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2018

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Effect Of Ercc1, Xrcc1 And Gstp1 Polymorphisms On Clinical Response And Adverse Events Of Platinum-Based Chemotherapy In Epithelial Ovarian Cancer Patients, Salisa Liblab Jan 2018

Effect Of Ercc1, Xrcc1 And Gstp1 Polymorphisms On Clinical Response And Adverse Events Of Platinum-Based Chemotherapy In Epithelial Ovarian Cancer Patients, Salisa Liblab

Chulalongkorn University Theses and Dissertations (Chula ETD)

Platinum-based chemotherapy is the first line chemotherapy regimen for epithelial ovarian cancer (EOC). Pharmacogenomics is one factor that might affect its efficacy and toxicity. This cohort study was aimed to investigate the association between ERCC1, XRCC1 and GSTP1 polymorphisms on clinical responses and adverse events related to platinum-based chemotherapy in Thai EOC patients. Fifty-two patients with advanced EOC were enrolled in this cohort study. The mean age was 55.7 years old. Genotyping analysis of ERCC1 (C>A, rs3212986), XRCC1 (A>G, rs25487) and GSTP (A>G, rs1695) were performed which allele frequencies were found at 35.6%, 28.9% and 10.6%, respectively. …

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Adverse Events Of Antiretroviral Prophylaxis Regimen For Elimination And Prevention Of Mother-To-Child Transmission Among Hiv-Exposed Infants, Suvaporn Anugulruengkitt Jan 2018

Adverse Events Of Antiretroviral Prophylaxis Regimen For Elimination And Prevention Of Mother-To-Child Transmission Among Hiv-Exposed Infants, Suvaporn Anugulruengkitt

Chulalongkorn University Theses and Dissertations (Chula ETD)

Background: Triple-drug antiretroviral prophylaxis of zidovudine (ZDV)/lamivudine (3TC)/nevirapine (NVP) for high risk HIV-exposed neonates is recommended within the Thai national program. However, there are limited data about the safety and drug concentration achieved with this regimen initiated at birth.
Objectives: This study aims to evaluate the safety of this triple drug neonatal prophylaxis regimen and to describe nevirapine concentration levels during the first 4 weeks of life.
Methods: A prospective cohort of HIV-exposed infants was conducted at 5 clinical sites in Thailand. We enrolled 100 high-risk HIV-exposed neonates (maternal HIV RNA >50 copies/mL prior to delivery or received antiretroviral therapy …

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Neurodevelopmental And Neurobehavioral Outcomes In Early Antiretroviral Treated Young Children With Perinatally-Acquired Hiv Infection (Phiv) Compared To Age-Matched Perinatally Hiv-Exposed Uninfected Children (Pheu), Watsamon Jantarabenjakul Jan 2018

Neurodevelopmental And Neurobehavioral Outcomes In Early Antiretroviral Treated Young Children With Perinatally-Acquired Hiv Infection (Phiv) Compared To Age-Matched Perinatally Hiv-Exposed Uninfected Children (Pheu), Watsamon Jantarabenjakul

Chulalongkorn University Theses and Dissertations (Chula ETD)

Introduction: Although early initiation of antiretroviral therapy (ART) in perinatally HIV infected (PHIV) infants significantly reduces morbidity and mortality, neurodevelopmental and neurobehavioral problems are still issues of concern. Objectives: This study aims primarily to compare neurodevelopmental outcomes and neurobehavioral outcomes between PHIV children who initiated ART within 12 months of life and perinatally HIV-exposed uninfected (PHEU) children. The secondary aims are to assess the outcomes by timing of ART initiation and to delineate factors and predictors associated with neurodevelopmental and neurobehavioral outcomes. Methods: This study was a prospective observational study which enrolled PHIV and PHEU children aged 12-56 months. Neurodevelopmental …

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Effectiveness And Safety Of Intense Pulsed Light In Patients With Meibomian Gland Dysfunction, Yonrawee Piyacomn Jan 2018

Effectiveness And Safety Of Intense Pulsed Light In Patients With Meibomian Gland Dysfunction, Yonrawee Piyacomn

