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Mobeen, Shariq. "A Topologically Aware Resource Management System." Thesis, KTH, Radio Systems Laboratory (RS Lab), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-139949.
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As companies fight for market share whoever is able to bring products to market faster has an advantage over their competitors. Therefore it is absolutely essential to constantly evaluate and optimize processes to achieve shorter time-to-market for products. These optimizations have to be carried out in all parts of a company. This thesis describes one such attempt made by a Swedish telecommunication vendor focused on enabling a resource management system to gain a greater understanding of the resources available during testing. This system manages all of the hardware utilized by the users, software testers, within one particular part of the organization and aids users by automatically converting the information stored in its database into a configuration file that will later be used in the testing framework’s execution environment. Unfortunately, the current version of this resource management system lacks semantic understanding of the information necessary to automatically generate the configuration file, leaving a rather large part of the configuration file to be manually entered by the testers, a rather time-consuming task. The inability to completely automate the process means that the testing process is slower, more error prone, and increases the work needed for a new engineer to become a productive software tester. In order for the resource management system to automatically generate the configuration file it needs to know not only which resources it is managing, but must also how these resources are interconnected, i.e. the topology of the resources. For this reason this thesis describes how to make the resource management system topologically aware, thus making verification of the System under Test (SUT) more efficient and mitigating the problems mentioned above. This thesis does not deal with the intricate details of how to automatically extract the topology, as this is inherently domain specific and thus difficult to generalize. Rather, this thesis focused on how to allow users to custom-build their desired topology by defining a set of rules that restrict how resources can be interconnected. The goal of providing functionality for storing and retrieving topological information from database has been successfully achieved, and the resulting code has been integrated into the existing resource management system. However, the functionality has not yet been delivered because of a limitation in our front controller that stops us from providing an efficient web interface to our tool. After delivery the implemented solution is expected to remove most manual work related to test configuration and therefore also reduce the learning curve for new engineers.När företag slåss om marknadsandelar har de som kan leverera produkter till marknaden snabbare en fördel över sina konkurrenter. Det är därför av högsta vikt att kontinuerligt utvärdera och optimera processer för att produkten snabbare skall nå marknaden. Dessa optimeringar måste utföras inom samtliga områden inom ett företag. Denna uppsats beskriver ett sådant försök av ett svenskt telekombolag att stärka ett resurshanteringssystem för att uppnå en högre förståelse för de resurser den hanterar. Detta system hanterar samtlig hårdvara för användare (mjukvarutestare) inom en del av organisationen. Det hjälper användarna att automatiskt konvertera informationen i sin databas till en konfigurationsfil som används i testramverkets exekveringsmiljö. Tyvärr saknar den nuvarande versionen den semantiska förståelsen av dess data för att kunna automatiskt generera konfigurationsfilen, vilket tvingar användaren att manuellt ägna sig åt denna tidskrävande uppgift. Oförmågan att inte kunna automatisera fullt ut innebär att den övergripande testprocessen är långsammare, mer felbenägen och ökar tiden det tar för en ny ingenjör att komma igång och bli en produktiv mjukvarutestare. För att resurshanteringssystemet ska kunna generera konfigurationsfilen automatiskt krävs inte bara kunskap om vilka resurser den hanterar utan också hur dessa är sammankopplade. Det vill säga hur de topologiskt relaterar till varandra. Den här uppsatsen beskriver därför hur ett resurshanteringssystem kan bli topologiskt medvetet och därigenom åstadkomma en mer effektiv testning av produkten och därmed överkomma de tidigare nämnda problemen. Denna uppsats inte gå in på detaljer om hur man extraherar den topologiska strukturen av resurser eftersom detta i sin natur är domänspecifikt och därigenom svårt att generalisera. Fokus istället ligga på hur man kan tillåta användare att bygga önskad topologi genom att definiera regler för hur olika resurser kan sammankopplas. Målet vi satte upp med att kunna lagra och inhämta topologisk information från en databas har med framgång integrerats i det existerande resurshanteringssystemet. Ändringen är dock ännu inte fullt ut levererad på grund av en begränsning i vår nuvarande front controller som hindrar oss från att på ett effektivt sätt koppla samman vårt nya verktyg med ett webbgränsnitt. Efter leverans förväntas den implementerade lösningen eliminera större delen av det manuella arbete som tidigare krävts i samband med konfiguration av testmiljön, och därigenom även minska inlärningskurvan för nya ingenjörer.
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Sut, Aleksandra [Verfasser]. "Fire reisdues design: the chemistry behind synergistic effects in multicomponent polymeric systems / Aleksandra Sut." Berlin : Freie Universität Berlin, 2017. http://d-nb.info/1127606506/34.
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Fransson, Anna, and Fredrik Folkesson. "Brister i revisionsprocessen : Revisorsnämndens sytematiska och uppsökande tillsynsverksamhet." Thesis, Högskolan i Borås, Institutionen Handels- och IT-högskolan, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-20065.
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Revision innebär att kritiskt granska, bedöma samt uttala sig om ett företags finansiellainformation. Det är revisorns roll att utföra detta granskningsarbete och därmed kvalitetssäkrainformationen gentemot företagets intressenter. Hur detta arbete bedrivs kan ses som en process,vilken startar med att en planering av revisionsarbetet sker och följs därefter utav självagenomförandet (granskningen) där efter följer rapportering av vad som framkommit underrevisionen. Löpande skall även revisionen dokumenteras med sådan noggrannhet att revisornsarbete kan bedömas i efterhand.Det är viktigt att revisionsarbetet håller en hög nivå vilken i sin tur måste övervakas.Revisorsnämnden är en statlig myndighet vilken avser att just kontrollera Sveriges godkännandeoch auktoriserade revisorer genom att bedriva kvalitetskontroller samt tillsyner. En del i derastillsynsverksamhet är den systematiska och uppsökande tillsynen (SUT), vilken genomföras påutav dem själva utvalda riskgrupper. En utredning som visar på allvarliga brister i revisionenöverförs det till ett disciplinärende och efter prövning utdelas en disciplinär åtgärd. Sanktionernasom kan delas ut är erinran, varning med eller utan straffavgift samt upphävande av en revisorsbehörighet.Syftet med studien är att identifiera vilka brister i revisionsprocessen som Revisorsnämndenanmärker på samt att urskilja hur sambandet mellan de identifierade bristerna irevisionsprocessen och de utdelade sanktionerna ser ut. Ärendena som har legat till grund förgranskning har varit de som genom nämndens systematiska och uppsökande tillsynsverksamhetövergått till ett disciplinärende och som efter prövning tilldelats en disciplinär åtgärd.Granskningen har skett genom en utarbetad modells struktur som baserar sig pårevisionsprocessens fyra delar, planering, genomförande, rapportering och dokumentation. Engenomläsning har skett av de 129 stycken ärenden som studien totalt omfattar, varefter aktuelldata har plockats ut efter modellens valda variabler. För att kunna påvisa att samband eller inteförekommer har vi räknat fram korrelationskoefficient för varje fas och dess brister i förhållandetill sanktionen varning eller upphävande.Studiens resultat visar att Revisorsnämnden anmärker mest frekvent på bristerna jäv ochoberoende i planeringsfasen. Den vanligaste situationen då revisorn äventyrar sitt oberoende ärnär denne är vald revisor i en redovisningsbyrå vilken handhar redovisningen åt flera av revisornsövriga klienter. Den vanligaste jävsituationen är att revisorn upprättat eller biträtt, mer än vadsom tillåts enligt lag, med klientens bokföring eller upprättande av årsredovisning. Bristerna idokumentationsfasen beror till övervägande del på att revisorerna använt sig av kortfattadechecklistor, vilka inte är tillräckliga för att bedöma revisorns arbete i efterhand. Igranskningsfasen är det framförallt granskning av lager och interna kontroller/rutiner somrevisorerna får sina anmärkningar, på grund av att de inte närvarat vid inventering ellergranskning av dessa. Det enskilt mest frekvent hänvisade lagrummet har varit god revisionssed,vilken anses vara en övergripande praxis som gäller för samtliga faser av revisionsprocessen. Vifinner inget tydligt samband mellan någon enskild fas i revisionsprocessen och sanktionenupphävande, vilket indikerar att upphävande är ett resultat av brister i flera faser simultant.Starkare är sambandet mellan brister i de olika revisionsfaserna och sanktionen varning. Lägst samband mellan brist i revisionsfas och sanktion (oavsett varning eller upphävande) stårrapporteringsfasen för.
