bluuebunny/crossref_metadata_2025 huggingface dataset:
Sliding Lives
Authors: Zangari del Balzo Gianluigi
Published: September 2020

painting m 3.00x1.00 m mixed technique on canvas
THE ONGOING CANON DEBATE
Authors: Wenda Yowenus
Published: September 2020

Tujuan dari tinjauan artikel ini adalah untuk berpartisipasi di dalam " debat kanon "di kalangan sarjana Alkitab. Koleksi esai, perdebatan tentang kanon diedit oleh Lee Martin McDonald dan James A Sanders dan diterbitkan pada November 2002 berfungsi sebagai titik keberangkatan. Tiga puluh dua esai dalam buku ini memberikan ringkasan penelitian terbaru dan karena itu perlu menyediakan latar belakang untuk partisipasi yang berarti dalam perdebatan saat ini. " debat kanon " oleh McDonald & Sanders mungkin adalah koleksi yang paling komprehensif dari esai yang pernah diterbitkan pada kanon formasi dalam Yudaisme dan Kristen. Volume 662 halaman ini termasuk esai pada kedua Perjanjian Lama dan Perjanjian Baru serta apokripa dan pseudepigrapha. Esai menyediakan terjemahan dari sebagian besar sumber-sumber primer kuno serta ringkasan bermakna tentang debat ilmiah, selain menyediakan panduan yang berguna untuk literatur ilmiah yang luas pada subjek. Artikel ini berpendapat bahwa Anda sekalian telah menemukan kanon, Anda dapat mengalaminya di manapun, tidak hanya di dalam teks-teks kanonik.
Data Storage, Security And Techniques In Cloud Computing
Authors: R Dinesh Arpitha , R Sai Shobha
Published: September 2020

Cloud computing is the computing technology which provides resources like software, hardware, services over the internet. Cloud computing provides computation, software, data access, and storage services that do not require end- user knowledge of the physical location and configuration of the system that delivers the services. Cloud computing enables the user and organizations to store their data remotely and enjoy good quality applications on the demand without having any burden associated with local hardware resources and software managements but it possesses a new security risk towards correctness of data stored at cloud. The data storage in the cloud has been a promising issue in these days. This is due to the fact that the users are storing their valuable data and information in the cloud. The users should trust the cloud service providers to provide security for their data. Cloud storage services avoid the cost storage services avoids the cost expensive on software, personnel maintains and provides better performance less storage cost and scalability, cloud services through internet which increase their exposure to storage security vulnerabilities however security is one of the major drawbacks that preventing large organizations to enter into cloud computing environment. This work surveyed on several storage techniques and this advantage and its drawbacks.
Novel air sterilization process for clean air production and microbial spread limitation using protection devices
Authors: Assaf Jean Claude , Louka Nicolas
Published: September 2020

The aim of this work is to develop and simulate a novel process based on sterilizing natural air by heating at high temperatures followed by a rapid cooling. The new sustainable process is called “Air Rapid Heating Rapid Cooling Sterilization” (ARHRCS). Thus, it can be used in Heating, Ventilation, and Air Conditioning (HVAC) system in hospitals to produce safe air, free of pathogenic airborne microbes including bacteria and viruses such as tuberculosis (TB) and coronavirus (SARS-CoV-2). A crown fixed on the head of the medical staff may be connected to the HVAC system to produce a constant flow of clean laminar air. Hence, this crown is capable of keeping airborne microorganisms at a safe distance from Health Care Workers (HCWs), avoiding any potential microbial infection. Accordingly, HCWs will be able to work in a more suitable and safe conditions, especially in high infection risk areas. Depending on its need, the newly developed process may be implemented in different other locations such as laboratories, malls, buildings and other crowded spaces. Further applications of this method may arise including its usage in the sterilization of recirculated air in biosafety cabinets and the development of a portable air sterilizing unit.
N caixas e M bolas ou M bolas pretas e N-1 bolas brancas
Authors: Lobo Matheus Pereira
Published: September 2020

Mostramos que N caixas e M bolas pretas tem o mesmo número de combinações de M bolas pretas e N–1 bolas brancas.
Initial thoughts on Greene’s the tragedy of commonsense morality
Authors: Ho Tung Manh
Published: September 2020

This essay reflects on the arguments in Joshua Greene's book, Moral Tribes.
SROI Sebagai Sarana Analisis Dampak Sosial pada Masyarakat Surabaya
Authors: Imamora Edwina Chyntia
Published: September 2020

Kota Surabaya merupakan kota terbesar kedua setelah Jakarta. Tidak dihiraukan lagi jika Surabaya menjadi sarang bagi para penduduk untuk bersaing dalam dunia pekerjaan. Hal ini membuat Kota Surabaya ramai penduduk sehingga, kawasan tempat tinggal penduduk yang semakin padat dan jalan raya semakin ramai pengendara bermotor membuat kondisi lingkungan Kota Surabaya menjadi menurun. Contohnya seperti penurunan kualitas udara, suhu, dan kebersihan. Tentunya hal ini membuat pemerintah Kota Surabaya tidak tinggal diam, maka dilaksanakanlah salah satu program SROI (Social Return on Investment) untuk mengurangi dampak masalah tersebut yakni Surabaya Green and Clean. Kota Surabaya telah melakukan program SROI melalui kompetisi Surabaya Green and Clean (SGC). Pemerintah Surabaya menggandeng perusahaan ternama seperti Nestle dan didukung oleh Jawa Pos. Program ini diselenggarakan setiap tahun. Demi meningkatkan kepedulian masyarakat terhadap lingkungan yang bersih dan hijau program ini mengajak partisipasi masyarakat untuk mengelola sampah dalam menciptakan lingkungan yang layak-huni melalui konsep sustainable development atau pembangunan berkelanjutan berwawasan lingkungan di Kota Surabaya.
The Asymmetric Mixed-Category Advantage in Visual Working Memory: An Attentional, Not Perceptual (Face-Specific) Account
Authors: Avital-Cohen Rotem , Gronau Nurit
Published: September 2020

