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The Global ETD Search service is a free service for researchers
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Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 31 to 40 of 45 (0.009 seconds)| 31 |
Knowledge Transfer from multinational corporations’ headquarters to their subsidiaries : The methods of transferring knowledge (Explicit & Tacit)Hossain, Monir, Islam, Ariful January 2023 (has links)
Background: Globalization, technological advancement and opportunity of capturing new markets have pushed business organizations to expand their business in the inter- national market. As a result, companies have established their subsidiaries in the host country and control their business from headquarters. Moreover, headquarters provide all the support such as training, strategies and knowledge to their subsidiary to perform better and help to build competitive advantage. The importance of knowledge transfer has increased in recent decades because knowledge is considered as an asset. Aim: The aim of the study is to analysis the method of knowledge transfer (explicit and tacit) from multinational companies headquarter to their subsidiaries. Methodology: In this paper, qualitative research approach has been followed with con- tent analysis technique. Primary data has been collected through interviews and Conve- nience sampling technique were used. Findings: Findings of the study shows that MNCs are using agency theory and knowl- edge base theory to transfer knowledge to their subsidiary. Most of the cases it has been observed that headquarters appeared as a knowledge creator whereas subsidiaries only utilize that knowledge. Moreover, manufacturing based companies transfer more explicit knowledge and service based companies transfer more tacit knowledge. Almost every MNCs use training, seminars, creating social groups and written instructions to transfer explicit and tacit knowledge to their subsidiaries. Study also found that there are some internal (hoarding behavior, non-invented here syndrome) and external factors (culture, language, location) which affect the knowledge transfer process of MNCs. Contribution of the study: This study will help managers around the world to under- stand the core concept of knowledge transfer, knowledge transfer method and factors affecting knowledge transfer. On the other hand, it will also help to design flawless channels to transfer knowledge. Scope of further studies: More interviews can be added including managers from the subsidiaries to get a more broader perspective. Also the studies can be done with com- paring different industries since knowledge is different depending on the industry. For example, the service Industry has more tacit knowledge than in the manufacturing indus- try.
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Factorisations des processus exclusifs en chromodynamique quantique perturbativeSegond, Mathieu 07 December 2007 (has links) (PDF)
Le travail effectué dans cette thèse présente diverses études théoriques et phénoménologiques du processus de production exclusive de mésons vecteurs rho neutres polarisés longitudinalement dans les collisions entre photons virtuels, dans le cadre de la chromodynamique quantique (QCD). La virtualité des photons permet de situer notre approche dans le secteur perturbatif de la théorie. Les régimes cinématiques envisagés mènent à l'utilisation d'outils théoriques variés qui font apparaître différentes propriétés de factorisation de l'amplitude de diffusion: deux types de factorisation colinéaire (à courte distance) pour ce processus sont discutés au chapitre 1, faisant apparaître –suivant la polarisation des photons virtuels et le régime cinématique considéré- des Amplitudes de Distribution Généralisées (GDA) ou des Amplitudes de Distribution de Transition (TDA), outils communément utilisés dans la description des processus exclusifs. Nous introduisons dans le Chapitre 2 de manière autocohérente les bases du formalisme BFKL valide dans la limite à haute énergie (limite de Regge) de QCD, en vue de son utilisation phénoménologique détaillée dans le Chapitre 3: l'amplitude de diffusion du processus est décrite dans ce formalisme en exploitant la factorisation dans l'espace bidimensionnel des impulsions transverses, ou kT-factorisation. Nous prédisons la valeur de la section efficace du processus à l'ordre de Born de la resommation BFKL et nous discutons de son observation possible auprès du futur collisionneur linéaire international (ILC). Nous obtenons également les sections efficaces différentielles du processus sans transfert d'impulsion avec resommation BFKL complète à l'ordre des logarithmes dominants (Leading-Order) ainsi qu'à l'ordre suivant (Next-to-Leading-Order) afin d'établir un test fin du processus d'échange d'un Poméron dur décrit par le formalisme BFKL, observable au futur collisionneur linéaire ILC.
