Shang-Ta Yang
National Tsing Hua University
Fu-En Wang
National Tsing Hua University
Chi-Han Peng
Peter Wonka
Min Sun
National Tsing Hua University
Hung-Kuo Chu
National Tsing Hua University
We present a deep learning framework, called DuLa-Net, to predict Manhattan-world 3D room layouts from a single RGB panorama. To achieve better prediction accuracy, our method leverages two projections of the panorama at once, namely the equirectangular panorama-view and the perspective ceiling-view, that each contains different clues about the room layouts. Our network architecture consists of two encoder-decoder branches for analyzing each of the two views. In addition, a novel feature fusion structure is proposed to connect the two branches, which are then jointly trained to predict the 2D floor plans and layout heights. To learn more complex room layouts, we introduce the Realtor360 dataset that contains panoramas of Manhattan-world room layouts with different numbers of corners. Experimental results show that our work outperforms recent state-of-the-art in prediction accuracy and performance, especially in the rooms with non-cuboid layouts.
Framework overview. Given the input as an equirectangular panoramic image, we follow the same pre-processing step used in PanoContext to align the panoramic image with a global coordinate system, i.e. we make a Manhattan world assumption. Then, we transform the panoramic image into a perspective ceiling-view image through an equirectangular to perspective (E2P) conversion. The panorama-view and ceiling-view images are then fed to a network consisting of two encoder-decoder branches. These two branches are connected via an E2P-based feature fusion scheme and jointly trained to predict a floor plan probability map, a floor-ceiling probability map, and the layout height. Two intermediate probability maps are derived from the floor-ceiling probability map using E2P conversion and combined with floor plan probability map to obtain a fused floor plan probability map. The final 3D Manhattan layout is determined by extruding a 2D Manhattan floor plan estimated on the fused floor plan probability map using the predicted layout height.
Visual results. Given a single RGB panorama, our method automatically estimates the corresponding 3D room layout. Our method is flexible to handle more complex room layout beyond the simple cuboid room. The checkerboard patterns on the walls indicate the missing textures due to occlusion.
The project was funded in part by the KAUST Office of Sponsored Research (OSR) under Award No. URF/1/3426-01-01, and the Ministry of Science and Technology of Taiwan (_PHONE_-E-007-047- and _PHONE_-E-007-088-MY3).
author = {Yang, Shang-Ta and Wang, Fu-En and Peng, Chi-Han and Wonka, Peter and Sun, Min and Chu, Hung-Kuo},
title = {DuLa-Net: {A} Dual-Projection Network for Estimating Room Layouts From a Single {RGB} Panorama},
booktitle = {{IEEE} Conference on Computer Vision and Pattern Recognition, {CVPR} 2019},
pages = {3363--3372},
year = {2019}


text:
A turning tarpit is a form of Turing tarpit in which there is a sequence of commands, modeled as a rotating wheel. In a turning tarpit, language commands do not directly manipulate data, but instead affect the command wheel(s), by changing their rotation or executing the current command.
Overview of the Genre
The earliest example of a turning tarpit in the world of esoteric programming languages is probably reMorse (1998). Whirl (2004) embraces the technique most explicitly, styling itself as "dizzy programming". Fortuna (2005 or earlier) is probably the first turning tarpit to use the image of a wheel. Wunnel (2011) applies the turning tarpit technique to the problem of designing a 1L, and expands on the idea by using a two-dimensional torus of instructions instead of a one-dimensional wheel. Braincrash (2011) is a brainfuck equivalent. Jolverine (2012) is a conscious attempt to expand the turning tarpit genre by introducing a new feature: modifying the order of instructions on the wheel during execution.

source: openbmb/Ultra-FineWeb


Looking for fun group projects guaranteed to fire up ageing brain cells? Maybe with a few fund raising ideas? Or win-win-win community projects?
Specifically targetted to people aged 65-105, this downloadable PDF includes six separate group activity plans for environments where isolation, mild cognitive impairment, or depression are considerations. Combining proven methods, latest research and professional experience, this group of activities are designed to increase well-being, stimulate neuro-cognitive pathways, foster inclusion, get the community involved, and just have fun!
Each inclusion has been specifically vetted for maximum enjoyment and effectiveness.
Instructions include equipment and staffing requirements, project objectives, sourcing suggestions, supplemental ideas (including fund raising) and references on how and why reminiscence therapy works so well!
Applied Reminiscence Therapy--A Facilitator's Guide
 - Facilitators working with seniors' care centres, historical or pioneer societies, museums and other special interest groups looking for specific ideas and strategies for fun, enriching group activities!


Of Sailing Ships, Velociraptors, and Walking on the Moon
Subtitle: Catamaran Parameters in SMath Studio
How are boats, velociraptors, and walking on the Moon related? We'll find out by designing a catamaran and making a mistake.
In 18 hundred and 59, the engineer Brunel,
Would build the greatest ship afloat,
and rule the ocean's swell.
Nineteen thousand tons of steel
they used to shape the mighty keel,
Forged inside the smelter
where they made the gates of Hell…
And the name upon the contract, Isambard Brunel.
—Ballad of the Great Eastern, by Sting
The Great Eastern
Isambard Kingdom Brunel an English civil engineer described as "one of the most ingenious and prolific figures in engineering history" designed the SS Great Eastern which was launched in 1858. The Great Eastern was by far the largest ship built to date at 211 m in length and a displacement of 32,160 tons. Four steam engines with a combined power of 6 MW powered the Great Eastern.
Great Eastern 1866
The Great Eastern
Brunel wanted a ship that could circumnavigate the globe without refueling and figured that it could carry a larger cargo with a smaller crew. But in the end, the Great Eastern couldn't maintain a speed much more than about 14 knots (1 knot = 1 nautical mile/hour = 1.15 mph) and wasn't the financial success Brunel hoped.
Engineers at the time didn't fully understand friction forces. Now, we can better predict the action of waves on a boat and the drag forces associated with the motion of a boat through the water. We'll use these equations to design a yacht, but in the process, we'll make a mistake that leads us back to The Great Eastern.
Design Parameters
In this post, I'll show you how to use the open-source program SMath Studio to write the equations required for designing a catamaran. The calculations below are from the Catamaransite which were derived from a design by Naval Architect Terho Halme.
Designing a sailing catamaran starts by selecting a few parameters to set the overall dimensions. Once you have the basic dimensions figured out you will know how much power it takes to drive the boat at different speeds, and this helps determine the size of the sails and the power requirements of the engine.
A consistent set of units helps the designer keep track of the parameters. If the calculations show your expected boat speed in meters\sqrt{\text{meters}} then obviously there's a problem somewhere with the units. We'll be using the metric system for units where lengths will be in meters and masses in kilograms.
The length overall LHL_H (often abbreviated as LOA) is the maximum length dimension. The waterline length LWLL_{WL} is the maximum length touching the water if the water is still. In this example, they are nearly the same, LH=12.2 mL_H = 12.2 \; m and LWL=12.0 mL_{WL} = 12.0 \; m. The canoe body draft (often just called draft), TCT_C, which is the maximum depth below the waterline, will be derived later.
Side view
In SMath Studio you can enter values for total length and waterline length like this:
SMath Studio length parameters
SMath Studio lets you start equations anywhere on the page, although an equation calling on a previous equation needs to be below the first equation. To enter LHL_H type "L" followed by a period "." which starts a subscript, then "H". Type ":" to assign a value to your variable, and SMath Studio will fill in the equal sign after the colon. Now enter the variable value of 12.212.2 followed by "m" for meters. A units menu box will open showing available units beginning with the letter "m":
Smath Studio length unit entry
Press the TAB key to accept the choice of meters. Units are shown in blue on the worksheet. If you see a black "m" where you think a meter unit should be, go back and re-enter the unit.
Typing text somewhere on the page generates a comment. Click on the palette icon on the toolbar and you can change the background color of the comment.
SMath Studio text color
That's almost everything you need to know about SMath Studio for this project.
Getting back to the design, everything else you need to input is dimensionless (that is, unitless) coefficients and ratios. The first one is the length-to-beam ratio which is the ratio of the waterline length to the maximum width of one hull at the waterline BWLB_{WL},
LBR=LWLBWL.L_{BR}=\frac{L_{WL}}{B_{WL}}.
Select LBRL_{BR} somewhere between 9 and 12 for a cruising catamaran. Lower values will make the hulls narrower, and decrease draft if all other parameters remain the same. For this example, set LBR=11.0L_{BR} = 11.0. In this figure, the inner curve is the waterline which is where the hull touches the surface of the water. The outer curve is the outline of the hull.
Single hull top view
Reducing the width of the hull would result in a deeper draft, but doesn't here is because of the next ratio, the beam to draft ratio, BTRB_{TR}, which is used to determine the canoe body draft
TC=BWLBTR.T_C = \frac{B_{WL}}{B_{TR}}.
The beam to draft ratio is generally between 1.5 and 2.8. Setting BTR2B_{TR} \approx 2 minimizes friction resistance while wave resistance is minimized for values slightly below 2. We'll set BTR=1.9B_{TR} = 1.9 for now. Frictional resistance is proportional to the surface area of the hull in the water.
The boat's motion generates a wave at the bow. Wave resistance increases approximately as the cube of boat speed.
The midship coefficient, CmC_m is a measure of the shape of the cross-section defined as the ratio of the cross-section area, AmA_m divided by the bounding rectangle formed by the waterline beam, BWLB_{WL}, and the draft, TCT_C,
Cm=AmBWLTC.C_m = \frac{A_m}{B_{WL}T_C}.
Section view
Since the area of a triangle is 12wh\frac{1}{2} wh, a vee-shaped hull will have a minimum at Cm=0.5C_m = 0.5, while elliptical cross-section results in Cm=0.785C_m = 0.785, and a more rectangular cross-section might have Cm=0.9C_m = 0.9. Large cargo ships have rectangular sections, but for sailboats, elliptical cross-sections are more typical.
James Wharram designs catamarans meant to be cut from sheets of marine plywood with no rounded cross-sections, such as the Ariki shown here. Construction is simpler, but the midship coefficient is quite low.
Ariki
Wharram Ariki
The area of any ellipse divided by the area of the enclosed bounding box may be calculated as follows. The parametric equation for an ellipse is (acost,bsint)(a \cos t, b \sin t) with t[0,2π]t \in [0,2\pi],
ellipse
so the area of a quarter ellipse is
A=0ay dx=π20bsint(asint) dt=0π/2absin2t dt=ab2(tsin(2t)2)0π/2=abπ4.\begin{aligned} A &= \int_0^a y \; dx\\ &= \int_{\frac{\pi}{2}}^0 b \sin t (-a \sin t) \; dt \\ &= \int_0^{\pi/2} ab \sin^2 t \; dt \\ &= \left. \frac{ab}{2} \left( t - \frac{\sin(2t)}{2} \right) \right|_0^{\pi/2} = ab \frac{\pi}{4}. \end{aligned}
Dividing by the area of the circumscribing rectangle A=abA = ab gives the ratio π40.785\frac{\pi}{4} \approx 0.785 which holds for any ellipse. Stronger hulls with less wetted surface area arise from elliptical cross-sections, so we'll assume for this design the hulls are elliptical, and set Cm=0.785C_m = 0.785.
A boat's displacement is the volume of water with a mass equal to the mass of the boat. The prismatic coefficient is defined as
Cp=DAmLWLC_p = \frac{D}{A_m


