bluuebunny/crossref_metadata_2025 huggingface dataset:
Exploring the Energy-dependent Radiation Properties in Dissipative Magnetospheres with Fermi Pulsars
Authors: Yang Xiongbang , Cao Gang
Published: March 2021

The equatorial current sheets outside the light cylinder (LC) are thought to be promising sites of high-energy emission based on the results of recent numerical simulations. We explore the pulsar light curves and energy spectra by computing the curvature radiation based on the FIDO magnetospheres. The FIDO magnetospheres with a near force-free regime inside the LC and a finite but high conductivity outside the LC are constructed using a spectral algorithm. The pulsar high-energy emission properties are explored by integrating the trajectories of the test particles under the influence of both the accelerating electric field and the curvature radiation losses. As an application, we compare the predicted energy-dependent light curves and energy spectra with those of the Crab and Vela pulsars published in the Fermi 2PC catalog. We find that the observed characteristics of the light curves and energy spectra from the Crab and Vela pulsars can be well reproduced by the FIDO model.
The Polar Precursor Method for Solar Cycle Prediction: Comparison of Predictors and Their Temporal Range
Authors: Kumar Pawan , Nagy Melinda , Lemerle Alexandre , Binay Karak Bidya , Petrovay Kristof
Published: March 2021

The polar precursor method is widely considered to be the most robust physically motivated method to predict the amplitude of an upcoming solar cycle. It uses indicators of the magnetic field concentrated near the poles around the sunspot minimum. Here, we present an extensive analysis of the performance of various such predictors, based on both observational data (Wilcox Solar Observatory (WSO) magnetograms, Mount Wilson Observatory polar faculae counts, and Pulkovo A(t) index) and outputs (polar cap magnetic flux and global dipole moment) of various existing flux transport dynamo models. We calculate Pearson correlation coefficients (r) of the predictors with the next cycle amplitude as a function of time measured from several solar cycle landmarks: setting r = 0.8 as a lower limit for acceptable predictions, we find that observations and models alike indicate that the earliest time when the polar predictor can be safely used is 4 yr after the polar field reversal. This is typically 2–3 yr before the solar minimum and about 7 yr before the predicted maximum, considerably extending the usual temporal scope of the polar precursor method. Reevaluating the predictors another 3 yr later, at the time of the solar minimum, further increases the correlation level to r ≳ 0.9. As an illustration of the result, we determine the predicted amplitude of Cycle 25 based on the value of the WSO polar field at the now official minimum date of 2019 December as 126 ± 3. A forecast based on the value in early 2017, 4 yr after the polar reversal would have only differed from this final prediction by 3.1 ± 14.7%.
Disk Tearing: Numerical Investigation of Warped Disk Instability
Authors: Raj A. , Nixon C. J. , Doğan S.
Published: March 2021

We present numerical simulations of misaligned disks around a spinning black hole covering a range of parameters. Previous simulations have shown that disks that are strongly warped by a forced precession—in this case, the Lense–Thirring effect from the spinning black hole—can break apart into discrete disks or rings that can behave quasi-independently for short timescales. With the simulations we present here, we confirm that thin and highly inclined disks are more susceptible to disk tearing than thicker disks or those with lower inclination, and we show that lower values of the disk viscosity parameter lead to instability at lower warp amplitudes. This is consistent with detailed stability analysis of the warped disk equations. We find that the growth rates of the instability seen in the numerical simulations are similar across a broad range of parameters, and are of the same order as the predicted growth rates. However, we did not find the expected trend of growth rates with viscosity parameter. This may indicate that the growth rates are affected by numerical resolution, or that the wavelength of the fastest-growing mode is a function of local disk parameters. Finally, we also find that disk tearing can occur for disks with a viscosity parameter that is higher than predicted by a local stability analysis of the warped disk equations. In this case, the instability manifests differently, producing large changes in the disk tilt locally in the disk, rather than the large changes in disk twist that typically occur in lower-viscosity disks.
Disk Tearing: Implications for Black Hole Accretion and AGN Variability
Authors: Raj A. , Nixon C. J.
Published: March 2021

Accretion disks around black holes power some of the most luminous objects in the universe. Disks that are misaligned to the black hole spin can become warped over time by Lense–Thirring precession. Recent work has shown that strongly warped disks can become unstable, causing the disk to break into discrete rings producing a more dynamic and variable accretion flow. In a companion paper, we present numerical simulations of this instability and the resulting dynamics. In this paper, we discuss the implications of this dynamics for accreting black hole systems, with particular focus on the variability of active galactic nuclei (AGN). We discuss the timescales on which variability might manifest, as well as the impact of the observer orientation with respect to the black hole spin axis. When the disk warp is unstable near the inner edge of the disk, we find quasi-periodic behavior of the inner disk, which may explain the recent quasi-periodic eruptions observed in, for example, the Seyfert 2 galaxy GSN 069 and in the galactic nucleus of RX J1301.9+2747. These eruptions are thought to be similar to the “heartbeat” modes observed in some X-ray binaries (e.g., GRS 1915+105 and IGR J17091-3624). When the instability manifests at larger radii in the disk, we find that the central accretion rate can vary on timescales that may be commensurate with, e.g., changing-look AGN. We therefore suggest that some of the variability properties of accreting black hole systems may be explained by the disk being significantly warped, leading to disk tearing.
Digit ratio in three species of tropidurid lizards
Authors: Miranda Kelton Gonçalves , Goulart Marcella Junqueira , Galdino Conrado Barbosa
Published: March 2021

Proportions between pairs of digits are linked to fitness in tetrapods and they can be influenced by sex hormones through individuals’ ontogenies. Therefore, in many species, the proportions amongst finger length ratios (referred as digit ratio, i.e. 2D second and 4D fourth digits) can differ between males and females. We investigated whether the three most commonly used forelimb digit ratios are sexually dimorphic in three tropidurid species. In one of the three lizard species, Eurolophosaurus nanuzae, males and females differ for only 2D:4D digit ratio. Otherwise, our results on the studied Tropidurus species conform to previous studies showing no differences in digit ratios between males and females. Hence, it might be the case of local selective forces shaping interpopulation variation in the expression of sexual dimorphism for digit ratio.
Le grand retournement de la globalisation occidentale néolibérale contre l’Occident
Authors: Rozès Stéphane
Published: March 2021

