Darbe analizuojama Dusios ežero ties Meteliais vandens lygiai. Darbe buvo naudojami dviejų laikotarpių paros vandens lygių duomenys: 1945 – 1970 ir 1972 – 1999 metų, nes 1971 metais buvo įrengtas šliuzas reguliatorius. Vandens režimo pokyčiams palyginti naudotos DHRAM programinės įrangos 32 vandens lygių charakteristikos, kurių pagalba nustatyta, kokią įtaką padarė šliuzo reguliatoriaus įrengimas. Atlikus statistinę analizę nustatyta, kad 32 charakteristikos pagal vidutines vandens lygių reikšmes didžioji dalis yra padidėjusios, o pagal variacijos koeficiento reikšmes daugiausia yra sumažėjusios charakteristikos. Šliuzo reguliatoriaus įrengimo įtaka Dusios ežero hidrologiniam režimui maža ir jis didelės įtakos neturėjo. / The paper analyzes water levels in Dusia at Meteliai. The paper analyses two periods of daily water level dynamics under pre-impoundment (1945 – 1970) and after impoundment (1972 – 1999) conditions. The comparison of changes in water levels included DHRAM software 32 characteristics, which provided assistance to the impact made sluice regulator installation. Statistical analysis has shown, that the 32 characteristics of the average values of water levels in most of the increase, while the coefficient of variation of values mainly decrease in performance. Sluice controller installation influences the hydrological regime of lake Dusia small and he did not have a significant impact.

Viena iš pagrindinių priežasčių, keičiančių puslaidininkinių prietaisų parametrus, yra elektriškai aktyvūs defektai. Gilieji lygmenys sąlygoja krūvininkų gyvavimo trukmės mažėjimą medžiagoje, todėl blogėja krūvininkų surinkimo koeficientas puslaidininkiniuose detektoriuose, išauga energijos nuostoliai galios prietaisuose bei mažėja šviesos diodų našumas. Elektriškai aktyvių radiacinių bei technologinių defektų charakterizavimas yra aktualus vystant naujų, daugiasluoksnių puslaidininkinių struktūrų formavimo technologijas bei puslaidininkinių detektorių darbo parametrų optimizavimui. Šiame darbe buvo sukurta nesąlytinė laike išskirtosios spektroskopijos metodika giliųjų lygmenų puslaidininkinėse struktūrose įvertinimui kambario temperatūroje. Ši metodika įgalina sinchroniškai kontroliuoti gaudyklių aktyvacijos energiją ir krūvininkų gyvavimo trukmę. Sukurtas, išbandytas ir sukalibruotas mikrobangomis zonduojamo fotolaidumo kinetikų matavimo prietaisas, skirtas krūvininkų gyvavimo trukmės bandinio briaunoje ir plokštumoje įvertinimui bei technologinių procesų kontrolei. Šiais metodais buvo įvertinti defektų parametrai hadronais apšvitintame, įvairiais metodais užaugintame Si. Taip pat įvertinta legiravimo, metalų implantacijos ir apšvitinimų įtaka Ge struktūrų rekombinacijos charakteristikoms. Rekombinacijos parametrų kontrolei apšvitų stabdomais bei skvarbiaisiais hadronais metu buvo sukurta nuotoliniu būdu valdoma matavimų sąranga ir pritaikyta radiacinių defektų tipų ir jų... [toliau žr. visą tekstą] / Electrically active defects are one of the main obstacles to produce high efficiency semiconductor based devices. Deep levels determine the non-radiative recombination processes and deteriorate efficiency of light emitting diodes, charge collection efficiency of radiation detectors and determine high power dissipation of the power devices. This work is addressed to material science and development of contactless measurement technologies for non-invasive defects characterization and identification within modern structures of Si, Ge and GaN by developing the non-destructive techniques. Contactless time resolved techniques for deep levels spectroscopy has been approved for evaluation of defects parameters within irradiated Si and implanted Ge structures. Peculiarities of recombination parameters have been revealed in Ge structures dependent on doping and irradiation. The methodology and instrumentation for the control of recombination parameters during irradiations by penetrative and stopped protons have been proposed, designed and approved. Evolution of densities and of species of the radiation defects during irradiation has been examined and models for fluence dependent variations of density of extended defects are proposed. An impact of dislocation networks on recombination properties has been revealed within strained thin-layered SiGe structures and epitaxial GaN layers. The models for explanation of the interplay of defects in these structures have been proposed in this... [to full text]

No description available.

No abstract available. / Thesis (Ph.D.)-University of Natal, Durban, 1956.

