Sportinis rengimas – įvairiapusis sudėtingas edukacinis vyksmas, apimantis sportininko mokymą ir auklėjimą, jo gebėjimų, fizinių ir psichinių ypatybių tobulinimą, harmoningą asmenybės ugdymą, sveikatos stiprinimą, gerų sportinių rezultatų siekimą. Šiuolaikiniam tinkliniui būdinga didelė treniruotės krūvio apimtis ir intensyvumas. Baigiamojo darbo tema – 2009–2013 m. U21 stipriausių pasaulio tinklinio komandų varžybinės veiklos ir rungtynių trukmės analizė pasaulio čempionate. Tyrimo objektas: 2009 ir 2013 m. U21 stipriausių pasaulio tinklinio čempionato komandų varžybinė veikla ir rungtynių trukmės rodikliai. Tyrimo tikslas – išanalizuoti 2009 ir 2013 metų U21 stipriausių pasaulio tinklinio komandų varžybinę veiklą. Tyrimo uždaviniai: 1. Išanalizuoti 2009 ir 2013 metų U21 stipriausių pasaulio tinklinio komandų varžybinę veiklą. 2. Atlikti 2009 ir 2013 metų U21 stipriausių pasaulio tinklinio komandų rungtynių trukmės analizę. 3. Palyginti 2009 ir 2013 metų U21 stipriausių pasaulio tinklinio komandų varžybinės veiklos rezultatus. Analizavome 2009 ir 2013 metų U21 stipriausių pasaulio tinklinio komandų varžybinę veiklą. Buvo atlikta komandų rezultatyvumo ir varžybų trukmės rodiklių analizė. Rezultatams apdoroti buvo taikyta matematinė analizė (skaičiuojama aritmetinis vidurkis, standartinis nuokrypis, aritmetinio vidurkio paklaida). Nustatyta, kad didžioji dalis (44–49 proc.) rungtynių baigiasi rezultatu 3 : 0, o apie 25 proc. rungtynių – rezultatu 3 : 1, 3 : 2, tačiau... [toliau žr. visą tekstą] / Sports Training – diverse educational complex process involving an athlete's training and education, his skills, physical and mental characteristics of the development of harmonious personality development, health promotion, good sports performance objectives. Contemporary volleyball characterized by high training volume and intensity of exercise. The thesis topic – the analysis of duration of volleyball matches and competition effectiveness in 2009 and 2013 world youth (U21) volleyball championship. The object of the 2009 and 2013. U21 strongest volleyball world championship teams match practice and match expectancy. The aim – to analyze the 2009 and 2013 U21 world's strongest volleyball teams game activity. Objectives of the study: 1. Analyze the 2009 and 2013 U21 world's strongest volleyball team's game activity. 2. Carried out in 2009 and 2013, the world's strongest U21 volleyball teams match -cycle analysis. 3. Compare the 2009 and 2013 U21 world's strongest volleyball teams match practice results. We analyzed the 2009 and 2013 U21 world's strongest volleyball teams in the game activity. It was made a team's performance analysis, and event expectancy. Results of the process were applied to the mathematical analysis (arithmetic mean, standard deviation, error of the mean). It was found that the majority of the game (44–49 percent) finishes 3 : 0, and 3 : 1, 3 : 2 and ending close to 25 percent of all matches. However, different parts of the distribution of events differ... [to full text]