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Sut, Magdalena Maria [Verfasser], Thomas [Akademischer Betreuer] Raab, Thomas [Akademischer Betreuer] Fischer, and Anne M. [Akademischer Betreuer] Naeth. "Detection and behavior of iron-cyanide complexes in soils of a former Manufactured Gas Plant site / Magdalena Maria Sut ; Thomas Raab, Thomas Fischer, Anne M. Naeth." Cottbus : BTU Cottbus - Senftenberg, 2016. http://d-nb.info/1123152047/34.
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Puakpong, Nattaya, and n/a. "An individualized CELL Listening Comprehension Program: making listening more meaningful for Thai learners of English." University of Canberra. Languages, International Studies & Tourism, 2005. http://erl.canberra.edu.au./public/adt-AUC20060724.135729.
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The purpose of this research project was to examine theories of learning, theories of teaching, and theories of listening comprehension with a view to developing and testing a computer-enhanced listening comprehension system for English as a Foreign Language within the Thai university system. In addition to carrying out an in-depth literature review, factors contributing to difficulties in the listening process were also carefully examined in order to build a sound foundation for dealing with listening comprehension. A brief history and analysis of Computer Assisted Language Learning were presented together with a review of some computer programs with the aim of determining their characteristics. An Individualized CELL Listening Comprehension Program was then developed on the basis of four theoretical frameworks: the Constructivist approach, the need to use authentic spoken passages, reduction of cognitive load and response to learner differences.
The system was then used by twenty students of Suranaree University of Technology (SUT), Thailand for a period of fifteen weeks. Students were volunteers from different proficiency levels. SUT midterm and final examinations were employed, in part, to observe the effect of the program on proficiency levels. The SUT examinations, which were usually in a multiple-choice format, tested students on minor details through short, simple conversations. These tests might not fit entirely within best practice for listening but they seem to be a common way of measuring listening development in several educational contexts. Pretests and posttests examining global ideas and specific details in written and multiple-choice formats were then developed so as to provide a more accurate gauge of improvement in listening skills. Log files were kept in order to scrutinize in detail students� interactions with the system. Questionnaire and interview techniques were applied to seek out students� attitudes towards the program.
The results revealed that the participants performed better than their peers in the same proficiency levels in SUT midterm and final examinations although the difference was not at a statistically significant level. However, posttest scores were better than those of pretest at a statistically significant level in most aspects except in case of the global ideas. The log files revealed that all students tended to focus on the word level by attempting to understand and decode every word in the transcriptions. This fixation is likely to explain the low global ideas scores. Analysis was complicated by the fact that some students were not able to use the
program frequently enough, usually because of unexpectedly heavy schedules. However, the data extracted through questionnaires and interviews showed that most students demonstrated a positive attitude towards the various features of the program and felt that use of the program had improved their listening skills. In addition to findings relating to the development of listening comprehension, the study revealed that the majority of students felt that they did not think listening comprehension and, more generally the study of English, was sufficiently important to spend time on. This interesting but shocking discovery needs to be attended to immediately as it may have a strong effect on how Thai students prioritize their learning of English, and how this may impact on the levels of proficiency which they might subsequently attain.
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Doidy, Joan. "The Medicago truncatula sucrose transporter family." Diss., lmu, 2012. http://nbn-resolving.de/urn:nbn:de:bvb:19-151723.
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Zhao, Yuting. "Answer set programming : SAT based solver and phase transition /." View abstract or full-text, 2003. http://library.ust.hk/cgi/db/thesis.pl?COMP%202003%20ZHAOY.
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Bishop, Megan, Laura Hall, Ann McDermott, and Aydin Nazmi. "VITAMIN D SUB-SET ANALYSIS FROM THE FLASH STUDY." DigitalCommons@CalPoly, 2012. https://digitalcommons.calpoly.edu/theses/700.
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Vitamin D is important to the health of college students. The objective of our study was to measure sun exposure, skin pigmentation, vitamin D intake, and serum 25-hydroxyvitamin D (25[OH]D) in a subset of participants from The Following the Longitudinal Aspects of Student Health (FLASH) Study to determine the best predictors of 25(OH)D status. Participants were college-aged freshman who had their blood drawn in spring (Visit 1) and fall 2010 (Visit 2) at California Polytechnic State University (Cal Poly), San Luis Obispo, CA. (35.3°N). Vitamin D intake was measured using a 28-day food frequency recall questionnaire (specific to vitamin D foods and supplements) while questions specific to the frequency of milk and fish intake were accessed from the FLASH questionnaire. Sun exposure was measured using a 28-day recall questionnaire (time in sun and sun exposure index [SEI]) and questions (frequency of weekday/ weekend exposure) from the FLASH questionnaire. Skin pigmentation was measured using a reflectance spectrophotometer. Serum 25(OH)D was measured at a local pathology lab as measured by an IDS-iSYS. Means (SD) were as follows (n= 40): reflectance of the forehead was 61 (3.5) L* (Lightness) for Visit 1 and 61 (4.3) L* for Visit 2. Vitamin D intake was 308 (234) IU for Visit 1 and 316 (257) IU for Visit 2. Time outside was 81 (44) mins for Visit 1 and 76 (39) mins for Visit 2. Serum 25(OH)D was 85 (24) nmol/L for Visit 1 and 113 (28) nmol/L in Visit 2 which was significantly higher (p < 0.0001). The SEI was 53 (38) body surface area (BSA) exposed (m2) x mins for Visit 1 and 55 (34) m2 x mins Visit 2. Although 90% of participants in Visit 1 and 88% in Visit 2 were below the RDA guidelines for vitamin D intake (600 IU/day), 5% of participants in Visit 1 and none in Visit 2 had serum 25(OH)D serum levels < 50 nmol/L (the recommended level of sufficiency for bone health), demonstrating the importance of sun exposure to vitamin D status in these college students. To determine the strongest predictors of status we used regression analysis to predict serum 25(OH)D with skin reflectance, vitamin D intake, and sun exposure. We found that weekend sun exposure, fish intake, and forehead skin reflectance were the strongest predictors of serum 25(OH)D (R2= 0.50, p= 0.0010) demonstrating that simple questionnaires can help to predict serum 25(OH)D status.
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Coquereau, Albin. "[ErgoFast] Amélioration de performances du solveur SMT Alt-Ergo grâce à l’intégration d’un solveur SAT efficace." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLY007.
