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Search Results: 1 - 10 of 416417 matches for " Hisham M. Al Sabah "
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Pulmonary Hypertension Induced by Thalidomide (and Derivatives) in Patients with Multiple Myeloma: A Systematic Review  [PDF]
Abdulqadir J. Nashwan, Nader I. Al-Dewik, Hisham M. Al Sabah, Mohamed A. Yassin, Shehab F. Mohamed, Nabil H. Omar, Dana B. Mansour
Journal of Cancer Therapy (JCT) , 2016, DOI: 10.4236/jct.2016.713094
Abstract: Thalidomide is widely used in the treatment of multiple myeloma (MM). In recent years, several cases of pulmonary hypertension have been reported following treatment with thalidomide. The aim of this review was to evaluate the published literature on multiple myeloma patients with pulmonary hypertension following thalidomide treatment. A literature search was performed between 2000 and 2016. A total of 7 eligible studies were identified and deemed eligible, including 11 cases—approximately 37% (4 cases) with IgA (k), 27% (3 cases) with IgG (λ) MM, 27% (3 cases) with IgG (k) MM, and one case (9%) with primary plasma cell leukemia (PPCL). The vast majority of cases—82% (9 cases)—are associated with thalidomide, while only 18% (2 cases) are related to thalidomide derivatives (lenalidomide and pomalidomide). In conclusion, pulmonary hypertension induced by thalidomide or derivatives in multiple myeloma (MM) patients is related to a multifactorial etiology including the pathophysiology of the disease, thromboembolic events, preexisted cardiovascular conditions, comorbidities, and combination with other chemo- or bio-therapeutic agents. MM patients should be evaluated for signs and symptoms underlying cardiopulmonary disease before initiating, and during treatment with thalidomide.
The Impact of the Iraq War on the Country Beta of MENA Markets
Hisham M. Al Refai
International Journal of Economics and Finance , 2011, DOI: 10.5539/ijef.v3n2p12
Abstract: This paper utilizes the Kalman filter approach to examine the impact of the Iraq war on the country betas of 11 equity markets in the MENA region. The Kalman filter model allows the country beta to vary over time conditional on the interaction with Iraq war dummy in the transition equation. The results show that the Iraq war has a positive impact on the country betas of all the MENA countries under study but statistically significant for Egypt, Morocco, Tunisia, and Kuwait. The Iraq war has created a sudden shift in the time paths of the country betas, which reflected in a significant structural break and a dramatic increase of these equity market risks in the region. Although the impact of this geopolitical event is found to be limited to four markets in the region, the results correspond to the impact of the geopolitical events like the Iraq war on equity markets.
Unusual Malignant Transformation of Recurrent Sebaceoma. A Case Report
Heba Al-Khashnam,Hisham Burezq,Ibrahim Al-Aradi,Humoud Al-Sabah
Clinical Medicine : Oncology , 2008,
Abstract: Sebaceoma is a benign tumor composed of incompletely differentiated sebaceous cells of varying degrees of maturity. Sebaceomas was never reported as a known premalignant lesion. This is a report of a sixteen year old boy who presented with a malignant transformation of a recurrent sebaceoma which was excised twice by Moh’s surgery. Excision was done with a free margin of 1 cm down to the parotid fascia. Reconstruction was performed on the same set by using cervicofascial ap extending down to the supra-clavicular area. The patient had an uneventful postoperative period apart from distal marginal necrosis of the ap, which healed nicely with conservative measures and daily dressing and was sent to our cancer centre to start his adjuvant radiotherapy. Previous literature stated that sebaceoma is a distinctive benign tumor. We have presented a case of an unusual malignant transformation of a preauricular recurrent sebaceoma. This indicates that sebaceoma does have a potential risk of malignant transformation. We believe that managing recurrent sebaceoma more aggressively with wide local excision and postoperative adjuvant radiotherapy would provide better prognosis.