L’Occident jusqu’à présent percevait la globalisation comme positive car de conception néolibérale. Or, ce mouvement se retourne désormais au profit de l’Orient et singulièrement de la Chine. Le retrait du monde occidental est en partie dû à des causes endogènes et oblige celui-ci à repenser ses objectifs.
La nouvelle donne internationale et les opportunités de coopération stratégique UE/Chine
Authors: Loos François , Ruet Joël , de Grossouvre Henri , Hadj Fatima , Wang Alex , Beaujour Jean-Claude
Published: March 2021

L’environnement est devenu une préoccupation majeure pour tous les États. Décarboner nécessite des efforts importants qui demandent une coopération internationale accrue. Il y a là une opportunité entre la Chine et l’UE, permettant de dépasser des antagonismes et de construire un projet ambitieux et bénéfique pour la planète.
Éthiopie : la crise du fédéralisme ethnique
Authors: Le Gouriellec Sonia
Published: March 2021

L’Éthiopie reste un État complexe basé sur un fédéralisme ethnique mal défini, entraînant des fragilités politiques et désormais des tensions vivaces avec des affrontements entre pouvoir central et région du Tigray. Il est difficile d’évaluer les évolutions possibles entre conflits communautaires et compromis politiques.
Noise and stability in reaction-diffusion equations
Authors: Lv Guangying , Wei Jinlong , Zou Guang-an
Published: March 2021

We study the stability of reaction-diffusion equations in presence of noise. The relationship of stability of solutions between the stochastic ordinary different equations and the corresponding stochastic reaction-diffusion equation is firstly established. Then, by using the Lyapunov method, sufficient conditions for mean square and stochastic stability are given. The results show that the multiplicative noise can make the solution stable, but the additive noise will be not.
Cultural Indoctrination and Management Education Curriculum
Authors: Christiansen Bryan
Published: March 2021

As organizations are increasingly confronted with the need to engage with stakeholders from a variety of different cultural backgrounds, the need to understand the ways in which cultural imperatives play into individual and collective performances becomes increasingly important. These cultural traditions exert immense influence on business issues ranging from consumer behavior to management. This article examines the need for management education to establish an introductory course on cultural indoctrination (CI) for business students in an era of global hypercompetition. CI is defined as the process of inculcating ideas, attitudes, and cognitive strategies during the transfer of cultural traditions from one generation to the next with the expectation that such traditions will not be questioned in the future. This article introduces the CI concept and subsequently suggests how it should be incorporated into a university curriculum focusing on factors that promote convergence in international management contexts.
Achieving Bloom's Two-Sigma Goal Using Intelligent Tutoring Systems
Authors: Hall Jr. Owen P.
Published: March 2021

Management education is engaged in significant programmatic reforms in response to the business community's call for web-savvy, problem-solving graduates. Web-based intelligent tutors provide a readily accessible vehicle for enhancing business students' learning performance as well as preparing them for the rigors of the global marketplace. A primary goal of these AI-based systems is to approach Bloom's two-sigma learning performance standard via mastery learning techniques. Furthermore, intelligent tutors can also be used to identify students at risk, to formulate appropriate intervention plans, and to support team learning. Recent evidence suggests that achieving Bloom's goal may be achievable on a routine basis by 2025. The purpose of this chapter is to highlight the growing potential for using intelligent tutors to enhance student and team learning opportunities and outcomes and to outline strategies for implementing this revolutionary process throughout the management education community of practice.
The Social Business Guidance Unit
Authors: Ballesteros Carlos
Published: March 2021

The university work influences many areas of society: It generates jobs and influences employers; it is related to both internal and external publics; it takes part in economic processes and in local and regional decision-making process. This chapter presents a concrete case of a mission-driven approach in modern business education: the Social Business Guidance Service (SBGS), a service-learning structure created at a business school. The SBGS comprises a practical dimension (utilitas) because students have to apply their professional knowledge to concrete managerial problems; a social dimension (iustitia) as this service is concerned with organizations working with excluded people and other related problems. It also has a humanist approach (humanitas) as allow students meet people different from their lifestyles, people who often have real problems to foster their living (economic, stigma, social inclusion). Finally, there is a spiritual dimension (fides), as invite students to reflect on the sense of their acts.
Global Leadership Development
Authors: Bufalino Giambattista
Published: March 2021

No firm is immune from the impact of globalization. The new global context and the accompanying technological improvements are driving an increased need for global leaders with a wider variety of competencies, skills, and abilities. This chapter presents current perspectives on global leadership to better assist management educators in the design and implementation of global leadership programs. The fil rouge of this exploration will be the acknowledgement of the role of culture and its influence on business and management practices. First, the author will present current broad approaches to investigate global leadership; then he will focus on the development of global leadership, including practical challenges in business education. Finally, future directions will be discussed.
Sustainable Development and Consciousness Development
Authors: Green Nakita Bruno , Heaton Dennis
Published: March 2021

This chapter addresses how management education can propel the achievement of the United Nations Sustainable Development Goals by including tools for consciousness development within degree programs. Consciousness is the capacity to comprehend and care about the wholeness of life in ourselves, our society, and the natural world. Recent studies indicate that how individuals perceive challenges, formulate solutions, and collaborate with others is determined by their development of consciousness – that individuals functioning at higher levels of development are more likely to demonstrate sustainable leadership than those at lower states. To realize a sustainable world, universities must provide the necessary tools for students to transcend conventional thinking and experience higher states of consciousness. When the technologies of consciousness are included in management education, the world will realize a global shift towards a new sustainable paradigm.
The Impact of Entrepreneurship Education on Entrepreneurs' Skills
Authors: Almahry Fatima Fouad , Sarea Adel , Hamdan Allam Mohammed , Al Mubarak Muneer M. S.
Published: March 2021

This study aimed to measure the impact of entrepreneurship education on entrepreneurs' skills, which are technical, business management, and personal entrepreneurial skills. A survey method was chosen to measure the impact of entrepreneurship education on entrepreneurs' skills. Respondents were required to rank their perceptions on the impact of entrepreneurship education on entrepreneurs' skills based on a five-point Likert scale.
Good Entrepreneurial Intentions, No Entrepreneurial Action
Authors: Van der Westhuizen Thea
Published: March 2021

