cuvillier jun 2015 (51 resultados)

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This work presents a high-linearity automotive radar front-end at 77 GHz in 0.25 ¿m SiGe technology. The passive elements were realized using thin-film microstrip lines. A detailed transformer balun synthesis procedure was developed. The realized passive baluns (¿rat-race¿ and transformer) show excellent commonmode rejection ratios exceeding 30 dB and low losses of 2.5 dB. On the active side, a low-gain, high-linearity single stage common-emitter LNA was realized. The selected topology allowed finer trade-off between linearity and sensitivity of the front-end compared to multi-stage LNA solutions. For the mixer, a low-voltage supply, high-linearity, low-noise double-balanced concept was employed. It uses AC-coupling between the two stages, which allowed an independent optimization of transconductance, core sizing, and bias. The transconductance was designed for best noise performance, while the core was chosen for maximum linearity.A high-fidelity two-channel receiver was realized using these circuit components, which achieved a performance comparable to the published state-of-the-art results in SiGe: Single sideband noise figure better than 16.5 dB, 1 dB compression point exceeding -12 dBm, while consuming moderate 82 mA DC current from a 1.6 V supply for both channels. 176 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Due to its adaptation to extremely harsh environments, pearl millet (Pennisetum glaucum (L) R. Br.) is one of the most important staple cereals cultivated in the arid and semi-arid tropics of Asia and Africa. In these regions pearl millet is mainly produced under low-input, rainfed conditions in traditional farming systems, where several constrains are affecting pearl millet production, such as inter-annual rainfall variability, pests, diseases, Striga and use of low yielding varieties. The majority of the human population in these regions is affected by nutritional deficiencies of essential minerals causing micronutrient malnutrition (so-called ¿hidden hunger¿). Plant genetic resources provide basic materials for selection and improvement of crop productivity through the optimal design of breeding programs to meet food security needs of the world¿s rapidly rising population. The advent of PCR-based molecular markers such as simple sequence repeats (SSRs) has created an opportunity for fine-scale genetic characterization of germplasm collections. Understanding the structure of diversity and the identification of distinct materials with complementary traits for recombination by crossing provides the foundation for effective and sustained pearl millet population breeding and synthetic and hybrid development, based on the concept of heterotic groups in this allogamous crop. 142 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -In recent decades the frequency and severity of natural disasters increased. This development is accompanied by an increase in catastrophe related economic losses and is assumed to continue for the foreseeable future if effective disaster mitigation efforts are omitted. Due to the massive destruction of physical assets the basis for economic losses are generally reconstruction costs, which must be raised after a catastrophe to restore the original state of buildings and infrastructure. Thus, the need for reconstruction together with the financial influx from disaster relief and insurance payouts might create a boom. As a consequence some economic sectors might even experience positive effects after natural disasters, e. g., retail and construction. 170 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Nitrogen oxides are a major threat to human health and largely released by Diesel engines. The present book describes the preparation and characterization of appropriate catalyst systems for low temperature removal (150 ¿ 400°C) and conversion of nitrogen oxides.The presented catalysts include commercially available activated carbon and zeolite supports, infiltrated with iron, copper, manganese and their oxides. The investigated catalysts adsorb and convert nitrogen dioxide almost completely and convert it quickly subsequently into the less toxic nitric oxide and nitrous oxide. Some eventually release nitrogen and oxygen, thus outperforming even the well-known Cu-ZSM-5 catalyst at low temperature. Stickoxide zählen zu den wichtigsten Umweltgiften und werden zu einem großen Anteil durch Dieselmotoren freigesetzt. Dieses Buch beschreibt die Herstellung und Charakterisierung von Katalysatorsysteme für die Niedertemperatur-Umsetzung (150 ¿ 400°C) von Stickoxiden. Zu den vorgestellten Katalysatoren gehören kommerziell verfügbare Aktivkohle und Zeolith-Materialien, welche mit Eisen, Kupfer, Mangan und deren Oxiden infiltriert wurden. Alle untersuchten Katalysatorsysteme absorbieren Stickoxide rasch und setzen diese anschließend fast vollständig in die weit weniger toxischen Gase Stickstoffmonoxid und Distickstoffmonoxid um. Einige der untersuchten Katalysatorsystemen setzen schließlich Sauerstoff und Stickstoff frei und zeigen bei niedrigen Temperaturen sogar eine bessere Performance als der bereits gut bekannte Cu-ZSM-5 Katalysator. 