Global ETD Search

1	National Guard Data Relay and the LAV Sensor System Defibaugh, June, Anderson, Norman 10 1900 (has links) International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, California / The Defense Evaluation Support Activity (DESA) is an independent Office of the Secretary of Defense (OSD) activity that provides tailored evaluation support to government organizations. DESA provides quick-response support capabilities and performs activities ranging from studies to large-scale field activities that include deployment, instrumentation, site setup, event execution, analysis and report writing. The National Guard Bureau requested DESA's assistance in the development and field testing of the Light Armored Vehicle (LAV) Sensor Suite (LSS). LSS was integrated by DESA to provide a multi-sensor suite that detects and identifies ground targets on foot or in vehicles with minimal operator workload. The LSS was designed primarily for deployment in high density drug trafficking areas along the northern and southern borders using primarily commercial-off-the-shelf and government-off-the-shelf equipment. Field testing of the system prototype in summer of 1995 indicates that the LSS will provide a significant new data collection and transfer capability to the National Guard in control of illegal drug transfer across the U.S. borders. Multi-spectral imaging Image Relay Data Relay COTS NGB DESA MSTAR LORIS Drug Trafficking
2	Relationship between the natural frequencies and fatigue life of NGB–18 graphite / Renier Markgraaff Markgraaff, Renier Francois January 2010 (has links) NBG–18 graphite is developed by SGL Carbon for the Pebble Bed Modular Reactor Company (PBMR), and is used as the preferred material for the internal graphite core structures of a high–temperature gas–cooled nuclear reactor (HTR). The NBG–18 graphite is manufactured using pitch coke, and is vibrationally molded. To assess the structural behaviour of graphite many destructive techniques have been performed in the past. Though the destructive techniques are easy and in some cases relative inexpensive to perform, these methods lead to waste material and require cumbersome time consuming sample preparations. To overcome this problem numerous non–destructive testing techniques are available such as sonic resonance, resonant inspection, ultrasonic testing, low and multifrequency Eddy current analysis, acoustic emission and impulse excitation techniques. The Hammer Impulse Excitation technique was used as a method in predicting the fatigue life of NBG–18 graphite by focussing on the application of modal frequency analysis of determined natural frequencies. Moreover, the typical fatigue characteristics of NBG–18 graphite were determined across a comprehensive set of load ranges. In order to be able to correlate modal frequency parameters with fatigue life, suitable uniaxial fatigue test specimen geometry needed to be obtained. The uniaxial fatigue test specimens were manufactured from two NBG–18 graphite sample blocks. The relationship between natural frequencies of uniaxial test specimens, fatigue life, sample positioning and sample orientation was investigated for different principle stress ratios. Load ratios R = –oo and R = +2 tested proved to show the highest r–values for the Pearson correlation coefficients investigated. However, there was no significant trend found between the natural frequency and the fatigue life. / Thesis (M.Ing. (Nuclear Engineering))--North-West University, Potchefstroom Campus, 2011. NGB-18 nuclear graphite Hammer impulse excitation Fatigue Natural frequency Relationship
3	Relationship between the natural frequencies and fatigue life of NGB–18 graphite / Renier Markgraaff Markgraaff, Renier Francois January 2010 (has links) NBG–18 graphite is developed by SGL Carbon for the Pebble Bed Modular Reactor Company (PBMR), and is used as the preferred material for the internal graphite core structures of a high–temperature gas–cooled nuclear reactor (HTR). The NBG–18 graphite is manufactured using pitch coke, and is vibrationally molded. To assess the structural behaviour of graphite many destructive techniques have been performed in the past. Though the destructive techniques are easy and in some cases relative inexpensive to perform, these methods lead to waste material and require cumbersome time consuming sample preparations. To overcome this problem numerous non–destructive testing techniques are available such as sonic resonance, resonant inspection, ultrasonic testing, low and multifrequency Eddy current analysis, acoustic emission and impulse