Heart Rate Variability (HRV) analysis has been garnering attention from researchers due to its wide range of applications. Medical researchers have always been interested in Heart Rate (HR) and HRV analysis, but nowadays, investigators from variety of other fields are also probing the subject. For instance, variation in HR and HRV is connected to emotional arousal. Therefore, knowledge from the fields of affective computing and psychology, can be employed to devise machines that understand the emotional states of humans. Recent advancements in non-contact HR and HRV measurement techniques will likely further boost interest in emotional estimation through . Such measurement methods involve the extraction of the photoplethysmography (PPG) signal from the human's face through a camera. The latest approaches apply Independent Component Analysis (ICA) on the color channels of video recordings to extract a PPG signal. Other investigated methods rely on Eulerian Video Magnification (EVM) to detect subtle changes in skin color associated with PPG. The effectiveness of the EVM in HR estimation has well been established. However, to the best of our knowledge, EVM has not been successfully employed to extract HRV feature from a video of a human face. In contrast, ICA based methods have been successfully used for HRV analysis. As we demonstrate in this thesis, these two approaches for HRV feature extraction are highly sensitive to noise. Hence, when we evaluated them in indoor settings, we obtained mean absolute error in the range of 0.012 and 28.4. Therefore, in this thesis, we present two approaches to minimize the error rate when estimating physiological measurements from recorded facial videos using a standard camera. In our first approach which is based on the EVM method, we succeeded in extracting HRV measurements but we could not get rid of high frequency noise, which resulted in a high error percentage for the result of the High frequency (HF) component. Our second proposed approach solved this issue by applying ICA on the red, green and blue (RGB) colors channels and we were able to achieve lower error rates and less noisy signal as compared to previous related works. This was done by using a Buterworth filter with the subject's specific HR range as its Cut-Off. The methods were tested with 12 subjects from the DISCOVER lab at the University of Ottawa, using artificial lights as the only source of illumination. This made it a challenge for us because artificial light produces HF signals which can interfere with the PPG signal. The final results show that our proposed ICA based method has a mean absolute error (MAE) of 0.006, 0.005, 0.34, 0.57 and 0.419 for the mean HR, mean RR, LF, HF and LF/HF respectively. This approach also shows that these physiological parameters are highly correlated with the results taken from the electrocardiography (ECG).

This thesis deals with control of linear bridge cranes using three selected methods. In theoretical part, it gives information about basic structure of each selected algorithm and basic mathematical relations. In the middle, control of algorithms is simulated using created simulation programs in MATLAB. After that, the algorithms are applied on laboratory model of linear crane and in the end all of them are evaluated according to achieved results.

In the field of singularly perturbed reaction- or convection-diffusion boundary value problems the research area of a priori error analysis for the finite element method, has already been thoroughly investigated. In particular, for mesh adapted methods and/or various stabilization techniques, works have been done that prove optimal rates of convergence or supercloseness uniformly in the perturbation parameter epsilon. Commonly, however, it is assumed that the exact solution behaves nicely in that it obeys certain regularity assumptions although in general, e.g. due to corner singularities, these regularity requirements are not satisfied. So far, insufficient regularity has been met by assuming compatibility conditions on the data. The present thesis originated from the question: What can be shown if these rather unrealistic additional assumptions are dropped? We are interested in epsilon-uniform a priori estimates for convergence and superconvergence that include some regularity parameter that is adjustable to the smoothness of the exact solution. A major difficulty that occurs when seeking the numerical error decay is that the exact solution is not known. Since we strive for reliable rates of convergence we want to avoid the standard approach of the "double-mesh principle". Our choice is to use reference solutions as a substitute for the exact solution. Numerical experiments are intended to confirm the theoretical results and to bring further insights into the interplay between layers and singularities. To computationally realize the thereby arising demanding practical aspects of the finite element method, a new software is developed that turns out to be particularly suited for the needs of the numerical analyst. Its design, features and implementation is described in detail in the second part of the thesis.

