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2019

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Web Personalization Issues In Big Data And Semantic Web: Challenges Andopportunities, Bujar Raufi, Florije Ismaili, Jaumin Ajdari, Xhemal Zenuni Jan 2019

Web Personalization Issues In Big Data And Semantic Web: Challenges Andopportunities, Bujar Raufi, Florije Ismaili, Jaumin Ajdari, Xhemal Zenuni

Turkish Journal of Electrical Engineering and Computer Sciences

Web personalization is a process that utilizes a set of methods, techniques, and actions for adapting the linking structure of an information space or its content or both to user interaction preferences. The aim of personalization is to enhance the user experience by retrieving relevant resources and presenting them in a meaningful fashion. The advent of big data introduced new challenges that locate user modeling and personalization community in a new research setting. In this paper, we introduce the research challenges related to Web personalization analyzed in the context of big data and the Semantic Web. This paper also introduces …

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Patient Comfort Level Prediction During Transport Using Artificial Neural Network, Zeljko Jovanovic, Marija Blagojevic, Dragan Jankovic, Aleksandar Peulic Jan 2019

Patient Comfort Level Prediction During Transport Using Artificial Neural Network, Zeljko Jovanovic, Marija Blagojevic, Dragan Jankovic, Aleksandar Peulic

Turkish Journal of Electrical Engineering and Computer Sciences

Since patient comfort during transport is a matter of paramount importance, this paper aims to determine the possibilities of applying neural networks for its prediction and monitoring. Specific objectives of the research include monitoring and predicting patient transport comfort, with subjective assessment of comfort by medical personnel. An original Android application that collects signals from an accelerometer and a GPS sensor was used with the aim of achieving the research goals. The collected signals were processed and a total of twelve parameters were calculated. A multilayer perceptron was created in the proposed research. The evaluation results indicate acceptable accuracy and …

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Hgab3c: A New Hybrid Global Optimization Algorithm, Kamaljeet Kaur, Shakti Kumar, Jyoti Saxena Jan 2019

Hgab3c: A New Hybrid Global Optimization Algorithm, Kamaljeet Kaur, Shakti Kumar, Jyoti Saxena

Turkish Journal of Electrical Engineering and Computer Sciences

This paper proposes a new optimization algorithm, namely HGAB3C, and presents its performance on the CEC-2014 test suite. In HGAB3C, simple genetic algorithms (GAs) and big bang-big crunch (BB-BC) are hybridized. The algorithm carries out global searches using a simple GA. In every generation the BB-BC algorithm is used to carry out local searches. The addition of local search has improved the capability of simple GAs significantly. The performance of the proposed algorithm is compared with 17 other optimization algorithms on all 30 functions of the CEC-2014 benchmark suite. It is observed that HGAB3C outperforms all other algorithms on 4 …

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A Transmission Optimization Algorithm For Smart Load Controllers, Ohyoung Song Jan 2019

A Transmission Optimization Algorithm For Smart Load Controllers, Ohyoung Song

Turkish Journal of Electrical Engineering and Computer Sciences

This paper introduces a transmission optimization algorithm for wireless transmissions between smart load controllers and a corresponding gateway in wireless personal area networks, where smart load controllers connect several electrical appliances through their corresponding load interfaces, measure the power consumption from each electrical appliance connected to the load controller, and control on/off switching through its load interface. The aim of this paper is to reduce the traffic load of power consumption data in electrical appliances used in the building area network and the smart grid network. The proposed algorithm allows the smart load controller to efficiently reduce traffic load even …

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A Novel And Unified Approach For Averaged Channel Capacity And Averagedeffective Capacity Analyses Of Diversity Combining And Multihop Transmissionschemes In Flat Fading Environments, Ferkan Yilmaz, Mohamed-Slim Alouini Jan 2019

A Novel And Unified Approach For Averaged Channel Capacity And Averagedeffective Capacity Analyses Of Diversity Combining And Multihop Transmissionschemes In Flat Fading Environments, Ferkan Yilmaz, Mohamed-Slim Alouini

Turkish Journal of Electrical Engineering and Computer Sciences

n this paper, we introduce an Lp -norm aggregation to present a signal-to-noise ratio expression unified not only for such diversity combining schemes as equal-gain combining, maximal-ratio combining, and selection combining, but also for such transmission techniques as multihop transmission. Accordingly, we propose two moment-generating function-based approaches that both respectively unify the exact analyses of the averaged channel capacity and averaged effective capacity over generalized fading channels with respect to the diversity combining and multihop transmission schemes. Finally, the mathematical formalism is illustrated by numerical special cases and verified by simulations.

