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Search Results: 1 - 10 of 104 matches for " Miha Mihovilovic "
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Measurement of double polarized asymmetries in quasi-elastic processes ${}^3\vec{He}(\vec{e},e' d)$ and ${}^3\vec{He}(\vec{e},e' p)$
Miha Mihovilovic
Physics , 2012,
Abstract: This thesis is dedicated to a study of a spin-isospin structure of the polarized ${}^3\mathrm{He}$. First, an introduction to the spin structure of ${}^3\mathrm{He}$ is given, followed by a brief overview of past experiments. The main focus of the thesis is the E05-102 experiment at Jefferson Lab, in which the reactions ${}^3\vec{\mathrm{He}}(\vec{\mathrm{e}},\mathrm{e'} \mathrm{d})$ and ${}^3\vec{\mathrm{He}}(\vec{\mathrm{e}},\mathrm{e'} \mathrm{p})$ in the quasi-elastic region were studied. The purpose of this experiment was to better understand the effects of the S'- and D-state contributions to the ${}^3\mathrm{He}$ ground-state wave-functions by a precise measurement of beam-target asymmetries $A_x$ and $A_z$ in the range of recoil momenta from 0 to about $300 \mathrm{MeV}/c$. The experimental equipment utilized in these measurements is described, with special attention devoted to the calibration of the hadron spectrometer, BigBite. Results on the measured asymmetries are presented, together with first attempts at their comparison to the state-of-the art Faddeev calculations. The remaining open problems and challenges for future work are also discussed.
The “absurdity” of travelling themes
Miha Javornik
Slavica TerGestina , 2012,
Abstract: While presupposing that every culture evolves based on its own specific terms, this discussion poses the question of how one of Russia's main cultural and literary characteristics emerges within these two realms. Following research on historical poetics on permanent theme and motif-related (subject) schemes, which form the basis of oral or written artistic expression and pass from one country to another, the question that poses itself is how these consequent “travelling themes” pass from one (according to A. Flaker) style formation into another, from one phase of literary and cultural devel-opment into another. The analysis addresses the emergence of a specific motif scheme in the creative process of N.V.Gogol that has led to the absurd consciousness, which in turn became, regardless of art form transformations, a kind of a constructive principle of Soviet and Russian culture of the 20th century.
Limits of growth: a few steps towards the methodology of book publishing research
Miha Kova?
Knji?nica : Revija za Podro?je Bibliotekarstva in Informacijske Znanosti , 2002,
Abstract: The author analyses the research on the Competiveness of European Publishing Industries,commissioned by the European Commission in 1996. As already presented in the article, published in Knji nica in 2000, in this research insufficient methodology and criteria were used, and as the result, the Slovenian publishing industry performed as one of the most competitive in Europe, regardless of the fact that already in the second half of the nineties, the first signs of a crisis in the Slovene book industry were already visible. The author proposes new criteria for measuring competitiveness of book industries, the difference between the production & sales costs and the average retail price of a book title. The article shows that the average production and sales costs in Slovene publishing are higher than in the rest of Europe. As a consequence,Slovene publishers earn less than their colleagues in other parts of Europe. The article analyses the historic, demographic, economic and social reasons for such a state of affairs. In conclusion, the author states that the reasons for low book sales and low publishers’ incomes should not be looked for in bad reading habits, but in too expensive books, and partially also in inattractive book contents.
Discovering the roots of information society: book as material object and communication device
Miha Kova?
Knji?nica : Revija za Podro?je Bibliotekarstva in Informacijske Znanosti , 2001,
Abstract: The article examines the book as a communication device. It analyses the impact of the invention of print on the European civilization in the 15th and 16th century. Drastically larger amount of available data and new ways of data retrieval were the main differences between cultures of print and medieval manuscript culture. In other words, post-Gutenberg European scholars and clerics dealt with much larger amounts of available information than their predecessors. Even more, preservation of data with memorizing and copying manuscripts was substituted by comparison of data. As a result, patterns of intellectual life were drastically changed. As such, consequences of the invention of print could be considered as an information revolution, which was one of the main preconditions of European enlightenment and reformation movements. With analysing the beginnings of book publishing, one thus analyses the roots of contemporary information societies. From this point of view, book and publishing history becomes an integral part not only of education of book professionals, but also of humanities and social studies.
Slovene and European book publishing: stagnation in the shadow of excelence
Miha Kova?
Knji?nica : Revija za Podro?je Bibliotekarstva in Informacijske Znanosti , 2001,
Abstract: The paper analyzes results of the research on the competitiveness of the European Union book publishing industries, which was conducted by the Turku School of Economics in Finland, and commisioned by the European Commission. The paper compares economic performance of Slovene book-publishing industry with book-publishing industries of EU member states. It shows that in the mid-nineties, the competitiveness of the Slovene book industry was above EU average, but, after 1995, it started to decline. The reasons for such a decline could be found in expensive selling channels, in the inability to benefit from high investments in information technologies, in the inability of Slovene publishers to develop a proper mass market for books (which was substituted by library loans) and lack of proper managerial skills and publishing education.
