bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of Audit Opinion, Audit Tenure and Office of Public Accountant (OPA) size on Stock Price (Study of Properties & Real Estate Companies listed on the IDX)
Authors: Khaerunnisa Indar , Amrulloh Amrulloh
Published: June 2023

During the Covid-19 Pandemic, investment is increasingly becoming the public's choice to support financial health. This research provides information and an overview of the three variables that are taken into consideration by investors when deciding to invest in the capital market, which in turn will also have an influence on the increase and decrease in stock prices in the capital market. This research aims to see whether there is an effect of audit opinion, audit tenure and Office of Public Accountant (OPA) size on stock prices both partially and simultaneously. This research uses quantitative methods and uses a descriptive analysis approach. With a population of property and real estate companies listed on the Indonesia Stock Exchange (IDX) in 2019-2021. This research sample withdrawal technique used purposive sampling technique and a sample of 30 companies was selected. The conclusion of this research shows that audit opinion and Audit Tenure have no significant effect on stock prices partially, but the OPA size variable displays the results of a significant effect on stock prices. Simultaneously, audit opinion, Audit Tenure, and OPA size have a significant effect on stock prices with a coefficient of determination of 29.7%
The Role of Green Accounting Through the Implementation of Carbon Taxes as an Instrument for Climate Change Mitigation in Indonesia
Authors: Bambang Ahmad Indarto  , Ani Dwi Ari
Published: June 2023

This study aims to analyze the application of green accounting and carbon tax in the context of climate change in Indonesia. The integration of green accounting with carbon taxes is a relevant instrument for reducing greenhouse gas emissions and encouraging companies to shift to cleaner energy sources. The research method is an analysis of the literature related to green accounting and carbon tax in Indonesia. Data and literature were collected to identify green accounting practices in Indonesia, their potential and impact on financial and environmental performance. The results show that several companies have adopted green accounting practices, such as measuring carbon emissions and reporting environmental performance. However, wider and consistent implementation is needed across all sectors. Carbon tax policies in Indonesia are also still in the development stage, with some sectors already subject to carbon taxes. However, there is a need to strengthen the policy framework, including increased clarity on carbon tax rates and the use of revenues from these taxes to support environmental projects. It can be concluded that the application of green accounting and carbon tax in Indonesia is still in its early stages, with several efforts that have been made.

Keywords: Climate Change, Carbon Tax, Green Accounting
Exploring the Relationship Between Circadian Rhythm Shifts and Postpartum Depression
Authors: Yeom Ji Won , Lee Heon-Jeong
Published: June 2023

This review paper explores the relationship between circadian rhythm and postpartum depression (PPD). Postpartum depression is a prevalent and debilitating mood disorder that affects a significant number of women after childbirth. Emerging evidence suggests that disruptions in circadian rhythm may contribute to the development of PPD. This paper provides an overview of the current understanding of circadian rhythm disturbances in the postpartum period, their potential impact on PPD, and the underlying mechanisms involved. Additionally, therapeutic approaches targeting circadian disruptions in the prevention and treatment of PPD are discussed. Further research in this field has the potential to provide novel insights and interventions for the management of PPD.
Editorial: E quem avalia o Qualis Periódicos?
Authors: Dal Soglio Fabio Kessler , Donozzolo Joel
Published: June 2023

Conclamamos toda a comunidade que promove a Ciência da Agroecologia, para, de forma qualificada e visando realizar uma ciência sistêmica, contribuam com a Revista Brasileira de Agroecologia, submetendo seus artigos, participando como avaliadores ou atuando junto à Comissão Editorial da revista. Estamos decididos a seguir crescendo e ir além dos limites que são impostos pela CAPES e o seu Qualis-Periódicos. Nosso objetivo é servir de meio de comunicação científica internacional da Ciência da Agroecologia. Para isso contamos que os PPGs que atuam em Agroecologia e em áreas afins. No final das contas, o que importa é publicar qualidade e defender os princípios de uma Ciência aberta, cidadã e que não tem medo de conquistar seu espaço. E, se o Qualis Periódico errou na nossa classificação, a Agroecologia brasileira precisa fazer mais, e melhor, para mudar isso.
Avances en el uso de marcadores bioquímicos y moleculares para el diagnóstico de pancreatitis aguda: revisión bibliográfica
Authors: Rodríguez Barragán Deyaneyra Mishell , Tabares Rosero Lourdes Gioconda
Published: June 2023

Introducción: La pancreatitis aguda es una inflamación del páncreas provocada por la activación de sus enzimas, esta patología presenta varias etiologías donde las principales son: obstrucción biliar, alcoholismo e hipertrigliceridemia. El cuadro diagnóstico se basa en 3 criterios puntuales: dolor intenso de epigastrio, niveles séricos de amilasa/lipasa superior a 3 veces su límite normal y pruebas de imagen compatibles con pancreatitis aguda. Los marcadores bioquímicos amilasa, lipasa sérica, amilasa urinaria y tripsinógeno-2 urinario ayudan al diagnóstico, pues cada uno de ellos brindan información valiosa que contribuye a poseer una visión clara de la patología. Hasta el momento no se ha encontrado un marcador molecular que contribuya significativamente a la evaluación del paciente, considerando además para un diagnóstico correcto es necesario la utilización de estudios de imagen. Objetivo: Describir los marcadores bioquímicos y moleculares para el diagnóstico de pancreatitis aguda. Metodología: Estudio documental, descriptivo y retrospectivo de estudios vigentes actualizados. Conclusión: La pancreatitis aguda si no es diagnosticada y tratada a tiempo puede conducir a inflamación sistémica y muerte. Los mejores marcadores bioquímicos para el diagnóstico son la amilasa y lipasa séricas puesto que presentan alta sensibilidad y especificidad. Para un diagnóstico correcto es necesario correlacionar los niveles séricos de amilasa y lipasa con los síntomas, especialmente el dolor intenso en el epigastrio y obligatoriamente con pruebas de imagen. Área de estudio general: Salud. Área de estudio específica: Laboratorio Clínico. Tipo de estudio:  Artículo de revisión bibliográfica.
Đề xuất mô hình các nhân tố ảnh hưởng đến vận dụng kế toán trách nhiệm cho các doanh nghiệp sản xuất ở Vùng kinh tế trọng điểm phía Nam Việt Nam
Authors: Bùi Thị Trúc Quy , Nguyễn Thị Diện
Published: June 2023

