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Articles 12181 - 12210 of 15281
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The Influences Of Granite Particle As A Mixing Material Of High-Strength Concrete, May Thazin Khine
The Influences Of Granite Particle As A Mixing Material Of High-Strength Concrete, May Thazin Khine
Chulalongkorn University Theses and Dissertations (Chula ETD)
The aim of this study is to investigate the effect of granite particle on the properties of high strength concrete by the partial substitution as fine aggregate. By grouping two categories as concrete with and without admixture is also performed in this experiment. The granite particle substitution percentage for concrete with admixture is set with 0%, 20%, 30%, 40% and 50% by weight of fine aggregate and 0%, 10%, 15% and 20% by weight of fine aggregate for concrete without admixture. The testing of concrete strength is conducted with compressive, split tensile, flexural, water permeability, and microstructure. The result shows …
Geophysical Site Investigation And Ground Response Analysis Of Bangkok Subsoil Due To Earthquake, Muhammad Fatih Qodri
Geophysical Site Investigation And Ground Response Analysis Of Bangkok Subsoil Due To Earthquake, Muhammad Fatih Qodri
Chulalongkorn University Theses and Dissertations (Chula ETD)
The potential damages on building and infrastructure could be affected by long-distance earthquakes since the vibrations can appear ground motion amplification during the wave propagation. Bangkok urban area is located a hundred kilometers away from the potential area of the earthquake epicenter. However, some people in Bangkok could feel the shaking during the earthquake. It indicates that the long-period shaking could happen during the earthquake. In line with this phenomenon, this study aims to interpret the amplification effect and spectral acceleration in the local site of Bangkok due to remoted earthquakes. The microtremor measurement was conducted at four locations in …
Nonlinear Finite Element Analysis Of Steel Pipe With Stiffener Plate, Rut Su
Nonlinear Finite Element Analysis Of Steel Pipe With Stiffener Plate, Rut Su
Chulalongkorn University Theses and Dissertations (Chula ETD)
This thesis presents the numerical studies of steel hollow section columns connected to corbels under industry crane loads, and the stiffening design using steel plates to enhance the maximum loading capacity against premature local buckling failures. The influences of inelastic material properties and geometry nonlinearity on the overall load carrying capacity of the columns were considered. Square hollow section columns were modelled in 3D using standard eight-node solid finite elements using an ANSYS software. The plate stiffener design algorithm involving variation of plate thicknesses was coded in MATLAB with a direct application programming interface to ANSYS. The full history of …
Mechanical Performances Of Concrete Beams With Hybrid Usage Of Steel And Frp Reinforcement, Linh Van Hong Bui
Mechanical Performances Of Concrete Beams With Hybrid Usage Of Steel And Frp Reinforcement, Linh Van Hong Bui
Chulalongkorn University Theses and Dissertations (Chula ETD)
Fiber-reinforced polymer (FRP) bars have been recently employed to reinforce concrete members due to their high tensile strength and especially in corrosive environments to improve the durability of concrete structures. However, FRP composites have a low modulus of elasticity and a linear elastic behavior up to rupture, thus reinforced concrete (RC) components with such materials would express a lack of ductility. In order to increase the mechanical performances of RC beams, the hybrid usage (also called combined usage) of FRP and steel reinforcements in shear and flexure is proposed. At first, an experimental investigation of concrete beams strengthened in shear …
Strengthening Of Shear Critical Reinforced Concrete Columns By Steel-Rod Collars, Phawe Suit Theint
Strengthening Of Shear Critical Reinforced Concrete Columns By Steel-Rod Collars, Phawe Suit Theint
Chulalongkorn University Theses and Dissertations (Chula ETD)
The inadequate shear strength of the existing old reinforced concrete columns located in the seismically active areas can lead the catastrophic shear failure. In this study, strengthening of shear-critical reinforced concrete columns by the steel-rod collar method is investigated. This proposed method is less intrusive to the existing building components. The steel-rod collar comprises the four sets of welded steel angles connected by steel-rods threaded at the ends. The three specimens were divided into one unstrengthened column, and the two strengthened columns. All the specimens were tested under the constant axial load and the reversed cyclic loadings. In addition, the …
