Basis For Integration Research Articles

ON A CONJECTURE OF LENNY JONES ABOUT CERTAIN MONOGENIC POLYNOMIALS

AbstractLet $K={\mathbb {Q}}(\theta )$ be an algebraic number field with $\theta $ satisfying a monic irreducible polynomial $f(x)$ of degree n over ${\mathbb {Q}}.$ The polynomial $f(x)$ is said to be monogenic if $\{1,\theta ,\ldots ,\theta ^{n-1}\}$ is an integral basis of K. Deciding whether or not a monic irreducible polynomial is monogenic is an important problem in algebraic number theory. In an attempt to answer this problem for a certain family of polynomials, Jones [‘A brief note on some infinite families of monogenic polynomials’, Bull. Aust. Math. Soc.100 (2019), 239–244] conjectured that if $n\ge 3$ , $1\le m\le n-1$ , $\gcd (n,mB)=1$ and A is a prime number, then the polynomial $x^n+A (Bx+1)^m\in {\mathbb {Z}}[x]$ is monogenic if and only if $n^n+(-1)^{n+m}B^n(n-m)^{n-m}m^mA$ is square-free. We prove that this conjecture is true.

Invariance embedded physics-infused deep neural network-based sub-grid scale models for turbulent flows

In this paper, we present two novel physics-infused neural network (NN) architectures that satisfy various invariance conditions for constructing efficient and robust Deep Learning (DL)-based sub-grid scale (SGS) turbulence models for use in Large Eddy Simulation (LES) procedures widely used in various fluid engineering applications. The first architecture, called tensor basis neural networks (TBNN), recently proposed in the context of Reynolds-averaged Navier–Stokes (RANS) modeling, and introduced herein for SGS modeling of wall-bounded turbulence, embeds the analytical expansion of the SGS turbulence stresses into integrity basis tensors composed of the symmetric and anti-symmetric parts of the resolved velocity gradient tensor, thus incorporating the Galilean, rotational and reflectional invariances. In our second approach, a relatively simple yet powerful architecture, called Galilean Invariance embedded Neural Network (GINN) incorporates the Galilean invariance, and takes in as inputs the independent components of the integrity basis tensors in addition to the invariant inputs in a single input layer. Explicit filtering of data from direct simulations of the canonical channel flow at two friction Reynolds numbers Reτ≈395 and 590 provided accurate data for training and testing these models. Both sets of models are used to predict the SGS stresses for feature datasets generated with different filter widths, and at different Reynolds numbers. The GINN model yields less prediction error on test datasets (mean squared error ∼0.4) compared to the TBNN model (mean squared error ∼0.5). Upon comparison, it is revealed that GINN has better feature extraction capacity owing to its ability to establish relations between and extract information from cross-components of the integrity basis tensors and the SGS stresses. Based on their predictive performance, both models proposed herein have shown great promise for use in a posteriori actual LESs. The present work illustrates the significance of physics infusion as well as invariance embedding into NN architecture for constructing efficient and robust DL-based SGS turbulent models in achieving superior predictive efficacy.

Human and ethical risks of digitalization

Digitalization as a direct expression of global information business is the reason for modern civilization’s transformation. The total commercialization of information technologies’ super-productivity turns humans into progress »costs«, devaluing their creative power, morality and ethics. Therefore, the object of this study is to be a person in the face of growing ethical risks caused by ever-accelerating digitization and information processes. The purpose of the work is to identify the problems of ethics and ethical risks as specific and most significant for the digital society. It also shows the main approaches to their solution. An analysis of a person’s consumer attitude to technical achievements reveals the reasons for spirituality destruction as the basis of human integrity. This is due to changes in communication forms – language, art, education, and religion. Digitalization as open information makes it possible to specify ethical risks as a reflection of a human’s life situation. Values and meanings play a crucial role. Digitalization’s ethical risks are identified: privacy, inclusiveness, security, trust, and fairness. The main approach to preventing digitalization ethical risks is the establishment of a techno-humanitarian balance or the development of adequate cultural regulators (human-centricity, overcoming digital inequality) that oppose the growth of destructive power of new technologies in relation to universal human values and humaneness. The methodological basis of the study was the philosophical discourse of consequentialism. This determines the main condition for technology development to find a balance between risk and benefit and cultural and philosophical reflection. The theoretical conclusions contained in this work open up new opportunities for science to concretize practical approaches to solving moral problems and ethical risks in human existence. This is in the era of digital culture transformation.

