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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.
51

The Self-administered Interview (SAI) - A sum of its parts? : A comparison between different componentes of SAI from temporal aspects and as facilitators for later retrieval

Söderlund, Patrik January 2023 (has links)
When conducting initial forensic interviews, facilitating later retrieval in an efficient and timely manner is often important. A tool called The Self-Administered Interview (SAI) has been shown to facilitate later retrieval when completed initially. Even if less time-consuming than other interviewing protocols, it still takes considerable time to complete. This study compared the capability to facilitate later retrieval and temporal aspects of SAI and its separate parts to investigate the relative worth of each part. The two separate parts were a written, free recall and the rest of SAI without the free recall. Forty-five participants completed either of the parts after watching a fictious crime. Six days later a memory test was administered. This study used the same research design as two previous studies which allowed for integrated analysis using data from the three studies. SAI facilitated later retrieval by significantly increasing number of correct answers and decreasing number of incorrect answers. SAI without a free recall significantly decreased number of incorrect answers. SAI took approximately twice as long to complete as a written, free recall. SAI without free recall had comparable results as a free recall but took almost the same time to complete as SAI. An overall pattern for all initial actions was that an increase in complexity and comprehensive design, increased performance but also took longer to complete. If performance is priority and time is not a factor, SAI is recommended. If lowering time of completion is priority a free recall is the quickest action.
52

A Contextual Approach to Multi-dimensional Analyses of Sai Bhajan: A Vocal Genre from South India

Boonsermsuwong, Praphai 23 April 2014 (has links)
No description available.
53

LRU-SAI: the use of LRU algorithm with separation of active and inactive pages to improve solid state storage device performance

Yu, Jingyi 06 December 2010 (has links)
No description available.
54

Analyse des caractères d’intérêt morphogénétiques et biochimiques pour le développement des sorghos sucrés à double usage « grain-bioalcool » / Analysis of useful morphogenetic and biochemical traits for the development of dual-purpose “grain-bioethanol” sweet sorghums