excitation techniques. The Hammer Impulse Excitation technique was used as a method in predicting the fatigue life of NBG–18 graphite by focussing on the application of modal frequency analysis of determined natural frequencies. Moreover, the typical fatigue characteristics of NBG–18 graphite were determined across a comprehensive set of load ranges. In order to be able to correlate modal frequency parameters with fatigue life, suitable uniaxial fatigue test specimen geometry needed to be obtained. The uniaxial fatigue test specimens were manufactured from two NBG–18 graphite sample blocks. The relationship between natural frequencies of uniaxial test specimens, fatigue life, sample positioning and sample orientation was investigated for different principle stress ratios. Load ratios R = –oo and R = +2 tested proved to show the highest r–values for the Pearson correlation coefficients investigated. However, there was no significant trend found between the natural frequency and the fatigue life. / Thesis (M.Ing. (Nuclear Engineering))--North-West University, Potchefstroom Campus, 2011. NGB-18 nuclear graphite Hammer impulse excitation Fatigue Natural frequency Relationship
4	Gramáticas pós-NGB: do discurso oficial a outros discursos (im)possíveis / Grammars after NGB: from the official discourse to other (im)possible discourse Thaís de Araujo da Costa 23 March 2010 (has links) A implementação da Nomenclatura Gramatical Brasileira (NGB) em 1959 e a assunção da Linguística no Brasil na década de 60 são acontecimentos que provocaram profundas mudanças no fazer gramatical. A NGB, enquanto acontecimento discursivo, ao evidenciar determinados termos e silenciar outros, reestrutura a memória do discurso gramatical brasileiro, regulando a relação do sujeito com o dizível e instaurando uma nova formação discursiva dominante, a qual se sobrepôs às formações discursivas anteriores. No presente trabalho, partimos do pressuposto de que, apesar do efeito da censura imposta pela terminologia oficial, o discurso gramatical produzido após a sua instituição é constitutivamente da ordem do heterogêneo. Assim sendo, com base no aporte teórico da Análise de Discurso de Pêcheux e Orlandi e nos estudos do projeto História das Ideias Linguísticas, investigamos o funcionamento do discurso legitimado pela NGB nas gramáticas cuja publicação a sucederam, mais especificamente em sete gramáticas publicadas entre 1959 e 1969. Interessa-nos, portanto, com vistas a depreender a forma como se materializa a tensão entre os sentidos oficiais e os sentidos censurados, desnaturalizar o processo de (re)significação dos termos acolhidos pela NGB, depreendendo, assim, como os sentidos silenciados se fizeram significar na materialidade linguística das gramáticas / The Implementation of Brazilian Grammatical Nomenclature (NGB) in 1959 and the assumption of science Linguistics in Brazil in the 60 are events that caused profound changes to the grammar. The NGB as a discursive event, highlighting certain terms and silencing others, restructured the memory of Brazilian speech grammar, regulating the relationship between subject and utterable and establishing a new dominant discursive formation, which overlapped the previous discursive formations. In this paper, we assume that, despite the effect of the censure imposed by the official terminology, the grammatical discourse produced after its establishment is constitutively of the order of the heterogeneous. Therefore, based on the Theoretical Analysis of Discourse of Pêcheux Orlandi and on studies about project História das Ideias Linguísticas (Linguistic History of Ideas), we investigated the functioning of discourse legitimized by NGB in grammars which followed publication, specifically in seven grammars published between 1959 and 1969. Then we are interested in, in order to show the embodiment of the tension between the senses and the senses official censored, deconstruct the process of (re) signification of the terms accepted by the NGB, deducing, how the silenced senses got a meaning by themselves in the linguistic materiality of the grammars Nomenclatura Gramatical Brasileira (NGB) História das Ideias Linguísticas Gramáticas do século XX Posição-sujeito gramático Discourse Analysis History of Linguistic Ideas Brazilian Grammatical Nomenclature -NGB Grammars of the twentieth century Grammatical subject position LINGUA PORTUGUESA
