bluuebunny/crossref_metadata_2025 huggingface dataset:
PENERAPAN STANDAR CARA PRODUKSI PANGAN OLAHAN YANG BAIK (CPPOB) DI CILACAP
Authors: Prasadi Oto , Nurlinda Ayu Triwuri  , Dwi Novia Prasetyanti  , Eka Dyah Puspita Sari  , Agus Santoso
Published: January 2021

Kegiatan perikanan di Kecamatan Cilacap Selatan, tepatnya di Jl. Kakap No.38 Rt/Rw 02/12 berfokus pada pengolahan hasil perikanan berupa makanan yang berbahan baku dari ikan lele higienis seperti nuged, stick, bakso, sosis, crispy dan lele bumbu siap goreng yang masuk ke dalam kriteria Makanan Dalam (MD). Dalam proses mendapatkan izin edar baik MD maupun P-IRT ada syarat-syarat yang harus dipenuhi oleh pengelola, salah satunya yaitu Cara Produksi Pangan Olahan yang Baik (CPPOB/GMP) sesuai dengan Peraturan Kepala BPOM No.HK.03.1.23.04.12.2206 Tahun 2012. Dalam GMP untuk IRTP terdapat 14 kriteria yang harus dipenuhi untuk menjamin kualitas keamanan pangan (food safety). Adapun solusi yang diberikan untuk memenuhi 14 kriteria yang sudah di tetapkan oleh BPOM dan Dinas Kesehatan yaitu 1) Memberikan assesmen atau penilaian terhadap usaha yang dilakukan dan memperbaikinya. 2) Persiapan pengajuan izin edar baik P-IRT atau MD. Sehingga penting bagi pelaku usaha pangan untuk menjaga kualitas dengan memperhatikan CPPOB
PENGEMBANGAN MEDIA LAGU RUMUS MATEMATIKA BERBASIS AUDIO PLAYER UNTUK KELAS VI SD/SEDERAJAT
Authors: Gusti Ama Gusti Azis , Indra Martha Rusmana
Published: January 2021

Penelitian ini bertujuan untuk mengetahui kelayakan penggunaan media lagu rumus matematika pada materi
volume bangun ruang untuk kelas VI SD/Sederajat. Metode yang digunakan penelitian ini adalah metode  Research and Development (Penelitian Pengembangan) dengan menggunakan prosedur pengembangan ADDIE yaitu (Analysis,  Design,  Development,  Implementation,  and  Evaluation).  Metode  pengambilan  data  menggunakan angket validasi uji pakar. Hasil analisis data dalam proses validasi media diantaranya dari ahli media yaitu 4,06 berarti “baik”, ahli materi yaitu 4,53 berarti “sangat baik” dan ahli bahasa yaitu 3,97 berarti “baik”. Dapat disimpulkan bahwa rata-rata kelayakan media lagu rumus matematika adalah layak karena rata-rata menunjukkan hasilnya adalah baik. Penelitian ini dilaksanakan di MI Nurul Ikhlas Depok dan dilakukan sampai uji pakar yaitu guru kelas dan tidak dilakukan uji lapangan kecil terhadap siswa karena pandemi Covid-19 tahun 2020
Zeichenform und Warenverkehr: Eine Formatgeschichte der Marke, 1840-1891
Authors: Brühwiler Wendelin
Published: January 2021

Wie kommunizieren Marken? Auch wenn die Konsumenten bestens mit ihnen zurechtkommen, wenn sie ihre Kaufentscheidungen treffen, und die Experten in Marketing- und Rechtsabteilungen ganz selbstverständlich mit ihnen arbeiten, bringt uns diese Frage in Verlegenheit. Brühwilers Studie untersucht die Entstehung des modernen Markenkonzepts. Sie setzt ein mit der Verunsicherung der kommerziellen Transaktionen im Rahmen expandierender Kommunikations- und Transportsysteme um 1840. In der Folge entsteht ein flexibles Bezeichnungsformat, das sich an die Medienumgebung anpasst, in Verwaltungsroutinen einspielt und im internationalen Recht verankert wird. Diese Entwicklung wird von Brühwiler am Beispiel der französischen »marques de fabrique et de commerce« untersucht und anhand von Konflikten im Handel und in der Industrie, von politischen und juristischen Kontroversen sowie der Registrierungspraxis empirisch rekonstruiert. Seit dem ausgehenden 19. Jahrhundert eigneten sich Marken nicht mehr zur Identifizierung von Waren. Stattdessen richtete sich ihre Medienlogik nach dem Erfordernis der Unterscheidung von Angeboten am Markt von Grund auf neu aus. Die kommerzielle Kommunikation wurde so vom Verweis auf spezifische Qualitäten und Herkünfte der Ware entlastet. Der Wandel von der Identifizierung zur Unterscheidung konnte jedoch nicht kurzerhand dekretiert werden. Er vollzog sich vielmehr im Zusammenspiel kleiner Verschiebungen: in den Bestimmungen des Rechts, in der Orientierung der Akteure und in der administrativen Fixierung. Die in diesem Buch entwickelte Geschichte erschließt so die Karriere moderner Verlegenheiten im Umgang mit Marken und verweist die theoretischen Verkürzungen des Gegenstands auf eine medienhistorische Dynamik.
Engagement, Technology, and Mathematics: Students’ Perceptions
Authors: Attard Catherine
Published: January 2021

