2,736 research outputs found
Simple drag prediction strategies for an Autonomous Underwater Vehicle’s hull shape
No full textThe range of an AUV is dictated by its finite energy source and minimising the energy consumption is required to maximise its endurance. One option to extend the endurance is by obtaining the optimum hydrodynamic hull shape with balancing the trade-off between computational cost and fluid dynamic fidelity. An AUV hull form has been optimised to obtain low resistance hull. Hydrodynamic optimisation of hull form has been carried out by employing five parametric geometry models with a streamlined constraint. Three Genetic Algorithm optimisation procedures are applied by three simple drag predictions which are based on the potential flow method. The results highlight the effectiveness of considering the proposed hull shape optimisation procedure for the early stage of AUV hull desig
Impact Multiplier Policy Models for the Agricultural Sector: An Application to India
No full textThis article has been presented at the Workshop on Methods for Agricultural Policy Analysis held at the UP Los Baños on August 13-14, 1985. It discusses a simple type of general equilibrium policy models and illustrates its application in the Indian agriculture. Results indicate the importance of population growth to the demand of goods and supply of labor.agriculture sector, econometric modeling
Impact Multiplier Policy Models for the Agricultural Sector: An Application to India
No full textThis article has been presented at the Workshop on Methods for Agricultural Policy Analysis held at the UP Los Baños on August 13-14, 1985. It discusses a simple type of general equilibrium policy models and illustrates its application in the Indian agriculture. Results indicate the importance of population growth to the demand of goods and supply of labor.agriculture sector, econometric modeling
THE CORRELATION OF THE MEDIEVAL EUROPEAN STATE AND LAW IN THE DOCTRINE OF P.A. KROPOTKIN
No full textThe actual task of Russian state studies and jurisprudence remains the opposition to the ideological and theoretical constructions of Russian classical anarchism. Purpose: to establish the most significant features and disadvantages of P.A. Kropotkin’s interpretation of the correlation of state and law on the example of Medieval Europe. When writing the article, the author applies interdisciplinary and class approaches. General scientific and specific scientific methods are used: historical, problem-theoretical, formal-logical, textual. Materials: monuments of law, other historical sources, foreign and national historiography. The analysis shows that P.A. Kropotkin’s works are characterised not only by a pronounced anti-exploitation pathos, but also by an equally pronounced tendentiousness. Results: aprioriism, anti-statism and antilegism, radical localism, Eurocentrism, diffusionism, cyclism and catastrophism, clothed in the form of postulates, predetermined P.A. Kropotkin’s one-sided interpretations of the interaction of the medieval European state with positive and customary law. In the first case, it took a purely causative form, and in the second, it was predominantly conflictual. These are the key flaws of P.A. Kropotkin’s correlation concept
Does Intellectual Property Protection Spur Technological Change
No full textOf the diverse factors motivating technological change, one factor that has received increasing attention in the recent past has been the protection of intellectual property rights. Given fairly recent changes in the international policy ethos where a regime of stronger intellectual property protection has become a fait accompli for most developing countries, it is of some significance to ask whether more stringent protection of intellectual property does indeed encourage innovation. And this is the question which this paper examines, utilising cross-country panel data on R&D investment, patent protection and other country-specific characteristics spanning the period 1981-1990. The evidence unambiguously indicates the significance of intellectual property rights as incentives for spurring innovation.Intellectual Property Rights, Technological Change, Economic Growth
Flow-induced gate vibrations: Prevention of sef-excitation computation of dynamic gate behaviour and the use of models
No full textThe objective of this study is to develop design criteria for the dynamic behaviour of gates and valves. To this end, a resume of existing theories is given as well as an extended analysis of the added water mass, hydrodynamic rigidity and damping (also negative damping or self-excitation) and excitation by turbulent flow. New computation methods are presented for self-exciting vibrations: The ensuing introduction of an instability indicator permits the prediction of such vibrations in the design phase. Methods are described to calculate the added water mass and water damping in flowing water. Also treated are the instability of overflowing and falling water nappes, the response of a mass-spring system to noise excitation by turbulence, and the technique of hydroelastic models. Prior publications by the author on these subjects are to be found in the Appendices.Hydraulic EngineeringCivil Engineering and Geoscience
Quality and qualities of design studies, design research and design
No full textGreen Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Methodologie en Organisatie van Desig
Views of P.A. Krushevan on the National Problem in Russia: Moldavian or Russian Nationalist
No full textThe article deals with the national identity of P.A. Krushevan. Being of Moldavian nationality, he was a Russian conservative writer and journalist. At the beginning of the 19th century he served as a Russian nationalist in the political arena. The author shows that he was a supporter of Moldavian national traditions and a personality of the Moldavian national movement. At the same time Krushevan was an «imperial nationalist» and a Russian statesman. In behalf of Bessarabia peasants, he exposed the economic activity of «plutocracy», but he was a stranger to domestic anti-Semitism
The Nigerian Co-operative Law: Taking the Baton from P.A. Oluyede
No full textSome of the challenges hindering the development of co-operatives and their governing laws in Nigeria are the inadequacy of literature, and the lack of standardized classification on the subject of co-operative law. With the aim to identify and espouse relevant literature on the subject matter, this paper seeks to collect, collate and review the relevant literature. A classic was identified in the work of P.A. Oluyede (1988) Nigeria Administrative Law, in chapter four, entitled “Public Corporations, and Public Enterprises.” Among other findings, the learned author dedicated the chapter to the historical development of Nigerian co-operative societies and their governing laws, situated cooperatives as public enterprises, and made recommendations. Furthermore, it was observed that there have been few contributions within the annals of the Nigerian academic and research community on co-operative law. Thus, Oluyede’s classics retains its position as a primary reference material for the modernization of the Nigerian cooperative law and sets the path for its standardization. However, supposedly consequential development has remained elusive, hence the imperatives to build on some of the positions espoused in Oluyede’s chapter in view of current realities. Although P.A Oluyede’s contribution retains its position as a top-notch reference material, some of the positions canvassed are no longer applicable to Nigerian co-operatives, hence the need to review Nigerian cooperative law as recommended. 
EVALUATING AGRICULTURAL RESEARCH AND PRODUCTIVITY IN AN ERA OF RESOURCE SCARCITY
No full textProceedings of a Symposium Sponsored by NC-208, "Impact Analysis and Decision Strategies for Agricultural Research" held at Orlando, Florida, March 4, 1993. Contents: The Federal Context for Funding Agricultural Research, by Daryl Chubin Agricultural Research Structures in a Changing World, by Brian Wright and David Zilberman Priority Setting in a State Agricultural Experiment Station: Shifting Paradigms, by Bill R. Baumgardt Structure, Management and Funding of Agricultural Research in the United States: Current Directions and Likely Impact, by Wallace Huffman and Richard Just Impact of Changing Intellectual Property Rights on U.S. Plant Breeding R&D, by Carl E. Pray, Mary Knudson and Leonard Masse A New Look at State-Level Productivity Growth in U.S. Agriculture, by Philip G. Pardey, Barbara J. Craig and Klaus Deininger Measuring Agricultural Productivity in U.S. Agriculture, by V. Eldon BallProductivity Analysis, Research and Development/Tech Change/Emerging Technologies,
- …