Gutjahr, Sylvain 05 July 2012 (has links)
Dans l'optique de produire des agro‐carburants, le sorgho sucré est aujourd'hui proposé comme une alternative à d'autres espèces cultivées à grande échelle comme la canne à sucre et le maïs car il présente plusieurs avantages : le sorgho est résistant à la sécheresse et à la chaleur, il nécessite peu d'intrants, a en moyenne un cycle de culture relativement court (3‐4 mois) comparé à la canne à sucre. Il offre une grande diversité génétique à explorer et exploiter, tout en étant génétiquement moins complexe que la canne à sucre. Finalement, il peut être cultivé pour un double usage, le grain pouvant être utilisé comme source d'alimentation pour l'homme ou le bétail (à partir du grain) et le jus sucré contenu par les tiges comme source d'agrocarburant. Cette polyvalence en fait une culture idéale pour lutter contre la compétition entre cultures énergétiques et cultures vivrières et assurer des rendements dans des environnements de culture sujets au stress hydrique et thermique comme c'est le cas en Afrique de l'Ouest. Cependant, le caractère sucré du sorgho est complexe, car sous l'influence d'interactions Génotype X Environnement (GxE). Aussi, les mécanismes métaboliques, morphologiques ou phénologiques constituant la cinétique d'accumulation des glucides dans la tige et son éventuelle compétition avec le remplissage des grains restent mal connus ou très controversés dans la littérature. La présente thèse, réalisée dans le cadre du projet européen Sweetfuel, vise à comprendre ces mécanismes, afin de contribuer à la définition d'idéotypes de sorgho double usage, pour les environnements soudano‐sahéliens.Sur la base d'études expérimentales au champ au Mali et en serre en France, il a pu être démontré que les glucides sont accumulés dans les entrenoeuds des tiges par un jeu d'activités enzymatiques (favorisant l'accumulation d'hexoses puis de saccharose) dès le début de leur élongation, donc potentiellement avant la floraison. Au Mali, l'étude au champ de 14 génotypes adaptés aux conditions locales, plus ou moins sensibles à la photopériode et semés à trois dates différentes, a démontré le bénéfice d'un rallongement de la phase végétative sur la quantité de sucre accumulée dans les tiges de la plante à floraison, du fait d'un plus grand nombre d'entrenoeuds allongés et du temps à leur disposition pour accumuler des glucides avant ce stade. Ce bénéfice était cependant plus lié à la plus grande quantité de biomasse accumulée (taille des tiges) qu'à la concentration en sucre dans les entrenoeuds (plutôt stable entre dates de semis).Ainsi, la durée de la phase végétative et la sensibilité à la photopériode sont proposés comme des paramètres clés favorisant la quantité de glucides accumulée dans les tiges de la plante à floraison. D'autre part, il a été montré que la quantité de glucides présente à maturité dans les tiges des mêmes génotypes ne différait pas ou peu de celle à floraison, une éventuelle réduction pour quelques génotypes n'étant généralement pas significative et évitable par l'allongement du cycle. De plus, cette quantité de glucides dans les tiges à maturité n'a tiré aucun bénéfice de l'ablation de la panicule à floraison chez les mêmes génotypes. Ces résultats suggèrent que la compétition entre le remplissage du grain et la production de sucre est faible chez le sorgho, d'autant plus faible que la plante présente de grandes tiges et donc un grand compartiment de stockage des glucides, tamponnant cette éventuelle compétition. D'ailleurs, à une échelle plus fine, aucune différence n'a pu être mise en évidence en termes d'activité des principales enzymes du métabolisme carboné dans la tige d'un génotype dans sa version stérile (pas de remplissage du grain) et fertile.Ce travail a démontré le potentiel du sorgho pour une double utilisation dans un contexte soudano‐sahélien et la pertinence d'exploiter la diversité génétique de cette espèce pour cette objectif de sélection. Les résultats ob / Sweet sorghum offers many advantages as an alternative to widely cultivated crops such as corn and sugarcane to produce biofuels: it is resistant to water stress, it requires few inputs; it has a shorter growth cycle compared to sugarcane in particular. Sorghum also exhibits a great genetic diversity and is genetically less complex than sugarcane. Finally, sorghum can be cultivated for dual‐purpose uses, using grains for food or feed and sweet juice for biofuel production. Hence, sorghum is a promising option to reduce the competition for land and (water) resource use between food and fuel, in particular in cropping environments with high drought and heat stress frequency, as in West Africa. However, stem sweetness is a complex trait prone to genotype x environment interactions (GxE). The metabolic, morphological and phenological mechanisms involved in the kinetic of stem sugar accumulation and its possible competition with grain filling are largely unknown or controversial in the literature. The present work is part of the European project Sweetfuel and aims at better understanding these mechanisms and contributing to define dual‐purpose sorghum ideotypes for soudano‐sahelian conditions.Based on field and greenhouse experiments respectively in Mali and France, it was found that sugars start accumulating in stem internodes at the onset of their elongation, i.e. potentially soon before the plant flowers. The successive accumulation of hexose and then sucrose in internodes could be dynamically explained by changes in the activity of key enzymes related to sucrose metabolism. In Mali, a field experiment performed on 14 genotypes, contrasted for photoperiod sensitivity and sown at three planting dates, highlighted the interest of increasing vegetative phase duration to increase sugar yield. This was explained first of all by the higher number of internodes that could expand during a longer vegetative phase, and thus, by the higher production of stem biomass, and, to a minor extent, by the longer time for internodes to mature and accumulate sugar (sugar concentration in the stem was however fairly stable across sowing dates). Also, vegetative phase duration and photoperiod sensitivity can be considered as two key parameters promoting stem sugar content before grain filling. In the same time, it was shown that stem sugar content kept remarkably constant between anthesis and maturity in most of studied genotypes and that the reduction observed for some genotypes was overcome with an early sowing. Moreover, sugar accumulation in the stem between flowering and maturity did not benefit from panicle pruning. These results together suggest that the competition for carbohydrates between stem sugar reserves and grain filling is weak; it is even weaker for big/large stem genotypes with huge sugar reserves in the stem that would buffer a post‐flowering allocation of sugar from the stem to the grains if required. This low competition was confirmed at a finer scale, as no differences were observed in the activity of key enzymes of sucrose metabolism between the sterile and the fertile line of a same genotype.This work demonstrates the potential of sorghum for dual‐purpose in particular for soudano‐sahelian cropping conditions and the interest of using its genetic diversity for this breeding purpose. It provides further knowledge for revisiting the phenotyping strategies to be adopted to investigate the genetic basis of sugar and grain production and their combination. The results are also currently used to improve the way the source‐sink relationships underlying this dual production are formalized in crop and plant models at CIRAD. Such models will be then useful to assist sorghum ideotype exploration for dual purpose.
55

