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1
Ayora, Pauline. "Recrutement de ressources attentionnelles au cours de la production du langage". Thesis, Aix-Marseille 1, 2011. http://www.theses.fr/2011AIX10072.
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La production du langage est une activité cognitive longtemps restée étudiée de manière isolée des processus cognitifs plus généraux pouvant sous-tendre sa réalisation. Notre approche a été de contribuer à la dynamique naissante d’une ouverture de la psycholinguistique aux autres domaines de la psychologie cognitive, en spécifiant les interactions qu’entretiennent les mécanismes langagiers avec les mécanismes attentionnels. Pour ce faire, nous avons notamment étudié dans quelle mesure la production d’une information linguistique isolée repose sur des mécanismes de sélection. Conjointement, nous avons tenté de mettre en évidence les mécanismes attentionnels sous-tendant ces mécanismes de sélection lexicale. Les sélections de deux types de mots grammaticaux ont été comparées : les mots de la classe ouverte et les mots de la classe fermée. Les résultats ont révélé que la sélection des deux types de mots, les mots de la classe fermée qui structurent la phrase et les mots de la classe ouverte qui lui donnent un sens, recrutent des ressources attentionnelles. Aussi, nous avons montré que l’effet d’interférence sémantique –supposé affecter un mécanisme de compétition à l’étape de sélection lexicale- peut être résolu avant l’engagement de ressources attentionnelles. Ce résultat suggère que l’effet d’interférence sémantique reflète un mécanisme situé avant la sélection lexicale. Une dernière étude s’est proposé d’explorer la dynamique temporelle de notre système de production à sélectionner plusieurs mots dans un contexte de production de séquences de mots, tel que celui de syntagmes nominaux. Les résultats chronométriques ont révélé que les mots sont sélectionnés de manière strictement séquentielle, une dynamique suggérant que le recrutement de ressources attentionnelles pour la sélection d’une information linguistique isolée peut contraindre leur agencement dans un contexte de production plus naturelLanguage production is a cognitive activity long studied in isolation from more general cognitive processes that could underlie its achievement. Our approach aimed to contribute to the emerging dynamics of the opening of psycholinguistics to other domains of cognitive psychology by specifying how linguistic mechanisms interact with attentional mechanisms. To do so, we first investigated to which extent producing a single linguistic unit relies on selection mechanisms. Also, we highlighted the attentional mechanisms underlying these lexical selection mechanisms: The selections of two types of grammatical words were compared: open- and closed- class words. Results revealed that the selections of both, closed-class words structuring the phrase, and open-class words conveying meaning, require attentional resources. In a third study, we showed that the semantic interference effect - affecting a competition mechanism supposedly taking place at the level of lexical selection- can in fact be resolved before the involvement of central attentional resources. This suggests that this semantic interference effect possibly reflects a mechanism taking place prior to lexical selection. In a last study, we explored the temporal dynamics of our production system when engaged in the selection of several words within a sequence, using noun phrases. Chronometric results revealed that words are selected strictly sequentially. This dynamics suggests that the way attentional resources are recruited for the selection of an isolated linguistic unit can constrain the way several words are produced in a more natural speaking context
2
Preater, J. "Sequential multiple selection problems". Thesis, Keele University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293741.
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Caglar, Musa. "Multiple Criteria Project Selection Problems". Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610945/index.pdf.
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In this study, we propose two biobjective mathematical models based on
PROMETHEE V method for project selection problems. We develop an interactive
approach (ib-PROMETHEE V) including data mining techniques to solve the first
proposed mathematical model. For the second model, we propose NSGA-II with
constraint handling method. We also develop a Preference Based Interactive
Multiobjective Genetic Algorithm (IMGA) to solve the second proposed
mathematical model. We test the performance of NSGA-II with constraint handling
method and IMGA on randomly generated test problems.
4
Lu, Di. "Antenna selection schemes for multiple-input multiple out systems". Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.493529.
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Theoretical research show that wireless communication systems using multiple-input multiple-output (MIMO) antennas can provide a very high spectral efficiency in rich scattering environments. This thesis investigates issues of antenna selection in MIMO systems with an emphasis on the criteria and algorithms of receive antenna selection in layered spatial multiplexing architectures.
5
Baldauf, Daniel. "Visual selection of multiple movement goals". Diss., lmu, 2008. http://nbn-resolving.de/urn:nbn:de:bvb:19-81306.
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楊良河 y Leung-ho Philip Yu. "Some multiple comparison selection procedures and their applications". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1993. http://hub.hku.hk/bib/B31233351.
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Yu, Leung-ho Philip. "Some multiple comparison selection procedures and their applications /". [Hong Kong] : University of Hong Kong, 1993. http://sunzi.lib.hku.hk/hkuto/record.jsp?B1345691X.
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Lehmann, Rüdiger. "Transformation model selection by multiple hypotheses testing". Hochschule für Technik und Wirtschaft Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:520-qucosa-211719.
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Transformations between different geodetic reference frames are often performed such that first the transformation parameters are determined from control points. If in the first place we do not know which of the numerous transformation models is appropriate then we can set up a multiple hypotheses test. The paper extends the common method of testing transformation parameters for significance, to the case that also constraints for such parameters are tested. This provides more flexibility when setting up such a test. One can formulate a general model with a maximum number of transformation parameters and specialize it by adding constraints to those parameters, which need to be tested. The proper test statistic in a multiple test is shown to be either the extreme normalized or the extreme studentized Lagrange multiplier. They are shown to perform superior to the more intuitive test statistics derived from misclosures. It is shown how model selection by multiple hypotheses testing relates to the use of information criteria like AICc and Mallows’ Cp, which are based on an information theoretic approach. Nevertheless, whenever comparable, the results of an exemplary computation almost coincide.
9
Lehmann, Rüdiger. "Transformation model selection by multiple hypotheses testing". Hochschule für Technik und Wirtschaft Dresden, 2014. https://htw-dresden.qucosa.de/id/qucosa%3A23299.
