cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.14457/cu.the.2011.1697
title: Piecewise affine control for unmanned bicycle using steering control and gyroscopic stabilization

description: To presents the design of an unmanned bicycle that can stay upright while following the path autonomously in a computer simulation. The bicycle consists of two main systems; stabilization system and navigation system. We design each system separately and combine them together. For the stabilization system, we develop a novel technique which utilizes both the gyroscopic stabilization and the steering control. We design a state-feedback controller which guarantees the stability of a class of nonlinear systems over the desired operating region and ensures some practical performance criteria of the closed-loop system. We apply the piecewise affine technique together with the regional pole placement and linear quadratic regulator in order that all design formulations are cast as a linear matrix inequalities (LMI) optimization problem. The discrete-time controller is also obtained from the continuous-time controller via LMI approach. For the navigation system, we design a controller by applying a linear regression using least square error method. Then an integrated stabilization and navigation system of the bicycle has been designed. We propose the algorithm for recalculating the desired steering angle. The simulation results illustrate the effectiveness of the proposed design methods.
DOI: 10.14457/cu.the.2011.1698
title: Framework of specific information search protocol

description: Since the Internet is a large resource of information that is important to a vast number of people, search engines are implemented for accessing the required resources over the Internet. Every search engine allows users to enter keywords in the search field for searching. Unfortunately, searching by keyword is usually not specific. When users do not know appropriate keywords, the search result is generally a long list of information, much of it irrelevant. Therefore, the protocol named Information Search Protocol (ISP) is proposed. The ISP enables users to enter a partial part of the required URL and keywords; the ISP can narrow down the search. However, the original ISP cannot perform an image search and it has a defect of the routing module that causes network congestion. Therefore, this research proposes the image search mechanism and routing algorithm to apply to the ISP. Since the ISP is modified in all mechanisms, the new version of the ISP is called Specific Information Search Protocol (SISP). The image extraction of the image search mechanism is implemented using Color Region Correlation (CRC). Moreover, this research is also proposing a Patrol Packet (PTP) Algorithm to solve the routing problem. The search result of the SISP is specific. In addition to more effective searches, the PTP can significantly reduce the congestion caused. Therefore, the SISP is a performance search protocol.
DOI: 10.14457/cu.the.2011.1699
title: Intelligent Cache Farming Architecture for network management

description: Web caching is widely recognized as an effective technique that improves the quality of service (QoS) over the Internet, such as reducing user latency and network bandwidth usage. However, it still meets problems when the number of users increases due to limitations of hardware and management policy of caches. Therefore, this research proposes the Intelligent Cache Farming Architecture (ICFA) to be an alternative caching architecture model integrating with the recommending mechanism. The proposed architecture is the cache grouping mechanism where browsing characteristics are applied to improve the performance of the Internet services. In order to prove the proposed architecture, the trace-driven simulation and the traditional caching model, which is the original model without grouping criteria for the web cache, are implemented in a virtual machine environment. The results indicate that the delay measurement of the ICFA is dropped more than 44%, while the hit rate and the byte hit rate of the ICFA increase more than 20% and 43%, respectively.
DOI: 10.14457/cu.the.2011.1700
title: Trading strategies for fixed income securities using pricing error and yield curve factor error

description: This research studies and develops trading strategies for fixed income securities based on bond pricing error and yield curve factor error, which is the deviation of the yield curve factors from their historical or expected values on a particular trading day. For both pricing-error based and factor-error based strategies, the trading signals are derived by two models which are the moving average and time-series models. This empirical study is conducted for the German and U.S. government bond markets. We found the mean-reversion effects on the pricing error of the bonds in both markets and found that the pricing-error based strategy with the moving average model outperforms the benchmarks in both markets. In addition, we found that the strategy based on the deviation of the level also outperforms the benchmarks in both markets, even though the mean-reversion effects are insignificant for the level of the yield curve. This suggests that a short-term average is a good mean forecast for the level of the yield curve. Furthermore, we found that a time-series model can improve the performance of a moving average model for the strategy based on the slope and curvature of the yield curve. Combining two single strategies together, we found some improvement in the standardized returns due to diversification in the German government bond market, while the benefit of diversification is not high enough to compensate the lower return in the U.S. government bond market.
DOI: 10.14457/cu.the.2011.1701
title: The Republic of Korea's foreign aid through e-Asia and Knowledge Partnership Fund :a case study of capacity building and school networking for educational services (e-learning) in Thailand