Many schools are investing significant funds in technology in the hope that it will address declining engagement with mathematics and improve students’ learning outcomes. This paper presents data from two studies and explores students’ perceptions of technology use during mathematics lessons and their resulting engagement. Results from the two studies suggest some relationship between the ways in which technologies are incorporated into mathematics lessons, and teacher experience and expertise.
Changing the Attitudes and Beliefs of Pre-service Primary Teachers Towards Mathematics
Authors: Stoilescu Dorian
Published: January 2021

The importance of preparing primary educators capable of successfully teachingmathematics has been extensively emphasized in educational research. However, it is widely acknowledged that pre-service teachers in primary education start their career with poor attitudes and a great degree of anxiety towards mathematics. As such, primary education has been under severe criticism for not being able to provide their pre-service teachers with an adequate set of skills and attitudes towards mathematics. This paper discusses several cases and searches for possible explanations that are perpetuating this state. As well, this theoretical paper gives some recommendations for decreasing mathematics anxiety and improving mathematical knowledge for pre-service teachers in primary education.
The Impact of Gender, Parents’ Education Level, and Socio-Economic Status on Turkish Students’ Mathematics Performance
Authors: Rusli Rusli
Published: January 2021

This paper describes secondary data analyses that investigate the impact of gender, parents’ education level, and socio-economic status upon Turkish students’ mathematics achievement in the Program for International Student Assessment (PISA) 2009. The analyses were done quantitatively using t-tests, one-way ANOVA, correlation and linear regression. The findings revealed that gender differences and Turkish students’ mathematics performance are statistically significant but practically not significant. Parents’ education level had an impact on Turkish students’ mathematics achievements. The index of Economic, Social and Cultural Status (ESCS) had a positive effect on mathematics achievements and ESCS was a significant predictor of Turkish students’ mathematics performance. The findings seem to suggest that at the school level, the school environment is expected to build students’ motivation in learning, and the teachers in the classroom setting are expected to provide extra hours and learning consultation services for students who need it. At the student level, students were expected to have high motivation in learning and are suggested to not rely on learning facilities provided by their parents. However, further research is required prior to making any recommendations on school policy, teaching, and learning practice in the classroom setting.
Inconsistency Among Beliefs, Knowledge, and Teaching Practice in Mathematical Problem Solving: A Case Study of a Primary Teacher
Authors: Siswono Tatag Yuli Eko , Kohar Ahmad Wachidul , Kurniasari Ika , Hartono Sugi
Published: January 2021

This is a case study investigating a primary teacher’s beliefs, knowledge, and teaching practice in mathematical problem solving. Data was collected through interview of one primary teacher regarding his beliefs on the nature of mathematics, mathematics teaching, and mathematics learning as well as knowledge about content and pedagogy of problem solving. His teaching practice was also observed which focused on the way he helped his students solve several different mathematics problems in class based on Polya’s problemsolving process: understand the problem, devising a plan, carrying out the plan, and looking back. Findings of this study point out that while the teacher’s beliefs, which are closely related to his problem solving view, are consistent with his knowledge of problem solving, there is a gap between such beliefs and knowledge around his teaching practice. The gap appeared primarily around the directive teaching which corresponds to instrumental view he held in most of Polya’s process during his teaching practice, which is not consistent with beliefs and knowledge he professed during the interview. Some possible causes related to several associate factors such as immediate classroom situation and teaching practice experience are discussed to explain such inconsistency. The results of this study are encouraging, however, further studies still need to be conducted.
The Implementation of TPACK (Technology, Pedagogy, and Content Knowledge) Framework on Indonesian Online Mathematics Teachers Training
Authors: Rohmitawati Rohmitawati
Published: January 2021

This study aimed to describe how the implementation of the TPACK (Technology, Pedagogy, and Content Knowledge) framework used for online mathematics teacher training, and to observe participants’ response of the course. This research was a case study of online training for 30 Indonesian junior secondary school mathematics teachers on a quadrilateral course developed using the TPACK framework. The TPACK framework provides a map for understanding how to effectively integrate technology and instructional strategies into the content. The finding of this study for the teachers in the sample were: (1) The TPACK framework was implemented interactively in the integration process of GeoGebra (technology) using discovery learning strategies (pedagogy) on the square area formula (content) for quadrilateral properties; (2) The use of the TPACK framework on the online course received positive responses from teachers in the sample and they stated that it would be interesting and helpful when used in the classroom.
Students’ Errors and Misconceptions about Operations of Fractions in an Indonesian Primary School
Authors: Ratnasari Ratnasari
Published: January 2021

Fraction is one of the topics that is learned by students from primary, in secondary school and even college. When learning about fractions, sometimes students find difficulties that can trigger errors and misconceptions. This study was conducted to identify common students’ errors and misconceptions about operations of fractions (i.e. addition, subtraction, multiplication, and division) in an Indonesian primary school. The study used a qualitative methodology and involved 4 participants (S1, S2, S3, and S4) from 6th grade students from a classroom in a public primary school in South Jakarta. They were selected based on theirscores on a test on operations of fraction (15 problems). The four participants who were chosen, each got 2, 4, 6, and 14 answers correct. The result of this study indicated that for these four students, some errors about fractions in their primary school were errors in computing the fractions and mistyping the solutions. Some of the misconceptions of fractions were related to fraction operations.
Закулисная история элит – рецензия на книгу Роберта Гейтса «Долг. Мемуары министра войны» (2014)
Authors: Pushnina Alina S.
Published: January 2021

