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The choice of institutions to solve cooperation problems: a survey of experimental research
(2019-11-01)
A growing experimental literature studies the endogenous choice of institutions to solve cooperation problems arising in prisoners’ dilemmas, public goods games, and common pool resource games. Participants in these experiments have the opportunity to influence the rules of the game before they play the game. In this paper, we review the experimental literature of the last 20 years on the choice of institutions and describe what has been learned about the quality and the determinants of institutional choice. Cooperative ...
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Liming effects on reproductive growth and yield components of maize grown on an acid rainforest soil
(2019-12-03)
Maize was planted on limed and unlimed plots to study the effect of soil acidity on reproductive growth and yield components of the crop in Owerri southeastern Nigeria. Eight (8) maize varieties (Factor A) and two lime levels (0 and 2 t ha-1, Factor B) were arranged as a factorial experiment in a randomised complete block design with three replications. The number of days to 50 % anthesis and silking, anthesis-silking interval (ASI), physiological maturity and grain filling duration were measured to determine the ...
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Smallholder goat production in the Namaacha and Moamba districts of southern Mozambique
(Kassel University Press, 2019-01-10)
Goat rearing is one of the most common livestock farming activities in Mozambique and has the potential to play a powerful role in improving the livelihoods of resource-poor farmers. This study was conducted to investigate the status of goat husbandry practices in rural areas of southern Mozambique. Data were collected from a total of 45 smallholder goat keepers in three different villages through questionnaires complemented by interviews. Most households were dependent on crop production and livestock as their main ...
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Farm and farmer capital foster adoption of improved quality agrochemical inputs in the cotton-wheat zone of the Punjab, Pakistan
(2019-12-23)
Adoption of yield-enhancing agricultural inputs fosters agricultural intensification in low-income countries. In Pakistan, initial adoption of agrochemicals is already widespread; the low quality of much of the inputs contributes to severe health, environmental and enduring pest problems, however. While the positive influence of farm capital and farmer capital on initial adoption is well documented, the adoption of improved quality inputs is little researched. We reduce the knowledge gap investigating smallholder ...
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Intermedial verzauselt
(2019-10)
Verschiedentlich hat Sven Regener darauf hingewiesen, dass er seine »Bücher von vorne nach hinten und ohne großen Plan« verfertige, und dieses Verfahren als »spontaneistisches Schreiben« klassifiziert. Mit nicht viel mehr als der folgenden ›Plotangabe‹ habe er sich »bei ›Herr Lehmann‹ auf den Weg gemacht«: »Mann arbeitet in Kneipe, verliebt sich, das geht dann schief, sein bester Freund wird irre und am Ende geht die Mauer auf.« Nicht zuletzt aufgrund dieser Lockerheit, die antiautoritär auf überkomplexe Reißbrettskizzen ...
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„Erzählinstanz ja, Erzähler ungern“
(2019)
In Thilo Refferts Kinderhörspielen Nina und Paul, Leon und Leonie sowie Fünf Gramm Glück wird mit Formen multiperspektivischen und metaleptischen Erzählens, außerdem mit nichtmenschlichen Erzählinstanzen experimentiert. Die jeweils besondere narratologische Faktur wird im Beitrag untersucht und im Kontext des aktuellen Kinderhörspiels diskutiert.
Aufsatz
European Study on heat recovery in non-residential buildings
(2019-08-13)
The HR (heat recovery) is generally assessed very positively from a business and economic point of view. In order to demonstrate this development, a first study will evaluate around 5,000 design data elements. First, the designs are evaluated with the question of how the key efficiency characteristics of the HR have changed throughout the course of the years 2014 to 2017. Afterwards, all relevant design files are subjected to an economic efficiency calculation under defined conditions, in order to determine the ...
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A value chain analysis of baobab (Adansonia digitata L.) products in Eastern and Coastal Kenya
(2019-11-14)
A growing demand for the highly nutritious baobab fruit pulp from Europe and North America raises the question whether the marketing of baobab (Adansonia digitata L.) products could be an opportunity as an income source for rural communities in Kenya, or if the increased demand from overseas would disturb domestic baobab use. To gain an idea of domestic baobab use, a value chain analysis of edible baobab products was performed, using qualitative methods. By using a non-probability sampling, 134 baobab value chain ...
Aufsatz
A Screening Approach for Rapid Qualitative Evaluation of Residual-Stress States – Application to Laser-Hardened Microalloyed Steel
(2019-06-11)
Surface hardening and compressive residual stresses are keys to superior part performance in numerous applications. In this context the development of advanced laser surface treatments for new materials and complex sample shapes is a time con-suming process. Eventually, determination of residual stress states by means of X-ray diffraction in the whole surface and subsurface region, respectively, is one of the main time consuming facors in terms of characterization. In many applications the provision of an adequate ...
Aufsatz
Processing effects on tensile superelastic behaviour of Fe43.5Mn34Al15 ± XNi7.5∓X shape memory alloys
(2019)
Fe₄₃.₅Mn₃₄Al₁₅Ni₇.₅ was introduced in the current decade as a new superelastic alloy with great applicative potential due to: (i) superelastic behaviour over a thermal range of 200°C and (ii) recoverable strains up to 9.7 %. One of the key factors in enhancing the superelastic response of several shape memory alloys (SMAs) is the formation of an oligocrystalline structure, i.e. without triple junctions between grains, which is the result of an abnormal grain growth (AGG) process that can be induced by cyclic heat ...