bluuebunny/crossref_metadata_2025 huggingface dataset:
Libras como componente curricular obrigatório: um olhar para os cursos de licenciatura em química das três universidades estaduais paulistas
Authors: Maltoni Naira Biagini , Torres Júlio Cesar , Santos Thalita Alves dos
Published: December 2021

O Decreto 5.626/2005 estabelece a LIBRAS como componente curricular obrigatório nos cursos de licenciatura e fonoaudiologia. Este trabalho objetiva entender como as três universidades estaduais paulistas ofertam a disciplina nos cursos de licenciatura em Química. Foram analisados oito cursos no total, já que, tirando a Unicamp, tanto a USP quanto a UNESP apresentam essa modalidade em mais de um câmpus. Para coletar os dados, foi feita uma pesquisa online pelos sites das universidades no portal dos referidos cursos, onde foram consultados os horários de aulas e o Projeto Político Pedagógico. Para realizar a discussão dos dados, foi escolhido o método de Bereday, passando pelas etapas de definição, interpretação, justaposição e comparação. À medida que o Decreto não estabelece regras, a pesquisa conseguiu expor como cada universidade elaborou a disciplina e discutir fragilidades e pontos fortes dos métodos escolhidos.
Altas capacidades y cognición social
Authors: Quintero Rodríguez Ricardo , Aguirre Delgado Triana , Borges Del Rosal África
Published: December 2021

Las altas capacidades, multidimensionalmente configuradas, más allá de un CI elevado, son resultado tanto de un proceso de desarrollo madurativo como psicosocial precoz. Por consiguiente, un campo de estudio de especial interés es la cognición social, un campo que engloba a los procesos mentales que perciben, captan e interpretan la información social del entorno. El presente estudio busca determinar las diferencias existentes entre el alumnado con altas capacidades comparándolo con sus pares de inteligencia normativa. Atendiendo a ello, se realizó un muestreo intencional en adolescentes, obteniendo una muestra de 146 estudiantes de Enseñanza Secundaria Se utilizó un diseño transversal con metodología de encuesta. Los resultados avalan las hipótesis planteadas. No obstante, se debate la relevancia de estos aspectos diferenciales entre el alumnado de altas capacidades y sus pares.
Is self-harm among orthodontic patients related to dislike of dentofacial features and oral health-related quality of life?
Authors: Al-Bitar Zaid B. , Hamdan Ahmad M. , Al-Omari Iyad K. , Naini Farhad B. , Gill Daljit S. , Al-Omiri Mahmoud K.
Published: December 2021

Objectives

To investigate the relationship between self-reported self-harm and dislike of dentofacial features and oral health-related quality of life (OHRQoL).

Materials and Methods

Anonymous, self-reporting questionnaires were completed by 699 school children (aged 13–14 years), representing over 1% of the age group in Amman, Jordan. Participants were invited from 23 randomly selected schools in 10 educational directorates. OHRQoL was assessed using the Child Perception Questionnaire (CPQ 11–14). Self-harm was assessed using a constructed self-reporting questionnaire. The relationship between OHRQoL and self-harm was assessed and significant findings were identified at probability of α = 0.05.

Results

Over one-quarter of schoolchildren (26.9%, n = 88) admitted self-harming behavior. Self-harm was reported to be due to dislike of dentofacial appearance among 12.9% of participants (n = 90). Higher CPQ 11–14 total scores and individual dimension scores were associated with the presence of self-harm (P < .001). High self-harm incidence was reported among participants who had dentofacial features that affected appearance (P < .001). Among subjects admitting self-harm, the frequency of self-harming behavior ranged from once to over 10 times per year.

Conclusions

Significant relationships were found between self-harm and dislike of dentofacial features and OHRQoL.
CGM Metrics Predict Imminent Progression to Type 1 Diabetes: Autoimmunity Screening for Kids (ASK) Study
Authors: Steck Andrea K. , Dong Fran , Geno Rasmussen Cristy , Bautista Kimberly , Sepulveda Flor , Baxter Judith , Yu Liping , Frohnert Brigitte I. , Rewers Marian J.
Published: December 2021

OBJECTIVE

Children identified with stage 1 type 1 diabetes are at high risk for progressing to stage 3 (clinical) diabetes and require accurate monitoring. Our aim was to establish continuous glucose monitoring (CGM) metrics that could predict imminent progression to diabetes.

RESEARCH DESIGN AND METHODS

In the Autoimmunity Screening for Kids study, 91 children who were persistently islet autoantibody positive (median age 11.5 years; 48% non-Hispanic White; 57% female) with a baseline CGM were followed for development of diabetes for a median of 6 (range 0.2–34) months. Of these, 16 (18%) progressed to clinical diabetes in a median of 4.5 (range 0.4–29) months.

RESULTS

Compared with children who did not progress to clinical diabetes (nonprogressors), those who did (progressors) had significantly higher average sensor glucose levels (119 vs. 105 mg/dL, P < 0.001) and increased glycemic variability (SD 27 vs. 16, coefficient of variation, 21 vs. 15, mean of daily differences 24 vs. 16, and mean amplitude of glycemic excursions 43 vs. 26, all P < 0.001). For progressors, 21% of the time was spent with glucose levels >140 mg/dL (TA140) and 8% of time >160 mg/dL, compared with 3% and 1%, respectively, for nonprogressors. In survival analyses, the risk of progression to diabetes in 1 year was 80% in those with TA140 >10%; in contrast, it was only 5% in the other participants. Performance of prediction by receiver operating curve analyses showed area under the curve of ≥0.89 for both individual and combined CGM metric models.

