Theory Study Research Articles

The case of itinerant magnetism in CaMn2Al10: self-consistent renormalisation (SCR) theory study

We have applied the powerful self-consistent renormalization theory of spin fluctuations for the system CaMn2Al10 discovered in 2015 and was conjectured to be an itinerant magnet. We have calculated the inverse static i.e. (paramagnetic) susceptibility and have compared it with the experimental data (Steinke et al 2015 Phys. Rev. B 92 020413). The agreement is very good. We have calculated spin fluctuations at various temperatures and have also estimated the strength of the electronic correlation i.e. (U = 0.3136 eV) in the Hubbard Hamiltonian. Based on our quantitative explanation of the inverse static i.e. (paramagnetic) susceptibility data within the framework of self-consistent renormalization theory, we can decisively conclude CaMn2Al10 exhibits the phenomena of itinerant magnetism. Further, our density functional theory (DFT) and DFT + U calculations corroborate the strong Mn-Al hybridization which is the key to the itinerant magnetism in this system. Our estimated correlations strength will provide a foundation for further studies of itinerant magnetism in this system.

DEVELOPMENT OF THE MIDDLE EAST SCIENCE AND EDUCATION SYSTEM

The Islamic education systems in the Middle East have passed numerous phases, starting from the time of Rasulullah until the power of Turk Usmani. Due to the development of science and technology, this study aims to formulate Middle East’s education systems. This research uses the type or approach of library research, namely the study of theory, scientific reference, and scientific literature related to the developing norms, values, and culture over a studied social situation. Results of this research show that the implementation of the education system in the countries in the Middle East cannot be separated from the history of Islamic education in its emergence. Until now, these countries, like Iraq, Saudi Arabia, and Egypt, are still adopting education systems focused on Islamic teachings. Saudi Arabia has a particular education in the Islamic field to prepare a clerical council.

Experiment and theory study on the electrical property of MWCNT filled thermoplastic polyurethane bilayer composites with tunable layer thickness ratios

The thermoplastic polyurethane (TPU)/multi-walled carbon nanotubes (MWCNTs) filled TPU (cTPU) bilayer composites with tunable layer thickness ratios were fabricated via layer-assembly coextrusion, while keeping the filler loading in whole composite at 1 wt%. The parallel circuit model was used to predict the electrical resistivity of bilayer composites, but the theoretical value was always lower than the experimental result. It was revealed that the predicted deviation originated from the particle transfer at interface and gradually disappeared with the enhanced migration of MWCNTs from cTPU into TPU. Then, the model was modified with a consideration of particle transfer and applied to explain the evolution of predicted deviation. Unlike the blend composite with the same composition exhibiting an insulation, the bilayer composites presented a good conductivity which could be greatly optimized by thinning the cTPU layer. The bilayer composites also possessed balanced mechanical properties and showed excellent absorption-dominated electromagnetic interference shielding effectiveness. This work offers guidance for tailoring the performance of conductive polymer composites.

Effectiveness of Student-Led Interventions on Improving Diabetes Outcomes: A Systematic Review

ABSTRACT Background Diabetes education and treatment is a public health priority. Student-delivered strategies have the potential to offer low-cost, high-quality healthcare services to underserved patients while giving students practice experience. However, the effectiveness of these interventions is unknown. Purpose To document study characteristics and the effectiveness of student-delivered interventions on diabetes health outcomes. Methods Databases searched included Medline, CINAHL Plus, and others. Appropriate keywords/subject headings were used to identify studies meeting inclusion criteria. Two reviewers independently extracted data which were compared, and conflicts resolved by discussion. Results Seven studies met inclusion criteria. Six had statistically significant improvement in outcomes including HbA1c, a long-term glycemic control indicator (n = 4), blood pressure (n = 3), physical activity (n = 1), and exercise stage of change (n = 1). Studies involved medical (n = 3), pharmacy (n = 2), nursing (n = 1), and exercise science (n = 1) students. Studies with improved outcomes tended to have more patient contact. Discussion This review provides evidence that student-led diabetes interventions may be effective at improving outcomes, although studies reviewed are limited by lack of comparison groups and representative samples. Translation to Health Education Practice: Student-delivered diabetes interventions may improve outcomes, especially with adequate patient contact time. Studies of theory- and evidence-based student-led diabetes interventions involving health education/promotion students are warranted.

