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How to convert from Flutter to Ionic + Angular
Converting from Flutter to Ionic + Angular can appear daunting at first, but with a systematic approach, it becomes manageable. Below, we will delve into the key steps and considerations, optimized for those proficient in Flutter but not as experienced with Ionic and Angular.
Understanding the Differences Between Flutter and Ionic + Angular
Before diving into the technical aspects, it's essential to understand the fundamental differences between Flutter and Ionic + Angular:
 - Framework: Flutter is a UI toolkit based on the Dart programming language. On the other hand, Ionic is a hybrid framework using HTML, CSS, and Angular for mobile and web apps.
 - Components: Flutter uses its own custom widgets, while Ionic uses standard web technologies along with customizable components.
 - State Management: Flutter often utilizes systems like Provider or Bloc, whereas Angular applications leverage RxJS and services.
Setting Up the Ionic + Angular Project
The first step in conversion is to set up a new Ionic + Angular project. You need to have Node.js and npm installed on your system to proceed.
npm install -g @ionic/cli
ionic start myApp blank --type=angular
cd myApp
Migrating UI Components
In Flutter, UI components are primarily created using widgets. In Ionic + Angular, we rely on HTML templates and Angular components.
Converting Flutter Widgets to Ionic Components
Consider a simple Flutter widget:
class MyWidget extends StatelessWidget {
 @override
 Widget build(BuildContext context) {
 return Container(
 color: Colors.blue,
 child: Text('Hello Flutter'),
 );
 }
}
The equivalent in Ionic + Angular would be:
<ion-content>

 Hello Ionic + Angular

</ion-content>
This HTML structure utilizes Ionic's ion-content which is akin to Flutter's Container.
Handling Navigation
Flutter uses a Navigator for route management, whereas Ionic + Angular use Angular Router for navigation.
Converting Flutter Navigator Routes
Example Flutter code:
Navigator.push(
 context,
 MaterialPageRoute(builder: (context) => SecondScreen()),
);
Equivalent code in Ionic + Angular:
First, define your routes in app-routing.module.ts:
const routes: Routes = [
 {
 path: '',
 component: HomePage
 },
 {
 path: 'second-screen',
 component: SecondScreenComponent
 }
];
Next, navigate programmatically with Angular Router:
import { Router } from '@angular/router';
constructor(private router: Router) {}
this.router.navigate(['/second-screen']);
State Management Conversion
In Flutter, state management can vary widely (e.g., using setState, Provider, or Bloc). In Angular, state is often managed using services and RxJS for reactive programming.
Converting a Simple State Management
Consider this Flutter code to increase a counter:
class _MyHomePageState extends State<MyHomePage> {
 int _counter = 0;
 void _incrementCounter() {
 setState(() {
 _counter++;
 });
 }
 @override
 Widget build(BuildContext context) {
 return Scaffold(
 appBar: AppBar(
 title: Text("Flutter Counter"),
 ),
 body: Center(
 child: Column(
 mainAxisAlignment: MainAxisAlignment.center,
 children: <Widget>[
 Text("$_counter", style: Theme.of(context).textTheme.headline4)
 ],
 ),
 ),
 floatingActionButton: FloatingActionButton(
 onPressed: _incrementCounter,
 tooltip: "Increment",
 child: Icon(Icons.add),
 ),
 );
 }
}
Equivalent Angular code would look like this:
Create a service counter.service.ts:
import { BehaviorSubject } from 'rxjs';
export class CounterService {
 private counter = new BehaviorSubject(0);
 currentCounter = this.counter.asObservable();
 incrementCounter() {
 this.counter.next(this.counter.value + 1);
 }
}
Use the service in the component:
import { Component } from '@angular/core';
import { CounterService } from './counter.service';
@Component({
 selector: 'app-home',
 template: '
 <ion-header>
 <ion-toolbar>
 <ion-title>Ionic Counter</ion-title>
 </ion-toolbar>
 </ion-header>
 <ion-content>

{{ counter }}

 <ion-fab>
 <ion-fab-button (click)="increment()">
 <ion-icon name="add"></ion-icon>
 </ion-fab-button>
 </ion-fab>

 </ion-content>
 '
})
export class HomePage {
 counter: number;
 constructor(private counterService: CounterService) {
 this.counterService.currentCounter.subscribe(
 counter => this.counter = counter
 );
 }
 increment() {
 this.counterService.incrementCounter();
 }
}
Conclusion
Converting from Flutter to Ionic + Angular involves a series of straightforward but detailed steps. By understanding the components, navigation, and state management practices in both frameworks, you can adeptly migrate your existing Flutter application into an Ionic + Angular project. While the tools and syntax may differ, the underlying principles of building reactive, user-friendly applications remain consistent.
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text:
Hello, This is regarding Multi-crrier IM measurement for GSM Base station. I am using MXA (N9020A) for this measurement. ACP mode under spectrum Analyzer is used for this measurement. Noticed thata there two methods for the ACP measurment, IBW method and RBW method. What are the differnce between them. Can somebody point me some literature on this?. Is this ACP method valid only for WCDMA and LTE?. I mean is this ACP screen is valid for measuring GSM multi-carrier IM?. For the following configuration 6 GSM carriers and the offset is 2.8 MHz. IBW method with IBW of 100 KHz, RBW/VBW 100 KHz Span 25 MHz. I am sseeing a spike in the 2.8 MHz offset (around 5 dB higher than nornal IM signal) with ACP screen. But with normal swept SA method with above seetings, the spike is not there. Just wondering is this ACP method adding anything.
The difference between the Resolution Bandwidth (RBW) method and Integrated Bandwidth (IBW) method is that the RBW method tunes to each offset and sets the resolution bandwidth to a value close to the bandwidth of the offset and sweeps the offset in zero span. The average power is then computed from the time domain trace and the relative power to the carrier is calculated.
The integrated bandwidth method integrates the power in each of the offsets and calculates the relative power to the carrier. The integration technique is discussed in detail in App Note 1303.
This RBW method is primarily used for cdmaOne and cdma2k where there is a 30 kHz offset close to the carrier. This offset is small relative to the span so the IBW method variance is large due to the small number of trace points in this narrow offset. The IBW method is recommended in almost all other cases including WCDMA and LTE.
I would also recommend the N9071A GSM/Edge application which has been updated to handle multi-carrier signals and automates these measurement. More information is available here:
Hello, Thanks for the reply. I do have N9071A-3FP installed in my MXA. The version is 1.3.48804.23899. Is it latest?
Regarding the Multi-Carrier IM measurement, I am using the ACP screen in the SA mode. I have 6 GSM carriers spaced at 2.8 MHz. In the "offset limits" tab, I am entering offset freq as 2.8 MHz (I am interested only for offset A=2.8 MHz). There are two options for measuremnt, IBW and RRC Weighted. What is the "RRC Weighted method"? As per 3GPP method, The IM productes should be measured in 100 KHz RBW and the carrier also at 100 KHZ RBW. So, I am selecting 100 KHz as IBW. Under the offset BW, I am selecting RBW=100 KHz and VBW=100 KHz. Is this set up correct?. I am confused about the IBW and RBW settings here. Appreciate your help.

source: openbmb/Ultra-FineWeb


primary zone on the DNS server in the branch office.
 Answer: B Explanation:
 A stub zone is a copy of a zone that contains only those resource records necessary to identify the authoritative Domain Name System (DNS) servers for that zone. A stub zone is used to resolve names between separate DNS namespaces. This type of resolution may be necessary when a corporate merger requires that the DNS servers for two separate DNS namespaces resolve names for clients in both namespaces.
 A stub zone consists of:
 - The start of authority (SOA) resource record, name server (NS) resource records, and the glue A resource records for the delegated zone.
 - The IP address of one or more master servers that can be used to update the stub zone. _URL_
 Question No: 226 – (Topic 3)
 Your network contains two servers named Server1 and Server2 that run a Server Core installation of Windows Server 2008 R2. Server1 has the SNMP Service installed.
 You need to ensure that Server2 can send SNMP traps to Server1. What should you do?
 1. On Server2, run dism /online /enable-feature /featurename:snmp-sc.
 2. On Server1, run oclistsnmp-sc.
 3. On Server2, run oclistsnmp-sc.
 4. On Server1, run dism /online /enable-feature /featurename:snmp-sc.
 Answer: A Explanation:
 To install a feature:
 Dism /online /enable-feature /featurename:lt;namegt; To remove a feature
 Dism /online /disable-feature /featurename:lt;namegt; _URL_
 Question No: 227 – (Topic 3)
 Your network contains an Active Directory domain named contoso.com. The domain contains a server named Server1 that has the Print and Document Services server role installed.
 Server1 contains 200 shared printers.
 Currently, none of the shared printers are listed in Active Directory.
 You need to ensure that all of the shared printers on Server1 can be located by searching
 Active Directory.
 Which tool should you use? (Each correct answer presents a complete solution. Choose two)
 1. Setprinter.exe
 2. Printui.exe
 3. Prnmngr.vbs
 4. Print management
 5. Pubprn.vbs
 Answer: D,E
 Explanation: Correct answer(s): D, E
 Print Management provides a single interface that administrators can use to efficiently administer multiple printers and print servers
 _URL_ Pubprn.vbs – Publishes a printer to the Active Directory Domain Services. _URL_
 Question No: 228 – (Topic 3)
 Your company has a server named Printer1 that runs Windows Server 2008 R2. Printer1 has the Print and Document Services server role installed.
 You need to reduce the number of events registered in the system log on Printer1. What should you do?
 1. Open the Event Viewer console. Create a custom view for the system log. Exclude the events that are notified by Event ID 10 from the filter.
 2. Open the Print Management console. Open the properties of Printer1 and clear the Log spooler information events option.
 3. Open the Print Management console. Open the properties of Printer1 and clear the Show informational notifications for network printers option.
 4. Open the Print Management console. Open the properties of each individual printer on Printer1 and clear the Enable advanced printing features option.
 Answer: B
 Explanation:
 See sample below:
 Ensurepass 2018 PDF and VCE
 Question No: 229 – (Topic 3)
 Your network contains an Active Directory domain. You have 100 remote users who have client computers that run Windows 7.
 The client computers are joined to the domain. The corporate security policy states that users working offline must be denied access to the files on the corporate file servers.
 You need to configure the network to meet the following requirements:
 - Support the corporate security policy.
 - Minimize the amount of time it takes for remote users to access the files on the corporate file servers.
 What should you enable?
 1. shadow copies on the client computers
 2. shadow copies on the corporate file servers
 3. transparent caching on the corporate file servers
 4. transparent caching on the client computers
 Answer: D Explanation:
 IT professionals can take advantage of the Windows 7 file sharing enhancements to further improve user productivity in branch offices. Windows 7 provides:
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text:
Today, we will be crushing on Miss Fatima Oyiza Ademoh from Kogi state.
Miss Fatima Oyiza Ademoh is the founder and CEO of AjimaYouth Empowerment Foundation.
She has over six years of experience in business development, entrepreneurship, agribusiness and more recently, the energy sector.
Fatima is currently the project manager for the US African Development Foundation- funded off-grid energy project implemented by Ajima Farm in Nigeria.
Fatima is an entrepreneurship and finance lecturer at Baze University in Abuja.
Fatima is a volunteer for the Tony Elumelu program (TEEP), where she mentors TEEP finalists across Africa during their entrepreneurial training.
Fatima holds a BSC in Finance from American University of Nigeria and an MSC in Financial Risk Management from the University of Leeds UK.
Upon completion of the Mandela Washington Fellowship, Fatima plans to scale up the Ajima Farm's off-grid energy project to promote access to energy services for rural off-grid communities and agribusinesses.
Having grown in an environment where agricultural communities could not access electricity, which led to the loss of many perishable goods, Fatima decided to work towards a solution; she developed the Waste to Watt project, the first mini grid biogas to the power system in Nigeria, which has provided renewable electricity to two rural communities, with over 1,100 people.
Fatima is passionate about using clean energy sources to electrify rural off-grid communities and businesses.
Her passion and work in social entrepreneurship has won her several awards in the past, including The Rockefeller Foundation 2012 Innovation Competition, The 2017 British Council Social Impact Award and the 2017 Young Energy Leader Award by the African Utility Week Industry Awards.
BY MAIMUNA BAGUDU