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Transformations between different geodetic reference frames are often performed such that first the transformation parameters are determined from control points. If in the first place we do not know which of the numerous transformation models is appropriate then we can set up a multiple hypotheses test. The paper extends the common method of testing transformation parameters for significance, to the case that also constraints for such parameters are tested. This provides more flexibility when setting up such a test. One can formulate a general model with a maximum number of transformation parameters and specialize it by adding constraints to those parameters, which need to be tested. The proper test statistic in a multiple test is shown to be either the extreme normalized or the extreme studentized Lagrange multiplier. They are shown to perform superior to the more intuitive test statistics derived from misclosures. It is shown how model selection by multiple hypotheses testing relates to the use of information criteria like AICc and Mallows’ Cp, which are based on an information theoretic approach. Nevertheless, whenever comparable, the results of an exemplary computation almost coincide.
10
Bahceci, Israfil. "Multiple-Input Multiple-Output Wireless Systems: Coding, Distributed Detection and Antenna Selection". Diss., Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-08262005-022321/.
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Thesis (Ph. D.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2006.Altunbasak, Yucel, Committee Chair ; Mersereau, Russell M., Committee Member ; Fekri, Faramarz, Committee Member ; Smith, Glenn, Committee Member ; Huo, Xiaoming, Committee Member. Includes bibliographical references.
11
Baring, Michael Robert. "Selection of a multiple disease resistant runner-type peanut". Texas A&M University, 2003. http://hdl.handle.net/1969.1/5748.
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Four F2:4 populations of peanut (Arachis hypogaea L.) resulting from the complex
cross Tamrun 96 X Tx901639-3 X Sun Oleic 95R were grown in three disease nurseries
over a 2 year period. Three separate selection techniques were applied to determine
which technique would provide the most effective method for selecting a multiple
disease resistant, runner-type peanut. Technique I involved selection at a tomato spotted
wilt virus nursery during the first cycle of selection and transferring the selections to a
Sclerotinia minor (Jagger) nursery for a second cycle of selection in year two.
Technique II was the reciprocal of Technique I. Technique III involved selection of the
populations at a multiple disease nursery for two consecutive years. Selections were
based on disease ratings, growth habits, pod and seed characteristics, and oleic/linoleic
acid ratios. Disease ratings were scored as percentage infection on a scale of 0 (0% plot
infected) to 10 (100% plot infected). Disease severity was also rated on a scale of 1
(symptoms noted, but no yield effects) to 10 (plant death, no yield). There were two
final selections for each population using each selection technique that were yield tested
over a 2 year period to determine which technique was superior. The yield tests were
conducted using completely randomized block design at all three disease nurseries with an additional disease-free site included. Data for disease ratings, yield, grade, and value
per hectare were combined within locations across years. All three selection techniques
provided lines with more disease resistance than the parents; however, there was no
difference detected between the effectiveness of the three techniques in terms of disease
resistance, yield, grade, or value per hectare.
12
Lin, Chen-ju. "New Methods for Eliminating Inferior Treatments in Clinical Trials". Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/16262.
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Multiple comparisons and selection procedures are commonly studied in research and employed in application. Clinical trial is one of popular fields to which the subject of multiple comparisons is extensively applied. Based on the Federal Food, Drug, and Cosmetic Act, drug manufacturers need to not only demonstrate safety of their drug products but also establish effectiveness by substantial evidence in order to obtain marketing approval. However, the problem of error inflation occurs when there are more than two groups to compare with at the same time. How to design a test procedure with high power while controlling type I error becomes an important issue.
The treatment with the largest population mean is considered to be the best one in the study. Potentially the best treatments can receive increased resources and further investigation by excluding clearly inferior treatments. Hence, a small number of possibly the best treatments is preferred. This thesis focuses on the problem of eliminating the less effective treatments among three in clinical trials. The goal is to increase the ability to identify any inferior treatment providing that the probability of excluding any best treatment is guaranteed to be less than or equal to alpha. A step-down procedure is applied to solve the problem.
The general step-down procedure with fixed thresholds is conservative in our problem. The test is not efficient in rejecting the less effective treatments. We propose two methods with sharper thresholds to improve current procedures and construct a subset containing strictly inferior treatments. The first method, the restricted parameter space approach, is designed for the scenario when prior information about range of treatment means is known. The second method, the step-down procedure with feedback, utilizes observations to modify the threshold and controls error rate for the whole parameter space. The new procedures have greater ability to detect more inferior treatments than the standard procedure. In addition, type I error is also controlled under mild violation of the assumptions demonstrated by simulation.
13
Rajabi, Siamak. "Multiple criteria subset selection under interdependence of actions". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq22230.pdf.
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Perez-Ramirez, Javier. "Relay Selection for Multiple Source Communications and Localization". International Foundation for Telemetering, 2013. http://hdl.handle.net/10150/579585.
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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, NVRelay selection for optimal communication as well as multiple source localization is studied. We consider the use of dual-role nodes that can work both as relays and also as anchors. The dual-role nodes and multiple sources are placed at fixed locations in a two-dimensional space. Each dual-role node estimates its distance to all the sources within its radius of action. Dual-role selection is then obtained considering all the measured distances and the total SNR of all sources-to-destination channels for optimal communication and multiple source localization. Bit error rate performance as well as mean squared error of the proposed optimal dual-role node selection scheme are presented.
15
Vincent, Emmanuelle. "Sequential designs for clinical trials involving multiple treatments". Thesis, University of Reading, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297621.
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Cai, Xun Ph D. Massachusetts Institute of Technology. "Algorithms for transform selection in multiple-transform video compression". Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/74903.
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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2012.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 73).
Selecting proper transforms for video compression has been based on the rate-distortion criterion. Transforms that appear reasonable are incorporated into a video coding system and their performance is evaluated. This approach is tedious when a large number of transforms are used. A quick approach to evaluate these transforms is based on the energy compaction property. With a proper transform, an image or motion-compensated residual can be represented quite accurately with a small fraction of the transform coefficients. This is referred to as the energy compaction property. However, when multiple transforms are used, selecting the best transform for each block that leads to the best energy compaction is difficult. In this thesis, we develop two algorithms to solve this problem. The first algorithm, which is computationally simple, leads to a locally optimal solution. The second algorithm, which is more intensive computationally, gives a globally optimal solution. We provide a detailed discussion on the ideas and steps of the algorithms, followed by the theoretical analysis of the performance. We verify that these algorithms are useful in a practical setting, by comparing and showing the consistency with rate-distortion results from previous research. We apply the algorithms when a large number of transforms are used. These transforms are equal-length 1D-DCTs in 4x4 blocks, which try to characterize as many 1D structures as possible in motion-compensation residuals. By evaluating the energy compaction property of up to 245 transforms, we quickly determine whether these transforms will bring potential performance increase in a video coding system.
by Xun Cai.
