Efficiency of Personal and Administrative Skills for Managerial Leadership on Administrative Creativity at Najran University

This research aims to identify the level of personal skills and leadership management at the Najran University in Saudi Arabia. And the efficiency of those skills in administrative creativity. Research sample amounted (39) administrative leaders at Najran University. Researchers designed two questionnaires for measuring personal and administrative skills. First one aimed to measure personal skills& administrative skills consist of (30) statements divided into two Axis (personal skills16 statements - administrative skills 14 statements). The second one to measure administrative creativity of leadership consists of 21 statements. The most important results showed a high level of personal and administrative skills and medium level of administrative creativity to Najran University administrative leaders as well as a positive correlation between both personal and administrative variables and the level of administrative creativity. Keywords: skills, administrative creativit

The Impact of Implementing Quality Management System (ISO 9001: 2008) on the Job Performance of Employees at Najran University

This research aimed to assess the impact of implementation of ISO 9001: 2008 on the job performance of employees in the Vice Presidency for Development & Quality – Najran University (VPDQ-NU). Researchers used a Quasi-experimental and descriptive method. For the Quasi-experimental method, the total sample size was (15 employee) who Stayed in the job for two consecutive years (2012/2013, 2013/2014) and received their evaluation of job performance from VPDQ-NU. For the descriptive method, researchers used the results of Internal Audit action records and designed a questionnaire to achieve research objectives. Twenty-two employees in VPDQ-NU responded to the questionnaire. The result of this research from three sources (Quasi-experimental - Internal Audit action records - Designed questionnaire) shows that there is positive effectiveness of ISO 9001:2008 to improve job performance of employees in VPDQ-NU. Based on this research, a key recommendation is the mainstream implementation of quality management system (ISO 9001: 2008) at all administrations and departments in the Najran University to ensure continuous improvement of the job performance of employees. Keywords: ISO 9001: 2008, Job performance, Quality management syste

Optimizing the Dynamic Performance of a Wind Driven Standalone DFIG Using an Advanced Control Algorithm

The article seeks to improve the dynamic performance of a standalone doubly fed induction generator (DFIG) which driven by a wind turbine, with the help of an effective control approach. The superiority of the designed predictive controller can be confirmed through evaluating the performance of the DFIG under other control algorithm, which is the model predictive direct torque control (MPDTC), model predictive current control (MPCC) as classic types of control. Firstly, the operating principles of the two controllers are described in details. After that, a comprehensive comparison is performed among the dynamic performances of the designed MPDTC, MPCC techniques and the predictive control strategy, so we can easily present the merits and deficiencies of each control scheme to be able to easily select the most appropriate algorithm to be utilized with the DFIG. The comparison is carried out in terms of system simplicity, dynamic response, ripples’ content, number of performed commutations and total harmonic distortion (THD). The results of the comparison prove the effectiveness and validation of our proposed predictive controller; as it achieves the system simplicity, its dynamic response is faster than that of MPDTC and MPCC, it presents a lower content of ripples compared to MPDTC and MPCC. Moreover, it can minimize the computational burden, remarkably. Furthermore, the numerical results are showing a marked reduction in the THD with a percentage of 2.23 % compared to MPDTC and 1.8 % compared to MPCC. For these reasons, it can be said that the formulated controller is the most convenient to be used with the DFIG to achieve the best dynamic performance

The In-hospital prognostic value of high sensitivity C-reactive protein in STEMI patients treated by thrombolysis versus primary

Introduction: Coronary artery disease (CAD) is considered a major causative agent of mortality and morbidity. Many reports recommended the use of C-reactive protein (CRP) as an inflammatory marker for its high sensitivity that could help in prevention of CAD.Objective: This work aimed to clarify the in-hospital prognostic value of high-sensitivity CRP (hs-CRP) in ST-elevation myocardial infarction (STEMI) cases who are treated by thrombolysis vs. primary percutaneous coronary intervention (PCI) and comparing the outcome of the treatment between the two groups.Patients and methods: 48 STEMI cases were divided into two groups in this cross-section study: Patients in group A had Primary PCI, whereas those in group B received thrombolysis treatment. Patients were evaluated by history, examinations, investigations and coronary angiography.Results: Most of patients had grade II mitral regurge (68.8%) with statistical insignificant differences between the study groups. Most of patients had wall motion abnormalities in anterior septum (43.8%) with statistical insignificant difference between groups. In this study, 41.7% of patients had positive troponin with statistical insignificant difference between groups. According to distribution of patients as regards outcomes, died patient and patients with heart failure had significantly higher median of first- and second-hour CRP than patients without adverse eventsConclusion: Impaired reperfusion was correlated with higher hs-CRP compared to optimal reperfusion. This study was conducted on CRP so further investigation with larger population size are necessary especially for inflammatory cascade

