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Jika anda tidak menemukan yang anda cari silahkan cari disini

August 22, 2007

Hanoi Game (Delphi)

Teman-teman disini saya ingin mencoba menjelaskan suatu program kecil mengenai game yang sudah lama dan dulu sempat booming. Hanoi merupakan pengaplikasian dari suatu cerita yaitu:
dulu ada seorang biksu yang ingin memindahkan kuilnya dari suatu tempat ke tempat lain. ditempat yang baru itu dia harus melewati suatu bukit. Biksu itu hanya mampu membawa satu bagian saja dari kuilnya tersebut. Persoalannya adalah bagaimana membawa bagian2 tersebut secara cepat. cerita itu dapat digambarkan sesuai dengan gambar dibawah ini.

Balok-balok tersebut harus dipindahkan dari tiang 1 (asal) ke tiang 3 (tujuan) dengan bantuan tiang 2 (bantuan).

Sekarang kita mulai masuk pada logika kita. untuk mempercepat waktu pemindahan maka kita membutuhkan langkah terpendek. Nah menurut perhitungan secara matematika dan statistik didapat persamaan :

(2^jumlah balok) - 1



contoh:

  1. jumlah balok = 2 =========> (2^2)-1 = 3
  2. jumlah balok = 3 =========> (2^3)-1 = 7
  3. jumlah balok = 4 =========> (2^4)-1 = 15 dst
Dari contoh game yang dulu kita hanya bisa memainkan saja akan tetapi kita tidak bisa menganalisa pergerakannya. dengan game yang saya buat, maka dengan memencet tombol Solusi maka akan secara animatif terlihat pergerakan balok tersebut yang disertai dengan tabel untuk memperjelas. Hal itu dapat di lihat pada gambar berikut:

Seperti yang terlihat, bahwa pada langkah ke 76 balok 10 berpindah dari tiang 1 ke tiang 2 dan gambar menunjukkan akan memulai langkah ke 77 yaitu balok 12 akan berpindah dari tiang 3 ke tiang 1 sampai pada langkah terakhir yaitu
(2^12) -1 = 4095.

Disini saya buat dengan bahasa program delphi 5 yang akan saya terangkan secara singkat mengenai logika dan kodenya

Untuk mencari jumlah langkah terpendek, function berikut akan sedikit membantu:

function Tfrmha.langkahterpendek(nilai:integer) : integer;
var i: integer;
begin
Result:=1;
for i:=1 to nilai do
Result:=result*2;
Result:=Result-1;
end;

Fungsi diatas pasti sudah jelas, bagi yang belum jelas kebangetan.....ha....ha....ha. Maaf cuma guyon. tapi pada waktu lain pasti akan saya jelaskan kode dasar delphi atau dapat dilihat diblogku yang lain yaitu http://belajardelphi.blogspot.com

Oke selanjutnya untuk kode dari gerakan balok maka prosedur ini akan sangat membantu:

procedure Tfrmha.hanoi(var cacah_gerak : integer; Cacah,Asal,Lewat,Tujuan :integer);
begin
if Cacah > 0 then
begin
hanoi(cacah_gerak,Cacah-1,Asal,Tujuan,Lewat);
cacah_gerak:=succ(cacah_gerak);
StringGrid2.Cells[0,cacah_gerak]:=IntToStr(cacah_gerak);
StringGrid2.Cells[1,cacah_gerak]:=IntToStr(jum-cacah+1);
StringGrid2.Cells[2,cacah_gerak]:=IntToStr(Asal);
StringGrid2.Cells[3,cacah_gerak]:=IntToStr(Tujuan);
hanoi(cacah_gerak,Cacah-1,Lewat,Asal,Tujuan);
end;
end;

Catatan saya menggunakan komponen StringGrid untuk tabelnya.