S.M.
17
Lucas, John Finley. "Design and Evaluation of 3D Multiple Object Selection Techniques". Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/31769.
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Few researchers have addressed the important issue of three-dimensional multiple object selection (MOS) in immersive Virtual Environments (VEs). We have developed a taxonomy of the MOS task as a framework for exploring the design space of these techniques. In this thesis, we describe four techniques for selecting multiple objects in immersive VEs. Of the four techniques, two are serial (where only one object can be indicated per operation), and two are parallel (where one or more objects may be indicated per operation). Within each of the two categories we also investigated two metaphors of interaction: a 3D spatial metaphor and the pen and tablet metaphor. Two usability studies were used to evaluate the four techniques, iterate their designs, and gain a deeper understanding of the design space of MOS techniques. The results from our studies show that parallel MOS techniques can select objects faster than serial techniques as the number of target objects increase. We also show that effective techniques for MOS in immersive VEs can be created using both pen and tablet and 3D metaphors.Master of Science
18
Latham, Andrew C. "Multiple-Instance Feature Ranking". Case Western Reserve University School of Graduate Studies / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=case1440642294.
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Cheung, Chi-Wai. "Probabilistic rank aggregation for multiple SVM ranking /". View abstract or full-text, 2009. http://library.ust.hk/cgi/db/thesis.pl?CSED%202009%20CHEUNG.
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Lin, Yong. "A Partitioning Approach for the Selection of the Best Treatment". Bowling Green State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1368576414.
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Butler, Joe Matthew. "The selection and analysis of multiple SNPs in candidate genes". Thesis, University of Leeds, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.522922.
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Shahrestani, Mehdi. "Multiple attribute decision making for HVAC&R systems selection". Thesis, University of Reading, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.603550.
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Buildings account for 40% of total energy consumption in the UK and more than 55% of this energy is used by heating, ventilation, air-conditioning and refrigeration (HVAC&R) systems. This significant energy demand and the ascending trend in utilising HVAC&R systems together with the global need to impose energy-efficiency measures underline the importance of selecting the most appropriate HVAC&R system in a design process. In the early stages of the design and construction of a building, the design engineer is responsible for considering various systems in the process of HVAC&R systems selection. Although a broad range of simulation tools is developed for performance evaluation of HVAC&R systems, none of them is capable of performing a decision making process for HVAC&R systems selection. Therefore, the contribution of this study to knowledge has been the development of a multiple attribute decision making tool for HVAC&R systems selection for office buildings in the UK. Firstly, a set of reference office buildings was developed as representative of the UK office building stock and one of them was selected for further study. Then, a set of common alternative HVAC&R systems was identified. The reference office building, assumed to be located in London, together with the alternative HVAC&R systems were simulated in the TRNSVS and their technical performance, economic aspects and environmental impacts were assessed. Finally, to choose the most appropriate system among the alternatives a fuzzy multiple attribute decision making method was used to formulate the process of decision making. The scope of this study was further extended by considering 18 climate regions in the UK together with the effect of climate change in the decision making process using the degree-days theory. In addition, the UK Government's electricity decarbonisation plans were integrated to the developed decision making model. Finally, the model was transferred into a computational tool with a user-friendly interface developed in Matlab.
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吳焯基 y Cheuk-key Allen Ng. "Multiple comparison and selection of location parameters of exponential populations". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1990. http://hub.hku.hk/bib/B31231949.
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Herrero, Jose Luis. "Multiple object selection, consolidation and maintenance in visual working memory". Thesis, University of Sunderland, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.440354.
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Ng, Cheuk-key Allen. "Multiple comparison and selection of location parameters of exponential populations /". [Hong Kong] : University of Hong Kong, 1990. http://sunzi.lib.hku.hk/hkuto/record.jsp?B12792421.
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Cooprider, Curt Blaine. "Equipment selection and assembly system design under multiple cost scenarios". Thesis, Massachusetts Institute of Technology, 1989. http://hdl.handle.net/1721.1/14308.
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Heng, Brian A. 1977. "Adaptive multiple description mode selection for error resilient video communications". Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/34463.
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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2005.Includes bibliographical references (p. 127-132).
Streaming video applications must be able to withstand the potentially harsh conditions present on best-effort networks like the Internet, including variations in available bandwidth, packet losses, and delay. Multiple description (MD) video coding is one approach that can be used to reduce the detrimental effects caused by transmission over best-effort networks. In a multiple description system, a video sequence is coded into two or more complementary streams in such a way that each stream is independently decodable. The quality of the received video improves with each received description, and the loss of any one of these descriptions does not cause complete failure. A number of approaches have been proposed for MD coding, where each provides a different tradeoff between compression efficiency and error resilience. How effectively each method achieves this tradeoff depends on network conditions as well as on the characteristics of the video itself. This thesis proposes an adaptive MD coding approach that adapts to changing conditions through the use of MD mode selection. The encoder in this system is able to accurately estimate the expected end-to-end distortion, accounting for both compression and packet-loss-induced distortions, as well as for the bursty nature of channel losses and the effective use of multiple transmission paths.
(cont.) With this model of the expected end-to-end distortion, the encoder selects between MD coding modes in a rate-distortion (R-D) optimized manner to most effectively trade-off compression efficiency for error resilience. We show how this approach adapts to both the local characteristics of the video and to network conditions and demonstrate the resulting gains in performance using an H.264-based adaptive MD video coder. We also analyze the sensitivity of this system to imperfect knowledge of channel conditions and explore the benefits of using such a system with both single and multiple paths.
by Brian A. Heng.
Ph.D.
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Pérez, Strutz Cristián Marcelo. "Training image selection and model validation using multiple point statistics". Tesis, Universidad de Chile, 2013. http://repositorio.uchile.cl/handle/2250/114016.
