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Application of the Artificial Neurons Networks for Runoff Forecasting in Sungai Kolok Basin, Southern Thailand

  • Mama, Ruetaitip;Namsai, Matharit;Choi, Mikyoung;Jung, Kwansue
    • 한국수자원학회:학술대회논문집
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    • 한국수자원학회 2016년도 학술발표회
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    • pp.259-259
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    • 2016
  • This study examined Artificial Neurons Networks model (ANNs) for forecast flash discharge at Southern part of Thailand by using rainfall data and discharge data. The Sungai Kolok River Basin has meant the border crossing between Thailand and Malaysia which watershed drains an area lies in Thailand 691.88 square kilometer from over all 2,175 square kilometer. The river originates in mountainous area of Waeng district then flow through Gulf of Thailand at Narathiwat Province, which the river length is approximately 103 kilometers. Almost every year, flooding seems to have increased in frequency and magnitude which is highly non-linear and complicated phenomena. The purpose of this study is to forecast runoff on Sungai Kolok at X.119A gauge station (Sungai Kolok district, Narathiwat province) for 3 days in advance by using Artificial Neural Networks model (ANNs). 3 daily rainfall stations and 2 daily runoff station have been measured by Royal Irrigation Department and Meteorological Department during flood period 2000-2014 were used as input data. In order to check an accuracy of forecasting, forecasted runoff were compared with observed data by pursuing Coefficient of determination ($R^2$). The result of the first day gets the highest accuracy and then decreased in day 2 and day 3, consequently. $R^2$values for first day, second day and third day of runoff forecasting is 0.71, 0.62 and 0.49 respectively. The results confirmed that the ANNs model can be used when the range of collected dataset is short and real-time operated. In conclusion, the ANNs model is suitable to runoff forecasting during flood incident of Sungai Kolok river because it is straightforward model and require with only a few parameters for simulation.

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Morphological and Molecular Identification of Stellantchasmus dermogenysi n. sp. (Digenea: Heterophyidae) in Thailand

  • Wongsawad, Chalobol;Nantarat, Nattawadee;Wongsawad, Pheravut;Butboonchoo, Preeyaporn;Chai, Jong-Yil
    • Parasites, Hosts and Diseases
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    • 제57권3호
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    • pp.257-264
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    • 2019
  • We tried a series of morphological and molecular approaches to identify a new species of Stellantchasmus (Digenea: Heterophyidae) originating from the wrestling half-beaked fish, Dermogenys pusillus of Thailand. Adult worm samples of the new species were recovered from hamsters experimentally infected with the metacercariae from D. pusillus in Thailand. Two isolates (Thai and Korean) of Stellantchasmus falcatus were used as comparative control groups. Worm samples of 3 Stellantchasmus groups were morphologically observed and molecularly analyzed with the mitochondrial cytochrome c oxidase 1 gene. The morphological characteristics of S. dermogenysi n. sp. are similar to S. falcatus originating from brackish water fish, but minor difference was noted including the absence of the prepharynx, position of the ovary near the ceca end, smaller body size, and shorter esophageal length. A phylogenetic tree derived from neighbor-joining and maximum-likelihood methods suggests that S. dermogenysi n. sp. is separated from S. falcatus supported by high bootstrap values. The relative divergences persist between these host-specific trematodes, which we suggest should be recognized as 2 distinct species. Comparisons of S. dermogenysi n. sp. with S. falcatus isolated from mullets in Thailand and Korea indicate a genetic divergence of mitochondrial DNA of 19.4% and 21.7%, respectively. By the present study, a new species, Stellantchasmus dermogenysi n. sp. (Digenea: Heterophyidae), is proposed in Thailand based on molecular evidences, in addition to minor morphological differences between S. falcatus and the new species.

인도네시아와 태국의 Bandicota indica 폐장조직에서 분리된 한타바이러스의 분자생물학적 특징 (Molecular Characterization of Hantavirus Isolates from Bandicota indica Captured in Indonesia and Thailand)

  • 주용규;;송대용;우영대;;;이호왕
    • 대한바이러스학회지
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    • 제30권3호
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    • pp.203-210
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    • 2000
  • Hantaviruses are etiologic agents of hemorrhagic fever with renal syndrome (HFRS) and hantavirus pulmonary syndrome (HPS) in the world. Various hantaviruses were isolated from HFRS patients and several different rodent species in the world. Four hantavirus isolates from Indonesia and three isolates from Thailand among 89 Bandicotas captured in Yogyakarta, east region of Sumatra island, Indonesia and at Chiang Mai in Thailand during 1996 were made through several passages in Vero E6 cells. Viral genome M segment from two Indonesian isolates and three Thailand isolates were amplified using hantavirus generic primers of the M segment and cloned into pCRII vector. The genetic differences were analyzed by comparison of partial sequence of the M segment and antigenic differences were made by IFA. Nucleotide sequence homology of two isolates BC 8, BC 34 from Indonesia and two isolates thai 1322, thai 1330 to Seoul virus was 99% and 96%, respectively, but Thai 1164 was 80%Thai 1164 strain has shown 95% homology to Thai 749 virus. In conclusion it is indicated that two different serotype hantaviruses, Seoul and Thailand, are cocirculating among Bandicota in Thailand, in contrast Seoul serotype virus is circulating in Indonesia.