Významní představitelé indické náboženské filosofie 20. století. / Significant exponents of Indian religious philosophy of 20th century

AVRAMOV, Tomáš January 2010 (has links)
The work introduces three exponents of Indian spirituality of the 20th Century. The first chapter deals with the life and teaching of Bhagawan Nityananda who shows various features of the Kashmir shaivism philosophy that is briefly described in the apendix of this chapter. There are examined the main elements of the Nityananda teaching {--} purity of mind and emotions, faith, meditation, siddha yoga and shaktipat. The second chapter introduces the personage and teaching of Neem Karoli Baba. Significant features of his teaching are the emphasis on the love to God and to fellow humans, detachment, service to others, meditation. Part of the chapter is dedicated to his relation to Christ. The third chapter deals with the legendary Indian saint Sai Baba of Shirdi. Although he died in 1918, his populariry in India has steadily grown and he is adored by both, hindus and muslims. His teaching shows many elements of sufism, bhakti yoga and jnana yoga. One of the leading ideas of this work is to show that the personages and teachings of these masters are universal. They prove in their lives not only the existence of the supersensory, spiritual world, but also the unity of people in the relation to this world.
56

Computer simulation of a local municipal wastewater treatment plant

Wan, Ka-hung., 溫家雄. January 1996 (has links)
published_or_final_version / Civil and Structural Engineering / Master / Master of Philosophy
57

Aportacions i tècniques per aconseguir onduladors amb molt baixa taxa de distorsió harmònica

Sudrià Andreu, Antoni 12 July 2005 (has links)
SA l'actualitat les societats industrials avançades basen el seu desenvolupament en les noves Tecnologies de la Informació i les Comunicacions (TIC). Però aquestes tecnologies són molt sensibles a la qualitat i continuïtat del seu subministrament d'energia elèctrica. Per aquest motiu els Sistemes d'Alimentació Ininterrompuda (SAI) i, per tant, els onduladors, estan agafant un nou protagonisme com a elements fonamentals de la nova societat de les TIC.Els equipaments de les TIC són en la seva totalitat equips electrònics que es comporten com a càrregues no lineals per a la xarxa elèctrica que els alimenta. Les càrregues no lineals consumeixen intensitats no sinusoïdals que en el cas d'ésser alimentades per SAI originen una distorsió harmònica de l'ona de tensió sinusoïdal de sortida. En aquests moments els SAI presents al mercat presenten una Distorsió Harmònica Total (THD) no inferior al 5% quan alimenten càrregues no lineals. Disminuir aquesta distorsió és l'actual repte en el disseny dels onduladors dels SAI.El present treball proposa una sèrie de tècniques de control, per tal d'aconseguir onduladors amb una molt baixa taxa de distorsió harmònica, basades en una nova metodologia de control no lineal provenint de la teoria del control en mode lliscant. La principal aportació del control en mode lliscant és la seva robustesa davant les pertorbacions i, per tant, sembla una tecnologia de control perfectament adaptada per a respondre a les càrregues no lineals de les TIC. La principal dificultat de l'aplicació pràctica dels controls que s'estudien en el present treball és la necessitat d'efectuar els càlculs necessaris amb una elevada velocitat per tal d'aconseguir freqüències d'execució de l'algoritme de control no inferiors a 40 kHz.En el present treball s'han dissenyat i construït els prototipus necessaris per tal d'implementar els algoritmes de control estudiats perquè siguin executats en un Processador Digital de Senyal (DSP) amb una freqüència d'execució prou elevada per tal d'aconseguir una distorsió harmònica total (THD) extraordinàriament baixa alimentant càrregues totalment no lineals. Es creu sincerament que no existeix, en aquests moments, al mercat cap altre ondulador amb les característiques aconseguides. / Nowadays, advanced industry societies base their development on Information Technologies and Communication (ITC). But these technologies are very sensitive to quality and continuity of power supply. For this reason Uninterruptible Power Supply (UPS) and, in fact, inverters are taking the chief role in fundamental elements of new societies of ITC.ITC equipment is totally electronics and their behaviour is like a nonlinear load for electrical grid supplying them. Nonlinear loads consume non-sinusoidal currents that in case they are supplied by an UPS produce harmonic distortion of the voltage output wave. Nowadays, UPS in the market achieve a Total Harmonic Distortion (THD) not less than 5% when supplying nonlinear loads. Decrease this distortion is the goal in UPS inverter design.The present work proposes several techniques in order to obtain a low THD. These techniques are based on a new nonlinear control methodology developed from sliding mode control theory. The main feature of sliding mode control is its robustness in front of perturbations and, therefore, it seems a very interesting method for nonlinear loads of the ITC. However, the main difficulty in the actual application is the need for high speed processors in order to achieve high frequency algorithm execution, not less than 40 kHz.In the present work new prototypes have been designed and constructed to implement the studied control algorithms. Theses prototypes use high speed DSPs in order to achieve a low THD in the inverter supplying nonlinear loads. In the market does not exist a similar inverter with similar features like ones developed in this work.
58

