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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.
211

Local structure and dynamics of complex fluids

Carmer, James Lee 15 January 2014 (has links)
There is a well-known connection between the structure and dynamics that is present in molecular and colloidal systems. Using this connection as a guide we are able to design interparticle potentials that optimizes the diffusivity of a single particle. While structure-dynamic correlations provide the insight that diffusion could be enhanced, the effect of this enhancement on the dynamics of neighboring particles is more difficult to quantify. A novel method for calculating position-dependent dynamics is introduced that can be easily implemented into existing simulation protocols. The computational requirements are very low compared to existing methods and this technique can also be applied to a wide variety of systems, including experiments where particle trajectories can be determined. Using this method, the position-dependent diffusivity of solvent particles in the vicinity of a tracer particle can be measured. This information allows for determination of the microscopic changes that take place as a result of the optimization discussed above. To study the effect of a non-continuum solvent, we design a system that eliminates inhomogeneous structuring near an interface. Hydrodynamic theory can predict the position-dependent diffusivity of a sphere in continuum solvent. Comparing these systems not only highlights the difference in position-dependent dynamics for continuum and non-continuum solvents, but is a starting point to study what happens to dynamics when structure is reintroduced. This allows us to answer many other questions about the relationships between structure and dynamics. While these connections have been studied extensively for average properties, they have not been explored for their position-dependent counterparts. For bulk fluids, the insertion probability and two-body excess entropy has proven useful for predicting average dynamic properties. We develop expressions for the position-dependent versions of both of these quantities. We show that when using the appropriate reference state the position-dependent diffusivity can be qualitatively related to the insertion probability. / text
212

Determination of Position Around Near-Earth Asteroids Using Communication Relays

Nelson, Evan, Creusere, Charles D., Butcher, Eric 10 1900 (has links)
ITC/USA 2014 Conference Proceedings / The Fiftieth Annual International Telemetering Conference and Technical Exhibition / October 20-23, 2014 / Town and Country Resort & Convention Center, San Diego, CA / In this paper we consider the possibility of using a communications system that is operating between probes on the surface of an asteroid and an orbiting satellite to more accurately determine spatial positions. This is done by measuring the round trip communication delay between the orbiter and various surface probes to estimate distance. From these distance measurements, the position can be determined using trilateration - the same basic technique behind the earth-based GPS system. Within the framework of this scenario, the location of the probes or the orbiter can be determined depending on the scenario.
213

Pulse Position Modulation using BICM-ID for FSO Channels

Kumar, Kuldeep 10 1900 (has links)
ITC/USA 2013 Conference Proceedings / The Forty-Ninth Annual International Telemetering Conference and Technical Exhibition / October 21-24, 2013 / Bally's Hotel & Convention Center, Las Vegas, NV / We investigate pulse position modulation (PPM) and multipulse PPM (MPPM) for free space op- tical channels using bit interleaved coded modulation with iterative decoding. Data bits are first encoded by using a non recursive convolutional code and the coded bits after an interleaver are modulated before transmission. Iterative decoding is performed at the receiver. Optimized mapping is designed for MPPM. A genetic algorithm is used to find the optimized mapping for MPPM. Our simulation results show that a significant improvement in the error performance can be achieved by using optimized mapping and iterative decoding at the receiver.
214

GT-R 2045: Perpetual Evolution / GT-R 2045: Perpetual Evolution

Hur, James January 2015 (has links)
This concept explores a new way to blend the physical and digital life driving as well as the ownership experience of a sports vehicle in 2045, when shared autonomous cars will be the norm. New market analysis, brand research, artistic exploration, design ideation, digital form development and realization were implemented. The result is Le Mans inspired GT-R featuring central driving position with 3 passenger seats in a rhombus arrangement, for a more collective racecar experience together with family and friends. The exterior signifies the long-lasting value of Nissan craftsmanship while maintaining the joy of driving a highly advanced and responsible supercar
215

Is there a requirement for 'good faith' or a 'duty of honesty' under article 102 TFEU, as regards misuse of public procedures and regulations, when establishing an abuse of dominant position?

