1,310 research outputs found
Uncooled Infrared Detector Featuring Silicon based Nanoscale Thermocouple
The main focus of this dissertation is to improve the performance of thermoelectric (TE) infrared (IR) detectors. TE IR detectors are part of uncooled detectors that can operate at room temperature. These detectors have been around for many years, however, their performance has been lower than their contesting technologies. A novel high-responsivity uncooled thermoelectric infrared detector is designed, fabricated, and characterized. This detector features a single standalone polysilicon-based thermocouple (without a supporting membrane) covered by an umbrellalike optical-cavity IR absorber. It is proved that the highest responsivity in the developed detectors can be achieved with only one thermocouple. Since the sub-micrometer polysilicon TE wires are the only heat path from the hot junction to the substrate, a superior thermal isolation is achieved. A responsivity of 1800 V/W and a detectivity of 2 ? 10^8 (cm. sqrt(Hz)W^?1) are measured from a 20?m x 20?m detector comparable to the performance of detectors used in commercial focal planar arrays. This performance in a compact and manufacturable design elevates the position of thermoelectric IR sensors as a candidate for low-power, high performance, and inexpensive focal planar arrays. The improvement in performance is mostly due to low thermal conductivity of thin polysilicon wires. A feature is designed and fabricated to characterize the thermal conductivity of such a wire and it is shown for the first time that the thermal conductivity of thin polysilicon films can be much lower than that of the bulk. Thermal conductivity of ~110nm LPCVD polysilicon deposited at 620C is measured to be ~3.5W/m.K
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Learning process analysis of absorptive capacity on organisational innovation: the influence of leadership styles
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University LondonThe research in this thesis investigates the learning processes of absorptive capacity (AC) as an element within organisation innovation. An analysis of leadership âstylesâ is undertaken and factors for effective innovation adoption are considered. It is apparent that AC has been well researched in recent years but there is evidence that little attention has been given into important influences such as leadership. Consequently, AC is determined to involve managerial learning through three processes. These include: (1) exploratory learning as an ability to value and acquire external knowledge, (2) transformative learning to assimilate this knowledge, and (3) exploitative learning to use knowledge for innovation. However, there is little known about interventions of AC learning towards innovation and the effects of top and middle managersâ leadership styles on these processes. Therefore, the research initially attempts to investigate the relationship between AC, innovation, and leadership styles with a view to exploring valuable theoretical insights into the learning processes involved.
A conceptual model is formulated which suggests a relationship between the learning processes of AC with different stages of innovation adoption. In this respect, the role of managers is investigated through attention to âtransformationalâ and âtransactionalâ leadership styles where the former changes employeesâ values for achieving common goals and the latter encourages exiting practices. The methodology adopted involved a qualitative strategy with data collected through three substantive case studies from research sites in Iran. In total 31 Semi-structured interviews were conducted with respondents to explore the learning processes of AC and leadership styles on innovation. Secondary documents and non-participant observations provided further insights by triangulating the data. Data was analysed in two stages (i) a description of each case was reported (ii) a thematic analysis was used in order to compare the case companies collectively. The findings supported the effects of the learning processes of AC on innovation adoption. It was also found that the leadership behaviours of top and middle managers change from transformational to transactional leadership styles during the exploitative learning process. The influence of top managersâ knowledge, middle managersâ intention, and trust in middle managers also emerged as important constructs in the learning processes. The research contributed to the learning processes of AC and the influence of managerial leadership styles by adding new insights to organisational theory. The results will also be of value to practitioners by providing prescriptive analysis when using external knowledge effectively for adopting innovation. Keywords: Absorptive capacity, learning processes, innovation, and leadership style
The Relationship between Organizational Intelligence and Organizational Agility in Teaching Hospitals of Yazd Shahid Sadoughi University of Medical Sciences
The Relationship between Organizational Intelligence and Organizational Agility in Teaching Hospitals of Yazd Shahid Sadoughi University of Medical Sciences
Kiani MohammadMehdi1, Bahrami Mohammad Amin2*, Montazeralfaraj Raziyeh3,
Falah Zadeh Hossein4, Mohammad Zadeh Morteza5
Introduction: Hospitals are the most important organizations in the field of healthcare services that require skilled personnel, necessary equipment, and suitable facilities; therefore, special attention to new and intelligent methods and also maximum use of intellectual abilities of individuals and organizations to increase hospitals agility seem to be necessary. The aim of this study was to examine the relationship between organizational intelligence and organizational agility in teaching hospitals of Yazd Shahid Sadoughi University of Medical Sciences.
Methods: In this analytical cross-sectional study, a total of 370 administrative and medical staff were included using stratified-random sampling. The required data were collected using Albrecht organizational intelligence questionnaire and organizational agility questionnaire.
Results: The results showed that organizational intelligence had effect on organizational agility (path coefficient=0.537). Mean scores of organizational intelligence and organizational agility of the hospitals were 2.29±0.66 and 2.29±0.37, respectively. Age had effect on both organizational intelligence (path coefficient=0.693) and organizational agility (path coefficient= 0.55).
