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An Enhancement of Existing RF Data Links Using Advanced Diversity TechniquesMelicher, Milos 10 1900 (has links)
ITC/USA 2010 Conference Proceedings / The Forty-Sixth Annual International Telemetering Conference and Technical Exhibition / October 25-28, 2010 / Town and Country Resort & Convention Center, San Diego, California / The theoretical capacity of communication channel in the presence of additive white Gaussian noise (AWGN) as defined by Shannon's channel capacity theorem has been well understood since 1940s. This theorem bounds the bit error rate (BER) of RF data links achievable for a particular noise level. The development in digital technology over the last decade has made it possible not just to design devices that operate close to the Shannon's limit, but also to explore techniques, such as best source and best data selectors, for further improvements in performance of RF data links where frequency, spatial or polar diverse reception is possible. This paper discusses an approach to improving quality of data links using an advanced diversity technique that does not select one source at a time but aligns and combines soft values from each. It shows how the overall bit error rate of RF data link can be improved by combining signals from multiple receivers and/or transmitters. Test results showing practical performance improvements are presented and discussed.
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Assessment of cardiac autonomic neuropathy (CAN) in Type I diabetic miceYang, Bufan 06 November 2011 (has links)
"Diabetic cardiovascular autonomic neuropathy (DCAN) is common in patients with diabetes mellitus, and causes abnormalities in heart rate control as well as central and peripheral nervous system dynamics. A good understanding of DCAN is not established yet. An effective way to detect diabetes mellitus at an early stage is still undiscovered, which method is highly desired by researchers and patients. One reason why the pathogenesis of DCAN is unclear is that non- invasive assessment of DCAN in humans and animals has been problematic. The non-stationary and non- linear natures of the interested physiological signals have placed great limitation on traditionally algorithms. To overcome this limitation, this work proposes a series of time- varying, nonlinear and non-invasive methods to assess cardiac autonomic dysregulation from ECG and PPG records. Including a non-stationary method called PDM, which is based on principal dynamic mode (PDM) analysis of heart rate variability (HRV), nonstationary power spectral density called TVOPS-VFCDM and also standard spectrum analysis method of HRV. We are also able to study and analyze a series of long term and short term ECG and PPG data. In a pilot study, ECG was measured via telemetry in conscious 4 month old C57/Bl6 controls and in Akita mice, a model of insulin- dependent type I diabetes, while PPG was measured via tail pulse oximetry system from 2 month old to 4 month old. The results indicate significant cardiac autonomic impairment in the diabetic mice in comparison to the controls at 4 month old and such impairment start to present at 3 month old. Further, both immunohistochemistry and Western blot analyses show a reduction in nerve density in Akita mice as compared to the control mice, thus, corroborating our data analysis records."
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Digital Tools for Product Development and Organizational ManagementHABIB, MD.AHASHAN, SULTAN LIPOL, LEFAYET January 2010 (has links)
The report illustrates about the digital tools those are used for product development and organizational management (apparel sector). We went to Lectra Sweden AB, DTS solutions AB to search our planned information about those tools. We got some additional information from them as well. We were interested to learn about much software for this but we studied about Lectra Fashion PLM, PISA PDM, and ERP Garp system (CRM, SRM, MRM) as we could manage opportunity to know about them only.For Lectra, we focused on general idea about this software, its different divisions, its working procedure, its advantage to use, its possibility to use for every company. On the other hand, we concentrated on almost similar way of Lectra for PDM, PLM, ERP (CRM, SRM, and MRM).We got different divisions of Lectra, namely- Kaledo, Modaris, Diamino, Optiplan are using for various purposes, like - design, pattern making, marker making, spreading and cutting. On the opposite side of the coin, if companies implement PDM, PLM and ERP system, they can assist to manage the whole business chain very easily for instance- product development, order, purchase, manufacturing, stock/distribution, economy, logistics etcetera. We also knew that it is expensive to buy those software’s and require special skill to operate so it is not prolific to all company. / Program: Magisterutbildning i Applied Textile Management
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The Influence of Participation in Decision-Making within the Enterprise Bargaining Context: Implications for Job Satisfaction and Affective CommitmentScott-Ladd, Brenda D. January 2001 (has links)
