cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.14457/cu.the.2015.162
title: PROCESSING PLANT DESIGN OF TIN ORES AT SIKHARA MINING CO., LTD THAILAND

description: The purpose of this research is to conduct a pre-feasibility study of a processing plant design at the Bankha district, Ratchaburi province. In this research will focus on the different particle-size at percent grade of tin from 20 samples of 6 pitting (total weight is 596 kgs), the study included mineral processing by using physical separation, mineral analysis of sample by using x-ray fluorescence (XRF). The chemical analyses of samples are as follows: the sample -3 +4 mesh: 1.64% Sn, 0.07% Ta and 0.008% Nb, the sample -4 +14 mesh: 2.10% Sn, 0.07% Ta and 0.01% Nb, the sample -14+30 mesh: 2.37% Sn, 0.05% Ta and 0.008% Nb and the sample -30 mesh: 2.43% Sn, 0.07% Ta and 0.009% Nb, respectively. These results can be applied to the definition of main machine for tin ore processing plant such as trommel, jig separator, hydrocyclone, spiral concentrator, shaking table, ball mill, spiral classifier, vibrating screen, magnetic separator and high tension separator, and designed by using the commercial software “AutoCAD civil 3D”. The final tin concentrate can be upgraded to 74% Sn at a recovery of 90.0%. Financial model, consisted of cash flow analysis, net present values (NPV), and the Internal Rate of Return (IRR) are the main point for economics consideration. In this point, 79% of internal rate of return was calculated with the net present values of 447,779,678 baht and the payback period was 1.09 years.
DOI: 10.14457/cu.the.2015.163
title: Development of X-ray Imaging Technique for Liquid Screening at Airport

description: X-ray imaging technology is a viable option to recognize flammable liquids for the purposes of aviation security. In this study, an X-ray imaging technology was developed whereby, the image viewing system was built with the use of a digital camera coupled with a gadolinium oxysulfide (GOS) fluorescent screen. The camera was equipped with a software for remote control setting of the camera via a USB cable which allows the images to be captured. The image was analysed to determine the average grey level using a software designed by Microsoft Visual Basic 6.0. The data was obtained for various densities of liquid between 0.7 to 1.4 g/cm3 contained in a thin plastic bottle with diameter of 4.5 cm, 6.0 cm and 7.5 cm for X-ray energies ranging from 70 to 200 kVp. In order to verify the reliability of the constructed calibration data, the system was tested with a few types of unknown liquids. The developed system could be conveniently employed for security screening in order to discriminate between a threat and an innocuous liquid.
DOI: 10.14457/cu.the.2015.164
title: Fault Detection and Identification With Adaptive Neuro-Fuzzy Inference System

description: An algorithm that is not influenced by the line parameters is an option to overcome a few drawbacks of conventional approach especially in fault identification. Such algorithm should be independence on the power network configuration to be more generalized. In artificial intelligence, artificial intelligent network seems efficient and practical when mathematical model of the system is not available. As for fuzzy logic, it possess a capability to copy the sensing, generalizing, operating, processing and learning capability of human operator. This research implemented fuzzy system in the framework of adaptive network and then combines with discrete wavelet transform to obtain a great performance. A novel approach to implementing Gustafson-Kessel clustering algorithm have performed significant results for a better fault analysis tool using artificial intelligence. Results show that the scheme has ability on justifying the type of fault and estimate the fault distance in a small range of error. The proposed method also has very less involving of calculation and almost no affected by the fault resistance.
DOI: 10.14457/cu.the.2015.165
title: DENSITY AND VISCOSITY MEASUREMENT OF AQUEOUS AMINE SOLUTION OF AMINO ETHANOL FOR CARBON DIOXIDE ABSORPTION PROCESS

