bluuebunny/crossref_metadata_2025 huggingface dataset:
Analysis of stress state of passenger car bodies
Authors: Martynov Igor , Kalabukhin Yuri , Trufanova Alyona , Martynov Stanislav
Published: June 2024

The overwhelming majority of compartment cars owned by Ukrzaliznytsia JSC were manufactured in Germany in the 70-80s of the last century. They have exhausted their resource. The metal structures of the frame and body are badly worn. Extending the service life of such cars requires a thorough study of the possibilities of their further use. The article discusses the results of an analysis of the stress-strain state of passenger car bodies. A three-dimensional model of the body was built. Body strength calculations were performed using the finite element method using the ANSYS software package. The racks and upper trim of the side walls, roof arches, etc. were considered as rods. The body frame, substructure, side wall cladding, end walls, roof cladding and floor deck were modeled using plate finite elements. Calculations were carried out in accordance with the requirements of current regulatory documents. The maximum speed was assumed to be 160 km/h. The developed model was verified. The results obtained were compared with the results of experimental studies (strength tests). The similarity of the results confirmed the correctness of the created model. A study was carried out of the stress-strain state of the body at nominal sizes with standard skin thicknesses. It has been established that the stresses arising in the most loaded areas do not exceed the permissible values for structural steels. The resulting model of the body will subsequently make it possible to determine the wear limits of the load-bearing structures of the frame and body. It also allows, using the calculation-probabilistic method, taking into account the probabilistic nature of all existing loads, to calculate the reliability indicators of the car and its final life.
Las Vegas Point Spread Values and Quantifying the Value of an NBA Player
Authors: Hoffer Adam , Pincin Jared A.
Published: June 2024

Abstract: This paper uses Las Vegas Sportsbooks individual point spread values (PSVs) to estimate the first marginal product estimates of NBA players. Starting with the individual PSVs, we predict PSVs from performance statistics and use the predicted values to estimate a player’s marginal product. We then compare the NBA estimations with existing, better-established measures of player performance, including player efficiency rating, win shares, and value over replacement player. The results show that the estimates using statistical performance to predict PSVs are in-line with other estimates of player performance. We conclude that PSVs are a comparable measure of marginal product to existing NBA performance composites.
Outcome Uncertainty and Demand for Baseball: A Single-Game Approach in the Korean Professional Baseball League
Authors: Jung Hoyoon , Moon Choon-Geol , Sung Yoon Tae
Published: June 2024

Abstract: This study tests the uncertainty of outcome hypothesis for single games and playoff appearances in the Korean Professional Baseball League from 2007 to 2015. Our panel data analysis shows that the difference in winning percentages between two teams and playoff uncertainty based on games behind are important factors for increasing game attendance. This study supports the potential importance of analyzing daily game attendance of the literature on diverse sport leagues. It also presents implications for policymakers and league owners—which typically leverage teams as promotional instruments—on improving the self-sustainability of sport teams.
Assessing the Impact of Transportation on Seal Behaviour: A Case Study from Ísafjörður, Iceland.
Authors: Milesi-Gaches David Pierre , Lhériau-Nice Alexandre
Published: June 2024

This study explores the behavioural responses of seals to various disturbances while hauling out within a transport hub featuring diverse transport facilities. Utilising Factor Analysis of Mixed Data (FAMD) on observations from September 2021 to May 2023 in Ísafjörður, Iceland, the research reveals that watercraft, particularly kayaks, significantly affect seal haul-out behaviour, triggering vigilance and flush responses. Aerial vehicles also induce stress responses, whereas road-based vehicles have lower impacts. These findings highlight the substantial influence of human activities, especially transportation, on seal haul-out behaviour, suggesting a need for mitigating strategies to reduce these impacts.
Medium- and Long-Term Impacts of Transit on Congestion: Jakarta’s Experience
Authors: Widita Alyas
Published: June 2024

This study marks the first attempt to examine the medium- and long-term effects of the MRT Jakarta opening on congestion. By employing Differences-in-Differences (DiD) models at six months and one-year post-inauguration, this study reveals the dynamic of congestion relief impact. Specifically, six months after opening, no significant impact was observed during the morning peak hour; however, after a year, average delays in treated corridors decreased by nearly 40%. During the evening peak hour, the same treated corridors experienced congestion reductions from 33.6% to 34.9%. In summary, this study provides novel insights into roadway performance dynamics, emphasizing the importance of continuous transit impact monitoring.
Te Reo Māori in the linguistic landscape of New Zealand
Authors:   Universidad Tecnológica de Guadalajara, García Hughes Jorge Germán
Published: June 2024

Māori or Te Reo Māori has become a vital part of the New Zealander’s lifestyle. One of the aspects where the Te Reo Māori can be most conspicuous in New Zealand is within its linguistic landscape: in the names of streets and in the country’s tourist signs. The aim of this work is the analysis of the linguistic landscape of Rotorua to determine the role Māori language plays in New Zealand culture and its linguistic and functional role in the territory of the country; and whether Kiwi culture currently uses Māori as a decorative language for English or is it truly a language with a growing identity beyond mere commercial aims. The result of this work was the analysis of the linguistic landscape of New Zealand through a corpus collected in the city of Rotorua where the Māori presence on the city signs is quite considerable. John Macalister’s work on the English-Māori relationship and the linguistic landscape of New Zealand was the main point of comparison for the study of this corpus
Le geste comme vecteur d'apprentissage en classe de langue étrangère : vers un apprentissage incarné et multimodal de la langue
Authors:   Université Paul Valéry-Montpellier III, Gamba Kresh Tilia
Published: June 2024

