Architecture, design, and modeling of the OPSnet asynchronous optical packet switching node

An all-optical packet-switched network supporting multiple services represents a long-term goal for network operators and service providers alike. The EPSRC-funded OPSnet project partnership addresses this issue from device through to network architecture perspectives with the key objective of the design, development, and demonstration of a fully operational asynchronous optical packet switch (OPS) suitable for 100 Gb/s dense-wavelength-division multiplexing (DWDM) operation. The OPS is built around a novel buffer and control architecture that has been shown to be highly flexible and to offer the promise of fair and consistent packet delivery at high load conditions with full support for quality of service (QoS) based on differentiated services over generalized multiprotocol label switching

Advanced Radio Resource Management for Multi Antenna Packet Radio Systems

In this paper, we propose fairness-oriented packet scheduling (PS) schemes with power-efficient control mechanism for future packet radio systems. In general, the radio resource management functionality plays an important role in new OFDMA based networks. The control of the network resource division among the users is performed by packet scheduling functionality based on maximizing cell coverage and capacity satisfying, and certain quality of service requirements. Moreover, multiantenna transmit-receive schemes provide additional flexibility to packet scheduler functionality. In order to mitigate inter-cell and co-channel interference problems in OFDMA cellular networks soft frequency reuse with different power masks patterns is used. Stemming from the earlier enhanced proportional fair scheduler studies for single-input multiple-output (SIMO) and multiple-input multipleoutput (MIMO) systems, we extend the development of efficient packet scheduling algorithms by adding transmit power considerations in the overall priority metrics calculations and scheduling decisions. Furthermore, we evaluate the proposed scheduling schemes by simulating practical orthogonal frequency division multiple access (OFDMA) based packet radio system in terms of throughput, coverage and fairness distribution among users. As a concrete example, under reduced overall transmit power constraint and unequal power distribution for different sub-bands, we demonstrate that by using the proposed power-aware multi-user scheduling schemes, significant coverage and fairness improvements in the order of 70% and 20%, respectively, can be obtained, at the expense of average throughput loss of only 15%.Comment: 14 Pages, IJWM

LPDQ: a self-scheduled TDMA MAC protocol for one-hop dynamic lowpower wireless networks

Current Medium Access Control (MAC) protocols for data collection scenarios with a large number of nodes that generate bursty traffic are based on Low-Power Listening (LPL) for network synchronization and Frame Slotted ALOHA (FSA) as the channel access mechanism. However, FSA has an efficiency bounded to 36.8% due to contention effects, which reduces packet throughput and increases energy consumption. In this paper, we target such scenarios by presenting Low-Power Distributed Queuing (LPDQ), a highly efficient and low-power MAC protocol. LPDQ is able to self-schedule data transmissions, acting as a FSA MAC under light traffic and seamlessly converging to a Time Division Multiple Access (TDMA) MAC under congestion. The paper presents the design principles and the implementation details of LPDQ using low-power commercial radio transceivers. Experiments demonstrate an efficiency close to 99% that is independent of the number of nodes and is fair in terms of resource allocation.Peer ReviewedPostprint (author’s final draft

An experimental evaluation of head-up display formats

Three types of head-up display format are investigated. Type 1 is an unreferenced (conventional) flight director, type 2 is a ground referenced flight path display, and type 3 is a ground referenced director. Formats are generated by computer and presented by reflecting collimation against a simulated forward view in flight. Pilots, holding commercial licenses, fly approaches in the instrument flight mode and in a combined instrument and visual flight mode. The approaches are in wind shear with varied conditions of visibility, offset, and turbulence. The displays are equivalent in pure tracking but there is a slight advantage for the unreferenced director in poor conditions. Flight path displays are better for tracking in the combined flight mode, possibly because of poor director control laws and the division of attention between superimposed fields. Workloads is better for the type 2 displays. The flight path and referenced director displays are criticized for effects of symbol motion and field limiting. In the subjective judgment of pilots familiar with the director displays, they are rated clearly better than path displays, with a preference for the unreferenced director. There is a fair division of attention between superimposed fields

Hubungan Stres Kerja dan Prestasi Kerja Karyawan PT. Asuransi Sinarmas Jakarta Pusat pada Divisi Credit Control