CONCLUSIONS

TA140 >10% is associated with a high risk of progression to clinical diabetes within the next year in autoantibody-positive children. CGM should be included in the ongoing monitoring of high-risk children and could be used as potential entry criterion for prevention trials.
First snapshot on behavioral characteristics and related factors of patients with chronic kidney disease in South Korea during the COVID-19 pandemic (June to October 2020)
Authors: Kim Yaerim , Lee Inae , Lee Jeonghwan , Park Jae Yoon , An Jung Nam , Yoo Kyung Don , Kim Yong Chul , Park Woo Yeong , Jin Kyubok , Kho Younglim , You Myoungsoon , Kim Dong Ki , Choi Kyungho , Lee Jung Pyo
Published: December 2021

Background: The recent novel coronavirus disease 2019 (COVID-19) pandemic has led to unprecedented changes in behavior. We evaluated the current status of precautionary behavior and physical activity in chronic kidney disease (CKD) patients during the COVID-19 pandemic.Methods: A population of CKD patients (n = 306) registered in the Study on Kidney Disease and Environmental Chemicals (SKETCH, Clinical Trial No. NCT04679168) cohort recruited from June 2020 to October 2020 was included in the study. We conducted a questionnaire survey related to risk perception of COVID-19, precautionary behavior, and physical activity.Results: There were 187 patients (61.1%) with estimated glomerular filtration rate of <45 mL/min/1.73 m2. This population showed a higher degree of risk perception for COVID-19 than the general population. Age was the most significant determinant of risk perception among CKD patients. During the pandemic, social distancing and hygiene-related behavior were significantly increased (p < 0.001). The frequency of exercise was decreased only in those who took regular exercise, without diabetes, or with a lower Charlson comorbidity index (CCI) (p < 0.001), with no change among the other groups. Socioeconomic status and comorbidities significantly affected behavioral characteristics regardless of the category. Education and income were significantly associated with precautionary behaviors such as staying at home and hand sanitizer use. Patients with higher CCI status significantly increased frequency of exercise (adjusted odds ratio, 2.10; 95% confidence interval, 1.01–4.38).Conclusion: CKD patients showed higher risk perception with active precautionary behavioral changes than the general population. Healthcare providers should be aware of the characteristics to comprise precautionary behavior without reducing physical activity.
The effect of a sulphur rich service environment and process cleaning on crack initiation, propagation and failure mechanisms
Authors:   , Ball Christopher D.
Published: December 2021

Due to increasing operational temperatures within the High Pressure Turbine module, components are experiencing hot-corrosion degradation which can compromise safe service life. Sulphides form as a result of the operational environment and their diffusion into the substrate alloy leads to material loss and the initiation of cracking. At set intervals engine modules are removed from wing and are disassembled for inspection and repair. As part of this process they undergo a cleaning process. This project was defined to identify how this cleaning process interacts with the subsequent re-introduction into service and re-exposure to the hot-corrosion mechanisms. This thesis identifies the effects of surface corrosion and sulphur diffusion on fatigue crack initiation, propagation and final failure mechanisms under a range of different environmental conditions. It is demonstrated that sulphides remain within the substrate following typical cleaning procedures and that the sulphide diffusion rate is directly linked to the thickness of oxide formed on the substrate surface. There was no apparent effect from various combinations of salt and SO2 gas environment on the crack propagation response. Therefore, fatigue behaviour was dominated by initiation mechanisms. Whilst all hot-corrosion environments sampled led to a reduction in low cycle fatigue strength relative to “baseline” performance (i.e. isothermal fatigue conducted in high temperature air) the incorporation of a cleaning procedure helped prolong the fatigue life when compared to exposed, un-cleaned specimens. The correlation between salting/exposure, surface corrosion and sulphide diffusion will be described.
Las mujeres en alerta por violencia de género en espacios públicos. Comparativo con tres escuelas de educación superior públicas en México
Authors: Hernández Herrera Claudia Alejandra
Published: December 2021

El acoso sexual callejero es un tipo de violencia de género que pone en evidencia las desigualdades entre mujeres y hombres, y la dominación masculina en los espacios públicos. El escaso sentido de inseguridad, aunado a la insuficiente confianza en los procesos de denuncia y la impunidad, generan en las mujeres y en las niñas un miedo constante cuando deben transitar por espacios públicos, lo cual vulnera sus derechos de movilidad y bienestar. Por eso, el objetivo de este artículo fue estudiar las percepciones de las universitarias con respecto a las manifestaciones severas y a las conductas de acoso sexual que les generan miedo e inseguridad. De ese modo, se procuró identificar los escenarios de violencia de género a los que se enfrentan las estudiantes. Para ello, se diseñó un estudio transversal cuantitativo, con una muestra por conveniencia de 1656 mujeres estudiantes de tres escuelas públicas de enseñanza superior en México. Los resultados demuestran que las participantes perciben la presencia constante de acosadores y hostigadores sexuales en las universidades. Asimismo, se identificaron algunas situaciones habituales que viven las universitarias que han sido víctimas de acoso, lo cual las ha obligado a reforzar sus estrategias de evasión. Por tanto, se concluye que es necesaria la intervención urgente de los gobiernos y las universidades con acciones contundentes y con cuerpos policiales sensibles a la perspectiva de género.
Modelling and simulation of pneumatic system operation of mobile robot
Authors:   Lviv Polytechnic National University, Korendiy Vitaliy , Kachur Oleksandr ,   Lviv Polytechnic National University, Havrylchenko Oleksandr ,   Lviv Polytechnic National University, Lozynskyy Vasyl ,   Lviv Polytechnic National University
Published: December 2021