Against the background of the extremely high youth unemployment rate in South Africa, a survey was conducted among final-year undergraduate business students, asking them to rate the importance of five entrepreneurial processes: 1) obtaining entrepreneurship-related education, 2) searching, 3) planning, 4) marshalling, 5) implementing. Responses indicated that they recognized the importance of all five and also displayed personality traits positively related to individual entrepreneurial orientation and entrepreneurial intent. Continuing deterioration in youth employment nonetheless suggests that good entrepreneurial intentions do not translate into sustainable entrepreneurial action. Respondents failed to recognize the importance of their lecturers' role in their business education and seemed not to perceive that they needed intensive support from their lecturers to become entrepreneurial. They also failed to recognize the crucial importance of solid ground-work before starting a new business. These gaps in knowledge have an important bearing on the high unemployment rate.
The Mismatch between Undergraduate Marketing Education and Employers' Requirements in Portugal
Authors: Estima Ana , Duarte Paulo
Published: March 2021

The debate on what should be offered by universities concerning their marketing education curricula in order to serve the market needs, specifically the employers' has been widely present in the literature. Its relevance derives from the fact that employers are one of the most important stakeholders of higher education institutions, given their responsibility in the career of graduate students. In this chapter we intend to contribute to the understanding of the state of undergraduate marketing education offered by Portuguese universities and assess whether there is a mismatch between marketing education and market needs. A better understanding of the mismatch and its implications can lead to better marketing education programs, increasing not only the acceptance and employability of students but also the transfer of innovative marketing knowledge to companies. The findings show that there is indeed a gap between what is being offered by the academia and what is requested by the job market, in terms of marketing, that could be higher than 50% of the requirements expected by employers.
The Role of Zakat in Achieving Economic Empowerment, Environmental Sustainability, and Social Re-Engineering as Promoted in the 12th Malaysia Plan
Authors: Mahadi Nur Farhah , Mohd. Zain Nor Razinah , Othman Anwar Hasan Abdullah
Published: March 2021

This study seeks to gain a deeper understanding on the role of zakᾱt in achieving economic empowerment, environmental sustainability, and social re-engineering as promoted in the 12th Malaysia Plan (12 MP) which aligned with Shared Prosperity Vision 2030 (SPV2030) as well as United Nation's Sustainable Development Goals (SDGs) to provide support to fulfil the Maqᾱṣid al-Sharῑ῾ah. This study uses the library study method. Among the reading materials that have been referred include those materials related to the role of zakᾱt, the government five-year development plan, namely 12th Malaysia Plan from 2021 - 2025, the Shared Prosperity Vision 2030 (SPV2030), SDGs, and Maqᾱṣid al-Sharῑ῾ah. Qualitative approach is used in this study to collect information, documents, and data accordingly with regard to the topic discussed. By understanding the importance of zakᾱt in achieving economic empowerment, environmental sustainability, and social re-engineering, we can further enhance the distribution and utilisation of these zakᾱt funds to ensure its positive impact in socio-economic. Eventually, this may also motivate the State Islamic Religious Council (SIRC) to promote the importance of fair and equitable distribution of zakᾱt to aṣnᾱf. The study will provide significant socio-economic impacts as the results will enable new initiatives by industries to develop better management of zakᾱt funds to finally achieve the economic empowerment, environmental sustainability, and social reengineering in the society as promoted in the 12th Malaysia Plan (12 MP) which aligned with Shared Prosperity Vision 2030 (SPV2030) as well as United Nation's Sustainable Development Goals (SDGs) to provide support to fulfil the Maqᾱṣid al-Sharῑ῾ah.
The Role of Zakat to Alleviate Poverty of Refugees in Malaysia
Authors: Mohd Razin Nur Amirah , Rosman Romzie
Published: March 2021

Zakat plays an important role as part of the Islamic socio-economic system. Zakat is said to be one of the financial tools to alleviate poverty apart from micro financing and micro credit. However, it is found that most of the benefits are only offered to the citizens of Malaysia and not the other untapped communities from other countries especially the refugees that seeks our government's protection. Hence, if the existing zakat recipients who are the citizens still unable to avoid from the unruly poverty, let alone the untapped group, especially the refugees. With the majority of refugees hailing from Muslim countries, Muslims around the world fulfilling zakat, a major pillar of their faith, can play an important role in alleviating their suffering and restoring their dignity as human beings. The realization of the incredible philanthropic Islamic social finance such as zakat, which can potentially exceed $300 billion a year, has driven United Nations High Commissioner for Refugees (UNHCR) to launch a Zakat Program in late 2016, namely Refugee Zakat Fund. Currently, the approach by zakat institution to help refugees are less proactive, given that most of the approach are made by the non-government organization (NGO) such as UNHCR Malaysia and local non-government organizations. The issues are very important to be solved as Islamic social finance has a huge potential mechanism to reduce poverty. Hence, the objectives of this study are (1) to explain the role of zakat in eradicating poverty among refugees for improving their socio-economic well-being, (2) to explore the issues and challenges of zakat administration in Malaysia especially in helping refugees, and (3) to explore the issues and challenges of UNHCR in managing refugees' zakat funds. This study adopted qualitative approach by conducting interview with five experts in relation to Islamic social finance especially on the issues of zakat management. These experts have vast experience in Islamic finance and in Shariah. In general, the findings suggest that (1) zakat can play a crucial role in providing assistance to those in need without exception to fulfil both Maqasid Shariah and Sustainable Development Goals (SDGs); (2) one of the challenges facing the zakat institution is their managements are inefficient and a lack of transparency in terms of how the funds are collected, managed, and distributed, and hence, the adoption of technology is important for effective and efficient zakat system; (3) UNHCR must take important care on governance aspects in order to manage and administer zakat funds for refugees to improve the trust of zakat payers and recipients. This study may contribute to the enhancement policies in relation to both zakat and refugees made by both federal and state government by harmonizing the policies to solve the issues on poverty of the refugees, especially in Malaysia.
A Study on the Influence of Islamic Financial Literacy in Managing Cash and Debt Among Millennial in Indonesia
Authors: Ginting Ledy Mahara , Redzuan Nur Harena
Published: March 2021