The mixed-category advantage in visual working memory refers to improved memory for an image in a display containing two different categories relative to a display containing only one category (Cohen et al., 2014). Jiang et al. (2016) found that this advantage characterizes mainly faces and suggested that face-only displays suffer from enhanced interference due to the unique configural nature of faces. Faces, however, possess social and emotional significance that may bias attention toward them in mixed-category displays at the expense of their counterpart category. Consequently, the counterpart category may suffer from little/no advantage, or even an inversed effect. Using a change-detection task, we showed that a category that demonstrated a mixed-category disadvantage when paired with faces, demonstrated a mixed-category advantage when paired with other non-facial categories. Furthermore, manipulating the likelihood of testing a specific category (i.e., changing its task-relevance) in mixed-category trials, altered its advantaged/disadvantaged status, suggesting that the effect may be mediated by attention. Finally, to control for perceptual exposure factors, a sequential presentation experimental version was conducted. Whereas faces showed a typical mixed-category advantage, this pattern was again modulated (yielding an advantage for a non-facial category) when inserting a task-relevance manipulation. Taken together, our findings support a central resource allocation account, according to which the asymmetric mixed-category effect likely stems from an attentional bias to one of the two categories. This attentional bias is not necessarily spatial in its nature, and it presumably affects processing stages subsequent to the initial perceptual encoding phase in working memory.
Initial thoughts on Greene’s the tragedy of commonsense morality
Authors: Ho Tung Manh
Published: September 2020

In his 2013 book, “Moral Tribes: Emotion, Reason, and the Gap between Us and Them,” Joshua Greene1 contemplates two tragedies. The first is the tragedy of the commons, a well- studied problem in the game theory and psychology literature. Here, if people are truly self- interested, cooperation cannot arise, and everyone will use the commons until it is depleted. This problem is succinctly called the “Me vs. Us” problem. The second is the tragedy of the commonsense morality, which Greene named, refers to the problem of cooperation among groups, the “Us vs. Them” problem.
É possível existir um ser que tudo ou quase tudo pode?
Authors: Lobo Matheus Pereira
Published: September 2020

Investigamos as possibilidades matemático-filosóficas acerca da existência de um ser que tudo pode.
BigBlue
Authors: Zangari del Balzo Gianluigi
Published: September 2020

painting 6m x 3m oil on canvas
Penggunaan Social Return On Investment (SROI) Dalam Lingkungan Masyarakat
Authors: amien haqqan
Published: September 2020

Dalam buku New Economics Foundation Second Edition (2008), SROI dapat didefinisikansebagai sosial dan lingkungan yang menghasilkan nilai moneter yang nyata, membantuorganisasi dan investor untuk melihat gambaran yang lebih lengkap pada manfaat yangmengalir dari investasi waktu, uang, dan sumber lainnya. Cara ini sangat memungkinkan untukmelihat suatu dampak sehingga memungkinkan mereka yang berinvestasi dan memiliki saham,untuk mempertimbangkan sumber daya yang mereka gunakan. (Khairunnisa, Pribad, &Prabowo, 2019)
Cosmic Mandala
Authors: Zangari del Balzo Gianluigi
Published: September 2020

painting 4.00 m x 3.00 m mixed technique on canvas
"The Legal Basis for the Exercise of Jurisdiction by the International Criminal Court and the Preparatory Work of the Rome Statute (VI)," Journal of International Relations and Comparative Culture, Vol. 19, No. 1 (September 2020), pp. 41-52.
Authors: Kitano Yoshiaki
Published: September 2020

This paper aims to discuss the legal basis for the exercise of jurisdiction by the International Criminal Court while viewing the topic as one of the issues demonstrating the current status of general international law concerning the creation of obligations for non-party states. The table of contents included in this part 6 is as follows: Chapter 3 Examination of the Preparatory Work of the Statute (Continued) (Section 2 Analysis of the Relevant Discussions Conducted in the Preparatory Work of the Statute (Continued) (2. Discussions on the State-Consent Requirements and Legal Basis for the Proposed ICC’s Exercise of Jurisdiction (Continued) ((B) Exercise of Jurisdiction in the Cases of the Security Council’s Referral))).
Towards the Development of Antiracist and Multicultural Graduate Training Programs in Behavior Analysis
Authors: Najdowski Adel , Gharapetian Lusineh , Jewett Victorya
Published: September 2020