Paradoxes of cyberspace: why an e-book exists predominantly on paper
Miha Kova?
Knji?nica : Revija za Podro?je Bibliotekarstva in Informacijske Znanosti , 2007,
Abstract: The paper analyzes the failure of predictions from mid-nineties that an e-book will become more popular than a printed book. The author stresses that the reasons for this failure are predominantly economical and sociological and have much less to do with technological failures of e-book reading devices that it is popularly believed. Thebackbone of the book publishing process is the inseparable link between the contentand its carrier; on this basis, the publishers has become the gatekeepers of intellectualproduction and the authorship has become a profession. In e-publishing, the linkbetween the content and its carrier disintegrated; as a consequence, e-book publishingnever established itself in a form of successful business process. Additionally,throughout the last 500 years, the printed book established itself as the most appropriatemedia for dissemination and storage of the most sophisticated product of humanmind. The paper shows that the e-book lacks the necessary features to substituteprinted book in this role. However, regardless its dominance over e-book, the productionand marketing of printed books have become almost entirely digitized. As a consequence,instead of e-book readers, paper has become the most important carrier ofe-book content
Paradoxes of reading and knowledge in Slovenia
Miha Kova?
Knji?nica : Revija za Podro?je Bibliotekarstva in Informacijske Znanosti , 2009,
Abstract: The paper introduces the concept of book usage and puts Slovenian book usage into the context of the European Union. It stresses the limits of European book statistics,due to them the measurements of book usage in various European societies is almost impossible. In this context, we will show that due to available data, Slovenia paradoxically belongs to the countries with high book usage and average reading habits. In the second part of the paper, we will look at the correlations between reading habits and efficiency of education systems. On this basis, we will ask some new questions and develop a set of hypotheses that need to be verified by the further research.
Who are the Explainers? A case study at the House of Experiments
Miha Kos
JCOM : Journal of Science Communication , 2005,
Abstract: Hi a Eksperimentov (The House of Experiments) is a very small science centre. We are situated in the centre of Ljubljana, the capital of Slovenia. The gross area of the centre is only 500 square meters and we meet around 25,000 visitors per year. We were opened for the public in the year 2000. In the Hi a Eksperimentov there are four full-time employees and around 10 persons working and paid by fees. There are specific institutions present in Slovenia so called Student services. They help students in finding paid job on daily basis. The state still encourages students to work by lowering the taxes for their job. There are around 25 students working as explainers in Hi a. Here are some facts about Slovenia. The population is around 2 million in the area of 20,256 square kilometers. There are 18 students per 1000 inhabitants. One can play a game with numbers – taking into account the area of Hi a and the population and area of Slovenia one can calculate that there is one person expected in an area of the size of 20 science centers. And there are even much fewer students present in the same area. But the number of visitors and students working in the center proves the density is larger. Therefore science centers do concentrate the population!
Cryogenic small-signal conversion with relaxation oscillations in Josephson junctions
Miha Furlan
Physics , 2005, DOI: 10.1063/1.2218984
Abstract: Broadband detection of small electronic signals from cryogenic devices, with the option of simple implementation for multiplexing, is often a highly desired, although non-trivial task. We investigate and demonstrate a small-signal analog-to-frequency conversion system based on relaxation oscillations in a single Josephson junction. Operation and stability conditions are derived, with special emphasis on noise analysis, showing the dominant noise sources to originate from fluctuation processes in the junction. At optimum conditions the circuit is found to deliver excellent noise performance over a broad dynamic range. Our simple models apply within the regime of classical Josephson junction and circuit dynamics, which we confirm by experimental results. A discussion on possible applications includes a measurement of the response to a cryogenic radiation detector.
Generation of vector beams with liquid crystal disclination lines
Miha ?an?ula,Miha Ravnik,Slobodan ?umer
Physics , 2014, DOI: 10.1103/PhysRevE.90.022503
Abstract: We report that guiding light beams, ranging from continuous beams to femtosecond pulses, along liquid crystal defect lines can transform them into vector beams with various polarization profiles. Using Finite Difference Time Domain numerical solving of Maxwell equations, we confirm that the defect in the orientational order of the liquid crystal induces a defect in the light field with twice the winding number of the liquid crystal defect, coupling the topological invariants of both fields. For example, it is possible to transform uniformly-polarized light into light with a radial polarization profile. Our approach also correctly yields a zero-intensity region near the defect core, which is always present in areas of discontinuous light polarization or phase. Using circularly polarized incident light, we show that defects with non-integer winding numbers can be obtained, where topological constants are preserved by phase vortices, demonstrating coupling between the light's spin, orbital angular momentum and polarization profile. Further, we find an ultrafast femtosecond laser pulse travelling along a defect line splits into multiple intensity regions, again depending on the defect's winding number, allowing applications in beam steering and filtering. Finally, our approach describing generation of complex optical fields via coupling with topological defect lines in optically birefringent nematic fluids can be easily extended to high-intensity beams that affect nematic ordering.
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