bluuebunny/crossref_metadata_2025_split huggingface dataset:
Theoretical Study of the Effect of Thermal Stress on Transversal Damage of Hybrid Biocomposite Materials Flax-hemp/Polyethylene
Authors: Mokaddem Allel , Doumi Bendouma , Belkheir Mohammed , Boutaous Ahmed , Temimi Elhouari 
Published: May 2021

Background:
The objective of sustainable development in the field of materials necessitates
and demands the substitution of the basic constituents of a composite material (carbon,
glass, etc.) by natural reinforcements, which have a very important role in the protection of
the environment and to subsequently have new materials with good properties compared to socalled
traditional materials.

Objective:
In this context, we have investigated using genetic modeling based on probabilistic
models the effect of thermal stress on transversal damage of a bio-composite hybrid Flax-
Hemp/PE material.

Methods:
Our model genetic is based on probabilistic models of Weibull and the different values
of the thermal stress were calculated by the Lebrun equation. To validate our theoretical calculations,
we used the nonlinear parameter β in the Hoock law of the nonlinear acoustic technique
to trace the curves of the damage under the mechanical and thermal stress.

Results:
The results obtained with a genetic simulation are in good agreement with the results
found by Clément Gourier and Raphaël Kueny, who have shown that flax and hemp fibers
(bark/Liberian fibers) are good reinforcements of the Polyethylene matrix; we found also found
that our hybrid biocomposite material Flax-Hemp/PE is resistant in particular, a part of this material
is of plant origin and gives us environmental benefit.

Conclusion:
It should be noted that the results obtained by the genetic simulation are in good
agreement with the results obtained by the nonlinear acoustic technique mentioned by the green
curve in all the figures. In perspective, it would be interesting to see, later, the effect of humidity
on the damage of the matrix fiber interface of a hybrid biocomposite.
José Óscar Ávila Juárez, Acero. Nacionalismo y neoliberalismo en México. Historia de la Siderúrgica Lázaro Cárdenas-Las Truchas, s.a., México, Universidad Autónoma de Querétaro, 2011, 446 p., cuadros, gráficas y mapas.
Authors: Oikión Solano Veronica 
Published: May 2021

La obra fue elaborada mediante una combinación de enfoques de la historia de las empresas y de la historia empresarial, a través de las cuales el autor ha puesto atención preferencial a la revisión histórica del desempeño, la lógica y las estrategias de ciertos empresarios innovadores y de grupos de empresarios de vanguardia, así como al análisis de los cambios industriales que son parte y reflejo de las transformaciones económicas y sociales del país en su conjunto.
Claves didácticas en un manual de astronomía: De Sphaera Mundi de Sacrobosco
Authors: Gómez Martínez Marta 
Published: May 2021

En este artículo se analizan aquellos aspectos estructurales y conceptuales de carácter didáctico presentes en las traducciones al castellano de De Sphaera Mundi de Sacrobosco, el que fuera el manual de astronomía empleado en la universidad europea occidental desde el siglo XIII hasta el XVII Las opciones que presentan los traductores, ya se refieran a la estructura del libro, a la disposición de los contenidos o la elección del léxico de especialidad, muestran las claves didácticas de este manual, esto es, la intención del autor por transmitir el conocimiento especializado. De Sphaera Mundi recoge los contenidos básicos sobre el universo que venían circulando desde la Antigüedad, por lo que resultaba un manual fundamental como introducción al estudio de la ciencia del cielo y las estrellas.
El metabolismo social: una nueva teoría socioecológica
Authors: Toledo Víctor M. 
Published: May 2021

A la memoria de Alfred Schmidt (1931-2012) Ante la necesidad de construir marcos conceptuales que permitan realizar análisis congruentes sobre las relaciones entre los procesos naturales y los procesos sociales desde una perspectiva holística o integradora, el artículo lleva a cabo una narrativa de la teoría del metabolismo social, uno de los instrumentos propuestos en la última década para comprender la compleja realidad actual. Para ello se hace una breve revisión de los orígenes del concepto y una síntesis de sus principales significados. El ensayo termina llamando la atención sobre el potencial teórico del concepto, no obstante que existen diferentes interpretaciones y versiones del mismo.
Job satisfaction and its impact on employee performance: الرضا الوظيفي وأثره على أداء العاملين
Authors: Abdullah Khaled Salim Al - Maaitah  
Published: May 2021

