ABSTRACT Red chili production in Riau province has decreased in the last three years. Efforts to increase production are carried out by adding empty oil palm bunches (EOPB) and watering. This study aims to determine the interaction of EOPB compost and watering frequency, single factor of EOPB compost and watering frequency as well as to obtain the best EOPB compost dose and watering frequency …
ABSTRACT The high nutritional content and benefits of eggplant have increased the demand for eggplant, but eggplant production is still low and has not been met. Based on this, this study aims to determine the effect of interaction between NASA liquid organic fertilizer and NPK fertilizer, the single factor of administering NASA liquid organic fertilizer and NPK fertilizer, and to obtain the b…
ABSTRACT Pekanbaru City, located in Riau Province, Indonesia, comprises six sub-watersheds in its southern region: Sibam, Air Hitam, Senapelan, Sail, Tenayan, and Pendanau. Effective watershed management plays a vital role in hydrological planning, particularly in estimating peak flood discharge through the use of Synthetic Unit Hydrograph (SUH) methods. Among these, the Snyder method is widel…
Abstract Air transportation plays a crucial role in regional connectivity and economic growth. Kualanamu International Airport, as one of the main gateways in North Sumatra, experienced significant fluctuations in passenger numbers due to the COVID-19 pandemic. This study aims to evaluate and project the future demand for landing movements at Kualanamu Airport for the period 2024 to 2043. The …
ABSTRACT Methyl Ester Sulfonic Acid (MESA) is a group of anionic surfactants made through the sulfonation process. Methyl ester sulfonic acid is used to make liquid detergents. In Indonesia, there are not many factories or producers of methyl ester sulfonic acid so that imports are made to meet the needs. Therefore, the processing of methyl ester sulfonic acid is needed to meet the needs of me…
ABSTRACT Many cases of vision loss (such as those caused by infections, trauma, dangerous traditional medicines, diet-related disorders, prenatal Diseases, improper use or self-administration of topical therapy) are not always avoidable. Early Identification and proper treatment are essential for many Eye disorders, such as Diabetic retinopathy, to prevent irreparable vision loss. To detect …
ABSTRACT Radio over Fiber (RoF) is a telecommunications technology that integrates wireless networks and optical fibers to enhance network capacity and efficiency. However, RoF systems are vulnerable to the effects of Dispersion Power Fading (DPF), which can degrade signal quality. This research aims to analyze the performance of Dispersion Compensating Fiber (DCF) in mitigating DPF in RoF…
ABSTRACT The low productivity of shallots is due to the limited availability of fertile land in Riau Province. One way to overcome this problem is by using organic materials such as guano fertilizer. This study aims to determine the interaction between Guano Fertilizer and KCl, the single factor of guano fertilizer and KCl fertilizer, and determine the best combination for shallot growth a…
ABSTRACT The presence of cultural heritage artifacts is crucial as they represent a nation's history and identity. Currently, the condition of cultural heritage protection in Indonesia is concerning. There have been several cases of theft of cultural heritage artifacts, including incidents within museums, which should be the safest places for such collections. An example is the case at the Nat…
ABSTRACT This research aims to test and prove empirically the influence of financial conditions, leverage and auditor reputation on going concern audit opinion. The population of this research is real estate and property companies listed on the IDX for the 2019-2021 period with a total sample of 58 companies. The sampling technique uses purposive sampling. The data analysis method used in this…
ABSTRACK The purpose of this research is to test and analyse the effect of environmental performance, managerial ownership, and intellectual capital on firm value with financial performance as a mediating variable in manufacturing companies on the IDX in 2020-2023. The population in this study used 203 manufacturing companies listed on the Indonesia Stock Exchange (IDX), using purposive sampli…
This study aimed to analyze the total oil content in water and sediment and to assess the relationship between the two in the coastal waters of Lalang Village, Medang Deras Subdistrict, Batubara Regency. Samples were collected from three stations representing a tourist area, a river estuary, and an industrial area. The Gravimetri method (API 1340) was used for water, while the Soxhlet method wa…
ABSTRACT The purpose of this study was to test and analyse the effect of love of money, tax sanctions, and tax justice on taxpayers' perceptions of tax evasion ethics. The population in this study were active MSME taxpayers registered at KPP Pratama Pekanbaru Tampan, totalling 26,684 taxpayers. the number of samples used in this study were 100 respondents. The sampling technique used in th…
Audit delay, which is the time difference between the end of the fiscal year and the date of issuance of the audit report, is an important issue in the financial reporting of public companies in Indonesia. The timeliness of financial statements is needed by various parties, both internal and external to the company, to support relevant decision-making. This study aims to analyze the influence o…
ABSTRACT This study aims to provide empirical evidence on the effect of environmental performance, corporate social responsibility disclosure, and intellectual capital on company financial performance. The population in this study were all energy and agricultural companies listed on the Indonesia Stock Exchange (IDX) and participating in the PROPER program from the Ministry of Environment and …
ABSTRACT This study is to test the influence of (1) Regulation Enforcement, (2) Organizational Commitment, and (3) Leadership style on fraud in the government sector of the study in the Siak Regency OPD. In this study, the sample population was 43 regional apparatus organizations. Sampling using Purposive Sampling. Data analysis used in this study was using multiple regression analysis techniq…
ABSTRACT This study aims to examine the Influence of Sales Growth, Profitability, and Capital Intensity on Tax Aggressiveness With Institutional Ownership as Moderating Variable in Non-Cyclicals Consumer Sector Companies Listed on the Indonesian Stock Exchange (IDX) in 2020-2023. The method used in this research is multiple linear regression analysis method and moderated regression analysis wi…
ABSTRACT This study aims to examine the effect of the Self Assessment System and Tax Audit on Value Added Tax Revenue at KPP Pratama Bengkalis in 2019-2023. The research method used is quantitative research with data analysis techniques using SPSS Version 22 software. The sample in the study amounted to 60. The sampling technique used Purposive Sampling. The results of the study concluded that…
This study investigates the effectiveness of combining the Snyder Synthetic Unit Hydrograph (SUH) with three flood hydrograph models—Alexeyev, Gama I, and Nakayasu—in estimating High Direct Runoff (HDRO) across six sub-watersheds located in the southern region of the Siak River Basin, Pekanbaru City, Indonesia. The methodology integrates watershed characterization using Geographic Info…
ABSTRACT Thresher machine is a tool that serves to separate the fruit from the bunch by slamming the fresh fruit bunch (FFB) with the help of rotation on the thresher drum. This tool is in the form of a rotating drum with a speed of ± 22-25 rpm. The thresher drum is 2 meters in diameter and 4 meters long. The process to produce crude palm oil can be said to not be able to take place optimally…