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The Use of Qual2KW to Analyze the Concentration of pH, Nitrate, Phosphate, and Fecal Coliform on Water Quality: A Case Study of the Klampok River, Semarang Regency Winardi Dwi Nugraha; Sudharto Prawata Hadi; Setia Budi Sasongko; Adranandini Noor Anisa; Mochamad Arief Budihardjo
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 19, No 2 (2022): July 2022
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1211.525 KB) | DOI: 10.14710/presipitasi.v19i2.208-221

Abstract

Usually, the main source of water is a river, which makes it essential to ensure that the water from that source is not polluted and in accordance with the water quality standards. Water quality can deteriorate as a result of domestic and industrial waste. This quality is measured based on several parameters, such as the concentration of pH, nitrate, phosphate, and fecal coliform in the water. QUAL2KW can be used to analyze river water quality in order to solve several water quality-related problems. The main river water source in Semarang Regency is the Klampok River, whose water is used to support agriculture, livestock, and other activities. This study aims to determine the concentration of the above-mentioned parameters in the samples from the Klampok River using QUAL2KW. The water samples are obtained from different six points on the Klampok River, and the chi-square test is used for validation. From the laboratory test results for the river-quality parameters, after being simulated using QUAL2KW and validated using the chi-square method, it can be concluded that the quality of the Klampok River belongs to class II. These results can be used as a reference by the Semarang Regency government in managing river water quality.
Sustainability Indicator: An Initial Parameter for Convenience Product Bulan Prabawani; Sudharto Prawata Hadi
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 19, No 1 (2022): March 2022
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (677.592 KB) | DOI: 10.14710/presipitasi.v19i1.179-189

Abstract

The environmental awareness of consumer has been growing along with the increase of knowledge, education and access to information. The demand from the government, media, and community has also increasingly escalated the pressure to companies to produce environmentally friendly products. This eventually encourages greenwashing practices extensively which are unfavorable to consumers because the practice is frequently included as marketing scam. In addition, the existing environmentally-based certification is primarily oriented to the planet and profit aspects of the triple bottom lines and tends to ignore the community. Hence, this study reviews a variety of green-based certifications or sustainability indicators which has existed particularly in Indonesia and their potential for the development of convenience products, products which are consumed in high frequency since they are cheap and consumed daily. This research involves explorative analysis using open secondary data from public journalism, media releases, academic references, and official webpages. Furthermore, this research describes current green-based certifications and presents the initial concept of a sustainability indicator which involved the planet and humans concurrently as well as adopt Proper label as product labelling. 
The Effect of Environmental, Social, And Governance (ESG) Disclosure on Corporate Value: A Systematic Literature Review Kevindra Adityananda Galih Prakasa; Sudharto Prawata Hadi; Andi Wijayanto
Journal of Social Research Vol. 5 No. 9 (2026): Journal of Social Research
Publisher : International Journal Labs (AHU-0028405-AH.01.14 Tahun 2022)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/josr.v5i9.3389

Abstract

Over the past few years, the need for disclosing non-financial information has increased significantly, particularly regarding Environmental, Social, and Governance (ESG) aspects, as investors increasingly seek transparency in corporate practices beyond conventional financial reporting. This study aimed to analyze the relationship between ESG principles and corporate value, with an emphasis on how effective ESG implementation can enhance long-term value creation and sustainability. The research employed a Systematic Literature Review (SLR) approach, which involved identifying, evaluating, and synthesizing relevant evidence related to the research topic. A total of 30 selected articles were synthesized from an initial screening of 92 eligible articles based on predefined inclusion criteria. The findings, presented through a classification matrix, revealed that the impact of ESG disclosure on corporate value remained inconsistent across studies. These variations were influenced by regional contexts—for example, positive governance effects were more evident in Indonesia, varied across studies in Thailand, and remained significant in China even after the COVID-19 pandemic—as well as industry characteristics and external economic conditions, such as financial crises and macroeconomic uncertainty. Although the findings differed, the impact of ESG disclosure that was weak or insignificant in isolation was often strengthened when moderated by factors such as competitive advantage, governance mechanisms, and financing constraints. This study concluded that ESG disclosure alone was not sufficient to drive corporate value; instead, companies needed to integrate ESG practices with strategic advantages to achieve optimal outcomes. Future research is recommended to expand regional coverage and include broader industry sectors to generate more generalizable and comparable findings across different markets.Over the past few years, the need for disclosing non-financial information has increased significantly, particularly regarding Environmental, Social, and Governance (ESG) aspects, as investors increasingly seek transparency in corporate practices beyond conventional financial reporting. This study aimed to analyze the relationship between ESG principles and corporate value, with an emphasis on how effective ESG implementation can enhance long-term value creation and sustainability. The research employed a Systematic Literature Review (SLR) approach, which involved identifying, evaluating, and synthesizing relevant evidence related to the research topic. A total of 30 selected articles were synthesized from an initial screening of 92 eligible articles based on predefined inclusion criteria. The findings, presented through a classification matrix, revealed that the impact of ESG disclosure on corporate value remained inconsistent across studies. These variations were influenced by regional contexts—for example, positive governance effects were more evident in Indonesia, varied across studies in Thailand, and remained significant in China even after the COVID-19 pandemic—as well as industry characteristics and external economic conditions, such as financial crises and macroeconomic uncertainty. Although the findings differed, the impact of ESG disclosure that was weak or insignificant in isolation was often strengthened when moderated by factors such as competitive advantage, governance mechanisms, and financing constraints. This study concluded that ESG disclosure alone was not sufficient to drive corporate value; instead, companies needed to integrate ESG practices with strategic advantages to achieve optimal outcomes. Future research is recommended to expand regional coverage and include broader industry sectors to generate more generalizable and comparable findings across different markets.