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Cover And Contents Jan 2019

Cover And Contents

Turkish Journal of Electrical Engineering and Computer Sciences

No abstract provided.

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Finite Integration Method With Chebyshev Expansion For Finding Numerical Solution Of Nonlinear And Fractional Order Differential Equations, Ampol Duangpan Jan 2019

Finite Integration Method With Chebyshev Expansion For Finding Numerical Solution Of Nonlinear And Fractional Order Differential Equations, Ampol Duangpan

Chulalongkorn University Theses and Dissertations (Chula ETD)

In this dissertation, we develop the finite integration method by using Chebyshev polynomial expansion (FIM-CPE) for solving one- and two-dimensional nonlinear differential equations. The developed FIM-CPE can be used on any domains. Then, we utilize our FIM-CPE to deal with the spatial variable and the forward difference quotient to handle the derivative involving temporal variable. Thus, the numerical algorithms based on this idea are devised to overcome three nonlinear problems including one-dimensional Burgers' equation with shock wave, time-fractional Benjamin-Bona-Mahony-Burgers' equation and two-dimensional nonlinear Poisson equation over irregular domains. Moreover, we examine our algorithms with several experimental examples by comparing the …

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Studies Of Beta-Cardiotoxin From King Cobra Venom On Rat Cardiac Functions: Effect On Isolated Single Cardiomyocyte, Tuchakorn Lertwanakarn Jan 2019

Studies Of Beta-Cardiotoxin From King Cobra Venom On Rat Cardiac Functions: Effect On Isolated Single Cardiomyocyte, Tuchakorn Lertwanakarn

Chulalongkorn University Theses and Dissertations (Chula ETD)

Beta-cardiotoxin (ß-CTX), a novel protein isolated from the King cobra (Ophiophagus hannah) venom has previously been proposed as a beta-blocker candidate. However, cellular mechanisms of ß-CTX on cardiomyocyte is unknown. This study aimed to evaluate the impact of ß-CTX on isolated rat cardiomyocyte function and the cardiac myofibrillar activity, and to explore involvement of ß-adrenergic receptor (ß-AR) signaling pathway. ß-CTX was isolated and purified using two-step chromatographic method and confirmed by N-terminal sequencer. The function of ß-CTX on cardiomyocyte was compared to propranolol in 3 conditions, basal state, with isoproterenol (ISO), and with forskolin (FSK). ß-CTX exhibited more potency than …

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Stochastic Differential Equation With Jumps For Tilapia Population, Kanitin Sukchum Jan 2019

Stochastic Differential Equation With Jumps For Tilapia Population, Kanitin Sukchum

Chulalongkorn University Theses and Dissertations (Chula ETD)

Tilapia population with harvesting in the tilapia farm can be modeled by an ordinary differential equation (ODE). In real life, tilapia population can be affected by many factors. To make the model for tilapia population more realistic, we develop the ODE into the stochastic differential equation (SDE) together with jumps that represent the epidemic occuring for tilapia. Furthermore, we study the effect of some important parameters in the model to the number of tilapia in the tilapia farm via simulation. Both SDEs for tilapia population with and without jumps are simulated by using Euler-Maruyama and jump-adapted Euler methods.