Indonesia is currently experiencing a demographic dividend, where the total population of productive age is higher than the total of un-productive age. The most numerous groups in this productive age group are the millennials aged 20 to 40 years, which required them to have sufficient knowledge of Islamic financial literacy. Therefore, this study aims to measure the level of Islamic financial literacy of millennials in Aceh, Indonesia and to investigate its effects on managing cash and debt. The influence of demographic factors is also examined in this study namely gender, age, educational background, and income level. By using multiple linear regression analysis, the result shows that the level of Islamic financial literacy, educational background, and income level significantly affects cash and debt management. The results of this study can be references for the Islamic financial industry in Aceh and for its government. The millennial seems to be ready for the new provisions that will be implemented in relation to the Islamic financial industry in Aceh.
A Multi-Stakeholder Perspective of Analytics for Learning Design in Location-Based Learning
Authors: Pishtari Gerti , Rodríguez-Triana María Jesús , Väljataga Terje
Published: March 2021

Promoted by the growing access to mobile devices and the emphasis on situated learning, location-based tools are being used increasingly in education. Multiple stakeholders could benefit from understanding the learning and teaching processes triggered by these tools, supported by data analytics. For instance, practitioners could use analytics to monitor and regulate the implementation of their learning designs (LD), as well as to assess their impact and effectiveness. Also, the community around specific tools—such as researchers, managers of educational institutions, and developers—could use analytics to further improve the tools and better understand their adoption. This paper reports the co-design process of a location-based authoring tool that incorporates multi-stakeholder analytics for LD features. It contributes to the research community through a case study that investigates how analytics can support specific LD needs of different stakeholders of location-based tools. Results emphasise opportunities and implications of aligning analytics and LD in location-based learning.
Exploring quality of life among head-and-neck cancer patients in Western India using European organization for research and treatment of cancer questionnaires
Authors: Parkar Sujal , Sharma Abhishek , Shah Mihir
Published: March 2021

Background:

Head-and-neck cancers (HNCs) are one of the major public health problems for both patients and the health-care providers in India. The clinical manifestations of HNC and its treatment can lead to negative effects on the quality of life (QoL) of the patient. The study is aimed to explore the QoL using the European Organization for Research and Treatment of Cancer (EORTC) QoL questionnaires among HNC patients in Western part of India.

Materials and Methods:

A cross-sectional prospective study was conducted among 400 HNC patients attending the tertiary cancer center. The QoL was assessed by using the EORTC core questionnaire (EORTC QLQ-C30) and EORTC head- and neck-specific questionnaire (EORTC QLQ-H and N35). The data were explored using means, standard deviation, medians, ranges, and proportions.

Results:

All the 400 patients had completed the questionnaire having a compliance rate of 100%. There was no missing data at the item level for the EORTC QLQ-C30 questionnaire. While the missing items for EORTC QLQ-H and N35 were: problems while swallowing food, problems with teeth, and sexuality. The mean functional score ranged from 74.22 to 93.49 for EORTC QLQ-C30. The mean symptoms score was found in the range from 3.25 to 81.50 for EORTC QLQ-H and N35.

Conclusion:

Both questionnaires were comprehensive and well accepted by the patients. These questionnaires provided the information-related disease-specific QoL data, which otherwise is often missed. Health-care providers should not only focus on the clinical effects of treatment but also on QoL issues because it will improve overall patient care and survival.
Histopathologic changes in aborted placenta
Authors: Ashour A , Gheryani Nabeia , Meidan Tunis
Published: March 2021

Introduction: Histopathological examination of the placenta with clinical implications helps to make the diagnosis and deduce the cause of abortion, fetal mortality, morbidity, and pregnancy complications. Aim: This study aims to determine the frequencies and types of abnormalities of the chorionic villi in the aborted placentae. Materials and Methods: All specimens of products of conception submitted to a private histopathology laboratory in Benghazi during the period (from January 01, 2016 to December 31, 2018) were formalin-fixed, paraffin-embedded, and histopathology reviewed using hematoxylin and eosin stain under light microscopy. The data collected and statistically analyzed using SPSS version 22. Results: The study involved 92 specimens, of which 86 were abnormal and the pathological changes include partial mole (48%), hydropic changes (19%), increased vascularity (chorioangiosis) (13%), fibrosis (10%), numerous Hofbauer macrophages (8%), and abnormal premature calcification (2%). The rest of the specimens (6.5%) were normal placentae. Most of the cases of partial mole (73%) were at the age group of ≥30 years, and cases of abnormal premature calcification were at the age of >40 years. Conclusion: The histopathologic examination is an important tool for diagnosing the placental abnormalities. Most cases of abortion have abnormalities in chorionic villi; the most common abnormality is the partial mole, followed by hydropic change, then increased vascularity (chorioangiosis), fibrosis, and numerous Hofbauer macrophages. Abnormal premature calcification is the least finding. Partial mole occurs at an older age group of ≥30 years.
تقييم التركيزات والتراكم البيولوجي للفلزات الثقيلة للمياه السطحية والأعشاب البحرية من ساحل البحر المتوسط المصري بالإسكندرية ومخاطرها على صحة الإنسان
Authors: داليا سالم داليا سالم
Published: March 2021

هدفت هذه الدراسة إلى تقييم التركيزات والتراكم البيولوجي للفلزات الثقيلة (الكادميوم والكروم والنحاس والمنغنيز والنيكل والرصاص والزنك والحديد والكوبالت) للمياه السطحية والأعشاب البحرية من ساحل البحر المتوسط المصري بالإسكندرية ومخاطرها على الإنسان. الصحة. أشارت حسابات عامل التراكم الحيوي إلى امتصاص عالي للكادميوم والمنغنيز والكروم بواسطة الأعشاب البحرية. تم إجراء تقييم المخاطر الصحية الإنسانية للفلزات الثقيلة المدروسة لمياه البحر والأعشاب البحرية باستخدام مؤشر المخاطر (HI) وتحليلات حاصل المخاطر (HQ). كانت النتائج أقل من 1، وبالتالي كانت هذه الأنواع من الأعشاب البحرية ذات جودة عالية ويمكن استخدامها في مجال التغذية.
خصائص مستوي سطح البحر النسبي في خليج أبي قير، الإسكندرية، مصر
Authors: محمد أحمد سعيد محمد أحمد سعيد
Published: March 2021