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study aimed to study the clinical effects and safety in terms of symptoms and signs and to evaluate the change in tear inflammatory cytokines in meibomian gland dysfunction (MGD) after 3 sessions of Intense Pulsed Light (IPL) in a prospective randomized double-masked sham-controlled clinical trial. Patients with MGD who met all criteria were randomly assigned into IPL and sham-IPL group. The stratified blocked randomization was done using the MGD gradeas a stratum by computer-generated assistance. Each patient in IPL group underwent 3 sessions of IPL on day 0, 15 and 45. The other group underwent sham-IPL. Both group received …

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A Deep Relation Extraction From Biomedical Texts With Attention Mechanisms And Domain-Specific Contextual Representations, Amarin Jettakul Jan 2018

A Deep Relation Extraction From Biomedical Texts With Attention Mechanisms And Domain-Specific Contextual Representations, Amarin Jettakul

Chulalongkorn University Theses and Dissertations (Chula ETD)

The biomedical relation extraction (RE) tasks aim to study the interaction between pre-defined entities from biomedical literature: Bacteria Biotope (BB) and Drug-Drug interactions (DDI) tasks. Some previous investigations have used feature-based models; others have presented deep-learning-based models such as convolutional and recurrent neural networks used with the shortest dependency paths (SDPs). Although SDPs contain valuable and concise information, sections of significant information necessary to define bacterial location relationships are often neglected. In addition, the traditional word embedding used in previous studies may suffer from word ambiguation across linguistic contexts. Here, we present a deep learning model for biomedical RE. The …

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Knowledge Sharing In Cooperative Compact Genetic Algorithm, Orakanya Gateratanakul Jan 2018

Knowledge Sharing In Cooperative Compact Genetic Algorithm, Orakanya Gateratanakul

Chulalongkorn University Theses and Dissertations (Chula ETD)

The compact genetic algorithm is derived from the genetic algorithm in which the population is represented by the probabilistic vector. To improve the search capability and avoiding local minima, parallelization has been employed where many search processes are deployed concurrently. In order to coordinate the work of multiple processes, knowledge sharing is necessary. Multiple processes share their probabilistic vectors partially. To escape from local minima the restart step is introduced. The experiment compares the proposed algorithm with two other competitive algorithms using Traveling Salesman problem, Bin Packing problem, Subset Sum problem, and Knapsack problem. The results show that the proposed …

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Explicit Energy-Minimal Short-Term Path Planning For Collision Avoidance In Bidirectional Crowd Simulation, Saran Sillapaphiromsuk Jan 2018

Explicit Energy-Minimal Short-Term Path Planning For Collision Avoidance In Bidirectional Crowd Simulation, Saran Sillapaphiromsuk

Chulalongkorn University Theses and Dissertations (Chula ETD)

