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Articles 691 - 720 of 2268
Full-Text Articles in Physical Sciences and Mathematics
Convergence Of Trinomial Formula For Call Option Prices, Yuttana Ratibenyakool
Convergence Of Trinomial Formula For Call Option Prices, Yuttana Ratibenyakool
Chulalongkorn University Theses and Dissertations (Chula ETD)
The binomial formula given by Cox, Ross and Rubinstein (1979) is a tool for valuating the call option price. It is well known that the price from binomial formula converges to the price from Black-Scholes formula which was given by Black, Scholes and Merton (1973) as the number of periods (n) converges to infinity. In 1988, Boyle introduced the trinomial formula which is another tool for calculating call option price. He considered the trinomial formula in the case that the rising rate of a stock price is u = e λσ√T n and the falling rate of the stock price …
Tolerance-Localized And Control-Localized Solutions To System Of Interval Linear Equations, Kanokwan Burimas
Tolerance-Localized And Control-Localized Solutions To System Of Interval Linear Equations, Kanokwan Burimas
Chulalongkorn University Theses and Dissertations (Chula ETD)
In this thesis, we are interested in a system of interval linear equations Ax=b whose coefficient A and right hand side b vary in some real intervals. We study two types of solutions called tolerance--localized and control--localized solutions of interval linear equations system. The characterizations of each solution are proposed in two main theorems. First, the proposed theorem is stated in terms of center and radius matrices which is directly proved by following their definitions. The other theorem is presented as magnitude sense with new notation. Based on the second theorem, the closed form of all solution sets is released. …
Sexual Behaviors Of Indochinese Long-Tailed Macaque Macaca Fascicularis In Comparison With Sundaic Long-Tailed Macaque, Prangmas Kumpai
Sexual Behaviors Of Indochinese Long-Tailed Macaque Macaca Fascicularis In Comparison With Sundaic Long-Tailed Macaque, Prangmas Kumpai
Chulalongkorn University Theses and Dissertations (Chula ETD)
Regarding to the previous studies reported that the past hybridization event between rhesus (Macaca mulatta; Mm) and long-tailed (M. fascicularis; Mf) macaques was occurred by the southward introgression of male Mm into Mf population, thus the Mf originating from Indochinese region carried higher level of genetic admixture of Mm ancestry than the Mf living in Sundaic region. Since it was reported that Mf are non-seasonal breeder while Mm are seasonal breeder, thus, it is interesting to compare the sexual behaviors between Indochinese and Sundaic Mf. Mf populations at Wat Haad Moon Kra Beau, Pichit province (WHM; 16° 51′N) and Khao …
Synthesis Of Sulfonamide Chalcones As Α-Glucosidase Inhibitors, I Putu Sukanadi
Synthesis Of Sulfonamide Chalcones As Α-Glucosidase Inhibitors, I Putu Sukanadi
Chulalongkorn University Theses and Dissertations (Chula ETD)
Diabetes mellitus occurs from deficiencies in insulin secretion or insulin resistance which leads over time to high risk for long-term macro-and microvascular complications. Diabetes mellitus type 2 contributes to more than 90% of all cases worldwide. One approach of treatment for this disorder is utilizing α-glucosidase inhibitors. Certain sulfonamides and chalcones are considered as viable candidates that are effective in reducing hyperglycemia. Forty-seven sulfonamide chalcones were synthesized by the Claisen-Schmidt reaction with various substituents on the A, B, and C-rings furnishing the desired products with 50-95 %yield. All compounds were-tested for α-glucosidase inhibitory activity. Twenty-nine compounds exhibited a very strong …
Discrete-Time Risk Model Based On Zero Inflated Poisson Time Series, Siwarak Sawongnam