This thesis explores the role and relationships of employee participation in decision-making (PDM) within the enterprise bargaining context. The advent of the enterprise bargaining to facilitate labour market restructuring has led to dramatic changes within Australian industrial relations, supposedly offering employees the opportunity to participate in changes to work practices, conditions of employment and rewards in return for employer gains in productivity (Niland, 1993). Productivity improvements have been achieved, but some researchers claim this has been at employees expense and that job satisfaction and affective commitment are declining as working hours increase, work intensifies, and job security diminishes. Employee PDM influencing more positive outcomes, such as improved productivity, satisfaction and commitment is appealing, but largely untested.Research data was gathered from the public, private and local government sectors to form two separate studies to test a model of PDM developed from the literature. The first Study analysed cross-sectional data to test the influence of PDM in relation to working conditions, work practices and rewards and outcomes of job satisfaction and affective commitment, while the second Study examined these relationships on an independent longitudinal matched sample. Analysis was conducted using Structural Equation Modelling with the EQS statistical package.Findings from both studies supported that higher levels of PDM correlate with higher levels of job satisfaction and affective commitment and Autonomy is the only significant mediator in the relationship PDM and affective commitment. Employees also perceived that increased task variety correlated with higher levels of PDM. Lower levels of PDM correlated with lower autonomy and perceptions of performance effectiveness. Although positive attitudes to PDM positively influence ++ / satisfaction and affective commitment outcomes, lowered perceived performance effectiveness and rewards compromise the gains achieved. These findings support the crucial role of employee participation in decision-making and sound a warning to practitioners in that increased demands for performance should not extend to role overload that reduces effectiveness, and must be matched with equitable rewards.
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Information- och kommunikationsteknik : Implementering av dokumenthanteringssystem hos en mindre entreprenadAronsson, Alexander January 2009 (has links)
<p>Idag produceras, utväxlas och lagras fler och fler dokument elektroniskt i samma takt som ledtiderna blir kortare och kortare. Detta ställer högre krav på hur den stora mängd dokument som strömmar genom ett projekt ska hanteras; dels för att datorn som hjälpmedel inte ska väljas bort på grund av dålig struktur, säkerhet och användarvänlighet och dels för att inblandade aktörer skall ha möjlighet till rätt information vid rätt tillfälle.</p><p>Denna rapport ger grundläggande kunskaper om vilka system som finns för lagring och utväxling av information, vilka filformat för utväxling av information det förekommer inom byggbranschen samt ett exempel på ett eget utvecklat dokumenthanteringssystem enligt de krav som ställs.</p><p>De system som redogörs i rapporten är Electronic Document Management tillsammans med projektnätverk, Product Document Management, Product Life Cycle Management och Byggnads Informations Modell.</p><p>Slutligen redovisas exemplet vilket är ett projektverktyg utvecklat i programmet Microsoft Sharepoint.</p>
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Information- och kommunikationsteknik : Implementering av dokumenthanteringssystem hos en mindre entreprenadAronsson, Alexander January 2009 (has links)
Idag produceras, utväxlas och lagras fler och fler dokument elektroniskt i samma takt som ledtiderna blir kortare och kortare. Detta ställer högre krav på hur den stora mängd dokument som strömmar genom ett projekt ska hanteras; dels för att datorn som hjälpmedel inte ska väljas bort på grund av dålig struktur, säkerhet och användarvänlighet och dels för att inblandade aktörer skall ha möjlighet till rätt information vid rätt tillfälle. Denna rapport ger grundläggande kunskaper om vilka system som finns för lagring och utväxling av information, vilka filformat för utväxling av information det förekommer inom byggbranschen samt ett exempel på ett eget utvecklat dokumenthanteringssystem enligt de krav som ställs. De system som redogörs i rapporten är Electronic Document Management tillsammans med projektnätverk, Product Document Management, Product Life Cycle Management och Byggnads Informations Modell. Slutligen redovisas exemplet vilket är ett projektverktyg utvecklat i programmet Microsoft Sharepoint.
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Kartläggning av tvärfunktionella verksamhetsbehov för framtida utveckling av OAS / Mapping of cross-functional user needs for future development of OASEriksson, Martin, Lindgren, Mikael January 2012 (has links)
The management of information is one of the key aspects within a successful andefficient product development process, particularly regarding complex products.Scania CV AB is at the moment developing a new IT-system, OAS, which aims tomanage the company’s product data. With this as a background, the purpose of thismaster thesis is to identify the cross-functional user needs within Scania’s organizationconcerning product data and the management around it. To fulfill the purpose, an empirical study consisting of 40 personal interviews with 50representatives from different functions within Scania’s organization was carriedthrough. The empirical data was then analyzed focusing on identifying thecross-functional needs and issues. The study points out that there is a big potential regarding improvement among themanagement of product data. For example, a lot of time is spent by the users to findthe requested information and to copy data manually from one IT-system to another.The most important findings, in terms of cross-functional user needs within Scania’sorganization, are the integration of Scania’s many IT-system and to make informationmore accessible. Further needs are regarding the ability to follow a product’s entirelifecycle, better support for the user’s understanding of the complex product, anenhanced management of Engineering Change Orders and a better supportconcerning the product structure.
