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SMA Observations of the Local Galaxy Merger Arp 299Sliwa, Kazimierz 10 1900 (has links)
<p>Ultra/Luminous infrared galaxies (U/LIRGs) are some of the most amazing systems in the local universe exhibiting extreme star formation triggered by mergers. Since molecular gas is the fuel for star formation, studying the warm, dense gas associated with star formation is important in understanding the processes and timescales controlling star formation in mergers. We have used high resolution (∼2.3”) observations of the local LIRG Arp 299 to map out the physical properties of the molecular gas. The molecular lines 12CO J=3-2, 12CO J=2-1 and 13CO J=2-1 were observed with the Submillimeter Array and the short spacings of the 12CO J=3-2 and J=2-1 observations have been recovered using James Clerk Maxwell Telescope single dish observations. We use the radiative transfer code RADEX to measure the physical properties such as density and temperature of the different regions in this system. The RADEX solutions of the two galaxy nuclei, IC 694 and NGC 3690, show two gas components: a warm moderately dense gas with T_kin ∼ 30-500 K (up to 1000K for NGC3690) and n(H2)~0.3-3×10^3 cm^−3 and a cold dense gas with T_kin~10-30 K and n(H2) > 3 × 10^3 cm^−3. The overlap region is shown to have a well-constrained solution with T_kin ∼ 10-30 K and n(H2)~3-30 × 10^3 cm^−3. We estimate the gas masses and star formation rates of each region in order to derive molecular gas depletion times. The depletion time of each region is found to be about 2 orders of magnitude lower than that of normal spiral galaxies. This can be probably explained by a higher fraction of dense gas in Arp 299 than in normal disk galaxies.</p> / Master of Science (MSc)
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Molecular Gas in Nearby Galaxies: Star Formation, Molecular Gas and Heating in the AntennaeSchirm, Maximilien R.P. 10 1900 (has links)
<p>The study of ongoing mergers is vital to understanding how intense star bursts are triggered, and how luminous infrared galaxies and ultra luminous infrared galaxies are formed. The Antennae (NGC 4038/39), at a distance of only 24.9 Mpc, represents the nearest example of a major merger between two gas rich spirals and provides us with a unique laboratory for studying molecular gas and star formation. I have obtained two fully sampled observations of the Antennae using the Herschel SPIRE Fourier Transform Spectrometer which I have supplemented with JCMT CO J = 3 − 2 observations. I detect CO, CI and NII emission throughout both the overlap region and the nucleus of NGC 4038. I measured the integrated intensity of the CO J = 4−3 to 8−7 and find that the overlap region is brighter for all but the J = 4 − 3 line. I find that, in the nucleus of NGC 4038, the CO spectral line energy distribution peaks at the 4−3 transition, while in the overlap region it peaks at the 3−2 transition. I modelled the CO emission using the non-local thermal equilibrium radiative transfer code RADEX coupled with a Bayesian likelihood code. I find a warm (Tkin > 600K) lower density (nH2 ∼ 200cm−3) component of molecular gas in the nucleus of NGC 4038, and similarly in the overlap region (Tkin > 600 K, nH2 ∼ 300cm−3) and find widespread evidence for multiple components of molecular gas throughout the system. These warm components in both regions correspond to ~ 1% of the total molecular gas. I find no evidence of x-ray dominated regions, cosmic rays or turbulent heating being the primary source of heating throughout the galaxy, while photodissociation regions or supernova and stellar winds may be the primary source of heating throughout the galaxy.</p> / Master of Science (MSc)
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ASTRO-ARCHAEOLOGY IN THE TRIANGULUM GALAXY: STUDYING GALAXY FORMATION AND EVOLUTION WITH THE GLOBULAR CLUSTERS AND STELLAR HALO IN M33Cockcroft, Robert 10 1900 (has links)
<p>The currently-favoured cosmological paradigm, Lamda-CDM, predicts that galaxies are built up from smaller galaxies in a bottom-up process known as hierarchical merging. Lambda-CDM is extremely successful for large-scale structures, but is less so for the detailed features of individual galaxies. We can study these features - the galaxies’ foundations and the remnants of the smaller components that built them - only in the closest galaxies in which we can resolve individual stars. In this thesis, we use data from the Canada-France-Hawaii Telescope (CFHT)/MegaCam as part of the Pan-Andromeda Archaeological Survey (PAndAS) to observe M33 (the Triangulum Galaxy) and the detailed features of its old stellar population. The study of these details is vital for our understanding of galaxy formation and evolution. We search for two types of components within the old stellar population: globular star clusters and the faint, diffuse stellar halo. We find only one new unambiguous outer halo star cluster, in addition to the five previously known in the M33 outer