Discrete-Time Risk Model Based On Zero Inflated Poisson Time Series, Siwarak Sawongnam
Chulalongkorn University Theses and Dissertations (Chula ETD)
An important goal of actuary is to develop models for company portfolio and insurance products. Risk measurement is one of the essential measures that inform actuaries and risk managers about the degree to which the risk bearing entity. To have precise risk measure, we require an appropriate claim count process. The common claim count processes are usually constructed from the Poisson distribution. However, insurance data have generally excess zeros which causes the overdispersion. This violates the assumption of the Poisson distribution. Therefore, alternative distributions accommodating zero count are explored in literature. The zero inflated Poisson distribution is one of the …
Effects Of Soil Composition, Surfactant Structure And Washing Conditions On Diesel Contaminated Soil Removal Efficiency Using Micellar Solution, Angkana Jantanaprasartporn
Effects Of Soil Composition, Surfactant Structure And Washing Conditions On Diesel Contaminated Soil Removal Efficiency Using Micellar Solution, Angkana Jantanaprasartporn
Chulalongkorn University Theses and Dissertations (Chula ETD)
Surfactant solutions are commonly used for the remediation of petroleum-contaminated soil due to their good petroleum removal performance, time-saving capability, and cost effectiveness. However, applying surfactants in excess concentrations could make oil recovery difficult. Moreover, residual surfactants in soil are toxic to microorganisms and plants. Thus, it is crucial to identify a suitable surfactant concentration for soil washing applications. The main objective of this study was to evaluate the effect of soil composition (sand, silt, clay and organic matter), surfactant structure (Tween 20, 40, 60 and 80, and Tergitol 15-S-7, 9 and 15). Subsequently, two surfactants from each series (Tween …
Evaluating Environmental And Social Impacts Of Fluorescent Lamp Recycling Processes In Thailand, Ella Nanda Sari
Evaluating Environmental And Social Impacts Of Fluorescent Lamp Recycling Processes In Thailand, Ella Nanda Sari
Chulalongkorn University Theses and Dissertations (Chula ETD)
For the past decade, Thailand has had intensively installed Fluorescent Lamp (FL) for lighting purposes. Improper handling or disposal of a spent fluorescent lamp can cause not only environmental damage by releasing mercury and other metals to the environment but also human health impact. Master Plan on Solid Waste Management (2016-2021) of Thailand encouraged industrial waste management to reduce such impacts with less consideration of the social challenges experienced by the formal recyclers that might offset the sustainability of the recycling process. This research aimed to identify enabling factors to improve the recycling process of SFLs using environmental life cycle …
Environmental Impacts And Hazardous Characteristics Of Led Lamps Waste, Delpavita Koralege Lakshani Diluka Gunawardhaa
Environmental Impacts And Hazardous Characteristics Of Led Lamps Waste, Delpavita Koralege Lakshani Diluka Gunawardhaa
Chulalongkorn University Theses and Dissertations (Chula ETD)
LED lighting technology has strongly taken the Thai lighting market due to the high consumption in residential, industrial and commercial sectors so the sustainability of LED lamps chain is considered as a critical factor for Thai lighting market. Additionally LED lamps waste consist of toxic metals hence improper landfilling has high potential to create negative environment and human health impact due to toxic metals contamination to environment. Therefore, this study focused on (1) quantifying environmental impact due to consumption behaviors among industrial lighting consumers and (2) hazard characterization and toxicity estimation of improper landfilling of LED lamps waste. Environmental impact …
