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Itemศรีศักดิ์ จามรมาน รายงานเรื่อง "ไอที" มหาวิทยาลัยออนไลน์ สร้างโอกาสทางการศึกษาให้คนยุคไอที(Telecom Journal, 2011-06-01)
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Itemอีบุ๊ก(Daily News, 2011-07-22)
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Itemไตรมาสแรกของปี พ.ศ. 2553 เศรษฐกิจของโลก เสมือนจริงมีมูลค่ากว่า 5,300 ล้านบาท(window IT Pro Magazine, 2010-09-13)บทความเรื่อง "ไตรมาสแรกของปี พ.ศ. 2553 เศรษฐกิจของโลกเสมือนจริงมีมูลค่ากว่า 5,300ล้านบาท" โดย ศ.ดร. ศรีศักดิ์ จามรมาน รองอธิการบดีฝ่ายเทคโนโลยีสารสนเทศ มหาวิทยาลัยอัสสัมชัญ
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Itemเยือน "Sala de Provence" บ้านเล็ก(มีสไตล์) ในป่าใหญ่(Praew, 2014-04-02)
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ItemAn integral equation model for a binary fission process( 2010) Winley, Graham K.A new probabilistic modeling approach is used to describe the transient and stable stages of growth of a population consisting of viable cells and vegetative cells. Viable cells are capable of division at the end of a random life-time (generation time) and when a cell divides it produces exactly two newborn cells. On average, at time t, α(t) of these two newborn cells are viable cells and 2 - α(t) are vegetative cells, which do not divide at any time. The model is developed by modifying the integral equation used by demographers to study the growth of human populations. The solution of the model is studied using various biologically plausible assumptions concerned with the inputs α(t) and the probability distribution of the generation time and comparisons made with other modeling approaches indicate that the new model is easier to formulate and analyze, provides a more complete analysis, and enables the incorporation of assumptions concerning environmental and internal cell factors that influence the production rate of viable cells.
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ItemUsing the students-as-customers concept in technology disciplines: students' perspectives( 2010) Boonlert WatjatrakulEducational institutions increasingly adopt the students-as-customers concept to satisfy their students. Understanding students’ perspectives on the use of this business concept in educational institutions is necessary for the institutions to effectively align these perspectives with their management practice. The study investigates whether students in technology and business disciplines have significantly different attitudes toward using the students-as-customers concept in educational institutions and explores the impact of treating students as customers in technology disciplines under students’ perspectives. The results from quantitative and qualitative data analyses show that technology students, in contrast to business students, fairly disagree with educational institutions to treat students as customers. Treating students as customers in technology disciplines will have a negative influence on teaching performance, instructor-student relationships and educational institutions’ aim, but a positive influence on service quality in educational institutions. The paper discusses the findings and concludes with implications and limitations of the study.
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ItemHybrid Technique and Competence Preserving Case Deletion Methods for Case Maintenance in Case-Based Reasoning( 2010) Lawanna, A. ; Daengdej, J.Case-Based Reasoning (CBR) is one of machine learning algorithms for problem solving and learning that caught a lot of attention over the last few years. In general, CBR is composed of four main phases: retrieve the most similar case or cases, reuse the case to solve the problem, revise or adapt the proposed solution, and retain the learned cases before returning them to the case base for learning purpose. Unfortunately, in many cases, this retain process causes the uncontrolled case base growth. The problem affects competence and performance of CBR systems after few runs. This paper proposes two case maintenance methods; the first method is Hybrid technique which combines case addition strategy and the footprint deletion and footprint utility deletion strategy and the second is competence-preserving case deletion technique which is consisted of four steps: determine a set of target problems, determine a candidate of cases , determine target problem and its candidate, delete less relevant cases.
