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Automatický anténní tuner / Automatic Antenna TunerŠváb, Jaroslav Unknown Date (has links)
This degree work deals with the design and implementation of an automatic antenna tuner for short-wave transmitters. The device works within the short-wave range in (1.5 MHz - 30 MHz) band according to the selection of the given frequency. Its principle is that the tuner has a small range of adapted impedances, but it is usually sufficient for fine tuning of most deviations in the system of antenna 50 - feeder 50 - transceiver outlet 50 . It is also equipped with memories which the settings for the individual bands or frequency segments are stored into. Then the transition from one band to another is quick, easy and, first of all, safe, which is a great advantage. In automatic mode, a SWR limit from which the tuner should start to tune can be set. Interconnection with a TRX is not necessary in a fully automatic mode, the device tunes automatically after keying if the set limit of SWR has been exceeded. The automatic tuning is very quick with this device, if the antenna being tuned is not stored in the memory the tuning lasts ca 0.5 - 6 s, if the tuner uses the memory. It could be said that the work with the tuner is without problems, it is possible to learn to control it in a short time. The tuner is small and light. The result of the whole project is a compact device controlled by the user by means of push buttons.
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Developing a Process to Reach Consumer Insights for TeliaSonera / Utveckling av en process för att nå konsumentinsikter åt TeliaSoneraBERGSTEDT, ISABELL, NILSSON, SOFIE January 2013 (has links)
This thesis was aimed to help TeliaSonera to work more consumer related. The purpose was to show the organization how consumer insights could be found and how valuable they are for the company. The assignment consisted of two parts, to develop a process methodology for TeliaSonera which could be used when a segment analysis is to be made in the future, and to study two specific consumer segments. Main focus was to be put on mobile Internet access.The Insights Process was designed based on literature studies, information from TeliaSonera and the consumer study. The process must help TeliaSonera to generate and verify actionable consumer insights, suit the organization and be possible to complete in one week. Via a current situation analysis and by testing methods to find perceptions and ways of conducting consumer studies, different concepts were generated, based on these a final process was established. The general idea was to utilize both in-house knowledge and consumer know-hows. The process consists of twelve steps, optional minitests and one regular follow-up session. The input should be a caught opportunity and output should be actionable insights. Through in-house studies at TeliaSonera perceptions were generated within the area mobile Internet access. These were later tested in a consumer study through a questioning in Telia stores and focus group sessions with the specific segments. The main trait from the group High Status Homeowners was control. Besides that, they requested simpler handling, they are always online, and they have a need of performance and of integrity. The main request from the group Educated Metropolitans was to simplify their everyday lives. Besides that, they have a need of control, they are cost-conscious and aware and they demand Internet access everywhere. This showed that the perceptions generated from the beginning turned out to be rather true.The process turned out to be an agile tool, which will complement the current work at TeliaSonera. Enhanced with toolbox, documentation-aid and consequence guide for each step, the process is easy to follow. There is software programming that has to be done before the process can be launched / Syftet med examensarbetet var att hjälpa TeliaSonera att arbeta mer konsumentorienterat samt att visa organisationen hur man kan hitta konsumentinskikter och hur värdefulla dessa är för företaget. Uppdraget bestod av två delar, dels att utveckla en process för TeliaSonera att använda när en analys av ett kundsegment ska göras, dels att utföra en konsumentundersökning av specifika segment. Studieområdet för konsumentundersökningen var mobil internetaccess.Konsumentinsiktsprocessen baserades på litteraturstudier, information från TeliaSonera samt konsumentundersökningen som genomfördes. De krav som ställdes på processen var bland annat att den skulle hjälpa TeliaSonera att generera och verifiera användbara konsumentinsikter, vara anpassad med övrigt arbete inom organisationen samt vara möjlig att genomföra på en vecka. Processkoncept togs fram med