В данной рецензии предпринимается попытка анализа книги Роберта Гейтса «Долг. Мемуары министра войны», в которой от первого лица рассказывается о закулисных политических играх. В исследовании анализируется личное отношение автора мемуаров ко всему происходящему в Белом доме, а также его отношение к людям, которые занимали ключевые посты. Данная книга будет интересна политологам, социологам и историкам, а также людям, которые интересуются политическими процессами.
Ruqyah Syar’iyah: Upaya Mencari Kesembuhan
Authors: Hayat Mukhtamar
Published: January 2021

The treatment of ruqyah syar'iyah (hereinafter referred to as ruqyah) is one of the treatments practiced in time of Rasulullas SAW. In the last few years, such treatment has been popularly practiced in Indonesia, including in Makassar, one of the cities in Indonesia where the practice of ruqyah is mushrooming. While many literatures deal with the practice of ruqyah from spiritual point of view, the new contribution of this article lies in the practice of various types of ruqyah.
This study was conducted in the city of Makassar, the capital city of South Sulawesi where more than 80% of its population are Muslims. Using qualitative approach, this study involved 14 informants, consisting of eight patients, two peruqyah, staff of ruqyah clinic and patients’ families respectively. Data was collected using the combination of interview and observation.
This study shows that whether or not one is intended to cure his/herself depends very much on their belief in the treatment. Some started with modern medical treatment, others had full faith from the start.  Some did it on the basis of their own desire, others influenced by close relatives. Ruqyah is part of Tibbun Nabawi and in its development ruqyah itself is divided into three types, namely, mass ruqyah, clinic ruqyah, and independent ruqyah. Despite the fact that the stages of each type are relatively the same: pra-ruqyah, main ruqyah, and post-ruqyah, each has its own uniqueness. Ruqyah not only helps to heal someone, especially those who suffer from disorders of spirits, but also strives to be a medium of preaching for patients. Curative healing is the main axis in the treatment of ruqyah, but preventive measures are also introduced as a bulwark against disturbance by spirits. Even though ruqyah is an islamic treatment, non-Muslim is not prohibit to take such treatment as long as they believe and follow the rule. This indicates that the belief to such treatment breaks down religious barriers. However, healing through ruqyah treatment is not entirely dependended on peruqyah, but it is mainly depended on the patient him/herself, by improving his/her quality of life after the ruqyah treatment.
Social integration of children with and without ASD in their first school year
Authors: Pruteanu Alice Florentina
Published: January 2021

The present research presents the results of a cross-sectional study on the relationships among developmental level at the beggining of the first school year, interpersonal relationships, and social abilities at the end of the first school year, in children with and without ASD. The participants were 120 children, 60 diagnosed with ASD and 60 with typical development aged 6 to 7 years, M = 6.27, AS = .20, of which 78 boys (65%) and 42 girls (35%). The instrument used for the measurement of developmental level was Portage Psychomotor Development Scale (Bluma et al., 1976), social skills were measured with 17 items of the Social Skills Rating System (SSRS) (Gresham & Elliott, 1990), and the quality of relationships with others was measured with four items of the Sense of Relatedness Questionnaire (Furrer& Skinner, 2003). Two hierarchical regression analyses were ran, with three steps each. The results showed that child-peer relationship and also child-teacher relationship could diminish the effects of being diagnosed with ASD and also of developmental level on social skills. Practical implications were discussed. Our results support the importance of early interventions for children with ASD as a means to contribute to the developmental level of children with ASD, comparable with children without ASD.
The role of Emotion Regulation on the link between False Memory and Decision Making
Authors: Voicu Tiana , Busuioc Andrada , Chirilă Alexandra , Nedelcu Maria
Published: January 2021

Current research is based on an experimental two-stage condition. The main objective is to investigate how false memories influence the decision making process, but also the role of emotional regulation in the mentioned relationship. The experiment is based on the DRM paradigm. Participants were aged 18-50 and were divided into two experimental groups. The study investigates both everyday life decision making strategies and those involving taking risks, according to Prospect Theory. The results show that false memories influence decision making process, especially regarding risky ones, but did not support the moderating role of emotion regulation in decision making process under the condition of false memories. The implications of research highlight both the people’s suggestibility and the type of emotional state they should have in order to maintain their trust on false memories.
The role of Dark Triad of personality in the relashionship between attachment type and leadership style
Authors: Dumitrașcu Ecaterina-Bianca
Published: January 2021

Leaders can be found at any hierarchical level of the organization, representing a determinant factor in the global performance and their subordinates’ level of job satisfaction. The present study aims to investigate the relationship between the leader’s attachment type and his leadership style, but also try to understand how this relationship can be impacted by the presence of accentuated personality traits. In this regard, data was collected using a set of self-report instruments (N = 110) from a sample consisting of 72 women (65.5%) and 38 men (34.5%) which take part in NGOs, between the ages of 19 and 43 years old. Results showed that the anxious attachment type significantly and negatively predicts efficient leadership styles, as opposed to the avoidant type that doesn’t seem to share such effects. Moreover, neither of the two insecure attachment types could significantly predict the leader’s inefficacy. Regarding to the effect that accentuated personality traits may exhibit, results indicated that Machiavellianism is the only dark trait which has a moderating effect on the relationship between attachment type and leadership style, but only at a lower level of the trait and in a way that reduces the efficacy of the avoidant leader. These results are characterized by a considerable practical importance, mainly in the fields of psychologists and social workers’ activity, in organizational selection and training.
The Effectiveness of Aesthetic Teaching on the Attitude of Elementary School Students
Authors: Ahmadi Ahmad , Fathabadi Roohallah , Bakhtiarvand Morteza
Published: January 2021

