• The Journal of the Convergence on Culture Technology
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• v.10 no.2
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• pp.225-236
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• 2024

This study was conducted to identify research trends on the integrated community care system in Korea and suggest future research directions. The scoping review method was conducted according to the JBI methodological guidelines. A literature search was conducted in 5 databases (RISS, DBpia, NDSL, KISS, NAL), and 34 papers were selected for the final analysis. The analysis was categorized into user and provider aspects related to community care, and the results from the user aspect showed that variables related to service satisfaction and physical health status were used the most and showed positive results. Provider aspect results mainly studied problems and improvements due to service provision, and many studies showed the need to revitalize inter-agency collaboration systems and the lack of manpower to perform services. Based on the results of this study, in the future expansion of the integrated community care system, it will be necessary to not only establish criteria for selecting subjects, but also secure the expertise of service providers, establish a collaboration system between regions and institutions, and prepare measures to resolve service differences.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.37 no.4
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• pp.445-450
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• 2024

The expansion of lithium-ion battery usage beyond portable electronic devices to electric vehicles and energy storage systems is driven by their high energy density and favorable cycle characteristics. Enhancing the stability and performance of these batteries involves exploring solid electrolytes as alternatives to liquid ones. While sulfide-based solid electrolytes have received significant attention for commercialization, research on amorphous-phase glass solid electrolytes in oxide-based systems remains limited. Here, we investigate the glass transition temperatures and sintering behaviors by changing the molecular ratio of Li₂O/B₂O₃ in borate glass comprising Li₂O-B₂O₃-Al₂O₃ system. The glass transition temperature is decreasing as increasing the amount of Li₂O. When we sintered at 450℃, just above the glass transition temperature, the samples did not consolidate well, while the proper sintered samples could be obtained under the higher temperature. We successfully obtained the borate glass ceramics phases by melt-quenching method, and the sintering characteristics are investigated. Future studies could explore optimizing ion conductivity through refining processing conditions, adjusting the glass former-to-modifier ratio, and incorporating additional Li salt to enhance the ionic conductivity.

• Clean Technology
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• v.30 no.1
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• pp.23-27
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• 2024

Bismuth is a promising anodic for Li-ion batteries (LIBs) due to its adequate operating voltage and high-volume capacity (3,765 mAh cm^-3). Nevertheless, inevitable volume expansion during Bi alloy reactions leads to severe capacity loss and cell destruction. To address this, a complex of bismuth alloy nanoparticles (Bi@NC) embedded in an N doping-carbon coating is fabricated via a simple pyrolysis method. Nano-sized bismuth alloys can improve the reaction dynamics through a shortened Li⁺-ion diffusion path. In addition, the N-doped carbon coating effectively buffers the volume change of bismuth during the extended alloy/dealloy reaction with Li⁺ ions and maintains an effective conductive network. Based on the Thermogravimetric analysis (TGA) showed high bismuth alloy loading (80.9 wt%) and maintained a high gravimetric capacity of 315 mAh g^-1 up to 100 cycles with high volumetric capacity of 845.6 mAh cm^-3.

• Journal of Fashion Business
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• v.28 no.2
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• pp.92-108
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• 2024

This study examines the measures and implementation strategies needed to develop sustainable design from an international perspective, using examples of sustainability practices and product planning from Helen Kaminski, a representative fashion brand of positive luxury. The research method includes a literature study on positive luxury, a case study on positive luxury brands, and an empirical study where the researcher participated in the development of Helen Kaminski's design. The study identifies the following measures needed to develop designs for sustainable products: First, the development of designs that increase circularity; Second, the use of certified materials and strict adherence to material usage; Third, the simplification of production methods or development of new technologies for this purpose; Fourth, ensuring that design development incorporate the traditions and unique handicraft techniques of the local community. The implementation strategies required for a sustainable product planning process are as follows. First, changes in the product planning stage and expansion of participating members are needed. Second, securing and conducting prior inspections of the supply chain for ethical sourcing is required. Third, prioritizing the use of eco-friendly materials and material development. Fourth, establishing a stage for selecting and evaluating objects that will become representative designs with sustainability. As a result, this study can serve as basic data to strengthen corporate competitiveness and establish itself as a fashion brand for sustainability through actionable strategies applicable to the domestic fashion industry in the future.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.34 no.2
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• pp.139-147
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• 2024

Objective: The introduction of government support programs for small businesses in 1993 aimed to enhance awareness and capabilities in industrial health management among small business proprietors, marking a continuous expansion over the past three decades. Despite this growth, there has been a conspicuous absence of comprehensive evaluations regarding the efficacy of these initiatives. In response, this study endeavors to conduct a thorough policy evaluation. Method: Through a meticulous approach, we conducted an analysis of in-depth interviews with eight individuals possessing expertise in the administration of government support programs for small businesses. These interviews were sourced from personnel affiliated with government ministries and public agencies. Results: In the analysis, it was found that small-scale business government support programs operate primarily based on quantity rather than receiving support from business owners regarding their necessity or utility. Consequently, these programs have failed to yield substantial effects on altering the perception of business owners or improving the working environment within the businesses. Conclusion: This study assumes significance in its capacity to discern intricate procedural challenges in program implementation, which often elude quantitative scrutiny. Furthermore, it provides pivotal insights for enhancing government support programs.