Để vận dụng kế toán trách nhiệm vào trong công tác quản lý tại các doanh nghiệp sản xuất ở vùng kinh tế trọng điểm phía nam Việt Nam hiệu quả thì cần phải nghiên cứu các nhân tố tác động để giúp các doanh nghiệp sản xuất khu vực này có cơ sở để vận dụng kế toán trách nhiệm thật sự đầy đủ hơn, điều này đáp ứng được các yêu cầu của thực tiễn, phù hợp với xu thế hiện nay. Sử dụng phương pháp nghiên cứu định tính, bài viết đề xuất mô hình các nhân tố ảnh hưởng đến việc vận dụng kế toán trách nhiệm trong các doanh nghiệp sản xuất ở vùng kinh tế trọng điểm phía nam Việt Nam. Mô hình được kế thừa từ các nghiên cứu trước bao gồm: cơ cấu tổ chức, nhận thức người quản lý, trình độ nhân viên kế toán, văn hóa doanh nghiệp, hệ thống khen thưởng và một nhân tố mới được đề xuất là nhân tố công nghệ. Từ đó, nghiên cứu đưa ra hàm ý một vài chính sách để vận dụng kế toán trách nhiệm cho các các doanh nghiệp sản xuất ở vùng kinh tế trọng điểm phía nam Việt Nam và cho các cơ quan quản lý nhà nước.
Kulttuurihistoriallisen toiminnan teorian tarjoamat haasteet ja mahdollisuudet Suomen kasvatustieteellisessä tutkimuksessa
Authors: Engeström Yrjö , Virkkunen Jaakko
Published: June 2023

Tässä artikkelissa analysoimme, millaisia kynnyskäsitteitä voidaan erottaa kasvatustieteisiin kiinnittyvän kulttuurihistoriallisen toiminnan teorian kehittymisessä Suomessa ja millaisia haasteita nämä käsitteet merkitsevät kasvatustieteille. Löydetyt kahdeksan kynnyskäsitettä ovat oppimistoiminta, toimintajärjestelmä, ekspansiivinen oppiminen, Muutoslaboratorio, kehittävä siirtovaikutus, toimintakonsepti, muutostoimijuus sekä kohtalokas kohde ja toimeksipantu utopia. Kynnyskäsitteiden analyysin pohjalta hahmottelemme artikkelissa kolme kulttuurihistoriallisen toiminnan teorian läpikäyvää dialektista periaatetta: historiallisuus, tutkimus mahdollisuuksien avaajana ja kehittävät interventiot metodologisena perustana. Nämä periaatteet voidaan nähdä mahdollisuuksina vahvistaa kasvatustieteellisen tutkimuksen vaikuttavuutta 2020-luvulla.
Tutkijoiden monet roolit Muutoslaboratoriossa
Authors: Sannino Annalisa
Published: June 2023

Artikkeli käsittelee ekspansiivista oppimisponnistusta asunnottomien tai asunnottomuusvaarassa olleiden nuorten tuetun asumisen yksikössä. Toiminnan teoriaan nojautuvien tutkijoiden tiimi toteutti yhdessä asumisyksikön henkilökunnan kanssa intervention, jolla tuettiin muutosta valvonnan ja pelon kulttuurista avoimen vuorovaikutuksen ja ohjauksen kulttuuriin. Tutkimuksen kohteena ovat monet roolit, joita tutkijat ottavat pyrkiessään ruokkimaan ekspansiivisen oppimisen vaatimia tekoja eli vallitsevan käytännön kyseenalaistamista, yksikön toiminnan siihenastisen kehityksen analysointia, uuden toimintatavan mallittamista, mallin tutkimista ja koettelua, uuden mallin toimeenpanemista, oppimisprosessin arviointia sekä uuden toimintatavan vakiinnuttamista. Tutkimus rikastaa interventiotutkimusta koskevaa kirjallisuutta esittämällä kattavan analyysin erilaisista rooleista, joita tutkijat voivat ottaa Muutoslaboratorion eri vaiheissa. Hyödyntäen kasvatustieteellisiä interventioita ja Muutoslaboratoriota koskevaa aiempaa tutkimusta artikkeli tuottaa interventiotutkijan roolien alustavan kirjon ja tunnistaa eri roolien avainpiirteitä. Artikkeli antaa interventiotutkijoille välineitä toimintansa suunnitteluun ja arviointiin sekä edesauttaa interventiomenetelmien vertailua ja systemaattista kehittämistä.
Perkembangan UMKM Di Indonesia : Peran Pemahaman Akuntansi, Teknologi Informasi dan Sistem Informasi Akuntansi
Authors: Fitriani Fitriani Saragih , Harahap Rahmat Daim , Nurlaila Nurlaila
Published: June 2023

This study aims to determine the development of MSMEs in Indonesia which is influenced by several factors including the role of understanding accounting, information technology, and information systems. The sampling technique used a census technique with a total of 100 respondents who were randomly selected. The analytical test tool used is SmartPLS v.3.2.9 with the SEM (Structural Equation Modeling) analysis method. This analysis is a statistical testing technique to describe the simultaneous linear relationship between indicator variables and variables that cannot be measured directly. This research method uses a quantitative approach with explanatory research with measurement models of Convergent Validity, Discriminant validity, Composite reliability, Alpha Cronbach indicators, and statistical hypothesis testing. The results of this study indicate that the P-Values are 0.000 <0.05 so that Accounting Understanding has a positive and significant influence on the development of MSMEs in Indonesia, the P-Values are 0.054 > 0.05 so that the Utilization of Information Technology has no direct and significant influence on The development of MSMEs in Indonesia and the influence of the variable Accounting Information System on the development of MSMEs has a P-Value of 0.001 <0.05 so that the Accounting Information System has a direct and significant effect on the development of MSMEs in Indonesia.
Faktor Kunci Adopsi Fintech dalam Moda Pembayaran Biaya Pendidikan (Studi pada Mahasiswa Politeknik Harapan Bersama)
Authors: Alfian Mohammad , Ferida Arifany , Pratama Arvin Nova Aditya
Published: June 2023