Disertacijoje nagrinėjama aktuali lyčių aspekto poveikio ekonominei politikai vertinimo problema. Europos Sąjungoje lyčių lygybė pripažįstama viena iš pamatinių vertybių, o realus jos principų įgyvendinimas praktikoje bei suvokimas visuomenėje atspindi šalies pažangą ir išsivystymo lygį. Šio darbo tyrimo objektas – lyčių aspekto poveikis ekonominei politikai. Tyrimo tikslas – išanalizavus mokslinius požiūrius į lyčių lygybę ir lyčių aspekto integravimo strategiją, parengti lyčių aspekto poveikio vertinimo ekonominei politikai metodologiją, konceptualinį modelį, įvertinti lyčių aspekto poveikį makro ir mikroekonomikos lygiu bei pateikti rekomendacijas valstybinėms institucijoms įgyvendinant lyčių lygybės politiką. Disertacijoje atlikta kritinė lyčių lygybės teorijų ir strateginių lyčių lygybę įtvirtinančių dokumentų analizė bei įvertintos juose skelbiamos nuostatos, suformuota lyčių aspekto ekonominėje politikoje koncepcija, pasiūlyta lyčių lygybės tyrimo metodologija makro ir mikroekonominiu lygiu, sukurtas lyčių aspekto poveikio vertinimo ekonominei politikai konceptualinis modelis; pateiktas moterų rūpybos ekomikos indėlio į BVP įvertinimas; atlikta BVP, LR nacionalinio biudžeto ir užsienio prekybos analizė lyčių aspektu, lyčių padėties Lietuvos ir ES darbo rinkoje lyginamoji analizė bei pateiktas Lietuvos moterų verslo modelis. / The dissertation examines the topical issue of assessment of the impact of the gender aspect on economic policy. In the European Union, gender equality is recognised as one of the fundamental values, while the implementation of its principles in practice and the awareness of such principles in society reflect a country’s progress and level of development. The object of research of the dissertation is the impact of the gender aspect on economic policy. The aim of research is, upon analysing scientific approaches to gender equality and gender mainstreaming, to develop a methodology for assessment of the impact of the gender aspect on economic policy and a conceptual model, to assess the impact of the gender aspect at the macro- and micro-economic levels and to provide recommendations to authorities as regards the implementation of gender equality policy. The dissertation carries out a critical analysis of theories of gender equality and strategic documents stipulating gender equality and evaluates their provisions, formulates the concept of the gender aspect in economic policy, proposes a methodology of gender research equality at the macro- and micro-economic levels, develops a conceptual model of assessment of the impact of the gender aspect on economic policy; presents an assessment of the contribution of women’s care economy to GDP; carries out a gender analysis of GDP, the national budget of the Republic of Lithuania and foreign trade, a comparative analysis of the gender... [to full text]

Darbe aptarta Po Kioto klimato kaitos globalinė problema bei elementai, skirti jos apsaugai. Nagrinėjami pasaulio pasiūlymai dėl Po Kioto klimato kaitos. Analizuojami klimato kaitos švelninimo rėžimų apribojimai Lietuvai. Atlikta atskirų ekonomikos sektorių klimato kaitos politikos SSGG analizė. Nagrinėjama šiltnamio dujų dinamika skirtinguose ekonomikos sektoriuose. Remiantis struktūriniu darbo modeliu, ištirta, kad klimato kaitos švelninimo įsipareigojimai iki 2020m. sumažinti ŠD emisijas 20% ir 30% lyginant su 1990m Lietuvoje dvigubai didins elektros kainas, BVP augimas sulėtės 2-3%. Tai patvirtina bendrą darbo hipotezę. Naudingiausios bei reikalingiausias priemonės klimato kaitai švelninti turi būti įgyvendinamos energetikos sektoriuje: Energijos taupymas, Atsinaujinančių išteklių naudojimas energijos gamyboje; technologijų inovacija bei modernizavimas. Atsinaujinančių išteklių naudojimas energijos gamyboje bendrai teigiamai įtakotų Lietuvos ekonominę būklę, nors didintų elektros kainas. / There is a discussion of global Post Kyoto climate change problem and elements of its protection. There is an analysis of world suggestions for Post Kyoto climate change. There is analysis of Post Kyoto climate change mitigation regimes for Lithuania. There is performed SWOT analysis of climate change politics in different economics sectors. Dinamics of greenhouse gases in different sectors is provided. According to structural model of the work it was investigated that climate change investigation methods till 2020 will minimize the emissions of GHGs 20% or 30% comparing with 1990 will double the prices of electricity and the growth of GDP will be less 2%- 3%. These things affirm the hypothesis of the work. The best means for climate change mitigation should be applied in the sector of energy: the saving of Energy, the use of recommense reserves in technology; the inovation and modernisation of technologies. The use of recommense reserves for the producing of energy would have positive influence for the economy of Lithuania despite the fact of growing prices of eletricity.