Le mouvement est notre premier enseignant, l’humain apprend par le geste et ce, dès sa naissance. Pourtant, on remarque encore aujourd’hui que la majorité des apprenants en classe de langues que l’on appelle « vivantes », « apprennent » une langue étrangère, assis à leur bureau durant plusieurs heures. La langue qui est censée être utilisée pour communiquer, échanger, s’exprimer… est extraite de son contexte et de sa dimension corporelle, complètement théorisée pour être retransmise à des êtres statiques. Dans la présente contribution, nous nous intéressons au lien qu’entretiennent gestes et parole ainsi qu’au processus cognitif impliquant la corporéité nous menant vers de potentielles propositions didactiques en langues étrangères incarnées où la gestuelle aurait toute sa place et où l’apprenant deviendrait maitre de son apprentissage par l’intégration physique de la langue par un processus cognitif situé. Notre réflexion se nourrit entre autres de théories telles que les neurones miroirs (Rizzolati et Sinagaglia, 2008), la cognition incarnée (Varela, Thompson, Rosch et Alva,1993, Lakoff, 1999, 2000), la multimodalité (Coletta, 2004, 2005, Azaoui, 2014) ou l’éducation kinesthésique (Dennison,2010) issues des domaines des sciences cognitives, de la didactique des langues et de la psychologie cognitive. Nous tentons de répondre aux questions suivantes : Quelle relation entretiennent le geste et la cognition ? La prise en compte du corps et plus particulièrement de la gestualité peut-elle être utilisée à des fins pédagogiques ? Quels bénéfices d’ordre cognitif peut apporter l’intégration de la gestualité dans l’apprentissage d’une langue étrangère ?
La perspective actionnelle et l’apprentissage des langues en ligne : exemple d’une pratique
Authors:   Université Abdelmalek Essaidi Tetouan Maroc, Frissa Kenza , Nejjari Amel ,   École Nationale des Sciences Appliquées Tétouan, Khaldi Mohamed ,   Abdelmalek Essaadi University
Published: June 2024

Enseignement à distance, en présentiel, communication médiatisée, classes virtuelles, cybertâches, autant de désignations qui ont dernièrement été au cœur des préoccupations des praticiens et de la communauté des chercheurs en Sciences de l’Éducation et en Didactiques. Mais de quoi s’agit-il précisément ? Et en quoi cela concerne-t-il l’enseignement/apprentissage des langues ? Sous quelles formes est-il pertinent de faire appel à ces dispositifs basés sur l’internet ? Quels changements cela implique-t-il pour l’enseignant et quel est désormais son rôle ? Autant de questions auxquelles cet article tentera de répondre. L’accent est mis sur l’apprentissage de langues dans un dispositif d’enseignement/apprentissage en ligne et les conditions à remplir pour que ce mode d’apprentissage soit efficace.
VITICULTURE OF THE CHECHEN REPUBLIC IN SOVIET TIMES (1954-1991), SUCCESSES AND PROBLEMS
Authors:   Academy of Sciences of the Chechen Republic, Grozny, Russia, Zarmaev A.A.
Published: June 2024

The article discusses issues related to the unsuccessful introduction of viticulture in the administrative regions of the Chechen Autonomous Soviet Socialist Republic, where grapevine culture was new or non-traditional. These regions are Malgobeksky, Kurchaloevsky, Shalinsky, Grozny-Selsky districts. It has been established that the main reason for the spread of viticulture was the state’s desire to employ unemployed population and the high profitability of the industry. For this purpose, collective and state farms, which previously specialized in the cultivation of grain crops, feed production and livestock breeding, were restructured. The state allocated sufficient funds and material resources for the formation and functioning of a new sub-sector of the agro-industrial complex of the republic in these areas. However, hopes were not justified. The reasons that contributed to attempts to accelerate the introduction of grapevine culture in the “new” regions of the republic, as well as the failure of work in this direction, have been identified. An analysis of the activities of farms involved in the development of viticulture in these areas was carried out. Excesses of higher authorities have been established in planning for wine state farms the volume of new plantings of vineyards, achieving the planned yield and gross grape harvest, as well as planned targets for financial and economic indicators, and in the absence of proper consideration of soil and climatic factors and their compliance with the economic and biological characteristics of the grape culture. As a result, it was revealed that this crop was not adaptable to local conditions, which was reflected in the low survival rate of plantings, the high sparsity of plantings and their unprofitability for further exploitation. All wine farms were unprofitable. The factor of psychological incompatibility of the local population to this culture also had a certain influence. At the same time, all these undesirable phenomena intensified due to the fact that they coincided with the time of the weakening of the foundations of the state under the slogans of perestroika, the fight against alcoholism and drunkenness, and later − with the tragic events of the collapse of the USSR and their negative consequences. It is concluded that the widespread involvement of “new” regions in the development of viticulture was not a fully thought-out campaign. This led, in particular, to disastrous results: the vineyards were written off before they reached productive age. In the future, introducing grapevine culture here is not economically feasible.
Sales Forecasting for Retail Business using XGBoost Algorithm
Authors: Dankorpho Prathana
Published: June 2024