Fast norm computation in smooth-degree Abelian number fields

This paper presents a fast method to compute algebraic norms of integral elements of smooth-degree cyclotomic fields, and, more generally, smooth-degree Galois number fields with commutative Galois groups. The typical scenario arising in S-unit searches (for, e.g., class-group computation) is computing a Theta (nlog n)-bit norm of an element of weight n^{1/2+o(1)} in a degree-n field; this method then uses n(log n)^{3+o(1)} bit operations.An n(log n)^{O(1)} operation count was already known in two easier special cases: norms from power-of-2 cyclotomic fields via towers of power-of-2 cyclotomic subfields, and norms from multiquadratic fields via towers of multiquadratic subfields. This paper handles more general Abelian fields by identifying tower-compatible integral bases supporting fast multiplication; in particular, there is a synergy between tower-compatible Gauss-period integral bases and a fast-multiplication idea from Rader.As a baseline, this paper also analyzes various standard norm-computation techniques that apply to arbitrary number fields, concluding that all of these techniques use at least n^2(log n)^{2+o(1)} bit operations in the same scenario, even with fast subroutines for continued fractions and for complex FFTs. Compared to this baseline, algorithms dedicated to smooth-degree Abelian fields find each norm n/(log n)^{1+o(1)} times faster, and finish norm computations inside S-unit searches n^2/(log n)^{1+o(1)} times faster.

Abstract 14681: Coronary Artery Calcium is Associated With Cardiovascular Disease and Poorer Survival in Patients Undergoing Autologous Hematopoietic Cell Transplantation

Background: Hematopoietic cell transplantation (HCT) is an established curative treatment for patients with hematologic malignancies, however survivors are at a >4-fold risk of cardiovascular disease ([CVD] heart failure, myocardial infarction, stroke]) compared to the general population. Coronary artery calcium (CAC) is predictive of CVD in non-oncology patients; less is known about its association with CVD risk and outcomes after HCT. Methods: This was a retrospective cohort study of 243 consecutive patients who underwent first autologous HCT for Hodgkin/non-Hodgkin lymphoma between 2009-2014 with no history of CVD. CAC was determined from chest computed tomography performed <60d from HCT; measurements (Agatston unit) were made by trained researchers blinded to patient demographics and outcomes. CAC was categorized as: 0, 1-100, >100. Multivariable Cox regression analysis was used to calculate hazard ratio (HR) estimates and 95% confidence intervals (CI), adjusted for covariates (age, conventional risk factors [e.g. hypertension, dyslipidemia], cancer treatment). Results: Median age (range) at HCT was 55.7y (18.5y-75.1y), 59% were male; race/ethnicity: non-Hispanic white (60%), Hispanic (25%), Asian (11%), Black (4%); prevalence of CAC was 37%. The 5y CVD incidence for the cohort was 12%, and there was an incremental increase according to CAC score: 0 (6%), 1-100 (20%), >100 (32%); p=0.001 (Figure 1A). CAC was significantly associated with CVD risk (HR 3.0, 95%CI 1.2-7.5) and worse 5y survival (77% vs. 50% p<0.001 [Figure 1B]; HR 2.0, 95%CI 1.1-3.4), compared to those without CAC. Conclusions: CAC is an important and independent predictor of CVD and survival after HCT. Taken together, these data form the basis for integration of readily available imaging information into decision making prior to HCT (e.g. pre-habilitation, non-HCT approaches) or after HCT (e.g. cardiac rehabilitation), setting the stage for strategies to optimize outcomes after HCT.

