bluuebunny/crossref_metadata_2025_split huggingface dataset:
A scientometric review of the literature on the incorporation of steel fibers in ultra-high-performance concrete with research mapping knowledge
Authors: Zheng Wei , Amin Muhammad Nasir , Khan Kaffayatullah , Sufian Muhammad , Deifalla Ahmed Farouk 
Published: July 2023

Abstract
In the construction industry, the incorporation of steel fibers in ultra-high-performance concrete (UHPC) is vital for improving its mechanical characteristics. In order to identify the essential factors of UHPC, the literature on the effect of steel fibers on UHPC is reviewed using scientometric methods in this work. The review contains complex processes like knowledge mapping, co-occurrence, and co-citation. In order to analyze the bibliographic data on the impact of steel fibers on UHPC, this study makes use of contemporary methodologies for data processing, mining, analysis, presentation, and visualization. The aim is to provide direction for further research in this area by summarizing the literature. In order to achieve this goal, data from the Scopus database, including publication sources, top authors, keywords, significant publications, and nations contributing the most to the subject, are retrieved and examined. According to the scientometric analysis, the most frequently used keyword is “steel fibers,” “Construction and Building Materials” is the most popular publication source in terms of citations and articles, and China is the top-ranking nation in the industry. Academic scholars can gain from this study’s graphical and quantitative portrayal of the contributing researchers and nations by making it easier to share concepts and form collaborative initiatives. This study also shows that steel fibers can improve the mechanical properties of UHPC but their widespread manufacturing and use are dependent on factors including the fiber content and geometry.
Matrix autoregressive models: generalization and Bayesian estimation
Authors: Celani Alessandro , Pagnottoni Paolo 
Published: July 2023

Abstract
The issue of modelling observations generated in matrix form over time is key in economics, finance and many domains of application. While it is common to model vectors of observations through standard vector time series analysis, original matrix-valued data often reflect different types of structures of time series observations which can be further exploited to model interdependencies. In this paper, we propose a novel matrix autoregressive model in a bilinear form which, while leading to a substantial dimensionality reduction and enhanced interpretability: (a) allows responses and potential covariates of interest to have different dimensions; (b) provides a suitable estimation procedure for matrix autoregression with lag structure; (c) facilitates the introduction of Bayesian estimators. We propose maximum likelihood and Bayesian estimation with Independent-Normal prior formulation, and study the theoretical properties of the estimators through simulated and real examples.
Management of Christian Entertainment in Semarang
Authors: Hapsari Maria Magdalena Cita , Bahtiar Hafid Zuhdan 
Published: July 2023

Christian Entertainment is a music group from Semarang that manages its management to maintain its existence and music quality. This is evidenced by the participation of Christian Entertainment in the entertainment industry and music performances, especially in wedding events, from 1999 until now. The purpose of this research was to understand and describe the performance management of Christian Entertainment and identify the factors that hinder and support the management activities carried out by the group. This research is a descriptive study with a qualitative approach. Data collection techniques employed in this study included observation, interviews, and documentation. Data validity was ensured through triangulation. Christian Entertainment, in terms of management functions, involve planning, organizing, directing, and controlling. The elements of Christian Entertainment's management include man, material, method, machine, market, and money. The management principles applied by Christian Entertainment are division of labor, delegation of rights and responsibilities, and unity of direction. The lack of a dedicated rehearsal space poses a challenge to the management activities conducted by Christian Entertainment Music Group.
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Trend Modeling in Responding to Pandemic Case: Bibliometric Analysis
Authors: Rosyida Azma , Utami Risqi , Arlinwibowo Janu , Fatima Gupita Nadindra , Himayati Ade Ima Afifa 
Published: July 2023