• Journal of the Korea institute for structural maintenance and inspection
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• v.12 no.6
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• pp.109-118
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• 2008

Carbon fiber reinforced polymer(CFRP) can be bonded to the soffit of a concrete beam as a means of repairing and strengthening the beam. In such beams, materials, concrete and carbon fiber sheets, are different in coefficient of thermal expansion. Consequently, interfacial shear stresses can be increased and debonding failure may occur at the plate ends due to temperature rising. This paper presents a method of approximate closed-form solutions for the interfacial shear stresses and conducts a beam test to compare the numerical results. In case of temperature rising over $30^{\circ}C$, interfacial stress of 0.91MPa is occurred at the end of sheet. Therefore, using carbon fiber sheet for strengthening the concrete beam, it is necessary to consider the thermal effects and to evaluate the long time behavior of the concrete beam by temperature change.

• Journal of The Korean Institute of Defense Technology
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• v.5 no.2
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• pp.10-16
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• 2023

This study establishes the operation concept of the 4th industrial revolution defense technology and communication facility-based 5G MUM-T system, and diagnoses our current situation, focusing on the case of US government technology policy, which is a leading country in 5G MUM-T system and operation. And to advance the operation of the 5G MUM-T system, reflect combat robots and drones in the detailed classification of weapon systems, early introduction of low-orbit 5G satellite communication, expansion of the use of 5G specialized networks and wholesale provision for demonstration and verification, establishment of a defense AI governance system, Suggests the necessity of a 3-class method for radiological weapon systems. For future research, it is important to respond to the technological evolution of 6G MUM-T and 6G NTN and compare and analyze each country's policy cases, such as China, Germany, the United Kingdom, and Japan.

• Journal of the Institute of Convergence Signal Processing
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• v.24 no.4
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• pp.249-254
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• 2023

Recently, the distribution of drones is being activated by saving farmers' working time and protecting them from harmful human bodies from pesticides due to the mission of spraying pesticides using drones. It is possible to compensate for various shortcomings derived from the existing pesticide spraying method, wide-area control and helicopter control. Recently, the smart farm expansion policy has actively used it to generate profits for farmers by increasing harvests by monitoring growth information of various crops based on IoT in real time and collecting big data on key variables, and related drone industry technologies are also being developed. In this study, drones were applied to the work of shading greenhouses to secure diversity in agricultural application fields, and basic research on the greenhouse environment was conducted to materialize the technology related to shading. In order to provide high-quality light in consideration of the internal and external environment of the green house, basic research was conducted to enable light-shielding missions using drones through nozzle design for uniform spraying of nozzles of drones, light-transmitting rate analysis of green houses, and light-shielding agent application experiments.

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.60 no.3
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• pp.244-257
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• 2024

Considering the negative impact of IUU fishing on fishery resources and fishery management, a revised approach for estimating risks of the ecosystem-based fisheries assessment (EBFA) of Zhang et al. (2011) was developed that incorporates three components of the IUU (illegal, unreported and unregulated) fishing as penalties. In this study, we introduced ways to develop indicators of IUU fishing suitable for the Korean fishery and apply them to ecosystem-based resource assessment. The indicator for the illegal fishing component was set as the fishing without licenses or permits, and that for the unreported fishing component was set as unreported fishing activities. Indicators for the unregulated fishing component were set as fishing operated by illegal fishing gear, illegal fish capture, fishing operations in prohibited fishing area, and fishing with restrict permits. IUU fishing significantly impacts the stock of target species. Therefore, in this study, the influence of IUU fishing is included in the Species Risk Index (SRI) at the species level, and weights are assigned based on the ratio of the stock, as $SRI={{\sum\limits_j}{\lambda}_j{\cdot}ORI/{\sum\limits_j}{\lambda}_j}+P_f(B_i/B)$. The revised ecosystem-based fisheries assessment method, which considers the impact of IUU fishing, was applied to major fisheries on the south coast of Korea. It is necessary to reduce the non-reporting rate through the expansion of the TAC system and improve the accuracy of statistical compilation. To this end, the electronic fishing reporting system, which is being implemented on all vessels in Korean distant water fishing vessels, should be introduced to the coastal and offshore fisheries as well.

• Journal of Wellbeing Management and Applied Psychology
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• v.7 no.4
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• pp.29-37
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• 2024

Purpose: This study aims to understand the types and amounts of greenhouse gases among substances generated when operating facilities at resource recovery facilities in Seoul and analyze their impact on the environment. Research design, data and methodology: As a research method, you can directly visit four resource recovery facilities in Seoul, investigate greenhouse gases generated when operating the facilities, and then understand the distribution of generation through the greenhouse gas calculation formula. In addition, the impact, distribution, etc. that they have regionally can be confirmed by comparing the emission source and the surrounding site boundary line through the environmental impact survey report Results: When operating resource recovery facilities, you can determine whether there is a possibility that they will actually affect the surrounding areas, especially in areas where humans reside, such as private homes and vulnerable facilities, and if so, the results can be determined. The goal of this study is to understand how much the effects of greenhouse gases contribute to climate change and what the effects are on the human body. Conclusions: he results of this study can identify the causes of negative images of the survival of resource recovery facilities and the expansion and establishment of new resource recovery facilities, and suggest eco-friendly measures such as waste export, recycling, and recycling instead of new construction on the impact on climate change.