The aim of this study was to investigate the effect of aesthetics based teaching on students' attitudes toward school. This is an all-experimental study of pre-test-post-test design with a control group. The statistical population of sixth grade students in schools Fardis in the academic year of 1997-98 was. The sampling method was simple random and the selected students were divided into experimental and control groups. The sample size was determined using Morgan table and the number of sample people in each group was 16. Experimental science course was taught in the experimental group by aesthetic teaching method and in the control group by traditional teaching method. To assess the attitude towards school, McCoach (2003) school attitude questionnaire (SAAS-R) was used with a reliability of 0.96. The obtained data were analyzed by multivariate analysis of covariance. The results showed that the level of attitude towards school in students who took the sixth grade experimental sciences course with aesthetic methods was different from the students who learned this course with the usual teaching methods in schools. Therefore, the aesthetic method can play a role as an active and effective method in students' academic achievement in science.
PHILOSOPHICAL BASIS ON EDUCATION PRINCIPLE OF TAMANSISWA IN THE BEGINNING OF ITS ESTABLISHMENT
Authors: Natalia Bonifasia Ekta Fima
Published: January 2021

This research aims to find the philosophical foundation of the article "Principles of Education of Tamansiswa at the Beginning of Its Establishment" in the book of "Ki Hajar Dewantara's Thought and Struggle" which is published by The National Awakening Museum of the Directorate General of Culture Ministry. This book consists of six parts, which discusses about some topics related to KHD. The researcher chose the second part to be analyzed because it discusses the teachings of KHD which is interesting and is relevant in recent education. The research method uses inferential content analysis. The researcher comprehend and interpret the symbolic message in the article. The research procedure used are the procurement of data, data reduction, inference, and data analysis. Construct analysis is done using qualitative approach with conceptual domain. Data validity was measured by using semantic validity and test retest reliability. The research result shows that there are philosophical basis on education principles of Tamansiswa, philosophy of essentialism and humanism, which is values ​​issued in cultural or social heritage that have existed since human civilization, for example in the among systems and trilogy leadership slogan Ing Ngarso Sung Tulodho, Ing Madyo Mangun Karso and Tut Wuri Handayani implemented in Tamansiswa education.
PENGEMBANGAN MODUL PEMROGRAMAN WEBSITE CONTENT MANAGEMENT SYSTEM UNTUK MENINGKATKAN KEMAMPUAN GURU DALAM PENGELOLAAN WEBSITE SEKOLAH SMA NEGERI 1 CEPOGO BOYOLALI
Authors: Utami Putri , Hidayati Dian
Published: January 2021

The development and advancement of science and technology can provide effectiveness and interactivity in the world of education. The school website is a technology product that must be used by schools. This study aims to develop and determine the feasibility of a website programming module to improve teachers' abilities in managing school websites. This research is a Research and Development (RnD) development research using the ADDIE development method. Data collection techniques using interviews and questionnaires then analysed using qualitative and quantitative data. The subjects of this study were media experts, teachers and operators at SMA Negeri 1 Cepogo. The results of this study indicate that research and development have carried out using the ADDIE model steps, namely (Analysis, Design, Development, Implementation, Evaluation). The average assessment by the score expert validation test obtained was 87.1 included in the "Very Good" category, the response of the phase 1 field test teacher and stage 2 field test obtained an average value of 81.8 in the "Very Good" category. The quantitative data analysis took the average results of the assessment of expert validation tests and user trials. The score is 84.45 with the category "Very Good" and shows that the website programming module is suitable for use by teachers in managing school websites.
Accelerating and Improving Simulation Performance in Communication Systems Modeling through Parallel Computing and Clustering
Authors: Kapusniak Kacper , Nautiyal Tanmay , Grammenos Ryan
Published: January 2021

Existing  5G  communication  systems  suffer  from  two  major  problems: the need  for  better  spectrum  efficiency  and  lesser  adjacent  channel  interference.  Thus,  development  of  novel  waveform  techniques  to  overcome  these  problems  is  a  major  topic  of  research  amongst  scholars  and  it  requires  carrying  out  Monte  Carlo  simulations  in  MATLAB©  (by MathWorks) to  measure  the  Bit  Error  Rate  (BER)  of  these  communication  models.  As  most  of  these  simulations  require  millions  of  computations,  they  take  a  significantly  long  time  to  run  (for  example,  days)  as  they  run  on  single-core  machines  and  carry  out  the  computations  serially.  The  main  objective  of  this  research  is  to  reimplement  current  scripts  using  various  parallel  computing  techniques  in  MATLAB  to  study  which  one  is  the  best suited  for  this  particular  type  of  simulations  while  also  scaling  these  scripts  onto  a  multi-core  cluster  to  further  improve  the  execution  time.
Biology and Management of Dogfish Sharks
Authors:   Fisheries Science Services, Marine Institute, Galway, Ireland
Published: January 2021