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Magíster en MineríaLa correcta caracterización de propiedades geológicas es esencial para la industria minera debido a su influencia en distintos procesos, especialmente en la estimación de recursos. Una característica positiva del variograma es su capacidad de inferir la continuidad espacial de la variable analizada a partir de los datos condicionantes, los cuales corresponden generalmente a datos de sondajes. Técnicas geoestadísticas convencionales basadas en el variograma permiten construir modelos probabilísticos y cuantificar la incertidumbre asociada a éstos. Sin embargo, estas técnicas son incapaces de reproducir estructuras espaciales complejas, frecuentemente observadas en atributos geológicos, debido a la inferencia de continuidad espacial de segundo orden realizada mediante el variograma. Los algoritmos de simulación de patrones han sido desarrollados en los últimos años para superar este problema. Estos algoritmos requieren de una fuente exhaustiva de patrones, conocida como imagen de entrenamiento, a partir de la cual pueda ser realizada una inferencia representativa de estadísticas de patrones. La imagen de entrenamiento corresponde generalmente a un modelo conceptual del fenómeno geológico que genera la estructura espacial de la variable por lo que su construcción se ve frecuentemente sometida a criterios subjetivos. Distintos especialistas podrían incluso construir imágenes distintas basados en su interpretación personal de la geología. Por estos motivos es que la selección y construcción de la imagen de entrenamiento se ha convertido en una de las principales dificultades al implementar en la práctica estos nuevos algoritmos de simulación. Este trabajo aborda el desarrollo de una herramienta geoestadística capaz de proveer criterios medibles para la selección de una imagen de entrenamiento. La herramienta permite generar un ranking de imágenes de entrenamiento de acuerdo a su compatibilidad espacial relativa y absoluta con los datos condicionantes. El algoritmo logra obtener la compatibilidad relativa mediante el cálculo de la probabilidad condicional de encontrar patrones de datos condicionantes en una determinada imagen de entrenamiento, sujeto a la condición de que los patrones se encuentren contenidos en el conjunto de imágenes disponibles. La compatibilidad absoluta es obtenida mediante el cálculo de la proporción de patrones de datos condicionantes contenidos en una determinada imagen. Se desarrollaron dos estrategias de cálculo de compatibilidad. La primera, sólida desde el punto de vista estadístico, requiere del cálculo explícito de la distribución de probabilidad condicional, mientras que la segunda, basada en un muestreo directo, permite obtener resultados similares a un menor costo computacional. El algoritmo de búsqueda de patrones es finalmente modificado para generar una herramienta que permita validar resultados de simulaciones en términos de su calidad e integridad, expresados respectivamente en términos de la proporción de patrones de resultados encontrados en la imagen y la proporción de patrones de la imagen encontrados en los resultados. La aplicabilidad de las herramientas desarrolladas se evaluó satisfactoriamente en casos de estudio generados con datos sintéticos y reales. Se puede determinar que los métodos son aplicables más allá del campo de la geoestadística y que pueden ser usados como ayuda para la interpretación y el modelamiento geológico.
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Guo, Xinyu. "Improved Feature-Selection for Classification Problems using Multiple Auto-Encoders". University of Cincinnati / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1522420335154157.
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Bilgin, Arda. "Selection And Fusion Of Multiple Stereo Algorithms For Accurate Disparity Segmentation". Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/2/12610133/index.pdf.
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Fusion of multiple stereo algorithms is performed in order to obtain accurate disparity segmentation. Reliable disparity map of real-time stereo images is estimated and disparity segmentation is performed for object detection purpose. First,
stereo algorithms which have high performance in real-time applications are chosen among the algorithms in the literature and three of them are implemented. Then, the results of these algorithms are fused to gain better performance in disparity estimation. In fusion process, if a pixel has the same disparity value in all algorithms, that disparity value is assigned to the pixel. Other pixels are labelled as unknown
disparity. Then, unknown disparity values are estimated by a refinement procedure where neighbourhood disparity information is used. Finally, the resultant disparity
map is segmented by using mean shift segmentation.
The proposed method is tested in three different stereo data sets and several real stereo pairs. The experimental results indicate an improvement for the stereo analysis performance by the usage of fusion process and refinement procedure.
Furthermore, disparity segmentation is realized successfully by using mean shift segmentation for detecting objects at different depth levels.
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Hall, Linnea Suzanne. "Habitat selection by the elegant trogon (Trogon elegans) at multiple scales". Diss., The University of Arizona, 1996. http://hdl.handle.net/10150/187497.
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In this dissertation I discuss several facets of the ecology of the elegant trogon (Trogon elegans). In Chapter 1, I assessed habitat selection by the trogon from 1993 to 1995 at three spatial scales (those of the mountain and canyon, home range, and microsite scales). At the broadest (inter-mountain and inter-canyon) scale, trogons were positively associated with cover by sycamore, pinyon, and juniper vegetation, and the abundances of three bird species. At the intermediate scale, radio-tagged trogons in the Huachuca and Santa Rita mountains used both upland and riparian areas, and selectively used sites with dense vegetation within those areas. At the microsite scale, nest sites of trogons were primarily located in sycamore trees in riparian areas. Successful nests could be discriminated from unsuccessful nests on the basis of three variables. Adult trogons used trees that were mostly dead for several behaviors besides nesting, and males foraged from sycamore and oak trees. Across all three scales, trogons were associated with variables describing sycamores, junipers, pines, and oaks, indicating that these trees were important to elegant trogon habitat use in Arizona. In Chapter 2, I discussed the behavior and phenology of nesting elegant trogons in the Chiricahua, Huachuca, and Santa Rita mountains in 1993-1994. I described the average durations and characteristics of nest advertisement, incubation, brooding, nestling attendance, and fledgling attendance behaviors. Elegant trogons in Arizona had different behaviors from other members of Neotropical Trogonidae, especially in regards to their durations of incubation and feeding. In Chapter 3, I present analyses of disturbance records collected while observing trogons in 1993-1995, and the finding that elegant trogons did not react strongly to most contacts with humans. However, on some occasions trogons reacted long enough to humans to potentially impact their productivity at nest sites. Therefore, some protection of nesting trogons may be warranted. In general, management of trogons in Arizona will require consideration of whole watersheds, including the condition of riparian water tables and upland vegetation.
