Boston University

Latest Content From Boston University

Whitepaper: Decentralization, Hierarchies And Incentives: A Mechanism Design Perspective

by Boston UniversityJan 01, 2008

The comparative performance of these specific decentralized and centralized resource allocation systems were sought to be compared, on the basis of the extent of communication and information processing they entail, and the incentives of individual agents they give rise to. The purpose of this paper is to throw light on the costs and benefits of decentralization from an incentive standpoint and compare performance of different patterns of decentralization.

Whitepaper: Call Center Outsourcing: Coordinating Staffing Level and Service Quality

by Boston UniversityJan 01, 2008

This white paper elaborates the contracting issues in an outsourcing supply chain consisting of a user company and a call center that does outsourcing work for the user company. The call center makes two calculated decisions, how many agents to have and how much effort to exert to achieve service quality. The authors are interested in the contracts the user company can use to induce the call center to both staff and exert effort at levels that are best for the outsourcing supply chain.

Whitepaper: Academic Mentoring: How To Give It And How To Get It

by Boston UniversityJan 01, 2008

Students, trainees, research fellows, and junior faculty all benefit from the direction provided by academic mentors and research supervisors. The literature contains numerous reports on the importance of mentorship in helping facilitate the future success of trainees, documenting benefits such as more productive research careers, greater career satisfaction, better preparation in making career decisions, networking within a profession, and aiding in stress management.1-10 This Commentary describes several key points of advice both for individuals who mentor and those who receive mentoring. In some places, a mentor is an individual who is not the student?s direct clinical, academic, or research supervisor.

Whitepaper: On the Interaction Between TCP and the Wireless Channel in CDMA2000 Networks

by Boston UniversityJan 01, 2008

With advances in coding theory and cellular technology, the wireless channel need no longer be seen as an error-prone channel with constant low bandwidth. Instead, dynamic ""on-the-fly"" coding allows the channel to adapt to diverse noise conditions. The wok discussed in this paper, the authors conducted extensive active measurements on a large nationwide CDMA2000 1xRTT network in order to characterize the impact of both the Radio Link Protocol and more importantly, the wireless scheduler, on TCP. Measurements include standard TCP/UDP logs, as well as detailed RF layer statistics that allow observability into RF dynamics.

Whitepaper: How Well Can TCP Infer Network State?

by Boston UniversityJan 01, 2008

The Transmission Control Protocol (TCP) has been the protocol of choice for many Internet applications requiring reliable connections. The design of TCP has been challenged by the extension of connections over wireless links. The goal is to improve or readily exploit this predictive power to enable TCP (or variants) to perform well in generalized network settings. To that end, University uses Maximum Likelihood Ratio tests to evaluate TCP as a detector/estimator.

Whitepaper: Effectiveness of Loss Labeling in Improving TCP Performance in Wired/Wireless Networks

by Boston UniversityJan 01, 2008

The Transmission Control Protocol (TCP) has been the dominant transport mechanism for reliable data transfer over the Internet. In this paper the researchers study the fundamental gains and limits of explicit loss labeling techniques employed to empower TCP in hybrid wired/wireless networks. The filter is re-instantiated to measure RTT and augment it with history information so as to distinguish between congestion and wireless losses, specifically to empower TCP NewReno in wired/wireless networks.

Whitepaper: Providing Soft Bandwidth Guarantees Using Elastic TCP-Based Tunnels

by Boston UniversityJan 01, 2008

This paper presents a framework for providing soft bandwidth-guarantees over a best-effort network. Such a guarantee is provided through the use of an elastic TCP-based tunnel running between ITMs. The target bandwidth could be dynamically adjusted to meet the needs of applications. The elasticity of the established tunnel is achieved by adjusting the number of open TCP connections between ITMs to a quiescent number, large enough to push back against crosstraffic.

Whitepaper: Mentoring And Developmental Networks In The New Career Context

by Boston UniversityJan 01, 2008

This research paper from Boston University reviews the evolution of mentoring in the Careers field. As an important vehicle for personal learning and career advancement, mentoring continues to warrant scrutiny, particularly in light of recent changes in the career context. The paper overview research related to key topics, such as relationship functions and phases, types of mentoring and other developmental relationships, associated career and organizational antecedents and outcomes, and the complexities of cross-gender, cross-race, and cross-cultural relationships.

Whitepaper: Graded Channel Reservation With Path Switching in Ultra High Capacity Networks

by Boston UniversityJan 01, 2008

Network backbones are often presumed to be over-provisioned. However, the emergence of new applications with unprecedented bandwidth requirements is likely to quickly change the current state of affairs. This paper introduces a new algorithmic framework for advanced channel reservation in ultra high speed networks, called Graded Channel Reservation (GCR). GCR allows users to specify minimum bandwidth and duration requirements for their connections. GCR returns the highest graded path, selected according to a general, multi-criteria optimization objective.