513 research outputs found
Dr. Steele remembered as great teacher, friend and author
No full textArticle in the Johnson C. Smith Newsletter regarding the death of A.O. Steele
PROBLEMS OF DETERMINING THE BALANCE OF RIGHTS BETWEEN THE AUTHOR AND THE SOCIETYABOUT THE USE OF INTELLECTUAL PROPERTY IN THE HISTORY OF LEGAL STUDIES
No full textThe article is dedicated to the problem of defining the boundaries of fair use of the composition. By the end of the 18th century compositions became unique and original. Authorship wasn't evaluated from the standpoint of traditionalism. It was connected with genius of the author, originality of creativity. Philosophers, for example I. Kant, J. G. Fichte, G. W. F. Hegel, started considering the concepts of author, ideas, and forms of the composition. The article explains what the idea and form is, comparison of these concepts, and why forms of the composition should be protected by law while the idea can be spread easily. Also the article explains the factors and legal grounds of non-classical concept's appearance due to the increasing complexity of public relations
Heteronanocrystal Transformations through In-situ Transmission Electron Microscopy
No full textSynthesis of nanocrystals (NCs) and heteronanocrystals (HNCs) has developed very fast particularly in the last decade. Nowadays, various structures and different morphologies of NCs and HNCs can be prepared with a very narrow size distribution. The nanoscale dimensions of these crystals lead to interesting phenomena (e.g. electronic properties) that are not found in their bulk counterparts. Therefore, NC and HNC research is now a hot topic in materials science and applied physics. Despite having interesting properties, the stability of NCs and HNCs is an issue outside the solution in which they are suspended. This raises a concern for their potential applications. Regarding their thermal stability, a number of studies have been reported showing morphological as well as chemical transformations with changing temperature. In this thesis, the focus is on in-situ heat induced transformations of HNCs and detailed characterization of these transformations through advanced transmission electron microscopy (TEM) techniques. Two processes were observed through in-situ heat treatment of the CdSe–CdS–ZnS core–multishell system: diffusion and simultaneous evaporation of different species. The structure evolves into a CdxZn1?xSe–CdyZn1?yS core–shell system through Zn inner diffusion and simultaneous partial evaporation of Cd and S. A more complex transformation is a temperature induced reconfiguration in the FexO/CoFe2O4 core/shell system. In this case, the FexO diffuses out of the core location and segregates at the outside of the CoFe2O4 shell. At the same time, the CoFe2O4 shell shrinks and fills the core volume. Co diffusion into the FexO structure is also observed with heating. Furthermore, in-situ heating studies of the CdSe-PbSe dumbbell system (a CdSe nanorod with PbSe NC tips) have shown a novel epitaxial nanowire growth process. Upon heating, PbSe starts to grow into CdSe with simultaneous Cd evaporation. This process proceeds as a cation exchange mechanism, whereby Pb is replacing Cd in CdSe. The crystal structure changes epitaxially at the same time from hexagonal wurtzite (CdSe) to cubic rock-salt (PbSe). Considering that the initial phases of CdSe and PbSe domains are solid and the final evaporation of Cd into the vapor phase, this novel epitaxial growth process is named solid–solid–vapor (SSV) growth. Observations reported in this thesis clearly show that transformations of HNCs upon heat treatment can differ significantly from one another. These studies can be regarded as first reference points when these HNC systems are considered to be implemented in possible future applications and for future in-situ heat treatment studies of HNCs.QN/Quantum NanoscienceApplied Science
Using Augmented Reality to Improve Collision Avoidance and Resolution
No full textBased on the Cognitive Work Analysis, described in a previous paper, an Ecological Interface is designed and built for the Augmented Reality application at Willem Barentsz. Incorporated, a.o., is the concept of Velocity Obstacles. This innovative way to visualize the problem space and solution space, provides the navigator with real time information about the possible combinations of course and speed that avoid intrusion into an other ship’s protected zone. Hence, it is anticipated that this will result in better Situation Awareness, leading to less close encounters, a.k.a. near misses, and fewer collisions.Control & Simulatio
How to build a good practice software project portfolio?
No full textWhat can we learn from historic data that is collected in three software companies that on a daily basis had to cope with highly complex project portfolios? In this paper we analyze a large dataset, containing 352 finalized software engineering projects, with the goal to discover what factors affect software project performance, and what actions can be taken to increase project performance when building a software project portfolio. The software projects were classified in four quadrants of a Cost/Duration matrix: analysis was performed on factors that were strongly related to two of those quadrants, Good Practices and Bad Practices. A ranking was performed on the factors based on statistical significance. The paper results in an inventory of 'what factors should be embraced when building a project portfolio?' (Success Factors), and 'what factors should be avoided when doing so?' (Failure Factors). The major contribution of this paper is that it analyzes characteristics of best performers and worst performers in the dataset of software projects, resulting in 7 Success Factors (a.o. steady heartbeat, a fixed, experienced team, agile (Scrum), and release-based), and 9 Failure Factors (a.o. once-only project, dependencies with other systems, technology driven, and rules- and regulations driven).Software EngineeringSoftware Technolog
Produktie van hypochloriet
No full textDocument(en) uit de collectie Chemische Procestechnologie.DelftChemTechApplied Science
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