hjälp av information från nulägesanalyser och metodtester för att identifiera spaningar och genomföra konsumentundersökningar. Processkoncepten utvärderades senare och en slutgiltig konsumentinsiktsprocess utvecklades. Grundidén med processen var att använda sig av både intern kunskap inom organisationen och konsumenternas egna kommentarer och attityder. Processen består av tolv steg, möjliga minitest och en regelbunden uppföljnings-session. Insteget i processen är en uppfångad möjlighet eller idé och utkomsten från processen är användbara konsumentinsikter. Genom interna undersökningar hos TeliaSonera hittades spaningar gällande mobil internetaccess. Dessa testades senare i konsumentundersökningar som frågeformulär i två Teliabutiker samt fyra fokusgruppsessioner med de specifika kundsegmenten. Resultatet från undersökningarna visade att det främsta behovet för segmentet High Status Homeowners var att ha kontroll. Utöver det krävde de även en enkel hantering, ständig uppkoppling, integritet och prestanda. Det främsta behovet för segmentet Educated Metropolitans var att ha ett enkelt vardagsliv. Utöver det har de också ett kontrollbehov, är kostnadsmedvetna, omvärldsmedvetna och kräver att alltid kunna vara uppkopplade mot internet överallt. Detta visar att spaningarna som identifierades internt i början av arbetet stämde överens med verkligheten. Processen utvecklades till ett agilt verktyg som kompletterar TeliaSoneras nuvarande arbete. Tack vare verktygslådor, dokumentationsformulär and konsekvensguider till varje steg är processen lätt att följa och genomföra. Innan processen kan lanseras återstår en del programmeringsarbete.
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Transferability and Calibration of the Highway Safety Manual Performance Functions and Development of New Models for Urban four-lane Divided RoadsAl, Kaaf, Khalid 01 January 2014 (has links)
Many developing countries have witnessed fast and rapid growth in the last two decades due to the high development rate of economic activity in these countries. Many transportation projects have been constructed. In the same time both population growth and vehicle ownership rate increased; resulting in increasing levels of road crashes. Road traffic crashes in Gulf Cooperation Council (GCC) is considered a serious problem that has deep effects on GCC's population as well as on the national productivity through the loss of lives, injuries, property damage and the loss of valuable resources. From a recent statistical study of traffic crashes in Oman, it was found that in 2013 there were 7,829 crashes occurred for a total of 1,082,996 registered vehicles. These crashes have resulted in 913, 5591, and 1481 fatal, injury and property damage only crashes, respectively (Directorate General of Traffic, 2014), which is considered high rates of fatalities and injuries compared to other more developed countries. This illustrates the seriousness and dangerousness of the safety situation in GCC countries and Oman particularly. Thus, there is an urgent need to alleviate the Severity of the traffic safety problem in GCC which in turn will set a prime example for other developing countries that face similar problems. Two main data sources from Riyadh, the capital city of Kingdom of Saudi Arabia (KSA) and Muscat, the capital city of Sultanate of Oman have been obtained, processed, and utilized in this study. The Riyadh collision and traffic data for this study were obtained in the form of crash database and GIS maps from two main sources: the Higher Commission for the Development of Riyadh (HCDR) and Riyadh Traffic Department (RTD). The Muscat collision and traffic data were obtained from two main sources: the Muscat Municipality (MM) and Royal Oman Police, Directorate General of Traffic (DGC). Since the ARC GIS is still not used for traffic crash geocoding in Oman, the crash data used in the analysis were extracted manually from the filing system in the DGC. Due to the fact that not all developing countries highway agencies possess sufficient crash data that enable the development of robust models, this problem gives rise to the interest of transferability of many of the models and tools developed in the US and other developed nations. The Highway Safety Manual (HSM) is a prime and comprehensive resource recently developed in the US that would have substantial impact if researchers are able to transfer its models to other similar environment in GCC. It would save time, effort, and money. The first edition of the HSM provides a number of safety performance functions (SPFs), which can be used to predict collisions on a roadway network. This dissertation examined the Transferability of HSM SPFs and developing new local models for Riyadh and Muscat. In this