• Educational Technology International
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• v.19 no.1
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• pp.153-173
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• 2018

The purpose of this study was to investigate teaching competence of faculty members based on TPACK which should be examined to ensure high quality in higher education. This study was conducted with a focus on TPACK, which integrate technology knowledge (TK), content knowledge (CK), and pedagogy knowledge (PK). Except insincere responses data from a total of 85 participants were used for data analysis in this study. K-mean cluster analysis method was used to examine how faculty members could be distinguished depending on TPACK type. Study results showed that there were three different types of faculty groups (well-balanced competence type, development required competence type, and lack of technology competence type). First, faculty members defined as well balanced competence type were more than the average level in TPACK. Second, faculty members belonged to development required competence type reported below the average level in TPACK. Thus, faculty members in this type were required to increase teaching competence. Finally, faculty members in lack of technology competence type were needed to enhance competence related to technology because their overall TK level was relatively low. This study examined what distinctive characteristics exited in each type depending on gender, teaching career, nationality, and age. Results from this study offered a basis for better understanding TPACK for enhancing teaching competence at the university level.

• Journal of Forest and Environmental Science
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• v.17 no.1
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• pp.47-61
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• 2001

The study was carried out to suggest the development scheme of Forestry Association by the method of member's consciousness inclination analysis. The results are as follows ; 1. Most of Association members perceived the necessity for re-education about cooperative association, especially the research suitable to the characteristics of Korea Forestry. 2. 59.9% of members had negative response against revision of Forestry Association Law, and 39.5% of members had negative opinion about taking exclusive charge of forest working by Forestry Association, noting the need of immediate publicity activities for those charges. 3. Large number of members pointed out that the most serious problems for the management of private forest were the budgetary deficit and the lack of joint marketing system of forest products. 25.9% of members had complaints about the management of their own forests after joining the association. 4. 34.0% of members opposed Proxy Management and 48.8% of members wanted Portion Consignment System. 5. The analysis noted that due to increase of the aged in rural communities, it is necessary to establish Forestry Working Corps, which is under the control of the Government and Forestry Association to supply forestry labor in a appropriate time. 6. Most of Association members liked establishment of Special Association for each forest products.

• Journal of Korean Society of Steel Construction
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• v.23 no.6
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• pp.647-657
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• 2011

This paper describes the moment capacity of flexural members with local buckling based on a series of FE and experiment results. Thin-walled flexural members undergo local, lateral-torsional, or interactive buckling according to the section geometries and lateral boundary conditions. Flexural members with large width-to-thickness ratios in the flanges or the web may undergo local buckling before lateral-torsional buckling. Local buckling has a negative effect on the flexural strength based on the lateral-torsional buckling of flexural members. This phenomenon should be considered in the estimation of the flexural strength of thin-walled sections. Flexural members with various width-to-thickness ratios in their flanges and web were analyzed. Initial imperfections in the local buckling mode, and residual stresses, were included in the FE analyses. Simple bending moment formulae for flexural members were proposed based on the FE and test results to account for local and lateral-torsional buckling. The proposed bending moment formulae for the thin-walled flexural members in the Direct Strength Method use the empirical strength formula and the grosssection modulus. The ultimate flexural strengths predicted by the proposed moment formulae were compared with the AISC (2005), Eurocode3 (2003), and Korean Highway Bridge Design Specifications (2010). The comparison showed that the proposed bending moment formulae can reasonably predict the ultimate moment capacity of thin-walled flexural members.

• Journal of The Korean Association For Science Education
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• v.35 no.2
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• pp.333-342
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• 2015

This study analyzes the verbal interaction patterns used in a social network activity analysis that appeared in a science inquiry activity of 31 small groups of science-gifted students consisting of 5 members each. The results of this study are as follows: The interaction patterns showed eight types. The most prevalent interaction pattern, type 1, is triangle-shaped, interacting with 3 members out of 5 without a central member. Type 2 is wye form, interacting with 4 members and with one alienated member. Type 3 is diamond-shaped, interacting with 4 members. Type 4 is ray form, interacting with 5 around a central member. Type 5 has an alienated member and interacts with 4 members around the central member. Type 6 is triangle-branched, 4 members linked to the central member. Type 7 is wye form linked all around the central member. Type 8 is wye form with a more complex link than type 7. These can be classified in two. One is the participation-type where the rest of the 4 members are linked to the central member. The other is the alienation-type where a member/members is/are alienated without a central member. The participation-type appeared in 9 groups (29%), type 4, type 6, type 7, and type 8. The alienation-type showed in 22 groups (71%), type 1, type 2, type 3, and type 5. On the basis of this study, we propose that the best number of members in a group is three. It helps prevent a free-riding effect or isolation of members. Also, we deem it more fruitful if there is a member playing a central role in a group.