The research focusses on computational analysis of vortex generation behind A-Pillar of simplified model derived from Jaguar XF that excludes air from the underside of vehicle. This vortex formation contributes in generating wall pressure fluctuations especially at speeds higher than 100km/hr. It is a collaborative work between Cranfield University and Jaguar Land Rover. Three dimensional pressure based incompressible flow using Large Eddy Simulation turbulence model is selected for computational analysis in FLUENT v14. This used high parallel computing systems available in Cranfield University. In the initial phase, three grid resolutions (coarse, medium and fine) were prepared in ICEM CFD with fine case consisting of 10 million cells. Qualitative analysis includes extraction of slices, 3-D and surface streamlines and pressure and velocity contours for capturing the unsteadiness due to the vortex formation over the front side glass surface. The iso-surface of Q captures the unsteadiness at the A-Pillar wake and side mirror wake over front side glass surface. It also reveals that the range of length scales captured were limited even at the finest grid resolution. Quantitative analysis compares the mean pressure (Cp) data with JLR results. Probes were located at 51 locations over the front side glass window that showed a good comparison; specifically for the fine grid; with maximum variation incurred at probes located in separation areas. For predicting the wall pressure fluctuations, a total of ten probes were located over the front side glass window surface. The surface pressure (static) data was recorded for 1 sec of flow-time and later imported in MATLAB for post-processing. The results obtained in 1/3rd octave band showed that the large scales were too energetic and small scales are not captured. However, comparing sound pressure levels with the Aero-acoustic Wind Tunnel (AWT); provided by JLR; it is concluded that either the grid is too coarse to resolve higher frequencies or the numerical modelling used is too dissipative to benefits the use of LES.

Syftet med denna studie är att utforska hur individer upplever sin prestation och själva inlärningssituationen då kunskap som ska läras in på ett språk ska återges på deras modersmål i form av tentamen eller i andra diskussionssituationer. Sex personer intervjuades om deras upplevelser att läsa kurslitteraturen på ett främmande språk och sedan återge den inlärda kunskapen på deras modersmål, i detta fall, svenska. Intervjumaterialet analyserades utifrån induktiv tematisk metod. Ur analysen framträdde tre huvudteman: förståelse av innehåll, förmågan att kunna uttrycka sig och slutligen, översättningsproblematiken. Den första två teman visade att prestation inte anses bli negativt påverkad av att den inlärda kunskapen ska återges på modersmålet. Tvärtom, kurslitteraturens språk förlorar betydelse så snart budskapet uppfattas av läsaren. / The aim of the current study is to explore how individuals see their performance and the learning situation itself when material presented in a certain language has to be recounted in the individual's mother tongue in the form of exams or discussion. Six people were interviewed about their experiences of reading textbooks in a foreign language and then recounting the acquired knowledge in their mother tongue, in this case, Swedish. Inductive thematic approach was used to analyse the interview data. During analysis three main themes emerged: understanding the content, the ability to express oneself and finally, translation-related problems. The first two themes showed that recounting acquired knowledge in the mother tongue is not considered to have a negative influence on performance. On the contrary, as soon as the reader comprehends the message the language of the textbook becomes irrelevant.

The aim of the thesis is to describe and analyse the population redistribution in Sweden at different geographical levels from the beginning of the 19th century to the end of the 20th century. The analysis is approached in three different ways. First, the redistribution at different geographical levels is analysed (papers I and II). Second, the changing accessibility between people (interpersonal accessibility) is analysed from the beginning of the 19th century to the end of the 20th century (paper II). Third, the impacts of fertility, mortality, internal migration, international migration and geographical variations in age composition on population distribution are analysed for the last decades (papers I, III and IV). Measurements of concentration have been used in order to analyse the changing population distribution. For the analysis of changing interpersonal accessibility the average population within the daily reach has been calculated for different times. In order to analyse the impacts of fertility, mortality, migration and geographical variations in age composition the actual redistribution of the population is compared with the redistribution generated by a number of counterfactual scenarios. To analyse the impact of international migration the changing distribution of the population in different immigrant groups is compared to the distribution of the Swedish population. Some conclusions drawn from the thesis are: 1. There is no overall trend in the population redistribution towards either concentration or dispersion. The redistribution pattern depends on the time perspective and the geographical level chosen. The population has been both concentrated and dispersed since the beginning of the 19th century. This applies to all investigated geographical levels. In the five identified phases of the redistribution the most common pattern is that concentration and dispersion of the population exist simultaneously on different geographical levels. The total effect of the redistribution between 1810 and 1990 is that today the population is more dispersed at macro-regional level, while it is more concentrated at local and regional level. 2. Based on assumptions about the daily reach, an average person today has access to about 100 times more people locally compared with the beginning of the 19th century. The most important process for the increased accessibility has been the redistribution of the population. The process that has had the least impact is the assumed increase in daily reach. However the importance of the investigated processes changes over time. Since 1950 the increasing reach has been the most important process. However, the rate by which interpersonal accessibility increases has slowed down since 1950. 3. The main demographic factor behind the redistribution since 1970 is the geographical differences in age composition and its effects on the natural population change. It is demonstrated that this factor lies behind the trend towards increasing concentration in Sweden, while the impact of migration affects the fluctuations from this trend to a greater extent. 4. The study shows that immigration concentrates the population, while the internal migration during the 1970s and periodically during the 1980s dispersed the population. However during the 1990s the internal migration has had a concentrating effect on the spatial distribution of the population. / <p>Diss. (sammanfattning) Umeå : Umeå universitet, 2000, härtill 4 uppsatser</p> / digitalisering@umu