River environments are complex and dynamic ecosystems, and provide valuable ecosystem services such as clean water. The species rich riparian vegetation performs many important ecosystem functions such as reducing erosion and filter inputs from upland areas. Regulated flow regimes have decreased riparian plant species richness, cover and plant performance. To restore the integrity of riparian ecosystems, mitigation measures such as re-regulation of water-level regimes toward more natural seasonal fluctuations may be needed. The aim of this study was to assess potential responses of riparian plants to changes in water-level regulation in run-of-river impoundments to better match natural flow regimes. The elevational extent of plant species on riverbanks of two run-of-river impoundments in the Ume River were surveyed and their probability of occurrence along the gradient of inundation duration was modelled and compared to their distribution in the free-flowing Vindel River. Most species showed similar tolerance to flooding in the Ume and Vindel Rivers. Changes in elevational extent in response to three simulated environmental flow regimes were predicted by using the relationship between plant occurrence and inundation duration. A simulated spring flood and low water levels during the latter part of the growing season is predicted to result in the largest increase in elevational extent, with increases of 70-80% for several riparian species. However, only 47% of the riverbanks along run-of-river impoundments in the Ume River is deemed to be suitable for plant establishment, since many riverbanks are steep and devoid of fine-grained substrate as a result of erosion. / Älvmiljöer utgör komplexa och dynamiska ekosystem som tillhandahåller värdefulla ekosystemtjänster så som rent vatten. Den artrika strandvegetation bidrar till många viktiga ekosystemsfunktioner som närings- och giftupptag och till minskad erosion. Vattenregleringen med förändrade flödesregimer har minskat artrikedom, täckningsgrad och tillväxt av strandväxter. För restaurering av strandekosystemen kan omreglering till mer naturliga säsongsvariationer i vattenståndet vara nödvändigt. Den här studien syftade till att förutsäga hur utbredningen av strandväxter längs stränder i vattenkraftsmagasin potentiellt skulle förändras vid användande av miljöanpassade flöden för att mer likna naturliga flödesregimer i outbyggda älvar. Jag undersökte växternas utbredning i höjdled på stranden längs två magasin i Umeälven och beräknade sannolikheten för varje arts förekomst längs strandens översvämningsgradient. Av de arter som förekom i både Umeälven och den närliggande, outbyggda Vindelälven jämfördes växternas utbredningsgränser i respektive älv. De flesta arterna uppvisade liknande översvämningstolerans i Umeälven och Vindelälven. För att förutsäga förändringar i utbredning som respons på tre olika simulerade miljöanpassade vattenståndsregimer, jämfördes arternas översvämningstolerans vid nuvarade vattenstånd med simulerade vattenståndsregimer. En simulerad vårflod och lågt vattenstånd under sensommaren förväntas ge de största responserna i artutbredning med ökningar på 70-80% för ett flertal strandväxter. Endast 47% av älvstränderna i magasinen i Umeälven bedöms vara lämpliga för växtetablering eftersom stora delar av strandsträckorna är branta och saknar finkornigt substrat till följd av erosion.

Presently, owners are interested in evaluating the feasibility of investing in the construction of new building projects based on cost and time constraints. They need to therefore have an idea about the project construction costs, the time required to finish construction of a project in its conceptual phase, and about the implementation of feasibility study. Because due to associated risks, construction cost estimates and schedules are vital to any project. The research’s objective is to develop a methodology that can be used to create an integrated computer model that helps owners and designers generate construction cost estimates, and derive the baseline schedule for any proposed building project at its feasibility stage. All the relevant data used within the model is collected from the literature and is stored in comprehensive databases designed for this purpose. The data is based on 2011 RSMeans publications and consist of around 4,000 previously constructed projects. The model is developed in a Microsoft environment using Microsoft Excel 2007 and Microsoft Project 2007. This model uses deterministic and stochastic approaches to execute all necessary calculations for the conceptual cost estimate and baseline schedule. A deterministic approach relies on realistic data while a stochastic one relies on incorporating the uncertainty and risk available in calculating the cost and duration of any construction building project. The model is user friendly, flexible and executes all the necessary calculations quickly. The successful development of the model would help owners and investors identify the cost and baseline schedule of proposed projects at the early stages of the project life, so that they have an idea of the budget required for construction and the time needed to recover their investment.

Although several guidelines are available for designing observational procedures in both basic and applied settings, few researchers have experimentally examined and compared different direct observation methods. Such methods may have a direct impact on practitioners' ability to effectively assess strengths and challenges, set treatment goals, adjust intervention procedures, and monitor progress. The current study compared 1 and 5 min observations to 10 min observations throughout baseline and intervention phases of a parent training program for toddlers with autism. Results showed similarities with regards to variability, level, and trend in the 5 and 10 min data samples; however, clear differences were seen in the 1 min data sample, which typically showed very low occurrences of responding and displayed steady and flat trends. The findings have implications for the development of time-efficient direct observation procedures utilized in parent training programs for children with autism.

