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Hasil Pencarian

Ditemukan 14 dokumen yang sesuai dengan query
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Martin, James
Upper Saddle River: Prentice Hall PTR, 1997
621.382 MAR a
Buku Teks  Universitas Indonesia Library
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"Contents :
- Prologue
- Section 1: ATM Architecture
- Chapter 1.1 An Overview of ATM
- Chapter 1.2 ATM Physical Layer and ATM Signaling
- Chapter 1.3 Switch Architectures and Traffic Scheduling
- Chapter 1.4 ATM Services and Associated Adaptation Layers
- Section 2: ATM Management
- Chapter 2.1 An Overview of Network Management for ATM
- Chapter 2.2 Traffic Control in ATM Networks
- Chapter 2.3 Aspects of ATM Traffic Management
- Chapter 2.4 ATM Adaptation-Layer Switching
- Chapter 2.5 ATM Performance Testing and QoS Management
- Section 3: ATM Integration
- Chapter 3.1 ATM LANs
- Chapter 3.2 Multiprotocol Integration with ATM
- Chapter 3.3 Wireless ATM
- Section 4: ATM in the Field
- Chapter 4.1 Integrating ATM Backbones with High-Speed Ethernet at the
Edge
- Chapter 4.2 Voice over ATM
- Chapter 4.3 Techniques for Delivering Stored Video Streams over ATM
- Chapter 4.4 Top Ten Reasons for Using ATM
- Chapter 4.5 Successful Implementations of ATM "
Chicago: International Engineering Consortium, 2000
e20452807
eBooks  Universitas Indonesia Library
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Dicky Rahmad
"Pentransmisian gambar pada jaringan telekomunikasi umum (public telecommunication network) merupakan hal yang sulit untuk dilakukan. Hal ini disebabkan karena selain dibutuhkan kapasitas yang sangat besar, laju bit pada gambar merupakan nilai yang berubah-ubah (VBR), sehingga sulit untuk menjaga efisiensi saluran komunikasi dengan tetap memelihara kualitas keluaran di sisi penerima. ATDM merupakan metode multipleksing yang setiap saat mendefinisikan kembali panjang frame-nya, sehingga cocok digunakan untuk media yang bersifat VBR.
Tugas skripsi ini adalah untuk menganalisis unjuk kerja ATDM pada pentransmisian gambar. Hal pertama yang dilakukan adalah memodelkan suatu bentuk si Val gambar yang telah dikodekan, untuk menentukan parameter-parameter ATDM. Setelah itu baru dapat dibuat perhitungan antrian untuk mendapatkan unjuk kerja ATDM yang berupa nilai kemungkinan loss berbanding dengan ukuran bufer."
Depok: Fakultas Teknik Universitas Indonesia, 1997
S39426
UI - Skripsi Membership  Universitas Indonesia Library
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Banyu Nurinsan Putewa
"Sistem hybrid berupa penggabungan dua jenis sumber kelistrikan sangat dibutuhkan untuk memenuhi kebutuhan kelistrikan pada saat ini. Hal ini dikarenakan meningkatnya kebutuhan listrik masyarakat umum dan terbatasnya daya generator yang bekerja. Namun, masalah kestabilan tegangan menjadi salah satu faktor yang perlu dicarikan solusi ketika menggunakan sistem hybrid. Dalam skripsi ini akan diajukan simulasi sistem dengan menggunakan pengendali agar tegangan pada sisi beban tetap stabil.

Hybrid system contains two different source of electricity. It is very usefull for today's need, because the electricity's demand is increasing everyday and the generator have the limit of its power. One of the problem is the stability, hybrid system has a bad voltage's stability sometimes. The voltage's controller will be described in this final project, so that the voltage's stability in the load's side will keep steady."
Depok: Fakultas Teknik Universitas Indonesia, 2014
S56809
UI - Skripsi Membership  Universitas Indonesia Library
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Ralfi Wibowo Rachmad
"DC-DC Converter yang umum digunakan adalah buck converter dengan kemampuannya untuk dapat menurunkan tegangan masukan ke beberapa level tegangan keluaran tergantung terhadap nilai duty cycle yang diberikan kepada rangkaian. Buck converter akan menggunakan metode switching dalam pengoperasiannya dan akan memiliki efisiensi konversi daya yang lebih baik daripada regulator linear. Topologi utama pada aplikasi rangkaian buck converter adalah asynchronous buck converter dan synchronous buck converter. Perbedaan kedua topologi terletak pada komponen low side switch, topologi asynchronous akan memanfaatkan dioda sedangkan topologi synchronous memanfaatkan MOSFET. Kedua jenis topologi akan memiliki keunggulan dan kekurangannya masing masing dari sisi performa maupun kompleksitas penyusunan rangkaian. Pada penelitian ini, akan dilakukan rancang bangun buck converter dengan topologi asynchronous dan topologi synchronous. Hasil rangkaian akan dianalisa performanya, khususnya aspek efisiensi konversi rangkaian dalam beberapa kondisi operasi converter. Dari hasil penelitian didapatkan kedua jenis topologi memiliki efisiensi yang cenderung lebih baik ketika ditingkatkan arus operasinya, dimana rangkaian synchronous memiliki efisiensi yang lebih baik pada duty cycle rendah dan pada duty cycle yang tinggi kedua topologi memiliki efisiensi yang hampir serupa.  Rangkaian juga memiliki potensi pengembangan untuk pengisian atau charging baterai, khsusunya baterai lithium-ion 18650 dengan kemampuannya melakukan pengaturan tegangan dalam kondisi arus operasi yang konstan.