source: m-a-p/FineFineWeb


Configuring UrbanCode Deploy integrations#
Use UrbanCode Deploy applications in your deployments and pipelines.
Obtain a token from your UrbanCode Deploy server. When you create the UrbanCode Deploy token, specify admin as the user.
This task requires that you are an HCL™ Accelerate administrator.
After you configure an integration, create tasks to run UrbanCode Deploy applications during your deployments. You can also add applications to your pipeline stages and run them that way.
 1. Click Settings > Integrations > Plugins.
 A list of defined integrations with current information about each integration is displayed in a table.
 2. Click Add Integration for UrbanCode Deploy.
 3. In the Add UrbanCode Deploy Integration window, enter a name for the integration, and in the UrbanCode Deploy server URL field, specify the URL.
 The format is HTTPS://hostname:port. For example, HTTPS://sampleUCD:8443.
 Note: If you are running UrbanCode Deploy locally, you can substitute _URL_:port in place of localhost. The following graphic illustrates how to use the property:
 4. In the UrbanCode Deploy access token field, paste the token from UrbanCode Deploy.
 5. Click Save.
 The initial synchronization includes four months of data. Depending on the amount of data, this process can take some time.
Synchronization occurs every fifteen minutes but you can synchronize any time by clicking actions Actions > Resync on the Integrations page. To prevent synchronization, click the Disable/Enable field on the Integrations page.
Parent topic: Managing native integrations


text:
First of all, you must save your PowerPoint Document on a Sharepoint Server. Then:
Co-author a presentation
- In PowerPoint 2010, open the presentation that is stored on the server.
Note When one or more other authors does the same, a notification appears in the status bar at the bottom of PowerPoint, together with the total number of co-authors currently working on the presentation. To see the names of the co-authors, click the number in the status bar.
- On the View tab, in the Presentation Views group, click Normal to view your presentation in Normal view.
- In the left pane that contains the Outline and Slides tabs, on the Slides tab, a small icon appears on the lower-right corner of the slide thumbnail that indicates that a co-author is making changes to that slide. Click the icon to see the name of the co-author.
- Another way to see the names of the co-authors of the presentation is to click the File tab, and then click Info on the left side of the screen. The names of the co-authors appear in the middle pane.
- To send an e-mail message or instant message to your co-authors, click Send a Message, and then click Send an E-mail Message or Send an Instant Message.
- When another author saves their changes, PowerPoint notifies you, the original author of the presentation, that changes have been made. On the pane that contains the Outline and Slides tabs, on the Slides tab, an icon appears in the lower-right corner of the slide thumbnail that was changed.
- To see whether other authors have changed your presentation, click the File tab and then click Info. Then, next to Document Updates Available, click Save, and then click Save and Review.
- Then, to see the changes that other authors made, click Review Changes.
- When you click Review Changes, PowerPoint opens a new tab, which is named the Merge tab, on the ribbon and a Revisions pane on the right side of the PowerPoint window. The Revisions pane contains a Slides tab that lists the slides that other authors changed, and a Details tab that lists the changes to the currently displayed slide.
On the Merge tab, you can use the buttons in the Resolutions group to show next and previous changes made by other authors, and accept or reject those changes. To exit Merge view, click Close Merge View.
Note While in Merge view, you cannot merge in new updates from other authors or upload changes to the server. You must complete your review by clicking Close Merge View, which then automatically uploads your changes to the server.
If you always want to review (and then accept or reject) changes that other authors make to all PowerPoint 2010 presentations that you work on, instead of having changes merged with your presentations without notification, do the following:
- Click Options on the left side of the screen, and then in the PowerPoint Options dialog box, click Save.
- Under File merge options for shared document collaboration server files, select the Show detailed merge changes when a merge occurs check box.


text:
|WCED Home page | Media Releases Index page|
21 July, 2011
Replacing inappropriate school structures with brick and mortar buildings
Statement by Minister Donald Grant, Minister of Education, Western Cape
Today I visited Oaklands High School in Lansdowne to inspect the building site of their new school.
The school is one of 20 schools that are being "replaced" in terms of our infrastructure program in the current MTEF.
In 2010 the WCED released its infrastructure plan which aims to address the backlogs in school infrastructure in this province.
This plan includes, among other things, the building of 25 new schools and hundreds of additional classrooms over the next three years. It also includes the replacement of unsafe and unsuitable school structures - which is also a priority for this government.
Therefore, the new plan included targeting schools where there has been a decline in the quality of infrastructure over a long period of time. In most instances, these structures are made from wooden or chipboard materials that were built during the apartheid era.
Replacing inappropriate structures requires building a new school on the existing property. In some projects the new structure is built adjacent to the old structure, therefore learners continue to use the premises of the old school while building is taking place. In other instances, the placement of alternative accommodation such as mobiles is required for learners during the building process. The old inappropriate structures are torn down to make way for the new building site.
Replacing inappropriate structures carries extra costs compared to building a new school on a new site. One has to take into consideration costs such as demolition fees to tear down existing structures. These costs vary from project to project and we have allocated, approximately, an additional R3.5 million on top of the new building costs to each project to make provision for this. Erecting provisional mobile units to house the learners while the building process is underway also carries further costs.
Over the next three years, the WCED have identified and planned to replace 20 schools that were built with inappropriate materials and replace them with brick and mortar structures.
Eight schools are currently under construction. These include:
Twelve schools are in planning stages and include:
At Oaklands High School in Landsdowne, building is currently underway to replace their old school which is a 57 years old wooden, chipboard structure. The project began in February 2010 and is expected to be completed by the end of the year. The total cost of the project is R29.5 million.
The new structure will be brick and mortar and will include the necessary specifications of materials used today. It will also be able to accommodate more learners (1 200 learners).
The new school will include 27 classrooms, 2 computer rooms, a library, school hall, new admin building, new staff/visitor parking, 5 laboratories, 2 specialist classrooms and additional sports facilities to be built on the old existing site once the new building is completed.
We are pleased with the progress of the "replacement plan" and that more learners will now have the opportunity to learn in a more suitable and safe environment where quality teaching and learning can take place.
For enquiries, contact Bronagh Casey: _PHONE_ or _EMAIL_.
Visit our website: _URL_
|© 2011 WCED|


