bluuebunny/crossref_metadata_2025_split huggingface dataset:
Uncertainty as a disambiguating factor for conditional, temporal, and habitual constructions: evidence from Spanish
Authors: Merino Hernández Laura M. 
Published: June 2022

Abstract
The present work analyzes conditional constructions in Spanish that are polysemous between different conditional and non-conditional readings and whose meaning arises pragmatically. This article shows that the feature of uncertainty can help us identify potential conditional constructions, and distinguish constructions that are disguised as conditional, but that do not behave as such. Thus, factual protases are not considered “true” conditionals as their behavior is more akin to causal clauses. I argue that including uncertainty as a determining factor of conditionality can allow us to disambiguate between causal, temporal, and habitual clauses that can also yield a conditional meaning and vice versa. I also provide four tests that can allow us to disambiguate between conditionality, temporality, and habituality.
An ℋ-tensor-based criteria for testing the positive definiteness of multivariate homogeneous forms
Authors: Bai Dongjian , Wang Feng 
Published: June 2022

Abstract
A positive definite homogeneous multivariate form plays an important role in the field of optimization, and positive definiteness of the form can be identified by a special structured tensor. In this paper, based on the equivalence between the form and the corresponding tensor, and the links of the positive definiteness of a tensor with ℋ-tensor, we propose an ℋ-tensor-based criterion for identifying the positive definiteness of multivariate homogeneous forms. Some numerical examples are provided to illustrate the efficiency and validity of our results.
Design selection for a hemispherical dimple core sandwich panel using hybrid multi-criteria decision-making methods
Authors: Faidzi Mohd Khairul , Abdullah Shahrum , Abdullah Mohamad Faizal , Azman Abdul Hadi , Singh Salvinder Singh Karam , Hui David 
Published: June 2022

AbstractThe aim of this article is to determine the relationships between the essential criteria for the performance of sandwich panels and various alternative hemispherical core designs using a hybridisation technique within the multi-criteria decision-making method. A major reduction in core density reduced the structural integrity of the metal sandwich panel and promoted a significant effect of failure such as early delamination. Therefore, an effective optimisation analysis with highly precise determination is required to reduce the overall cost. The output from the finite element analysis was segregated into the nine main criteria that contributed to the sandwich panel performance. The analytical hierarchical process was used to develop a pairwise comparison matrix table and determine the weightages for each criterion. Further analysis using the technique for order preference by similarity to ideal solution (TOPSIS) was conducted to find the optimal solution for the core design. The results showed that a hemispherical dimple core design with a diameter of 6.0 mm and a depth of 3.0 mm achieved the highest-ranked closeness coefficient (CCi = 0.930 and 0.996) at both 70 and 50% of cyclic loading conditions. It was concluded that using small dimensions in the hemispherical core design configuration tends to produce better bonding strength performance in the sandwich panel, rather than configurations of larger dimensions. Hence, this method proved to be effective in determining the optimum selection, although the criteria and alternatives are intertwined, which complicates the process.
Improving tensile strength and impact toughness of plasticized poly(lactic acid) biocomposites by incorporating nanofibrillated cellulose
Authors: Tian Jiarong , Cao Zhongqi , Qian Shaoping , Xia Yingbo , Zhang Jiaxi , Kong Yingqi , Sheng Kuichuan , Zhang Ying , Wan Yi , Takahashi Jun 
Published: June 2022

Abstract
Poly(lactic acid) (PLA) biocomposites are usually plasticized to overcome the problem of poor ductility, which decreases the valuable tensile strength. In this study, novel nanofibrillated cellulose (NFC) was extracted to enhance the acetyl tributyl citrate (ATBC) plasticized PLA biocomposites. Interestingly, NFC not only exhibited an excellent strengthening effect but also showed a further toughening effect in the biocomposites. When 4 wt% NFC was added, the tensile strength, elongation at break, and impact strength of the biocomposites with 15 wt% ATBC and 20 wt% ATBC reached 52.6 MPa, 28.4%, 34.9 J/m and 35.8 MPa, 300.1%, 40 J/m, respectively. This is at least 1.1 folds higher in strength and 2.3 folds higher in impact toughness than the biocomposites without NFC. Glass transition and melting temperature slightly increased with NFC addition. More importantly, the mechanism of the strengthening and toughening effect was definitely elucidated, and the comprehensive performance of the application was evaluated. The findings of the study provide significant guidance for PLA application, such as in food packaging, medical engineering materials, and household products.
Green synthesis of spinel copper ferrite (CuFe2O4) nanoparticles and their toxicity
Authors: Jasim Saade Abdalkareem , Patra Indrajit , Opulencia Maria Jade Catalan , Hachem Kadda , Parra Rosario Mireya Romero , Ansari Mohammad Javed , Jalil Abduladheem Turki , Al-Gazally Moaed E. , Naderifar Mahin , Khatami Mehrdad , Akhavan-Sigari Reza 
Published: June 2022