Pvdf Hollow Fiber Membrane Modification For Dye Wastewater Treatment By Ozonation Membrane Contacting Process, Hanh Le Thi My
Pvdf Hollow Fiber Membrane Modification For Dye Wastewater Treatment By Ozonation Membrane Contacting Process, Hanh Le Thi My
Chulalongkorn University Theses and Dissertations (Chula ETD)
One of the main pollutions from textile wastewater is the dyeing wastewater containing color and organic matters. Among the treatment methods of dye wastewater, ozonation membrane contactor was used as the concept of this research. PVDF membranes were developed by pulse inductively coupled plasma (PICP) and grafted by organosilanes for hydrophobicity enhancement applied for dye wastewater treatment by ozonation membrane contactor. To obtain a stable grafting, the surface of PVDF hollow fiber membrane was activated by the plasma operating condition including two different plasma gases (oxygen and argon), applied voltage and pressure, plasma treatment shot, followed by grafting with four …
Prediction Of Arsenic Contamination In Rayong Groundwater Basin Using Machine Learning Based Approaches, Narongpon Sumdang
Prediction Of Arsenic Contamination In Rayong Groundwater Basin Using Machine Learning Based Approaches, Narongpon Sumdang
Chulalongkorn University Theses and Dissertations (Chula ETD)
The present study used three algorithms consisting of Support Vector Machine (SVM), Random Forest (RF), and Artificial Neuron Network (ANN) to locate risk area of arsenic (As)contamination in Rayong coastal aquifers, Thailand. There were three parts in this study consisting of 1) selecting the proper parameters 2) selecting the appropriate model, and 3) constructing the risk map of As. To perform models efficiently, the parameters used to generate the models have to be selected based on the correlation of each hydrochemical parameter with As concentration, which could explain the mechanisms of As release in groundwater. Due to major parameters in …
Fishermen's Participation In Marine Litter Collection Schemes In Thailand, Phornphavit Thongphaijit
Fishermen's Participation In Marine Litter Collection Schemes In Thailand, Phornphavit Thongphaijit
Chulalongkorn University Theses and Dissertations (Chula ETD)
Marine litter is a global environmental problem that poses various threats to the environment, the economy and society. Its impacts, for example, are the cost of beach cleaning, tourism, the beautiful landscape and etc. Marine litter, which later breaks into microplastics, affects marine lives contributing to the loss of economy to the people who depend on them. Several measures are used to tackle marine litter, including prevention and reduction of waste generation, prevention and reduction of litter reaching the marine environment, and marine litter removal. The latter is essential to clean already-at-sea litter or marine debris. Thailand, among the top …
Perspectives And Challenges Of Green Hotel In Thailand, Pornwajee Sangmanee
Perspectives And Challenges Of Green Hotel In Thailand, Pornwajee Sangmanee
Chulalongkorn University Theses and Dissertations (Chula ETD)
The hotel business is intense resource consumption such as water, energy, and non-durable products to delight customers, leading to environmental problems. With this regard, the transformation of the green hotel and environmental saving programs can dwindle the hotel property's adverse impacts. The purposes of this paper are 1) to study the perception of hotel practitioners and stakeholders toward the critical challenges of green hotel transformation and 2) to propose the recommendations for green hotel operations and certification scheme in Thailand. The study employed mixed methods to collect the data. The in-depth interviews were along with field observation; the interviews data …
Leaching Potential Assessment Of Atrazine And Nitrate In Sugarcane Field, Suphan Buri Province, Sorranat Ratchawang