A New Method for Fastening the Convergence of Immune Algorithms Using an Adaptive Mutation Approach  [PDF]
Mohammed Abo-Zahhad, Sabah M. Ahmed, Nabil Sabor, Ahmad F. Al-Ajlouni
Journal of Signal and Information Processing (JSIP) , 2012, DOI: 10.4236/jsip.2012.31011
Abstract: This paper presents a new adaptive mutation approach for fastening the convergence of immune algorithms (IAs). This method is adopted to realize the twin goals of maintaining diversity in the population and sustaining the convergence capacity of the IA. In this method, the mutation rate (pm) is adaptively varied depending on the fitness values of the solutions. Solutions of high fitness are protected, while solutions with sub-average fitness are totally disrupted. A solution to the problem of deciding the optimal value of pm is obtained. Experiments are carried out to compare the proposed approach to traditional one on a set of optimization problems. These are namely: 1) an exponential multi-variable function; 2) a rapidly varying multimodal function and 3) design of a second order 2-D narrow band recursive LPF. Simulation results show that the proposed method efficiently improves IA’s performance and prevents it from getting stuck at a local optimum.
Interpretation of Information Processing Regulations  [PDF]
Sabah Al-Fedaghi
Journal of Software Engineering and Applications (JSEA) , 2009, DOI: 10.4236/jsea.2009.22011
Abstract: Laws and policies impose many information handling requirements on business practices. Compliance with such regu-lations requires identification of conflicting interpretations of regulatory conditions. Current software engineering methods extract software requirements by converting legal text into semiformal constraints and rules. In this paper we complement these methods with a state-based model that includes all possibilities of information flow. We show that such a model provides a foundation for the interpretation process.
Application of Data Envelopment Analysis to Measure the Technical Efficiency of Oil Refineries: A Case Study
Sabah M. Al-Najjar,Mustafa A. Al-Jaybajy
International Journal of Business Administration , 2012, DOI: 10.5430/ijba.v3n5p64
Abstract: This paper is an attempt to implement the Data Envelopment Analysis (DEA) approach to measure the relative efficiency of a sample of oil refineries in Iraq over a period of two years, 2009-2010. We demonstrate that DEA is an effective tool for the Ministry of Petroleum (MOP) for monitoring and controlling the performance of oil refineries, which are growing as an important sector in Iraq. The authors followed a case study methodology where data about the inputs and outputs of refineries are gathered and analyzed to compute the relative efficiency of the refineries. Based on the results obtained, 50% of the refineries were efficient in 2009, while 58% of them were efficient in 2010, and the overall efficiency of the refineries studied was about 82% and 87% respectively. Later, inefficient refineries were investigated closely to identify the areas in which the use of resources manifest decreasing returns to scale. We concluded the paper with some recommendations on the applicability of the DEA for oil refinery efficiency evaluation. Due to the absence of research work, in this discipline, in the oil sector in Iraq, this study shall augment our knowledge on how oil refineries in Iraq may apply DEA to measure their efficiency, and how they might use the results to overcome efficiency problems. Although the results of the present paper are limited to the oil refineries studied; the DEA approach could trigger the attention of policy makers in the MOP to apply DEA to improve the efficiency of other DMUs. In addition, other manufacturing and service sectors in Iraq could, also, benefit from this approach.
Staffing and Scheduling Emergency Rooms in Two Public Hospitals: A Case Study
Sabah M. Al-Najjar,Samir Hussain Ali
International Journal of Business Administration , 2011, DOI: 10.5430/ijba.v2n2p137
Abstract: Emergency Rooms (ER) in hospitals are considered as an integral part of the health care system. The number of patients arriving to the ER constitutes a significant percentage of the total patients who demand health services from a hospital. Therefore insuring the ER services around the hour is very crucial to maximize patients' care. In addition, the efficient allocation and utilization of nurses and physicians is one of the most important issues facing ER administrators. Although demand on ER services in hospitals at Baghdad increases dramatically at certain incidents, we observed that the ERs, where we conducted the study, are overstaffed with nurses and physicians around the day. However, it is, always, desirable to operate any emergency room with minimum staff, while maintaining the quality of patient care. This paper simulates the patients' arrivals to determine the adequate number of nurses and physicians, required, over 24 hours, at the ERs of two large public hospitals at the city of Baghdad. The simulation results were adjusted and used to determine the number of physicians and nurses in each ER for one week, 3-shift working day. The analysis conducted in this paper revealed that it is possible to downsize the current number of physicians by an average of 28%, and the number of nurses by about 55% while maintaining emergency services around the hour. The results could be translated into lower operating expenses of the ER, and better utilization of staff resources in other parts of the hospital.
