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Search Results: 1 - 10 of 13074 matches for " Kazem Mohammad "
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A Survey on Underwater Acoustic Sensor Networks: Perspectives on Protocol Design for Signaling, MAC and Routing  [PDF]
Mohammad Sharif-Yazd, Mohammad Reza Khosravi, Mohammad Kazem Moghimi
Journal of Computer and Communications (JCC) , 2017, DOI: 10.4236/jcc.2017.55002
Abstract: Underwater acoustic sensor networks (UASNs) are often used for environmental and industrial sensing in undersea/ocean space, therefore, these networks are also named underwater wireless sensor networks (UWSNs). Underwater sensor networks are different from other sensor networks due to the acoustic channel used in their physical layer, thus we should discuss about the specific features of these underwater networks such as acoustic channel modeling and protocol design for different layers of open system interconnection (OSI) model. Each node of these networks as a sensor needs to exchange data with other nodes; however, complexity of the acoustic channel makes some challenges in practice, especially when we are designing the network protocols. Therefore based on the mentioned cases, we are going to review general issues of the design of an UASN in this paper. In this regard, we firstly describe the network architecture for a typical 3D UASN, then we review the characteristics of the acoustic channel and the corresponding challenges of it and finally, we discuss about the different layers e.g. MAC protocols, routing protocols, and signal processing for the application layer of UASNs.
Mixed Epithelial and Stromal Tumor of the Kidney or Adult Mesoblastic Nephroma; An Update
Mohammad Kazem Moslemi
Urology Journal , 2010,
Abstract: PURPOSE: Our aim was to review the spectrum of usual and unusual clinical and morphologic findings observed in mixed epithelial and stromal tumor of the kidney (MEST). MATERIALS AND METHODS: On the basis of MEDLINE database searches, we assessed all aspects of MEST or adult mesoblastic nephroma since the first report in 1997 till the end of 2009. RESULTS: Mixed epithelial and stromal tumor is a relatively rare and distinct neoplasm of the kidney that should be distinguished from other renal neoplasms. Although the overall prognosis is favorable, recurrence andmalignant transformation of MEST can occur CONCLUSION: It is difficult to distinguish benign or malignant nature onimaging studies.
Determining the Quality of Management and Structural Elements of the Epidemiology and Biostatistics Department in Tehran University of Medical Sciences  [PDF]
Fereshteh Farzianpour, Kazem Mohammad, Hossein Malekafzali, Saharnaz Nejat
Journal of Service Science and Management (JSSM) , 2014, DOI: 10.4236/jssm.2014.76040
Abstract: Introduction: The system of quality in higher education requires a systematic evaluation of all of its different aspects. Different patterns of evaluation reveal the strengths and weaknesses of the programs and facilitate the informed decisions. Objectives: The objectives of the present research are as follows: 1) Determining the quality of the structural elements of the Epidemiology and Biostatistics Department; 2) Determining the strengths, weaknesses, opportunities and threats to improve the quality of activities in the department under research. Design: In this research, the efficiency of the department was studied based on the internal self-evaluation. For this purpose, pre-determined indices with relative modifications were used. This study was conducted with the collaboration of the head of the department, faculty members, all of the students (residents, Ph.D. and M.S. students) and the graduates. Through a pilot study the initial rates of the areas under research were first determined by the opinion poll carried out among all the faculty members, then through proper tests, unrelated data were identified and omitted and the final rates were extracted. Results: The mean of the areas under study was 59.8% of which the minimum (37%) was related to the area of aims and objectives and the maximum (72.6%) related to area of the graduates. Conclusions: The graduate domain is one of the key areas under study in the internal evaluation of this department which received a good score.
MRF-Based Multispectral Image Fusion Using an Adaptive Approach Based on Edge-Guided Interpolation  [PDF]
Mohammad Reza Khosravi, Mohammad Sharif-Yazd, Mohammad Kazem Moghimi, Ahmad Keshavarz, Habib Rostami, Suleiman Mansouri
Journal of Geographic Information System (JGIS) , 2017, DOI: 10.4236/jgis.2017.92008
Abstract: In interpretation of remote sensing images, it is possible that some images which are supplied by different sensors become incomprehensible. For better visual perception of these images, it is essential to operate series of pre-processing and elementary corrections and then operate a series of main processing steps for more precise analysis on the images. There are several approaches for processing which are depended on the type of remote sensing images. The discussed approach in this article, i.e. image fusion, is the use of natural colors of an optical image for adding color to a grayscale satellite image which gives us the ability for better observation of the HR image of OLI sensor of Landsat-8. This process with emphasis on details of fusion technique has previously been performed; however, we are going to apply the concept of the interpolation process. In fact, we see many important software tools such as ENVI and ERDAS as the most famous remote sensing image processing tools have only classical interpolation techniques (such as bi-linear (BL) and bi-cubic/cubic convolution (CC)). Therefore, ENVI- and ERDAS-based researches in image fusion area and even other fusion researches often don’t use new and better interpolators and are mainly concentrated on the fusion algorithm’s details for achieving a better quality, so we only focus on the interpolation impact on fusion quality in Landsat-8 multispectral images. The important feature of this approach is to use a statistical, adaptive, and edge-guided interpolation method for improving the color quality in the images in practice. Numerical simulations show selecting the suitable interpolation techniques in MRF-based images creates better quality than the classical interpolators.