The retail industry is continuously evolving with the expansion of sales channels and the diversification of product assortments. However, current forecasting methods, relying on simplistic statistical models, frequently encounter difficulties in adjusting to the dynamic retail environment. This limitation leads to challenges in accurately predicting sales volumes and frequencies. Consequently, there is a critical need to improve the accuracy and frequency of sales predictions to enable timely decision-making for business strategies. Through a comprehensive analysis of datasets spanning from 2019 to 2023, this study illustrates the substantial advantages of integrating eXtreme Gradient Boosting (XGBoost) to gain deeper insights into sales patterns. Results demonstrate a significant enhancement in prediction accuracy, with an average reduction of 29.23% in Mean Absolute Error (MAE) and 34.54% in Root Mean Squared Error (RMSE) compared to conventional methods. Furthermore, the adoption of XGBoost facilitates the transition from monthly to daily forecasting, thereby optimizing the efficiency of the prediction process. Retailers can optimize inventory management, devise effective marketing strategies, and ultimately maximize revenue. The findings emphasize the importance of embracing innovative approaches to address the challenges of a rapidly evolving retail landscape and drive sustainable business growth.
Enhancing U.S. Corporate Compliance with Environmental Regulations through the Implementation of a Corporate Carbon Tax
Authors:   Frisco Centennial High School, 6901 Coit Rd, Frisco, TX 75035 USA  Email: rayaan.altaf.30@gmail.com, Altaf Rayaan , Dodamani Sachi ,   Frisco Centennial High School, 6901 Coit Rd, Frisco, TX 75035 USA  Email: dodamani.sachi@gmail.com
Published: June 2024

This article focuses on corporate contribution towards global carbon emissions and how to close existing policy gaps and internalize the external costs associated with carbon emissions. This article discusses the implementation of a corporate carbon tax as a calculated policy move to increase United States companies' adherence to environmental laws. Establishing monitoring systems, defining precise emission objectives, and incentivizing green technology are all steps toward improving corporate compliance and, thus, the environment. The plan emphasizes flexibility, compliance, and stakeholder participation to address any obstacles. Incentives for sustainable practices, lower emissions, innovation in clean technology, and environmental project funding are a few advantages of the proposed carbon price. Obstacles and limitations include industrial resistance, worries about competitiveness, and international cooperation requirements.
Information support for administrative and jurisdictional activities of the state border guard service of Ukraine in relation to proceedings on administrative offences
Authors: Kushnir Iryna
Published: June 2024

Objective. The article is devoted to the analysis of information support of administrative and jurisdictional activities in relation to proceedings on administrative offenses which are within the competence of the State Border Guard Service of Ukraine under the Code of Administrative Offenses. Methodology. The methodological basis of the study is formed by a set of philosophical, general scientific, sectoral and special scientific methods (dialectical, communicative, structural and functional, formal and logical, hermeneutical), which, when applied in a comprehensive manner, made it possible to achieve the purpose of the study. Results. The author reveals and characterizes the legal nature of information support for administrative and jurisdictional activities of the State Border Guard Service of Ukraine in relation to proceedings on administrative offenses through the content of certain system-forming terms. It is determined that information support of the administrative and jurisdictional activities of the State Border Guard Service of Ukraine with regard to proceedings in cases of administrative offenses should be considered as creating conditions for information support of proceedings in cases of administrative offenses as one of the areas of administrative and jurisdictional activities of the State Border Guard Service of Ukraine. The author establishes that such information support is relevant from the moment of detection of the fact of committing an administrative offense and until the execution of a decision in a case on administrative offenses. Scientific novelty. The author systematizes the understanding of information support for administrative and jurisdictional activities of the State Border Guard Service of Ukraine with regard to proceedings on administrative offenses, and identifies its characteristic features. Practical significance. The results of the study can be used in law-making and law enforcement activities in the course of proceedings on administrative offenses.
The legal nature of taking actions in the property interests of another person without his authorization
Authors: Pitsyk K.
Published: June 2024

Purpose. The purpose of the work is to analyze the legal nature, concepts, types and features of the legal regulation of actions in the property interests of another person without his authorization as a non-contractual obligation in the system of civil legal relations.
Methodology. The methodology includes a comprehensive analysis and a synthesis of available scientific and theoretical information. It is includes the formulation of relevant conclusions and recommendations. Such methods of scientific knowledge were used: terminological, functional, systemic-structural, logical-normative.
Results: In the research process, it was recognized that a person who commits actions for the benefit of another person's property without his consent is a non-contractual obligation arising on the basis of legal and/or actual actions committed by a person in conditions where there is a risk of negative property consequences and it is impossible obtain the consent of the interested party, including an obligation to reimburse that person for expenses incurred. The parties to the obligation in question are the person who performs actions for the benefit of someone else's property, the gestor, and the person for whose benefit these actions are performed, the dominus. The gestor and the dominus can be natural or legal entities. The content of the obligations to perform actions in the property interests of another person without his authorization includes the rights and obligations of the manager and the dominus.
Scientific novelty. In the process of research, it was established that although the manager acts voluntarily and his activity is not based on a contract or law, he must follow certain rules, in particular, notify the dominus about taking actions in his interests at the first opportunity. These obligations may be the subject of legal proceedings, they are limited to the property interests of the interested person and provide for the prevention, elimination or mitigation of negative property consequences.
Practical significance. The results of the research can be used in legislation and law-enforcement activities.
Features of regulating property and non-property relations between ex-spouses
Authors: Khodak Svitlana
Published: June 2024

