928 research outputs found
KN and KN two-body physics: 2-5 GeV/c
No full textThe author reviews KN and KN induced reactions in the intermediate energy region to sketch present theoretical understanding and to high- light promising avenues for the future. He emphasizes several experiments that should advance or consolidate understanding: polarization for K/sup 0/p to K/sup +/n, K/sup -/p to K/sup 0/n, K/sub L//sup 0/p to K/sub s//sup 0/p; R parameter data for K/sup +/p to K /sup +/p and KN to Lambda pi and Sigma /sup +/ pi . A determination of precise cross section differences between K/sup +or-/p and K/sup +or- /n elastic scattering; between K and K charge exchange and between KN to pi Y and pi N to KY is described. (20 refs)
Triangular embeddings of Kn−Km with unboundedly large m
No full textAbstractThe author has proposed methods of constructing index 2 and 3 current graphs generating triangular embeddings of graphs Kn−Km with unboundedly large m (asn increases). As a result, triangular embeddings of graphs of many families of graphs Kn−Km with unboundedly large m were constructed. The paper gives a survey of these results and a short explanation of the methods
Author Correction: Considering serum alanine aminotransferase and gamma-glutamyltransferase levels together strengthen the prediction of impaired fasting glucose risk: a cross-sectional and longitudinal study
No full textEinige extremale Aufgaben für die Klassen Kn(E) und P(E)
No full textThe abstracts (in two languages) can be found in the pdf file of the article.
Original author name(s) and title in Russian and Lithuanian:
Г. Кирьяцкий. Некоторые экстремальные задачи в классах Kn(E) и Р(Е)
E. G. Kirjackis. Kai kurie ekstremaliniai uždaviniai Kn(E) ir P(E) klasės
The role of the international patent system in the transfer of technology to West Africa : case studies : Ghana and Nigeria
No full textThe principal aim of this thesis is to undertake a critical
examination of the role of the international patent system in the
transfer of technology to West Africa, particularly Ghana and Nigeria.
It focuses mainly on the patent systans and technology regulatory
regimes of the two countries. The study is intended to identify and
evaluate the impact of the international patent system on the transfer
and development of technology in this area.
The first chapter provides a theoretical foundation to some of
the more practical issues to be discussed in the subsequent chapters.
The Paris Convention and the diplomatic revision exercise thereof, as
well as other efforts and policies regarding patents and technology
transfer at various levels are discussed in Chapter Two. Chapters
Three to Eight consider the two case-studies undertaken in this
thesis. Chapter Three begins with the historical development of the
patent system in both Ghana and Nigeria, and the remaining chapters
continue with a discussion of the present patent and technology
regulatory regimes of both countries. Based on facts and figures the
two case-studies examine critically the patent law and systems and
technology transfer laws of these two countries including other
related institutional measures highlighting their strengths and
weaknesses.
The study argues that if the patent systems of both countries
are to play a meaningful role in the transfer and developnent of
technology they nust be utilized as a tool of economic policy and also
be related to the technology transfer regimes which nust necessarily
be integrated into the national technology policy which should, in
turn, be made an integral part of the entire national developnent
plan. It is concluded that it is only in this way that the patent
system can effectively contribute to the transfer of technology and
the development of indigenous technological capabilities in the two countries
Ausdehnung einiger Sätze von Aksentjeff und Tshakaloff auf die Klassen Kn(D)
No full textThe abstracts (in two languages) can be found in the pdf file of the article.
