As part of the natural evolution and continued optimisation of their designs, current and future magnetic recording heads, used and proposed in technologies such as perpendicular recording, shingled magnetic recording and two-dimensional magnetic recording, often exhibit asymmetry in their structure. They consist of two semi-infinite poles separated by a gap (where the recording field is produced), with an inner gap faces inclined at an angle. Modelling of the fields from asymmetrical structures is complex, and no explicit solutions are currently available (only implicit conformal mapping solutions are available for rational inclination angles). Moreover, there is limited understanding on the correlation between the gap corner angle and the magnitude, distribution and wavelength response of these head structures. This research was therefore set out to investigate approximate analytical and semi-analytical methods for modelling the magnetic potentials and fields of two-dimensional symmetrical and asymmetrical magnetic recording heads, and deliver a quantitative understanding of the behaviour of the potentials and fields as functions of gap corner angles. The accuracy of the derived expressions (written in terms of the normalised root-mean-square deviation) was assessed by comparison to exact available solutions for limited cases, and to finite-element calculations on Comsol Multiphysics. Two analytical methods were derived to approximately model the fields from two-dimensional heads with tilted gap corners in the presence and absence of a soft magnetic underlayer (SUL): in the first method, the potential near a single, two-dimensional corner held at a constant potential is derived exactly through solution of Laplace's equation for the scalar potential in polar coordinates. Then through appropriate choice of enclosing boundary conditions, the potentials and fields of two corners at equal and opposite potentials and displaced from each other by a distance equal to the gap length were superposed to map the potential and field for asymmetrical and symmetrical heads. For asymmetrical heads, the superposition approximation provided good agreement to finite-element calculations for the limited range of exterior corner angles 0 from 0 (right-angled corner) to 45, due to the mismatch of surface charge densities on both poles for this geometry. For symmetrical head structures, the superposition approximation was found to yield remarkable agreement to exact solutions for all gap corner orientations from 0 (right-angled head) to 90 ("thin" gap head). In the second method derived in this research for modelling asymmetrical heads involved using a rational function approximation with free parameters to model the surface potential of asymmetrical heads. The free parameters and their functional dependence on corner angle were determined through fitting to finite-element calculations, enabling the derivation of analytical expressions for the magnetic fields that are in good agreement with exact solutions for all corner angels (0 to 90). To complement the two approximate methods for modelling the fields from asymmetrical and symmetrical heads, a new general approach based on the sine integral transform was derived to model the reaction of soft underlayers on the surface potential or field of any two-dimensional head structure, for sufficiently close head-to-underlayer separations. This method produces an infinite series of correction terms whose coefficients are functions of the head-to-underlayer separation and gap corner angle, that are added to the surface potential or field in the absence of an underlayer. This new approach demonstrated good agreement with finite-element calculations for sufficiently close head-to-underlayer separations, and with the classical Green's functions solutions for increasing separations. Using the derived analytical method and explicit expressions in this work, an understanding of the nature of the magnetic fields and their spectra as functions of the gap corner angles is gained. This understanding and analytical theory will benefit the modelling, design and optimisation of high performance magnetic recording heads.

Diploma work deal winth resolution automatic heads for high-speed shaping centers exchangas, so there was not those exchanges need of the human factor. It meaning that will using element automatic interface directly to programme as are Ball screw drives, ball rail systems, hydraulic element atc.

Neudert Pavel Goal of this work is preparing different variants of manipulator for changing the tool holder. The report contains choose of optimal solution and specific design solution of manipulator, including technical report and economical conclusions.

Background. The heads-up display (HUD) is a useful tool for displaying information to the player in a game, but the HUD is not a part of the game world. This could take away from the desired experience of the game and block important parts of the main action screen. To counteract this the HUD mostly occupies the edges of the screen and avoids drawing the player’s attention away from the main action scene except when it has important information for the player. Only having the HUD visible when it has important information to the player could remove the distraction of the HUD while keeping all the benefits of having one. Objectives. By using eye tracking to complement the HUD, the HUD can be invisible when the player does not use it, and change how the information is presented depending on where the player is looking. By creating a first-person shooter (FPS) game with a HUD complemented by eye tracking, then comparing it to how a normal HUD differed in terms of visibility and clutter, using a survey. Methods. The game was created using the Tobii Unity SDK and modifying the FPS demo scene. To create the gaze sensitive HUD three scripts were created to produce the finished result. Giving the HUD the ability to make all HUD elements invisible and able to appear after passing a specific value or when the element has new information, the HUD also has the ability to present information close to the player’s gaze point in the of notifications. The game was then presented to the participants in the form of two videos one using the normal HUD and one using the gaze sensitive HUD. After watching the partisans answered a survey related to the videos. Results. The gaze-based HUD was generally on par with the normal HUD. The most noticeable significant difference being that the normal HUDs ammunition counter and health bar was proffered over a less visible one. Conclusions. From the results gathered having a gaze-based HUD does not make it harder to notify the player of important information and dos not make the HUD less cluttered, compared to a normal HUD, but there is a difference between them.