The industrial revolution 4.0 has driven changes in various sectors, including economics. The Covid 19 pandemic has also driven change by way of payment. The use of Fintech by students is one form of that change that occurs in the method of transactions that were previously carried out directly to indirectly. This study examines the determinants of students paying tuition fees using fintech. This study uses PLS analysis with the SmartPLS 3 test tool. The amount of data processed in this study was 171, which method was used in selecting the sample, namely random sampling. Based on the results of statistical tests conducted, it was found that the method of selecting fintech by students in paying tuition fees is influenced by trust, perceived benefits and user privacy and perceived risk of failing to influence it. Furthermore, the trust of students to use fintech in the study of baiaa payments is influenced by users perceptions, risks and privacy.
Kualitas Laba Perusahaan LQ-45 Ditinjau Dari Konservatisme, Investment Opportunity Set, Dan Rasio Pembayaran Dividen
Authors: Asana Gde Herry Sugiarto , Darmita Made Yudi , Dewi Tiara Kusuma , Karmila Gusti Ayu Made
Published: June 2023

This study aims to examine the effect of conservatism, investment opportunity set, and dividend payout ratio on earnings quality in LQ-45 companies on the Indonesia Stock Exchange for the 2019-2020 period. The population in this study are all LQ-45 companies listed on the Indonesia Stock Exchange in the period 2019-2020. The sample in this study was selected by purposive sampling method so that the number of samples in this study were 34 companies. The research method used in this study is quantitative research with data analysis using multiple regression analysis processed with the SPSS 22 statistical program. The conclusions obtained are that the conservatism variable has a significant effect on the earnings quality of LQ-45 companies on the Indonesia Stock Exchange for the 2019-2020 period. The investment opportunity set variable has a significant effect on the earnings quality of LQ-45 companies on the Indonesia Stock Exchange for the 2019-2020 period. The dividend payout ratio variable has a significant effect on the earnings quality of LQ-45 companies on the Indonesia Stock Exchange for the 2019-2020 period.
Pengaruh Kualitas Pelayanan Pajak, Tingkat Pendidikan, Pengetahuan Perpajakan, Sanksi Pajak dan Kesadaran Wajib Pajak terhadap Kepatuhan Wajib Pajak
Authors: Nitasari Adelia , Nurlaela Siti , Siddi Purnama
Published: June 2023

The research aims of it study was to determine how individual taxpayer compliance at KPP Pratama Karanganyar is impacted by a variety of tax service, education level, tax knowledge, tax sanction and taxpayer awareness. Thempopulationmin thismstudymwere 98.936 individualmtaxpayers registeredmat themKPP Pratama Karanganyar. It sampling technical used to proporsional random sampling, calculated using the Slovinmformula in order tomobtainma samplemsize of 100 respondents. Sourcewof data iswprimarywdatawthroughwquestionnaires. In addition, the data analysiswtechniquewusedwmultiple linearwregressionwanalysis. The resultswof this studywindicatewthat the of taxwknowledge, tax sanction and taxpayer awareness has ofwtaxation effectwindividualwtaxpayerwcompliance. Meanwhile, the quality of tax service and the level of education cannot effet on individual taxpayer compliance.
PENGARUH DEBT TO ASSET , RETURN ON ASSET , UKURAN KOMITE AUDIT, UKURAN KAP DAN UKURAN PERUSAHAAN TERHADAP WAKTU PELAPORAN AUDIT PERTAMBANGAN 2019 - 2021
Authors: Tjahyadi Laurenza Jenita , Pangestu Juan Carlos
Published: June 2023

This study aims to examine the effect of Debt To Assets, Return On Assets, Audit Committee Size, KAP Size, and Company Size on Audit Reporting Time. The type of research used in this research is quantitative research. Determination of the sample used in this study using a purposive sampling method based on certain criteria. The samples taken as the object of this study totaled 19 mining companies listed on the Indonesia Stock Exchange (IDX) with an observation period of three (3) years, namely 2019-2021. The data analysis method used in this study uses a multiple linear regression analysis model using the SPSS 24 application. The results of this study indicate that the variables Return On Assets, Audit Committee Size, KAP Size have a significant effect on Audit Reporting Time. Meanwhile, the Debt To Asset and Company Size variables have no significant effect on Audit Reporting Time. Based on the research that has been done, the advice that can be given to future researchers is to expand the factors that influence reporting time such as using Cashflow or changing the type of research to qualitative by interviewing auditors or company management.
Regresi Data Panel untuk Menguji Pertumbuhan Laba Perusahaan Sub Sektor Makanan Minuman di BEI
Authors: Maharani Afgita , Khoiriawati Novi
Published: June 2023

This study examined the effect of Liquidity (Current Ratlo), Solvency (Debt to Asset Ratlo), Activity (Total Asset Turnover), Profitability (Net Proflt Margln), and Investment (Dividend Yield) on Proflt Growth in Sub Sector Companles Food and Beverages llsted on the Indonesla Stock Exchange for the 2018 - 2021 perlod. The research findings suggest that Current Ratlo, DAR, and NPM have a signlficant impact on proflt growth ln the food and beverage lndustry. On the other hand, Total Asset Turnover and Dividend Yield do not have a signiflcant lmpact on proflt growth ln the lndustry. The study employed a panel data regression analysis technique, which ls a statistical method used to examlne the relationshlp between dependent and lndependent variables over time. The research utilized secondary data obtalned from annual flnancial reports of food and beverage companies llsted on the Indonesla Stock Exchange (www.idx.com). The sample for this study was 80 financial report data consisting of the 2018-2021 period, and purposive sampling was used to select the sample. The results of the study suggest that companies in the food and beverage industry can improve their profitability by maintaining high liquidity ratios (Current Ratio) and low debt-to-asset ratios (Debt to Asset Ratio). The findings also suggest that companies can improve their profitability by increasing their net profit margins (NPM). On the other hand, companies do not need to focus on increasing their Total Asset Turnover (TATO) and Dividend Yield (DY) to improve their profit growth ln the food and beverage industry. In conclusion, thls study provides empirical evidence on the factors that influence proflt growth ln the food and beverage lndustry in Indonesia. The findings can be useful for investors, financial analysts, and policymakers who are interested ln the food and beverage industry. Companies ln the industry can use these findings to improve their financial performance and attract more investors.
Pengaruh Etika Profesi dan Independensi Auditor Terhadap Kinerja Auditor dengan Profesionalisme sebagai Variabel Intervening
Authors: Timor Sukma Damayanti , Hanum Zulia
Published: June 2023