174 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Low genetic diversity in cauliflower is one of the big challenges that hinders plant breeders in developing cultivars that meet the different needs of farmers (high yield, high adaptation and resistance to biotic and abiotic stresses) and consumers (high quality). The most efficient way to improve the performance of cauliflower varieties is to access large, diverse pools of genetic material of this crop. Therefore, the overall aims of this thesis have been to assess the phenotypic and genotypic diversity of a broad collection of genebank cauliflower accessions, as well as to perform association mapping and genomic prediction on this crop. This study evaluated the performance of 200 genebank accessions of cauliflower at two farming system (organic and conventional) and over three growing seasons and genotyped them by genotyping by sequencing approach (GBS) to infer the population structure and genetic diversity. Also, this study investigated the potential of different modern molecular breeding methods in cauliflower , association mapping and genomic selection. The findings laid out in this thesis show that GBS could be used effectively for several tasks in the commercial improvement of cauliflower in particular and in B. oleraceae in general, without the need for imputation of missing values. These tasks include genetic diversity analysis, marker trait association and genomic prediction. Also, the current thesis affirms that both association mapping and genomic prediction have the potential to accelerate the genetic gain in cauliflower breeding programs. In addition, several promising genetic materials (for high yield and stability) were found, which could be used as starting materials in cauliflower breeding programs, and especially for organic farming. 184 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -GaN three-dimensional columnar core-shell LEDs are considered to be one of the promising candidates for prospective solid state lighting. In comparison to conventional planar layer LEDs, columnar core-shell LEDs have many advantages. For instance, in a columnar GaN coreshell LED structure the InGaN/GaN MQW wraps around the column, therefore the light emitting area can be enormously increased. This is the main driving force behind the intense investigation of nanowire and micro-columnar LEDs. In addition, because of the increased area of the MQW, the internal quantum efficiency may be improved by a reduction of the local carrier density, mitigating the efficiency droop. Besides, due to the reduced influence of thermal and lattice mismatch between the substrate and columns, dislocation-free GaN column arrays can be achieved on large area substrates.The main contribution of the present work is the controlled growth of GaN columns and core-shell LEDs by metal-organic vapor-phase expitaxy. The growth conditions which lead to vertical growth of N-polar and Ga-polar GaN columns are systematically investigated. The causes of the vertical growth are explained by surface processes under appropriate conditions for both polarities. Quantitative discussions of growth kinetics of GaN columns are an important feature in this work. The difficulties and the strategies of the MQW and p-GaN shell growth on high aspect ratio GaN columns are presented in detail. 186 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -In this work, the attempt is made to explore and understand the interaction between different institutions in environmental governance, and the role of human livelihood strategies in this interaction. With a case study of teak farming and sand winning in the Dormaa Municipality and Dormaa East district in midwestern Ghana, the work seeks to contribute to understanding the dynamics and role of institutions and human behaviour relationship in environmental governance. The study has been formulated and conducted following some observations of interaction between statutory and customary institutions in regulating human activities on the natural environment in Dormaa. Prior to this study, observations of this author in some communities in the Dormaa Municipality and Dormaa East district showed that statutory and customary environmental governance institutions influenced each other to shape the ways different people acted on the natural environment. Moreover, it was observed that the actions of people in turn influenced how these institutions functioned and affected each other. 252 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This dissertation makes three contributions on local governance issues and public sector reforms. First, it explores a trade-off in the incentive effects induced by competitive funding schemes such as performance-budgeting or conditional grants. Using a game theoretical model, it is shown how efficiency enhancing effects and wasteful window-dressing incentives affect social welfare. The model derives important normative conclusions for the design of such funding schemes and discusses the advantages and drawbacks of different performance measures. Two empirical studies address the determinants and efficiency effects of intermunicipal cooperation among Hessian municipalities. Using survey data from Hessian municipalities, the author assesses how different municipal characteristics affect the occurrence of intermunicipal cooperation in labor-intensive administration services. The study places an emphasis on neighborhood specific factors. Using data from the municipal wastewater sector, the third study investigates efficiency effects of intermunicipal cooperation. The results from a nonparametric approach of efficiency analysis reveal that especially small municipalities may benefit from cooperation whereas medium-sized municipalities operate at efficient scale. It is likely, that X-inefficiencies and transaction costs outweigh cooperation gains from scale. 