Abstract.—The Northeast Atlantic contains one stock of spiny dogfish Squalus acanthias (also known as spurdog), which has been in decline since the 1960s. Landings reached a peak of 55,600 metric tons (mt) in 1963; 24 years later they had fallen to 44,600 mt and 12 years after that to 9,800 mt. The last phase of steep decline commenced in 1987 and coincided with heavy landings from mainly the Celtic Seas of which Ireland took a substantial share in a gill-net fishery off its southwest coast. At first the Irish gill-net fishery harvested predominantly female and pregnant spiny dogfish but the characteristics of the landings rapidly changed.
Comparative Analysis of Velocity Measurements In Ducted Axial Fan
Authors: P.K Manikandapirapu , G.R Srinivasa , K.G Sudhakar , D. Madhu
Published: January 2021

The paper deals with experimental investigation and comparative analysis of velocity measurements in ducted axial fan. Experiments were carried out to investigate the nature of velocity variations in a ducted axial fan at different throttle positions as a function of rotor speed employing both Pitot tube and Hot Wire Anemometer. Quantitative analyses of the magnitudes of velocity measured by a pitot tube as well as a hot wire anemometer are examined and various graphs have been plotted. The percentage errors of velocity level have been determined.
Modelling And Study of Motion Control System for Motorized Robot Arm Using Mat Lab And Analysis of The Arm By Using Ansys
Authors: Kumar K. Manoj , Sambaiah Ch.
Published: January 2021

In this paper the Motion control is one of the technological foundations of industrial automation. Putting an object in the correct place with the right amount of force and torque at the right time is essential for efficient manufacturing operation. In the present work modeling of control system for motorized robot arm with a single degree of freedom is done. The results of the control system are also described. The control algorithm was developed by MATLAB software which is widely used in controlling application. In this system the DC motor moves the robot arm to the desired angular position in accordance with the input given.
PLC-SCADA Based Automated Logistics Warehouse Management System
Authors: Ramanan V. , R Sachin.
Published: January 2021

This paper is based upon use of PLCs(Programmable Logic Controllers)and SCADA(Supervisory Control and Data Acquisition)for the purpose of automatic material handling inside the warehouse and the logistics industries . Involvement of manpower has various disadvantages and so automating the process will curb all the demerits The implementation of this system would reduce the work done by humans to about 90% and thereby resulting in the increase in work/process speed.
EFFECT OF EXPERIMENTAL VARIABLES ON TRIBOLOGICAL PROPERTIES OF MARTENSITIC STAINLESS STEEL
Authors: SAPATE S.G. , RATHOD AVISHKAR , AHMED S.
Published: January 2021

Wear by slurry abrasion occurs during transport of abrasive slurries encountered in industrial and specially mining applications, extruders, and in slurry pumps. Steel piping systems are widely used in mining to convey the mineral, ore and tailing slurries to the processing plant, as well as to recycle the debris medium back to the mining area. Hardfacing by welding is one of the economic methods to improve wear resistance of engineering components. The present work reports slurry abrasion behaviour of hardfaced martensitic stainless steel under a wide range of experimental condition. The slurry abrasion experiments were performed using slurry abrasion test apparatus using silica sand as the abrasive medium. The effect of test parameter such as sliding distance, normal load and slurry concentration of abrasive medium on slurry abrasion behaviors of martensitic stainless steel was investigated. The slurry abrasion volume loss exhibited increasing trend with increasing sliding distance, normal load and slurry concentration, although the magnitude of increase was different in each case. The results of the investigation suggest and slurry concentration had relatively stronger effect as compared to that of normal load.. The morphological studies of the worn surfaces revealed characteristic differences in the wear pattern under different test conditions.
SOUND SPECTRUM MEASUREMENTS IN DUCTED AXIAL FAN UNDER STABLE CONDITION AT FREQUENCY RANGE 6000 TO 6600 HZ
Authors: MANIKANDAPIRAPU MANIKANDAPIRAPU , SRINIVASA P.K. , SUDHAKAR G.R. , D K.G. MADHU
Published: January 2021

Performance of axial fan is found to reduce drastically when instability is encountered during its operation. Performance of an axial fan is severely impaired by many factors mostly related to system instabilities due to rotating stall and surge phenomenon experienced during its operation. The present work involves measuring the sound spectrum measurements in ducted axial fan under stable condition at frequency range from 6000 to 6600 Hz. Objective of the experiment is to measure the frequency domain signal and study the sound Characteristics in ducted axial fan by using spectrum analyser. Different types of FFT signals have been measured under stable condition for the frequency range of 6000 Hz to 6600 Hz with respect to rotor speed and different graphs are plotted for ducted axial fan.
A STUDY ON DEVELOPMENT OF INDUSTRIAL TRIBOLOGY IN INDIA WITH SOME FUTURE PROSPECTS
Authors: SINGH VIVEK , VIMAL JYOTI , CHATURVEDI VEDANSH
Published: January 2021