description: Carbon dioxide (CO2) causes the global issues on climate change and global warming. The sources of CO2 are from fossil fuel power plants. The chemical absorption by aqueous amine solution of amino ethanol of 2-(Diethylamino)ethanol (DEAE), 2-(Dimethylamino)ethanol (DMAE) and 2-(Methylamino)ethanol (MAE) are promising method to remove CO2 from fuel gases. Measurement of density and viscosity are the fundamental data for designing and modeling the absorption process. The objectives of this study are (1) to measure the density and viscosity of aqueous amino ethanol solutions and evaluate the effect of mole fraction and temperature on density and viscosity of amines. (2) to develop the correlation for prediction the data in the future. And (3) to investigate the effect of the various function groups attached to back-bone of amino ethanol. The results for the densities of DEAE, DMAE and MAE decrease with an increase of mole fraction and temperature. Also, the viscosities of all of the range of mole fraction of DEAE, DMAE and MAE decrease as temperature increases up to mole fraction of 0.4, 0.4 and 0.6, respectively and becomes lower. Moreover, the correlations by Redlich-Kister equation is the most suitable model which have been developed to represent the data and predict the data for equipment design. This equation gave the lowest percent absolute deviation (%AAD). The %AAD of density of DEAE, DMAE and MAE is 0.1590%, 0.0112% and 0.0261%, respectively. The %AAD of viscosity of DEAE, DMAE MAE is 1.9413%, 2.0312%, 1.4912, respectively.
DOI: 10.14457/cu.the.2015.166
title: DEVELOPMENT OF DATA COLLECTING TOOLS TO SUPPORT THE ESTABLISHMENT OF NATIONAL NUCLEAR FORENSICS CAPABILITY IN SOUTHEAST ASIA REGION

description: Nuclear forensics is recognized as an important part of maintaining nuclear security in any country, regardless of whether the country utilizes nuclear and radioactive materials or not. It is an effective tool in determining the origin of detected nuclear and other radioactive materials, and in providing evidence for the prosecution of acts of illicit trafficking and malicious use. The objective of this study is to develop a questionnaire to be used as a tool to self-evaluate the existing national capability in nuclear forensics in order to provide analysis of weaknesses or gaps in the overall system that require attention. The questionnaires is developed based on the guideline of the International Atomic Energy Agency (IAEA) and is reviewed by experts from various countries for its completeness and usability. Although the questionnaire has been reviewed by experts from several Southeast Asia member states and is expected to be used especially by the ASEAN, it contains no country specific part and may be used by any country that needs to know its current capability
DOI: 10.14457/cu.the.2015.167
title: HIGHLY DISPERSED AND A SINGLE-SITE PLATINUM CATALYSTS SUPPORTED ON SILICA-ALUMINA FOR CO OXIDATION AND PROPANE DEHYDROGENATION

description: The characteristics of SiO2-Al2O3 supports were tuned by three strategies in order to achieve highly dispersed, especially single-atom Pt sites using for CO oxidation or propane dehydrogenation (PDH). The strategies include incorporation of χ-Al2O3 and Si into γ-Al2O3 via solvothermal, variation of SiO2 content of Si-doped γ-Al2O3 via dry impregnation, and use of KLTL zeolite as a highly crystalline support. The results showed that dispersity could be effectively enhanced by incorporating dopants (χ-Al2O3 and Si). Pt-support interaction was particularly strengthened on Si-doped Al2O3 at low SiO2 loading, promoting highly dispersed Pt sites. The results from CO oxidation tests revealed a linear relationship between TOFs and amount of surface basicity of modified supports. It is suggested oxygen mobility plays a distinct role in controlling the surface reaction between CO* and O*, which were activated by different adjacent Pt sites. The proposed mechanism was strengthened by the TOFs of the modified catalysts in PDH remained unchanged. In addition, these highly dispersed Pt catalysts can also be applied in PDH due to the promotional effect on activity and selectivity to propylene. Interestingly, when dispersed Pt on KLTL zeolite, the first site-isolated mononuclear Pt catalyst with a well-defined structures and locations is presented. IR and X-ray absorption spectra and electron micrographs determine the structures and locations of the Pt complexes in the zeolite pores, demonstrate the platinum support bonding, and relationship between active site structures and catalytic performance. Furthermore, the single-atom Pt catalysts can be accounted as ideally catalytic sites in structure-insensitive reactions.
DOI: 10.14457/cu.the.2015.168
title: TRAVEL BEHAVIOR AND FACTORS INFLUENCING FREQUENCY OF USING INFORMAL TRANSPORT AND PUBLIC BUS IN URBAN AREA OF PHNOM PENH