Leaching Potential Assessment Of Atrazine And Nitrate In Sugarcane Field, Suphan Buri Province, Sorranat Ratchawang
Chulalongkorn University Theses and Dissertations (Chula ETD)
Atrazine is widely used as a herbicide to control annual broadleaf in agricultural area such as rice and sugarcane. It is considered as one of endocrine disrupting chemicals. Atrazine also affects liver, the central nervous system, immune system and cardiovascular function. The study area is sugarcane field in U-thong and Song Phi Nong district, Suphan Buri province. In this area, soil and groundwater samples were collected at eight different points distributed over the sugarcane area with different soil types. Batch adsorption experiment was carried out to evaluate the proper adsorption isotherm of each soil. Additionally, groundwater samples were analyzed for …
Detection Of Arsenite-Oxidizing Bacteria In Groundwater From A Gold Mine Under Different Geochemical Environments, Supeerapat Kraidech
Detection Of Arsenite-Oxidizing Bacteria In Groundwater From A Gold Mine Under Different Geochemical Environments, Supeerapat Kraidech
Chulalongkorn University Theses and Dissertations (Chula ETD)
Millions of people around the world potentially expose to arsenic (As) contaminated groundwater. Besides, the dominant form of As in groundwater is arsenite (As+3) and is more toxic than arsenate (As+5). This study integrated the microbial investigation, geochemical modeling, and multivariate statistical analysis to investigate the arsenite-oxidizing bacteria community from As-contaminated groundwater and its environmental influencing factors in order to understand and further develop the in-situ arsenic bioremediation technology. Microbial investigation was focusing on the detection and identification of native arsenite-oxidizing bacterial community using PCR-DGGE, cloning and sequencing of arsenite oxidase (aoxB) gene amplicons. Nine groundwater samples were collected from …
Sustainable Business Development Through Sufficiency Economy Practice : A Case Study Of Thai Listed Companies, Veerawin Korphaibool
Sustainable Business Development Through Sufficiency Economy Practice : A Case Study Of Thai Listed Companies, Veerawin Korphaibool
Chulalongkorn University Theses and Dissertations (Chula ETD)
The purpose of the research is to determine the sufficiency economy philosophy (SEP) performance through annual and sustainable development reports and simplify the outcomes by representing through a scoring system. Each of the SEP elements was aligned with each GRI sub-topic to generate a SEP scoring system. Then, the results from the scoring system were verified by testing the relationship between SEP performance and firm-specific risk of 34 Thai listed companies from 2013 to 2018 via panel data analysis. The global reporting initiative (GRI) standards were used as the fundamental scoring system as it's widely used and accepted in academic …
Semi-Supervised Thai Sentence Segmentation Using Local And Distant Word Representations, Chanatip Saetia
Semi-Supervised Thai Sentence Segmentation Using Local And Distant Word Representations, Chanatip Saetia
Chulalongkorn University Theses and Dissertations (Chula ETD)
A sentence is typically treated as the minimal syntactic unit used for extracting valuable information from a longer piece of text. However, in written Thai, there are no explicit sentence markers. We proposed a deep learning model for the task of sentence segmentation that includes three main contributions. First, we integrate n-gram embedding as a local representation to capture word groups near sentence boundaries. Second, to focus on the keywords of dependent clauses, we combine the model with a distant representation obtained from self-attention modules. Finally, due to the scarcity of labeled data, for which annotation is difficult and time-consuming, …