The Indian industry is facing tough challenges from various others countries in different areas. Environmental challenges, government pressure to improve efficiencies, urgent technological advancement requirement, emission cut from tribological and lubricating systems. A brief review of industrial development in India is outlined in this paper. I will also discuss about fields of tribology like Engine Tribology, Green Tribology, Transmission Tribology and Tire Tribology with some suggestions. Role of education in tribology to makes a balance between technology and environment. At lasts a review on future trends in industrial tribology.
ADVANCED HEAT TRANSFER ENHANCEMENT USING Tio2 WATER BASED NANO FLUIDS
Authors: T KAVITHA , A RAJENDRAN , A DURAIRAJAN , M SYEDABUTHAHIR
Published: January 2021

Nanofluids are quasi single phase medium containing stable colloidal dispersion of ultrafine or nanometric metallic or ceramic particles in a given fluid. Nanofluids possess immense potential of application to improve heat transfer and energy efficiency in several areas including vehicular cooling in transportation, power generation, defense, nuclear, space, microelectronics and biomedical devices. In the present contribution, a brief description about the Nano Tio2 has been presented to provide an update on the historical evolution of this concept, possible synthesis routes, level of improvements are reported. According to this review, the future developments of these technologies are discussed.
NUMERICAL ANALYSIS OF TRAPEZOIDAL SHAPE DOUBLE LAYER MICROCHANNEL HEAT SINK
Authors: SHARMA DEEWAKAR , SINGH PARBAR PRATHAM , GARG HARRY
Published: January 2021

With increasing demand for higher computational speed and emerging micro-systems, thermal management poses serious challenge for efficient cooling. Among these liquid cooling using microchannels has gained significant attention and has been extended to its double layer configuration which eliminates the drawback of significant temperature variations in single layer system. The double layer configuration has been primarily analyzed for rectangular ducts. In this study the performance of trapezoidal shape double layer microchannel heat sink is investigated and compared to rectangular double layer heat sink of same flow area. Four different possible configurations are analyzed and comparative study among respective counter and parallel configuration is performed followed by comparison among each configuration. The performance is evaluated on the basis of maximum temperature attained at the heated surface as well as minimum temperature variations. Finally the best performing configuration is compared with double layer rectangular heat sink. Analysis shows that among various trapezoidal configurations, the one with larger side face to face is most suitable. Further comparative study with rectangular system shows that performance of trapezoidal double layer heat sink is superior in both aspects, i.e. minimum thermal resistance as well as minimum temperature variations.
Tutela administrativa nas relações de consumo: a relevância do Projeto de Lei 5.916/2013 para a proteção dos vulneráveis e a efetividade do CDC
Authors: Silva Joseane Suzart Lopes da
Published: January 2021

Trata o presente artigo sobre a importância da Tutela Administrativa nas Relações de Consumo e a relevância da aprovação do Projeto de Lei 5.916/2013 para o seu fortalecimento em prol da proteção dos mais vulneráveis. A hipótese central da pesquisa empreendida consiste em verificar se uma atuação mais profícua dos órgãos públicos, instituídos para o tratamento dos interesses e direitos dos destinatários de bens, geraria mais efetividade para o microssistema arregimentado pela Lei Federal 8.078/90, contribuindo adrede para amenizar a sobrecarga do aparato jurisdicional. Destina-se a primeira parte desta produção a abordar o princípio da intervenção estatal e a atuação do poder público na seara mercadológica nos espectros organizacional, político, normativo, fiscalizador e sancionador, transpondo-se a abordagem para a atual estrutura do Sistema Nacional de Defesa do Consumidor (SNDC). Em seguida, discorre-se sobre a atual configuração das sanções administrativas existentes no CDC e as inovações albergadas pelo Projeto de Lei no que concerne à ampliação do rol de penalidades que poderão incidir em face dos conflitos apresentados pelos interessados perante os aludidos órgãos públicos. Para a realização deste trabalho, optou-se pelos métodos hermenêutico, dialético e argumentativo, a vertente crítico-metodológica e as linhas de investigação jurídico-projetiva e jurídico-prospectiva. Realizou-se a pesquisa exploratória, bibliográfica e documental, adotando-se a técnica da documentação indireta. Concluiu-se no sentido de que a aprovação do dito prospecto normativo colaborará para a maior concretude das disposições legais do diploma consumerista, bem como para a redução de litígios desnecessários no âmbito jurisdicional.
Selected psychometric aspects of the Polish version of the Liverpool Self-efficacy Scale
Authors: Dymecka Joanna , Gerymski Rafał , Bidzan Mariola
Published: January 2021

Background

Self-efficacy expresses the individual’s belief in their ability to take up and continue actions in order to achieve a particular result and cope with various life events. For people with multiple sclerosis (MS), self-efficacy is an im-portant resource because it affects how they adapt to the disease, and influences their motivation, health-related behavior and physical activity. It also has a great impact on their quality of life. Because of the lack of tools for meas-uring self-efficacy in Polish patients with multiple sclerosis, the goal of the current study was to develop a Polish language version of the Liverpool Self-efficacy Scale (LSES) and assess its validity and reliability.

Participants and procedure

A total of 175 people diagnosed with MS took part in the study. A Polish version of the LSES, the Sense of Coherence Questionnaire (SOC-29), the Resiliency Assessment Scale (SPP-25), the Health-Related Hardiness Scale (HRHS), the Acceptance of Illness Scale (AIS) and the Multiple Sclerosis Impact Scale were applied.