Penelitian ini bertujuan untuk menguji dan menganalisis pengaruh Etika Profesi dan Independensi Auditor Terhadap Kinerja Auditor dengan Profesionalisme sebagai variabel intervening. Dalam Penelitian ini penulis menggunakan pendekatan asosiatif, sumber data yang digunakan adalah data primer. Teknik pengumpulan data yang digunakan adalah dengan menyebarkan angket/kuesioner kepada 173 Auditor yang bekerja di Kantor Akuntan Publik di Kota Medan. Teknik sampling yang dugunakan adalah sampling jenuh. Teknik analisis data yang digunakan dalam penelitian ini adalah analisis outer model, analisis inner model dan pengujian hipotesis dengan menggunakan software Partial Least Square (PLS) versi 3.3. Hasil penelitian ini menunjukkan bahwa 1) Etika Profesi tidak berpengaruh signifikan terhadap Kinerja Auditor, 2) Etika Profesi berpengaruh signifikan terhadap Profesionalisme, 3) Independensi Auditor tidak berpengaruh signifikan terhadap Kinerja Auditor, 4)  Independensi Auditor berpengaruh signifikan terhadap Profesionalisme, 5) Profesionalisme berpengaruh signifikan terhadap Kinerja Auditor, 6) Etika Profesi berpengaruh signifikan terhadap Kinerja Auditor melalui Profesionalisme, 7) Independensi Auditor tidak berpengaruh signifikan terhadap Kinerja Auditor melalui Profesionalisme.
Effect ESG on Financial Performance
Authors: Rizqi Muhammad Affan , Munari Munari
Published: June 2023

Studies related to this research topic still have inconsistent results. The research objective was to examine and determine the effect of corporate social responsibility, environmental performance and sustainability report disclosure on financial performance. Manufacturing companies have a sizable contribution to environmental pollution, so the researchers decided that manufacturing companies on the Indonesia Stock Exchange for the 2018-2021 period were the population. This research uses quantitative methods and uses secondary data. Purposive sampling was used as a sampling technique in this study. Companies that fulfill the sample are 10 for 4 years (40). Partial least square is used as a data analysis technique. The results of the study show that corporate social responsibility has a significant positive effect on financial performance, while environmental performance and sustainability reports have an insignificant positive effect.
Gold Price Prediction Using the ARIMA and LSTM Models
Authors: Ferdinandus Yudha Randa Madhika , Kusrini Kusrini , Hidayat Tonny
Published: June 2023

For some investors who are interested in investing for the long term, gold is one of the promising options because the price of gold has recently continued to increase. In the current condition, gold investors generally use instinct and guesswork in investing in gold because there is a benchmark gold price based on world market prices. Many empirical studies identify factors that affect gold prices to forecast them. Factual and econometric analysis recommend different informative factors. This study investigates the influence of gold prices and five supporting variables in the form of economic indicators, namely crude oil price, federal funds effective rate, consumer price index, effective exchange rate and S&P 500 stock market index between 2002 and 2022. Models were built using ARIMA and LSTM methods, evaluated using Root Mean Square Error (RMSE) and Mean Absolute Percent Error (MAPE). With a dataset allocation of 80% for training data and 20% for testing data, the comparison of actual gold prices with the predicted values of each model shows that LSTM has the best performance compared to the ARIMA (0,1,1) model where the LSTM model has an RMSE value of 8.124 and a MAPE value of 0.023. The models also show that economic indicators affect the ounce price of gold.
Development of Augmented Reality Multiple Markers Application Used for Interactive Learning Media
Authors: Pratama Alvonda Rizqi , Sukirman Sukirman
Published: June 2023

Augmented Reality (AR) is a technology that can turn virtual objects in the form of two dimensions (2D) or three dimensions (3D) into an object that looks real, then able to display objects in real-time. Using AR technology, you can visualize learning material into 3D objects to make it easier to understand when using it as a learning medium. This research aims to develop an AR application with multiple marker features that can be used as an interactive learning medium. The method used is Research and Development (R&D), and the development model used is 4D. The evaluation used was the Software Usability Measurement Inventory (SUMI), involving 11th-grade which involved 30 students consisting of 20 male students and 10 female students, the parameters assessed in this evaluation were between others are Efficiency, Affect, Helpfulness, Control, and Learnability. Based on the analysis performed on these parameters, the results show that all five parameters obtain valid and reliable results for each parameter in the validity and reliability tests with a Cronbach's alpha score of 0.934 (Efficiency), 0.868 (Affect), 0.917 (Helpfulness), 0.878 (Control), and 0.919 (Learnability). Thus, this multiple marker-based interactive learning media, Augmented Reality (AR), can be used in learning activities.
A Mathematical Approach to Dampening Sea Waves Using Submerged Permeable Breakwater
Authors: Marpaung J.L. , Tulus Tulus , Gultom Parapat
Published: June 2023

A wave is an energy that can propagate with a medium; the propagation of a wave moves with respect to time by carrying energy that moves with velocity per unit of time. Sea waves are one of the propagating wave problems that are broken down to produce wave propagation with a relatively inhomogeneous minimum amplitude and speed of sea waves, which have their own difficulties in solving them numerically. This study aims to analyze the stability of wave propagation on submerged breakwaters. This research will approximate the finite discretization of the breakwater domain and then combine it with the Finite Element Method to determine the moving elements of the velocity of fluid flow through a porous submerged breakwater.  The research has explained the equation of the inflated wave and the simulated representation displayed on the wave breakdown process, the point that becomes the center of the waves breakdown will give a focused red color indicator meaning there is a change in momentum and potential energy that occurs and then changes the colour of the post-flattering of the sea wave so that the sinking wave breaker is a method to obtain the minimum speed and amplitude values that can be used for coastal engineering.
Mathematical Model for Vehicle Routing and Scheduling with Forward and Reverse Logistics
Authors: Resti Lady Ichwana , Mawengkang Herman , Rosmaini Elly
Published: June 2023

