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Exploring the Black White Achievement Gap: The Connection Between Upward Bound, Oppositional Culture, and the Multicultural Navigator ConceptHardy, Mia B 20 December 2012 (has links)
Racial equality in the United States educational system has long been and continues to be a source of debate. Specifically, the disparities between whites and other minority groups have been increasingly more critical. Blacks and Latinos consistently score lower than whites on standardized tests and academic course work. There have been several explanations given for poorer school performance by certain minority groups than whites. In this dissertation, I explore the black white achievement gap through the examination of one widely known explanation, oppositional culture theory. This research investigates the major tenets of oppositional culture theory and the contemporary multicultural navigator concept. Using a grounded theory method of analysis, I examine the connections between suppositions of the theory and black students in the Upward Bound academic achievement program.
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Revision af integrerede økonomistyringsapplikationer i PC-miljø /Andersen, Claus. Sundgaard Nielsen, Frank. January 1998 (has links)
Cand.merc.aud.-kandidatafhandling fra Handelshøjskolen i København 1996. Præmieret med Danica-prisen.
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Providing a Culturally Sensitive Approach to Support Indigenous Cancer Patients and Their Families: A Nurse Navigator’s ExperienceAbdul-Fatah, Tara 09 December 2019 (has links)
Cancer among Indigenous Peoples (First Nations, Inuit, and Métis) is disproportionately higher than the overall Canadian population. Many Indigenous Peoples have difficulty accessing care and do not receive culturally safe care due to a longstanding history of marginalization and colonization. The role of a nurse navigator (NN) was developed to improve continuity of care and overall health outcomes for Indigenous Peoples; however, limited research exists on what a NN does or how they are perceived. Using constructivist case study methodology, this thesis explored the experiences of a NN working in a large tertiary care hospital in Ontario, Canada, and the processes the NN used to support Indigenous cancer patients in a culturally safe manner. Six in-depth semi-structured interviews were performed with health care providers and managers, and shadowing of a NN occurred over two weeks allowing direct observations of the NN that was captured in field notes and reflective journaling. Interviews were audiotaped and transcribed; all data was entered into NVIVO 12 qualitative software and coded thematically. Analysis revealed the NN to be an important complement to clinical care and key resource to navigating the health care system, providing mechanisms for building trust, and raising awareness of Indigenous historical and cultural contexts. The NN practiced non-conventional, patient-centered approaches that included engaging with the land and arts, interpreting healthcare information, advocating for and aiding autonomy over healthcare. All participants felt the NN had a positive influence on health and wellbeing. Thesis results inform healthcare delivery and nursing practice to improve quality of care and outcomes for Indigenous cancer patients.
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Extraction de sources d'électromyogrammes et évaluation des tensions musculaires / Electromyographical source extraction and estimation of muscular tensionLeouffre, Marc 11 April 2014 (has links)
L'évaluation des tensions musculaires chez l'Homme dans les sciences du mouvement et les études posturales présente un grand intérêt pour le sport, la santé ou encore l'ergonomie. La biomécanique s'intéresse tout particulièrement à ces problèmes utilise la cinématique inverse pour recalculer, à partir de mesures physiques externes, les tensions musculaires internes. Le verrou scientifique principal de cette technique est la redondance musculaire, propre au vivant. En effet les actionneurs (muscles) sont plus nombreux que les degrés de liberté à contrôler. Les problèmes de cinématique inverse sont sous-déterminés, ils présentent plus d'inconnues que d'équations, et nécessitent l'usage de procédures d'optimisation. Dans ce contexte l'usage de l'électromyographie (EMG), signal électro-physiologique mesurable à la surface de la peau et témoin de l'activité musculaire, peut donner une idée de l'activité des muscles sous-jacents. La connaissance de l'activité des muscles permettrait d'introduire de l'information supplémentaire dans cette méthodologie inverse afin d'améliorer l'estimation des tensions musculaires réelles au cours de mouvements ou dans une posture donnée. De plus certaines applications ne permettent pas ou peu l'enregistrement de forces ou positions articulaires externes qui nécessitent un appareillage conséquent et rendent difficile l'étude de situations de la vie courante. L'électromyographie