Racist policies and inequity are prevalent in society; this includes higher education institutions. Many behavior analytic training programs have been complicit in omitting cultural humility and antiracist ideas in their curricula and institutional practices. As societal demands for allyship and transformational change increase, programs must rise to the challenge and act as agents of change in our clinical, professional, and personal communities. The current paper offers a multitude of strategies for institutions to develop an antiracist and multicultural approach. These recommendations encompass policies that may be promoted on the following levels: (a) organizational infrastructure and leadership, (b) curriculum and pedagogy, (c) research, and (d) with faculty, students, and staff.
To pay or not to pay: Measuring risk preferences in lab and field
Authors: Branas-Garza Pablo , Estepa Lorenzo , Jorrat Diego Andrés , Olvera Victor Hugo Orozco , Ramírez Ericka Rascón
Published: September 2020

Measuring risk preferences in the field is critical for policy, however, it can be costly. For instance, the commonly used measure of Holt and Laury (2002) relies on a dozen of lottery choices and payments which makes it time-consuming and costly. We propose a short version of the Holt and Laury (2002) which produces in the lab (Spain) the same results as the long HL. Using the short HL in the field (Honduras and Nigeria), we observe that paying or not for the measurement of risk preferences produces the same findings using a faster and cheaper measure.
Investigating the Impact of Prenatal Training on Anxiety Sensitivity and Control in Stress-Prone Pregnant Women: A Case-Study
Authors: amouzande sara , Heris Mojgan Agah
Published: September 2020

Mood changes during pregnancy are very common and (DSM-V) highlights major mood, anxiety andpersonality disorders in pregnant women. The purpose of this study is to investigate the effectiveness ofprenatal training on modulating anxiety sensitivity and anxiety control perception in stress-prone pregnantwomen. A quasi-experimental study was conducted on 125 volunteers by convenience sampling methodand 40 persons were randomly selected and divided into two groups (experimental and control). Eachindividual has answered the pregnancy anxiety, anxiety control perception and anxiety sensitivityquestionnaires before and after training. During the training, experimental techniques and healthy lifestylewere taught to the experimental group during 8 sessions of 120 minutes. Experimental results indicate thatstress management training combined with healthy lifestyle techniques increased anxiety control perception(p <0.05), while decreasing perceived stress and pregnancy anxiety in stress-prone pregnant women (p<0.05). Moreover, the results show that psychological training during pregnancy, such as relaxation andhealthy lifestyle, reduces pregnancy anxiety, perceived stress and increases anxiety control perception inpregnant women prone to stress. However, the training sessions did not have a positive effect on anxietysensitivity.
Sensitivity to being betrayed and betraying others in Obsessive Compulsive Disorder
Authors: Howkins Sarah Louise , Millar Josie Frances Adeline , Salkovskis Paul M.
Published: September 2020

Abstract:Objectives Mental contamination (MC) describes subjective internal feelings of ‘dirtiness’ which are experienced in the absence of direct physical contact/contaminants. There isevidence of a link between MC in Obsessive Compulsive Disorder (OCD) and the experience of past betrayals. However, it has also been noted that “perpetrators” also experience MC. We aimed to replicate the previous finding of specificity of OCD for sensitivity to being betrayed, and to extend this by evaluating whether people with high MC OCD are also relatively more sensitive to the idea that they might betray others compared to those with low levels of MC OCD.Design A cross-sectional, between-groups design was used.Method Four groups, high MC OCD (N= 60), low MC OCD (N=61), depression (N=28) andnon-clinical controls (N=46) completed online questionnaires. Participants were recruitedthrough the National Health Service (NHS) and social media.Results Relative to all groups, the high MC OCD group had significantly higher scores both for betrayal sensitivity and sensitivity to betraying others. The depression group showed similar levels to low MC OCD in betrayal sensitivity but were significantly lower (and comparable to non-clinical controls) in sensitivity to betraying others.Conclusions Betrayal sensitivity occurs trans-diagnostically. There may be a specific linkbetween the development of OCD and the perception of betraying others, perhaps linked to the trauma of being betrayed making those so affected more likely to worry about their own responsibility for betraying others.
Why hypothesis testers should spend less time testing hypotheses
Authors: Scheel Anne M. , Tiokhin Leonid , Isager Peder Mortvedt , Lakens Daniel
Published: September 2020

For almost half a century, Paul Meehl educated psychologists about how the mindless use of null-hypothesis significance tests made research on theories in the social sciences basically uninterpretable (Meehl, 1990). In response to the replication crisis, reforms in psychology have focused on formalising procedures for testing hypotheses. These reforms were necessary and impactful. However, as an unexpected consequence, psychologists have begun to realise that they may not be ready to test hypotheses. Forcing researchers to prematurely test hypotheses before they have established a sound ‘derivation chain’ between test and theory is counterproductive. Instead, various non-confirmatory research activities should be used to obtain the inputs necessary to make hypothesis tests informative. Before testing hypotheses, researchers should spend more time forming concepts, developing valid measures, establishing the causal relationships between concepts and their functional form, and identifying boundary conditions and auxiliary assumptions. Providing these inputs should be recognised and incentivised as a crucial goal in and of itself. In this article, we discuss how shifting the focus to non-confirmatory research can tie together many loose ends of psychology’s reform movement and help us lay the foundation to develop strong, testable theories, as Paul Meehl urged us to.
Predictors of wellbeing during the COVID-19 pandemic: Key roles for gratitude and tragic optimism in a UK-based cohort.
Authors: mead jessica , Fisher Zoe , Tree Jeremy , Wong Paul , Kemp Andrew Haddon
Published: September 2020

