نتایج جستجو برای: in geographical

تعداد نتایج: 16981196  

Journal: :IET Communications 2008
Maged Elkashlan Cyril Leung Robert Schober

Abstract: A procedure for determining the probability distribution of the rth order statistic, Gr:L, r 1⁄4 1, 2, . . . , L, among a set of L correlated Nakagami diversity branch gains G1, G2, . . ., GL has been described in David and Nagaraja (2003) and Elkashlan et al. (2008). The results are used to evaluate the bit error rate (BER) of general order selection (GOS), a diversity method in whic...

2011
Mohammad B. Uddin Manuel J. Steinbauer Carl Beierkuhnlein

Assessing biodiversity and the spatial structures of forest ecosystems are important for forestry and nature conservation. However, tropical forests of Bangladesh are only sparsely investigated. Here we determined biodiversity (alpha, beta and gamma), spatial species turnover and stand characteristics of one of the few remnant tropical forests in Bangladesh. Two differently protected areas of S...

1992
Steven H. Low Kathleen M. Nichols

This paper describes a performance study of a trial Switched Multimegabit Data Service (SMDS) link from the perspective of customers evaluating the feasibility of the link for some target applications. The goals were to take all measurements on the customer premises and to develop a methodology general enough to be used by customers to evaluate the link. We measured a lightly loaded system and ...

2005
MATT CARTMILL

There are hereditary differences among human beings. Some of these differences have geographical correlates. Some genetic variants that produce physical or behavioral deficits occur significantly more often in some areas, or in some ethnic groups, than in others. However, none of these facts provides any intellectual support for the race concept, for racial classifications, or for social hierar...

2008
CYRIL BOUQUET JULIAN BIRKINSHAW

This study investigates how foreign subsidiaries gain attention from corporate headquarters. Using detailed questionnaire and archival data on 283 subsidiaries of multinational enterprises, our analysis revealed three significant findings. First, attention decisions are partially based on the structural positions that subsidiary units occupy within a corporate system—their “weight.” Second, a s...

2003
P. Jeffrey Brantingham

Motoo Kimura (1983:xiv) The Neutral Theory of Molecular Evolution The richness of stone raw material types in an archaeological assemblage, the geographic distances over which those materials were transported, and the technological forms in which they were transported have provided empirical benchmarks for inferring the organization of Paleolithic adaptive strategies (FéblotA NEUTRAL MODEL OF S...

Journal: :Social Networks 2011
Dan Braha Blake C. Stacey Yaneer Bar-Yam

A substantial number of studies have extended the work on universal properties in physical systems to complex networks in social, biological, and technological systems. In this paper, we present a complex networks perspective on interfirm organizational networks by mapping, analyzing and modeling the spatial structure of a large interfirm competition network across a variety of sectors and indu...

2015
RODRIGUE IDOHOU ARTURO H. ARIÑO ACHILLE EPHREM ASSOGBADJO ROMAIN GLELE KAKAI BRICE SINSIN

—Despite efforts by researchers worldwide to assess the biodiversity of plant groups, many locations on Earth remain poorly surveyed, resulting in inadequate or biased knowledge. Robust estimates of inventory completeness could help alleviate the problem. This study aimed to identify areas representing gaps in current knowledge of African palms, with a focus on Benin (West Africa). We assessed ...

1999
Pierre-Yves Oudeyer

The naming game is a formal mechanism that describes the development of a lexicon in a society of culturally interacting agents. We will here use a cellular automaton version of this game to study the innuence of an extra-linguistic structure over the evolution of the lexicon, but also the innuence of language over this a priori structure. This extra-linguistic structure will be coded by rst gi...

2013

This paper discusses a new approach to controlling for the environment when estimating efficiency. In response to the literature on the international comparison of bank efficiency, we draw the attention to a local dimension of comparison. By introducing geographical weights and estimating local frontiers for each US savings bank for the 2001-09 period, we find that the bank technical performanc...

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