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Developing multi-agent systems with JADE
Thursday, September 3, 2009

Developing multi-agent systems with JADE
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Agent-Oriented Programming (AOP) is a relatively new software paradigm that brings concepts from the theories of artificial intelligence into the mainstream realm of distributed systems. AOP essentially models an application as a collection of components called agents that are characterized by, among other things, autonomy, proactivity and an ability to communicate. Being autonomous they can independently carry out complex, and often long-term, tasks. Being proactive they can take the initiative to perform a given task even without an explicit stimulus from a user. Being communicative they can interact with other entities to assist with achieving their own and others’ goals. The architectural model of an agent-oriented application is intrinsically peer to peer, as any agent is able to initiate communication with any other agent or be the subject of an incoming communication at any time.

Agent technology has been the subject of extensive discussion and investigation within the scientific community for several years, but it is perhaps only recently that it has seen any significant degree of exploitation in commercial applications. Multi-agent systems are being used in an increasingly wide variety of applications, ranging from comparatively small systems for personal assistance to open, complex, mission-critical systems for industrial applications. Examples of industrial domains where multi-agent systems have been fruitfully employed include process control, system diagnostics, manufacturing, transportation logistics and network management.

When adopting an agent-oriented approach to solving a problem, there are a number of domainindependent issues that must always be solved, such as how to allow agents to communicate. Rather than expecting developers to develop this core infrastructure themselves, it is convenient to build multi-agent systems on top of an agent-oriented middleware that provides the domain-independent infrastructure, allowing the developers to focus on the production of the key business logic.
This book describes JADE (Java Agent DEvelopment framework), probably the most widespread agent-oriented middleware in use today. JADE is a completely distributed middleware system with a flexible infrastructure allowing easy extension with add-on modules. The framework facilitates the development of complete agent-based applications by means of a run-time environment implementing the life-cycle support features required by agents, the core logic of agents themselves, and a rich suite of graphical tools. As JADE is written completely in Java, it benefits from the huge set of language features and third-party libraries on offer, and thus offers a rich set of programming
abstractions allowing developers to construct JADE multi-agent systems with relatively minimal expertise in agent theory. JADE was initially developed by the Research & Development department of Telecom Italia s.p.a., but is now a community project and distributed as open source under the LGPL licence.

The book’s intended audience is primarily application developers with goals to both provide a comprehensive explanation of the features provided by JADE and also to serve as a handbook for programmers. Many of the features discussed are supported with exemplary code, either ad hoc or positioned with the context of a pervasive ‘book trading’ example. All code snippets and application examples provided in the book relate to version 3.4.1 of JADE released on November 2006; although we expect this material will remain consistent with future versions and is, in the most part, backward compatible with previous versions of JADE.

The book is structured as follows: Chapter 2 presents an overview of agent technology discussing the most relevant agent-related concepts, architectures and tools. Moreover, it provides a summary of the FIPA specifications that represent the most important standardization activity conducted in the field of agent technology. Chapter 3 presents the core architecture of JADE, its components and supported features. It also shows how to start the platform, launch agents and use the graphical administration tools. Chapters 4, 5 and 6 focus on the main Application Programming Interfaces (APIs) that JADE provides to access its features. Chapter 4 describes the basic features, Chapter 5 the advanced features and Chapter 6 is dedicated to agent mobility. Chapter 7 presents the internal architecture of the JADE kernel and explains how to modify and extend its behaviour. Chapter 8 addresses the development and deployment of JADE-based applications in the mobile and wireless environment. Chapters 9, 10 and 11 present additional configurations and tools that can be used to solve issues that must typically be taken into account when deploying real-world applications.
Chapter 12 then discusses the JADE Semantic Framework, an important and recently released module that exploits the formal semantics of messages exchanged by agents. Finally, Chapter 13 gives an overview of other relevant tools that can be used with JADE.
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Posted byalbertusdwiyoga at 12:29 AM 0 comments    