Globally Unique Identifiers
To classify as a node in a VSCP net all nodes must be uniquely identified by a globally unique 16-byte (yes that is 16-byte (128 bits) not 16-bit) identifier. This number uniquely identifies all devices around the world and can be used as a means to obtain device descriptions as well as drivers for a specific platform and for a specific device.
The manufacturer of the device can also use the number as a serial number to track manufactured devices. In many other environments and protocols there is a high cost in getting a globally unique number for your equipment. This is not the case with VSCP. If you own an Ethernet card you also have what is needed to create your own GUID's.
The GUID address is not normally used during communication with a node. Instead an 8-bit address is used. This gives a low protocol overhead. A segment can have a maximum of 127 nodes even if the address gives the possibility for 256 nodes. The 8-bit address is received from a master node called the segment controller. The short address is also called the nodes nickname-ID or nickname address.
Besides the GUID it is recommended that all nodes should have a node description string in the firmware that points to a URL that can give full information about the node and its family of devices. As well as providing information about the node, this address can point at drivers for various operating systems or segment controller environments. Reserved GUID's
A general discussion of UUID's/GUID's is here.
Some GUID's are reserved and unavailable for assignment. This page list these and also assigned IDs.
Grodans Paradis AB controls the rest of the addresses and will allocate addresses to individuals or companies by them sending a request to _EMAIL_. You can request a series of 32-bits making it possible for you to manufacture _PHONE_ nodes. If you need more (!!!) you can ask for another series. There is no cost for reserving a series.
This page contains a list of currently assigned guid's.
Predefined VSCP GUID's
It is possible to create your own GUID without requesting a series and still get a valid VSCP GUID.
Assigned Global Unique IDs IDs Series Reserved to/for
FF:FF:FF:FF:FF:FF:FF:FF:YY:YY:YY:YY:YY:YY:YY:YY Dallas Semiconductor GUID's. This is the 1-wire/iButton 64-bit ID. The device code is in the MSB byte and CRC in the LSB byte.
FF:FF:FF:FF:FF:FF:FF:FE:YY:YY:YY:YY:YY:YY:XX:XX Ethernet Device GUID's. The holder of the address can freely use the two least significant bytes of the GUID. MAC address in MSB - LSB order. Also called MAC-48 or EUI-48 by IEEE
FF:FF:FF:FF:FF:FF:FF:FD:YY:YY:YY:YY:XX:XX:XX:XX Internet version 4 GUID's. This is a 32-bit ID so the holder of the address can freely use the four least significant bytes of the GUID. IP V4 address in MSB - LSB order.
FF:FF:FF:FF:FF:FF:FF:FC:XX:XX:XX:XX:XX:XX:XX:XX Private. Use for in-house local use. The GUID should never appear outside your local segments.
FF:FF:FF:FF:FF:FF:FF:FB:YY:YY:YY:XX:XX:XX:XX:XX ISO ID. This is a three byte ID so the holder of the ISO ID can freely use the five least significant bytes of the GUID.
FF:FF:FF:FF:FF:FF:FF:FA:YY:YY:YY:YY:XX:XX:XX:XX CiA (CAN in Automation) vendor ID. This is a 32-bit ID so the holder of the vendor ID can freely use the four least significant bytes of the GUID.
FF:FF:FF:FF:FF:FF:FF:F9:YY:YY:YY:XX:XX:XX:XX:XX ZigBee 802.15.4 OID. This is a 24-bit ID so the holder of the OID can freely use the five least significant bytes of the GUID.
FF:FF:FF:FF:FF:FF:FF:F8:YY:YY:YY:YY:YY:YY:XX:XX Bluetooth MAC. This is a 48-bit ID so the holder of the OID can freely use the two least significant bytes of the GUID.
FF:FF:FF:FF:FF:FF:FF:F7:YY:YY:YY:YY:YY:YY:YY:YY IEEE EUI-64. This is a 64-bit ID. The upper three bytes are purchased from IEEE by the company that releases the product. The lower five bytes are assigned by the device and must be unique.
FF:FF:FF:FF:FF:FF:FF:F6:00:YY:YY:YY:YY:YY:YY:YY Reserved for RAMTRON MRAM (and compatible), seven byte IDs.
FF:FF:FF:FF:FF:FF:FF:F6:01:YY:YY:YY:YY:YY:YY:YY- \ FF:FF:FF:FF:FF:FF:FF:F6:FF:YY:YY:YY:YY:YY:YY:YY Reserved for other future seven bit ID (memory devices) that may have ID, such as PRAM etc.
FF:FF:FF:FF:FF:FF:FF:F5:XX:XX:XX:XX:XX:XX:XX:XX Reserved for VSCP & Friends demo and example usage.
FF:FF:FF:FF:FF:FF:FF:F4:XX:XX:XX:XX:XX:XX:YY:YY Reserved for VSCP grouping where YY defines the group id. XX is not currently used.
FF:FF:FF:FF:FF:FF:FF:00:00:00:00:00:00:00:00:00- \ FF:FF:FF:FF:FF:FF:FF:F3:FF:FF:FF:FF:FF:FF:FF:FF Reserved
00:00:00:00:00:00:00:00:00:00:00:00:xx:xx:xx:xx Lab usage. You can use this range for your own development or for in-house local use. The GUID should never appear outside your local segments.
FE:YY:YY:YY:YY:YY:YY:YY:YY:YY:YY:YY:YY:YY:YY:YY Reserved for a generated 128 bit GUID where the most significant byte is replaced by FE Only use for Level II and on internal net. _URL_
FD:AA:BB:YY:YY:YY:YY:YY:YY:YY:YY:YY:YY:YY:YY:YY Reserved for MCU internal id's provided by some manufacturers. AA is manufacturer id. BB is circuit family. There is room for a 13-byte id. If the particular CPU have a an id that is shorter than put used bits to the right and set unused MSB bytes to zero. See information below.
MCU stored GUID's
As explained above GUID's with 0xFD in the most significant byte is reserved for MCU's with an on-ship stored id. If your MCU is not in the list below please let us know and we will add it (or you can add it yourself). Thus new MCU's will be added as they are needed by someone.
Manufacturer code
Code Description
0 Microchip
1 Atmel
2 ST
3 NXP
4 Freescale
5 Renesas
6 Gecko
7 Texas Instrument (+ Luminary Micro)
Family codes
Microchip
tbd
Atmel
Code Description
0 Xmega Family, use [DEVID2:1][LOTNUM5:4:3:2:1:0]:[WAFNUM]:[COORDX1:0][COORDY1:0] as bytes 13::0 of the GUID. DEVID0 not used because it is always a constant. DEVIDx is from "MCU Control registers", rest from "Production Signature Row".
1-255 t.b.d
Notes on other families:
 - No serial number: ATiny, AtMega, AT91SAM, SAM7 S/SE/X/XC, SAM9 XE n/M/N/CN/R/G/X, complete 8051 architecture
 - AT32 UC3 = 120 Bit
 - SAM


Régie des rentes du Québec
Administering a defined contribution plan
A defined contribution plan is generally administered by a pension committee, which is the first responder for the plan and must ensure that the plan is in conformity with the relevant laws.
The pension committee is responsible for the administration of the plan and the management of the pension fund. Furthermore, it has an important role to plan in providing information to plan members. It must act with prudence, diligence and competence, like any reasonable person.
Sometimes the administrator is not a pension committee
A plan with less than 26 members and beneficiaries can be administered by the employer. In that case, the employer has the same obligations and responsibilities as a pension committee.
Who can provide information about a plan?
Generally, the documentation given to plan members indicates the name and contact details of a contact person. Those details can also be obtained from the employer our by using the Régie's online consultation service for supervised pension plans.
How can someone become a pension committee member?
Any person who wants to be a committee member, whether or not he or she is a plan member, can express an interest in becoming a member to the persons who have the power to designate committee members (for example, the employer or the union). An interested person can also run as a candidate for election by the plan members and beneficiaries at the plan's annual meeting.
To find out more...
See the Régie's section for plan administrators.
 - Share
 - Top of the page


text:
In the village "Mozori kukhna", located in the Turakurgan district, Namangan region, books of the 10th and early 20th centuries were found.
As UzA reports, the name of this village in the books "Jome ul makomat" and "Mavlono Lutfulloh manokibi" is given as "Bozori kukhna".
It was in the house of the late Abdugafur-ota that a chest with rare books was discovered.
"Everyone here is well aware of the name of Abdugafur Khakimov. His ancestors were religious figures with progressive and creative ideas, looking to the future and determined to tirelessly call the people to light and knowledge," the message reads.


Tip of the week # 539
7 April 2018
Jump to a specific date in Google Calendar *
Do any of you use Google Calendar? Perhaps not for work, but privately? It's a free, intuitive online calendar developed by Google that you can easily access from your phone, tablet or computer. If you want, you can even share it with family or friends.
Like with Outlook there are various ways to display a specific date in Google Calendar. If you want to jump to a specific date there is a great shortcut.
Here's how:
 1. Open Google Calendar on your computer.
 2. Press G. (Easy to remember if you think of Go To.)
 3. Type the date you want to jump to. For example, 1/5. (No need to type the leading zeros or year.)
 4. Press ENTER or click GO.
To redisplay today's date click on the TODAY button or simply press G and type today.
Oh, and how about the following three shortcuts:
 1. D: show the daily view
 2. W: show the entire week
 3. M: show the month
Related tip:
Tip # 485: Jump to a specific date in your Outlook calendar ( tip_485.php )


Lab for Automated Reasoning and Analysis LARA
About phantm
What is phantm?
phantm is a tool written in Scala that can be used to detect potential programming errors inside PHP applications. It will both work for small isolated script as well as full-blown applications. phantm stands for "PHp ANalyzer for Type Mistakes".
What does it do?
phantm does multiple things: it first parses your php files, then try to resolve both constants and included files, from that point it will do name analysis, ensuring basic language restrictions. From that stage, it will perform data-flow analysis for every scopes in your applications. This data-flow analysis will be focused on checking whether the types of the values are used in a sound way.
How does it do that?
First, a stronger type system have to be used. For instance, not all type juggling should be allowed, since some of them are most of the time a manifestation of a type error. By default, phantm will be picky and report nearly all implicit type conversions. With those rules in place, it will look at the uses of your multiple flowing values and try to reconstruct and refine types. Type refinement is necessary to reduce the number of errors generated as a result of a false positive. For more technical details, check out _URL_
Why do types matter?
PHP type juggles for a reason: most people don't want to care about types. So why should they? To illustrate, let's take two small examples of programming errors that would be avoided with a strong type system:
if ($a & MY_FLAG === 0) {
 // ...
}
In fact, this code is understood by PHP as if ($a & (MYFLAG === 0)). Since & expects two integers, it would have rejected that code as the right hand side is a boolean.
if (strtolower(trim($var) == 'foo')) {
 // ...
}
In this case, we see that the parenthesis closing strtolower is mis-placed. A strong type system would have rejected that, complaining that strtolower expects a string but got a boolean.
Those are not made-up examples to illustrate the point. They are real bugs that phantm found in some PHP applications.

