Thông báo

**taolao** · 09-05-2008, 05:43

Nguyên văn bởi 207.207 Xem bài viết

taolao lấy giúp mình cái này với :
Study of a non-intrusive method for measuring the end-to-end capacity and useful bandwidth of a pathGoutelle, M.; Primet, P.V.-B.
Communications, 2004 IEEE International Conference on
Volume 4, Issue , 20-24 June 2004 Page(s): 1872 - 1876 Vol.4
Digital Object Identifier 10.1109/ICC.2004.1312845
Summary: Studies and tools development for applications sensitive to data rates is a very active research field. Tools for measuring the end-to-end performance of a link between two hosts are very important for distributed application performance optimization. Bandwidth evaluation methods aim to provide a realistic view of the raw capacity but also of the dynamic behaviour of the interconnection that may be very useful to evaluate the time of bulk data transfer. Existing methods differs according to the measurements strategies and the evaluated metric. This paper analyses the available bandwidth measurements and the total capacity measurements approaches. None of the proposed tools permit to evaluate both metrics while giving an overview of the link topology. An approach using a hop-by-hop packet pair method and a fine analysis of the measurements can provide such informations. The principles of this hop-by-hop measurement of the capacity and available bandwidth method are exposed in this paper. This proposition has been validated in simulation, then implemented in Linux and validated experimentally. We compared our method with the others to define its limits and the potential utilisations on the developed tool.
cảm ơn nhiều nhé

Vào đây lấy nhé!

**ainguyen** · 11-05-2008, 16:19

chao cac ban

Bạn nào có thể dơn tai lieu duoc tu ieee ,lam ơn down giùm mình :"Network services definition and deployment in a differentiated services architecture" được không? Mình cảm ơn các bạn nhiều

**ginkgo_ev** · 12-05-2008, 23:26

Bạn taolao ơi down giùm tớ cái này nhé.
Cảm ơn bạn nhiều.

Link: http://ieeexplore.ieee.org/Xplore/lo...3B+Cihlar%2C+J.

Development of a robust haze removal algorithm: assessment using temporally invariant targetsYing Zhang; Guindon, B.; Cihlar, J.
Geoscience and Remote Sensing Symposium, 2002. IGARSS apos;02. 2002 IEEE International
Volume 1, Issue , 2002 Page(s): 101 - 103 vol.1
Digital Object Identifier 10.1109/IGARSS.2002.1024954
Summary: A robust haze-removal algorithm based on the Haze Optimized Transformation (HOT) is applied to ETM+ imagery. Its effectiveness is evaluated using temporally invariant targets identified in a multi-temporal data set of scenes of WRS-2 Path15/Row29. In the data set, clear scenes serve as 'benchmarks' against which the effectiveness of haze removal can be assessed. In the quantitative assessment, two hundred coniferous forest patches were randomly sampled and served as 'benchmark' targets since they exhibit both spatial and temporal radiometric invariance on clear data. Comparisons were made of the radiometric characteristics of the patch population in hazy vs. de-hazed and de-hazed vs. clear image pairs. Results show that image contaminated by low to moderate haze can be significantly improved. Reductions of 20 to 90% in intra-scene radiometric dispersion have been achieved with the de-hazed scenes exhibiting residual dispersion levels comparable to those of the benchmark scenes.

**taolao** · 13-05-2008, 21:25

Development of a robust haze removal algorithm: assessment using temporally invariant targets

Network services definition and deployment in a differentiated services architecture

