A simple stand-alone Scanning Tunnelling Microscope has been designed and constructed with the aim of providing first stage toward an in-situ instrument for study of thin-film growth. It is functionally capable of STM operation (constant current, constant height, line test) and STS operation (I - V and dI/dv - V). This thesis describes mechanical design, electronic design, computer interfacing in hardware and software, and computer graphics, and presents the results of testing and some applications. The STM head mechanical design features a helical spring/diaphragm coarse approach assembly and a concentric tube scanner. An analysis of the control system indicates that an integrator and single-pole low-pass filter provides near optimal behaviour of the control loop and deals with mechanical resonance in a particularly satisfactory manner. A discussion of hardware/software tradeoff and analog/digital tradeoff leads to a stand-alone design based on a PC, giving good performance with maximum use of standard commercial components and relatively simple special-purpose interface. Commercial graphical software package UNIRAS PC-DOS is employed for image display and hardcopy output. Results show excellent repeatability and stability of STM operation, with atomic resolution.

The primary purpose of this study was to develop the considerations and techniques for the selection, development, and validation of laboratory experience units in general biology for prospective elementary school teachers. The completed laboratory experience unites developed in this study may serve as resources of activities for college instructors who teach general biology to undergraduate majors in elementary education. For purposes of this study the laboratory experience unites were centered about those principles of general biology which an elementary school teacher should understand in order to teach about plants and animals.

The aim of the thesis is to upgrade an existing Remote Laboratory for Active Noise Control (ANC) and acoustics experiments providing users with a more authentic real life experience. This is done by designing a solution that allows remote position control of microphones inside a ventilation duct for ANC experiments. The suggested features to be implemented substantially improve the flexibility of the existing remote laboratory, based on the Virtual Instrument System in Reality (VISIR) platform, as well as providing more control over the system as a whole. The work in the project may be divided into the following steps: theoretical design of mechanical and electrical parts of the system along with control algorithms which include a study of similar solutions and related work, implementation of designed system, subsequent testing of the system, connecting the implemented system to the equipment for remote communication and adding the appropriate features to the remote control interface.

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No description available.

Este estudo teve como objetivos revelar os dilemas éticos do cotidiano de enfermeiros de instituições de medicina diagnóstica, e o que consideram na tomada de decisão frente a esses dilemas. Para compreender o vivencial desses enfermeiros nesse contexto, optei pela abordagem qualitativa, vertente fenomenológica, segundo a modalidade “estrutura do fenômeno situado". Foram realizadas nove entrevistas com duas questões norteadoras: “Em seu cotidiano, você identifica situações que envolvam dilemas éticos? Fale sobre a sua vivência." e “Frente a um dilema ético, o que você leva em consideração para a tomada de decisão?". Após a descrição dos discursos, foi realizada a análise ideográfica, a partir da qual surgiram sete temas: “(Não) Reconhecimento da existência de dilemas éticos"; “Falta de autonomia profissional"; “(Des) Valorização profissional"; “Fatores envolvidos na tomada de decisão"; “Humanização no relacionamento com a equipe e com o cliente"; “Postura ética" e “Valorização da dimensão técnica". Com a análise nomotética realizada posteriormente, buscou-se revelar as convergências e divergências das unidades de significado interpretadas, com o intuito de perceber a estrutura geral do fenômeno. Com as proposições foi possível desvelar que em Medicina Diagnóstica, os dilemas éticos são percebidos como situações desencadeadas pelo cliente, família, profissionais e instituição. As enfermeiras tomam decisões através da participação de todos os envolvidos na situação, ponderando o custo-benefício de uma ação para o cliente, agindo de forma humanizada, através de suas crenças, respeitando a hierarquia institucional e procurando respaldo médico quando sentem insegurança. A decisão para mudar uma rotina só é tomada quando existem recursos no trabalho. Cumprir normas e condutas da empresa, ser imparcial e humana com a equipe de enfermagem e cliente e ver o que é certo e errado para tomar a posição correta diante de uma situação ética, também são fatores considerados na tomada de decisão. / This study tried to reveal the ethical dilemmas in wich nurses from institutions of medicine diagnostic live every day, and what they consider when they make a decision. To understand the nurse’s experience in this context, I chose the qualitative analysis, according to phenomenological orientation in which there is the modality “structure of the phenomenon situated". Nine interviews were realized with two guiding questions: “In your ordinary day, do you identify situations involving ethical dilemmas? Speak about your experience." and “In front of an ethical dilemma, what do you take into consideration for making a decision?" After describing the speeches, there was an ideographic analysis in which apperead seven themes: “(No) Acknowledgement of the existence of ethical dilemmas"; “Lack of professional autonomy"; “Professional (de) valuation"; “Factors involved in making decision"; “Humanization in the relationship with the team and the customer"; “Ethical attitude" and “Valuation of the tecnique dimension". The nomothetic analysis was in order to show the convergences and divergences of the units of meaning interpreted, with the purpose of understanting the general structure of the phenomenon. With the propositions it was possible to unveil that the ethical dilemmas in Medicine Diagnostic are perceived like situations created by costumer, family professionals and institution. The nurses make a decisions by regarding the participation of people involved in the situation, analyse the cost-benefit of an action for the customer, humanize their actions, in their beliefs, respect the institucional hierarchy and look for a medical opinion when they feel insecurity. The only decide to change a routine when there are resources at work. Other factors are also considered for making a decision: execute rules and behaviours inside the company, be impartial and humane with the nursing team and the customer and identify what is right and wrong to know how to make a correct decision in an ethic situation.