phantm/about.txt · Last modified: 2010/05/04 15:32 by ekneuss


Take the 2-minute tour ×
Some background: my coauthors and I are working on a problem which deals with the exponential growth rates of certain infinite products of matrices. One of the sub-problems which arises in this project is to prove that a particular function from the unit interval to the reals, which describes the growth rates of a family of related infinite matrix products, does not have any line segments in its graph. Now, the existence of a line segment would imply the existence of a pair of matrices some of whose characteristics coincide in a precise way. We have found an analytic proof that the graph cannot contain line segments, but it is long and displeasingly ad-hoc, and we would rather like to replace it with a shorter argument! Hence, we have found ourselves wondering whether there is an algebraic obstacle which would prevent these coincidences from occurring.
The question which arises from this research, then, is:
Do there exist matrices $A,B \in SL(2,\mathbb{Z})$ which satisfy the following constraints: the matrices $A$ and $B$ have only positive entries, do not commute, and satisfy $$\rho(AB)=\rho(A)\rho(B),$$ $$\mathbb{Q}\left(\rho(A)\right)=\mathbb{Q}\left(\rho(B)\right) \neq \mathbb{Q},$$ where $\rho$ denotes spectral radius?
The non-existence of such a pair of matrices would imply the non-existence of the line segments mentioned above.
One of my coauthors suspects that the spectral radius constraints on $A$ and $B$ cannot be met unless $A=C^k$, $B=C^\ell$ for some $C \in SL(2,\mathbb{Z})$ and $k,\ell \in \mathbb{N}$, which would contradict the hypothesis that $A$ and $B$ do not commute. Any solutions which end up being used in our paper will of course be gratefully acknowledged!
share|improve this question
Some thoughts. I believe the second condition requires that tr A = tr C^k and tr B = tr C^l for some C in SL(2, Z). If we then write A = C^k + X, B = C^l + Y where X, Y are traceless, the first condition is equivalent to the statement that X C^l + C^k Y + XY has trace zero. I think I can show this is impossible if X = 0. – Qiaochu Yuan Jun 8 '10 at 16:00
Ian Agol's answer has been incorporated into the article "On a Devil's staircase associated to the joint spectral radii of a family of pairs of matrices" which will be published in Journal of the European Mathematical Society in late 2012. – Ian Morris Dec 14 '11 at 11:06
1 Answer 1
up vote 9 down vote accepted
This is true: if one has two matrices $A, B \in SL_2 C$, and one knows the three traces $tr(A),tr(B),tr(AB)$, then this uniquely determines the matrices $A,B$ up to conjugacy if $A$ and $B$ generate a non-elementary discrete group (except in a few degenerate cases which won't occur for positive matrices). See for example Maclachlan-Reid. Since $tr(X) = \rho(X)+\rho(X)^{-1}$ for a positive matrix $X$, this implies that the three matrices have the same traces as two commuting matrices with the same traces, and therefore $A,B$ must be conjugate to a pair of commuting matrices. In fact, as your coauthor suspects, then they must be powers of the same matrix.
Addendum: I'll give some details of the argument, and I forgot a condition ($A$ and $B$ might generate a solvable group otherwise, although this is not possible for discrete groups).
Assume that $A, B \in SL_2 Z$. We want to show that $tr(A),tr(B),tr(AB)$ uniquely determine $A$ and $B$ up to conjugacy in $SL_2 C$.
Since $A$ is a positive matrix in $SL_2 Z$, we may conjugate it in $SL_2 R$ to be of the form $$ A=\begin{pmatrix} \lambda & 0 \\\ 0 & \lambda^{-1} \end{pmatrix} $$ where $\lambda >1$ (because $tr(A)>2$). We conjugate $B$ by the same matrix, and relabel so that $$ B=\begin{pmatrix} a & b \\\ c & d \end{pmatrix}. $$
If $A$ and $B$ commute, then we check that $b=c=0$, so in particular $ad=1$. Conversely, if $ad=1$, then we conclude that $bc=0$, and therefore $b=c=0$ since $A,B$ cannot generate a noncommutative solvable group since $SL_2 Z$ is discrete (see below).
From now on, let's assume that $A$ and $B$ don't commute.
The centralizer of $A$ in $SL_2 C$ consist of matrices of the form $$ \begin{pmatrix} z & 0 \\\ 0 & z^{-1} \end{pmatrix}. $$
We may conjugate $B$ by the centralizer of $A$ to be of the form $$ B=\begin{pmatrix} a & 1 \\\ ad-1 & d \end{pmatrix}. $$ Here I'm making use of the fact that $A,B$ are conjugate into $SL_2 Z$ to conclude that they don't generate a solvable group. This follows from the Margulis lemma (or an easy exercise). If $B$ had off-diagonal entries which were zero, then $\langle A, B\rangle$ would be solvable. The point is that then we may conjugate by elements of the centralizer of $A$ in $SL_2 C$ to arrange the upper right entry to be 1.
Thus, we have $$tr(A)=\lambda+\lambda^{-1}, tr(B)=a+d, tr(AB)=\lambda a +\lambda^{-1} d.$$
Now we compute $$a= \frac{\lambda tr(AB)-tr(B)}{\lambda^2-1}, d= \frac{\lambda^{-1} tr(AB)-tr(B)}{\lambda^{-2}-1}.$$
Thus, $tr(A), tr(B), tr(AB)$ canonically determine $A,B$ up to conjugacy (of course $\lambda$ is uniquely determined by $tr(A)$ given $\lambda >1$).
Now, we need to check that $\rho(AB) \neq \rho(A)\rho(B)$, where $\rho(A)=\lambda, \rho(B)=\mu$. If not, $tr(AB)=\lambda\mu +(\lambda\mu)^{-1}$ (again since $AB$ is positive). Plugging into the above equations, we conclude that $a=\mu, d=\mu^{-1}$, a contradiction.
I'm sure this argument can be simplified, but I wanted to carry through the sketch of the argument I gave the first go around.
Also, one may see that any subgroup of commuting matrices in $SL_2 Z$ is either powers of a parabolic element, a hyperbolic element, or a finite-order element.
share|improve this answer
Thanks! Could you provide a reference for the general result which you use here (or a name or keyword, so I can look it up myself)? – Ian Morris Jun 8 '10 at 17:00
I think the statement is false in SL_2(C); in the setup in my comment above one can take k = l = 1, C = [[2 3][3 5]], X = 0, and Y = [[b+c b][c -b-c]] where b^2+3bc+c^2 = 0. – Qiaochu Yuan Jun 8 '10 at 17:42
_USER_: Did you check that your pairs of matrices are nonconjugate? Remember, there is a 1-parameter family of matrices commuting with C. I think you've found a parametrization of the matrices obtained by conjugating B by this family (although I didn't check your formulae). – Ian Agol Jun 9 '10 at 23:25
Qiaochu's examples don't commute. Also, he might as well take the square root of C, [[1,1][1,2]]. – Ben Wieland Jun 10 '10 at 0:33
Agol: thank you for this excellent and very useful extended answer! – Ian Morris Jun 11 '10 at 12:33
Your Answer


Schema generator
To generate schema from your entity metadata, you can use SchemaGenerator helper. You will need to create simple script where you initialize MikroORM like this:
./create-schema.ts
import { MikroORM, SchemaGenerator } from 'mikro-orm';
(async () => {
 const orm = await MikroORM.init({
 entities: [Author, Book, ...],
 dbName: 'your-db-name',
 // ...
 });
 const generator = new SchemaGenerator(orm.em.getDriver(), orm.getMetadata());
 const dump = generator.generate();
 console.log(dump);
 await orm.close(true);
})();
Then run this script via ts-node (or compile it to plain JS and use node):
$ ts-node create-schema


The Bellwin Scheme for Emergency Financial Assistance to Local Authorities
1. What is the Bellwin Scheme?
The Bellwin Scheme operates under Section 155(2) of the Local Government and Housing Act 1989 and allows Scottish Ministers to make additional revenue support to local authorities to assist with the immediate, and unforeseen costs in dealing with the aftermath of emergency incidents.
It is a discretionary scheme, which exists to give special financial assistance to local authorities who would otherwise be faced with an undue financial burden as a result of providing relief and carrying out immediate work due to large-scale emergencies. Local authorities are expected to include a small amount within their annual budget to deal with unforeseen emergencies. There is no automatic entitlement to assistance. flooding image
2. How does the Bellwin Scheme operate?
When it becomes obvious that there is an emergency which is creating immediate demands on local government, the Scottish Executive Ministers will decide whether the Scheme should be triggered. Once the Scheme has been triggered, affected authorities are invited to submit claims. The Scheme may be activated to meet the additional expense for authorities in providing immediate relief, in safeguarding life and property in affected communities and in keeping key communications open in the immediate aftermath of an emergency. Its purpose is not to put right all the ill effects of an incident. Applications for assistance must demonstrate undue financial burdens on authorities.
3. What costs are eligible for assistance?
The Scheme addresses revenue costs only and eligible costs are subject to a threshold which is set individually for each local authority and takes account of an assumed amount contained within each local authority's budget. Payment of a grant is made in full in respect of total eligible expenditure, after deduction of the threshold.
Costs which are considered to be insurable are not considered eligible under the Scheme but an element for insurance excess is considered eligible.
4. When was the Bellwin scheme last reviewed?
A review of the Bellwin Scheme was undertaken in 2005. A summary of the responses that were received and the Executive response to the consultation exercise can be found by following the links below.
Scottish Executive response to Bellwin consultation exercise
Summary of Bellwin consultation responses
You can also review the press release announcing the proposed changes to the Bellwin Scheme
5. Where can I find the updated documents?
The link to the full revised guidance note which contains the relevant updated information for making a claim and the claim forms, and the current Bellwin Thresholds.


text:
Both organisation and Branch Secretary responsible for branch's financial reports
Registered Organisations Commissioner v Australian Nursing Midwifery Federation FCA 1735 External link (opens in new window)
Registered Organisations Commissioner v Australian Nursing Midwifery Federation (No 2) FCA 2004 External link (opens in new window)
What were the issues?
An organisation was found to have breached the Fair Work (Registered Organisations) Act 2009 (the RO Act) when one of its branches failed to prepare, circulate and present its financial reports.
The branch's Secretary was also found to have breached his duties of care and diligence as an officer because of his failures to ensure the branch prepared financial reports in a timely way.
The Western Australian Branch of the Australian Nursing Midwifery Federation (ANMF) failed to prepare, circulate and present financial reports to its members, in accordance with the requirements of the RO Act, for the financial years ending 30 June 2010, 2011 and 2012.
The Branch Secretary had a duty under the organisation's rules to ensure the timely preparation, circulation and lodgement of the reports. He failed to meet his obligations under the rules and because of that failed to exercise his powers and discharge his duties with the care and diligence that a reasonable person in his position would exercise.
What can organisations learn from this?
Organisations must take the financial reporting obligations of their branches seriously.
If a branch fails to meet its obligations, the organisation is responsible. Also officers can be held personally responsible if they fail to meet their obligations under the organisation's rules.
The Court commended the efforts of the organisation in its attempts to ensure the branch lodged its reports with the regulator, as well as putting in place organisational arrangements to ensure future compliance by all branches. This resulted in a reduced penalty.
What did the judge say?
In his judgment on 13 November 2018, Justice Barker said at that the:
…failure to comply with the reporting obligations under the Act are… of considerable significance to the effective operation of the RO Act. Persons who exercise effective control of organisations in the manner that Mr Olson did, at material times, should not be encouraged to think that the reporting obligations can be treated lightly, such that they can easily expect to be excused for the contravention of their obligations.
Justice Barker emphasised at that organisations must understand that:
… the obligations imposed on them under the RO Act must be taken seriously.
What was the outcome and the penalty?
The Court found that because the Branch Secretary did not lodge financial reports on time between July 2010 and July 2013, he had not exercised the degree of care and diligence that a reasonable person would exercise (a contravention of section 285(1) of the RO Act.
Before the hearing the ANMF admitted to nine contraventions of the sections of the RO Act that require financial reports to be prepared, presented to members and presented to a meeting (sections 253, 265(5) and 266). The Court took into consideration:
- the ANMF's full cooperation and early admissions which saved significant public resources, and
- that the ANMF had established new organisational arrangements to ensure future compliance with the RO Act.
On 14 December 2018, Justice Barker ordered that:
- The Branch Secretary pay a penalty of $6,630 for his contravention of section 285(1) of the RO Act; and
- the ANMF pay a penalty totalling $29,250 for its contraventions of sections 253, 265(5) and 266 of the RO Act.
The total penalty was $35,880.
WAD 470 of 2015
Date of final orders
14 December 2018


text:
Pupils win the debate on Europe
Ten school teams of pupils from years 5 and 6 in primary and middle schools in Bedford took part in the inaugural debates of The Bedford Junior Debate Academy.
Despite strong spirited and imaginative opposition from Cauldwell Primary School, the team from Livingstone Primary succeeded in persuading the audience that Britain should remain a full member of the European Union.
Other topics debated included proposals that we should end financial inequality by encouraging the rich to share their wealth with the poor (won), that there should be greater restrictions on the use of social media for children under 16 (lost), and that the voting age should be lowered to 12 years of age (won). A further motion that teachers should be replaced by computers was opposed vigorously by the team from Putnoe Primary School, as a result of which the motion was lost - to the great relief of the teachers present!
The chairman's awards for the best proposition team went to Queens Park Academy, and for the best opposition team to Cauldwell Primary.
The organiser of the event, Dr Tony Wood of the English-Speaking Union, praised the young debaters.
He said: "This is the first time a formal inter-school debating competition for children this young has been held in Bedfordshire. They were magnificent."