Rehabilitate Sai Ying Pun through preservation

麥衍成, Mak, Hin-shing, Ian. January 2007 (has links)
published_or_final_version / abstract / Urban Design / Master / Master of Urban Design
59

Environmental Education Centre

Ng, Hin., 吳衍. January 1995 (has links)
published_or_final_version / Architecture / Master / Master of Architecture
60

Técnicas de control robusto basado en modelo de referencia aplicadas a sistemas modulares de alimentación

Pascual Molto, Marcos 07 May 2008 (has links)
Los sistemas de conversión conectados en paralelo constituyen una solución interesante al problema de proporcionar una tensión regulada a una carga que demanda corrientes elevadas, pues la paralelización de convertidores permite distribuir la corriente entre los diversos módulos, reduciendo el estrés sobre los interruptores y mejorando la fiabilidad del sistema. En sistemas multimodulares de convertidores se necesita normalmente un esquema de control modo corriente, como el control modo corriente media (ACC en inglés), que asegure una correcta compartición de corriente entre los distintos módulos. Con este tipo de control, las características dinámicas del lazo de control dependen considerablemente de las condiciones de línea y carga, así como del número de módulos conectados en paralelo. En esta tesis se han aplicado dos técnicas diferentes de control robusto basado en modelo de referencia (RMF en inglés) a sistemas de conversión en paralelo con el fin de mejorar la robustez del control ACC convencional. El trabajo realizado puede dividirse en tres grandes bloques: En primer lugar, se ha presentado un esquema de control RMF paso-alto que ha sido aplicado al lazo de tensión de un convertidor DC-DC multimodular tipo Buck. El esquema de control propuesto añade un lazo interno adicional a los lazos de corriente y de tensión del control ACC convencional, reduciendo la sensibilidad del lazo externo de tensión frente a los parámetros variables de la etapa de potencia: número de módulos, tensión de entrada, carga y tolerancias de los componentes. Además, el lazo mejora considerablemente el rechazo de perturbaciones del convertidor, esto es, impedancia de salida y audiosusceptibilidad en lazo cerrado, en baja frecuencia si se compara con el control ACC convencional. La principal limitación de este esquema de control es que su funcionamiento está limitado por el rizado de conmutación presente en la tensión de salida, dado que se utiliza un regulador auxiliar...... / Pascual Molto, M. (2008). Técnicas de control robusto basado en modelo de referencia aplicadas a sistemas modulares de alimentación [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/1981 / Palancia

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