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In this paper we present a new class of MAC protocols for wireless LANs based on sharing of transmission intentions. We develop an example protocol implementation based on distributed, co-operative scheduling of data frames. Sched- ules are non-binding, requiring minimal negotiation between nodes. The protocol is implemented on top of standard 802.11 so that backwards compatibility with legacy nod
Complex SOCs areincreasingly tested in a modular fashion, which enables us torecord the yield-per-module. In this paper, we consider theyield-per-module as the pass probability of the module smanufacturing test. We use it to exploit the abort-on-fail featureof ATEs, in order to reduce the expected test application time. Wepresent a model for expected test application time, which obtainsincreasing
The interference based analysis of Bose Einstein Correlations in the Lund Model has hitherto been limited to simple strings without gluonic excitations. A new fragmentation method based on the Area Law in the Lund Model allows such an analysis to be extended to multigluon strings.
In this article we evaluate the work out of artificial neural networks as tools for helping and support in the medical diagnosis. In particular we compare the usability of one supervised and two unsupervised neural network architectures for medical diagnoses of lower urinary tract dysfunctions. The purpose is to develop a system that aid urologists in obtaining diagnoses, which will yield improved
This is a detailed guide on the principles of cognitive therapy as they are applied to problems of emotion (anxiety, sadness, anger), skill (assertiveness, problem-solving), and general confidence in children and adolescents. The title is slightly misleading in the sense that there is little in the book that specifically relates to how this treatment would be applied in school settings by school p
This paper shares the experiences of 5 universities involved in a benchmarking exercise on e-learning in 2009 through ESMU. A total of 9 European universities participated in the exercise with the purpose of evaluating their existing e-learning practices and policies and getting advice on which areas to improve and how. Initially, the paper discusses the benchmarking concept and reasons why insti
Popular Abstract in Swedish Denna avhandling berör metoder för hur beräkningsmekaniken kan förbättras med avseende på förbättrad och effektiv användning av verktyg och resurser. Den berör också ideér för hur verktyg i beräkningsmekanik skall kunna tillämpas i områden där dessa ej tidigare använts. Tre huvudområden har studerats: Effektiv och transparent tillgång till finita element applikationer, This work concern ideas and methods on how the context of computational mechanics can be improved for more efficient utilisation and extended into areas previously not familiar with or capable of using such tools. Three main areas were studied: Providing efficient and transparent access to finite element applications, development of methods for the visualisation of complex phenomena and improving
Knowledge concerning how the built environment should be designed to allow accessibility for persons with different disablements is not sufficiently applied in building design and facilities management. Many of the difficulties in traditional paper based design to communicate and validate the use of a building can be overcome by the new possibilities that are offered by object oriented 3D based ca
A runtime system for implementation of image processing operations is presented. It is designed for working in a flexible and distributed environment related to the software architecture of a newly developed UAV system. The software architecture is characterized at a coarse scale as a three level system, with a deliberate layer at the top, a reactive layer in the middle, and a processing layer at
Purpose - Business model innovation is a new way for Chinese firms to compete in the global economy. Due to the unique context in China, the authors aim to clarify what is a business model, how to design a business model, and how different designs affect firms' competitive advantages in China. Design/methodology/approach - Literature review and multiple case studies (i.e. Dinghan Technology, Flush
Cigarette smoking among asthma patients is associated with worsening symptoms and accelerated decline in lung function. Smoking asthma is also characterized by increased levels of neutrophils and macrophages, and greater small airway remodeling, resulting in increased airflow obstruction and impaired response to corticosteroid therapy. As a result, smokers are typically excluded from asthma random
The literature dealing with abdominal wall surgery is often flawed due to lack of adherence to accepted reporting standards and statistical methodology. The EuraHS Working Group (European Registry of Abdominal Wall Hernias) organised a consensus meeting of surgical experts and researchers with an interest in abdominal wall surgery, including a statistician, the editors of the journal Hernia and sc
For the very first time we present 3D simulations of planets embedded in stellar irradiated discs. It is well known that thermal effects could reverse the direction of planetary migration from inwards to outwards, potentially saving planets in the inner, optically thick parts of the protoplanetary disc. When considering stellar irradiation in addition to viscous friction as a source of heating, th
In many organisations a gap exists between IT management and emergency managemement. This paper illustrates how process improvement based on a maturity model can be used to help organisations to evaluate and improve the way they include IT dependability information in their emergency management. This paper presents the IDEM3 (IT Dependability in Emergency Management Maturity Model) process improve
BACKGROUND: Situational needs of health care facilities inform the optimal allocation of resources and quality improvement efforts. This study examines surgical care delivery metrics at a tertiary care institution in Liberia. METHODS: We retrospectively reviewed operative and ward logbooks from January 1 to December 31, 2012. Data parameters included patients' age, diagnosis, procedure, mortality,
given depth, including submerged macrophytes and associated invertebrates. The sampler is a tong-shaped instrument consisting of two metal rods connected by a flexible joint. At the end of each arm is a metal cylinder (diameter 10 cm); one end of the cylinder has a sharpened edge and the other is equipped with a net. Powerful metal springs force the cylinders together at high speed, and macrophyte
The purpose of this paper is to present a regulator for control of the continuous-sedimentation process in a clarifier–thickener unit when this is modelled in one space dimension and when the settling properties of the solids obey Kynch’s assumption. The model is a scalar hyperbolic conservation law with space-discontinuous flux function and point source. The most desired type of solution contains
