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Tyrimo tikslas – suprojektuoti šiaudų paruošimo įrenginį. Bakalauro baigiamojo darbo pirmoje dalyje išanalizuoti pagrindiniai šiaudų paruošimo įrenginio techniniai – ekonominiai rodikliai.Antroje darbo dalyje aprašyta gaminio paskirtis ir panaudojimo galimybės bei alternatyvos, išnagrinėti šiaudų paruošimo įrenginį sudarantys elementai: mazgai, mechanizmai. Atlikta šiaudų paruošimo įrenginio mazgų konstrukcijos variantų apžvalga – korpuso, būgno, pavarų mazgai, standartinių gaminių, konstrukcinių sprendimų palyginimas. Atlikti gaminio techniniai skaičiavimai (šiaudų paruošimo įrenginio pavaros kinematiniai skaičiavimai, šiaudų paruošimo įrenginio sukamųjų būgnų techniniai skaičiavimai, bei reikalingas kiekis šiaudų rulonų pasirinktai galiai išgauti, įrenginio kėlimo ąsos apkrovos leistinų įtempių skaičiavimas). Trečioje darbo dalyje išanalizuota trijų detalių technologiškumas. Parinkti detalėms ruošiniai, sudaryti technologiniai maršrutai, nustatyti apdirbimo operacijoms reikalingi įrengimai, apskaičiuotas jų kiekis. Atliktas užlaidų, pjovimo režimų nustatymas bei techninis normavimas.Ketvirtoje darbo dalyje pateikiama įmonių ir aplinkos saugos reikalavimai eksploatuojant įrenginį, jo ergonomiškumas ir įtaka aplinkai. Penktoje darbo dalyje atlikti ekonominiai skaičiavimai, kurių pagalba nustatyta ir pagrįsta šiaudų paruošimo įrenginio savikaina. / Research aim – to design a straw preparation equipment. In the bachelor's work first part there are analysis of the main straw preparation equipment technical-economic indicators.The second part describes the purpose and use of product options and alternatives, examines straw preparation equipment compilling elements: knots, mechanisms. Was made a straw preparation equipment knots construction options review - corps, drum, gear knots, standard products, comparison of construcion solutions. Was performed technical calculations of the product (straw preparation equipment gear‘s kinematic calculations, rotary drum technical calculations, and the required amount of straw rolls for the desired power extraction, equipment lifting eyelet load allowed stress calculation). The third part analyzed three parts fabrication. Were selected blank parts, created technological routes, determinated equipment necessary for manufacturing operations, calculated it‘s amount. Determinated an overlap, cutting mode setting and the technical rationing. The fourth part of the work presents companies and environmental safety requirements for maitaining the device, it‘s ergonomic and impact to environment. In the fifth bachelor‘s work part there are economic calculations, which assistance was determined and substantiated straw preparation equipment prime cost.

Lietuvos didelio meistriškumo slidininkų rengimas yra nemažai tyrinėtas, tačiau mokslinių tyrimų duomenų apie jaunųjų slidininkių rengimą, fizinių ir funkcinių galių kaitą dar nepakanka. Didelio meistriškumo ir jaunimo grupių slidininkių rengimo ir jų varžybinės veiklos specifiškumas yra aktuali sportinio rengimo problema. Todėl tobulėjant technologijoms, treniruočių metodikai, didėjant sportininkų fizinėms ir funkcinėms galioms yra svarbu ir toliau tirti Lietuvos didelio meistriškumo slidininkių rengimą ir ypač aktualu yra tirti jaunųjų slidininkių rengimo ypatumus Lietuvos sąlygomis ir šių tyrimų rezultatus palyginti su ankstesnių kartų Lietuvos slidininkių tyrimų duomenimis. Iškyla mokslinė problema, ištirti įvairių kartų Lietuvos slidininkių rengimo turinį, priemones ir metodus ir palyginti tyrimų duomenis tarpusavyje. Tyrimo tikslas ir uždaviniai - išanalizuoti ir palyginti įvairių kartų Lietuvos didelio meistriškumo slidininkių rengimą ir fizinių bei funkcinių galių kaitą metiniu treniruočių ciklu. Išanalizuoti olimpinės čempionės, trijų olimpinių žaidynių dalyvės ir jaunosios slidininkės rengimąsi metiniu treniruočių ciklu. Išnagrinėti Lietuvos slidininkių fizinių ir funkcinių galių kaitą metiniu treniruočių ciklu. Atskleisti Lietuvos slidininkių rezultatų kaitą metiniu treniruočių ciklu. LEU Sporto mokslo instituto laboratorijoje ir Lietuvos sporto medicinos centre buvo atliktas trijų Lietuvos įvairių kartų ir skirtingo amžiaus didelio meistriškumo slidininkių... [toliau žr. visą tekstą] / Preparation of Lithuanian elite skiers have been many analized, but there are not enough scientific data about physical and functional power alternation and preparation of young skiers. Elite and young skiers group specificity of preparation and competition activities is the actual sport's preparation problem. During modernization of technologies and training methodology, and also increasing sportsmen's physical and functional power, it is important to continue Lithuanian elite skiers preparation research and especially actual task is to analyse young skiers preparation features in condition of Lithuania and to compare research results with the previous generation skiers preparation characteristics. The problem of the research is to analyse Lithuanian different skiers generations training content, tools and methods of preparation, and to make the data comparison of different tasks. The aim and tasks of the research: to analyse and compare Lithuanian different generations elite skiers preparation and the dynamics of theirs physical and functional power at the annual training cycle. To analyse and compare the traning methods of threefold participant of Olympic Games and the young skier at the annual traning cycle. To analyse the changes of the Lithuanian skiers physical and functional power at the annual training cycle. To reveal the changes of Lithuanian skiers achievements at the annual training cycle. In LEU sports science institute laboratory and Lithuanian sports medical... [to full text]