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태국 전력/에너지 체제의 경로 형성과 지속가능성 평가 (The Path Formation of Thailand's Electricity/Energy Regime and Sustainability Assessment)

  • 엄은희;신동혁
    • 동남아시아연구
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    • 제27권4호
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    • pp.1-40
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    • 2017
  • 본 연구는 메콩 유역 내 최대의 전력/에너지 소비 국가인 태국의 전력/에너지 체제를 살펴보는 것을 목적으로 한다. 태국의 전력/에너지 인프라 정책은 국경 내에서 머무는 것이 아니라 메콩유역국가들간, 더 나아가 아세안의 전력교류 및 경제통합과도 긴밀한 연계를 맺고 있다. 따라서 본 연구는 태국의 국내적 차원(national level)뿐만 아니라 대륙부 메콩을 아우르는 지역적 차원(sub-regional level)에서 태국의 전력/에너지 체제가 어떻게 형성되었고 현재까지 변화되어 왔는지까지 검토하였다. 한편, 2015년 파리협정을 기점으로 출범하게 될 신(新)기후체제 하에서 선진국뿐만 아니라 개발도상국도 기후변화 대응에 대한 자발적 책임과 감축의 의무가 주어진 만큼 태국도 기존의 전력/에너지 정책의 수정이 불가피해졌다. 따라서 우리는 태국의 최근 에너지 정책을 검토함으로써 지속가능한 에너지 체제로의 전환 가능성을 평가해보았다. 또한 태국의 시민사회가 국가의 전력/에너지 계획 설정에 미친 영향을 살펴봄으로써 향후 태국의 에너지와 기후변화 분야에서 시민사회의 역할에 대한 논의를 전개하였다. 분석 결과 먼저 태국의 전력/에너지 체제는 냉전 시대 하에서 미국 등 서방세계의 지원으로 급속 성장하였음을 확인할 수 있었다. 특히 이 과정에서 태국전력공사(EGAT)는 태국 에너지 정책에 있어 핵심적인 행위자로 작용하였다. 또한, 태국의 지리적 위치와 주변 국가에 비해 상대적으로 높은 경제 수준은 향후 지역 내 전력망 구축에 있어서도 그 중요성이 계속 부각될 전망이다. 다른 한편, 2015년에 수립된 태국통합에너지청사진을 에너지 트릴레마의 분석틀로 검토한 결과 태국은 여전히 환경적 지속가능성 측면에서 취약점을 드러내고 있어 지역적 차원의 환경적 고려가 필요함을 확인할 수 있었다. 마지막으로 태국의 시민사회는 지금까지 다양한 방식으로 국가의 전력/에너지 정책 및 기후변화 정책에 영향을 미쳐왔으나, 2014년 쿠데타 이후 그 움직임이 많이 둔화된 상태이다. 결론적으로 본 연구는 태국뿐 아니라 메콩 지역의 지속가능한 전환을 위하여, 태국의 현 전력/에너지 체제와 정책 방향에 대한 지속적 관찰을 제안하며, 이를 위해 태국 및 메콩지역의 정부 뿐 아니라 시민사회 진영과 다양한 노력에 협조할 필요가 있음을 제안한다.

A Design of Two-mode Controller Using PC-based Lookup Table Technique and PID Control Algorithm

  • Julsereewong, Prasit;Sangjeen, Naowarat
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2002년도 ICCAS
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    • pp.46.1-46
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    • 2002
  • $\textbullet$ Abstract $\textbullet$ Introduction $\textbullet$ Liquid Level Control System $\textbullet$ Flow Ratio Control System $\textbullet$ Application of Lookup Table Technique $\textbullet$ Experimental Results $\textbullet$ Conclusion

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Review and Current Status of Opisthorchis viverrini Infection at the Community Level in Thailand

  • Kaewpitoon, Natthawut;Kootanavanichpong, Nusorn;Kompor, Ponthip;Chavenkun, Wasugree;Kujapun, Jirawoot;Norkaew, Jun;Ponphimai, Sukanya;Matrakool, Likit;Tongtawee, Taweesak;Panpimanmas, Sukij;Rujirakul, Ratana;Padchasuwan, Natnapa;Pholsripradit, Poowadol;Eksanti, Thawatchai;Phatisena, Tanida;Loyd, Ryan A;Kaewpitoon, Soraya J
    • Asian Pacific Journal of Cancer Prevention
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    • 제16권16호
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    • pp.6825-6830
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    • 2015
  • Opisthorchis viverrini is remains a public health problem in Thailand, particularly in the northeast and north regions which have the highest incidences of chonalgiocarcinoma (CCA). O. viverrini causes the disease opithorchiasis, and its has been classified as a group 1 biological carcinogen. Humans, dogs, and cats become infected with O. viverrini by ingesting raw or undercooked fish containing infective metacercariae. The first human cases of O. viverrini infection were reported in Thailand 100 years ago, and it's still a problem at the community level. Based on data for the year 2009, more than 6 million people were infected with O. viverrini. Associated medical care and loss of wages in Thailand costs about $120 million annually. This review highlights the current status of O. viverrini infection in communities of Thailand through active surveillance for the five years period from 2010 and 2015. A total of 17 community-based surveys were conducted, most in the northeast region. Some 7 surveys demonstrated a high prevalence over 20%, and the highest was 45.7%. Most commonly infection was found in age group of 35 years and older, males, and agricultural workers. Although, the national prevalence may be decreasing but the results show that the O. viverrini infection is still high in communities of the northeast region. Therefore, the focus in populations living in northeast Thailand should be screening of infection and changing their eating behavior.