description: For decades, paratransit modes such as Motodup and Remork can be commonly seen in the urban area of Phnom Penh. They play an important role as a major public transport for local travelers, even before the city bus was put into full operation in 2014. This study aims to analyze trip frequency of paratransit and city bus passengers by considering traveler’s socioeconomic variables, trip characteristics and operational characteristics of each mode. Using ordered probit modeling, data is analyzed based on 483 samples collected from four main areas of Phnom Penh, i.e., CBD, educational, residential and suburb areas. Results indicate that students do not use Motodup frequently, but they prefer Remork. Moreover, travel cost is seen to be the major factor that reduces the likelihood of using Motodup and city bus, but this variable is not found significant in determining the frequency of using Remork at all. In terms of attitudes, Remork and city bus passengers perceive comfort and availability importantly. The more important they value these two factors, the more frequent they would use such modes. Since city bus is a highly promoted public transport, policy makers should enrich the quality of comfort and availability as well as keep the travel cost low in order to increase the usage frequency.
DOI: 10.14457/cu.the.2015.169
title: Improvement of coordination system for product development process in automotive tire industry

description: This thesis was aimed to improve coordinating system of OE Technical Service (TS) department of an automotive tire manufacturer in Thailand. New product development process of TS department was studied in order to analyze and prevent root causes of existing problems and potential problem in the future. The analysis and improvement in this thesis applied various concepts and tools in quality improvement, such as process flowchart, Poka-Yoke, zero defect concept, Pareto chart, fishbone diagram, why-why technique, and FMEA. Some framework in automotive industry, such as APQP and AIAG’s manual, were also applied. From the application of the mentioned tools, this thesis improved process flowchart and created new documents of TS department to reduce problems occurrence and increase error detectability. This improvement was implemented to product development projects of the case company, and the result showed that this improvement helped the case company to eliminate the problems. Besides, this thesis provided suggestions to TS department for potential failures prevention with priority of potential problems.
DOI: 10.14457/cu.the.2015.170
title: Data reusability prediction for data bypassing

description: Cache bypassing emerged as a performance improvement method for shared Last-Level Caches (LLC) in multicore processors where large portions of data are never reused. However, most bypass techniques have relied on ad hoc methods such as counters and tables which cannot tackle the complexity of multicore workloads. In this dissertation, we propose an alternative method to predict cache bypassing using Support Vector Machine (SVM) models. Based on access traces obtained from representative benchmarks running on the Multi2Sim simulator, supervised SVM training was performed in order to obtain a bypass prediction model suitable for LLC in multi-core processors. The SVM outputs bypassing classifiers which are integrated on the simulator to quantify LLC performance improvements. Results show that, with appropriate parameters and kernel functions, SVM is capable of generating bypassing models which improve LLC performance on multicore processors, achieving an average 5.34% hit rate improvement across SPLASH2 benchmark combinations.
DOI: 10.14457/cu.the.2015.171
title: Discovering frequent episodes in time series

description: Frequent episode discovery is one of the most challenging tasks. An episode is a set of partially ordered occurrences of events in a period of time. However, in real-valued time series mining community, frequent episode discovery has not been addressed well. One of the most difficult problems is that rather than a sequence of discrete events, time series is a sequence of real-valued data. A pattern can be varied in shape of consecutive data points, so that events of the same type are difficult to identify. One can utilize Subsequence Time Series (STS) clustering technique to identify events in the time series, so that frequent episode discovery algorithm can be applied. However, the problem is that output of current STS clustering algorithms cannot be used for the frequent episode discovery because of two main reasons. First, the previously proposed STS clustering algorithms were claimed to be meaningless because the outputs of STS algorithms will always converge to sinusoidal form. Second, some recent STS clustering algorithms that claim to produce meaningful results fail to dispose of trivial subsequences. This leads to inflation and redundancy of the patterns. This thesis approaches the problems by proposing a new STS clustering algorithm to effectively identify interesting events in time series. More importantly, the proposed algorithm also discard trivial or inessential subsequences. As a result of STS clustering, the patterns can be considered as discrete events, similar to those used in general episode discovery algorithms. Moreover, this thesis extends the proposed method to dynamic time warping (DTW) distance, shape-based averaging, and proposes an optimization over the usage of DTW. Experiments show that the proposed framework can perform the episode discovery from time series effectively and efficiently.
DOI: 10.14457/cu.the.2015.172
title: Guidelines for the leadership development of primary school principals under the jurisdiction of Phnom Penh Municipal Department of Education, Youth and Sport in Cambodia

