31. The boundaries of the firm : critiques, strategies and policiesNeil M. Kay, pregledno delo Ključne besede: enterprise, economic theories, economists, cognition, keynesianism, acquisitions, mergers, strategic alliances, boundary, business policy, corporations, strategic management, hypothesis, sinergy, economic structures, economic structures, joint venture, integration, business cooperation, management, business efficiency, success of business operation Objavljeno: 01.06.2012; Ogledov: 1163; Prenosov: 19 Povezava na celotno besedilo |
32. Knowledge capitalism : business, work, and learning in the new economyAlan Burton-Jones, 1999, priročnik Ključne besede: knowledge, management, capitalism, theory, support, empirical research, data, data sources, working organization, industrialization, human capital, intelligent systems, business, business operation of the enterprise, socio-economic development, contemporary society, work, learning, new economy, enterprise, property, control, restructuring, individualism, employment, supply, models, career success, career, entrepreneur, dependences, independence, business cooperation, networks, boundary, transition economics Objavljeno: 01.06.2012; Ogledov: 1521; Prenosov: 25 Povezava na celotno besedilo |
33. Advances in mergers and acquisitions2000, zbornik Ključne besede: enterprise, acquisitions, mergers, strategic alliances, boundary, company takeovers, corporations, strategic management, control, performance, company performance, economic structures, integration, human capital, human resource management, culture, culture of the enterprise, management, business efficiency, success of business operation, industrial psychology Objavljeno: 01.06.2012; Ogledov: 1373; Prenosov: 54 Povezava na celotno besedilo |
34. Economics of strategyDavid Besanko, David Dranove, Mark T. Shanley, učbenik za višje in visoke šole Ključne besede: strategic planning, economics of the enterprise, strategy, development strategy, enterprise, boundary, holding companies, mergers, complexity, decision, decision making, transactions, costs, market, swap, industrial organization, evolution, partnership, companies, corporations, competition, pozitioning, advantage, sustainable development, international business, organizing, chains, internal entrepreneurship Objavljeno: 01.06.2012; Ogledov: 1556; Prenosov: 28 Povezava na celotno besedilo |
35. Statistical Properties of Time-dependent SystemsDiego Fregolente Mendes De Oliveira, 2012, doktorska disertacija Opis: In the dissertation I have dealt with time-dependent (nonautonomous) systems,
the conservative (Hamiltonian) as well as dissipative, and investigated their dynamical
and statistical properties. In conservative (Hamiltonian) time-dependent systems the
energy is not conserved, whilst the Liouville theorem about the conservation of the phase
space volume still applies. We are interested to know, whether the system can gain
energy, and whether this energy can grow unbounded, up to infinity, and we are
interested in the system's behaviour in the mean, as well as its statistical
properties. An example of such a system goes back to the 1940s, when Fermi proposed
the acceleration of cosmic rays (in the first place protons) upon the collisions
with moving magnetic domains in the interstellar medium of our Galaxy,
and in other galaxies. He then proposed a simple mechanical one-dimensional model,
the so-called Fermi-Ulam Model (FUM), where a point particle is moving between two
rigid walls, one being at rest and the other one oscillating. If the oscillation
is periodic and smooth, it turned out in a nontrivial way, which is, in the
modern era of understanding the chaotic dynamical systems, well understood,
namely that the unbounded increasing of the energy (the so-called Fermi
acceleration) is not possible, due to the barriers in form of invariant tori,
which partition the phase space into regions, between which the transitions are
not possible. The research has then been extended to other simple dyanamical
systems, which have complex dynamics. The first was so-called bouncer model,
in which a point particle bounces off the oscillating platform in a gravitational
field. In this simple system the Fermi acceleration is possible. Later
the research was directed towards two-dimensional billiard systems. It turned
out that the Fermi acceleration is possible in all such systems, which are at least
partially chaotic (of the mixed type), or even in a system that is integrable
as static, namely in case of the elliptic billiard. (The circle billiard
is an exception, because it is always integrable, as the angular momentum
is conserved even in time-dependent case.) The study of time-dependent systems
has developed strongly worldwide around the 1990s, in particular in 2000s,
and became one of the central topics in nonlinear dynamics. It turned out,
quite generally, but formal and implicit, in the sense of mathematical
existence theorems, that in nonautonomous Hamilton systems the energy can
grow unbounded, meaning that the system ``pumps" the energy from the environment
with which it interacts. There are many open questions: how does the energy
increase with time, in particular in the mean of some representative ensemble
of initial conditions (typically the phase space of two-dimensional time-dependent
billiards is four-dimensional.) It turned out that almost everywhere the power laws
apply, empirically, based on the numerical calculations, but with various
acceleration exponents. If the Fermi acceleration is not posssible, like e.g.