Explainable Stock Price Prediction Using Technical Indicators With Short Thai Textual Information, Kittisak Prachyachuwong
Explainable Stock Price Prediction Using Technical Indicators With Short Thai Textual Information, Kittisak Prachyachuwong
Chulalongkorn University Theses and Dissertations (Chula ETD)
A stock trend prediction has been in the spotlight from the past to the present. Fortunately, there is an enormous amount of information available nowadays. There were prior attempts that have tried to forecast the trend using textual information; however, it can be further improved since they relied on fixed word embedding, and it depends on the sentiment of the whole market. In this paper, we propose a deep learning model to predict the Thailand Futures Exchange (TFEX) with the ability to analyze both numerical and textual information. We have used Thai economic news headlines from various online sources. To …
Red Blood Cell Segmentation And Classification From Microscopic Images Using Machine Learning, Korranat Naruenatthanaset
Red Blood Cell Segmentation And Classification From Microscopic Images Using Machine Learning, Korranat Naruenatthanaset
Chulalongkorn University Theses and Dissertations (Chula ETD)
Red blood cell morphology analysis plays an essential role in diagnosing many diseases caused by RBC disorders. This manual inspection is a long process and requires practice and experience. Since recent computer vision and image processing in the medical imaging area can provide efficient tools, it can help hematologists to automatically analyze images from a microscope in a reduced time and cost. This research presents a new method to segment and classify RBCs from blood smear images. The process started from data collection, which a new application was created for precisely labeling. The normalization was done to reduce the color …
Detection Of Wagyu Beef Sources With Image Classification Using Convolutional Neural Network, Nattakorn Kointarangkul
Detection Of Wagyu Beef Sources With Image Classification Using Convolutional Neural Network, Nattakorn Kointarangkul
Chulalongkorn University Theses and Dissertations (Chula ETD)
Wagyu beef originated in Japan. However, there are many types of Wagyu beef in the market around the globe. Primary sources include Australia, USA, Canada and the United Kingdom. The authentic Japanese Wagyu is well known for its intense marbling, juicy rich flavor and tenderness. Observing that there are differences in flavor, texture, and quality between distinct sources of Wagyu. This research presents an AI-based approach to identify Wagyu beef sources with image classification. The input images were collected from reliable sources on the internet and augmented with DCGAN. Deep neural networks, CNN, was constructed to detect the marbled fat …
Learning Personally Identifiable Information Transmission In Android Applications By Using Data From Fast Static Code Analysis, Nattanon Wongwiwatchai
Learning Personally Identifiable Information Transmission In Android Applications By Using Data From Fast Static Code Analysis, Nattanon Wongwiwatchai
Chulalongkorn University Theses and Dissertations (Chula ETD)
The ease of use of mobile devices has resulted in a significant increase in the everyday use of mobile applications as well as the amount of personal information stored on devices. Users are becoming more aware of applications' access to their personal information, as well as the risk that these applications may unwittingly transmit Personally Identifiable Information (PII) to third-party servers. There is no simple way to determine whether or not an application transmits PII. If this information could be made available to users before installing new applications, they could weigh the pros and cons of having the risk of …