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Yu, Chunxia y 禹春霞. "Agent-based supplier selection model for multiple products with synergy effect". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B49617710.
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Supplier selection is an important problem in supply chain management (SCM), and has attracted the attention of many researchers. Most previous research on supplier selection is based on the assumption that a single product is required. For the few supplier selection models for multiple products, they handled the problem on a product-by-product manner. In such cases, the synergy effect between products which could impact the choice of cooperative suppliers is not taken into account. However, it is practical for the purchasing company to procure multiple products simultaneously and benefit from the synergy effect between products. It is necessary to incorporate the synergy effect between products in multi-product supplier selection.
This thesis presents a multi-product supplier selection model incorporating the synergy effect between products. The model is composed of three sub-models, i.e., the synergy determination sub-model, the supplier pre-selection sub-model and the negotiation-based final selection sub- model. As the agent-based technology is a natural tool for modeling distributed systems, the proposed multi-product supplier selection model is realized as a multi-agent system (MAS) with agents representing the relevant parties and functions of the proposed model. Agents of the MAS are able to interact with each other through the respective agent interaction protocols defined specifically for the three sub-models.
The synergy determination sub-model is to determine the synergy effect between products. The term complementarity is used to represent the synergy effect between products. The product complementarity measure criteria are formulated based on the activities of automobile manufacturers. Complementarity measure methods are then proposed. The product bundle determination algorithm is presented to generate preferred product bundles. The interaction of agents involving in the sub-model is governed by the synergy determination protocol.
The supplier pre-selection sub-model is to shortlist the qualified and competitive suppliers for multiple products. The pre-selection criteria catering for the multi-product environment are formulated. Both the general characteristics and performances of suppliers, and the capabilities supporting multi-product transactions are included in the pre-selection criteria. The TOPSIS-based supplier pre-selection algorithm is established to evaluate suppliers on these criteria. The interaction of agents involving in the sub-model is governed by the pre-selection protocol.
The negotiation-based final selection sub-model is to select the cooperative suppliers for multiple products. In order to cater for the multi-product environment, multiple bids are allowed in the negotiation model. The corresponding bid utility function and negotiation strategies are presented. The B&B-based winner determination algorithm is presented to determine the cooperative suppliers. The hybrid protocol of combinatorial procurement auction and multi-bilateral bargaining is established to govern the interaction of agents in the sub-model.
A case study has been executed to demonstrate the feasibility, effectiveness and usefulness of the supplier selection model for multiple products with synergy effect. The results indicate that the proposed supplier selection model is able to select suppliers for multiple products simultaneously and incorporate the synergy effect between products. In addition, the agent interaction protocols and related algorithms used in the agent-based system supporting the multi-product supplier selection model are suitable and effective.published_or_final_version
Industrial and Manufacturing Systems Engineering
Doctoral
Doctor of Philosophy
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Tailoka, Frank Patson. "An efficient strategy for the selection of acceptable multiple regression models". Thesis, University of Essex, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265195.
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Wacloff, Robert Allen. "Health care self-selection in a multiple option corporate benefit program". Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/17259.
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Thesis (Ph. D.)--Massachusetts Institute of Technology, Whittaker College of Health Sciences and Technology, 1990.Includes bibliographical references (leaves 212-215).
by Robert Allen Wacloff.
Ph.D.
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Callwood, Alison. "Developing and evaluating the multiple mini interview in student midwife selection". Thesis, University of Surrey, 2015. http://epubs.surrey.ac.uk/808262/.
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The multiple mini interview (MMI) is an admissions instrument designed to replace the personal interview in health care student selection. Its effectiveness has been evaluated in medical student recruitment processes (Eva et al., 2004a, Roberts et al., 2014). At the commencement of this research no reliability, validity, or acceptability studies had been published specifically in relation to student midwife selection. Study objectives: to develop, pilot and evaluate the reliability, validity and acceptability of MMIs in student midwife selection in a Higher Education Institution (HEI) in the United Kingdom (UK). A dual paradigmatic dialectical enquiry was used in a multi-method case study. A literature review and qualitative work were conducted to identify the desirable personal qualities of a student midwife. This was followed by the systematic development of a customised eight station, five-minute MMI model. Sixty-two students from the BSc Midwifery Studies, September 2011 and 2012 cohorts, at the University of Surrey, volunteered to undertake ‘mock’ MMIs in the first week of their programme. Fifty-seven participants were followed up having completed their first year. Predictive validity was assessed using students’ end of year OSCE and mentor grading; station reliability, including inter-station and internal consistency, were also examined. Interviewers’ (n=9) and candidates’ (n=62) views of MMIs were obtained from a focus group and semi-structured questionnaires respectively. The literature review revealed that acknowledgement of the importance of ‘emotionality’ or an emotional dimension in the relationship between a woman and her midwife was missing from key professional, regulatory (Nursing and Midwifery Council, 2009, 2010, International Confederation of Midwives, 2011) and government documentation (Department of Health, DH,2012). According to the Department of Health (DH, 2013), selection to all National Health Service (NHS) funded training posts should incorporate recruitment for the NHS Constitution values (DH, 2012). In the absence of any mention of ‘emotionality’ it is suggested that this requires more specific recognition in considerations of what is important to appraise at selection. No statistically significant associations were found between students’ MMI score and their subsequent performance in clinical practice. The University Registrar would not consent to ‘live’ selection using MMIs in the absence of midwifery-specific evidence; participants were therefore students who had already been accepted onto an undergraduate midwifery programme. This has been addressed in an on-going longitudinal follow up-study. Reliability (internal consistency) was ‘excellent’ with Cronbach’s alpha scores between 0.91-0.97 across eight stations. Inter-station reliability findings suggested that each station measured different independent constructs with only a moderate positive correlation between two stations, kindness, compassion and respect for privacy and dignity (p<0.01). All other stations indicated little or no relationship offering additional support to the reliability of the scales. Candidates stated that undertaking MMIs would not discourage them from applying to the University as they felt they were a fair assessment instrument. They suggested that the multi- interview format was a positive feature which allowed them to recover from a poor performance at any one station. Overall, 23 participants (37%) reported a preference for MMIs compared to 22 (35%) who preferred a one-to-one personal interview format; 44 participants (71%) found the personal interview more daunting than MMIs. Interviewers appreciated the parity of opportunity afforded to candidates through the standardisation of the interview process. They were willing to adopt MMIs in future selection processes provided any anticipated complications were resolved. MMIs were shown to be reliable in the context and model defined. The insightful information obtained has informed a ‘roll out’ to MMIs across all health care student selection at the University of Surrey as well as being used by Health Education England as a case study example (HEE, 2014).