description: This study is 1) to investigate Korean multilateral aid through the study of the e-Asia and Knowledge Partnership Fund (EAKPF) and 2) to explore the attitude of the participants of the project toward Korea, the provider of the fund in the project “Capacity Building and School Networking for Educational Services (E-Learning) in Thailand.” The project is funded by Korea’s EAKPF managed by Asian Development Bank (ADB). Due to the fact that Korean economy depends on the ICT manufacture for the international trade and investment, one of the significant hypothesizes concentrates onto the economic interests which Korea might receive from the project. The study of Korean economy, Korea’s ODA (Official Development Assistance), and the in-depth interview with the project officials are the source to conclude the motivation of the aid. Analysis of the motivation is “national interest”. The study finds that the project does not possibly benefit Korea’s economic interest. Instead, Korea gains the donor image which is the diplomatic interest. The study considers that providing the assistance to the project represents the responsibility of donor country. The study analyzes that Korea’s development assistance through EAKPF increasing Korea’s ODA quality and quantity strengthens the national image to the international arena. In accordance with the enhancement of the national image, Korea prepares itself for the accession to Development Assistance Committee-DAC in Organization for Economic Co-operation and Development (OECD) in 2010.
DOI: 10.14457/cu.the.2011.1702
title: Nuclear states in strongly coupled quark-gluon plasma from gauge-gravity correspondence

description: In a deconfined phase, quarks, anti-quarks and gluons are not necessary to be in a colorless bound state. They can form various color non-singlet (or exotic for short) nuclear bound states as well as color singlet bound states in the strongly coupled quark-gluon plasma (sQGP) given that baryon number density is sufficiently large. We study the matter of sQGP mainly occupied by these nuclear states via the so-called Sakai-Sugimoto model, which is a gravity dual model of large Nc QCD. Note that Nc denotes the number of colours. We propose the gravity dual models of exotic nuclear states in the deconfining background of the Sakai-Sugimoto model with flavour degrees of freedom turned off. Moreover, we calculate and compare binding energies and screening lengths of these nuclear states as an analysis of their stabilities. The results indicate that these nuclear states are less stable than normal hadrons. Then, turning on the flavour degrees of freedom, we explore the possibilities of the existence of the multiquark matter, which is a thermodynamic phase representing sQGP mainly filled with exotic nuclear states, to be present in a certain region of phase diagram. This matter is found to be more stable thermodynamically than the vacuum and chiral-symmetric quark-gluon plasma phases (χS-QGP) in the region in phase diagram of high chemical potential and low temperature, although it is less stable than the normal nuclear matter. The thermodynamic relations of this matter are also determined. The relations of pressure versus baryon number density are found to be P ∼ d² for small number density, and P ∼ d[superscript 7/5] for large number density. The entropy density is found to be proportional to the temperature as s ∼ T⁵ for the normal nuclear matter, but s ∼ T for the exotic nuclear matter.
DOI: 10.14457/cu.the.2011.1703
title: Classifying chief complaint in ear diseases using data mining