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Effects of Hemoglobin Normalization with Epoetin in Chronic Kidney DiseaseFuruland, Hans January 2005 (has links)
<p>Anemia is common in patients with chronic kidney disease (CDK), contributes to reduced Quality of Life (QoL) and is associated with cardiovascular disease, morbidity and mortality. Epoetin raises hemoglobin (Hb) and increases QoL and physical exercise capacity. Because of concerns about safety and economics, current anemia treatment with epoetin aims to achieve subnormal Hb (110-120 g/l). Normalization of Hb may be of additional benefit regarding QoL and cardiovascular effects. The present study examines the effects of Hb normalization with epoetin on safety variables, QoL, graft function after kidney transplantation, dialysis adequacy, hemorheology, hemodynamics and cardiac autonomic function in CKD patients. </p><p>In a randomized, multicenter study comprising 416 pre-dialysis and dialysis patients no difference was observed between patients treated to a normal or a subnormal Hb level on mortality, thrombovascular events, serious adverse events, vascular access thrombosis and residual renal function. QoL was enhanced in a subgroup of hemodialysis patients. Pretransplant epoetin treatment directed toward normal Hb levels did not result in worse graft function during 6 postoperative months. Dialysis adequacy was reduced in a subgroup of hemodialysis patients after normalization of Hb. The blood flow properties of pre-dialysis patients were altered. The hemorheological investigation demonstrated that Hb normalization caused a parallel increase in hematocrit and blood viscosity without other hemorheological changes. While the total peripheral resistance index increased, the cardiac index (CI) decreased. In a separate study cardiac autonomic function, measured by heart rate variability, was decreased in pre-dialysis patients. It was improved, but not fully normalized, by Hb normalization. </p><p>On the basis of this study, Hb normalization with epoetin appears to be safe and increases QoL in hemodialysis patients though may result in lower dialysis adequacy and increased blood pressure. A reduction in CI and improved cardiac autonomic function indicate a positive effect on cardiovascular function.</p>
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Effects of Hemoglobin Normalization with Epoetin in Chronic Kidney DiseaseFuruland, Hans January 2005 (has links)
Anemia is common in patients with chronic kidney disease (CDK), contributes to reduced Quality of Life (QoL) and is associated with cardiovascular disease, morbidity and mortality. Epoetin raises hemoglobin (Hb) and increases QoL and physical exercise capacity. Because of concerns about safety and economics, current anemia treatment with epoetin aims to achieve subnormal Hb (110-120 g/l). Normalization of Hb may be of additional benefit regarding QoL and cardiovascular effects. The present study examines the effects of Hb normalization with epoetin on safety variables, QoL, graft function after kidney transplantation, dialysis adequacy, hemorheology, hemodynamics and cardiac autonomic function in CKD patients. In a randomized, multicenter study comprising 416 pre-dialysis and dialysis patients no difference was observed between patients treated to a normal or a subnormal Hb level on mortality, thrombovascular events, serious adverse events, vascular access thrombosis and residual renal function. QoL was enhanced in a subgroup of hemodialysis patients. Pretransplant epoetin treatment directed toward normal Hb levels did not result in worse graft function during 6 postoperative months. Dialysis adequacy was reduced in a subgroup of hemodialysis patients after normalization of Hb. The blood flow properties of pre-dialysis patients were altered. The hemorheological investigation demonstrated that Hb normalization caused a parallel increase in hematocrit and blood viscosity without other hemorheological changes. While the total peripheral resistance index increased, the cardiac index (CI) decreased. In a separate study cardiac autonomic function, measured by heart rate variability, was decreased in pre-dialysis patients. It was improved, but not fully normalized, by Hb normalization. On the basis of this study, Hb normalization with epoetin appears to be safe and increases QoL in hemodialysis patients though may result in lower dialysis adequacy and increased blood pressure. A reduction in CI and improved cardiac autonomic function indicate a positive effect on cardiovascular function.
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Modal satisifiability in a constraint logic environmentStevenson, Lynette 30 November 2007 (has links)
The modal satisfiability problem has to date been solved using either a specifically
designed algorithm, or by translating the modal logic formula into a different class
of problem, such as a first-order logic, a propositional satisfiability problem or a constraint
satisfaction problem. These approaches and the solvers developed to support
them are surveyed and a synthesis thereof is presented.
The translation of a modal K formula into a constraint satisfaction problem,
as developed by Brand et al. [18], is further enhanced. The modal formula, which
must be in conjunctive normal form, is translated into layered propositional formulae.
