Search results for: Wei K. Tsai

Items from 1 to 13 out of 13 results

article

A Lexicographic Optimization Framework to the Flow Control Problem

Jordi Ros, Wei K Tsai

IEEE Transactions on Information Theory > 2010 > 56 > 6 > 2875 - 2886

In this paper, a theory of lexicographic optimization for convex and compact feasible sets is presented. Existence, globality, unimodality, and uniqueness of the solution to the problem are proved. Also, necessary and sufficient conditions are derived that establish the relationship between the lexicographic problem and the maxmin problem. This framework is shown to be useful in the problem of designing...

chapter

Using Advertised Rate for Multi-Path Relative Maxmin Routing

Dan-Han Tsai, Wei K. Tsai, Pohao Huang

2007 4th IEEE Consumer Communications and Networking Conference > 474 - 478

2007 4th IEEE Consumer Communications and Networking Conference

chapter

Transporting audio over wireless ad hoc networks: experiments & new insights

C.-K. Toh, Wei K. Tsai, Victor O.K. Li, A.D. Scott, more

14th IEEE Proceedings on Personal, Indoor and Mobile Radio Communications, 2003. PIMRC 2003. > 1 > 772 - 777 Vol.1

14th IEEE 2003 International Symposium on Personal, Indoor and Mobile Radio Communications. Proceedings

Current efforts on ad hoc wireless network research are focused more on routing and multicasting protocols. However, there is an increasing need to understand what sort of media could be transported over wireless ad hoc networks other than data. Existing research on multimedia wireless communications often addresses broadband wireless networks with a connection-oriented backbone. In this paper, we...

article

Robust controller design for a space station using ellipsoidal set-theoretic bounds

Alexander G. Parlos, Wei K. Tsai, John W. Sunkel

Control Engineering Practice > 2002 > 10 > 11 > 1179-1197

Operational concerns in systems require that some variables remain within strict limits in the presence of significant parameter variations and other uncertainties. An attitude control and momentum management system is developed for a space station, that is robust to large changes in mass properties while keeping certain system inputs and states within strict bounds. The problem is solved using ellipsoidal...

article

Thresholds: Revisit the Strings versus Clouds Debate for the Internet Architecture. Part I: Control, Scalability, and QoS

Wei K. Tsai, Mahadevan Iyer, Jordi Ros

Journal of Network and Systems Management > 2002 > 10 > 2 > 135-141

article

Thresholds: Revisit the Strings Versus Clouds Debate for the Internet Architecture, Part II: QoS, Control, Management, and TCP

Wei K. Tsai, Mahadevan Iyer, Jordi Ros

Journal of Network and Systems Management > 2002 > 10 > 3 > 267-275

The clouds (IP) versus strings (connection-oriented) debate over the Internet architecture is reexamined. Controllability and observability are shown to be the key to the performance (QoS) of the networks. The clouds architecture treats the network as a black box, making it uncontrollable and unobservable; in contrast, the strings architecture was designed to be a controllable and observable structure...

article

A dynamic traffic assignment model with traffic-flow relationships

R. Jayakrishnan, Wei K. Tsai, Anthony Chen

Transportation Research Part C > 1995 > 3 > 1 > 51-72

Conventional traffic assignment methods assume that the origin-destination (OD) demand is uniformly distributed over time to estimate the traffic pattern. This assumption does not hold for modeling peak periods of congestion in which the OD demand is time varying. In this paper, we present a dynamic traffic assignment model with traffic-flow relationships based on a bi-level optimization framework...

article

Fast parallel hierarchical aggregation/disaggregation algorithms for multistage optimization problems and shortest path problems

Wei K. Tsai, Garng M. Huang, John K. Antonio

American Control Conference > 1989 > 26 > 1789 - 1794

American Control Conference

It appears that all of the known algorithms for solving multistage optimization problems are based explicitly on standard dynamic programming concepts. Such algorithms are inherently serial in the sense that computation must be completed at the current stage before meaningful computation can begin at the next stage. In this paper we present a technique which recursively divides the original problem...

article

Fast Parallel Iterative Aggregation Methods for Simulation of Dynamical Systems

Wei K. Tsai, Garng Huang, Wei Lu

01989 American Control Conference > 1989 > 2217 - 2222

1989 American Control Conference

A novel iterative aggregation algorithm for numerical simulations of dynamic systems is proposed and analyzed. The algorithm exploits the special structures of the linear equation problem resulting from the discretization of the dynamic system, and of the aggregation/disaggregation procedures. The algorithm has a time complexity of (I(q)+2M(q)+3)logN time complexity in solving linear systems with...

article

Fast Parallel Hierarchical Aggregation/Disaggregation Algorithms for Multistage Optimization Problems and Shortest Path Problems

Wei K. Tsai, Garng M. Huang, John K. Antonio

01989 American Control Conference > 1989 > 1789 - 1794

1989 American Control Conference

article

Fast parallel iterative aggregation methods for simulation of dynamical systems

Wei K. Tsai, Garng Huang, Wei Lu

American Control Conference > 1989 > 26 > 2217 - 2222

American Control Conference

A novel iterative aggregation algorithm for numerical simulations of dynamic systems is proposed and analyzed. The algorithm exploits the special structures of the linear equation problem resulting from the discretization of the dynamic system, and of the aggregation/disaggregation procedures. The algorithm has a time complexity of (I(q) + 2M(q) + 3) log N time complexity in solving linear systems...

article

Distributed aggregation/disaggregation algorithms for optimal routing in data networks

Wei K. Tsai, G. Huang, John K. Antonio, Wei-T. Tsai

American Control Conference > 1988 > 25 > 1799 - 1804

American Control Conference

A new gradient projection algorithm using iterative aggregation and disaggregation is proposed and analyzed for box-constrained minimization problems. In a variation of the distributed computation model, the algorithm is shown to converge. As an important application, we also show how the algorithm is applied to optimal routing in a large interconnected data communication network. The aggregation/disaggregation...

article

Distributed Aggregation/Disaggregation Algorithms for Optimal Routing in Data Networks

Wei K. Tsai, G. Huang, John K. Antonio, Wei-T. Tsai

01988 American Control Conference > 1988 > 1799 - 1804

1988 American Control Conference

Filter options

Publication date

Set your own date range

INFONA - science communication portal

Search results for: Wei K. Tsai

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Content availability

Publication type

Keywords

Data set

Journal

Reporting an error / abuse

Sending the report failed

Accessibility options