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Les démonstrateurs automatiques de la famille SMT (Satisfiability Modulo Theories) sont de plus en plus utilisés dans l’industrie et dans le monde académique. La raison de ce succès est liée d’une part à l’expressivité des langages d’entrée de ces solveurs (logique du premier ordre avec de nombreuses théories prédéfinies), et d’autre part, à leur efficacité toujours croissante. La rapidité des solveurs SMT est principalement liée aux procédures de décision qu’ils implémentent (SAT solvers, Simplex, etc.). Ainsi, les structures de données utilisées et les mécanismes de gestion mémoire ont un impact immédiat sur les performances. De même, le langage de programmation utilisé et les optimisations de code disponibles dans le compilateur sont très importants. Dans l’équipe VALS du LRI, nous développons le solveur SMT Alt-Ergo. Cet outil est programmé avec le langage OCaml et il est principalement utilisé pour prouver des formules logiques issues d’ateliers pour la preuve de programme comme Why3, Spark, Frama-C ou l’Atelier B. Ses concurrents directs sont z3 (Microsoft), CVC4 (Univ. New-York et Iowa) et yices2 (SRI). Malgré nos efforts dans la conception et l’optimisation des procédures de décision implantées, il ressort qu’Alt-Ergo est plus lent que ses concurrents sur certaines suites d’essais. Les raisons à cela sont multiples. Nous avons identifié trois causes importantes. — La première semble être liée aux structures de données utilisées dans le solveur. Pour des rai- sons de sûreté, la plus grande partie d’Alt-Ergo est développée dans un style de programmation purement fonctionnel avec des structures persistantes. Mais, l’efficacité de ces structures est en général moins bonne que des structures impératives. — La deuxième semble être liée à la gestion mémoire par ramasse-miettes du langage OCaml qui, comparée à une gestion manuelle, engendre de nombreux déplacements de blocs mémoire et probablement trop de défauts de cache. La différence entre un accès à la mémoire cache d’un ordinateur et un accès à la RAM étant de l’ordre de 150 cycles d’horloge, l’utilisation maximale de la mémoire cache est très importante pour les performances. — Enfin, la troisième semble être liée au manque d’optimisations du compilateur OCaml. En effet, nous avons constaté que l’écart de performance entre Alt-Ergo et certains de ses concurrents (écrits principalement en C ou C++) était fortement réduit lorsque l’on re-compilait ces derniers en baissant le niveau d’optimisation du compilateurThe automatic SMT (Satisfiability Modulo Theories) solvers are more and more used in the industry and in the academic world. The reason of this success is connected on to the expressiveness of the languages of entrance of these solvers (first order logic with predefined theories), and on their increasing efficiency. The speed of SMT solvers is mainly connected to the decision-making procedures which they implement (SAT solvers, Simplex, etc.). The data structures used and the memory management mechanisms have an immediate impact on the performances. Also, the programming language and the available optimizations of code in the compiler are very important. In the team VALS of the LRI, we develop the SMT solver Alt-Ergo. This tool is programmed with the language OCaml and it is mainly used to prove logical formulas from proof of program workshops as Why3, Spark, Frama-C or the B workshop. His direct competitors are z3 (Microsoft), CVC4 (Univ. New York and Iowa) and yices2 ( SRI). In spite of our efforts in the design and the optimization of the implanted decision-making procedures, it appears that Alt-Ergo is slower than his competitors on certain benchmarks. The reasons are multiple. We identified three important causes. - The first one seems to be connected to the data structures used in the solver. For safety reason, the largest part of Alt-Ergo is developed in a purely functional style of programming with persistent structures. But, the efficiency of these structures is generally worse than imperative structures. - The second seems to be connected to the memory management by the Garbage Collector of the language OCaml, which, compared with a manual management, engenders numerous movements of memory blocks and probably too many cache miss. The difference between cache memory access and RAM access being of the order of 150 clock cycles, the maximal use of the cache memory is very important for the performances. - Finally, the third seems to be connected to the lack of optimizations of the OCaml compiler. Indeed, we noticed that the gap from performance between Alt-Ergo and some of his competitors (written mainly in C or C ++) was strongly reduced when we recompiled them by lowering the compiler optimization level
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Gittens, Eleanor. "Criminal careers of a sub-set of offenders in Barbados." Thesis, University of Liverpool, 2011. http://livrepository.liverpool.ac.uk/5795/.
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The research in this thesis built on several papers that have brought criminal career research to the forefront of the scientific and empirical study of criminal behaviour. However, most existing research has been limited in scope and confined to a relatively small range of samples from more developed, first world, countries; in particular, the USA, the UK, and Canada. The main aim of the present research, therefore, was to replicate and extend previous work on criminal careers using a sample of offenders from a developing nation, Barbados. Given the limitations of previous work, the present research not only examined a number of key variables previously identified in relation to criminal careers (onset age, career length, chronicity, versatility, and seriousness), but also extended the investigation to look at issues surrounding specialisation, violence and demographic factors as related to criminal careers. The sample consisted of 1692 offenders who were charged in Barbados during 2002 and 2006 for robbery and sex offences and during 2006 for drug offences. Several important findings emerged. In particular, there was a significant negative relationship between onset age and the other criminal career variables, the latter of which were positively correlated with each other; this supports the idea of a general factor underlying criminal careers. Nevertheless, there were also variations according to different types of offences. Thus, on average, sex and drug offenders had the shortest career lengths and showed the least versatility and the lowest levels of chronicity and seriousness. In contrast, burglary offenders had the longest career lengths, the earliest age of onset, the greatest versatility, and committed the most serious crimes. In addition, contrary to the findings of some previous studies, there was evidence of specialisation in the sample, and specialists had an earlier age of onset, longer careers, lower versatility and lower levels of crime seriousness than non-specialists. Violent offenders showed a similar pattern of earlier age of onset, longer careers, greater versatility and higher levels of chronicity and seriousness than non-violent offenders. Finally, there were some differences according to gender, race, housing area, employment type and educational level for the key criminal career variables. The results of the research are discussed in terms of their comparability with previous research in the field from more developed nations. Despite some interesting discrepancies, it is argued that, in general, the criminal career findings of the present sample are remarkably similar to previous findings from other countries; however, this could be a feature of the particular historical background of Barbados. Other implications for criminal career research, including practical applications, are also discussed, as well as directions for future research.
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Sekar, Sanjana. "Logic Encryption Methods for Hardware Security." University of Cincinnati / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1505124923353686.
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Pettersson, Ulf, and Magnus Zetterlund. "Är svenska aktiepriser trögrörliga? : En studie av tidsförskjutningar i prissättningen av värdepapper i samband." Thesis, Linköping University, Department of Management and Engineering, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-11090.
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Bakgrund
Richard J. Rendleman, Charles P. Jones & Henry A. Latané påvisade i en studie år 1982 med hjälp av en regressionsmodell att tidsförskjutningar i prissättningen av aktier existerat på den amerikanska marknaden vid kvartalsresultat som avvek från en trend. Det inspirerade oss att med samma metod undersöka om liknande tidsförskjutningar även existerat på den svenska marknaden.
Syfte
Syftet med denna uppsats är att empiriskt studera om det existerat tidsförskjutna aktieprisjusteringar kvartalsvis, baserade på standardiserade oförväntade kvartalsresultat respektive standardiserade oförväntade kassaflöden, på den svenska aktiemarknaden under åren 2004-2006. Om sådana tidsförskjutningar av prisbildning existerat avser vi även att diskutera dem utifrån teorier om behavioral finance.
Genomförande
Med linjär regression estimeras EPS respektive kassaflöden utifrån historiska data. Estimeringarnas avvikelse från rapporterade data jämförs sedan med aktiekursutveckling för att se om samband föreligger mellan storleken på avvikelserna och efterföljande tidsförskjutning.
Resultat
Under tidsperioden 2004-2006 påvisar vi tidsförskjutningar med standardiserade oförväntade kvartalsresultat men inte med standardiserade oförväntade kassaflöden.
Background
Richard J. Rendleman, Charles P. Jones & Henry A. Latané presented a study in 1982 where they showed anomalies on the American stock exchange when using standardized unexpected earnings. Their result inspired us to do a similar research on the Swedish stock exchange.
Purpose
The purpose of this study is to do an empirical study of the existence of drifts in stock price adjustments, based on standardized unexpected earnings and standardized unexpected cash-flows on the Swedish stock exchange during the years 2004-2006. If anomalies are discovered we intend to discuss them in terms of behavioral finance.
Implementation
With a linear regression we estimate EPS respective cash-flow from historical data. The deviations from quarterly reported data are compared with the development of stock-prices.