node package manager
unique-id-mixin
Generate a unique identifier for React components, useful when assinging htmlFor and id for label + input combinations
Unique Id Mixin by @andrewray
This ReactJS mixin adds component methods letting you generate unique IDs for your current component. This is useful when you need to assign for="" attributes for labels and their respective inputs.
Install
npm install unique-id-mixin --save-dev
Example Usage
var UniqeIdMixin = require('unique-id-mixin');
var Component = React.createClass({
 mixins: [ UniqeIdMixin ],
 render: function() {
 Label
 <input id={ this.getNextUid( 'unique-string' ) } type="text" />
 }
});
The above can be a bit verbose to type, and has the problem that you need to duplicate the string between each HTML element. There is also a convenience method that will generate UIDs every other call. The first two calls will return the same UID, then the next two calls will return a new UID, etc.

Label
<input id={ this.getNextHtmlFor() } type="text" />

Label
<input id={ this.getNextHtmlFor() } type="text" />
API
this.getNextUid( identifier:String )
Returns a UID generated using the identifier. If identifier has already been passed, the cached UID will be returned.
this.getNextHtmlFor()
Returns a UID which changes every other call.


Skip navigation
Nuclear Safeguards Education Portal

Pathways Analysis
Pathways analysis is the evaluation technique used to model the security system. It involves breaking down each step of the adversary's pathway from offsite until reaching the asset being protected. Each step corresponds to the adversary overcoming a security element (either a detection or delay element) and the corresponding detection probability or delay time.
Along each pathway, the metric used to determine the effectiveness of the physical protection system is the probability of interruption (PI). This is the probability that the security system successfully detects the adversary attacking along the given pathway so that the response force is able to successfully engage the adversary and prevent completion of the intended task. Once the adversary is interrupted, the probability of neutralization is used to determine the probability that the adversary is stopped. These two values are then used to determine the system effectiveness of the physical protection system (PE) for that pathway. Substituting these values into the conditional risk equation yield:
Rc = ( 1 - PE ) * C = ( 1 - PI PN ) * C
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Scroll to explore Drones and Honeycombs
The Netherlands is famous for its professional design practice, both smalland large-scale. It is also known for its humanitarian missions and investments in development projects around the world. There used to be a clear distinction between war zones and the peaceful civilian world. That distinction seems to have dissolved: war has become part of the public space. Through this project, Het Nieuwe Instituut seeks to link subjects such as innovation and conflict to contemporary issues in design. The work focuses on the extent to which the military apparatus affects society and how it engages with architecture and urban planning.
The project is divided into three sub-research themes:
1. Drones: machines, surveillance and emerging security regimes
2. Compounds: architecture of enclosure
Background tot the project Drones and Honeycombs
Drones and Honeycombs is based on a research project by Malkit Shoshan, fellow of Het Nieuwe Instituut.


Aller au contenu
Updating the application
Before you start
Jasypt encryption settings
Since GeoNetwork 4.0.4, passwords stored in the database for the mail server, harvesters, etc. are encrypted with Jasypt.
By default, a random encryption password is generated when GeoNetwork is started, if it is not already defined, and it is stored in the data directory data/config/encryptor/encryptor.properties.
If you are using the application data direcotry, the encryption password is stored in the file /geonetwork/WEB-INF/data/config/encryptor/encryptor.properties.
Warning
This encryptor.propertie file must be copied to the new installation when upgrading the application; otherwise, it will not be possible to decrypt the existing passwords stored in the database.
If you have set the location of the data directory outside of the application, the file will be stored in this external location at data/config/encryptor/encryptor.properties
Read more at Customizing the data directory.
Upgrade from GeoNetwork 3.X to GeoNetwork 4.2
Upgrading from GeoNetwork 3.X to GeoNetwork 4.2 is a major upgrade.
We do not recommend updating a production system. Instead treat this as a migration, setting up a new GeoNetwork 4.2 installation and transfer data and settings.
Before you start:
 - Backup your database
 - Backup your data directory
GeoNetwork for Migration:
 1. GeoNetwork 4.2 requires a Java 8 environment (JRE) to be installed on your system.
 Later versions of Java will not work at present. This must be done prior to installation.
 2. GeoNetwork 4.2 changes the search engine to Elasticsearch.
 For installation instructions see Installing search platform.
 3. Perform a new install of GeoNetwork 4.2, according to installation approach used.
 4. Configure GeoNetwork use to your database and data directory.
 5. Start services:
 - Database
 - Elasticsearch
 - Application server for GeoNetwork
 6. GeoNetwork 4.2 encrypts stored passwords using Jasypt as described at the top of this page.
 During startup a random encryption password will be generated and stored in data directory data/config/encryptor/encryptor.properties.
 7. During startup the database schema will be updated to match the table structure required for GeoNetwork 4.2.
 8. GeoNetwork will create indices automatically when connecting to Elasticsearch.
Guidance:
The above links provided recommendations and mitigation measures where appropriate.
 - For information on new features and functionality:
 - Changelog 4.2
 - [Changelog 4.0](../../overview/change-log/history/index.md#40]


Reflection formula
From Wikipedia, the free encyclopedia
 (Redirected from Euler's reflection formula)
Jump to: navigation, search
In mathematics, a reflection formula or reflection relation for a function f is a relationship between f(a − x) and f(x). It is a special case of a functional equation, and it is very common in the literature to use the term "functional equation" when "reflection formula" is meant.
Reflection formulas are useful for numerical computation of special functions. In effect, an approximation that has greater accuracy or only converges on one side of a reflection point (typically in the positive half of the complex plane) can be employed for all arguments.
Known formulae[edit]
The even and odd functions satisfy simple reflection relations around a = 0. For all even functions,
f(-x) = f(x),\,\!
and for all odd functions,
f(-x) = -f(x).\,\!
A famous relationship is Euler's reflection formula
\Gamma(z)\Gamma(1-z) = \frac{\pi}{\sin{(\pi z)}}\!
for the Gamma function Γ(z), due to Leonhard Euler.
There is also a reflection formula for the general n-th order polygamma function ψ(n)(z),
\psi^{(n)} (1-z)+(-1)^{n+1}\psi^{(n)} (z) = (-1)^n \pi \frac{d^n}{d z^n} \cot{(\pi z)} \,
which springs trivally from the fact that the polygamma functions are defined as the derivations of the \ln \Gamma and thus its reflection formula is inherited to them.
The Riemann zeta function ζ(z) satisfies
\frac{\zeta(1-z)}{\zeta(z)} = \frac{2\, \Gamma(z)}{(2\pi)^{z}} \cos\left(\frac{\pi z}{2}\right),\,\!
and the Riemann Xi function ξ(z) satisfies
\xi(z) = \xi(1-z). \,\!
References[edit]


text:
The "historic" simulation line represents the long-term climate response a river might have according to the hydrologic model. If the hydrologic forecast is for near-normal conditions, the "conditional" simulation curve will be similar to the historic simulation curve. If the streamflow forecast is for wetter than normal conditions, the conditional simulation curve will be above the historic curve. Likewise, if the streamflow forecast is for drier than normal conditions, the conditional simulation curve will be below the historic curve.
The slope of the simulation curve indicate the amount of uncertainty associated with a forecast. The flatter the line, the more confident the forecast. The steeper the line, the less confident the forecast.
NOAA's National Weather Service produces such plots as part of the Advanced Hydrologic Prediction Service.