<p>This dissertation consists of three separate essays on job search and labor market dynamics. In the first essay, “The Impact of Labor Market Conditions on Job Creation: Evidence from Firm Level Data”, I study how much changes in labor market conditions reduce employment fluctuations over the business cycle. Changes in labor market conditions make hiring more expensive during expansions and cheaper during recessions, creating counter-cyclical incentives for job creation. I estimate firm level elasticities of labor demand with respect to changes in labor market conditions, considering two margins: changes in labor market tightness and changes in wages. Using employer-employee matched data from Brazil, I find that all firms are more sensitive to changes in wages rather than labor market tightness, and there is substantial heterogeneity in labor demand elasticity across regions. Based on these results, I demonstrate that changes in labor market conditions reduce the variance of employment growth over the business cycle by 20% in a median region, and this effect is equally driven by changes along each margin. Moreover, I show that the magnitude of the effect of labor market conditions on employment growth can be significantly affected by economic policy. In particular, I document that the rapid growth of the national minimum wages in Brazil in 1997-2010 amplified the impact of the change in labor market conditions during local expansions and diminished this impact during local recessions.</p><p>In the second essay, “A Framework for Estimating Persistence of Local Labor</p><p>Demand Shocks”, I propose a decomposition which allows me to study the persistence of local labor demand shocks. Persistence of labor demand shocks varies across industries, and the incidence of shocks in a region depends on the regional industrial composition. As a result, less diverse regions are more likely to experience deeper shocks, but not necessarily more long lasting shocks. Building on this idea, I propose a decomposition of local labor demand shocks into idiosyncratic location shocks and nationwide industry shocks and estimate the variance and the persistence of these shocks using the Quarterly Census of Employment and Wages (QCEW) in 1990-2013.</p><p>In the third essay, “Conditional Choice Probability Estimation of Continuous- Time Job Search Models”, co-authored with Peter Arcidiacono and Arnaud Maurel, we propose a novel, computationally feasible method of estimating non-stationary job search models. Non-stationary job search models arise in many applications, where policy change can be anticipated by the workers. The most prominent example of such policy is the expiration of unemployment benefits. However, estimating these models still poses a considerable computational challenge, because of the need to solve a differential equation numerically at each step of the optimization routine. We overcome this challenge by adopting conditional choice probability methods, widely used in dynamic discrete choice literature, to job search models and show how the hazard rate out of unemployment and the distribution of the accepted wages, which can be estimated in many datasets, can be used to infer the value of unemployment. We demonstrate how to apply our method by analyzing the effect of the unemployment benefit expiration on duration of unemployment using the data from the Survey of Income and Program Participation (SIPP) in 1996-2007.</p> / Dissertation

The hyperbolic relationship between power output and endurance time can be measured using all-out exercise. The aims of this thesis were to (i) assess whether the all-out test could be used under novel testing protocols to provide valid power-duration (P-D) parameter estimates; and (ii) attempt to elucidate the likely physiological composition of the P-D curvature constant. All-out tests were initiated from moderate-(M), heavy-(H) and severe-(S2 & S4) intensity ‘baselines’ (chapter 4). The work performed above end power (WEP) was not different to control under M or H conditions but was significantly, predictably reduced under the S2 & S4 conditions (control: 16.3 ± 2.2; M: 17.2 ± 2.4; H: 15.6 ± 2.3 kJ, P > 0.05; S2: 11.5 ± 2.5; S4: 8.9 ± 2.2 kJ, P < 0.05). The 3-min all-out test end power (EP) parameter was unaffected. Muscle glycogen may form part of the WEP. Type I (T1) and type II (T2) muscle fibres were depleted of their glycogen content prior to the all-out test (chapter 5). EP and WEP were unaffected by either T1 or T2 glycogen depletion. The all-out tests was conducted under hypoxic conditions alongside the criterion assessment of the P-D relationship (chapter 6). Normobaric moderate hypoxia caused a reduction in CP (control: 175 ± 25; hypoxia: 132 ± 17 W, P < 0.001) without affecting W′ (control: 13.2 ± 2.2; hypoxia: 12.3 ± 2.7 kJ, P > 0.05). The 3-min all-out test provided EP and WEP estimates, which did not differ to CP and W′ (control: EP 172 ± 30 W, WEP 12.0 ± 2.6 kJ; hypoxia EP 134 ± 23 W, WEP 12.5 ± 1.4 kJ, P > 0.05) providing the ergometer resistance was adjusted for the hypoxic conditions. Furthermore, a significant negative relationship was observed between %∆ ( O2peak – CP) and %∆W′ (r = -0.83, P < 0.001); thus, W′ may represent the relative ‘size’ of the severe-intensity domain. The all-out test was used to track training-induced changes in P-D parameters in response to 6-weeks of sprint or endurance training (chapter 7). EP & WEP were differently altered compared to CP and W′ following sprint training (CP 12 ± 9; EP -0 ± 9 % change; W′ -5 ± 25; WEP 11 ± 15 % change). The all-out test reliably tracked changes in CP and W′ following endurance training. In conclusion, the all-out test provides reliable EP and WEP values. Its validity is acceptable, but is perhaps affected by exercise training that is specific to the execution of the test. The W′ appears to be determined, to a large extent, by the relative size of the severe-intensity domain.