description: Ears are the important organ for the hearing system. The system itself is very complicated. The clinicians attempt to determine the correct diagnosis using signs, symptoms and test results to formulate the hypothesis of the diagnosis before providing treatments. Most patients in this study have severe illness. Therefore, the clinicians decide to take the treatment by surgery rather than treating the patients with medicine. The result of the classification is very critical for the clinicians to support their diagnosis before giving the surgery to the patients. This study endeavors on using intelligent capability of data mining to discover hidden patterns in the data. Here, Artificial Neural Networks (ANN), Naïve Bayes and Decision Tree are utilized as techniques to classify patients with chief complaints in ear diseases. The results of classifying the ear diseases are very encouraging with the percentage accuracy of 100% for all techniques.
DOI: 10.14457/cu.the.2011.1704
title: Respiratory symptom and illness prevalence in relation to biomass fuel use in Chan Aye Thar Zan Township, Mandalay city, Mandalay Region, Myanmar

description: A cross-sectional study was conducted in Chan Aye Thar Zan Township, Mandalay City, Mandalay Region, Myanmar, in March, 2012, with the purpose of ascertaining associations between using biomass fuel (wood or charcoal) for cooking and prevalences of respiratory symptoms and illnesses in mothers, fathers, and children &lt;5 years old. This study was conducted in 425 households, using a standardized interviewer-administered questionnaire. Biomass fuel was used in 273 households (64.2%). In addition to biomass fuel use, prevalences were evaluated in relation to other cooking-related variables, other environmental characteristics, and socio-demographic variables. Seven, six, and five types of prevalences were assessed in children, mothers, and fathers, respectively (total 18). In a bivariate analysis, each independent variable was assessed separately in relation to each type of prevalence. First-stage multivariable logistic regression models were then constructed for each type of prevalence; biomass cooking and other independent variables for which p&lt;0.15 in bivariate analysis were included in these. Second-stage multivaiable logistic models were then constructed for each type of prevalence; biomass cooking and all independent variables for which p&lt;0.15 in first-stage models were included. In these models, biomass fuel use was positively associated with 16 of 18 types of prevalence assessed (88.9%). Positive associations were statistically significant (p≤0.05) or marginally significant (0.05
DOI: 10.14457/cu.the.2011.1705
title: Analysis of maternity leave policy case study : South Korea and Thailand

description: This study examines national legislation concerning current maternity leave policy and protection in a comparison between South Korea and Thailand with an international maternity model as shaped by Maternity Protection Convention 2000 (No.183) and its Recommendation (No.191) by International Labor Organization (ILO). National Labor laws and employment-related acts have been compiled for the sake of analysis. As analyzed with ILO regulations as benchmarks, findings show that Thai maternity leave policy is inferior to international standards and either to Korea’s one in 3 points. Firstly, in term of amount of leave, pregnant employee in the two countries is eligible to take 90 days leave but what differs is restriction on pre and post natal. Korea government seems to be more concerned on health security before and after childbirth with 6 compulsory postnatal leave whereas Thai laws allow leave voluntarily. Such case, Thai working mother is more likely to be at high risk of before-birth health insecurity if the mother prefers to postnatal leave as a whole. Secondly, in term of employment protection and discrimination, obviously, Thai working mother is more likely to confront high risk on job insecurity even though she is guaranteed not to dismissal. Still, promotion determination while taking a leave and same-position resumption when return are not ensured their places. Thus, after having a 90-day leave, the mother could be placed in lower position or not equal to the previous wage legally while Korean mother is protected her position. Lastly, in term of breaks for breastfeeding and childcare provision, Thai laws seem to see breastfeeding facilities as personal matters since no article legislates maternity facilities - nursing hours and breastfeeding facilities - in workplace whereas Korean laws openly shows appreciation on settlements of breastfeeding facilities in order to support maternity benefits, especially for the employed mothers who commit parental leave. Moreover, Korean employed mother is entitled to paid nursing recesses for more than 30 minutes twice per day when her child’s age is less than 12 months. Overall, seemingly, Thai maternity-related legislation takes distance to meet ILO maternity standards, rather than South Korea. Meanwhile, as a result of a proposal to leave extension to 24 weeks and breastfeeding facilities by Breastfeeding Center, the author sees that it is a challenging reform which would bring discrimination if it was applied in near future due to political situation and increasing minimum wage campaign currently. Besides, to be alert to ASEAN integration, woman-related labor reform should take in to account in Thai society.
DOI: 10.14457/cu.the.2011.1706
title: Study on performance of high temperature proton exchange membrane fuel cell operated on hydrogen from glycerol reforming process