study, first, calibration of the HSM SPFs for Urban Four-lane divided roadway segments (U4D) with angle parking in Riyadh and the development of new SPFs were examined. The study calibrates the HSM SPFs using HSM default Crash Modification Factors (CMFs), then new local CMFs is proposed using cross-sectional method, which treats the estimation of calibration factors using fatal and injury data. In addition, new forms for specific SPFs are further evaluated to identify the best model using the Poisson-Gamma regression technique. To investigate how well the safety performance model fits the data set, several performance measures were examined. The performance measures summarize the differences between the observed and predicted values from related SPFs. Results indicate that the jurisdiction-specific SPFs provided the best fit of the data used in this study, and would be the best SPFs for predicting severe collisions in the City of Riyadh. The study finds that the HSM calibration using Riyadh local CMFs outperforms the calibration method using the HSM default values. The HSM calibration application for Riyadh crash conditions highlights the importance to address variability in reporting thresholds. One of the findings of this research is that, while the medians in this study have oversize widths ranging from 16ft-70ft, median width has insignificant effect on fatal and injury crashes. At the same time the frequent angle parking in Riyadh urban road networks seems to increase the fatal and injury collisions by 52 percent. On the other hand, this dissertation examined the calibration of the HSM SPFs for Urban intersections in Riyadh, Kingdom of Saudi Arabia (KSA) and the development of new set of models using three year of collision data (2004-2006) from the city of Riyadh. Three intersection categories were investigated: 3-leg signalized, 4-leg signalized, and 3-leg unsignalized. In addition, new forms for specific SPFs are further evaluated to identify the best model using the Poisson-Gamma regression technique. Results indicate that the new local developed SPFs provided the best fit of the data used in this study, and would be the best SPFs for predicting severe crashes at urban intersections in the City of Riyadh Moreover, this study examined the calibration of the HSM SPFs for Fatal and Injury (FI), Property Damage Only (PDO) and total crashes for Urban Four-lane divided roadway segments (U4D) in Muscat, Sultanate of Oman and the development of new SPFs. This study first calibrates the HSM SPFs using the HSM methodology, and then new forms for specific SPFs are further evaluated for Muscat's urban roads to identify the best model. Finally, Riyadh fatal and injury model were validated using Muscat FI dataset. Comparisons across the models indicate that HSM calibrated models are superior with a better model fit and would be the best SPFs for predicting collisions in the City of Muscat. The best developed collision model describes the mean crash frequency as a function of natural logarithm of the annual average daily traffic, segment length, and speed limit. The study finds that the differences in road geometric design features and FI collision characteristics between Riyadh and Muscat resulted in an un-transferable Riyadh crash prediction model. Overall, this study lays an important foundation towards the implementation of HSM methods in multiple cities (Riyadh and Muscat), and could help their transportation officials to make informed decisions regarding road safety programs. The implications of the results are extendible to other cities and countries and the region, and perhaps other developing countries as well.
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Beton durchwachsen: Ein Kunstobjekt aus Beton, das der Natur Raum gibtSteffen, Catrina 17 November 2023 (has links)
Das Thema der Ausschreibung hat mich zu einer Fußbodengestaltung für den öffentlichen Raum inspiriert, die von der Natur durchdrungen und in Besitz genommen werden kann. Die kreisrunde Fläche besteht aus sechs durchbrochenen Betonsegmenten, die in Serie produziert und variabel gestaltet werden können, z. B. mit Mosaiken aus farbigen Keramikscherben oder Natursteinen. Die Mitte der sechs Segmente bildet eine flache Schale, die als Springbrunnen oder Wasserschale gedacht ist. Die mit Erde gefüllten Durchbrüche in den Segmenten können mit Wildblumen bepflanzt werden, die Bienen, Schmetterlinge und andere Insekten anlocken. Die Wasserschale soll Insekten und Vögeln als Tränke dienen. In der vegetationsarmen Jahreszeit sorgt das Blütenornament der Bodengestaltung für eine freundliche Atmosphäre. Es tritt im Frühling und Sommer zunehmend hinter der Natur zurück, die sich aus ihm heraus entfaltet und es zu einer kleinen Oase werden lässt.