halo (r=10-50 kpc). A further 2440 cluster candidates are identified, which we analyse using two different types of simulated clusters. We are able to describe the type of clusters that are likely to remain hidden from our searches. Our study of a population of red giant branch (RGB) stars far from the M33 disk reveals a low-luminosity, centrally concentrated component which we interpret as the discovery of M33’s halo. It is everywhere in our data fainter than mu_V ~ 33 mag arcsec^−2, with scale length r_exp ~ 20 kpc, an overall luminosity not more than a few percent of the total luminosity of M33, and is possibly also not azimuthally symmetric. For M33 to have so few outer halo clusters compared to M31 and to have such a low-luminosity halo, with the possible asymmetry that we see, suggests tidal stripping of M33’s halo components by M31 - a view that is also favoured by the morphology of the disk substructure and recent modelling.</p> / Doctor of Philosophy (PhD)
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Analýza programů zahraniční rozvojové spolupráce Evropských společenství, role České republiky v rámci ZRS a možnosti účasti českých firem v programovacím období 2007-2013 / The Analysis of External Cooperation Programmes of the European Community, the role of Czech Republic in the external cooperation and the possible involvement of Czech firms throughout the years 2007 and 2013Kotiš, Tomáš January 2007 (has links)
The diploma thesis "The Analysis of External Cooperation Programmes of the European Community, the role of Czech Republic in the external cooperation and the possible involvement of Czech firms throughout the years 2007 and 2013" is basically about external aid and development programmes. The thesis is not just applied to participating development agencies in the Czech Republic or abroad, specific programmes and different ways of selection procedures which are published by the European Commission. Contribution of this thesis is a summary of various recommendations for new tenderers and gives us an unpublished look on statistical data regarding to the success of Czech companies in these procedures between years 2002 and 2008.
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Experimental and analytical investigation of reinforced concrete bridge pier caps with an externally bonded stainless steel systemKim, Sung Hu 07 January 2016 (has links)
This research is aimed at examining experimentally and analytically the behavior of reinforced concrete bridge pier caps strengthened with externally bonded reinforcement. In the experimental study, nine full-scale reinforced concrete bridge pier caps were built, externally strengthened with stainless steel reinforcement, and ten tested to failure. Load, deflection, and strain measurements were collected and two potential failure mechanisms were identified. In the analytical part of this work, mechanics-based equations were developed for calculating the shear strength of these types of structural elements when a diagonal shear crack is formed under loading. In addition, a combined strut-and-tie/truss model is proposed for determining the strength of reinforced concrete bridge caps with externally bonded reinforcement. Results from both experimental and analytical studies were compared and design recommendations are made for future adoption in bridge and building codes and specifications.
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Intergenerational care : exploring locus of control of a group of older people in their relationships with younger people / Lynné du PreezDu Preez, Lynné January 2014 (has links)
This study aims to explore locus of control and care from the perspective of older people (aged
60 years and older) in relation to younger people. Nine older people (8 female and 1 male)
living in the Vaalharts community in the Northern Cape province of South Africa participated in
the research.
From the perspective of older persons, locus of control in intergenerational relations
refers to how they subjectively evaluate the control they exert in relation to the younger
generation and the broader environment. The extent to which older persons subjectively evaluate
rewards and punishments from the interpersonal context and the broader environment will
inform the manifestations of control (internal or external). Internal locus of control refers to the
subjective evaluation by older people: that they are in control of their lives and the environment,
and that they can give and receive care. Older people with an external locus of control believe
that their lives and environment are uncontrollable and governed by external factors. Little
research has focused on locus of control and care in intergenerational relationships.
The research was approved by the human research ethical committee of the Faculty of
Health Sciences in the North-West University. Guidelines provided by the Health Professions
Council of South Africa for psychologists were followed during and after the research process.