Conclusion
During the time period 2004-2006 we show that anomalies have existed when standardized unexpected earnings are applied and that no anomalies can be found with standardized unexpected cash-flows.
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Alhalabi, Rana. "Conception innovante de circuits logiques et mémoires en technologie CMOS/Magnétique." Thesis, Université Grenoble Alpes (ComUE), 2019. http://www.theses.fr/2019GREAT103.
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Après de nombreuses études au cours des dernières décennies, les technologies émergentes de mémoires non volatiles décollent enfin dans le marché des semi-conducteurs. Elles ont comme objectif principal de prendre le relais des mémoires flash et DRAM qui touchent à leurs limites en termes de densité, de miniaturisation, de consommation ou d'amélioration de la vitesse. Parmi les technologies émergentes, la mémoire MRAM passe de simple « candidat potentiel » il y a quelques années à des mémoires fabriquées par de grandes industries, aujourd’hui disponibles sur le marché, suscitant un fort intérêt général dans le monde industriel de la microélectronique. Ses atouts permettent d'intégrer cette mémoire dans des flots de conception full custom et numérique afin de pouvoir améliorer certaines performances soit au niveau cellule élémentaire soit au niveau architecture. C'est pourquoi nous proposons dans une première partie la conception de circuits hybrides CMOS/magnétique de type LUT (Look Up Table) en technologie STT-MRAM (Spin Transfer Torque) ayant pour but de réaliser un démonstrateur. La conception full custom de A à Z de LUT innovantes a été mise en œuvre. Nous proposons dans la deuxième partie la conception d'une mémoire embarquée en technologie SOT (Spin Orbit Torque), pour laquelle un brevet d'invention a été déposé. Enfin, dans la dernière partie, ce type de mémoire SOT-MRAM ainsi que d’autres de type STT-MRAM ont été intégrées dans un processeur volatil afin d'évaluer les éventuels intérêts de ces technologies magnétiques STT et SOT dans ce type de circuit largement répandusAfter many studies in recent decades, emerging non-volatile memory technologies have recently taken off in the semiconductor market. Their main objective is to replace flash and DRAM memories that reach their limits in terms of density, miniaturization, consumption or speed improvement. Among the emerging technologies, the MRAM memory has been identified as a strong candidate to become a leading storage technology for future memory applications. That is why we propose in the first part the design of hybrid CMOS / Magnetic circuits of LUT type (Look Up Table) in STT-MRAM technology (Spin Transfer Torque) aiming to realize a demonstrator. The full custom design from A to Z of innovative LUTs has been implemented. We propose in the second part the design of a full memory in SOT (Spin Orbit Torque) technology, for which a patent has been deposited. Finally, in the last part, this type of memory SOT-MRAM as well as others of type STT-MRAM were integrated in a volatile processor to evaluate the possible interests of these magnetic technologies STT and SOT in this type of circuit
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Kowalski, Michael Władisław. "Comparative study of oscillatory integral, and sub-level set, operator norm estimates." Thesis, University of Edinburgh, 2010. http://hdl.handle.net/1842/4687.
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Oscillatory integral operators have been of interest to both mathematicians and physicists ever since the emergence of the work Theorie Analytique de la Chaleur of Joseph Fourier in 1822, in which his chief concern was to give a mathematical account of the diffusion of heat. For example, oscillatory integrals naturally arise when one studies the behaviour at infinity of the Fourier transform of a Borel measure that is supported on a certain hypersurface. One reduces the study of such a problem to that of having to obtain estimates on oscillatory integrals. However, sub-level set operators have only come to the fore at the end of the 20th Century, where it has been discovered that the decay rates of the oscillatory integral I(lambda) above may be obtainable once the measure of the associated sub-level sets are known. This discovery has been fully developed in a paper of A. Carbery, M. Christ and J.Wright. A principal goal of this thesis is to explore certain uniformity issues arising in the study of sub-level set estimates.
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Thaher, Mohammed Shaban Atieh. "Efficient Algorithms for the Maximum Convex Sum Problem." Thesis, University of Canterbury. Computer Science and Software Engineering, 2014. http://hdl.handle.net/10092/9347.
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This research is designed to develop and investigate newly defined problems: the Maximum Convex Sum (MCS), and its generalisation, the K-Maximum Convex Sum (K-MCS), in a two-dimensional (2D) array based on dynamic programming. The study centres on the concept of finding the most useful informative array portion as defined by different parameters involved in data, which is generically expressed in this thesis as the Maximum Sum Problem (MSP). This concept originates in the Maximum Sub-Array (MSA) problem, which relies on rectangular regions to find the informative array portion. From the above it follows that MSA and MCS belong to MSP. This research takes a new stand in using an alternative shape in the MSP context, which is the convex shape.
Since 1977, there has been substantial research in the development of the Maximum Sub-Array (MSA) problem to find informative sub-array portions, running in the best possible time complexity. Conventionally the research norm has been to use the rectangular shape in the MSA framework without any investigation into an alternative shape for the MSP. Theoretically there are shapes that can improve the MSP outcome and their utility in applications; research has rarely discussed this. To advocate the use of a different shape in the MSP context requires rigorous investigation and also the creation of a platform to launch a new exploratory research area. This can then be developed further by considering the implications and practicality of the new approach.
This thesis strives to open up a new research frontier based on using the convex shape in the MSP context. This research defines the new MCS problem in 2D; develops and evaluates algorithms that serve the MCS problem running in the best possible time complexity; incorporates techniques to advance the MCS algorithms; generalises the MCS problem to cover the K-Disjoint Maximum Convex Sums (K-DMCS) problem and the K-Overlapping Maximum Convex Sums (K-OMCS) problem; and eventually implements the MCS algorithmic framework using real data in an ecology application.
Thus, this thesis provides a theoretical and practical framework that scientifically contributes to addressing some of the research gaps in the MSP and the new research path: the MCS problem. The MCS and K-MCS algorithmic models depart from using the rectangular shape as in MSA, and retain a time complexity that is within the best known time complexities of the MSA algorithms. Future in-depth studies on the Maximum Convex Sum (MCS) problem can advance the algorithms developed in this thesis and their time complexity.
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Galvis, Juliana Zapata. "Estimativa das tensões internas e externas atuantes no amostrador SPT durante sua cravação." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/18/18132/tde-02052016-155809/.
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O ensaio SPT (Standard Penetration Test) é um dos ensaios geotécnicos mais utilizados no Brasil e em grande parte do mundo, para determinar o índice NSPT. Esse índice é usado para estimar, através de correlações empíricas, parâmetros do solo, capacidade de suporte, recalque de fundações, etc. Pelo fato destas correlações não terem nenhum fundamento científico, pesquisadores têm procurado desenvolver métodos racionais de análise, baseados em energia. Com esses métodos pode-se determinar a eficiência do ensaio SPT, que é uma importante característica utilizada nas análises dos resultados do ensaio. As quantidades de energia envolvidas no ensaio SPT são determinadas através do método EFV. Para tanto, é necessária a utilização de hastes instrumentadas com acelerômetros e células de carga durante a realização dos ensaios. Com os sinais de força e aceleração foram determinadas as quantidades de energia, força de reação dinâmica experimental do solo, forças de reação teórica estática e dinâmica e tensões atuantes no amostrador. Neste trabalho, como os sinais de força e aceleração foram registrados em uma seção instrumentada logo acima do amostrador, a eficiência do sistema pode ser determinada de acordo com a definição proposta por Aoki e Cintra (2000), e incluindo a correção sugerida por Odebrecht (2003). Nesta pesquisa foi desenvolvido um sistema de extrator de amostras, constituído de uma base, um cilindro hidráulico e uma célula de carga, para quantificar experimentalmente a força de atrito interno para posteriormente determinar as demais tensões que atuam no amostrador e o parâmetro a de Aoki, o qual é a razão entre o atrito interno e o atrito externo entre o solo e o amostrador.The Standard Penetration Test (SPT) is one of the in-situ geotechnical tests most used in Brazil, as well as in many parts of the world. Through empirical correlations, the NSPT index is used to estimate parameters of the soil, carrying capacity, discharge of foundations, etc. Because these correlations have no scientific basis, researchers have developed rational methods of analysis, based on energy concepts. Using these concepts, the efficiency of the SPT, which is essential in the analysis of the test results, can be assessed. The amounts of energy involved in the SPT test are evaluated by the EFV method. Therefore, it is necessary instrumented rods with accelerometers and load cells for performing the tests. With force and acceleration records, amounts of energy, experimental dynamic reaction force of the soil, theoretical static and dynamic reaction forces and stresses acting on the sampler were assessed. In this work, as the force and acceleration signals were recorded at an instrumented section just above the sampler, the system efficiency could be determined according to the definition proposed by Cintra and Aoki (2000), including the energy corrections suggested by Odebrecht (2003). In this study, a sample extractor system consisting of a base, a hydraulic cylinder and a load cell was designed. The objective of this equipment is to experimentally quantify the internal friction force, allowing evaluating the stresses acting on the sampler. Also, the Aoki\'s a parameter, which is the ratio of internal friction and external friction between the ground and the sampler, could be calculated.
