This research aims to determine the effect of profitability, company activities, industry type on the disclosure of sustainability reports with institutional ownership as a moderator. This research was conducted on mining and manufacturing companies listed on the IDX in 2020-2022. The sampling technique uses a purposive sampling method, the data collection used is documentation. The sample in t…
This research is motivated by the problems that occur in history learning which is considered monotonous and the lack of student participation in the learning process. In addition, teachers also often use conventional models such as lectures, do not use variations in learning, so that the results of learning history do not increase. The purpose of this study was to determine student learning ou…
The research is to develop environmental education-based picture storybooks for elementary schools and to find out the feasibility of picture storybooks. This research uses Research and Development (R&D) using the ADDIE models (Analisys, Design, Development, Implementation and Evalution). The data collection technique used is to use questionnaires, interviews and trials. The feasibility of envi…
Indonesia is one of the largest producers of palm oil in the world which has 50% of palm oil waste in the form of Palm Oil Mill Effluent (POME) with a high level of Chemical Oxygen Demand (COD), causing pollution in the waters, so a method is needed to detect dissolved levels Oxygen (DO). This study aims to detect contamination of water bodies by POME waste using a biosensor based on the a…
ABSTRACT The research was conducted in March 2020 in Bangko Sub District, Rokan Hilir Regency, Riau Province. The research objective was to determine the amount of investment, gross income and profit, as well as to analyze the feasibility of the business with investment criteria such as RCR, PPC, and FRR for blood clam cultivation. The method used in this study was a survey method, while t…
This study aims to determine the effect of organizational climate and leadership on job satisfaction and employee performance, and the effect of job satisfaction on employee performance of PDAM Indragiri Hilir. The population in this study were all employees of PDAM Tirta Indragiri, Indragiri Hilir Regency as many as 121 people. While the sample in this study were 121 people using census techni…
Using solar panels as a power plant can reduce the dependence of fuel oil. To work always on maximum power points, Photovoltaic (PV) requires optimization method. For this reason, the authors are interested in discussing the optimization method of the PV array model using Maximum Power Point Traking (MPPT) with the Perturbation & Observation (P & O) Algorithm and Boost Converter. In this case, …
The problem in this study is to know how big the contribution of muscle strength of arm and shoulder and back muscle formation to the ability of waist roll (stomach). The population in this research is PPLP Riau male wrestling athlete as many as 10 people. The data collection techniques used in this study are muscle strength test of arm and shoulder with Expanding dynamometer. Test of back musc…
ABSTRACT Mining activities in most of Indonesia’s regions rarely pay attention to sustainable development, which is mining activities do not pay attention to the economic, social and environmental sustainability of the mining area. In the Marok Kecil village there was once a bauxite mining activity which at the moment is not longer operating. The purpose of this research is to analyze how d…
Child Age 4-5 year [in] Paud Jasmine District Of Sinaboi Sub- Province of Rokan Go downstream Specially [in] group of A, Some of child not yet can Show To count start real correctly, some of child still inversed mention number sequence 1-10, and some of child not yet can recognize number device. Therefore need a[n way of to increase ability of child in counting start in Paud Jasmine Distri…
This study was motivated by the low learning outcomes IPA fourth grade students of SD Negeri 16 Bandar Jaya, totaling 16 students with KKM 70 just 6 students, or 37.5% of the children who completed while 10 students or 62.5% were completed. According to this problem, the researchers have conducted research using Action Research (PTK) by applying Cooperative Learning Model two stay two stray. In…
Activated carbon had successfully been made from shell of Terminalia Catappa L with variation of carbonization times and KOH assisted microwaved activation. The carbonization times were varied for 2 hours, 3 hours and 4 hours, and then activated with mass of granular carbon and KOH with a variation of 2:1. The aim of this research was to study the characteristics of shell of Terminalia Catappa …