Pilot study of self-determination theory and motivational interviewing intervention targeting need satisfaction, motivation, and procrastination.

Pilot study of self-determination theory and motivational interviewing intervention targeting need satisfaction, motivation, and procrastination.

Optimization Model of Mathematics Instructional Mode Based on Deep Learning Algorithm.

This paper proposes corresponding teaching methods and instructional modes based on predecessors' research on mathematics instructional mode and the current state of mathematics teaching. In addition, this paper constructs a teaching evaluation model based on DL algorithm based on an in-depth study of DL-related theories in order to accurately and scientifically analyze the problems that exist in mathematics teaching. This paper constructs an instructional quality evaluation index system based on rationality and fairness, and uses the BPNN evaluation model to train and study a set of instructional quality data. Finally, the experimental results show that this system has a high level of stability, with a 96.37 percent stability rate and a 95.42 percent evaluation accuracy rate. The results of this paper's evaluation of the mathematical instructional quality model are objective and reasonable. It can accurately assess instructional quality while also assessing problems in the teaching process based on the instructional quality scores and making reasonable recommendations for teaching improvement based on the weak links in the teaching process. It has the potential to provide a workable system for assessing instructional quality.

Mathematics communication as an alternative to overcome the obstacles of undergraduate students in mathematical proof

Experiences at the educational personnel education institution, Department of Mathematics Education Institute of Teacher Training and Education Pontianak (IKIP) shows that students often had difficulty in proving propositions (theorems in mathe-matics). The alternative offered through this study was to develop students' abilities in proof through mathematical communication. The study method used in this study was qualitive research, case study. The subjects used in this study consisted of two un-dergraduate students who had been taught real analysis introductions and. The data collection tool used was tests and interview. Data analysis techniques used was de-scriptions: data reduction, data display and conclusion. Based on the results of re-search, study of theory and discussion, it could be concluded in this study that the student obstacles in answering mathematical proof questions are the students have difficulty in writing mathematical symbolic and inability in mathematical proof. But after being given didactic anticipation by mathematical communication, the ability of students to answer mathematical proof questions has increased. Thus, mathematical communication can be used as an alternative to overcome obstacles or difficulties for students in solving mathematical proof problems.

State Finland Education System and Finland Education Best Pratice

In the study of theory and literacy described, it can be seen about the education system in Finland, namely the following reasons: 1. The education system in Finland is flexible, making it easier for all components of education to develop teaching methods and techniques. And encourage students to be more flexible in understanding knowledge. 2. Comprehensive education for all. Financial education assistance by the government and free of charge in learning to answer the problems of people who need education as a way to improve their standard of living. 3. Inclusion-based education. Students with special needs continue to receive the same education and the same assistance from the government as well as the components of education. 4. A job as an educator who is highly valued and has a good selection makes teaching performance considered good. 5. Famous for the results of research conducted by many students and other components, making knowledge always developing.

A Review of the Impact of Network Embeddedness Selection on Firm Performance and Its Application

Enterprise network is a key element to the continuous growth of enterprises, and embeddedness is an important tool to study enterprise network. In the context of today's digital economy, the relevant theory that embeddedness affects enterprise performance is rapidly innovating and expanding. Moreover, its application involves the entire industrial network and enterprise network composed of government, industry and enterprises, which is widely used. At the same time, with the further maturity of internet technology and the further study of enterprise network theory, the research on embeddedness can provide theoretical basis and methodological guidance for decision-making on how to embed network to acquire core competitiveness.