Results

Confirmatory factor analysis, reliability analysis using α and ω coefficients, and two measures of validity (content and criterion validity) were used in order to validate psychometric properties of the Polish version of the LSES. Our analyses confirmed a good fit of the one-factor and two-factor models.

Conclusions

The results indicate that the Polish version of the LSES is a useful and valuable tool for assessing levels of self-efficacy in Polish patients with multiple sclerosis. The scale can be used for both clinical and research purposes.
Structural investigation of the Short Dark Triad for Youths (13-16 years)
Authors: Klimczak Agnieszka , Turska Dorota
Published: January 2021

Background

The classic three-factor structure of the Short Dark Triad Questionnaire (SD3) has been confirmed in studies on different popu-lations. However, a few studies (including those on the Polish population) reveal some problem with the proposed SD3 struc-ture. The main goal of the present study was to investigate the structure of the Short Dark Triad for Youths (SD3-Y) in a sample of subclinical Polish adolescents. The results obtained should be treated as comments on the inconsistencies that exist among classic and critical conceptualisations of the SD3 structure.

Participants and procedure

Three studies were conducted: (1) adaptation of the Polish version of the SD3 in terms of linguistic and cognitive needs of ado-lescents (N = 45); (2) investigation of the structure of the SD3-Y (N = 405); (3) examination of the external validity of the SD3-Y (N = 325).

Results

A series of confirmatory factor analyses, reliability analyses using ω coefficients as well as a correlation analysis between the Dark Triad traits and Big Five traits, aggression and self-esteem were conducted. No replication of the factor structure of the classic model was obtained. The bifactor Dark Dyad model with psychopathy and Machiavellianism as two dimensions best fits the data. The ω reliability coefficients were acceptable with the highest value for psychopathy. There was an admissible external validity level.

Conclusions

The Dark Triad as measured by SD3-Y comprises the Dark Dyad (psychopathy, Machiavellianism) and narcissism as a feature independent of the other two. Such data comply with the critical findings relating to the structure of the SD3 with a Polish adult population.
The risk for the female athlete triad in Brazilian athletes
Authors: Maria Uyara Pereira De , Juzwiak Claudia Ridel
Published: January 2021

Purpose

The female athlete triad (triad) is a medical condition observed in athletes and physically active females. Its components are low energy availability, with or without an eating disorder, amenorrhea, and osteoporosis. The aims of this study
were to identify the triad risk in Brazilian athletes and to characterize the prevalence of symptoms associated with the
triad risk.

Methods

CrossFit, endurance, aesthetic, combat, and team sports female athletes aged 18–39 years, training 5 hours/week
and regularly competing answered the Brazilian version of the Low Energy Availability in Females Questionnaire (LEAF-Q).

Results

Triad risk, corresponding to a LEAF-Q score 8, was identified in 34% of the participants. Combat athletes presented the highest mean LEAF-Q score [10.6 (3.0); p < 0.05] and injury score [4.8 (1.6); p < 0.05]. Overall, 48 athletes reported
an injury due to training overload in the previous year; this type of injury was associated with the triad risk (p < 0.05).
A LEAF-Q score 8 was related to gastrointestinal (p < 0.05) and menstrual dysfunctions (p < 0.001). A high prevalence
(46.4%) of self-reported menstrual dysfunction was observed. A higher percentage (50%) of weight-sensitive sports athletes
than of team sports athletes presented LEAF-Q score 8.

Conclusions

Triad risk was observed in Brazilian athletes competing in numerous sports; however, weight-sensitive sports
athletes, especially combat athletes, are more vulnerable to the triad risk. LEAF-Q is a reliable tool to identify athletes at
risk of developing the triad and symptoms related to low energy availability
Stress and burnout in teaching. Study in an inclusive school workplace
Authors: Candeias Adelinda , Galindo Edgar , Calisto Inês , Borralho Liberata , Reschke Konrad
Published: January 2021

Background

Teaching is a profession associated with high levels of stress and burnout, affecting teachers’ performance in the workplace. The main goal of the current study is to investigate stress and burnout conditions of teachers working presently in inclusive schools and the corresponding influence of personal variables.

Participants and procedure

Participants were 7086 regular teachers, or non-specialists, and 442 special education teachers, or specialists (N = 7528).

Results

Non-specialist teachers showed higher levels of burnout than specialist teachers in inclusive schools. Addition-ally, the results showed that higher levels of burnout are correlated with vulnerability to stress (perfectionism, inhibition, lack of social support, adverse living conditions, dramatization of existence and subjugation), in both groups of teachers. Non-specialists with more professional experience showed a high global score on burnout. In both groups, teachers with a higher level of training (academic degree and specialization) showed lesser vulnerability to stress, especially lower dependence. Concerning the predictors of burnout, vulnerability to stress played an important role as a predictor in both groups, suggesting that more vulnerable teachers are more prone to develop burnout, fatigue and exhaustion.

Conclusions

Stress emerges as an important predictor of burnout. Non-specialist teachers are more exposed to burnout and stress in an inclusive workplace, because they have to deal with new demands, requiring new resources, espe-cially new professional skills. On the other hand, teachers with more academic and professional training show higher resilience to stress and more independence, suggesting the crucial value of training to improve an in-clusive school workplace. Training can have an important impact on stress/burnout and consequently on the professional performance and efficacy of teachers in inclusive schools.
The spectrum of multimodality imaging findings in hepatic alveolar echinococcosis and the potential role of diffusion-weighted imaging
in its characterisation
Authors: Parry Arshed H. , Wani Abdul H. , Feroz Imza
Published: January 2021

Introduction

To study the spectrum of imaging findings in hepatic alveolar echinococcosis (HAE) and to evaluate the potential role of diffusion-weighted imaging (DWI) in its characterisation.