This study surveyed Teachers of the Deaf in New Zealand who worked with a year 4 or year 8 student in 2006. The aim was to establish which assessments these teachers used and the extent to which the assessments influenced the IEP process and the teacher’s daily practice. The question was raised as to which assessments might provide reliable valid data to track the development of deaf and hearing-impaired students in New Zealand. The key findings from the study included that Teachers of the Deaf use assessments commonly used in deaf education more often than classroom assessments, but do make significant use of running records as well. There were differences between the two Deaf Education Centres use of assessment, and also disparity in the ways teachers arrive at assessment decisions such as allocating a curriculum level to a learning area. There was variance between the assessments used by a Teacher of the Deaf working in a satellite classroom, and the assessments completed by itinerant Resource Teachers of the Deaf. There appeared to be deaf students on Resource Teacher of the Deaf caseloads who were not assessed in mathematics by either the class teacher or the Teacher of the Deaf and the level of support by Teachers of the Deaf in mathematics is low. From within the complex picture of the assessment landscape for deaf students there are a number of signposts for future direction suggested by this study. These are: the need for a national assessment policy for deaf students; the need for data to be gathered nationally about the achievement of deaf students; sustained professional development around Teacher of the Deaf, common classroom assessments and national assessment tools; a closer look at the marking guidelines for Formal Retells and the need for student self-assessment practices to be further encouraged.

With the rise of new technologies, geographical and political boundaries between companies are disappearing. Managers within multinational organizations are faced with the challenge of adapting to new paradigms of leadership while leading employees who may share different backgrounds. With businesses becoming more globalized, it is important to know and understand how to lead and interact with people from other cultures. The purpose of the study is to explore and describe similarities or differences with managers from the United States and managers from Taiwan in relation to the 29 leadership traits overall as well as at individual management levels. As a result, this study also offers practical recommendations for managers of all levels and backgrounds to grow their international business opportunities through deeper knowledge of themselves and their international business partners.

Syftet med studien var att undersöka vid vilken situation som simmare använder visualisering mest och varför samt simmarnas visualiseringsförmåga. I studien deltog 278 simmare (15-30 år) i den kvantitativa delen och 3 simmare (17-23 år) i den kvalitativa delen av studien. De instrument som tillämpades till den kvantitativa delen var en konstruktion av SIAM och IPIES som tillsammans mäter idrottares visualiseringsförmåga och användning. Till den kvalitativa delen användes en semikonstruerad intervjumall. Resultaten från studien visade att det fanns några statistisk signifikant skillnad mellan högpresterade och lågpresterande simmare i visualiseringsförmåga. Resultaten visade att simmarena använder visualiseringen för att tänka positiv och fokusera samt förberedda sig inför nästa tävling. Dessutom sågs en tendens från den kvalitativa studien att högpresterade simmare hade bättre visualiseringsförmåga än lågpresterade och de använde visualiserings för att minska nervositet samt förbättra en prestation. Rekommendation med studien var att introducera och uppmuntra simmare att redan i lägre åldrar för visualisering som ett kompletterande träningsform till simningen, för att på så sätt förbättra simmares förberedelser inför tävling samt motivera till högre prestationsnivåer. / The aim of the study was to investigate at which situation swimmers use imagery the most, why, and the swimmers imagery ability. The study involved 278 swimmers (15-30 years) in the quantitative study, and 3 swimmers (17-23 years) in the qualitative part of the study. The instruments that were applied to the quantitative part were a construction of SIAM and IPIES which together measure the athlete's imagery ability´s and uses. For the qualitative part, a semi constructed interview was applied. The result of the study showed that there were statistically significant differences between high-performance and low-performance swimmers in imagery ability. The results showed that the use imagery to think positive and focused and prepare themselves before the next race. There was also a tendency from the qualitative study that high-performance swimmers had better imagery ability than lowperformance and used imagery to reduce nervousness and to improve the performance. Recommendation from the study was to introduce and encourage swimmers in lower ages to imagery as a complementary exercise for swimming, to improve the swimmer's preparation for the competition and motivate to higher performance levels