تمت دراسة التغيرات في مستوى المياه في خليج أبو قير على مدى 21 عاما. وكانت التغيرات فيها موسمية بمتوسط عام 0.47م، وبمعدل ارتفاع 6مللم/سنة. المد والجزر في خليج أبي قير من النوع النصف يومي وذو سعات منخفضة. لم تظهر النتائج وجود عام محدد لأي مستوى سطح بحر استثنائي. تم عمل التحليل الإحصائي لارتفاعات العواصف ,كذلك تم تقدير مخاطر الفيضانات بمنطقة الخليج. تم حساب معامل خطر تصميم المنشآت وقيم التكرار لمستويات المياه الهامة. وأوضحت علاقة تجريبية لمستويات مختلفة من تواتر حدوث ارتفاع في مستوى المياه أن مستوى الماء قد يبلغ أو يتجاوز 3 أمتار مرة واحدة في 100 سنة.
طبيعة الملوحة في جنوب شرق البحر المتوسط
Authors: طارق محمد الجزيري طارق محمد الجزيري
Published: March 2021

. يرسم هذا العمل السلوك العام للملوحة في ثلاث طبقات مختلفة في منطقة جنوب شرق البحر المتوسط، وهي: الطبقات تحت السطحية، والوسطى، والعميقة. باستخدام طرق الانحدار الخطي والتربيعي، فقد تم فحص اتجاهات المتوسط السنوي لحيود الملوحة(MASA) . خطيا، كشفت الاتجاهات عن زيادات عامة في MASA بمعدلات سنوية وعقدية مختلفة للطبقات الثلاثة. تربيعيا، أظهرت النتائج أن الطبقة المائية تحت السطحية لها خصائصها الخاصة. تحاكي منحنيات MASA التربيعية للحدود الوسطى والعلوية لطبقات المياه العميقة المنحنيات التربيعية لطبقة المياه السطحية في المنطقة محل الدراسة. في الأعماق أكبر من 1000 متر، يعكس اتجاه الانحدار التربيعي لـ MASA ملوحة مستمرة.
استخدام دليل التكامل الحياتي (F-IBI) في تقييم بيئة أسماك هور شرق الحَمّار، البصرة-العراق
Authors: علي طه ياسين، وفلاح معروف مطلك علي طه ياسين، وفلاح معروف مطلك
Published: March 2021

. تهدف الدراسة إلى معرفة حالة بيئة ونوعية مياه هور شرق الحَمّار باعتماد الأسماك كمؤشر بيئي وباستخدامك دليل التكامل الحيوي (F-IBI). جمعت عينات الأسماك من ثلاثة مواقع باستخدام خمسة وسائل صيد، لم تظهر فروق معنوية بين المواقع الثلاث المختارة، تم صيد 47 نوعًا سمكيًا ضم 35 جنسًا و20 عائلة. شكلت الأنواع المستوطنة 16 نوعًا مع تواجد لثمان أنواع دخيلة و23 نوعًا بحريًا. تأثرت قيم الدليل طرديًا بعاملي درجة حرارة وإيرادات المياه على التوالي، وقسم الدليل إلى ثلاث مجاميع تميزت الأولى بتصدر الأنواع المستوطنة والمهاجرة بنسبة 82,98? من الوفرة النوعية، وتصدرت بالمجموعة الثانية أسماكPlaniliza abu (Mugilidae) المتحملة المستوطنة بوفرة نسبية 14.84? تلتها أسماكCarassius gibelio (Cyprinidae) الدخيلة 13,04? من الوفرة الكلية التي شكلت الأنواع المتحملة 91? منها، مع تواجد نوعي غير عددي للأنواع الحساسة واحتلت ثالثًا بالوفرة النسبية الأنواع الدخيلة، وللمجموعة الثالثة خلل واضح في مسارات طاقة الغذاء حيث أدنى النسب للأنواع نباتية التغذية وأعلاها للأنواع مختلطة التغذية تتوسطها الأنواع لحمية التغذية. بلغت القيمة الإجمالية لدليل التكامل الحيوي 44,92? وهي ضمن البيئات المعتدلة، تأثرت بيئة الهور بشكل طردي بالأنواع المستوطنة والمهاجرة وبشكل عكسي بالأنواع الدخيلة، أظهر تحليل (PCA) فاعلية الدليل وقاس مساهمة وحداته.
النشاط التآزري المضاد للتكاثر لمزيج دوكسوروبيسين مع التربينويدات المعزولة من Sarcophyton glaucum
Authors: نجلاء علي البرعي نجلاء علي البرعي
Published: March 2021

الدوكسوروبيسين، ناتج أيضي من Streptomyces، ويستخدم كدواء مضاد للسرطان والمعروف بفعاليته للعديد من الأورام الصلبة. تم تقييم السمية الخلوية للدوكسوروبيسين وخمسة تربينويد، والتي تم عزلها من Sarcophyton glaucum. وتم تنفيذ ذلك عن طريق استخدام فحوصات SRB. كما تم استخدام مقياس التدفق الخلوي للكشف عن موت الخلايا المبرمج للمركبات المعزولة (1-5). ويمكن أن يعزى النشاط المضاد للتكاثر للنواتج الأيضية المستخدمة إلى قدرتها على تعزيز موت الخلايا المبرمج. كما تم استخدام مؤشر الجمع (CI) لتقييم تأثير التآزر. أعطت الحضانة مع الكواشف معًا عند 1/4 و1/2 من جرعة IC50 من الأيزوبرينويدات وتركيزات مختلفة من دوكسوروبيسين انخفاضًا كبيرًا في قيم IC50 في خلايا سرطان الثدي في مؤسسة ميتشيغان للسرطان (MCF-7).
السمات الجيومورفولوجية لمنطقة رابغ الساحلية في شرق البحر الأحمر، المملكة العربية السعودية، باستخدام الدراسات الميدانية وصور القمر الصناعي "سنتينل 2"
Authors: عمر علي الحربي عمر علي الحربي
Published: March 2021