การหาเส้นทางการเดินในระยะยาวรวมกับการหลบหลีกสิ่งกีดขวางรอบๆ เป็นวิธีทั่วไปที่ถูกนำมาใช้ในการจำลองการเคลื่อนไหวของตัวตนจำลองจากตำแหน่งหนึ่งไปยังอีกตำแหน่งหนึ่ง โดยไม่ให้เกิดการชนกันระหว่างตัวตนจำลองกับวัตถุในฉากและระหว่างตัวตนจำลองด้วยกันเอง วิธีนี้สามารถให้ผลการจำลองที่ดีในสถานการณ์ที่ผู้คนสามารถเดินได้หลายทิศทาง แต่ในสถานการณ์ที่ผู้คนถูกจำกัดทิศทางการเดินให้เหลือเพียงหนึ่งหรือสองทิศทางนั้น ปรากฏว่าตัวตนจำลองมีลักษณะการเดินที่ผิดธรรมชาติ เช่น เดินเข้าไปติดและอยู่นิ่งระหว่างตัวตนจำลองสองตัวที่เดินสวนมาหรือเดินเข้าไปในพื้นที่ที่แออัดหรือมีกลุ่มคนเยอะๆ ทั้งๆที่ยังมีเส้นทางเดินที่ทำให้ตัวตนจำลองสามารถเดินหลบหลีกไปได้ ลักษณะเช่นนี้เกิดขึ้นบ่อยและเห็นได้ชัดในสถานการณ์แบบสองทิศทาง งานวิจัยนี้จึงได้เสนอขั้นตอนในการหาเส้นทางในระยะสั้นเพื่อขจัดความบกพร่องของพฤติกรรมการเดินของตัวตนจำลองในสถานการณ์แบบสองทิศทางนี้ขึ้น โดยใช้สมการพลังงานทางชีวกลศาสตร์ของการเดินเข้ามาเป็นตัวแปรที่บังคับให้ตัวตนจำลองมีความฉลาดในการเลือกเส้นทางในระยะสั้นได้ ผลลัพธ์ของการวิเคราะห์สมการพลังงานนั้น ช่วยบ่งบอกลักษณะของการเลือกเส้นทางการเดินที่ดีที่สุด โดยคำนึงถึงความเร็วที่ใช้เพื่อให้ประหยัดพลังงานที่สุด พร้อมๆ กับถึงจุดหมายปลายทางให้เร็วที่สุดด้วย นอกจากนี้ยังพบว่าการนำวิธีที่เสนอนี้ไปใช้ในสถานการณ์แบบหลายทิศทางนั้น ตัวตนจำลองสามารถหาเส้นทางที่เหมาะสมกว่าเมื่อเทียบกับวิธีก่อนอีกด้วย ยกตัวอย่าง เช่น ตัวตนจำลองสามารถเดินแทรกเข้าไปในช่องแคบๆ ของขบวนพาเหรดได้ เป็นต้น

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Development Of Eeg-Based Emotion Classification Using Deep Learning Networks, Suwicha Jirayucharoensak Jan 2018

Development Of Eeg-Based Emotion Classification Using Deep Learning Networks, Suwicha Jirayucharoensak

Chulalongkorn University Theses and Dissertations (Chula ETD)

Emotion classification is one of essential tasks for Human Computer Interaction (HCI) to make computers more efficiently interact with their users. Electroencephalogram (EEG) signals, associated with cognitive states of emotions, propagate though a complex hierarchy of neuron cells. Therefore, EEG-based emotion classification requires sophisticated learning algorithms that can represent high-level abstraction of a complicated task. This dissertation focuses on applying deep learning networks (DLNs) to enhance accuracy performance of the EEG-based emotion classification system. The DLN provides hierarchical feature learning methodology which is suitable for EEG-related feature learning algorithms. Furthermore, this research investigates the effects of temporal neural dynamics of …

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Multi-Paths Quest Generation For Structural Analysis, Thongtham Chongmesuk Jan 2018

Multi-Paths Quest Generation For Structural Analysis, Thongtham Chongmesuk

Chulalongkorn University Theses and Dissertations (Chula ETD)

Existing quest generation systems that used quest structures had an important limitation. They were not compatible with dynamic environment games, where player actions may have unforeseen repercussion from chain-reaction, such as locking the quest or preventing it from being completed. In addition, quests generated by such systems were not guaranteed to have multiple completion paths.
In this thesis, action-based-objective quests were replaced with game state-based-objective quests, while retaining the previous grammar rule. Each quest's contents and objectives were filled using Token system and Full Condition State system to ensure the connectivity within the quest's contents and to prevent players from …

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Fully Automatic 3d Facial Cosmetic Surgery Simulation, Adawat Chanchua Jan 2018

Fully Automatic 3d Facial Cosmetic Surgery Simulation, Adawat Chanchua

Chulalongkorn University Theses and Dissertations (Chula ETD)

Before cosmetic surgery procedures, the patients are commonly involved in the consultation process using interviews and reference images. The reference images typically consist of pre-post surgery images of other patients, leading to misunderstandings between patients and the surgeon. This thesis presents a fully automatic pipeline to simulate the whole face of post-surgery results. We first establish a 3D face registration and alignment based on the face surgery procedures of the current day and then generate the delta image. We proposed the delta image to solve the lack of dataset dilemma of the pre-post surgery face images. We also propose a …

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Failure Prediction In Open-Hole Wireline Logging Of Oil And Gas Drilling Operation Using Support Vector Machine., Maylada Pootisirakorn Jan 2018