AbstractThe disease caused by the virus has caused a continuous pandemic worldwide since 2012. In order to slow down the rapid spread of the virus, many countries have taken recovery measures. This paper aims to analyze the trends of modeling pandemic cases in Scopus-indexed journals. The research method is a literature review using a bibliometric analysis approach starting from defining the keywords modeling' and ‘pandemic' in the Publish or Perish application with Google Scholar as the database. After narrowing the results by selecting the topic of modeling the pandemic problem it consisted of 200 articles in total. After that, the metadata was compiled using the Mendeley application, the VosViewer application was used to create a research trend visualization. The results obtained by bibliometric analysis show that the number of publications continues to increase. Which journals are published, which organizations and countries publish the most, how the evolution of perspective has changed since 2012, and which articles are most cited. We conclude that since the pandemic, there is a possibility of an evolution in the quality of publications.Keywords: bibliometric analysis; pandemic; mathematical model; Mendeley; Publish or Perish; Vosviewer. AbstrakPenyakit yang diakibatkan dari virus telah menyebabkan pandemi berkelanjutan di seluruh dunia sejak 2012. Untuk memperlambat penyebaran virus yang cepat, banyak negara telah mengambil langkah pemulihan. Tulisan ini bertujuan untuk menganalisis tren pemodelan kasus pandemi di jurnal terindeks Scopus. Metode penelitian adalah kajian pustaka dengan pendekatan analisis bibliometrik dimulai dari pendefinisian kata kunci ‘pemodelan’ dan 'pandemi' pada aplikasi Publish or Perish dengan database Google Scholar. Setelah dilakukan penyempitan hasil dengan pemilihan topik pemodelan masalah pandemi maka total artikel menjadi 200 artikel. Setelah itu dilakukan kompilasi metadata menggunakan aplikasi Mendeley, aplikasi VosViewer digunakan untuk membuat visualisasi trend penelitian. Hasil yang diperoleh dengan analisis bibliometrik menunjukkan bahwa jumlah publikasi terus meningkat. Jurnal mana yang diterbitkan, organisasi dan negara mana yang paling banyak menerbitkan, bagaimana evolusi perspektif telah berubah sejak 2012, dan artikel mana yang paling banyak dikutip. Kami menyimpulkan bahwa sejak pandemi, ada kemungkinan terjadi evolusi kualitas publikasi.Kata Kunci: analisis bibliometrik; pandemi; model matematika; Mendeley; Publish or Perish; Vosviewer. 2020MSC: 00A71, 92B05.
Some Characteristics of the Prime Graph of Integer Modulo Groups
Authors: Maulana Muklas , Wardhana I Gede Adhitya Wisnu , Switrayni Ni Wayan , @ Ismail Ghazali Semil 
Published: July 2023

AbstractThe notion of the prime graph of a ring R was first introduced by Bhavanari, Kuncham, and Dasari in 2010. The prime graph of a ring R, denoted by PG(R) is a graph whose vertices are all elements of the ring, where two distinct vertices x and y are adjacent if and only if xRy = 0 or yRx = 0. In this paper, we study the forms and properties of the prime graph of integer modulo group, and some examples of the number of its spanning trees. In this paper, it is found that for all n, the maximum degree of vertices of PG(Z_n) is n-1 and the minimum degree of its vertices is 1. Then, we show that for all n, PG(Z_n) is neither a Hamiltonian graph nor an Eulerian graph. We also found some examples of the number of its spanning trees.Keywords: prime graph; spanning trees; Hamiltonian graph. AbstrakKonsep mengenai graf prima dari suatu gelanggang R pertama kali diperkenalkan oleh Bhavanari, Kuncham, dan Dasari pada tahun 2010. Graf prima dari suatu gelanggang R, yang dinotasikan dengan PG(R), adalah suatu graf yang simpul-simpulnya merupakan semua elemen dari gelanggang tersebut dengan dua buah simpul x dan y yang berbeda akan bertetangga jika dan hanya jika xRy = 0 atau yRx = 0. Di dalam penelitian ini, dikaji mengenai bentuk-bentuk dan sifat-sifat dari PG(Z_n), dan beberapa contoh dari banyak pohon pembangunnya. Pada penelitian ini, ditemukan hasil bahwa untuk setiap n, derajat maksimal dari simpul-simpul di PG(Z_n) adalah n-1 dan derajat minimum dari simpul-simpulnya adalah 1. Hasil selanjutnya yaitu, untuk setiap n, PG(Z_n) bukan merupakan suatu graf Hamiltonian atau graf Eulerian. Ditemukan juga beberapa contoh dari banyaknya pohon pembangun dari PG(Z_n).Kata Kunci: graf prima; pohon pembangun; graf Hamiltonian. 2020MSC: 05E16, 05C90, 20C05
A torn generation: Dichotomies and dissonances on sustainability and technological change in in-depth interviews with university students
Authors: Köves Alexandra , Tóth Tamás , Vicsek Lilla 
Published: July 2023