• Journal of the Korean Society of Clothing and Textiles
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• v.18 no.1
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• pp.31-42
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• 1994

The purpose of this study was to investigate the effect of feeling distance of clothes in the person perception. The specific objectives were: 1) to investigate whether the compositions of clothes affect the rate of detouring, ; 2 ) to investigate whether the gender compositions of dyads affect the rate of detouring, ; 3) to investigate whether the distance between members of dyads affect the rate of detouring. ; 3) to investigate whether the distance between members of dyads affect the rate of detouring. ; 4) to investigate the .effect of the interaction among the compsitions of clothes, the gender compositions, and the distance between members of dyads in the person perception. For this study, two male and two female undergraduates were selected and wore business suit or casual wear as given by the researcher. The distance between members of dyads ranged from 100cm to 170cm with an increment unit of loom. The data from our observation were analysed by x2-test, ANOVA, and MCA. The major findings were ; 1) In male/male dyad, distance perception from clothes were affected by the compositions of clothes at all distance. In maleffemale dyad, when the distance between members of dyad is short, distance perception from clothes were affected by the compositions of clothes modes, 2) When two members of dyad wear business suit, distance perception from clothes were affected by the gender composions of dyads. 3) Distance perception from clothes were affected by distance factors at all the gender compositions of dyads. 4) In the person perception, the most imprtant clue was the distance between members of dyads. The pllysical distance, which was formed by clothes, was between 130cm and 140cm.

• Journal of Service Research and Studies
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• v.6 no.2
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• pp.153-174
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• 2016

This empirical study attempted to investigate the effects of the CEO's transformational leadership on the organizational members' innovative behavior/organizational citizenship behavior, CSR and employees' acceptance of organizational change in the ICT industry. For this study, we conducted an online survey with the employees of businesses that belonged to the ICT industries and received 417 valid responses. The analysis results by SPSS & AMOS are as follows. CEO's transformational leadership had a significantly positive impact on the members' self-efficacy. The members' self-efficacy not only had a positive impact on their own innovative behavior/organizational citizenship behavior, but also had a mediating effects in the relationship between CEO's transformational leadership and the members's innovative behavior/organizational citizenship behavior. Also corporate social responsibility management had a moderating roles in the relationship between CEO's transformational leadership and the members' self-efficacy.

• Journal of the Korean Society of Manufacturing Technology Engineers
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• v.22 no.6
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• pp.976-981
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• 2013

This aims to examine experimentally the absorption behavior and strength of circular CFRP members with different stacking configurations on exposure to a separate impact velocity. In addition, considered the dynamic characteristics. Circular and square CFRP members were prepared from 8-ply unidirectional prepreg sheets stacked at different angles ($0^{\circ}/90^{\circ}$ and $90^{\circ}/0^{\circ}$, where the $0^{\circ}$ direction coincides with the axis of the member) and interface numbers (2, 4, and 6). Based on the collapse characteristics of the circular CFRP members. In this study, for the circular members, the impact energies at crosshead speeds of 5.52 m/s, 5.14 m/s, and 4.57 m/s are 611.52 J, 529.2 J, and 419.44 J (at circular members), respectively. Likewise, for the square members, the impact energies at crosshead speeds of 2.16 m/s, 1.85 m/s, and 1.67 m/s are 372.4 J, 274.4 J, and 223.44 J (at square members).

• Journal of the Korean housing association
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• v.17 no.3
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• pp.61-69
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• 2006

Vertical vibrations on the slab of buildings are affected by types of vibration sources, transfer paths, and the material property and the size of members. Among these parameters, the vibration sources and the transfer path can not be controlled, but the property and the size of members can be controlled in the phase of design the members. In this study, the vibration responses according to the property and size of members were obtained by using a prediction program based on dynamic-stiffness matrix. Three parameters which are not usually considered as major factors for architecral planning were selected fur these analyses. They are the strength of materials, the thickness of wall and the thickness of slab. The ground vibration source located near a building was used as vibration input data in the analyses. This study has its originality on presenting appropriate property and size of structural members in order to reduce vertical vibration of slab in shear-wall structures. Analysing the results from the vibration estimation program according to the variations of parameters, the appropriate ratio among the sizes of structural members were proposed. From these results, the vibration level on the slab which is not constructed yet would be predicted and the vibration peak level can be reduced or shifted into the desirable frequency range. Therefore, the vertical vibration could be controlled in the phase of designing buildings.

• Journal of Korean Association for Spatial Structures
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• v.6 no.2 s.20
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• pp.53-60
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• 2006

The shear failure modes of reinforced concrete members using high-strength materials (high-strength concrete and high-strength steel) are different to those of reinforced concrete members using normal-strength materials. The reinforced concrete members using high-strength materials are inclined to fail due to concrete crushing before the shear reinforcing bar reaches its yield strength. This paper presents an evaluation equation to calculate the maximum shear reinforcement ratio based on the material stresses and strains when the reinforced concrete members fail in shear. The maximum shear reinforcement ratio calculated by the proposed equation increases as the compressive strength of concrete increases. Test results of 97 reinforced concrete members reported in the technical literatures are used to check the validity of the proposed equation. The comparison between the test results and the ratio calculated using the proposed equation indicated that the shear failure modes depended on the interaction between the amount of shear reinforcement and the compressive strength of concrete.

• Composites Research
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• v.29 no.6
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• pp.328-335
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• 2016

The purpose of this study is to develop fiber reinforced cement matrix composite (ECC) produced with limestone powder in order to achieve high ductility of the composite, and to evaluate flexural performance of structural members made with ECC. Four kinds of mixture proportions were determined on the basis of the micromechanics and a steady state cracking theory considering the matrix fracture toughness and fiber-matrix interfacial characteristics. The mechanical properties of ECC, represented by strain-hardening behavior in uniaxial tension, were investigated. Also, strength property of the composite was experimentally evaluated. Two structural members made with ECC were produced and tested. Test results were compared with those of conventional concrete structural members. Increased limestone powder contents of ECC provides higher ductility of the composites while generally resulting in a lower strength property. ECC structural members exhibited higher flexural ductility, higher flexural load-carrying capacity and tighter crack width compared to conventional structural members.