Problem statement. Mobile robots are currently of significant interest among researchers and designers all over the world. One of the prospective drives of such robots is equipped by a pneumatically operated orthogonal system. The processes of development and improvement of orthogonal walking robots are significantly constrained because of the lack of an open-access comprehensive scientific and theoretical framework for calculating and designing of the energy-efficient and environmental-friendly pneumatic walking drives. Purpose. The main purpose of this research consists in the kinematic analysis, motion modelling and pneumatic system simulation of the mobile robot with an orthogonal walking drive. Methodology. The research is carried out using the basic laws and principles of mechanics, pneumatics and automation. The numerical modelling of the robot motion is conducted in MathCad software. The computer simulation of the robot kinematics is performed using SolidWorks software. The operational characteristics of the robot’s pneumatic system are investigated in Festo FluidSim software. Findings (results) and originality (novelty). The improved design of the mobile robot equipped by the orthogonal walking drive and turning mechanism is thoroughly investigated. The motion equations of the orthogonal walking drive are deduced, and the graphical dependencies describing the trajectories (paths) of the robot’s feet and body are constructed. The pneumatically operated system ensuring the robot rectilinear and curvilinear locomotion is substantiated. Practical value. The proposed design of the walking robot can be used while developing industrial (production) prototypes of mobile robotic systems intended for performing various activities in the environments that are not suitable for using electric power. Scopes of further investigations. While carrying out further investigations, it is expedient to design the devices for changing the robot locomotion speed and controlling the lifting height of its feet.
Taidehistoriasta toisaalle – rajapintoja ja uusia suuntia
Authors: Kokkinen Nina , Niemelä Riikka
Published: December 2021

Pääkirjoitus
Uusien aikaorientaatioiden ongelma taidehistoriassa – anakronismi, kronotopia ja heterokronia
Authors: Kuusamo Altti
Published: December 2021

Tarkastelen artikkelissani taidehistoriallisessa tutkimuksessa viime aikoina yleistyneen anakronistisen asenteen eri näkökohtia. Pohdin, voiko anakronistinen asennoituminen murtaa ns. lineaarisen aikakäsityksen? Punnitsen myös anakronismin ajatusta kahden toisentyyppisen ajallisuuden käsitteen, kronotopian ja heterokronian valossa. Suhteeni anakronismin ideaan taidehistoriassa on kriittinen: analysoin tarkemmin, miten anakronismin ajatuksen keskeinen lähettiläs Georges Didi-Huberman soveltaa käsitettä. Liitän anakronismin idean aiempiin ajattoman taiteen puolestapuhujien ajatuksiin ja totean anakronismin uudeksi formalismin muodoksi.
Taidehistorian ja kehitysmaatutkimuksen suhde poikkitieteellisenä haasteena
Authors: Lamberg Essi
Published: December 2021

Kirjoituksessa tarkastellaan sitä, minkälaisia haasteita arkkitehtuurihistorian tutkimus niin kutsutuissa kehitysmaissa nostaa esiin ja minkälaisia valmiuksia ne taidehistorian tutkijalta edellyttävät. Keskeisimpänä tarkastelun kohteena on taidehistorian tieteenalan suhde kehitysmaatutkimukseen. Artikkeli perustuu kirjoittajan poikkitieteellisen, suomalaisten arkkitehtien liikkuvuutta Saharan eteläpuolisessa Afrikassa kehitysyhteistyön vaikutuspiirissä 1960–1980-luvuilla tarkastelevan väitöskirjahankkeen aikana muodostuneisiin tutkimustuloksiin ja havaintoihin. Kehitysyhteistyöhankkeisiin osallistuminen edellytti arkkitehdeilta uutta ammatillista aluevaltausta alakohtaisine tiedollisine ja kyvyllisine vaatimuksineen. Samalla tavalla alan tutkimus edellyttää tutkijalta muidenkin tieteenalojen kuin taidehistorian hallintaa. Se, miten tieteenalarajat ja niiden olemus mielletään, vaikuttaa oleellisesti siihen, miten luontevana tai epäluontevana taidehistorian ja kehitysmaatutkimuksen välinen suhde näyttäytyy.
The development of guidelines to improve the interpersonal communication of students in preparation for entering the workforce thought information services
Authors: Yunizar Fitri , Yusuf A. Muri , Syukur Yarmis
Published: December 2021

Communication is very important in the world of work. With communication, individuals can socialize with other individuals well. But in reality, there are still many individuals who have not been able to communicate well. Vocational High School (SMK) is a secondary education that prepares students to become professional workers. Therefore, it is expected that SMKs can produce students who understand and can communicate well. Interpersonal communication is sending messages from individuals to other individuals with direct effects and feedback. This research is a research development that aims to develop guidelines to improve interpersonal communication of vocational high school students in entering into the world of work through information services. The sample selection uses purposive sampling. The results of this study indicate a material feasibility test score of 78.9 with a feasible category and expert judgment on the appearance of an appearance with an average score of 85.7 with a very feasible category. As for the practicality test an average score of 92.8 with a high category.
The Achievement Of Student Developmental Task Based On Type Of School
Authors: Azhara Tazkia Dini , Nirwana Herman , Syahniar Syahniar
Published: December 2021