est dans un tel contexte une mesure non-invasive et peu encombrante, facilement réalisable. Elle a cependant elle aussi ses propres verrous scientifiques. L'EMG de surface sur de petits muscles très rapprochés comme les nombreux muscles des avant-bras peut être sujette à ce qui est communément appelé « cross-talk » ; la contamination croisée des voies. Ce cross-talk est le résultat de la propagation des signaux musculaires sur plusieurs voies simultanément, si bien qu'il est compliqué d'associer l'activité d'un muscle à une unique voie EMG. Le traitement numérique du signal dispose d'outils permettant, dans certaines conditions, de retrouver des sources inconnues mélangées sur plusieurs capteurs. Ainsi la séparation de sources peut être utilisée sur des signaux EMG afin de retrouver de meilleures estimations des signaux sources reflétant plus fidèlement l'activité de muscles sans l'effet du cross-talk. Ce travail de thèse montre dans un premier temps l'intérêt de l'EMG dans l'étude de l'utilisation d'un prototype d'interface homme-machine novateur. L'EMG permet en particulier de mettre en évidence la présence forte de cocontraction musculaire permettant de stabiliser les articulations pour permettre un contrôle précis du dispositif. En outre des perspectives d'analyse plus fines seraient envisageables en utilisant des techniques de séparation de sources performantes en électromyographie. Dans un second temps l'accent est mis sur l'étude des conditions expérimentales précises permettant l'utilisation des techniques de séparation de sources en contexte linéaire instantané en électromyographie de surface. L'hypothèse d'instantanéité du mélange des sources en particulier est étudiée et sa validité est vérifiée sur des signaux réels. Enfin une solution d'amélioration de la robustesse de la séparation de sources à l'hypothèse de l'instantanéité est proposée. Celle-ci repose sur la factorisation en matrices non-négatives (NMF) des enveloppes des signaux EMG. / Evaluation of muscle tensions in movement and gait sciences is of great interest in the fields of sports, health or ergonomics. Biomechanics in particular has been looking forward to solving these problems and developed the use of inverse kinematics to compute internal muscle tensions from external physical measures. Muscular redundancy remains however a complex issue, there are more muscles than degrees of freedom and thus more unknown variables which makes inverse kinematics an under-determined problem needing optimization techniques to be solved. In this context using electromyography (EMG), an electro-physiological signal that can be measured on the skin surface, gives an idea of underlying muscle activities. Knowing muscle activities could be additional information to feed the optimization procedures with and could help improving accuracy of estimated muscle tensions during real gestures or gait situation. There are even situations in which measuring external physical variables like forces, positions or accelerations is not feasible because it might require equipment incompatible with the object of the study. It is often the case in ergonomics when equipping the object of the study with sensors is either too expensive or physically too cumbersome. In such cases EMG can become very handy as a non-invasive measure that does not require the environment to be equipped with other sensors. EMG however has its own limits, surface EMG on small and closely located muscles like muscles of the forearm can be subject to “cross-talk”. Cross-talk is the cross contamination of several sensors it is the result of signal propagation of more than one muscle on one sensor. In presence of cross-talk it is not possible to associate an EMG sensor with a given muscle. There are signal processing techniques dealing with this kind of problem. Source separation techniques allow estimation of unknown sources from several sensors recording mixtures of these sources. Applying source separation techniques on EMG can provide EMG source estimations reflecting individual muscle activities without the effect of cross-talk. First the benefits of using surface EMG during an ergonomics study of an innovative human-computer interface are shown. EMG pointed out a relatively high level of muscle co-contraction that can be explained by the need to stabilize the joints for a more accurate control of the device. It seems legitimate to think that using source separation techniques would provide signals that better represent single muscle activities and these would improve the quality of this study. Then the precise experimental conditions for linear instantaneous source separation techniques to work are studied. Validity of the instantaneity hypothesis in particular is tested on real surface EMG signals and its strong dependency on relative sensor locations is shown. Finally a method to improve robustness of linear instantaneous source separation versus instantaneity hypothesis is proposed. This method relies on non-negative matrix factorization of EMG signal envelopes.