A qualitative research approach was used. The participants were first selected by using
purposive sampling. Data were gathered over three days by using the Mmogo method®. The
older people were asked to make something using these materials to illustrate their experiences
or the way in which they experienced care in relationship to younger people. The participants
had the opportunity to explain their presentations and prompting questions were asked. The data
were analysed by using thematic and visual analyses. Trustworthiness was ensured by testing for
credibility, transferability, dependability and comformability.
The data revealed four themes. First, the older people expressed internal locus control in
relation to the younger people by accepting responsibility to care for them. In relation to the
environment, they used the land proactively. In doing so, they demonstrated the expectation of
being rewarded for their efforts: the land would provide them with the food as a reward. Second,
older people demonstrated strategies associated with internal locus of control in relation to the
younger people and the environment. They modelled expected behaviour, educated the younger
people and monitored their school work. It is only in relation to disciplining younger people that
older people demonstrated external locus of control. They sought external assistance to
discipline the younger people, which included appeals to the police, God and the researchers.
Third, the outcomes of the strategies to exercise control over the younger people were not
effective, as the subjective expressions of disappointment and the rejecting behaviour of the
younger people showed. Last, the older people tried to gain control over the younger people by
applying escalating attempts at corporal discipline. These findings, in contributing to an
understanding of locus of control and care, may be used to facilitate positive relationships
between younger and older people, which are vital for both generations‟ well-being. / MA (Research Psychology), North-West University, Potchefstroom Campus, 2015
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Intergenerational care : exploring locus of control of a group of older people in their relationships with younger people / Lynné du PreezDu Preez, Lynné January 2014 (has links)
This study aims to explore locus of control and care from the perspective of older people (aged
60 years and older) in relation to younger people. Nine older people (8 female and 1 male)
living in the Vaalharts community in the Northern Cape province of South Africa participated in
the research.
From the perspective of older persons, locus of control in intergenerational relations
refers to how they subjectively evaluate the control they exert in relation to the younger
generation and the broader environment. The extent to which older persons subjectively evaluate
rewards and punishments from the interpersonal context and the broader environment will
inform the manifestations of control (internal or external). Internal locus of control refers to the
subjective evaluation by older people: that they are in control of their lives and the environment,
and that they can give and receive care. Older people with an external locus of control believe
that their lives and environment are uncontrollable and governed by external factors. Little
research has focused on locus of control and care in intergenerational relationships.
The research was approved by the human research ethical committee of the Faculty of
Health Sciences in the North-West University. Guidelines provided by the Health Professions
Council of South Africa for psychologists were followed during and after the research process.
A qualitative research approach was used. The participants were first selected by using
purposive sampling. Data were gathered over three days by using the Mmogo method®. The
older people were asked to make something using these materials to illustrate their experiences
or the way in which they experienced care in relationship to younger people. The participants
had the opportunity to explain their presentations and prompting questions were asked. The data
were analysed by using thematic and visual analyses. Trustworthiness was ensured by testing for
credibility, transferability, dependability and comformability.
The data revealed four themes. First, the older people expressed internal locus control in
relation to the younger people by accepting responsibility to care for them. In relation to the
environment, they used the land proactively. In doing so, they demonstrated the expectation of
being rewarded for their efforts: the land would provide them with the food as a reward. Second,
older people demonstrated strategies associated with internal locus of control in relation to the
younger people and the environment. They modelled expected behaviour, educated the younger
people and monitored their school work. It is only in relation to disciplining younger people that
older people demonstrated external locus of control. They sought external assistance to
discipline the younger people, which included appeals to the police, God and the researchers.