The aim of this study is to investigate and understand the types, prevalence, and potential impact of teacher candidates’ struggles, as well as factors and contexts that may relate to the occurrence of struggles. The mixed methods study was carried out in three stages – qualitative, quantitative, qualitative – with teacher candidates and teacher educators from a large Canadian teacher education program as participants. Based on participants’ descriptions and experiences of struggles, I developed a taxonomy of 19 struggles, 10 of which were identified by both teacher candidates and their educators. The struggles included a wide range of behaviours, emotions, skills, and conditions. Teacher candidates also discussed which support systems they use in times of struggles, while instructors explained how they help teacher candidates who struggle. The study positions struggles in a broader and multilayered context that involves teacher candidates, their educators, the preparation program, its structure and elements, policies, social dynamics, and professional norms and expectations. The causes, triggers, consequences, and remediation of struggles are considered in relation to a combination of individual, institutional, and structural factors. The study has implications for teacher education programs, policymakers, and the teaching profession.

The legal system is responsible for the prosecution of an accused of sexual abuse of a child. The prosecution process is a complicated and an adult-orientated area. In South Africa sexual abuse of children is noticeably high. The sexual abuse of a child is traumatic and an intimidating experience for the child. The child is usually the only/main witness in a sexual abuse case. The child's testimony is the main aspect in the guilty ruling of an accused. Courts must apply special measures for child witnesses to testify optimally in court. Special measures include a court preparation process of the child witness. This study investigated the experience of the child witness of the court preparation process of Blue Downs court. The current programme was also described, and discussed in terms of current best practice programmes as described in literature. This study was based on a case study. The sexually abused child witness, the child's parent, the court preparation officer as well as the senior state prosecutor were interviewed. The most important findings of the study were that the court preparations process of Blue Downs court is successful and appropriated structured. The parent as well as the child experienced the programme as positive, and their anxiety levels were hereby lowered. A few training needs for court preparation officers, were identified. Court preparation processes need ongoing evaluation, to perform at its best and to be successfu1. Adjustments, such as more intensive training of the court preparation officers, are necessary to improve the process. / Thesis (M.A. (MW))--North-West University, Potchefstroom Campus, 2010.

This study examined the experiences of Aboriginal students at a university in Manitoba in terms of what supports kept them registered and what institutional factors contributed to their success. The aim of this research was to inform educators, administrators, and students of the needs of Aboriginal learners at the post-secondary level and what supports and experiences fostered these learners’ success. This research included the gathering of data from eight Aboriginal students who were registered in undergraduate university programs in Manitoba. The findings suggest that Aboriginal students who are assisted with setting clear academic and career goals prior to post-secondary enrollment, are provided with adequate academic preparation before entering post-secondary studies, are able to access the specialized approaches and supports currently available, and are able to form meaningful and reciprocal relationships with faculty and peers at university or college are more likely to succeed. The conclusions of the study are two: (1) that advisement dialogue prior to enrollment and upon registration needs to be expanded; and (2) that Aboriginal students must be provided with increased opportunities to develop self-esteem, confidence, and a sense of belonging.