text:
The UISlider control offers a way to continuously get values from the user within a range of set values. In the Interface Builder library of controls, there is only a horizontal version of the slider, with no obvious way to change its orientation. In this blog, we'll learn how to rotate the slider control to a vertical orientation. So let's get started!
Start Xcode, choose "Create a new Xcode project," and select the Single View Application template. Click Next, name the project VerticalSlider, and choose options as shown:
Click Next, choose a location to save the project, and click Create.
Open ViewController.xib, and place a slider control on the view. Adjust the Minimum, Maximum, and Current values to 0, 360, and 0 as shown below. Also drag a UILabel control to the view, stretch it out and center it, and set the text to 44 points. Change the text in the label to "0", and center the text in the label.
Now open ViewController.h and make changes as shown here:
_USER_ ViewController : UIViewController
_USER_ (nonatomic, strong) IBOutlet UISlider *slider;
_USER_ (nonatomic, strong) IBOutlet UILabel *display;
- (IBAction)sliderValueChanged:(UISlider *)sender;
We've added outlet properties for both the slider and the label. Normally, we would not add an outlet for the slider, but in this application we want to change some properties of the slider object (make it vertical): we need an outlet to do that.
We've also added a method to detect a change in the value of the slider control. Reopen ViewController.xib, and wire up these properties and methods as shown here:
Make sure that the Value Changed event is selected in the slider.
Now open ViewController.m and make these changes to the file:
_USER_ ViewController ()
float r = d * (M_PI / 180);
- (IBAction)sliderValueChanged:(UISlider *)sender
self.display.text = [NSString stringWithFormat:@"%d", (int)sender.value];
CGAffineTransform labelRotation = CGAffineTransformIdentity;
labelRotation = CGAffineTransformRotate(labelRotation, [self degrees2radians:sender.value]);
self.display.transform = labelRotation;
// Do any additional setup after loading the view, typically from a nib.
CGAffineTransform sliderRotation = CGAffineTransformIdentity;
sliderRotation = CGAffineTransformRotate(sliderRotation, -(M_PI / 2));
self.slider.transform = sliderRotation;
// Release any retained subviews of the main view.
return (interfaceOrientation!= UIInterfaceOrientationPortraitUpsideDown);
After synthesizing the properties, we define a helper method, degrees2radians:, that converts a floating point number of degrees to radian measure. As humans, we tend to think of angles in degrees, but radian measure is used exclusively in most (if not all) graphics libraries. The conversion is simple: 360 degrees == 2π radians, so 1 radian == 2π / 360 degrees. Factoring out the 2 gives us π / 180. We can therefore convert degrees to radians by multiplying the number of degrees with π / 180.
Look next at viewDidLoad: (we'll come back to sliderValueChanged: in a moment). After calling through to super, we apply an affine transform to the slider's underlying view. This is possible because a UISlider (like all controls) is a descendent of UIView: UISlider ← UIControl ← UIView. As we already know, views can be transformed in a number of ways: they can be moved, scaled, and rotated.
First, we get a transform matrix by setting a local variable to the identity matrix. We then alter this matrix by applying a rotation transform (CGAffineTransformRotate) to it through -(π / 2) radians (-90 degrees). This value is then assigned to the transform property of the slider, which rotates the slider by 90 degrees in the counterclockwise direction. Higher values on the slider will therefore be "up."
The default center of rotation for a UIView object is the center of the view, calculated as the width of the view / 2 and the height of the view / 2. This transform therefore performs rotation about the center of the control. (If we want to rotate about another point, we must set the rotation point on the view's layer.)
In sliderValueChanged:, we set the text of the label to the value of the slider as an NSString, formatted with the slider's value cast to the integer type. We then apply a rotational transform to the label, converting the slider's value (degrees) into radian measure.
Run the application, and note that both the text and angle of the label change as the slider thumb is moved up and down:
(Of course, the slider itself is oriented vertically, which is the whole point of the blog!)
There is nothing that says the orientation of any control can't be at an arbitrary angle, for example, we could have oriented the slider at 45 degrees:
But such orientations are confusing to the user: changing in two directions at once (both horizontally and vertically) implies a change in two independent variables. Unless there is a very good reason to do this, keep the slider in either the default horizontal orientation, or the


HOW TO DELETE TEMPORARY FILES
As technology advances, our dependency on computers and digital devices also increases. It's now common for us to download and save files on our devices to access them later. But, did you know that every time we access a file on our device, a temporary file is created? Over time, temporary files pile up and can significantly reduce system performance. So, how can you delete temporary files and improve your device's performance? Here's your guide:
1. Use the Disk Cleanup Tool: The Disk Cleanup tool is an inbuilt feature in Windows Operating System that helps remove unwanted files, including temporary files. To use this tool, search for 'Disk Cleanup' in the Start menu, and select the drive you want to clean. The tool will scan and provide a list of files that can be deleted. Simply select 'Temporary files' and click on 'OK' to delete them.
2. Use CCleaner: CCleaner is another tool that can help remove temporary files from your device. It's available for free and has both a paid and a free version. Simply download and install CCleaner, and select 'Temporary files' under the 'Cleaner' tab. Click on 'Run Cleaner,' and the tool will remove all your temporary files.
3. Use Storage Sense: Storage Sense is a tool available in Windows that helps you manage storage on your device. It automatically removes temporary files when your storage is running low. To turn on Storage Sense, go to 'Settings' > 'System,' > 'Storage' > 'Storage Sense,' and turn it 'ON.'
4. Manually delete temporary files: You can also manually delete temporary files by using Run command. Press 'Windows key + R,' type '%temp%' in the Run dialogue box, and press enter. This will open the 'Temp' folder, and you can select and delete files you don't need.
In conclusion, temporary files can significantly reduce system performance, but deleting them regularly can improve your device's performance. Use the Disk Cleanup tool, CCleaner, or Storage Sense to remove temporary files automatically, or manually delete them using the Run command. By doing so, you can free up space on your device, reduce clutter, and keep it running smoothly.


Building a Two-Factor Authentication Form in React Using SMS Verification
Aron Schüler Published
Intro
In today's web projects, securing user accounts is more important than ever. Simple passwords are using their value through dataleaks, and most users still reuse passwords. Two-Factor Authentication (2FA) adds an extra layer of security by requiring users to verify their identity through a second form of authentication, typically a code sent via SMS. This guide will walk you through building a 2FA form in React using react-hook-form. Let's get started!
Step-by-Step Guide
Step 1: Setting Up Your React Project (Vite)
 - First, we will set up a new React project to implement the form. We will use Vite. You can do this with the npx create-vite command and the react-ts template:
 npx create-vite 2fa-sms-react --template react-ts
 cd 2fa-sms-react
 - Once your project is set up, open it in your code editor.
Step 2: Installing Required Dependencies
Managing form state and validation with React's useState and useEffect hooks can be cumbersome. Instead, we'll use react-hook-form to simplify form handling and validation.
 - Install react-hook-form to manage your form state:
 npm install react-hook-form
Step 3: Creating the 2FA Form Component
Next, we will setup a component that holds our two 2FA forms. We need one form to input the phone number that will receive the SMS code and another form to input the verification code. We will handle the form submission logic in this component with react-hook-form and utilize one of my favorite features: the autoComplete="one-time-code" attribute.
 - Create a new component named TwoFactorAuthForm.js in the src directory.
 - In this component, we'll create a form with an input for the phone number and another form + input for the verification code using react-hook-form.
 - The autoComplete="one-time-code" attribute on the verification code input tells the browser to autofill the code if it detects a one-time code SMS. Very handy if you're using a mobile device, I appreciate this feature a lot.
 import React from "react";
 import { useForm } from "react-hook-form";

 const TwoFactorAuthForm = () => {
 const { register, handleSubmit, reset } = useForm();

 const onSendCode = (data) => {
 // Logic to send the SMS verification code
 console.log('Sending verification code to ${data.phoneNumber}');
 // reset the form after sending the code
 reset({ phoneNumber: data.phoneNumber });
 };

 const onVerifyCode = (data) => {
 // Logic to verify the SMS verification code
 console.log('Verifying code: ${data.verificationCode}');
 };

 return (

Two-Factor Authentication

 <form onSubmit={handleSubmit(onSendCode)}>

 Phone Number:
 <input
 type="tel"
 {...register("phoneNumber", { required: true })}
 required
 />
 <button type="submit">Send Code</button>

 </form>
 <form onSubmit={handleSubmit(onVerifyCode)}>

 Verification Code:
 <input
 type="text"
 {...register("verificationCode", { required: true })}
 autoComplete="one-time-code"
 required
 />
 <button type="submit">Verify Code</button>

 </form>

 );
 };

 export default TwoFactorAuthForm;
Step 4: Integrating SMS API for Sending Codes
To send SMS codes, you need a service like Twilio and an API endpoint on your backend to handle the SMS sending logic. For this guide, we will focus on the frontend, but the backend integration should look like this:
 - Create an API endpoint on your backend to send the SMS verification code.
 - Store the verification code on the backend (e.g., in a database or in-memory store) and check the code entered by the user against the stored code.
 - Update onVerifyCode to send the verification code to the backend for verification.
Conclusion
Building a 2FA form in React using SMS verification significantly enhances your application's security. Utilizing react-hook-form simplifies form handling and state management, and the autoComplete="one-time-code" attribute streamlines the user experience by allowing the browser to auto-fill the verification code. By following this guide, you've created a more secure and user-friendly authentication process. Feel free to ask questions or share your experiences in the comments below. Happy coding!
Related Posts
Find posts on similar topics:
Support me via buymeacoffee
If I helped you solve a problem or you just like my content, consider supporting me by buying me a coffee.
Buy me a coffee
Comments


text:
The Rogue River
The Rogue River is located in southwestern Oregon and flows 215 miles from Crater Lake to the Pacific Ocean. The 84 mile, Congressionally designated "National Wild and Scenic" portion of the Rogue begins 7 miles west of Grants Pass and ends 11 miles east of Gold Beach.
The Rogue was one of the original eight rivers included in the Wild and Scenic Rivers Act of 1968. The Rogue National Wild and Scenic River is surrounded by forested mountains and rugged boulder and rock-lined banks. Check out the Rogue River Float Guide (PDF) for more information on the Wild and Scenic Rogue River.
Steelhead and salmon fishery, challenging whitewater, and extraordinary wildlife viewing opportunities have made the Rogue a national treasure. Black bear, river otter, black-tail deer, bald eagles, osprey, Chinook salmon, great blue heron, water ouzel, and Canada geese are common wildlife seen along the Rogue River. Popular activities include: whitewater rafting, fishing, jet boat tours, scenic driving, hiking, picnicking, and sunbathing.
National Landscape Conservation System
The Rogue National Wild and Scenic River is part of the Bureau of Land Management's National Landscape Conservation (NLCS). This system includes nearly 27 million acres of National Monuments, National Conservation Areas, Wild and Scenic Rivers, and National Scenic and Historic Trails. The NLCS works to conserve the essential fabric of the West, while offering exceptional opportunities for recreation, solitude, wildlife viewing, exploring history, and scientific research.
Oregon Stream Flow
The US Geological Survey hosts real-time water data readings for the state of Oregon. Types of data available include current water height, stream flow, median flow, etc. View the US Geological Survey National Water Information System for the state of Oregon.
Smullin Visitor Center
The visitor center is on the river near the town of Galice and is approximately 20 miles from I-5 on the Merlin-Galice Road. The center is called the Smullin Visitor Center and is located at the Rand National Historic Site (PDF).
14335 Galice Road
Merlin, Oregon 97532
Hours of Operation
- May 5th through October 15th
7:00 am to 3:00 pm - seven days a week
- Phone Access Hours - 8:00 am to 3:00 pm
For directions, click here.