description: The purpose of this research was 1) to study the theoretical framework of leadership characteristics and the leadership development methods; 2) to study the actual and desirable leadership characteristics and the leadership development needs; and 3) to propose guidelines for the leadership development of primary school principals under the jurisdiction of Phnom Penh Municipal Department of Education, Youth and Sport in Cambodia. The population was 164 primary school principals. Research instruments were literature review, semi-structured interview, questionnaires, and evaluation form. The data were analyzed by using mean, standard deviation, modified priority needs index (PNI modified), and content analysis. The results were concluded as follows:1) The theoretical framework of leadership characteristics was composed of 10 characteristics including (1) valuing people, (2) developing people, (3) building community, (4) displaying authenticity, (5) envisioning the future, (6) sharing leadership, (7) idealized influence, (8) inspirational motivation, (9) intellectual stimulation, and (10) individualized consideration. The leadership development methods consisted of (1) building self-awareness, (2) acquiring education, (3) attending developmental programs, (4) getting experience, (5) getting coaching, (6) getting mentoring, (7) attending succession planning, (8) training on LMX theory, (9) attending feedback-intensive programs, and (10) building motivation.2) Overall, the actual leadership characteristics indicated moderate level, including valuing people, envisioning the future, and idealized consideration, were at high level respectively; followed by intellectual stimulation and sharing leadership, were at moderate level while the rest of leadership characteristics was at low level. The desirable leadership characteristics were at high level in overall. The leadership characteristics needed to develop were (1) building community, (2) displaying authenticity, (3) idealized influence, (4) inspirational motivation, (5) and developing people respectively.3) Guidelines for the leadership development revealed that the priority-setting methods were (1) attending developmental programs, (2) getting coaching, (3) getting mentoring, (4) getting experience, (5) attending feedback-intensive programs, (6) acquiring education, and (7) building motivation.
DOI: 10.14457/cu.the.2015.173
title: Defect reduction in ready rice packaging by applying Six Sigma approach

description: Ready Rice product is a ready to eat rice in a sealed plastic cup. It has been increasingly accepted by customers. The studying company had launched the Ready Rice products since 2014 but the defective rate had been found increasingly. The objective of this study is to reduce the defects of the Ready Rice product in this company.This study applied DMAIC steps of Six Sigma approach which is the systematic procedure based on statistical methods to reduce the defective rate resulted in higher cost approximately 35,342 THB per month. Six Sigma approach is applied starting from a define phase to identify a major product problems which are the out of shape, the wrinkle of seal and the illegible date code of plastic cup. Then, in measure phase, the high defective percentage of 5.14% of the Ready Rice production is measured. Various quality improvement tools such as Cause & Effect diagram, Failure Modes and Effect Analysis (FMEA) and Pareto diagram are applied in analyze phase to determine the causes of each defect type. It is also proved by the hypothesis testing that there is one, three and two significant factors related to the defective rate of the out of shape, the wrinkle of seal and the illegible date code of plastic cup, respectively. All factors are the process parameters of the retort and sealing machines such as the pressure and temperature of the retort machine and temperature, time and vacuum of the sealing machine. The design of experiment based on the analysis of variance (ANOVA) are deployed at improve phase to determine the suggested machine setting with respect to the minimum overall defective rate. The p chart are deployed to monitor the process at control phase by setting the process parameters at 1,700 mbar of retort machine’s pressure, 160 °C of retort’s machine temperature, 150 °C of sealing machine’s temperature, 4 second of sealing time and 10 bars of sealing vacuum. After process improvement implementation, the overall defective rate is reduced by 56.42% from 5.14% to 2.24%. As the results, the cost of defects is also reduced by 53.17% from 35,342 to 16,549 THB per month. Moreover, the process capability and process performance are increased from 1.04 to 1.17 and 0.54 to 0.67, respectively.
DOI: 10.17632/9cxpptkhmc.3
title: Data for: The Impact of the Land Certificated Program on the Farmland Rental Market in Rural China