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Le transport d'albumine dans le tubule proximalRichard, Marie-Odile 01 1900 (has links)
Mémoire numérisé par la Direction des bibliothèques de l'Université de Montréal. / Afin d'étudier le processus de transport rénal d'albumine, nous avons mis au point une technique permettant de mesurer ce transport par des segments isolés de tubules proximaux de rein de chien in vitro. De l'albumine marquée au Bleu Evans (BE) est présentée à ces tubules et l'accumulation cellulaire du BE est utilisée comme index de transport d'albumine. L'accumulation de BE observée après exposition des tubules au BE seul a été comparée à celle observée après leur exposition aux complexes albumine, la liaison s'effectuant avec différents rapports de ces complexes albumine.
Nous avons établi que l'accumulation lysosomiale de BE témoignait d'un transport de l'albumine. Nous montrons que ce transport est supprimé par une hypothermie (37°C versus 4°C), par l'anoxie (demande de l'énergie), par des inhibiteurs de la synthèse d'ATP (KCN, penténoate-4), par la cytochalasine B mais pas par la colchicine.
Le transport d'albumine est influencé par les charges cationiques portées par cette molécule. En effet, un excès de BE (complexes albumine: BE saturés de BE) réduit le transport d'albumine. L'osmolarité (de 300 à 600 mOsm) inhibe également ce transport.
L'acidification des compartiments vésiculaires impliqués dans le cycle d'endocytose est importante pour le transport puisque son inhibition par la bafilomycine (H+-ATPase), le DIDS (canaux chlore compensant le potentiel membranaire), le NH3 (liaison du H+ intra-vésiculaire) montre le même effet sur le transport d'albumine. Par contre, l'amiloride qui inhibe les échangeurs Na+/H+ (NHE-3) n'a pas d'effet sur le transport mais semble accroître la liaison de l'albumine aux récepteurs de la membrane de la bordure en brosse.
On peut conclure que les mécanismes d'acidification luminale et endosomiale peuvent affecter différemment le transport d'albumine dans des suspensions tubulaires proximales. De plus, le transport d'albumine par le tubule proximal est un processus rapide et potentiellement considérable. Toute réduction du transport tubulaire pourrait se traduire par un accroissement important de la protéinurie. Cette anomalie ne reflète donc pas le seul dommage tubulaire mais aussi le transport de l'albumine.
Finalement, nous avons spéculé sur les conséquences du catabolisme rénal accru d'albumine au cours des néphropathies. Ce catabolisme peut en effet conduire à une toxicité tubulaire qui contribue peut-être au développement de la néphropathie. L'ensemble de notre réflexion nous amène à conclure qu'une intervention précoce réduisant la fuite glomérulaire d'albumine pourrait améliorer la condition du patient atteint de diabète.
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Spojování obrazů podle tvaru hran / Coupling of imagesGorgol, Martin January 2014 (has links)
This master’s thesis describes the design and implementation of the application that created the basis set pieces "puzzle" according to the shape of the folded edges of the original image. This application is developed using Matlab. The work also describes how to create a database of actual pieces of the puzzle composite photo image. Closer was also focused on finding the characteristic section points, their segmentation and appropriate description. There is dismantled procedure for selecting the types of symptoms and their extraction. On the basis of suitably described pieces of segmented parts is designed and implemented the algorithm of comparing and grouping into clusters. Using the proposed method of visualization is then displayed in the resulting composite picture puzzle.