source: HuggingFaceFW/fineweb-edu


text:
- While we are experts on rotary kilns, we recognize that these devices may not be your only option. We help our clients identify and select, the thermal systems that best match their process or site conditions based on their process data and our vast process experience. If you need help developing your process data into a new design or establishing conditions for scale up AlphaThermal can assist you in meeting your process dreams with the help of our partners. We partner with R&D facilities to do material testing to inform client opportunities.
- With the right lab data (TRL = 2-3) or pilot plant data (TRL = 3-5), we can provide process design calculations leading to the sizing of demonstration/commercial scale (TRL = 5-8) furnace of choice and related appurtenances upstream and downstream of the main furnace. (TRL is US-DOE defined Technology Readiness Level).
We provide design layout using the latest design tools available such as AutoCAD, Inventor, etc., and complete the design with flowsheets, engineering drawing as blueprints for fabrication and P&ID to match.
- We offer our own industrial supervisory controls and data acquisition systems programming, control systems integration using a combination of PLCs and control software packages such as but not limited to Allen Bradley/Rockwell Automation and Automation Direct, and embedded microcontrollers such as Atmel AVR for data acquisition and supervisory control of the process and related emissions.
- Alternatively, we can oversee, manage, and/or provide advice and due diligence on your vendors that supply process equipment, unit operations, controls, instrumentation, and any other process-related work.
- We provide supervision of the fabrication of the select thermal system (our own design or vendor supplied), installation and commissioning of the installed system for your technology.

source: m-a-p/FineFineWeb


text:
Social context: group
Typical strategies: guided discovery
Outdoor learning extends the classroom into the great outdoors, where a wider range of activities can be undertaken, typically for team-building and leadership development. Most outdoor learning is experiential: participants are allocated to groups and are set tasks, perhaps crossing a lake or building a shelter; when the task has been completed they then review how they went about the task and make new generalisations about the process they should follow in future.
Outdoor learning is:
- at its best when voluntary, open in terms of outcomes, designed to suit all ages and fitness levels, facilitated by skilled trainers;
- best avoided when mandatory, contrived in terms of outcomes, overly demanding physically.


text:
SIEMENS 840D VIRTUAL NC KERNEL (VNCK) integration with VERICUT
The kinematics of VERICUT's virtual CNC machine simulation is driven by the same 840D control software that drives the actual CNC machine!
VERICUT CNC Machine Simulation software is integrated with the CNC motion logic of the Siemens SINUMERIK 840D control using Siemens' Virtual NC Kernel (VNCK).
The VERICUT/VNCK module provides complete coverage of the 840D programming language. This includes advanced features, unique motion control techniques and high-level programming options.
Once the VERICUT/VNCK module is enabled, running the simulation is simple. The user selects the 840D configuration file for the specific machine and the main NC program to process, then starts the VERICUT simulation.
NC axis motion time is calculated using the VNCK, utilizing the actual motion control logic of the CNC.


Return To Handbook IndexRoss Crain's Resume
Please be fair to the author. Pay your Shareware Fee HERE and receive a copy of CPH by download.
Search Crain's Petrophysical Handbook on FRACTURE IDENTIFICATION from IMAGE LOGS
 Fracture Identification from Image Logs Open Hole Logs Sonic Logs
Fracture Identification From IMAGE Logs
Resistivity imager logs, also called microscanner or FMS or FMI logs, carry an array of electrodes on pads used to produce an electrical image of the formations seen on the borehole wall. Acoustic image logs, also called televiewer or CBIL logs, use a rotating transducer to measure acoustic impedance images over the entire borehole wall, as well as an acoustic caliper. Microscanners have better vertical resolution and dynamic range than televiewers, but televiewers see the entire wellbore while microscanners usually see less than 100%.
On earlier microscanner tools, the image arrays were on only two of the four pads, so several logging passes of the tool had to be merged together for better borehole coverage. Using this technique, from forty to eighty percent wellbore coverage could be achieved. Newer tools now have four or eight active imaging pads, reducing the need for repeat passes to obtain 100% coverage of the borehole wall.
In addition to the array electrodes, the tool also has ten standard dipmeter electrodes (8 measure electrodes plus 2 speed buttons) as well as a directional cartridge containing accelerometers and magnetometers for orientation input to the standard dip computations.
The electrical images are made by applying a gray scale to the resistivity wiggle-traces produced from the electrodes on the tool. In this way, low resistivity zones appear dark and high resistivity, low porosity intervals appear white. Since the array on each pad is two and a half inches wide, irregular features, such as vugs and fractures, show up as dark spots and lines on the images. Colour tones may be used instead of grey.
 Formation micro-scanner shows fractures and bedding planes
The image depth scale is usually 1:20 or 1:40, and the X axis is scaled from -180 to +180 degrees around the borehole, putting North in the middle of the track. Examples are provide above. A dramatic near vertical fracture can be seen. Two vertical scales are used: one for reconnaissance and one for detail evaluation. Fracture orientation is roughly NNW - SSE dipping at more than 80 degrees. Other images on these two figures illustrate induced fractures, borehole breakout, inter-bedding laminations, slump brecchia, vugs with fractures, and stylolites.
Formation micro-scanner shows porosity features sometimes
Fractures or bedding planes can be identified by connecting the linear features to form a sinusoid on the image. The sinusoid can be analyzed to find the angle of dip:
 1: Angle of Dip = Arctan (Y / D)
 Y = peak to peak distance of the sinusoid (millimeters)
 D = hole diameter (millimeters)
Since Y is measured on a plot or CRT, it must be transformed into actual wellbore distance by multiplying the measured distance by the plot scale. Note also that near vertical fractures will appear near vertical on the plot and do not form sinusoids. Fracture orientation is determined by the azimuth of the sinusoid troughs, read from the direction scale at the top of the image.
Fractures should produce a higher contrast anomaly than other porosity features because the fractures are flushed with conductive borehole fluid and there is exaggeration of the anomaly due to breakout of the wellbore on the fracture. The fractures are sometimes masked, however, by extremely conductive vugs, so both the gray scale images and the electrical wiggle-trace data are analyzed to identify fractures. Resolution of the micro-scanner is about 10 mm, but contrast between fractures and rock is so good that thinner events, as thin as a few microns, can often be seen.
Micro-scanner images give a very good visual correlation to core and allow the interpretation of small and large scale sedimentary features in the formations. The identification of fractures, along with fracture orientation, and the ability to differentiate them from high angle bedding features is possible.
 FMI log in fractured granite reservoir showing computed dip angle and direction
Further processing of the images to generate fracture frequency and fracture aperture is now routinely applied to the newest formation micro-imaging (FMI) logs. Older logs can be reprocessed for frequency and aperture only if data tapes still exist. The product of frequency and aperture is fracture porosity.
Fracture Identification From Acoustic Image Logs
The acoustic image log (borehole televiewer) is similar in appearance to a resistivity image log (formation micro-scanner),
but uses an ultrasonic derived, directionally oriented, 360 degree view of the borehole wall.
Such an image, created by a conventional televiewer, has sufficient resolution to see major fracture systems in good hole conditions. The hole must be round, smooth, and filled with light weight mud to get really good images. The tool must be well centered. These requirements are not met in most fractured zones, but logs are still run for fracture identification and they are useful in many cases. Trade names for these tools are not as well known as others: CBIL (pronounced Cybill) stands for Continuous Borehole Image Log and UBI for Ultrasonic Borehole Imager. Versions of these tools are also used for cement evaluation in cased holes.
The televiewer log of the wellbore is a representation of the amount of acoustic energy received at the transducers, which is dependent upon rock impedance, wall roughness, wellbore fluid attenuation, and hole geometry. For example, a smooth surface reflects better than a rough surface, a hard one better than a soft one. A surface perpendicular to the transducers reflects better than one that is skewed. Therefore, any irregularities such as fractures, vugs and irregular porosity will reduce the amplitude of the reflected signal.
Acoustic Image log with travel time (detailed borehole radius) at left and amplitude (acoustic impedance) on the right. Fractures show up as black sinusoid shapes on both images.
Comparison of resistivity image log (left) and ultrasonic image log in the same borehole. The higher spatial resolution and the higher dynamic range of the resistivity image is clear. Black colour represents low acoustic impedance on CBIL/ UBI, or low resistivity on FMI, in this case representing fractures (near vertical) or shale beds (near horizontal).
Older acoustic televiewer log (left) and interpretation image (right)
The resolution of the tool allows us to determine events of about 10 mm in width. Fractures are often accentuated in the wellbore by the drilling process, which breaks out the fracture on both sides of the opening. If it were not for this breakout, most fractures would not be seen by the televiewer as their width is commonly less than 1 mm. An example of an actual image from an older televiewer log, and an interpretive sketch with artificially enhanced resolution. The formation microscanner is much more sensitive to fractures than the televiewer. The electrical conductivity of the fluid in the fracture is 1000 or more times higher than the surrounding rock, compared to about 4 times for acoustic televiewer signals.
In addition to the amplitude image, the travel time image is also recorded on modern logs. This is the travel time from tool to wellbore wall and back to the detector through the mud. This image is effectively an acoustic caliper log, and is used to locate breakouts.
Considerable research is being conducted to enhance the televiewer images, using both arrival time and amplitude of the sound waves, plus computer methods for image enhancement, especially edge enhancement to resolve fractures and bed boundaries. Modern televiewer logs can be used effectively in more rugged boreholes than older versions because of the new processing techniques. Be aware of the age of the log before you start your analysis.
Since the televiewer image is oriented to magnetic north, we can determine the dip direction of a fracture or bedding plane from the azimuth of the troughs of the sinusoid. The dip angle can be calculated from the same equation as given for the microscanner.
CAUTION: The direction scale on the top of the image varies between service companies. One uses a scale with North in the center of the image (same as for FMS and FMI), another puts South in the center.
Here is a televiewer and core photo of the same fracture. The sinusoidal shape of the fracture trace is very obvious. In this image, South is in the center of the track and the fracture is oriented N 70 E, with a thinner, steeper fracture at N 45 W.
<== Core photo (left) and televiewer image (right) of fractured interval
Fracture identification is easiest when several detection methods are combined. This is illustrated in Figures 28.31 and 28.32, where sonic variable intensity and televiewer images are used. If density of the rock is also measured, numerous elastic properties of the rock can be derived, which are useful in hydraulic fracture design and sanding studies.
Wavetrain and televiewer image with minor fracturing
The televiewer has a few advantages over the formation microscanner. These are the ability to see 360 degree image of the borehole, no need for pad contact, ease of use in oil base muds, high resolution acoustic caliper, and better steep bed definition due to shallow investigation. The microscanner has better resolution in rough hole and has higher dynamic range due