A Time for Blended eLearning
Wednesday, September 2, 2009

A Time for Blended eLearning

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At the turn of the millennium, eLearning was touted as the next killer application, a technology-based business solution heralded by John Chambers of Cisco and others that would be the key driver of corporate profits and a knowledge-based global economy. At the same time, eLearning was shown to have the inherent capability of delivering training programs—anytime, anywhere—to desktops or laptops in all reaches of the world that had Internet access. That eLearning might, almost as a byproduct, significantly reduce travel and other indirect costs associated with training seemed mere icing on the cake. Thus, the real value-add of eLearning programs at large companies was that they could train and thereby enhance the competency of large numbers of employees who could, in turn, improve products, services, and overall productivity. So, have eLearning systems reached anywhere near this kind of potential?
The short answer is no, but things are moving in the right direction. At the present time, eLearning systems consist of several different software packages with components that were designed and produced by many smaller companies. These components typically include a learning management system, a learning content management system, collaboration software, virtual classroom software, a mobile learning solution, and testing or assessment software. Consequently, organizations that are purchasing these components have necessarily been heavily involved in the integration and customization of these disparate eLearning technologies.
In fact, putting together an eLearning system today is comparable to purchasing an automobile part-by-part for assembly at some later date. So it’s not surprising to hear about the horror stories that companies have encountered with componentized eLearning systems that do not function properly.

These difficulties are a result of interoperability problems and unexpected component limitations in scalability or functionality. And for companies with Human Resources departments that use legacy systems, additional integration and data migration problems have arisen as eLearning systems are being required to incorporate employee training records into company employee files. These difficulties, among others, have raised serious concerns about the functionality of today’s eLearning systems, as well as doubts about whether or not they will live up to their promised business potential.
Nonetheless, strategic eLearning investments are being made in what could be considered “best-in-breed” eLearning system components that can be fully integrated with other enterprise systems to satisfy the complex learning requirements of large organizations. These integrated eLearning systems will, of course, need to be upgraded in the future to include new training and learning technologies that are designed to work within established standards such as AICC and SCORM.
One way to avoid some of the guesswork associated with the initial installation, operation, and maintenance of an eLearning system is to install a hosted or ASP version as a pilot of a more comprehensive eLearning solution under consideration. Here, a hosting organization can provide the eLearning components and the necessary support staff for a specified period of time, typically one year. The company, in turn, pays a per-seat fee for trainees as payment for the pilot system. Then, based on the performance of the pilot, the company can decide on the final system design and the necessary resources to deploy a successful
eLearning solution. In some cases, this type of eLearning hosting model can become a long-term solution for organizations that do not ultimately have the resources, or perhaps the business interest, to build and maintain their own eLearning systems infrastructure.
The primary formats for eLearning today are live, online, or synchronous instruction for many participants in a virtual classroom environment or, alternatively, asynchronous selfxvii paced training for individualized instruction. Such eLearning systems can, of course, be enhanced by conventional training
methodologies that include meetings and seminars, instructorled training that covers specialized topics, and structured onthe- job training. Thus, the term Blended eLearning is broad enough to include complementary methods and technologies used to supplement those included in eLearning systems today.
And more often than not, this Blending will include performance
support and knowledge management technologies as well. With this kind of broad eLearning thinking as a backdrop, it is therefore appropriate that HRD Press is bringing out a new text that is devoted to this more comprehensive view of Blended eLearning. The authors, Drs. David Metcalf and Larry Bielawski, have a wealth of experience in university instructional programs as well as business and government programs associated with the training of personnel using emerging eLearning technologies. In this book, they have succeeded in producing a thorough and incisive description of the state of several technology segments that are currently
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Posted byalbertusdwiyoga at 11:49 PM 0 comments    

Networking in 24 hours
Monday, August 31, 2009

Networking in 24 hours
Free e-book for networking. for download this file klik this link

This book provides a reference guide for anyone who wants to get up to speed on computer network concepts and networking technologies. Because each piece of networking hardware and software operates differently, it would require a book the size of the New York City white pages to cover all aspects of the subject. Thus, this book concentrates on fundamental concepts. Emphasis is placed on understanding how the major components of a computer network function and how to use proven practices to deploy, upgrade, and maintain the network.