Goal. Formation of conceptual theoretical provisions regarding the problems of legal regulation of property and personal non-property relations of spouses. Comprehensive analysis of Ukrainian legislation, court practice and doctrinal sources. Identification of gaps and contradictions in the legal regulation of property and personal non-property relations of former spouses.
Methodology. The methodological basis of the research was: general scientific methods of analysis, synthesis, logical method of research, as well as such private scientific methods as formal-legal, the method of comparative jurisprudence, the method of technical-legal analysis.
The scientific novelty of the study is that it analyzes and summarizes the problem of settling property and personal non-property relations between former spouses.
The results. As a result of the analysis of the legislation establishing the regime of marital property, existing law enforcement practice and available theoretical studies in the specified field, a number of problems of legal regulation of the relations of former spouses were revealed.
Practical significance. The article proves that in order to improve the legal protection of the rights and interests of ex-spouses, it is necessary to develop recommendations for improving the legislation, aimed at a clearer and fairer regulation of property and personal non-property relations of ex-spouses. It is necessary to increase the level of legal literacy of the population on issues of legal regulation of property and personal non-property relations of former spouses, to promote the formation of a culture of peaceful resolution of conflicts.Recommendations have been developed to improve the work of state authorities and local self-government bodies in providing assistance to ex-spouses in solving their problems. The article formulates theoretical provisions designed to contribute to the improvement of the Family Code of Ukraine and other legal acts regulating personal non-property relations and relations of spouses regarding property.
The qualifying features of minors’ corruption: a criminal law analysis
Authors: Pysmenska Oksana
Published: June 2024

Purpose. The purpose of the study is to carry out a criminal law analysis of the features that qualify corruption of minors under Part 2 of Article 156 of the Criminal Code of Ukraine and, on this basis, to determine the need for their improvement and to identify the areas for such improvement. Methodology. The methodology includes a comprehensive review and synthesis of the existing research data on the characteristics that qualify corruption of minors and the formulation of relevant conclusions and recommendations. The following methods of scientific cognition were used in the study: comparison, abstraction, induction, analysis and synthesis, and systematic. Results. Based on the criminal law analysis of the qualifying features of minors’ corruption, the article provides scholarly results that make it possible to establish the existence of a number of legislative flaws that need to be eliminated. It is proved that, on the one hand, the number of such features should be increased, and on the other hand, the content of the currently provided features that qualify corruption of minors may be changed (clarified). This will ensure a more effective, differentiated impact on the offender. Originality. On the basis of the analysis, a number of new research findings have been made that are important for improving the quality of criminal legislation in Ukraine and for the progressive development of criminal law science. Particularly, the need to change the current state of legal regulation of the features that qualify corruption of minors is substantiated. Practical significance. The conclusions and proposals formulated in the article can be used in lawmaking activities to improve the criminal legislation of Ukraine, as well as in research activities, as a basis for further academic study of the issues of liability for criminal offenses against sexual inviolability.
Legal status of the cities of Galicyna in the nineteenth century (on the example of Stanislavov)
Authors: Ilyn Liubomyr , Kaleniuk Oksana
Published: June 2024

Purpose. The purpose of our research is to specify the legal status of the cities and towns of Galicia during its stay as part of the Habsburg Empire. On the example of Stanislavov of the 19th century. show vectors of development of local self-government. Method. The methodology includes the complex use of a problem-chronological approach, the principles of historicism, objectivity, as well as general scientific, special legal and special historical methods. Results. It has been established that Magdeburg law is the basis of city self-government, but the Habsburg Empire is an example of effective reform and adaptation of legal norms to local needs. Stanislavov, who received Magdeburg law in 1662 and the processes that contributed to the transformation of legal norms that regulated the legal status of city authorities in the 19th century. is an ideal example for studying the system of local self-government. Moreover, such changes led to the socio-economic growth of the city, changes in the social structure of the population, and the introduction of new principles of self-government based on the norms of administrative law. The dynamics of the city's development proves that the time of functioning of the voivodeship and city government, which arose as a result of Magdeburg law, and the time of the existence of the burgomaster institute, which arose as a result of the administrative reform of 1866-1867, are significantly different. The main regulatory acts that regulated the activities of local self-government bodies and, in particular, the city administration in the second half of the 19th century. were the law «On Local Self-Government» (1862) and the «Regional Public Law» (1866). It has been established that it took almost a hundred years for the Austro-Hungarian authorities to change Magdeburg law to their own administrative law, which regulated the powers of local authorities. Scientific novelty. Based on the analysis of the legal norms of the Habsburg Empire, the scope of local self-government in Galicia is demonstrated using the example of Stanislavov. Practical significance. The results of the research can be used in further historical and legal studies, preparation of special courses.
Brexucabtagene autoleucel in relapsed or refractory mantle cell lymphoma, intention-to-treat use in the DESCAR-T registry
Authors: Herbaux Charles , Bret Caroline , Bachy Emmanuel , Bories Pierre , Di Blasi Roberta , Cuffel Alexis , Gastinne Thomas , Lamy Thierry , Roussel Mikael , Bouabdallah Krimo , Beauvais David , Cartron Guillaume , Bay Jacques-Olivier , Blaise Didier , Rubio Marie-Therese , Mohty Mohamad , Le Bras Fabien , Casasnovas Olivier , Guy Julien , Guidez Stephanie , Llorente Cristina Castilla , Hermine Olivier , La Rochelle Laurianne Drieu , Carras Sylvain , Guffroy Blandine , Caillat-Zucman Sophie , Houot Roch , Le Gouill Steven
Published: June 2024