204 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Die Belagbildung bei der thermischen Behandlung von Milch und Milchprodukten ist ein ernsthaftes Problem der milchverarbeitenden Industrie. Hier spielt die Oberflächenbeschaffenheit eine entscheidende Rolle, da der Beginn der Ansatzbildung bis zur kompletten Belegung der Oberfläche und die Ablösung von dem resultierten Belag von der Wechselwirkung zwischen Produkt und Oberfläche beeinflusst wird.Deswegen wurde in Rahmen dieser Arbeit die Effekte der energetischen und topographischen Oberflächeneigenschaften von amorphen kohlenstoffbasierten Beschichtungen (DLC) auf die Belagbildung und Reinigung von Milchkomponenten untersucht. Darüber hinaus wurde die Modellösungszusammensetzung sowie die initialen Oberflächentemperatur und Strömungsverhältnis variiert. Die statistische Betrachtung der Ergebnisse zeigt, dass die Wechselwirkung der variierten Paremetern die Belagsbildung, -zusammensetzung, -struktur und ¿eigenschaften beeinflusst. Reinigungsprofile waren auch von den Oberflächeneigenschaften abhängig. Optimale Basekomponenten der freien Oberflächenenergie ¿ ¿ für ein minimales Fouling im Batch und unter kontinuierlichen Strömungsbedingungen sowie für einen minimalen Reinigungsaufwand wurden vorgeschlagen. 230 pp. Deutsch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -In 2015, the European Union is not going well. But does this mean that Europe is not going well More and more citizens of the European States make it very clear that they have another opinion about political participation as just to confer to the leaders of political parties a procedural legitimacy. Considering the epochal challenges (e.g. the migration from Africa) and the simultaneously increasing credibility deficit, the political establishment becomes ever more alienated from the citizens when staging ¿Europe Events¿, without taking the European Civil Societies seriously as political partners. The present contributions have the intention to examine the situation of national Civil Societies in Europe and if one can speak of a comprehensive European Civil Society.Im Jahr 2015 geht es der Europäischen Union schlecht. Aber geht es deshalb Europa schlecht Die Bürger der europäischen Staaten machen zunehmend deutlich, dass sie ihre politische Mitwirkung anders verstehen, als dem Führungspersonal der Parteien eine prozedurale Legitimität zu verleihen. Angesichts epochaler Herausforderungen (z.B. die Migration aus Afrika) bei einem gleichzeitig wachsenden Glaubwürdigkeitsdefizit entfremdet es die politische Ebene noch mehr von den Bürgern, wenn ¿Europa-Events¿ inszeniert werden, ohne die Bürgergesellschaften politisch ernst zu nehmen. Die vorliegenden Beiträge haben das Ziel zu prüfen, wie es um die nationalen Bürgergesellschaften Europas bestellt ist und ob von einer übergreifenden europäischen Bürgergesellschaft gesprochen werden kann. 276 pp. Deutsch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The ecological usage of wood as a carbon store, a substitute for fossil-intensive materials, and a direct alternative for fossil fuels has garnered tremendous attention. A variety of public and private activities therefore aim to increase the efficient usage of wood in networks. Because inter-organizational IT can play an important role in the efficient utilization of wood, the overall goal of this dissertation thesis is to provide practitioners, policy makers, and researchers with deep insights into how to effectively promote and use inter-organizational IT in the wood industry. This cumulative dissertation is the results of a research project at the DFG Resource Training Group 1703 ¿Resource Efficiency in Interorganizational Networks¿ and the Chair of Information Management at the University of Göttingen. It presents eight studies in the fields of adoption, value co-creation, and governance of inter-organizational IT, encompassing a rich data set of 19 interviews and 833 questionnaires. The theoretical and practical insights gained from the data analysis enable policy makers to effectively promote inter-organizational IT for the wood industry and allow practitioners in wood networks to effectively design their IT usage, IT processes, and IT governance. Researchers find a variety of new avenues for studying the phenomena of IT non-adoption under consideration of industry specifics, IT-based value co-creation through the lens of inter-organizational IT alignment, and distinct modes of effective IT network governance. 