Companies usually use cross-docking to reduce logistics costs. The product delivery process from suppliers to retailers and vice versa is facilitated by crossdocking facilities. One of important problem in crossdocking is vehicle routes. In this work we discuss about cross-docking problem for vehicle routes which is brought into the form of an integration model. We also present the strategy to handle the forward and reverse logistics. From this strategy we have a NP-hard mathematical model as the result.
PERCEPTION AND SATISFACTION AMONG OPEN AND DISTANCE LEARNING STUDENTS IN UNIVERSITI TEKNOLOGI MALAYSIA
Authors: Bunsu Christnalter , Abd Halim Noor Dayana
Published: June 2023

In Universiti Teknologi Malaysia (UTM), the Open and Distance Learning (ODL) programme has been around quite recently and many things need to be discovered to improve it. The programme is running well and was already offered before the pandemic outbreak. However, a continuous evaluation is necessary to optimise both students’ learning and the quality of the education programme. The success of ODL programme could be affected by how it is viewed by the students involved in it and how satisfied they are with the overall learning experience. Therefore, this research was conducted quantitatively based on a survey research design, which aimed to identify students’ perception of and satisfaction with the ODL programme. The instrument used in this research is questionnaire with items adopted and modified from previous studies. Additionally, two educational technology lecturers with two-year experience in teaching the ODL programme were selected to validate the instrument. In this programme particularly, students were fully working adults with various backgrounds among them, ranging from local to international. A total of 107 students responded to the questionnaire and the data were analysed by using descriptive statistics. From the analysis, it was found that most students had a very positive perception and were highly satisfied with the ODL programme. It is hoped that the findings would be insightful for UTM, especially for the School of Education as a service provider, in taking professional consideration to improve the quality of the mentioned programme. Furthermore, these findings will provide useful insights for ODL lecturers in refining their teaching quality.
Estimación del nivel de arborización para edificaciones en clima tropical: Enfoque estadístico y simulación dinámica
Authors: Austin-Ortega Daniel , Mora Dafni , Chen Austin Miguel
Published: June 2023

El humano siempre ha buscado el confort en varios aspectos de su día a día, el confort térmico es uno de esos ya que afecta directamente el desempeño del mismo en actividades que realiza, puede mejorar, como empeorar estas actividades diarias. La búsqueda de confort térmico en los espacios donde convivimos, conlleva, en muchos casos a un consumo eléctrico desmedido por una mala planificación de diseño de la estructura donde habitamos, donde las altas temperaturas permanecen durante todo el día y nos obliga a usar equipos de aire acondicionado para lograr el confort térmico. En esta investigación buscamos aumentar la eficiencia energética de una edificación, disminuyendo las ganancias solares internas mediante simulaciones en DesignBuilder de diferentes escenarios que acoplan el uso de la arborización: un método pasivo amable con el ambiente el cual utiliza los árboles como barrera entre los rayos solares y la edificación con el índice de estructura verde, el cual toma en cuenta el patrón con el que se siembran los árboles para disminuir el consumo eléctrico de la edificación disminuyendo las temperaturas internas de la misma. Esto apoyado con otras técnicas de optimización que utilizan ciertos parámetros de construcción de la edificación, para sacarle un mayor provecho a la misma desde su diseño. El uso de la arborización ha demostrado ser eficiente para reducir el consumo eléctrico en edificaciones, principalmente cuando se utilizan para bloquear los rayos solares que inciden en las ventanas, que son la principal fuente de ganancias internas de temperatura.
Evaluación agronómica de híbridos de pepino (Cucumis sativus L.)
Authors: Monge-Pérez José Eladio , Loría-Coto Michelle
Published: June 2023

Objetivos: se evaluó tanto el rendimiento como la calidad de ocho híbridos de pepino tipo ‘slicer’, producidos bajo invernadero en Alajuela, Costa Rica.  Metodología:  las plantas se sembraron en sustrato de fibra de coco, con poda a un tallo por planta, y recibieron fertirrigación.  Resultados:  los híbridos de pepino mostraron una amplia variabilidad en cuanto al número total de frutos por área (68.01 – 127.77frutos/m2), peso del fruto (216.39 – 270.06g), rendimiento comercial (135.9 – 227.1ton/ha), rendimiento total (179.9 – 285.5ton/ha) y porcentaje de sólidos solubles totales (2.87 – 3.21°Brix).  Los híbridos PSX-11 y JMX-223 obtuvieron el mayor número de frutos de primera calidad por área (50.04 y 50.43frutos/m2, respectivamente), el menor peso del fruto de primera calidad (246.99 y 246.12g, respectivamente), y el mayor rendimiento comercial (208.6 y 227.1ton/ha, respectivamente) y de primera calidad (124.6 y 124.8ton/ha, respectivamente), y estos resultados fueron significativamente diferentes con respecto a los obtenidos por los demás híbridos.  Conclusiones:  Los híbridos de pepino más productivos fueron PSX-11 y JMX-223, bajo las condiciones en que se desarrolló el ensayo.
EVALUASI TEBAL PERKERASAN LENTUR PADA PROYEK PEMBANGUNAN JALAN PELABUHAN TELUK TAPANG – BUNGA TANJUNG KABUPATEN PASAMAN BARAT
Authors: Andre Anton , Ishak Ishak , Yermadona Helga
Published: June 2023