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Text Localization And Extraction From Background With Texture And Noise In Digital Images Using Adaptive Thresholding And Convolutional Neural Network, Pukjira Pattaranuprawat Jan 2019

Text Localization And Extraction From Background With Texture And Noise In Digital Images Using Adaptive Thresholding And Convolutional Neural Network, Pukjira Pattaranuprawat

Chulalongkorn University Theses and Dissertations (Chula ETD)

For the past few years, research topics on finding position of text have received more and more attention from researchers because there are still lots of problems that are needed to be solven. We propose a novel method to find the position of text in an image. The first step of the proposed method is to adjust an image by converting a color image to a gray scale image and then use an average filter to improve an image. An average filter is used to make the background smooth and reduce noise. After that an adaptive thresholding is used to …

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Attributes Of Perceived Values Towards Coffee Shop Industry In Bangkok, Orapin Siprajim Jan 2019

Attributes Of Perceived Values Towards Coffee Shop Industry In Bangkok, Orapin Siprajim

Chulalongkorn University Theses and Dissertations (Chula ETD)

Coffee shop or café is referred to the place where it offers coffee or drinks and some space for customers to sit and relax. It becomes the most visited place for the modern lifestyles. Coffee shops can be found easily in cities, especially Bangkok, Thailand. There are both local individual coffee houses and chained coffee brands in the market, people can choose to visit either of which or both of them. The rapid growth of coffee industry in Bangkok is affecting how each brand could compete with its rival in the market. Customers are the key driver for the business …

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Modern Utilization Of Digital Technology Influencing Career Opportunities For The Millennials (Generation Y) In Thailand, Atithaya Pongpanichpisarn Jan 2019

Modern Utilization Of Digital Technology Influencing Career Opportunities For The Millennials (Generation Y) In Thailand, Atithaya Pongpanichpisarn

Chulalongkorn University Theses and Dissertations (Chula ETD)

With the rise of the new digital economy, the concept has started to change the form of career opportunities. Quick and easy sharing of information, which is the most important aspect in the new era, has been the catalyst for the change and development of the business world that enters a digital era. With exponentially growing digital technology, the modern development and utilization of digital technology will have an impact on the career opportunities for the Millennials (Generation Y) in Thailand. The purpose of this study is to assess the impact of modern utilization of digital technology influencing career opportunities …

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Does The Credibility Of An Influencer Affect Buying Intention Of Youtube Users And Is There A Difference In Perception Of An Influencer's Credibility And On Their Buying Intention Regarding Gender Characteristics, Anthony Kim Long Hoang Jan 2019

Does The Credibility Of An Influencer Affect Buying Intention Of Youtube Users And Is There A Difference In Perception Of An Influencer's Credibility And On Their Buying Intention Regarding Gender Characteristics, Anthony Kim Long Hoang

Chulalongkorn University Theses and Dissertations (Chula ETD)

YouTube platform has been rising in popularity for the past decade, we have seen the emergence of numerous influencers on the platform. With over 2 billion monthly active users in 2020, according to Statista research institute, YouTube represent an opportunity for brand marketer who would like to promote their products or services to a large audience. First, this study aims to determinate the effect perceived influencer’s credibility of an influencer on YouTube might have on the viewer’s buying intention of the advertised product. Then secondly, to determine which aspect of credibility (attractiveness, expertise, or trustworthiness) has the greater influence on …

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Does Social Media Trend Affect People Decision To Eat Out?, Chanonpol Chanuhacha Jan 2019

Does Social Media Trend Affect People Decision To Eat Out?, Chanonpol Chanuhacha

Chulalongkorn University Theses and Dissertations (Chula ETD)

New era of marketing using social media as a promotional platform provides many advantages, for example the ability to communicate between producers and consumers while traditional marketing only promotes directional communication, companies only convey the message they want, without getting feedback and opinions directly from consumers. This research will explore what factors are related to the use of social media as a promotional tool and how far these factors influence dining behavior in restaurants. A quantitative survey was conducted to measure the effect of social media’s advertising, customers’ attitudes, customer experience on the decision to eat out at restaurants among …

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Caffe Muanchon Marketing Mix And Consumer's Purchasing Decision, Nisapa Kulnarernatwanich Jan 2019

Caffe Muanchon Marketing Mix And Consumer's Purchasing Decision, Nisapa Kulnarernatwanich

Chulalongkorn University Theses and Dissertations (Chula ETD)