value($val)
is_maybe_value($val)
Tests if $val is a real value (defined, not a reference and not a glob.
is_string($val)
is_maybe_string($val)
Tests if $val is a non-empty string. Equivalent to is_value($val) && length($val) > 0.
is_number($val)
is_maybe_number($val)
Tests if $val is a number.
is_integer($val)
is_maybe_integer($val)
Tests if $val is an integer.
is_natural($val)
is_maybe_natural($val)
Tests if $val is a non-negative integer. Equivalent to is_integer($val) && $val >= 0.
is_positive($val)
is_maybe_positive($val)
Tests if $val is a positive integer. Equivalent to is_integer($val) && $val >= 1.
is_same($val, $other_val)
Tests if $val is deeply equal to $other_val.
is_different($val, $other_val)
The opposite of is_same().
Check functions
 use Catmandu::Util qw(:check);
 check_hash_ref({color => 'red'});
 # => {color => 'red'}
 check_hash_ref([]);
 # dies
A group of assert functions similar to the :is group, but instead of returning true or false they return their argument or die.
check_invocant($val)
check_maybe_invocant($val)
check_able($val, @method_names)
check_maybe_able($val, @method_names)
check_instance($val, @class_names)
check_maybe_instance($val, @class_names)
check_ref($val)
check_maybe_ref($val)
check_scalar_ref($val)
check_maybe_scalar_ref($val)
check_array_ref($val)
check_maybe_array_ref($val)
check_hash_ref($val)
check_maybe_hash_ref($val)
check_code_ref($val)
check_maybe_code_ref($val)
check_regex_ref($val)
check_maybe_regex_ref($val)
check_glob_ref($val)
check_maybe_glob_ref($val)
check_value($val)
check_maybe_value($val)
check_string($val)
check_maybe_string($val)
check_number($val)
check_maybe_number($val)
check_integer($val)
check_maybe_integer($val)
check_natural($val)
check_maybe_natural($val)
check_positive($val)
check_maybe_positive($val)
check_same($val, $other_val)
check_different($val, $other_val)
Human output functions
 use Catmandu::Util qw(:human);
human_number($num)
Insert a comma a 3-digit intervals to make $num more readable. Only works with integers for now.
 human_number(64354);
 # => "64,354"
human_byte_size($size)
 human_byte_size(64);
 # => "64 bytes"
 human_byte_size(_PHONE_);
 # => "10.01 MB"
human_content_type($content_type)
human_content_type($content_type, $default)
 human_content_type('application/x-dos_ms_excel');
 # => "Excel"
 human_content_type('application/zip');
 # => "ZIP archive"
 human_content_type('foo/x-unknown');
 # => "foo/x-unknown"
 human_content_type('foo/x-unknown', 'Unknown');
 # => "Unknown"
XML functions
 use Catmandu::Util qw(:xml);
xml_declaration()
Returns qq(<?xml version="1.0" encoding="UTF-8"?>\n).
xml_escape($str)
Returns an XML escaped copy of $str.
Miscellaneous functions
require_package($pkg)
require_package($pkg, $namespace)
Load package $pkg at runtime with require and return it's full name.
 my $pkg = require_package('File::Spec');
 my $dir = $pkg->tmpdir();
 require_package('Util', 'Catmandu');
 # => "Catmandu::Util"
 require_package('Catmandu::Util', 'Catmandu');
 # => "Catmandu::Util"
use_lib(@dirs)
Add directories to @INC at runtime.
SEE ALSO ^
Data::Util.
syntax highlighting:


19th arrondissement of Paris
From Wikipedia, the free encyclopedia
Jump to: navigation, search
19th arrondissement of Paris
French municipal arrondissement
La Villette in the 19th arrondissement
La Villette in the 19th arrondissement
Paris and its closest suburbs
Paris and its closest suburbs
Country France
Region Île-de-France
Department Paris
Commune Paris
 - Mayor François Dagnaud
 - Total 6.79 km2 (2.62 sq mi)
Population (8 March 1999 census)[p]
 - Total 172,730
 - Estimate (2005) 187,200
 - Density 25,000/km2 (66,000/sq mi)
The 19th arrondissement of Paris is one of the 20 arrondissements (administrative districts) of the capital city of France.
Situated on the Right Bank of the River Seine, it is crossed by two canals, the Canal Saint-Denis and the Canal de l'Ourcq, which meet near the Parc de la Villette.
The 19th arrondissement includes two public parks: the Parc des Buttes Chaumont, located on a hill, and the Parc de la Villette, which is home to both the Cité des Sciences et de l'Industrie, a museum and exhibition centre, and the Conservatoire de Paris, one of the most renowned music schools in Europe and part of the Cité de la Musique.
The land area of the arrondissement is 6.786 km2 (2.62 sq. miles).
The population of the 19th arrondissement is still increasing. At the last census, in 1999, the population was 172,730 inhabitants. As of the same census, 68,101 people worked in the arrondissement.
Historical population
(of French censuses)
Population Density
(inh. per km2)
1872 93,174 13,730
1954 155,058 22,845
1962 159,568 23,514
1968 148,862 21,937
1975 144,357 21,273
1982 162,649 23,968
1990 165,062 24,324
1999 172,730 25,454
2009 (peak of population) 184,787 27,215
Places of interest[edit]
External links[edit]
Coordinates: 48°52′56.46″N 2°22′54.56″E / 48._PHONE_°N 2._PHONE_°E / 48._PHONE_; 2._PHONE_


TY - JOUR AB - Purpose– The purpose of this paper is to provide a systematic method to perform analysis and test for vibration‐thermal strain behavior of plastic ball grid array (PBGA) assembly by considering thermal and vibration loading mode. Also to investigate the dynamic behavior of PBGA assembly by considering loading modes for design and reliability evaluation of PBGA packaging.Design/methodology/approach– A PBGA assembly prototype with different structure and material parameters is designed and manufactured. Based on investigation of the structural and physical parameters of PBGA sample, the vibration‐thermal strain test is developed to measure the strain distribution at the surface of the BT (bismaleimide triazine) substrates and PCB (printed circuit board) surface under vibration‐thermal cycling loading such as random vibration and the temperature is changed from 0°C to 100°C.Findings– The test results show that the loading modes have different impact on PCB, EMC and substrate, respectively. In the meantime, it is shown that the characteristics of the compound mode is not the linear accumulative result by single vibration mode and single thermal loading mode as forecasted. The nonlinear mechanism for these modes application is the future work for progress.Research limitations/implications– It is very difficult to set up a numerical approach to illustrate the validity of the testing approach because the complex loading modes and the complex structure of PBGA assembly. The research on an accurate mathematical model of the PBGA assembly prototype is a future work.Practical implications– It implies a potential design characteristic for future application of PBGA assembly. It also builds a basis for future work for design and reliability evaluation of BGA _URL_ This paper fulfils useful information about the thermal‐vibration coupling dynamic behavior of PBGA assembly with different structure characteristics, materials parameters. VL - 29 IS - 2 SN - _PHONE_ DO - 10.1108/13565361211237653 UR - _URL_ A1 - Tan Guangbin A2 - Yang Ping A3 - Li Tianbo A4 - Xi Tao A4 - Yuan Xiaoming A4 - Yang Jianming PY - 2012 Y1 - 2012/01/01 TI - Comparison approach on strain behavior of PBGA assembly by considering different thermal‐mechanical compound loading modes T2 - Microelectronics International PB - Emerald Group Publishing Limited SP - 71 EP - 75 Y2 - 2020/01/27 ER -