AbstractWest Pasaman Regency is one of the regencies in West Sumatra, with an area of 3,864.02 km2 with a population of 365,129 people West Pasaman Regency has an administrative area with the northern border bordering mandailing Natal Regency of North Sumatra Province, the east borders Pasaman Regency, the south borders Pasaman Regency and Agam Regency of West Sumatra Province, The west borders the Indonesian Ocean. The purpose of this study was to compare the two methods on the thickness of the bending pavement using the method from AASHTO 1993 and the Bina Marga Road Pavement Design Manual Method 2017. Evaluation of the thick bending pavement using the Bina Marga Road Pavement Design Manual method 2017 and the AASHTO 1993 method is further grouped according to identification and problems, so that effective and directed solution analysis can be obtained. Thick bending pavement with bina marga method 2017 obtained the thickness of the bottom foundation 30 cm, Ac-Base 8 cm, AC-BC 6 cm, and AC-WC 4 cm. The thickness of the bending pavement with the AASHTO method 1993 obtained the thickness of the foundation D1 = 15 cm, D2 = 10 cm, and D3 by 10 cm. Differences in the results of the thick design of pavement obtained from the Bina Marga method 2017 and the AASHTO method 1993 are due to differences in concepts, parameters and design procedures in both methods. The design concept in Bina Marga 2017 is mechanistic empirical, while in AASHTO 1993 in the form of empirical methods.Key words: Flexible Pavement, Bina Marga 2017, AASHTO 1993.
ANALISIS DAMPAK LALU LINTAS DI SIMPANG AUR KOTA BUKITTINGGI
Authors: Vora Arena , Masril Masril , Yermadona Helga
Published: June 2023

Kota Bukittinggi sebagai Kota Wisata juga merupakan kota Perdagangan. Salah satu Pasar yang terkenal dikota Bukittinggi adalah Pasar Simpang Aur yang terletak dekat dengan terminal Simpang Aur. Sebagai  Pusat Pasar yang lokasinya berdekatan dengan Terminal Simpang Aur dan Pasar Sayur Aur dengan aktifitas yang tinggi serta belum optimalnya fungsi terminal menjadi salah satu penyebab terjadinya macet di Simpang Aur Kota Bukittinggi. Pada penelitian ini pengambilan data dilakukan selama 3 hari di 3 lokasi Jalan yaitu Jl.St.Syahrir, Jl. M.Yamin, SH dan Jl.Diponegoro yaitu terhadap volume lalu lintas, kecepatan lalu lintas dan data geometri jalan dari SKPD terkait. Dari hasil penelitian diperoleh volume kendaraan terpadat berada di Jl.St.Syahrir dan Jl.Diponegoro pada hari Pasar dan terendah itu berada di Jl.M.Yamin ,SH pada hari kerja atau biasa. Kelas hambatan samping dari ketiga lokasi penelitian termasuk sedang, untuk derajat kejenuhan pada ketiga lokasi tertinggi berada pada jalan Diponegoro, sedangkan perhitungan kecepatan   kendaraan pada lokasi JL.St. Syahrir 12 km/jam , Jl.M.Yamin,SH 6 Km/jam dan Jl.Diponegoro 15 Km/jam. Untuk Analisa kepadatan di Jl. St.Syahrir merupakan terpadat dibandingkan 2 lokasi pengamatan lainnya dengan jam puncak kepadatan berada pada pukul 11.00 Wib -12.00 Wib.  Arus kendaraan cukup stabil hanya saja terjadi perlambatan didepan Rumah Makan Simpang Raya karena adanya terminal bayangan Angkutan Kota Dalam Provinsi kendaraan menuju Solok, Padang Panjang, Padang dan beberapa kota di Sumatera Barat. Penambahan rambu-rambu lalu lintas, mengoptimalkan fungsi terminal serta melakukan Revitalisasi Pasar Simpang Aur menjadi Pusat Bisnis Modern menjadi solusi untuk mengatasi kesembrautan di Simpang Aur Kota Bukittinggi.Oleh sebab itu perlu dilakukan Analisis Dampak Lalu Lintas di Simpang Aur Kota Bukittinggi sesuai dengan Peraturan Pemerintah Nomor 32 Tahun 2011 dimana Analisis Dampak lalu Lintas adalah serangkaian kegiatan kajian mengenai dampak lalu lintas dari pembangunan pusat kegiatan, permukiman dan infrastruktur yang hasilnya dituangkan dalam bentuk dokumen hasil analisis dampak lalu lintas.Kata kunci : Simpang Aur Kota Bukittinggi , Analisis Dampak Lalu Lintas, Volume dan kecepatan Lalu Lintas.
ANALISIS KINERJA SIMPANG EMPAT TAK BERSINYAL (Studi Kasus : Persimpangan Jalan Ahmad Yani Ekor Lubuk Kota Padang Panjang).
Authors: Hendri .S Hendri .S , Ishak Ishak , Dewi Selpa
Published: June 2023

ABSTRACTTransportation is the movement of people or goods from one place to another or from the place of origin to the destination with or without the use of assistive devices. To expedite these activities, it is necessary to increase the capacity of the road structure where adequate planning of transportation modes is needed by prioritizing aspects of speed and also considering aspects of safety, comfort and environmental impact. To optimize the function of the road network, an intersection transportation system is implemented. The Ahmad Yani Street intersection (Padang Panjang – Solok Highway) is one of the main roads in the city of Padang Panjang where the activity in this road area is quite large. The pattern of traffic regulation at this intersection is not yet regular, so vehicles are often found scrambling for space to pass through the intersection and have a higher risk of accidents, this will cause congestion. The purpose of this study is to determine the level of performance of unsignaled intersections in serving traffic based on data obtained from field surveys and to determine the traffic flow at the Ahmad Yani, Street, Padang Panjang City. The research method used in this research is quantitative (field survey). The survey was conducted for 3 days, namely Monday, Friday, and Saturday. Which from the presearch results peak hours occur on Mondays. This intersection has a high side resistance with a degree of saturation (DS) = 1.883, the average delay is -9.52 and the queue probability is also high 160.29% - 379.51%.Keywords : Degree of Saturation, Side Barrier, Unsignalized Intersection, Delay, Queue Opportunity, MKJI
PENGARUH PENGGUNAAN LIMBAH BETON SEBAGAI SUBSTITUSI AGREGAT KASAR PADA CAMPURAN BETON 10%, 20%, 30% TERHADAP KUAT TEKAN BETON FC’ 20,75 MPA
Authors: Saputra Bobi , Ishak Ishak , Dewi Selpa
Published: June 2023

