Global strategists emphasize leveraging capabilities developed in domestic markets when expanding into international markets, a strategy reflected in the entry of Korean startups into the Chinese market. Value appropriation refers to a company's ability to claim its share of the value created in a target market, with value appropriation factors being critical elements required for this process. Despite these strategies, many foreign companies fail to achieve expected performance in China, often attributed to their inability to secure the necessary value appropriation factors. Researchers posit that business guanxi can play a pivotal role in facilitating the acquisition of these factors in the Chinese market. This study examines the relationship between the network capabilities of global startups and value appropriation factors during the overseas expansion stage. It also explores the moderating effect of business guanxi through empirical research. The data was collected via surveys from Korean global startups targeting business operations in China. The results indicate that sub-components of network capability, specifically networking capability and international market resource securing capability, are significantly associated with the acquisition of value appropriation factors. Furthermore, business guanxi was found to positively moderate the relationship between networking capability and securing value appropriation factors. These findings suggest that Korean global startups should prioritize developing strong network capabilities and fostering business guanxi to enhance their ability to secure value appropriation factors during the overseas expansion stage. Chinese companies do not have deep trust in Korean startups. Therefore, startups should build a business guanxi based on emotional trust from the beginning of early entry. This effort will extend beyond the trust of startup products and services to corporate trust.

본 연구는 유아교사의 디지털 교수효능감과 디지털 놀이지원역량의 관 계에서 변화개방성과 전문성 지원환경의 매개효과를 분석하는데 목적이 있다. 이를 위해 D시와 S시의 유치원과 어린이집에 재직중인 유아교사 165명을 대상으로 자료를 분석하였다. 병렬다중매개모형을 분석하기 위 해 Hayes(2018)의 PROCESS Macro Model 4가 적용되었다. 분석 결 과, 유아교사의 디지털 교수효능감, 변화개방성, 전문성 지원환경, 디지 털 놀이지원역량은 통계적으로 유의한 정적 상관관계를 나타냈다. 또한 유아교사의 전문성 지원환경이 디지털 교수효능감과 디지털 놀이지원역 량 간의 관계에서 유의미한 매개효과를 나타냈다. 본 연구결과는 유아교 사의 디지털 놀이지원역량 향상을 위하여 디지털 교수효능감과 전문성 지원환경을 중요 변인으로 고려되어야 함을 시사한다. 본 연구결과는 유 아교사의 디지털 놀이지원역량 증진을 위한 실질적이고 유용한 기초자료 를 제공하는 데 의의가 있다.

Na4MnV(PO4)3 (NMVP) cathode materials have attracted significant attention as potential candidates for grid applications due to their distinctive structure and high theoretical capacity. However, their inadequate electronic conductivity compromises both cycling stability and rate capability, presenting a challenge for practical implementation. To address this issue, we employed a strategy involving Zr4+ doping and dual-carbon coating to enhance the electrochemical performance of NMVP. The resulting Na3.8MnV0.8Zr0.2( PO4)3/C/rGO composite demonstrated markedly improved rate capability (71.9 mAh g− 1 at 60 °C) and sustained cyclic stability (84.8% retention at 2 C after 1000 cycles), as validated through comprehensive kinetics assessments. The enhanced performance can be attributed to the expanded Na-ion pathways facilitated by large size ion doping and the improved electronic conductivity enabled by the dual-layer coating.

The present study investigates the impact of freeze–thaw deterioration on the electrical properties and electric-heating capabilities of cement mortar incorporating with carbon nanotubes (CNT) and carbon fibers (CF). Mortar samples, containing 0.5 wt.% CNT and 0.1 wt.% CF relative to the mass of cement, were prepared and subjected to freeze–thaw tests for up to 300 cycles. The electrical properties and electric-heating capability were evaluated every 30 freeze–thaw cycles, and the physicochemical characteristics of the samples were analyzed using X-ray diffraction and mercury intrusion porosimetry. The results indicate a decline in both electrical conductivity and heat-generation capability as the freeze–thaw cycles progress. Furthermore, changes in the pore structure of the mortar samples during the freeze–thaw cycles contributed to damage in the conductive network formed by CNT and CF, resulting in decreased electrical conductivity and heat-generation capabilities of the mortar samples.

