weil-etale topology over local rings
Thoại trên mạng VOI IP (voice over IP - VOIP)
... các sản phẩm VoIP Mục tiêu cho các nhà phát triển khá đơn giản: bổ sung khả năng gọi điện thoại (cả truyền thoại lẫn báo hiệu) cho các mạng nền IP và kết nối chúng với mạng điện thoại công cộng ... dụng thoại. Phần lớn các ứng dụng VoIP sẽ là các hoạt động thời gian thực. Tuy nhiên, các dịch vụ thoại lu rồỉ truyền cũng đợc thi hành bằng cách sử dụng VoIP. Chẳng hạn, các thôn...
Ngày tải lên: 31/08/2012, 10:00
Wireless Local Area Networks
... only communicate among themselves Wireless Communications Wireless Local Area Networks 4 WLAN Components ã Minimal hardware needed for a WLAN Computer ISP Wireless network interface card Access ... printer sharing 18 Summary ã The wireless technology that attracts the most attention today Radio frequency (RF) wireless local area networks (WLANs) ã Wireless N...
Ngày tải lên: 13/09/2012, 10:52
Cisco Press 2000 - Voice over IP Fundamentals
... (earth) or a 41 Voice over IP Fundamentals Copyright Information Copyrightâ 2000 Cisco Press Cisco Press logo is a trademark of Cisco Systems, Inc. Published by: Cisco Press 201 West 103rd ... into the voice realm. They also act as a good primer for those in specific voice areas that want to brush up on various other voice- networking protocols. Chapter...
Ngày tải lên: 14/09/2012, 11:42
Implementing Voice Over IP
... PREFACE In general, voice transmission over the Internet protocol (IP) , or VoIP, means transmission of real-time voice signals and associated call control information over an IP- based (public or ... 67 6 VoIP Deployment in Enterprises 68 IP- Based Endpoints: Desktop and Conference Phones, 69 IP- PBX, IP Centrex, and IP- Based PBX Tie Lines, 71 IP- VPN and VoIP for Tele-Worker...
Ngày tải lên: 15/09/2012, 10:04
Tìm hiểu VOICE OVER IP
... 16 [VOICE OVER IP] CH NG I: T NG QUAN V VOIPƯƠ Ổ Ề 1. Gi i thi u chung v VoIP.ớ ệ ề Voice over Internet Protocol (VoIP) là m t công ngh cho phép truy n tho iộ ệ ề ạ s d ng giao th c m ng IP, ... nói (Voice Compression)ọ Page 8 [VOICE OVER IP] 3.2 B giao th c ộ ứ SIP. SIP: (Session Initiation Protocol) đ c phát tri n b i IETF ( Internetượ ể ở Engineering Task Force) MMUSIC...
Ngày tải lên: 09/10/2012, 16:40
Tài liệu Báo cáo " The total specialization of modules over a local ring" ppt
... specialization of modules over a local ring Dao Ngoc Minh ∗ , Dam Van Nhi Department of Mathematics, Hanoi National University of Education 136 Xuan Thuy Road, Hanoi, Vietnam Received 23 March ... 2009 Abstract. In this paper we introduce the total specialization of an finitely generated module over local ring. This total specialization preserves the Cohen-Ma...
Ngày tải lên: 13/02/2014, 03:20
Báo cáo "A NEW NUMERICAL INVARIANT OF ARTINIAN MODULES OVER NOETHERIAN LOCAL RINGS " pptx
... complete. VNU. JOURNAL OF SCIENCE, Mathematics - Physics. T.XXI, N 0 2 - 2005 A NEW NUMERICAL INVARIANT OF ARTINIAN MODULES OVER NOETHERIAN LOCAL RINGS Nguyen Duc Minh Department of Mathematics, Quy ... Co-Cohen-Macaulay modules and modules of generalized fractions, Comm. Algebra 226(1994), 2173-220 4. A new numerical invariant of Artinian Modules...
Ngày tải lên: 05/03/2014, 14:20
Đề tài " Geometric Langlands duality and representations of algebraic groups over commutative rings " pptx
... 95–143 Geometric Langlands duality and representations of algebraic groups over commutative rings By I. Mirkovi ´ c and K. Vilonen* 1. Introduction In this paper we give a geometric version of the ... and Langlands duality, preprint alg-geom/9511007, 1995. [GNO] P. Goddard, J. Nuyts, and D. Olive, Gauge Theories and Magnetic Change, Nuclear Phys. B 125 (19...
Ngày tải lên: 06/03/2014, 08:21
Báo cáo hóa học: " Research Article Construction and Iterative Decoding of LDPC Codes Over Rings for Phase-Noisy Channels ppt
... Communications and Networking Volume 2008, Article ID 385421, 9 pages doi:10.1155/2008/385421 Research Article Construction and Iterative Decoding of LDPC Codes Over Rings for Phase-Noisy Channels Sridhar ... the construction and iterative decoding of low-density parity-check (LDPC) codes for channels affected by phase noise. The LDPC code is b...
Ngày tải lên: 21/06/2014, 23:20
Báo cáo hóa học: " Research Article Structured LDPC Codes over Integer Residue Rings" doc
... including integer residue rings. Their codes are however unstructured. Structured LDPC codes, which include the family of finite geometry (FG) codes [5] and balanced incomplete block design (BIBD) codes ... Networking Volume 2008, Article ID 598401, 9 pages doi:10.1155/2008/598401 Research Article Structured LDPC Codes over Integer Residue Rings Elisa Mo and M...
Ngày tải lên: 21/06/2014, 23:20
Báo cáo toán học: "Linear Codes over Finite Chain Rings" doc
... Assertion (ii) follows from (i). 3 Linear Codes over Finite Chain Rings In this section, we introduce the basic notions of the theory of linear codes over finite chain rings. With respect to component-wise ... Linear codes over finite chain rings. In Optimal Codes and Related Topics, pages 116–126, Sozopol, Bulgaria, 1998. [21] T. Honold and I. Landjev. All Reed-Muller co...
Ngày tải lên: 07/08/2014, 06:20
decoding algorithms for algebraic geometric codes over rings
... decoding algorithms for algebraic geometric codes over finite fields to make them work for algebraic geometric codes over rings. In Chapter 3, the modification of the basic algorithm for algebraic geometric ... the 3 algorithms for decoding algebraic geometric codes over finite fields can be modified to decode algebraic geometric codes over rin...
Ngày tải lên: 13/11/2014, 09:08
lattices of minimum covolume in chevalley groups over positive characteristic local fields
Ngày tải lên: 13/11/2014, 11:18