The development of an increasingly advanced era of globalization has led to the development of construction technology that is increasingly rapid. construction waste in the form of reinforcing steel, wood and concrete has a negative impact on the environment around the construction project. One example of efforts to reduce the impact of this waste is to reuse concrete waste for the use of new concrete. This study aims to determine how much influence the use of concrete waste as a substitute for coarse aggregate on the value of the compressive strength of concrete, and determine the compressive strength of the substitution of coarse aggregate with 10%, 20% and 30% concrete waste in the concrete mixture. The method used in this research is experimental research in which to obtain data and research results by conducting tests and research in the laboratory. the results of concrete experiments that have been carried out and the data obtained with the quality of normal concrete fc 20.75 Mpa and concrete with the substitution of waste concrete against coarse aggregate can cause a decrease in the compressive strength of concrete against normal concrete. The higher the percentage of concrete waste mixture in concrete can reduce the quality of its compressive strength, waste concrete is not good for use as a mixture of concrete.  Keywords: Concrete, Waste Concrete, Compressive Strength
EVALUSI SALURAN SEKUNDER IRIGASI SIGATA KOTA PADANG PANJANG
Authors: Asrul Asrul , Eka Priana Surya , Dewi Selpa
Published: June 2023

Irigasi merupakan usaha penyediaan, pengaturan dan penyaluran air irigasi untuk menunjang pertanian yang jenisnya meliputi irigasi permukaan, irigasi rawa, irigasi air bawah tanah, irigasi pompa,dan irigasi tambak. Irigasi berarti mengalirkan air dari sumber air yang tersedia kepada sebidang lahan untuk memenuhi kebutuhan            tanaman.          Irigasi             sangat    penting                                   dalam                     pemenuhan produksi pangan nasional seperti pada saluran irigasi Sigata Kota Padang Panjang.Untuk mengetahui kondisi dan keadaan irigasi dilakukan dengan mengevaluasi saluran irigasinya Jaringan Irigasi Sigata terletak di Kelurahan Ngalau Kecamatan Padang Panjang Timur Kota Padang Panjang. Jaringan Irigasi ini merupakan salah satu Jaringan yang digunakan sebagai pengairan lahan pertanian masyarakat di Kelurahan Ngalau. Tipe saluran yang di evalusasi adalah saluran primer, berdasarkan pengamatan lapangan ukuran saluran tersebut yaitu b1 0,70 cm b2 0,50 cm h 0,60 cm untuk saluran yang di rencanakan yaitu b1 1,8 cm, b2 1,3 cm, h 1,4 cm Metode pengelolaan data curah hujan yang digunakan adalah Harspersdan Gumbel, dengan hasil perhitungan utuk R 5 tahun 3021 mm dan R10 tahun 4713 mm. Berdasarkan perhitungan dimensi existing saluran yang ada dilapangan tidak memenuhi syarat karena nilai Qmax 29,72 m³/ dt lebih besar dari Q rencana 2,73 m³/dt, sehingga ketika terjadi banjir saluran tidak dapat mampu untuk menampung atau meluap. Dan berdasarkan hasil perhitungan yang akan direncana nilai Q rencana 32,54 m³/dt lebih besar dari nilai Qmax 29,72 m³/ dt jadi berdasarkan dimensi saluran yang direncana dapat menampung curah hujan yang mksimal. Kata kunci : Saluran irigasi, curah hujan, debit, dimensi saluran, Harspers, Gumbel
PENGARUH PERLINTASAN KERETA API TERHADAP ARUS LALU LINTAS DISIMPANGTUNGGULHITAM KOTAPADANG
Authors: Lubis Iin Siswara , Eka Priana Surya , Yusman Ana Susanti
Published: June 2023

KotaPadangmerupakansalahsatukotayangpertambahanjumlahpenduduknyacukuptinggi.Seiringdenganpertambahanjumlahpenduduktersebutmakaaktifitasmanusiadanpergerakanpenduduk meningkat sehingga kebutuhan sarana transportasi darat semakin bertambah. Salah satupermasalahan yang terjadi adalah perlintasan sebidang antara jalan raya dan jalan rel kereta api disimpangTunggulHitamPadang.Permasalahanyangtampakadalahwalaupunsistemkontroltersebut telah dioperasikan dengan benar, bila volume kendaraan pada pendekat lintasan sedemikianbesar maka akan menimbulkan tundaan dan panjang antrian yang cukup berarti, pada saat itu pulaterciptalah suatu gangguan pada sistem transportasi. terjadi perubahan nilai parameter (kecepatanarus bebas, kecepatan maksimum, kepadatan macet, kepadatan maksimum dan aliran maksimum),data lain yang digunakan berupa data sekunder yang terdiri dari jumlah penduduk dan peta lokasi,Disimpang tunggul hitam kota Padang adalah dua pertemuan jalan yaitu jalan Kemayoran dan JalanProf. Dr. Hamka selain itu disimpang tunggul hitam kota Padang dekat dengan Universitas NegriPadang (UNP), Pada penelitian ini data yang diperoleh dari survei lapangan di Jalan Prof. Dr.HamkadanjalanKemayoranselamaempathari,yaitusenin,rabu,sabtudanminggu.Daripengamatan diperoleh panjang antrian terbesar adalah 30 (m), sedangkan tundaan terbesar adalah9,6(km/jam)danvolumelalau lintasterbesaradalah 773,2 (smp/jam). KataKunci: Kinerja RuasJalan, VolumeLaluLintas,Panjang Antrian,Jalur KeretaApi
ANALISIS WAKTU PADA PEMBANGUNAN DAM PENAHAN JALAN BINUANG KOTA BUKITTINGGI MENGGUNAKAN MICROSOFT PROJECT
Authors: Kamal Ahmad , Ishak Ishak , Kurniawan Deddy
Published: June 2023