Akbari, Haddis January 2012 (has links)
No description available.
216

Veleno tipo detalių plokštumų padėčių paklaidų formavimasis / Surface position errors formation for axel type parts

Janavičius, Egidijus 13 June 2006 (has links)
E. Janavičius „Surface position errors formation for axel type parts”. Mechanical Engineering Master‘s Theses / Leader ass.prof J.Rimkus; Siauliai University, Chair of mechanical Technology. – Siauliai, 2006 – 31p. The investigation work „Surface position errors formation for axle type parts�� consists of 28 figures, 5 references. Subject of investigation is surface position errors of the parts. Aim of the investigation is formation of surface position errors in manufacturing process. Axel type parts surface position errors formation during treatment, are presented in the work. The surface position error chains are made with a help of graphs. It is hard to estimate what will be the eventual measurement after the part is fully made, because of the errors that appear in the manufacturing process. In this work were analyzed what surface position errors appears and disappears and witch stays after manufacturing process is over. Using graphs and incidentic matrix were analyzed different surface position errors occasions.
217

13-14 metų mokinių atskirties prevencija mokykloje / School prevention for 13-14 years teenagers’ isolation

Petrauskienė, Diana 03 September 2008 (has links)
Statusas tarpusavio savybių sistemoje yra labai reikšmingas asmenybę formuojantis veiksnys. Turėdamas tam tikrą statusą, atlikdamas tam tikrą vaidmenį, paauglys mokosi vykdyti visuomenės keliamus reikalavimus.Jeigu aplinkinių sukurtas statusas yra paugliui priimtinas, tai pauglys gerai jaučiasi aplinkoje, gali pilnai save relizuoti. Izoliacijos sukeltos neigiamos emocijos dažnai skatina paauglį nederamai elgtis, o tai sudaro pagrindą formuotis neigiamoms asmenybės savybėms. Problema- mokytojai stokoja kompetencijos socialinių mokinių gebėjimų plėtotei. Tyrimo objektas- socialinė atskirtis paauglių tarpe. Klausimas: Kaip pasireiškia socialiniai ar pedagoginiai veiksniai, nulemiantys moksleivio statusą klasėje? Tikslas: Numatyti prevencines priemones, padedančias išvengti socialinės atskirties. Uždaviniai: 1.Apibendrinti veiksnius, turinčius įtakos moksleivių savijautai klasėje. 2.Įvardyti socialinius ir pedagoginius veiksnius, galinčius turėti poveikį moksleivio statusui klasėje. 3.Atpažinti moksleivių pasiskirstymą pagal statusą konkrečioje klasėje. 4.Įvardyti prevencines priemones, galinčias padėti mokiniui išvengti socialinės atskirties Išvados: Remiantis gautais tyrimo rezultatais galiu teigti, kad socialinės atskirties mokinių atsiradimą mokykloje lemia tiek objektyvios ( ekonominės, socialinės sąlygos), tiek subjektyvios (pedagoginės) sąlygos... [toliau žr. visą tekstą] / The position in a sistem of internal characteristic is a very important factor to forming individuality.A tenager with his / her position and a specific role learns how to accept the society position. If this position is accepted, the teenager is certain in surrounding and he/she is able to realise their personolity.Negative Emotions provocotive with isolation stimulate to behave inappropriate. This inappropriate behaviour forms the resons for negative personal characteristics. Problem: Teachers lock competence to develop students socinl abilities. Research object: Social disjuncture betnveen the teenagers. Qewstion: What do social or educotionl factors determine students‘ position in class. Aime:To understand preventive means, that help to avoid social isolation. Tasks: 1.To sum factors that influnce students feelings at school. 2.To name social and educational factors capable to bring influence students positions in class. 3.To recognize students grouping according to the position in class. 4.To name preventive means that help to avoid the social isolation. Conclusions: Mointain with the received research results that teenagers social isoletion origins determine objective( economical, social conditions) and subjective (education) conditions. Whereas they show that isoloted persons exist between teenagers... [to full text]
218

