189 research outputs found
The Impact of Commitment-Based Human Resources Practices on Psychological Well-Being by Mediating Passion for Work. An Analytical Study of The Viewpoints of a Sample of Workers at The Holy Karbala Education Directorate
The research aims to explore the mediating role of passion for work in strengthening the relationship between adopting commitment-based human resources practices and achieving psychological well-being among workers in the Holy Karbala Education Directorate. The field of research, as the intellectual problem of the research, was represented by the central question: Does adopting commitment-based human resources practices in the Directorate contribute to... Raising the Holy Karbala in enhancing psychological well-being through the mediating role of passion for work? The research was applied in the Holy Karbala Education Directorate on a random sample of (196) respondents from workers in the studied directorate using a questionnaire form that was designed specifically for this project. Through the utilization of SPSS V AMOS 24.26, a collection of statistical techniques, such as structural equation modeling and path analysis, were utilized in order to conduct the analysis of the data. The researcher reached a set of conclusions, the most important of which is the existence of a correlation and direct, significant influence between the research variables, as well as the presence of an indirect, significant influence of passion for work in the relationship between adopting human resources practices based on commitment and enhancing psychological well-being among workers in the studied directorate. Therefore, on the basis of the findings that the researcher obtained, she was able to formulate a number of recommendations to improve levels of response to work requirements, the most important of which are establishing written, clear and precisely defined recruitment and appointment procedures, the Directorate’s reliance on various training programs in line with the variables of the global environment, and the necessity of the Directorate granting incentives and rewards to employees based on Established standards, as well as the need to continuously develop the incentives and rewards system in the directorat
The Impact of Commitment-Based Human Resources Practices on Psychological Well-Being by Mediating Passion for Work. An Analytical Study of The Viewpoints of a Sample of Workers at The Holy Karbala Education Directorate
The research aims to explore the mediating role of passion for work in strengthening the relationship between adopting commitment-based human resources practices and achieving psychological well-being among workers in the Holy Karbala Education Directorate. The field of research, as the intellectual problem of the research, was represented by the central question: Does adopting commitment-based human resources practices in the Directorate contribute to... Raising the Holy Karbala in enhancing psychological well-being through the mediating role of passion for work? The research was applied in the Holy Karbala Education Directorate on a random sample of (196) respondents from workers in the studied directorate using a questionnaire form that was designed specifically for this project. Through the utilization of SPSS V AMOS 24.26, a collection of statistical techniques, such as structural equation modeling and path analysis, were utilized in order to conduct the analysis of the data. The researcher reached a set of conclusions, the most important of which is the existence of a correlation and direct, significant influence between the research variables, as well as the presence of an indirect, significant influence of passion for work in the relationship between adopting human resources practices based on commitment and enhancing psychological well-being among workers in the studied directorate. Therefore, on the basis of the findings that the researcher obtained, she was able to formulate a number of recommendations to improve levels of response to work requirements, the most important of which are establishing written, clear and precisely defined recruitment and appointment procedures, the Directorate’s reliance on various training programs in line with the variables of the global environment, and the necessity of the Directorate granting incentives and rewards to employees based on Established standards, as well as the need to continuously develop the incentives and rewards system in the directorat
Homotopy Analysis Method for Solving Non-linear Various Problem of Partial Differential Equations
In this paper, solve several important equations such as korteweg-devries (kdv) problem, Boussinesq equation of non-homogeneous problem and non-homogeneous system Hirota-Satsuma problem of partial differential equation by Homotopy analysis method (HAM). Studied comparison exact solution with numerical results , this method have shown that is very effective and convenient and gives numerical solutions in the form of convergent series with easily computable components for solving non-linear various problem of partial differential equation . Keywords: Homotopy analysis method , Approximate solution , non-linear problems of partial differential equation , analytical solution
The growth of the silver nanoparticles on the mesoporous silicon and macroporous silicon: A comparative study
Two porous silicon (PS) layers, namely mesoPS and macroPS have been prepared by electrochemical etching (ECE) and photo–electrochemical etching (PECE) processes, respectively. The surface morphology of mesoPS and macroPS reflects a different form of morphology. Silver nanoparticles (AgNPAs) have been obtained through immersion of PS samples in AgNO3 solution. The mechanism of Ag growth depends on the substrate morphology. In the case of using mesoPS substrate, the AgNPAs have sizes ranging from 0.25 to 2.25 µm, so they can’t enter inside pores and therefore they aggregate on the mesoPS surface, while by using macroPS substrate, they have sizes ranging from 0.1 to 1.5 µm, decorate the inner of the pores and the separate Ag nanoaggregates form on the macroPS surface. The highest SERS has been obtained for AgNPAs/macroPS substrate rather than AgNPAs/mesoPS substrate. The enhancement factor (EF) values achieved by using AgNPAs deposited on macroPS and mesoPS substrates are about (1.8×106) and (3.2×104), respectively
Application the Kanban Cards and the Value Stream Map (Vsm) to Rationalize Inventory Costs and to Improve The Company's Performance and Oversight Applied Research in Electrical Cables Factory / Ur State Company For Electrical Industries
Purpose: This research aims to try to application the two cards (kanban) system and the value stream map in the electrical cables factory in the Ur Company for Electrical Industries, with the intention of rationalizing the storage costs and improving the production, marketing and warehouse process to get rid of waste, and loss in time and cost.