description: This research concentrates on the performance analysis of a high-temperature proton exchange membrane fuel cell (HT-PEMFC) integrated with a glycerol reforming process. Firstly, the thermodynamic analysis of steam and autothermal reforming of pure glycerol and crude glycerol derived from a biodiesel production process is investigated as a basis of the development of a hydrogen production process from a renewable resource. The simulation results of both the glycerol steam and autothermal reforming show that under isothermal condition, increases in operating temperature and steam to crude glycerol increase hydrogen yield, whereas increasing oxygen to crude glycerol ratios causes a reduction of hydrogen concentration. An increase in the ratio of glycerol to methanol in crude glycerol can increase the amount of hydrogen produced. In addition, an optimal operating condition of glycerol autothermal reforming at a thermo-neutral condition that no external heat to sustain the reformer operation is required, is investigated. When considering the steam reforming of glycerol, it is found that to maintain the CO content of the reformate gas at a desired range for HT-PEMFC, the steam reformer can be operated at lower temperatures; however, a high steam to glycerol ratio is required. This requirement results in an increase in the energy consumption for steam generation. To determine the optimal conditions of glycerol steam reforming for HT-PEMFC, both the product composition and energy requirement are taken into consideration. The operational boundary of the glycerol steam reformer is also explored. Secondly, the efficiency and output power density of an integrated HT-PEMFC system and glycerol reformer is studied by using thermodynamic analysis and pseudo 2D model of HT-PEMFC. The theoretical analysis shows that increase in the anode stoichiometric ratio and steam to carbon (S/C) operation of reformer reduce CO poisoning effect at cell’s anode and therefore leads to enhanced cell performance. In addition, the optimum gas composition and flow rate is very dependent on cell operating current density and temperature. High S/C is essential when operating the HT-PEMFC at high current densities where CO has considerable impact on its performance. Optimal conditions that provide the maximum power density at a given efficiency are reported. Considering design of HT-PEMFC system for stationary application, the HT-PEMFC system with a water gas shift reactor in the glycerol processor shows the highest overall system efficiency compared to that without the water gas shift reactor and low-temperature proton exchange membrane fuel cell (LT-PEMFC) system.
DOI: 10.14457/cu.the.2011.1707
title: Theoretical evaluation of solid oxide fuel cell and gas turbine combined systems fed by ethanol

