Biodiesel, an environmentally degradable and renewable biofuel derived from organic matter, has exhibited its capacity as a viable and sustainable substitute for traditional diesel fuel. Numerous comprehensive investigations have been conducted to assess the effects of biodiesel on internal combustion engines (ICEs), with particular emphasis on diesel engine performance metrics, combustion dynamics, and emission profiles. Biodiesel demonstrates a significant decrease in emissions of particulate matter (PM), hydrocarbon (HC), and carbon monoxide (CO) in diesel engines. The addition of biodiesel has shown a minor decrease in power output and a slight increase in fuel consumption and nitrogen oxide (NOx) emissions. Nevertheless, the extensive implementation of biodiesel, despite its potential to effectively reduce detrimental emissions, has encountered obstacles stemming from external influences including restricted availability of feedstock, volatile petroleum oil prices, and inadequate governmental backing. This review presents a concise summary of significant advancements in the global adoption of biodiesel from a sustainability perspective. This review provides valuable insights into the challenges and opportunities associated with the advancement of sustainable biofuel technologies by synthesizing the current state of palm biodiesel and examining global trends in biodiesel implementation. The wider adoption of biodiesel can be facilitated by addressing concerns pertaining to feedstock availability, price stability, and policy support. This would allow for the realization of significant environmental advantages and contribute to a more environmentally friendly and sustainable biofuel.

The rapid development of digitalization, the Internet of Things (IoT), and Industry 4.0 has led to the emergence of the digital twin concept. IoT is an important pillar of the digital twin. The digital twin serves as a crucial link, merging the physical and digital territories of Industry 4.0. Digital twins are beneficial to numerous industries, providing the capability to perform advanced analytics, create detailed simulations, and facilitate informed decision-making that IoT supports. This paper presents a review of the literature on digital twins, discussing its concepts, definitions, frameworks, application methods, and challenges. The review spans various domains, including manufacturing, energy, agriculture, maintenance, construction, transportation, and smart cities in Industry 4.0. The present study suggests that the terminology “3 dimensional (3D) digital twin” is a more fitting descriptor for digital twin technology assisted by IoT. The aforementioned statement serves as the central argument of the study. This article advocates for a shift in terminology, replacing “digital twin” with “3D digital twin” to more accurately depict the technology’s innate potential and capabilities in Industry 4.0. We aim to establish that “3D digital twin” offers a more precise and holistic representation of the technology. By doing so, we underline the digital twin’s analytical ability and capacity to offer an intuitive understanding of systems, which can significantly streamline decision-making processes using the digital twin.

Purpose: This paper aims to explore service learning with its insights in empowering corporate responsibility awareness. Attempts to build corporate responsibility widely in incorporating into the sustainability engagement could be demonstrated in fostering the transformative experiential learning with extensive evaluation and reconfiguration of existing programs. The focus on enhancing the learning experience in emphasizing the community engagement would be applied with strengthening the actual performance in encompassing the ability raising awareness about the environmental issues. Design/methodology/approach: The approach used in this paper refers to develop the conceptual framework about the service learning with various strategies to give insight on corporate social responsibility (CSR). Incorporating the approach of conceptualizing the basis of service learning, key consideration was generated into particular enhancement of service learning in contributing to the CSR. Findings: The finding reveals that getting benefit to serving into the community engagement may take beneficial outcomes with its valuable insight to assist in the progress of program designed with associating to enhance corporate responsibility and sustainability awareness. The advancement of the social control among the companies would be deployed within empowering service learning for CSR where sustainability awareness-based community service as embodiment of CSR should be enhanced through nurturing corporate responsibility-based transformative experiential learning. Moreover, this initiative refers to an attempt to strengthen the basis of corporate responsibility and sustainability awareness-based experiential learning, which could enlarge creative thinking with envisioning sustainability and corporate responsibility. Originality/value: This study is expected to contribute to the experiential learning to enhance the sustainability within the learning setting engaged in achieving what to contribute to the environmental concern. In creating the situation where the balance between serving and learning can be achieved, attempts to encourage them in joining the service learning program should be collaborated with orienting both personal and social community oriented comprehensively in underlying the responsibility awareness, the sustainability-based moral values. These aim to enhance the understanding stage about the care for protecting the environmental concern within learning experience with the goal to produce responsible awareness especially by economic agents such as shareholders, managers, regulators and active participants to promote sustainable benefits.

The advantage of competitive atmosphere in business has a significant role in helping to enhance productivity. It is necessary to empower competitive awareness with cooperative engagement to give clear understanding for core guideline and insightful view on promoting social entrepreneurship. This chapter attempts to explore the initiated engagement between cooperative and competitive concern paid attention in the particular way among the firms along with increasing popularity to achieve certain objectives like growing the business with entrepreneurship. The finding reveals that attracting growing amounts of cooperative and competitive alliance should be strengthened to gain the feedback and insights into performance value in social entrepreneurship where this is eventually integrated with the entrepreneurship in a way that underlies the value to run the potential business. This chapter is supposed to contribute significant insights into exploring the key role of strategies to give the beneficial feedback to perform continuous improvement in social entrepreneurship.

In comparison to ethanol biofuel, butanol is considerably less corrosive, permitting the utilization of existing infrastructures used to ship gasoline or diesel for its distribution. Less corrosive also means that butanol can be utilized with no engine alteration. If butanol is mixed with water, it is less likely to split from the main fuel, thus facilitating the storage and distribution of blended fuels. Butanol also comprises a comparable energy content to petrol fuel, with 25% more energy density/liter as opposed to ethanol. All these excellent qualities have led to higher engine performance, enabling the vehicles to achieve higher mileage using butanol with no significant issue. Several challenges and future research directions are discussed and in the last section of this review article, we emphasize the importance of an optical engine to diagnose engine combustion in more detail. The consequence of using butanol on spark ignition engine on cold start and knock phenomena are also worth investigating. Results on the spray, the pressure inside the cylinder, rate of heat release, and detonation are thus required.

The award is given by the company to the best employees always to provide the best performance for companies that carry out duties and obligations in the company. How to give rewards to employees not only for how long they have been working at the company but about the results achieved. The gift can be in the form of salary or inventory from the company. So employees have great loyalty to the company. Decision making to determine the company can do the best employee by assessing the performance that has been done by employees at a specific time. Performance evaluation of Hon Chuan Company is influenced by several criteria, namely discipline, innovation, and responsibility. The support system for the best employee selection method uses the Analytical Hierarchy Process (AHP) method. The decision-making system is carried out to assess choices based on predetermined criteria. AHP method is applied to choose the best prospective employees. The calculation of the AHP method gives the results of the order of importance of criteria, namely discipline level (0.5584), responsibility (0.3196), and innovation (0.1220) and the best employee selection results obtained by Hendra (0.189), Vienna (0.189), Yin (0.145), Paul (0.109), Kandi (0.108), Kusworo (0.101), Bayu (0.088), and Ade Muhidin (0.072).