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One kind of DC-DC converter that have been widely used is a buck converter with its ability to lower the input voltage to a desired output voltage depending on the value of the duty cycle given to the circuit. Buck converter will utilize switching method on its operation and will have a better efficiency than a linear regulator. The main topology in the application of a buck converter is an asynchronous buck converter and synchronous buck converter. The difference between the two topologies lies in its use of component in the low side switch, asynchronous buck converter make use of a diode as the low side switch whereas synchronous buck converter uses a MOSFET. These two topologies have its own advantages and disadvantages from a performance point of view or from a design complexity. In this research, buck converter with asynchronous and synchronous topologies will be designed. The design prototypes will be analysed, especially in the aspect of power conversion efficiency. From the results obtained in this research, the two topologies have a better overall efficiency in a higher current operation, with the synchronous have a better overall efficiency at lower duty cycle range and at the higher duty cycle range, the two topologies have an almost similar overall efficiency. The buck converters have a potential integration with the application of battery charging system, especially 18650 lithium-ion battery with its ability to regulate voltage on a constant current output."
Depok: Fakultas Teknik Universitas Indonesia, 2022
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UI - Skripsi Membership  Universitas Indonesia Library
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Abdul Kadir
Jakarta : Djambatan, 1986
621.316 ABD m
Buku Teks  Universitas Indonesia Library
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Josita Mayadewi Soeyono
"[ABSTRAK
Tesis ini membahas scaffolding dalam interaksi tutor-pemelajar + pemelajarpemelajar
secara asinkronis dalam forum diskusi tutorial online Writing 1
Universitas Terbuka berdasarkan aspek manajemen tugas, proses balikan, dan
manajemen dalam menjalin ikatan sosial. Penelitian ini adalah studi kasus yang
bersifat naturalistik. Data yang digunakan berupa percakapan asinkronis,
kuesioner dan wawancara. Hasil analisis membuktikan bahwa pemelajar dapat
membangun pengetahuannya secara kolaboratif melalui scaffolding dalam
pemelajaran bahasa yang menggunakan media komputer (CMC) secara
asinkronis. Namun demikian, kurangnya respon terhadap pertanyaan dan balikan
yang dikirimkan, serta respon rekan yang tidak mengarahkan pemelajar untuk
meningkatkan kemampuannya menjadikan interaksi ini tidak seluruhnya
mengandung scaffolding. Hal ini dapat disebabkan oleh: tutor yang cenderung
untuk menunda memberikan respon, respon rekan tidak mengandung balikan, dan
pemelajar yang menunggu respon tutor karena tutor diyakini memiliki kompetensi
lebih baik dibandingkan rekan, serta fitur interaksi secara asinkronis yang
memungkinkan respon diberikan secara tidak simultan atau bahkan diabaikan.
Hasil analisis juga menunjukkan bahwa tidak semua pemelajar memanfaatkan
scaffolding untuk segera merevisi tulisannya, karena kurang jelasnya instruksi
yang diberikan maupun fitur interaksi yang berlangsung secara asinkronis.

ABSTRACT
This thesis focuses on scaffolding in tutor-learner + learner-learner interaction
asynchronously on Writing 1 online tutorial discussion forum at Open University
based on the following aspects: task management, feedback process, and social
cohesiveness. The research is a naturalistic case study. Data are collected through
asynchronous chat records, questionnaires, and interviews. The analysis results
prove learners are able to construct knowledge in collaboration through
scaffolding in language learning using asynchronous computer-mediated
communication (CMC). However, scaffolding is not found in the entire
interaction since there is a lack of responses towards questions and feedback, and
peers? responses do not guide learners to substantial improvement in performance.
The reasons of these are: tutor tends to delay in responding, there is often no
feedback in peers? responses, learners? belief in tutor?s feedback instead of that of
their peers, and a time-delayed frame feature of interaction which makes it
possible for users not to send messages simultaneously or simply to ignore
responses. The analysis also shows that only a few of learners are using
scaffolding to revise their writings immediately. There is no clear instructions
about revising their writings and the asynchronous interaction feature are two
reasons that make scaffolding less effective.;This thesis focuses on scaffolding in tutor-learner + learner-learner interaction
asynchronously on Writing 1 online tutorial discussion forum at Open University
based on the following aspects: task management, feedback process, and social
cohesiveness. The research is a naturalistic case study. Data are collected through
asynchronous chat records, questionnaires, and interviews. The analysis results
prove learners are able to construct knowledge in collaboration through
scaffolding in language learning using asynchronous computer-mediated
communication (CMC). However, scaffolding is not found in the entire
interaction since there is a lack of responses towards questions and feedback, and
peers’ responses do not guide learners to substantial improvement in performance.