PENGEMBANGAN KOMPETENSI TEKNOLOGI INFORMASI KOMUNIKASI BAGI APARATUR SIPIL NEGARA DINAS KOMUNIKASI, INFORMATIKA, DAN STATISTIK KABUPATEN BANDUNG

The development of Information and ommunication Technology (IT) competencies is an important thing that the Civil Servant (ASN) needs to be able to carry out their duties in the digital era. One of the implementations of digitalization in government organizations is e-government. One of the regional apparatus that is close toimplementing e-government is the Department of Communication, Informatics and Statistic, Bandung Regency. As a leading sector in the field of technology in Bandung Regency, it is necessary for ASN who have competence in the field of ICT. But in fact, the number of employees who have competence in the field of ICT is still minimal so that it makes the authors interested in conducting this research. The purpose of this study was to determine the implementation of ICT competency development for ASN at the Department of Communication, Informatics and Statistic, Bandung Regency throught Hasibuan’s (2007) theory study which consist of 2 dimensions, namely formal development and informal development. This study use a qualitative descriptive method with an inductive approach. Based on the results of the research, it is known that the implementation of formal competency development is carried out throught education and training in collaboration with third parties and requires a budget so that it cannot be implementation evenly. Meanwhile, informal competency development is carried out by means of independent training so that it cannot obtain maximum results compared to throught education and training. Efforts are being made to improve the competence of ASN in the ICT sector by prioritizing the training budget, as well as motivating unskilled employees to improve their competence by learning from more skilled colleagues so as to create a work team that can work together to support organizational performance. 
 
 Keywords : Competency Development, Information and Communication Technology, Civil Servant

Applying Religious Studies Discourse during Wartime: On Katō Totsudō’s Discussion of Religious War

This paper argues how the study of religion in Japan influenced the nation’s conduct during the Asia-Pacific War (1931–1945). Specifically, the paper addresses the wartime national indoctrination texts of Katō Totsudō 加藤咄堂 (a.k.a. Katō Yūichirō 加藤熊一郎, 1870–1949). Although Katō was not strictly a religious scholar, analyzing Katō’s texts is significant in understanding the influence of religious theory and religious studies discourse on Japanese society during the war. To illustrate this point, this paper introduces previous studies that have discussed the movements of religious scholars during the war. It then clarifies the significance of discussing Katō’s texts, followed by an introduction to what has been revealed about Katō so far. The paper then examines Katō’s wartime texts that discuss the relationship between war, faith and the readiness to die. The East–West comparison of views of life and death used by Katō was characterized as a wartime application of comparative religion. It was intended to emphasize Japan’s superiority over other countries. Such features agitated Japanese readers to proactively enter the fight to the death through spiritual mobilization in a total war system.

“Doomed by the Confusion in Their Design”: Racialized Urban Space, Redlining, and Monolithic Whiteness in Paule Marshall’s Brown Girl, Brownstones

Abstract While Paule Marshall’s novel Brown Girl, Brownstones (1959) has long been celebrated as a pivotal text in the canon of Caribbean American and African American women's literature, not enough attention has been paid to the material conditions underlying the coming-of-age story of her main protagonist, Selina Boyce. A close reading of the novel’s engagement with urban space—in particular with the changes that Brooklyn's Bedford-Stuyvesant neighborhood undergoes in the late 1930s and early 1940s—reveals not only that the text contains an astute critique of American race formation at one of its most crucial moments, namely in the context of the New Deal’s policies of redlining and white flight, but also that Marshall ought to be considered as an early, but important, voice of both critical race theory and whiteness studies.