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Lehmann, Rüdiger y Michael Lösler. "Multiple Outlier Detection: Hypothesis Tests versus Model Selection by Information Criteria". Hochschule für Technik und Wirtschaft Dresden, 2016. https://htw-dresden.qucosa.de/id/qucosa%3A23307.
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The detection of multiple outliers can be interpreted as a model selection problem. Models that can be selected are the null model, which indicates an outlier free set of observations, or a class of alternative models, which contain a set of additional bias parameters. A common way to select the right model is by using a statistical hypothesis test. In geodesy data snooping is most popular. Another approach arises from information theory. Here, the Akaike information criterion (AIC) is used to select an appropriate model for a given set of observations. The AIC is based on the Kullback-Leibler divergence, which describes the discrepancy between the model candidates. Both approaches are discussed and applied to test problems: the fitting of a straight line and a geodetic network. Some relationships between data snooping and information criteria are discussed. When compared, it turns out that the information criteria approach is more simple and elegant. Along with AIC there are many alternative information criteria for selecting different outliers, and it is not clear which one is optimal.
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Lehmann, Rüdiger y Michael Lösler. "Multiple Outlier Detection: Hypothesis Tests versus Model Selection by Information Criteria". Hochschule für Technik und Wirtschaft Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:520-qucosa-225770.
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The detection of multiple outliers can be interpreted as a model selection problem. Models that can be selected are the null model, which indicates an outlier free set of observations, or a class of alternative models, which contain a set of additional bias parameters. A common way to select the right model is by using a statistical hypothesis test. In geodesy data snooping is most popular. Another approach arises from information theory. Here, the Akaike information criterion (AIC) is used to select an appropriate model for a given set of observations. The AIC is based on the Kullback-Leibler divergence, which describes the discrepancy between the model candidates. Both approaches are discussed and applied to test problems: the fitting of a straight line and a geodetic network. Some relationships between data snooping and information criteria are discussed. When compared, it turns out that the information criteria approach is more simple and elegant. Along with AIC there are many alternative information criteria for selecting different outliers, and it is not clear which one is optimal.
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Williams, Ian E. "Multipath Mitigation for Aeronautical Telemetry with Multiple Antennas". International Foundation for Telemetering, 2009. http://hdl.handle.net/10150/606143.
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ITC/USA 2009 Conference Proceedings / The Forty-Fifth Annual International Telemetering Conference and Technical Exhibition / October 26-29, 2009 / Riviera Hotel & Convention Center, Las Vegas, NevadaFrequency selective multipath is a key performance limiter for aeronautical telemetry applications. Our research explores multipath mitigation techniques with ARTM Tier-1 waveforms using linear adaptive filters, multiple receive antennas and error-based best source selection. Single antenna adaptive equalization alone is unable to substantially improve performance under certain channel conditions. Analytical investigations demonstrate that nonlinear channel phase response is the principal cause of performance loss. In this adverse environment, spatial diversity with multiple receive antennas along with error-based best source selection are capable of improving bit error rate performance by 5dB for each additional antenna.
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Dhakal, Preeti. "Tracing sperm in multiply-mated female Anastrepha suspensa, (Diptera:Tephridae) /". View online, 2008. http://repository.eiu.edu/theses/docs/32211131458627.pdf.
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King, Robert A. "Perceptual grouping selection rules in visual search : methods of sub-group selection in multiple target visual search tasks". Diss., Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/32821.
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Lu, I.-Chen (Jennifer). "Robust portfolio management with multiple financial analysts". Thesis, Loughborough University, 2015. https://dspace.lboro.ac.uk/2134/18045.
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Portfolio selection theory, developed by Markowitz (1952), is one of the best known and widely applied methods for allocating funds among possible investment choices, where investment decision making is a trade-off between the expected return and risk of the portfolio. Many portfolio selection models have been developed on the basis of Markowitz's theory. Most of them assume that complete investment information is available and that it can be accurately extracted from the historical data. However, this complete information never exists in reality. There are many kinds of ambiguity and vagueness which cannot be dealt with in the historical data but still need to be considered in portfolio selection. For example, to address the issue of uncertainty caused by estimation errors, the robust counterpart approach of Ben-Tal and Nemirovski (1998) has been employed frequently in recent years. Robustification, however, often leads to a more conservative solution. As a consequence, one of the most common critiques against the robust counterpart approach is the excessively pessimistic character of the robust asset allocation. This thesis attempts to develop new approaches to improve on the respective performances of the robust counterpart approach by incorporating additional investment information sources, so that the optimal portfolio can be more reliable and, at the same time, achieve a greater return.
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Yenihayat, Guven. "Opportunistic Multiple Relaying In Wireless Ad Hoc Networks". Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613334/index.pdf.
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Cooperative relaying systems aim to improve weak communication links by exploiting the spatial diversity obtained by the statistically independent channels between relays and the destination. In this thesis a cooperative relaying scheme called the Opportunistic Multiple Relaying (OMR) is proposed with its special receiver structure. Unlike most relaying schemes in the literature, multiple relay nodes are allowed to transmit in nonorthogonal channels in OMR without requiring any control overhead for relay coordination. OMR is compared to a benchmark scheme called the Selection Relaying (SR) in which the relay node is preselected by the source before transmission according to the average channel quality information. It is observed that OMR performs significantly better than SR in terms of error performance.
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Backes, Aaron J. "A multiple case study of six exemplary band directors' repertoire selection processes". Bowling Green, Ohio : Bowling Green State University, 2010. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=bgsu1268079057.
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Bredell, Marius. "A comparative study of multiple criteria decision making methods for contractor selection". Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53232.
