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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Aktivt lärande genom conveyance inom digitala spel : Spelares engagemang och påverkan av inlärningstekniker inom digitala spel

Christersson, Erik January 2012 (has links)
I detta arbete jämförs explicit och förmedlande (conveyance) inlärningsteknik för kommersiella spel och undersöka hur de påverkar spelarens resultat samt kunskap om spelets struktur. Undersökningar från början av 1970-talet visar på hur aktivt lärande ökar deltagarens engagemang jämfört med vid passiv explicit inlärning. Mitt praktiska arbete består i att ta fram två olika inlärningsbanor, en för var teknik, och en utmaningsbana där spelaren får prova sina färdigheter.  Skapandet av den praktiska delen av examensarbetet har skett under praktik på Pieces Interactive i Skövde. Resultatet av studien indikerar att gruppernas inlärning är jämförbar, dock klarar personerna i den explicita gruppen uppgifterna snabbare, medan de i den förmedlande gruppen utforskar/förstår mer av spelet. Vidare forskning om förmedlande bandesign kan gynna spelbranschen, särskilt i utbildningssammanhang där syftet är att motivera deltagaren och stimulera till en djupare/intuitiv förståelse för uppgiften.
2

On-line Gap Measurement Techniques for Steel Mill Non-contacting Conveyance System

Yang, Yung-Yi 25 August 2009 (has links)
On-line gap measurement techniques for steel mill non-contacting conveyance system, which can supply accurate, rapid and high-sampling rate gap measurements, have been proposed. To realize the entire process, by considering the operational environment in a steel mill and combining with those available system dimension measurement instruments, an image-based scheme with proper image processing and parameter calibration process has been developed. The possible sources that affect the air-gap detection accuracies have also been thoroughly investigated, and a comprehensive measurement database and a recursive modification technique have been successfully established. In order to achieve stable control for site implementation, an integrated optical inspection system which combined with the high-speed rate line-scan camera has been designed. From the experimental results, the proposed system can both provide accurate gap values at the static state, and offer stable control operations at the dynamic state. It is believed that the proposed scheme provide innovated guidance for the related conveyance applications in the steel mill.
3

Socializacija, kaip lyčių vaidmenų perteikimas jaunesniosioms kartoms / Socialization as conveyance to transfer the roles of the gender to the cadency

Paškevič, Jolanta 16 August 2007 (has links)
Šiuolaikinėje visuomenėje egzistuojantis požiūris į lyčių vaidmenis priklauso nuo daugelio kultūrinių, ekonominių, politinių veiksnių. Sunkiausiai kelią į aktyvų gyvenimą skiriasi arabų šalių moterys, kur egzistuoja griežtas lyčių atskyrimas. Požiūris į lyčių vaidmenis skiriasi ir pačiose visuomenėse tarp atskirų socialinių sluoksnių, etninių grupių ir pan. Aktuali lieka vaidmenų kitimo problema ypač jaunose šeimose. Nemažai krizių kyla dėl sunkumų įsisavinant naujus vaidmenis. Bet kokiam socialiniam vaidmeniui įsisavinti reikia laiko, kad galėtų suvokti jo ribas, vaidmenų sąlygojamas pareigas ir teises. Per daug greitas vaidmenų įsisavinimas, nespėjant suvokti jo esmės, sukelia krizes. Kuriant šeimą socialinių vaidmenų kitimas atrodo taip: jaunuolis - vyras- tėvas, mergina- žmona- motina. Pereiti nuo vieno vaidmens prie kito reikia laiko, todėl labai svarbus jaunimo ugdymas, jo ruošimas tam tikriems vaidmenims šeimoje. Šiuolaikinėje visuomenėje, vykstant šeimos transformacijai, labai svarbi tampa santykių tarp lyčių kaita. Lietuvos Respublikos Konstitucijos 29 straipsnis skelbia, kad žmogaus teisių negalima varžyti dėl jo lyties ( Lietuvos Respublikos Konstitucija, 2002 ). Tačiau realiame gyvenime moterys dažniau susiduria su nelygybe. Visuomenės nuomonė lemia mūsų elgesį. Vaikas, mokydamasis kalbėti, galvoti, jausti perima jo aplinkai būdingus kultūrinius požiūrius ir vertybes- jie tampa jo paties nuomone, vertybėmis... [toliau žr. visą tekstą] / Contemporary conception of human social development is based on the principle of conceding equal possibilities for all members of society. The problems of sexual equality, the assurance of equal possibilities for males and females are discussed in the press, in the works of sociologists and psychologists. The 29th article of the Constitution of Lithuanian republic announces that the human rights can not be restricted due to their sexes. However, in real life we usually come into collision with inequality. It is especially urgent in families. Frequently wives work hired labour and do more house-works than their husbands. Therefore, investigations related with the distribution of roles between men and women in families become urgent. The aim of this master's paper - is to analyze the formation of regulations of sexual role distribution and to elucidate, which attitude to the distribution of sexual roles in families prevails in younger genders and what influences the formation of the attitude of younger generations. Existing view to the sexual roles in families in contemporary society depends on many cultural, economical and political factors. After the Soviet dictatorship had failed in Lithuania, most of the women, having felt free and enable to choose, thought that they would be satisfied with the role of a housewife. After a decade had passed, this opinion changed. Women began to seek for losing touch with the house-works, for professional perfection. This view is... [to full text]
4