EFFICIENCY OF THE TOURIST PRODUCT FORMATION PROCESS FROM THE POSITION OF INFORMATION AND COMMUNICATION PROVISION

Purpose. Modern development of tourism business requires complex business processes of automation taking into account not only the internal factors of enterprises, but also the influence of external environment on the basis of single informational tourist`s space of creation. The profit of tourist organization depends on many components in conditions of high rates of tourism products moral aging. Of course, to optimize profit it is needed to monitor income and expenses. However, monitoring these processes in real time is quite difficult as it is necessary to constantly monitor not only the result, but also a number of accompanying factors. The use of information and communication technologies in the tourist organization contributes to the improvement of the customer service quality, affects the creating new tourist products` process and provides support for tourist products`s implementation. In modern conditions, the expected benefits from the introduction of a new product can be obtained only through the use of modern ICT capabilities. Improving communication access and increasing the efficiency of internal and external communications will create conditions for effective tourist products/services promotion. Design/methodology/approach. To determine the essence of tourist’s product’s conception and the characteristics of tourist product formation stages, the method of theoretical generalization including elements of analysis, synthesis and systematization was used. Graphical and tabular data of display techniques were usedfor visual presentation of research results. Evaluation of the information level and communication support for the tourist product formation process was carried out on the basis of integral indicator use of the weighted average and expert evaluation`s method. The method of logical generalization and systematic approach was applied to come to conclusions. Findings. Determining the effectiveness of information and communication support in the process of forming a tourist product is a critically important element for the competitiveness and success of tourism enterprises in the modern world which indicates the relevance of the research topic. The article analyzes the process of forming a tourist product from the point of view of information and communication support (ICT). Originality/value. The proposed model, developed on the integral indicator model basis of the weighted average, will help tourism enterprises to determine the effectiveness of information and communication support of tourist product formation process and to take measures to ensure the success from this process. Considering the value of ICT, this model becomes an indispensable part of the strategy for tourism companies in today’s digital world.

Establishing scientific educational space within the university: factors contributing to successful Eurasian integration

Introduction. The problem of the article is to focus on a range of aspects in the field of integration of science and higher education, which play an important role in the process of establishing the Eurasian scientific and educational space. The purpose of the article is to identify factors contributing to successful Eurasian integration in the process of establishing scientific educational space within the university. Materials and Methods. The theoretical and methodological basis of the study is made up of general scientific (philosophical) methods and a systematic approach. The subject of the study required the use of a combination of different approaches, primarily systemic, which allowed to conduct the correct analysis of applying historically established and modern educational technologies and practices in Eurasian education, as well as to describe some aspects of the effective integration of science and education in the Eurasian space. The object of the study is the experience of the University under the IPA EurAsEC on developing a system of scientific, organizational, research, publishing and educational activities in the Eurasian space. The authors used the following research methods: comparative, historical, interdisciplinary, content analysis method, etc. Results. The article considers the experience of using methods of ethno pedagogy in preparing innovative staff for the Eurasian space as a means of developing scientific and educational cooperation, expanding Eurasian integration, and giving it a humanitarian dimension. The authors substantiate the idea that strengthening and expanding the capabilities and needs of a unified Eurasian scientific and educational space should be considered as conditions for achieving effective cooperation in the field of science and education, allowing to restore professional communication of researchers from different Eurasian countries, update the content of higher education and contribute to bringing new scientific knowledge to the scientific community. The authors emphasize that a significant contribution to the development of the Eurasian integration process is made by the University under the IPA EurAsEC, which initiated a number of international projects contributing to the inclusion of new scientific knowledge and methods in the educational process within the framework of Eurasian economic integration. Conclusions. The article concludes about the values of higher education and about a need for integrating science and education as a basis for further development of Eurasian integration process. The authors draw the conclusion that today integration must be based on the historical experience of cooperation between Eurasian states in the field of science and education. Such interaction is considered to be the basis for further successful integration.

Well-Rounded ideal lattices of cyclic cubic and quartic fields

In this paper, we find criteria for when cyclic cubic and cyclic quartic fields have well-rounded ideal lattices. We show that every cyclic cubic field has at least one well-rounded ideal. We also prove that there exist families of cyclic quartic fields which have well-rounded ideals and explicitly construct their minimal bases. In addition, for a given prime number $p$, if a cyclic quartic field has a unique prime ideal above $p$, then we provide the necessary and sufficient conditions for that ideal to be well-rounded. Moreover, in cyclic quartic fields, we provide the prime decomposition of all odd prime numbers and construct an explicit integral basis for every prime ideal.

On the decision-making on the choice of GTM - assessment of the current status and development perspective

This article analyzes the current state of problems associated with the choice of well interventions based on the analysis of accumulated scientific and practical experience for various fields. Let us note the fact that recently there has been a development and improvement of analytical methods for forecasting indicators, followed by the adoption of an informed decision, the implementation of which allows improving the quality of conducted geological and technical measures. The accumulated experience of research work makes it possible to solve the problems of creating a methodology on an integrated basis with its mathematical, software and information support in order to optimize the planning process of geological and technical operations, to develop the structure of automated systems and algorithms for their functioning, it was possible to build linear and multiplicative algorithms based on the transformation of reservoir characteristics into the form relevant factors, the purpose of which is to express the dependence of the effectiveness of measures taken on the characteristics formed.