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High Level VHDL Modeling of a Low-Power ASIC for a Tour GuideKailasam, Umadevi 29 March 2004 (has links)
We present the high level (VHDL) modeling and high level synthesis of an ASIC (TOUR NAVIGATOR) for a portable hand held device - a tour guide. The tour guide is based on location-aware mobile computing, which gives the information of the current location to the user. The TOUR NAVIGATOR designed in this work is interfaced with off-the-shelf components to realise the tour guide system. The current location is given by an on-board GPS receiver chip. The TOUR NAVIGATOR is a search and play module which interfaces with the flash memory, GPS receiver and the audio codec.
The functionality of the TOUR NAVIGATOR is to search the flash memory for audio data corresponding to the current GPS co-ordinate, which is an input to the TOUR NAVIGATOR. The look-up table containing the GPS coordinates and the corresponding audio files are loaded into the flash memory, where in each GPS entry in the table is indexed by the co-ordinates, and an audio file that contains information about the locations is associated with it. When there is a match, the audio file is streamed to the codec. The functionality of the interface of the TOUR NAVIGATOR with the memory module is verified at the RTL using Cadence-NCLaunch. The layout implementation of the TOUR NAVIGATOR is done using an automatic place and route tool (Silicon Ensemble), which uses standard cells for the entire design. Leakage power reduction is done by introducing sleep transistors in the standard cells. The TOUR NAVIGATOR is put into a "sleep" mode when there is no operation of the tour guide, thus giving significant power savings.
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Företagens presentation av intellektuellt kapital : nu och dåKällman, Jennie, Arvidsson, Micaela January 2008 (has links)
<p> </p><p>Redovisningen är anpassad efter den gamla ekonomin och fyller därför inte dagens behov av redovisad information. Istället för att endast redovisa företagets materiella tillgångar behöver bland annat kunskapsföretag presentera osynliga tillgångar vilka utgör en stor del av företagens värde. Detta så kallade intellektuella kapital behöver framhävas i företagens finansiella rapporter för att intressenter ska kunna göra en rättvis bedömning av företaget. Problem uppstår vid värdering och redovisning av intellektuellt kapital eftersom begreppets definition är otydlig och därför uppfattas olika av olika personer. Problem uppstår även eftersom det inte finns några allmänt etablerade principer för hur värderingen och redovisningen ska gå till. Frågan är då hur olika företag har uppfattat begreppet och hur de har valt att presentera detta i sina rapporter. Syftet är att identifiera vilken information företag presenterar om intellektuellt kapital vid tre olika tidpunkter. Studien syftar också till att beskriva på vilket sätt företag valt att framhäva denna information. Resultatet visar att 17 av 32 företag inte har ändrat sin redovisningsteknik under en nioårsperiod. Bland resterande företag har valet av redovisningsteknik förändrats över tid. En skillnad är att de företag som år 1999 presenterade intellektuellt kapital genom en modell, har till år 2007 valt att ändra redovisningsteknik. Detta motiveras med att det antingen blivit för kostsamt för företaget eller att företaget fortfarande arbetar med modellen internt men har valt att inte presentera den i offentliga rapporter. Resultatet visar även att det är främst information om medarbetarna som presenteras i företagens rapporter. Det kan ses både vid jämförelse av företag sinsemellan och inom ett företag över tid. Att medarbetarna får ta störst plats kan bero på att de är grundstenen till de övriga delarna av det intellektuella kapitalet, och företagen vill därför framhäva att de innehar denna tillgång.</p><p> </p>
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Företagens presentation av intellektuellt kapital : nu och dåKällman, Jennie, Arvidsson, Micaela January 2008 (has links)