text:
Skip to comments.Discoveries might reveal origins of Southeastern N.C.'s first inhabitants
Posted on 05/10/2010 4:19:52 AM PDT by Palter
WRIGHTSVILLE BEACH | A local captain and his crew have discovered a unique rock and nearby artifacts that might help reveal how the first people came to Southeastern North Carolina thousands of years ago.
Geologists said the rock, called black chert or novaculite, was previously thought to only be available in vast quantities in the mountains of Arkansas. Zulu Discovery, a local underwater exploration company, found a very dense version of the rock dozens of feet below the surface of the Atlantic Ocean off Wrightsville Beach. Chert was used by the first people in North America, called Paleo-Indians, to create the stone tools they needed to survive.
The discovery of black chert off local shores could rewrite America's prehistory by supporting a theory that Paleo-Indians might have come to the continent via a coastal route rather than by land, said Phil Garwood, a geology instructor at Cape Fear Community College who first identified the local rock as chert. The exact route Paleo-Indians followed will always remain a mystery, but clues have come in the form of the tools they left behind.
This is a piece of the puzzle, Garwood said.
In collaboration with CFCC, Zulu Discovery founders Capt. Jim Batey and his son Rusty Batey hope to find grants and other sources of funding to continue their research and exploration of the areas where they've found the rock and artifacts. The Bateys don't want to reveal the exact depths or locations of their finds, fearing the disruption by other divers of their efforts to study the material.
Continuing their research, Zulu Discovery and CFCC met with state geologists and an underwater archaeologist recently to present their findings and get some advice on what to do next.
Kenneth Taylor, chief of the N.C. Geological Survey, was one of those geologists.
One of the things about it, when you look at samples of chert very, very hard, very, clear chert, that has to come from Arkansas. There's not an outcrop of this stuff in North Carolina, Taylor said, explaining the prevailing theory. Now there is. If there are archaeological artifacts that prove its first peoples' or native peoples'... This is outstanding. It's outstanding. It then says that they had a ready source nearby.
The rocks weren't underwater thousands of years ago.
It's offshore today, but it wouldn't have been covered by the ocean at that time because the ocean didn't come that far inland, Taylor said.
Not just a piece of cement
The North Carolina black chert, dubbed SeaViculite by Zulu Discovery, was found by accident.
Zulu Discovery diver Kevin Rooney picked up the unusual rock last summer as he searched underwater ledges for shark's teeth and fossils.
He brought it up just to see what it was, just to bring it to the surface and analyze it, Rusty Batey said.
At that time, no one suspected it was anything special.
We just thought it was a big square piece of cement, Rusty Batey said.
It wasn't until several months later, when Jim Batey got tired of seeing the rock in his yard, that they got their first clue to the rock's significance. Jim threw it to Rooney, telling him to get rid of the cement-colored stuff, when a piece of it broke off, revealing a lustrous black interior.
I knew it was something that needed to be looked at. It was so unusual, said Jim Batey, who added that he'd never come across anything like it in his 45 years of deep-sea diving.
Jim gave it to Tim Shaw, a marine technology instructor at CFCC, who showed it to Garwood.
If there's one rock in the world I know, it's chert, said Garwood, who studied chert in Australia. Chert is a sedimentary rock, believed to have formed when the shells of ancient, microscopic sea creatures fused together, Garwood said.
People might have been picking up those rocks for years and they just didn't know what it was, Taylor said. It took showing the find to someone who knows rocks, like Garwood, to make the significant connection, Taylor said.
Garwood said the SeaViculite is being analyzed by a laboratory at the College of Charleston in Charleston, S.C., and so far the lab has found an 85 percent probability that the SeaViculite is the same material used to make tools found in Southeastern North Carolina.
The artifacts Zulu Discovery has found near the underwater chert sites and identified by Garwood include an ornament called a gorgot, a scraper used to clean hides, a knife and a stone used to start fires.
Rusty Batey said he's mailed at least 30 samples of the SeaViculite to flint knappers people who make stone tools and others for examination.
Jim Batey said the crew plans to take an archaeologist from the state's Underwater Archaeology Branch to one of their chert sites. In addition to showing him the sites, they want the archaeologist, Nathan Henry, to examine a possible artifact that looks like it might be a pot of some kind. A video shot underwater by Zulu Discovery's Video Ray Pro III remote operated vehicle shows a half moon shape wedged under a ledge. The Zulu Discovery diver didn't want to try to pull out the potential artifact, fearing it's destruction.
The question of whether parts of the chert locations need to be preserved as culturally significant sites is another reason Zulu Discovery is working with the state and college on the project, alternately called Operation Chert and Project SeaViculite.
This may be a very significant site archaeologically if indeed it turns out there is cultural material associated with the rock, said Richard Lawrence, director of the state's Underwater Archaeology Branch.
We don't want to disturb a site if it's an Indian site, Jim Batey said.
The company has not yet determined whether mining the chert, which would require permission from the federal government, would be a profitable venture. In addition to its historical value, chert has commercial value, including its ability to sharpen knives, surgical instruments and wood carving tools.
We don't know where it's going to go right now, Jim Batey said.
The company plans to continue exploring the SeaViculite sites they've already found and look for more.
You could make your projectile points for the next whole year by wintering over at that location, Taylor said, of the large pockets of chert already found by Zulu Discovery. That's incredibly fascinating.
Zulu Discovery owner Jim Batey holds a piece of North Carolina black chert that his crew found off the North Carolina coast.
'supporting a theory that Paleo-Indians might have come to the continent via a coastal route rather than by land'
And this tells us how people came to North Carolina?
What am I missing?
"What else floats on water?"
Wasn't Mayberry in NC?
Paleo-Indians butchering a bison at the end of the Ice Age. Pembina State Museum exhibit
· Discover · Nat Geographic · Texas AM Anthro News · Yahoo Anthro & Archaeo · Google ·
· The Archaeology Channel · Excerpt, or Link only? · cgk's list of ping lists ·
These guys might be about to make fools of themselves. Chert was used for ballast. It was also used to pave roads. For all they know, it could have washed out to sea in a nor'easter back during the depression, or was dumped by a ship during the Civil War.
LOL! Your question shows an awareness of NC cue but falls short.
Eastern. And you say Eastern or Western, not East or West. :]
The first BBQ came to the US from Haiti via North Carolina. Barbeque is actually a Carib Indian word for roasted human arm.
And now, you know the rest of the story.
Or, it was dropped overboard by Indians say, 600 years ago while they were out fishing, geeze.
Well, now, I beg to differ.
The pit cooking method was taught to the very earliest English colonists, there are descriptions of pit cooking methods taught by the Croatan and the Powhatan. The sauce is a survival of Elizabethan "catsup" which was a vinegary sauce with herbs and spices. It's the first authentically American food, being a fusion of English and native. It really should be our Thanksgiving dinner, imho. Far more authentic than that sanitized and romanticized tale of our putative Pilgrim Fathers, those Johnny-Come-Lately communards, lol.
I've been a history buff with a nack for odd or forgotten history for years, and one of those odd bits is the origin of southeastern pit-cooked barbecue. I've never in my life heard this NC-by-way-of-Haiti cannibal cuisine tale before in my life, and I've actually researched it for years.
If you're pulling our legs, you're doing a pretty good job of it. If you're not, please source, starting with the etymology of "barbeque" from Haitian Creole. Bar-beek, like Martinique? I'm just baffled.
The Carribean connection to NC was Barbados and Cuba, not Hispaniola. Pit cooking was widespread before Haitians ever conjured their voodoo demon and slaughtered their overlords in their sleep back in the late 1700's.
For once, I

source: HuggingFaceFW/fineweb-edu


Top Vacuum Technology For Space Simulators
Top Vacuum Technology For Space Simulators
January 18, 2021
by Katy Manning
Each year has brought along with it a long list of space-related achievements including new satellites orbiting the planet and different tech products brought to market. This includes specific projects that have been managed by some of the biggest names in the industry such as SPACE-X. The goal of these companies is to maximize new-age tech and bring the world to a new level.
Keeping this in mind, it has become important to analyze vacuum technology for space simulators.
Here is a look at what this tech is all about and how it works.
What is Vacuum Pressure?
In general, space tends to work with air pressure that begins at 100km above sea level. The air pressure that is seen in this space is cited as 0.27 pa. Certain satellites are set at a low earth orbit that can still handle pressure related to gas. Due to this, the satellites tend to lose their height with each passing day.
Vacuum pressure is focused on atmosphere-related pressure that is around an object. In this case, it would have to do with space simulators.
The pressure that is calculated tends to be measured within PSIV.
Since companies don't want to go headfirst into launching random satellites into space, they take the time to test everything on Earth. To do this, they have to mimic the conditions the satellite is going to be dealing with regularly. This is why vacuum technology plays a role in what is being done.
The goal is to make sure everything is tested down to the last detail before launching the satellite.
Space Simulations
The vacuum chamber is set up when it is time to go through a series of space simulations. This means the vacuum range is set up at 10-07 - 10-06. The test tends to be done in this range while fluctuating through different temperature points. The idea behind changing the temperature is to focus on when the sun is going to be closer and when it is not.
There are times when certain vacuum chambers are going to be specifically designed to simulate solar wind too. This is done to handle that kind of pressure without breaking down.
The satellite goes through rigorous testing within this pressure to make sure it continues to work the way it is supposed to. In the end, it is not just about surviving, but also making sure the performance of the satellite doesn't diminish.
Vacuum Testing Requirements
To set up the vacuum chamber, the goal is to take out all of the natural air and begin pumping gases into the chamber with the objects around. This tends to interact with water vapor to create a composition that is tweaked to mimic specific pressure.
This is a key detail to think about when it comes to prepping the entire system.
There are specific blower systems that are used to do this and maintain the pressure. This is the only way to ensure the pressure hits a specific point and then remains there as well. This is key when it comes to managing oil-free vacuum systems that are going to keep the satellite running the way it is supposed to under pressure.
It's important to note, these blower systems can be played around with the handle different pressure points. There are times "toughing" is done with the use of dry screw pumps to create additional pressure.
Thermal Shroud
Let's assume the pressure inside the vacuum chamber is perfect and it is time to start testing the satellites. This is great, but the conditions in space are not always going to be constant. This is why scientists take the time to go through each detail including variable temperatures.
A thermal shroud can assist with this and can make sure heat radiation is controlled down to the last detail.
It is also possible to bring the temperature down with the inclusion of specific cold plates. This can be done with the use of larger chambers and liquid nitrogen.
Space simulators are all about testing objects, so making small tweaks such as this can go a long way. This is also a good way to make sure the leaks don't become uncontrollable.
Dealing with a high-grade vacuum is all about maximizing performance and testing the right way. This is where a thermal shroud can help.
Final Thoughts
Space simulators are a must when it comes to seeing what can and can't be done with specific satellites. Having all of this information not only helps right now but also makes it easier to set up advancements that push the space industry forward without taking on major losses.
This equipment is powerful, easy to set up, and offers long-term value that is a must when testing. The tech continues to get better with time and continues to add value to upcoming space projects.
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Water Bouncer vs Water Trampoline? Know the Difference Before Buying
There's a hot new trend among kids, and it's NOT a gadget, it's not powered by the Internet, and it doesn't even have a screen. What?!
It's called a water bouncer. So far, mostly passionate gymnasts and adventure-loving enthusiasts who live near a body of water know about it. But it's quickly catching on.
So, What Is a Water Bouncer?
A water bouncer is an inflatable platform that kids (and adults) use for fun and light exercise. It's first inflated and set up on land, and then moved onto the water.
The main parts of a water bouncer are an inflatable outer tube and a jump mat. Since it's so bouncy, it can be used for some light gymnastic exercises. Of course, kids often just use it to bounce for fun.
Starzcom's water bouncer comes with an electric pump which can inflate it in only four minutes. This makes the bouncer a cool party gadget for a day out on the lake. It's light, compact when deflated, quickly inflated, and easy to carry around.
It's a relatively new trend, so the summer of 2020 will hopefully be remembered NOT as a COVID-19 summer, but as the summer the water bouncers took off, covering lakes and bays, providing kids with hours of healthy fun.
How Is a Water Bouncer Different from a Water Trampoline?
Though people sometimes use these two terms interchangeably, there are some clear differences between water bouncers and trampolines.
The main technical difference is that water trampolines use springs to connect the jump mat with the outer tube, while bouncers use webbing. These springs are metal, and many trampolines also have a steel frame strapped to the tube, making the construction a little heavier, but also making trampolines a little bouncier than water bouncers.
Trampolines are also a bit more difficult to assemble, because of the frame and metal parts – it takes more time to set them up than bouncers. That's why their owners often anchor them for the whole summer. Otherwise, it would be a lot of hassle to go through the process multiple times during the season.
Water bouncers are lighter, without any metal parts which makes them ideal for younger children, and they are usually smaller than trampolines. Less costly as well.
Are Water Bouncers Safe?
As we mentioned, water bouncers don't have any metal springs or frames on the outer tube, so they are safer than trampolines. They are completely suitable for younger kids.
They are made of a sturdy PVC material, and can withstand all the jumping, stomping and savagery young kids can summon on their brightest vacation day.
Bouncers also have an anti-skid jump mat surface which decreases the chance of ugly falls and injuries.
It's important to understand that water bouncers are not the same thing as air tracks. If your kids are interested in practicing some riskier gymnast moves, flips, somersaults, etc., it's probably wiser to get an air track. It can be used both on land and water.
Water bouncers are safe as long as they are used properly – for recreational bouncing, light gymnastics, and lazy lounging in the sun.
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Alone Together, the Social Life of Benches illuminates the thoughts and memories of frequent users of two public spaces in London: General Gordon Square, Woolwich and St Helier Open Space, Sutton. Revolving around the micro-space of the humble bench, the emotional and experiential capacity of film is used to highlight themes such as the feeling of being in a space, the rhythm and flow of visitors to a place, and the importance of design for everyday street furniture.
The film acts like a stranger who joins you on a bench to 'watch the world go by', and break the ice by starting a conversation with their fellow bench user.
Alone Together was made as part of collaborative research 'The Bench Project', which explores how individuals and groups use public space. Funded by the Arts and Humanities Research Council Connected Communities programme 2015.