THE RELATIONSHIP OF THE PRINCIPLE OF INDEPENDENCE OF JUDGE AND THE PROCEDURE OF ELECTION (APPOINTMENT) TO POSITIONS MEMBERS OF THE HIGH COUNCIL OF JUSTICE

Abstract. The purpose of the scientific article is to establish the relationship between the principle of independence of a judge and the procedure for the election (appointment) of members of the High Council of Justice. The methodological basis of the study was the method of legal science as a system of means of learning law. The conceptual and methodological basis of the work was a comparative legal and comprehensive approach. It was emphasized that a judge has the inherent freedom to impartially and impartially perform his professional duties without political interference. It is substantiated that, based on the fact that constitutional power in Ukraine should be exercised on the basis of continuity and integrity.

CHILDREN WITH A MIGRATION HISTORY IN THE EDUCATIONAL SYSTEM OF ORENBURG REGION

Schools and kindergartens of Orenburg region, as well as many other regions of Russia, from the early 2000s began to accept children from migrant families of Central Asia and Transcaucasia for education. In the 2010s, this trend intensified, and classes began to be filled with already significant groups of children whose families had moved to the region over the past ten years. Orenburg Region is multinational in itself, so the influx of non-ethnic migrants only increased the multicultural nature of children’s and pedagogical collectives.
 
 The purpose of the study is to determine the level of linguistic and socio-cultural adaptation of children with a migration history in the region, the degree of readiness of Orenburg region educational organizations to receive foreign minors and to form ideas about the attitudes of migrant families and students themselves for full socio-cultural integration into the Russian society.
 
 Methods and materials. The source base of the study was made by statistical materials on migration processes, in-depth interviews and conversations with teachers and administration of educational organizations in Orenburg region, diagnostic examination of non-native speaking schoolchildren in three educational organizations of the region using a special technique.
 
 The scientific novelty of the research lies in combination of applied ethnographic tools with the study of the current situation in the educational system of the region. The authors answer the problematic question: how to organize the work on linguistic and socio-cultural adaptation of foreign-speaking students, depending on the proportion of children with a migration history at school, the level of teachers’ education and qualification on the example of specific educational institutions in the cities Orenburg and Orsk, a suburban district of Orenburg region.
 
 Study results. The data collected in a number of Russian cities in 2021–2022, including in the region under study, are analyzed, which give the opportunity to assert that the proportion of children from migrant families in school and the native language of foreign-speaking children are not the determining factors in the progress of linguistic and socio-cultural adaptation by means of education. The article gives a description of an approximate distribution of students with a migration history participating in the study in four groups, depending on the recommended model of language adaptation. The factor that significantly complicates the activities on linguistic and socio-cultural adaptation of migrant children in the conditions of the Orenburg region is emphasized: this is a “pendulum” migration, as well as long summer and winter holidays, when parents send their children to their homeland “to grandparents”, not really considering the need to support language practice. The data obtained during the study indicate that the majority of students with a migration history in Orenburg region associate their future with Russia: it is very important to support such children at the initial stage of adaptation and training in a Russian school, because, as a rule, they will be motivated to successfully study and move up the social ladder if the language barrier is overcome.
 
 Conclusions. In general, the experience of many years of positive interethnic interaction accumulated in Orenburg region and reasonably structured national and migration policies create the basis for successful adaptation and integration of migrant families arriving in the region. However, if we talk about the educational system of Orenburg region, then in order to successfully solve the tasks of linguistic and socio-cultural adaptation of children with a migration history, Orenburg region schools need additional staff and financial support.