. تقوم الدراسة بوصف الأشكال الأرضية الساحلية على طول المنطقة الساحلية لرابغ على الجانب الشرقي من السهل الساحلي السعودي للبحر الأحمر، وكذلك العمليات المسؤولة عن الجيومورفولوجية الموجودة على الساحل. وتتنوع التضاريس التي تحدث في المناطق الساحلية، وتشمل الشواطئ الرملية، ومناطق المد والجزر، والكثبان الرملية، والسبخات (المسطحات الملحية) والمستنقعات، ومصاطب الشعاب المرجانية المرتفعة، وصخور الشاطئ، والبحيرات، والشعاب المرجانية، والمواد الأرضية، والرواسب الغرينية. وتشير هذه التضاريس إلى أن الظروف على هذه الشواطئ قد شهدت تغيرًا سريعًا. وتتميز الأغطية الطبيعية المختلفة بإخضاع بيانات القمر الصناعي "سنتينل 2" لتقنيات معالجة الصور الرقمية. كما تم التحقق من صحة النتائج التي تم الحصول عليها من خلال العمل الميداني. كان التصنيف الموجه فعالًا بشكل خاص في التمييز بين الشعاب المرجانية، ذات اللون الأحمر، ومن الحجر الجيري للشعاب وهو بني اللون. علاوة على ذلك، أشار التصنيف الموجه إلى أنظمة تصريف الأودية والمصبات في عدد من المناطق، وتحديدًا في الجزء الجنوبي من خور الخرار، حيث يتم تصريف أودية رابغ. وتكشف الصور التي تمت معالجتها بوضوح كيف يتم توزيع الأشكال الأرضية المختلفة. وتعتبر النتائج التي تم التوصل إليها ذات قيمة أساسية، ليس فقط للأبحاث الجيولوجية والهندسية والهيدرولوجية المستقبلية، ولكن أيضًا لصناع القرارات.
العجز في الطاقة الكامنة: معامل لإظهار التقسيم الطبقي في شرم أبحر
Authors: تركي متعب الردادي تركي متعب الردادي
Published: March 2021

تنفيذ 22 رحلة ميدانية خلال عام 2016م عند مدخل شرم أبحر، وذلك لإجراء مسح هيدروغرافي يغطي جميع الفصول. وكذلك أيضًا، لاستكشاف العجز في الطاقة الكامنة، والذي يمكن استخدامه لقياس التقسيم الطبقي لكثافة عمود الماء. أظهرت النتائج أن التركيب الرأسي للخصائص الهيدروغرافية (درجة الحرارة، والملوحة، والكثافة) في عمود الماء يكون مختلطاً بشكل كبير خلال جميع الفصول باستثناء فصل الصيف (فصل الشتاء، والربيع، والخريف)، حيث يكون التقسيم الطبقي واضحاً فيه. وتبين النتائج أن القيم القصوى للعجز في الطاقة الكامنة ? P تظهر خلال شهر يوليو، حيث بلغت 402.70 ±157.22 جول/متر2، ويعزى ذلك إلى التقسيم الطبقي القوي في عمود الماء. بينما وجد أن أدنى قيمتين لـ ?P هما 23.09 ±0 جول/متر2و 28.02 ±0 جول/متر2 خلال شهري أكتوبر وفبراير على التوالي. وتعزى هاتان القيمتان الدنيا إلى الاختلاط القوي خلال هذين الشهرين لعمود الماء بأكمله مع اختلافات طفيفة في طبقات الكثافة بحوالي 0.09 كجم/متر.
RATIONAL APPEAL VS EMOTIONAL APPEAL IN FORMING CONSUMER’S INTEREST THROUGH ADVERTISEMENT
Authors: Widya Pramatatya Resindra
Published: March 2021

The aim of this study is to examine the impact of emotional appeal advertisement in television and rational appeal advertisement in magazine to customer’s purchase intention. Data were collected using purposive sampling for 100 people and analyzed using multiple regressions. The finding of research is that emotional-appeal advertising in television has less impact on customer’s purchase intention because of switching behavior during commercial break. While the rational appeal advertisement has significant impact on customer’s purchase intention because they have enough time to think and analyze the information in the advertisement.
SECOND LANGUAGE ACQUISITION ON KNOWLEDGE TRANSFER IN SOCIAL LEARNING DAYAKNESE BAKATI' RARA IN 3T REGION
Authors: Vasantan Priska
Published: March 2021

In the globalization era, there are various forms of modern life, in Indonesia, especially in Bengkayang. It is still found an isolated and disadvantaged village named Tampe village which is located far from residential city Bengkayang. The research was conducted in Indonesian language, English, technology, and so forth, so the research funded by the Direktorat Riset dan Pengabdian Masyarakat Diirektorat Jenderal Penguatan Riset dan Pengembangan Kementerian Riset, Teknologi, dan Pendidikan Tinggi Anggaran 2018 Research Contract no. 115 / SP2H / LT / DRPM / 2018 using grounded theory method, a method that greatly influences sociological perspectives on human activities in terms of talking and communicating. The data collecting was conducted by observing three children of Dayaknese Bakati’ Rara 11-14 years old. They are 5th grader at SDN 15 Tampe Atas. The results of this study have been used as a language for childhood. However, it is known that these three children are unfavorable influences on knowledge transfer in social learning.
ANALYZING THE INFLUENCE OF INTEREST RATES ON MONEY DEMAND ACCORDING TO KEYNESIAN THEORY
Authors: Kristianto Aloysius Hari
Published: March 2021

The purpose of this research is to analyze the factors that influence money demand which are characterized by the amount of money currency (M1) in Indonesia, one of which is interest rates. The model of observation analysis used in this study is OLS (Ordinary Least Square), as a whole the tests performed are by linear constraint tests, statistical tests and classic assumption tests. In this model, the variable domestic interest rates in Indonesia are used as explanatory components. From these variables examined whether it influences the demand for money (the velocity of money) M1 or not.The results obtained from this study are that domestic interest rates have a negative and significant influence on the demand for money in Indonesia, these results are consistent with Keynesian theory, that interest rates increase, the demand for money for the cash balance will decrease.
APPLICATION OF FLIPPED LEARNING MODEL AS IMPLEMENTATION OF BASIC MANAGEMENT FUNCTIONS
Authors: Januari Ayu Fridayani  , Fransisca Desiana Pranatasari
Published: March 2021

This study explains how the basic functions of management—planning, organizing, leading and controlling (POLC)—are packaged in a flipped learning model. The basic functions of management, in general, are introduced at the beginning of lectures and become the basis for further learning in Management Department. As basic course material, the learning process of basic functions management must be arranged systematically and interestingly to motivate students to involve in the next learning materials enthusiastically. Through a case study on the subject of Organizational Management in the Management Department, Faculty of Economics, Sanata Dharma University, this study provides an overview of the learning process of flipped learning to introduce the basic functions of management to students. By utilizing description qualitative approach, this study shows that the flipped learning model can be one of the prospective alternative learning model in implementing basic management functions, both for lecturers and students.