This study aims to try to identify the effect of job satisfaction on the performance of employees in the Jordanian Phosphate Mines Company Ltd (JPMC),it investigates the effects of salaries, incentives, bonuses, relationship with immediate supervisor, colleagues, work environment, justice, and some personal characteristics such as gender, age, marital status, experiences and academic qualifications on job satisfaction ,The study descriptive analytical methods to arrive at results, the SPSS was used to process the available data A questionnaire was adopted to achieve the purposes of this study and test its hypotheses the study which included 227 participants found out some results as :The findings show that the degree of job satisfaction at the JPMC is moderate with a statistical significance of 3.11 which demonstrates a moderate degree of satisfaction and There is Positive correlation between the degree of job satisfaction and their performances at JPMC ,and The degree of job satisfaction pertaining to salaries, incentives and bonuses affects employees performance at the JPMC Based on the result , the study arrived at the following : The importance of linking incentives and salaries to the current increase in prices and Paying more attention to the employees suggestions. And Involving employees in courses and seminars.
The Effect of Good Management Planning on The Performance of Employees of Al-Imam General Hospital: أثر تخطيط القوى العاملة الجيد على أداء العاملين بالقطاع الصحي: دراسة ميدانية على العاملين بمستشفى الإيمان العام بالرياض
Authors: Abdan Shaher Alotaibi, Omar Ali Al-Sagheer Sumaida  
Published: May 2021

The study aimed to identify the impact of good administrative planning on the performance of health sector workers. A field study on employees of Al-Eman General Hospital in Riyadh, and the study followed the descriptive analytical approach. The study population consisted of employees in Al-Eman General Hospital in Riyadh, and the sample size reached 63 employees in Al-Eman General Hospital in Riyadh Where the questionnaire was relied upon as a data collection tool, and the SPSS statistical analysis program was used to analyze the study data. The study reached a number of results, the most important of which are: The workforce planning has an impact on the job performance of the employees of Al-Iman Hospital, and it is largely applied and based on the results, that there is a statistically significant relationship between the practice of continuous workforce planning and job performance, as well as the absence of a significant effect in the workforce planning practice. Likewise, manpower planning is an appropriate way to track performance, but it is not sufficient, and this necessitates the need for control to be seen as entering the institution's work and role. In light of this, the study recommends the following: - The imperative of a planning system by the management of the institution that corresponds to the aspirations of the institution in the first place, and contributes even a little to raising and improving the level of performance it has. - Forming specialized committees entrusted with the task of designing the planning structure, its regulations, procedures, supervising its implementation and making it understandable and clear by the institution. - Using planning methods and approaches that contribute to assessing performance in every objectivity and do not cause embarrassment to the institution.
The role of mission and vision and the strategic objectives of the university on the social responsibility of faculty members in Saudi universities: دور الرسالة والرؤية والأهداف الإستراتيجية الجامعية على المسؤولية المجتمعية لدى أعضاء هيئة التدريس بالجامعات السعودية
Authors: Jafar Abdullah Mousa Idris  
Published: May 2021

The aim of this study was to identify the role of the message and the heroic and the strategic objectives of the university on the social responsibility of faculty members in Saudi universities. The view of faculty members at Taif University " The social responsibility of faculty members stems from the mission of the university and its vision and objectives. The more the mission, vision and strategic goals of the university are clear to the faculty members, the more the community responsibility is clear to them and thus can be achieved. The researcher relied on the analytical descriptive approach. The questionnaire was then designed and distributed to (70) faculty members at Taif University. The questionnaire was answered. The study was based on the statistical package for social sciences (SPSS) in the analysis The study found that the university has a message, vision and strategic objectives written and clear to all faculty members. However, the university has a weak role in formulating them. There is also a lack of community responsibility in building partnerships with local community institutions and providing scientific advice to them. Institutions., And there are obstacles to their community responsibilities
The cultural consequences of using social media as recognized by university students
Authors: May Abdullah Al-amer, Fawziah Bakr Al-bakr  
Published: May 2021