Nah sekarang anda silahkan mencoba dengan kreativitas anda sendiri. Bagi yang masih bingung dan memerlukan bantuan silahkan email ke feribayek@telkom.net

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August 17, 2007

Borland to Present at the JPMorgan 35th Annual Technology Conference

CUPERTINO, Calif., - May 16, 2007 : Borland Software Corporation (NASDAQ: BORL), the global leader in Open Application Lifecycle Management (ALM), today announced that Erik Prusch, CFO, will present to the investment community at the JPMorgan 35th Annual Technology Conference at the Westin Boston Waterfront in Boston, Massachusetts. The presentation is scheduled for 3:40 p.m. Eastern Daylight Time on Monday, May 21, 2007. A live webcast can be accessed at https://events.jpmorgan.com. A replay of the presentation will be available for thirty days on the Investor Relations section of the company’s corporate web site.
About Borland

Founded in 1983, Borland (NASDAQ: BORL) is the leading vendor of Open Application Lifecycle Management (ALM) solutions – open to customers’ processes, tools and platforms – providing the flexibility to manage, measure and improve the software delivery process. To learn more about maximizing the business value of software, visit http://www.borland.com.

Borland and all other Borland brand and product names are service marks, trademarks or registered trademarks of Borland Software Corporation or its subsidiaries in the United States and other countries. All other marks are the property of their respective owners.

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Borland Announces Results of 2007 Annual Meeting of Stockholders

CUPERTINO, Calif., - May 30, 2007 : Borland Software Corporation (NASDAQ: BORL), the global leader in Open Application Lifecycle Management (ALM), today announced results from its annual meeting of stockholders held on May 29, 2007 in Cupertino, California.

Stockholders re-elected Mr. Mark Garrett, Mr. William K. Hooper, Mr. Tod Nielsen, Mr. John F. Olsen, Mr. T. Michael Nevens and Mr. Robert M. Tarkoff to the board of directors.

Stockholders approved an amendment to Borland’s 1999 Employee Stock Purchase Plan to increase the number of shares available for issuance by an additional 2,500,000 shares of common stock.

Stockholders also ratified the selection of PricewaterhouseCoopers LLP to continue to serve as Borland’s independent registered public accounting firm for the fiscal year ending December 31, 2007.
About Borland

Founded in 1983, Borland (NASDAQ: BORL) is the leading vendor of Open Application Lifecycle Management (ALM) solutions – open to customers’ processes, tools and platforms – providing the flexibility to manage, measure and improve the software delivery process. To learn more about maximizing the business value of software, visit http://www.borland.com.

Borland and all other Borland brand and product names are service marks, trademarks or registered trademarks of Borland Software Corporation or its subsidiaries in the United States and other countries. All other marks are the property of their respective owners.

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Borland Expands Partner Ecosystem for Open Application Lifecycle Management

Best-in-Class Partner Technologies Bolster Borland Lifecycle Quality Management Solution; Support Customers’ Existing Investments in Tools, Processes and Platforms

Cupertino, Calif. - Jun 18, 2007 : Borland Software Corporation (NASDAQ: BORL, www.borland.com), the global leader in Open Application Lifecycle Management (ALM), today announced it has expanded its Open ALM partner ecosystem to provide customers with solutions that further optimize and accelerate critical software delivery lifecycle processes. The partnerships further extend Borland’s Open ALM product strategy by bringing to market solutions that are flexible enough to support customers' existing investments in ALM tools, processes and platforms.

The new technology partnerships include Codefast™ Inc., dynaTrace Software and Ring-Zero Software. Each of these partners will provide unique and complementary technologies designed to bolster Borland’s Lifecycle Quality Management (LQM) solution. Specifically, the partners will enhance Borland® Gauntlet®, a continuous integration and test automation system, and Borland’s Silk product line of enterprise-class quality management solutions, with capabilities ranging from next generation build automation and performance diagnostics to advanced integration connectors that protect and maximize customers’ existing investments in third-party technologies.

“Borland’s vision for Open ALM is to enable customers to automate existing processes through the integration of any combination of lifecycle tools they choose – both Borland and third-party,” said Marc Brown, vice president of product marketing, Borland Software. “With the integration of the partner technologies announced today, we are building on our Open ALM vision by broadening our support for third party lifecycle tools, development processes and platform environments, while helping customers adopt a more comprehensive and proactive approach to software quality.”