Modelling and design of a general purpose, vertical shaft conveyance, all level docking device / Adriaan Johannes Hendrikus Lamprecht

Lamprecht, Adriaan Johannes Hendrikus January 2015 (has links)
Deep level mining is widely practised throughout South Africa, particularly in the gold sector, where the extraordinary depths of vertical hoisting present an array of challenges. The accurate and secure positioning of a conveyance next to a station has been and continues to be one of the unresolved challenges that have led to many serious injuries and equipment damage. The literature study presented in this dissertation highlights some of the complexities associated with properly docking a conveyance and investigates some current, proposed and similar systems to address the issue. From the study it was found that no satisfactory device existed prompting a systematic design of a conveyance arresting device capable of securing a conveyance in a vertical shaft at any level. Proper definition of the system requirements was obtained and summarised into 16 groups. The system requirements play an important role in the design process by setting the direction but also featuring in concept screening and evaluation. In order to generate concepts a variety of creativity inspiring techniques were employed facilitating a systematic search for a solution. Application of the techniques, Brainstorming, Synectics, TRIZ, 2500 Engineering Principles, Sourcebooks and a Morphological chart resulted in the synthesis of 9 concepts. Screening and evaluation was performed on these concepts and the most suitable concept identified. The proposed concept is a simple system where two sets of beams are extended into the shaft in order to have the conveyance settle onto the supporting shaft steelwork. Once the conveyance came to a rest on the steelwork a second set of beams are extended beneath the steelwork to positively lock the conveyance in position. This required the geometric design of the system to ensure adequate strength to satisfy a factor of safety of ten. Design decisions were made on the section properties of the clamp beam by comparing a solid section and a box section. A supporting frame is used to guide the beams, with consideration given to the most appropriate method of attaching this support frame to the conveyance. The first choice was to have the beams extend from the rear of the conveyance but due to the moments and forces involved the conveyance roof structure could not support this configuration. The support frame was instead affixed directly to the conveyance Transom. In order to support the findings of the conventional calculations performed on the system components the system was subjected to finite element analysis. The results obtained from the simulation corresponded well for the simple components and varied somewhat in the more complex shapes attributed to the assumptions made to ease the conventional calculations. Weight and reliability in a harsh shaft environment was identified as critical design parameters and motivated the use of exotic high strength materials. The high strength of the materials made is possible to design a system with practical dimensions of adequate strength supported by the conventional and modelled calculations. Even though high strength materials were used in the design the overall system weigh is dissatisfying. A potentially successful and practical device was designed but certain factors such as weight, cost, conveyance structure and infrastructure modifications threaten the implementation of the design. This dissertation sets a sound foundation for future development and the continued search for a practical simple solution to this age old challenge. / MIng (Mechanical Engineering), North-West University, Potchefstroom Campus, 2015
5

