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Search Results: 1 - 10 of 197784 matches for " Alselaim N "
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Toward an objective assessment of technical skills: a national survey of surgical program directors in Saudi Arabia
Alkhayal A,Aldhukair S,Alselaim N,Aldekhayel S
Advances in Medical Education and Practice , 2012,
Abstract: Abdullah Alkhayal,1 Shahla Aldhukair,2 Nahar Alselaim,1 Salah Aldekhayel,1 Sultan Alhabdan,1 Waleed Altaweel,3 Mohi Elden Magzoub,4 Mohammed Zamakhshary1,21Department of Surgery, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia; 2Public Health Section, King Abdullah International Medical Research Center, Riyadh, Saudi Arabia; 3Urology Department, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia; 4Department of Medical Education, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi ArabiaBackground: After almost a decade of implementing competency-based programs in postgraduate training programs, the assessment of technical skills remains more subjective than objective. National data on the assessment of technical skills during surgical training are lacking. We conducted this study to document the assessment tools for technical skills currently used in different surgical specialties, their relationship with remediation, the recommended tools from the program directors’ perspective, and program directors’ attitudes toward the available objective tools to assess technical skills.Methods: This study was a cross-sectional survey of surgical program directors (PDs). The survey was initially developed using a focus group and was then sent to 116 PDs. The survey contains demographic information about the program, the objective assessment tools used, and the reason for not using assessment tools. The last section discusses the recommended tools to be used from the PDs’ perspective and the PDs’ attitude and motivation to apply these tools in each program. The associations between the responses to the assessment questions and remediation were statistically evaluated.Results: Seventy-one (61%) participants responded. Of the respondents, 59% mentioned using only nonstandardized, subjective, direct observation for technical skills assessment. Sixty percent use only summative evaluation, whereas 15% perform only formative evaluations of their residents, and the remaining 22% conduct both summative and formative evaluations of their residents’ technical skills. Operative portfolios are kept by 53% of programs. The percentage of programs with mechanisms for remediation is 29% (19 of 65).Conclusion: The survey showed that surgical training programs use different tools to assess surgical skills competency. Having a clear remediation mechanism was highly associated with reporting remediation, which reflects the capability to detect struggling residents. Surgical training leadership should invest more in
Toward an objective assessment of technical skills: a national survey of surgical program directors in Saudi Arabia
Alkhayal A, Aldhukair S, Alselaim N, Aldekhayel S, Alhabdan S, Altaweel W, Magzoub ME, Zamakhshary M
Advances in Medical Education and Practice , 2012, DOI: http://dx.doi.org/10.2147/AMEP.S31720
Abstract: ward an objective assessment of technical skills: a national survey of surgical program directors in Saudi Arabia Original Research (865) Total Article Views Authors: Alkhayal A, Aldhukair S, Alselaim N, Aldekhayel S, Alhabdan S, Altaweel W, Magzoub ME, Zamakhshary M Published Date October 2012 Volume 2012:3 Pages 97 - 104 DOI: http://dx.doi.org/10.2147/AMEP.S31720 Received: 12 March 2012 Accepted: 02 April 2012 Published: 10 October 2012 Abdullah Alkhayal,1 Shahla Aldhukair,2 Nahar Alselaim,1 Salah Aldekhayel,1 Sultan Alhabdan,1 Waleed Altaweel,3 Mohi Elden Magzoub,4 Mohammed Zamakhshary1,2 1Department of Surgery, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia; 2Public Health Section, King Abdullah International Medical Research Center, Riyadh, Saudi Arabia; 3Urology Department, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia; 4Department of Medical Education, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia Background: After almost a decade of implementing competency-based programs in postgraduate training programs, the assessment of technical skills remains more subjective than objective. National data on the assessment of technical skills during surgical training are lacking. We conducted this study to document the assessment tools for technical skills currently used in different surgical specialties, their relationship with remediation, the recommended tools from the program directors’ perspective, and program directors’ attitudes toward the available objective tools to assess technical skills. Methods: This study was a cross-sectional survey of surgical program directors (PDs). The survey was initially developed using a focus group and was then sent to 116 PDs. The survey contains demographic information about the program, the objective assessment tools used, and the reason for not using assessment tools. The last section discusses the recommended tools to be used from the PDs’ perspective and the PDs’ attitude and motivation to apply these tools in each program. The associations between the responses to the assessment questions and remediation were statistically evaluated. Results: Seventy-one (61%) participants responded. Of the respondents, 59% mentioned using only nonstandardized, subjective, direct observation for technical skills assessment. Sixty percent use only summative evaluation, whereas 15% perform only formative evaluations of their residents, and the remaining 22% conduct both summative and formative evaluations of their residents’ technical skills. Operative portfolios are kept by 53% of programs. The percentage of programs with mechanisms for remediation is 29% (19 of 65). Conclusion: The survey showed that surgical training programs use different tools to assess surgical skills competency. Having a clear remediation mechanism was highly associated with reporting remediation, which reflects the capability to detect struggling residents. Surg