Open Access
Power series method and approximate linear differential equations of second order
Advances in Difference Equations20132013:76
_URL_
Received: 14 December 2012
Accepted: 4 March 2013
Published: 26 March 2013
Abstract
In this paper, we will establish a theory for the power series method that can be applied to various types of linear differential equations of second order to prove the Hyers-Ulam stability.
MSC:34A05, 39B82, 26D10, 34A40.
Keywords
power series methodapproximate linear differential equationsimple harmonic oscillator equationHyers-Ulam stabilityapproximation
1 Introduction
Let X be a normed space over a scalar field K , and let I R be an open interval, where K denotes either or . Assume that a 0 , a 1 , , a n : I K and g : I X are given continuous functions. If for every n times continuously differentiable function y : I X satisfying the inequality
a n ( x ) y ( n ) ( x ) + a n 1 ( x ) y ( n 1 ) ( x ) + + a 1 ( x ) y ( x ) + a 0 ( x ) y ( x ) + g ( x ) ε
for all x I and for a given ε > 0 , there exists an n times continuously differentiable solution y 0 : I X of the differential equation
a n ( x ) y ( n ) ( x ) + a n 1 ( x ) y ( n 1 ) ( x ) + + a 1 ( x ) y ( x ) + a 0 ( x ) y ( x ) + g ( x ) = 0
such that y ( x ) y 0 ( x ) K ( ε ) for any x I , where K ( ε ) is an expression of ε with lim ε 0 K ( ε ) = 0 , then we say that the above differential equation has the Hyers-Ulam stability. For more detailed definitions of the Hyers-Ulam stability, we refer the reader to [18].
Obłoza seems to be the first author who has investigated the Hyers-Ulam stability of linear differential equations (see [9, 10]). Thereafter, Alsina and Ger [11] proved the Hyers-Ulam stability of the differential equation y ( x ) = y ( x ) . It was further proved by Takahasi et al. that the Hyers-Ulam stability holds for the Banach space valued differential equation y ( x ) = λ y ( x ) (see [12] and also [1315]).
Moreover, Miura et al. [16] investigated the Hyers-Ulam stability of an n th-order linear differential equation. The first author also proved the Hyers-Ulam stability of various linear differential equations of first order (ref. [1725]).
Recently, the first author applied the power series method to studying the Hyers-Ulam stability of several types of linear differential equations of second order (see [2634]). However, it was inconvenient that he had to alter and apply the power series method with respect to each differential equation in order to study the Hyers-Ulam stability. Thus, it is inevitable to develop a power series method that can be comprehensively applied to different types of differential equations.
In Sections 2 and 3 of this paper, we establish a theory for the power series method that can be applied to various types of linear differential equations of second order to prove the Hyers-Ulam stability.
Throughout this paper, we assume that the linear differential equation of second order of the form
p ( x ) y ( x ) + q ( x ) y ( x ) + r ( x ) y ( x ) = 0 ,
(1)
for which x = 0 is an ordinary point, has the general solution y h : ( ρ 0 , ρ 0 ) C , where ρ 0 is a constant with 0 < ρ 0 and the coefficients p , q , r : ( ρ 0 , ρ 0 ) C are analytic at 0 and have power series expansions
p ( x ) = m = 0 p m x m , q ( x ) = m = 0 q m x m and r ( x ) = m = 0 r m x m
for all x ( ρ 0 , ρ 0 ) . Since x = 0 is an ordinary point of (1), we remark that p 0 0 .
2 Inhomogeneous differential equation
In the following theorem, we solve the linear inhomogeneous differential equation of second order of the form
p ( x ) y ( x ) + q ( x ) y ( x ) + r ( x ) y ( x ) = m = 0 a m x m
(2)
under the assumption that x = 0 is an ordinary point of the associated homogeneous linear differential equation (1).
Theorem 2.1 Assume that the radius of convergence of power series m = 0 a m x m is ρ 1 > 0 and that there exists a sequence { c m } satisfying the recurrence relation
k = 0 m [ ( k + 2 ) ( k + 1 ) c k + 2 p m k + ( k + 1 ) c k + 1 q m k + c k r m k ] = a m
(3)
for any m N 0 . Let ρ 2 be the radius of convergence of power series m = 0 c m x m and let ρ 3 = min { ρ 0 , ρ 1 , ρ 2 } , where ( ρ 0 , ρ 0 ) is the domain of the general solution to (1). Then every solution y : ( ρ 3 , ρ 3 ) C of the linear inhomogeneous differential equation (2) can be expressed by
y ( x ) = y h ( x ) + m = 0 c m x m
for all x ( ρ 3 , ρ 3 ) , where y h ( x ) is a solution of the linear homogeneous differential equation (1).
Proof Since x = 0 is an ordinary point, we can substitute m = 0 c m x m for y ( x ) in (2) and use the formal multiplication of power series and consider (3) to get
p ( x ) y ( x ) + q ( x ) y ( x ) + r ( x ) y ( x ) = m = 0 k = 0 m p m k ( k + 2 ) ( k + 1 ) c k + 2 x m + m = 0 k = 0 m q m k ( k + 1 ) c k + 1 x m + m = 0 k = 0 m r m k c k x m = m = 0 k = 0 m [ ( k + 2 ) ( k + 1 ) c k + 2 p m k + ( k + 1 ) c k + 1 q m k + c k r m k ] x m = m = 0 a m x m
for all x ( ρ 3 , ρ 3 ) . That is, m = 0 c m x m is a particular solution of the linear inhomogeneous differential equation (2), and hence every solution y : ( ρ 3 , ρ 3 ) C of (2) can be expressed by
y ( x ) = y h ( x ) + m = 0 c m x m ,
where y h ( x ) is a solution of the linear homogeneous differential equation (1). □
For the most common case in applications, the coefficient functions p ( x ) , q ( x ) , and r ( x ) of the linear differential equation (1) are simple polynomials. In such a case, we have the following corollary.
Corollary 2.2 Let p ( x ) , q ( x ) , and r ( x ) be polynomials of degree at most d 0 . In particular, let d 0 be the degree of p ( x ) . Assume that the radius of convergence of power series m = 0 a m x m is ρ 1 > 0 and that there exists a sequence { c m } satisfying the recurrence formula
k = m 0 m [ ( k + 2 ) ( k + 1 ) c k + 2 p m k + ( k + 1 ) c k + 1 q m k + c k r m k ] = a m
(4)
for any m N 0 , where m 0 = max { 0 , m d } . If the sequence { c m } satisfies the following conditions:
 1. (i)
 lim m c m 1 / m c m = 0 ,

 2. (ii)
 there exists a complex number L such that lim m c m / c m 1 = L and p d 0 + L p d 0 1 + + L d 0 1 p 1 + L d 0 p 0 0 ,

then every solution y : ( ρ 3 , ρ 3 ) C of the linear inhomogeneous differential equation (2) can be expressed by
y ( x ) = y h ( x ) + m = 0 c m x m
for all x ( ρ 3 , ρ 3 ) , where ρ 3 = min { ρ 0 , ρ 1 } and y h ( x ) is a solution of the linear homogeneous differential equation (1).
Proof Let m be any sufficiently large integer. Since p d + 1 = p d + 2 = = 0 , q d + 1 = q d + 2 = = 0 and r d + 1 = r d + 2 = = 0 , if we substitute m d + k for k in (4), then we have
a m = k = 0 d [ ( m d + k + 2 ) ( m d + k + 1 ) c m d + k + 2 p d k + (


Open Nav
Home Demos > Life Science
From your feet to your brain and all points in between, your heart has a tough job circulating blood all through your body. It's easy to imagine how blood flows to your feet. It goes down hill. Gravity pulls everything down, including your blood. The only way blood gets up from your feet or out to your hands is from the pumping of your heart. And it works hard. Just try lifting a bucket of water sometime. It's heavy, and so is your blood. Your heart has to pump your blood all day, every day.
See how hard your HEART has to work!
What You Need
 1. your hands
What You Do
 1. Hold one hand straight up over your head, and let the other one hang down at your side.
 2. Slowly count to sixty.
 3. Now hold your hands side by side and look them over.
What's Happening?
See how the hand that was up in the air is much paler than the one that was hanging down? That's because gravity made it harder for your heart to pump blood to the hand over your head, but it helped your heart to pump blood to the hand that was hanging down. The more blood, the darker your hand. Blood flowing can get science going!
Bill Nye


text:
The boxart of the most recent Arma Hobby F-6C reconnaissance Mustang model kit shows a beautiful aeroplane in natural metal finish and markings of the French GR II/33 "Savoie" ("Savoy"), flying in the clouds. What is GR II/33 "Savoie"? Pierre Vizentini wrote for us a short text about this extraordinary unit!
In July 1932, the Observation Group (GO) II/33 was created within the 33rd Observation Wing (French: "Escadre"). This group then had two squadrons (French: "escadron"): squadron No. 3 (the "Axe", ex-SAL 33, future BELFORT) and squadron No. 4 (the "Mouette du Rhin" – "Seagull of Rhine", future SAVOIE). Stationed in Nancy from 1932 to 1939, the GO II/33 became Reconnaissance Group GR II/33 in 1933.
Badge of the contemporary Escadron de reconnaissance 2/33 Savoie/Escadron de drones 2/33. "Seagull of Rhine" of II/33 visible on the bottom.
In 1939, the 33rd Reconnaissance Wing was disbanded, but the GR II/33 took part in the battles of the French Campaign and withdrew to French North Africa on June 20, 1940.
SAVOIE is therefore, not a FREE FRENCH unit, but a unit made up of French aviation personnel from the VICHY air force stationed in North Africa who resumed combat alongside the Allies after the TORCH operation.
Following the tradition established by the Free French Air Forces (FAFL) and applied to "French units" fighting with the Allies, the GR II/33 took the name of a province of France on November 3, 1943: Savoie (Savoy), and was equipped at the end of 1943 with Hawker Hurricanes. In March 1944, becoming operational, the group was provided with Spitfire Mk V for visual reconnaissance (no cameras). The squadron landed in Italy in May 1944 and returned to France on August 20, 1944, in Ramatuelle. On September 23, 1944, the unit was transformed in Dijon on Spitfire Mk IX (still without cameras).
The first F-6 Mustang arrived on January 14, 1945.
It looks like planes weren't assigned to a particular pilot!
44-10889, an F-6C-10NT, coded R7°N is one of the new aircraft delivered from a US depot in England that the Savoie pilots picked up themselves! Having been stored in the open air in the English climate, the planes required heavy maintenance before being operational.
From February until the end of the conflict, SAVOIE carried out a large number of operational missions over Germany.
The F-6 will remain with the squadron until 1953.
- Buy F-6C Mustang™ Expert Set in the Arma Hobby webstore: link
This post is also available in: polski


text:
1911 Encyclopædia Britannica/Dike
DIKE, or Dyke (Old Eng. dic, a word which appears in various forms in many Teutonic languages, cf. Dutch dijk, German Teich, Danish dige, and in French, derived from Teutonic, digue; it is the same word as "ditch" and is ultimately connected with the root of "dig"), properly a trench dug out of the earth for defensive and other purposes. Water naturally collects in such trenches, and hence the word is applied to natural and artificial channels filled with water, as appears in the proverbial expression "February fill-dyke," and in the names of many narrow waterways in East Anglia. "Dike" also is naturally used of the bank of earth thrown up out of the ditch, and so of any embankment, dam or causeway, particularly the defensive works in Holland, the Fen district of England, and other low-lying districts which are liable to flooding by the sea or rivers (see Holland and Fens). In Scotland any wall, fence or even hedge, used as a boundary is called a dyke. In geology the term is applied to wall-like masses of rock (sometimes projecting beyond the surrounding surface) which fill up vertical or highly inclined fissures in the strata.


text:
Correspondence, memoranda, articles, etc. relating to Sneath's medical service in the Gold Cost, British Guiana, Tanganyika and Canada.
Papers of Paul Alfred T. Sneath
- For more information, email the repository
- Advice on accessing these materials
- Cite this description
Scope and Content
Administrative / Biographical History
Paul Alfred T. Sneath was born on the 16 February 1898 in Vancouver, British Columbia, Canada. In 1923 he began working for the Colonial Medical Service as a Medical Officer in the West African Medical Service based in the Gold Coast. He resigned from this post in 1927 and, in the same year, became a Demonstrator, later Lecturer, in the Department of Hygiene and Preventative Medicine at the University of Toronto. In addition to this post Sneath became, in 1928, a Research Assistant, later Research Associate, at Connaught Research Laboratories.
In 1937 Sneath was re-appointed to the Colonial Medical Service and served as First Assistant Government Medical Officer of Health in British Guiana (1937) and then as Deputy Director of Medical Services and Registrar General (1938). In 1940 he was released to serve in the Canadian Army at the request of the Canadian Government but was recalled to the Colonial Medical Service in 1944 at the request of the Colonial Office. From 1944 Sneath served as Deputy Director of Medical Services in Tanganyika Territory (ca. October 1944), Acting Director of Medical Services (March 1945), and Substantive Director of Medical Services (June 1945).
Bodleian reader's ticket required.
Collection level description created by Marion Lowman, Bodleian Library of Commonwealth and African Studies at Rhodes House.
Other Finding Aids
The library holds a card index of all manuscript collections in its reading room and a handlist is also available for this collection.
Listed as no. 41 in Manuscript Collections (Africana and non-Africana) in Rhodes House Library, Oxford, Supplementary accessions to the end of 1977 and Cumulative Index, compiled by Wendy S. Byrne (Oxford, Bodleian Library, 1978).
Conditions Governing Use
No reproduction or publication of personal papers without permission. Contact the library in the first instance.