Advantages and Disadvantages of a Cashless System in Thailand during the COVID-19 Pandemic

  • YAKEAN, Somkid
    • The Journal of Asian Finance, Economics and Business
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    • 제7권12호
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    • pp.385-388
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    • 2020
  • At present, the payment system in Thailand changes from a paper-based system to a cashless payment system. A coin has its two sides, so the cashless payment has its advantages and disadvantages. This article describes the general advantages and disadvantages of a cashless society in Thailand in the COVID-19 situation. The cashless payment in Thailand consists of credit cards, automated teller machines, direct debit, mobile/Internet banking, e-Wallet, PromptPay, and QR code. The cashless payment is able to assist the government for tax collection accuracy and facilitates users to make financial transactions more transparent and efficient. In addition, the cashless system provides benefits to businesses in which they are able to increase sales and expand business by providing convenient, safe and faster services to customers in making payment for goods/services. It assists businesses to save time and cost of cash management and reduce the paperwork. The cashless payment made the life of students, housewives, and elderly people very easy to carry out financial transactions and there is no need to meet the financial institution staff. This payment system needs advanced technology system skills, a smartphone, and a technology facility. Finally, the cashless payment can reduce the spreading of COVID-19.

태국 전통주택의 평면적 특성에 대한 고찰 - 중부, 북부 지방을 중심으로 - (A Study on Planning of The Thai Traditional House - Focus on Central and Northern Region -)

  • 주서령;김보미
    • 한국주거학회:학술대회논문집
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    • 한국주거학회 2011년도 춘계학술발표대회 논문집
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    • pp.97-102
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    • 2011
  • The characteristics of traditional Thai houses are post-and-beam structure, lifted floor on pillars, and gabled roof as like as houses in other Southeast Asia countries. However 'charn', connective terrace among each room, is the most unique element in Thai houses which make the area under the 'charn' cool and useful. In Thailand, there are number of housing types caused by historic, social, cultural and geographic factors. This research is focused on comparative study of planning of traditional Thai houses of central and northern region, which have the biggest differences in between. Thai traditional house in central region has symmetrical arrangement on layout and when family members are added, they extend 'charn' and attach another building. While in Northern region, the 'charn' is located not in the center and in the front, and the direction of the main building is perpendicular to the length direction of the veranda. This research has a limitation to be generalized because just two region in Thailand were analyzed and the numbers of case studies were few. Nevertheless, we expect this paper to be a primary guidance to understand Thai traditional houses and we also expect that our research area will cover the all areas in Thailand and finally expand to conclude the commonality and diversity of traditional houses in Southeast Asia in the future.

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Urinary Mercury Levels Among Workers in E-waste Shops in Nakhon Si Thammarat Province, Thailand

  • Decharat, Somsiri
    • Journal of Preventive Medicine and Public Health
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    • 제51권4호
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    • pp.196-204
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    • 2018
  • Objectives: To determine urinary mercury levels in e-waste workers in Southern Thailand and the airborne mercury levels in the e-waste shops where they worked, to describe the associations between urinary and airborne mercury levels, and to evaluate the prevalence of mercury exposure-related health effects among e-waste workers. Methods: A cross-sectional study was conducted by interviewing 79 workers in 25 e-waste shops who lived in Nakhon Si Thammarat Province, Thailand. Information on general and occupational characteristics, personal protective equipment use, and personal hygiene was collected by questionnaire. Urine samples were collected to determine mercury levels using a cold-vapor atomic absorption spectrometer mercury analyzer. Results: The e-waste workers' urinary mercury levels were $11.60{\mu}5.23{\mu}g/g$ creatinine (range, 2.00 to $26.00{\mu}g/g$ creatinine) and the mean airborne mercury levels were $17.00{\mu}0.50{\mu}g/m^3$ (range, 3.00 to $29.00{\mu}g/m^3$). The urinary and airborne mercury levels were significantly correlated (r=0.552, p<0.001). The prevalence of self-reported symptoms was 46.8% for insomnia, 36.7% for muscle atrophy, 24.1% for weakness, and 20.3% for headaches. Conclusions: Personal hygiene was found to be an important protective factor, and should therefore be stressed in educational programs. Employers should implement engineering measures to reduce urinary mercury levels and the prevalence of associated health symptoms among e-waste workers.