629 research outputs found

    A digital system design language

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    Imperial Users onl

    The role of effective human resource factors in participative management: A comparative Study between Indian and Iranian employees

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    There is an overwhelming need to focus on the human capital and the role of this important resource on organizations’ systems. In addition, there is a need for study on human resource development and participative management system. This would not be an interesting topic for study, if it were not a comparative study in the field of human capital and participative management system. Two important sectors were selected for the study i.e., Gas and Car parts companies. Gas Indian Ltd in Delhi (GAIL) and the National Gas Company of Isfahan, Iran; and also, two manufacturers of car parts in India and Iran, named Sona Group Company (in India) and Atlas Pump Sepahan (in Iran) were selected. The objectives of the study were associated with the role of some important human resource factors in participative management system. Objectives of the study are as follows: The role of communication, employees compassion, employees sentiment, reward system and training in participative management system, also if there were any significant difference on the impact of mentioned variables in Indian and Iranian organizations from the perspective of employees. The questionnaires were distributed among randomly selected employees and the researcher collected responses through the questionnaires of employees. Analysis of data was based on the SPSS (Statistical Package for the Social Sciences). Three levels of analyses were computed: 1.Descriptive analyses 2. T-Test 3. Correlation analyses. The general observations associated with attitudes of Indian and Iranian employees about hypotheses are presented in this paper

    Investigating the epidermal Notch activation during wound healing and the consequences of prolonged Notch activity during skin wound healing

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    The Notch signaling pathway is critically involved in cell fate decisions during skin development and homeostasis. In the present study an in vivo model (seven-week-old male, C57BL/6) was used to elucidate the role of epidermal Notch activation in the healing of full-thickness dermal wound. Immunolocalization of activated Notch1, Notch2 and Jagged1 was performed during skin wound healing in vivo in mice. The expression level of Notch1, Notch 2 and Jagged1 in the C57BL/6 skin was examined by quantitative PCR (qPCR). This study shows that skin injury rapidly actives Notch signaling in the epidermis. Epidermal forced Notch1 activation results in a Jagged1 dependent Notch2 activation in epidermis. Data presented in this thesis also demonstrate that the prolonged epidermal Notch activation via a 4-hydroxy-tamoxifen-inducible transgene before and after wounding caused an over-activation of Notch during early stages of the healing of full-thickness dermal wounds. The expression level of Notch1, Notch2 and the inflammatory Notch related genes, in the transgenic wounded skin was examined by quantitative PCR (qPCR). The phenotypes and morphology of the transgenic skin were compared with that of wild type (WT) controls. The skin response to wound healing was studied by H&E staining at the microscopic level at 2, 5 and 8 days post injury. These data show that the prolonged epidermal Notch activity may do more harm than good in terms of an increased inflammatory response at the wound site. These data suggest that Notch plays an important role in the early stages of the skin wound healing process, a finding that has implications in wound inflammatory responses. This thesis also examines skin wound healing in different anatomical locations on seven-week-old male, C57BL/6 mice model. 4mm full thickness dermal wounds were made at different anatomic regions; upper posterior, middle to posterior and posterior-most (caudal). These data showed that lower body wounds healed significantly better than those in the upper posterior, or middle to posterior of the mouse back skin. The data presented here show that anatomical location is important in wound healing responses, as reflected by differences in keratinocyte proliferation and differentiation

    Knowledge and attitudes of Iranian parents and students (age 11-18) about the new educational guidance program, and their perceptions of the guidance counselor\u27s role

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    Planning of educational and guidance programs is conducted without providing a way for parents and students to express their expectations of that program and without discovering how well the parents and students understand the program which is proposed. Historically, education in Iran has been organized to allow for no involvement of the community in educational planning and change. Students and parents have had to accept the programs without expressing their attitudes toward these programs or raising questions as to their validity. A great number of students and their parents have not been satisfied with the services of the schools, and the result has been that they have lost interest in educational affairs. Consequently, they have tried to ignore all problems having to do with schools and education. The Fourth Plan Program, while introducing counseling and guidance into the school program, nevertheless does not provide for an increased amount of parent and student involvement in the decisions which directly affect them. In order to gain information about the concerns and attitudes of people at all socio-economic levels during the process of the current reforms, direct inquiry from students and parents at the middle and lower socio-economic level is needed. Therefore, it seemed appropriate to survey the extent of the knot/ledge and the attitudes of Iranian school students and their parents toward the new educational system. In addition, it appeared important to gain information about their perceptions and expectations of the role of guidance counselors in the schools

    Metabolic studies in patients undergoing thoracic surgery.