Not available.
Ảnh hưởng của hình ảnh thương hiệu và chất lượng dịch vụ tới sự hài lòng và lòng trung thành của khách hàng tại các ngân hàng thương mại Việt Nam
Authors: Đặng Thành Cương
Published: June 2024

Sự hài lòng và trung thành trong sử dụng dịch vụ của khách hàng là mục tiêu mà bất kỳ ngân hàng thương mại nào cũng muốn hướng tới. Nghiên cứu đánh giá mối quan hệ giữa hình ảnh thương hiệu, chất lượng dịch vụ với sự hài lòng và lòng trung thành của khách hàng tại các ngân hàng thương mại Việt Nam. Trên cơ sở kết quả điều tra, khảo sát 458 khách hàng từ các ngân hàng thương mại Việt Nam, tác giả đã sử dụng mô hình cấu trúc tuyến tính cùng sự hỗ trợ của Smart PLS 4 để xem xét các mối quan hệ này. Kết quả nghiên cứu cho thấy, hình ảnh thương hiệu cải thiện thì sự hài lòng và lòng trung thành của khách hàng càng tăng và chất lượng dịch vụ là yếu tố quan trọng hàng đầu quyết định sự hài lòng và lòng trung thành của khách hàng. Đây chính là gợi ý để các ngân hàng thương mại Việt Nam có thể đưa ra những chính sách phù hợp nhằm gia tăng lòng trung thành của khách hàng.
Polynomial \(D(4)\)-quadruples over Gaussian integers
Authors:   Faculty of Science, University of Split, Ruđera Boškovića 33, 21 000 Split, Croatia, Trebješanin Marija Bliznac , Babić Sanda Bujačić ,   Faculty of Mathematics, University of Rijeka, Radmile Matejčić 2, 51 000 Rijeka, Croatia
Published: June 2024

A set \(\{a, b, c, d\}\) of four non-zero distinct polynomials in \(\mathbb{Z}[i][X]\) is said to be a Diophantine \(D(4)\)-quadruple if the product of any two of its distinct elements increased by 4 is a square of some polynomial in \(\mathbb{Z}[i][X]\). In this paper we prove that every \(D(4)\)-quadruple in \(\mathbb{Z}[i][X]\) is regular, or equivalently that the equation \[ (a+b-c-d)^2=(ab+4)(cd+4)\hspace{20ex} \] holds for every \(D(4)\)-quadruple in \(\mathbb{Z}[i][X]\).
On the boundedness of Euler-Stieltjes constants for the Rankin-Selberg \(L-\)function
Authors:   Department of Mathematical and Computer Sciences, University of Sarajevo, Zmaja od Bosne 35, 71 000 Sarajevo, Bosnia and Herzegovina, ca Medina Zuba ̌
Published: June 2024

Let \(E\) be a Galois extension of \(\mathbb{Q}\) of finite degree and let \(\pi \) and \(\pi'\) be two irreducible automorphic unitary cuspidal representations of \(GL_m(\mathbb{A}_E)\) and \(GL_{m'}(\mathbb{A}_E)\), respectively. Let \(\Lambda(s,\pi\times\widetilde{\pi}')\) be a Rankin-Selberg \(L-\)function attached to the product \(\pi\times\widetilde{\pi}'\), where \(\widetilde{\pi}'\) denotes the contragredient representation of \(\pi'\), and let its finite part (excluding Archimedean factors) be \(L(s,\pi\times\widetilde{\pi}')\).
The Euler-Stieltjes constants of the Rankin-Selberg \(L-\)function are the coefficients in the Laurent (Taylor) series expansion around \(s=1+it_0\) of the function \(L(s, \pi \times \widetilde{\pi}')\). In this paper, we derive an upper bound for these constants.
On uniform instability in mean of stochastic skew-evolution semiflows
Authors:   School of Mathematics, Physics and Optoelectronic Engineering, Hubei University of Automotive Technology, 442002 Shiyan, China, Yue Tian
Published: June 2024

In this paper we study three concepts of uniform instability in mean for stochastic skew-evolution semiflows: uniform exponential instability in mean, uniform polynomial instability in mean and uniform \(h\)-instability in mean. These concepts are natural generalizations from the deterministic case. Connections between these concepts are presented. Additionally, some expansion properties, logarithmic criteria and majorization criteria of these concepts are given, respectively.
On the validity of the Cauchy–Schwarz inequality for the bracket map
Authors:   Faculty of Mathematics, University of Rijeka, 51 000 Rijeka, Croatia, Slamić Ivana
Published: June 2024