The objective of study is to describe the achievement of student developmental task based on the type of schools that are Senior High School and Islamic Boarding School. This study used quantitative methods with comparative descriptive approach. The samples in this study were amounted 429 students that consisted of 219 students of Public Senior High School 3 Padang Panjang, and 210 students of Islamic Boarding School of Sumatra Thawalib Parabek, Bukittinggi. The samples were selected by using the Proposional Random Sampling technique.The instrument used was Instrument of the Achievement of Student Developmental Task (IKTPS), with reliability of 0.925. In testing the differences between independent variable and dependent variable were analyzed by t-test.  The findings of study showed there were differences of the achievement of student developmental task with different backgrounds between Senior High School and Islamic Boarding School, which is student in Senior High School have higher levels of their developmental task achievement than student in Islamic Boarding School.
Contribution of Parents' Support to Adolescent Attitudes About Free Sex Behavior
Authors: Satriana Nala , Nirwana Herman , Syahniar Syahniar
Published: December 2021

Free sex in Indonesia from time to time is very worrying. Teenagers think free sex is a normal and normal thing to do. Adolescent attitudes affect the behavior carried out. This study reveals the contribution of parental support to adolescent attitudes about free sex behavior. This research uses the correlational method and data collected from a sample of 235 students, which were found using proportional random sampling techniques. Data were collected using a parental support scale (32 valid items, = 0.873), and a scale of adolescent attitudes about free sex (22 valid items = 0.885). Data were then analyzed using multiple regression. The results show that parental support contributed 17.9% to adolescent attitudes about free sex behavior. It can be concluded that the higher the parental support, the adolescent’s items, about free sex will be more negative.
Contribution of Emotional Intelligence and Parental Social Support in Student Learning Achievement
Authors: Hadi Irsal , Netrawati Netrawati
Published: December 2021

This study aims to analyze (1) learning achievement, emotional intelligence and social support of parents, (2) the contribution of emotional intelligence and social support both individually and collectively to student achievement behavior. This research uses descriptive quantitative method. The study population was 436 students of SMK Country 3 Padang. The research sample was 209 students who were selected by purposive sampling technique. The instrument uses a scale of emotional intelligence, and social support from parents and the results of the students' mid-semester value recap. The research data were analyzed using descriptive statistics, simple regression, multiple regression. The results of the study proved that: (1) emotional intelligence contributed 31.5% to student achievement, (2) parents' social support contributed 27.6% to student achievement, (3) emotional intelligence, shared parent social support contributed on student achievement as much as 33.4%. The implication of the results of this study can be used as input for making guidance and counseling service programs in improving student learning achievement.
The relationship of interest in majors and confidence with students' career planning
Authors: Ningsih Fitri , Daharnis Daharnis
Published: December 2021

One of the factors that influence career planning is interest in majors and self-confidence. This study aims to analyze the relationship between interest in majors and self-confidence with career planning. Methods This research uses a descriptive correlational quantitative method. The research population was the XI grade students of SMK Negeri 3 Padang as many as 246 students and the research sample amounted to 153 students. Sampling using proportional random sampling technique. The instrument used is a Likert Scale model. The research data were analyzed by simple regression and multiple regression. The results of this study indicate that, in general, interest in majors is in the high category, self-confidence is in the high category, student career planning is in the high category, there is a significant relationship between interest in majors and student career planning, there is a significant relationship between trust There is a significant relationship between interest in majors and self-confidence with students' career planning.
أثر استخدام تكنولوجيا سلسلة السجلات الرقمية "البلوك تشين" على بيئة المعاملات المحاسبية
Authors: Abu Arab Heba H.M. , Rashwan Abed El Rahman M.
Published: December 2021

هدفت الدراسة إلى التعرف على أثر استخدام تكنولوجيا سلسلة السجلات الرقمية "البلوك تشين" على بيئة المعاملات المحاسبية، اعتمدت الدراسة على المنهج الوصفي التحليلي، وتم استخدام الاستبانة كأداة للدراسة، وتوصلت الدراسة لمجموعة من النتائج أهمها، أن استخدام تكنولوجيا سلسة السجلات الرقمية "البلوك تشين" في البنوك المدرجة في بورصة فلسطين سيتم من خلاله المعالجة والاحتفاظ بسجلات للعمليات المالية دائمة في دفتر أستاذ عام لا مركزي موزع قادر على تخزين وتأكيد العمليات التي تمر عبره.، وأوصت الدراسة العمل على استخدام تكنولوجيا سلسلة السجلات الرقمية "البلوك تشين" التي تعتمد على استبدال طريقة المحاسبة وفقاً للقيد المزدوج في المعالجة المحاسبية للمعاملات المالية، حيث يتم إجراء المعاملات المالية والسجلات الرقمية ويخزن البيانات المالية في كتل محمية بالتشفير والتي يتم التحقق من سلامتها باستمرار
Simulation of Moving Target Indication Radar System Based on VisSim/Comm Application
Authors: QasMarrogy Ghassan A. , Ahmad Husham J.
Published: December 2021