Nowadays, the coffee shop business market has consecutively high competition, in terms of consumers that have various coffee brands to consume and also in terms of owners that have more competitors. CPALL is one of the biggest companies in Thailand that demands market value of coffee shops. There are 7 coffee brands under the CPALL including Caffe MuanChon. In consequence, the purpose of this study is to examine the factors that affect consumer’s decision to purchase Caffe MuanChon. First is 7Ps marketing mix especially product and price and second is demographic factors which are gender, age, income (per month), education …

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Strategic Advantage Analysis Of A Leading Low Cost Carrier In Thailand : A Case Of Thai Airasia And Nokair, Punjarod Toppoopha Jan 2019

Strategic Advantage Analysis Of A Leading Low Cost Carrier In Thailand : A Case Of Thai Airasia And Nokair, Punjarod Toppoopha

Chulalongkorn University Theses and Dissertations (Chula ETD)

In this study, the author focus on an objective that is why Thai AirAsia can generate different levels of net profits from NokAir even two airlines are under similar environmental conditions and began business operations in a close year. Hence, the Author examined their different operating strategies during 2013-2019 with Ansoff Matrix along with environmental factors either external or internal that possibly affect the effectiveness of operating strategies. I applied the PEST analysis for analyzing macro-environment factors, Porter’s five forces analysis for investigating environment in the low-cost carrier market, also Nash equilibrium and theory of oligopoly for examining decisions of …

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The Country Of Origin Effect Of “Made In Thailand” For Chili Paste Product And Its Leverage On Local And Foreigner Consumers Upon Their Purchase Intention, Angkana Wongwasutha Jan 2019

The Country Of Origin Effect Of “Made In Thailand” For Chili Paste Product And Its Leverage On Local And Foreigner Consumers Upon Their Purchase Intention, Angkana Wongwasutha

Chulalongkorn University Theses and Dissertations (Chula ETD)

The main objective of this research is finding out whether the country of origin effect, the branding of “Made in Thailand” for Chili paste product has any leverage on local and foreigner customers upon their purchase intention. The methodology of this research is an online google survey with a total of 160 respondents. As a result, regardless of nationality, 72 percent of all respondents have chosen a package with "Made in Thailand" logo. So the country of origin effect applied to both local and foreigner consumers.

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What Is Behind The Choice Of Post Millennial (Generation Z)’S Profession In Thailand?, Kwanjira Jirapongsak Jan 2019

What Is Behind The Choice Of Post Millennial (Generation Z)’S Profession In Thailand?, Kwanjira Jirapongsak

Chulalongkorn University Theses and Dissertations (Chula ETD)

Today's labor market mainly belongs to four generations which are Baby boomers generation, Generation X, Millennials, and Post-millennials or generation Z. This research focuses on generation Z who have a different mindset from the previous generations and they will become a main workforce in the future while the Baby boomer generation is retiring in no time. In the modernized society, companies give high priority to technology in operating their business. Generation Z is a group of people born after 1995 and referred to people who grew up with technology. Consequently, it is obviously observed that they will bring new innovations …

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Health-Conscious Working People And 7-11 Ready Meal, Kemika Sricharoenwong Jan 2019

Health-Conscious Working People And 7-11 Ready Meal, Kemika Sricharoenwong

Chulalongkorn University Theses and Dissertations (Chula ETD)

Thailand’s urbanization and westernization, especially in Bangkok metropolitan has led into an alteration in dietary practices which relies more on convenience. Ready meal boxes from convenience store such as 7-eleven has increasingly gained popularity. Still, a disproportionate nutrition of Ready meal boxes seems to be contradictory with an increasing trend on health such as healthy food. This research paper explores whether health consciousness in terms of diet has an effect on working people’s decision to purchase 7-eleven ready meal boxes or not. Quantitive approach was employed where the data was obtained through online survey from 18 to 25 June, 2020. …

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A Study Of Marketing Strategy That Xiaomi Used To Dethrone Samsung In India’S Smartphone Market, Htet Myat Aung Jan 2019

A Study Of Marketing Strategy That Xiaomi Used To Dethrone Samsung In India’S Smartphone Market, Htet Myat Aung

Chulalongkorn University Theses and Dissertations (Chula ETD)