5	Gramáticas pós-NGB: do discurso oficial a outros discursos (im)possíveis / Grammars after NGB: from the official discourse to other (im)possible discourse Thaís de Araujo da Costa 23 March 2010 (has links) A implementação da Nomenclatura Gramatical Brasileira (NGB) em 1959 e a assunção da Linguística no Brasil na década de 60 são acontecimentos que provocaram profundas mudanças no fazer gramatical. A NGB, enquanto acontecimento discursivo, ao evidenciar determinados termos e silenciar outros, reestrutura a memória do discurso gramatical brasileiro, regulando a relação do sujeito com o dizível e instaurando uma nova formação discursiva dominante, a qual se sobrepôs às formações discursivas anteriores. No presente trabalho, partimos do pressuposto de que, apesar do efeito da censura imposta pela terminologia oficial, o discurso gramatical produzido após a sua instituição é constitutivamente da ordem do heterogêneo. Assim sendo, com base no aporte teórico da Análise de Discurso de Pêcheux e Orlandi e nos estudos do projeto História das Ideias Linguísticas, investigamos o funcionamento do discurso legitimado pela NGB nas gramáticas cuja publicação a sucederam, mais especificamente em sete gramáticas publicadas entre 1959 e 1969. Interessa-nos, portanto, com vistas a depreender a forma como se materializa a tensão entre os sentidos oficiais e os sentidos censurados, desnaturalizar o processo de (re)significação dos termos acolhidos pela NGB, depreendendo, assim, como os sentidos silenciados se fizeram significar na materialidade linguística das gramáticas / The Implementation of Brazilian Grammatical Nomenclature (NGB) in 1959 and the assumption of science Linguistics in Brazil in the 60 are events that caused profound changes to the grammar. The NGB as a discursive event, highlighting certain terms and silencing others, restructured the memory of Brazilian speech grammar, regulating the relationship between subject and utterable and establishing a new dominant discursive formation, which overlapped the previous discursive formations. In this paper, we assume that, despite the effect of the censure imposed by the official terminology, the grammatical discourse produced after its establishment is constitutively of the order of the heterogeneous. Therefore, based on the Theoretical Analysis of Discourse of Pêcheux Orlandi and on studies about project História das Ideias Linguísticas (Linguistic History of Ideas), we investigated the functioning of discourse legitimized by NGB in grammars which followed publication, specifically in seven grammars published between 1959 and 1969. Then we are interested in, in order to show the embodiment of the tension between the senses and the senses official censored, deconstruct the process of (re) signification of the terms accepted by the NGB, deducing, how the silenced senses got a meaning by themselves in the linguistic materiality of the grammars Nomenclatura Gramatical Brasileira (NGB) História das Ideias Linguísticas Gramáticas do século XX Posição-sujeito gramático Discourse Analysis History of Linguistic Ideas Brazilian Grammatical Nomenclature -NGB Grammars of the twentieth century Grammatical subject position LINGUA PORTUGUESA
6	Descrição do conectivo em cinco gramáticas da geração NGB Cunha, Luana Silva do Nascimento 20 March 2017 (has links) Submitted by Josimara Dias Brumatti (bcgdigital@ndc.uff.br) on 2017-03-20T14:27:45Z No. of bitstreams: 1 dissertação_luana_cunha.pdf: 2316534 bytes, checksum: 715c021e14eb1f211fff229b90a80ba1 (MD5) / Made available in DSpace on 2017-03-20T14:27:45Z (GMT). No. of bitstreams: 1 dissertação_luana_cunha.pdf: 2316534 bytes, checksum: 715c021e14eb1f211fff229b90a80ba1 (MD5) / Com base nas recentes teses da Historiografia da Linguística, apresentamos, neste trabalho a descrição dos conectivos em cinco gramáticas da denominada “Geração NGB”. Para o desenvolvimento da presente pesquisa, elegeram- se as seguintes obras: Gramática normativa da língua portuguesa (1960[1957]), de Carlos Henrique da Rocha Lima, Moderna gramática portuguesa (1964[1961]), de Evanildo Bechara, Pequena gramática: para explicação da nova nomenclatura gramatical (1960 [1959]), de Adriano da Gama Kury, Gramática do português contemporâneo (1971[1969]), de Celso Cunha e Gramática fundamental da língua portuguesa (1970[1968]), de Gladstone Chaves de Melo. A escolha dos autores mencionados justifica-se por tratar-se de gramáticos consagrados que deixaram um legado de pesquisa em nossa língua e lograram obter grande aceitação de suas obras no âmbito do ensino básico da língua vernácula. Tivemos a intenção de, ao examinar essas obras, averiguar o modo como esses conectivos são descritos pelos autores, com o propósito de justificar as abordagens, considerando as influências dos estudos linguísticos da época em que foram