The problem of this study is to determine if school climate perceptions are stable among the departmental subgroups of the high school. In addition, the study seeks to determine if the subject area of the department or patterns of leadership behavior of the department head (as perceived by teachers in the department) have a significant relationship to how teachers within a department perceive the climate of their school.

The purpose of this exploratory descriptive study was to provide a first step in clarifying the role of the high school academic department chair as it is currently practiced in the state of Oregon. The study examined from the administrative perspective the potential for the continued development of the educational leadership role of the department chair as an administrative resource for instructional improvement. A researcher-constructed questionnaire was used to gather data from 27 Oregon school district superintendents, 34 high school principals, and 118 high school department chairs from English, math, science, and social studies departments in those same high schools.

This thesis explores the user experience, potential and design principles of a HUD-based user interface in combination with interactive 360-degrees videos in nursing education. A HUD-based 360-degrees video was designed around a previously recorded scenario in an emergency room and user tests were conducted on nurse educators, working nurses and a nurse student.  Data from the user tests were gathered both through observations and interviews. The results show that participants' experience was overall positive and that the technology is seen as a realistic, interesting and valuable way to educate nursing students. Although no definitive design principles could be established for interactive 360-degrees videos, the result suggests that focusing on key design principles for multimedia learning may provide a better user experience. These principles include managing extraneous, essential and generative processing. / Detta examensarbete utforskar användarupplevelsen,potentialen och begränsningarna avett HUD-baserat användargränssnitt i kombination med interaktiva 360-graders videos inom sjuksköterskeutbildning. Detta gjordes genom att designa och utveckla en HUD-baserad 360-graders video och utföra användar tester på lärare inom sjuksköterskeutbildning, arbetande sjuksköterskor och en sjuksköterskestudent. Data från användartester samlades in genom observationer samt intervjuer. Resultatet visar att deltagarnas upplevelse överlag var positiv och tekniken ses som ett intressant och fördelaktigt sätt att undervisa sjuksköterskestudenter. Resultatet tyder också på att fokus på designprinciper inom multimedielärande kan bidra med en bättre användarupplevelse.

Earth Forms narrates and explains the Masters Project Exhibition by the same name. The sculptures included in the exhibition, Earth Forms, use a variety of personal symbols centered on one stylized human head. Some of the symbols included are antlers, branches, coral, leaves, plants and stones. Each of these symbols represents personal ideas of balance, growth and decay. They also represent the earth from which we are formed and the earth to which our bodies will return at the end of life.

This study examines the demographic characteristics of household heads in Salt Lake City, Utah at three points in its history: 1850, 1860, and 1870. Data was compiled on population growth, nativity, sex, age, occupation, wealth, and persistence from the United States Census for those years.The data shows that between 1850 and 1870 the makeup of Salt Lake City household heads changed dramatically from predominately American-born to predominately foreign-born. This change in the nativity of household heads over time significantly influenced several demographic characteristics including the location of immigrant settlement, occupational tendencies, and a high level of stratification of real wealth.

Purpose – The purpose of this study is to advance the literature on leadership by investigating the Full Range Leadership Model (FRLM) Bass and Avolio (1994-1997) in the context of the Colleges of Technology (CoTs) in Oman. Design/methodology/approach – In order to achieve the research objective and answer the research questions, a qualitative study was undertaken. The data was obtained by two methods, namely semi-structured interviews and focus groups. The semi-structured interviews were held with College Deans, Heads of Departments (HoDs) and teachers. The focus groups were carried out with seven groups of students from four CoTs. The data was analysed by a thematic approach, following the systematic steps outlined by Braun and Clarke (2006). Findings – Significant relationships were found between the transactional leadership approach and institutional theory (Isomorphism and legitimacy). The findings advance leadership knowledge by exploring the relationship between the components of FRLM, transformational and the transactional leadership approaches in hierarchical levels of leadership in the context of the CoTs in Oman. Both the Deans and the HoDs employed transactional leadership approaches to ensure compliance with the requirements of the Ministry of Manpower. Moreover, the study extended the leadership literature by exploring the interaction between leadership approaches of the Deans and the HoDs on multi-national teachers and Omani students. Originality/value – The originality of this research lies in its exploration of the relationship between transformational and transactional leadership approaches in hierarchical levels of academic leadership and its identification of the characteristics of effective leadership in HEIs from a multicultural perspective. / Ministry of Manpower (MoMP)