Conclusion: The findings showed that increasing the organizational intelligence of the organization provides the context for having an agile organization and the organization will reach its organizational goals faster.
KeyÂŹwords: Organizational Intelligence, Organizational Agility, Teaching Hospitals, Administrative Staff, Medical Staff.
ÂŹCitation: Kiani MM, Bahrami MA, Montazeralfaraj R, Falah Zadeh H, Mohammad Zadeh M. The Relationship between Organizational Intelligence and Organizational Agility in Teaching Hospitals of Yazd Shahid Sadoughi University of Medical Sciences. Journal of Health Based Research 2016; 2(2): 105-117.
1. PhD Student, Department of Management and Health Economics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
2. Associate Professor, Hospital Management Research Center, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran,
3. Assistant Professor, Hospital Management Research Center, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran
4. Professor, Department of Biostatistics and Epidemiology, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran
5. PhD Student, Department of Biostatistics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
*Correspondence: Department of Healthcare Management, School of Public Health, Campus of Shahid Sadoughi University, Yazd.
Tel: 035-31492208 Email: [email protected]
Urban Morphology, Environmental Performances & Energy Use: A Holistic Transformation Approach Applied to Block 39 in Belgrade (Serbia) Via IMM.
Cities are responsible up to 75% of energy consumptions and 80% of CO2 emissions and due to the fact that the correlation between urban morphology and environmental stewardship has become crystal clear.In this scenario is framed the case study of block 39 in Belgrade in which an innovative methodology, IMM (Integrated Modification Methodology), has been applied in order to transform an existing urban context into a more efficient and sustainable one. The presented case study in Belgrade aims to became a more general paradigm for similar condition in East Europe, defining integrated new strategies based on IMM methodology to retrofit and transform the energy dissipative existing neighborhood in more efficient, liveable and integrated urban system.The city is considered as a single complex entity composed by heterogeneous components connected each other. A strictly sectorial approach could result in neglecting mutual dependencies of these demands. Conversely, an integrated approach can help to sharpen a better comprehension of the different
performances of different urban assessment. IMM methodology through Phasing Process shows how incorporating a wide range of issues makes it possible to improve the metabolism of the city as well as its energy performance
On special subgroups of fundamental group
Suppose is a nonzero cardinal number, is an ideal on
arc connected topological space , and
is the subgroup of (the first fundamental group of ) generated by
homotopy classes of loops. The main aim of this text
is to study s and compare them. Most
interest is in and , where denotes the
collection of all finite subsets of . We denote with . We prove the
following statements:
for arc connected topological spaces and if is isomorphic to for all infinite
cardinal number , then is isomorphic to ;
there are arc connected topological spaces and such that
is isomorphic to but is not
isomorphic to ;
for arc connected topological space we have ;
for Hawaiian earring , the sets , , and are pairwise distinct.
So s and s
will help us to classify the class of all arc connected topological spaces with
isomorphic fundamental groups.Comment: 29 page
A Reading of Joseph Conrad's The Tale
The Tale is a short story by Joseph Conrad. Typical of a Conrad story it is set at sea. The sea is symbolic of the unconscious and this story may be read as a story of the unconscious. On the outside, it seems simple; a man tells a woman a tale of the commanding officer of a patrol ship who gives false directions to another ship and sends it to its doom. In between the lines of the seemingly simple plot, however, can be read another tale; one which speaks of a human sea deeper than the sea of water; deeper, darker, and infinitely more mysterious. Man has navigated the sea of water but the unfathomed sea of his own being remains, for the most part, undiscovered. This is a sea different from the sea of this world and Conrad sets sail on it by telling a tale from another world. Sailing with Conrad, the reader can look out on the infinite vastness and try to form a picture of the infinite depth of a sea which is not visible to the human eye
A Reading of Flannery OâConnors âEverything that Rises Must Convergeâ
Everything that rises must converge is a short story which, without the aid of suspense that is often provoked in fiction by actions hanging on a bare thread in a whirling plot of intertwining â and perhaps incredible â events, catches the readerâs attention until the very last word. The plot of the story could not be any simpler; a young bachelor takes his overweight mother by bus to a âreducing classâ but before they reach the place the mother changes her mind, heads back home, has a stroke and is left by her helpless son dying or maybe dead as he goes to seek help. But parallel to the plot of events is a âplot" of revelation; as the insignificantly banal happenings take place, an unfolding of character slowly emerges before the readerâs eyes
Images of the Female Countenance in Renaissance Literature
In her article "The politics of gender" Elaine Hobby gives a clear image of the confusion evoked in modern mentality by the juxtaposition of Renaissance literature and history. The romantic scenes portrayed in the wonderland of Renaissance poetry seem uncompromisable with the bare facts of historical record. As we contemplate the shadows obscuring the male permeated poetic language of the age however, we do discern spots of light illuminating the overall picture. The age has its own logic and its own language and although neither may be wholly appealing to the modern palate, both are, within their own historical framework, unequivocal and self-consciously assertive
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