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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    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.
91

A search for gauge mediated supersymmetry breaking using signal e'+e'-#->#..

Kelly, Mandy Sharon January 1998 (has links)
No description available.
92

A search for the Standard Model Higgs boson using the OPAL detector at LEP

Sang, W. M. January 1999 (has links)
No description available.
93

Spontaneous CP violation in the next-to-minimal supersymmetric standard model

Usai, Alessandro January 2000 (has links)
No description available.
94

Kukurūzų grūdų trupinimo tyrimas / Corn grain crushing studies

Milašius, Andrius 16 June 2014 (has links)
Tirtas kukurūzų frakcijų kiekio pasiskirstymo priklausomybė nuo atstumų dydžio tarp trupintuvo valcų. Tyrimai atlikti 2013-2014 metais Aleksandro Stulginskio universitete. Tyrimo objektas – diskinių valcų trupintuvas-traiškytuvas, kurio našumas iki 15 t.h-1. Valcai – apvalūs, dantyti, sukimosi dažnis ns = 4000 min-1. Trupintuvą-traiškytuvą sudaro keturi valcai, dvi poros – pakopos. Trupintuvo diskiniams valcams sukti, reikalinga aktyvioji galia, matuota elektros energijos tinklo analizavimo prietaisu ME-MI2492 („Metrel“). Frakcijų atskyrimui buvo naudojami penki sietai: 3,5 mm; 3 mm; 2,4 mm; 2 mm; 1 mm. Iš viso gautos šešios frakcijos. Valcų atstumas kito nuo 4,5 iki 6 mm pirmos pakopos ir nuo 1,5 iki 3 mm antrosios pakopos. Tyrimais nustatytas žymus, frakcijų didesnių nei 3,5 mm, kiekio didėjimas. Grūdų drėgniui sumažėjus pastebėtas galios poreikio padidėjimas esant minimaliems atstumams tarp valcų. Apdorojus duomenis nustatytas esminis skirtumas tarp frakcijų didesnių nei 3,5 mm kiekio procentinės dalies, esant santykiniam grūdų drėgniui ωg1=37,77±0,5% ir frakcijų kiekio kai drėgnis ωg3=33,25±0,88%. / Studied corn fraction pattern on the cracker rolls gap wide. Investigations were carried out in 2013-2014 at Aleksandras Stulginskis University. Research object was a disc roller crusher, with a capacity of up to 15 t.h-1. Rollers - rounded, toothed, rotation speed n = 4000 min -1. Crusher consists of four rolls, two pairs in all. Crusher disc rolls turn required active power, measured electricity network analysis device ME- MI2492 ( Metrel ) sievs was used in five screens: 3.5 mm; 3 mm; 2.4 mm; 2 mm; 1 mm. A total of six groups. The results demonstrated significant groups larger than 3.5 mm, the increase in volume. Grain moisture decreased observed a increase in power consumption at the minimum roller distance. After processing the data a fundamental difference been set between the groups of larger than 3,5 mm the percentage of grain moisture ωg1 = 37.77 ± 0.5% and the volume fraction when humidity ωg3 = 33.25 ± 0.88 %.
95

Hostile Attribution Biases And Externalizing Behaviors: The Influence Of Parenting Practices

Ronkin, Emily 10 May 2017 (has links)
Children’s social information processing (SIP) encompasses cognitive and behavioral sequence that underlies social responses. SIP in peer interactions is well studied. Less is known about SIP in mother-child interchanges. Youth who show one SIP pattern a hostile attribution of intent (HAI) bias—in peer interactions consistently exhibit externalizing symptoms. This relationship is less consistently observed for HAI biases toward mothers. I hypothesized that this inconsistent association reflects moderating factors; specifically, engaging in foundational parenting practices (monitoring/supervision, consistent discipline) would weaken the relationship between HAI biases toward mothers and externalizing behaviors. Logistic regression yielded limited support for hypotheses. Consistent discipline predicted externalizing behaviors in some contexts; however, moderator effects were not detected. Isolated parenting practices thus may not buffer against the risk of externalizing behaviors linked to HAI biases toward mothers. Future research might examine how different HAI biases (peer, mother, etc.) related to each other and outcome variables.
96

De stungna runorna : Användning och ljudvärde i runsvenska steninskrifter / Die punktierten Runen : Gebrauch und Lautwerte in runenschwedischen Steininschriften

Lagman, Svante January 1990 (has links)
De vikingatida runinskrifternas kronologi
97

Fermion Mass Generation without Spontaneous Symmetry Breaking

Ayyar, Venkitesh January 2016 (has links)
<p>The conventional mechanism of fermion mass generation in the Standard Model involves Spontaneous Symmetry Breaking (SSB). In this thesis, we study an alternate mechanism for the generation of fermion masses that does not require SSB, in the context of lattice field theories. Being inherently strongly coupled, this mechanism requires a non-perturbative approach like the lattice approach.</p><p>In order to explore this mechanism, we study a simple lattice model with a four-fermion interaction that has massless fermions at weak couplings and massive fermions at strong couplings, but without any spontaneous symmetry breaking. Prior work on this type of mass generation mechanism in 4D, was done long ago using either mean-field theory or Monte-Carlo calculations on small lattices. In this thesis, we have developed a new computational approach that enables us to perform large scale quantum Monte-Carlo calculations to study the phase structure of this theory. In 4D, our results confirm prior results, but differ in some quantitative details of the phase diagram. In contrast, in 3D, we discover a new second order critical point using calculations on lattices up to size $ 60^3$. Such large scale calculations are unprecedented. The presence of the critical point implies the existence of an alternate mechanism of fermion mass generation without any SSB, that could be of interest in continuum quantum field theory.</p> / Dissertation
98