Keywords: basic functions of management, learning models, flipped learning

 

      Abstrak

Studi ini menjelaskan bagaimana fungsi dasar manajemen—planning, organizing, leading dan controlling (POLC)—dikemas dalam suatu model flipped learning. Fungsi dasar manajemen, pada umumnya, dikenalkan pada masa awal perkuliahan dan menjadi basis untuk pembelajaran selanjutnya pada program studi manajemen.  Sebagai materi kuliah dasar, proses pembelajaran terkait fungsi dasar manajemen harus disusun secara sistematis dan menarik untuk memotivasi mahasiswa mengikuti materi-materi pembelajaran selanjutnya dengan antusias. Melalui studi kasus pada mata kuliah Manajemen Organisasi di Program Studi Manajemen, Fakultas Ekonomi Universitas Sanata Dharma, studi ini memberikan gambaran proses pembelajaran flipped learning untuk mengenalkan fungsi dasar manajemen kepada mahasiswa. Dengan memanfaatkan pendekatan deskripsi kualitatitif, penelitian ini menunjukkan bahwa model flipped learning dapat menjadi salah satu alternatif bentuk pembelajaran yang prospektif dalam mengimplementasikan fungsi dasar manajemen, baik bagi dosen maupun mahasiswa.

Kata kunci: fungsi dasar manajemen, model pembelajaran, flipped learning
Pengaruh Variabel – Variabel Gender-Role Orientation Terhadap Intensi Berwirausaha
Authors: Inneke Setiawan Felicia , Budi Sienatra Krismi , Wendy Ary William
Published: March 2021

Penelitian ini dilakukan untuk melihat pengaruh Gender-Role Orientation yaitu maskulin, feminin dan androgynous terhadap intensi berwirausaha di Universitas Ciputra. Guna mengumpulkan data penelitian, kuesioner disebarkan ke 147 responden di Universitas Ciputra dengan tingkat pengembalian kuesioner 100%. Pengambilan sampel dilakukan dengan metode incidental sampling. Penelitian ini menggunakan analisis regresi linier berganda untuk melihat pengaruh variabel maskulin, feminin, dan androgynous sebagai variabel independen terhadap intensi berwirausaha sebagai variabel dependen. Hasil penelitian ini menunjukkan bahwa variabel maskulin dan feminin tidak berpengaruh terhadap intensi berwirausaha, sedangkan variabel androgynous berpengaruh signifikan terhadap intensi berwirausaha.
Studi Kelayakan Bisnis Hidroponik Tinjauan Aspek Finansial (Sekolah Tinggi ilmu Manajemen Shanti Bhuana, Bengkayang, Kalimantan Barat)
Authors: Akiang Minju , Ayustia Rissa , Kristianto Aloysius Hari
Published: March 2021

Hidroponik merupakan salah satu konsep pertanian modern yang berpotensi untuk dikembangkan, khususnya oleh masyarakat Bengkayang yang belum terlalu mengenal sistem pertanian ini. Tujuan penelitian ini dilakukan adalah untuk mengetahui seberapa besar kelayakan usaha hidroponik dikelola dan dijalankan dalam jangka waktu panjang yang dilihat dari aspek keuangan. Analisis penelitian ini menggunakan metode kuantitatif dengan alat bantu software Microsoft excel yang dibuat dalam bentuk tabel, dengan tujuan agar memudahkan dalam mengklasifikasi data kuantitatifnya. Kriteria dalam kelayakan investasi usaha hidroponik ini menggunakan beberapa aspek keuangan seperti Net Present Value (NPV), Net Benefit/Cost (Net B/C), Internal Rate Return (IRR), dan Payback Period. Penelitian ini mendapatkan hasil dengan menggunakan analisis finansial sesuai dengan aspek keuangan sebagai berikut NPV sebesar 9.706.160, Net B/C sebesar 1,3, IRR sebesar 25%. Dan hasil Payback Period menunjukkan bahwa jangka waktu pengembalian investasi/modal yaitu 1 tahun 8 bulan 14 hari.
TRÍ TUỆ NHÂN TẠO VÀ NGHỀ KẾ TOÁN TRONG CUỘC CÁCH MẠNG CÔNG NGHIỆP 4.0
Authors: VÂN ANH HỒ THỊ , ANH PHẠM TÚ
Published: March 2021

Những phát triển gần đây về robot và trí tuệ nhân tạo (AI – Artificial intelligence) cũng như các ứng dụng của chúng đã bắt đầu làm thay đổi nhiều khía cạnh trong cuộc sống của chúng ta nói chung, nghề kế toán nói riêng. Tuy nhiên, việc áp dụng rộng rãi AI trong kinh doanh và kế toán vẫn còn ở giai đoạn đầu. Do những người ủng hộ cuộc cách mạng AI coi sự phát triển này là một bước tiến và sẵn sàng đón nhận những thách thức mới trong tương lai, nhưng những người phản đối lại coi đó là một bước lùi vì nhiều kế toán viên sẽ không thích nghi được với môi trường kinh doanh mới này và sẽ tụt lại phía sau. Vì vậy, để xây dựng tầm nhìn tích cực về tương lai, chúng ta cần phải có sự hiểu biết sâu sắc về cách AI có thể giải quyết các vấn đề kế toán và kinh doanh, những thách thức thực tế và các kỹ năng kế toán mới cần thiết để làm việc cùng với các hệ thống thông minh này. Bài nghiên cứu nhằm mục đích thảo luận một số tác động, và một số xu hướng có thể phát triển trong tương lai đối với nghề kế toán trong bối cảnh AI hiện nay.
CÁC YẾU TỐ ẢNH HƯỞNG ĐẾN Ý ĐỊNH MUA SẢN PHẨM CÓ THÀNH PHẦN CHÍNH LÀ TẢO XOẮN SPIRULINA CỦA NGƯỜI TIÊU DÙNG THÀNH PHỐ HỒ CHÍ MINH
Authors: XUÂN GIANG PHẠM , TRÍ VÕ MINH
Published: March 2021