264 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The knowledge of behavior of liquids with free surfaces to their surrounding gaseous phase in compensated gravity is essential to the development of tank systems for spacecrafts. In microgravity, the liquid behavior is dominated by capillary forces, which are used to position and redistribute liquid propellant in a desired way for the mission. The body forces occurring due to residual accelerations, which can be caused by spin during the ballistic flight phases, force the liquid to reorient towards a new equilibrium state of the free surface. Due to spin the liquid is driven away from the tank outlet and located along tank walls in partially filled tanks. To assure enough liquid fuel over the tank outlet, so-called Propellant Management Devices (PMD¿s), are employed. A PMD is a static, usually metal structure, which either provides a passage way for a liquid in microgravity or stores a certain amount of liquid at a desired location. Some PMD¿s are designed to be refillable in periods of microgravity due to openings in the outer housing or by a housing composed of perforated metallic sheets. These reservoirs are refilled in periods of compensated gravity in order to provide the required amount of liquid fuel for attitude control or other maneuverings. Relatively large disturbances, such as lateral accelerations and spin, can drive the liquid fuel out of the reservoir, resulting in malfunction of the device. During spilling, gas enters the device such that only a residual amount of liquid propellant can be kept in the reservoir. Moreover, the connection to the bulk liquid in the tank may be interrupted such that refilling of the reservoir is disrupted. Hence, a PMD with two parallel disks forming the inlet and a venting tube at the topmost point of the outer housing shall be designed such that its refillable structure is only filled with liquid without any gas or vapor being easily trapped during operations. 286 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -This work presents a high-linearity automotive radar front-end at 77 GHz in 0.25 ¿m SiGe technology. The passive elements were realized using thin-film microstrip lines. A detailed transformer balun synthesis procedure was developed. The realized passive baluns ('rat-race' and transformer) show excellent commonmode rejection ratios exceeding 30 dB and low losses of 2.5 dB. On the active side, a low-gain, high-linearity single stage common-emitter LNA was realized. The selected topology allowed finer trade-off between linearity and sensitivity of the front-end compared to multi-stage LNA solutions. For the mixer, a low-voltage supply, high-linearity, low-noise double-balanced concept was employed. It uses AC-coupling between the two stages, which allowed an independent optimization of transconductance, core sizing, and bias. The transconductance was designed for best noise performance, while the core was chosen for maximum linearity.A high-fidelity two-channel receiver was realized using these circuit components, which achieved a performance comparable to the published state-of-the-art results in SiGe: Single sideband noise figure better than 16.5 dB, 1 dB compression point exceeding -12 dBm, while consuming moderate 82 mA DC current from a 1.6 V supply for both channels.Cuvillier Verlag, Nonnenstieg 8, 37075 Göttingen 176 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Due to its adaptation to extremely harsh environments, pearl millet (Pennisetum glaucum (L) R. Br.) is one of the most important staple cereals cultivated in the arid and semi-arid tropics of Asia and Africa. In these regions pearl millet is mainly produced under low-input, rainfed conditions in traditional farming systems, where several constrains are affecting pearl millet production, such as inter-annual rainfall variability, pests, diseases, Striga and use of low yielding varieties. The majority of the human population in these regions is affected by nutritional deficiencies of essential minerals causing micronutrient malnutrition (so-called 'hidden hunger'). Plant genetic resources provide basic materials for selection and improvement of crop productivity through the optimal design of breeding programs to meet food security needs of the world's rapidly rising population. The advent of PCR-based molecular markers such as simple sequence repeats (SSRs) has created an opportunity for fine-scale genetic characterization of germplasm collections. Understanding the structure of diversity and the identification of distinct materials with complementary traits for recombination by crossing provides the foundation for effective and sustained pearl millet population breeding and synthetic and hybrid development, based on the concept of heterotic groups in this allogamous crop.Cuvillier Verlag, Nonnenstieg 8, 37075 Göttingen 142 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -In recent decades the frequency and severity of natural disasters increased. This development is accompanied by an increase in catastrophe related economic losses and is assumed to continue for the foreseeable future if effective disaster mitigation efforts are omitted. Due to the massive destruction of physical assets the basis for economic losses are generally reconstruction costs, which must be raised after a catastrophe to restore the original state of buildings and infrastructure. Thus, the need for reconstruction together with the financial influx from disaster relief and insurance payouts might create a boom. As a consequence some economic sectors might even experience positive effects after natural disasters, e. g., retail and construction.Cuvillier Verlag, Nonnenstieg 8, 37075 Göttingen 170 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Nitrogen oxides are a major threat to human health and largely released by Diesel engines. The present book describes the preparation and characterization of appropriate catalyst systems for