Confusion Detection From Facial Expression Using Deep Neural Network, Nun Vanichkul
Confusion Detection From Facial Expression Using Deep Neural Network, Nun Vanichkul
Chulalongkorn University Theses and Dissertations (Chula ETD)
Confusion is the most frequently observed emotion in daily life and can greatly affect the effectiveness and efficiency of communication. Detecting the confusion from learners and resolving timely is critical for achieving successful teaching in education. Most Facial Expression Recognition (FER) research works focus only on detecting six basic emotions: happiness, sadness, anger, fear, disgust, and surprise. Even though the confusion detection problem gains more attention from researchers recently, analysis of both spatial and temporal information with sufficient data is still short. In this study, we present a spatial-temporal network for confusion detection on video level which was trained on …
Using Automatic Speech Recognition To Assess Thai Speech Language Fluency In Montreal Cognitive Assessment (Moca), Pimarn Kantithammakorn
Using Automatic Speech Recognition To Assess Thai Speech Language Fluency In Montreal Cognitive Assessment (Moca), Pimarn Kantithammakorn
Chulalongkorn University Theses and Dissertations (Chula ETD)
The Montreal Cognitive Assessment (MoCA), a widely accepted screening tool for identifying patients with mild cognitive impairment (MCI), includes a language fluency test of verbal functioning where scores are based on the number of unique correct words produced by the test-taker. However, with different languages, it is possible that unique words may be counted differently. This study focuses on Thai as a language that differs from English in its type of word combination. We applied various automatic speech recognition (ASR) techniques to develop an assisted scoring system for the language fluency test of the MoCA with Thai language support. The …
Digital Platform Development For Performance Monitoring System In Oil And Gas Exploration And Production, Tanthai Poopaiboon
Digital Platform Development For Performance Monitoring System In Oil And Gas Exploration And Production, Tanthai Poopaiboon
Chulalongkorn University Theses and Dissertations (Chula ETD)
The paper provides a case study to enhance the Performance Management System for Oil and Gas Exploration and Production industry. Although the system was designed for the Oil and Gas Exploration and Production industry, the paper could be applied effectively for other industries because the modern organisation mainly utilised the Key Performance Indicator (KPI) to reflect its performance. So, the paper could be applied to most organisations with minor modifications. The Advanced Performance Management System was developed systematically powered by digital transformation according to research methodology framework, including research, analysis, project development, and result measurement. The research stage is studying …
Analysis Of Mass Transfer Coefficient Of Co2 Absorbed By Two-Component Amine Mixture In A Packed Bed Column, Thanakornkan Limlertchareonwanit
Analysis Of Mass Transfer Coefficient Of Co2 Absorbed By Two-Component Amine Mixture In A Packed Bed Column, Thanakornkan Limlertchareonwanit
Chulalongkorn University Theses and Dissertations (Chula ETD)
Nowadays, coal fired plant has an important role in generating energy all over the world. It affects to greenhouse gases effect (GHGs) and global warming. Carbon dioxide (CO2) is a product of coal combustion that is the amount of number one in the world. However, most of the CO2 usually remove from post-combustion process by chemical absorption which is Monoethanolamine (MEA). Anyway, MEA has a disadvantage such as low CO2 loading and corrosion. Therefore, this study needs to investigate the effect of the mass transfer for a new solvents, 2-(Methylamino)ethanol (2-MAE) and Dimethylaminoethanol (DMAE), compensate for the drawbacks of MEA …