The aim of the study was to identify the reasons for using Whatsapp and Snapchat as recognizedby female students and to identify the cultural consequencesof the use of Whatsapp on the behavior of the university students in respect to social and knowledge field, and to identify the cultural consequencesof the use of Snapchat in respect to cultural and educational field and identify the statistically significance differences of the views among the female university students, which are related to the variables of the study: the stage of study and the number of hours of use. the researcher used the descriptive survey approach rely on a questionnaire that consisted of (58) sentences distributed according to the fields of the study, it was applied to a sample of (503) female students of College of Education at King Saud University. Preliminary data of the study showed that 33.2% of the sample used social media daily for more than 6 hours. The study found that the most important reasons for using Whatsapp is to communicate with family, friends and entertainment. They use Snapchat for entertainment, to learn about the cultures of other peoples and to follow up the influential people with experience, and of the cultural consequencesof using Whatsapp on the behavior of the female students in the social field are spreading rumors and mislead others through unreliable advertisements, and in the field of knowledge that Being preoccupied with Whatsapp messages reduces focus on task performance and facilitates the dissemination of ideas easily, and from the cultural consequencesof using Snapchat on the behavior of the female students in the cultural field, the predominance of entertainment and formal interests among female students and its role in dissemination of values contrary to our Islamic values and customs and in the field of education Students are seeing Snapchat as a tool to gain fame and show off and brag about. Given the importance of the role played by the social media in developing the social and intellectual mobility among the female university students, the researcher recommends to pay particular attention to this age group for their keen interest in knowledge to enable them to improve their skills according to their aspirations, thus contributing to the development of their society. ، ، ، ،
Reluctance Reasons for Grade 10th Students to choose physics from their point of view in Sultanate of Oman: أسباب عزوف طلبة الصف العاشر عن اختيار مادة الفيزياء من وجهة نظرهم في سلطنة عمان
Authors: Said Mohammed Al-Kalbani, Abdulaslam Al-Adili  
Published: May 2021

The aim of study was to reveal the reasons for the reluctance of students in the tenth grade to choose physics in the Sultanate of Oman, from the point of view of the students themselves post-basic education schools. The study used the descriptive analytical approach. The sample of the study consisted of 367 students and it was selected in a stratified random method. A questionnaire was developed to answer the research questions. The results of the study showed that the reasons related to the subjects of physics and to the science teachers have a high level of influence in the reluctance of students to choose physics. The results showed statistically significant differences at the level of significance (α = 0.05) in the axis of the reasons related to physics subjects in favor of female students and differences in the axis of the reasons related to the students themselves. Consequently, the researcher recommended analyzing the subjects and the curricula of physics by specialists in the fields of education and science and redesigns them in accordance with the scientific development and levels of students according to international standards. The researcher directed school professionals to intensify guidance for 10th grade students towards the requirements of the labor market associated with physics.
The Effectiveness of Training Program Based on Bar-On Theory in Developing the Skills of Emotional Intelligence among the Talented Students at King Abdullah II Schools for Excellence in Jordan: فاعلية برنامج تدريبي يستند إلى نظرية بار-أون في تنمية مهارات الذكاء العاطفي لدى الطلبة الموهوبين في مدارس الملك عبد الله الثاني للتميز في الأردن
Authors: Ayah Shaker Abu hamour, Feryal Abd Al Hadi Shnekat  
Published: May 2021

