نتایج جستجو برای: geographical data
تعداد نتایج: 2443505 فیلتر نتایج به سال:
How does the geographic distance between potential acquiring and target firms affect acquisition strategy? Although popular discussions suggest that distance may be critically important to strategy, formal research on acquisition-based growth has paid little attention to spatial factors. This study examines how the distance between acquiring and target firms influences target selection, explori...
This vignette describes gdistance, an R package which provides functionality to calculate various distance measures and routes in heterogeneous geographic spaces represented as grids. Distances are fundamental to geospatial analysis (Tobler 1970). The most commonly used geographic distance measure is the great-circle distance, which represents the shortest line between two points, taking into a...
Users and network administrators need ways to filter email messages based primarily on the reputation of the sender. Unfortunately, conventional mechanisms for sender reputation—notably, IP blacklists—are cumbersome to maintain and evadable. This paper investigates ways to infer the reputation of an email sender based solely on network-level features, without looking at the contents of a messag...
In an ageing society, families may have an important role in the caretaking and well-being of the elderly. Demographic changes have an impact on the size and structure of families; one aspect is how intergenerational support is distributed when there is a need for support to both older and younger generations at the same time. Another vital aspect of the provision of care for the elderly is geo...
How do organizations coordinate interdependent activities across geographic distance? We analyze 121 surveys of offshored processes to understand both the sources of difficulty in the remote delivery of services as well as how organizations overcome these difficulties. We find that contrary to conventional wisdom, system dependence of a process is a much greater hindrance to the offshoring serv...
Abstract—Women are most vulnerable to crime despite occupying central position in shaping a society as the first teacher of children. In India too, having equal rights and constitutional safeguards, the incidences of crime against them are large and grave. In this context of crime against women, especially rape has been increasing over time. This paper explores the spatial and temporal aspects ...
This paper examines how information asymmetry affects cross-border strategic alliance formation by US firms over the period 2000–2008. We construct a measure, information costs, based on both geographical distance and the proportion of worldwide GDP the partner’s home country represents. Consistent with our expectations, we find an inverse association between information costs and cross-border ...
This paper brings together our findings on the importance of the geographical proximity and the network structure in the knowledge creation and sharing in Canadian biotechnology and nanotechnology. We find that most of the knowledge sharing occurs inside the geographical clusters or in the proximate distance. However, very distant or overseas collaborations are preferred over the mid-range dist...
A geographical information system (GIS) is a framework capable to assemble, keep, process and display specific information, identified by geographical location, which can combines layers of information to give the user a better understanding about that location. Intelligent agents prove to be a useful tool for data mining in geographical distributed knowledge bases. In this paper we present a m...
1. Introduction In traditional dialectology, dialect variation is often represented by areas within which similar dialects are spoken. The dialect areas are found by drawing dividing lines (isoglosses) between areas where different representations are found for selected linguistic variables. However, different isoglosses do not always coincide which makes it difficult to draw borders between th...
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