1,720,961 research outputs found
Untersuchung und Entwurf von DC MEMS Schaltern für Integrierte Self-x Sensorsysteme
Get PDFThe advances in sensor technology have introduced smart electronic products with
high integration of multi-sensor elements, sensor electronics and sophisticated signal
processing algorithms, resulting in intelligent sensor systems with a significant level
of complexity. This complexity leads to higher vulnerability in performing their
respective functions in a dynamic environment. The system dependability can be
improved via the implementation of self-x features in reconfigurable systems. The
reconfiguration capability requires capable switching elements, typically in the form
of a CMOS switch or miniaturized electromagnetic relay. The emerging DC-MEMS
switch has the potential to complement the CMOS switch in System-in-Package as
well as integrated circuits solutions. The aim of this thesis is to study the feasibility
of using DC-MEMS switches to enable the self-x functionality at system level.
The self-x implementation is also extended to the component level, in which the
ISE-DC-MEMS switch is equipped with self-monitoring and self-repairing features.
The MEMS electrical behavioural model generated by the design tool is inadequate,
so additional electrical models have been proposed, simulated and validated. The
simplification of the mechanical MEMS model has produced inaccurate simulation
results that lead to the occurrence of stiction in the actual device. A stiction conformity
test has been proposed, implemented, and successfully validated to compensate
the inaccurate mechanical model. Four different system simulations of representative
applications were carried out using the improved behavioural MEMS model, to
show the aptness and the performances of the ISE-DC-MEMS switch in sensitive
reconfiguration tasks in the application and to compare it with transmission gates.
The current design of the ISE-DC-MEMS switch needs further optimization in terms
of size, driving voltage, and the robustness of the design to guarantee high output
yield in order to match the performance of commercial DC MEMS switches
Design and development of a brake system using smart materials
No full textThe research is done to fulfil the requirements of the Master of
Mechatronic program at the University of Applied Sciences Ravensburg-Weingarten.
This research is about designing a new concept of a brake system using smart materials.
Smart materials are materials that receive, transmit or process a stimulus and respond by
producing a useful effect. Smart materials have attracted researchers' attention in
venturing a new technology that can improve our lives. There are a lot of materials that
have been considered as smart materials. In this research a new type of material which is
Ferromagnetic Shape Memory Alloy (FSMA) has been chosen. This alloy have
significant advantages in term of producing a large scale of output effect and delivering
fast response times compared to the other types of materials Based on these factors
FSMA can be an appropriate material as an actuator for brake mechanism systems.
After the invention of FSMA in early 1990s by Dr. Kari Ul\ako, lots of
research laboratories has set up new research groups in order to have a better
understanding about this material. Up to now they are still venturing the ways to develop
this material as actuators. There are a lot of potential field of application such as couplers
element, vibrators element, sensor and generator element, fluidic element and positioning
devices. FSMA products that have been made available in the market are linear motor
and fluidic pump from Adaptamat Ltd. FSMA has a big potential to replace current
mechanical actuator and machinery such as pneumatic and hydraulic.
In designing a brake system for robot applications there are several design
constraints that need special attention. The design must be light and compact so that it
will not become a significant additional load to the robot. In this robot application the
brake system has a slightly different requirement. The brake torque is required to provide
grips to the rotary shaft and not to stop the wheels. So in this application an initial
braking torque is preferred.
The research also gives special attention in finding an innovative way to
improve the methodology of designing and developing mechatronic products. A new
approach using the UML 2.0 has been used as a modelling technique. The technique is a
well proven technique in the software engineering applications and with a minimum
modification it is now suitable for the mechatronic engineering. Based on the results that
have been achieved in this research the integration of the UML 2.0 with the Pahl and
Beitz design methodology and the V-model has been successful
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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