Failure Prediction In Open-Hole Wireline Logging Of Oil And Gas Drilling Operation Using Support Vector Machine., Maylada Pootisirakorn

Chulalongkorn University Theses and Dissertations (Chula ETD)

The failure of open-hole wireline logging leads to an unexpected cost and time that add to drilling operation. The research proposes methods to predict the failure of an open hole wireline logging prior to run the log on actual situation. Three machine learning techniques are used to classify the result of the open-hole wireline logging from drilling process into two classes, a success class and a failure class which represents a well that might have abnormal conditions which can causes the tool stuck during logging. The success class is the normal well that can run logging to target depth without …

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A Scalable Shapelet Discovery For Time Series Classification, Nattakit Vichit Jan 2018

A Scalable Shapelet Discovery For Time Series Classification, Nattakit Vichit

Chulalongkorn University Theses and Dissertations (Chula ETD)

As time series data become more complex and users expect more sophisticated information, numerous algorithms have been proposed to solve these challenges. Among those algorithms to classify time series data, shapelet – a discriminative subsequence of time series data – is considered a practical approach due to its accurate and insightful classification. However, previously proposed shapelet algorithms still suffer from exceedingly high computational complexity, as a result, limiting its scalability to larger datasets. Therefore, in this work propose a novel algorithm that speeds up shapelet discovery process. The algorithm so called "Dual Increment Shapelets (DIS)" is a combination of two-layered …

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Spark Steaming Framework For Large-Scale Multi-Stream Data Analytics, Tanwa Sirisakdiwan Jan 2018

Spark Steaming Framework For Large-Scale Multi-Stream Data Analytics, Tanwa Sirisakdiwan

Chulalongkorn University Theses and Dissertations (Chula ETD)

Real-time streaming applications with multiple heterogeneous data streams have become increasingly popular especially in IoT applications where huge amount of sensors produce large amount of data in the form of data streams. However, many issues still exist, especially in deploying and maintaining these large amounts of data streams. Using Spark Structured Streaming, this research introduces a Spark Streaming framework for multiple heterogeneous data streams which focuses on the ease of deployment and proper scheduling. Our proposed framework is a library that allows the deployment of multiple heterogeneous data stream processing in a single Spark application. Our framework can reduce deployment …

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Classification Of Risk Attitudes From Customer Behavior With Machine Learning, Teeranai Sriparkdee Jan 2018

Classification Of Risk Attitudes From Customer Behavior With Machine Learning, Teeranai Sriparkdee

Chulalongkorn University Theses and Dissertations (Chula ETD)

Every​ product​ and service in​ the market​ has​ its​ characteristic​ which has an impact on a consumer's decision to buy or use them. The risk is a special characteristic of financial products, so in financial product and service design must use risk as a critical factor. On the other hand, the consumer has different attitudes to the risk which can distinguish in 3 categories viz risk aversion, risk neutral and risk seeking. Therefore, knowing risk attitudes of consumer who is the target market is an important key to define marketing strategy such as designing service and product, campaign, and promotion …

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Lightly-Supervised Learning Methods For One-Class Text Classification, Yiping Jin Jan 2018

Lightly-Supervised Learning Methods For One-Class Text Classification, Yiping Jin

Chulalongkorn University Theses and Dissertations (Chula ETD)

This thesis introduces a lightly-supervised learning method to train text classifiers with very little manual labelling effort. We adapt two previous state-of-theart lightly-supervised models, generalized expectation (GE) criteria (Druck et al. (2008)) and multinomial naïve Bayes (MNB) with priors (Settles (2011)) to oneclass classification problem. Users just need to label a handful of keywords for the target category. We also combine the two aforementioned models by letting MNB automatically augment the list of GE constraints. In addition, we ensemble two families of classifiers to improve the accuracy further. We successfully applied our model to a real-world problem of online advertising. …

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A Hotel Hybrid Recommendation Method Based On Context-Driven Using Latent Dirichlet Allocation, Weraphat Nimchaiyanan Jan 2018

A Hotel Hybrid Recommendation Method Based On Context-Driven Using Latent Dirichlet Allocation, Weraphat Nimchaiyanan

