Search results for "quest"
showing 10 items of 3700 documents
Performance analysis of the ieee 802.16 arq mechanism
2007
The IEEE 802.16 technology defines the ARQ mechanism that enables a connection to resend data at the MAC level if an error is detected. In this paper, we analyze the key features and parameters of the 802.16 ARQ mechanism. In particular, we consider a choice for the ARQ feedback type, an algorithm to build block sequences, a scheduling of the ARQ feedbacks and retransmissions, the ARQ block rearrangement, ARQ transmission window and ARQ block size. We run a number of simulation scenarios to study these parameters and how they impact a performance of application protocols. The simulation results reveal that the ARQ mechanism and its correct configuration play an important role in transmittin…
On ARQ feedback intensity of the IEEE 802.16 ARQ mechanism
2008
The IEEE 802.16 standard defines the ARQ mechanism as a part of the MAC layer. The functioning of the ARQ mechanism depends on a number of parameters. The IEEE 802.16 specification defines them but it does not provide concrete values and solutions. We ran simulation scenarios to study how the ARQ feedback intensity impacts the performance of application protocols. The simulation results reveal that a low ARQ feedback intensity results only in a marginal improvement. Though it is possible to optimize the ARQ feedback intensity, it is reasonable to rely upon more frequent ARQ feedback messages as they do not result in a performance degradation. At the same time, ARQ connections, which work on…
Social capital management. A case study of the town of Racibórz
2021
For many years, social capital has been the subject of research in various areas and social environments. What is worth diagnosing is not so much its functioning or formation, but its management, i.e. deliberate development aimed at achieving individual or collective benefits. The cultural borderland region of the Racibórz area, especially the town, is a good case for an analysis of such phenomena, because, over the centuries, the town has been part of various administrative and economic regimes and thus has developed forms of social capital independent of state structures. The main research questions in this paper are the following: What remains of them today? Are they subject to managemen…
Campaign issues in political strategies and press coverage: The rental law conflict in the 1982–1983 election campaign in the federal republic of Ger…
1989
Abstract Election campaigns are institutionalized conflicts which are carried out in and through the mass media. Success and defeat in these conflicts depend upon the communication strategies of the parties and on the reactions of the journalists. In the election campaign of 1982–1983, the campaign manager of the Christian Democrats succeeded in altering the conflict over the new rental law into a conflict over the credibility of the SPD‐opposition. Thus, he created a counterpart to the criticism directed against the federal government. The newspapers and weekly news magazines did not take sides in the conflict through explicit evaluations, but rather by emphasizing or neglecting issues in …
Procedure and Debate in the British Parliamentary Culture
2016
Haapala illuminates the relationship between procedure and debate in the British parliamentary culture that was formed during the nineteenth century. While emphasising the constitutional shift to parliamentary government after the passing of the 1832 Reform Act, the chapter demonstrates its effects on the parliamentary culture with a special focus on the increasing role of debate and the attempts to reform House of Commons’ procedures. As well as drawing attention to the publicity of parliamentary proceedings and professionalisation of political journalism, Haapala uses rhetorical treatises and manuals to show the common attitudes towards parliamentary debate before and after the institutio…
High-urgency kidney transplantation in the Eurotransplant Kidney Allocation System : success or waste of organs? The Eurotransplant 15-year all-centr…
2016
Item does not contain fulltext BACKGROUND: In the Eurotransplant Kidney Allocation System (ETKAS), transplant candidates can be considered for high-urgency (HU) status in case of life-threatening inability to undergo renal replacement therapy. Data on the outcomes of HU transplantation are sparse and the benefit is controversial. METHODS: We systematically analysed data from 898 ET HU kidney transplant recipients from 61 transplant centres between 1996 and 2010 and investigated the 5-year patient and graft outcomes and differences between relevant subgroups. RESULTS: Kidney recipients with an HU status were younger (median 43 versus 55 years) and spent less time on the waiting list compared…
Road project opportunity costs subject to a regional constraint on greenhouse gas emissions
2012
Abstract France has constrained the Aquitaine region to set up a climate plan to avoid an emission of 2883 ktCO 2 eq for the period 2007–2013. In parallel, the region has decided to carry out the construction of road infrastructures in order to avoid very high congestion costs. Those road projects will involve an increase in greenhouse gas (GHG) emissions during that period. In the present context of strong sustainability, all emissions (direct and indirect) generated by those projects should be offset. At the regional level, the offsetting of GHG emissions is usually carried out by implementing carbon sequestration projects or projects that reduce energy demand. This paper aims at determin…
L’adattamento italiano del Group Questionnaire (GQ): risultati preliminari in gruppi di training universitario.
2012
La comprensione del processo clinico e terapeutico nei gruppi, l’elaborazione concettuale sui costrutti della relazione terapeutica, l’indagine sulla sovrapposizione concettuale (e statistica) dei costrutti Clima di gruppo, Coesione ed Alleanza sono alla base della proposta del Group Questionnaire - GQ (Burlingame, McClendon, Alonso, 2011), self-report di 30 item, che fornisce informazioni sulla qualità delle relazioni in gruppo. Il Group Questionnaire - GQ si differenzia dagli strumenti precedentemente usati perché fondato su una teoria unificata della relazione gruppale (Johnson et al, 2005, 2008; Bormann and Strauss, 2007; Bakali et al, 2008), che individua un modello a tre fattori: Lega…
Irrationale Einstellungen und soziale Belastung bei Patienten in ambulanter Verhaltenstherapie: Verlauf, prognostische und mediierende Einflüsse auf …
2002
Fragestellung: Bisherige Studien legen nahe, dass sozialer Stress und kognitive Dysfunktion zur Entwicklung psychischer Storungen beitragen konnen. Kaum untersucht wurde, inwieweit beide Faktoren die Heilungschance bei psychotherapeutischer Behandlung beeinflussen und mit dem Behandlungserfolg kovariieren. Ziel der Studie war, die 1. Veranderung irrationaler Einstellungen und der Wahrnehmung sozialer Belastung im Verlauf ambulanter Verhaltenstherapie sowie 2. ihre Rolle als Pradiktoren und 3. als Mediatoren des Behandlungsergebnisses bei Patienten mit heterogenen Diagnosen zu untersuchen. Methoden: Eine diagnostisch unausgelesene Stichprobe von 62 Patienten wurde zu Beginn und zum Abschluss…
How widespread are the symptoms of an overactive bladder and how are they managed? A population-based prevalence study
2001
Objective To determine the prevalence of chronic and debilitating symptoms of the overactive bladder, defined here as the presence of chronic frequency, urgency and urge incontinence (either alone or in any combination), and presumed to be caused by involuntary detrusor contractions. Subjects and methods Data were collected using a population-based survey (conducted by telephone or direct interview) of men and women aged 40 years, selected from the general population in France, Germany, Italy, Spain, Sweden and the United Kingdom, using a random stratified approach. The main outcome measures were: prevalence of urinary frequency (> 8 micturitions/24 h), urgency and urge incontinence; the p…