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Escate, Maria Victoria Gutierrez. "O estudo das explosões solares simpatéticas e sua observação em frequências SUB-THz." Universidade Presbiteriana Mackenzie, 2015. http://tede.mackenzie.br/jspui/handle/tede/1306.
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Previous issue date: 2015-06-18Fundação de Amparo a Pesquisa do Estado de São Paulo
Sympathetic solar flares are events occurring nearly simultaneously at distinct active regions with physical connection between them. Two flares that occurred on March 8, 2011 in active regions NOAA (National Oceanic and Atmospheric Administration) 11163 (N17W91) and AR 11165 (S20W91) is being studied. The larger flare occurred in the Southern region and was preceded by a smaller flare in the Northern region, about 5 minutes before. Both events were observed by RHESSI. The first explosion was detected by SST in the AR of north hemisphere, in two stages. There are also EUV SDO high cadence images that exhibit a distinct rapid flash coinciding with the SST burst as well as clear large scale magnetic connections between the two active regions. Three possible flare triggering agents from the Northern region towards the Southern region are being investigated: (a) hydrodynamic waves along the large coronal interconnecting magnetic structure, (b) surface Moreton-like shock waves, (c) plasma echoes.
Explosões solares simpatéticas são eventos que ocorrem quase simultaneamente, em regiões ativas distintas. Este trabalho apresenta o estudo de duas explosões solares que ocorreram no dia 8 de março de 2011, nas regiões ativas NOAA 11163 (N17W91) e 11165 (S20W91), entendidas como um evento simpatético característico. A maior explosão ocorreu na região sul, precedida por uma explosão menor na região norte, 5 minutos antes. Ambas detecções foram observadas em raios-X duros pelo satélite RHESSI. A primeira explosão também foi detectada pelo SST na RA do hemisfério norte. Imagens do SDO/AIA em EUV de alta cadência exibem um flash rápido e distinto, coincidente com a detecção do SST. As observações mostram que existem conexões magnéticas em grande escala entre as duas regiões ativas. Isso nos permitiu estudar três possíveis agentes de ativação entre as duas regiões ativas, sendo investigados, então, os seguinte mecanismos de ativação: (i) ondas hidrodinâmicas, ao longo da grande estrutura magnética coronal; (ii) ondas de choque do tipo Moreton, e, (iii) eco de plasma.
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Champion, Adrien. "Collaboration de techniques formelles pour la vérification de propriétés de sûreté sur des systèmes de transition." Thesis, Toulouse, ISAE, 2014. http://www.theses.fr/2014ESAE0001/document.
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Ce travail porte sur la vérification de composants logiciels dans les systèmes embarqués critiques avioniques. Les conséquences d’une erreur dans de tels systèmes pouvant s'avérer catastrophiques, il se doivent de respecter leur spécification. La vérification formelle tend à prouver cette adéquation si elle est vraie, ou à produire un contre-exemple si elle ne l’est pas. Les méthodes actuelles ne sont pas capable de traiter les les systèmes industriels. La découverte d’informations supplémentaires (invariants) sur le système permet de réduire l’espace de recherche afin de renforcer l’objectif de preuve: les informations découvertes sont suffisantes pour conclure “facilement”. Nous définissons une architecture parallèle permettant à des méthodes de découverte d’invariants de collaborer autour d’un moteur de kinduction. Dans ce contexte nous proposons HullQe, une nouvelle heuristique de génération d’invariants potentiels combinant un calcul de pré-image par élimination de quantificateurs et des calculs d’enveloppes convexes. Nous montrons que HullQe est capable, automatiquement, de renforcer des objectifs de preuve correspondant à la vérification de patrons de conception courants en avionique. Pour autant que nous sachions, les méthodes actuelles sont incapables de conclure sur ces problèmes. Nous détaillons nos améliorations de l’algorithme d’élimination de quantificateurs de Monniaux afin d’assurer le passage à l’échelle sur nos systèmes. Notre framework formel Stuff est une implémentation de notre architecture parallèle composée de HullQe, d'une technique de découverte d’invariants basée sur des templates, et d'une généralisation de PDR à l’arithmétiqueThis work studies the verification of software components in avionics critical embedded systems. As the failure of suchsystems can have catastrophic consequences, it is mandatory to make sure they are consistent with their specification.Formal verification consists in proving that a system respects its specification if it does, or to produce a counterexample if itdoes not. Current methods are unable to handle the verification problems stemming from realistic systems. Discoveringadditional information (invariants) on the system can however restrict the search space enough to strengthen the proofobjective: the information discovered allow to "easily" reach a conclusion. We define a parallel architecture for invariantdiscovery methods allowing them to collaborate around a k-induction engine. In this context we propose a new heuristic forthe generation of potential invariants by combining an iterated preimage calculus by quantifier elimination with convexhull computations, called HullQe. We show that HullQe is able to automatically strengthen proof objectives correspondingto safety properties on widespread design patterns in our field. To the best of our knowledge, these systems elude currenttechniques. We also detail our improvements to the quantifier elimination algorithm by David Monniaux in 2008, so that itscales to computing preimages on our systems. Our formal framework Stuff is an implementation of the parallel architecturewe propose in which we implemented not only HullQe, but also a template-based invariant discovery technique, and ageneralisation to Property Directed Reachability to linear real arithmetic and integer octagons
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Peixoto, Anna Silvia Palcheco 1965. "Estudo do ensaio SPT-T e sua aplicação na prática de engenharia de fundações." [s.n.], 2001. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257654.
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Orientador: David de CarvalhoTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agricola
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Doutorado
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Pinto, Alberjan de Jesus Jean. "Eventos Kaizen aplicados no processo de linha de montagem SMT para redução de tempo de set-up: estudo de caso." Universidade Federal do Amazonas, 2011. http://tede.ufam.edu.br/handle/tede/3597.
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Previous issue date: 2011-07-15Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
This work was aimed at applying the tools of the PRS System (Lean Production), whose primary tool was crafted VSM (Value Stream Mapping), a process known as SMT (Surface Mount Technology). Principles for lean production, eliminating waste and creating value stream in a real situation through kaizen events, were used to obtain results of this application, showing a lean transformation, with significant reductions in waste generated in the process. The study period was eight months into a private company located in PIM, where through the use of tools of this system and methodology of action research, it was possible to identify the critical process - setup - where focused improvement actions. With the change in the system setup, the standard work and creating a setup program using visual aid, favoring the continuous flow in this process. During the research, trainings were conducted in the factory with the operators, leaders, supervisors and engineers responsible, who participated actively in the improvement actions. Therefore, through value stream mapping, we propose to draw the current state of the stream, offering a future state, identifying and eliminating everything does not add value. To quantify the increase in productivity on the factory floor and total earnings of areas in the factory.