Constructing a question bank based on script concordance approach as a novel assessment methodology in surgical education
Aldekhayel Salah A,ALselaim Nahar A,Magzoub Mohi,AL-Qattan Mohammad M
BMC Medical Education , 2012, DOI: 10.1186/1472-6920-12-100
Abstract: Background Script Concordance Test (SCT) is a new assessment tool that reliably assesses clinical reasoning skills. Previous descriptions of developing SCT-question banks were merely subjective. This study addresses two gaps in the literature: 1) conducting the first phase of a multistep validation process of SCT in Plastic Surgery, and 2) providing an objective methodology to construct a question bank based on SCT. Methods After developing a test blueprint, 52 test items were written. Five validation questions were developed and a validation survey was established online. Seven reviewers were asked to answer this survey. They were recruited from two countries, Saudi Arabia and Canada, to improve the test’s external validity. Their ratings were transformed into percentages. Analysis was performed to compare reviewers’ ratings by looking at correlations, ranges, means, medians, and overall scores. Results Scores of reviewers’ ratings were between 76% and 95% (mean 86% ± 5). We found poor correlations between reviewers (Pearson’s: +0.38 to 0.22). Ratings of individual validation questions ranged between 0 and 4 (on a scale 1–5). Means and medians of these ranges were computed for each test item (mean: 0.8 to 2.4; median: 1 to 3). A subset of test items comprising 27 items was generated based on a set of inclusion and exclusion criteria. Conclusion This study proposes an objective methodology for validation of SCT-question bank. Analysis of validation survey is done from all angles, i.e., reviewers, validation questions, and test items. Finally, a subset of test items is generated based on a set of criteria.
Implementation of a Higher Quality dc Power Converter  [PDF]
N. N. Barsoum
Journal of Electromagnetic Analysis and Applications (JEMAA) , 2010, DOI: 10.4236/jemaa.2010.22012
Abstract: Many single and three-phase converters are well developed, and covered up in most of electric markets. It is used in many applications in power systems and machine drives. However, an exact definite output signal from the dc side still not recognized. The waveforms of output voltage and current demonstrate an imperfect dc signal and constitute losses, harmonic distortion, low power factor, and observed some ripples. An approximately perfect rectifier bridge is the aim of this research. Perhaps it gives the ability to identify the parameters of the converter to obtain, as much as possible, a perfect dc signal with less ripple, high power factor and high efficiency. Design is implemented by simulation on Power Simulator PSIM, and practically, a series regulator LM723 is applied to provide regulating output voltage. Comparisons of both simulation and hardware results are made to observe differences and similarities.
Estimation of Sensitivity of the DS/AHP Method While Solving Foresight Problems with Incomplete Data  [PDF]
N. Pankratova, N. Nedashkovskaya
Intelligent Control and Automation (ICA) , 2013, DOI: 10.4236/ica.2013.41011
Abstract:

The paper provides mathematical analysis of sensitivity of different combination rules in the DS/AHP method when an alternative is added to the set of decision alternatives while solving foresight problems. Different cases of rank reversals are defined and two sets of conditions for these cases using the method DS/AHP are considered. Rank reversals are illustrated when the DS/AHP method is used to solve practical problem of critical technologies of energy conservation and power efficiency evaluation in Ukraine. It is shown that the DS/AHP method is not sensitive to exclusion (or addition) of an irrelevant decision alternative from (or to) the set of decision alternatives.

The Study of the Secrets of the Genetic Code  [PDF]
N. N Kozlov
Journal of Computer and Communications (JCC) , 2018, DOI: 10.4236/jcc.2018.67007
Abstract: The disclosure of many secrets of the genetic code was facilitated by the fact that it was carried out on the basis of mathematical analysis of experimental data: the diversity of genes, their structures and genetic codes. New properties of the genetic code are presented and its most important integral characteristics are established. Two groups of such characteristics were distinguished. The first group refers to the integral characteristics for the areas of DNA, where genes are broken down in pairs and all 5 cases of overlap, allowed by the structure of DNA, were investigated. The second group of characteristics refers to the most extended areas of DNA in which there is no genetic overlap. The interrelation of the established integral characteristics in these groups is shown. As a result, a number of previously unknown effects were discovered. It was possible to establish two functions in which all the over-understood codons in mitochondrial genetic codes (human and other organizations) participate, as well as a significant difference in the integral characteristics of such codes compared to the standard code. Other properties of the structure of the genetic code following from the obtained results are also established. The obtained results allowed us to set and solve one of the new breakthrough problems—the calculation of the genetic code. The full version of the solution to this problem was published in this journal in August 2017.
