This paper proposes and analyzes bandwidth reclaim scheme for IEEE 802.11 WLAN, which may suffer from severe bandwidth waste resulting from not only the variation of transmission rate and message length but also the overallocation to the real-time traffic in compensating for the delay due to the intervention of non-real-time messages. Built on top of the weighted round robin scheduling policy, ...

We demonstrate that a simple solar dynamo model, in the form of a Parker migratory dynamo with random fluctuations of the dynamo governing parameters and algebraic saturation of dynamo action, can at least qualitatively reproduce all the basic features of solar Grand Minima as they are known from direct and indirect data. In particular, the model successfully reproduces such features as an abru...

intra-abdominal desmoplastic small round cell tumor is a rare entity with a few reports worldwide. this tumor commonly occurs in children and adolescent and occurrence in adult age group is very rare. here, we describe an adult male with symptoms of intestinal obstruction due to abdominal mass, located in splenic flexure. after resection, the diagnosis of intra-abdominal desmoplastic small roun...

Tes kystes du grand Epiploon sont assez rares, ct es lymphangiomies kystiques de grand epiploon asscz exceptionnelles.Le coutenu de ces kystes lymphatiques peuvent etres soit sereux soit chyleux.  Au point de vue pathogenic, Ladd et Gross pell­sent que ces kystes proviennent de l'isolemcnt ct du tlevelopement d'un ou plusieurs kystes lymphatiquc, primitifs.  Dans !'observation que nous prcsen...

We consider differentiated bandwidth allocation for short-range wireless personal communication systems: Bluetooth. Since bandwidth requirements may vary among applications/services, and/or it may change over time, it is important to decide how to allocate limited resources to various service classes to meet their service requirements. We propose a simple and eff icient bandwidth allocation mec...

Malik Muhammad Khurram Sher Khan, MD, Malik Muhammad Humayun Sher Khan, MD, Aaron Tolan, MD, Darryl Elmouchi, MD, FHRS, Carlos E. Tavera, MD, FACP From the Grand Rapids Medical Education Partners, Michigan State University, Grand Rapids, Michigan, Frederik Meijer Heart & Vascular Institute, Spectrum Health, Grand Rapids, Michigan, and Department of Internal Medicine, Michigan State University C...

In this position paper, we argue that usable privacy and security is a grand challenge that needs more attention from the HCI community. We also discuss benefits to and new challenges for HCI, and use our research experiences to provide a critique of HCI. Usable Privacy and Security: A Grand Challenge for HCI Jason I. Hong Carnegie Mellon University 5000 Forbes Ave, Pittsburgh PA 15213