Chulalongkorn University Theses and Dissertations (Chula ETD)

Recommender systems play an important role in helping users find items that they want. Normally, ratings are used in content-based filtering (CBF) and collaborative filtering (CF) for recommendation. However, only ratings are not enough for recommendation. Thus, contextual information, context driven and Latent Dirichlet Allocation (LDA) are used to improve recommendation. Also, the context of individual user has changed in the timeline (context-driven). In this work, a hotel hybrid recommendation method (CF+CBF) based on context-driven using LDA is proposed. Firstly, we find missing user ratings of user-hotel rating matrix by applying LDA on user ratings in order to get predicted …

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Socio - Economic Determinants Of Teen Pregnancies In Mozambique, Arnaldo Timoteo Mandlate Jan 2018

Socio - Economic Determinants Of Teen Pregnancies In Mozambique, Arnaldo Timoteo Mandlate

Chulalongkorn University Theses and Dissertations (Chula ETD)

Teen pregnancy is considered a worldwide public health issue. According to United Nations Population Fund (2014), Mozambique was reported to be the country with the highest teen pregnancy rate in the Southern Africa region. From 2011 to 2015, the proportion of pregnant teens rose significantly from 38% to 46% (IMASIDA, 2015). Thereby, it is important to study factors leading to teen pregnancy incidence in order to draw policy recommendations in the issue. Previous studies in Mozambique applied a qualitative approach. This study fills the literature gaps using the binary logistic regression with a national cross- sectional dataset provided by IMASIDA-Demographic …

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Socio-Economic And Demographic Determinants Of Modern Contraceptive Utilization Among Currently Married Women In Myanmar, Kyaw Than Min Jan 2018

Socio-Economic And Demographic Determinants Of Modern Contraceptive Utilization Among Currently Married Women In Myanmar, Kyaw Than Min

Chulalongkorn University Theses and Dissertations (Chula ETD)

The key purpose of this study is to explore socio-economic and demographic characteristics that influence modern contraceptive use of currently married women aged 15-49 in Myanmar. This study is contributing to fill the literature gaps at the national level. Even though there have been a number of studies on modern contraceptive use and family planning in Myanmar, these studies did not represent the whole nation. This study utilizes data from the Myanmar Demographic and Health Survey (MDHS) 2015-16, a national level cross-sectional dataset. Based on the study, the currently married women in this study included 6,597 women in Myanmar, 51 …

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Sex-Composition Of Children And Fertility Desire In Vietnam, Hai Yen Thi Nguyen Jan 2018

Sex-Composition Of Children And Fertility Desire In Vietnam, Hai Yen Thi Nguyen

Chulalongkorn University Theses and Dissertations (Chula ETD)

This thesis aims to investigate whether the variation in sex composition of children can explain the variation of Vietnamese women's fertility desire. Vietnam has experienced rapid fertility decline since the middle of the 20th century but within a broader context of strong cultural norms regarding son preference. Thus, the sex composition of children is one of the key determinants of reproductive behavior within Vietnam. To my knowledge, no previous study has examined the relationship between sex composition of children and women's fertility desires in Vietnam. Using data from the 2014 Vietnam Multiple Indicator Cluster Survey (MICS) I investigate the association …

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Socio Economic Determinants Of Spousal Violence Against Women In Myanmar, Lin Lin Mar Jan 2018

Socio Economic Determinants Of Spousal Violence Against Women In Myanmar, Lin Lin Mar

Chulalongkorn University Theses and Dissertations (Chula ETD)

Nowadays, the violence against women by spouses is a hidden social problem embedded in social and cultural norms in Myanmar. However, there are limited numbers of previous studies regarding spousal violence in Myanmar. Some studies utilized a qualitative approach, while some used a quantitative approach in some parts of Myanmar. This study aims to examine whether socioeconomic and demographic factors affecting spousal violence using a quantitative approach to fill the literature gap at the national level. It uses the data from the 2015-16 Myanmar Demographic and Health Survey. The explanatory variables are demographic and socio-economic characteristics of the women, their …

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Direct And Indirect Impacts Of Education On Subjective Well-Being Of Older Persons In Vietnam : Gender Differences, Truc Ngoc Hoang Dang Jan 2018