Here we examine the impact of the COVID-19 pandemic lockdown on wellbeing among UK-based respondents (N = 133). We explore the extent to which variables across wellbeing domains (physical activity, gratitude, tragic optimism, social support, and nature connection) contribute to wellbeing according to our previously proposed GENIAL model. Wellbeing was significantly reduced compared to both retrospective pre-lockdown measures (d=0.55) and a Scottish sample from 2018 (d=0.39). The regression model, containing wellbeing-related variables along with age, sex, and subjective socioeconomic status, accounted for up to 50% of the variance in wellbeing. While all predictor variables were significantly associated with wellbeing in zero-order correlations, only gratitude and tragic optimism contributed significantly to the regression model. These findings provide the first evidence for the contribution of these positive psychological factors to wellbeing during the COVID-19 lockdown. Implications for wellbeing at a time of great suffering and existential positive psychology (PP2.0) are discussed.
Cultural Diversity in Unequal Societies Sustained Through Cross-Cultural Competence and Identity Valuation
Authors: Bunce John A
Published: September 2020

This article has now been published open-access as: Bunce, JA (2021) Cultural diversity in unequal societies sustained through cross-cultural competence and identity valuation. Humanities and Social Sciences Communications 8: 238. It is available here: https://www.nature.com/articles/s41599-021-00916-5
Marketplace of indicators: Inconsistencies between country trends of measures of the rule of law
Authors: Kolczynska Marta , Bürkner Paul - Christian
Published: September 2020

Social scientists can choose from among multiple quality of governance indicators which use different conceptualizations of governance and its components, rely on different data sources, and employ different aggregation and scaling techniques. Despite all differences, these indicators are commonly found to be strongly correlated, which makes the choice of indicator for a given analysis seem inconsequential. We focus on rule of law indicators to demonstrate that correlations among them are indeed high when comparing across countries or using pooled country-year data sets, but are surprisingly low -- sometimes even negative -- within countries. Given the increased interest of researchers in longitudinal analyses with country time series, low agreement between country time trends in the rule of law is concerning. We illustrate the problem with an analysis of the effect of rule of law on popular support for democracy, which leads to opposite conclusions depending on which measure of rule of law is used.
STUDI PERBANDINGAN MOTIVASI DAN HASIL BELAJAR PAI MENGGUNAKAN STRATEGI PEMBELAJARAN INDEX CARD MATCH DAN CARD SORT PADA SISWA SD KABUPATEN BOMBANA
Authors: Asni Asni , Syukri Suhartini , Wahyuni Imelda
Published: September 2020

Kurangnya motivasi dan hasil belajar pelajaran Pendidikan Agama Islam (PAI) pada daerah terpencil menjadi masalah yang krusial pada sekolah dasar wilayah terpencil di daerah Bombana, Sulawesi Tenggara. Penelitian ini bertujuan untuk menganalisis motivasi dan hasil belajar PAI siswa di daerah tersebut melalui strategi Index Card Match, Card Sort  dan perbedaan keduanya.  Penelitian ini merupakan penelitian kuantitaif dengan metode eksperimen yang dilaksanakan di SDN 74 Terapung Kabupaten Bombana. Populasi penelitian adalah kelas V dengan sampel yang  ditetapkan menggunakan teknik purposive sampling, yaitu memilih 40 siswa yang terdistribusi pada dua kelas masing-masing kelas VA sebagai kelas eksperimen pertama dan kelas VB sebagai kelas eksperimen kedua. Instrumen penelitian ini adalah tes kognitif hasil belajar dan angket, dengan tekhnik analisis data berupa t-test pada taraf signifikansi 5%. Hasil penelitian menunjukkan bahwa motivasi belajar PAI peserta didik menggunakan strategi Index Card Match dan Card Sort masing-masing berada pada kategori tinggi, serta terdapat perbedaan yaitu hasil motivasi dan belajar siswa dengan penggunaan strategi index card match lebih baik dibandingkan strategi Card Sort. Penelitian ini diharapkan menjadi refernsi baru bagi pelaksaan proses belajar mengajar pada tingkat SD khususnya di daerah terpencil serta tidak terlalu membutuhkan tekhnologi canggih melainkan bahan sederhana berupa kartu belajar yang bersumber pada basis kemauan, variasi serta kreativitas guru.
THE CRITICAL ANALYSIS OF MORAL EDUCATION IN THE PERSPECTIVE OF AL-GHAZALI, KOHLBERG AND THOMAS LICHONA
Authors: Prasetiya Benny
Published: September 2020

This study aims to describe Moral Education in the Perspective of Al-Ghazali, Kohlberg and Thomas Lichona. The thoughts of these figures have different perspectives on concepts, theories, methodologies and applications that are relevant to character development and character education in accordance with the context of Indonesian education. This type of research is library research. Data collection techniques using the method of analysis along with data analysis of content. Moral Education In the Perspective of Al-Ghazali, Kohlberg and Thomas Lichona have a different approach. Moral education built by al-Ghazali is through the approach of the story method (saga), and exemplary (uswah al hasanah). Kholberg further described the moral stages of children in accordance with the level of cognitive development. Thomas Lickona analyzed three important components in building character education, namely moral knowing, moral feeling and moral action.
PENDIDIKAN ISLAM KONTEMPORER PERSPEKTIF HASAN LANGGULUNG DAN ZAKIAH DARAJAT
Authors: Muvid Muhamad Basyrul , Miftahuuddin Miftahuuddin , Abdullah Moh.
Published: September 2020