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Spojování obrazů podle tvaru hran / Coupling of imagesGorgol, Martin January 2015 (has links)
This master’s thesis describes the design and implementation of the application that created the basis set pieces "puzzle" according to the shape of the folded edges of the original image. This application is developed using Matlab. The work also describes how to create a database of actual pieces of the puzzle composite photo image. Closer was also focused on finding the characteristic section points, their segmentation and appropriate description. There is dismantled procedure for selecting the types of symptoms and their extraction. On the basis of suitably described pieces of segmented parts is designed and implemented the algorithm of comparing and grouping into clusters. Using the proposed method of visualization is then displayed in the resulting composite picture puzzle.
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Traduction statistique par recherche localeMonty, Pierre Paul 08 1900 (has links)
La traduction statistique vise l’automatisation de la traduction par le biais de modèles statistiques. Dans ce travail, nous relevons un des grands défis du domaine : la recherche (Brown et al., 1993). Les systèmes de traduction statistique
de référence, tel Moses (Koehn et al., 2007), effectuent généralement la recherche
en explorant l’espace des préfixes par programmation dynamique, une solution
coûteuse sur le plan computationnel pour ce problème potentiellement NP-complet
(Knight, 1999). Nous postulons qu’une approche par recherche locale (Langlais
et al., 2007) peut mener à des solutions tout aussi intéressantes en un temps et
un espace mémoire beaucoup moins importants (Russell et Norvig, 2010). De plus,
ce type de recherche facilite l’incorporation de modèles globaux qui nécessitent des traductions complètes et permet d’effectuer des modifications sur ces dernières de manière non-continue, deux tâches ardues lors de l’exploration de l’espace des préfixes. Nos expériences nous révèlent que la recherche locale en traduction statistique est une approche viable, s’inscrivant dans l’état de l’art. / Statistical machine translation is a concerted effort towards the automation of the translation process. In the work presented here, we explore one of the major challenges of statistical machine translation: the search step (Brown et al., 1993). State of the art systems such as Moses (Koehn et al., 2007) search by exploring the prefix search space, a computationally costly solution to this potentially NP-complete problem (Knight, 1999). We propose that a local search approach can yield solutions which are qualitatively just as interesting, while keeping memory space and execution time at lower levels (Russell et Norvig, 2010). Furthermore, this type of search facilitates the use of global models for which a complete translation is needed and allows for non-continuous modifications, two tasks made difficult by exploring the prefix search space. The experiments we have conducted reveal that the use of local search during the search step in statistical machine translation is a viable, state of the art approach.
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An Analysis of the Participant Selection Process Under the Comprehensive Employment and Training Act: Texas and LouisianaDrake, William D. (William Daniel), 1950- 05 1900 (has links)
Federal guidelines required prime sponsors under the Comprehensive Employment and Training Act, or CETA, to serve the "significant segments" of the eligible population. This study analyzes whether prime sponsors in Texas and Louisiana correctly identified and served those segments. This study finds that eligible ethnic groups were properly identified and were served equitably; age and gender distinctions, however, were inadequately observed in the providing of services.
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Konfrontace analýzy tělesné stavby stanovené pomocí klasických antropometrických metod / Evaluation of body composition analysis using anthropometric measurements and methods based on bioimpedanceProvázek, Pavel January 2016 (has links)
Title: Evaluation of body composition analysis using anthropometric measurements and methods based on bioimpedance Aims: The main goal of this study is to analyze correlations of the data from bioimpedance with direct anthropometric measurements using statistical data analysis taking into consideration that the latter data is recognized as a gold standard. Methods: The sample of 42 men and 20 women was evaluated using standard anthropometric techniques. In addition, the dimensions, which are necessary to establish the weight of segments in upper and lower arms. The obtained data was firstly evaluated using a universal software ANTROPO. The both samples were concurrently investigated using the bioimpedance methods and the relationships between the aforementioned data and data from InBody was evaluated by three independent statistical methods such as substantive significance (Cohen's d), two-parameter linear regression and robust Passing- Bablok regression. Results: The results obtained enable to conclude that (with the exception of body height and BMI) the remaining parameters do not sufficiently correlate when using anthropometric measurements and data from InBody. As the relatively low number of participants may result in certain misrepresentation of the results, particularly in women, the...
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