Each of these layers is translated into a constraint satisfaction problem and solved
using the constraint solver ECLiPSe. I extend this translation to deal with reflexive
and transitive accessibility relations, thereby providing for the modal logics KT and
S4. Two of the difficulties that arise when these accessibility relations are added
are that the resultant formula increases considerably in complexity, and that it is
no longer in conjunctive normal form (CNF). I eliminate the need for the conversion
of the formula to CNF and deal instead with formulae that are in negation normal
form (NNF). I apply a number of enhancements to the formula at each modal layer
before it is translated into a constraint satisfaction problem. These include extensive
simplification, the assignment of a single value to propositional variables that occur
only positively or only negatively, and caching the status of the formula at each node
of the search tree. All of these significantly prune the search space. The final results
I achieve compare favorably with those obtained by other solvers. / Computing / M.Sc. (Computer Science)
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Die erste Stadt an der äußersten Grenze. / Die historische Entwicklung der Stadt Tengchong im Prozeß der Entstehung und Konsolidierung des Grenzgebietes im Westen der chinesischen Provinz Yunnan. / The first town at the far frontier. / The historical development of Tengchong and the consolidation of the chinese border region in Western Yunnan.Kott, Diana 10 July 2003 (has links)
No description available.
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Using a Catenary Equation in Parametric Representation for Minimizing Stress Concentrations at Notches / Minimierung der Spannungskonzentration an Kerben mittels einer Kettenlinie in parametrischer DarstellungJakel, Roland 26 June 2015 (has links) (PDF)
Der Vortrag beschreibt, wie sich mittels Kettenlinien als Kerbgeometrie der Spannungskonzentrationsfaktor an Querschnittsübergängen auf nahezu 1 reduzieren lässt. Mittels globaler Sensitivitätsstudien in der p-FEM-Software Creo Simulate wird mithilfe eines in Creo Parametric parametrisierten CAD-Modells der Kettenlinie in Parameterdarstellung ein normiertes Kerbzahldiagramm erstellt. Dieses erlaubt die Dimensionierung einer Kerbe, d.h. die Festlegung ihrer exakten Geometrie und der damit verbundenen Kerbzahl αk ohne die weitere Verwendung eines FEM-Programmes. / The presentation describes how to reduce the stress concentration factor at cross section transitions to nearly 1 by using a catenary curve as notch geometry (catenary fillet). With help of global sensitivity studies performed in the p-FEM-code Creo Simulate, a normalized stress concentration factor diagram is drawn. Therefore, a CAD-model of the catenary curve in parametric representation was developed. The diagram created allows to dimension the notch, that means to determine its exact geometry and stress concentration factor Kt, without further usage of a FEM code.
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40Ar/39Ar Dating of the Late CretaceousGaylor, Jonathan 11 July 2013 (has links) (PDF)
As part of the wider European GTS Next project, I propose new constraints on the ages of the Late Cretaceous, derived from a multitude of geochronological techniques, and successful stratigraphic interpretations from Canada and Japan. In the Western Canada Sedimentary Basin, we propose a new constraint on the age of the K/Pg boundary in the Red Deer River section (Alberta, Canada). We were able to cyclostratigraphically tune sediments in a non-marine, fluvial environment utilising high-resolution proxy records suggesting a 11-12 precession related cyclicity. Assuming the 40Ar/39Ar method is inter-calibrated with the cyclostratigraphy, the apparent age for C29r suggests that the K/Pg boundary falls between eccentricity maxima and minima, yielding an age of the C29r between 65.89 ± 0.08 and 66.30 ± 0.08 Ma. Assuming that the bundle containing the coal horizon represents a precession cycle, the K/Pg boundary is within the analytical uncertainty of the youngest zircon population achieving a revised age for the K/Pg boundary as 65.75 ± 0.06 Ma. The Campanian - Maastrichtian boundary is preserved in the sedimentary succession of the Horseshoe Canyon Formation and has been placed ~8 m below Coal nr. 10. Cyclostratigraphic studies show that the formation of these depositional sequences (alternations) of all scales are influenced directly by sea-level changes due to precession but more dominated by eccentricity cycles proved in the cyclostratigraphic framework and is mainly controlled by sand horizons, which have been related by autocyclicity in a dynamic sedimentary setting. Our work shows that the Campanian - Maastrichtian boundary in the Western Canada Sedimentary Basin coincides with ~2.5 eccentricity cycles above the youngest zircon age population at the bottom of the section and ~4.9 Myr before the Cretaceous - Palaeogene boundary (K/Pg), and thus corresponds to an absolute age of 70.65 ± 0.09 Ma producing an ~1.4 Myr younger age than recent published ages. Finally, using advances with terrestrial carbon isotope and planktonic foraminifera records within central Hokkaido, Northwest Pacific, sections from the Cretaceous Yezo group were correlated to that of European and North American counterparts. Datable ash layers throughout the Kotanbetsu and Shumarinai section were analysed using both 40Ar/39Ar and U-Pb methods. We successfully dated two ash tuff layers falling either side of the Turonian - Coniacian boundary, yielding an age range for the boundary between 89.31 ± 0.11 Ma and 89.57 ± 0.11 Ma or a boundary age of 89.44 ± 0.24 Ma. Combining these U-Pb ages with recent published ages we are able to reduce the age limit once more and propose an age for the Turonian - Coniacian boundary as 89.62 ± 0.04 Ma.