Theoretical framework: This research problem emerged due to the lack of The factory application of these systems that work to solve the problem of storage accumulation as well as improving the progress of the production process, and the research hypothesis has proven that it is possible to apply the Kanban system and the value stream map in the plant under discussion.
Design/methodology/approach: The research showed the most important conclusions, including stock accumulation of various types, reduction of inventory, improvement of work flow, improvement in response to changes in customer requests, reduction of risk of obsolescence of inventory, reduction of the percentage of spoilage from (3%) to (2%), and rationalization of total production inventory from 858 tons [26 tons × 31 days] to 806 tons [ 26 tons x 33 days].
Findings: application the two cards (kanban) system and the value stream map in the electrical cables factory in the Ur Company for Electrical Industries The improvement in the current status of the Value Stream map, to the future status was carried out according to the Kaizen Burst (continuous improvements). As for the most important recommendations,
Research, Practical & Social implications: The improvement in the current status of the Value Stream map, to the future status was carried out according to the Kaizen Burst (continuous improvements).
Originality/value: This study is one of the very few studies that focus on the concept of cards (kanban) system and the value stream map it was necessary to implement the Kanban and value map system in the Cables electric plant, activating the state of transparency in the production and marketing work and facilitating the work The administrator and the need to open communication channels between the administration and workers to take advantage of the proposed views, reconsider the incentive system and link it to performance and to encourage workers to excel and drive innovation and creativity.
Effect of abiotic elicitor methyl jasmonate on production of rutin in callus cultures of Abutilon hirtum L.
A significant therapeutic plant from the Malvaceae family is Abutilon hirtum (L.). It is frequently used in traditional medicine to treat a variety of illnesses. Rutin is a flavonoid molecule with commercial value that has anticancer, nutritional, and anti-ageing properties. This research project was carried out to evaluate the effect of abiotic elicitor Methyl Jasmonate (MeJA) at concentrations 0.0, 0.01, 0.02, 0.03 mmol.L-1 on accumulation of rutin by callus cultures of Abutilon hirtum L. after 30 days of growth on Murashige and Skoog (MS) medium to which 2000 µg.L-1 2,4-Dichlorophenoxy acetic acid (2,4-D) + 500 µg.L-1 Kinetin (Kin) were added. The results showed that the best callus stems cultivated on MS growth medium fortified with 2000 µg.L-1 2,4-D + 500 µg.L-1 Kin, recorded the highest fresh weight of 2.887 g after four weeks. This induced callus was characterized by its friable texture. The data of rutin detection in cultures of callus obtained from stems explant of A. hirtum L., using High-Performance Liquid Chromatography (HPLC) indicated the presence of rutin in these cultures by comparison with the rutin standard samples containing a precisely known concentration of a substance for use in quantitative analysis.. Treatment with 0.03 mmol.L-1 of Methyl Jasmonate gave the best rutin amount of 5.606 mg.g-1 was much higher than the control treatment of 1.569 mg.g-1. These data clearly indicated that callus cultures are a potential continuous and constant source of rutin, as a secondary metabolite, and as an alternative to field plants
Kinematics Simulation of Gough-Stewart Parallel Manipulator by Using Simulink Package in Matlab Software
كووف ستيوورت هو مناور متوازي ذو ست درجات من الحرية، وله ست معادلات كينماتك(معكوس وامامي) مع ست متغيرات (اطوال, موقع, واتجاه). في هذا العمل تم اشتقاق معادلات الكينماتك المعكوسة، التي تستخدم لحساب اطوال الاذرع والتغير بالطول لها بالاعتماد على موقع واتجاه مركز القاعدة المتحركة، بعد ذلك تم اشتقاق معدلات الكينماتك الامامية التي تستخدم لحساب موقع واتجاه القاعدة العليا المتحركة بدلالة الاطوال. هذا النموذج الرياضي للتحليلي الكينماتيكي للكووف ستيوورت تم استخدامه في حزمة السميولنك في برنامج الماتلاب لحساب الاطوال، الموقع، والاتجاه للمناور عند أي زمن للحركة. المتغيرات المدخلة (الموقع والاتجاه) في المعادلات المعكوسة بالسميولنك قورنت مع المتغيرات الخارجة من المعادلات الامامية بالسميولنك واظهرت نتائج جيدة.The Gough Stewart Robotic manipulator is a parallel manipulator with six-degree of freedom, which has six equations of Kinematics (Inverse and forward), with six variables (Lengths, Position, and Orientation). In this work derived the inverse equations, which used to compute the lengths of the linkages and its changes depended on the position and orientation of the platform's center, then derived the forward equations to calculate the position and orientation of the moving platform in terms of the lengths. This theoretical model of the kinematics analysis of the Gough Stewart has been built into the Simulink package in Matlab to obtain the lengths, position, and orientation for the manipulator at any time of motion. The input parameters (Position and Orientation) in inverse blocks compared with the output parameters (Position and Orientation) in the forward blocks, which show good results