Sản phẩm có thành phần chính - tảo xoắn Spirulina - là một dạng thực phẩm tốt cho sức khỏe nhưng được sản xuất và kinh doanh ở nước ta chưa lâu. Vì vậy, để sản phẩm trở nên quen thuộc, sau đó tìm cách gia tăng ý định và cuối cùng thực hiện hành vi mua của người tiêu dùng thành phố Hồ Chí Minh là một việc cần thiết. Trên cơ sở khảo sát 350 khách hàng tiềm năng với 320 phiếu khảo sát hợp lệ và dữ liệu được xử lý bằng phần mềm SPSS 20, nghiên cứu đã cho thấy, bốn thang đo độc lập là: thái độ đối với sản phẩm, chuẩn chủ quan, sự kiểm soát hành vi được cảm nhận và rủi ro cảm nhận được chọn đưa vào mô hình có ảnh hưởng tới 69,6% ý định mua. Theo đó, 4 hàm ý quản trị được rút ra từ kết quả nghiên cứu. Hy vọng rằng, những hàm ý này, nếu được các doanh nghiệp thực hiện, sẽ làm gia tăng ý định mua sản phẩm của người tiêu dùng tại thành phố
CÁC YẾU TỐ ẢNH HƯỞNG ĐẾN QUYẾT ĐỊNH MUA CỦA KHÁCH HÀNG ĐỐI VỚI CĂN HỘ CỦA CÔNG TY CỔ PHẦN TẬP ĐOÀN ĐẤT XANH TẠI THÀNH PHỒ HỒ CHÍ MINH
Authors: THÀNH LONG NGUYỄN , TOÀN THẮNG NGUYỄN
Published: March 2021

Nghiên cứu này nhằm xác định các yếu tố ảnh hưởng đến quyết định mua của khách hàng đối với căn hộ của công ty cổ phần tập Đoàn Đất Xanh tại Thành phố Hồ Chí Minh trên cơ sở kết hợp giữa phương pháp nghiên cứu định tính và định lượng. Nghiên cứu định tính được thực hiện thông qua thảo luận nhóm tập trung cùng các chuyên gia. Nghiên cứu định lượng được thực hiện thông qua phỏng vấn trực tiếp đối tượng là khách hàng mua căn hộ của công ty Cổ phần Tập đoàn Đất Xanh. Kết quả nghiên cứu cho thấy quyết định mua căn hộ của khách hàng chịu tác động bởi 6 yếu tố, bao gồm: (1) Nhóm tham khảo; (2) Vị trí - tiện ích của căn hộ; (3) Thủ tục pháp lý; (4) Chính sách hỗ trợ khách hàng; (5) Thương hiệu; (6) Giá trị cảm nhận. Từ kết quả này, nghiên cứu đưa ra một số hàm ý quản trị nhằm nâng cao quyết định mua căn hộ mua căn hộ của công ty Cổ phần Tập đoàn Đất Xanh tại Thành Phố Hồ Chí Minh.
HỆ THỐNG HỖ TRỢ ĐÁNH GIÁ VÀ KHUYẾN NGHỊ DỊCH VỤ DU LỊCH DỰA TRÊN KHAI THÁC Ý KIẾN KHÁCH HÀNG TRỰC TUYẾN
Authors: PHỤNG THÁI KIM , AN TẾ NGUYỄN , THU HÀ TRẦN THỊ
Published: March 2021

Nghiên cứu này được tiến hành nhằm đề xuất mô hình kiến trúc hệ thống cùng với các giải pháp hỗ trợ đánh giá và khuyến nghị dịch vụ du lịch dựa trên phương pháp khai thác ý kiến. Nghiên cứu này tiếp cận theo phương pháp khai phá dữ liệu theo chuẩn công nghiệp (CRISP-DM). Dữ liệu thực nghiệm nghiên cứu là những bình luận của du khách về các khách sạn tại các tỉnh và thành phố lớn tại Việt Nam, được thu thập tự động trên trang web Agoda. Trên cơ sở các kết quả thực nghiệm, nghiên cứu đưa ra một số khuyến nghị để có thể triển khai hệ thống này trong thực tiễn ngành du lịch. Nghiên cứu này có giá trị tham chiếu cho các nhà nghiên cứu không chỉ trong lĩnh vực du lịch mà còn trong các lĩnh vực kinh doanh và quản lý.
GIẢI PHÁP TĂNG CƯỜNG HOẠT ĐỘNG KẾT NỐI DOANH NGHIỆP CỦA KHOA THƯƠNG MẠI – DU LỊCH, TRƯỜNG ĐẠI HỌC CÔNG NGHIỆP TP.HCM
Authors: THANH HÙNG MAI , THU HƯƠNG ĐẶNG , VĂN DŨNG HỒ , THÙY PHƯƠNG PHẠM THỊ
Published: March 2021

Việc đào tạo đáp ứng được đúng và đủ về chất lượng và số lượng theo yêu cầu của doanh nghiệp luôn được các trường đại học quan tâm hàng đầu. Mối quan hệ hợp tác giữa trường đại học và doanh nghiệp đã được khẳng định là hết sức quan trọng đối với sự phát triển của cả nhà trường và doanh nghiệp. Bài báo này sẽ tóm lược cơ sở lý luận, nghiên cứu thực trạng kết nối giữa nhà trường và doanh nghiệp hiện nay. Dựa trên phương pháp nghiên cứu định tính và định lượng, với sự hỗ trợ của công cụ xử lý dữ liệu phần mềm SPSS, thống kê mô tả, kiểm định t-test, anova, phân tích nhân tố và xây dựng mô hình hồi quy. Từ đó đề xuất các giải pháp phù hợp nhằm tăng cường hoạt động kết nối doanh nghiệp của khoa Thương mại – Du lịch, Trường Đại học Công nghiệp Tp.HCM.