M.A. (Social Work) / The importance of the role of the social worker in the Court in connection with the preparation of pre-sentence reports necessitated an investigation into the expertise with which these reports are being submitted to the Court. " The objectives of the study were to evaluate deficiencies as well as positive elements of pre-sentence reports prepared by social workers and, were necessary, to lay down guide lines to ensure that a- properly prepared and authoritative product could be presented to the user (the Court). During the investigation a qualitative approach was followed and the study can be described as exploratoryjdescriptive. Firstly, a study of literature was done through which deficiencies in and guidelines for pre-sentence reports were pointed out. Secondly, structured and semi-structured interviews were conducted with 23 interested parties. These interested parties were probation officers and supervisors of three public service departments. Regional Court Prosecutors and Magistrates of the Johannesburg Magistrate's Office, a State Advocate of the office of the public defender, and five legal practitioners who are regularly exposed to pre-sentence reports during proceedings for extenuation of sentence. The "purpose of the semi-structured interviews was to determine the SUbjective experience by interested parties of pre-sentence reports. A brief and structured interview schedule was utilised in order to gather certain general information which was useful for the interpretation of data. It was found that deficiencies and positive elements obtained from literature accorded to a large extent with the perception of interested parties of pre-sentence reports. After deficiencies and positive elements in pre-sentence reports had been abstracted, reasoned conclusions were drawn. In addition guide lines were drawn for the preparation and writing up of pre-sentence reports.

On étudie dans cette thèse la correspondance de Satake géométrique. Un premier résultat est l’identification de la forme d’intersection au travers de la correspondance de Satake géométrique. En effet elle est égale à la forme contravariante "tordue"par l’involution de Schützenberger. On fait alors une conjecture combinatoire afin de démontrer que la base de Mirkovic ́ et Vilonen est compatible avec l’involution de Schützenberger. On démontre cette conjecture dans le cas où l’algèbre de Lie est sl2. Les outils combinatoires développés pour démontrer cette conjecture permettent, en outre, de prouver que la base semicanonique duale coïncide, pour sl2, avec la base de Mirovic et Vilonen généralisée. / In this thesis we study geometric Satake correspondance. First we identify the intersection form throught the correspondance. It equals a contravariant form twisted by Schützenberger's involution. Then we use a combinatoric conjecture to demonstrate the compatibility of the Mirkovic and Vilonen basis with the Schützenberger involution. We demonstrate this conjecture for the sl2 case. The combinatoric tools created to demonstrate this conjecture allow us to demonstrate that the dual semicanonical basis semicanonique duale equals the generalized Mirovic et Vilonen basis.

Flowers, the sole natural source of pollen and nectar for bees, present many similar features, in colour, shape, size and scent, which facilitate pollinator attraction. This similarity among stimuli requires perception of commonality but also a capacity for differentiation between similar but different stimuli. While many flowers of a similar type will elicit approach and foraging, failure to access resources on any individual flower in an array (e.g. due to depletion) will not necessarily generalize and deter further foraging. Such conditions demand that bees respond to both the similarity and differences among stimuli which may share many common features but differ individually in available resources. Two questions are raised by this challenge and will herein be addressed: how do bees perceive and respond to ‘similar but different’ stimuli? And, how do bees use such cues to find rewarding flowers? Picture-object correspondence has not been previously specifically studied in invertebrates. The correspondence between picture-cue and object stimuli may offer a unique opportunity to trigger memory for corresponding targets while still retaining an important distinction between unrewarding cue and rewarding targets. Perception of pictures is not always perceived by animals as either the same as or equivalent to the intended subject. According to Fagot et al. (2000) the perceived relationship may result in confusion, independence or equivalence and is dependent upon experience. The objectives of this thesis are twofold: first, determine how bumblebees (Bombus impatiens) perceive the relationship between objects and corresponding pictures and secondly, to determine whether or not bees may be able to attend to and use pictures as cues while foraging. The correspondence of picture and object by bees was evaluated with four experiments of preference: (1) learned differentiation; spontaneous association to (2) colour, and (3) achromatic, impoverished images; and (4) learned picture cue use. Firstly, results show that bees do not confuse an object with a corresponding picture but nevertheless do perceive a relationship between them if colour cues are retained. Altered, achromatic images were not consistently treated as corresponding to coloured objects. Secondly, bees can learn to use a picture cue in a delayed matching foraging task. Results further suggest a role of three contributing factors in bumblebee picture cue use: (i) conditions of high inconsistency as to which target will be rewarding; (ii) stable target locations; and (iii) individual foraging experience. It appears that bumblebees can learn to use cues, in a delayed matching task, when the location of the corresponding target is known and stable, the individual bee has acquired some experience in successful foraging, and reward is otherwise unpredictable without the use of the cue. Bees may disregard secondary cues as noise under conditions of high target predictability whereby floral constancy or target perseveration may be most efficient, but attend to and learn such cues as signals if target reward is highly unpredictable. The conditions for this sensitivity may coincide with naturally occurring floral cycles.

