sps jun 2014 (13 Ergebnisse)

Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -With a third of human food coming directly and indirectly from honeybee pollination, colony collapse disorder (CCD) will have significant economic, ecological, and social impacts if further colony losses are not prevented. CCD is a complex problem that results from both natural and anthropogenic causes. This book will discuss the various factors that have been researched as possible causes for colony loss as well as explore the long-term effects that this decline could have. The analysis is helpful for anybody interested in protecting the species that provides access to a healthy livelihood for humans. 64 pp. Englisch.

Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Solar ultraviolet (UV) radiation has influenced the evolution of life on earth and was one among the possible causes for the different skin pigmentation in humans: those inhabiting low latitudes, with high UV intensity, have darker skin pigmentation to protect from the deleterious effects of radiation, while those in higher latitudes have developed fair skin to maximize vitamin D production from much lower ambient UV. In the last centuries there have been an increase in human migration from original areas and changes in habits and attitudes, causing that human skin pigmentation is no longer necessarily suited to the environment. In addition, the documented stratospheric ozone downward trend in the 90s of the last century and its still slow recovery have been associated, at least theoretically, with an increase of solar UV at the earth s surface. The purpose of this book is to suggest and test a methodology, based on polysulphone dosimetry, for the assessment of solar UV exposure and to search for possible biological indicators of its effects. An overview of the problem is offered and some field experiments performed with groups of volunteers are presented and discussed. 120 pp. Englisch.

Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Dynamic reconfiguration is one of the most important problems in the field of network management. In the case of some part of the network being damaged the system should maintain its operations, taking into account the new conditions. This can be achieved by using the reserve capacity of the system if it is available. To reorganize traffic by using new routes we should have a flexible routing system. The dynamic reconfiguration problem becomes more complicated if Service Level Agreements (SLAs) are taken into account. We consider the so-called Olympic service that provides three tiers of services: gold, silver and bronze with decreasing quality. When the failure occurs, the provider needs to reconfigure the transfer of the network as quickly as possible, attending firstly to the gold customers and once that is done to the silver customers and lastly, if there is any time left, to the bronze customers. We describe various linear programming problems that can be used for dynamical reconfiguration in the presence of SLA. In particular we discuss in detail approaches to reconfiguration with and without penalization. 136 pp. Englisch.

Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -There are three questions that this work tries to answer. First, we investigate some spectral of fine properties of a 3 × 3 block operator matrix with unbounded entries and with domain consisting of vectors which satisfy certain relations between their components. An application to transport equations that describes the neutron transport in a plane-parallel domain with width 2a, or the transfer of unpolarized light in a plane-parallel atmosphere of optical thickness 2a is given. Second, we discuss under which conditions a 2 × 2 operator matrix with nonlinear entries, acting on a product of convex closed subsets of Banach spaces have a fixed point. As application, we give some existence results for a mixed stationary problem on Lp-spaces (1 p 1) inspired from the Rotenberg s model. Finally, we study some algebraic and topological properties of a new set defined by Ghyp(T) := { a : T aI is hypercyclic} for a given bounded linear operator acting on separable Banach space. 96 pp. Englisch.

Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The strategic management models of the late Igor Ansoff predict that the effectiveness of organizational strategies and management capabilities depends in part on the turbulence of the business environment in which the organization operates. Ansoff defined five levels of turbulence, and identified the characteristics of strategic aggressiveness and management capabilities that are most effective for a given level of turbulence. Greg Lorton adapted Ansoff s corporate models to environmental management systems within organizations, surveying 78 businesses and government organizations in California. He found that these models continue to be effective when applied to environmental management systems. He further studied the elements of environmental management strategies and how they relate to environmental strategic aggressiveness, management capabilities, and performance on environmental issues. While proactive environmental management systems generally lead to improved environmental performance, in some cases more conservative systems can also be effective. 208 pp. Englisch.

Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -In year 1990, The Egyptian Organization for Standardization and Quality Control issued the Egyptian Standard number 1867, which concerns the soft cheese with vegetable fats, based on these specifications, several kinds of cheese appeared during the past ten years, such as Ghasala cheese . That is why it is important to study and control it. So, This study is based on; - We collected six samples of six different small local factories producing this kind of Ghasala Cheese , which is spread in the three Governorates after attending the manufacturing steps in sites of production themselves and taking the samples for analysis, and doing Chemical Composition, Microbiological Analysis, organoleptic properties and the Economical Study. - Choosing the best sample to studying the effect of Homogenization (150 bar) on the characteristics of the cheese. - Studying the effect of heat treatment (85ºC18sec-45ºC) and Homogenization on the characters, Quality and the expiry date of the cheese. - Studying the effect of adding some stabilizers on the chemical, microbiological and organoleptic properties of cheese. - Studying the effect of vegetable fat substituting by buffalo s milk fat. 148 pp. Englisch.

Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Relay communication systems have recently been gaining momentum as an alternative to cellular architectures because of the ability to provide cost-efficient high spectral efficiency communications. The goal of this book is to investigate opportunistic relay communication strategies in various network configurations. We derive the outage probability of opportunistic two-hop multiple relay networks with nodes having single or multiple antennas. The challenge in the analysis of the outage probability are in incorporating realistic channel effects such as path loss, shadowing, and fast fading. We incorporate the channel dynamics in analyzing opportunistic relay selection schemes and determine the optimal selection period. As an extension of a conventional relay network, we explore a buffer-equipped relay network, where the network allows relays to delay transmission and transmit when the channel conditions are favorable. We further consider a spatial reuse multi-hop relay network, and propose a full special reuse multi-hop (FSRM) relay communication scheme, which allows relays to transmit their data using every other time slot. 168 pp. Englisch.

Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This book is a reward of the research on the impact of electronic information seeking behavior of agriculture scientists engaged in research and teaching activities. A extensive survey has been done by the author of all the ICAR Institute in Uttar Pradesh, a heartland of India.This book is quite useful for researchers and students indulge in research activity related to information seeking behavior. 180 pp. Englisch.

Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -For many low income and disadvantaged students formerly in foster care, community colleges are the main post-secondary educational pathway to socioeconomic opportunities. However, students formerly in foster care face many barriers in accessing college as well as actually succeeding in achieving a college degree. Although there have been considerable efforts to expand opportunities for foster youth to earn college degrees, low educational achievement and attainment continue to characterize this population. This qualitative study represents the stories of 12 former foster youth and their collective experience relating to what it is like to be a former foster youth navigating the financial aid system. The purpose of this phenomenological study was to understand the process of financial aid as seen through the lived experiences of former foster youth. This study presents the opportunities and barriers faced by these individuals in accessing financial aid and as such, it provided a community of students a voice that could help improve policies and practices towards the process of awarding and coordinating financial aid to students formerly in foster care. 224 pp. Englisch.

Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -In developing as well as developed countries, science plays a great role for social welfare and empowerment. Of all the media, radio is an effective medium to reach the masses. This is because even illiterates can use this medium, especially in a developing country like India. All India Radio (AIR), community radio, Gyan Vani and private FMs make efforts in imparting scientific temper. The book covers the perceptions of the radio listeners about the potentiality of the radio to provide science programmes in an effective way in the urban areas. It explores the broadcasting intensity of the science programmes across radio stations. In the same line, effectiveness and use of the programme is examined. The book also examines the prospective use of radio in communicating the science programmes and the extent that radio has made effective contribution to the public understanding of science. 312 pp. Englisch.

Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -With the advent of new materials, there is a constant need for designers to find innovative ways to incorporate these materials into new challenging applications. Engineered Cementitious Composite (ECC), which belongs to a family of High Performance Fiber Reinforced Cementitious Composites (HPFRCC), is a class of ultra ductile short discrete fiber reinforced cementitious composite developed for such potential challenging applications. Strain hardening through multiple cracking in axial tension and tight crack width control are two unique properties put ECC in a category of smart material. Microstructure tailoring based on micromechanics may lead to extreme composite ductility of several percent in tension; a material property not seen ever before in discontinuous Fiber Reinforced Cementitious (FRC) Composites. This makes ECC superior to that of ordinary concrete which is having brittleness in both tension and shear as their inherent weaknesses. Recron brand Polyester type of fiber exhibit strong interaction towards other substrates being polar in nature because of which bendability of composite is achieved. 328 pp. Englisch.

Taschenbuch. Zustand: Neu. This item is printed on demand - Print on Demand Titel. Neuware -The strategic management models of the late Igor Ansoff predict that the effectiveness of organizational strategies and management capabilities depends in part on the turbulence of the business environment in which the organization operates. Ansoff defined five levels of turbulence, and identified the characteristics of strategic aggressiveness and management capabilities that are most effective for a given level of turbulence. Greg Lorton adapted Ansoff's corporate models to environmental management systems within organizations, surveying 78 businesses and government organizations in California. He found that these models continue to be effective when applied to environmental management systems. He further studied the elements of environmental management strategies and how they relate to environmental strategic aggressiveness, management capabilities, and performance on environmental issues. While proactive environmental management systems generally lead to improved environmental performance, in some cases more conservative systems can also be effective.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 208 pp. Englisch.

Taschenbuch. Zustand: Neu. This item is printed on demand - Print on Demand Titel. Neuware -For many low income and disadvantaged students formerly in foster care, community colleges are the main post-secondary educational pathway to socioeconomic opportunities. However, students formerly in foster care face many barriers in accessing college as well as actually succeeding in achieving a college degree. Although there have been considerable efforts to expand opportunities for foster youth to earn college degrees, low educational achievement and attainment continue to characterize this population. This qualitative study represents the stories of 12 former foster youth and their collective experience relating to what it is like to be a former foster youth navigating the financial aid system. The purpose of this phenomenological study was to understand the process of financial aid as seen through the lived experiences of former foster youth. This study presents the opportunities and barriers faced by these individuals in accessing financial aid and as such, it provided a community of students a voice that could help improve policies and practices towards the process of awarding and coordinating financial aid to students formerly in foster care.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 224 pp. Englisch.