A Queer Lesbian Feminist Ecopoetics

AbstractThe author elaborates the intersection of environmental theory and queer theory through a reading of the figure of the lesbian, which scholars, like Robyn Wiegman, Valerie Traub, and Lynne Huffer, have recently used to argue for a more nuanced reconsideration of gender in contemporary queer theory and queer studies. The author argues that the burgeoning field of queer ecopoetics can offer a productive response to recent calls to forge feminism alongside queer theory. The author takes the poet Muriel Rukeyser (1913–80) as a case study for a queer, lesbian, feminist ecopoetic praxis. Through a reading of three poems, the author demonstrates that, for Rukeyser, questioning human ontological boundaries is inextricable from her exploration of queer human desire, and especially inextricable from her vision of queer futurity. Furthermore, this essay shows how queer ecopoetics offers a common ground for the beyond-human, kinship-building impulses of environmental thought and for queer theory's congruent impulses of erotic and world-building relationality (as best illustrated in José Esteban Muñoz's Cruising Utopia). The author contends that what most cogently binds ecopoetics to queer theory is a deep commitment to anti-anthropogenic ethical praxis, which parallels the ethics described by Lee Edelman as a radical challenge to the social itself.

Reactivity of 4,5-Dichlorophthalic Anhydride towards Thiosemicarbazide and Amines: Synthesis, Spectroscopic Analysis, and DFT Study.

The cyclic anhydrides are broadly employed in several fields, such as the chemical, plastic, agrochemical, and pharmaceutical industries. This study describes the chemical reactivity of 4,5-dichlorophthalic anhydride towards several nucleophiles, including thiosemicarbazide and different amines, to produce the carboxylic acid derivatives resulting from anhydride’s opening, namely, phthalimide and dicarboxylic acid (1–12) products. Their chemical structures are confirmed by NMR, IR and MS spectra analyses. Density–functional theory (DFT) studies are performed using (DFT/B3LYP) with the 6-311G(d, p) basis sets to recognize different chemical and physical features of the target compounds.

Features of the study of foreign theories of political leadership in diTerent periods of development of domestic political science

The article is dedicated to the comparative content-analysis of the two excerpts, considering foreign political leadership theories for the Russian readers and researches and related to the different stages of Soviet and Russian political science development. There are also quotative and quotative analyses of the theories provided by the author.

PARAMETERS IN FORMULATIONS AND SOLUTIONS OF INTRODUCTORY PROBABILITY PROBLEMS

Mathematical problems with parameters offer a higher semiotic complexity level of mathematical activities. The topicality of the research is determined by the fact that there are no studies on types of parameters in formulations and solutions of probability problems. The study aims are to analyse the current literature and propose an approach to classify parameters depending on their nature. Methodology - qualitative content analysis of probability problems from published textbooks and research papers. The main result - a parameter classification and interpretation scheme for introductory probability problems. The proposed parameter classification can help differentiate and individualise the study of probability theory and statistics.

Operator Calculus Approach to Comparison of Elasticity Models for Modelling of Masonry Structures

The solution of any engineering problem starts with a modelling process aimed at formulating a mathematical model, which must describe the problem under consideration with sufficient precision. Because of heterogeneity of modern engineering applications, mathematical modelling scatters nowadays from incredibly precise micro- and even nano-modelling of materials to macro-modelling, which is more appropriate for practical engineering computations. In the field of masonry structures, a macro-model of the material can be constructed based on various elasticity theories, such as classical elasticity, micropolar elasticity and Cosserat elasticity. Evidently, a different macro-behaviour is expected depending on the specific theory used in the background. Although there have been several theoretical studies of different elasticity theories in recent years, there is still a lack of understanding of how modelling assumptions of different elasticity theories influence the modelling results of masonry structures. Therefore, a rigorous approach to comparison of different three-dimensional elasticity models based on quaternionic operator calculus is proposed in this paper. In this way, three elasticity models are described and spatial boundary value problems for these models are discussed. In particular, explicit representation formulae for their solutions are constructed. After that, by using these representation formulae, explicit estimates for the solutions obtained by different elasticity theories are obtained. Finally, several numerical examples are presented, which indicate a practical difference in the solutions.

Mechanism-Dependent Selectivity: Fluorocyclization of Unsaturated Carboxylic Acids or Alcohols by Hypervalent Iodine.