Redovisningen är anpassad efter den gamla ekonomin och fyller därför inte dagens behov av redovisad information. Istället för att endast redovisa företagets materiella tillgångar behöver bland annat kunskapsföretag presentera osynliga tillgångar vilka utgör en stor del av företagens värde. Detta så kallade intellektuella kapital behöver framhävas i företagens finansiella rapporter för att intressenter ska kunna göra en rättvis bedömning av företaget. Problem uppstår vid värdering och redovisning av intellektuellt kapital eftersom begreppets definition är otydlig och därför uppfattas olika av olika personer. Problem uppstår även eftersom det inte finns några allmänt etablerade principer för hur värderingen och redovisningen ska gå till. Frågan är då hur olika företag har uppfattat begreppet och hur de har valt att presentera detta i sina rapporter. Syftet är att identifiera vilken information företag presenterar om intellektuellt kapital vid tre olika tidpunkter. Studien syftar också till att beskriva på vilket sätt företag valt att framhäva denna information. Resultatet visar att 17 av 32 företag inte har ändrat sin redovisningsteknik under en nioårsperiod. Bland resterande företag har valet av redovisningsteknik förändrats över tid. En skillnad är att de företag som år 1999 presenterade intellektuellt kapital genom en modell, har till år 2007 valt att ändra redovisningsteknik. Detta motiveras med att det antingen blivit för kostsamt för företaget eller att företaget fortfarande arbetar med modellen internt men har valt att inte presentera den i offentliga rapporter. Resultatet visar även att det är främst information om medarbetarna som presenteras i företagens rapporter. Det kan ses både vid jämförelse av företag sinsemellan och inom ett företag över tid. Att medarbetarna får ta störst plats kan bero på att de är grundstenen till de övriga delarna av det intellektuella kapitalet, och företagen vill därför framhäva att de innehar denna tillgång.
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Zwischenbericht im Projektverbund Klimaschutz: Unternehmenssteuerung im klimapolitischen Umfeld (CO2-Navigator)Günther, Edeltraud, Weber, Gabriel, Nowack, Martin, Arndt, Stephanie 17 December 2008 (has links) (PDF)
Die globale Erwärmung und zunehmende klimapolitische Maßnahmen sind für viele Unternehmen mit Risiken aber auch mit Chancen verbunden. Der Lehrstuhl für Betriebliche Umweltökonomie an der TU Dresden und das Institut für Wirtschaftsforschung Halle widmen sich seit Dezember 2006 der Frage, wie Unternehmen mit diesen Herausforderungen umgehen können. Der aktuelle Stand des BMBF Projekts Unternehmenssteuerung im klimapolitischen Umfeld (CO2-Navigator) wird in diesem Bericht dokumentiert.
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Biometric Navigation with UltrasoundSchwartz, Benjamin Matthew 16 April 2013 (has links)
We have designed and demonstrated a new class of medical navigation methods that use the fingerprint-like biometrically distinct ultrasound echo patterns produced by different locations in tissue. As an example of this new biometric navigation approach, we have constructed and tested a system that uses ultrasound data to achieve prospective motion compensation in MRI, especially for respiratory motion during interventional MRI procedures in moving organs such as the liver. The ultrasound measurements are collated with geometrical information from MRI during a training stage to form a mapping table that relates ultrasound measurements to positions. During prospective correction, the system makes frequent ultrasound measurements and uses the map to determine the corresponding position. Results in motorized linear motion phantoms and freely breathing animals indicate that the system performs well. Apparent motion is reduced by up to 97.8%, and motion artifacts are reduced or eliminated in 2D Spoiled Gradient-Echo images. The motion compensation is sufficient to permit MRI thermometry of focused ultrasound heating during respiratory-like motion, with results similar to those obtained in the absence of motion. This new technique may have applications for MRI thermometry and other dynamic imaging in the abdomen during free breathing. We have also extended this technique to situations in which external position information during training is unavailable or incomplete, by extending the concept of Simultaneous Localization and Mapping to include determining the topology of a dense motion path through a gaussian random field. In the course of these investigations, we have also developed modified forms of referenceless MRI thermometry and Kalman filtering, specially adapted to optimize accuracy under our experimental conditions.
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Untersuchungen zur Bewegungskompensation bei MRT-Untersuchungen der LungeSchreiber, Alexandra Kerstin 09 January 2020 (has links)
No description available.
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