AbstractIn a research study among university students regarding technological change, equality and environmental sustainability, deep-seated dichotomies were found in the students' mental images of the future. This study aims to present these dichotomies as well as propose explanations for them, adding to our understanding of what kind of behavioural barriers inhibit sustainability transformations. The results show that the interviewees truly struggle to decide if the world really is on fire regarding environmental change, if technology is capable of solving the situation, if inequality is truly a problem, and how they can relate to all this. The dichotomies that we found suggest that on the one hand, they find no comfort in the dominant techno-optimistic, eco-modernisation narratives and, on the other hand, they are not aware of any alternatives. The results underline the existence of psychological phenomena such as optimism bias or psychological distancing. In our paper, we also address whether dichotomous thinking poses a problem or whether we may have to accept that dichotomies can become the norm when contemplating the world in its increasing complexity.
Longitudinal changes of grip strength and forearm muscle thickness in young children
Authors: Abe Takashi , Ozaki Hayao , Abe Akemi , Machida Shuichi , Naito Hisashi , Loenneke Jeremy P. 
Published: July 2023

AbstractBackgroundGrip strength is a marker of future health conditions and is mainly generated by the extrinsic flexor muscles of the fingers. Therefore, whether or not there is a relationship between grip strength and forearm muscle size is vital in considering strategies for grip strength development during growth. Thus, this study aimed to examine the association between changes in grip strength and forearm muscle thickness in young children.MethodsTwo hundred eighteen young children (104 boys and 114 girls) performed maximum voluntary grip strength and ultrasound-measured muscle thickness measurements in the right hand. Two muscle thicknesses were measured as the perpendicular distance between the adipose tissue-muscle interface and muscle-bone interface of the radius (MT-radius) and ulna (MT-ulna). All participants completed the first measurement and underwent a second measurement one year after the first one.ResultsThere were significant (P < 0.001) within-subject correlations between MT-ulna and grip strength [r = 0.50 (0.40, 0.60)] and MT-radius and grip strength [r = 0.59 (0.49, 0.67)]. There was no significant between-subject correlation between MT-ulna and grip strength [r = 0.07 (−0.05, 0.20)], but there was a statistically significant (P < 0.001) between-subject relationship between MT-radius and grip strength [r = 0.27 (0.14, 0.39)].ConclusionAlthough we cannot infer causation from the present study, our findings suggest that as muscle size increases within a child, so does muscle strength. Our between-subject analysis, however, suggests that those who observed the greatest change in muscle size did not necessarily get the strongest.
Multimodal biometric recognition using fused handcrafted features
Authors: Mehraj Haider , Mir Ajaz Hussain , Ana Farkhanda 
Published: July 2023

AbstractMultimodal biometric systems have been widely implemented in a variety of real-world scenarios due to their ability to overcome limitations associated with unimodal biometric systems. This paper is focused on the combination of the face, ear and gait in a unified multimodal biometric identification system using handcrafted features. These approaches provide robust and discriminative features to solve the biometric problem. In this research, speed up robust features and histogram of oriented gradients approaches have been used to extract features from face, ear and gait. The extracted features are optimized using genetic algorithm and classified using Levenberg-Marquardt backpropagation neural network. The system performance is evaluated on constrained and unconstrained dataset conditions.
Improvement of liquefaction potential in saturated sandy soil by CKD and bentonite
Authors: Sadiq Ahmed , Albusoda Bushra , Sheer Ali Tawfek 
Published: July 2023

AbstractDue to the increase in earthquake activity in Iraq and Middle East during the last two decades, the study and understanding of probable destructive action and the best method to mitigate this effect became more important. So, many improvements and mitigation methods can be used. In this study, the use of permeation grout technique was adopted to prevent the existing soil condition in urban area by using cement kiln dust and bentonite clay. The tests were executed by using 1 g shaking table apparatus to simulate a sinusoidal motion (vibration) at specified different frequencies. The liquefaction phenomena were observed for loose saturated sand at 60 s, 25 s, and 10 s for 0.5 Hz, 0.75 Hz, and 1 Hz, respectively. After mitigation process, the soil liquefaction did not occur until 100 s, 60 s, and 30 s, for the same mentioned frequencies. Besides, the use of cement kiln dust decreases the liquefaction potential and increase the factor of safety.
Timescale lessons of Durinskia baltica (Kryptoperidiniaceae, Dinophyta) from freshwater through a molecular phylogeny
Authors: Lira Beatriz , Tavera Rosaluz , Novelo Eberto 
Published: July 2023