Correspondence courses for credit were first offered at the University of British Columbia in 1949. Since that time there does not appear to have been any type of survey or evaluation made of the service. The present study was undertaken to provide information about the service as it now operates and to form the basis for further studies where these might be found necessary. There were serious limitations upon the study, chiefly through lack or inaccessibility of needed data. From that available, a twenty per cent sample was randomly drawn from the 895 registrations made during the academic year of September 1, 1961 to August 31,1962. A count was made of the total correspondence population of the year to ascertain the numbers of completions, withdrawals and drop-outs for each of the ten courses then being offered. Otherwise the study was based on data drawn from the sample. The completion rate was found to be 32.2 per cent, low when compared to a gross completion rate of nearly sixty per cent found for the member institutions of the National University Extension Association in a survey in 1956. Five of the ten courses had a completion rate of twenty-five per cent or less, while the highest was forty-six per cent. Over seventy per cent of the registrants were in the Faculty of Education, with about twenty per cent in the Faculty of Arts. These students were in their First to Fifth year of university study, with the majority being in the Third. The completion rate was lowest for the Second year students and increased somewhat with each subsequent year. Of those who were new at the University, barely a quarter finished. Over half the registrants stated their previous session had been a summer session, and just under a quarter stated a winter session. The completion rate for both was approximately thirty-two per cent. Those who registered within six months of a previous session were found to achieve a better completion rate than those who had been away longer. This reversed entirely for those who had been a-way more than six years, all who returned after a longer time finishing successfully. The majority of registrations took place between August and November, with the best completion rate for those in September. These fall registrants also showed a tendency to finish in a shorter time than those who registered in the winter months. In a distribution for the length of time taken, two peaks were found, a greater one for those finishing under a year, a lesser one for those finishing before the two-year time limit. Time taken appeared to make little difference to grades, except for a small drop for those who took longest. Men and women made approximately the same grades, but in general the women took considerably longer. The women achieved the higher completion rate, 34.6 per cent, to 26.2 per cent for the men. The correspondence courses went out to students in each one of the Census divisions of the province. Forty-two per cent resided in the heavily populated Vancouver and lower mainland area, and it was noted these had a low completion rate. Numbers in other areas were too small to give reliable estimates, but the tendency was a rough approximation of the proportion of the population in each area. The main conclusion was that the correspondence service is not up to the high standards being established for the rest of the university, though the quality of instructor is there and also the need. Suggestions for further studies and improvements were made. / Education, Faculty of / Graduate

Dataspaces aim to remove upfront cost in the generation of the schema mappings that reconcile schematic heterogeneities, and to incrementally improve the generated mappings based on user feedback. The reconciliation of schematic heterogeneities is a crucial step for translating queries between a mediating schema and data sources. The generation of schema mappings depends on the elicitation of conceptually equivalent schema constructs and information on schematic heterogeneities. Furthermore, many dataspace operations manipulate associations between schemas, for example for generating a global schema to mediate user queries. With a view to minimizing upfront costs associated with understanding the relationships between schemas, many schema matching algorithms and tools have been developed for postulating equivalent schema constructs. However, they derive simple associations between schema constructs, and do not provide rich information on schematic heterogeneities. Without manual refinement, the elicitation of conceptually equivalent schema constructs and schematic heterogeneities may create uncertainties that must be managed.The schematic correspondences captures a wide range of one-to-one and many-to-many schematic heterogeneities. This thesis investigates the use of schematic correspondences as a central component in a dataspace management system. To support query evaluation in a dataspace in which relationships between schemas are represented using schematic correspondences, we propose a mechanism for automatically generating schema mappings from the schematic correspondences. We then characterise model management operators, which can underpin the bootstraping and maintenance of dataspaces, over schematic correspondences. To support the management of uncertainty in dataspaces, we propose techniques for quantifying uncertainty in the equivalence of schema constructs from evidence in the form of similarity scores and user feedback, and provide a flexible framework for incrementally updating the uncertainties in the light of new evidence.

This study presents an investigation of ethnic discrimination in municipalities, by conducting a corresponding test, asking for information about available housing plots, and further examines if the municipalities are contributing to the ethnic discrimination in the housing market. The experiment was conducted by creating two fictitious couples, one Arabic and one Swedish, which was used in the emails, which then was sent out to all municipalities in Sweden. The corresponding test measured the callback rate, the time to receive a reply from the municipality and excluded auto generated replies from the municipalities. We present evidence of ethnic discrimination in the treatment of non natives, using the variable Reply, we found that the Arabic couple were being discriminated against on a 5 percent significance level, with them getting 8,62 percent less answers, Thus, the study's findings indicate that the Arabic couple is being disfavored, relative to the Swedish couple, when emailing municipalities. We conclude that municipalities, could be a contributing factor to the existing ethnic discrimination of non natives in the housing market.

archives@tulane.edu / There is a deep analogy between the theory of covering spaces and the theory offield extensions. Indeed, for many theorems about the Galois groups of field extensionsthere are analogous statements for the fundamental groups of covering spaces. Thepurpose of this thesis is to present an expository account of the connections betweenthese two useful concepts of algebra and geometry. / 1 / Dejun Zhang

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Explanations of why mathematics is useful to empirical research focus on mathematics' role as a representation or model. On platonist accounts, the representational relation is one of structural correspondence between features of the real world and the abstract mathematical structures that represent them. Where real numbers are concerned, however, there is good reason to think the world's correspondence with systems of real number symbols, rather than the real numbers themselves, can be utilized for our representational purposes. One way this can be accomplished is through a paraphrase interpretation of real number symbols where the symbols are taken to refer directly to the things in the world real numbers are supposed to represent. A platonist account of structural correspondence between structures of real numbers and the world can be found in the foundations of measurement where a scale of real numbers is applied to quantities of physical properties like length, mass and velocity. This subject will be employed as a demonstration of how abstract real numbers, traditionally construed as modeling features of the world, are superfluous if their symbols are taken to refer directly to those features. / Master of Arts

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