Due to its properties, the bracket map associated with a dual integrable unitary representation of a locally compact group can be viewed as a certain operator-valued inner product; however, in the non-commutative setting, the Cauchy–Schwarz property for bracket is no longer present in its full strength. In this paper, we show that fulfillment of the property, even in weaker forms, has strong consequences on the underlying group \(G\) and the corresponding von Neumann algebra \(\mbox{VN}(G)\). In particular, we show that for unimodular group \(G\), positive elements of the \(L^1\) space over \(\mbox{VN}(G)\) which are affiliated with the commutant of \(\mbox{VN}(G)\) are precisely those for which the weaker variant of the inequality is fulfilled, and that the validity of the Cauchy–Schwarz property for the appropriate set of elements indicates the existence of a closed abelian subgroup or abelian von Neumann subalgebra of \(\mbox{VN}(G)\).
The Influence of the Carousel Feedback Learning Model on Higher Order Thinking Skills (HOTS)
Authors: Gunawan Guntur , Rohania  , Yumiarty Yuyun
Published: June 2024

Guru belum pernah menggunakan model pembelajaran yang dapat meningkatkan Higher Order Thinking Skills (HOTS) siswa dalam proses belajar mengajar. Hal ini terlihat dari kemampuan berpikir tingkat tinggi siswa yang masih tergolong rendah sehingga hasil belajar masih dibawah rata-rata, diskusi kelompok kurang merangsang kemampuan siswa dalam memberikan ide, siswa kurang percaya diri dalam mengemukakan pendapat. Penelitian ini bertujuan untuk; 1) mengetahui kemampuan awal siswa kelas eksperimen dan kelas kontrol; 2) mengetahui perbedaan nilai rata-rata kelas eksperimen dan kelas kontrol; 3) mengetahui pengaruh model pembelajaran Carousel Feedback terhadap HOTS pada pembelajaran IPA kelas V SDN 13 Rejang Lebong.Penelitian ini merupakan penelitian eksperimen, dengan desain penelitian true eksperimen, Pre-test Post-test Control Group Design. Penelitian ini dilakukan pada kelas V yang dibagi menjadi dua kelas yaitu kelas eksperimen dan kelas kontrol. Dalam penelitian ini teknik pengumpulan data berupa observasi, tes dan dokumentasi, serta teknik analisis data berupa normalitas, homogenitas dan uji Independent Sample t-test.Hasil penelitian menunjukkan bahwa; 1) Kemampuan awal siswa pada kelas eksperimen dan kelas kontrol dengan rata-rata kelas eksperimen sebesar 49,57, sedangkan untuk kelas kontrol rata-rata sebesar 50,95. dapat disimpulkan bahwa rata-rata nilai pre-test kelas eksperimen dan kelas kontrol berada dibawah rata-rata <65; 2) perbedaan yang signifikan antara rata-rata hasil post-test kelas eksperimen sebesar 86,22 sedangkan rata-rata hasil post-test kelas eksperimen sebesar 75,86. Artinya pembelajaran dengan model Carousel Feedback mempunyai hasil yang lebih baik; 3) Terdapat pengaruh penggunaan model pembelajaran Carousel Feedback pada siswa kelas V SDN 13 Rejang Lebong. Hal ini dapat diketahui dari hasil analisis Independent Sample t-Test dengan data akhir yang diperoleh yaitu nilai thitung = 5,893≥ ttabel = 1,681 dengan tingkat signifikansi α= 0,05. Dapat disimpulkan hipotesis Ha diterima dan H0 ditolak.
Eksplorasi Bakteri-bakteri Pemfermentasi dalam Beberapa Produk Tempe di Kota Padang
Authors: Nurmiati Nurmiati , Periadnadi Periadnadi , Jadespi Sherly , Apriyelita Annisa
Published: June 2024

Tempeh is one of Indonesia's traditional foods produced through the microbial fermentation process of Rhizopus. It has become a favorite among the community, typically cooked before consumption. The fermentative bacteria in tempeh are suspected to act as probiotics, potentially making tempeh a functional food. Thus far, there have been no reports on the presence of fermentative bacteria in soybean tempeh in Padang City. Therefore, this study aimed to analyze the presence of fermentative bacteria and enzymatic activities in various tempeh products in Padang City. The research focused on identifying the presence and proportion of fermentative bacteria in soybean tempeh in Padang City. The study utilized a survey method, and the data obtained were analyzed descriptively. The results indicated the total presence of bacteria in soybean tempeh samples (11.2 - 15.3 x 10^6 CFU/g), fermentative bacteria (3.30 - 6.10 x 10^6 CFU/g), acetic acid bacteria (0.90 - 1.50 x 10^5 CFU/g), proteolytic bacteria (2.10 - 3.70 x 10^6 CFU/g), cellulolytic bacteria (34.60 - 6.50 x 10^6 CFU/g), and amylolytic bacteria (2.20 - 4.90 x 10^6 CFU/g).
Environmental Change Analysis on Agricultural Land Conversion in Palembang City, South Sumatera, Indonesia
Authors: Yuliantina Nila , Mulyana Andy , Wildayana Elisa , Lionardo Andries
Published: June 2024