Background: The evolutionary pattern of dinophytes is complex and requires comprehensive taxonomic studies addressing the species' development and morphology, ecology, evolution, and genetics.
Questions: How recent was the transition of D. baltica from Mexico to freshwater based on a calibrated phylogeny tree of the Kryptoperidiniaceae?
Studied species and data description: Durinskia baltica, Kryptoperidiniaceae and the known fossil record of dinotoms (endosymbiont diatom-host dinophytes).
Study sites and dates: Xochimilco, Mexico City. 2010 to 2019.
Methods: Phylogenies were constructed with Bayesian inferences and host sequences were calibrated with a relaxed clock method.
Results: We obtained genetic sequences of the 18S rDNA sector in the host and the rbcL sector in the endosymbiont. The Nitzschia-type endosymbiont is genetically distinct from endosymbionts of other dinotomes with the same diatom type. In contrast, considering the known freshwater species of Durinskia, the genetic relationship between hosts is robust and of recent origin. The antiquity of the Mexican sequence coincides with the geological origin of the Xochimilco basin, suggesting particularities in the evolutionary history of dinotomes linked to the geographic regions they inhabit.
Conclusions: Our evolutionary scenario with a calibrated phylogeny indicates that the transition of Durinskia baltica to freshwater in the Xochimilco basin is geologically contextualized. The historical environmental change of Lake Xochimilco with respect to salinity corresponds with an initial colonization of D. baltica in a brackish environment and its subsequent adaptation to freshwater.
A review on stem cells in dentistry
Authors: Kawsankar Kedar , Deshpande Anuja , Ambulgekar Vasant 
Published: July 2023

Cells with the unique capacity of self-renewal and potency are called as stem cells.Stem cells are undifferentiated and pluripotent cells that can differentiate into specialized cells with a more specific function. Defects ofOral and maxillofacial region could be most possibly cured by therapy of stem cells. Through a search in PubMed, Google, Scopus and Medline, many original research papers were found with the keywords such as stem cells, pluripotency, oral and maxillofacial region, stem cell therapy, regeneration. So many review titles were identified, twenty-two articles were retrieved that were finally included as being relevant and of sufficient quality.This article aims at discussing the use of stem cells for the therapies and specified treatments in the oral and maxillofacial area.
UNICIDADE SINDICAL versus LIBERDADE SINDICAL: FORTALECIMENTO DA CONFEDERAÇÃO OU AFRONTA AO ESTADO DEMOCRÁTICO DE DIREITO?
Authors: Reis Kamile Rodrigues Tavares , Vieira Murilo Braz 
Published: July 2023

O atual direito coletivo do trabalho, sindical ou corporativo está contido no Direito Trabalhista, fruto de lutas sociais, mormente pela intensa pressão do regime capitalista industrializado. E tem como escopo de atuação pautas relacionadas à organização sindical, negociação coletiva, contratos coletivos, representação dos trabalhadores, bem como as greves. Destarte o antecedente histórico-social, assim como as transformações no mundo do trabalho, observou-se que o Legislador Constitucionalista de 1988, consignou-se os princípios do unitarismo e da unicidade sindical, modelo do qual contrasta com o princípio do pluralismo sindical, preconcebido pela Organização Internacional do Trabalho (OIT), pluralismo este, na concepção da OIT, através da Convenção de nº 87, tida como a melhor forma de representação dos trabalhadores. E é partir desta dicotomia aparente que se debruça este ensaio, mais especificamente, buscou-se resposta à seguinte problemática: os princípios da unicidade sindical e liberdade sindical culminam no fortalecimento das confederações ou afrontam ao princípio maior do Estado Democrático de Direito? E, para buscar reposta ao questionamento base deste estudo, adotou-se o tipo de pesquisa de natureza descritiva, bibliográfica e documental. Como conclusão à questão problema, verificou-se que há princípios colidentes, pois quando reconhece-se a unicidade sindical, veda-se o princípio fundamental da liberdade de expressão e, por correlação, o princípio maior do Estado Democrático de Direito, vez que a soberania não tem sido levada em consideração. Noutra seara, embora reconhecido os institutos da representação por federações e confederações, estes já nascem enfraquecidos, visto que com a limitação imposta pelo legislador constituinte, no art. 8, II permitindo que haja apenas um sindicato por federação, vedando a liberdade e a soberania de escolha dos trabalhadores e empregadores, na medida em que impede a manifestação do livre arbítrio e a união de forças representativas em todos os graus.
Shallot growth and yield supported by irrigation and nitrogen application in utilizing dry land area in Mesuji, Lampung Province, Indonesia
Authors: Manik Tumiar Katarina , Timotiwu Paul B. , Mua’ddin Mua’ddin 
Published: July 2023