The spent nuclear fuel, combusted and released in the nuclear power plant, is stored in the spent fuel pool (SFP) located in the fuel buildings interconnected with the reactors. In Korea, spent fuel has been stored exclusively in SFPs, prompting initiatives to expand storage capacity by either installing additional SFPs or replacing them with high-density spent fuel storage racks. The installation of these fuel racks necessitates obtaining a regulatory license contingent upon ensuring safe fuel handling and storage systems. Regulatory agencies mandate the formulation of various postulated accident scenarios and assessments covering criticality, shielding, thermal behavior, and structural integrity to ensure safe fuel handling and storage systems. This study describes an evaluation method for assessing the structural damage to storage racks resulting from fuel dropping as a part of the functional safety evaluation of these racks. A scenario was envisaged wherein fuel was dropped onto the base plates of the upper and lower sections of the storage racks, and the impact load was analyzed using the ABAQUS/Explicit program. The evaluation results revealed localized plastic deformation but affirmed the structural integrity and safety of the storage racks.

Maintaining sea superiority through successful mission accomplishments of warships is being proved to be an important factor of winning a war, as in the Ukraine-Russia war. in order to ensure the ability of a warship to perform its duties, the survivability of the warship must be strengthened. In particular, among the survivability factors, vulnerability is closely related to a damage assessment, and these vulnerability data are used as basic data to measure the mission capability. The warship's mission capability is usually measured using a wargame model, but only the operational effects of a macroscopic view are measured with a theater level resolution. In order to analyze the effectiveness and efficiency of a weapon system in the context of advanced weapon systems and equipments, a warship's mission capability must be measured at the engagement level resolution. To this end, not the relationship between the displacement tonnage and the weight of warheads applied in the theater level model, but an engagement level resolution vulnerability assessment method that can specify physical and functional damage at the hit position should be applied. This study proposes a method of measuring a warship’s mission capability by applying the warship vulnerability assessment method to the naval engagement level analysis model. The result can be used as basic data in developing engagement algorithms for effective and efficient operation tactics to be implemented from a single unit weapon system to multiple warships.

The Korea Atomic Energy Research Institute (KAERI) is currently developing a process-based performance assessment model known as APro. Distinguished from the previous system-level safety assessment model developed by KAERI, APro exhibits the capacity to encompass a threedimensional biosphere domain, evolving over the long term. In this study, we elucidate the methodology employed in developing the dose assessment module of APro and present the module’s functionalities. The procedural steps underlying radiation dose calculations within the APro framework can be succinctly outlined as follows: 1) Definition of a landscape model, utilizing information derived from a specified snapshot period provided by the APro biosphere transport module; 2) Generation of unit biotope objects spanning the landscape; 3) Evaluation of radionuclide transfer within the soil medium; 4) Calculation of activity concentration for flora and fauna groups; 5) Assessment of the distribution of effective dose among representative human groups; 6) Progressing through successive time steps. The APro dose calculation module exhibits notable capabilities that encompass: 1) Accounting for radionuclide decay and ingrowth; 2) Facilitating transfer through unsaturated porous media; 3) Considering sorption effects; 4) Addressing the inheritance of radioactivity between various landscape models; 5) Offering customizable ecosystem parameters; 6) Providing flexibility for user-defined exposure pathways. Leveraging these functionalities of the dose assessment module, APro is proficient in evaluating the distribution of radiological doses and associated risks for representative population groups, all while accounting for the dynamic, long-term evolution of the biosphere, including alterations in land cover.

Recently, attention has increasingly been paid to the heterogeneity of firm performance. Some firms seem to extensively outperform their rivals not only in terms of productivity but also regarding sales, returns on investment, etc. Importantly, the chasm between the superstar firms, most successful group of firms in an industry, and their peers has been widening especially in the 21st century (Van Reenen, 2018).Superstar firms’ impacts on economies have gained a great deal of attention in the economics and policy literature. Understanding what helps firms become superstars can guide policy and management but requires further research and input from the management literature. This paper brings the topic of superstar firms to the management literature, develops a theory, and offers an empirical view of the drivers of superstar firms.