Abstract
In this study, magnetic spinel copper ferrite (CuFe2O4) nanostructures were eco-friendly synthesized using Nasturtium officinale extract. Physicochemical properties of these nanostructures were determined by transmission electron microscopy, field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), vibrating sample magnetometry, and energy dispersive X-ray mapping analysis. XRD patterns conform to the CuFe2O4 formation. SEM results demonstrated ceramic spinel CuFe2O4 nanostructures with spherical surface morphologies. The cytotoxicity effect of CuFe2O4 nanostructures against rat pheochromocytoma (PC12) cells was evaluated based on MTT assay. The magnetic nanostructures had low toxicity at a concentration of 250 µg/mL. It appears that these nanostructures can be considered as suitable candidates for drug delivery and other biomedical applications, because of their low toxicity effects.
Doubly modified MWCNTs embedded in polyethersulfone (PES) ultrafiltration membrane and its anti-fouling performance
Authors: Zhang Yadi , Wang Chengcong , Zhang Lijuan , Shi Jianghuan , Yuan Haikuan , Lu Jie 
Published: June 2022

Abstract
Multiwall carbon nanotubes (MWCNTs) are often used to modify polymer membranes as additives, however, MWCNTs are easy to agglomerate and entangle in polymer matrix due to their own strong van der Waals force. MWCNTs were doubly modified by bonding octadecylamine (ODA) and SiO2 through the respective amidation and esterification reactions to prepare SiO2-MWCNT-ODA nanocomposites. The amino groups on ODA were amidated with the carboxyl groups on MWCNT-COOH. Then the hydroxyl groups on SiO2 were bonded to MWCNT-COOH through esterification to obtain SiO2-MWCNT-ODA nanocomposites. PES/SiO2-MWCNT-ODA composite ultrafiltration (UF) membrane was prepared by non-solvent induced phase separation (NIPS) method. SiO2-MWCNT-ODA nanocomposites and PES/SiO2-MWCNT-ODA membrane were characterized by FTIR, XRD, TGA, and SEM, etc. The results showed that PES/SiO2-MWCNT-ODA membrane had significantly improved permeability, rejection, and antifouling properties for comparison with PES membrane. The pure water flux of PES/Nano.2-0.5 reached 212.5 L m−2 h−1, which was approximately 2.6 times than that of PES membrane, and the rejection of BSA protein for composite membrane was as high as 94.2%. PES/SiO2-MWCNT-ODA composite membrane had excellent antifouling performance and the flux recovery rate (FRR) of PES/Nano.2-0.5 membrane could still maintain at higher value of 84.82% after two cycles in the antifouling test.
Self-referencing authorships behind the ICNIRP 2020 radiation protection guidelines
Authors: Nordhagen Else K. , Flydal Einar 
Published: June 2022