Este trabalho teve como objetivo a aplicação das ferramentas do Sistema de Produção Enxuta (SPE), cuja principal ferramenta trabalhada foi o Mapeamento da cadeia de valor (VSM), num processo denominado Tecnologia em Montagem de Superfície (SMT). Princípios que regem a produção enxuta, eliminação de desperdícios e a criação do fluxo de valor em uma situação real, através de eventos kaizen, foram utilizados para a obtenção de resultados dessa aplicação, evidenciando uma transformação enxuta, com expressivas reduções dos desperdícios gerados no processo. O período da pesquisa foi de oito meses em uma empresa privada situada no PIM, onde por meio da utilização de ferramentas desse sistema e a metodologia da pesquisa-ação, foi possível identificar o processo crítico setup para onde se concentraram as ações de melhorias. Com a mudança na sistemática de setup, no trabalho padronizado e criação de um setup programado, utilizando indicações visuais, favorecendo o fluxo contínuo nesta cadeia produtiva. No desenvolvimento da pesquisa, foram realizados treinamentos in loco com os operadores, líderes, supervisores e os engenheiros responsáveis, os quais participavam ativamente nas ações de melhoria. Portanto, através do mapeamento da cadeia de valor, propõem-se desenhar o estado atual da cadeia, propondo um estado futuro, identificando e eliminando aquilo que não agrega valor. Com isso, quantificar o aumento na produtividade no chão de fábrica e ganhos totais de áreas na fábrica.
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Manduca, Paulo Cesar Souza 1965. "As relações Brasil-Africa do Sul." [s.n.], 1995. http://repositorio.unicamp.br/jspui/handle/REPOSIP/279408.
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Orientador: Shiguenoli MiyamotoDissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Filosofia e Ciencias Humanas
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Resumo: Não informado
Abstract: Not informed.
Mestrado
Mestre em Ciência Política
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Quetz, Abdiel. "PHASE TRANSITIONS AND MAGNETOCALORIC EFFECT IN MnNiGe1−xAlx, Ni50Mn35(In1−xCrx)15 AND (Mn1−xCrx)NiGe1.05." OpenSIUC, 2014. https://opensiuc.lib.siu.edu/theses/1514.
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The magnetocaloric and thermomagnetic properties of the MnNiGe1-xAlx, Ni50Mn35(In1−xCrx)15 and (Mn1−xCrx)NiGe1.05 systems have been studied by x-ray diffraction, differential scanning calorimetry (DSC), and magnetization measurements. Partial substitution of Al for Ge in MnNiGe1−xAlx results in a first-order magnetostructural transition (MST) from a hexagonal ferromagnetic to an orthorhombic antiferromagnetic phase at 186 K (for x = 0.09). A large magnetic entropy change of ∆SM = -17.6 J/kg K for ∆H = 5 T was observed in the vicinity of TM = 186 K for x = 0.09. This value is comparable to those of well-known giant magnetocaloric materials, such as Gd5Si2Ge2, MnFeP0.45As0.55, and Ni50Mn37Sn13 [1]. The values of the latent heat (L = 6.6 J/g) and corresponding total entropy changes (∆ST = 35 J/kg K) have been evaluated for the MST using DSC measurements. Large negative values of ∆SM of -5.8 and -4.8 J/kg K for ∆H = 5 T in the vicinity of TC were observed for x = 0.09 and 0.085, respectively. Partial substitution of Cr for Mn in(Mn1−xCrx)NiGe1.05 results in a MST from a hexagonal paramagnetic to an orthorhombic paramagnetic phase near TM ~ 380 K (for x = 0.07). Partial substitution of Cr for In in Ni50Mn35(In1−xCrx)15 shifts the magnetostructural transition to a higher temperature (TM ~ 450 K) for x = 0.1. Large magnetic entropy changes of ∆SM = -12 (J/kgK) and ∆S = -11 (J/kgK), both for a magnetic field change of 5 T, were observed in the vicinity of TM for (Mn1−xCrx)NiGe1.05 and Ni50Mn35(In1−xCrx)15, respectively. The concentration-dependent (T-x) phase diagram of transition temperatures (magnetic, structural, and magnetostructural) has been generated using magnetic, XRD, and DSC data. The role of magnetic and structural changes on transition temperatures are discussed.
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Andersson, Catrin, and Emma Lundin. ""Snipp snap snut, nu tog tiden slut" : En analys av användares medvetenhet kring integritet på mobilapplikationer." Thesis, Uppsala universitet, Institutionen för informatik och media, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-256065.
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Knutsbo, Sandra, and Jenny Melander. "Snipp snapp snut, så var sagan slut! : En observationsstudie om högläsningens kvalitet och kvantitet i förskolan." Thesis, Mittuniversitetet, Avdelningen för utbildningsvetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-28317.
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Syftet med studien har varit att undersöka kvaliteten och kvantiteten på högläsningen i förskolan. Den fokuserar på hur ofta högläsningen sker och om den är planerad eller spontan, för att ta reda på högläsningens kvantitet. Samt vilka slags samtal som existerar i samband med högläsningen och hur ofta de förekommer, för att undersöka högläsningens kvalitet. För att undersöka detta genomfördes åtta observationer, under fyra förmiddagar och fyra eftermiddagar, på fyra olika förskolor i en kommun i Mellansverige. Resultatet i studien visar att det sker mest planerade högläsningar och att det till större del är läsvila som sker efter lunchen varje dag. Detta indikerar att det inte är alla barn på förskolan som har möjlighet att ta del av högläsningen eftersom att en del av barnen sover vid denna tidpunkt på dagen. Syftet med läsvilan var först och främst att lugna ner barnen och att de skulle vila, vilket blev synligt i resultatet då antalen samtal var relativt låga. Läsvilans syfte och därmed låga antal samtal påverkan högläsningens kvalitet. De samtal i samband med de spontana högläsningstillfällena skedde inte i samma utsträckning som i de planerade högläsningarna.Godkännandedatum: 2016-06-05
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Lindberg, Emma, and Lina Stührenberg. "Snipp snapp snut, så var samverkan slut? - En studie om hur socialtjänsten upplever samverkan med arbetsförmedlingen." Thesis, Malmö universitet, Fakulteten för hälsa och samhälle (HS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-24819.
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The aim of this study is to understand how social workers whose mission is to investigate people's right to financial aid, experience collaboration with Sweden’s employment agency, Arbetsförmedlingen. The reason the authors of this study chose specifically collaboration with Arbetsförmedlingen is due to the reorganization of offices around the country. In order to understand how the organizations operate, collaboration theory and organization theory was studied. Furthermore, both national and international collaboration studies and cases were researched. Interviews of five social workers were conducted by meeting them in person. By recording and transcribing the interviews the authors were able to analyse them by coding. The results of the interview show that due to the reorganization of Arbetsförmedlingen, the social workers experience difficulties of collaboration. Social workers state that it is hard to pursue the work assignments and to help the clients as smooth as possible. Furthermore the social workers fear a concern to the privatization of Arbetsförmedlingen and that this will lead to an even further lack of collaboration. The conclusion of this study issues that it is prior to make sure the collaboration between social workers and the case workers at Arbetsförmedlingen has good standards. A functional collaboration would ease not only the social workers nor the case workers, but the clients. Should Arbetsförmedlingen reorganize the reorganization in order to solve the obvious problem of collaboration?
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Holbrook, Chad Monroe. "Characterization and Solid Electrolyte behavior of (Ag2S)x(As2S3)1-x glasses." University of Cincinnati / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1187051715.
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Garabato, Brady D. "Synthesis and Computational Studies of a New Class of Lanthanide Niobate Cluster : [Ln4(H2O)8(SO4)5(NbO3)2]+3H2O; Ln= Dy, Tb." TopSCHOLAR®, 2013. http://digitalcommons.wku.edu/theses/1294.