Vykdydami savo veiklą bankai susiduria su įvairia rizika, susijusia su lūkesčiais, kad gaunama grąža kompensuos prisiimtą riziką. Bankų veiklos rizikingumą sustiprina ne tik vidinės bankų valdymo klaidos, bet taip pat ekonomikos svyravimai arba verslo ciklai. Ekonomikos augimo laikotarpiu bankai optimistiškai vertina skolininkų ateities perspektyvas ir todėl vykdo liberalią kreditų teikimo politiką. Prasidėjus ekonomikos kritimui, sulėtėjus pinigų srautams, bankų rizikingumas išauga, tai reikalauja didesnių atidėjinių, rezervų ir aukštesnio kapitalo lygio. Problemos aktualumą patvirtina ir paskutinė finansų krizė, kuri yra didžiausia nuo Didžiosios depresijos laikų. Finansų sektoriuje kilusi krizė atsiliepė „tikrajai“ ekonomikai ir sukėlė ekonominiams sunkmečiams būdingus padarinius. Todėl yra ieškoma būdų kaip tinkamai vertinant bankų riziką, laiku užkirsti kelią finansinėms krizėms, o kartu išvengti bereikalingų suvaržymų, stabdančių finansų sektoriaus ir viso ūkio plėtrą. Dėl visų minėtų priežasčių bankų rizikos problemos pastaruoju metu susilaukia daug mokslinės visuomenės, bankų priežiūros ir pačių bankų dėmesio. Darbo objektas – pasirinktų, Lietuvoje veikiančių, komercinių bankų riziką atspindintys rodikliai ir jų ryšys su verslo ciklu. Darbo tikslas – ištirti verslo ciklo poveikį bankų rizikai. Darbo tikslui pasiekti, darbe numatoma išspręsti šiuos uždavinius: • Išskirti bankų rizikos šaltinius; • Išanalizuoti kaip bankų rizika pasikeičia, kintant ekonominėms sąlygoms... [toliau žr. visą tekstą] / Banks in the course of their work are confronted with various risks. That’s risks are associated with the expectation, that the return will compensate the risk assumed by bank. Risk in banking activities not only strengthens the internal management of a bank error, but also economic fluctuations or business cycles. In economic growth times, banks are optimistic about the future prospects of the borrowers and therefore banks acts a liberal supply of credit policies, reducing lending standards. When economy stat’s to fall, the cash flow of money will slow, bank risk profile increases, it requires larger provisions, reserves and a higher level of capital. The work issues confirms the relevance of the last financial crisis, which is the largest since the Great Depression. The financial sector crisis effected "the real" economy and financial crisis caused the specific effects of economic recessions. So it is looking for ways of properly assessing the risk of bank, and to prevent financial crises in time, to avoid unnecessary constraints hindering the financial sector and the economy development. For all these reasons, the banks' risk problems recently attracts many scientific societies, banking supervision, and most banks focus of attention. The object of work - the selection, the commercial banks, operating in Lithuania, risk-reflective indicators and indicators link to the business cycle. The aim of work - to explore the business cycle effects of bank risk. To achieve the aim of... [to full text]