* Borland Gauntlet integration with Codefast PerfectBuild™ – provides a Continuous Integration and Test (CIT) infrastructure that delivers maximum performance and scalability throughout the enterprise by overcoming the performance, reliability and adaptability limitations of customers’ existing build processes. The integration enables Borland Gauntlet users to access PerfectBuild’s pattern-driven build automation and management solution to create scalable, adaptable “push-button” builds across a wide number of platforms while fully utilizing customers’ existing build infrastructures.
* Borland SilkPerformer integration with dynaTrace Diagnostics® - enables developers and Quality Assurance to more efficiently detect, isolate and resolve performance issues in today’s complex, highly distributed and heterogeneous .NET and Java application environments. The integrated solution completes the performance testing and tuning process by combining Borland SilkPerformer’s ability to isolate performance issues through load and stress testing with the ability of dynaTrace Diagnostics to trace the root-cause of performance bottlenecks down to the code-level – accelerating problem resolution and speeding the performance tuning process for reduced costs.
* Borland third-party connectors delivered by Ring-Zero Software - designed to support and protect customers’ investments in non-Borland tools and technologies by providing integration connectors that will enable better use and management of those tools, including HP/Mercury testing solutions. The connectors will also help to provide meaningful alignment to better support ALM processes, traceability and tool usage across teams and projects.


For more information on Borland’s Open ALM solutions, please visit:
http://www.borland.com/us/company/index.html

For more information on Borland’s LQM solution, please visit:
http://www.borland.com/us/solutions/lifecycle-quality-management/index.html
Partner Quotes
Codefast

"PerfectBuild and Gauntlet are very complimentary to one another," said Nick Berens, CEO, Codefast. "Developers want quick, reliable results, and systems that are simple to operate and update. Managers need the power to ensure policies are followed and easy visibility into what’s going on. By combining PerfectBuild and Gauntlet, we are giving them an integrated solution, which satisfies the needs of both parties. Borland has the resources and experience to help enterprises adopt CIT and we are excited to be working with them."
dynaTrace

“Reducing the cost and time required to quickly and proactively solve and prevent performance disasters is a standing IT requirement,” said Bernd Greifeneder, CEO dynaTrace. “Borland and dynaTrace deliver on this with purpose-built, code-level .NET and Java diagnostics for performance testing.”
Ring-Zero Software

“Customers need ALM solutions that can leverage other systems and tools in which they’ve invested,” said Jason Slater, CEO, Ring-Zero Software. “Borland and Ring-Zero have partnered to deliver on Borland’s Open ALM vision of improving processes without requiring toolset standardization or fully proprietary solutions.”
About Borland

Founded in 1983, Borland (NASDAQ: BORL) is the leading vendor of Open Application Lifecycle Management (ALM) solutions – open to customers’ processes, tools and platforms – providing the flexibility to manage, measure and improve the software delivery process. To learn more about maximizing the business value of software, visit http://www.borland.com.

Borland, Gauntlet, SilkPerformer and all other Borland brand and product names are service marks, trademarks or registered trademarks of Borland Software Corporation or its subsidiaries in the United States and other countries. Codefast, PerfectBuild and all other Codefast brand and product names are service marks, trademarks or registered trademarks of Codefast, Inc. or its subsidiaries in the United States and other countries. dynaTrace Diagnostics and all other dynaTrace brand and product names are service marks, trademarks or registered trademarks of dynaTrace Software GmbH or its subsidiaries in the United States and other countries. All other marks are the property of their respective owners
Safe Harbor Statement

This release contains "forward-looking statements" as defined under the U.S. Federal Securities Laws, including the Private Securities Litigation Reform Act of 1995 and is subject to the safe harbors created by such laws. Forward-looking statements may relate to, but are not limited to, the features available in, and the potential benefits to be derived from, Borland products and solutions, and the release dates, plans and market acceptance of such products and solutions, including the Borland Open ALM solution. Such forward-looking statements are based on current expectations that involve a number of uncertainties and risks that may cause actual events or results to differ materially. Factors that could cause actual events or results to differ materially include, among others, the following: rapid technological change that can adversely affect the demand for Borland products, shifts in customer demand, shifts in strategic relationships, delays in Borland's ability to deliver its products and services, software errors or announcements by competitors. These and other risks may be detailed from time to time in Borland periodic reports filed with the Securities and Exchange Commission, including, but not limited to, its latest Annual Report on Form 10-K and its latest Quarterly Report on Form 10-Q, copies of which may be obtained from www.sec.gov. Borland is under no obligation to (and expressly disclaims any such obligation to) update or alter its forward-looking statements whether as a result of new information, future events or otherwise. Information contained in our website, or in other press releases or other documents referred to herein, is not incorporated by reference in, or made part of this press release.