Due to widespread decentralization of spending responsibilities, increasing revenue power and borrowing capacity of sub-national governments, sub-national borrowing has become an increasingly important source of sub-national finance. While there are arguments for and against giving sub-national authorities room for raising their own financial resources, appropriate sub-national borrowing regulatory framework can reduce chances of defaults and fiscal crises. This dissertation investigates the effectiveness of sub-national borrowing regulations in maintaining fiscal sustainability. More precisely, it tests the hypothesis that is sub-national borrowing is restricted to financing capital investments (the “golden rule”), and if the sub-national governments are provided with some measure of revenue autonomy, then the sub-national borrowing should not endanger fiscal sustainability. Based on the sub-national government panel data for 57 countries between 1990 and 2008 and applying the system GMM estimator and the survival analysis, this dissertation provides support for this hypothesis. The results suggest that the “golden rule” is effective in maintaining fiscal sustainability at both general and sub-national government level. Sub-national tax autonomy, however, seems to have positive but very small marginal effect on fiscal sustainability. The obtained results also emphasize the risk of the soft budget constraint and the moral hazard. Significant central government financing may give encouraging signs to the sub-national governments to over-borrow and to expect being bailed out by the central government. The results obtained in this dissertation imply following policy recommendations. First, sub-national government borrowing does not have to endanger fiscal sustainability if the borrowing regulation framework is well designed and according to specific country circumstances. Second, reducing fiscal dependence on central government financing reduces the risk of moral hazard and improves the effectiveness of borrowing control in maintaining fiscal balance at the sustainable level.

Breastfeeding is an important and relatively affordable health promotion and disease prevention activity with positive health outcomes for both the women who breastfeed and the infants who receive human milk as their first source of nutrition. As these benefits are dose dependent, the duration of breastfeeding and exclusivity of breastfeeding are important in the development of these protective effects. The purpose of this study is to understand the process younger mothers, ages 18 to 24 years, undergo to be able to sustain breastfeeding for longer than most women their age breastfeed. Ten women, ages 21 to 24 years, participated in individual, in-depth interviews in this grounded theory study. Following the iterative process of data collection and analysis, focus of the interviews changed as the data analysis guided the data collection process. Data underwent open, focused, axial, and theoretical/selective coding. The analysis process resulted in the development of a middle-range, descriptive theory grounded in the data. Prolonged Breastfeeding Through Fierce Determination succinctly explains the central phenomenon, fierce determination, and the relationship it shares with the other concepts identified as important contributing factors as the women moved through their breastfeeding journeys. Facing and Deciding to Overcome Obstacles, influenced most heavily by fierce determination, exerted its influence upon the outcome of the theory, "Trucking Along", an in vivo code provided by Participant 10, which captured her ongoing breastfeeding even in the face of obstacles. Normalized Infant Feeding Method contributed to the participants' fierce determination. Availability of Support positively impacted the participants' ability to face and overcome their breastfeeding obstacles. Personal Agency had a reciprocal relationship with fierce determination and, like availability of support, also positively impacted their ability to face and overcome obstacles. The concepts within the theory were found to be congruent with a focused review of the literature around long-term goal achievement, healthful behavior adaptation, and breastfeeding. This study contributed to the breastfeeding literature, providing insight into how young mothers engage in prolonged breastfeeding.

This thesis investigates temporal characteristics of monosyllabic words (je, se, že) in semi-spontaneous dialogues and read speech. Our material consisted of two sets of recordings from six speakers (three men and three women). The speakers read a text first, and this reading was followed by a recording of a spontaneous dialogue. We investigated differences of temporal characteristics of monosyllabic words between the two types of speech. In addition, we also examined how these characteristics are affected by different variables, which included: position in a stress group, presence of stress, presence of pause and speaker's personality. It was found that the type of speech had a significant influence on duration ratio of sounds in examined words je, že. Word se remained unaffected by the type of speech and generally appeared as a very stable element. The type of speech also influenced variability in duration - this variability proved to be higher in spontaneous speech. The type of speech did not affect average duration of words je, se, že. Position in the stress group also proved to have a significant effect on duration of words. This effect was mainly caused by words which created isolated stress groups - words in such position had longer duration than words in other positions. For words je, se...

The study focuses on durational variation of segments in read speech of Czech and British speakers of English. The variation in segmental duration was examined in the speech of three Czech and three British speakers with respect to individual vowel and consonant categories. Furthermore, stress and intonation phrase boundary were explored as possible factors influencing segmental duration. The theoretical part of the study focuses on two main topics. The first is foreign accent with regard to accentedness, intelligibility and comprehensibility as well as in connection to its implications and factors which might influence its degree. The second part contains theoretical background about the time domain of speech concerning segmental duration in Czech and English, the area of rhythm, the importance of durational cues in perception and a short survey of factors reported to affect segmental duration. Czech accent in English and the importance of duration in foreign language are also covered. In the empirical part of the study, Czech speakers were found to miss the appropriate proportions between individual vowel categories and realize their long vowels as slightly too short. They lacked an adequate degree of durational contrast in stressed and unstressed vowels when compared to the British speakers. With regard...