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    1. The metabolic changes following thoracic surgery in three groups of patients, (oesophageal cancer, lung cancer and hiatus hernia) have been studied. 2. Fasting levels of plasma glucose in patients with tumours of the lung or oesophagus were within the normal range and were no different from those found in patients with hiatus hernia, before operation. 3. Hyperglycaemia occurred after oesophagectomy, oesophago-gastrectomy and herniorrhapy. Operations of the lung, such as pneumonectomy or lobectomy did not lead to an immediate rise in blood sugar Level after surgery. 4. Post-operative hyperglycaemia was accompanied by the fall in the levels of plasma glucogenic amino acids. Evidence is presented in support of the idea that post-operative hyperglycaemia is the result of increased glucose production rather than the decrease in glucose utilization. 5. In contrast to the plasma insulin concentrations which remained unchanged immediately after surgery, the Levels of plasma 11-hydroxy-corticosteroids rose immediately after operation and that was accompanied by the same rise in the Levels of plasma FFA. 6. Plasma insulin concentration rose significantly and the rise was not proportional to the level of blood glucose on the second post-operative day. Since the urinary excretion of ketone bodies was also high on the same day, there was evidence of postoperative insulin resistance. 7. Elevated plasma levels of glucagon coincided with hyperglycaemia in oesophageal cancer patients but did not occur in lung cancer patients in whom there was no hyperglycaemia. 8. The plasma free tryptophan level in patients with oesophageal or lung cancer tended to be lower than in patients with hiatus hernia. Furthermore, the concentration of plasma free tryptophan rose after surgery and this rise was associated with a fall in the level of plasma total tryptophan. 9. There was no significant correlation between the level of plasma tryptophan and the rate of urinary excretion of N'-methylnicotinamide (NMN) in patients with oesophageal cancer. The significance of these findings has been discussed in relation to the metabolism of tryptophan. 10. The concentration of copper in the plasma was found to be elevated in patients with oesophageal cancer. Thoracic surgery was not associated with a consistent change in the level of plasma copper. 11. There was a transient fall in the level of plasma zinc after operation and this was associated with a similar fall in urinary excretion in hiatus hernia and oesophageal cancer. 12. Urinary levels of cyclic AMP or GMP in patients with tumours of the lung or oesophagus were no different from those found in patients with hiatus hernia. Cyclic GMP increased after surgery, and was higher in patients with malignancy than in patients with hiatus hernia. 13. Post-operative parenteral nutrition prevented the fall of plasma amino acids and led to a rise of plasma albumin. It also diminished the urinary losses of nitrogen on the second post-operative day

    Light Trapping in Thin Film Crystalline Silicon Solar Cells

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    This dissertation presents numerical and experimental studies of a unified light trapping approach that is extremely important for all practical solar cells. A 2D hexagonal Bravais lattice diffractive pattern is studied in conjunction with the verification of the reflection mechanisms of single and double layer anti-reflective coatings in the broad range of wavelength 400 nm - 1100 nm. By varying thickness and conformity, we obtained the optimal parameters which minimize the broadband reflection from the nanostructured crystalline silicon surface over a wide range of angle 0°-65°. While the analytical design of broadband, angle independent anti-reflection coatings on nanostructured surfaces remains a scientific challenge, numerical optimization proves a viable alternative, paving the path towards practical implementation of the light trapping solar cells. A 3 µm thick light trapping solar cell is modeled in order to predict and maximize combined electron-photon harvesting in ultrathin crystalline silicon solar cells. It is shown that the higher charge carrier generation and collection in this design compensates the absorption and recombination losses and ultimately results in an increase in energy conversion efficiency. Further, 20 µm and 100 µm thick functional solar cells with the light trapping scheme are studied. The efficiency improvement is observed numerically and experimentally due to photon absorption enhancement in the light trapping cells with respect to a bare cell of same thickness

    The examination of pre-university school boys' awareness of HIV prevention, transmission and treatment in Khuzestan province

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    This research aimed to examine pre-university school boys' awareness of the factors in preventing, transmitting and treating HIV in Khuzestan province, Iran. This is a descriptive cross-sectional study. A sample size of 300 was determined using multistage random sampling method. The data were collected through a questionnaire, being analyzed with chi-square test. The research findings show that the students' awareness of HIV prevention and transmission is not desirable, the majority of the population's extent of information being below the expected mean while that of the disease treatment is more favorable. The students' awareness of the methods for HIV prevention and transmission is low

    Shedding Light on the Off-Hours Coverage Gap in Radiology: Improving Turnaround Times and Critical Results Reporting

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    Objective: Devise a plan to optimize off-hours faculty and trainee staffing within the Department of Radiology Measure the magnitude of patient safety gains in terms of report turnaround times (TAT) and critical results communication times (CRC)https://jdc.jefferson.edu/patientsafetyposters/1044/thumbnail.jp
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