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Borland Teams with VMware to Advance Software Quality Testing with Management of Virtual Lab Environments

Borland® SilkCentral® Test Manager™ extends test management reach and coverage with seamless integration with VMware® Lab Manager; enables users to minimize costs of multi-configuration, cross-platform testing

Cupertino, Calif. - Jul 09, 2007 : Borland Software Corporation (NASDAQ: BORL, www.borland.com), a global leader in Open Application Lifecycle Management (ALM), today announced an integration with VMware software to enable enterprise software development organizations to more cost effectively perform multi-configuration and cross-platform software application testing by maximizing the use of virtualization.

Borland will deliver native support for virtual lab environments by integrating Borland® SilkCentral® Test Manager™ 2007, a core component of Borland's Lifecycle Quality Management (LQM) solution, with VMware® Lab Manager version 2.5. SilkCentral Test Manager 2007, the latest release of the company's software test management platform, will extend test management reach and coverage with seamless access to virtualized test environments in VMware Lab Manager, addressing a critical challenge development and quality assurance teams face – the inability to fully test applications across multiple configurations and platforms due to the time and cost constraints of maintaining many separate, physical test labs.

"A major bottleneck to testing is the lack of available systems and infrastructure resources on which to run tests," said Melinda-Carol Ballou, program director for application lifecycle management software at IDC Research.(1) "In many instances, groups with access to those resources hoard them and share sporadically or ineffectively. Creating and managing complex systems configurations on which to run tests is also a significant barrier. Virtual test lab management helps to lessen and even eliminate those barriers by providing a platform on which to manage and run test management solutions, scripts, and tests."

With the ability to call VMware Lab Manager environments directly from SilkCentral Test Manager, users can create and assign individual tests to run on many different configurations or platforms without the high costs of hardware or the time needed to administer physical systems. Productivity can also be improved by optimizing the use of virtualized infrastructure, allowing pooled resources to be shared across testing and development teams.

The integration will allow users to provision even the most complex development and test environments in minutes, rather than days, and shave significant time off software development cycles through rapid, automated setup and teardown. Once a test run is started, the integration works seamlessly with VMware Lab Manager to deploy the requested virtual environments, run all tests, collect data from the systems, and shut them down again when completed.

"Virtualization is one of the hottest, game-changing trends in the IT industry today and offers an attractive value proposition for organizations challenged with complex testing environments," said Brad Johnson, director of product marketing, Lifecycle Quality Management, Borland Software. "Borland is embracing the rapid adoption of virtualization technologies not with a 'plug-in' approach, but with the only tightly integrated solution developed in collaboration with the virtualization market leader. This combined solution could be used to dramatically impact the way global organizations test and ensure quality at a fraction of the cost of traditional approaches."

"VMware is committed to bringing products to market that harness the power of virtualization to simplify and streamline the software development lifecycle," said Dan Chu, vice president of emerging products and markets, VMware. "The deep integration between VMware Lab Manager and Borland's test management platform delivers a powerful instantiation of our vision for the product, and we're excited to deliver the benefits of this unique solution to our joint customers."

Pricing for Borland SilkCentral Test Manager 2007 starts at $1,700 per seat license for named users. Expected availability is the third calendar quarter of 2007.

For more information on Borland SilkCentral Test Manager and related technologies, please visit: http://www.borland.com/us/products/silk/silkcentral_test/index.html.
About Borland

Founded in 1983, Borland (NASDAQ: BORL) is a leading vendor of Open Application Lifecycle Management (ALM) solutions - open to customers' processes, tools and platforms – providing the flexibility to manage, measure and improve the software delivery process. To learn more about maximizing the business value of software, visit http://www.borland.com.