Retained Intraabdominal Gossypiboma, Five Years after Bilateral Orchiopexy
Mohammad Kazem Moslemi,Mehdi Abedinzadeh
Case Reports in Medicine , 2010, DOI: 10.1155/2010/420357
Abstract: Introduction. Gossypiboma or textiloma is used to describe a retained surgical swab in the body after an operation. Intraabdominal surgical sponge is an uncommon surgical error. The incidence of gossypiboma has been reported as high as 1 in 1000 to 15,000 intraabdominal operations. Gossypiboma may cause serious morbidity and may lead to mortality. Case presentation. Herein, we report a 24 years-old man who was admitted due to the intraabdominal mass after evaluation of primary infertility. He had a surgical history of bilateral abdominal orchiopexy 5 years previously, performed at another hospital. Hydatid cyst was suspected by abdominal computed tomography. After laparotomy excision, the cyst wall opened incidentally, and draining of a large amount of thick pus with retained surgical gauze within the cyst was found, with final diagnosis of gossypiboma. Conclusion. The policy that prevention is far more important than cure is highly appreciated. Accurate sponge and instrument counts, along with radiologic evaluation when a discrepancy is found, can be helpful. Although human errors cannot be completely avoided, continuous medical training and strict adherence to rules of the operation room should reduce the incidence of gossypiboma to a minimum. Surgical sponges should be counted once at the start and twice at the end of all surgical operations.
Microwave assisted oxidative coupling of thiols to symmetrical disulfides with tripropylammonium fluorochromate(VI) (TPAFC)
Mohammad Kazem Mohammadi, Shahriare Ghammamy
Bulletin of the Chemical Society of Ethiopia , 2012,
Abstract: Tripropylammonium fluorochromate(VI) (TPAFC) is an efficient and novel reagent, which can be prepared easily and oxidizes thiols to the corresponding disulfides, quickly. The reactions are performed cleanly and are controlled to stop at the disulfide stage, without over-oxidation or side products. Coupling of thiols to their corresponding disulfides, was studied in solution at room temperature and under conditions using a minimal amount of solvent under microwave irradiation. The easy procedure, simple work-up, short reaction times, and excellent yields are other advantages of this reagent. KEY WORDS: Thiol, Oxidation, Coupling, Disulfide, Tripropylammonium fluorochromate, Microwave irradiation Bull. Chem. Soc. Ethiop. 2012, 26(1), 139-144. DOI: http://dx.doi.org/10.4314/bcse.v26i1.16
Human Resource Management and Productivity: Situational Analysis of Tabriz University of Medical Sciences, Iran, 2008
Mohammad Hossein Daneshvar,Kazem Ashjaei
Research Journal of Biological Sciences , 2012,
Abstract: Human resources are the most important factor in the raise of productivity in the organizations in particular in organizations that offering special services like health care services. Based on this importance, the present research is following to clarify effective factors in the raise of human resources productivity in Tabriz Medical University, whether there is a suitable base for human resources productivity and the best performance of the employees in Medical University or not? The eight fold factors have been examined and measured as the effective factors in human resources productivity, including: innovation and creativity opportunities, welfare facilities; performance assessment, reasonable payment, attitude to the work and organizations, professional factors, partnership, effective management, leadership and human resource training. Total 363 of employees involved through Kokaran method as study group and t-test and F-test used to measurement and to clarify correlation among variables. The results showed that 6 factors have been forgotten in the organization and do not have suitable state now, those factors were: performance assessment, reasonable payment, effective management, leadership; human resource training, innovation and creativity, welfare facilities. But about two factors, attitude to the work and organizations, partnership atmosphere and group working the opinions of staff were completely positive and prideful. The employees also believed that the improvement of the state of effective management and leadership factor will have most effect on the raise of human resources productivity in the university. It seems that Tabriz University of Medical Sciences as a health organization needs to focus on human resources development to enhance productivity. The result of this research has been highlighted focus areas to work in order to support of organizational culture development to get high productivity. Of course existences of positive attitude to work and also group working are important factors and opportunities to support projects related to building capacity within the university to improve productivity.