Moving target indication (MTI) is mainly designed to detect moving targets and while unmoving targets are filtered out. It focuses on the technique of the modern stationary target indication (STI), by using directly the signal details to determine the reflecting object’s mechanical properties, after that it becomes easier to find moving or non-moving targets. This paper presents the simulation design of the MTI radar system. The main purpose of this design is to help students in understanding the radar system subject and help teachers to explain this subject in a simpler approach. Both students and teachers need to know how the signals inside the MTI radar processor are working and how they are generated and related to each other. This paper introduces a method of simulation of MTI radar signals including, A-scope radar display, transmitted and returned radar pulses with constant and multiple PRF, n-delay line cancellers.
Automatic Classification of Covid-19 Chest X-Ray Images Using Local Binary Pattern and Binary Particle Swarm Optimization for Feature Selection
Authors: Mohammed Bazhdar N. , Al-Mukhtar Firas H. , Yousif Raghad Z. , Almashhadani Yazen S.
Published: December 2021

Novel Coronavirus disease 2019 (COVID-19) is a type of pandemic viruses that cause respiratory tract infection in humans. The clinical imaging of Chest X-Ray (CXR) by Computer Aided Diagnosis (CAD) plays an important role to identify the patients who infected by COVID-19. The objective of this paper presents a Computer Aided Diagnosis (CAD) method for automatically classify 110 frontal CXR images of contagious people according to Normal and COVID-19 infection. The proposed method contains of four phases: image enhancement, feature extraction, feature selection and classification. Gaussian filter is performed to de-noise the images and Adaptive Histogram Equalization (AHE) for image enhancement in pre-processing step for better decision-making process. Local Binary Pattern (LBP) features set are extracted from the dataset. Binary Particle Swarm Optimization (BPSO) is considered to select the clinically relevant features and developing the robust model. The successive features are fed to Support Vector Machine (SVM) and K-Nearest Neighbor (KNN) classifiers. The experimental results show that the system robustness in classification COVID-19 from Normal images with average accuracy 94.6%, sensitivity 96.2% and specificity 93%.
A Comparison between Brown’s and Holt’s Double Exponential Smoothing for Forecasting Applied Generation Electrical Energies in Kurdistan Region
Authors: Omer Ameera W. , Blbas Hazhar T. A. , Kadir Dler H.
Published: December 2021

The process of producing electricity from sources of energy is known as electricity production. Electric also isn't freely accessible in environment, thus it should be "manufactured" (i.e., converting another kinds of energy to electrical energy) by utilities with in electricity industry (transportation, distributing, and so on).Moreover, the objective of this study is to compared of Brown’s as well as Holt’s Double Exponential Smoothing also build a best forecasting time series model among two smoothing model forecasting, as well as focuses on optimizing characteristics to use the golden section technique.  This exponential smoothing approach has been one of the time series forecasting methods that would be used to forecast (Generation Electrical) with in Kurdistan area. The issue that arises with this technique is determining the appropriate parameters to reduce predict inaccuracy. In addition, Data used in this paper are (Generation Electrical) in Kurdistan region for (132) months from 2010 to 2020. The study revealed that such data is trending modeled, indicating that a double exponential smoothing (DES) approach from Brown & Holt can be used with the (Stratigraphic & Minitab) software. There are the same results but the Result of analysis more depend on the R-program. The difference among the forecast findings acquired with optimum parameters as well as the assaying data was utilized to assess the feasibility of the forecast by completing normality and randomness tests. Ultimately, the outcomes of parameterization show that the optimal value of α that in DES Brown is (0.22) as well as the optimal MAPE is 9.23616 percent, whereas in DES Holt the optimal is (0.95) as well as the optimal β is (0.05) via the optimal MAPE of 8.08586 percent. This MAPE of a DES Brown technique is greater than the MAPE of a DES Holt approach. Feasibility experiments revealed that both approaches are capable of predicting. Depending on the value of MAPE as well as evaluation process, DES Holt's was recognized as the main prediction model.
Natural mouthwash of sarang banua leaves (Clerodendrum fragrans Vent Willd) extractas a healthy solution during the covid-19 pandemic
Authors:   Department of Chemistry, Universitas Negeri Medan, Medan 20221, Indonesia, Nababan Julianse Lydia , Manalu Titin Evania ,   Department of Chemistry, Universitas Negeri Medan, Medan 20221, Indonesia, Aulia Ratu Nurul ,   Department of Biology, Universitas Negeri Medan, Medan 20221, Indonesia, Lestari Anna ,   Accounting Study Program, Universitas Negeri Medan, Medan 20221, Indonesia, Malau Angga Koswara ,   Informatics and Computer Technology Education Study Program, Universitas Negeri Medan, Medan 20221, Indonesia, Simorangkir Murniaty ,   Department of Chemistry, Universitas Negeri Medan, Medan 20221, Indonesia
Published: December 2021

The spread of the COVID-19 virus has shaken the world. The application of Clean and Healthy Living Behavior (CHLB) is the best effort to prevent the transmission of the Covid-19 virus. Maintaining oral and dental hygiene can improve health, especially during the COVID-19 pandemic. Sarang Banua (Clerodendrum fragrans Vent Willd) is a local plant of North Sumatra, containing secondary metabolites of alkaloids, steroids, flavonoids, triterpenoids, saponins, tannins, and quinones that have bioactivity such as antibacterial and antioxidant. The preparation of Sarang Banua mouthwash (SABANA) made from the extract of the sarang banua leaves with a concentration of 0.5 grams in 100 ml of preparation (0.5%) has been formulated, evaluated by organoleptic, pH and antibacterial test. The results of organoleptic and pH tests showed that SABANA mouthwash preparations were brown and slightly cloudy, tasted very distinctive, fresh, and eliminated bad breath with a pH of 7 in accordance with quality standards. About 70% of the panelists stated that they really liked the color, aroma, taste and appearance of SABANA mouthwash preparations. The results of antibacterial test against the oral bacteria Streptococcus mutans ATCC (25175) showed that 0.5% and 0.75% of the oral antibacterial mouthwash was found to be effective as oral antibacterial with an average inhibition zone diameter of 16.55 and 16.9 mm. Through the activities of the Student Creativity-Entrepreneurship Program, SABANA mouthwash have been produced and marketed in the local as well as outside the city by online and offline-shop and have the opportunity to develop into a new entrepreneur.
PENGARUH KEPUASAN KERJA DAN KOMITMEN ORGANISASI TERHADAP KINERJA KARYAWAN PADA PT. POS LANGSA
Authors: Hisan Khairatun , Zikriani Zikriani , Hamid Abdul
Published: December 2021