Designing a Balanced Scorecard to Measure a Bank's Performance: A Case Study
Sabah M. Al-Najjar,Khawla H. Kalaf
International Journal of Business Administration , 2012, DOI: 10.5430/ijba.v3n4p44
Abstract: Performance measurement systems play a key role in evaluating the strategic performance of an organization, but many managers agree that their evaluation systems do not adequately fulfill this function. Hence, in recent years a shift towards the Balanced Scorecard (BSC) has emerged as a managerial approach to evaluate the strategic performance of the organization. The purpose of this study is to contribute to the understanding of how BSC is developed and applied in evaluating the performance of a Large Local Bank (LLB) in Iraq. Using the concepts of Kaplan and Norton, and the data made available from the bank, a BSC was derived to measure the performance of the bank between 2006-2009. The analysis assisted the cause-effect relationships between the non-financial, and the financial dimensions of the BSC. Due to lack of research work, in this area, in the banking sector in Iraq, this study shall contribute to the knowledge on how banks in Iraq may apply the BSC to evaluate their performance, and how they might turn strategic vision into potential performance. The authors proposed some future research needs required in this area. The use of the BSC developed here is limited to the bank studied; however, the approach could trigger off reflections among policy makers and other banks to start using the BSC.
ISO 9001 Implementation Barriers and Misconceptions: An Empirical Study
Sabah M. Al-Najjar,Maha K. Jawad
International Journal of Business Administration , 2011, DOI: 10.5430/ijba.v2n3p118
Abstract: Despite the widespread use of ISO 9001 and the many certified organizations in the Arab countries, only five Iraqi organizations were ISO certified at the end of 2008. The purpose of this empirical study is to examine the various barriers and misconceptions that impede ISO 9001 implementation in the service and manufacturing sectors in Iraq. In order to identify these factors a structured survey was conducted using a random sample of 50 directors in service and manufacturing organizations in Baghdad. The analysis of the survey revealed nine important factors that hinder the implementation of the standards; lack of top management commitment heads the list. In addition, ten misconceptions were identified by this study, including the top ranked belief that ISO 9001 uncovers job security. The study suggested the need to formulate a national strategy to meet the emerging ISO requirements which will enable Iraqi organizations to achieve superior quality of goods and services. This study contributes to the body of knowledge in the area of quality management systems with particular interest on Iraq. The findings of this work are limited by the sample surveyed and the geographical limits, however, the findings reached carry many implications for policy- makers in Iraq.
The Psychometric Properties of a Jordanian Version of Overexcitability Questionnaire-Two, OEQII  [PDF]
Sabah Hasan Al-Onizat
Creative Education (CE) , 2013, DOI: 10.4236/ce.2013.41008

This study deals with the psychometric properties and derivation of norms for an Arabic version of the Overexcitability Questionnaire-Two, OEQII. The standardization sample consisted of 289 students (159 males, 130 females) ranging from 15-17 years in age. Factor analysis and one-way ANOVA reveals a good construct, factorial, and discriminatory validity. The Cronbach-a formula was used to estimate internal consistency coefficients. All the results indicate acceptable reliability for the OEQII. The Overexcitabilities scores were distributed normally in terms of the age range. And the Deviation for the Overexcitabilities degrees and percentiles were calculated for each group of the sample. Finally, results indicated no statistical difference at (α=0.05) among males and females students in the total scale, the female tended to do better in the overall average of the OEQII andin Sensual and in Emotional Overexcitability: Overall, the OEQII appears to have acceptable psychometric characteristics allowing for use instrument to promote the use of strength-based learning activities to enhance instructional practice and personal improvement.

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