Material and methods

Two radiologists with more than seven years of experience retrospectively studied ultrasonography, computed tomography (CT), and magnetic resonance imaging (MRI) findings in 23 histopathologically proven cases of HAE with emphasis on the appearance and extent of disease. DWI characteristics of lesions were noted, and their apparent diffusion values (ADC) were calculated.

Results

Ultrasonography features of HAE included heterogeneous, hyperechoic hepatic mass with or without calcification (n = 20), or heterogeneous mass with solid-cystic appearance (n = 2). CT revealed heterogeneous density infiltrative hepatic mass with no contrast enhancement in 19 patients or thick-walled cystic mass (n = 4). Following Kodama classification one type 1, six type 2, two type 3, eight type 4, and two type 5 lesions were identified on T2-weighted MRI. No enhancement was seen on post-contrast T1-weighted images. Mean ADC values were
1.74 ± 0.48 × 10-3 mm2/s (range: 1.39 × 10-3 mm2/s to 2.3 × 10-3 mm2/s).

Conclusions

HAE by virtue of its infiltrative growth pattern with a tendency to involve biliary, vascular, and extra hepatic structures can be easily misdiagnosed as malignant hepatic neoplasm. Knowledge of varied imaging appearances of HAE is essential to suspect the condition and to make an appropriate diagnosis. Diffusion-weighted imaging is a useful adjunct with relatively high diffusivity (high ADC values) suggesting diagnosis of alveolar hydatid.
The risk of renal function deterioration in abdominal aortic stent graft patients with and without previous kidney function failure – an analysis of risk factors
Authors: Urbanek Tomasz , Biolik Grzegorz , Zelawski Wojciech , Hapeta Beata , Juśko Maciej , Kuczmik Waclaw
Published: January 2021

Introduction

Kidney failure influences the treatment outcomes of abdominal aortic aneurysm (AAA). A prospective study of renal function before and after aortic stent-graft treatment was performed. Special attention was paid to the influence of preoperative kidney function as well as the impact of the radiological follow-up.

Material and methods

A total of 214 endovascularly treated AAA patients were included. In all cases, pre- and postope­rative estimated glomerular filtration rate (eGFR) and serum creatinine were noted. Patients were prospectively followed up for a minimum of two years.

Results

The baseline eGFR was 69.38 ± 16.29 ml/min/1.73 m2. Chronic kidney disease at baseline was noted in 29% of patients. In the direct postoperative period, acute kidney injury was identified in 8.4% of cases. Additional endo­vascular procedures within two years of observation were performed in 5.6% of cases, and over the two years of follow-up, in the study group from one to six angio-computed tomographic scans (angio-CT) per patient were performed. The mean eGFR value after the 24-month follow-up was significantly lower than the preoperative value. Among the factors influencing kidney function, an angio-CT during the same hospital stay of the primary stent-graft procedures was identified. The type of stent-graft, contrast volume during the primary procedure, need for reintervention, concomitant disease presence, and statin use did not show statistical significance.

Conclusions

Angio-CT followed by stent-graft implantation over a short time interval (within the same hospitalisation) significantly worsened renal function in the late follow-up and should be avoided in elective AAA cases.
Scientific authorship: a primer for researchers
Authors: Zimba Olena , Gasparyan Armen
Published: January 2021

The International Committee of Medical Journal Editors (ICMJE) proposed the authorship criteria which can be employed by medics and allied specialists. Scholars who substantively contribute to research and writing, revise, approve final drafts for target journal submissions, and take responsibility for all aspects of the work deserve authorship. Increasing awareness of the ICMJE criteria, incorporating related points in journal instructions, and enforcing them in daily practice may have positive impact for healthcare. Instances of inappropriate authorship are ethical transgressions which can be avoided by editors employing strategies of author profile evaluations. There are several platforms for recording author accomplishments which may improve the discoverability of scholarly works and prevent unethical conduct.

Most publishers advise authors to submit their Open Researcher and Contributor IDs (ORCID) at the manuscript submission. Other identifiers, such as Twitter handles, are also emerging as tools to stimulate post-publication communication and increase authors’ accountability for published articles.
Ocular manifestations in patients with systemic sclerosis
Authors: Kozikowska Małgorzata , Luboń Wojciech , Kucharz Eugeniusz , Mrukwa-Kominek Ewa
Published: January 2021

Systemic sclerosis (SSc) is a rare, chronic autoimmune disease with unknown etiology. Its prominent features are fibrosis, vasculopathy and impaired immune response. Disease can also affect eyes leading to various findings in ophthalmological examination.

The objective of this study was to determine the prevalence and type of ocular involvement in patients with SSc. A systematic literature review was conducted using electronic databases. A combination of following keywords was used: “systemic sclerosis” and ophthalmology-related search terms, including the keywords “eye”, “ocular” and “ophthalmic”.

In conclusion, eyelid and conjunctival abnormalities and dry eye disease are among the most common ocular manifestations of SSc. Their diversity is connected to complexity of the disease.