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Les contributions de Freud et Lacan à la théorie des structures cliniques. Des fondements généalogiques aux débats en psychopathologie / The contributions of Freud and Lacan to the theory of clinical structures. From the genealogical fondations to the debates in psychopathologySierra Rubio, Miguel Angel 30 September 2016 (has links)
Le concept de structure clinique se réfère immédiatement à la classification d’une maladie mentale comme névrose, psychose ou perversion, mais aussi au sous-type nosographique la concernant. Actuellement, les développements de ce concept constituent la principale théorie psychopathologique de l’analyse lacanienne. Toutefois, il y a une disparité de jugement sur sa valeur : (1) quelques auteurs soutiennent une continuité naturelle entre cette théorie et la doctrine de Freud et Lacan ; (2) quelques autres proposent une réorganisation de la nosographie psychanalytique incluant des nouvelles pathologies ; (3) quelques autres, finalement, défendent la disparition complète de ces références théoriques dans la clinique.Cette disparité relève d’une lacune dans le savoir : les fondements des structures cliniques, ainsi que ses enjeux, n’ont pas été encore systématisés. L’objetctif général de ce travail fut de les restituer, afin de déterminer la légitimité de cette théorie en tant qu’interprétation de la pensée de Freud et Lacan, ainsi que sa pertinence dans les débats psychopathologiques actuels.Pour éclairer les filiations symboliques qui soutiennent le concept de structure clinique, une méthode généalogique a été employée. Les résultats démontrent que Freud a utilisé une notion de structure héritée de la science du XIX e siècle pour élaborer ses conceptions psychanalytiques. La référence minéralogique, fournie par son ancien professeur G. Tschermak, a notamment imprégné l’usage freudien de la structure en psychopathologie. Bien que les catégories de névrose, psychose et perversion n’arrivent pas chez lui à se constituer comme un triptyque, il y a dans ses textes une tendance à les considérer dans leurs rapports mutuels, en tant que perturbations de la vie sexuelle. Cette tendance a été récupérée par Lacan à partir de 1953, et déclinée sur son concept de structure – entendue alors comme un ensemble covariant de signifiants – et sur les registres du réel, du symbolique et de l’imaginaire. Les avancées de sa production intellectuelle, telles que l’invention de l’objet petit a et l’introduction des nœuds et des tresses en psychanalyse, auront apporté jusqu’à la fin de ses jours un approfondissement du triptyque freudien.La systématisation de la théorie des structures cliniques a proprement commencée en 1981, quand les membres du Champ freudien ont soudé cet ensemble d’éléments psychopathologiques avec le terme, homonyme et préexistant, de structure clinique. L’enjeu majeur de cette soudure a été de supporter la relation dialectique entre la théorie et la pratique analytique. À présent, le programme de recherche des structures cliniques porte sur les psychoses ordinaires et sur la spécificité de l’autisme. La psychopathologie lacanienne ainsi constitué est interrogée depuis nombreux angles : la proposition d’une structure psychosomatique, la promotion des pathologies borderline, la liquidation post-moderne de la structure perverse, la contrainte des nosographies opérationnalisées (CIM, DSM et PDM). Les conclusions de cette recherche qualifient la théorie des structures cliniques comme une interprétation légitime de la pensée de Freud et de Lacan. Elle est d’autant plus pertinente dans le contexte actuel qu’elle est d’une grande utilité pour l’établissement du diagnostic structural, pour la direction de la cure et pour la transmission du cas clinique. En tant que cartographie du malaise subjectif, la structure clinique signale la référence éthique du psychopathologique, et constitue une résistance et une subversion face à la défaillance contemporaine dans l’appréhension du réel clinique. / The concept of Clinical Structure concerns the classification of a mental disease as neurosis, psychosis or perversion, and its corresponding nosographic sub-type as well. Nowadays, the developments of this concept constitute the main psycho-pathological theory brought about by lacanian psychoanalysis. However, there is a disparity of judgment regarding its value: (1) some authors assert the natural continuity between that theory and the doctrine of Freud and Lacan; (2) some others propose a reorganization of psychoanalytic nosography which includes new pathologies; (3) some others finally advocate a complete disappearance of these theoretical references from clinical studies. This disparity takes on a lack of knowledge: the clinical structures’ foundations, and its stakes, have not yet been systematized. The main objective of this work was to restore them, in order to determine the legitimacy of this theory as an interpretation of Freud’s and Lacan’s thinking, and its appropriateness in contemporary psycho-pathological debates.For clarifying the symbolic filiations that support the concept, a genealogical method has been employed. The results demonstrate that Freud has used a notion of structure inherited from 19th century science to elaborate his psychoanalytical conceptions. The mineralogical reference, provided by his ancient Professor