Abstract
In March 2020, ICNIRP (the International Commission for Non-Ionizing Radiation Protection) published a set of guidelines for limiting exposure to electromagnetic fields (100 kHz to 300 GHz). ICNIRP claims this publication’s view on EMF and health, a view usually termed “the thermal-only paradigm”, is consistent with current scientific understanding. We investigated the literature referenced in ICNIRP 2020 to assess if the variation in authors and research groups behind it meets the fundamental requirement of constituting a broad scientific base and thus a view consistent with current scientific understanding, a requirement that such an important set of guidelines is expected to satisfy. To assess if this requirement has been met, we investigated the span of authors and research groups of the referenced literature of the ICNIRP 2020 Guidelines and annexes. Our analysis shows that ICNIRP 2020 itself, and in practice all its referenced supporting literature stem from a network of co-authors with just 17 researchers at its core, most of them affiliated with ICNIRP and/or the IEEE, and some of them being ICNIRP 2020 authors themselves. Moreover, literature reviews presented by ICNIRP 2020 as being from independent committees, are in fact products of this same informal network of collaborating authors, all committees having ICNIRP 2020 authors as members. This shows that the ICNIRP 2020 Guidelines fail to meet fundamental scientific quality requirements and are therefore not suited as the basis on which to set RF EMF exposure limits for the protection of human health. With its thermal-only view, ICNIRP contrasts with the majority of research findings, and would therefore need a particularly solid scientific foundation. Our analysis demonstrates the contrary to be the case. Hence, the ICNIRP 2020 Guidelines cannot offer a basis for good governance.
Tail behaviours of multiple-regime threshold AR models with heavy-tailed innovations
Authors: Pan Jiazhu , He Yali 
Published: June 2022

AbstractThis paper studies the tail behaviours of the stationary distribution of multiple-regime threshold AR models with multiple heavy-tailed innovations. It is shown that the marginal tail probability has the same order as that of the innovation with the heaviest tail. Other new results in this paper include the geometric ergodicity and the tail dependence of TAR models with multiple heavy-tailed innovations.
Müşteri nezaketsizliği ile müşteri yönlü davranış arasındaki ilişki: Bankacılık sektöründe bir uygulama
Authors: BÖGE İshak , ÇOPUROĞLU Filiz , ÇAYIRAĞASI Filiz 
Published: June 2022

İlgili yazında yapılan araştırmalar, hizmet sektöründe faaliyet gösteren işletmelerin başarısında müşteri yönlü davranışın oldukça önemli olduğunu ortaya koymaktadır. Bir hizmet işletmesinde çalışan-çalışan, çalışan-yönetici ve çalışan-müşteri ilişkisi öncelikle çalışan performansına sonrasında işletme performansına etki edebilmektedir. Bu bağlamda çalışmanın amacı, algılanan müşteri nezaketsizliği ile çalışanların müşteri yönlü davranışları arasındaki ilişkiyi analiz etmektir. Çalışma kapsamında “müşteri nezaketsizliği” ve “müşteri yönlü davranış”ı ölçmek için Antalya ilinde faaliyet gösteren banka çalışanlarından kolayda örnekleme ile 382 kişiden anket çalışması ile veri toplanmıştır. Öncelikle katılımcılardan toplanan verilere faktör analizi yapılması suretiyle boyutlar elde edilmiş daha sonra da veriler, yüzde Frekans Analizi, Bağımsız örneklem T Testi, tek yönlü ANOVA ve Korelasyon Analizi gibi parametrik testlere tabi tutularak bulgular elde edilmiştir. Analiz sonuçları banka çalışanlarının maruz kaldıkları müşteri nezaketsizliği ile müşteri yönlü davranışları arasında istatistiki açından anlamlı bir ilişki olmadığı göstermiştir.
Effect of Physical Development Self-Assessment Indicators on Value Orientation Structure Formation in Senior School Age Students
Authors: Bakiko Ihor , Krutsevich Tetiana , Trachuk Sergii 
Published: June 2022

