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Preprint
Do spatial climate messages increase pro-environmental engagement? Evidence from a survey experiment on public transport
(2022)
Using a survey experiment among a special sample composed of art house cinema visitors, we investigate whether spatial climate messages increase subjects’ willingness to pay for an inclusion of public transport fares in cinema tickets as well as their willingness to use public transport in case such a combined ticket is introduced. Based on previous findings, we expect emphasizing the positive impact of public transport usage on the local level to have a greater effect on subjects’ preferences for public transport ...
Aufsatz
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Pyrolytic transformation of indigenous biomass wastes into biochar: an insight into char structure and physicochemical characteristics
(2022-08-20)
Biochar, the product obtained by the pyrolysis of organic materials with little or no available air, acts as a longterm recalcitrant source of organic carbon when applied to soil. In the present study an in-farm method has been standardized for the pyrolytic conversion of four indigenous biomass resources into biochar. The biomass feedstocks viz. bovine bone (BB), coconut shell (CS), rubberwood (RW) and water hyacinth (WH) were dried and subjected to proximate, ultimate, biochemical analysis and were subjected to ...
Aufsatz
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Effect of Cell Morphology on Flexural Behavior of Injection-Molded Microcellular Polycarbonate
(2022-05-19)
The quantitative study of the structure and properties relationship in cellular materials is mostly limited to cell diameter, cell density, skin layer thickness, and cell size distribution. In addition, the investigation of the morphology is generally carried out in two dimensions. Therefore, the
interrelation between morphological properties and mechanical characteristics of the foam structure has remained in an uncertain state. In this study, during the physical foaming process, a foam morphology is locally created ...
Aufsatz
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Hydrogen absorption of ultra-high strength aluminum-silicon coated 22MnB5 steels
(2022-12-30)
The hot forming process allows to produce safety-relevant structural components in the automotive industry with strengths of 1500 MPa and higher. Generally, high strengths make material sensitive to hydrogen embrittlement. The heat treatment in the hot forming process chain is a potential source of diffusible hydrogen for hot-dipped aluminum-silicon coated boron-manganese steels. In the present work, the influence of different process gases and furnace dwell times during the heat treatment was investigated. Humidified ...
Dissertation
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Sustainability of traditional cocoa agroforests in Ghana
(2022)
Cocoa (Theobroma cacao L.) is an important agricultural commodity that is important to the economies of many countries in the world. Due to cocoa’s dependence on fertile forests soils, its production is a major cause of deforestation and soil degradation in producing countries. When grown in agroforestry systems it can conserve biodiversity, sequester carbon (C), and maintain soil fertility. There are many cocoa agroforests which are managed without synthetic agrochemicals. Because organic cocoa certification is now ...
Aufsatz
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Identification of socio-economic characteristics and farmers’ practices affecting rice (Oryza spp.) yields in Benin (West Africa)
(2022-12-28)
Rice (Oryza spp.) is one of the major staple foods in Benin. Benin has increased rice production through the expansion of cultivation area rather than increasing rice yields. To better understand the factors affecting rice yields, a thorough understanding of the current rice production system characteristics and constraints is required. The present study identifies socio-economic characteristics and farmers’ practices affecting rice yields and suggests improved cultivation practices in the sector. Data were collected ...
Bachelorarbeit
Planungshilfen zur Geschwisterkalbhaltung – Management und Kostenkalkulationen
(2022)
Im Rahmen der vorliegenden Bachelorarbeit wurden Planungshilfen entwickelt, die die praktische Umsetzung der Geschwisterkalbhaltung auf Milchvieh- oder Kooperationsbetrieben erleichtern sollen. Dabei sollen zum einen die Betriebsleiter*innen bei der Erarbeitung von betriebsspezifischen Szenarien für die potenzielle Geschwisterkalbhaltung unterstützt und zum anderen eine Berechnung der mit der Umsetzung verbundenen Kosten ermöglicht werden. Als Basis für die Entwicklung der Planungshilfen diente eine Literaturstudie. ...
Buch
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Statik und Einflussfunktionen - vom modernen Standpunkt aus
(2022-01-06)
Darstellung der rechnerorientierten Statik mit besonderer Betonung der Rolle der Einflussfunktionen für die moderne Statik:
Den Anstoß zu dem Buch gab die Erkenntnis, dass die Methode der finiten Elemente ein Rechnen mit genäherten Einflussfunktionen ist. Ein klassisches Thema der Baustatik ist mit den finiten Elementen wieder auferstanden. Das war zunächst überraschend, aber es war dann Anlass die Grundlagen der Statik aus der Sicht der computational mechanics neu zu überdenken. Mit computational mechanics meinen ...
Dissertation
Maßnahmen zum sozialverträglichen Wiederaufbau der zerstörten Wohngebäude in den informellen Siedlungen in Aleppo unter Würdigung historisch gewachsener Strukturen basierend auf soziokulturellen, planerischen, ökonomischen und baurechtlichen Aspekten.
(2022)
Durch den Bürgerkrieg wurden Teile im Osten Aleppos und insbesondere die sogenannten informellen Siedlungen, die einen Beitrag zur Wohnraumversorgung für etwa 1,00 bis 1,25 Mio. Menschen in Aleppo geleistet haben, am stärksten zerstört. Diese Zerstörungen stellen den Ausgangspunkt der vorliegenden Arbeit dar. Im Vergleich zum modernen Westen Aleppos, in dem freigestellte, zu Blöcken geordnete Mehrfamilienhäuser das Straßenbild bestimmen, sind die informellen Siedlungen als selbstorganisierte Siedlungen im Ostteil ...
Aufsatz
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Income and price elasticities of animal food demand and welfare in Indonesian urban: an application of the LA-AIDS
(2022-12-30)
Protein consumption can be a measure of the welfare of society. Developed countries consume more protein than developing countries. This study analyzes the effect of rising prices and income on demand and welfare in urban Indonesia. The research data use the 2018 Household National Socio-Economic Survey (Susenas) data in household consumption and expenditure data collected by the Central Statistics Agency (BPS). The number of samples is 133,873 households. The demand systems approach uses the Almost Ideal Demand ...