• Journal of Korea Technical Association of The Pulp and Paper Industry
• /
• v.47 no.4
• /
• pp.60-65
• /
• 2015

In order to improve the strength of paper, mixing ratio of Sw-BKP and Hw-BKP and PVA (polyvinyl alcohol) fibers dosage were investigated. When the Sw-BKP fraction was increased, strength properties were increased because of average fibers length increased. When PVA fraction increased, paper strength was increased, but there was dissolution of PVA in water. The reason for improving handsheet strength that contained PVA was due to increased bonding action between the fibers by the PVA. The addition of PVA to kraft pulp would be helpful for packaging paper materials to increase strength and fracture toughness.

• Journal of Korea Technical Association of The Pulp and Paper Industry
• /
• v.33 no.1
• /
• pp.38-44
• /
• 2001

The effects of refining load on the paper properties were investigated. HwBKP, SwBKP and SwUKP were refined with PFI mill at the load of 3.33 N/mm and 6.00 N/mm. Higher Scott bond was obtained at the higher refining load for three pulp used in this study. However any changes in the light scattering coefficient with the change of refining load were not observed. Although the effect of refining load on the formation index for SwUKP was not observed, higher refining load gave the better formation for HwBKP and SwBKP. The fiber mass and fiber crowding factor were not affected by the refining load. Higher apparent density and tensile index were obtained with the higher refining load. However, the higher refining load did not improve the tensile index at the same apparent density. The tear index was decreased with the increase of refining load.

• Journal of Korea Technical Association of The Pulp and Paper Industry
• /
• v.38 no.4 s.117
• /
• pp.10-16
• /
• 2006

The study was carried out to investigate how the refining of pulps affects the stress-strain characteristics and physical properties of paper. SwBKP and HwBKP were refined with Hollender laboratory beater to obtain three levels of freeness(500, 400 and 300 ml CSF) at the different consistencies(0.5% and 1.0%). The effects of fines were also evaluated. The stresses and strains of papers made from SwBKP and HwBKP were increased with refining. The absolute value of strain in paper made from SwBKP was higher than those of paper made from HwBKP. We also found that the presence of fines increased the stress and strain significantly in both pulp types. The refining at lower pulp consistency gave higher stress and strain properties. Most physical properties of paper were improved with refining, but the effect of refining consistency depended on the characteristics of each physical properties.

• Venture DIGEST
• /
• s.109
• /
• pp.4-7
• /
• 2007

소프트웨어는 PC, 휴대폰 등 IT 산업은 물론 자동차, 의료, 국방, 건설 등 다양한 제조업에 접목되어 산업적 가치 혁신을 결정짓는 핵심기술로써 유비쿼터스 사회를 형성하는 핵심요소이자 고부가가치 창출 및 신경제를 주도하는 국가 기반 인프라로서의 역할이 나날이 증대되고 있다. 이러한 SW의 중요성 인식에 따라 미국, 일본, 중국 등 각국에서는 기존 제조업의 공동화와 생산성 하락 방지 등 산업 경쟁력 강화를 위해 SW에 대한 전략적 투자 확대를 실시하고 있으며, 우리나라의 경우도 예외는 아니다.

• Journal of Korean Society of Industrial and Systems Engineering
• /
• v.41 no.3
• /
• pp.83-89
• /
• 2018

In the SW industry, the diversification of global markets and technology trends are changing due to the emergence of new services, and IT companies are in need of strategic change different from the previous one. In this study, SWOT analysis was performed by extracting the internal environmental factors and external environmental factors through the previous studies to improve the project performance competence of small IT companies, and the SWOT Matrix was reconstructed through the pairwise comparison. Based on this, the purpose of this research was to propose the project performance competency improvement plans for small IT companies based on importance and priority, and the following four strategies were derived from the result of SWOT-AHP analysis. SO strategy was drawn in direction to invest R & D in new SW industry to enhance technology competitiveness of SMEs in order to develop SMEs, and in order to secure competitiveness of SW industry, WO strategy is drawn the cultivation of professional technical manpower through SW policy. ST Strategy presented technical management through SW system improvement policy to improve SW environment, and WT Strategy presented awareness training on the construction and necessity of project management system construction. Using the strategies presented in this study, it is expected that the managers of small IT firms will be presented as references to measure the performance competence factors of current organizations and company organizations.