Change of the Microorganisms Quantity in Irrigative Gleyey-Yellow under Vegetable Soils  [PDF]
N. ?. Orudzheva
American Journal of Plant Sciences (AJPS) , 2012, DOI: 10.4236/ajps.2012.312213
Abstract: The results of the long-term investigations in dynamics for study of the conditions of taxonomic groups of microorganisms of irrigated gleyey-yellow soils of the subtropical zone under vegetable crops in rotation with the continuous growing of these cultures have been presented. The results of the researches study demonstrated an important vibration of the microorganisms quantity under growing cultures happens. The most quantity of microorganisms, consuming organic nitrogen is observed in irrigative gleyey-yellow soils of the humid subtropical zone. Intensity of mineralization of organic matters was lower in irrigative gleyey-yellow soils. A quantity of microorganisms was lower, but a coefficient of mineralization was higher under continuous cultures as compared the analogous soils under crop rotation. These data show that a type of the soil influence on the rhizosphere microflora insignificantly, while plant shows a significant effect on its quantity and compositions.
Wavelet-Based Density Estimation in Presence of Additive Noise under Various Dependence Structures  [PDF]
N. Hosseinioun
Advances in Pure Mathematics (APM) , 2016, DOI: 10.4236/apm.2016.61002
Abstract: We study the following model: \"\". The aim is to estimate the distribution of X when only \"\"?are observed. In the classical model, the distribution of \"\"?is assumed to be known, and this is often considered as an important drawback of this simple model. Indeed, in most practical applications, the distribution of the errors cannot be perfectly known. In this paper, the author will construct wavelet estimators and analyze their asymptotic mean integrated squared error for additive noise models under certain dependent conditions, the strong mixing case, the β-mixing case and the ρ-mixing case. Under mild conditions on the family of wavelets, the estimator is shown to be \"\"-consistent and fast rates of convergence have been established.
Naltrexone and Scopolamine Rapidly Reduce Symptoms of Major Depressive Disorder (MDD): A Double Blinded Randomized Controlled Pilot Study  [PDF]
N. Taub
Open Journal of Depression (OJD) , 2019, DOI: 10.4236/ojd.2019.81001
Abstract: Background: Scopolamine and naltrexone are FDA approved medications that have been utilized off label for the indication of major depressive disorder (MDD). We examined the efficacy of the 2 medications in combination for major depression. Methods: 14 adults (7 female and 7 males) with current major depressive disorder were randomized by coin flip to 0.15 mg BID of scopolamine and 1 mg BID naltrexone or placebo for a total of 4 weeks. Modified MDRS questionnaires were utilized to monitor progress in depression symptomatology. The placebo patients were crossed over to the active medications subsequent to the 4 week trial period. Results: 2 subjects dropped out of the trial as a result of side effects. A total of 12 subjects completed the trial. The average reduction in Modified MDRS scores over the 4 weeks for the active medications was 12.5. The average reduction noted in control patients was 3.5. This difference was statistically significant with P = 0.03, less than 0.05 for a greater than 95% confidence interval utilizing Student’s T test analysis. Of the 4 patients that crossed over to the active medications three additional patients noted a partial or complete response to the medications with an average reduction and Modified MDRS scores of 8. No washout periods were utilized before the trial or for the crossover period. Conclusion: The combination of scopolamine and naltrexone demonstrated significant benefit for MDD.
Semi Numerical Solution for a Boundary Value Problem  [PDF]
N.P. Pai, N. N. Katagi, Krishna B. Chavaraddi
American Journal of Computational Mathematics (AJCM) , 2013, DOI: 10.4236/ajcm.2013.31006
Abstract:

The flow of viscous incompressible fluid through a tube is considered. The similarity transformation is used to reduce the governing equations into nonlinear ordinary differential equation. The solution procedure includes application of long series analysis with polynomial coefficients. The series representing physical parameters (\"\" ) reveal qualitative features which are comparable to pure numerical results. The analysis enables in extending region of validity. A complete description of the solutions is presented.

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