Penelitian ini bertujuan untuk mengetahui pengaruh kepuasan kerja dan komitmen organisasi terhadap kinerja karyawan pada PT. Pos Langsa. Sampel dalam penelitian ini berjumlah 23 orang. Metode analisis data yang digunakan yaitu analisis regresi linier berganda, uji t, uji F, dan analisis koefisien determinasi. Persamaan regresi yang diperoleh dalam penelitian ini yaitu Y = 3,125 + 0,512X1 + 0,166X2. Kepuasan kerja berpengaruh positif dan signifikan terhadap kinerja karyawan pada PT. Pos Langsa. Komitmen organisasi berpengaruh positif dan signifikan terhadap kinerja karyawan pada PT. Pos Langsa. Kepuasan kerja dan komitmen organisasi secara simultan berpengaruh signifikan terhadap kinerja karyawan pada PT. Pos Langsa. Kepuasan kerja dan komitmen organisasi mempengaruhi kinerja karyawan pada PT. Pos Langsa sebesar 62,5%, sedangkan sisanya 37,5% dipengaruhi oleh variabel lain di luar model penelitian ini.
PENGARUH JIWA KEWIRAUSAHAAN DAN PENGGUNAAN MEDIA SOSIAL TERHADAP MINAT BERWIRAUSAHA MAHASISWA PENDIDIKAN BISNIS STAMBUK 2017 FAKULTAS EKONOMI UNIVERSITAS NEGERI MEDAN
Authors: Irwansyah Irwansyah , Sirait Laedy Nova Sartika
Published: December 2021

Penelitian ini bertujuan untuk mengetahui seberapa besar pengaruh jiwa kewirausahaan dan penggunaan media sosial terhadap minat berwirausaha mahasiswa pendidikan bisnis Universitas Negeri Medan stambuk 2017. Teknik pengumpulan data yang dilakukan dengan cara test dan angket. Hasil analisisregresi berganda diperoleh persamaan Y = 6.792 + 0,276 X1 + 0,647 X2 + e. Selanjutnya koefisien determinasi (R2) 0,543 yang artinya adalah sebesar 54,3%variabel X1 dan X2 dapat menjelaskan minat berwirausaha mahasiswa (Y) dan sisanya sebesar 45,7% dijelaskan oleh variabel lainnya yang tidak di kaji dalampenelitian ini. Berdasarkan uji t diperoleh bahwa masing-masing variabel X1 terdapat pengaruh positif dan signifikan terhadap minat berwirausaha mahasiswa(Y)       dengan nilai thitung >ttabel (2,271 >1,662) dan ada pengaruh positif dan signifikan antara variabel X2 terhadap hasil terhadap minat berwirausaha mahasiswa (Y) dengan nilai thitung>ttabel (7,257 >1,662). Sedangkan uji F diperoleh hasil bahwa ada pengaruh positif dan signifikan antara Jiwa Kewirausahaan (X1) dan Penggunaan Media Sosial (X2) terhadap  Minat Berwirausaha Mahasiswa (Y)Pendidikan Bisnis 2017 dengan nilai Fhitung>Ftabel (51,135>3,10) dan nilai signifikansi (0,000<0,05).
Utilization of Remote Sensing and GIS For The Calculation of Eucalypthus Productivity at BKPH Sukun
Authors: Waahidati Lutfi Ailuul , Budiyanto Eko
Published: December 2021

The Sukun Forest Management Unit (BKPH) is the manager of both protection and production forest, which includes eucalyptus trees covering an area of 3,701 ha. One of the efforts to optimize eucalyptus production is to estimate the productivity of eucalyptus. Advances in remote sensing technology and geographic information systems (GIS) can provide fast and accurate specific data to be able to estimate the production of eucalyptus leaves. The purpose of this research is to build a model for calculating eucalyptus production based on remote sensing data and to estimate the amount of eucalyptus production by applying remote sensing data. This research uses remote sensing and geographic information system (GIS) with Soil Adjusted Vegetation Index (SAVI) and the number of trees of eucalyptus as parameters to analyze the productivity of eucalyptus leaves. The results showed that the spectral value of SAVI and the number of trees were able to explain the yield of eucalyptus leaves with an accuracy of 98%. Estimation of eucalyptus production can be done through multiple linear regression models between the variable number of trees and the SAVI spectral value. The result showed an accuracy of 78% with the equation y = 0.405 + 1.190x1 + 0.001x2 and the Standard Error of Estimate are 0.052. The highest production estimate is 1.239 tonnes/pixel, while the lowest estimate is 0.633 tonnes/pixel.
FACTORS INFLUENCING THE GROWTH OF CRAFT BUSINESS IN BOGOR CITY
Authors: Murwindarti Arini
Published: December 2021