The Cybernetics of Neuro-Linguistic Programming
Curtis Brackenbury
16 July 2018
The hockey coach / athlete relationship can be visualized as a cybernetic loop in which meaning is constructed through reciprocal feedback. The first feedback loop enables a coach/athlete or team to learn a pattern of behavior that is appropriate for a particular environment. This is an observation action cycle in which observations of what is going on plus what has gone in similar situations informs decision making. The second feedback loop enables the coach/athlete or team to take a break in the action. It occurs because they recognized that the environment has changed and that in order for them to survive/win a new pattern of behavior is required immediately. They then revert back to the first loop.
The cybernetic loop is also used by coaches to not only create an environment that is conducive to learning but be flexible enough to see the athletes for who they are rather than being emotionally driven by what they expect them to be. This developmental coach athlete relationship provides a scaffolding of connection and nurturance while pushing the envelope to support further exploration. The athletes learns with the attuned coaches support that they can tolerate what initially appeared to be intolerable thus widen their window of tolerance. This adaptation leads to a positive change in their behavior traits and an opportunity to reach their goals.


text:
Revista de Biología Tropical
Print version ISSN 0034-7744
ALTRICHTER, Mariana; SAENZ, Joel C; CARRILLO, Eduardo and FULLER, Todd k. Dieta estacional del Tayassu pecari (Artiodactyla: Tayassuidae) en el Parque Nacional Corcovado, Costa Rica. Rev. biol. trop [online]. 2000, vol.48, n.2-3, pp. 689-702. ISSN 0034-7744.
The diet of the white-lipped peccari Tayassu pecari was studied from July 1996 to April 1997 in Corcovado National Park, Costa Rica, through fecal analysis and direct observations. The feces consisted of 61.6% fruits, 37.5% vegetative parts, 0.4% invertebrates and 0.5% unidentified material. These proportions are similar to those reported for white-lipped peccaries diet in South America, but the species consumed were different. In Corcovado, the white-lipped peccary fed on parts of 57 plant species (37 of them fruits). Moraceae was the most represented family. In contrast, the diet of the Peruvian Amazon peccary primarily consists of plant parts (Arecaceae). Costa Rican peccary diet consisted of vegetative parts from Araceae and Heliconaceae. Direct observation showed that peccaries spent 30% of feeding time rooting. Samples taken from rooting sites suggest that peccaries fed on earthworms. Diet differed between months, seasons and habitats. They ate more fruits in coastal and primary forests and more vegetative parts in secondary forest. In the months Octubrer and November the consumption of vegetative parts exceeded fruit consumption.
Keywords : Seasonal diet; fecal analysis; direct observations; Tayassu pecari; white-lipped peccary; rain forest; Costa Rica.


Best ways to fix a white screen on Mac
Your Mac stuck on white screen and you desperately grab your phone to google solutions? As it mostly happens abruptly, you need to find the fast way to bring your Mac back to life. So, let's get down to work right away!
Why my Mac stuck on white screen?
Macs are reliable computers, but on the rare occasions they may encounter trouble and won't load. When this happens, you see a blank white screen, your Mac becomes pretty much unusable, and you keep asking yourself, "Why won't my MacBook turn on?"
Usually, this happens after updating your operating system to a new version, when dealing with incompatible drivers, or if some applications fail to upgrade. This results in a blank screen on Mac until some steps are taken to bring your computer back to its normal state.
How to fix the MacBook white screen
Before you do anything to solve the Mac frozen screen, try an easy fix: check your peripherals. Try to disconnect all of them (printers, scanners, USB devices, etc.) with the exception of the keyboard and mouse. Then reboot your Mac. If it boots up now, one of those peripherals is the source of the plain white screen problem. However, if it fails and your MacBook won't load, check out other possible ways to wake up your Mac.
1. Boot into safe mode
A safe boot feature in macOS and Mac OS X was designed for troubleshooting purposes. It allows to check the disk for all possible file system errors and if needed, a repair would be run. Starting your Mac in safe mode is the first thing you should do when your Mac won't turn on.
To start up in safe mode:
 1. Press the power button, then immediately press and hold the Shift key.
 2. When you see the Apple logo, release the Shift key.
Once you boot using safe mode, the very first thing is deleting cache files. A cache is a place where data is stored temporarily to help things load faster. But eventually, files in a cache become outdated and start to pile up on your Mac, resulting in a white screen problem. Here's a comprehensive guide "How to clear cache on a Mac."
After you've deleted the cache files, you should also remove recently installed applications. But note that dragging them to the Trash is not the right way to remove apps as it leaves behind tons of associated files on your Mac. But don't worry, there is a utility that will help you — CleanMyMac X. Its Uninstaller module is designed to uninstall apps completely, with no leftover parts and pieces behind.
Simply download the app (it's free to try), launch it, choose Uninstaller and select the app you want to delete. Click Uninstall and the application will be removed completely. As simple as that!
As you've removed all the clutter, restart as normal without pressing any keys during startup. Probably you won't see that MacBook white screen anymore.
PRAM/NVRAM is a small amount of memory that your Mac uses to store certain settings and access them quickly. These settings include sound volume, time zone, startup disk selection, and more. If you experience some issues related to these settings, resetting PRAM might fix your MacBook stuck on white screen.
Here's how to reset PRAM/NVRAM:
 1. Shut down your Mac.
 2. Immediately press these four keys together: Command+Option+P+R.
 3. Hold down the keys until you hear the startup sound.
 4. Release the keys.
When your Mac finishes starting up, you should go to System Preferences and adjust some settings that were reset, such as time zone, display resolution, etc.
3. Use Disk Utility to verify or repair disks
Disk Utility can fix several disk problems, including the white screen on Mac. That's why use it to your advantage if the above steps didn't work.
 1. Restart your Mac holding the Command and R keys.
 2. Release the keys when you see the Apple logo.
 3. Click Disk Utility and then click Continue.
 4. Choose the disk you want to repair.
 5. Click the First Aid button.
If Disk Utility says the disk is about to fail, there's nothing you can do — you have to replace it. If it reports that the disk has been repaired, you're done. You can click Show Details to get more information about the repairs.
4. Reinstall macOS
If all the approaches are failing and you still see that white screen on your Mac, you may need to reinstall your operating system. Don't worry, it won't affect your files, apps, user setting, etc. Only a fresh version of the macOS will be installed on your Mac again. Here's how to do that for macOS SierramacOS High SierramacOS MojavemacOS Catalina and macOS Big Sur
Note that sometimes the standard reinstall methods won't work due to the issues with the drive. In this case, you'll need to use the internet recovery to reinstall the operating system.
Follow these steps to reinstall macOS from the internet:
 1. Turn on or restart your Mac.
 2. Hold down the Command+Option+R keys until you see the Apple logo or a spinning globe.
 3. When startup is complete, you'll see the Utilities window.
 4. Choose Reinstall macOS and click Continue.
Follow the onscreen instruction to complete the process.
Once you've brought your Mac to life, make sure to do some maintenance to prevent such unpleasant issues in future. A utility we've mentioned above — CleanMyMac X — will help you keep your Mac in shape for years. Apart from cleaning your Mac from all the junk, it gives you access to all maintenance scripts that allow to quickly optimize the system performance and never worry about the health of your Mac.
With the solutions above, you'll fix the white screen problem on Mac, so that it can function as a new one. Cheers!
Laptop with CleanMyMac
CleanMyMac X
Your Mac. As good as new.


The Environmental Benefits of Meal Kits
environmental benefits of meal kits
Have you considered using home delivery meal kits but thought that, due to the individually wrapping ingredients, it's worse for the environment?
According to research meal kits may actually be better for the environment than your average supermarket shop.
The food system is estimated to comprise 19–29% of global man-made greenhouse gas emissions. Over the recent years we have seen the emergence of home delivery meal kits such as Riverford and Gousto, who have tapped into a rising trend. As a society our lives are getting busier, these services offer to save consumers time by delivering the needed ingredients for home cooked meals. This eliminates time spent on planning meals and purchasing ingredients.
Despite their ease, how environmentally friendly are these helpful kits?
Comparing Emissions From Meal Kits Vs. a Supermarket Shop
A study in the Resources, Conservation and Recycling journal delved into this topic when they compared the greenhouse gas emissions of supplying a meal as a meal kit (from Blue Apron), to supplying the same meal through a traditional supermarket shop.
How a Traditional Supermarket Shop Produces More Emissions
emissions associated with a supermarket shop
Many people perceive meal kits as worse due to the packaging of pre-portioned ingredients. However, the study found that, when considering the full life cycle, supermarket meals exceeded meal kits' emissions by 33% (6.1 kg CO2e/meal vs 8.1 kg CO2e/meal).
There were a few reasons for this:
 1. The meal kits' direct-to-consumer model presents large emissions savings (1.35 kg CO2e/meal) as supermarkets' brick-and-mortar model results in food waste from non-purchased products.
 2. A supermarket's food waste has higher emissions than meal kit's processing waste, as it is further down the supply chain. Meaning whilst food from meal kits may be wasted when packaging the food in the factories, the food thrown away by supermarkets includes transportation and refrigeration emissions.
 3. Traditional supermarket shopping produces a greater amount of emissions through consumer food waste, exceeding meal kits by an average of 0.86 kg CO2e/meal. The difference can be attributed to the pre-portioned ingredients meaning less is thrown away.
 4. Meal kits use refrigeration packs to store the food, which produce less greenhouse gas emissions than retail refrigeration. However, the emissions produced by refrigeration packs is dependent on the type used, as water-based refrigerant packs produce much less than chemical-based refrigerants. Moreover, supermarket refrigeration has the potential to improve in the future and reduce emissions.
 5. Last-mile emissions (the transport to the consumer's home) are 0.45 kg CO2e/meal greater for supermarket meals than for meal kits. This is due to it being a round trip made by an individual consumer with variance in vehicle type, distance, and number of meals transported per trip. On the other hand, meal kits are delivered by a package or mail service via a truck on an optimised route. This finding supports previous findings that food delivery services produce less greenhouse gas emissions than consumers' individual trips to the supermarket.
Instances Where Meal Kits Produce Higher Emissions
packaging associated with meal kits
Aside from this, meal kits had higher emissions than supermarket meals in two instances:
 1. Meal kits had higher end-of-life emissions associated with the packaging that ended up in landfill. As a result, recycling packaging resulted in a 14% decrease in emissions for meal kits and 4% for supermarket meals.
 2. Packaging emissions for meal kits exceed supermarkets by an average increase of 0.17 kg CO2e/meal.
Total food waste comprises an estimated 2% of the U.S.' national greenhouse gas emissions (Venkat, 2011). Thus, even if meal kits do increase the ratio of packaging-to-product they reduce food waste, which can result in a net environmental benefit. The study's results supported a 2017 study which also found that meal kits yield lower food waste, higher packaging, and lower last-mile transportation emissions, with an average overall reduction in greenhouse gas emissions of 4% (Fenton, 2017).
How Supermarkets Can Decrease Emissions
It is still important to note that there are ways to decrease supermarkets' emissions without the increase in packaging that comes with meal kits. This includes:
 - Retailers recovering supermarkets' food waste to provide socioeconomically disadvantaged groups with food.
 - Improving the use of analytics to predict customer shopping behaviour to avoid overstocking.
 - Engaging with customers to implement regimes such as meal planning to reduce consumer food waste.
Overall, it seems that meal kits can not only benefit your lifestyle but also the environment. Especially for busier people who struggle to put time aside for meal planning, opting into these home delivery services could seriously help you reduce your carbon footprint by reducing your food waste. However, there is still a lot of packaging waste associated with these meal kits so we recommend opting for ones who are more environmentally conscious.
Check out our recommendations on which meal kits to go for here.
Leave a Reply