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ItemCreatinine prediction from body composition a neural network approach( 2011) Thitipong Tanprasert ; Chularat TanprasertCreatinine, a naturally-produced chemical compound in blood, has been commonly used as a reliable indicator of kidney function. Creatinine level is typically obtained from blood-test. In this paper, a technique for predicting the criticality of creatinine level in blood is presented. The proposed technique takes only body size and mass parameters obtained from advanced weighing scale and body scanner, allowing the prediction to be done more casually. The technique applies a multi-layered feed-forward neural network for developing the prediction model. The achieved overall prediction accuracy is in the vicinity of 88% where the average false negative rate and the average false positive rate are 22.15% and 8.26%, respectively.
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ItemEfficient bitstream compression using historical-based grouping and size-based coding rearrangement( 2009) Thotsapon Sortrakul ; Wuthikrai TharachatrData storage becomes one of the important factors for most of large enterprises in increasing the cost, chip area, and dissipation. Large enterprises usually create redundancy of repeated digital messages through communication and documentary. In order to minimize these kinds of redundant bitstream, this paper presents a novel algorithm for lossless data compression by developing Historical-Based grouping and Sized-Based Coding Rearrangement approaches to reduce the code size used in compress redundant data flows. The Historical-Based grouping technique improves efficiency of data compression by implementing knowledge-based dictionary that is adaptive and can analyze the existing text coding with the incoming text by considering frequency of same text that has been compresses. In this case, if a compressed text besides that particular compressed text is the same, then this algorithm will group them into a "phase" by using just a particular compression code or symbol to identify that phase. This technique can also efficiently reduce compressed data size by extending a particular compression text length from "word" to "phase", from "phase" to "sentence", from "sentence" to "paragraph", indefinitely depended on repetition of the same binary patterns and amount of available memory allocated to store it. This technique is also able to group various groups of duplicated texts into a single code if those text groups are located in the same text area, same length of space between groups of texts, and set special symbols to link among each group of texts if space lengths are not the same. The objective of this technique is to analyze the historical coded data to minimize the coded size either to group or not to group the same binary patterns based on their frequencies. However, coding of the same binary patterns by using only the knowledge-based dictionary approaches might not be able to efficiently minimize the compressed patterns since frequencies of specific patterns are different. The data that being encoded should be frequency-based analyzed and grouped as long as possible by using historical-Based Grouping approach, then the compressed output should be rearrange based on their coding sizes and text lengths in which the result of total bit size should be concerned and minimized. Normally, longest or mostly-use coded text should be matched with the shortest code or symbol to ensure that every codes are efficiently utilized and total memory space requirement for that particular file is minimized.
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ItemThe Adoption and Use of ICT in Thailand and Vietnam( 2012) Winley, Graham Kenneth ; Lau, Sim KimThis exploratory study compares the adoption and use of ICT in the developing nations of Vietnam and Thailand by examining the nature and structure of the IT profession in medium to large size organizations. A theoretical framework is used with three related components: domains of IT professional expertise; the scope of the IT professional’s knowledge, skills, and experience; and specific knowledge and skills associated with the domains of professional expertise. The findings provide insights that are not found in existing reports which address ICT issues at a national rather than an organizational level. In particular, findings concerned with the first two components of the framework for both nations are compared to predictions about the adoption and use of ICT in organizations in technologically developed nations.
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ItemIntention to Use a Free Voluntary Service: The Effects of Social Influence, Knowledge and Perceptions( 2013) Boonlert WatjatrakulPurpose – This empirical study aims to understand the interrelationship among the key technology adoption factors including social influence, individual existing knowledge, and individual perceptions of technology (i.e. usefulness, ease of use, and enjoyment) and their effects on individual intention to use a free voluntary service. Design/methodology/approach – The survey method is employed to collect data from universities offering the free mobile messaging service. A structural equation modeling analysis technique is used to analyze data reliability and validity in the measurement model and examine causal relationships among the constructs in the structural model. Findings – The results show that social influence affects individual knowledge and perceptions of the service (perceived usefulness, perceived ease of use, and perceived enjoyment) and successively influences the individual intention to use the free voluntary service. This study indicates that the intrinsic value of perceived enjoyment has a greater impact than the extrinsic value of perceived usefulness in terms of its effect on individual intention to use a free voluntary service. In addition, the effect of perceived usefulness of alternative systems should be taken into account when using perceived usefulness from the technology acceptance model to predict individual’s technology adoption decisions under the free voluntary setting. Originality/value – This study fills the gap in the technology adoption literatures regarding the free voluntary service adoption based on social influence, individual knowledge, and individual perceptions of technology. It assists academics to understand the drivers of technology acceptance under the free voluntary setting and provides guidance for organizations to increase users’ acceptability of their free voluntary services.