description: This dataset include the variables used in this paper.
DOI: 10.21227/8wk5-yt04
title: Short-Term Photovoltaic Power Forecasting Using an LSTM Neural Network and Synthetic Weather Forecast

description: The aggregated load of the west region of electrical reliability council of Texas (ERCOT) is usedas the benchmark in this paper. The hourly weatherdata from different local data centers of the same regionis collected from the national renewable energy laboratory(NREL) website for the period of 2012 -2015.
DOI: 10.14457/cu.the.2017.184
title: ประเด็นทางญาณวิทยาในแนวคิดเรื่องชุมชนแห่งการสืบเสาะของแมทธิว ลิปแมน

description: เป้าหมายของวิทยานิพนธ์ฉบับนี้ต้องการสนับสนุนแนวคิดชุมชนแห่งการสืบเสาะ(Community of inquiry/ COI) ของแมทธิว ลิปแมน (Matthew Lipman) ในประเด็นทางญาณวิทยา แนวคิดดังกล่าวลิปแมนรับอิทธิพลมาจากปรัชญาการศึกษาของจอห์น ดิวอี้ (John Dewey) ในเรื่องแนวคิดปฏิบัตินิยมและการเรียนรู้ร่วมกันเป็นกลุ่ม ประเด็นทางญาณวิทยาที่จะศึกษาได้แก่ 1) ปัญหาความสามารถในการใช้เหตุผลของเด็กในทฤษฎีพัฒนาการทางการรู้คิด (Theory of Cognitive Development) ของ ฌอง เพียเชต์ (Jean Piaget) และ 2) ข้อถกเถียงในญาณวิทยาสังคมได้แก่ ปัญหาในเรื่องการไตร่ตรองร่วมกันเป็นกลุ่ม(Group deliberation) และ การเรียนร่วมกันเป็นกลุ่ม (Collaborative Learning) ผู้เขียนได้แสดงให้เห็นว่าวิธีชุมชนแห่งการสืบเสาะสามารถหลีกเลี่ยงปัญหาดังกล่าว และผู้เขียนแสดงให้เห็นว่าวิธีชุมชนแห่งการสืบเสาะมีข้อได้เปรียบทางญาณวิทยา ผู้เขียนยังได้เสนอแนวทางใหม่ที่จะช่วยให้วิธีชุมชนแห่งการสืบเสาะมีประสิทธิภาพเพิ่มขึ้นสำหรับการเรียนในชั้นเรียนโดยประยุกต์จากข้อเสนอของแบร์ด เรย์ (Brad Wray) ในเรื่องการค้นคว้าร่วมกันเป็นกลุ่ม
DOI: 10.14457/cu.the.2017.185
title: ความเป็นเลิศทางคุณธรรมและความเป็นเลิศทางปัญญาในจริยศาสตร์นิโคมาเคียน

description: บทคัดย่อ จริยศาสตร์ของอริสโตเติลถามคำถามว่าชีวิตที่ดีคืออะไร หรือคุณค่าในชีวิตของมนุษย์คืออะไร อริสโตเติลตอบว่าชีวิตที่ดีต้องมีความเป็นเลิศสองประการคือความเป็นเลิศทางปัญญาและความเป็นเลิศทางคุณธรรม ผู้ศึกษาจริยศาสตร์ของอริสโตเติลส่วนใหญ่ตีความความเป็นเลิศทางปัญญาและความเป็นเลิศทางคุณธรรมไปคนละทาง และแต่ละทางมีหลักฐานสนับสนุนในตัวบทจริยศาสตร์นิโคมาเคียน วิทยานิพนธ์นี้ทำความเข้าใจการตีความอริสโตเติลสองสายที่ไม่ลงรอยกัน คือฝ่ายอลาสแดร์ แมคอินไทร์ ซึ่งมีความคิดแบบปัญญานิยม และฝ่ายมาร์ธา นุสบัม ซึ่งวิจารณ์ฝ่ายปัญญานิยม ข้าพเจ้าเสนอว่าความคิดทั้งสองแบบมีที่มาจากตัวบทจริยศาสตร์นิโคมาเคียนเอง และข้าพเจ้าเสนอทางออกที่จะทำให้อริสโตเติลสอดคล้องในตัวเอง ด้วยการตีความปัญญาทางจริยธรรมเป็นสองแบบ ดังมี ทอมัส อไควนัส ซึ่งเป็นนักคิดสายอริสโตเติลในยุคกลาง เป็นตัวอย่าง ข้าพเจ้าเสนอว่าการตีความปัญญาทางจริยธรรมเป็นสองแบบเท่านั้นจึงทำให้เราสามารถเข้าใจความเป็นเลิศทางปัญญาและความเป็นเลิศทางคุณธรรม และความสัมพันธ์ระหว่างความเป็นเลิศทั้งสอง อย่างที่อริสโตเติลอธิบายไว้ได้
DOI: 10.14457/cu.the.2017.186
title: แนวคิดของลูชาโน ฟลอริดิ เรื่อง ความเป็นจริงในฐานะสารสนเทศ