Dynamic Analysis of Gough Stewart Robot Manipulator by Using Lagrange Formulation in Matlab Software
في هذا البحث، استخدم الروبوت المتوازي كووف ستيوورت له ست درجات من الحرية كنموذج لاشتقاق معادلات الكينماتك المعكوسة والمعادلات الديناميكية العكسية. إن اشتقاق التحليل الكينماتيك العكسي بسيط جداً الذي يستخدم لحساب مصفوفة جاكوبيان وأطوال الارجل لتحديد مسار المنصة المتحركة. المعادلة الديناميكية اشتقت بطريقة لاكرانج من خلال حساب الطاقة الحركية والكامنة للنموذج. المعادلة الديناميكية تم ادخالها في قالب السميولنك كملف ماتلاب تؤدي إلى حساب قوى الارجل في أي وقت من المحاكاة ويمكن استخدامها لبيان ما إذا كان المسار يحتوي على شذوذ حيث تتزايد القوى بسرعة كبيرة في نقطة الشذوذ مقارنة بالنقاط الأخرى أثناء مسار المنصة المتحركة. أخيرا يمكن استخدام هذه القالب في النماذج الأخرى مع مدخلات مختلفة.In this paper, Gough Stewart parallel manipulator with six-degree of freedom used as a model to derived the inverse kinematics equations and inverse dynamic equations. The inverse kinematic problem is very simple to derive then used to computed the jacobian matrix and the lengths of the linkages to determine the path trajectory of the moving platform. The dynamic equation based on the Lagrange method by calculated the kinetic and potential energies for the model. The dynamic equation inserted in Simulink block as Matlab file lead to computed the forces of the linkages at any time of simulation and can be used to explain if the path contain a singularities where the forces increasing very quickly in singular point compare with other points during the path of the moving platform. Finally, these blocks can be used in the other models with different parameters inputs
Modeling of Gough Stewart Robot Manipulator Inverse Kinematics by Using MSC ADAMS Software
كووف ستيوورت هو روبوت متوازي له ست درجات حرية، وله ست معادلات كينماتك مع ست متغيرات. في هذا البحث تم نمذجة معادلاته باستخدام البرنامج ((MSC ADAMSبالاعتماد على المعادلات الكينيماتكية له. في هذا البحث تم بناء نموذج للستيوورت وتم تحركيه بالاعتماد على معادلات الحركة العكسية له. وبعد ذلك يتم مقارنة النتائج المحصلة من البرنامج مع النتائج النظرية والتي تم احتسابها.The Gough Stewart Robotic manipulator is a parallel manipulator with six-degree of freedom, which has six equations of inverse and forward with six variables. This paper model of the Gough Stewart has been built into the MSC ADAMS software and its motion based on the inverse equations of the Stewart. Then compare the obtained results from the software with the results, which obtained from theoretical model
Determination of Aflatoxin in the Blood of Patients with Hepatopathy and Evaluation its Effect on some Immune Parameters
Background: Aflatoxin-producing Aspergillus species, Aspergillus flavus and Aspergillus parasiticus, are a main producer of aflatoxins, which a class of toxic molds that can cause cancer and other health issues. Aims of study: Serum aflatoxin B1 detection, both qualitative and quantitative by using TLC and HPLC techniques; serum cytokine levels are used to assess the aflatoxin's impact on the human immune system. Methods: A study was carried out between November 2023 and January 2024. Blood samples were drawn from 150 Volunteer patients who were receiving care at Tikrit hospitals. Liver function tests (AST and ALT) were measure in the hospital used an automated device, ELISA test was used to detect IL-4, TNF-a, and IL-10, while detection of serum aflatoxin B1 was done both qualitatively and quantitatively using TLC and HPLC procedures. Results and Discussion; Out of 150 sample, the results showed 87 (58%) patients with (3.995±0.450) level of Aflatoxin B1 compared with 63(42%) patients of non-AFB1 group which scored (0.14±0.007) level of AFB1, these analyses were performed using HPLC. The study results showed increasing serum liver enzymes of AFB1 group compared with non AFB1 group, the pro-inflammatory cytokines increased (16.01±1.31) for AFB1, while anti-inflammatory cytokines (IL-4, IL-10) decreased (9.96*±1.54, 4.90*±1.23) respectively. Conclusion: The study's findings suggest that toxins build up over time and can interfere with a variety of biological processes, any amount of toxin in the body is harmful. Aflatoxin changes pro- and anti-inflammatory cytokines and affects liver function
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