The reasons of these are: tutor tends to delay in responding, there is often no
feedback in peers’ responses, learners’ belief in tutor’s feedback instead of that of
their peers, and a time-delayed frame feature of interaction which makes it
possible for users not to send messages simultaneously or simply to ignore
responses. The analysis also shows that only a few of learners are using
scaffolding to revise their writings immediately. There is no clear instructions
about revising their writings and the asynchronous interaction feature are two
reasons that make scaffolding less effective., This thesis focuses on scaffolding in tutor-learner + learner-learner interaction
asynchronously on Writing 1 online tutorial discussion forum at Open University
based on the following aspects: task management, feedback process, and social
cohesiveness. The research is a naturalistic case study. Data are collected through
asynchronous chat records, questionnaires, and interviews. The analysis results
prove learners are able to construct knowledge in collaboration through
scaffolding in language learning using asynchronous computer-mediated
communication (CMC). However, scaffolding is not found in the entire
interaction since there is a lack of responses towards questions and feedback, and
peers’ responses do not guide learners to substantial improvement in performance.
The reasons of these are: tutor tends to delay in responding, there is often no
feedback in peers’ responses, learners’ belief in tutor’s feedback instead of that of
their peers, and a time-delayed frame feature of interaction which makes it
possible for users not to send messages simultaneously or simply to ignore
responses. The analysis also shows that only a few of learners are using
scaffolding to revise their writings immediately. There is no clear instructions
about revising their writings and the asynchronous interaction feature are two
reasons that make scaffolding less effective.]"
Depok: Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2014
T43165
UI - Tesis Membership  Universitas Indonesia Library
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"Contents :
- The Future of ATM and Broadband Networking: 2000 to 2010
- Consortium Affiliated Universities
- International Engineering Consortium
- Table of Contents
- CHAPTER 1: INTRODUCTION
- CHAPTER 2: ARCHITECTURES AND PRODUCTS FOR OFFICE
CONNECTIVITY
- CHAPTER 3: BUSINESS CAMPUS BACKBONE NETWORKS
- CHAPTER 4: MODERNIZING UNIVERSITY CAMPUSES WITH ATM
NETWORKS
- CHAPTER 5: HIGH-BANDWIDTH RESIDENTIAL CONNECTIVITY
- CHAPTER 6: METROPOLITAN BACKBONES
- CHAPTER 7: WIDE AREA NETWORKING
- CHAPTER 8: GLOBAL HIGH-BANDWIDTH LINKS
- CHAPTER 9: FUTURE TRANSPORT DIRECTIONS
- CHAPTER 10: FUTURE SWITCHING DIRECTIONS
- CHAPTER 11: THE INTERNET AND SONET OVER GIGABIT ROUTERS
- CHAPTER 12: INDUSTRY OPINION A DELPHI STUDY OF THE FUTURE OF
AND BROADBAND NETWORKING
- CHAPTER 13: INVESTMENT OBSTACLES TO HIGH-BANDWIDTH
TRANSMISSION
- CHAPTER 14: FUTURE NETWORK REQUIREMENTS FOR WORKER
PRODUCTIVITY
- CHAPTER 15: FUTURE OF ATM AND BROADBAND RESEARCH
CONCLUSIONS
- APPENDICES
- APPENDIX A: SOURCES
- APPENDIX B: Delphi Questionnaires
- APPENDIX C: Survey Response Statistics "
Chicago: Professional Education International, 1998
e20448216
eBooks  Universitas Indonesia Library
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Kalamullah Ramli
"Banyaknya Jenis layanan yang didukung oleh Asynchronous Transfer Mode (ATM) menyebabkan trafik yang dihasilkan menjadi sangat bursty pada titik dimana proses call admission control dilakukan. Untuk memodelkan trafik tersebut, umumnya digunakan model kedatangan Poisson and 2-State Markov Modulated Poisson Process (MMPP-2).
Pada penelitian ini dipelajari karakteristik dari kedua model tersebut berdasarkan tingkat burstiness yang ditinjau dari dua buah pendekatan: pendekatan interarrival times dan pendekatan counting process. Berdasarkan kedua pendekatan tersebut, model kedatangan akan dibandingkan berdasarkan beberapa parameter seperti PMR (Peak to Mean Ration), kuadrat koefisien variasi, Index Dispersion of Count dan parameter Hurst.
Dari hasil analisa dan simulasi didapatkan bahwa ternyata model kedatangan MMPP-2 lebih cocok untuk digunakan sebagai model trafik call admission control (CAC) pada jaringan ATM."
Depok: Fakultas Teknik Universitas Indonesia, 1999
LP-pdf
UI - Laporan Penelitian  Universitas Indonesia Library
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