A secure digital platform (SDP) can provide B2B marketers with confidence to use communications technology (CT) and engage in information sharing that facilitates resource utilization. Interlinked digital platforms constitute the company’s ecosystem and barriers in the form of a lack of skills and knowledge in relation to governance and compliance can be overcome through organizational intervention that is external to an individual’s capability of control. A framework for an SDP was developed by utilizing network theory and data were collected via an online survey and analysed (n=207) using SEM, AMOS. Organizational intervention through an SDP can help B2B marketers to increase the organization’s resource capability through improved interaction. It can also help individuals to become pro-actively compliant and be less at risk from various threats (e.g., fake news) as the organization provides a safer digital environment.

본 연구는 미중 경쟁이 심화되고 있는 오늘날, 동남아시아를 포괄한 동아시아 지역에 있어 일본의 원조 이념 변화가 미친 정책적 영향이 무엇이고 어떠한 함의를 가지고 있는가에 대한 질문에서 출발했다. 이 에 대한 연구의 주요 결론은 다음과 같다. 2000년대 이후 일본은 '원 조 이념의 변화'를 추진했고 이를 통해 기존의 '비군사화 규범' 중심의 원조 이념에서 벗어나 안전보장 규범을 적극적으로 수용했으며, 특히 해상법집행에 중점을 두고 동남아시아 국가의 해양능력구축을 지원하 고 있다. 이제까지 방산수출을 통한 접근은 전무하다고 보아도 좋을 정 도로 제한적이었으나, 원조 이념의 변화와 함께 방위장비 해외이전이 자유로워지고 '원조화'하면서 장기적으로는 변화의 가능성이 보이고 있 다. 한국은 일본의 사례를 참고하면서, 동남아시아 역내 국가들의 수요 와 우려가 무엇인지를 상대국 입장에서 파악하는 해양능력구축 지원을 추진할 필요가 있다.

Forest fires in Korea usually start in the fall and occur every year until spring. Most wildfires are human resources that combine topographical characteristics and carelessness, and failure to respond in the initial stage and lack of cleanup are spreading to large-scale wildfires. In order to prevent these wildfires, active cooperation from the public is essential. As can be seen from recent wildfires, the attention of the public is needed above all else because large-scale wildfires in Korea are occurring due to the people's negligence. If a wildfire spreads and becomes large, it causes damage to life and property, and the damage is irreversible. In this study, various methods were used to prevent forest fires and improve initial suppression ability. In order to minimize damage, the model analyzed by the 119 Special Rescue Team in Gangwon, Chungcheong and nearby forest fires was analyzed on the combustion progress and wind direction by time period. The propagation speed by the wind direction was simulated. Until now, most of the wildfires have been extinguished by firefighting, but I hope that the Forest Service will take the lead and maintain coordination with related organizations.

This study investigated the impact of the latest developments in big data analytics capabilities (BDAC) on firm performance. The BDAC have the power to innovate existing management practices. Nevertheless, their impact on firm performance has not been fully is not yet fully elucidated. The BDAC relates to the flexibility of infrastructure as well as the skills of management and firm's personnel. Most studies have explored the phenomena from a theoretical perspective or based on factors such as organizational characteristics. However, this study extends the flow of previous research by proposing and testing a model which examines whether organizational exploration, exploitation and market agility mediate the relationship between the BDAC and firm performance. The proposed model was tested using survey data collected from the long-term employees over 10 years in 250 companies. The results analyzed through structural equation modeling show that a strong BDAC can help improve firm performance. An organization's ability to analyze big data affects its exploration and exploitation thereby affecting market agility, and, consequently, firm performance. These results also confirm the powerful mediating role of exploration, exploitation, and market agility in improving insights into big data utilization and improving firm performance.