• Corrosion Science and Technology
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• v.21 no.1
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• pp.41-52
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• 2022

Herein, we report polyvinyl butyral composites coatings containing various loadings of 72-h bath sonicated hexagonal boron nitride particles (5 ㎛) to enhance barrier properties of coatings. Barrier properties of coatings were determined in 3.5 wt% NaCl after different time periods of immersion via electrochemical techniques such as open circuit potential, electrochemical impedance spectroscopy, and potentiodynamic polarization test. Coatings containing sonicated hexagonal boron particles exhibited improved corrosion resistance for longer periods of immersion compared to neat coating. We also discussed effects of hexagonal boron nitride on healing properties of polyvinyl butyral. Coatings containing 1.0 wt% loading of sonicated hexagonal boron nitride showed improved long-term barrier properties than coatings with other compositions. The presence of hexagonal boron nitride also affected the healing properties of polyvinyl butyral coatings besides their barrier properties. Such improved barrier properties of composites coatings were attributed to the high aspect ratio, plate-like shape, and electrically insulated nature of the filler.

• Journal of Engineering Education Research
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• v.11 no.3
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• pp.12-23
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• 2008

The purpose of this study is to explore teaching and learning strategies through analyzing cases of foreign engineering education. With the analysis criteria composed of engineering education model, teaching and learning method, evaluation strategy, and technology supporting strategy, 10 foreign colleges of engineering in 5 countries were examined and analyzed. Teaching and learning strategies deduced from analysis state as follows. First of all, it need to develop engineering education models that reform should be made in systematic approach to teaching and learning, workplaces and laboratories, evaluation, technology support, etc. Secondly, the strategy for teaching and learning recommends supporting student directed learning, active learning participation, and collaboration learning by inductive learning strategies such as problem based learning, inquiry learning, project based learning, studio based learning, and blended learning. Thirdly, the evaluation strategy suggests that evaluation should be made to reflect students' learning and facilitate continuous learning based current learning results while it is necessary to build up a whole evaluation system. Finally, it is the educational technology approach for systematic engineering education that is required considering that many foreign colleges of engineering have reformed engineering education through technology supporting systems and are maximizing research and education in connection with other universities. This study is expected to contribute as preliminary data in developing further teaching and learning models and strategies for nurturing engineering students.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.12
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• pp.504-510
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• 2016

This study presents a model for blended problem-based learning (BPBL) for engineering colleges in Mongolia in order to efficiently train talented Mongolian specialists "With problem-solving skills for the current information technology era. BPBL is learner-centered teaching method that promotes learning. Moreover, current teaching methods in the engineering colleges of Mongolia should change to novel and flexible teaching environments and methods that meet learners' needs. Thus, using BPBL for engineering education development in Mongolia will provide more teaching possibilities, which will assist the professors. Over the past few years, universities in Mongolia have established the Center for Teacher Development, which provides training and gives advice to staff about teaching methods, although the majority of lectures are still fragmentary and anecdotal. Therefore, many professors teach the way they learned, and most teaching methods used up till now have been teacher-centered. However, modern college instructors and modem society demand different engineering teaching methods from teachers who are more familiar with old-fashioned methods. Furthermore, the methods should meet the needs of individuals and groups who prefer to apply technology in the engineering learning process. Using an effective engineering strategy in the development of a new engineering teaching method will lead to its success.

• International Journal of Knowledge Content Development & Technology
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• v.6 no.1
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• pp.41-68
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• 2016

This paper aims to analyze the function of database management systems from the perspective of librarians working in engineering institutions in Andhra Pradesh. Ninety-eight librarians from one hundred thirty engineering institutions participated in the study. The paper reveals that training by computer suppliers and software packages are the significant mode of acquiring DBMS skills by librarians; three-fourths of the librarians are postgraduate degree holders. Most colleges use database applications for automation purposes and content value. Electrical problems and untrained staff seem to be major constraints faced by respondents for managing library databases.

• Proceedings of the IEEK Conference
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• 2008.06a
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• pp.1129-1130
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• 2008

고령사회로 진입함에 따라 보행보조기의 관심이 증가되고있다. 고령자는 로봇의 조작능력이 매우 떨어지기 때문에 외부환경변화(장애물, 위험상황)에 민첩하게 대응할 수 없다. 본 논문에서는 보행보조로봇 사용자가 구동 중 실수를 하더라도 진행하고자 하는 방향의 장애물 대하여 안전하게 회피하는 방법을 제안한다. 보행보로로봇에 레이져 센서를 정면에 장착하여 장애물을 판단하고 로봇이 회피 또는 정지하도록 하였다.