This individual study aims to examine the relationship between marketing strategy and firm’s market shares. In this case, the theory of marketing mix will be mainly used to analyze how Xiaomi's market share grew in accordance with Samsung’s situation. Furthermore, I will take macro environment condition into consideration as the factors that have an impact on the firm's future business. Apart from product innovation and modern technology that are essential things for a phone maker to dominate the market, a business needs to have an effective marketing strategy which can drive up the sales volumes followed by acquiring more market …

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Analyzing Impact Of Changing Fuel-Mix Composition Of Thailand Power Generation, Chanaipong Srichai Jan 2019

Analyzing Impact Of Changing Fuel-Mix Composition Of Thailand Power Generation, Chanaipong Srichai

Chulalongkorn University Theses and Dissertations (Chula ETD)

The energy industry is considered one of the important sectors for national economic development—especially the electricity generation industry then Thailand has developed a power development plan as the nation roadmap to ensure power security and reliability of the electricity system. In this study, we focus on the electricity generation industry and examine the impacts resulting from the changing composition of power generation type compare between Thailand’s Power Development Plan year 2015 and the year 2018. The scenario case 1 assuming that the electricity generation is generated from 37% of Natural Gas, 23% of Coal, and 50% other. When the changing …

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The Role Of Input Frequency On The Acquisition Of English Adjectival Suffixes By L1 Thai Learners, Chalit Chiarakiat Jan 2019

The Role Of Input Frequency On The Acquisition Of English Adjectival Suffixes By L1 Thai Learners, Chalit Chiarakiat

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study examined the acquisition of English adjectival suffixes by L1 Thai learners to test whether input frequency, which refers to frequency of occurrences in corpora of English usage (Almulla, 2015; Biber, 1993), influenced the perception of the targeted English adjectival suffixes. Based on the input frequency framework (J. Bybee, 2010; J. L. Bybee & Beckner, 2010; Croft & Cruse, 2004), it was hypothesized that type frequency (suffix frequency) as well as token frequency (word frequency) would have a positive effect on the perception. A Grammaticality Judgement Test which incorporated type and token frequency counts from the MorphoQuantics corpus was …

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A Study Of Online Self-Regulation On English Proficiency Among Chinese Efl Undergraduate Students, Yong Yang Jan 2019

A Study Of Online Self-Regulation On English Proficiency Among Chinese Efl Undergraduate Students, Yong Yang

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study aimed to 1) explore the online self-regulation used by Chinese EFL students, and 2) investigate the correlation between students’ online self-regulation and their English proficiency. Participants included 101 Chinese undergraduate students enrolled in an English test prep online course at a university in southwestern China. The research instruments consisted of the Online Self-regulated Learning Questionnaire (OSLQ) and National College English Test Band 4 (CET-4). The data were analyzed through descriptive statistics and Pearson correlation coefficient. The results revealed that 1) the participants had a moderate level of using online self-regulatory skills with the highest level for 'Environment Structuring' …

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An Analysis Of A Digital Game As Resource Of Autonomous English Language Learning, Panich Wongkhwansane Jan 2019

An Analysis Of A Digital Game As Resource Of Autonomous English Language Learning, Panich Wongkhwansane

Chulalongkorn University Theses and Dissertations (Chula ETD)

The research aims to analyze an online digital game features and investigate students’ perceptions toward the game; whether or not they think the game is a context where the opportunities of English language learning and practicing could be provided. Five main game features were analyzed based on the games’ characteristics promoting language learning. In addition, in order to investigate the students’ perceptions, three participants were interviewed as a group. The data were collected through the semi-structured and individual follow-up interview, and analyzed using qualitative approach. The findings indicated that, provided int the game, there are five major features which could …

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Exploring Critical Reading In The English Textbooks For Thai Students, Mintra Suratha Jan 2019

Exploring Critical Reading In The English Textbooks For Thai Students, Mintra Suratha

Chulalongkorn University Theses and Dissertations (Chula ETD)

The study aims to explore components of critical reading skills in which support the development of critical reading ability in textbooks used by Thai students. 14 textbooks were gathered and used in this research. The instrument used was core critical reading skills checklist for upper secondary school English textbooks. Content analysis and descriptive statistics were employed to analyze result derived from the checklist. The result showed that textbook sample composed of different degrees of critical reading components. Some skills can be found in almost every textbook, while some skills can hardly be found. Moreover, the order of skills presented in …