description: To present the performance analysis of a solid oxide fuel cell (SOFC) system fuelled by ethanol. The suitability of using ethanol for SOFC system is compared with other attractive renewable fuels, i.e., biogas and glycerol. The simulation results show that the SOFC system fuelled by ethanol provides the highest electrical and thermal efficiencies and less emission of carbon dioxide. The thermodynamic analysis of ethanol steam reforming indicates that high temperature and steam-to-carbon ratio are preferred operating conditions so as to obtain high hydrogen yield. The hydrogen production of ethanol steam reforming is improved when an adsorption-membrane hybrid system is considered. It is found that a higher hydrogen product can be obtained at a lower operating temperature and that the formation of carbon is likely to be reduced when a carbon dioxide adsorption is combined with the hydrogen production. Considering the integration of the ethanol steam reformer and SOFC, the recycle of anode exhaust gas to the reformer can reduce the energy required for preheating steam and enhance the electrical efficiency of the system. However, when SOFC is operated at high fuel utilization, an increase in the recirculation ratio of anode exhaust gas degrades the SOFC electrical efficiency. To improve the performance of SOFC system, a hybrid SOFC system with a gas turbine (GT) is also studied. The results show that the electrical efficiency of the SOFC-GT hybrid system raises with increasing the operating pressure (2-6 bar); however, the heat obtained from GT exhaust gas is reduced, thereby the SOFC-GT hybrid system cannot be operated at an energetically self-sustaining condition. Thus, the pressurized SOFC-GT hybrid system with a cathode exhaust gas recirculation is proposed with the aim to minimize the requirement of an external heat for air preheating, which is a major unit that requires the external heat. The results show that the SOFC-GT hybrid system with recycling cathode-exhaust gas can be run at the energetically self-sustaining condition. It is also found that a high cathode-exhaust gas recirculation ratio decreases SOFC electrical efficiency. Finally, a heat recovery of the SOFC-GT hybrid system is studied. Two designs of the SOFC system with uses of a high-temperature recuperative heat exchanger and a recirculation of cathode exhaust gas are compared. The results indicate that the SOFC system with cathode gas recirculation can achieve higher system efficiency and specific work.
DOI: 10.14457/cu.the.2011.1708
title: Recovery of rare earth elements from end of life fluorescent lamp

description: Fluorescent lamp is a gas-discharge lamp that uses electricity to excite mercury vapor. However, the United States Environmental Protection Agency classifies fluorescent lamps as hazardous waste, and recommends that they are segregated from general waste for recycling or safe disposal. In addition, main components of fluorescent lamp are rare earth phosphor including La (Lanthanum), Tb (Terbium), Ce (Cerium), Eu (Europium) and Y (Yttrium), the price of which has become increasing. Therefore, the used fluorescent lamps are considered as an important secondary resource for rare earth element. In this study, ultrasonic dry sieving as well as wet vibration sieving has been used for separation of rare earth elements from the ground used lamp. Sample characterization then separation, tests were conducted. Ultrasonic dry sieving in 5, 8, 10 and 12.5 µm for 2 minutes each was performed to determine the optimum sieve size, and then wet vibration sieving 5 µm was conducted in different times to compare wet and dry sieving. In the recovery of rare earth elements process, influences of sieving size and time were investigated in order to identify the optimum condition for the separation process. In term of the air classification which is an instrument to verify the separation performance of dry separation process, the optimum condition was obtained when the feed rate is 10 kg/h with rotation speed of 2000, 3000, 4000, 5000, 6000 and 7000 rpm by with and without compressed air.
DOI: 10.21227/qpd3-xz89
title: Malware Analysis Datasets: API Call Sequences

description: This dataset is part of our research on malware detection and classification using Deep Learning. It contains 42797 malware API call sequences and 1079 goodware API call sequences. Each API call sequence is composed of the first 100 non-repeated consecutive API calls associated with the parent process, extracted from the 'calls' elements of Cuckoo Sandbox reports.
DOI: 10.14457/cu.the.2011.1709
title: Palmprint identification system using shape matching and k-nearest neighbor algorithm

description: Palmprint identification is one of biometric methods to ascertain the identity of person. Although palmprint is not the most popular characteristic that we currently use, it is a powerful alternative for identifying in the future technology due to its uniqueness, stableness, convenience and ease of use. In recent surveys, there are many features on palm that can be used for automated recognition such as principle lines, wrinkles, ridges and datum points. Principle line which is the main line is proposed in this thesis. The system is divided into two main subsystems. The first part concerns with palmprint feature extraction using a cascade of consecutive filters to obtain the principle lines. To achieve the proposed system, recognition is provided as the second part to classify principle line image. Firstly, shape histogram is constructed from the extracted image by projections along vertical and horizontal axes. Then, the histogram of query image and the image in database are compared by using cosine similarity measure. Finally, K-Nearest Neighbor is employed to identify a person. The experimental results demonstrate the efficient system yielding high recognition accuracy (98.53%).