Download

**meongoc04** · 17-05-2008, 22:06

Bác taolao có thể lấy giùm e mấy tiêu chuẩn sau đây được ko:
1. IEEE Std 1048-1990: Hướng dẫn của IEEE cho việc bảo vệ chạm đất các đường dây tải điện - IEEE guide for protective grounding of power lines.
http://ieeexplore.ieee.org/Xplore/lo...799.pdf?temp=x
2. IEEE Std 1036-1992: Hướng dẫn của IEEE cho việc ứng dụng các tụ công suất bù ngang - IEEE guide for application of shunt power capacitors.
http://ieeexplore.ieee.org/Xplore/lo...735.pdf?temp=x
3. IEEE Std 1019-2004 (Revision of IEEE Std 1019-1991): Khuyến nghị của IEEE cho các thông số kỹ thuật của cáp chôn ngầm - Cách điện Polypropylene - IEEE Recommended Practice for Specifying Electric Submersible Pump Cable-Polypropylene Insulation
http://ieeexplore.ieee.org/Xplore/lo...number=1425767
4. IEEE Std 1124-2003: Hướng dẫn cho việc phân tích và xác định sóng hài một chiều của hệ thống truyền dẫn HVDC - IEEE guide for the analysis and definition of DC-side harmonic performance of HVDC transmission systems
http://ieeexplore.ieee.org/Xplore/lo...number=1237536

Thanks bác nhiều

**taolao** · 19-05-2008, 09:15

IEEE guide for protective grounding of power lines.
IEEE guide for application of shunt power capacitors.
IEEE Recommended Practice for Specifying Electric Submersible Pump Cable-Polypropylene Insulation
IEEE guide for the analysis and definition of DC-side harmonic performance of HVDC transmission systems

Download

**thotran** · 20-05-2008, 11:24

Nguyên văn bởi jefflieu Xem bài viết

Nhieu lam, chiu kho' search di roi chi ra chinh xac tai lieu na`o roi Jeff down cho ....

Bac down giup minh tai lieu nay nhe, minh dang can lam, gui qua mail dum minh. Chan thanh cam on
my mail: quoc_tho2003@yahoo.com

link: http://ieeexplore.ieee.org/xpl/freea...rnumber=502360
Doubly fed induction generator using back-to-back PWM convertersand its application to variable-speed wind-energy generation
Pena, R. Clare, J.C. Asher, G.M.
Dept. of Electr. & Electron. Eng., Nottingham Univ.;

This paper appears in: Electric Power Applications, IEE Proceedings -
Publication Date: May 1996
Volume: 143, Issue: 3
On page(s): 231-241
ISSN: 1350-2352
References Cited: 21
CODEN: IEPAER
INSPEC Accession Number: 5292558
Posted online: 2002-08-06 20:26:09.0

Abstract
The paper describes the engineering and design of a doubly fed induction generator (DFIG), using back-to-back PWM voltage-source converters in the rotor circuit. A vector-control scheme for the supply-side PWM converter results in independent control of active and reactive power drawn the supply, while ensuring sinusoidal supply currents. Vector control of the rotor-connected converter provides for wide speed-range operation; the vector scheme is embedded in control loops which enable optimal speed tracking for maximum energy capture from the wind. An experimental rig, which represents a 7.5 kW variable speed wind-energy generation system is described, and experimental results are given that illustrate the excellent performance characteristics of the system. The paper considers a grid-connected system; a further paper will describe a stand-alone system

**meongoc04** · 21-05-2008, 19:41

**207.207** · 22-05-2008, 17:17

Nhờ download tài liệu IEEEXPLORE

Bạn Taolao oi giúp minh cái này với :
Measuring asymmetric link bandwidths in Internet using a multi-packet delay model
Yu Lin; Haitao Wu; Shiduan Cheng; Wenyan Wang; Chonggang Wang
Communications, 2003. ICC apos;03. IEEE International Conference on
Volume 3, Issue , 11-15 May 2003 Page(s): 1601 - 1605 vol.3
Digital Object Identifier 10.1109/ICC.2003.1203872
Summary: Accurate measurement of network bandwidth is crucial for many flexible Internet applications and protocols. Based on a new multi-packet delay model, this paper presents a new algorithm called ALBP (asymmetric link bandwidth probing) to measure each hop's link bandwidth in both directions in an IP network, and uses the kernel density estimator to produce a final estimate. Compared with previous techniques, ALBP can eliminate (at least partially) the errors introduced by ICMP replies through the use of interarrival time of two probing packets, and avoid the problem of error accumulation. Simulation results show that ALBP is usually more accurate than both one-packet and packet tailgating techniques, and the bandwidth consumption of ALBP is close to that of packet tailgating.
Cảm ơn nhiều nhiều