Artikel ini bertujuan untuk menganalisis pemikiran pendidikan Islam kontemporer Hasan Langgulung dan Zakiah Darajat yang kemudian dicari titik temu antar keduanya. Pendidikan Islam harus senantiasa update dan berbenah di tengah arus global yang begitu cepat, agar bisa selalu eksis dalam menjawab berbagai tantangan dan kebutuhan global. Metode yang digunakan dalam artikel ini adalah studi kepustakaan yang data-datanya diperoleh melalui buku, jurnal, artikel, penelitian dan dokumen-dokumen yang sesuai dengan tema ini. Hasil: Pemikiran Hasan Langgulung tentang pendidikan Islam kontemporer ialah bahwa belajar sebagai proses untuk mengembangkan berbagai kompetensi peserta didik, mensinergikan berbagai ilmu, kesehatan mental juga aspek yang penting untuk dikembangkan dalam pendidikan Islam selain aspek spiritual, pengetahuan dan sosial. Sedangkan Dzakiah Darajat mempunyai pandangan bahwa pendidikan Islam harus mencetak manusia yang sesuai fitrahnya yakni sebagai Abdullah dan Khalifah Allah, mensinergikan aspek intelektual dan spiritual serta moral, psikoogi sufistik sebagai aspek yang perlu dikembangkan didalam pendidikan Islam. Titik temu antar keduanya ialah bahwa psikologi menjadi sebuah ilmu yang turut membantu pendidik dalam menghadapi berbagai ragam kepribadian peserta didik, dengan memahami ilmu psikologi maka pendidik akan lebih mudah dalam memberlakukan peserta didik. Sehingga psikologi tidak bisa dipisahkan dengan dunia pendidikan Islam.
EKSPLOITASI ANAK DI KOTA LAYAK ANAK (Studi di Kota Kendari)
Authors: Machmud Hadi , Alim Nur , Rasmi Rasmi
Published: September 2020

Artikel ini bertujuan untuk mengurai ketimpangan sosial dan tuntutan kebutuhan ekonomi yang  terjadi di kota Kendari sehingga memicu munculnya eksploitasi pada anak. Permasalahan penelitian adalah; (1) Bagaimanakah bentuk eksploitasi dan dampak sosial, ekonomi, kesehatan, psikologi dan pendidikan, pada anak di Kota Kendari, (2) Bagaimana upaya pemerintah mencegah eksploitasi anak di kota Kendari. Penelitian menggunakan metode kualitatif studi kasus, mengumpulkan data dengan menggunakan teknik observasi, wawancara, dokumentasi. Hasil penelitian; (a) Terjadinya eksploitasi anak dipengaruhi oleh ekonomi keluarga, kemiskinan, komunitas, pengaruh lingkungan, keretakan, kekerasan kehidupan rumah tangga, perceraian orang tua, (b) Bentuk eksploitasi anak dilakukan oleh orang tua dan preman berupa pekerja anak; menjadi pemulung, tukang pikul, penjual tisu, peminta/pengemis di lampu merah, penjajah makan ringan, menjadi buruh, (c) Dampak terjadinya eksploitasi anak meliputi; ekonomi, sosial, kesehatan, psikologis,  pendidikan, kehidupan bermasyarakat, anak putus sekolah, kenakalan, berkelahi, perilaku menyimpang secara social, merokok, miras, menjudi, hidup bersama beberapa orang dengan laki-laki dan perempuan dalam satu kamar kosan, hidup tidak terawat. (d) Program pemerintah Kota Kendari mencegah, mengeliminir eksploitasi anak; mengoptimalkan implementasi program pemerintah Kementerian Pemberdayaan Perempuan dan Perlindungan anak, Nota Kesepahaman Bersama (MOU) antara Pemerintah Pusat dengan Pemerintah Kota Kendari, mengukuhkan Asosiasi Pengusaha  Sahabat Anak Indonesia (APSAI) Kendari, pelibatan OPD, Psikolog, BUMN, LSM dan masyarakat.
Mechanical and dielectric behavior of LDPE/Bi-1212 films
Authors: Özdemir Zeynep Güven , Alkan Ü. , Kılıç M. , Karabul Y.
Published: September 2020

The present study deals with the improvement of the mechanical and dielectric properties of low-density polyethylene (LDPE) by incorporating BiSr2CaCu2O6.5(coded as Bi-1212) ceramic powder. In this context, LDPE/Bi-1212 films with different ceramic weight contents were prepared by hot press technique. The ceramic reinforcing material was produced by a solid-state reaction technique. While the surface morphologies of the films were determined using a scanning electron microscope (SEM), the chemical structure analyses of the samples were performed by Fourier transform infrared (FTIR) spectroscopy. The mechanical performances of the specimens were evaluated by determining the tensile strength, Young’s modulus, percentage strain at break, and energy at the break values obtained by stress-strain curves. The real and imaginary components of the complex permittivity, as well as the alternating current (ac) conductivities of the samples, were measured within in the frequency interval of 1 Hz-1 MHz between 293 K and 353 K. As a result of tensile properties analyses as well as the investigations of ac electrical parameters, it was revealed that the LDPE/1.0 wt.-% Bi-1212 composite has a promising potential in electronic applications due to its improved mechanical durability, charge storage ability and conductivity.
Capability of martensitic low transformation temperature welding consumables for increasing the fatigue strength of high strength steel joints
Authors: Hensel Jonas , Kromm Arne , Nitschke-Pagel Thomas , Dixneit Jonny , Dilger Klaus
Published: September 2020