This book has been overhauled for this Fourth Edition, including scores of references to commercial products and websites. New coverage has been added related to Microsoft Windows Server software. Updated information on the Linux platform and wide area networks (WANs) is also included. The wireless material on Wi-Fi and Bluetooth has been updated and expanded. As well, the latest Internet security protocols have been added to Hour 20, “Security.”

The book is divided into six parts. Each part provides a body of information that covers a specific area pertaining to computer networks.
Part I, “What Is Networking?,” introduces networking, including an overview of the primary components of computer networks. This part explains the broader issues of how hardware and software function to support the interworking of computers, servers, routers, and other devices.

Part II, “The Basics,” focuses on the concepts underlying data networks. We examine how packet-switching operates and look at the operations of local area networks (LANs) and WANs. This part discusses computer network protocols and explains a widely used conceptual model that depicts how a sending computer transfers data to a receiving computer. Because of the impact and importance of wireless networks, the hour on this topic has been moved from Part VI (of the previous edition) to this part of the book.

Part III, “Building Networks,” walks you through the process of planning and building a network from conception to implementation. Issues related to planning network capacity, creating the network, and then connecting to the Internet are included as part of the discussion. For this latter discussion, the information of TCP/IP and related, supporting protocols has been expanded.

Part IV, “Network Operating Systems,” provides an overview of network operating systems, the major network servers, and Microsoft Windows Server 2003/2008, UNIX, and Linux.

Part V, “Network Administration,” examines the issues related to administering a network. This part includes discussions on both troubleshooting and management. . Part VI, “The Future of Networking,” examines future possible implementations of wireless technology, operating systems, and other aspects of networking. This part discusses the issues related to the future of Linux, the emerging network “cloud,” nationwide wireless hotspots, and the extraordinary field of protein-based computers. For these 24 hours, you will be the designer of a computer network, as well as its implementer. After you have successfully created a plan for the system, you will undo the shrinkwrap and assemble the components. Next, you will take over the role of the network administrator and make sure the users are happy with your creation. Don’t worry—you’ve been blessed with a competent project team; you can delegate a lot of the work to them.

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Posted byalbertusdwiyoga at 7:13 PM 0 comments    

International Financial Reporting Standards A Practical Guide (Fourth Edition Hennie van Greuning)

International Financial Reporting Standards A Practical Guide (Fourth Edition Hennie van Greuning)

Each chapter follows a common outline to facilitate discussion of each Standard.

1. Problems Addressed identifies the main objectives and the key issues of the Standard.

2. Scope of the Standard identifies the specific transactions and events covered by a Standard. In certain instances, compliance with the requirements of a Standard is limited to a specified range of enterprises.

3. Key Concepts explains the usage and implications of key concepts and definitions.

4. Accounting Treatment lists the specific accounting principles, bases, conventions, rules, and practices that should be adopted by an enterprise for compliance with a particular Standard. Recognition (initial recording) and measurement (subsequent valuation) is specifically dealt with where appropriate. Ix Introduction

5. Presentation and Disclosure describes the manner in which the financial and nonfinancial items should be presented in the financial statements, as well as aspects that should be disclosed in these financial statements—keeping in mind the needs of various users. Users of financial statements include investors; employees; lenders; suppliers or trade creditors; governments; tax and regulatory authorities; and the public.

6. Financial Analysis and Interpretation discusses items of interest to the financial analyst in chapters where such a discussion is deemed appropriate. It must be emphasized that none of the discussion in these sections should be interpreted as a criticism of IFRS. Where analytical preferences and practices are highlighted, it is to alert the reader to the challenges still remaining along the road to convergence of international accounting practices and unequivocal adoption of IFRS.

7. Examples are included at the end of most chapters. These examples are intended as further illustration of the concepts contained in the IFRS. The author hopes that managers in the client countries of the World Bank will find this format useful in establishing accounting terminology, especially where certain terms are still in the exploratory stage. Feedback in this regard is welcome.