low temperature removal (150 - 400°C) and conversion of nitrogen oxides.The presented catalysts include commercially available activated carbon and zeolite supports, infiltrated with iron, copper, manganese and their oxides. The investigated catalysts adsorb and convert nitrogen dioxide almost completely and convert it quickly subsequently into the less toxic nitric oxide and nitrous oxide. Some eventually release nitrogen and oxygen, thus outperforming even the well-known Cu-ZSM-5 catalyst at low temperature.Stickoxide zählen zu den wichtigsten Umweltgiften und werden zu einem großen Anteil durch Dieselmotoren freigesetzt. Dieses Buch beschreibt die Herstellung und Charakterisierung von Katalysatorsysteme für die Niedertemperatur-Umsetzung (150 - 400°C) von Stickoxiden. Zu den vorgestellten Katalysatoren gehören kommerziell verfügbare Aktivkohle und Zeolith-Materialien, welche mit Eisen, Kupfer, Mangan und deren Oxiden infiltriert wurden. Alle untersuchten Katalysatorsysteme absorbieren Stickoxide rasch und setzen diese anschließend fast vollständig in die weit weniger toxischen Gase Stickstoffmonoxid und Distickstoffmonoxid um.Einige der untersuchten Katalysatorsystemen setzen schließlich Sauerstoff und Stickstoff frei und zeigen bei niedrigen Temperaturen sogar eine bessere Performance als der bereits gut bekannte Cu-ZSM-5 Katalysator.Cuvillier Verlag, Nonnenstieg 8, 37075 Göttingen 174 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -GaN three-dimensional columnar core-shell LEDs are considered to be one of the promising candidates for prospective solid state lighting. In comparison to conventional planar layer LEDs, columnar core-shell LEDs have many advantages. For instance, in a columnar GaN coreshell LED structure the InGaN/GaN MQW wraps around the column, therefore the light emitting area can be enormously increased. This is the main driving force behind the intense investigation of nanowire and micro-columnar LEDs. In addition, because of the increased area of the MQW, the internal quantum efficiency may be improved by a reduction of the local carrier density, mitigating the efficiency droop. Besides, due to the reduced influence of thermal and lattice mismatch between the substrate and columns, dislocation-free GaN column arrays can be achieved on large area substrates.The main contribution of the present work is the controlled growth of GaN columns and core-shell LEDs by metal-organic vapor-phase expitaxy. The growth conditions which lead to vertical growth of N-polar and Ga-polar GaN columns are systematically investigated. The causes of the vertical growth are explained by surface processes under appropriate conditions for both polarities. Quantitative discussions of growth kinetics of GaN columns are an important feature in this work. The difficulties and the strategies of the MQW and p-GaN shell growth on high aspect ratio GaN columns are presented in detail.Cuvillier Verlag, Nonnenstieg 8, 37075 Göttingen 186 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Low genetic diversity in cauliflower is one of the big challenges that hinders plant breeders in developing cultivars that meet the different needs of farmers (high yield, high adaptation and resistance to biotic and abiotic stresses) and consumers (high quality). The most efficient way to improve the performance of cauliflower varieties is to access large, diverse pools of genetic material of this crop. Therefore, the overall aims of this thesis have been to assess the phenotypic and genotypic diversity of a broad collection of genebank cauliflower accessions, as well as to perform association mapping and genomic prediction on this crop.This study evaluated the performance of 200 genebank accessions of cauliflower at two farming system (organic and conventional) and over three growing seasons and genotyped them by genotyping by sequencing approach (GBS) to infer the population structure and genetic diversity. Also, this study investigated the potential of different modern molecular breeding methods in cauliflower , association mapping and genomic selection.The findings laid out in this thesis show that GBS could be used effectively for several tasks in the commercial improvement of cauliflower in particular and in B. oleraceae in general, without the need for imputation of missing values. These tasks include genetic diversity analysis, marker trait association and genomic prediction. Also, the current thesis affirms that both association mapping and genomic prediction have the potential to accelerate the genetic gain in cauliflower breeding programs. In addition, several promising genetic materials (for high yield and stability) were found, which could be used as starting materials in cauliflower breeding programs, and especially for organic farming.Cuvillier Verlag, Nonnenstieg 8, 37075 Göttingen 184 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -This dissertation makes three contributions on local governance issues and public sector reforms. First, it explores a trade-off in the incentive effects induced by competitive funding schemes such as performance-budgeting or conditional grants. Using a game theoretical model, it is shown how efficiency enhancing effects and wasteful window-dressing incentives affect social welfare. The model derives important normative conclusions for the design of such funding schemes and discusses the advantages and