Habal-Habal: Characteristics Of Motorcycle Taxi Users In Metropolitan Manila, Sebastian Mapili Cano
Habal-Habal: Characteristics Of Motorcycle Taxi Users In Metropolitan Manila, Sebastian Mapili Cano
Chulalongkorn University Theses and Dissertations (Chula ETD)
Motorcycle taxi services in the Philippines (locally referred to as habal-habal) has been deemed to be operating only in rural areas wherein public transportation is inadequate or is utterly absent. It is also perceived as illegal and unsafe for urban operations, especially in a conurbation like Metro Manila wherein more than 30% of recorded fatal road accidents come from motorcycles. However, the worsening traffic congestion in the metropolis has spurred its growing urban presence and has led the attention of commuters to alternative modes of transport that are fast, reliable, and affordable. Inadequate understanding of habal-habal's role in the urban …
Risk Management Of Public-Private Partnership (Ppp) Infrastructure Projects In Laos, Siamphone Maneevong
Risk Management Of Public-Private Partnership (Ppp) Infrastructure Projects In Laos, Siamphone Maneevong
Chulalongkorn University Theses and Dissertations (Chula ETD)
Public-private partnership (PPP) is a popular option of project delivery and contractual scheme between the public and private sectors public infrastructure projects. Many factors contribute to the success of PPP projects, most of which are country-specific. Since Laos has recently adopted PPP for several infrastructure projects, all stakeholders must understand the critical risks that influence the performance of PPP projects. In this research, we identify, evaluate and rank the critical risk factors and risk categories that affect the PPP project development of in Laos. The questionnaire survey and In-depth interviews were used to gather information from nine respondents, who represent …
A Study Of Applying Para Rubber Sheets In Railway Track By Using Ballast Box Test, Somkith Dethvongsone
A Study Of Applying Para Rubber Sheets In Railway Track By Using Ballast Box Test, Somkith Dethvongsone
Chulalongkorn University Theses and Dissertations (Chula ETD)
Recently, attempts to reduce ballast degradation have been a major topic for many railways and researchers. Nowadays, a successfully proven alternative is applied elastic under-sleeper pads in between sleeper and ballast particles, and also as the ballast mat placed under the ballast layer. The using of synthetic material as the elastic element is able to decrease the deterioration of ballast and vibrations. Para rubber is a natural elastic material and it is abundant in South East Asia countries. Therefore, this study is aimed to investigate using para rubber as an alternative element of reducing ballast breakage in ballasted track. Experiments …
Poroelastodynamic Solutions Of Transversely Isotropic Multi-Layered Media, Suraparb Keawsawasvong
Poroelastodynamic Solutions Of Transversely Isotropic Multi-Layered Media, Suraparb Keawsawasvong
Chulalongkorn University Theses and Dissertations (Chula ETD)
This dissertation presents poroelastodynamic fundamental solutions of transversely isotropic poroelastic materials. Analytical general solutions for transversely isotropic poroelastic media under time-harmonic loading are derived for plane strain and axisymmetric problems by applying Fourier and Hankel integral transforms respectively. The fundamental solutions for a homogeneous half-space are then explicitly obtained by solving relevant boundary value-problems based on the derived general solutions. An exact stiffness matrix method is also employed based on the present general solutions to determine the fundamental solutions corresponding to multi-layered transversely isotropic poroelastic media. The obtained fundamental solutions are then employed in the analysis of dynamic interaction problems …
Analysis And Optimum Design Of Cold-Formed Steel Arch Structures, Thu Huynh Van
Analysis And Optimum Design Of Cold-Formed Steel Arch Structures, Thu Huynh Van
Chulalongkorn University Theses and Dissertations (Chula ETD)