Multi-Evidence Learning For Medical Diagnosis, Tongjai Yampaka
Multi-Evidence Learning For Medical Diagnosis, Tongjai Yampaka
Chulalongkorn University Theses and Dissertations (Chula ETD)
In recent years, a great many approaches for learning from multiple sources by considering the diversity of different views have been proposed. The most interesting field is medical diagnosis. For example, breast cancer screening normally employs two views of mammography (Cranio-Caudal and Medio-Lateral-Oblique) or two modes of ultrasound (B-mode and Doppler mode) breast images. This study proposes a multi-evidence learning model that combines the multiple evidences of breast images to improve diagnosis. Two views mammography and two modes of ultrasound were used. Our proposed model consists of four stages. First, feature extraction using Convolutional Neuron Networks was operated to extract …
Study Of Interactions Between Magnesium Silicate Particle And Diamond-Like Carbon Using Atomic Force Microscopy, Vipada Dokmai
Study Of Interactions Between Magnesium Silicate Particle And Diamond-Like Carbon Using Atomic Force Microscopy, Vipada Dokmai
Chulalongkorn University Theses and Dissertations (Chula ETD)
Interaction between particles and different surfaces under ambient condition is studied using AFM-based force spectroscopy. This work focuses on the adhesion mechanism and factors affecting particle-surface adhesion. The particles of interest consist of magnesium silicate (talcum powder) and zinc oxide (ZnO) particles, which have very attractive properties and are widely used in several applications. The adhesion force measurements were first carried out using silicon/silicon coated with DLC probes pressed on talc particles modified with hydrochloric acid or different organosilanes. These modifications change hydrophobicity and hydrophilicity of the particles. The results show that the adhesion forces are distributed in a bimodal …
Artificial Intelligence And Copyright Law In Singapore A Study On The Protection Of Compilations And Databases Arranged By Ai-Systems, Sella Say
Chulalongkorn University Theses and Dissertations (Chula ETD)
While the capability of artificial intelligence ("AI") gains remarkable momentum in creating copyrightable materials – the questions regarding the eligibility of these new creations, at the moment, are broadly discussed and posed challenges to the regime. The problem of how we fit the conventional notion of authorship and the condition of originality for AI-generated works remains a controversial topic. Some might suggest that subject matter created by AI should not be granted copyright protection on the presumption that AI is not a human who could treat as authors of works. At the same time, other supportive claims that the first …
ผลของรูปทรง ตำแหน่ง และอัตราการแสดงความคืบหน้า ต่อการตอบแบบสอบถามออนไลน์, ศุภสุตา มุ่ยห้วยแก้ว
ผลของรูปทรง ตำแหน่ง และอัตราการแสดงความคืบหน้า ต่อการตอบแบบสอบถามออนไลน์, ศุภสุตา มุ่ยห้วยแก้ว
Chulalongkorn University Theses and Dissertations (Chula ETD)
แบบสอบถามออนไลน์ เป็นเครื่องมือในการเก็บรวบรวมข้อมูลที่ง่ายและรวดเร็วในปัจจุบัน โดยประสิทธิภาพข้อมูลที่ได้ ขึ้นอยู่กับปริมาณข้อมูลที่ได้รับจากการตอบแบบสอบถามของหน่วยทดลอง ด้วยคำตอบที่สมบูรณ์ ครบถ้วน และเป็นความจริง การแสดงตัวชี้บอกความคืบหน้าเป็นหนึ่งในเครื่องมือที่ช่วยให้การตอบกลับแบบสอบถามเสร็จสมบูรณ์ได้ ผู้วิจัยจึงสนใจวิเคราะห์ถึงลักษณะของตัวชี้บอกความคืบหน้า โดยมุ่งเน้นวิเคราะห์ผลกระทบของ (1) รูปทรง (2) ตำแหน่ง และ (3) อัตราการแสดง ของตัวชี้บอกความคืบหน้า ต่อ อัตราการตอบกลับสมบูรณ์ ระยะเวลาในการตอบแบบสอบถาม และความจริงใจในการตอบแบบสอบถามออนไลน์บนโทรศัพท์มือถือ การศึกษานี้เป็นการทดลองในสภาพจริง การวิเคราะห์ข้อมูลพบว่า ผลกระทบของ (1) รูปทรง (2) ตำแหน่ง และ (3) อัตราการแสดง ของตัวชี้บอกความคืบหน้า ต่ออัตราการตอบกลับสมบูรณ์ไม่มีนัยสำคัญ นอกจากนี้ผลกระทบของทุกตัวแปรต้นต่อระยะเวลาในการตอบแบบสอบถาม และต่อความจริงใจในการตอบแบบสอบถามออนไลน์ ไม่มีนัยสำคัญเช่นกัน ข้อสรุปจากการศึกษานี้เป็นการต่อยอดองค์ความรู้ทางการวิจัยในบริบทของแบบสอบถามออนไลน์บนโทรศัพท์มือถือ