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ItemMEMS Technology for Optical Switching( 2013) Kornkamol ThakulsukananOver the last ten years, microelectromechanical systems (MEMS) devices have received attention in many application areas such microwave, wireless, and optical networks. Especially in optical networks, MEMS technology is employed to provide the advantages of large switch matrix size with low loss at an optimum cost [1,2]. Therefore, optical switches based MEMS technology are now widely used and are considered a good option for optical switching networks. Moreover, they also provide wavelength insensitivity, polarization insensitivity, scalability, and very low crosstalk [3-5]. MEMS optical switches provide fast switching speeds ranging from milliseconds to several hundred microseconds. In this article, MEMS-based optical switches are reviewed including their advantages and disadvantages.
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ItemPerformance Analysis of Adaptive Location Update Schemes for Continuous Cell Zooming Algorithm in Wireless Network( 2016) Tun, Khin Cho ; Kunagorn KunavutTo reduce the transmitted power of base stations in mobile wireless networks, continuous cell zooming algorithm is a feasible dynamic cell zooming algorithm. In this algorithm, location management is required in order to know the locations of users. Movement-based Update is not compatible and the application of Convention Periodic Update (CPU) scheme in continuous cell zooming algorithm can lead to a high signaling cost. Thus, aiming to highlight the effectiveness of newly proposed location update schemes, Time-Adaptive Periodic Update (TAPU) and Location-Adaptive Periodic Update (LAPU), a simulation-based performance analysis is conducted. Applying in continuous cell zooming algorithm, the performances of TAPU and LAPU are compared to that of Convention Periodic Update (CPU) scheme in terms of transmitted power ratio, outage ratio and the number of update messages. The performances of TAPU and LAPU are analyzed in a network with different number of users and in a network with different average moving speeds of users. The results show that compared to CPU, both TAPU and LAPU have no significant effect on power saving capability of continuous cell zooming algorithm in every scenario. Meanwhile, LAPU and TAPU give a significant reduction of update messages in every scenario. In terms of QoS effect, LAPU gives approximately the same outage ratio as CPU and a higher outage ratio occurs in TAPU.
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ItemAn exploratory study of expectation in IT skills in a developing nation: Vietnam( 2016) Lau, S K. ; Winley, Graham K. ; Leung, Nelson K. Y. ; Tsang, Nicole ; Lau, Sim YeeThe purpose of this study is to explore expectations in information technology skills for organizations in Vietnam, a developing country in South East Asia. Previous research in Vietnam has mainly focused on information technology adoption; this study offers an insight into the demands of information technology skills in Vietnam. A theoretical framework consisting of five domains of expertise is used to examine the nature and structure of information technology profession in Vietnam. Results from the study show that there is an anticipated increase in demand for information technology professionals who possess deep skills in a broad scope of roles and experience both in information technology and other business domains. Technical skills in the technology infrastructure and services domain in combination with strong communication and problem solving qualities are highly valued by Vietnamese employers.