Investigation of the bend transition in Pi-cell devices

Lee, Chang-Hun January 2011 (has links)
The Pi-cell is known to have the fastest response time amongst commercialised nematic LCD applications due to the bend configuration. The Bend configuration can be obtained when a high voltage is applied to a Pi-cell initially treated to have a splay configuration, but transition is complex because the splay and the bend states are topologically not identical. Although two possible mechanisms (anchoring breaking and order reconstruction) can explain the bend transition, it is still difficult to be certain of the mechanism in some cases. In this thesis, therefore, the bend transition mechanism in the Pi-cell is investigated. Whichever mechanism is present, the bend transition speed is expected to increase when a high voltage is applied to the cell. However, in some cases, the application of a higher voltage reduces the bend transition speed. These phenomena are discussed based on various experimental results, and the reasons are also discussed. Four different regimes are suggested depending on the bend transition speed change. From these results, it is possible to understand the best way to obtain the bend state quickly in a TFT-LCD in the Pi-cell mode. During the experiments, unexpected light leakage was observed in the extinction position. It was proved that the light leakage came from the residual twist angle caused by the manufacturing process. In addition, two new methods were suggested for measuring the residual twist angle from the light leakage. One of the methods, the analytic method, was extended to the TN-cell. Allowing for the residual twist angle in the Pi-cell, the reason for lower CR compared to other LCD modes is discussed, and methods are suggested in this thesis to improve the CR of Pi-cell devices.
99

The Evaluation of Task Preference on Reinforcer Efficacy

Lowery, Wesley J. 12 1900 (has links)
Stimulus preference assessments have determined high and low preferred items that increase the rate of frequency of responding for various skills. Within applied settings, high preferred items may not attain the same reinforcing value across tasks which might decrease responding. The preference of the task might have an effect on reinforcer efficacy that is being presented. The purpose of the current study is to evaluate changes in reinforcer efficacy as a function of preference for the task. Three children diagnosed with ASD participated in the study. HP/LP items and HP/LP tasks were identified through paired-choice assessments, and each item was presented as a consequence for each task in a counterbalanced multi-element format. Results indicated that preference for the task had little effect of the rate of responding across items.
100

The international expansion of emerging-economy firms : The influence of path-breaking change and its antecedents / L'expansion internationale des entreprises des pays émergents : L'influence des changements de trajectoire et leurs antécédents

Kalasin, Kiattichai 22 September 2011 (has links)
Cette thèse présente les mécanismes qui expliquent l'expansion internationale des entreprises multinationales des pays émergents vers des pays développés. Nous suggérons que les changements radicaux en termes de routines contribuent à expliquer l'expansion des entreprises des pays émergents. Nous soutenons que ce type de changement radical est uneétape indispensable pour que les entreprises des pays émergents puissent construire un avantage compétitif et entrer dans les économies avancées.De plus, nous nous intéressons aux antécédents du changement radical des routines de l’entreprise. En nous appuyant sur la théorie de l’échelon supérieur, nous suggérons que la composition des équipes de direction a un impact sur les changements radicaux de routines. Nous soutenons le fait que les dirigeants étrangers et ceux disposant d’une expérienceinternationale peuvent apporter de nouvelles connaissances et pratiques de gestion dans leurs organisations, ce qui contribue à les rendre plus compétitives. Toutefois, le succès sur le marché domestique peut empêcher l'entreprise d’évoluer à l’international. Les entreprises ont tendance à construire leurs capacités dans le prolongement de leur trajectoire passée ; une diversification conglomérale, des liens avec le gouvernement et une position de leader de marché peuvent empêcher les entreprises d'entrer dans les économies développées. / This dissertation introduces mechanisms that explain the international expansion of emerging-market multinational enterprises (EM MNEs) into advanced economies. It aims to provide a theoretical explanation of global champions from emerging economies. We propose path-breaking change as a complementary view that is the driver of emerging-economy firms’ international expansion into advanced economies. We argue that path-breaking change is a prerequisite before emerging-economy firms build and, in turn, leverage their ownership advantages in advanced economies. In addition, we further investigate the antecedents of path-breaking change. Building upon the upper-echelon theory, we assert that the composition of a top management team (TMT) and a board of directors (BOD) have an impact on the extent of a firm's path-breaking change. We argue that foreigners and executives with international exposure may bring new knowledge and introduce new management practices to their organizations. They may usesuch knowledge and skills to transform firms into more market-oriented entities. However, success in the domestic market may prevent a firm from changing. Firms tend to build their capabilities upon their historical path trajectory. Hence, market leadership position, conglomerate diversification, and government ties deter firms from venturing into advanced economies

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