The use of low transformation temperature (LTT) filler materials represents a smart approach for increasing the fatigue strength of welded high strength steel structures apart from the usual procedures of post weld treatment. The main mechanism is based on the effect of the low start temperature of martensite formation on the stress already present during welding. Thus, compressive residual stress formed due to constrained volume expansion in connection with phase transformation become highly effective. Furthermore, the weld metal has a high hardness that can delay the formation of fatigue cracks but also leads to low toughness. Fundamental investigations on the weldability of an LTT filler material are presented in this work, including the characterization of the weld microstructure, its hardness, phase transformation temperature and mechanical properties. Special attention was applied to avoid imperfections in order to ensure a high weld quality for subsequent fatigue testing. Fatigue tests were conducted on the welded joints of the base materials S355J2 and S960QL using conventional filler materials as a comparison to the LTT filler. Butt joints were used with a variation in the weld type (DY-weld and V-weld). In addition, a component-like specimen (longitudinal stiffener) was investigated where the LTT filler material was applied as an additional layer. The joints were characterized with respect to residual stress, its stability during cyclic loading and microstructure. The results show that the application of LTT consumables leads to a significant increase in fatigue strength when basic design guidelines are followed. This enables a benefit from the lightweight design potential of high-strength steel grades.
Hydroforming analysis of exhaust pipe connectors
Authors: Eruslu S. Ozmen , Marangoz R. , Dalmış I. S.
Published: September 2020

In this work, a hydroforming analysis of an exhaust pipe clamp adaptor made of galvalume steel was performed. Deformation and failure of galvalume exhaust pipe connectors and its coatings via the hydroforming process were studied. An explicit type (LsDyna) numerical analysis approach was adapted for the development of the hydroforming process. Pressure rate, unconstraint length, residual stress, strain hardening, and spring-back effects were considered in the analysis. The failure of tubular parts was evaluated via a forming limit diagram (FLD) according to Hill- Swift criteria. The hydroforming process was developed according to three models, which are found in the safety forming region of FLD studies. Minimum thickness values obtained from the experiments were compared with finite element analysis (FEM). The maximum percentage thinning ratio in the tubular section was more than 18 - % at 65 MPa internal pressure. The relationship between thickness reduction at plastically work hardening regions and residual stress was discussed. The deformation characteristics of the produced connector headers were also analyzed by scanning electron microscopy (SEM) and micro Vickers hardening measurements. The FEM analysis and FLD examination indicated that the failure did not occur in hydroformed specimens, whereas damage was observed at coated’ plastic work regions through microscopical investigation.
TiC coatings on an alloyed steel produced by thermal diffusion
Authors: Kilic Musa
Published: September 2020

In this study, an alloyed steel surface was coated by thermal diffusion with titanium carbide powder at different temperatures (900, 1000 and 1100 °C) and times (1, 2 and 3 h) to determine their effect on the coating microstructure. The thermal coating was carried out by tube cementation designed and manufactured by us for the purpose of thermal coating. Coating thickness, element distribution and phase composition were analyzed by optical microscope, scanning electron microscopy, energy dispersive spectrometry, X-ray diffraction (XRD) methods, respectively. Microhardness tests were performed to determine mechanical properties. The influence of different temperatures and production times on the coating thickness and microstructure were determined. The results illustrated that titanium carbide particles adhere almost completely and are diffused to the substrate during production. Thus, coating thickness increased through increasing time and temperatures. Moreover, microhardness increased with increasing temperature more than time did. The highest microhardness value achieved was 1301 HV for 3 hours. Temperatures of 1000 °C were reached due to the diffusion of TiC to the surface of the substrate, thus forming an extremely hard and protective layer.
Effect of heat treatment on corrosion and ultrasonic cavitation erosion resistance of AlSi10MnMg alloy
Authors: Uţu Ion Dragoş , Mitelea I. , Bordeașu I. , Franţ F.
Published: September 2020

The investigated alloy is modified by casting with Sr in order to finish the eutectic silicon from microstructure and furthermore subjected to solution treatment followed by natural or artificial aging to improve the usage properties. Metallographic investigations and X-ray diffraction analyses showed that the heat treated microstructure consists of α- solid solution crystals with aluminum base, α + Si eutectic and intermetallic Al-Mn-Si phases. Mechanical tests and ultrasonic cavitation measurements showed that the highest mechanical characteristics and cavitation erosion resistance properties are obtained by applying the solution treatment followed by artificial aging. In contrast, electrochemical tests carried out in a saline concentration of 3.5 % NaCl in order to determine the corrosion rate, indicated that although there are no significant differences between the three structural states, a slight improvement was found in the corrosion behavior after applying the solution treatment followed by both natural and artificial aging. The phenomenon was demonstrated by shifting the values of corrosion currents from 2.66 μm/cm2 for the as-cast state, to 1.81 μm/cm2 and 1.52 μm/cm2, respectively, for the aged states. Finally, analysis of the cavitation eroded surface highlights the presence in the areas with α-solid solution structure of some flat-bottomed striped pinches, characteristic of fatigue fracture and of microcraters in the micro-zones where the fragile intermetallic phases were dislocated.
Effect of impact source on detection quality in impact echo testing of sleeve grouting
Authors: Yao Fei , Abulikemu Abula
Published: September 2020