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Polyoxoniobates (PONbs) are a small family of highly electron-rich clusters. The development of new solids composed of these clusters have applications in green energy and electronics. However, the high charge environment of PONbs typically requires alkaline synthetic conditions that are unsuitable for introducing other metals and organic molecules, making synthesis of new systems difficult. To date, very few transition metals and organic ligands have been incorporated into these PONb solids, and lanthanide metal inclusion, which generally improves photoconductivity due to longlived f-orbital excitations, has not yet been fully realized. Here, the synthesis of a new class of lanthanide niobate cluster [Ln4(H2O)8(SO4)5(NbO3)2]·3H2O; Ln= Dy, Tb under acidic conditions is reported. Structures were determined by crystallography and time-dependent density functional theory (TD-DFT) was used to provide insight into photo-induced electronic transitions. Supporting computational methods that are currently being developed for modeling these emerging cluster systems are described.
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Wang, Wei [Verfasser]. "Sb2S3/Sb2Se3 Nanostructures and Applications / Wei Wang." Konstanz : KOPS Universität Konstanz, 2019. http://d-nb.info/1201276012/34.
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Pires, Humberto Santos. "Estudo sero-epidemiológico da leishmaniose canina na sub-região do Pinhal Interior Sul." Master's thesis, Universidade de Évora, 2011. http://hdl.handle.net/10174/14125.
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No presente trabalho, os concelhos de Mação, Proença-a-Nova e Vila de Rei pertencentes à
sub-região do Pinhal Interior Sul, constituíram as áreas geográficas alvo de estudo seroepidemiológico.
Procedeu-se ao preenchimento de questionário epidemiológico e à análise por
ELISA, de amostras de soro de 282 animais, durante o período de campanha de vacinação
anti-rábica. Observou-se que, os cães de Proença-a-Nova e de Vila do Rei tinham mais
probabilidade de serem seropositivos do que os cães de Mação. A análise de agregados
espaciais (“clusters”) permitiu detectar regiões geográficas cujo risco de existir doença é
consideravelmente maior do que nas restantes áreas em estudo. Através da análise
geoespacial demonstrou-se a distribuição da seroprevalência de leishmaniose nos três
concelhos, concluindo-se que existem duas áreas com maior probabilidade de um cão estar
seropositivo. Demonstrou-se também, possível relação entre alguns tipos de ocupação do solo
e o nível de seroprevalência; ABSTRACT: In this study the counties of Mação, Proença-a-Nova and Vila de Rei, within the sub-region of
Pinhal Interior Sul, were the geographic areas investigated by a sero-epidemiological study.
Both an epidemiological questionnaire and the screening of serum samples from animals by
ELISA with sera from 282 dogs took place during the vaccination campaign against rabies.
Dogs from Proença-a-Nova and Vila de Rei had an increased risk a seropositivity than the dogs
of Mação. The spatial cluster analysis identified geographic areas where there is a considerably
higher risk of seropositivity than in the other areas of the study. Geospatial analysis showed the
distribution of geospatial prevalence of leishmaniosis in the three counties, which may allow the
conclusion that there are two areas with higher relative risk of seropositivty in dogs. A potential
association between some types of land occupation and seroprevalence level has also been
demonstrated.
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Hoy, Julia Richardson. "Microwave-Assisted Hydrothermal Synthesis of Fine Grained La0.77Sr0.20Al0.90Mn0.10O3-δ." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1269532397.
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Woods, Charles. "Electrochemical deposition of molybdenum and tungsten from trinuclear metal clusters (M3O2(OAC)6(H2O)3(CF3SO3)2) in 1-ethyl-3-methylimidazolium tetrafluoroborate ionic." Wright State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=wright1279124132.
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Cai, Liuchun. "Molecular Structure of Ga2S3)x(GeS2 )1-x Glasses by Raman Scatteringand T-Modulated DSC." University of Cincinnati / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1057759838.
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Nalpas, Thierry. "Inversion des grabens du sud de la mer du Nord. Données de sub-surface et modélisation analogique." Phd thesis, Université Rennes 1, 1994. http://tel.archives-ouvertes.fr/tel-00656044.
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Le concept d'inversion tectonique a été introduit par les géologues pétroliers de la Mer du Nord, pour traduire l'aspect anormal de grabens formant des hauts structuraux par rapport à leurs plates-formes. La compréhension des mécanismes de l'inversion et des paramètres influents sur ces mécanismes est très importante à la fois pour l'industrie pétrolière, afin de mieux connaÎtre la genèse et le piégeage des hydrocarbures dans les grabens inversés, mais aussi pour la recherche fondamentale, quant à leur signification géodynamique. En effet, étudier l'inversion tectonique des bassins sédimentaires, et tenter d'en comprendre le fonctionnement, c'est aussi aborder la déformation continentale sous l'un d~ ses aspects fondamentaux: la réactivation des structures héritées d'échelle crustale. La zone d'étude considérée dans ce travail est le Sud de la Mer du Nord, et plus particulièrement le "Broad Fourteens basin" qui fait partie des grabens hollandais. Les grabens de la Mer du Nord se sont formés entre le Trias et le Crétacé inférieur et ont été inversés au Crétacé supérieur et au Tertiaire. La variation de leur orientation et la présence pour certains d'entre eux' d'un niveau de décollement supracrustal, le sel Zechstein, en font des structures très diversifiées. L'analyse précise des données de sub-surface du "Broad Fourteens Basin" a d'abord permis d'identifier les paramètres les plus importants de l'inversion tectonique. Plusieurs séries d'expériences sur modèles analogiques ont ensuite été réalisées pour étudier les effets de ces paramètres sur le développement des structures d'inversion. Les expériences ont montré que l'inversion d'un graben d'échelle crustale par réactivation de failles normales à fort pendage ne peut se faire qu'a obliquité a entre graben et compression inférieure à 45°. L'inversion se soit par une partition de la déformation entre décrochement sur le normales héritées et chevauchement néoformés (a > 45°), soit par une réactivation des failles normales en chevauchements oblique (a < 45°). Lorsque la couverture est décollée du socle, le chevauchement du remplissage du graben sur les plates-formes est localisé sur les bordures. Cet effet est accentué par la présence de diapirs de bordure de graben lorsqu'ils existent. Cette analyse structurale détaillée, menée sur le "Broad Fourteens Basin", a ensuite été étendue aux autres grabens des domaines Centre et Sud de la Mer du Nord. L'ensemble des données cinématiques obtenues est utilisé pour proposer une interprétation géodynamique de l'inversion des grabens de la Mer du Nord en tant qu'e conséquence de la collision Alpine.
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Nalpas, Thierry. "Inversion des grabens du sud de la mer du nord. Donnees de sub-surface et modelisation analogique." Rennes 1, 1994. http://www.theses.fr/1994REN10085.