3-4 klasių mokinių mokymosi motyvacijos ir tėvų auklėjamosios pozicijos ryšys / 3-4 grade schoolcholdren's learning motivation coherence with parenting position

Šapranauskaitė, Indrė 08 June 2005 (has links)
This master paper deals with the problem if there is any coherence between parenting positions and schoolchildren’s learning motives and motivation. The tasks of the investigation were: 1) to ascertain the level of schoolchildren learning motivation and prevailing learning motives; 2) to compare the level of learning motivation and learning motives between girls and boys; 3) to ascertain prevailing parenting positions and 4) to ascertain connections between schoolchildren learning motives, learning motivation and parenting positions. Methods of the research: studying and analyzing sociological, psychological and pedagogical literature, forming, statistical methods. Learning motives scale (Zambacevičienė, Janulytė, 1998; Pileckaitė-Markovienė, 2001), learning motivation form (Елисеев, 2000) and parenting position form (Немов, 2000) were used as evaluation tools. 204 children (104 girls and 100 boys) from third and fourth grade and their parents were investigated by these methods. The results of the research showed, that inner learning motives (N=191), social recognition motives (N=186) and negative stimulation motives (N=164) are important for the most part of children, and they are more important for girls then boys. It was found, that girls learning motivation level (x=3.605, σ=1.046) is higher than boys (x=3.150, σ=1.166), and difference between girls and boys learning motivation level is statistical significant and substantial (t=2.933, p=0.004). It was found, that most... [to full text]
219

Status i grupphierarkin : om barns sociala interaktioner

Samuelsson, Mikael January 2013 (has links)
In this study the author attempts to identify factors that are determinants for why some pupils in Swedish grade school have high status in comparison with their peers. The study takes on the characteristics of both an ethnographic and a literature study by comparing the findings of interviews carried out with students of a first grade class with previous research. The study identify several tools for analyzing of how status may be understood in specific situations.The study also finds that important factors for gaining high status amongst children in aschool classes might be the ability to apply access strategies to get accepted in social interactions, such as game play, have the ability to create games that are enjoyed by peers and social skills, to name a few. Overall the study shows that children's game play with each otherare crucial for their social interactions and their social position. The study also show that children that have earlier established relationships with other children in a specific group alsohave a better opportunity to establish a high status position.
220

Investigating the Influence of CHD1 on Gene Expression in Drosophila Melanogaster Using Position Effect Variegation

Bui, Phuongngan Thi 01 January 2015 (has links)
Position Effect Variegation (PEV) is the mosaic expression of a gene that has been moved out of its optimal environment and into a different area on the chromosome. Changing a gene’s environment may have profound effects on its eligibility for proper expression, which is a complicated process regulated by many factors. The PEV phenomenon is used as an assay to study gene expression as regulated by chromatin structure. In this study, the Drosophila melanogaster white gene was used as a reporter to study the various effects of CHD1, a chromatin regulating factor, on PEV gene expression. Inspired by preliminary data generated by the Armstrong Lab where overexpression of CHD1 resulted in suppression of gene silencing of the brown gene and loss of CHD1 resulted in enhancement of gene silencing, this study uses PEV as an assay to examine whether loss of function chd1 mutant alleles function dominantly to enhance silencing of the white gene when it is placed in a repressive chromatin environment. Surprisingly, I found that a chd1 loss of function mutant allele dominantly suppressed gene silencing (meaning I saw an increase in gene expression), suggesting that the CHD1 protein is normally required for effective silencing. The results demonstrated that CHD1 is a dominant modifier of PEV gene expression. CHD1 significantly modifies gene expression by suppressing silencing of the white gene inserted into pericentric heterochromatin on the second and fourth chromosomes and an insertion into the medial region of the fourth chromosome, while it shows no significant modification of the white gene inserted into telomeric heterochromatin of the fourth chromosome. Together, these intriguing results regarding varying gene expression at different chromosomal sites show that PEV is a dynamic phenomenon meriting further research and studying the effects of CHD1 as a modifier of PEV may be influential to understanding the mechanism and characteristics of gene expression.

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