This Thesis explores building low cost and reliable portable laboratory infrastructure platform for Logic Design, methods for allowing access to modern test equipment via the internet, and issues related to academic integrity. A comprehensive engineering education, per ABET, requires an equal emphasis on both lecture and laboratory components. The laboratory experience builds and establishes a foundation of skills and experiences that the student cannot obtain through any other means. The laboratory must use modern, pertinent methods and techniques including the use of appropriate tools. This is especially true when it comes to test equipment. Engineering students require and deserve training on and access to modern test equipment in order to obtain better career opportunities. However, providing access to modern and relevant labs requires a significant budget commitment. One way to extend current budgets is to adopt the growing concept of “remote labs.” This approach allows higher utilization of existing (and costly) equipment, it improves an institution’s Return on Investment (ROI), and also can be used to meet the needs of students’ complicated schedules, especially in the case of a “commuter campus,” where a majority of students live off campus. By developing remote labs, both the institution and the students benefit: Institutions increase equipment utilization, and utilize space, budgets and support personnel more efficiently. Students can access a lab whenever and wherever they have internet access. Finally, academic integrity must be protected to ensure the potential of remote laboratories in education. This Thesis presents a design and implementation plan for a low cost Logic Design laboratory infrastructure built and tested over 3 years by over 1,500 Logic Design students; a design and implementation of the infrastructure to include the ability to measure using remote test equipment; and the design of a case (3d printed or laser cut) to encapsulate a USB enabled micro-controller; and a scheme to ensure the academic integrity is maintained for in-person, hybrid and fully online classes. / Includes bibliography. / Thesis (M.S.)--Florida Atlantic University, 2018. / FAU Electronic Theses and Dissertations Collection

O presente trabalho tem como estímulo inicial uma pesquisa desenvolvida pelo Professor Doutor Antonio Luiz Dias Januzelli e a doutoranda Juliana Jardim que entre os anos de 1999 e 2000, coletaram em forma de entrevista experiências e vivências práticas de oito professores profissionais de teatro, objetivando tornar público os seus procedimentos e suas práticas centradas na formação do ator contemporâneo em São Paulo. Este presente trabalho se propôs investigar quatro destes depoimentos, a saber: Cristaine Paoli-Quito, Luiz Damasceno, Márcio Aurélio e Myrian Muniz, cruzando suas práticas, avaliando conteúdos convergentes e divergentes nos diferentes processos assim como desenvolver uma possível sistematização orgânica unificada desses conteúdos. / The present work has as initial stimulus a research developed by Doctor Professor Antonio Luiz Dias Januzelli and the graduate student Juliana Jardim that between 1999 and 2000, interviewed eight professors and theatrical professionals with the objectives of publication their proceedings and their practical approaching and training of actors at São Paulo. This present work took four interviewed pronouncements such as: Crisitane Paoli Quito, Luiz Damasceno, Márcio Aurélio e Myrian Muniz and tried to cross their practical work, analyzing the similarities and differences of their jobs and also build a possible unified system characterized by their contents.

Underwater measurements of acoustic backscattering coefficients from gravel surfaces at oblique incidence were made in a laboratory tank. A side scan geometry was adopted in these measurements using a conventional, 300kHz, side scan transducer to insonify an area which is beam width controlled in one direction and a pulse length controlled in the other. As the pulse travels along the rough surface the variation of the backscattered signal with grazing angle was studied. In the second set of measurements a normal incidence geometry was adopted to investigate the dependence of the backscattering coefficient upon range from the rough surface insonified. Two different frequencies (1MHz and 250kHz) and two different rough surfaces (a pressure release and a gravel surface) were used in this experiment. The backscattered signal was measured by a small LC5-2 hydrophone which was inserted on the acoustic axis of the transmitter. The experimental results were compared with the theoretical values developed using the Helmholtz-Kirchhoff integral. In the oblique incidence case the Fraunhofer phase approximation was used to evaluate the scattering integral. The predicted values compared well with the experimental results measured for the gravel surfaces. The backscattering coefficient was found to vary rapidly with angle at low grazing angles while this variation was not so obvious at grazing angles between 30 to 60. In the normal incidence mode the scattering integral derived using the second order, Fresnel, approximation was used to predict the theoretical backscattering coefficient values. A good agreement with the experimental results was obtained even at ranges close to the rough surface. The normal incidence backscattering coefficient of a rough surface is shown to be dependent upon the surface properties alone, only in the farfield region of the scattering area. In the nearfield of the surface, the backscatterintg coefficient is shown to be depending on the surface reflection coefficient only. In the region between these two ranges the backscattering coefficient is shown to be depending upon both the surface statistics and the measurements geometry.

The purpose of this thesis is to show the application of modern digital techniques to produce a high speed computational system that has the capability of producing a faster than real-time model for the visual systems associated with flight simulator systems. A distributed/multiprocessing system was chosen due to the increased reliability, flexibility and throughput of the computational process. The system also has the advantage of providing increased modularity and ease of expansion. This research is firstly concerned with the development of a high resolution graphics system (providing a 1024 by 1024 point screen resolution), and the techniques for the production of moving visual scenes observed by a pilot when flying over a region of terrain in a flight simulator. In particular, this work is concerned with the real-time simulation of the aerodynamics of the aircraft and considers the problems of designing and accessing a data base which represents a model of the terrain. There are three major design considerations for the real-time CGI (Computer Generated Imagery) system of the type required. The first is to ensure that all processing for each picture frame is performed within a specified time limit. Secondly, the picture must have a realistic appearance and requires realism functions to be performed in real-time. The third design consideration is the cost.