Background. Physical education as a subject in general secondary education institutions aims not only to solve health and educational problems but also to form a value attitude to health, healthy lifestyle, fostering the interest in and the need for physical activity.
Research purpose. The study aims to investigate the relationship between senior school age students’ value orientations and physical development self-assessment indicators to determine incentives to increase motivation for self-improvement by means of physical education.
Materials and methods. The research methods used to solve the tasks set in the paper were as follows: analysis and generalization of data of scientific and methodological literature; content analysis; comparison and juxtaposition method; Ye. Bochenkova’s test-questionnaire Self-description of physical development, M. Rokych’s technique for defining value orientations; methods of mathematical statistics.
Results. Based on examining correlations between the 11th grade students’ terminal values and physical development self-assessment, a tendency was found to shift the priority of youth values towards life values, values of professional realization, and values of interpersonal relationships. Based on the results of the study, we found that the formation of value orientations in boys and girls in high school can affect self-esteem, which in turn is a stimulus for self-improvement and, through an effective component of physical activity, increases the importance of “health” for senior school age boys. On the other hand, girls have no such pattern, and the value of “health” is declarative for them.
Conclusions. It has been determined that the formation of value orientations through an effective component of physical activity can affect the self-esteem of boys and girls, which in turn is an indicator of self-awareness and expresses the individual’s attitude to himself and is the basis for regulating their own behavior.
Comparison of the Effect of High Impact Aerobic Dance Exercise Versus Zumba on Increasing Maximum Oxygen Volume in Adolescent Women
Authors: Puspodari Puspodari , Setijono Hari , Wiriawan Oce , Arfanda Poppy Elisano , Raharjo Slamet , Muharram Nur Ahmad , Himawanto Wasis , Allsabah M. Akbar Husein , Koestanto Susilaturochman Hendrawan 
Published: June 2022

The study purpose was to compare high impact aerobic dance exercise versus Zumba to increase Maximum Oxygen Volume (VO2max) in adolescent women.
Materials and methods. This research is quasi-experimental with a two-group pretest-posttest design research design. A total of 30 adolescent women from the Student Activity Unit (UKM) aerobic gymnastics at Universitas Nusantara PGRI Kediri, aged 18-24 years, body mass index (BMI) 18.5-24.9 kg/m2, normal blood pressure participated in the study. Respondents were randomly divided into two groups, namely ZADE (n = 15, Zumba aerobic dance exercise) and HADE (n = 15, High impact aerobic dance exercise). HADE and ZADE were conducted for 30 minutes/session, with an intensity of ≥ 85% HRmax, as often as 3 times/week, and both types of training were performed for 8 weeks. Measurements of VO2max, oxygen saturation (SpO2), and heart rate at rest (HRrest) were pre-test and 1×24 hours post-test after 8 weeks of training intervention. Statistical analysis used Paired Sample T-Test with a significance level of 5%.
Results. Paired Sample T-Test results showed significant differences in average VO2max, SpO2, HRrest between pretest vs. posttest in both groups (p ≤ 0.001).
Conclusions. Based on the study results, we have concluded that both HADE and ZADE increase VO2max, SpO2, and decrease HRrest. But HADE is more effective in increasing VO2max, SpO2, and lowering HRrest than ZADE in adolescent women.
Practical Group Defense Exercise Design in Football Game for 13-Year-Old Students
Authors: Ihsan Nurul , Okilanda Ardo , Donie Donie , Putra Dede Dwiansyah , Wanto Sugar , Arisman Arisman 
Published: June 2022

Research purpose. Football is popular in the society across the world. Everyone always watches football matches. Nowadays, there are many football schools for kids or young athletes. Thus, there is a need for a model of exercise that is appropriate for young athletes. This study aimed to create a model of group defense exercise in a football game. It referred to 13-year-old football school students. It was designed using psychological and physiological characteristics of the 13-year-old.
Materials and methods. The study participants were 120 football players aged 12 to 13. The study used a research and development method (R&D) through Borg and Gall model. Data was obtained from observation, interview and questionnaires. Data analysis techniques used expert judgments and three steps from Miles and Huberman, namely reduction of data, display of data, and making conclusions.
Results. The findings show that the model of defense exercise in football for a 13-year-old football school player has 13 variations of the exercise. It was created based upon the psychological and physiological characteristics of a young player.
Conclusions. The result of the study is a recommendation for teachers or coaches to improve the defense exercise in football as player needs.
Intensification of Back Muscle Strength Testing in Physical Education of Students by Applying Information and Communication Technologies
Authors: Mykytyuk Zinoviy , Blavt Oksana , Hnatchuk Yaroslav , Stechkevych Oleh , Helzhynska Tetiana 
Published: June 2022