Modelling and design of a general purpose, vertical shaft conveyance, all level docking device / Adriaan Johannes Hendrikus Lamprecht

Lamprecht, Adriaan Johannes Hendrikus January 2015 (has links)
Deep level mining is widely practised throughout South Africa, particularly in the gold sector, where the extraordinary depths of vertical hoisting present an array of challenges. The accurate and secure positioning of a conveyance next to a station has been and continues to be one of the unresolved challenges that have led to many serious injuries and equipment damage. The literature study presented in this dissertation highlights some of the complexities associated with properly docking a conveyance and investigates some current, proposed and similar systems to address the issue. From the study it was found that no satisfactory device existed prompting a systematic design of a conveyance arresting device capable of securing a conveyance in a vertical shaft at any level. Proper definition of the system requirements was obtained and summarised into 16 groups. The system requirements play an important role in the design process by setting the direction but also featuring in concept screening and evaluation. In order to generate concepts a variety of creativity inspiring techniques were employed facilitating a systematic search for a solution. Application of the techniques, Brainstorming, Synectics, TRIZ, 2500 Engineering Principles, Sourcebooks and a Morphological chart resulted in the synthesis of 9 concepts. Screening and evaluation was performed on these concepts and the most suitable concept identified. The proposed concept is a simple system where two sets of beams are extended into the shaft in order to have the conveyance settle onto the supporting shaft steelwork. Once the conveyance came to a rest on the steelwork a second set of beams are extended beneath the steelwork to positively lock the conveyance in position. This required the geometric design of the system to ensure adequate strength to satisfy a factor of safety of ten. Design decisions were made on the section properties of the clamp beam by comparing a solid section and a box section. A supporting frame is used to guide the beams, with consideration given to the most appropriate method of attaching this support frame to the conveyance. The first choice was to have the beams extend from the rear of the conveyance but due to the moments and forces involved the conveyance roof structure could not support this configuration. The support frame was instead affixed directly to the conveyance Transom. In order to support the findings of the conventional calculations performed on the system components the system was subjected to finite element analysis. The results obtained from the simulation corresponded well for the simple components and varied somewhat in the more complex shapes attributed to the assumptions made to ease the conventional calculations. Weight and reliability in a harsh shaft environment was identified as critical design parameters and motivated the use of exotic high strength materials. The high strength of the materials made is possible to design a system with practical dimensions of adequate strength supported by the conventional and modelled calculations. Even though high strength materials were used in the design the overall system weigh is dissatisfying. A potentially successful and practical device was designed but certain factors such as weight, cost, conveyance structure and infrastructure modifications threaten the implementation of the design. This dissertation sets a sound foundation for future development and the continued search for a practical simple solution to this age old challenge. / MIng (Mechanical Engineering), North-West University, Potchefstroom Campus, 2015
6

Reflexões sobre grupos e um estudo de caso utilizando o dispositivo do cartel / Reflections on groups and a case study using the cartel device.