Urologist-operated ultrasound and its use in urological outpatient clinics
Mohammad Kazem Moslemi, Behnam Mahfoozi
Patient Preference and Adherence , 2011, DOI: http://dx.doi.org/10.2147/PPA.S17132
Abstract: ologist-operated ultrasound and its use in urological outpatient clinics Original Research (3876) Total Article Views Authors: Mohammad Kazem Moslemi, Behnam Mahfoozi Published Date January 2011 Volume 2011:5 Pages 85 - 88 DOI: http://dx.doi.org/10.2147/PPA.S17132 Mohammad Kazem Moslemi1, Behnam Mahfoozi2 1Department of Urology, Kamkar Hospital, School of Medicine, Qom University of Medical Sciences, Qom, Iran; 2Department of Radiology, Shahid Chamran Hospital, Tehran, Iran Introduction: Ultrasonograghy plays an important role in the evaluation of urinary tract disorders in cases of medical or surgical renal disorders, because of its lower cost, availability, and lack of ionizing radiation and because with it there is no need for contrast material injection or ingestion. It needs no intervention or preparation and specifically can differentiate between the multiple causes of flank pain. Urologist-operated sonography is a quick, cost-effective, and time-saving modality for both the physician and patient for obtaining first or final diagnosis. Based on its results, patients can be selected for appropriate management and further assessment. Materials and methods: The efficacy of ultrasound examination by a trained urologist in the differentiation of urological emergencies admitted in a district private clinic was studied. Between April 2008 and April 2010, a total of 724 patients (1448 renal units) had renal ultrasound performed by a trained urologist on acute admission. The sonographic findings were compared with subsequent definitive radiological investigations performed as needed, such as KUB (kidney, ureter, bladder) or IVP (intravenous pyelogram). Patient satisfaction and permission for ultrasonography were evaluated by oral consent. Loin pain was the presenting symptom in 45% of the patients (n = 326 cases). Results: Diagnosis was achieved in 96% of patients. Further evaluations were requested as needed in suspicious cases. If any hydronephrosis was detected and patients' history and/or complaints were suggestive of renal or ureteral stones, an outpatient KUB was requested. For more complex situations, IVP was the next option. Abnormal findings were recorded in 184 cases (25.5%). Mild to moderate unilateral hydronephrosis with or without hydronephrosis was the most common finding observed sonographically. The sensitivity of our ultrasonography evaluation was 99.7%. Conclusion: Office urologist-operated sonograghy may supplement the information available through routine history, physical examination, and laboratory studies. Our study shows that urological trainees can use ultrasound with high levels of accuracy, thereby improving patient management with a high level of patient satisfaction.
Urologist-operated ultrasound and its use in urological outpatient clinics
Mohammad Kazem Moslemi,Behnam Mahfoozi
Patient Preference and Adherence , 2011,
Abstract: Mohammad Kazem Moslemi1, Behnam Mahfoozi21Department of Urology, Kamkar Hospital, School of Medicine, Qom University of Medical Sciences, Qom, Iran; 2Department of Radiology, Shahid Chamran Hospital, Tehran, IranIntroduction: Ultrasonograghy plays an important role in the evaluation of urinary tract disorders in cases of medical or surgical renal disorders, because of its lower cost, availability, and lack of ionizing radiation and because with it there is no need for contrast material injection or ingestion. It needs no intervention or preparation and specifically can differentiate between the multiple causes of flank pain. Urologist-operated sonography is a quick, cost-effective, and time-saving modality for both the physician and patient for obtaining first or final diagnosis. Based on its results, patients can be selected for appropriate management and further assessment.Materials and methods: The efficacy of ultrasound examination by a trained urologist in the differentiation of urological emergencies admitted in a district private clinic was studied. Between April 2008 and April 2010, a total of 724 patients (1448 renal units) had renal ultrasound performed by a trained urologist on acute admission. The sonographic findings were compared with subsequent definitive radiological investigations performed as needed, such as KUB (kidney, ureter, bladder) or IVP (intravenous pyelogram). Patient satisfaction and permission for ultrasonography were evaluated by oral consent. Loin pain was the presenting symptom in 45% of the patients (n = 326 cases).Results: Diagnosis was achieved in 96% of patients. Further evaluations were requested as needed in suspicious cases. If any hydronephrosis was detected and patients' history and/or complaints were suggestive of renal or ureteral stones, an outpatient KUB was requested. For more complex situations, IVP was the next option. Abnormal findings were recorded in 184 cases (25.5%). Mild to moderate unilateral hydronephrosis with or without hydronephrosis was the most common finding observed sonographically. The sensitivity of our ultrasonography evaluation was 99.7%.Conclusion: Office urologist-operated sonograghy may supplement the information available through routine history, physical examination, and laboratory studies. Our study shows that urological trainees can use ultrasound with high levels of accuracy, thereby improving patient management with a high level of patient satisfaction.Keywords: ultrasonograghy, kidney, bladder, urologist, CT scan, cystourethroscopy, KUB (kidney, ureter, bladder), urologist-oper
Social Work Skills in Working with Survivors of Earthquake: A Social Work Intervention - Iran
Ghojavand, Mohammad Reza Iravani and Kazem
Social Work and Society , 2005,
Abstract: The Loss, grief and other problems are events that most of people experience them during their Life. The earthquake is a disaster that makes people experience loss, grief and problems simultaneously. This crisis affects on survivors as much as they face to dangers in their lives. Thus, most of them need to being supported until they can solve their problems, be relaxed and do their daily activities. We know that the profession of social workers is to assist individuals who are seeking help. But there is a Problem, how do they help the clients efficiently? Especially, those clients who have suffered earthquake. Generally, the role of social workers in helping the survivors of earthquake is significant. To this end, the present paper tries to describe the process of social casework and those skills required for social workers to help the survivors. These skills include: situational supporting, hopefulness making, consoling, assuring, concentrating, solutions developing and refer.
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