APPLICATION OF SIMULATION TECHNOLOGIES AND CASE-METHOD IN PROFESSIONAL TRAINING OF FUTURE DENTISTS

Implementation of innovative learning and teaching methods based on modern pedagogical technologies is essential for further eff ective development of higher stomatological education. At the current stage of development of the public health sphere, more and more attention is paid to patient safety, ethical issues, increasing responsibility of medical staff , high level of professional qualifi cation and rapid evolution of procedures and methods. The above requires adaptation of educational programs and the use of all the educational instruments and technologies available in professional training of future dentists. Objective of the study was to conduct a theoretical analysis of scientifi c psychological- pedagogical, methodological and medical publications, educational- methodological activity of the Department concerning application of pedagogical technologies in the process of professional training of future dentists. Material and methods. Psychological-p edagogical, methodological literature, materials of scientifi c-p ractical conferences, and educational- methodological activity of the Department were analyzed. To achieve the goal, specify the essence and peculiarities of application of modern pedagogical technologies in the educational process the following theoretical methods were used: analysis, synthesis, substantiation, comparison, systematization, pedagogical modeling, and theoretical prognosis. Conclusions. Application of simulation educational technologies and case-method in training of future dentists promotes formation of abilities and practical skills, professional competence, personal development, ability to possess optimal behavior and diff er in the eff ectiveness of actions in various clinical situations. Simulation training allows you repeatedly and accurately reproduce important scenarios and algorithms of actions, and provides the opportunity to adapt the educational situation for every student. Application of modern pedagogical technologies in learning and teaching the academic discipline «Surgical Dentistry» provides controlling, teaching and educational functions. Controlling function includes assessment of student knowledge and skills, teaching function requires certain level of knowledge achieved, and educational function provides formation of essential individual qualities by learners. Eff ective organization of independent and classroom activities of students by the teacher promotes development of clinical thinking, which is an integral basis for the formation of qualifi ed and successful doctors.

Risk of incorrect choices due to uncertainty in BPS evaluations of conceptual-stage neighbourhood-scale building designs

At the conceptual-stage, building performance simulation (BPS) based evaluations are being increasingly used for tasks such as ranking of competing massing design proposals. However, such conceptual stage evaluations suffer from information deficiency in building level design attributes. The resulting uncertainty in performance evaluations raises questions regarding their usefulness for decision-making. We used a risk-based decision evaluation metric called expected opportunity loss to assess the reliability of a BPS-based ranking of conceptual stage massing schemes. We found daylighting assessments (spatial Daylight Autonomy) to be least reliable, with 22% chance of making an incorrect decision at the conceptual stage, followed by annual heating (15%) and cooling demand (8%). This work provides a structured framework for evaluating utility of conceptual stage BPS models and a purposeful basis for integration of BPS assessments in the design process, subject to level of design development.

ASSESSMENT OF THE AGGREGATES IMPACT ON THE PROPERTIES OF RECOVERY POLYMER MORTARS

The peculiarities of polymer mortar application for renovation and restoration are determined on the basis of priority data integration about the destruction mode of valuable historical buildings. The possibilities of controlling technological, physical-mechanical, and operational properties of recovery polymer mortar due to the aggregates of different nature are shown. For the analysis and optimisation, the quantitative relations between the structure and property factors of recovery polymer mortars and the factors of recipes and technology determining them were obtained in the form of experimental and statistical models calculated using the COMPEX system. The optimisation methods of recipe and technological solutions based on the use of experimental and statistical models are proposed. The optimisation of polymer mortar composition according to the package of quality indexes and property stability at high temperature has been carried out. The package of "mixture-technology-properties" models has been obtained, with the help of which the change mechanisms of direct and summarizing indexes of mixture technological properties and mechanical properties of recovery polymer mortars have been established when changing the type of aggregates (ceramics, quartz, carbonates, their binary and triple mixtures). The influence of aggregates on the durability change of polymer mortar under the influence of various temperature-climatic and operational factors (UV-irradiation, alternate action of temperature and aggressive aqueous solutions) has been studied. It is recommended to use quantity and type optimal aggregates to provide the complex of technological and operational properties of polymer mortar and to reduce the consumption of imported polymer. The rational compositions of polymer mortar with increased stability of properties under changing temperature and climatic conditions are proposed for different restoration technologies. The series of nomograms have been developed for the initial selection of the "area" of rational polymer mortar compositions, providing for further correction in relation to a specific repairable object. Technological and marketing analysis according to the research results are carried out.

Evolution History of Chinese Han Nationality Reflect Great Integration of Chinese Nation

Based on the importance, necessity and feasibility of the great integration of Chinese Nation, this paper expounds the concept and origin of Nation. On this basis, the origin of the Han Nationality, the evolution of the Han Nationality carried on the historical retrospection and the historical context, the evolution of the Han Nationality was elaborated in detail. The evolution characteristics of the Han Nationality are analyzed in detail, pointing out that the Han Nationality originated from the Huaxia Nationality, dating back to the middle and upper reaches of the Yellow River during the period of Three Emperors and five emperors. According to the development of time, in the long course of history, the Han Nationality had constantly blended and integrated with the surrounding residents in the process of development. Through detailed analysis, it had been found that the Han nationality and other ethnic minorities in China share the same root, same origin, same ancestor and same lineage, which provides the theoretical basis and practical historical facts for the great integration of the Chinese nation. It provides historical evidence for the feasibility, importance and urgency of the great integration of the Chinese nation.