The quality of grouting is important for the mechanical performance of prefabricated buildings. The impact echo method is used to study the internal condition of grouting sleeves. Mode analysis of the sleeves is carried out by finite element methods. Impact loads with durations of 12 μs, 20 μs and 40 μs were applied to the model for impact echo studies, and the echo signals were compared by FFT transformation and wavelet transform. In impact echo experiments, steel balls with different diameters were used to impact the grouting sleeve. It was found that the characteristic frequency polarization of the echo signal with a diameter of 5 mm was the most pronounced. The research shows that for smallsized inspected objects such as grouting sleeves, the object’s own vibration frequency has a major influence on the detection result.
Effect of loading rate on cohesive parameters of the adhesive Araldite 2015
Authors: Erbayrak Engin , Ozer Halil
Published: September 2020

This study addresses the effect of loading rates on cohesive parameters and microstructural composition of the Araldite 2015 adhesive. Double Cantilever Beam (DCB) samples were tested under the loading rates of 1, 5, 10, 20, 100 and 200 mm × min-1. The Park-Paulinho-Roeser model (PPR model) was used to get cohesive parameters. In modelling of the softening behavior, inverse analyses were performed using the date obtained from the PPR softening curves. It was seen that the fracture energy and cohesive parameters are decreasing with increasing the loading rate. However, there seems to be a transition region where the fracture energy nearly remains constant. Microstructural analyses were implemented in order to study the effects of the loading rates on the characteristics of the fracture surfaces. It was concluded that the loading rates greatly influence the distribution of micro-voids in the epoxy matrix. Moreover, the presence of voids in epoxy matrix improved the plastic deformation around the crack tip and increased the fracture toughness.
Influence of fiber weight ratio on the mechanical and water absorption performance of borassus/epoxy composites
Authors: Debnath Kishore , Kumar N. , Singh A.
Published: September 2020

The main objective of this experimental work was to evaluate the mechanical (tensile, flexural, impact, and microhardness) and water absorption behaviors of borassus/epoxy composites. The composites were fabricated by varying the weight percentages of borassus fruit fiber from 5 to 20 wt.-%. The surface morphology of the failed test specimens were also analyzed using FESEM. The composites reinforced with 15 wt.-% borassus fruit fiber were found to have superior mechanical properties when compared with other developed composites. The water absorption was higher for the composites having fiber weight percentage of 20.
Fatigue behavior of unbonded prestressed reactive powder concrete beams after creep
Authors: Chen Y. Frank , Xuguo L. , Long T. Z.
Published: September 2020

Failure modes of two kinds of unbonded prestressed reactive power concrete (UPRPC) beams were studied experimentally under static and fatigue loads, and compared. In the tests, deflections, crack widths, rebar strains, and beam strains were measured and analyzed. The fatigue test results show that the fatigue life of non-creeped beams is more than 2 million loading cycles and the creeped beam is damaged after 1.75 million loading cycles. The compression edge strain, mid-span deflection, and rebar strain are -814 μξ, 7.6 mm, and 484 μξ, respectively, for noncreeped UPRPC beams, and -1110 μξ, 11.2 mm, and 1169 μξ , respectively, for creeped UPRPC beams (μξ represents 1 × 10-6). These values are much smaller than the static load failure values. Considering the fatigue residual strain, fatigue elastic modulus degradation, and fatigue strength degradation, a simplified analysis method for a full fatigue process is proposed, which predicts values in good agreement with the measured results.
Optimization of flank wear and surface roughness during turning of AISI 304 stainless steel using the Taguchi method
Authors: Özbek Nursel Altan , Karadag Metin İbrahim , Özbek Onur
Published: September 2020

This paper presents the effect of cutting tool, cutting speed and feed rate on the flank wear and surface roughness of austenitic stainless steel (AISI 304) during wet turning. Turning tests were designed based on the Taguchi method (L18). An orthogonal array, the signal-to-noise ratio (S/N) and the ANOVA were used to investigate the machinability of AISI 304 stainless steel with PVD and CVD coated tungsten carbide inserts. As a result of ANOVA, it was found that the feed rate was the most effective parameter on both flank wear and surface roughness.
Anthropometric changes following aerobic and resistance training programs among HIV-seropositive female patients
Authors: KUBEYİNJE Oluwaseun , EFE-AIGBOVO Agharese
Published: September 2020

This study was designed to assess the changes in anthropometric parameters of HIV-seropositive patients following 6-week aerobic and resistance exercise training. The pretest-posttest control-group design (experimental and control groups) was adopted. 60 female HIV-seropositive patients in stage 1 and 2 of the disease registered in University of Benin Teaching Hospital participated in the study. They were randomly assigned into control (19) and experimental groups (25). The experimental group exercised for One hour, three times a week for six weeks while the control group continued with their regular medications and counseling. The baseline intensity of the exercise was 60% Heart Rate Reserve (HRR) and 60% one-repetition maximum and it was progressed by 10% every 2 weeks. Anthropometric parameters were recorded at baseline and on completion of 6 weeks for both groups. Data were analyzed with inferential statistic (Analysis of variance) to test the hypotheses. The findings of this study showed that short duration exercise training did not result in significant changes in anthropometric parameters of body mass index, percentage body fat, visceral fat and waist to hip ratio. It was therefore recommended based on the findings of this study that health professionals should recommend exercise for female HIV-infected individuals due to the health benefits.
Proprioceptive training in dance sport: effects of agility skills
Authors: LJUBOJEVİC Adriana , POPOVİC Boris , BİJELİC Snezana , JOVANOVİC Sasa
Published: September 2020

