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To successfully support private sector development in Africa by the use of trade and export promotion instruments, a comprehensive policy framework is crucial. Different institutional setups for development support show different levels of resilience and effectiveness in coping with the economic conditions they are exposed to. However, there is strong evidence that managing the interplay of three fundamental building blocks – public policy, focus areas, strategic objectives and critical success factors as well as institutions, is the key to crafting sustainable and responsive economies. Export plays a significant role in the national economy, and innovative and integrated government financing instruments have to successfully support the competitiveness of national companies in the global economy. Financing and supporting foreign trade with private businesses in Africa occupies a pivotal role, impacting from new product development and job creation in developed countries through economic growth and human development in African countries.
Nickel cobalt aluminum oxide (NCA) based lithium-ion battery electrodes exhibit a distinct asymmetry in discharge/charge behavior towards high bulk stoichiometry (low state of charge). We show that basic electrochemical relationships, that is, the Nernst equation and the Butler-Volmer equation, are able to reproduce this behavior when a two-step reaction mechanism is assumed. The two-step mechanism consists of (1) lithium-ion adsorption from the electrolyte onto the active material particle surface under electron transfer, and (2) intercalation of surface-adsorbed lithium atoms into the bulk material. The asymmetry of experimental half-cell data of an NCA electrode cycled at 0.1 C-rate can be quantitatively reproduced with this simple model. The model parameters show two alternative solutions, predicting either a saturated (highly-covered) or a depleted surface for high bulk lithiation.
Institute of Reliable Embedded Systems and Communication Electronics, Offenburg University of Applied Sciences, Germany has developed an automated testing environment, Automated Physical TestBeds (APTB), for analyzing the performance of wireless systems and its supporting protocols. Wireless physical networking nodes can connect to this APTB and the antenna output of this attaches with the RF waveguides. To model the RF environment this RF waveguides then establish wired connection among RF elements like splitters, attenuators and switches. In such kind of set up it’s well possible to vary the path characteristics by altering the attenuators and switches. The major advantage of using APTB is the possibility of isolated, well controlled, repeatable test environment in various conditions to run statistical analysis and even to execute regression tests. This paper provides an overview of the design and implementation of APTB, demonstrates its ability to automate test cases, and its efficiency.
BiCI users’ sensitivity to interaural phase differences for single- and multi-channel stimulation
(2016)
Bildnisverwertungsklauseln
(2016)