Tiyarattanachai, Ronnachai
Loading...
Preferred name
Tiyarattanachai, Ronnachai
Main Affiliation
Email
ronnachai.ti@kmitl.ac.th
12 results
Now showing 1 - 10 of 12
- Some of the metrics are blocked by yourconsent settings
Item type:Publication, Feasibility of Reverse Vending Machine for PET Bottle Recycling in Case of ABC Hypermarket(2024-01-03); The prevalence of polyethylene terephthalate (PET) in beverage packaging has increased microplastic (MP) accumulation in the environment. MP can become a component of air pollution, especifically of particulate matter with a diameter of less than 2.5 microns (PM2.5). Unfortunately, Thailand has a low recycling rate for plastic bottles, with only 4.5% being recycled. Reverse Vending Machines (RVMs) were introduced in the early 2010s as a potential solution to this problem. RVMs incentivize recycling by providing rewards or refunds for each bottle deposited, thereby reducing the amount of PET waste and MP in the environment. This study analyzed usage and waste collection data from RVMs located at 15 locations of a hypermarket chain in Thailand from June 2020 to December 2022. The results showed that the average PET bottles collected from each machine was approximately 670 kg per year, which was lower than the break-even point of 3,200 kg per year. Economic feasibility indicators also suggested that the use of RVMs might not be economically sound. This study proposed suggestions to improve the business model of RVMs and offered policy recommendations to the government on how to enhance the effectiveness of RVMs. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Perspectives of Thai Listed Companies on the United Nations' Sustainable Development Goals(2019-05-16); Chhang, RadyThe UN 2030 Agenda for Sustainable Development encourages both public and private sectors to contribute in achieving the 17 Sustainable Development Goals (SDGs), which include 169 targets covering all social, economic, and environmental dimensions. Thai government incorporated SDGs as the key agenda to be addressed in its 12<sup>th</sup> National Economic and Social Development Plan and the 20-yr National Strategy. The government has to rely on private sector's contribution to achieve the national targets. In the past few years, the Stock Exchange of Thailand (SET) and some Thai listed companies have been very active in promoting sustainability practices; however, their understanding and contribution to the SDGs remain unclear. This study investigated their perspectives, policy, and planned actions towards SDGs using structural equation modelling technique. The results show that investor is the key driver for SDGs and can influence business strategies of companies towards achieving the SDGs. The findings can contribute to understanding current directions and conditions of Thai listed companies to integrate government sustainability policies in their business strategies. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Applying Systems Approach the Case Study of Tertiary Education Institutions in Thailand(2019-05-14) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Consumer perspectives on premium price of ecologically friendly product: A case study of ophthalmic lens in Thailand(2019-05-16) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Green Campus initiative and its impacts on quality of life of stakeholders in Green and Non-Green Campus universities(2016-12-01); Hollmann, Nicholas M.In 2010, Universitas Indonesia (UI) developed the UI GreenMetric World University Ranking for universities to share information about their sustainability practices. This ranking system was well aligned with the basis of Sustainability for Higher Education. The scoring system can also be used as a guideline for universities to achieve sustainability in their campuses. Since its first launch, more universities around the world have increasingly participated in the ranking system including many universities in Thailand. This study compared perception of stakeholders in Green Campus and Non-Green Campus universities in Thailand regarding stakeholders’ satisfaction on sustainability practices and perceived quality of life at their campuses. The results showed that stakeholders at the studied Green Campus University were more satisfied and had significantly better perceived quality of life compared to stakeholders from the studied Non-Green Campus university. The results suggested that universities should adopt the criteria set in the UI GreenMetric World University Ranking to achieve better sustainability in their campuses and improve quality of life of their stakeholders. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Development of an Assessment Tool for Prioritizing Influencing Factors of Sustainability in Higher Education(2020-01-01) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Factors influencing the usage of bicycles on university campuses: A case study of universities in Thailand(2023-12-01); University campuses usually consist of many buildings with different functions, e.g., classrooms, laboratories, offices, and cafeterias. In turn, students and university employees may commute between these buildings several times a day. Organizing in-campus transportation suitable for the campus’ characteristics and the travel behavior of the community is, therefore, a critical and challenging task. This paper focuses on using a bicycle as a mode of transport on university campuses. We analyzed the traveler's demographic, behaviors, and their attitudes toward cycling by conducting a survey covering students, faculty, and staff in several universities. In total, we have collected 1,433 responses from 19 universities across Thailand. According to the responses, most undergrad students use motorcycles and public transport as their primary modes of transport. In contrast, postgrad students, faculty, and staff mainly use private cars. Only 2.9% of all respondents use bicycles regularly. By applying Binary Logistic Regression to the responses data, we found that the demographic factors, including residency and mode of transport, are important determinants of bicycle use on university campuses. Also, lacking dedicated bicycle lanes and long travel times are main obstacles preventing people from cycling within university campuses. Based on these results, the study suggests that improving the availability and accessibility of bicycle facilities could encourage more people to use bicycles as a sustainable mode of transport on university campuses. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, International Freight Transportation Problems under GMS-CBTA: Case Study of Thailand-Cambodia(2019-10-25); The governments of Thailand and Cambodia have enacted a policy under the GMS agreement to facilitate and increase trade and transport capacity. One of the key components is to improve land transport performance on the designated routes between Bangkok and Phnom Penh under the GMS-CBTA. However, the policy has not been considered effective as expected because licensed logistic companies still do not use that privilege. They also use the traditional method in which cargo is transhipped by local trucks at the borderline. In light of the problem, this study systematically investigated the root causes of the agreement ineffectiveness. Some recommendations for improving the performance of operation are given. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Development of an assessment tool for prioritizing influencing factors of sustainability in higher education(2020-08-31) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Locally Designed Campus Smart Bike Sharing System: Lessons Learned and Design Optimization for Thailand(2020-04-01); Bike-sharing systems have been widely implemented in around 700 cities worldwide since the 2000s. The quick expansion is due to the growing concerns over environmental impacts and climate change problems. Bicycles are deemed to be a promising mode of transportation for achieving urban sustainability and sustainability in higher education. Sustainable transportation is an important factor in achieving the UN's Sustainable Development Goals. In Thailand, a bike-sharing service was first launched in Bangkok in 2012. However, bike-sharing in Thailand heavily relied on systems designed and operated by international companies. Many systems have not been very successful and some were discontinued. We discuss lessons learned from a locally designed bike-sharing system and its optimization for a Thai university. A pilot-scale of public bicycles was launched and over 24,000 trips were observed in six months. Most trips were 0-10 minutes and peak hours were in the morning, which means most students picked up the public bike on the last-mile based on study timetable. From heat maps of bicycle usage, nearly educational buildings and connecting transit points had the highest departure and arrival rates.