This research presents the development of a unified framework for cold-formed steel warehouse design at variations of clear roof spans. The work involves the advanced finite element analyses of nonlinear arch-shape warehouse structures, namely one that considers 2nd-order nonlinear geometry effects-sufficiently accurate approximation of large deformation responses. An optimum design procedure of 3D arch steel warehouse structures is conducted with the help of a novel algorithm, called mixed ESO-PSO approach. The generic idea is based on the implementation of a well-known evolutionary structural optimization algorithm (ESO), and further integrates a mapping, underpinning particle swarm optimization (PSO), technique of design variables …
The Effect Of Nac And Carnosine On AlzheimerS Disease-Related In Vitro Model Through Rage-Age Signaling Pathway, Suphasarang Sirirattanakul
The Effect Of Nac And Carnosine On AlzheimerS Disease-Related In Vitro Model Through Rage-Age Signaling Pathway, Suphasarang Sirirattanakul
Chulalongkorn University Theses and Dissertations (Chula ETD)
Alzheimer’s disease (AD) is the most common dementia which found increasing with age. It involves neurodegeneration which leads to various abnormalities especially memory loss, inability to learn new things, lack of creativity, lack of decision making ability, lack of critical thinking, calculation inability, inability to live normal daily life, inability to recognize person, time and place, emotional disturbance, and difficulty to use language. Since AD has severe impact in various aspects on both the patients and their families, so we are interested to study the neurodegenerative mechanism when neuronal cells are under oxidative stress which will induce neuroinflammation through the …
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. …
Adverse Events Of Antiretroviral Prophylaxis Regimen For Elimination And Prevention Of Mother-To-Child Transmission Among Hiv-Exposed Infants, Suvaporn Anugulruengkitt
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 …
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
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 …
Effectiveness And Safety Of Intense Pulsed Light In Patients With Meibomian Gland Dysfunction, Yonrawee Piyacomn
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 …
A Deep Relation Extraction From Biomedical Texts With Attention Mechanisms And Domain-Specific Contextual Representations, Amarin Jettakul
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 …
Knowledge Sharing In Cooperative Compact Genetic Algorithm, Orakanya Gateratanakul
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 …
Explicit Energy-Minimal Short-Term Path Planning For Collision Avoidance In Bidirectional Crowd Simulation, Saran Sillapaphiromsuk
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
Development Of Eeg-Based Emotion Classification Using Deep Learning Networks, Suwicha Jirayucharoensak
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 …
Multi-Paths Quest Generation For Structural Analysis, Thongtham Chongmesuk
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 …
Fully Automatic 3d Facial Cosmetic Surgery Simulation, Adawat Chanchua
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 …
Failure Prediction In Open-Hole Wireline Logging Of Oil And Gas Drilling Operation Using Support Vector Machine., Maylada Pootisirakorn
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 …
A Scalable Shapelet Discovery For Time Series Classification, Nattakit Vichit
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 …
Spark Steaming Framework For Large-Scale Multi-Stream Data Analytics, Tanwa Sirisakdiwan
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 …
Classification Of Risk Attitudes From Customer Behavior With Machine Learning, Teeranai Sriparkdee
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 …
Lightly-Supervised Learning Methods For One-Class Text Classification, Yiping Jin
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. …
A Hotel Hybrid Recommendation Method Based On Context-Driven Using Latent Dirichlet Allocation, Weraphat Nimchaiyanan
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 …
Socio - Economic Determinants Of Teen Pregnancies In Mozambique, Arnaldo Timoteo Mandlate
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 …
Socio-Economic And Demographic Determinants Of Modern Contraceptive Utilization Among Currently Married Women In Myanmar, Kyaw Than Min
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 …
Sex-Composition Of Children And Fertility Desire In Vietnam, Hai Yen Thi Nguyen
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 …