text:
Grammy-nominated musician from Tennessee Valerie John has partnered with the Newport Festivals Foundation, the organization behind the Newport Folk and Jazz Festivals, Third Man Books, and Gibson, to donate instruments and books to music programs in Tennessee and Mississippi.
On January 29, 30 and 31, Valérie and illustrator Marcela Avelar will travel to different organizations to read her new children's book Someone to Love: The Story of Sweet Little Baby Banjolele by Valerie John. At each stop, you'll donate copies of the book to local music programs. In addition, the Newport Festivals Foundation and Gibson will donate ukuleles to each concert program. Deering's banjoles will be donated to the National Museum of African American Music and the Grammy Museum.
In total, over $5,000 in books and instruments including two Deering Banjoleles, 25 guitars, and more than 30 books will be donated.
Valerie John said, "Music is a universal language. I am delighted to partner with the Newport Festivals Foundation in these donations because by sharing music education with students, we cultivate synergy and ignite the creativity of young minds. Game tools increase your neural network usage. Music enriches mental and emotional health when many children need more mental support. Education in music also enhances mathematical skills and improves memory and language abilities. Together, these are seeds for the minds of young dreamers to begin building a more harmonious world."
Sunday January 29th – The Blue Room @ Third Man Records – Nashville, TN
Third Man Box presents a kids' event featuring Grammy-nominated musician Valerie John! Valerie and illustrator Mars Avelar will celebrate their children's book Someone to Love: The Story of Sweet Little Baby Banjolele by Valerie John. The event will feature music, sing-along songs and activities all planned for kids and led by Valerie and Mars! Doors 1 p.m. Activities start at 2 pm. Admission is $5. Free for children 12 and under. The books will be available for purchase. Book signing after presentation. Advanced ticket link here.
Monday, January 30 – Stax Museum of American Soul Music – Memphis, Tennessee
Put on your favorite pajamas or comfy clothes and roll on the floor reading a book and a short performance by Valerie June Monday, January 30th, at 6pm at Stacks Museum! All ages are welcome, and entry is free.
Tuesday, January 31st – Grammy Museum Cleveland, MS
To celebrate GRAMMY® Week 2023, the GRAMMY Museum® Mississippi is excited to welcome Valerie John to Sanders Soundstage for a performance and conversation about her career and latest GRAMMY-nominated album Call me a fool In addition to her first children's book entitled Someone to Love: The Story of Sweet Little Baby Banjolele by Valerie John. Tickets on sale now here! $15 for museum members and $30 for non-members
"The Newport Festivals family is very excited to support Valerie and the amazing work she is doing for local music education programs here," said Jay Sweet, Executive Director of the Newport Festivals Foundation. "One of the company's founders was Pete Seeger, who traveled this country with a banjo, singing to young people about compassion and the power of music. We know Pete would be very happy to see Valerie continue that legacy. That's the essence of folk spirit."
About the Newport Festivals Foundation:
The Newport Festivals Foundation is a 501(c)(3) for-profit corporation whose mission is to enhance the heritage of folk festivals and jazz festivals and expand their impact through educational initiatives that celebrate innovation while preserving the deep traditions inherent in jazz and folk music. The Foundation's goal is to provide opportunity and inspiration through exposure and to facilitate the gathering of resources for musicians to celebrate and innovate. Emphasis is placed on creating unique experiences to spark engagement through a variety of initiatives taking place across America, including instrument donations, performances in schools, and support for music education programs with partner organizations.
For more information about Newport Festival's educational initiatives, please visit _URL_.


text:
- Press Release
- Sep 29, 2022
NOAA SEC Space Weather Outlook #01-9 6 March 2001
Official Space Weather Advisory issued by NOAA Space Environment Center
Boulder, Colorado, USA
SPACE WEATHER OUTLOOK #01-9
2001 March 06 at 10:00 a.m. MST (2001 March 06 1700 UT)
**** SPACE WEATHER OUTLOOK ****
Summary For February 26-March 4
No space weather storms occurred.
Outlook For March 7-13
Space weather may increase to minor levels. Isolated category R1 (minor)
radio blackouts will be possible during the period. Should an R1 radio
blackout occur, expect the following system effects on the sunlit side
of Earth: minor degradation of high-frequency radio communication with
occasional loss of radio contact, and brief degradation of
low-frequency navigation signals.
Data used to provide space weather services are contributed by NOAA,
USAF, NASA, NSF, USGS, the International Space Environment Services
and other observatories, universities, and institutions. More
information is available at SEC's Web site _URL_ or
_PHONE_. The NOAA Public Affairs contact is Barbara McGehan
at _EMAIL_ or _PHONE_.


text:
Front Porch is an organization committed to connecting rural populations to resources required to improve the conditions of life and expand economic opportunities.
In low-income rural populations around the world, a pattern exists in which the people of these communities lack access to resources that they need not only to survive, but to thrive. Over 2/3 of these populations have limited or no access to necessities, including adequate shelter, potable water, education, and health care. The most isolated communities are often outside the view and awareness of governmental and non-governmental agencies and are the last people to receive needed help—if help is provided at all. These are the communities that we serve, as they are the most entrenched in the poverty cycle.
We help communities define their needs through a community visioning process and provide the strategies needed to access resources. This may come in the form of seed money to get a school or resource center built, connection to agency support and/or training, providing guidance to local leaders in navigating resources accessibility, connecting people with needed tools or technology to learn or improve skills, the design, materials and program to build a community resource center—the opportunities are endless. Once we help identify a community's needs, Front Porch provides assistance by preparing a plan, establishing the program, and facilitating the creation of a long-term process to maintain progress and function.


text:
Most Active Stories
Onondaga Lake's mercury levels dropping more than expected
Even though dredging and capping operations to clean up contamination in Onondaga Lake is in its early stages, a scientist consulting on the project says mercury levels are dropping better than expected.
Honeywell only began its dredging and capping operations on a part of the lake this summer, but Syracuse University professor Charles Driscoll says the decrease in mercury levels found in fish in the lake is "unbelievable" compared to where they were about four years ago.
"Now we have a ways to go; they're still above advisory levels," he says.
Onondaga Lake became contaminated due to nearby industrial operations and chemical production. A federal lawsuit required Allied Chemical, since purchased by Honeywell, to reduce PCB, benzene and mercury levels in the lake. The $451 million remediation project will take about five years.
With just one year of that work in the books, Driscoll foresees increasingly better numbers.
"We anticipate they will continue to drop," he says of mercury levels.
Around the Nation


text:
Light, Memory and Colour
Medieval Europe witnessed the beginnings of a scientific outlook that saw light as a phenomenon requiring rational explanation. This new outlook, however, was informed by a prevailing onto-theological world-view that assumed all knowledge as revealed truth.
Coinciding with this nascent scientific view were important changes in the understanding and perception of space. Whilst the "perspectivisation" of space was not in full swing until the early Renaissance, the cultural conditions necessary for such a transformation were already in place by the end of the thirteenth century.1 Indeed, a number of key developments occurred during this period that lay the foundations for a new perspective...


text:
Education track: Education plays an integral role in the continued construction and progression of our society. In addition to academic development, formal and informal institutions of education serve as sites for the development of complex social, cultural, and linguistic skills and identities. The Cambio de Colores conference offers breakout sessions and workshops that explore educational issues, policies, and practices that influence Latino/a, immigrant, and refugee learners of all ages and backgrounds.
The Cambio de Colores conference is a multistate conference about integration of immigrants in new destinations in the Midwest. It is a professional development opportunity that engages practitioners, researchers, and those working with immigrant communities in sharing experiences and knowledge that facilitate the integration of immigrants in new settlement areas.
The 16th annual conference will take place in St. Louis on June 14, 15 and 16th, 2017. The theme this year is "Todos Juntos: Collaboration and Unity in Uncertain Times."
The following themes provide the conference framework:
1. Change and Integration
2. Civil Rights and Political Participation
4. Entrepreneurship and Economic Development
6. Youth Development