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Implementation Of European Union Ecolabel And Its Effect On Thai Exports, Chanida Dharmasaroja Jan 2019

Implementation Of European Union Ecolabel And Its Effect On Thai Exports, Chanida Dharmasaroja

Chulalongkorn University Theses and Dissertations (Chula ETD)

All over the world are becoming aware of the selection and use of products and services that cause less environmental impact or preserving the environment Make each country including various organizations Have introduced the above concept into an environmental label That is to certify that the product has passed all stages of the inspection, from raw material selection, production, distribution To the destruction of that product In which the European Union issued their environmental labeling regulations Under the name of the EU flower project. The European Union is the largest market and is the driving force of the world economy …

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Europe - A Battleground Over Huawei’S 5g : The Possibility Of Economic Coercion By Both The Us And China To Make A Change On The Battlefield, Liping Zhang Jan 2019

Europe - A Battleground Over Huawei’S 5g : The Possibility Of Economic Coercion By Both The Us And China To Make A Change On The Battlefield, Liping Zhang

Chulalongkorn University Theses and Dissertations (Chula ETD)

Huawei has been a global headline amid the intensifying US-China trade war, the potential for economic coercion from China and the US to deter the European Union (EU) from pursuing an unfavorable policy on Huawei's involvement in 5G network shall be examined. This paper explores EU's relations, notably its trade ties with the two powers and analyses the possibility of an economic coercion against the EU and the consequences of their actions. Through descriptive analysis of the trade and investment statistics, the paper finds that the EU is vulnerable to economic coercion from the US as well as China, however, …

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The Commitment On The Stated Use Of Ipo Proceeds And Long-Run Performance, Vitaya Tangwongpatikul Jan 2019

The Commitment On The Stated Use Of Ipo Proceeds And Long-Run Performance, Vitaya Tangwongpatikul

Chulalongkorn University Theses and Dissertations (Chula ETD)

This research paper examines the relationship between the commitment to the stated use of IPO proceed and long-run performance. This also examines the effect of hot market condition on the probability of commitment. Furthermore, this paper investigates the effect of the specificity of the disclosure in the filling document on the probability of commitment. The data comprises of the firms that went public in both the Stock Exchange of Thailand (SET) and the Market for Alternative Investment (mai) during the period of 2000 – 2018. The stated use of IPO proceed is classified into 3 groups: Investment, Debt Repayment, and …

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Impact Of Esg Ratings On The Borrowing Cost, Evidence From Asia-Pacific Region, Nattawan Tantinakom Jan 2019

Impact Of Esg Ratings On The Borrowing Cost, Evidence From Asia-Pacific Region, Nattawan Tantinakom

Chulalongkorn University Theses and Dissertations (Chula ETD)

This paper studies the impact of ESG ratings, in conjunction with the particular dimension, on the companies’ borrowing cost. Also, this is the first paper that study the impact of level of ESG disclosure, voluntary and mandatory disclosure, on the borrowing cost of the firms. The findings show that only ESG disclosure score has significantly lower the borrowing cost of the companies through the environmental and corporate governance dimensions. It can be concluded that lending institutions do take into account the ESG disclosure score, which integrated risk management framework of firm, as an additional explanation factor over the financial factors. …

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Is A Self-Employment Skilled Employment? - A Case Study Of Self-Employed With Bachelor’S Degree In Thailand, Kemmika Labkim Jan 2019

Is A Self-Employment Skilled Employment? - A Case Study Of Self-Employed With Bachelor’S Degree In Thailand, Kemmika Labkim

Chulalongkorn University Theses and Dissertations (Chula ETD)

In the paper, the research will be focused on self-employed occupations with a bachelor's degree in Thailand to look at the skills require for the self-employed to be hired. The researcher looks further into the Thai labor force survey conducted in 2016, the latest source. The survey shows in detail of self-employed occupations in Thailand with degrees with the total number of 2,284 people in 196 different occupations which counted only those who graduate from bachelor's and above. Hence, in this paper, the researcher looks upon three different sources of information: 2016 Thai labor force National Survey, the skill required …

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