คลังข้อมูลและระบบสนับสนุนการตัดสินใจสำหรับอุบัติเหตุทางถนน, ปวินณา ทบพักตร์
คลังข้อมูลและระบบสนับสนุนการตัดสินใจสำหรับอุบัติเหตุทางถนน, ปวินณา ทบพักตร์
Chulalongkorn University Theses and Dissertations (Chula ETD)
อุบัติเหตุทางถนนนับเป็นปัญหาสำคัญระดับโลก รายงานสถานการณ์โลกด้านความปลอดภัยทางถนน ปี พ.ศ. 2561 (Global Report on Road Safety 2018) โดยองค์การอนามัยโลก (World Health Organization : WHO) พบว่า การบาดเจ็บและสูญเสียชีวิตจากอุบัติเหตุทางถนนมีแนวโน้มเพิ่มขึ้นจากฐานข้อมูลของปี 2556 ที่พบว่า อัตราผู้เสียชีวิตบนท้องถนนสูงถึง 1.25 ล้านคนต่อปี และการบาดเจ็บและสูญเสียชีวิตจากอุบัติเหตุทางถนนของประเทศไทยติดอันดับสองของโลก โดยมีจำนวนผู้เสียชีวิตอยู่ที่ 36.2 คนต่อประชากรหนึ่งแสนคน หรือเฉลี่ยปีละ 24,326 คน นอกจากนี้ ยังพบว่า อัตราผู้เสียชีวิตบนท้องถนนเพิ่มขึ้นเป็น 1.35 ล้านคนต่อปี โดยประเทศไทยติดอันดับเก้าของโลก และมีประมาณการจำนวนผู้เสียชีวิตอยู่ที่ 32.7 คนต่อประชากรหนึ่งแสนคน (60 คนต่อวัน) คิดเป็นจำนวนเฉลี่ยปีละ 22,491 คน แม้ว่าการบาดเจ็บและสูญเสียชีวิตจากอุบัติเหตุทางถนนของประเทศไทยมีแนวโน้มดีขึ้นเล็กน้อยในภาพรวม จากสถิติผู้เสียชีวิตของไทยที่ลดลง จากเดิม 2,000 คน แต่ประเทศไทยยังคงเป็นประเทศที่มีจำนวนผู้เสียชีวิตสูงที่สุดอันดับหนึ่งในเอเชียและในอาเซียน ดังนั้น หน่วยงานที่เกี่ยวข้องในประเทศไทยจึงจำเป็นต้องติดตามสถานการณ์ของอุบัติเหตุทางถนนทั่วประเทศ เพื่อที่จะสามารถวางแผนและกำหนดนโยบายหรือมาตรการต่างๆ ที่จะช่วยป้องกันและลดอุบัติเหตุทางถนนได้ โครงการ “คลังข้อมูลและระบบสนับสนุนการตัดสินใจสำหรับอุบัติเหตุทางถนน” นี้ ประกอบด้วย 5 ระบบ ได้แก่ ระบบวิเคราะห์ภาพรวมของการเกิดอุบัติเหตุ ระบบวิเคราะห์สาเหตุการเกิดอุบัติเหตุ ระบบวิเคราะห์ความปลอดภัยในชีวิตและทรัพย์สิน ระบบวิเคราะห์การเกิดอุบัติเหตุช่วงเจ็ดวันอันตราย และระบบวิเคราะห์แนวโน้มการเกิดอุบัติเหตุทางถนน ระบบได้พัฒนาขึ้นโดยมี Microsoft SQL Server 2019 เป็นระบบจัดการฐานข้อมูล และใช้โปรแกรม Tableau เวอร์ชั่น 2021.1 เป็นเครื่องมือในการพัฒนาธุรกิจอัจฉริยะ ระบบที่พัฒนาขึ้นนี้จะช่วยให้ผู้ที่มีส่วนรับผิดชอบให้สามารถวิเคราะห์ข้อมูลอุบัติเหตุทางถนนในมิติต่างๆ ได้อย่างถูกต้องและรวดเร็ว นอกจากนี้ยังสามารถเจาะลึกลงไปดูในรายละเอียดที่ต้องการเพื่อใช้ประกอบการตัดสินใจเกี่ยวกับการกำหนดแนวทางนโยบาย แผนแม่บทความปลอดภัยทางถนน ยุทธศาสตร์ทั้งในระยะสั้นและระยะยาว และแผนเกี่ยวกับการป้องกันและลดอุบัติเหตุทางถนนที่มีประสิทธิภาพมากยิ่งขึ้นต่อไป
โมไบล์แอปพลิเคชันสำหรับการค้นหาและจัดการกลุ่มผู้เล่นแบดมินตัน, สุทธิพงษ์ แซ่อื้อ
โมไบล์แอปพลิเคชันสำหรับการค้นหาและจัดการกลุ่มผู้เล่นแบดมินตัน, สุทธิพงษ์ แซ่อื้อ
Chulalongkorn University Theses and Dissertations (Chula ETD)
กีฬาแบดมินตันเป็นกีฬาที่ต้องเล่นอย่างน้อย 2 คนขึ้นไป และต้องมีสนามแบดมินตันในการเล่น ซึ่งปัญหาสำหรับคนที่ต้องการเล่นแบดมินตันอันดับต้นๆ ก็คือ ไม่สามารถหากลุ่มในการเล่นได้ หรือ ไม่สามารถหาสนามแบดมินตันได้ ในปัจจุบันผู้เล่นแบดมินตันมีการรวมกลุ่มการเล่น ที่นัดกันผ่านสื่อสังคม โดยจะเล่นที่สนามแบดมินตันประจำที่หัวหน้ากลุ่มเป็นสมาชิกอยู่ ในช่วงเวลาที่ตกลงกันไว้ล่วงหน้าแบบหลวมๆ ผู้เล่นใหม่จะไม่ทราบถึงกลุ่มการเล่นที่มีอยู่แล้ว จนกว่าจะได้รับการชวนให้เข้ากลุ่มที่นัดเล่นในเวลาที่ตนว่าง ดังนั้นเพื่อช่วยให้ผู้เล่นแบดมินตันกลุ่มต่างๆ และผู้เล่นแบดมินตันรายใหม่สามารถนัดเล่นแบดมินตันที่สนามแบดมินตันได้สะดวก จึงจำเป็นต้องมีระบบที่จะเข้ามาช่วยในการค้นหาและจัดการการเล่นแบดมิน โครงการ “โมไบล์แอปพลิเคชันสำหรับการค้นหาและจัดการกลุ่มผู้เล่นแบดมินตัน” ประกอบด้วย 6 ระบบ ได้แก่ ระบบจัดการบัญชีผู้ใช้ ระบบจัดการกลุ่มผู้เล่นแบดมินตัน ระบบนัดหมาย ระบบจัดการการเล่นแบดมินตัน ระบบออกรายงานและระบบวิเคราะห์การใช้งานสนามของสมาชิกคอร์ท โดยใช้ ไฟร์เบส ในการจัดการฐานข้อมูล ใช้โปรแกรม แอนดรอยด์สตูดิโอ 4.0.1 เป็นเครื่องมือในการพัฒนาระบบและใช้โปรแกรม ไมโครซอฟท์ เพาเวอร์ บีไอ เป็นเครื่องมือในการพัฒนาธุรกิจอัจฉริยะ ระบบที่พัฒนาขึ้นนี้จะช่วยให้การจัดการกลุ่มผู้เล่นแบดมินตันได้อย่างเป็นระบบ มีการจัดเก็บข้อมูลเพื่อนำมาใช้ในการวิเคราะห์และสนับสนุนการตัดสินใจต่างๆให้มีประสิทธิภาพและสร้างความสามารถทางการแข่งขันให้กับเจ้าของสนามแบดมินตันได้