Pessoa, Silvana Souza 28 March 2008 (has links)
O presente trabalho pretende estudar o cartel, órgão de base da Escola lacaniana, fora de uma instituição psicanalítica, comparando seu funcionamento às demais formações de grupos existentes, e se destina aos educadores e aos psicanalistas. O tema grupo é investigado nas obras de Freud, Anzieu e outros estudiosos da psicanálise. A primeira parte é dedicada ao estudo do conceito de grupo e das diversas formações coletivas espontâneas existentes, a partir da visão psicanalítica. A segunda parte analisa as propostas de grupos formados para a execução de um trabalho, desenvolvidas por Pichon, Bion e Lacan. O funcionamento, o papel da autoridade e os objetivos desses grupos - grupos operativos, grupos de suposição básica, de trabalho e o cartel - são investigados nos textos dos próprios autores. A terceira parte é dedicada à reflexão sobre a realização de um trabalho com cartéis, em um centro educacional na cidade de São Paulo, Brasil, com a participação de jovens entre 11 a 14 anos. Nela são realizadas algumas reflexões sobre o funcionamento desse dispositivo e a comparação com as outras formas de grupo estudadas. Finalmente, procede-se à reflexão da conseqüência deste estudo para a educação e a psicanálise, concluindo-se que esse estudo é relevante para educadores e psicanalistas que trabalham nos grupos para transmitirem as especificidades dos seus campos. / The purpose of this thesis is to study the cartel, the basic working unit of the Lacanian School, outside a psychoanalytical institution, and compare its mechanisms to those of the other existing group formations. This study is aimed primarily at educators and psychoanalysts. The group theme is investigated in the works of Freud, Anzieu and other psychoanalysis experts. The first section is dedicated to the study of the concept of group and of the several spontaneous collective formations from the psychoanalytical viewpoint. The second section analyzes the proposals developed by Pichon, Bion and Lacan involving groups formed for the production of a piece of work. The operation, the role of authority and the goals of such groups operational groups, basic supposition groups, work groups and the cartel are reviewed through the texts written by the authors themselves. The third section is dedicated to a reflection on the case study using the cartel, which was carried out in an educational center in São Paulo, Brazil, with the cooperation of teenagers aging 11 to 14. There are also some thoughts on the operation of such device and a comparison with the other group forms studied. Finally, a reflection follows on the consequence of the present study for education and psychoanalysis to conclude that such study is relevant for educators and psychoanalysts who use groups to impart the specific skills and knowledge of their own fields.
7

Factors influencing pre-hospital decisions not to convey : a mixed methods study

Black, Sarah Louise January 2017 (has links)
This study has used a mixed methodology to explore the impact of geographic, temporal and ambulance crew skill factors on ambulance clinicians’ decisions to leave a patient on scene after attending a 999 call. Four phases of work were undertaken using both qualitative and quantitative methods to build an understanding of the complex nature of pre-hospital clinical reasoning. A novel scale, the DMASC survey was developed, which indicated four factors influence decision-making in this context. More experienced staff scored significantly differently to other staff groups on the ‘Experience’ and ‘Patient characteristic’ subscales of the tool. Qualitative work explored these findings in more detail and five inter-related themes were identified, namely, ‘Communication’, ‘The three ‘E’s’, education, experience and exposure’, ‘System influences’, ‘Professionalism’ and ‘Patient characteristics’. The final phase of the study undertook to analyse retrospective call data from one large ambulance service over a one-year period. All of the five predictor variables, rurality, time of day, day of the week, patient condition and crew skill level, influenced the likelihood of conveyance. Of these the level of clinical skill of the first crew at scene was independently significant. The results of this work are discussed in relation to the strategic and operational context of NHS ambulance services. The thesis is structured as a series of papers yet to be submitted for publication. Although this confers a degree of repetition, it provides a logical analysis of the methods used to explore factors that may influence paramedic’s clinical decision making when deciding to leave patients at home following a 999-call attendance.
8

Reflexões sobre grupos e um estudo de caso utilizando o dispositivo do cartel / Reflections on groups and a case study using the cartel device.