Lampung Province, Indonesia local government intended to extend shallot cultivation in Mesuji Regency, Lampung (-3.86, 105.43). Mesuji has 21,863.5 ha dry land area, with unproductive land of 10,325.6 ha which could be potential for growing <em>shallot</em>. However, horticulture crops such as shallot often face obstacles in dry land since dry land characterized with poor soil nutrient and limited water. The objective of this research are to analyze the effects of nitrogen fertilizer and different irrigation volumes on shallot growth and production, investigate shallot suitability to Mesuji agro-climate, and estimate shallot yield potential in Mesuji. The treatments on factorial split block were: without N, 80 kg N ha<sup>-1</sup> , 160 kg N ha<sup>-1</sup>, and 240 kg N ha<sup>-1</sup> and the irrigation levels: 25, 50, 75 and 100% of ETc; ETc is crops evapotranspiration. The Mesuji agro-climate was evaluated using standardized precipitation index (SPI) and the yield was simulated by Aquacrop model. The results showed that the effort of shallots production with a high fresh weight of bulbs and biomass in the Mesuji area requested water at least 75% ETc and N fertilizer doses of 160 kg N ha<sup>-1</sup>. The SPI indicated near normal condition was more than 65%, and drought existed in a small percentage in both places (a total of 16.9% for Brebes the centre of shallot production and 19.43% for Mesuji). The AquaCrop simulation gave a good yield estimation (simulated 19.451 ton ha<sup>-1</sup> and observed 17.351 ton ha<sup>-1</sup>). There is a possibility that shallot will grow well in the Mesuji area even though the quality of the shallot should be further tested.
THE EFFECT OF FAMILY SOCIAL SUPPORT ON STUDENTS' RESILIENCE WITH SINGLE PARENTS
Authors: Anggraini Agata Christiana , Hasanah Uswatun , Oktaviani Maya 
Published: July 2023

This study aims to determine the impact of family social support on student resilience among single parents. This study is a quantitative associative study that employs a survey method. This study collects data using a social support questionnaire (29 items) and a student resilience questionnaire (51 items). The research sample consisted of 95 students chosen using the purposive sampling technique. They are students who live in East Jakarta with only one parent because of divorce or death. The research data collection period runs from April to July 2022. Test the hypothesis using the Pearson Product Moment Correlation and simple regression. Data analysis reveals that most samples have moderate resilience (37.9%), and most students receive high family social support levels (53.7%). The calculations show that family social support has a 37.7% significant effect on student resilience (p-value = 0.00 < 0.05). According to this study, the greater the student's family social support, the greater the student's resilience, even when they live with only one of their parents.

Abstrak
Penelitian ini bertujuan untuk mengetahui pengaruh dukungan sosial keluarga terhadap resiliensi mahasiswa dengan orang tua tunggal. Penelitian ini merupakan penelitian kuantitatif asosiatif dengan metode survei. Penelitian ini mengumpulkan data menggunakan angket dukungan sosial (29 item) dan angket resiliensi mahasiswa (51 item). Sampel penelitian terdiri atas 95 mahasiswa yang dipilih dengan teknik purposive sampling. Sampel penelitian merupakan mahasiswa yang tinggal di Jakarta Timur dengan hanya memiliki satu orang tua karena perceraian atau kematian. Periode pengumpulan data penelitian berlangsung dari bulan April sampai Juli 2022. Uji hipotesis menggunakan Korelasi Pearson Product Moment dan regresi sederhana. Analisis data menunjukkan bahwa sebagian besar sampel memiliki resiliensi sedang (37,9%), dan sebagian besar mahasiswa menerima tingkat dukungan sosial keluarga yang tinggi (53,7%). Hasil perhitungan menunjukkan bahwa dukungan sosial keluarga berpengaruh signifikan sebesar 37,7% terhadap resiliensi mahasiswa (p-value = 0,00 < 0,05). Menurut penelitian ini, semakin besar dukungan sosial yang diberikan oleh keluarga mahasiswa, semakin besar pula resiliensinya, bahkan ketika mereka tinggal hanya dengan salah satu orang tuanya.