Bogor City has been the tourist destination for a long time, making this sector as the leading sector for the city. Tourism activities in Bogor City encourage the growth of creative industry especially craft business that reap the benefit through direct sales to the tourists as souvenirs. Many argue that unlike other industry in the economy, there are factors that influence the growth of creative industry beside factors of production. This study aims to identify factors that are significantly influencing the growth of craft business in Bogor City. Multiple regression analysis was used to analyze data collected through interviews with 35 owners of craft business which randomly selected from the sample framework. The data obtained including (1) number of workers, (2) capital, (3) raw materials, (4) showroom ownership, (5) participation in exhibitions, (6) business permit ownership, (7) market orientation, and (8) production quantity. The first three data correspond with factors of production in classical economy, while the rest are related to the characteristics of creative-cultural industry. The result shows that none of the variables related to the classical economy factors of production are statistically significant in this model, instead the variables that are related to characteristics of creative-cultural industry are significant. Among other significant variables, participation in exhibition is the most significant variable in affecting the growth of craft business in Bogor City.
Public Housing Environment and Depression: Case Study Bandar Baru Sentul
Authors: Ghazali Nur Masyitah , Marzukhi Marlyana Azyyati , Ling Oliver Hoon Leh , Weng Yinxue
Published: December 2021

Depression is one of the common mental health problems worldwide, and in Malaysia, it is mostly from low-income groups. Due to this factor, most low-income groups in urban areas will reside in public housing due to high living costs. This study aims to understand the public housing environment's effect on mental health. The objectives are to study and analyses states of depression in public housing and its relationship with the surrounding built environment. This study was conducted at the Federal Territory of Kuala Lumpur, Malaysia. The questionnaire is an adaptation of Depression, Anxiety and Stress Scales (DASS-21). The sampling technique using homogenous sampling in the selected case study area. The selected area is based on several characteristics, which are housing typologies, green areas, and density. The collected data were analysed using correlation analysis and compared with the theoretical framework to study the relationship between the surrounding environment and depression. The results have shown that public housing's surrounding built environment is associated with depressive symptoms and mental health wellbeing. The findings also show that the surrounding built environment may contribute to mental health wellbeing and worsen existing sufferers' condition.

Keywords: built environment; urban; depression; mental health
Sustainable Material Awareness, Belief and Readiness in Housing Development
Authors: Vu Kim Dung Thi , Nguyen Bao Ngoc
Published: December 2021

The construction industry is one of the industries accounting for a large proportion of Vietnam's overall GDP. It is also one of the least sustainable industries with extensive use of non-renewable resources. A study on the current situation of occupational awareness of sustainable building materials, identifying factors that prevent the diffusion of sustainable building materials is critical. The present study raised the theoretical basis of using sustainable building materials for the construction industry. Questionnaire data from 130 valid responses were used to carry out statistical analysis and make interpretation of results. The results indicate no significant difference between the two groups of respondents in awareness, belief, and readiness towards sustainable materials. The awareness and readiness levels are higher among construction practitioners who have experience. The present findings might suggest several courses of action to solve the problem of sustainable materials being overlooked. Our research suggests that it is essential for policymakers to encourage stakeholders to consider sustainability more seriously. The research findings have profound managerial implications that experienced practitioners might significantly impact the decision-making process in the realm of sustainable orientation. Future work should concentrate on integrating sustainable building materials into innovative and transformative practices in the construction industry.

Keywords: sustainable materials; awareness; belief; readiness; Vietnam; construction industry
Integration of Safety Aspects in the Maintenance Work of a Living Wall: An Overview of Practice and Challenges
Authors: Jun Han Loo , Zainul Abidin Nazirah
Published: December 2021

Building maintenance is crucial to prolong a building's lifespan. Conducting the maintenance work can be dangerous, especially if it involves high-rise areas such as walls and roofs. Most literature discusses safety aspects at the construction site, while the safety aspects of maintenance work, which occur after occupancy, received less attention. This paper discusses the potential of integrating safety aspects into the maintenance work of a living wall. Living wall system (LWS) is one of the green design aspects in which the wall is designed to allow for vegetation growth. Maintenance works of a living wall involve various risks especially working in high or difficult places. This paper reviews the maintenance process and techniques adapted for maintaining the living wall through literature.  This paper presents the safety practices that have the potential to reduce the risks of conducting maintenance work on the living wall and its potential challenges. It is hoped that this paper raises further awareness that work safety in construction is not only enclosed within the construction site and its vicinity, but safety should also be considered post-occupation, especially when the design demands specific maintenance requirements such as a living wall.

Keywords: Safety, building maintenance, living wall, maintenance risk, green wall
Antibacterial Activity of Parijoto (Medinilla speciosa Blume) Fruit Against Serratia marcescens and Staphylococcus aureus
Authors: Milanda Tiana , Lestari Keri , Tarina Nimas T. I.
Published: December 2021