• Journal of the Korean Society of Clothing and Textiles
• /
• v.37 no.2
• /
• pp.235-245
• /
• 2013

Physiological responses and subjective sensations were evaluated for wearing protective welding clothing in consideration of the work environment for the shipbuilding industry. Experimental clothing was made of oxidant carbon nonwoven fabric (SW2) and oxidant carbon/p-aramid blended fabric (SW4). The values of all items in physiological responses were higher upon wearing oxidant carbon experimental clothing versus wearing oxidant carbon/p-aramid experimental clothing (p<.001). The results of the wearing evaluation in the welding work on-site showed that existing leather protective clothing had a very low satisfaction of permeability, weight sensation and wearing sensation. For the wearing sensation of experimental clothing with SW2, permeability and durability were poor and the pressure and weight sensation satisfaction was very high. In case of SW4, the satisfaction was very high in functional movement, pressure, weight sensation and management aspects; subsequently, the overall wearing satisfaction was very good.

• International Commerce and Information Review
• /
• v.10 no.3
• /
• pp.437-458
• /
• 2008

In these days the global software market is experiencing diastrophism due to globalization, convergence, and the spread of web 2.0. In particular, today"s global economy has entered the so-called "Globalization 3.0" era, and the world is evolving into a flat world where labor, capital, and resources are moving freely. In this rapidly changing global economy, the growth of the Korean economy is in a state of continuous decline. Particularly software industry is also suffering continuously slow growth due to market saturation and low service earning, which require urgent countermeasures. Therefore, the purpose of this study is: 1) to analyze the current industrial condition of the software industry, which have special characteristics differ from manufacturing industry; and 2) to analyze the major obstacles of local companies working in the software industry in order to cope with the recent changes in the global market environment and 3) to draw out the strategy for the domestic software industry in gangwon province in order to promote local software industry and to achieve globalization.

• Journal of Korea Technical Association of The Pulp and Paper Industry
• /
• v.41 no.2
• /
• pp.7-12
• /
• 2009

The effects of refining either SwBKP or HwBKP, and both of SwBKP and HwBKP on the physical properties of paper were investigated in order to elucidate if the non-conventional refining and blending method can be used for the optimizing the paper properties. The blending ratio of SwBKP and HwBKP was 15:85. The highest bulk was obtained with the refining of SwBKP only. Any differences of opacity were not observed in unfilled paper, while the highest opacity of PCC filled paper was obtained at same bulk when the only HwBKP was refined. However burst index and tensile index did not showed any differences in the relationship with bulk. Therefore this result can be applied to improve the opacity of paper without sacrificing of strength properties.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2015.10a
• /
• pp.980-982
• /
• 2015

성공적인 시스템 개발을 위해서 SW의 품질을 향상시켜야 한다. 하지만 국내 SW 산업환경은 코드 중심 개발로써, 개발 문서 부재 및 SW개발과 문서화가 동시에 수행되지 않는다. 이러한 문제의 해결을 위해서 SW개발 시, 발생 문서는 코드와 문서의 동시 개발 및 시스템화가 필요하다. 본 논문은 체계적인 요구사항 관리를 위한 요구사항 추적 모델을 제안한다. 제안한 모델은 기존의 SW Visualization을 통한 역공학 기법에 적용하여 품질 개선 및 코드와 문서의 불일치 문제를 해결하고자 한다.

• Food Science of Animal Resources
• /
• v.30 no.2
• /
• pp.206-215
• /
• 2010

A total of 582 gilts and barrows were analyzed to investigate the regressive relationships to slaughter weight (SW) of variables related to production efficiency and pork quality. Average initial weights and SW were 88.6 and 122.5 kg, respectively, for gilts and 88.7 and 121.4 kg, respectively, for barrows. Average daily gain and gain:feed ratio were not affected by SW. Backfat thickness, which was significantly greater (p<0.01) in barrows (23.3 mm) than in gilts (20.7 mm), increased with increasing SW (0.21 mm/kg; p<0.001). When the 4-notch carcass yield and quality grades were quantified according to an arbitrary 1 point-per-1 notch scale, the former, but not the latter, regressed on SW (-0.64/10 kg; p<0.01). The percent yield of the belly per total lean (overall mean=20.7%) increased with increasing SW (0.37%/10 kg; p<0.001), whereas in other cuts, the SW effect was negligible. The redness of the loin also increased with increasing SW (p<0.05), but other physicochemical characteristics were minimally influenced by SW. In sensory evaluation, effects of SW for fresh and cooked loin, ham, and belly were mostly considered insignificant in terms of quality, albeit statistically significant in several cases. However, positive regressions on SW (p<0.01) of the marbling and acceptability scores of fresh loin as well as the fat:lean ratio of fresh belly were noteworthy. Collectively, SW of approximately 125 kg was maximal for both sexes under the current carcass yield grading, in which 94 kg is the upper weight limit for grade A carcass. However, if the carcass weight limit of the grading was to be removed or broadened, the SW for gilts (but not that for barrows because of their excessive fat content at above 125-kg SW) could be increased to 135 kg or greater without compromising carcass quality.