Topic
Vertical mobility
About: Vertical mobility is a research topic. Over the lifetime, 100 publications have been published within this topic receiving 3609 citations.
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01 Dec 2007TL;DR: A QoS framework in a mobility scenario to cater for applications that can adapt to the variability of bandwidth and delay across the different technologies, and also across different access points is proposed.
Abstract: Mobility management has been an important focus in recent years due to the growth of mobile users. Besides mobile IP (MIP) standard, there are many proposals for mobility support in the literatures such as application mobility using session initiation protocol (SIP) [1] and terminal-assisted mobility [2]. With the availability of many wireless access technologies, vertical mobility becomes an important focus to take advantage of the various technologies. With these various access technologies exhibit different characteristics in bandwidth, delay and coverage, the issue of maintaining users' perceived quality-of-service (QoS) across these technologies arises. Even though the availability of multiple technologies increase the coverage, the variability of bandwidth and delay introduces difficulties for applications to run while maintaining the QoS. This QoS issue is important considering the growth of mobile users and real-time applications in this mobile environment. In this paper, we propose a QoS framework in a mobility scenario to cater for applications that can adapt to the variability of bandwidth and delay across the different technologies, and also across different access points. Through our framework, end-to-end QoS signaling is facilitated between the terminals; adaptive applications thus can take advantages of this signaling to maintain users' perceived QoS.
1 citations
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24 Jul 2009TL;DR: This paper aims to connect specific features of single individual dynamics to the overall evolution of the social community in the true thread of the Palm calculus philosophy with a large mobility track dataset expressly collected with this objective.
Abstract: We present a sensitivity study of a wait and chase scheme introduced in a previous work to model the contact times between people belonging to a social community. The membership presupposes that, besides purely occasional encounters, people are motivated to meet other members of the community, while the social character of the latter makes each person met an equivalent target. This calls for a mobility in the family of Levy jumps alternating a wandering period within a limited environment --waiting phase --with jumping to a new site constituting the target of a chase phase. In this paper we aim to connect specific features of single individual dynamics to the overall evolution of the social community in the true thread of the Palm calculus philosophy. We base this study on a large mobility track dataset expressly collected with this objective.
1 citations
01 Jan 2009
TL;DR: In this paper, the professional mobility is considered through two aspects: the first being a vertical one as an ability to realize a functional of both low and high levels effectively (the methodist realizes the functional as the director of the kindergarten, the educator responsible for organizing the children's work in the group); the second a horizontal one is a ability to change occupation according to the changed conditions without any psychological aftereffects, to take in a new social niche.
Abstract: The professional mobility is considered through two aspects: the first being a vertical one as an ability to realize a functional of both low and high levels effectively (the methodist realizes the functional as the director of the kindergarten, the educator responsible for organizing the children's work in the group); the second a horizontal one is an ability to change occupation according to the changed conditions without any psychological aftereffects, to take in a new social niche.
1 citations
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TL;DR: However, no one system is likely to be universally applicable nor perfectly reproduced, even in a limited sample of less developed countries as mentioned in this paper, since both the level and the rate of development will affect the diversity of groups and their relationships.
Abstract: Implicit in any description of conditions in the recently developing less developed countries is the assumption that their processes of production and distribution operate within rigidly stratified societal structures. Of course, for many of these recently developing countries, their strata are neither perfectly static nor absolutely rigid. Nevertheless, and particularly in the least developed and the most slowly developing, rigidity will be an appropriate assumption. Where it is relatively strong, it will be a limitation to the growth process of an importance equal to if not greater than that of the real economic ones, such as low levels of savings, and equal to if not more important than those of a physical nature, such as a lack of readily accessible natural resources. Stratification is a system of group relationships. However, no one system is likely to be universally applicable nor perfectly reproduced, even in a limited sample of less developed countries. The reason for this is that both the level and the rate of development will affect the diversity of groups and their relationships. A developing country is not only expanding the scope of its market economy but, concomitantly, the potential, if not the real, specialization of its economic, social, and political functions. To the extent that this specialization be realized in the area of economic activities, there will be an increase in the number of steps and groups involved in production and distribution and an increase in the complexity of their relationships. Since the level and rate of development will differ from country to country, the degree of diversity among the groups and the complexity of their relationships will vary. Therefore, the system of social stratification of any one country will not be perfectly reproduced in any other country. Given a country's system of social stratification, rigidity will be an element influencing the relationships between the various groups. As such, it is the converse of vertical mobility and is directly a function of the growth process. Economic development, even if narrowly thought of as merely a process of industrial expansion, should reduce the rigidities in the system of social stratification by increasing the opportunities for vertical economic
1 citations