The purpose of this study is the experimental substantiation of the implementation of information and communication technologies to test the control of back muscle strength in the process of physical education of students.
Materials and methods. General scientific methods were used to solve the research problems: analysis, synthesis, generalization, induction and systematization, technical modeling, pedagogical experiment, pedagogical testing, and mathematical methods. The study involved 240 students aged 17 to 18 at the beginning of the study.
Results. An electronic device for determining the strength of the muscles of the back was developed and tested, the readings of which allow the user to get clear current information on the panel of a personal computer. The device was built on a combination of modern electronic technologies and software. For the purposes of the experimental substantiation of the developed back muscle strength control device, a correlation analysis was used to empirically investigate the authenticity degree of the tests used to control back muscle strength. According to the results of the reliability of the tests of back muscle strength control tests, the results of which were recorded using a dynamometer, those are between low and medium. The recording of the back muscle strength test results with the developed device ensured the achievement of a high level of test authenticity.
Conclusions. The result of the research study aimed at solving the problematic aspects of test control was to ensure the appropriate degree of authenticity of the tests used to control back muscle strength. The recording of the back muscle strength test results with the developed device ensured the achievement of a high level of test authenticity.
Effectiveness of Telerehabilitation on Hamstring Flexibility in Healthy Adults
Authors: Genç Hazal , Poyraz İşleyen Tuğçe , Tahmaz Tuğçe , Aydoğan Yeldağ , Atilgan Esra 
Published: June 2022

Background. Telerehabilitation used as an exercise method has become increasingly common in recent years. Various methods have been used to increase hamstring flexibility, but more research is required on the optimal program.
The study purpose was to investigate the effect of hamstring stretching exercises given as telerehabilitation and home exercise program on hamstring flexibility.
Materials and methods. Sixty-eight healthy adults were randomly assigned to two groups, namely telerehabilitation and home exercise. Exercises were performed for 8 weeks (4 sessions/week) in both groups. Active and passive range of motion (ROM), sit and reach test (SRT), and International Physical Activity Questionnaire Short Form (IPAQ-SF) were conducted in the pre- and post-intervention and after a 6-month period.
Results. At the end of 8 weeks, a significant improvement was observed in the SRT scores in both the telerehabilitation group (p = 0.001) and the home exercise group (p = 0.001). In addition, significant improvements were observed in the passive ROM measurements of both the telerehabilitation group (p = 0.005) and the home exercise group (p = 0.001). At the end of 8 weeks, the telerehabilitation group was found to be significantly superior to the home exercise group in the SRT results (p = 0.034). As for the long-term results, significant improvement was maintained in both SRT (p = 0.001) and passive ROM (p = 0.014) in the telerehabilitation group.
Conclusions. Eight-week telerehabilitation and home exercise program was observed to have positive effects on passive and active ROM. The telerehabilitation method may prove to be more effective than the home exercise method in the long term.
Profile and Differences in Anthropometric Data and Jumping Ability Performance between Elite and Amateur U16 Volleyball Players
Authors: Altavilla Gaetano , Esposito Giovanni , Ceruso Rosario , Di Domenico Felice , D'Isanto Tiziana 
Published: June 2022

Research purpose. The purpose of this study is to verify if there are significant differences between different anthropometric and jumping ability variables by testing two groups of elite and amateur volleyball players (under 16) after having submitted the two groups to the same training protocol performed 4 times a week for 4 months.
Materials and methods. The study was carried out on 24 volleyball players divided into two groups. The following anthropometric and jumping ability parameters were assessed in all subjects: height, weight, body mass index, height with a stretched arm and height with two extended arms. The jumping ability measurement was carried out with the Vertec jump test.
Results. The results of the anthropometric parameters showed significant differences between the two groups on all the variables considered: in height (p = 0.00), in weight (p = 0.00), in Vertec attack with a stretched arm, AH1 (p = 0.00) and in Vertec wall with two outstretched arms, AH2 (p = 0.01). The results of the jumping ability parameters showed significant differences between the two groups (elite and amateur): in Vertec Wall, VW (p = 0.00) and Vertec Attack with run-up, VA (p = 0.00); and a high correlation was shown for both the groups.
Conclusions. Above all, in high-level youth volleyball, the anthropometric and jumping ability profile is directly linked to the evaluation; training and continuous monitoring of physical qualities and jumping ability become an important aspect for the control of performance and the possibility of selecting talented players.