description: ลูชาโน ฟลอริดิ(Luciano Floridi) เสนอแนวคิดที่เรียกว่าปรัชญาสารสนเทศ. ปรัชญาสารสนเทศนี้เป็นแนวคิดที่ถกเถียงกับทฤษฎีการสื่อสารหรือทฤษฎีสารสนเทศแบบคณิตศาสตร์ซึ่งเป็นแนวคิดที่มองว่าสารสนเทศคือหน่วยของข้อความในระบบการสื่อสาร. แต่สำหรับฟลอริดิแล้ว ปรัชญาสารสนเทศนี้เป็นการพิจารณาสารสนเทศในฐานะมโนทัศน์พื้นฐานทางปรัชญา(Philosophia Prima). ประเด็นสำคัญสำหรับปรัชญาสารสนเทศในฐานะมโนทัศน์ทางปรัชญาก็คือ สารสนเทศเป็นองค์ประกอบของการอ้างความรู้ เพราะว่าการได้รับสารสนเทศที่เป็นจริงถือเป็นส่วนหนึ่งของเหตุผลสนับสนุนความเชื่อ(Justified Belief). และข้อเสนอสำคัญในปรัชญาสารสนเทศของฟลอริดิคือแนวคิดเรื่องสัจนิยมแบบโครงสร้างสารสนเทศ กล่าวคือ สารสนเทศเป็นโครงสร้างการอธิบายความเป็นจริง. สัจนิยมแบบโครงสร้างสารสนเทศจึงถือเป็นข้อเสนอทางอภิปรัชญาผ่านแนวคิดปรัชญาสารสนเทศ. วิทยานิพนธ์ฉบับนี้จะทำการศึกษาประเด็นอภิปรัชญาในปรัชญาสารสนเทศของฟลอริดิ และเสนอเหตุผลปกป้องปรัชญาสารสนเทศของฟลอริดิจากข้อโต้แย้งของนักปรัชญาท่านอื่นๆ. และผู้วิจัยจะแสดงให้เห็นปัญหาของปรัชญาสารสนเทศของฟลอริดินั่นก็คือ ปัญหาระดับชั้นทางญาณวิทยา จากนั้นผู้วิจัยได้เสนอแนวทางหลีกเลี่ยงปัญหาระดับชั้นทางญาณวิทยาด้วยแนวคิดมุมมองอัตวิสัยและวัตถุวิสัยของจิตสำนึกในแนวคิดของธอมัส เนเกล(Thomas Nagel). มุมมองอัตวิสัยและวัตถุวิสัยของจิตสำนึกคือการถอยออกมาจากมุมมองอัตวิสัยแล้วพิจารณามุมมองเดิมเป็นวัตถุของจิตสำนึก ซึ่งการถอยออกจากมุมมองเดิมนี้ทำให้เห็นความสัมพันธ์ระหว่างมุมมองเดิมกับโลก. การมองเห็นความสัมพันธ์ของมุมมองเดิมกับโลกจะทำให้เกิดการประเมินมุมมองของตนเองและหลีกเลี่ยงปัญหาระดับชั้นทางญาณวิทยาได้