Pre-column dervatization of amino acids from nigella sativa L seed hydrolysates by reversed phase HPLC

A rapid and sensitive method for analysis of amino acid hydrolysates of nigella sativa L seed has been developed using O-phthaldialehyde(OPA ) as a pre-column derivatizing agent. OPA reagents in the presence of mercaptoethanol react rapidly with primary amino acids ( less than 60 sec.) to form isindole derivatives which easily separated with good selectivity on ODS column. Resolution of amino acid derivatives is carried out with a methanol gradient in 0.01 maqueous sodium acetate. pH 7.1 . The quantitation of amino acid derivatives is reproducible within an average relative deviation of + 1.4% the linearity for most amino acids were more than 0.9993 with detection limit of 0.2 ppm. 15 amino acid were detected in the analysis of the seed protein hydrolysate. The presence of glutamic acid, alanine, leucine, cystine phenylalanine, aspartic acid in large quantities. The common separated amino acids were detected by U.V at 338 nm within 21 minutes

New Perspectives on Integrable Hamiltonian Systems via the Algebraic Geometry of Twisted Hitchin Moduli Spaces: A Case Study on the Calogero-Franc¸oise Integrable System

Integrable systems are dynamical systems that exhibit very special properties. These systems are exactly solvable, have deep connections with algebraic geometry, and give rise to a maximal set of conserved quantities. Integrable systems have proven to be essential as they arise naturally in various branches of mathematics and physics such as differential and algebraic geometry, partial differential equations, statistical mechanics, quantum field theories, string theory and even more. One of the unique features of integrable systems is that all known integrable systems seem to be inherently related in some sense. This special feature has inspired many mathematicians to attempt and find a single origin of all known integrable systems. One of the most prominent approaches towards this unification process is through realizing different integrable systems as symmetry reductions of the self-dual-Yang-Mills (SDYM) equations. In fact, most known integrable systems (at least in lower dimensions) fit in this paradigm and this thesis is a further step towards this unification. Four integrable systems are in the central attention of this thesis. Namely, these are Euler’s equations for the motion of a rigid body, Nahm’s equations, the Hitchin system, and the the Calogero-Fran¸coise integrable system. Euler’s equations are the most classical example of an integrable system. Moreover, Nahm’s equations are obtained as a dimensional reduction of the SDYM equations to one dimension. Furthermore, the Hitchin system is an algebraically completely integrable system that arises as the space of solutions to Hitchin’s equations. Hitchin’s equations are a coupled system of non-linear partial differential equations that arise as a dimensional reduction of the SDYM equations to two dimensions. Finally, the Calogero-Fran¸coise (CF) integrable system is a finite-dimensional Hamiltonian system that arises as a generalization of the Camassa Holm (CH) dynamics. In this thesis, we show that the dynamics of Euler’s equations and the CF system can be perceived by realizing both systems as twisted Hitchin systems. More specifically, we obtain an explicit solution to Euler’s equations by transforming them to Nahm’s equations and then studying the evolution of the Higgs field of Nahm’s equations. The solution method is different from the classical ones since we used a different formulation than the one usually presented in the literature. More specifically, we formulated the problem on the Lie algebra su(2) rather than formulating it on so(3) as usually done. Furthermore, we study the dynamics of the Calogero-Fran¸coise (CF) integrable system while focusing on the special case of peakon anti-peakon interactions (d = 2). We show explicitly by embedding the CF system into a (twisted) Hitchin system that the CF dynamics is completely governed by the evolution of the corresponding Higgs field. In particular, we show that different singularities in the CF system correspond to very special Higgs fields in the underlying Hitchin system. Furthermore, we show that a periodization (compactification) of the CF dynamics corresponds to a compactification of the underlying Hitchin system. This result is then a direct manifestation of the correspondence between the CF dynamics and the dynamics of the associated Higgs field in the underlying Hitchin system