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Modal satisifiability in a constraint logic environmentStevenson, Lynette 30 November 2007 (has links)
The modal satisfiability problem has to date been solved using either a specifically
designed algorithm, or by translating the modal logic formula into a different class
of problem, such as a first-order logic, a propositional satisfiability problem or a constraint
satisfaction problem. These approaches and the solvers developed to support
them are surveyed and a synthesis thereof is presented.
The translation of a modal K formula into a constraint satisfaction problem,
as developed by Brand et al. [18], is further enhanced. The modal formula, which
must be in conjunctive normal form, is translated into layered propositional formulae.
Each of these layers is translated into a constraint satisfaction problem and solved
using the constraint solver ECLiPSe. I extend this translation to deal with reflexive
and transitive accessibility relations, thereby providing for the modal logics KT and
S4. Two of the difficulties that arise when these accessibility relations are added
are that the resultant formula increases considerably in complexity, and that it is
no longer in conjunctive normal form (CNF). I eliminate the need for the conversion
of the formula to CNF and deal instead with formulae that are in negation normal
form (NNF). I apply a number of enhancements to the formula at each modal layer
before it is translated into a constraint satisfaction problem. These include extensive
simplification, the assignment of a single value to propositional variables that occur
only positively or only negatively, and caching the status of the formula at each node
of the search tree. All of these significantly prune the search space. The final results
I achieve compare favorably with those obtained by other solvers. / Computing / M.Sc. (Computer Science)
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Quantum Transport Through Carbon Nanotubes Functionalized With Antiferromagnetic MoleculesSchnee, Michael 12 August 2019 (has links)
The subject of this thesis is to study the interaction between carbon nanotubes (CNTs) and antiferromagnetic tetrametallic molecules attached to them. By employing quantum transport measurements, the sensitivity to sense the interactions is greatly increased, because the quantum dot is very susceptible to changes in its environment. The properties of carbon nanotubes can be altered by chemical functionalization with the aforementioned molecules, where the attachment is performed covalently via a ligand exchange with the CNT. The thesis is partitioned into two main parts: the first part presents experiments performed on tetramanganese functionalized CNTs, whereas for the second similar studies are conducted, except manganese is replaced by cobalt. Both complexes exhibit an antiferromagnetic ground state, yet the metal spin of manganese (S=5/2) is reduced to S=3/2 for cobalt. Additionally, an altered device preparation has been employed during the second part, leading to a strong suppression of the background signal. Quantum transport measurements at T=4K on manganese-functionalized CNTs show a very regular pattern of Coulomb diamonds, indicating only a mild disturbance of the quantum dot's electron system by the covalent bond. Moreover, the charging energy reveals a wave function extending over the entire device dimensions. However, at T=30mK in the tunneling current a strong noise emerges, when repeatedly measuring over an hour while keeping external biases constant. Additionally, these time traces are superimposed by a long-term background, which is removed by a correction algorithm plus a subsequent digitization. The remaining signal reveals a random telegraph signal (RTS) which is extensively studied and from its statistics the equivalent temperature of T=654mK for the excitation of the system is extracted. The quantum transport experiments conducted on cobalt-functionalized CNTs show a much better data quality of the coulomb diamonds, which is ascribed to the alteration in the device's preparation. From the line shape of the Coulomb oscillations as well as from the Coulomb staircases an electron temperature of about T=500mK is extracted. Moreover, a magnetic field dependence of the stability diagrams is apparent, attributable to Zeeman splitting. The respective Landé factor of g=1.73 is, compared to similar CNT quantum dot systems, unusually low. It is as attributed to an increased spin-orbit interaction between the conduction electrons and the cobalt's nuclei. The respective time traces exhibit or lack an RTS signal, depending on their external biases. Regarding the Coulomb diamonds, an essential prerequisite for the occurrence of an RTS is the proximity to a resonance, which is equatable to a high sensitivity of the quantum dot detector. Considering the available energy, the underlying process that is the cause for the emergence of the RTS is ascertained to be an internal excitation of the antiferromagnetic states of the metallic core.
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