• International Journal of Knowledge Content Development & Technology
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• v.7 no.1
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• pp.5-22
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• 2017

This study discusses the library professionals' perception of the ICT Applications in engineering college libraries in Tamil Nadu. The relevant data was collected from the library professionals in the self financing engineering colleges situated in Kanchipuram and Thiruvallur district of Tamil Nadu. 625 questionnaires were distributed, 504 replied with a response rate of 80.64%. It was found that the respondents with experience 'Below 5 years'gave 'Lack of infrastructure' as the first priority. 'Lack of interest on the part of users' and 'No support from administration in training library professionals' were the second and third preferences indicated by the respondents. The least preferences were given for 'Fear of ICT application'. Similarly, respondents with experience '6-10 years' indicated 'No support from administration in training library professionals' as the first priority. The least preference was given for 'Inadequate training in ICT applications' by the above respondents. It can be inferred that the professionals accepted and need the training in ICT applications.

• Journal of Sensor Science and Technology
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• v.19 no.3
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• pp.230-237
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• 2010

In sensor signal conditioning and processing, offset and drift characteristics of an operational amplifier are an important factor when the amplifier is used for a precise sensor signal amplifier. In order to use it in high accuracy, an expensive trimming or a complex compensation circuit is required. This paper presents the improved sensor signal conditioning and processing device for ubiquitous sensor network(USN) application or general purpose by developing a hardware of the circuit for reducing the offset voltage and drift characteristics, and a software for its control and sensor signal processing. We realize better offset voltage and drift characteristics of the signal conditioning circuit using low cost operational amplifiers. The experimental results show that this technique is effective in improving the performance of the sensor signal processing device.

• International conference on construction engineering and project management
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• 2017.10a
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• pp.214-224
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• 2017

This paper focuses on bibliometrics analysis of personnel training in construction management specialty using visualization software CiteSpace from CNKI database. And points out the research situation and development trend of college personnel training on construction management in China. The results show : (1)the research of professional talents in colleges of construction management presents continued activity, and the source journals are widely. There are a lot of researchers pay attention to this issue, but collaborate little with each other; (2)Most of literature fasten on the practical talent training mode, practical teaching reform and course system reformation. Therefore, we should be further strengthened in academic cooperation, be further broadened research scope, be further enriched the insight of the research, and should follow with interest the issue on personnel training on construction management under the background of new engineering disciplines.

• Journal of Engineering Education Research
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• v.25 no.5
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• pp.33-43
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• 2022

This study started from a critical review of the current problem of ethics education in engineering colleges, how it has become stereotyped and perfunctory and hence, is failing to properly foster engineers with a sense of responsibility. Existing engineering ethics education occupies a very limited role and weight in the periphery of the engineering curriculum, unable to hold a central position. This situation is of grave concern, especially when the leadership of engineers with social and professional responsibility is of great importance. Therefore, this study explored new directions and strategies for engineering ethics education while reviewing domestic and foreign studies dealing with the current status and problems of engineering ethics education. First, this study discussed the need for and direction of shifting to ethical engineering education instead of ethics education centered on liberal arts courses. Second, this study presented specific practical strategies to construct the ethical engineering curriculum. For example, it is necessary to establish the ethical engineering curriculum with an education linking ethics with human development goals, ethics education using Korea's current issues and agendas, micro- and macro-level analysis related to engineering, and leadership education.

• Journal of Engineering Education Research
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• v.13 no.3
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• pp.53-60
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• 2010

This article explores how we pursue and operate the English medium instruction(EMI) in engineering colleges so as to educate global engineers. Engineering students in the 21st century society need to have fundamental work in languages, cultural differences, and strategies for working with diverse colleagues. EMI is not sufficient for preparing our engineering students to cope with the changed environments in our globalized society. Based on the case study, we emphasize that EMI needs to be located in the context of global engineering education which demands our understanding of different cultures and communication practices. We also suggest some programs how we develop our EMI circumstances.