drawbacks of different performance measures. Two empirical studies address the determinants and efficiency effects of intermunicipal cooperation among Hessian municipalities. Using survey data from Hessian municipalities, the author assesses how different municipal characteristics affect the occurrence of intermunicipal cooperation in labor-intensive administration services. The study places an emphasis on neighborhood specific factors. Using data from the municipal wastewater sector, the third study investigates efficiency effects of intermunicipal cooperation. The results from a nonparametric approach of efficiency analysis reveal that especially small municipalities may benefit from cooperation whereas medium-sized municipalities operate at efficient scale. It is likely, that X-inefficiencies and transaction costs outweigh cooperation gains from scale.Cuvillier Verlag, Nonnenstieg 8, 37075 Göttingen 204 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -In this work, the attempt is made to explore and understand the interaction between different institutions in environmental governance, and the role of human livelihood strategies in this interaction. With a case study of teak farming and sand winning in the Dormaa Municipality and Dormaa East district in midwestern Ghana, the work seeks to contribute to understanding the dynamics and role of institutions and human behaviour relationship in environmental governance. The study has been formulated and conducted following some observations of interaction between statutory and customary institutions in regulating human activities on the natural environment in Dormaa. Prior to this study, observations of this author in some communities in the Dormaa Municipality and Dormaa East district showed that statutory and customary environmental governance institutions influenced each other to shape the ways different people acted on the natural environment. Moreover, it was observed that the actions of people in turn influenced how these institutions functioned and affected each other.Cuvillier Verlag, Nonnenstieg 8, 37075 Göttingen 252 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Die Mikroskopie fossiler und rezenter Kleinstlebewesen stellt ein bedeutendes Teilgebiet der Biologie und Paläontologie dar, dessen Etablierung in den biologischen Wissenschaften Hand in Hand mit der Entwicklung von Licht- und Elektronenmikroskop ging. Gerade die seit den 1960er Jahren stetig im Aufstieg begriffene Mikropaläontologie ist für die Fossilienkunde zu einer unverzichtbaren Disziplin avanciert, lassen sich mit ihrer Hilfe doch die klimatischen Bedingungen früherer Erdzeitalter oder die exakten geografischen Positionen der Kontinente im Laufe der mittleren bis jüngeren Erdgeschichte rekonstruieren. In der Rohstoffexploration leistet die Mikropaläontologie ihren Beitrag zur Lokalisierung von Erdöl- und Erdgaslagern. Das Buch gibt einen Überblick über die mikroskopische Erforschung von ausgewählten Kleinstlebewesen, welche in der Paläontologie großteils den Rang von Leitfossilien bekleiden. Neben den wesentlichen, hinter der Mikroskopie stehenden Präparationstechniken sollen dabei vor allem Aspekte der Lebensweise dieser Organismen und deren biostratigrafische Signifikanz zur Vorstellung gelangen. Das Buch ist gleichermaßen als Lektüre für Fachleute und Hobbymikroskopiker gedacht, weshalb von der komplexen Fachsprache größtenteils Abstand genommen wird. 130 pp. Deutsch.

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Die Belagbildung bei der thermischen Behandlung von Milch und Milchprodukten ist ein ernsthaftes Problem der milchverarbeitenden Industrie. Hier spielt die Oberflächenbeschaffenheit eine entscheidende Rolle, da der Beginn der Ansatzbildung bis zur kompletten Belegung der Oberfläche und die Ablösung von dem resultierten Belag von der Wechselwirkung zwischen Produkt und Oberfläche beeinflusst wird.Deswegen wurde in Rahmen dieser Arbeit die Effekte der energetischen und topographischen Oberflächeneigenschaften von amorphen kohlenstoffbasierten Beschichtungen (DLC) auf die Belagbildung und Reinigung von Milchkomponenten untersucht. Darüber hinaus wurde die Modellösungszusammensetzung sowie die initialen Oberflächentemperatur und Strömungsverhältnis variiert. Die statistische Betrachtung der Ergebnisse zeigt, dass die Wechselwirkung der variierten Paremetern die Belagsbildung, -zusammensetzung, -struktur und -eigenschaften beeinflusst. Reinigungsprofile waren auch von den Oberflächeneigenschaften abhängig. Optimale Basekomponenten der freien Oberflächenenergie ¿ - für ein minimales Fouling im Batch und unter kontinuierlichen Strömungsbedingungen sowie für einen minimalen Reinigungsaufwand wurden vorgeschlagen.Cuvillier Verlag, Nonnenstieg 8, 37075 Göttingen 230 pp. Deutsch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Die Informationstechnische Gesellschaft im VDE vertreten durch die ITG-Fachgruppe 5.3.2 ¿Photonische Komponenten und Mikrosysteme¿ und die Hochschule Harz in Wernigerode, werden am 20. Mai 2015 von 10-17:00 einen Workshop ausrichten, zu dem wir interessierte Experten aus Wissenschaft und Industrie herzlich einladen. International angesehene key note speaker berichten über zukünftige Trends und Entwicklungen im Bereich der photonischen Komponenten und Aufbautechnik für optische Sensorik, optische Nachrichtentechnik und Silicon Photonics berichten. 138 pp. Deutsch.