in the FUM, due to the invariant tori, then after a certain time of acceleration
stage the crossover into the regime of saturation takes place, whose
characteristics also follow the power laws. One of the central themes in
the dissertation is the study of these power laws, their critical exponents,
analytical relationships among them, using the scaling analysis
(Leonel, McClintock and Silva, Phys. Rev. Lett. 2004). Furthermore, the central
theme is the question, what happens, if, in a nonautonomous Hamilton system
which exhibits Fermi acceleration, we introduce dissipation, either
at the collisions with the walls (collisional dissipation) or
during the free motion (in-flight dissipation, due to the viscosity
of the fluid or the drag force etc.). Dissipation typically transforms
the periodic points into point attractors and chaotic components into
chaotic attractors. The Fermi acceleration is always suppressed.
We are interested in the phase portraits of Ključne besede: nonlinear dynamics, dynamical systems, conservative and dissipative
systems, time-dependent systems, Fermi acceleration, billiards, kicked systems, chaos, chaotic and periodic attractors, bifurcations, boundary crisis Objavljeno: 19.09.2012; Ogledov: 1894; Prenosov: 72 Celotno besedilo (16,09 MB) |
36. Times New Roman CE; Vpeljava interakcij posredovanih preko molekul topila v Poisson-Boltzmannovo teorijoKlemen Bohinc, 2012, doktorska disertacija Opis: Electrostatic interactions are omnipresent in colloidal and biological systems; for example they take place in aqueous solutions that contain mobile salt ions. Water plays a crucial role for the energetics of such systems. The ordering of water molecules changes the polarization and thus contributes to the electrostatic properties of the system. In particular, structural correlations between solvent molecules give rise to an inhomogeneous and non-local dielectric response that contributes to the energetics and the stability of biomacromolecules.
This work is concerned with including solvent structures into mean-field electrostatics. It consists of three related subjects.
In the first part we introduce a solvent model of interacting Langevin dipoles and incorporate that model into the Poisson-Boltzmann (PB) theory for an aqueous solution of monovalent ions in contact with a charged surface. The interplay between the electric double layer and the orientational ordering of solvent molecules determines the spatial decay of the solvent polarization. We showed that our model can result in a sign inversion of the electrostatic potential at a charged surface.
The second part applies the PB model for a solvent of interacting Langevin dipoles to a mixed anionic/zwitterionic lipid layer. In the model the headgroups have ability to polarize the water in the headgroup region. The result is a positive electrostatic potential everywhere in the system.