Silvana Souza Pessoa 28 March 2008 (has links)
O presente trabalho pretende estudar o cartel, órgão de base da Escola lacaniana, fora de uma instituição psicanalítica, comparando seu funcionamento às demais formações de grupos existentes, e se destina aos educadores e aos psicanalistas. O tema grupo é investigado nas obras de Freud, Anzieu e outros estudiosos da psicanálise. A primeira parte é dedicada ao estudo do conceito de grupo e das diversas formações coletivas espontâneas existentes, a partir da visão psicanalítica. A segunda parte analisa as propostas de grupos formados para a execução de um trabalho, desenvolvidas por Pichon, Bion e Lacan. O funcionamento, o papel da autoridade e os objetivos desses grupos - grupos operativos, grupos de suposição básica, de trabalho e o cartel - são investigados nos textos dos próprios autores. A terceira parte é dedicada à reflexão sobre a realização de um trabalho com cartéis, em um centro educacional na cidade de São Paulo, Brasil, com a participação de jovens entre 11 a 14 anos. Nela são realizadas algumas reflexões sobre o funcionamento desse dispositivo e a comparação com as outras formas de grupo estudadas. Finalmente, procede-se à reflexão da conseqüência deste estudo para a educação e a psicanálise, concluindo-se que esse estudo é relevante para educadores e psicanalistas que trabalham nos grupos para transmitirem as especificidades dos seus campos. / The purpose of this thesis is to study the cartel, the basic working unit of the Lacanian School, outside a psychoanalytical institution, and compare its mechanisms to those of the other existing group formations. This study is aimed primarily at educators and psychoanalysts. The group theme is investigated in the works of Freud, Anzieu and other psychoanalysis experts. The first section is dedicated to the study of the concept of group and of the several spontaneous collective formations from the psychoanalytical viewpoint. The second section analyzes the proposals developed by Pichon, Bion and Lacan involving groups formed for the production of a piece of work. The operation, the role of authority and the goals of such groups operational groups, basic supposition groups, work groups and the cartel are reviewed through the texts written by the authors themselves. The third section is dedicated to a reflection on the case study using the cartel, which was carried out in an educational center in São Paulo, Brazil, with the cooperation of teenagers aging 11 to 14. There are also some thoughts on the operation of such device and a comparison with the other group forms studied. Finally, a reflection follows on the consequence of the present study for education and psychoanalysis to conclude that such study is relevant for educators and psychoanalysts who use groups to impart the specific skills and knowledge of their own fields.
9

DSP-based Drive Control of a Non-contacting Steel Plate Conveyance System

Chiang, Yi-Hsuan 26 July 2005 (has links)
The objective of this thesis is to report the concept of driving a non-contacting steel plate conveyance system with a DSP-based closed-loop control structure. The lift force of the system is first estimated from the magnetic equivalent circuit (MEC) analysis, and the estimation results have been verified through three-dimensional finite element analysis (3-D FEA). Based on the force calculations and the fuzzy control theory, a closed-loop control structure has been designed. Through accurate signal detections, a real-time lift force control of the conveyance system can be realized. Finally, by feeding AC sources with DC bias to the stator windings of the motor, the lift and propulsive forces can be supplied to the steel plate simultaneously.
10

Three-Dimensional Electromagnetic Force Analyses and Driver Design of A Non-Contacting Steel Plate Conveyance System

Yao, Sung-Yi 03 July 2002 (has links)
Based on the design concepts of linear induction motors, a non-contacting steel plate conveyance system for steel mill application has been constructed. To reduce the noise and friction from conventional roller conveyance system, the designed system is aimed to simultaneously provide adequate lift, propulsive, and guide forces to the steel plate. At first, the preliminary understandings of the characteristics of lift force have been gained through the simple magnetic circuit analyses, and together with other mechanical concepts develop the laboratory prototype. Then, through three-dimensional finite element analyses and state model developments, the system¡¦s static and quasi-dynamic/dynamic operational characteristics are investigated. Finally, the validity of this system has been verified by experimental measurement. Thus, the analyses and results of the experiment clearly show that the designed non-contacting steel plate conveyance system is certainly feasible.

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