Koiwanit, Jarotwan
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Preferred name
Koiwanit, Jarotwan
Alternative Name
Koiwanit, J.
Main Affiliation
Email
jarotwan.ko@kmitl.ac.th
14 results
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Item type:Publication, Energy efficiency and environmental impact analysis in grocery store market in Canada(2018-01-01)There is growing pressure to limit Global Warming Potential (GWP) as it is the most significant way to reduce serious threats to people. The increase of average temperature in the atmosphere causes adverse effects on the environment, and this is changing the way business operates. Together with undergoing changes to be more environmentally friendly, the majority of business sectors has been launching many projects to reduce environmental impacts. Similar to grocery sector in Canada, many companies have been reported to investigate the environmental performance. Loblaw Companies Limited, the largest food distributors in Canada, has put more concerns on environmental impacts and worked diligently to reduce greenhouse gas (GHG) emissions through actions such as improving energy efficiency reducing refrigerant leaks, and incorporating renewable energy sources. This study analyzed Loblaw's energy efficiency and environmental performance and provided suggestions in the applications of skylight improvement, geothermal, refrigeration systems, kinetic energy to electricity, and e-grocery shopping. The results showed that the environmental concerns were substantially decreased. However, types of lights and refrigerators, distance driven, vehicle types, fuel used in e-grocery shopping results in the different amount of emissions; consequently, the GHG emissions varied depending on these factors. By integrating more environmentally technology, Loblaw could further reduce their emissions and waste and become a more sustainable company. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Business viability and carbon footprint of Thai-grown Nam Dok Mai mango powdered drink mix(2020-05-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Carbon Footprint Assessment of Food Waste Disposal Methods in a Thai Hypermarket’s Fresh Food Department(2026-04-01); ; ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Stakeholder collaboration for solid waste management in a small tourism island(2023-07-01); Filimonau, ViachaslauAlthough stakeholder collaboration is key for sustainable development of tourism in small islands, research on its determinants is only emerging. The lack of empirical studies hampers an understanding of how effective stakeholder partnerships for sustainability in small tourism islands can be formed and sustained. To partially address this knowledge gap, this study explores stakeholder collaboration for solid waste management in the island of Koh Phayam, Thailand, from the perspective of stakeholder theory, social capital and proximity effect. Semi-structured interviews (n = 26) reveal a lack of understanding of collaboration benefits alongside leadership and reciprocity among stakeholders. However, due to geographical proximity, the level of stakeholder trust in each other is significant, thus indicating potential for future successful partnerships. For these partnerships to become effective, a system of financial incentives for stakeholders to separate and recycle solid waste in situ should be designed. To improve stakeholder communication and reciprocity, capacity building workshops and round tables can be organised. Municipal authorities should lead on solid waste management, and a steering committee comprising the representatives of all other stakeholders needs to be established to oversee the work of municipal authorities. Lastly, the feasibility of setting private public partnerships for solid waste management in Koh Phayam should be considered given the significant extent of knowledge and trust among local stakeholders. External stakeholders, such as farmers, can be involved in management of organic waste, thus extending the scope of partnerships for sustainability beyond the island. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Carbon footprint assessment of home-stays in Thailand(2021-01-01); Filimonau, ViachaslauHome-stays represent a popular category of tourist accommodation in South-East Asia but their carbon footprint has not been systematically assessed. This hampers an understanding of the energy consumption patterns of home-stays, impedes identification of the main carbon hotspots in home-stay operations and prevents a comparative analysis of the carbon performance of home-stays against other tourist accommodation categories. Using the method of screening Life Cycle Energy Analysis (LCEA), this study assessed the carbon footprint of a sample of home-stays in Thailand and undertook its comparative analysis against other categories of tourist accommodation, globally and in Thailand. The overall annual carbon footprint of home-stays was assessed as low (1.3 tonnes of CO<inf>2</inf>-eq. per home-stay on average) which was due to small size and limited guest amenities. The ‘per guest night’ carbon footprint of home-stays was comparable to that of budget hotels in Thailand (0.32 kg of CO<inf>2</inf>-eq. per home-stay on average) which was attributed to low occupancy driven by high demand seasonality. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, ‘Wasting food is normal!’: How food waste can become the (new) norm in casual dining restaurants(2025-03-01); Filimonau, ViachaslauFood waste is a major societal challenge, and hospitality and foodservice organisations make a significant contribution to its occurrence. Although research on food waste in these organisations is emerging, there remains a limited understanding of the underlying reasons behind managerial inaction on its mitigation. This mixed methods study employs neutralization theory, specifically the concept of normalization of deviance, to examine the sociological impediments of effective food waste mitigation among managers of casual dining restaurants in Bangkok, Thailand (n = 17). The findings delineate the process of how food waste can become perceived by managers as a norm and outline the factors contributing to this normalization, namely repeated personal observations of food waste generation, peer reports and media influence. By understanding the determinants of managerial disengagement with food waste mitigation, the study outlines potential interventions exemplified by the design of educational campaigns, regular food waste audits, set-up of corporate goals on food waste reduction and changes to how food waste is presented in the media. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Development of a university innovation ecosystem assessment model for Association of Southeast Asian Nations universities(2022-12-01) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Impact and policy supporting Thailand innovation driven enterprise: orchestrating university innovation and entrepreneurship ecosystem with public and private stakeholders(2024-12-01) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Analysis of environmental impacts of drone delivery on an online shopping system(2018-09-01)In rural areas, drones are designed to replace road deliveries so as to overcome infrastructure challenges; though drones notably consume less fuel and consequently have a smaller impact on the environment, their full life cycle assessment should still be evaluated to comprehensively understand their environmental impact. This study presents a life cycle assessment study on drone delivery in Thailand using CML2001, the life cycle impact assessment (LCIA) method, to convert life cycle inventory data into environmental impacts. The observed results show that an online shopping system using drone delivery is one of the most environmentally friendly transportation options throughout a wide range of scenarios. However, the parts production contributed to significant impacts on environmental issues while the drone operation showed the least impact to all impact categories. The dominant contributors to global warming, abiotic depletion (ADP elements and fossil), acidification air, eutrophication, ozone layer depletion, and photochemical ozone creation impact categories were the coal mining and electricity generating station operation. However, the carbon fibers and the battery, are the main contributors to other impact categories, which include the human toxicity, freshwater aquatic ecotoxicity, marine aquatic ecotoxicity, and terrestric ecotoxicity. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Empirical implementation of coach-cash-connect mentoring model for innovation-driven enterprises in Thailand: Insights for policy development and sustainable growth(2025-12-01)