In the last part we introduce the Poisson-Helmholtz-Boltzmann theory, which adds to the electrostatic interaction potential between two ions an additional Yukawa potential. The latter accounts for solute-mediated ion-ion interactions. We demonstrate that these interactions can give rise to ion specific effects. One of the possible applications of the theory is related to the Hofmeister series. The presented analysis focuses on two systems. The first is the system of two charged surfaces embedded in a solution of only counterions, whereas the second system is one single charged surface in contact with a symmetric 1:1 electrolyte solution. Ključne besede: Biomacromolecules, Solvent structure, Langevin dipoles, Electrostatics, Poisson and Helmholtz equations, Boundary-value problems, Yukawa potential Objavljeno: 19.09.2012; Ogledov: 1577; Prenosov: 66 Celotno besedilo (1,71 MB) |
37. APPLYING THE GRAIN-BOUNDARY DIFFUSION PROCESS USING ELECTROPHORETIC DEPOSITION TO SELECTED REGIONS OF A Nd-Fe-B MAGNETBlaž Goričar, 2014, magistrsko delo Opis: This Master's thesis research is about the localized coercivity enhancement of Nd-Fe-B magnets, which are used in electric motors. Computer simulations show, that when magnets operate at high temperatures, they experience large demagnetizing fields. However, this happens only on specific parts of the body of the magnet. The demagnetization can be prevented by locally enhancing the coercivity only on these specific parts. The goal of this Master’s thesis was to research the localized coercivity enhancement by creating a magnet, where one half would have different magnetic properties compared to the other half.
Commercially available Nd-Fe-B magnets were bought from Shin-Etsu, Japan. The magnetic properties of the magnets were measured on two very different devices – the permeameter and the vibrating sample magnetometer. The demagnetization curves were compared. The coercivity of the magnet was improved with the electrophoretic deposition of dysprosium on the surface. The dysprosium then diffused, at high temperature, from the surface to the inside of the magnet along the grain boundaries. The microstructure of the magnet was analysed on the scanning electron microscope, while the content of the elements was quantitatively analysed with the EDS method.
The demagnetization curves of both devices were comparable. The grain-boundary diffusion process of dysprosium with the electrophoretic deposition increased the coercivity of the magnet by 25 %, without any significant loss in remanence. The research on the localized grain-boundary diffusion was first done with measurements on the vibrating sample magnetometer and then confirmed with the Hall probe. We discovered that one part of the magnet could have different magnetic properties compared to the other half. There was a clear border between the two. Ključne besede: Nd-Fe-B magnet, coercivity, magnetic properties, electrophoretic deposition, grain-boundary diffusion process. Objavljeno: 09.09.2014; Ogledov: 1244; Prenosov: 65 Celotno besedilo (4,38 MB) |
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39. Favin, Angelo; Ruiz Goldstein, Gisèle; Goldstein, Jerome A.; Obrecht, Enrico; Romanelli, Silvia: General Wenzel boundary conditions and analytic semigroups on W[sup]{1,p}(0,1). - Appl. Anal. 82, no. 9, 927-935. [ISSN 0003-6811; ISSN 1563-504X]Miklavž Mastinšek, 2004, recenzija, prikaz knjige, kritika Ključne besede: matematika, analiza, analitične polgrupe, splošni Wentzelovi robni pogoji, mathematics, analysis, analytic semigroups, general Wentzel boundary conditions Objavljeno: 10.07.2015; Ogledov: 334; Prenosov: 8 Povezava na celotno besedilo |
40. Geodetic sets in graphsBoštjan Brešar, Matjaž Kovše, Aleksandra Tepeh, 2011, samostojni znanstveni sestavek ali poglavje v monografski publikaciji Opis: Na kratko so povzeti rezultati o geodetskih množicah v grafih. Po pregledu rezultatov iz prejšnjih raziskav se posvetimo geodetskemu številu in sorodnim invariantam v grafih. Podrobno so obravnavane geodetske množice kartezičnih produktov grafov in geodetske množice v medianskih grafih. Predstavljen je tudi algoritmični vidik in povezava z nekaterimi ostalimi koncepti iz teorije konveksnih in intervalskih struktur v grafih. Ključne besede: matematika, teorija grafov, geodetsko število, geodetska množica, kartezični produkt, medianski graf, mejna množica, mathematics, graph theory, geodetic number, geodetic set, Cartesian product, median graph, boundary set Objavljeno: 10.07.2015; Ogledov: 185; Prenosov: 13 Povezava na celotno besedilo |