Borland, SilkCentral, Test Manager and all other Borland brand and product names are service marks, trademarks or registered trademarks of Borland Software Corporation or its subsidiaries in the United States and other countries. VMware and all other VMware brand and product names are service marks, trademarks or registered trademarks of VMware, Inc. or its subsidiaries in the United States and other countries. All other marks are the property of their respective owners.

1 "IDC, Virtualization and Automated Testing - Augmenting the Life Cycle, Doc #204895, December 2006.
Safe Harbor Statement

This release contains "forward-looking statements" as defined under the U.S. Federal Securities Laws, including the Private Securities Litigation Reform Act of 1995 and is subject to the safe harbors created by such laws. Forward-looking statements may relate to, but are not limited to, the features available in, and the potential benefits to be derived from, Borland products and solutions, and the release dates, plans and market acceptance of such products and solutions, including Borland Open ALM products and solutions. Such forward-looking statements are based on current expectations that involve a number of uncertainties and risks that may cause actual events or results to differ materially. Factors that could cause actual events or results to differ materially include, among others, the following: rapid technological change that can adversely affect the demand for Borland products, shifts in customer demand, shifts in strategic relationships, delays in Borland's ability to deliver its products and services, software errors or announcements by competitors. These and other risks may be detailed from time to time in Borland periodic reports filed with the Securities and Exchange Commission, including, but not limited to, its latest Annual Report on Form 10-K and its latest Quarterly Report on Form 10-Q, copies of which may be obtained from www.sec.gov. Borland is under no obligation to update its forward-looking statements. Information contained in our website is not incorporated by reference in, or made part of this press release.

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Borland Contributes to Productivity and Efficiency at Raymond James

Borland® StarTeam® Powers Centralized IT Document Management System; Company To Roll Out Additional Borland Open ALM Solutions as Part of Long-Term IT Transformation Strategy

Cupertino, Calif - Jul 17, 2007 : Borland Software Corporation (NASDAQ: BORL, www.borland.com), a global leader in Open Application Lifecycle Management (ALM), today announced that Raymond James Financial, Inc. (NYSE-RJF) is successfully using Borland® StarTeam® to power a new, custom-built document management system that has enhanced IT project visibility, team collaboration and overall organizational productivity.

The company is also in the process of implementing additional Borland Open ALM solutions as part of a long-term IT transformation strategy designed to establish more consistent processes and tool automation across the software delivery lifecycle. Raymond James has been aggressive in its efforts to optimize processes in its IT Department so that it may more efficiently deliver the products and services that drive its competitive advantage.

"Borland's technology promotes a new level of sharing and re-use across projects that will ultimately lead to improved predictability in our organization's project output," said Sue Desiderio, manager in software engineering at Raymond James. "In the past, it was more difficult to maintain consistency in project documentation management. Borland's Open ALM solutions will save us a great deal of time in researching and transferring knowledge between teams and across projects."

Raymond James, a Florida-based diversified holding company providing financial services worldwide, employs more than 4,650 financial advisors serving approximately 1.6 million accounts in 2,200 locations throughout the United States, Canada, and overseas.

With more than 50 active technology projects underway at any given time – each generating its own library of documents originating in applications such as Visio®, Word and Excel® – the company needed a centralized repository to store, view and download project-related documents as well as a platform for collaboration, approvals, document change tracking and version control. The company also needed to ensure it was capturing, archiving and auditing all changes and versions of project-related documents to satisfy compliance mandates.

Raymond James chose to implement Borland StarTeam, the company's software change and configuration management offering and a core component of its Change Management solution, as the foundation for a new custom-built document management system. The Wed-based system utilizes Borland StarTeam to establish a centralized repository for all IT project documents and artifacts.

"With a single location for all project documents, we can apply a level of consistency and organization to how projects are managed that didn't exist before," said Desiderio. "The system has made our lives easier and will help maintain the quality of service our clients have come to expect from us."

Utilizing Borland StarTeam's broad operating system and third party tool support, Raymond James was able to integrate the system with their existing technologies and deploy the system in just four months. Today, the system has been adopted by over 350 business and technical users, upgrading communication, collaboration, and traceability between IT project teams. The system has also helped the IT Department increase team productivity and efficiency by streamlining and automating the process of reviewing, approving and sharing project-related documents. In addition, Borland StarTeam's version tracking and change control capabilities have helped to ensure that Raymond James retains all of the proper auditing and controls for regulatory compliance.