Direct And Indirect Impacts Of Education On Subjective Well-Being Of Older Persons In Vietnam : Gender Differences, Truc Ngoc Hoang Dang

Chulalongkorn University Theses and Dissertations (Chula ETD)

Vietnam, like many developing countries, is undergoing a rapid pace of population ageing but within a resource limited context. Therefore, understanding the factors that are important to later life well-being has become a key policy issue. Using data from the 2011 Vietnam National Aging Survey, this thesis aims to investigate gender differences in the direct and indirect impacts of education on subjective well-being of older Vietnamese based on four domains: happiness, life satisfaction, loneliness, and depression (N=2,789, including 1,683 females and 1,106 males). The results from path analysis show that those with higher level of education are happier and more …

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Impact Of Migration And Remittances On Children's Human Capital In Cambodia, Vatana Chea Jan 2018

Impact Of Migration And Remittances On Children's Human Capital In Cambodia, Vatana Chea

Chulalongkorn University Theses and Dissertations (Chula ETD)

This dissertation investigates the impacts of migration and remittances on human capital development of left-behind children in Cambodia. It contributes new evidence to a controversial debate in the literature on long-term impacts of migration and of remittances on the children. This is from the perspective of education, health, and consumption in remittance-recipient households compared with those in non-recipient ones. It relies on pooled data from Cambodia Socio-Economic Survey of 2009 and 2014, each of which comprises around 12,000 households in both rural and urban areas across all 25 provinces there. To evaluate the impact on household educational investment, the study …

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Determinants Of Labor Force Participation Among Older Persons In Myanmar, Zaw Min Latt Jan 2018

Determinants Of Labor Force Participation Among Older Persons In Myanmar, Zaw Min Latt

Chulalongkorn University Theses and Dissertations (Chula ETD)

Population ageing is occurring in many parts of the world. Likewise, in Myanmar, population is ageing with a fast acceleration. The government is trying to find ways to improve wellbeing of older persons, and labour force participation is one of the important factors to reduce financial insecurity during old age. This study aims to investigate the situation of labour force participation and to identify the demographic and economic factors that influence the decision making of older people to join the labour force in Myanmar. This study uses dataset from the 2012 Survey of Older Persons in Myanmar which is nationally …

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Development Of Graphene Oxide/Silver Nanocomposite Coating On Niti Alloy For Biomedical Applications, Dinesh Rokaya Jan 2018

Development Of Graphene Oxide/Silver Nanocomposite Coating On Niti Alloy For Biomedical Applications, Dinesh Rokaya

Chulalongkorn University Theses and Dissertations (Chula ETD)

The study aimed to evaluate the surface, mechanical, and biological properties of graphene oxide/silver nanocomposite (GO/Ag) coated NiTi alloy. Substrates were coated using the electrophoretic deposition at 30 V for 1, 5, and 10 min, and were characterized by scanning electron microscope, Raman spectroscopy, energy dispersive spectroscopy, surface profilometer, and atomic fluoroscope force microscopy (AFM). Hardness, modulus of elasticity, and friction were done and surface adhesion was measured from AFM. Biocompatibility testing was done on human gingival fibroblasts using 3-[4,5-dimethylthiazol-2-yl]-2, 5-diphenyltetrazolium bromide (MTT) assay. Data were analyzed using SPSS 16; One-way ANOVA with post hoc Scheffe Test (P = 0.05). …

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Using N-Alkane As A Proxy To Reconstruct Paleoenvironment In Thale Noi, Phatthalung Province, Assuma Sainakum Jan 2018

Using N-Alkane As A Proxy To Reconstruct Paleoenvironment In Thale Noi, Phatthalung Province, Assuma Sainakum

Chulalongkorn University Theses and Dissertations (Chula ETD)

Normal alkane (n-alkane) is the widely used hydrocarbon proxy for the paleoenvironmental study because of their specific characteristic and resistance to microbial degradation. The n-alkanes from the sediment cores TLN-CP5 and TLN-CP7 from Thale Noi, Phatthalung Province, were analyzed and subsequently compared with those derived from the recent plant samples. The plant samples were taken from mangrove forests, i.e. true mangrove, back mangrove, and mangrove associate, based on the previous study on pollen analysis. The n-alkane distributions, the average chain length (ACL), the carbon preference index (CPI) and the proportion of aquatic components (Paq) were further analyzed in order to …