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The Plasma Cloud console allows you to manage wireless mesh both manually and automatically.
Generally, the use of WiFi AI is recommended for automated wireless mesh management. It will perform regular networks scans (based on your maintenance window) and dynamically optimize your settings to better suit your topology. For instance, wireless mesh may be disabled to reduce the WiFi overhead and increase performance when not needed. On the other hand, it will be activated on those devices that can't successfully connect to the Internet via cable.
However, should you wish to manually enable and disable wireless mesh, you can do so either on a per-network or per-Access Point basis. First, you need to:
- Log into the Plasma Cloud console;
- Select the Organisation and Network of interest from the top right menu;
Next, to manually manage wireless mesh for your network, you need to:
- Navigate to Settings > Network in the main menu on the left;
- Ensure the WiFi AI toggle is deactivated in the WiFi settings section;
- Enable or disable the Wireless mesh toggle in the WiFi settings section as needed.
Or, to manually manage wireless mesh for a specific Access Point, you need to:
- Navigate to Access Points and select the device of interest from the table;
- Scroll down to the Wireless mesh section and click on the drop-down menu to change the status of wireless mesh for this particular device.


Learning Tools
Myth/Fact Sheets
The Holocaust Deniers Say:
What we know about the destruction of teeth by fire
 - After 30 minutes in fires with temperatures of 752 degrees Fahrenheit (400 degrees Celsius) the front teeth are totally destroyed. The molars (the grinding teeth in the back of the mouth) start to crack.
 - At between 45 and 70 minutes in fires with temperatures between 1832 degrees Fahrenheit (1000 degrees Celsius) and 2012 degrees Fahrenheit (1100 degrees Celsius), all the teeth are totally carbonized. 3
 - In a civilian crematorium furnace, a temperature between 1400 to 2100 degrees Fahrenheit (760 to 1150 degrees Celsius) is generated to ensure the disintegration of the remains. Even then teeth and some bones are still intact and are crushed in a machine. 4
Have teeth been found in the camps?
 - Polish judicial authorities performed excavations on the site in October 1945. They dug nine holes or trenches in the area believed to the extermination part of the camp. They found "... a large number of human bones... such as skulls, parts of skulls, vertebrae, ribs, collarbones, shoulder blades, arm bones, lower legs, wrists, fingers, pelvic bones, thigh bones, lower legs and foot bones. Some of the bones mentioned are either partly burnt or had not been burnt at all... From the size of the various bones one can conclude that they belong to persons of different age groups, from two-year-olds up to very old people, as borne out by toothless jaws and numerous dentures. Among the jawbones found there was one partially burnt specimen containing milk teeth as well as incipient permanent teeth, which indicates that it belongs to a person 7 to 8 years of age." 5
 - Andrezj Kola, together with a team of professionals, drilled 2,000 core samples throughout the area of the camp in Belzec in 1997 and 1998. He found 33 mass graves filled with whole bodies, parts of bodies (some burned, others not) and huge areas of human ash, bone remnants, and wood ash. It is reasonable to believe that some of the ash and bone remnants are probably the remains of teeth although Kola did not identify them separately. 6
 - Most of the teeth would have been destroyed in the fires and the rest would have been pretty well crushed. Their presence today is indeterminable from the rest of the human ashes in the graves.
 - The few whole teeth that would have gotten through the burning and pulverization process are scattered across or buried under acres of land. Finding them in the thousands of tons of human and wood ash would be purely accidental.
 - The research of forensic dentists-whose business it is to know precisely what happens to teeth in fire conditions-shows that exactly the opposite of the Holocaust deniers' claims are true. In fires with temperatures high enough to cremate bodies, most of the teeth are destroyed. Any remaining teeth that did not burn are weakened and so are more easily ground to dust.
 - The Holocaust deniers did not do their research-or if they did they ignored it-preferring instead to trumpet the alleged damage to the "Holohoax" that the spectacular image of 55 million teeth missing from the grounds and mass graves of the Operation Reinhard camps provides.
 - The intact teeth of 1.8 million murdered Jews in the three camps of Operation Reinhard cannot be found because they are part of the deep layers of human ash in the mass graves or are scattered or were dumped into local rivers and ponds.
1. See NAFCASH website at.
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Conceptual Model At Dixie Valley Geothermal Area (Bell, Et Al., 1980)
From Open Energy Information
Exploration Activity: Conceptual Model At Dixie Valley Geothermal Area (Bell, Et Al., 1980)
|Exploration Activity Details|
|Location||Dixie Valley Geothermal Area|
|Exploration Technique||Conceptual Model|
|Activity Date||1980 - 1980|
Conceptual models are the basis of any exploration or development activities. Many Conceptual models of Dixie Valley have been made and they have been evolving and becoming more complex over the years.
This was a very simplistic model based primarily on MT data. The model was inaccurate and did not show fluid flow paths. The model tried to interpret the subsurface down to 20 km.
- Elaine J. Bell, Lawrence T. Larson, Russell W. Juncal (1980) Geothermal Reservoir Assessment Case Study, Northern Basin and Range Province, Northern Dixie Valley, Nevada
- Dick Benoit (1999) Conceptual Models of the Dixie Valley, Nevada Geothermal Field


The Balkan Mountains (Kom-Emine)
Section 1 of the Trans-European Alpine Route
This section of the TEAR simply follows Bulgaria's longest and oldest trail, the Kom-Emine, for it's entire length across the Balkan Mountains. The eastern terminus of the trail, along with the entire TEAR, is Cape Emine, where the Balkan Mountains rise out of the Black Sea. The Kom-Emine winds its way towards Kom Peak (near the Serbian border) along a network of dirt roads and walking paths (official estimates are 70% forest/farm tracks, 20% single track, 5% paved).
The Balkan Mountains, or Stara Planina, run east-west across central Bulgaria before curving north and forming the border with Serbia at their western end. They have played an enormous role in the history of Bulgaria and even provide the basis for the name of the entire Balkan Peninsula.
The highlights of the Kom-Emine are the high ridge walks along the western and central sections of the Balkan Mountains (including the Central Balkan National Park), although this also presents the greatest challenge for TEAR hikers due to the lingering snow and unsettled weather in the early spring season. Thankfully a well established system of mountain huts allow for options for weary walkers to dry off and warm up.
The 'nuts and bolts' of the section are provided in the map above, which can be exported for use in offline GPS apps. Information is divided into subfolders for easier viewing and additional details/context are given below.
Main Route
Conceptually, navigation for this section is fairly simple since we're sticking to a single trail the entire way. The Kom-Emine is generally well marked with blazes of red and white stripes, although sometimes an important intersection will have nothing while a clear forest trail could be blazed on every other tree.
There is an official guidebook available (be sure to order the english version) which contains additional historical and cultural details, daily trail descriptions, hut information, and overview maps (not detailed enough for navigation). It's important to note that the trail is traditionally hiked eastbound, from Kom Peak to Cape Emine (this is the way the guidebook is written), while you'll be hiking in the opposite direction.
Alternate Routes
There are several official alternate routes along the Kom-Emine which allow you to bypass the main (exposed) ridges during bad weather. You'll likely encounter snow anywhere above 2000m in April so these trails become very useful options. Unfortunately there is no alternate around the highest point of the Balkan Mountains, Botev Peak (2386m), so you'll have to brave the elements.
The Kom-Emine doesn't pass through many towns due to its path along the main ridges of the mountains. This means you'll have to drop down off the trail to the plains below if you want to restock at a market (these are still small towns so don't expect much variety). There is a fair amount of flexibility with resupply strategies here since you could also opt for longer food carries or supplement your resupply with meals from the many huts along the way. Some of the huts may be closed or have limited services during this time of the year so plan carefully. The schedule given on the resupply spreadsheet is a good balance of limiting off-trail resupply miles and food carry distances. The GPS files include some additional options as well.
There are no places along the trail to buy a threaded fuel canister. You'd have to hike south from the mountains and catch a bus or train to Sofia. The only place where you can catch a train directly from the trail is Gara Lakatnik, after 500km of hiking. You can also take a train into Sofia early in the next section. Denatured alcohol (СПИРТ) can often be found in general stores and is purple.
Most sources should be flowing well early in the year. The sources mentioned in the GPS data are not exhaustive and often don't include obvious sources such as larger rivers or towns. Water can also be acquired at most mountain huts (check hut descriptions in Huts/Shelters info). Possibly the longest water carry of the whole Kom-Emine begins only ~3km after leaving Cape Emine, which may require carrying for the rest of the day and a dry camp. Thankfully the temperatures should be cool and the early terrain is easy.
Huts / Shelters
There are many staffed huts along the route as well as unstaffed shelters in various conditions. Wild camping is not permitted within Central Balkans National Park, but there are many huts and shelters for the ~100km of trail through the park.
Borders / Transportation / Other
The most important information here is how to get to Cape Emine. Burgas has the closest international airport, but I haven't been able to confirm a place to buy threaded fuel canisters for your first resupply. Sofia certainly has them, so you could fly there and take the train to Burgas. Eastern Europe is very easy to explore on a budget, so feel free to travel a bit before hitting the trail. Regardless of how you get to Burgas, you'll then need to take a bus north to Sunny Beach. During the summer the local bus lines in Sunny Beach extend all the way to the Elenite resort area, but in the early season you'll have to walk most of the way or flag a taxi (ask the price beforehand so you don't get ripped off). From Elenite it's a 10km hike to the village of Emona, which has a small hiker-friendly bar/restaurant. I humbly suggest having at least a drink there before walking the ~2km to the Cape and finding a place to camp above the cliffs. In the morning you can watch the sunrise over the Black Sea before setting off.
Day 1 _ 20 km_#TEAR2019_We woke up early
Next Section: The Balkan Gap