G. Tschermak, has notably permeated the freudien use of the structure in psychopathology. Although he did not constitute the categories of neurosis, psychosis and perversion as a triptych, there is in his textes a tendancy to consider them on their mutual connections, as disturbances of sexual life. This tendancy has been recovered by Lacan since 1953, and declined on his concept of structure (then understood as a co-variant set of signifiers) and on the registers of real, symbolic and imaginary. The advances of his intellectual production, like the invention of the Object petit a and the introduction of knots and braids in psychoanalysis, have brought until the end of his days a deepening of the freudien triptych.Systematization of the theory of clinical structures has properly started in 1981, when the members of the Freudien Field have welded this set of psycho-pathological items to the term, namesake and pre-existing, of clinical structure. The major stake of this welding has been to support the dialectical relationship between the psychoanalytic theory and the practice.Nowadays, the in-depth study of clinical structures is focused on the ordinary psychosis and the specificity of autism. The Lacanian psychopathology thus constituted is questioned from many angles: the proposition of a psychosomatic structure, the promotion of borderline pathology, the Postmodern liquidation of the perverse structure, the constraint of operationalized nosographies (ICD, DSM and PDM).In conclusion, this research confirms the theory of clinical structures as a legitimate interpretation of Freud’s and Lacan’s thinking. It is even more relevant in contemporary context that it has an important utility in order to the establishment of structural diagnose, to the direction of the cure and to the transmission of cases. As a cartography of subjective discomfort, the clinical structure points to the ethical reference of the psycho-pathological, and constitutes a resistance and a subversion facing the contemporary failure in the apprehension of clinical real.
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A novel approach to computer-aided configuration design based on constraint satisfaction paradigmLi, Jingxin 28 February 2005
The trend in todays manufacturing industry is changing from mass production to mass customization. The companies which win the markets are those which can deliver highly customized products at the fastest rate and allow for life-cycle participation of customers regardless of where they are and when they participate. One of the strategies for implementing the mass customization paradigm is to implement the product development according to the assemble-to-order (ATO) pattern. Under the ATO pattern, the design of a product becomes the determination of a configuration which contains a set of pre-developed components configuration design for short. The configuration design problem can be well treated as a constraint satisfaction problem (CSP). The mature methods are available for CSP, but there are several limitations with CSP for configuration design.
This thesis proposes a novel approach to configuration design. This approach is based on a CSP but adds a wrapper (product data model, PDM for short) over the CSP model. Consequently, both the customer and the other life cycle development programs only communicate with the PDM, and a more intelligent and user-friendly computer system for configuration design can then be implemented. Both the conceptual design and implementation of such a wrapper are discussed in this thesis. A computer prototype system for elevator design is developed for demonstrating the effectiveness of this approach.
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A novel approach to computer-aided configuration design based on constraint satisfaction paradigmLi, Jingxin 28 February 2005 (has links)
The trend in todays manufacturing industry is changing from mass production to mass customization. The companies which win the markets are those which can deliver highly customized products at the fastest rate and allow for life-cycle participation of customers regardless of where they are and when they participate. One of the strategies for implementing the mass customization paradigm is to implement the product development according to the assemble-to-order (ATO) pattern. Under the ATO pattern, the design of a product becomes the determination of a configuration which contains a set of pre-developed components configuration design for short. The configuration design problem can be well treated as a constraint satisfaction problem (CSP). The mature methods are available for CSP, but there are several limitations with CSP for configuration design.
This thesis proposes a novel approach to configuration design. This approach is based on a CSP but adds a wrapper (product data model, PDM for short) over the CSP model. Consequently, both the customer and the other life cycle development programs only communicate with the PDM, and a more intelligent and user-friendly computer system for configuration design can then be implemented. Both the conceptual design and implementation of such a wrapper are discussed in this thesis. A computer prototype system for elevator design is developed for demonstrating the effectiveness of this approach.
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