To understand the unprecedented difference between 6-endo and 5-exo selectivity in hypervalent iodine (III) promoted fluorocyclization of unsaturated carboxylic acids or alcohols by difluoroiodotoluene, density functional theory (DFT) studies have been performed to systematically compare both the previous proposed “fluorination first and cyclization later” mechanism and the alternative “cyclization first and fluorination later” mechanism. Our results revealed that the selectivity is mechanism-dependent. The unsaturated alcohol prefers the fluorination first and the 6-endo-tet cyclization later pathway, leading to the experimentally observed 6-endo ether product. In contrast, the unsaturated carboxylic acid plausibly undergoes the 5-exo-trig cyclization first and the fluorination later to the experimentally observed 5-exo lactone product. The pK a property of the functional group of the substrate is found to play a key role in determining the reaction mechanism. The provided insights into the mechanism-dependent selectivity should help advance the development of fluorocyclization reactions with hypervalent iodine reagents.

A Study on Cross-Media Teaching Model for College English Classroom Based on Output-Driven Hypothetical Neural Network.

In the field of education, the development of educational big data has become an important strategic choice to promote the construction of the digital campus and educational reform, and educational big data has become a new driving force in the field of education that cannot be ignored. Based on the theoretical basis of output-driven hypothesis neural network, and combining the media spanning of contemporary art and cross-media association effect, this study changes the status quo of English teaching through traditional methods such as grammar-translation method and deductive method and constructs a new cross-media university English teaching model. Based on the existing feature learning model of two-way attention, combined with existing techniques such as generative adversarial networks and semantic hashing, the semantic association between different media data is deeply mined, and feature learning is integrated with adversarial learning and hash learning to build a unified semantic space for different media data. In this paper, we focus on the structure and characteristics of convolutional neural networks through the study of deep learning theory, discuss three classical convolutional neural network models, such as AlexNet, VGG, and GoogLeNet, and propose a convolutional neural network model applicable to cross-media teaching in college English classroom and carry out experimental validation, and the results show that the proposed neural network model is based on output-driven hypothesis. The following research has been added to the abstract: to address the key problem of the semantic gap that is difficult to cross in cross-media semantic learning, a cross-media supervised adversarial hashing model based on two-way attentional features is proposed. Based on the existing two-way attention-based feature learning model, we combine existing techniques such as generative adversarial networks and semantic hashing to deeply explore the semantic association between different media data and integrate feature learning with adversarial learning and hashing to build a unified semantic space for different media data. The results show that the proposed neural network model of cross-media teaching in college English classrooms based on the output-driven hypothesis can not only promote the improvement of students' English literacy skills but also have a certain promotion effect on their overall performance improvement.

Heat/PMS Degradation of Atrazine: Theory and Kinetic Studies

The degradation effect of heat/peroxymonosulfate (PMS) on atrazine (ATZ) is studied. The results show that the heat/PMS degradation for ATZ is 96.28% at the moment that the phosphate buffer (PB) pH, temperature, PMS dosage, ATZ concentration, and reaction time are 7, 50 °C, 400 μmol/L, 2.5 μmol/L, and 60 min. A more alkaline PB is more likely to promote the breakdown of ATZ through heat/PMS, while the PB alone has a more acidic effect on the PMS than the partially alkaline solution. HO• and SO4−• coexisted within the heat/PMS scheme, and ATZ quantity degraded by HO• and SO4−• in PB with pH = 7, pH = 1.7~1. HCO3− makes it difficult for heat/PMS to degrade ATZ according to inorganic anion studies, while Cl− and NO3− accelerate the degradation and the acceleration effect of NO3− is more obvious. The kinetics of ATZ degradation via heat/PMS is quasi-first-order. Ethanol (ETA) with the identical concentration inhibited ATZ degradation slightly more than HCO3−, and both of them reduced the degradation rates of heat/PMS to 7.06% and 11.56%. The addition of Cl− and NO3− increased the maximum rate of ATZ degradation by heat/PMS by 62.94% and 189.31%.