escritas. Os resultados apontam que estes gramáticos descreveram os conectivos da língua portuguesa pautados em uma uniformidade teórica, assinalando, assim, a existência de harmonia entre as gramáticas da “Geração NGB” quanto à descrição dos conectivos. / Based on the latest theses on Historiography of Linguistics, in this paper, we offer a description on connectives from five different grammar books in the so-called “NGB Generation". To develop this research, the following works have been selected: Gramática normativa da língua portuguesa (1960[1957, by Carlos Henrique da Rocha Lima, Moderna gramática portuguesa (1964[1961]), by Evanildo Bechara, Pequena gramática: para explicação da nova nomenclatura gramatical (1960 [1959]), by Adriano da Gama Kury, Gramática do português contemporâneo (1971[1969]), by Celso Cunha and Gramática fundamental da língua portuguesa (1970[1968]), by Gladstone Chaves de Melo. The above mentioned authors have been chosen on the grounds that they are renowned grammarians, who have left a research legacy for our language and whose works have received wide recognition in terms of basic language education. When examining such works, our purpose has been to identify how these connectives are described by the authors, with aims to explain their approaches, by taking into account any influences from other linguistic studies at the time they were written. Our results indicate that these grammarians described Portuguese connectives guided by a theoretical uniformity, thus evidencing the balance existing among the NGB Generation grammar books as regards the description of connectives. Historiografia da linguística Século XX NGB Gramaticografia Historiografia linguística Século XX Conectivo Historiography of linguistics XX century Connectives Grammaticography
7	Microstructural and chemical behaviour of irradiated graphite waste under repository conditions Hagos, Bereket Abrha January 2013 (has links) A procedure to evaluate the leaching properties of radionuclides from irradiated graphite waste has been developed by combining ANSI 16.1 (USA) and NEN 7345 (Netherlands) standardised diffusion leaching techniques. The ANSI 16.1 standard has been followed to the acquire the leachates and to determine the leach rate/ diffusion coefficient and NEN 7345 standard technique has been used to determine the diffusion mechanism of radionuclides. The investigation employs simulated Drigg groundwater as a leachant using semi-dynamic technique for the production of leachate specimens. From gamma spectroscopy analysis the principal radionuclides present in terms of activity were 60Co, 137Cs, 134Cs, 155Eu, 133Ba and 46Sc. The dominant radionuclides are 60Co, 134Cs and 133Ba which together account for about 91 % of the total activity. The 91 % can be broken down into 73.4 % 60Co, 9.1 % 134Cs and 8.1 % 133Ba. Analysis of total beta and total beta without tritium activity release from Magnox graphite was measured using liquid scintillating counting. Preliminary results show that there is an initial high release of activity and decreases when the leaching period increases. This may be due to the depletion of contaminants which were absorbed by the internal pore networks and the surface. During the leaching test approximately 275.33 ± 18.20 Bq of 3H and 106.26 ± 7.01 Bq of 14C was released into the leachant within 91 days. Irradiation induced damages to the nuclear graphite crystal structure have been shown to cause disruption of the bonding across the basal planes. Moreover, the closures of Mrozowski cracks have been observed in nuclear graphite, the bulk property are governed by the porosity, in particular, at the nanometre scale. Therefore, knowledge of the crystallite structure and porosity distribution is very important; as it will assist in understand the affects of irradiated damage and location and the mechanism of the leaching of radionuclides. The work reported herein contributed several key findings to the international work on graphite leaching to offer guidance leading toward obtaining leaching data in the future: (a) the effective diffusion coefficient for 14C from graphite waste has been determined. The diffusion process for 14C has two stages resulting two different values of diffusion coefficient, i.e., for the fast and slow components; (b) the controlling leaching mechanism for 3H radionuclide from graphite is shown to be surface wash–off; and for that of 14C radionuclide the initial controlling leaching mechanism is surface wash-off following by diffusion which is the major transport mechanism ; (c) The weight loss originates