Original author name(s) and title in Russian and Lithuanian:
Э. Г. Кирьяцкий. Распространение некоторых теорем Аксентьева и Чакалова на класс Kn(D)
E. G. Kirjackis. Kai kurios Aksentjevo ir Čakalovo teoremos Kn(D) klasėj
Superradiation of Dirac particles in KN black hole
No full textIn this article, we process the approximate wave function of the Dirac
particle outside the horizon of the KN ds black hole to effective potential V,
and then derive V (including real and imaginary parts). We know that fermions
cannot produce superradiation, but we can prove that Dirac particles in the KN
black hole background can have a special solution through a certain operation,
forming a Cooper pair, thus producing superradiation.We deal with the real and
imaginary parts separately. When V (real part or imaginary part) has a maximum
value, there may be a potential barrier outside the field of view to have a
chance to produce superradiation.Comment: 12 pages. arXiv admin note: text overlap with arXiv:2103.04239; text
overlap with arXiv:1501.06570 by other author
Correction to: System characterization of a human-sized 3D real-time magnetic particle imaging scanner for cerebral applications (Communications Engineering, (2024), 3, 1, (47), 10.1038/s44172-024-00192-6)
No full textCorrection to: Communications Engineeringhttps://doi.org/10.1038/s44172-024-00192-6, published online 14 March 2024 Author correction: In the original version of this Article, financial support from the Open Access Publication Fund of UKE - Universitätsklinikum Hamburg-Eppendorf was not acknowledged. This has now been corrected in both the PDF and HTML versions of the Article. The Acknowledgements section needs to be revised to: We thank Florian Sevecke for technical support during the realization of numerous scanner components. We further thankfully acknowledge the financial support by the German Research Foundation (DFG, grant numbers KN 1108/7-1 and GR 5287/2-1). We also thank the developers of Makie.jl supporting us by answering technical questions when creating Figs. 3 and 4. Finally, we are grateful to Christian Findeklee for their discussions and insights into resonant circuit decoupling. We acknowledge financial support from the Open Access Publication Fund of UKE - Universitätsklinikum Hamburg-Eppendorf.3
The regulation of labour and the state in the Sudan : a study of the relationship between the stage of social and economic development and the autonomy of labour relations law
No full textThe thesis is a study of labour regulation and the State in the
Sudan in the light of a general theoretical conception of labour law and
the State. The first Chapter defines the concepts of analysis that are
used throughout the study, isolates the "essential" properties of the
Capitalist State and Law from the historically concrete forms which they
assume in a particular society and distinguishes between processes which
influence development of the form of law and others which influence its
sociological development. Drawing on the analysis in Chapter I, Chapter
II exposes the inter-relationship between the Sudanese social formation,
State and Law and the implication of this inter-relationship for both the
form and substance of labour relations law. Chapters III, IV and V are
specific verifications of the hypothesis regarding the inter-relationship
between the State and labour relations law in the Sudan and that
regarding the development of the "substance" and "ideology" of law in
general.
The thesis considers law as an empirically-founded discipline.
But, it distinguishes between various types of empirical facts about law
corresponding with respective semi-autonomous social levels at which law
asserts its existence. The research method followed describes the
empirical facts about law at the particular level and, in order to
determine the epistemological significance of these facts, analytically
relates them to empirical facts at other levels. Wherever used in the
thesis the term "theory" signifies either this methodological procedure of
analysing the inter-connection of empirical facts at a certain level and
their inter-relation with other facts at other levels, or the substantive
generalizations about law which findings at these various levels would
allow.
I consider my application of this methodology to the study of
labour rela tions law, the historical dimension this application introduces
in socio-economic analysis of this law, the criticism of certain Marxist
and other sociological conceptions of law it enables, and the
socio-histor ical relativity of the "substance" and "ideology" of law it
reveals as original contributions to the knowledge of labour law. The
compilation and evaluation within the framework of the thesis of
empirical materials on industrial relations in the Sudan are likewise
original contribution to the knowledge of Sudanese "labour law" and
labour law in general
Development and Performance of the 10 kN Hybrid Rocket Motor for the Stratos II Sounding Rocket
No full textThis paper presents the development work of the 10 kN hybrid rocket motor DHX-200 Aurora. The DHX-200 Aurora was developed by Delft Aerospace Rocket Engineering (DARE) to power the Stratos II and Stratos II+ sounding rocket, with the later one being launched in October 2015. Stratos II and Stratos II+ are the flagship projects of DARE, a student group working on rocketry at Delft University of Technology. Successors of Stratos II have the eventual goal of reaching space. During the development process two major revisions of the motor have been designed with smaller changes between tests. The second major design revision was made after a first test series showed low combustion efficiency, through the usage of a CFD model to improve mixing. Both revisions have been tested statically in total for 14 times both at facilities of ’Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek’ (TNO) and ’Deutsches Zentrum f ¨ ur Luft- und Raumfahrt’ (DLR). All tests were conducted in a full-scale, flight-ready configuration with the primary goal of demonstrating the required performance for the Stratos II and Stratos II+ sounding rocket. It was found out that the motor suffered from combustion instabilities at around 450 Hz, when operated at its design oxidizer mass flux level of 600 kg=m2=s, that caused low combustion efficiency and elevated heat flux levels in the pre-combustion chamber. Through design changes the instabilities could be lowered and both problems removed. The design goal of total impulse could not be met, but the specific impulse measured was higher than expected. Still, the overall performance proofed to be sufficient enough for the system to be used as the propulsion system for Stratos II+
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