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -The ecological usage of wood as a carbon store, a substitute for fossil-intensive materials, and a direct alternative for fossil fuels has garnered tremendous attention. A variety of public and private activities therefore aim to increase the efficient usage of wood in networks. Because inter-organizational IT can play an important role in the efficient utilization of wood, the overall goal of this dissertation thesis is to provide practitioners, policy makers, and researchers with deep insights into how to effectively promote and use inter-organizational IT in the wood industry. This cumulative dissertation is the results of a research project at the DFG Resource Training Group 1703 'Resource Efficiency in Interorganizational Networks' and the Chair of Information Management at the University of Göttingen. It presents eight studies in the fields of adoption, value co-creation, and governance of inter-organizational IT, encompassing a rich data set of 19 interviews and 833 questionnaires. The theoretical and practical insights gained from the data analysis enable policy makers to effectively promote inter-organizational IT for the wood industry and allow practitioners in wood networks to effectively design their IT usage, IT processes, and IT governance. Researchers find a variety of new avenues for studying the phenomena of IT non-adoption under consideration of industry specifics, IT-based value co-creation through the lens of inter-organizational IT alignment, and distinct modes of effective IT network governance.Cuvillier Verlag, Nonnenstieg 8, 37075 Göttingen 264 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -In 2015, the European Union is not going well. But does this mean that Europe is not going well More and more citizens of the European States make it very clear that they have another opinion about political participation as just to confer to the leaders of political parties a procedural legitimacy. Considering the epochal challenges (e.g. the migration from Africa) and the simultaneously increasing credibility deficit, the political establishment becomes ever more alienated from the citizens when staging 'Europe Events', without taking the European Civil Societies seriously as political partners. The present contributions have the intention to examine the situation of national Civil Societies in Europe and if one can speak of a comprehensive European Civil Society.Im Jahr 2015 geht es der Europäischen Union schlecht. Aber geht es deshalb Europa schlecht Die Bürger der europäischen Staaten machen zunehmend deutlich, dass sie ihre politische Mitwirkung anders verstehen, als dem Führungspersonal der Parteien eine prozedurale Legitimität zu verleihen. Angesichts epochaler Herausforderungen (z.B. die Migration aus Afrika) bei einem gleichzeitig wachsenden Glaubwürdigkeitsdefizit entfremdet es die politische Ebene noch mehr von den Bürgern, wenn 'Europa-Events' inszeniert werden, ohne die Bürgergesellschaften politisch ernst zu nehmen. Die vorliegenden Beiträge haben das Ziel zu prüfen, wie es um die nationalen Bürgergesellschaften Europas bestellt ist und ob von einer übergreifenden europäischen Bürgergesellschaft gesprochen werden kann.Cuvillier Verlag, Nonnenstieg 8, 37075 Göttingen 276 pp. Deutsch.

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -The knowledge of behavior of liquids with free surfaces to their surrounding gaseous phase in compensated gravity is essential to the development of tank systems for spacecrafts. In microgravity, the liquid behavior is dominated by capillary forces, which are used to position and redistribute liquid propellant in a desired way for the mission. The body forces occurring due to residual accelerations, which can be caused by spin during the ballistic flight phases, force the liquid to reorient towards a new equilibrium state of the free surface. Due to spin the liquid is driven away from the tank outlet and located along tank walls in partially filled tanks. To assure enough liquid fuel over the tank outlet, so-called Propellant Management Devices (PMD's), are employed. A PMD is a static, usually metal structure, which either provides a passage way for a liquid in microgravity or stores a certain amount of liquid at a desired location. Some PMD's are designed to be refillable in periods of microgravity due to openings in the outer housing or by a housing composed of perforated metallic sheets. These reservoirs are refilled in periods of compensated gravity in order to provide the required amount of liquid fuel for attitude control or other maneuverings. Relatively large disturbances, such as lateral accelerations and spin, can drive the liquid fuel out of the reservoir, resulting in malfunction of the device. During spilling, gas enters the device such that only a residual amount of liquid propellant can be kept in the reservoir. Moreover, the connection to the bulk liquid in the tank may be interrupted such that refilling of the reservoir is disrupted. Hence, a PMD with two parallel disks forming the inlet and a venting tube at the topmost point of the outer housing shall be designed such that its refillable structure is only filled with liquid without any gas or vapor being easily trapped during