Parijoto (Medinilla speciosa Blume) is a plant found in Mount Muria, Kudus, Central Java. The local community often uses its fruit to treat various diseases, as well as antibacterial, anti-inflammatory, antioxidant, and anti-cancer. This study aimed to determine the antibacterial activity of n-hexane, ethyl acetate and methanol extract from parijoto fruit against Staphyococcus aureus ATCC 29213 and Serratia marcescens clinical isolates. Gradual maceration of simplicial and antibacterial activity testing of the extracts was performed, followed by determining the Minimum Inhibitory Concentration (MIC), Minimum Bactericidal Concentration (MBC) and comparative antibacterial activity most active extract against ampicillin and cefadroxil. The results showed that all extracts exhibited activity against S. aureus ATCC 29213, but only ethyl acetate and methanol extracts had activity against S. marcescens clinical isolates. The highest antibacterial activity was shown by the methanol extract, which was more effective against S. aureus ATCC 29213, having the largest inhibition diameter and lowest MIC and MBC values (6.25 and 12.5 mg/mL). The comparative analysis indicated that the methanol extract demonstrated lower antibacterial activity against S. aureus ATCC 29213 than cefadroxil (72,511: 1). This antibacterial activity is presumed to be generated from alkaloids, polyphenols, tannins, flavonoids, quinones and saponina in the extract.Keywords: Amoxicillin, Cefadroxil, MIC, MBC
Aplicación del formalismo de Lagrangianos Controlados en la regulación de velocidad del motor de inducción trifásico
Authors:   , González Acosta Yaima
Published: December 2021

In this work the Controlled Lagrangian Formalism applied to electrical machines is explored for the first time. It begins with an analysis of the purely mechanical systems, once understood, the study is carried out on a two-phase induction motor, this implying a greater degree of complexity because there is no reference that has done it before. Finally, this study is expanded to the three-phase motor, this being the main research object of the project. The main guide used was the Bloch article cite bloch2000controlled on the analysis of mechanical systems. Regarding the procedure, the first thing that is done is the selection of the generalized coordinates, the Lagrangian is proposed and the model is obtained from it through the Euler-Lagrange equations, followed by that the symmetries are identified (which in the case of MI is especially interesting because these symmetries are obvious from the choice of coordinates) and the configuration space is divided into vertical and horizontal directions, the horizontal directions are redefined and the Controlled Lagrangian is proposed. Finally, generalized forces are sought, using Noether's Theorem as support and thus establishing the control law. The development to obtain the Controlled Lagrangian and the control law is done in detail, explaining each step of the procedure and using specific algebraic methods of this formalism that are strongly based on the geometric structure of the variety of configuration. The results obtained are an approach in the direction of Controlled Lagrangians applied electrical machines.
Price Analysis and Forecasting for Bitcoin Using Auto Regressive Integrated Moving Average Model
Authors: Darley Olufunke G. , Yussuff Abayomi I. O. , Adenowo Adetokunbo A.
Published: December 2021

This paper investigated Bitcoin daily closing price using time series approach to predict future values for financial managers and investors. Daily data were sourced from CoinDesk, with Bitcoin Price Index (BPI) for 5 years (January 1, 2016 to May 31, 2021) extracted. Data analysis and modelling of price trend using Autoregressive Integrated Moving Average (ARIMA) model was carried out, and a suitable model for forecasting was proposed. Results showed that ARIMA(6,1,12) model was the most suitable based on a combination of number of significant coefficients and values of volatility, Akaike Information Criterion (AIC) and Bayesian Information Criterion (BIC). A two-month test window was used for forecasting and prediction. Results showed a decline in prediction accuracy as number of days of the test period increased; from 99.94% for the first 7 days, to 99.59 % for 14 days and 95.84% for 30 days. For the two-month test period, percentage accuracy was 84.75%. The study confirms that the ARIMA model is a veritable planning tool for financial managers, investors and other stakeholders; especially for short-term forecasting. It is however imperative that the influence of external factors, such as investors’/influencers’ comments and government intervention, that may affect forecasting be taken into consideration.
Performance Evaluation of Solar Air Collector by Chimney Effect for Drying Applications
Authors: Gebremicheal Gedion Habtay , Buzas Janos , Farkas István
Published: December 2021

Solar air collector is one of the main components of a solar dryer unit, which supplies the conditioned air for processing the perishable edible items. Various techniques have been employed to improve the thermal efficiency of the collector system, such as extended surfaces, packed beds, artificial roughness, etc., however, the cost of construction is higher. Therefore, this study was focussed on the collector efficiency enhancement using a chimney without applying the aforementioned. A single-pass solar air collector coupled with drying chamber and chimney was utilized for the experiments. The experiments were conducted in September. The average values of the solar radiation intensity, ambient temperature, temperatures inside the dryer, collector efficiency were graphically presented. The experimental data reported the maximum values of the outlet temperatures for the solar air collector with and without a chimney to be 52.8 °C and 57 °C, respectively. The collector thermal efficiency with and without the chimney was found to vary from 29.6% to 64.8% and from 26.9% to 44.8%, respectively. Furthermore, it was noticed that, with the chimney, the temperature inside the dryer showed uniform tendency.
The Control Reversing Algorithm for Autonomous Vehicles with PSD-Controlled Trailers
Authors: Cviklovič Vladimír , Srnánek Rastislav , Hrubý Dušan , Harničárová Marta
Published: December 2021

Driving a vehicle with a passive trailer has been the subject of numerous studies. Current control strategies are mostly used by differential geometry, linear algebra, fuzzy regulators, and artificial neural networks. The objective of this study is to design an algorithm for autonomous control of the tractor-trailer system reversing based on an algorithm using a PSD controller and to verify it on a simulated mathematical model. All parameters listed in the models and experiments are performed based on the existing tractor-trailer system. Dynamic models of steering and velocity control were identified and incorporated into the simulation. Result includes a stable operation of the steering without oscillating. The proposed algorithm can be implemented in microcontrollers without the need for high computing power.