text:
In 2020, I found wild Giant Water Bug in several places, but where can I find the habitat of Giant Water Bug in Japan, and can even an amateur find them?The scientific name for the Japanese Giant Water Bug is Kirkaldyia deyrolli.
The Giant Water Bug is an interesting species in captivity, but I wanted to find one in the wild, learn about its actual habitat, and maybe even take some ecological photos!
I was in a hurry and couldn't get a good shot, but I was happy to find a Giant Water Bug and see it preying on a frog.
The Giant Water Bug from Japan became a protected species in 2020, but it is not subject to regulation for individuals to raise it as a hobby.
Expedition to Giant Water Bug's habitat
I have never thought of a collecting expedition because I don't have a driver's license. It would be too difficult to go to a distant wetland by train with a large luggage.
In 2020, a friend of mine invited me to go collecting, and I went looking for Giant Water Bug several times.
As a result, I found a Giant Water Bug on the second trip, and on the third trip, I asked my wife to drive us to a different location and found a Giant Water Bug.
Therefore, the level of difficulty in collecting Giant Water Bug in the Kanto region of Japan is such that a knowledgeable person can find it even if they start from scratch.
Aquatic Insects in the Year 2020
Looking for the Giant Water Bug resulted in finding other aquatic insects as well. Here are a few photos.
An approach to finding a habitat for Giant Water Bug
If you were trying to find the habitat of the Giant Water Bug from scratch, what would be the best way to do it?
Ask someone to pinpoint the Giant Water Bug's habitat
The easiest way is to ask someone to pinpoint the habitat of the Giant Water Bug. However, this is not interesting because it is a matter of course that wherever they are, they are.
I have had people tell me where to find Giant Water Bug, but it is important to have the experience of finding the habitat of Giant Water Bug by yourself based on a hypothesis.
Narrow down the approximate habitat area from past records.
If I were to be too specific, it would identify the habitat, so I will be blunt. For example, if I write about XX prefecture, it is too wide and I can't consider the habitat. If it's not in your hometown, you will have to narrow it down to the city level because of the travel time to get there.
From past records and information about seeing Giant Water Bugs on Twitter, we can usually tell which areas have been confirmed to be inhabited by them even in the recent past.
For example, the Giant Water Bug is widespread and thinly distributed in the northern Kanto region of Japan. They fly several kilometers during the breeding season, so there is no reason to go there just because you happen to find one in the city.
What should I do to narrow down a few more candidates?
Consider the habitat requirements of the Giant Water Bug.
If we work backwards from the causes of the Giant Water Bug's decline, we can see where they are still breeding today.
The Giant Water Bug is the apex of the ecosystem and is extremely vulnerable to pesticides. Therefore, a place where aquatic insects, which are in the lower part of the ecosystem, are also abundant and free from pesticides is a good candidate.
Specifically, the place where the pesticides of the fields flow downstream and crayfish and bullfrogs have invaded and become dead colored water without water plants is unlikely.
If there are enough small shrimps, loaches, or some aquatic insects in the net each time, the expectation of finding a Giant Water Bug will increase.
On the other hand, if the net is filled with crayfish every time, or if we hear the croaking of bullfrogs, we will sigh and retreat.
In terms of probability, Giant Water Bug is not found in fast flowing or deep water, because its larvae are not very good swimmers.
Giant Water Bugs are more likely to be found in waterways next to rice fields and unbanked waterways up to 20cm deep. Concrete waterway with fast flowing water are unlikely to have Giant Water Bugs, and even if there are Giant Water Bugs, it is probably just a coincidence that they have been swept away.
TThe photo shows a place where there is supposed to be a nice waterway, but it has just been renovated. There were still some small Water Beetles swimming around in the surrounding puddles, so the Giant Water Bug was unlikely.
What is "Yatsuda"? Rice paddies in the valley.
There is a topography called "Yatsuda" as a habitat for Giant Water Bug that meet these conditions. Yatsuda is a paddy field environment using "Yato".
Yato is a valley-like topography formed by the erosion of hills. Both sides are hilly, and rice fields spread between them, and there are reservoirs and thin water flows upstream.
Although the impact of pesticides is limited in such topography, it is difficult to modernize, it is easy to become fallow fields or abandoned, and it is easy to become land.
How to view and manage potential sites in Google Maps
I was going to write about how to preview collection spots in Google Maps and how to manage candidate sites in Google Maps, but it would be too long, so I'll write about it in another article.
We are unable tPlease note that I cannot answer questions like "Please tell me the habitat of Giant Water Bug" from strangers. I can't answer questions like that. We'll get to know each other better and then we'll go collecting and observing together.


text:
Broadband News from Around the World: Microsoft for Africa & National Broadband Network in Australia
Africa, Australia, Broadband's Impact, Europe, International, National Broadband Plan, Wireless
February 23rd, 2013
WASHINGTON, February 18, 2012 – A recent wrap-up of global broadband news included the following items: Microsoft 4Afrika Initiative Microsoft recently launched the Microsoft4Afrika Initiative, in a push to promote economic and broadband development in Africa. The initiative hopes to promote inexpensive smartphone usage on the African continent, and teach digital literacy to citizens. This […]
U.S. Takes Top Spot in Global Connectivity Study Commissioned by Nokia
Broadband Data, International
February 1st, 2010
WASHINGTON, February 1, 2010 – The United States took the top spot on the 2009 Connectivity Scorecard, a research project linking increased national technological connectivity with socio-economic transformation.
Professor Leonard Waverman of the London Business School and economic consulting firm LECG put together the scorecard focusing on 50 countries using metrics such as national usage, skills and infrastructure.
Waverman found that the United States leads more categories than any other nation – its person computer penetration of businesses is excellent and the nation takes top prize in secure server deployment. However, he found that consumer infrastructure does not score as highly for the United States as its other metrics and its "broadband and 3G penetration are average."


DX and the Radio Amateur: Ask Dave #47
What's DX? How does it work? Is it something you want to do? Give it a try! This video tells how.
1 Response to DX and the Radio Amateur: Ask Dave #47
 1. Richard Montel KW4MQ says:
 I totally disagree about using "alternate phonetics". The selection of words in the International Phonetic Alphabet was carefully chosen with foreign accents in mind. An Asian 'Romeo' might come out sounding more like 'Lomeo', but I still know it is an 'R'. They are a common standard around the world. I have 40 years experience as a pilot, including international flying.The IPA is a Godsend to aviation where lives often depend on understanding what was said on the radio.
 When I hear Hams using non-standard phonetics, it really slows down my ability to grasp what they are trying to communicate via phonetics. Please, please, please discourage that practice.
Leave a Reply


text:
Mobile Analytics Design Assignment 2023 Business Finance
2023 Mobile Analytics Design Assignment Instruction Note You need the following materials to complete this assignment 1
Mobile Analytics Design Assignment Instruction
You need the following materials to complete this assignment:
1. An active IBM Cognos Analytics account.
2. Please download WA_HR_Training.csv file from myLeo Online onto your computer.
The WA_HR_Training.csv file records information about the costs of HR training courses in a company. The information include in which year a course cost occurs (i.e., the Year column), for which position a course cost occurs (i.e., the Position column), for which department a course cost was spent (i.e., the Department column), etc. Use IBM Cognos Analytics to create a dashboard, and answer the HR manager's following questions:
1. Summarize the Course Cost spent by Year in a bar chart. Sort the chart in a descending order, and answer in which year most course costs were spent.
2. Build a Pie chart to show how Course Cost is spent among Organizations.
3. Use Organization, Department, Position, Internal Hires, External Hires, and Course Cost to build a Driver analysis. What implications can you get from this analysis? Should the manager use one driver or two driver analysis? Which two drivers should be chosen to predict Course Cost? Why? (Hint: You can find Driver analysis under All visualizations when you Change visualization of the chart.)
4. Add a data player controlled by the Year factor, and dynamically show the changes of three charts you created above over the year. (Hint: You can create a data player of Year, and then change the chart type to Data player under All visualizations when you Change visualization of the chart.)
What to Submit
Create a Word document, and name it as "Mobile Analytics Design Project". In the Word document, please make screen captures of charts for questions 1, 2, 3, and 4. Write your interpretations of the results given by the charts. Question 4 has a dynamic chart. You only need to make a screen capture of your chart at one time sport. Any time spot will work.
Please submit the Word document to myLeo Online.
Useful Tips for Completing this Assignment
1. Upload data file. You need to upload WA_HR_Training.csv file to Cognos for data analysis. To upload the file, log in your Cognos account. In the lower left corner of the screen, click New, then Upload Files, as shown below. Find the WA_HR_Training.csv file on your computer, and upload it to Cognos.
2. Create dashboard. Once the data file is uploaded, click the three dot icon, then Create dashboard to start the dashboard building.
3. Save dashboard. To save a dashboard, click the save icon in the upper left corner, and then name the dashboard. You can use any name for the dashboard.
4. Link to your dashboard (Optional).
To generate a link to your dashboard, click the share icon in the upper right corner. I just want to show you this function. It is not required for this assignment. When you can access to the paid version of Cognos, you will be able to share your system design with your colleagues via the link.
We give our students 100% satisfaction for their assignment, which is one of the most important reasons students prefer us from other helpers. Our professional group and planners have more than ten years of rich experience. The only reason that our inception days, we have helped more than 100000 students with their assignments successfully. Our expert's group have more than 2200 professionals of different topics, and that not all; we get more than 300 jobs every day more than 90% of the assignment get the conversion for payment.
Place Order Now


text:
will open. Click on the "Colors an Lines" tab, then select "Fill Effects... " from the Color drop down menu, then click the "Pattern" tab. Select black in the window under "Foreground:" and white in the window under "Background:" Select the pattern you want, then click "OK." Click "OK" in the "Format Data Series" dialogue box.
- The column on your chart should now contain a black-and-white fill pattern. Repeat these steps for the other columns.
- Repeat steps a. and b. Click the button next to "Rows" under "Series in." Click the "Series" tab, and remove "Adults" and "Spawning" life stages. Click "Next," and repeat steps d. and e. You now have a second column chart that shows the relative abundance of alewife eggs, larvae, and juveniles in each salinity zone for each month. Adjust the column fills if necessary.
- When are spawning adults most abundant?
- When are eggs most abundant?
- When are larvae most abundant?
- When are juveniles most abundant?
- When are adults most abundant?
- Are any of these life stages more abundant in certain salinity zones?
For the Winyah Bay alewife example, adults and spawning adults are most abundant in March, April and May; eggs are most abundant in March, April and May; larvae are most abundant in March, April, May and June; juveniles are abundant from April through November. Notice that all life stages of alewife are absent from December through February. Different life stages of alewife appear to have different salinity preferences. Alewife eggs and larvae are found only in salinities of 0 - 0.5 ppt. Juveniles are also confined to this salinity zone during April, May, June, and July; but are found in the 0.5 - 25 ppt salinity zone between August and November, and in the > 25 ppt zone between September and November. Alewife adults are found in all three salinity zones, but spawning adults are only found in the 0 - 0.5 ppt zone.


text:
Submitted to: Revista Manejo Integrado de Plagas
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: May 6, 2011
Publication Date: March 5, 2012
Citation: Kane, E.C., Ochoa, R., Erbe, E.F., Mathurin, G. 2012. Raoiella indica Hirst (Acari: Tenuipalpidae): An island-hopping mite pest in the Caribbean. Revista Manejo Integrado de Plagas. 57(3-4):215-255.
Interpretive Summary: Plant feeding mites cause severe damage to agricultural crops around the world, costing billions of dollars annually. This paper addresses the identification and geography of the most important invasive mite pest species that attacks palms worldwide. Major infestations of this flat mite in the Caribbean islands of Dominica, Martinique, and Saint Lucia are reported. This study will be important to and used by plant quarantine officers, plant protection, ornamental industry, extension workers and state agriculture departments.
Major infestations of the flat mite species Raoiella indica Hirst have been reported from the Caribbean islands of Dominica, Martinique, and Saint Lucia. Specimens from these localities were examined using traditional light microscopy and low-temperature scanning electron microscopy (LTSEM) techniques. While little is known about the biology of this mite, its recent appearance in the Caribbean in both commercial coconut and banana plantations has raised concerns about its potential as an invasive pest.