This study aimed to examine the effectiveness of a training program based on Bar-On theory in developing the skills of emotional intelligence among the talented students at King Abdullah II Schools for excellence in Jordan. The study relied on the semi-experimental method, And the study sample consisted of (60) gifted students in the 8th and 9th grades from King Abdullah II Schools for Excellence in Al- Balqa Governorate, in the second semester of the year 2018/2019. They were chosen by the Purposive sampling from the study community, and they were divided into two groups: The control group, which consisted of (30) male and female students. The experimental group consisted of (30) male and female students, The researcher used Bar-On Scale for Emotional Intelligence - The Youth Modified Version of the Jordanian Environment adapted by Al-Oweidi (2009) for the Jordanian environment, And the researcher prepared a training program consisting of (18) training sessions distributed on the five dimensions of emotional intelligence according to the theory of Bar-On were applied to the members of the experimental sample, The study reported the following results: There were statistically significant differences between the average performance of the experimental group and the control group on the emotional intelligence scale due to the training program, in favor of the experimental group, And there were no statistically significant differences between the average performance of the experimental group and the control group on the emotional intelligence scale due to gender and grade level and interaction between the training program and gender and grade level. In light of the results of the study, it recommends the use of training programs based on theories of emotional intelligence to develop other skills such as leadership skills, communication skills, and thinking and problem-solving skills of talented students in the Hashemite Kingdom of Jordan.
Vacuum-Field Catalysis: Accelerated Reactions by Vibrational Ultra Strong Coupling
Authors: Hiura Hidefumi , Shalabney Atef 
Published: May 2021

In conventional catalysis, the reactants interact with specific sites of the catalyst in such a way that the reaction barrier is lowered by changing the reaction path, causing the reaction rate to be accelerated. Here we take a radically differentapproach to catalysis by ultra-strongly coupling the vibrations of the reactants to the infrared vacuum electromagnetic field. To demonstrate the possibility of suchvacuum-field catalysis (or cavity catalysis), we have studied hydrolysis reactions under the vibrational ultra strong coupling (V-USC) of the OH stretching mode of water to a Fabry-Pérot microfluidic cavity mode. This results in a giant Rabi splitting energy (92 meV), indicating the system is in the V-USC regime. We have found that V-USC water enhances the hydrolysis reaction rate of cyanate ions by102-fold and that of ammonia borane by 104-fold. This catalytic ability is found to depend upon the coupling ratio of the vibrational light-matter interaction. Given the vital importance of water for life and human activities, we expect that our finding not only offers an unconventional way of controlling chemical reactions by vacuum-field catalysis but also brings a fresh perspective to science and technology.
Fixation of Closed Transverse Patella Fracture with Cannulated Cancellous Screws and Anterior Tension Band Wiring- A Prospective Study
Authors: Senthil Loganathan  , Raghavendran B  , Thiyagarajan U  , Pradeep J  
Published: May 2021

Patella fractures accounts for 1% of all skeletal injuries. Patella fractures usually need to be treated with accurate reduction and fixation to obtain optimal knee function. Improper reduction of the articular fragments leads to complications like arthritis and quadriceps dysfunction. Tension band wiring and pasting are commonly performed fixation methods. Tension band wiring with K-wires is associated with wire prominence and soft tissue irritation. Cannulated cancellous screw fixation of the fracture and tension band wiring through the cannulated screws avoid the complication of wire migration and breakage. In our study, we fixed these fractures with cannulated cancellous screws and tension band. This is a prospective study done in SRMC from 2012-2017. A total of 17 Patients with transverse patella fracture are taken into a study, 4mm cannulated cancellous screws with 18 mm stainless steel wire is used for anterior tension band wiring. Extensor retinaculum closure is done for all these patients. All patients had excellent knee function, according to KSS. There was no case of implant prominence or soft issue irritation in any of these patients. One patient had extensor lag. Cannulated cancellous screw with anterior tension band wiring is a reliable, effective and reproducible technique in treating transverse patella fractures.
Importance of Different Characteristic of the Corticospinal Tract Based on DTI and Cadaveric Microdissection
Authors: KARADAG Ali , MİRKHASİLOVA Muyassar , H MİDDLEBROOKS Erik , YAGMURLU Kaan , ÇAMLAR Mahmut , BARDAKCİ Sami , ŞENOĞLU Mehmet 
Published: May 2021