operations.Cuvillier Verlag, Nonnenstieg 8, 37075 Göttingen 286 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Strömungen treten in allen Bereichen der Natur und der Technik auf. In der Natur sind Strömungen lebensnotwendig. Menschen und Tiere benötigen einen Blutkreislauf, um den Körper mit wichtigen Nährstoffen zu versorgen, Lebewesen benötigen Wasser und Luft, um zu leben. Strömungen gibt es auch in der Atmosphäre, in Flüssen und in den Ozeanen. Auf den Planeten und in den Galaxien gibt es auch Strömungen, wie z.B. die Wirbelströmungen der Spiralarme der Spiralgalaxien. In derTechnik dienen Strömungen dazu, Maschinen und Anlagen zu betreiben, Stoff, Wärme und Energie zu übertragen, Schub und Auftrieb zu erzeugen und Widerstandzu leisten (Durst 5). Ohne Schub und ohne Auftrieb wäre z.B. die Luftfahrt nicht möglich. 146 pp. Deutsch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Um die Energieversorgung bei knapper werdenden Rohstoffen für die Zukunft zu sichern und gleichzeitig den Ausstoß an CO2 zu verringern, hat Deutschland im Jahr 2000 das Erneuerbare-Energien-Gesetzt eingeführt. Die Photovoltaik (PV) nimmt dabei eine wichtige Rolle ein, da ihr Potential das mit Abstand größte unter den erneuerbaren Energiequellen ist. Um dieses Potential zu nutzen wurden hohe Investitionen in die Grundlagenforschung und in die Entwicklung von PV-Industrietechnik getätigt. Auf diese Weise konnten seit dem Jahr 2000 die Kosten für PV-Strom auf deutschen Hausdächern von ca. 50 ct/kWh auf 11 ct/kWh gesenkt werden. Zur Realisierung dieses Fortschrittes wurden im Wesentlichen zwei Strategien verfolgt. Erstens, die Entwicklung von amorphen Dünnschichttechniken, welche sich durch einen extrem niedrigen Preis, aber auch durch einen geringeren Wirkungsgrad auszeichnen. Zweitens, die Entwicklung von möglichst reinen, kristallinen Siliziumwafern, welche zwar teuer sind, aber einen hohen Wirkungsgrad erreichen.Um die Vorteile der Dünnschichttechnik mit denen von kristallinen Siliziumwafern zu kombinieren, wird die ConCVD (Continuous Chemical-Vapor-Deposition) entwickelt, welche ein Bindeglied zwischen Laboranlage und Industrieanlage darstellt. Um diese Anlage weiterzuentwickeln, musste zunächst die Sicherheit und Zuverlässigkeit erhöht werden. Dazu wurden der Antriebsstrang, die Sensorik, die Wärmeisolation und die Materialeingenschaften des inneren Aufbaus optimiert. Nach diesem klassischen Anlagenbau, musste die Qualität der aufgewachsenen Schichten so weit erhöht werden, dass der Wirkungsgrad mit dem von standart Wafern konkurrieren kann. Hierzu wurde ein Grundlagenmodell entwickelt, welches die Gaszusammensetzung am Ort der Abscheidung und die daraus resultierende Kristallqualität vorhersagen kann. Dieser entscheidende Arbeitsschritt erforderte neben Halbleitercharakterisierung und Prozessoptimierung auch Kristallisationstheorie und Strömungssimulation.Durch das Zusammenspiel von Themengebieten aus der Ingenieurtechnik und der Grundlagenforschung, konnte die Leistungsfähigkeit der ConCVD deutlich gesteigert werden. Zum einen wurden die Schichthomogenität, die Abscheiderate und die Anlagenstabilität auf ein industrielles Niveau gehoben. Zum anderen konnte die Kristallqualität auf das Niveau von Laboranlagen gesteigert werden, was zu einem Anstieg des Solarzellenwirkungsgrades von 5,1% auf 14,1% führte. 146 pp. Deutsch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Das Thema 'Nachhaltige Logistik' wird aus betriebswirtschaftlicher Sicht dargestellt.Betrachtet wird die logistische Prozesskette unter klassischen und nachhaltigen Aspekten: Konstruktion, Einkauf, Lager, Produktion, Distribution und Entsorgung.Beschrieben werden u.a. das Cradle-to-Cradle-Konzept, das nachhaltige Lieferantenmanagement, die RFID-Technologie, nachhaltige Gesichtspunkte der Verkehrsträger Schiff, Bahn, LKW und Flugzeug sowie Rückführungen in den Produktkreislauf.Vom Stil her ist das Buch leicht verständlich geschrieben, so dass es sich nicht nur für Studierende oder Fachleute der Logistik eignet, sondern es kann auch von fachlich interessierten Personen ohne vertiefte Logistikkenntnisse mit Gewinn gelesen werden. 164 pp. Deutsch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Internationale Befunde weisen darauf hin, dass depressive Symptome und Störungen bei Menschen mit Diabetes mellitus gehäuft vorkommen. Diese gesteigerte Depressionsprävalenz lässt sich vermutlich durch diabetesspezifische Belastungsfaktoren erklären, welche sich auf die psychische Gesundheit von Menschen mit Diabetes negativ auswirken. Darüber hinaus werden depressive Störungen bei Diabetes als besonders ungünstige Komorbidität betrachtet, da vermutlich negative psychologische und somatische Wechselwirkungen bestehen, welche in einer schlechteren Prognose des Diabetes hinsichtlich diabetischer Folgekrankheiten sowie der Lebenserwartung resultieren. Da die aktuelle Befundlage allerdings überwiegend dem englischsprachigen Kulturraum entstammt und ihre Generalisierbarkeit auf Deutschland bislang nicht gesichert ist, werden im Rahmen dieser Arbeit Prävalenzen, diabetesspezifische Risikofaktoren sowie negative Auswirkungen depressiver Störungen bei deutschen Personen mit Diabetes anhand umfangreicher Stichproben aus der tertiären Patientenversorgung untersucht. 272 pp. Deutsch.