The legal system is responsible for the prosecution of an accused of sexual abuse of a child. The prosecution process is a complicated and an adult-orientated area. In South Africa sexual abuse of children is noticeably high. The sexual abuse of a child is traumatic and an intimidating experience for the child. The child is usually the only/main witness in a sexual abuse case. The child's testimony is the main aspect in the guilty ruling of an accused. Courts must apply special measures for child witnesses to testify optimally in court. Special measures include a court preparation process of the child witness. This study investigated the experience of the child witness of the court preparation process of Blue Downs court. The current programme was also described, and discussed in terms of current best practice programmes as described in literature. This study was based on a case study. The sexually abused child witness, the child's parent, the court preparation officer as well as the senior state prosecutor were interviewed. The most important findings of the study were that the court preparations process of Blue Downs court is successful and appropriated structured. The parent as well as the child experienced the programme as positive, and their anxiety levels were hereby lowered. A few training needs for court preparation officers, were identified. Court preparation processes need ongoing evaluation, to perform at its best and to be successfu1. Adjustments, such as more intensive training of the court preparation officers, are necessary to improve the process. / Thesis (M.A. (MW))--North-West University, Potchefstroom Campus, 2010.

This research explored the efficacy of the Volunteer Return Preparation Program (VRPP) for low-income taxpayers. VRPP facilitates free tax return preparation assistance to low-income taxpayers through partnering organizations in local communities across the United States. The project consisted of the following objectives: 1) to examine the demographic and tax filing characteristics of taxpayers that use VRPP and how they compare to a random sample of non-users, 2) to identify the extent to which VRPP users and non-users claimed select tax credits and the extent to which the utilization is explained by profile characteristics, and 3) to assess neighborhood level factors that influence VRPP participation. By focusing on a government program that is structured to provide assistance to individuals that are economically disadvantaged, this research sheds light on the efficacy of the program, while explaining participation.

Increasing evidence supports the use of physical activity for modifying brain activity and overall neurological health (Hillman et al, 2008). Specifically, aerobic exercise appears to improve cognitive efficacy with regards to decisional oddball tasks shown through the P300, whose amplitude and latency is augmented (Magnié et al., 2000). Furthermore, the effects of an acute bout of aerobic exercise on cardiovascular function are well established and are sustained following exercise cessation. Based on these findings, we proposed that (1) an acute bout of exercise may modulate movement-related cortical excitability within motor areas and (2) that transient effects would be sustained as long as heart rate (HR) remained elevated. Subjects (n=23) were placed in a soundproof booth and instructed to perform a self-paced unimanual ballistic wrist extension every 3-6 seconds of the right wrist while holding a moveable handle. The motion involved a brisk contraction followed by relaxation and positional reset, collected continuously for approximately 8 minutes. Electroencephalography was used to measure movement-related cortical activity of the Bereitschaftspotential (BP) time-locked to onset of muscle activity associated with movement. The BP is a slow negative self-paced movement related cortical potential that precedes movement by approximately 1500ms. Current work commonly separates the BP into 3 main components early, late, and re-afferent Potentials. The early BP is representative of motor preparation of supplementary motor area (SMA) activity while the late component is representative of motor execution from primary motor cortex (M1). Early and late components are often distinguished by a a characteristic change in slope; where the early BP is a slow negative rise and the late components a steeper negative deflection beginning approximately 500ms prior to movement onset. Broken down further the late component consists of a portion of negative slope before giving rise to a peak approximately 100ms after movement onset known as the motor potential (MP). Following baseline measures, subjects performed 20 minutes of aerobic exercise at a moderate intensity (70% of age-predicted maximum heart rate) on a recumbent cycle ergometer. After the cessation of exercise, BP measures were recorded at two time points: immediately post-exercise (Post) and following a return to iv baseline HR (Post[Rest]) and two additional measures separated by 15 minutes each (Post[Rest2] and Post[Rest3]) which was, on average, 45 minutes after the cessation of exercise. Electromyography (EMG) was employed over the extensor carpi radialis muscle belly to describe muscle burst activity and onset characteristics. Results determined that Early but not Late BP was influenced by aerobic exercise. This early movement related cortical adaptation is indicative of enhanced processing within supplementary motor area. Moreover, this effect was sustained for up to an hour and 15 minutes following exercise cessation. This data is suggestive that aerobic exercise influences on motor related cortical excitability is not driven by an aerobic exercise effect and is more indicative of a delayed neurotransmitter effect.

Ongoing work in the laboratory of Professor Chris Backhouse is aimed at developing a portable and inexpensive lab on a chip instrument. A system capable of molecular biology protocols including sample preparation (SP), polymerase chain reaction (PCR), and melting curve analysis (MCA) would meet the requirements for point of care genetic analysis. The SP, PCR, and MCA modules were designed and tested on a standalone basis and then integrated for analysis of raw clinical samples. An automated XY stage was developed for magnetic bead-based DNA purification. In addition, a LED/CCD-based optical detection module was employed for real time PCR and MCA. Data analysis algorithms and protocols were implemented to remove noise and interpret data. This work culminated in proof of principle on-chip SP-PCR-MCA to detect ß2m DNA from human buccal cells in a modular and inexpensive system. / Biomedical Engineering