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ItemDeterminants of the Success of Information Technology Project Management in Thailand( 2015) Winley, G. K.A theoretical model of information technology (IT) project management was formulated based on the results of previous studies incorporating transactional and transformational leadership styles, team diversity, and team culture as determinants of team processes and project outcomes. The study addresses the lack of previous studies of IT projects and is concerned with infrastructure and software projects conducted in cross‐functional environments with co‐located teams in the context of Thailand. The model was tested and developed to a final model using data collected from a sample of 219 professionals with experience in IT projects in Thailand. The results confirmed several reported effects of leadership styles, team diversity, and culture on team cooperation, cohesion, and conflict and their subsequent effects on performance and psychosocial project outcomes. The findings highlighted results not commonly reported in previous studies of IT project management concerning the role of dominant cultural characteristics of Thai society at the level project teams as well as important direct effects of leadership styles and aspects of team diversity on performance and psychosocial outcomes. Based on the findings practical recommendations for improving IT project outcomes are presented.
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ItemFiltering Test Case Selection for Increasing the Performance of Regression Testing( 2016) Adtha LawannaUnder the concept of using software testing, the problems are preparing the smallest size of the selected test cases, fixing bugs, predicting the estimated testing time and numbers of the tester. The traditional methods are developed to solve these issues. Unfortunately, they cannot be applied for all reasons. Therefore, the filtering test case selection model is proposed to solve these problems and to increase the efficiency of the regression testing. It prepares the methods of filtering, classifying, and selecting the appropriate test cases. Accordingly, it gives the smaller size of the selected test cases than the traditional selections as 0.23–3.96%. When consider the fault rate measured by the developed technique is also less than those methods equivalent to 13–69%. Furthermore, the testing time and the amount of testers are also less than the comparative studies as about 2–71%, and 13–69% respectively.
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ItemFactors Affecting the Success of Enterprise Resource Planning Systems in Thailand( 2015) Winley, Graham Kenneth ; Supavadee Nontakaoprevious studies affect the success of thedevelopment, implementation, adoption, and use of Enterprise Resource Planning systems (ERP) inorganizations. Six factors organized in two categories (Characteristics of Users and the System andOrganizational Issues and System Development Approaches) were decomposed into 73 associated indicators.Data related to the indicators was collected by questionnaire from a sample of 211 stakeholders withexperience with ERP used in organizations in Thailand. Although the results confirmed many findingsreported in previous studies important differences were found between male and female stakeholders as wellas between those working in IT andnon IT positions. In addition, compared to previous studies less emphasisthan expected was given to the importance of characteristics of the organization, characteristics of users,change management activities, and aspects of system development and implementation. The findings are ofparticular importance to ERP project leaders/members, users, and vendors in Thailand.
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ItemVendor Selection Strategy for IT Outsourcing: The Weighted-Criteria Evaluation Technique( 2014) Boonlert WatjatrakulPurpose – Most firms select their information technology outsourcing (ITO) vendors based on the two methods of the weighted-criteria evaluation technique – the “qualification score plus the lowest bid price for the highest price score (QS-LBHPS)” and the “qualification score plus the average bid price for the middle price score (QS-ABMPS).” This paper aims to understand whether these two methods provide the same or different results of vendor selection and how the proportional weights of a vendor’s qualification and bid price affect the vendor selection results under the two methods. Design/methodology/approach –In total, 1,000 experimental tests were carried out using the developed spreadsheet template to examine vendor selection results of the two methods (QS-LBHPS and QS-ABMPS) and compare the vendor selection results under three conditions of vendors’ qualification and price weights. A correspondence analysis was also used to determine the proximal relationships among the selection results of the weighted criteria technique under the comparable methods. Findings – The results indicate that, when using the two methods of the weighted criteria technique for a vendor selection, the selection results are significantly correspondent. In addition, the proportions of qualification and price weights affect the selection results under the two methods. The different proportions of qualification and price weights under the two methods yield the same selection results rather than different results. Originality/value – This study fills the gap in ITO literatures concerning the vendor selection strategy. No empirical studies have been undertaken to compare the results of vendor selection under the two methods of the weighted-criteria evaluation technique. The findings enable a firm’s selection team to apply the weighted-criteria evaluation technique effectively and realize that vendor selection results are altered based on the predefined proportions of qualification and price weights.