The existence of agricultural land is indirectly related to the environment. The existence of agricultural land in terms of environmental aspects can provide five types of benefits, namely preventing flooding, controlling water balance, preventing erosion, and reducing environmental pollution from household waste. This research aims to analyze environmental changes in the conversion of agricultural land to non-agricultural activities in Palembang City. This research uses quantitative methods, analytical quantitative research is conducted to accept or reject hypotheses that are described by significance values. The research also used qualitative methods by conducting measured interviews with 250 respondents. The research was conducted in May 2023 in three sub-districts in Palembang City, namely Kalidoni, Kertapati, and Gandus sub-districts. The environmental indicators used as a reference include water quality, air quality, soil conditions, traffic conditions, runoff water conditions, plant conditions, and animal conditions. The results showed that the condition of plant environmental quality in the Gandus and Kalidoni sub-districts is classified as poor, while the Kertapati sub-district is in the good category. While the condition of the environmental quality of animal indicators in the Kertapati and Kalidoni sub-districts is in the good enough category, but in the Gandus sub-district it is in the bad category. Dragonfly populations will be high if the habitat conditions are very suitable. This means that there are still streams or puddles that are still clean and food is available. This clean water is the place for dragonfly eggs and images for further development. So if the dragonfly population at a location is still high, it means that the water conditions at that location are still not polluted.
The energy efficiency first principle in European energy and climate policy
Authors:   , Mandel Tim Dominik
Published: June 2024

The ‘energy efficiency first’ (EE1st) principle has become a key element of the European Union’s (EU) strategy to transition to a net-zero emissions energy system. This principle advocates prioritising energy efficiency solutions, such as building retrofits, when they cost less or provide greater societal benefits than traditional energy supply infrastructure, such as power plants. Despite its inclusion in the EU Governance Regulation and the recast Energy Efficiency Directive, the implementation of the EE1st principle across Member States faces both conceptual and practical challenges. This research makes three main contributions: First, it provides a thorough investigation of the theoretical foundations of the EE1st principle through a combination of literature review and conceptual analysis, thereby integrating the principle into the broader research literature and clarifying its implications for EU policymaking. Second, it analyses the quantitative effects of the principle using energy systems modelling and cost-benefit analyses, examining the balance between energy savings in the building sector and the associated energy supply needs for electricity, heat, and hydrogen in the EU’s netzero transition. Finally, based on a literature review of economic theory and semi-structured interviews, the research provides policy guidance by categorising potential policy instruments and presenting a decision tree framework to facilitate energy planning. Altogether, this research highlights the critical role of the EE1st principle in moving the EU towards net-zero emissions by providing conceptual clarity, empirical evidence, and actionable guidance.
Exploring the Impact of $\Lambda = a \cdot e^\pi$ as a Cosmological Constant on Black Hole Solutions in General Relativity and $f(R)$ Gravity
Authors: CHEN WEN-XIANG
Published: June 2024

In this paper, we investigate the cosmological constant $\Lambda = a \cdot e^\pi$, where $a$ is an algebraic parameter, and demonstrate its role in $f(R)$ gravity as an indicator of the transcendental form. We analyze the Schwarzschild and Kerr-Newman black holes under this cosmological constant and show that they satisfy the $\mathrm{SO} \times \mathrm{R}$ symmetry. Additionally, we prove that $f(R)$ gravity with this transcendental form also adheres to $\mathrm{SO} \times \mathrm{R}$ symmetry.
Cubic Root by Hand for Real Numbers
Authors: Muhammad Taha
Published: June 2024

I started from decimal point and grouping each 3 digits left and right direction. (a+b)^3-a^3= 3a^2 b+3ab^2+b^3
Взаимопомощь у каракалпаков, оказываемая при кризисных ситуациях и стихийных бедствиях / Mutual Assistance among the Karakalpaks in Crisis Situations and Natural Disasters
Authors: Хожаниязова Г.М.
Published: June 2024

Исследование рассматривает традицию взаимопомощи у каракалпаков во время стихийных бедствий. На основе собранных полевых материалов демонстрируется важность взаимопомощи в жизни народа в период природных катаклизмов, наводнений, пожаров и засухи. Особое внимание уделено взаимовыручке и солидарности во время пандемии коронавируса. Отношения единения и сотрудничества выражались в стремлении поделиться друг с другом деньгами, продуктами, лекарствами и при проведении различных семейных мероприятий, таких как похороны, свадьбы и другие. Несмотря на строгий карантин, введенный государством, обряды жизненного цикла у каракалпаков продолжали проводиться в соответствии с принятыми нормами. Детально описывается, как в условиях карантина родственники, соседи и друзья помогали близким и мало знакомым людям, переживавшим сложные ситуации.
The study examines the tradition of mutual assistance among the Karakalpaks during natural disasters. The collected field materials demonstrate the importance of mutual assistance in the life of the Karakalpaks during periods of natural disasters, floods, fires and droughts. Special focus is placed on mutual assistance during the Covid-19 pandemic. Unity and cooperation were manifested in the willingness to share money, food, medicine and during various family events such as funerals, weddings and others. Despite the strict quarantine imposed by the state, family events among the Karakalpaks continued to be held according to conventional norms. The paper describes in detail how, during quarantine, relatives, neighbors and friends provided assistance to people undergoing difficult situations.
Influence of color steel buildings on urban land surface temperature: a case study in Urumqi, Xinjiang, China
Authors: Li Yuqing , Yang Shuwen , Luo Yawen , Zhang Zhengrong , He Pengcheng
Published: June 2024

Introduction: Highly clustered color steel buildings (CSB) have become new impervious surfaces and heat island areas in cities due to their materials, especially in the Northwest. However, the extent of the influence of CSB on land surface temperature (LST) and how they are quantitatively related to each other have not been explored.