Additionally, as part of Raymond James' long-term IT transformation strategy, the company is currently rolling out Borland CaliberRM™ and Borland Caliber® DefineIT™ to automate the requirement elicitation and management process, and to act as a single repository for all IT project requirements across the organization. The company has also selected Borland Together® to provide visual modeling for software architecture design.
About Raymond James Financial, Inc.

Raymond James Financial (NYSE-RJF) is a Florida-based diversified holding company providing financial services to individuals, corporations and municipalities through its subsidiary companies. Its three principal wholly owned broker/dealers, Raymond James & Associates, Raymond James Financial Services and Raymond James Ltd. have more than 4,650 financial advisors serving 1.6 million accounts in 2,200 locations throughout the United States, Canada and overseas. Total client assets are approximately $208 billion. Approximately $36.3 billion are managed by the firm's asset management subsidiaries.
About Borland

Founded in 1983, Borland (NASDAQ: BORL) is a leading vendor of Open Application Lifecycle Management (ALM) solutions – open to customers' processes, tools and platforms – providing the flexibility to manage, measure and improve the software delivery process. To learn more about maximizing the business value of software, visit http://www.borland.com.

Borland, StarTeam, CaliberRM, Caliber, DefineIT, Together and all other Borland brand and product names are service marks, trademarks or registered trademarks of Borland Software Corporation or its subsidiaries in the United States and other countries. Visio, Excel and all other Microsoft brand and product names are service marks, trademarks or registered trademarks of Microsoft Corporation or its subsidiaries in the United States and other countries. All other marks are the property of their respective owners.
Safe Harbor Statement

This release contains "forward-looking statements" as defined under the U.S. Federal Securities Laws, including the Private Securities Litigation Reform Act of 1995 and is subject to the safe harbors created by such laws. Forward-looking statements may relate to, but are not limited to, the features available in, and the potential benefits to be derived from, Borland products and solutions, and the release dates, plans and market acceptance of such products and solutions, including Borland Open ALM products and solutions. Such forward-looking statements are based on current expectations that involve a number of uncertainties and risks that may cause actual events or results to differ materially. Factors that could cause actual events or results to differ materially include, among others, the following: rapid technological change that can adversely affect the demand for Borland products, shifts in customer demand, shifts in strategic relationships, delays in Borland's ability to deliver its products and services, software errors or announcements by competitors. These and other risks may be detailed from time to time in Borland periodic reports filed with the Securities and Exchange Commission, including, but not limited to, its latest Annual Report on Form 10-K and its latest Quarterly Report on Form 10-Q, copies of which may be obtained from www.sec.gov. Borland is under no obligation to update its forward-looking statements. Information contained in our website is not incorporated by reference in, or made part of this press release.

Read More...

August 09, 2007

Membuktikan Teori Einstein Menggunakan Pensil

Albert Einstein, Paul Dirac, dan peletak dasar fisika lainnya mungkin menggunakan pensil untuk menuliskan teori relativitas dan mekanika kuantum. Baru-baru ini, para peneliti berhasil membuktikan teori tersebut juga menggunakan pensil - meskipun dalam bentuk yang lain.

Sebelumnya, untuk menguji teori relativitas Einstein hanya dapat dilakukan dengan cara membuat mesin yang sangat mahal atau mempelajari bintang-bintang di galaksi yang sangat jauh. Tapi, sebuah tim ilmuwan dari Inggris, Rusia, dan Belanda dapat membuktikannya di laboratorium dan bahan yang sederhana, pensil.

Isi pensil umumnya dibuat dari grafit, bahan karbon yang apabila digoreskan di atas kertas akan meninggalkan bekas warna hitam sebab atom-atomnya mudah terpisah. Grafit juga dikenal sebagai penghantar listrik yang baik. Setahun lalu, Andre Geim dari University of Manchester, Inggris menggunakan permukaan adesif untuk melekatkan lapisan grafit supertipis setebal atom yang disebut graphene.