from the open pore structure which has been opened up by radiolytic oxidation; at the higher weight losses much of the closed porosity in the graphite has been opened. The investigation indicates that weigh loss has a major influence on the leaching of elements from the irradiated graphite; and (d) the analysis of the pores in nuclear graphite can be categorised into three types. These three types of pores are: (1) small pores narrow which are slit-shaped pores in the binder phase or matrix, (2) gas evolution pores or gas entrapment pores within the binder phase or matrix and (3) lenticular pores which are large cracks within the filler particles. It is shown in this thesis that by using tomography to study the morphology of the different pores coupled with the distribution of impurities an understanding of the role of porosity in leaching is possible. 620.1
8	Istanalyse C-Bindung Sachsen: Ermittlung der Kohlenstoffbindung von Treibhausgasspeichern und -senken in Sachsen Grünwald, Thomas 28 August 2019 (has links) Die Konzentrationen der Treibhausgase (THG) Kohlendioxid (CO2), Methan (CH4) und Lachgas (N2O) haben ein Niveau erreicht, welches mit sehr hoher Wahrscheinlichkeit seit 800.000 Jahren nicht vorgekommen ist (Stocker et al. 2013). info:eu-repo/classification/ddc/333.7 ddc:333.7
9	QoS v systému UMTS / QoS in UMTS Kavan, Radovan January 2009 (has links) This thesis treats of QoS (Quality of Service) in UMTS system. The term quality of service is frequently used, recently, however not only in computer networks, but also more and more in mobile networks also. Present system of 2nd generation (2G) GSM enables only limited exploitation of QoS function. System UMTS is a system of 3rd generation (3G) already and contains quality of service in greater measure which is ensured with number of algorithms and functions. Individual QoS functions enable effective utilization of radio interface, support maintenance of planned coverage and offer high spectral efficiency. Functions that cater to quality of service are called RRM functions (Radio Resource Management). There exist five basic functions in UMTS system that are Admission control (AC), Power control (PC), Load control (LC), Handover control (HC) and Packet scheduler (PS). These functions are responsible for control of network access, control of power, control of network load, control of handover and packet (bit rate) scheduling. Last three functions are usually collectively designated as Congestion control, control of network overload. UMTS layer model, differentiation of services, traffic classes and 3GPP concept are also discussed. In thesis the attention is piad to Admission control algorithm – control of network access – in the uplink direction and to different ways of load (in the cell) modeling. Individual approaches are simulated in MATLAB. A possibility of using algorithm in the real system is discussed in conclusion.
10	Exotic Decays of a Vector-liketop Partner at the LHC Skwarcan-Bidakowski, Alexander January 2019 (has links) An evaluation of how sensitive some ATLAS searches for new physics are to a new beyond standard model (BSM) vector-like quark (VLQ) and a pseudo Nambu-Goldstone boson (pNGB) scalar. This was done by simulating a signal containing these new particles and making a recast of it onto existing verified ATLAS searches for new physics at center-of-mass (CM) energy of 13 TeV (Run 2) at the Large Hadron Collider (LHC). Signals for recasting were tailored such that their final states would be appropriate in relation to each respective ATLAS search in order to use the same selection criteria as applied in the existing searches. The results are summarized in the form of significances (Z) for each masspoint of the new top-partner and S particle. Significances did not show any expectiation of excluding any masspoint in the examined mass range for the recasts at 95% CL. This suggests that a dedicated search for these particles in the considered masspoints would be required. Particle physics Vector-like quarks VLQ Composite Higgs model CHM Top-partner pseudo Nambu-Goldstone boson pNGB NGB ATLAS LHC CMS Significance Recast CheckMate CM MadGraph Pythia Delphes Detector Analysis Hierarchy Problem Exotic Decay QFT Quantum Field Theory fermions bosons Jets photons leptons 13 TeV Missing Transverse Energy momentum hypothetical selection criteria Standard model Signal background event Higgs Mechanism Simulation Confidence limit Other Physics Topics Annan fysik Accelerator Physics and Instrumentation Acceleratorfysik och instrumentering Subatomic Physics Subatomär fysik

Search results