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Wondering how to dispose of acetone? Acetone is a solvent. It is used in a variety of items at home. For example, it may be found in certain wood varnishes and stains. It's been touted as an effective paint remover. Adhesives are another common application for acetone.
On the other hand, most individuals will be aware of acetone through nail-polish remover. That product contains acetone with a little bit of isopropyl alcohol.
How Dangerous is Acetone?
You'll need to keep the windows open when using an acetone-based product. In some situations, you may even need to wear a filter mask. Because acetone is such a powerful solvent, this is the case. Even tiny amounts can result in serious breathing issues.
Acetone is also an extremely combustible liquid. It will ignite if a naked flame approaches it. In fact, not only will the acetone catch fire, but so will everything else within a radius of several feet.
As you might imagine, because acetone is a hazardous chemical, you should be very cautious when discarding it. If you don't take precautions, your garbage can could burn.
Acetone is highly combustible. It isn't like gasoline, where it can just be poured down a drain or washed away in the water supply. Rather, acetone is flammable. While it does happen rarely, something can ignite acetone.
Once acetone has been disposed of improperly, it will begin to seep into the earth's soil around it. This will lead to a complete loss of fertility in the surrounding area.
Things You Need to Dispose of Acetone
When you're ready to get rid of acetone, you first need to understand how to dispose of it properly. You'll need a few supplies before getting started. Here's what you'll need:
- A funnel
- An absorbent material like cat litter, sawdust, or sand
- Safety gloves
- A mask (if you're dealing with large amounts of acetone)
- A plastic garbage bag
- A sealable metal container
How to Dispose of Acetone?
When you follow all of the necessary procedures carefully, disposing of acetone is simple. Make sure you have your safety equipment ready before beginning.
We've divided the process of eliminating acetone into three methods. Here are some examples of how to safely get rid of acetone:
1. Disposing of Acetone Cleaning Products
Acetone is a non-toxic, biodegradable chemical. Acetone use with cotton balls or swabs should be placed in a plastic bag and thrown away afterward. Tie the bag and put it in your regular trash.
After removing soaked cotton balls, wash your hands. If you have a lot of acetone on hand, squeeze them into a separate container to eliminate any excess. Place the container in its original packaging and send it to a recycling facility as normal refuse.
2. Disposing of Acetone Paint Thinner
Wear protective gloves and a face mask while removing acetone paint thinner. This is to avoid the fumes of paint thinner from harming you. Pour the used paint thinner into a jar or sealable container through a coffee filter.
As the liquid dries, it will accumulate in the filter, and the rest of the product (the solvent) will pour into the jar. Ensure that your jar or container has an airtight lid before closing it up for storage.
Allow the paint to dry in the coffee filters, wrap them in newsprint, and throw them away in your home. The acetone from this jar may also be used as a paint thinner again. On the label of the pot, write down the type of thinner and when you are straining it.
Locate a hazardous waste recycling and disposal facility near your property if possible. EPA or Earth911 websites can help you find these centers.
3. Disposing of Leftover Acetone
In addition to the above, it's critical to properly dispose of any unwanted acetone, old nail polish, or remover. Keep unused nail polish and remover bottles in a separate container in your salon or at home.
A tiny portion of this container should be sent to a local hazardous waste recycling facility. Never drain the acetone nail polish remover down the sink.
Similarly, if you have any acetone left over, put it in a sealed container. Please keep it away from flammable things and hot surfaces. Once in a secure container, go to the EPA or Earth911 websites and look for a recycling center near you.
Now that you know how to dispose of acetone let's talk about how to store it. Acetone should always be kept in a cool, dry place. It should also be kept away from any heat sources or open flames. The ideal storage temperature for acetone is between 50°F and 77°F (between -15°C and 25°C).
Acetone is a flammable liquid, so it's important to keep it in a safe place. A metal container with a tight-fitting lid is the best option for storing acetone. Glass containers are also an option, but they're more likely to break if dropped.
Acetone Safety Tips
When working with acetone, it's important to take some basic safety precautions. Here are a few things to keep in mind:
- Acetone is a flammable liquid, so it should be kept away from heat sources and open flames.
- Acetone is harmful if inhaled, so it's important to work in a well-ventilated area.
- If you get acetone on your skin, wash it off immediately with soap and water.
- If you get acetone in your eyes, flush them out with water for 15 minutes and seek medical attention.
Acetone is a safe solvent for home use but is classified as hazardous waste. It's necessary to follow local hazardous waste disposal standards. To avoid spills, store acetone in a sealed container.
Acetone has negative and positive effects on one's health and the environment. If you have any unused or used acetone, the first step is to pour it into a sealable container. Then, go to your local recycling facility and leave the container with them.
Where can I find a hazardous waste recycling facility near me?
The EPA or Earth911 websites can help you find these centers.
Can I pour acetone down the drain?
No, it would help if you never poured acetone down the drain.
Can I store acetone in a plastic container?
No, acetone is a flammable liquid, so it should be stored in a metal or glass container with a tight-fitting lid.


The PtChg Command
Command Summary
Inverts a point on the graph screen.
Command Syntax
PtChg x, y
Menu Location
Calculator Compatibility
This command works on all calculators.
Token Size
2 bytes
The PtChg command inverts a point on the graph screen — drawing it if it isn't already there, and erasing it otherwise. It uses point coordinates, which means that the result is determined by window variables: the x-coordinate must be between xmin and xmax, and the y-coordinate must be between ymin and ymax (with (xmin,ymin) being the bottom left and (xmax,ymax) the top right corner).
Unlike pixel commands such as PxlChg, however, PtChg won't give an error if the coordinates happen to be outside these bounds — it simply won't have any effect.
Advanced Uses
PtChg can also be used with two lists of the same size. In that case, it will invert the points for every pair of elements (xlist[n], ylist[n]). This can be used as an alternative to plots (see NewPlot) to plot a set of points.
Related Commands


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Tanzania secondary schools in rural areas are geographically and socially isolated, hence face a number of problems in getting learning materials resulting in poor performance in National examinations.
E-learning as defined to be the use of information and communication technology (ICT) for supporting the educational processes has motivated Tanzania to apply ICT in its education system.
There has been effort to improve secondary school education using ICT through several projects. ICT for e-learning to Tanzania rural secondary school is one of the research projects conceived by the University of Dar-es-Salaam through its College of Engineering and Technology. The main objective of the project is to develop a tool to enable ICT support rural secondary school.
The project is comprehensive with a number of components, one being development of e-learning management system (e-LMS) for Tanzania secondary schools.
This paper presents strategies of developing e-LMS. It shows the importance of integrating action research methodology with the modeling methods as presented by model driven architecture (MDA) and the usefulness of Unified Modeling Language (UML) on the issue of modeling.
The benefit of MDA will go along with the development based on software development life cycle (SDLC) process, from analysis and requirement phase through design and implementation stages as employed by object oriented system analysis and design approach.
The paper also explains the employment of open source code reuse from open source learning platforms for the context sensitive development of the e-LMS for Tanzania secondary schools.


text: Aeroflex's software for the 3500 1 GHz Hand-Held Radio Test Set supports Survey Technologies Field Test 6 Software. Now, users of the 3500 Series can improve and automate the acquisition, analysis and display of signal strength across a given terrain, as well as inside buildings. Field Test 6 has expanded the drive-test measurement concept to include indoor measurement and analysis for applications where GPS is not available. The hand-held capability of the 3500, along with the Field Test 6 software, allows users to map out their building or geographical areas and find any sections that contain a weak signal. Armed with this information users can improve critical communications within those areas.


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Why is standardisation important?
- A lack of standardisation impedes the development of the market. Using multiple standards means devices cannot communicate. Standardisation is important for the industry to be truly efficient and integrated.
- However it is important that the standard is allowed to develop over time. Technology in this sector is moving on and any standard needs to be flexible enough to move with technological changes.
- This community is dedicated to promoting a progressive standard. As technology develops, the WAVE2M standard will be allowed to develop and improve.


text: The aeroengine turbine cavity with pre-swirl structure makes the turbine component obtain better cooling effect, but the complex design of inlet and outlet makes it difficult to determine the heat transfer reference temperature of turbine disk. For the pre-swirl structure with two air intakes, the driving temperature difference of heat transfer between disk and cooling air cannot be determined either in theory or in test, which is usually called three-temperature problem. In this paper, the three-temperature problem of a rotating cavity with two cross inlets are studied by means of experiment and numerical simulation. By substituting the adiabatic wall temperature for the inlet temperature and summarizing its variation law, the problem of selecting the reference temperature of the multi-inlet cavity can be solved. The results show that the distribution of the adiabatic wall temperature is divided into the high jet area and the low inflow area, which are mainly affected by the turbulence parameters λT, the rotating Reynolds number Reω, the high inlet temperature Tf,H* and the low radius inlet temperature Tf,L* of the inflow, while the partition position rd can be considered only related to the turbulence parameters λT and the rotating Reynolds number Reω of the inflow. In this paper, based on the analysis of the numerical simulation results, the calculation formulas of the partition position rd and the adiabatic wall temperature distribution are obtained. The results show that the method of experiment combined with adiabatic wall temperature zone simulation can effectively solve the three-temperature problem of rotating cavity.