The purpose of this study is (1) To determine the level of work stress of employees at PT. Asuransi Sinarmas Central Jakarta, (2) To determine the level of employee performance at PT. Asuransi Sinarmas Central Jakarta, (3) To determine the relationship between work stress and employee performance at PT. Asuransi Sinarmas Central Jakarta. The research method used by the writer is descriptive method, while the data processing is quantitative using statistical analysis. The population and sample in this study are employees of PT. Asuransi Sinarmas Central Jakarta Credit Control Division, with a total sample of 65 respondents. Based on the results of the calculation of the correlation between variables (X) Job Stress and Variable (Y) Employee Work Achievement obtained rxy value of 0.60. Conclusion (1) Job stress level for employees of PT. Asuransi Sinarmas Central Jakarta Credit Control Division is quite high (2) The level of work performance at employees of PT. Asuransi Sinarmas Central Jakarta Credit Control Division is quite good (3) Relationship between work stress and work performance at employees of PT. Asuransi Sinarmas Jakarta Pusat Credit Control Division is positively related, with a r value of 0.60 or located at 0.60 to 0.799 which shows the relationship between job stress variables and work performance is strong. Suggestion (1) In an effort to increase employee performance at PT. Asuransi Sinarmas Central Jakarta Credit Control Division, the company should fix the stresses that exist in the company environment by holding two-way communication, taking the time to be able to hear employee complaints through counseling, observing the ability of each individual employee specifically, not taking sides with certain employees fair and wise in solving problems. (2) Improving health services. (3) Establishment of harmonization of work stress relationships between employees as team wor

Advances in negotiation theory : bargaining, coalitions, and fairness

Bargaining is ubiquitous in real life. It is a major dimension of political and business activities. It appears at the international level, when governments negotiate on matters ranging from economic issues (such as the removal of trade barriers), to global security (such as fighting against terrorism) to environmental and related issues (such as climate change control). What factors determinethe outcomes of such negotiations? What strategies can help reach an agreement? How should the parties involved divide the gains from cooperation? With whom will one make alliances? The authors address these questions by focusing on a noncooperative approach to negotiations, which is particularly relevant for the study of international negotiations. By reviewing noncooperative bargaining theory, noncooperative coalition theory, and the theory of fair division, they try to identify the connections among these different facets of the same problem in an attempt to facilitate progress toward a unified framework.Economic Theory&Research,Social Protections&Assistance,Environmental Economics&Policies,Scientific Research&Science Parks,Science Education

Advances in Negotiation Theory: Bargaining, Coalitions and Fairness

Bargaining is ubiquitous in real-life. It is a major dimension of political and business activities. It appears at the international level, when governments negotiate on matters ranging from economic issues (such as the removal of trade barriers), to global security (such as fighting against terrorism) to environmental and related issues (e.g. climate change control). What factors determine the outcome of negotiations such as those mentioned above? What strategies can help reach an agreement? How should the parties involved divide the gains from cooperation? With whom will one make alliances? This paper addresses these questions by focusing on a non-cooperative approach to negotiations, which is particularly relevant for the study of international negotiations. By reviewing noncooperative bargaining theory, non-cooperative coalition theory, and the theory of fair division, this paper will try to identify the connection among these different facets of the same problem in an attempt to facilitate the progress towards a unified framework.Negotiation theory, Bragaining, Coalitions, Fairness, Agreements

Advances in Negotiation Theory: Bargaining, Coalitions and Fairness

Bargaining is ubiquitous in real-life. It is a major dimension of political and business activities. It appears at the international level, when governments negotiate on matters ranging from economic issues (such as the removal of trade barriers), to global security (such as fighting against terrorism) to environmental and related issues (e.g. climate change control). What factors determine the outcome of negotiations such as those mentioned above? What strategies can help reach an agreement? How should the parties involved divide the gains from cooperation? With whom will one make alliances? This paper addresses these questions by focusing on a non-cooperative approach to negotiations, which is particularly relevant for the study of international negotiations. By reviewing non-cooperative bargaining theory, non-cooperative coalition theory, and the theory of fair division, this paper will try to identify the connection among these different facets of the same problem in an attempt to facilitate the progress towards a unified framework.Negotiation theory, Bargaining, Coalitions, Fairness, Agreements

The Grizzly, October 25, 2001

Food and Fun at Family Day 2001 • UC Field Hockey Players React to Move from Division I to Division III • Phi Psi Promotes Breast Cancer Awareness Month with Pink Ribbon Fundraiser • Fall Fun and Friendship with UC Best Buddies • Truth About Dr. Fritz • Gay Straight Alliance Walks for AIDS Fund • First Year Student Coordinator Ed Gildea Helps Students Work to their Fullest Potential • Take Advantage of the Upcoming Internship Fair • Students Learn the Truth about Drinking • Opinions: Athletic Scholarships at Ursinus; Listen up Insurance Companies: Give me my Birth Control! • Stunned in Awe: It\u27s all in the Name • Birth Control Basics • Bears Take Down Wooster • UC Field Hockey Takes on The Capital • Bears Volleyball Falls into a Slump after Beating DeSales • Women\u27s Soccer Builds up Momentum to Beat Villa Julie • Veteran\u27s Day for UC Men\u27s Soccer • Penderghest and Dougherty Run to Bear Pack Victory! • Splish, Splash, UC is Back in a Flash • Outlook for 2002 Lacrosse • Ursinus Cheerleadinghttps://digitalcommons.ursinus.edu/grizzlynews/1498/thumbnail.jp