Cytologic features of the bulbar conjunctiva in patients with primary open-angle glaucoma-associated dry eye disease

Purpose: To examine the features of the bulbar conjunctiva in patients who developed dry-eye disease (DED) after drug treatment for primary open-angle glaucoma (POAG). Methods: Impression cytology was performed by applying twice a strip of cellulose acetate filter to the ocular surface to remove the superficial epithelial layers of the temporal bulbar conjunctiva. The strips were removed with a peeling motion in a few seconds, and the samples were immediately fixed in 95% ethyl alcohol, stained with hematoxylin and eosin, mounted on glass slides and coverslipped for light microscopy. Squamous metaplasia was graded according to Nelson’s grading system on the basis of cell morphology, staining and integrity as well as the nucleus-to-cytoplasm ratio. This study included a case group of 80 patients (mean age, 63.8 +- 6.7 years) with POAG-associated DED, with the group being divided into four subgroups. Subgroups 1 and 2 were composed of 40 patients each, with glaucoma duration of less or more than 5 years, respectively. Subgroups a and b were composed of 40 patients each, with a number of topical ocular hypotensive drugs used equal to one or at least two, respectively. The control group was composed of 20 apparently healthy volunteers (mean age, 67.9 +- 8.9 years). All patients underwent a routine eye examination. Results: All patients with glaucoma had symptoms of DED with Ocular Surface Disease Index (OSDI) scores of at least 15. In subgroup 1, 60% had Nelson’s grade 1 and 40%, Nelson’s grade 2 squamous metaplasia. In subgroup 2, 10% had Nelson’s grade 1; 60%, Nelson’s grade 2 and 30%, Nelson’s grade 3 squamous metaplasia. In subgroup a, 20% had Nelson’s grade 1; 60%, Nelson’s grade 2 and 30%, Nelson’s grade 3 squamous metaplasia. In subgroup b, 10% had Nelson’s grade 1; 60%, Nelson’s grade 2 and 30%, Nelson’s grade 3 squamous metaplasia. Conclusion: Changes in the bulbar conjunctival epithelium corresponded to Nelson’s grade 2 or 3 squamous metaplasia in 80% of patients who developed DED after drug treatment for POAG. The severity of squamous metaplasia correlated with the duration of glaucoma and, consequently, longer use of hypotensive eye drops (r1 = 0.15, p1 = 0.02, p2 = 0.01). Findings of the current study and international guidelines argue for the use of the medications containing no preservatives or potentially toxic components in long-term therapy against glaucoma.

Effectiveness of Parent-Child Interaction Therapy(PCIT) for Children with Problem Behavior: Meta-Analysis

Parent-Child Interaction Therapy (PCIT) is an evidence-based short-term treatment program designed for preschool children (2 to 7 years old) and parents with behavior or emotional problems, and is an effective intervention method to improve parent-child relationships and reduce children’s problem behavior. The purpose of this study is to estimate the effect of PCIT studied in Korea and to prepare an integrated basis. From 1991 to February 2022, papers studied in Korea were selected as exploration and target studies. A total of 17 studies were selected, and 11 studies (212 children, 12 father, 212 mother, 436 total) were finally included in the meta-analysis study, excluding 3 studies that presented the ranking sum. As a result of this study, the effect of PCIT improved children's problem behavior (1.32), reduced parenting stress (1.06) and mother's depression (0.99), and increased parenting efficacy (1.06) and spouse's parenting cooperation (0.86), which showed a significant effect (d>.8). This study is the first to conduct a meta-analysis on the effects of PCIT based on domestic literature and is expected to be widely used as a child counseling and parent education program.