Methods: Therefore, this paper takes Urumqi city, which is densely populated with CSB and has a unique topography, as an example. We obtained LST data and CSB data based on Landsat and Google Earth images, and quantitatively analyzed the warming effect of the CSB on the urban LST and the characteristics of regional variability.

Results and discussion: The results of the study showed that from 2005 to 2020, the scale of CSB in Urumqi City has been expanding, with high-density aggregation shifting from urban areas to the suburbs. The urban area of Urumqi city shows a “cool island effect”, with higher temperatures in CSB. The high-density distribution of CSB roughly coincides with the high temperature areas of the city. The density of CSB is highly positively correlated with LST, with the correlation coefficient reaching 0.973 in 2010. For every 0.2 increase in cluster density, the corresponding temperature can rise by 0.4°C. At the same density of aggregation, the average temperature of urban CSB is lower than that in the suburbs. The contribution index of suburban CSB to LST reaches 0.512, significantly higher than the surrounding other buildings, marked it one of the main contributors to the thermal environment in the suburbs.The research results can provide a reference and data support for the sustainable development and planning of cities.
High-resolution decadal-scale eruption age dating of young oceanic basalts at an active hydrothermal vent site
Authors: Sims Kenneth W. W. , Kant Lisa B. , Stark Gregory J. , Reagan Mark K. , Standish Jeff J. , Langmuir Charles H.
Published: June 2024

Here we report (210Pb/226Ra), (226Ra/230Th), (230Th/238U) and (234U/238U) disequilibria for eleven lavas from the ABE vent site in the Lau Basin. Most ABE lavas have (210Pb/226Ra) > 1 and (226Ra/230Th) > 3. These results indicate that most of these lavas erupted within the past 100 years. Model ages calculated assuming initial (210Pb/226Pb) = 1.8–2.0 further constrain the timing of eruption, suggesting that more than half of the lavas erupted within the past 60 years. When combined with complementary data (side-scan sonar, lava flow morphology, tectonic mapping), this high-resolution record provides fundamental time constraints for interdisciplinary studies examining oceanic crustal construction and development of the hydrothermal system in the ABE vent field. Notably the youngest samples cluster around the active vent sites indicating that the ABE vent site’s location is a direct consequence of this concentrated young volcanism. This study is the first high resolution U-series study of a seafloor vent site and demonstrates the potential of using (210Pb/226Ra) for the determination of lava ages for young submarine lavas in spreading environments with active hydrothermal venting. As such these (210Pb/226Ra) measurements hold the promise for addressing in far greater detail the connections between spreading ridge eruptive and hydrothermal activity on the decadal to century time scales.
NAD metabolism-related genes provide prognostic value and potential therapeutic insights for acute myeloid leukemia
Authors: Cao Yuncan , Shu Wenjing , Jin Peng , Li Jianfeng , Zhu Hongming , Chen Xinjie , Zhu Yongmei , Huang Xi , Cheng Wenyan , Shen Yang
Published: June 2024

Introduction

Acute myeloid leukemia (AML) is an aggressive blood cancer with high heterogeneity and poor prognosis. Although the metabolic reprogramming of nicotinamide adenine dinucleotide (NAD) has been reported to play a pivotal role in the pathogenesis of acute myeloid leukemia (AML), the prognostic value of NAD metabolism and its correlation with the immune microenvironment in AML remains unclear.

Methods

We utilized our large-scale RNA-seq data on 655 patients with AML and the NAD metabolism-related genes to establish a prognostic NAD metabolism score based on the sparse regression analysis. The signature was validated across three independent datasets including a total of 1,215 AML patients. ssGSEA and ESTIMATE algorithms were employed to dissect the tumor immune microenvironment. Ex vivo drug screening and in vitro experimental validation were performed to identify potential therapeutic approaches for the high-risk patients. In vitro knockdown and functional experiments were employed to investigate the role of SLC25A51, a mitochondrial NAD+ transporter gene implicated in the signature.

Results

An 8-gene NAD metabolism signature (NADM8) was generated and demonstrated a robust prognostic value in more than 1,800 patients with AML. High NADM8 score could efficiently discriminate AML patients with adverse clinical characteristics and genetic lesions and serve as an independent factor predicting a poor prognosis. Immune microenvironment analysis revealed significant enrichment of distinct tumor-infiltrating immune cells and activation of immune checkpoints in patients with high NADM8 scores, acting as a potential biomarker for immune response evaluation in AML. Furthermore, ex vivo drug screening and in vitro experimental validation in a panel of 9 AML cell lines demonstrated that the patients with high NADM8 scores were more sensitive to the PI3K inhibitor, GDC-0914. Finally, functional experiments also substantiated the critical pathogenic role of the SLC25A51 in AML, which could be a promising therapeutic target.

Conclusion

Our study demonstrated that NAD metabolism-related signature can facilitate risk stratification and prognosis prediction in AML and guide therapeutic decisions including both immunotherapy and targeted therapies.