Purpose: Microsurgical anatomy of the corticospinal tract, its functional role and crucial points in differential diagnosis were evaluated. There is no consensus about its differences and cerebral origin of the corticospinal tract. Tractography and cadaver dissection can help to investigate the characteristics of the corticospinal tract. Also, amyotrophic lateral sclerosis is hard to diagnose as it has common symptoms and signs with other disorders.
Methods: Three formalin-fixed human brains (six sides) were dissected by the Klingler technique in a stepwise manner from the lateral to medial and superior to inferior under 6x–40x magnification using a surgical microscope. All stages of the dissection were photographed using three-dimensional method. Lastly, we present a patient with the sign of drop foot who underwent electromyographical and radiological examination, diagnosed as atypic amyotrophic lateral sclerosis.
Results: The connections of the corticospinal tract, in particular the travel in the in trajectories of stepwise in manner cerebral origin. We demonstrated a case report with anatomic correlation to define the damage of corticospinal tract in variable levels. Crucial landmarks, connections, eloquent brain areas that related to the corticospinal tract were emphasized.
Conclusion: So that pointing the importance of such disorders to keep in mind as not to move forward with incorrect operation decision. Trajectory of one of the largest desending pathway, corticospinal tract and the relationship with different diagnosis should be considered.
Issues of improving the mechanisms for regulating the liquidity of commercial banks in developed countries
Authors: Izbosarov Boburjon Bakhriddinovich 
Published: May 2021

This article discusses the improvement of liquidity regulation mechanisms for commercial banks in developed countries. This article will consider such concepts as “liquidity”, “liquidity management”, “liquidity management mechanism”, and the existing approaches to its definition, as well as the bank’s information infrastructure, which is necessary and sufficient for the implementation of effective liquidity management. It should be noted that the emphasis will be placed on the aspects and approaches to liquidity management directly by the commercial bank itself, and not on prudential or other norms aimed at assessing the risk of a bank losing its liquidity. The purpose of this article is to consider the existing approaches to liquidity management, their advantages and disadvantages, for possible use in the future as basic ones for the planned study.
Development of scientific ideas on phase and structural transformations in steels for different application
Authors: Shilyaev P. V. , Denisov S. V. , Stekanov P. A. , Kornilov V. L. , Kaptsan F. V. , Urtsev V. N. , Shmakov A. V. , Khabibulin D. M. , Gornostyrev Yu. N. , Schastlivtsev V. M. , Sych O. V. , Platov S. I. 
Published: May 2021

Purposeful control of structural state of steel at every stage of technological chain of steel goods production is necessary for elaboration of effective metallurgical technologies. The purpose of the complex of research and theoretical studies was development of ideas on peculiarities of structure formation of various steel grades. Current conceptions about phase and structural transformations in steels with different contents of carbon and alloying elements considered. For carbon and alloyed steels, the results of the study of the structure of perlite formed at different temperatures summarized; morphology, crystallography and defects of crystalline structure of cementite, processes of its fragmentation, coagulation and spheroidization; crystallography of austenite degradation products; evolution of the structure during cold and hot plastic deformation; carbon redistribution processes prior to and during diffusion-controlled austenite decay presented. For low-carbon low-and sparingly alloyed cold-resistant weldable steels generalized results of investigation of structure-formation processes, alloying relationships, temperature-deformation rolling conditions, parameters of quenching and high-temperature tempering with structure, mechanical properties and performance characteristics of steel plates presented. The elaborated complex of scientific and technical solutions based on the studies enabled to master and digitize production technologies at PJSC “Magnitogorsk steel-works” of new generation steel rolled products intended for ship-building, oil and gas industries, automobile, hardware and construction industries. The new systems of alloying steels of various application, methods of the new generation steels production and automated control of technological processes protected by 27 patents of RF, are widely used in the production activity of PJSC “Magnitogorsk steel-works”.