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Posted byalbertusdwiyoga at 1:34 AM 0 comments    

desain dengan template mewah black white dan color full
Sunday, August 30, 2009

Wallpaper & desain lelegan
Black and white
Bagi anda yang lagi mencari-cari desain elegan anda dapat menempukan nya di sini. Desaain ini dapat menjadi inspirasi dalam pengembangan desain anda, misalnya desain web maupun desain-desain yang lain seperti desain foto, desain buku, desain tanggalan dan lain-lain.
Desain yang hanya didasari dengan dua warna yaitu hitam dan putih mampu memberikan roh desain warna yang mewan.

Anda dapat melihat secara detail sedain black white yang memberi inspirasi desain selanjutnya
Anda dapat mendownload pada link berikut download


Tektonik
Desain ini disusun dengan multi warna dengan nilai estetika yang menakjubkan.
Anda dapat mendownload pada link berikut download

Tembok china
Bagi anda yang belum pernah melihat temboh china, berikut saya berikan juga foto tembok china dengan berbagai perspektif yang berbeda. Anda pun dapat melihat dengan perspektif yang berbeda juga. Anda dapat menggunakan gambar-gambar ini untuk kebutuhan anda sendiri. Anda dapat mendownload pada alamat berikut download

Posted byalbertusdwiyoga at 11:49 PM 0 comments    

bisa mendapat $200 dari acme people search
Friday, August 14, 2009

Melalui program ini anda berpeluang memperoleh $200 gratis dalam 1 bulan.
Program ini sudah terbukti membayar dan diikuti oleh banyak sekali netter
dari seluruh dunia.
Nama program ini adalah ACME People Search. Berikut keuntungan yang akan
anda peroleh setelah Join GRATIS dalam program ini:
1. Anda bisa mendaftar secara gratis dan mendapatkan bonus $125 langsung jika
telah menyelesaikan step 1 sampai step 3.
2. Anda bisa memperoleh komisi $5 dari setiap referral yang mendaftar gratis
dan telah menyelesaikan step 1 dalam 30 hari sejak join. Jika referral anda
kurang memenuhi syarat maka komisi anda adalah $1 per referral.
3. Anda bisa memperoleh komisi tambahan $10 dari setiap referral yang
mendaftar gratis dan menyelesikan step 2 dalam 45 hari sejak join.
4. Anda bisa memperoleh komisi tambahan $15 dari setiap referral yang
mendaftar gratis dan menyelesaikan step 3 dalam 65 hari sejak join.
5. Jadi jika referral anda bisa aktif dan menyelesaikan step 1, 2 dan 3 maka
anda akan memperoleh komisi total $30 per referral.
6. Pembayaran akan dikirimkan ke rekening Paypal anda apabila telah terkumpul
total $200 termasuk bonus $125 tersebut. Program ini telah terbukti membayar
Cara bergabung dengan program ini:
klik link http://acme-people-search.com "Sign up for FREE" di halaman web
tersebut.

Dapatkan link referral "ACME People Search" anda dan promosikan, ajak
teman anda atau siapa saja untuk bergabung.
Jika anda ingin mendapatkan komisi yang lebih, sebaiknya selesaikan tahap step 2 dan step 3. Jika belum bisa cukup menggunakan step 1 saja (untuk member gratis).
Mengapa anda tidak mencobanya karena ini gratis dan tidak dipungut biaya
Silakan dicoba dengan klik alamat ini http://acme-people-search.com

Posted byalbertusdwiyoga at 12:35 AM 0 comments    

Check File Size ( Find File Size )
Thursday, August 13, 2009

gimana caranya mencari file yang berukuran tertentu di linux
stat command example
anda dapat menampilkan file atau file sistem dengan menggunakan perintah dari prompt. Opsi -c dapat digunakan untuk menampilkan informati tentang ukuran file tersebut

$ stat -c %s fw8ben.pdf
contoh output:
74777

pada perintah di FreeBSD:
$ stat -s file.txt
ls command example
gunakan perintah ls:
$ ls -lah fw8ben.pdf | awk '{ print $5}'

Sample output:
74K

dapat juga menggunakan perintah:
$ s=$(ls -lah idg.fw8ben.pdf | awk '{ print $5}')
$ echo $s

atau
$ s=$( stat -c %s fw8ben.pdf)
$ echo $s

Posted byalbertusdwiyoga at 11:16 PM 0 comments