Third, the outcomes of the strategies to exercise control over the younger people were not
effective, as the subjective expressions of disappointment and the rejecting behaviour of the
younger people showed. Last, the older people tried to gain control over the younger people by
applying escalating attempts at corporal discipline. These findings, in contributing to an
understanding of locus of control and care, may be used to facilitate positive relationships
between younger and older people, which are vital for both generations‟ well-being. / MA (Research Psychology), North-West University, Potchefstroom Campus, 2015
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LEGAL BASIS CONFLICTS REGARDING EU EXTERNAL ACTIONS : Upholding the key properties of the CFSP and the AFSJ provisions when negotiating and concluding international agreementsJonshult, Patrick January 2015 (has links)
Since the competence provided in the CFSP and the AFSJ areas in certain situation can overlap, issues have arisen in the recent case law and literature concerning the choice of legal basis. The provisions of the two policy areas concern important international areas and the institutional balance, which is based on what legal basis is chosen, leads to a number of institutional consequences such as division of power between the Member states and the Union’s institutions. The idea behind this paper is to display an ample and just picture of a complicated situation in order to highlight the issues at hand that have arisen due to the complexness of the legal framework. If one of the policy areas are chosen as the correct legal basis, different rules in the treaty applies, which leads to different distribution of power since different institutions in EU play different roles depending on legal basis. The purpose of this work is therefore to analyse the external dimension of the AFSJ and the CFSP rules and examine how the correct legal basis can be determined by the legislator at the same time as the Member States and the EU’s ability to fulfil their objectives and goals is not undermined.
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The Impact of Financial Statements For SEC Spin Off Entities On The Market's Ability To Anticipate Future EarningsStempin, Nancy 05 May 2016 (has links)
ABSTRACT
This study investigates the usefulness of spin-off historical and pro forma financial statements on the market’s ability to predict the firm’s future earnings. This study evaluates the spin-off historical and pro forma financial statements required for a Securities and Exchange Commission (SEC) regulation (Form 10-12(b). The study evaluates the question Are spin-off financial statements that reflect the firm’s adoption of the accounting required for the regulation (SEC form 10-12(b)) predictive of future earnings and thus useful? According to Statement of Financial Accounting Concepts No. 8 (SFAC8), the objective of general purpose financial reporting is that financial statements are useful to investors in making decisions about providing resources to the firm. Financial information is capable of making a difference in decisions if they have predictive value, confirmatory value or both. This is a quantitative, positivist, empirical archival study of final SEC Forms 10-12(b) for spin-off firms filed for listing on a public exchange of either NYSE or NASDAQ from the period of 2000 to 2014. The study evaluates if spin-off financial statements (historical and pro forma) are predictive, confirmatory or both. This study compares the performance of these companies to their peer group to assess if the results of this population are significantly different from the performance of the peer group in predicting future earnings. There were large variances between the historical, pro forma and Year 1 key financial statement elements. Variances ranged between 4% to over 500%. The difference in means in the population were significant between historical and pro forma net income as well as the change in shareholders equity and between historical and Year 1 shareholders’ equity. There was a significant difference in the leverage metric between historical leverage ratio and Year 1’s leverage ratio of the firms. The study found that the peer financial metrics were predictive of future earnings but the historical spin statements are not as predictive as their peer group. There was a significant difference in the predictability between the peer group and the historical spin metrics. The research supports the usefulness of the pro forma information. The research does not appear to support the usefulness of the historical information. Thus, the study provides the first empirical evidence that spin-off financial statements provide less information to the market. This is a new approach to study the application of accounting standards.
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The Dollars and Cents of Driving and Cycling: Calculating the Full Costs of Transportation in Calgary, CanadaDekker, Kaely January 2016 (has links)
Many cities across the globe are working to facilitate cycling as a sustainable transportation mode through changes to public policy and investments in infrastructure. Examining the costs and benefits of both driving and cycling using the cost benefit analysis (CBA) framework developed in Copenhagen provides an opportunity to identify private and social costs associated with these modes of transport with respect to environmental, social, and economic impacts. This paper outlines the methods used to calculate the per-kilometre costs of driving and cycling in Calgary, Canada, utilizing real-world data and methods from Canadian and global best-practice with the Copenhagen CBA framework as a guide. Transportation costs were calculated for travel time, vehicle ownership, health, collisions, air pollution, climate change, noise, roadway degradation, congestion, and winter maintenance for both driving and cycling. When the costs borne by both individuals and society are calculated for Calgary (in 2015 Canadian dollars) driving costs $0.83 per kilometre and cycling costs $0.08 per kilometre. When the social costs of transport are isolated, the cost of driving one kilometre is $0.10, while cycling one kilometre generates a net social benefit of $0.35. The results of this research show that the Copenhagen CBA framework can be applied in jurisdictions outside Denmark to calculate environmental, social, and economic costs of driving and cycling.
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