Full textAbstract:
Le concept d'inversion tectonique a ete introduit par les geologues petroliers de la mer du nord, pour traduire l'aspect anormal de grabens formant des hauts structuraux par rapport a leurs plates-formes. La comprehension de l'inversion des grabens est tres importante a la fois pour l'industrie petroliere, afin de mieux connaitre la genese et le piegeage des hydrocarbures, mais aussi pour la recherche fondamentale, quant a sa signification geodynamique. La zone d'etude consideree dans ce travail est le sud de la mer du nord, et plus particulierement le broad fourteens basin qui fait partie des grabens hollandais. Ces grabens se sont formes entre le trias et le cretace inferieur et ont ete inverses au cretace superieur et au tertiaire. L'analyse des donnees de sub-surface du b. F. B. A permis d'identifier les parametres les plus importants de l'inversion tectonique. Des modeles analogiques ont ete realisees pour etudier les effets de ces parametres sur le developpement des structures d'inversion. Les experiences ont montre que l'inversion d'un graben d'echelle crustale par reactivation de failles normales a fort pendage ne peut se faire qu'avec une obliquite , entre graben et compression, inferieure a 45. L'inversion se traduit soit par une partition de la deformation entre decrochement sur les failles normales heritees et chevauchement neoformes (>45), soit par une reactivation des failles normales en chevauchements oblique (<45). Lorsque la couverture est decollee du socle, le chevauchement du remplissage du graben sur les plates-formes est localise sur les bordures. Cet effet est accentue par la presence de diapirs de bordure de graben lorsqu'ils existent. Cette analyse, menee sur le b. F. B. , a ensuite ete etendue aux autres grabens de la mer du nord. L'ensemble des donnees cinematiques obtenues est utilise pour proposer une interpretation geodynamique de l'inversion des grabens de la mer du nord en tant que consequence de la collision alpine
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Zhang, Lin VanHoose David D. "Could sub-debts of banks be potential tools for supervision? Empirical study with data set 1999-2007 /." Waco, Tex. : Baylor University, 2008. http://hdl.handle.net/2104/5183.
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Nalpas, Thierry. "Inversion des grabens du sud de la mer du Nord : données de sub-surface et modélisation analogique /." Rennes : Géosciences, Université de Rennes I, 1994. http://catalogue.bnf.fr/ark:/12148/cb358264817.
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Kaster, Brian C. "Magnetic Properties of Co1-xFexS2." Miami University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=miami1311874514.
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Rajalingam, Sankeerth. "Theoretical investigations of β-Ga2O3, β-Ga2Se3 and β-Ga2Te3 using ab-initio calculations." University of Toledo / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1331822465.
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Palcut, Marián. "Cation diffusion in LaMnO3, LaCoO3 and LaFeO3 materials." Doctoral thesis, Norwegian University of Science and Technology, Department of Materials Technology, 2007. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-1819.
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Young, Lindsay Kay. "Synthesis and Characterization of A2Mo3O12 Materials." University of Toledo / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1431517117.
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Kim, Sunphil. "P-type thermoelectric materials for waste heat recovery system: P-type Mg2Sn1-xSix and Pb1-x-yEuxSe:Nay." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1405345044.
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Durairaj, Vinobalan. "A SYSTEMATIC STUDY OF THERMODYNAMIC AND TRANSPORT PROPERTIES OF LAYERED Can+1(Ru1-xCrx)nO3n+1." UKnowledge, 2008. http://uknowledge.uky.edu/gradschool_diss/661.
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Orbital degrees of freedom play vital role in prompting novel phenomena in ruthenium based Ruddlesden-Popper compounds through coupling of orbits to spin and lattice. Physical properties are then particularly susceptible to small perturbations by external magnetic fields and/or slight structural changes. Current study pertains to the impact when a more-extended 4d Ruthenium ion is replaced by a less-extended 3d Chromium ion.
Perovskite CaRuO3 (n=∞) is characterized by borderline magnetism and non- Fermi liquid behavior – common occurrences in quantum critical compounds. Remarkably, Cr substitution as low as x=0.05 abruptly drives CaRu1−xCrxO3 from a paramagnetic state to an itinerant ferromagnetic state (MS~0.4μB/f.u.), where TC=123K for x=0.22. The Cr-driven magnetism is highly anisotropic suggesting an important role of spin-orbit coupling. Unlike other chemical substitutions in the compound, Cr does not induce any Metal-Insulator transition that is expected to accompany the magnetic transition. The results indicate a coupling of Ru-4d and Cr-3d electrons that is unexpectedly favorable for itinerant ferromagnetism, which often exists delicately in the ruthenates.
Bilayered Ca3Ru2O7 (n=2), an abode of huge anisotropy, exhibits a wide range of physical properties – Colossal Magnetoresistance occurring only when the spin polarized state is avoided, Antiferromagnetic-Metallic (AFM-M) state, Quantum Oscillations (periodic in 1/B and in B) that are highly angular dependent, to mention a few. Experimental results obtained so far provide a coherent picture illustrating that orbital order and its coupling to lattice and spin degrees of freedom drive the exotic electronic and magnetic properties in this Mott-like system. Transport and thermodynamic studies on Ca3(Ru1-xCrx)2O7 (0 ≤ x ≤ 0.20) reveal that AFM-M region is broadened with x that ultimately reaches 70K for x=0.20 (~8K for x=0). In this region, electron transport is enhanced and inhibited when B is applied along crystal’s respective axes, confirming an intrinsic half-metallic behavior. Moreover, the difference in coercivities of Ru and Cr magnetic ions pave way for the first-ever observation of a strong spin-valve effect in bulk material, a quantum phenomenon so far realized only in multilayer thin films or heterostructures. This discovery opens new avenues to understand the underlying physics of spin-valves and fully realize its potential in practical devices.
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Meyer, Tricia Lynn. "Structure, magnetism and transport properties of CaxSr1-xMn0.5Ru0.5O3 bulk and thin film materials." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1386001173.
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Sama, Varun. "Synthesis and Characterization of CexTi1-xO2 Nanostructures." Youngstown State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1380279795.
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Adkins, Drew David Wayne. "Studies of BaO – La2O3 – MgO – MnOn Compositional Space." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1440154953.
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Prades, Tena Marta. "Materiales ferroeléctricos basados en BaTiO3 y Ba2(Nd,Sm)Ti2Nb3O15. Caracterización eléctrica por espectroscopia de impedancia." Doctoral thesis, Universitat Jaume I, 2011. http://hdl.handle.net/10803/10552.
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Esta tesis versa en la síntesis, mediante métodos de baja temperatura(sol-gel y solvotermal), la caracterización y el estudio de las propiedades eléctricas, mediante Espectroscopia de Impedancia, de dos tipos de materiales ferroeléctricos: el óxido mixto de titanio y bario, BaTiO3(BT), dopado con diferentes iones (con estructura perovsquita), y la familia de compuestos Ba2LnTi2Nb3O15 (Ln = ión lantánido), con estructura de bronce de tungsteno tetragonal (TTB). Los principales resultados en el primer sistema estudiado (BT) es el descubrimiento de un nuevo fenómeno en materiales dopados con iones aceptores relacionado con la respuesta no-óhmica de su resistencia al aplicar un pequeño voltaje dc, tanto de la frontera como del interior de grano, lo que los hace prometedores para aplicaciones tales como dispositivos de memoria (similares a los memristores), de protección o sensores. Respecto al segundo sistema estudiado (TTB), el principal resultado fue la inusual histéresis térmica en la transición ferroeléctrica y la gran diferencia entre la temperatura de transición y la temperatura de Curie-Weiss. En todos los materiales se ha analizado en detalle la relación
existente entre estructura, composición y propiedad.
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Wittich, Knut [Verfasser]. "Neue Untersuchungen zur Synthese und Charakterisierung von Phosphaten mit ReO3-artiger Kristallstruktur mit einem Beitrag zu Silver-vanadyl(IV)-phosphat Ag6(VO)2(P2O7)(PO4)2 / Knut Wittich." Bonn : Universitäts- und Landesbibliothek Bonn, 2020. http://d-nb.info/120641796X/34.
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Steffens, Michael [Verfasser]. "Untersuchungen der Hyperfeinwechselwirkung in halbleitenden oder isolierenden Oxiden an den Beispielen HfO2, Ga2O3 und Al2O3 / Michael Steffens." Bonn : Universitäts- und Landesbibliothek Bonn, 2014. http://d-nb.info/1047622785/34.
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Sun, Yang. "Dielectric Properties of CaCu3Ti4O12 and Its Related Materials." University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1153884252.
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Wachtman, Jacob L. "Molecular Structure of (AsSe)1-x(Ag2Se)x solid electrolyte glasses." University of Cincinnati / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1250625212.
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