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Lithological Classification By Deep Learning Algorithm, Worapop Thongsame Jan 2018

Lithological Classification By Deep Learning Algorithm, Worapop Thongsame

Chulalongkorn University Theses and Dissertations (Chula ETD)

Six machine learning algorithms are used to classify subsurface rocks based on fifteen well logging features from four geothermal wells in the Snake River Plain, Idaho, USA. Two experimental designs, single- and multiple-well tests, are developed to determine the most optimal model and hyperparameters. The single-well test randomly assigns the data in each well into 70% for training set, 10% for validation set, and 20% for test set. The multiple-well test combines data from three wells and splits the data in the fourth well into 70% for training set, 10% for validation set, and 20% for test set. Results show …

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How Far From The Train Station Should We Tax? An Empirical Study Based On Value Capture Method, Nanthawat Ouysinprasert Jan 2018

How Far From The Train Station Should We Tax? An Empirical Study Based On Value Capture Method, Nanthawat Ouysinprasert

Chulalongkorn University Theses and Dissertations (Chula ETD)

This research aims to present a way to earn income for the government through the expansion of the property tax base. It basically collects tax from the asset owners that benefit from the increased value in the development of public infrastructure. There are two important objectives: First, the author wants to analyze the economic impact that occurs from the presence of the train station and other relating factors on the value of housing. Second, the author desires to apply the value capture method to create a tax model. The sample group is 511 residential buildings located within a radius of …

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What Would You Do, If I Get More? An Experimental Test On The Consequences Of Envy, Nattawut Hunyek Jan 2018

What Would You Do, If I Get More? An Experimental Test On The Consequences Of Envy, Nattawut Hunyek

Chulalongkorn University Theses and Dissertations (Chula ETD)

Envy is an unpleasant emotion characterised by the feelings of inferiority, hostility, and resentment produced by an awareness of another person or group of persons who enjoy the desired possession which can motivate the envious person in two different paths, destructive (named malicious envy) and competitive (benign envy). This research presents an experimental design which involves real-effort task to study the quantitative difference between both types of envy. The results show that envy may incentivise subject to do both competitive and destructive things to make them feel better after realising their lower position. The self-position and reference agent position are …

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Reactive Power Management In A Distribution System By Photovoltaic Inverter, Akasinh Luangduangsitthideth Jan 2018

Reactive Power Management In A Distribution System By Photovoltaic Inverter, Akasinh Luangduangsitthideth

Chulalongkorn University Theses and Dissertations (Chula ETD)

Nowadays the electrical generation from the solar photovoltaic resource is extensively promoted because of the concern about greenhouse gas emission. A distribution system can be powered by a variety of solar photovoltaic resources, and can be used for various objectives, it can improve voltage profile problems and can reduce real power losses of the upgrading process of transmission and distribution system. However, presence much of the PV system may have detrimental impacts on the operation of the distribution system because of the variation of solar photovoltaic increases. This thesis proposed the optimal reactive power control modes by PV inverters when …

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Coordination Between Central And Local Control Of Photovoltaic Generation System For Controlling Voltage Violation And Unbalance In Distribution Systems, Anuwat Chanhome Jan 2018

Coordination Between Central And Local Control Of Photovoltaic Generation System For Controlling Voltage Violation And Unbalance In Distribution Systems, Anuwat Chanhome

Chulalongkorn University Theses and Dissertations (Chula ETD)

Solar energy is a clean and pollution-free energy. Economic growth has led to increased demand for electricity in many countries, which has encouraged the installation of solar power generation systems, especially in LV distribution system. Households have the potential to install solar power generation systems because the costs of installation and maintenance have been continuously decreased. However, when there are many connected solar power generation systems in LV distribution system, the following problems may occur: (1) Loss of real power generation due to the operation of overvoltage protection of solar power generation systems, especially the ones on downstream nodes and …

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