The aim of this research is to determine the effects of proprioceptive training on the improvement of agility skills in dance sport fitness conditioning. Proprioceptive training is realized throughout tasks that include the establishing and maintaining various positions on balance boards of different dimensions, working surfaces and platforms. 38 male and female competitive dancers divided into an experimental and control groups. The experimental group took part in a proprioceptive training program over a period of 12 weeks (3 x 30 minutes per week). The control group (at the same time as the experimental) had regular sport dance training. At the beginning and at the end of the experiment, agility skills were measured by means of three different agility tests: Side steps, Figure '8' with bending and Agility in the air. Statistically significant differences among the groups in the final measurement (p= .00) generally show a positive effect of the proprioceptive training program on the improvement of agility skills with the experimental group, especially in tests Figure '8' with bending and Side steps. Such findings could encourage the use of proprioceptive training model in daily dance classes due to its potential to improve dancers' agility skills. Therefore, the use of a proprioceptive training model, as an innovative approach in individual and group dance fitness conditioning is recommended.
Does grip strength predict squat strength in healthy young men?
Authors: SEMPF Felix , GLAGE Denis , THIENES Gerd
Published: September 2020

Squat repetition maximum (RM) testing is a reliable and safe method for assessing lower body strength in healthy individuals but constraints in technique, time or access to testing devices can restrict its application. Measuring grip strength may provide a simple alternative as it has been linked to lower body strength in non-athletes. However, to date no study has examined the relationship between grip strength and squat strength in an untrained population. Therefore, the purpose of this study was to investigate the predictability of squat performance by grip strength. 25 untrained healthy male adults (24.9 ± 3.4 years) were tested for maximal grip strength and squat 5RM, which was used to calculate the estimated squat 1RM. Our data revealed a significant and strong correlation between grip strength and estimated squat 1RM (r = .68, p < .001) as well as a significant regression equation in which grip strength can explain 46% of estimated squat 1RM (r² = .46, p < .001). The results suggest that grip strength may be used to predict squat performance in untrained healthy male adults, when repetition maximum testing is not feasible.
Prevalence of Bone Density Reduction and Its Related Factors in Hemophilia Patients in South Khorasan Province in 2018
Authors: Ehsanbakhsh Alireza , Azarkar Ghodsiyeh , Ziaee Masood , Taghavieh Ali
Published: September 2020

Background: The present study aimed to determine the prevalence of bone density reduction and its associated factors in hemophilia patients in South Khorasan Province in 2018. Materials and Methods: This case-control study was conducted on all patients with hemophilia type A with medical records in Hemophilia center in South Khorasan province. A number of 57 eligible subjects who met the criteria were selected based on census method. Thereafter, 60 non-hemophilic individuals who were similar to hemophilic patients in terms of age and body mass index were selected by convenience sampling method. DXA device was used to measure bone mineral density (BMD) in two locations of femoral neck and lumbar vertebrae. Data were analyzed in SPSS software (version 19), using Chi-square, Fisher’s exact test, and independent t-test. A P-value less than 0.05 was considered statistically significant. Results: The prevalence rate of bone density reduction in spine bone in hemophilia patients was measured at 31.6% and 13.3% in non-hemophilia subjects (P=0.02); moreover, this rate in hip bone was reported as 7% and 5%, respectively (P=0.65). Relative frequency of bone density reduction in the spine and hip bone was not significantly different among hemophilia patients based on age, severity of hemophilia, vitamin D, hepatitis and smoking (P>0.05). However, a significant difference was detected in terms of body mass index (P<0.05). Conclusion: Based on the obtained results, the prevalence of bone density reduction in hemophilic patients was significantly higher, as compared to that of non-hemophilia patients. This necessitates the implementation of drastic preventive measures, prompt diagnosis, timely treatment, and appropriate therapeutic measures. [GMJ.2020;9:e1711]
Health Beneficial Effects of Moomiaii in Traditional Medicine
Authors: Rahmani Barouji Solmaz , Saber Amir , Torbati Mohammadali , Fazljou Seyyed Mohammad Bagher , Yari Khosroushahi Ahmad
Published: September 2020

raditional medicine (TM) that developed over the years within various societies consists of medical experimental knowledge and practices, which apply natural methods and compounds for general wellness and healing. Moomiaii as a pale-brown to blackish-brown natural exudate is one of the natural compounds in traditional medicine that has been used over 3000 years in many countries of the world especially in India, China, Russia, Iran, Mongolia, Kazakhstan and Kirgizstan. We reviewed all English-language studies about Moomiaii that we accessed them. In traditional medicine, many beneficial activities have been attributed to Moomiaii and to its main constituents, Humic acid and Fulvic acid, which are widely used to prevent and treatment of different diseases. Some modern scientific investigations showed that Moomiaii as a safe dietary supplement can be beneficial in various health complications. Even though the beneficial effects of Moomiaii have been confirmed in traditional and modern medicine, it seems that additional in-vitro/in-vivo studies and comprehensive clinical trials are necessary to explain the whole mechanisms of action and to determine the effective doses in various diseases. We discuss and clarify the claimed health beneficial effects of Moomiaii in some wide-spread diseases regarding its anti-ulcerogenic, immunomodulatory, antidiabetic, antioxidative and anticancer properties. [GMJ.2020;9:e1743]