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Thesis (MBA)--Stellenbosch University, 2003.ENGLISH ABSTRACT: One of the most difficult and more important decisions taken by a client is the selection of the most appropriate contractor. It requires the assessment of various factors, often conflicting, in order to determine the most appropriate contractor and are therefore classified as a problem that can be resolved by using multiple criteria decision making methods. The act of decision making is never an easy one and requires a sound understanding of the requirement, the alternatives and the model used to assess the alternatives in terms of the requirement in order to instil confidence that the most appropriate alternative is selected. The appropriateness of the methods used in contractor evaluation has a vital impact on the cost of the transaction. The three broad categories, or schools of thought, relating to multiple criteria decision making (MCDM) methods are assessed in terms of their applicability to the contractor selection problem within a quasi-government organisation, namely Armscor. Of the three categories, only the methods of the value measurement category were found to be appropriate within the current legislative framework of the Preferential Procurement Act, which seeks to express the performance of an offer as a unique numerical function. The old contractor selection model of direct point allocation on a qualitative scale is shown to be inappropriate, especially in terms of the additive utility assumption of single dimensional units. The proposed new model makes use of the weighted product model that is not restricted by the additive utility assumption as it results in dimensionless analysis of the criteria. The utility functions associated with the quantitative criteria uses curves which are raised to the power of the confidence variable. The arithmetic mean of these variables represents the group’s confidence level associated with each contractor’s offer in the correctness and/or its ability to maintain the stated level of performance. Furthermore, the analytic hierarchy process is used for the assessment of the qualitative criteria. The new model, although not perfect, is an improvement over the old model with regards to the understanding of the requirement as well as the assessment of contractors’ proposals.
AFRIKAANSE OPSOMMING: Die keuse van ‘n kontrakteur is een van die moeilikste besluite wat ‘n kliënt moet neem, dit is egter ook een van die belangrikste besluite wat geneem word. Ten einde die mees geskikte kontrakteur te kies, moet daar ‘n waarde geheg word aan verskeie faktore, menigmaal teenstrydig, wat kontrakteur seleksie klassifiseer as ‘n probleem wat deur middel van meervoudige-kriteria-besluitnemingsmetodes opgelos kan word. Die handeling van besluitneming is nooit ‘n maklike een en vereis deeglike kennis van die behoefte, die alternatiewe, asook die model wat gebruik word om die alternatiewe in terme van die behoefte te waardeer in orde om vertroue in die gekose alternatief te hê. Vir die doeleindes van hierdie studie is die drie kategorieë van meervoudige-kriteria-besluitnemingsmetodes vergelyk in terme van hul toepaslikheid op die voorafgenoemde probleem binne ‘n Semi-Staatsinstelling, naamlik Krygkor, met die oogmerk om die beste metode te identifiseer. Slegs die metodes vervat in die waarde-meting kategorie is geskik binne die Wet op die Raamwerk vir Voorkeurverkrygingsbeleid wat die evaluasie van ‘n aanbod uitdruk as ‘n unieke numeriese funksie. Uit die studie blyk dit dat die vorige kontrakteur seleksie model van direkte punt allokasie op ‘n kwalitatiewe skaal onvanpas is, veral in terme van die sommerings-nutfunksie aanname van enkel dimensionele eenhede. Die model wat eerder aanbeveel word, maak gebruik van die geweegde-produk-model wat nie beperk word deur die bogenoemde aanname nie, aangesien dit dimensielose analise tot gevolg het. Nutfunksies wat geassosieër word met kwantitatiewe kriteria, word voorgestel deur kurwes wat tot die mag van die vertrouensvlak-veranderlike gehef word. Die rekenkundige gemiddelde van hierdie veranderlike verteenwoordig die groep se vertrouensvlak met betrekking tot elke kontrakteur se akkuraatheid en vermoeë om die gespesifiseerde vlak van werkverrigting te handhaaf. Die kwalitatiewe kriteria word beoordeel deur gebruik te maak van die analitiese hiërargie proses. Die gevolgtrekking wat uiteindelik gemaak word is dat die nuwe model, alhoewel nie foutloos, tog ‘n verbetering is op die vorige model, veral met betrekking tot die insig wat verkry word deur die ontleding van die kontrakteurs se voorstelle in terme van die bepaalde behoefte wat bevredig moet word, ten einde die beste keuse uit te oefen.
45
Siddique, Juned. "Multiple imputation using an iterative hot-deck with distance-based donor selection". Diss., Restricted to subscribing institutions, 2005. http://proquest.umi.com/pqdweb?did=990278551&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.
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Tang, Kuan-Chieh y 湯寬傑. "Multiple Supplier Selections Based on Yield and Costs". Thesis, 2010. http://ndltd.ncl.edu.tw/handle/62058592952763410954.
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碩士元智大學
工業工程與管理學系
99
A manufacturer tends to purchase raw materials from the same supplier if the quality remains stable. Suppose that the production yield rate decreases due to the low quality of raw materials. The manufacturer will initiate a project to look for new suppliers. If a manufacturer plans to reduce material costs, the company may consider replacing materials. When the supplier cannot fulfill demand, the manufacturer will search for other suppliers. Otherwise, the due date will be delayed due to lacking of raw materials. These are common problems under a signal or multiple suppliers. Thus, supplier selection under the consideration of costs and quality is an important issue. Counting the number of defectives is inefficient in evaluating suppliers, especially when yield rate is high. Therefore, this research tests the difference between two yields from any pair of suppliers by using Spk index and Dunn-Sidak based method. The impact of cost will also be taken into account during the analysis. The goal is to identify the best suppliers in terms of quality and price. If a manufacture can select two or more best suppliers, the company not only can have stable supply, but also can have chances to negotiate price in the future. Finally, this thesis investigates a case study in passive device and applies the proposed method to find the best suppliers.
47
張朝森. "A Novel MEMS-based External-cavity Tunable Laser Syatem with Multiple Wavelength Selections". Thesis, 2003. http://ndltd.ncl.edu.tw/handle/45889435060745231936.