In the implementation of a construction project, delays are very common in the field. Acceleration is needed to overcome or minimize the delay. The acceleration efforts made will certainly have an impact on increasing the time on the project so it is necessary to analyze the time for the construction. There are many methods that can be done one of them by using the help of a computer program. The purpose of this study was to determine the time through Microsoft Project 2016 analysis. A case study was conducted on the construction of the Binuang Road Retaining Dam in Bukittinggi City, with a project implementation time of 17 weeks or 120 working days. The alternative used in this research is to analyze or review the time of the project. Furthermore, scheduling analysis is carried out through Microsoft Project 2016 so that the critical path is obtained which becomes a reference for activities to be optimized and to analyze the time that occurs after the acceleration is carried out by the Crashing Program. After analyzing the results, the same results were obtained in the Microsoft Project 2016 output. The maximum acceleration occurred in the addition of working days or the absence of holidays or 7 days faster than the normal duration of 113 days. Keywords: acceleration, Microsoft Project, Crashing Program.
TINJAUAN EFEKTIVITAS PENGGUNAAN ALAT BERAT PADA PROYEK JALAN KURAI MUDIAK LIKI, KEC. SULIKI
Authors: Esa M. , Eka Priana Surya , Kurniawan Deddy
Published: June 2023

Alat berat merupakan faktor penting di dalam proyek, terutama proyek-proyek konstruksi dengan skala yang besar. Alat berat yang digunakan dalam ilmu teknik sipil adalah alat yang digunakan untuk membantu manusia dalam melakukan pekerjaan pembangunan dan diperhitungkan analisa produktifitas alat berat agar penggunaannya lebih efisiensi dari segi waktu dan biaya operasionalnya. Proyek ini berfungsi sebagai bangunan tempat untuk aktifitas perkuliahan dan tanah lokasi proyek memiliki panjang 3.7 km . Jenis alat berat yang digunakan untuk pekerjaan jalan tersebut ialah motor grader, vibrator roller, dump truck, water tank, asphalt finisher, tandem roller, pneumatic tyre roller. Agar memperoleh hasil produksi alat secara optimal perlu dilakukan analisis data untuk mengetahui anggaran biaya yang dikeluarkan sesuai analisa. Dengan demikian kita dapat menganalisa penggunaan alat berat dengan tepat dan memperhitungkan biaya yang diperlukan dalam penggunaan alat tersebut. Perencanaan dengan menggunakan alat berat dipengaruhi oleh pemilihan alat berat, kondisi alat berat, kemampuan operator, situasi dan kondisi medan kerja dilapangan. Berdasarkan hasil perhitungan analisa produktifitas alat berat yang meliputi pekerjaan pekerjaan lapisan pondasi kelas A dan pekerjaan pengaspalan diperoleh hasil penelitian alat berat yang tepat, waktu yang singkat dan dapat digunakan agar seluruh alat berat dapat bekerja optimal. Kata Kunci : Alat berat, efisien, waktu, dan biaya.
ANALISIS PENURUNAN GANGGUAN AKIBAT PETIR PADA TRANSMISI 150 KV PENGHANTAR MANINJAU – SIMPANG EMPAT MENGGUNAKAN DGS (DIRECT GROUNDING SYSTEM)
Authors: Suheri Muhammad , Yulisman Yulisman , Kamil Mahyessie
Published: June 2023

Energi listrik yang kita rasakan saat ini merupakan energi listrik yang telah melalui proses panjang, yakni dari mulai pembangkitan energi listrik kemudian disalurkan melalui saluran udara tegangan tinggi, lalu sampai dipusat beban dan terakhir didistribusikan ke konsumen/masyarakat. Dalam proses penyaluran energi listrik sistem penyaluran/transmisi memegang peranan penting, untuk penghantar Saluran Udara Tegangan Tinggi (SUTT) 150 kV yang menghubungkan Gardu Induk (pusat beban). Dikarenakan beroperasi pada tegangan tinggi tentunya diperlukan tower yang kokoh dan tinggi supaya terhindar dari segala gangguan baik gangguan yang dapat di kontrol maupun gangguan yang tidak dapat dikontrol. Salah satu gangguan Transmisi yang tidak dapat dikontrol adalah gangguan petir. Didalam desain Tower SUTT yang dimiliki PLN saat ini memiliki pengaman dari petir yaitu DGS (Direct Grounding System) yang cukup efektif menurunkan ganguan akibat Petir dikarnakan semenjak pemasangan DGS tersebut ganguan akibat petir dapat di minimalisir.Kata kunci: Energi listrik, pusat beban, DGS
PENERAPAN BIM PADA PEMBANGUNAN STRUKTUR KANTOR DINAS PERPUSTAKAAN DAN ARSIP KABUPATEN LIMA PULUH KOTA MENGGUNAKAN SOFTWARE TEKLA STRUCTURES
Authors: Katami Agil Moehamad , Yermadona Helga , Masril Masril
Published: June 2023

Pada umumnya proyek konstruksi mempunyai rencana dan biaya pelaksanaan. Namun, seiring dengan perkembangan zaman, maka tingkat kesulitan untuk mengelola dan menjalankan proyek semakin tinggi. Rencana anggaran biaya merupakan biaya kebutuhan pada sebuah proyek yang mencakup mulai dari biaya pekerjaan persiapan sampai dengan finishing. Penelitian yang dilaksanakan pada bulan Maret - Agustus 2020 ini berlokasi di kawasan pasar baru Kecamatan Payakumbuh Utara Kota Payakumbuh. Dengan beberapa tambahan informasi-informasi yang diperlukan, pemodelan 3D dilakukan berdasarkan data Detail Engineering Design dari proyek pembangunan Kantor Dinas Pendidikan, Satpol PP dan BPBD. Kemudian pemodelan dilakukan dengan Software Tekla Structures 2019i dalam bentuk desain 3D. Dengan adanya desain 3D semua detail struktur dapat dilihat dan kebutuhan material dapat diketahui, kebutuhan material dikeluarkan melalui Organizer yang di Ekspor ke Microsoft excel. Dari kebutuhan bahan dan material kita bisa mendapatkan analisa biaya struktur dengan mengalikan kebutuhan bahan yang ada dengan harga pasaran di masing-masing daerah. Kebutuhan biaya material yang didapat dari Tekla Structures sebesar  Rp. 1.064.669.000,00.  Kata Kunci: AutoCAD, BIM, RAB, Tekla Structures 2019i, Trimble Connect