Penelitian terhadap graphene menunjukkan beberapa fenomena yang menakjubkan sebagaimana dijelaskan dalan dua makalah dalam jurnal Nature edisi 10 November. Tim peneliti menggambarkan bagaimana arus listrik mengalir pada graphene karena adanya aliran elektron melalui struktur atom karbon. Tapi, elektron ini menunjukkan sifat-sifat yang tidak biasa.

Tim peneliti menemukan bahwa aliran elektron tidak melambat meskipun berada pada suhu yang lebih rendah. Dalam essence, elektron seperti tidak memiliki massa, mirip seperti partikel-partikel tanpa massa yang digambarkan dalam teori relativitas. Hal tersebut menunjukkan bahwa grafit dalam bentuknya yang lain ini tidak pernah berhenti bersifat menghantarkan listrik.

Para peneliti juga melaporkan pengaruh baru sifat relativitas. Mereka menunjukkan bahwa partikel tanpa massa ditarik oleh medan magnet dalam bentuk gerakan dinamis yang dideskripsikan dengan persamaan Einstein e=mc2. Ini mirip dengan kasus pada foton atau partikel cahaya yang juga tidak memiliki massa tapi tetap dapat terkena pengaruh dorongan gravitasi matahari yang gerakan dinamisnya dapat diterangkan dengan persamaan yang sama.

Secara terpisah, para fisikawan dari Columbia University yang dipimpin Philip Kim menguatkan penemuan ini. Ia juga menunjukkan bahwa elektron tak bermassa melakukan gerakan sesuai prediksi efek Hall.

Edwin Hall menunjukkan prediksi tentang fenomena ini sejak 1879 dengan menyatakan bahwa memberikan medan magnet pada arah yang tepat untuk mengubah suatu material bersifat seperti magnet (proses konduksi) akan menghasilkan beda tegangan yang berbanding terbalik dengan arus yang mengalir melalui bahan tersebut.

Pengaruh ini juga diaplikasikan dalam level kuantum dengan sebuah catatan, di samping tegangan naik secara perlahan karena meningkatnya intensitas magnetik, tegangan juga naik secara drastis. Inilah yang juga terjadi pada elektron di graphene.

Kim menulis bahwa penemuan ini akan menjadi dasar pengembangan aplikasi elektronika berbasis karbon dan magnet meskipun diperlukan penelitian lebih lanjut. Hal tersebut juga berarti bahwa isi pensil yang dipakai untuk membuat garis setebal ukuran atom dapat digunakan untuk membuktikan teori yang mungkin juga ditulis dengan pensil oleh ilmuwan dahulu kala.

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July 27, 2007

Visual Basic + ArcView

Seperti pada tulisan sebelumnya yaitu Delphi + ArcView, pada tulisan kali ini juga akan sedikit di bahas code untuk pemetaan menggunakan ArcView dengan bahasa VB 6.0

Contoh Kode yang sangat penting yaitu:

Zoom Full Extent
momap.Extent = momap.FullExtent

Zooin In
Dim recExtent As MapObjectsLT2.Rectangle
Set recExtent = momap.Extent
recExtent.ScaleRectangle (2) 'ZOOM IN
Set momap.Extent = recExtent

Zoom Out
Dim recExtent As MapObjectsLT2.Rectangle
Set recExtent = momap.Extent
recExtent.ScaleRectangle (0.5) 'ZOOM OUT
Set momap.Extent = recExtent

Zoom
momap.MousePointer = MapObjectsLT2.moZoom


Untuk Menambah Layer prosedur ini mungkin bisa membantu:

Private Sub AddLayer(FileName, Name As String, visible As Boolean, Syswarna As OLE_COLOR)
Dim mapLayer As New MapObjectsLT2.mapLayer
mapLayer.File = FileName
mapLayer.Name = Name
mapLayer.visible = True
If mapLayer.Valid Then
With mapLayer.Symbol
.Color = Syswarna
End With
If Not momap.Layers.Add(mapLayer) Then
MsgBox "Error adding MapLayer " & mapLayer.Name
End If
End If
End Sub

Keterangan Lebih Lanjut bisa hubungi di E-mailku

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