An integrative model for online community citizenship behavior of luxury fashion brands on Instagram

PurposeThis study explores the creation of online brand relationships from the personal, social and brand perspectives of social media and its influence on the community citizenship behavior to establish an integrative model. With social identity theory (SIT) and the theory of socially shared cognition (TSSC) as the theoretical basis for model integration, this study identifies the key factors that maintain the relationship between online community members and brands and prompt brand members to establish a close emotional connection with the brand and generate community citizenship behavior for the brand.Design/methodology/approachThis study examines community members who own products from luxury fashion brands (e.g. Louis Vuitton, Chanel and Hermès) and have followed the official Instagram account of the luxury fashion brand for at least 1 year, with a total of 582 valid samples. Structural equation modeling (SEM) is used to test the model.FindingsAll except for one of the hypotheses are supported, and the theoretical model exhibits acceptable goodness-of-fit. The strongest effect is that of brand community identification on affective brand commitment, followed by that of online co-creation on community citizenship behavior and that of brand commitment on community citizenship behavior.Originality/valueSIT was used as the basis and extended to the TSSC to integrate the theoretical perspectives. This study identifies the online brand relationship between service providers and consumers, explores possible causes and consequences from multiple perspectives and proposes conclusions and practical management implications as references for marketing personnel.

Measurement of the integration level between the digital economy and industry and its impact on energy consumption

The integration of the digital economy and industry is the product of economic and social development and acts as an important driving force for conserving energy and reducing emissions. This study establishes the measurement index system of the integration level between the digital economy and industry from basis, conditions, and application of integration. Taking China as the research sample, this study chose 1999–2018 as the research period. The entropy weight TOPSIS method was employed to determine the integration level between the digital economy and industry. Next, a Bayesian vector autoregressive model was utilized to quantitatively analyze the impact of China's integration level between the digital economy and industry on energy consumption. The results indicate that China's integration level between the digital economy and industry shows a fluctuating upward trend with slow growth during the study period, and still has great development potential. The improvement of China's integration level between the digital economy and industry is conducive to the improvement of industrial energy efficiency, its consumption structure and environmental protection. Among them, the integration level between the digital economy and industry contributes the most to the change in the energy consumption structure and has the lightest impact on energy efficiency. Therefore, the government might make full use of green financial services to promote the integrated development of the digital economy and industry so as to achieve energy transformation and sustainable development.

Thermal Integration of Solid Oxide Electrolysis Cell Systems with External Heat Sources to Maximize Heat Recuperation and Exergetic Efficiency

Green hydrogen is expected to play a significant role as an energy carrier in the future energy system. As the issue of climate change due to greenhouse gas emissions has recently emerged, efforts are being made to change from a carbon-based energy society to a hydrogen-based energy society worldwide. Among several hydrogen production technologies, green hydrogen refers to hydrogen that does not generate carbon dioxide at all in production processes such as water electrolysis by using renewable energy. The hydrogen production through water electrolysis is more mature than other green hydrogen production technologies and is the most popular green hydrogen production method because it is easy to mass-produce with a modular structure. In particular, a solid oxide electrolysis cell (SOEC) system, which has the highest efficiency among electrolysis systems, is drawing significant attention.The high efficiency of SOEC systems originates from heat utilization for water electrolysis, which makes it critical to have optimal thermal integration. The SOEC systems operating at the high temperature above 700°C need a significant amount of thermal energy for steam generation and inlet gas heating. To deal with these thermal energy requirements, the internal heat recuperation and the external heat source integration with system components must be implemented in an effective manner. The thermal integration is the most important part of the SOEC system design. However, the majority of previous studies have concentrated on the performance of unit-cells and stacks, ignoring thermal energy consumption of the systems and heat integration.The purpose of this study is to explain the basis of thermal integration and to investigate the effects of internal and external thermal integration on the whole system performance. The basic concept of the thermal integration of SOEC system is presented while considering internal heat recuperation and coupling with external heat sources. By using temperature-heat transfer analysis, the procedure to design the optimal thermal integration of the SOEC system is described. Based on the proposed system, a parametric study with respect to stack operating conditions (i.e., stack inlet temperature, air utilization, steam conversion, hydrogen fractions) is conducted in order to elucidate their effect on the system level performance. Then, the effects of external heat sources such as steam injection, indirect heat transfer with hot fluids and heat supply by an electrical heater are examined, with pinch analysis and exergetic performance evaluation. The results show that high temperature external heat is not always a prerequisite for the SOEC system. The systematic comparison with several heat integration methods provides a clear guideline to maximize the exergetic efficiency when designing and operating SOEC systems. Through the analysis, this study provides understanding the internal and external characteristics of the thermal integration.