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碩士國立臺灣大學
應用力學研究所
91
With the rapid growth of digital contents and network usage, many active and passive optical components in fiber-optic communiaction have been demanded accordingly. Among those in applications is the tunable laser of cost-effective modules that plays an important role as a replacement of spare active diodes for networking reliability and installment cost efficiency. An external-cavity tuning approach for tunable lasers is chosen for its commonly known advantages such as widely tuning range, narrow channel spacing, ease of control and wavelength stability. With insertion of MEMS tecnology, a new MEMS-based external-cavity tunable laser system was successfully constructed by an integration of an innovative optical MEMS device, regular passive optical componens and semiconductor laser diode. The external-cavity tunable laser diode employs a grating-based Litmann configuration, which uses its wavelength dispersion in effective -1st mode reflection. With its charateristics of wavelength dispersion in free space, the novel micro corner mirror array was made in place within the dispersive range for wavelength selection and control. The micro corner mirrors was made capable of being individually addressing in accordance with mutiple uses of laser tuning. The array is constituted by three elements: a vertical mirror, a movable in-plane mirror, and a bottom electrode. All of those components are fabricated by bulk micromachining. For each corner mirror, the reflective ligh can be reversely back to its incoming pathway in no regard with its incident angle; the lightpath is altered while the actuated in-plane mirror is tilted. In this configuration of the miniaturized tunable laser diode, one key concern in optical characteristics to successful demonstration with unqiue performance is verticality of the corner mirror. Special care has been taken in this thesis. Although the {111} crystal plane of Si (110) wafers exhibits excellent verticality in anisotropic etch, the assembly between the vertical plane and the in-plane mirror demonstrate slight deviation practically out of verticality. The correction was made by inventing an array of micro cushions onto the in-plane mirrors to achieve virtual right angle. In process of lithography and associated delicate curing, the BCB polymer was used for mechanical step-up pads. The deviation can be reduced down to be within 0.015o, thus achieving 78.1 % of high reflective light efficiency. Furthermore, by using the addressable corner mirror array, the output performance of the miniaturized external cavity tunable laser system achieved the channel spacing of 4.773 nm with respect to each corner mirror as well as the narrowest of 1.075 nm in slightly moving the micro-corner mirror within the dispersive range. With the demonstration of single or multiple lasing wavelengths of selection and control, the innovative miniaturized tunable laser system has been proved for its high potetial applications in fiber-optic communication, dual-wavelength interferometry and measurement.
48
Cheng, Chun-Hua y 鄭淳樺. "A Study of Applying Multiple Criteria Decision Making and Satellite Imaging to Site Selections of Pollution Reduction for Reservoirs". Thesis, 2005. http://ndltd.ncl.edu.tw/handle/57179095499859491383.
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碩士逢甲大學
環境工程與科學所
93
To fully make use of the water resources, the Central Government on Taiwan has designed and managed most of the reservoirs as multi-purpose projects to include flood control, irrigation, water supply, hydro power, recreation, and fishery. These objectives have direct impacts on water quality of reservoirs. Water quality of a reservoir is affected by the pollution from point sources (human activities- sewage and industrial waste), non-point sources (overflow and watershed flows into the reservoir), and pollution released within the reservoir itself. It is imperative to improve and maintain water quality of reservoirs in Taiwan with limited resources and funding. The model developed in this research makes use of grey relational analysis and multiple criteria decision making (MCDM) for prioritizing reservoir management strategies. The study also uses spatial distribution of chlorophyll-a in IKONOS image to identify contamina- tion zones. The research selects Sun Moon Lake, a multi-purpose reservoir, to demonstrate model concept and its feasibility. The results of the Sun Moon Lake application show that first selection is the lake area near Sheng-A: Camping Ground; next come LaLu Island, water supply withdrawal site, and lake area near Der Hua Sher. It also can serve as guidance for the management of other reservoirs in Taiwan and can provide information for the local tourist bureaus and the Environmental Protection Administration in promulgating future water quality standards for reservoirs.
49
Liu, Wei-ting y 劉威廷. "Primer Set Selection in Multiple PCR Experiments". Thesis, 2004. http://ndltd.ncl.edu.tw/handle/77513637600821072522.
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碩士國立中山大學
資訊工程學系研究所
92
Multiple polymerase chain reaction (multiple PCR) is one of the most important techniques in molecular biology. The selection of a suitable set of primers is very important for multiple PCR experiments. The primer selection problem is to minimize the number of primers required to amplify a set of DNA sequences. If the minimum set can be used to amplify the entire target DNA sequences, the experimental costs and time will be reduced. But the primer selection problem was proved to be an NP-complete problem. In this thesis, we develop an efficient heuristic algorithm for selecting a set of primer candidates, each may be able to amplify more than one target sequence. Those primers are called universal primers. The universal primer finding can be viewed as the local motif finding in our method. We modify the score function of the original Gibbs sampler method to find local motifs. The new score function is added a new parameter, weight parameter. The weight parameter can guide the Gibbs sampler method to find local motifs with the local view. Then, the complementary sequences of those local motifs are input into the binary integer programming. Thus we can reduce the size of the solution space. We also test our method on some artificial domains and two gene families. All the results show that we get some improvements on the problem.
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Shen, Chen-Feng y 沈辰峯. "Non-Orthogonal Multiple Access with Resource Selection". Thesis, 2016. http://ndltd.ncl.edu.tw/handle/99544080079165318878.
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碩士國立臺灣海洋大學
通訊與導航工程學系
104
Because of the increasing demand of the transmission data rate for a wireless access service, the existing spectrum allocation can not satisfy the need for future of communications applications. Hence, NTT Docomo proposes a Non-orthogonal multiple access (NOMA) white paper[7] in 2014 for 5G system. Long Term Evolution (LTE) systems adopt the orthogonal frequency division multiple access(OFDMA). In OFDMA, users can select channels with better conditions for transmission. OFDMA is widely adopted for the current broadband wireless networks, due to the scaliability and the Hexibility. The thesis discusses the features of NOMA system and compares to the existing OFDM system. From the basic of non-orthogonal multiple access, the issues of the power allocation and the performance of higher modulation are discussed. This thesis proposeds the usage of the precoding matrix in NOMA system and the related precoding matrix selection methods. With the usage of the proposed PMI selections and resourse allocation schemes, the computation complexity can be reduced up to 95% compared with the conventional method.