**thotran** · 23-05-2008, 13:54

Wind Energy

Bac down giup minh tai lieu nay nhe, minh dang can lam, gui qua mail dum minh. Chan thanh cam on
my mail: quoc_tho2003@yahoo.com

link: http://ieeexplore.ieee.org/xpl/freea...rnumber=502360
Doubly fed induction generator using back-to-back PWM convertersand its application to variable-speed wind-energy generation
Pena, R. Clare, J.C. Asher, G.M.
Dept. of Electr. & Electron. Eng., Nottingham Univ.;

This paper appears in: Electric Power Applications, IEE Proceedings -
Publication Date: May 1996
Volume: 143, Issue: 3
On page(s): 231-241
ISSN: 1350-2352
References Cited: 21
CODEN: IEPAER
INSPEC Accession Number: 5292558
Posted online: 2002-08-06 20:26:09.0

Abstract
The paper describes the engineering and design of a doubly fed induction generator (DFIG), using back-to-back PWM voltage-source converters in the rotor circuit. A vector-control scheme for the supply-side PWM converter results in independent control of active and reactive power drawn the supply, while ensuring sinusoidal supply currents. Vector control of the rotor-connected converter provides for wide speed-range operation; the vector scheme is embedded in control loops which enable optimal speed tracking for maximum energy capture from the wind. An experimental rig, which represents a 7.5 kW variable speed wind-energy generation system is described, and experimental results are given that illustrate the excellent performance characteristics of the system. The paper considers a grid-connected system; a further paper will describe a stand-alone system

**taolao** · 23-05-2008, 16:39

Nguyên văn bởi 207.207 Xem bài viết

Bạn Taolao oi giúp minh cái này với :
Measuring asymmetric link bandwidths in Internet using a multi-packet delay model
Yu Lin; Haitao Wu; Shiduan Cheng; Wenyan Wang; Chonggang Wang
Communications, 2003. ICC apos;03. IEEE International Conference on
Volume 3, Issue , 11-15 May 2003 Page(s): 1601 - 1605 vol.3
Digital Object Identifier 10.1109/ICC.2003.1203872
Summary: Accurate measurement of network bandwidth is crucial for many flexible Internet applications and protocols. Based on a new multi-packet delay model, this paper presents a new algorithm called ALBP (asymmetric link bandwidth probing) to measure each hop's link bandwidth in both directions in an IP network, and uses the kernel density estimator to produce a final estimate. Compared with previous techniques, ALBP can eliminate (at least partially) the errors introduced by ICMP replies through the use of interarrival time of two probing packets, and avoid the problem of error accumulation. Simulation results show that ALBP is usually more accurate than both one-packet and packet tailgating techniques, and the bandwidth consumption of ALBP is close to that of packet tailgating.
Cảm ơn nhiều nhiều

Download here

**taolao** · 23-05-2008, 16:43

Nguyên văn bởi thotran Xem bài viết

Bac down giup minh tai lieu nay nhe, minh dang can lam, gui qua mail dum minh. Chan thanh cam on
my mail: quoc_tho2003@yahoo.com

link: http://ieeexplore.ieee.org/xpl/freea...rnumber=502360
Doubly fed induction generator using back-to-back PWM convertersand its application to variable-speed wind-energy generation
Pena, R. Clare, J.C. Asher, G.M.
Dept. of Electr. & Electron. Eng., Nottingham Univ.;

Download here

**thotran** · 23-05-2008, 21:50

Cam on ban nhieu lam.

**thotran** · 23-05-2008, 21:51

Cam on ban da giup minh
Cam on rat nhieu nha!!!!!

**haphung** · 26-05-2008, 03:54

ieeexplore.ieee.org/iel5/31/23596/01086263.pdf?arnumber=1086263

em rất cần tham khảo tài liệu này. bác làm down júp em với
em rất cảm ơn!

Thông báo

download từ ieee

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Về tác giả

Bài viết mới nhất