• 아태비즈니스연구
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• 제13권3호
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• pp.73-92
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• 2022

Purpose - The purpose of this paper is to explore the relationship between corporate social responsibility (CSR) and corporate present and future value. Design/methodology/approach - This paper intends to prove the relationship between CSR and corporate value once again by selecting A-share companies listed on the China Shenzhen Stock Exchange and Shanghai Stock Exchange from 2010 2017. This paper also examines the effect of five dimensions of CSR on corporate value in China. Findings - Empirical evidence shows that CSR is conducive to corporate value. The fulfillment of social responsibilities improves firm value in the future. Further, the regression results show that the social responsibility of the non-state-owned enterprise (Non-SOEs) group has a more significant effect on corporate financial performance than on the state-owned enterprise (SOEs) group. Research implications or Originality - This study has limitations. First, the grouping is only divided into two groups of SOEs and non-SOEs, and we did not consider foreign investments, that is, foreign-funded enterprises, for the comparative analysis. Second, only the linear relationship between CSR and corporate value was tested. In the future, we must determine whether there exists a nonlinear relationship between the two key concepts. Finally, there exists no research on CSR and corporate value by specific industries. Thus, the relationship between the five dimensions of CSR and corporate value should be investigated by specific industries.

• Communications for Statistical Applications and Methods
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• 제31권2호
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• pp.213-234
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• 2024

In recent decades, increasing research attention has been directed toward predicting the price of stocks in financial markets using deep learning methods. For instance, recurrent neural network (RNN) is known to be competitive for datasets with time-series data. Long short term memory (LSTM) further improves RNN by providing an alternative approach to the gradient loss problem. LSTM has its own advantage in predictive accuracy by retaining memory for a longer time. In this paper, we combine both supervised and unsupervised dimension reduction methods with LSTM to enhance the forecasting performance and refer to this as a dimension reduction based LSTM (DR-LSTM) approach. For a supervised dimension reduction method, we use methods such as sliced inverse regression (SIR), sparse SIR, and kernel SIR. Furthermore, principal component analysis (PCA), sparse PCA, and kernel PCA are used as unsupervised dimension reduction methods. Using datasets of real stock market index (S&P 500, STOXX Europe 600, and KOSPI), we present a comparative study on predictive accuracy between six DR-LSTM methods and time series modeling.

• 한국정보시스템학회지:정보시스템연구
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• 제17권4호
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• pp.157-180
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• 2008

The majority of studies was undertaken on large companies that had adopted e-Business or on the specific case of dot.com companies. However, despite this interest in the effect of the size of an organization on its approach to e-Business, little direct comparison has been undertaken between small and large companies. This study examined the differences of e-Business adoption factors and e-Business performance between large and small companies. Reviewing the literature, we suggest a research model and develop nine hypotheses to be tested. Data are collected from 109 companies Implemented e-business. The results of hypothesis testing show as follows. First, e-Business performance of efficiency has a positive influence of perceived e-Business advantage, top management support, organizational learning ability and financial slack. Second, e-Business performance of sales performance has a positive influence of top management support. Third, e-Business performance of customer satisfaction has a positive influence of technology competence, perceived e-Business advantage, top management support, financial slack and institutional pressure. Finally, there are differences in the e-business factors(perceived e-Business advantage, top management support, institutional pressure) and e-Business performance(efficiency) between large and small companies.

• 동아시아경상학회지
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• 제11권4호
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• pp.1-10
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• 2023

Purpose - Investigating the connection between 'Oriental philosophy' and financial success is an adventure into the world of old knowledge and its applicability to the modern era. Thus, the current study aims to find ways to approach economic growth in a more inclusive, sustainable, and comprehensive way if we can sort out the complex webs that bind these two fields. Research design, data, and methodology - The main component of the current study is a thorough literature investigation in the current major database that gathers information from fifteen significant research articles. Numerous disciplines, including political science, economics, philosophy, and cultural studies, are represented among the selected papers. Result: The finding section provides a comprehensive knowledge of how concepts of oriental philosophy intersect with and have the capacity to revolutionize economic systems by delving into the subtle insights gleaned from the literature survey, case studies, and comparative analyses. Conclusion - The study concludes that oriental philosophies' emphasis on social harmony and community welfare points to the necessity of policies beyond only looking at financial data. Practitioners can use the study's conclusions to guide the creation of inclusive policies that put the welfare of all people first, deal with social injustices, and advance environmental sustainability.

• 무역학회지
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• 제45권4호
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• pp.153-169
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• 2020

This study compares and analyzes the effects of GVC participation on export competitiveness in manufacturing and service industry in 36 OECD countries and 28 non-OECD countries. According to the statistical analysis result, the GVC participation had a negative impact on export competitiveness in manufacturing industry, while it had a positive impact in the service industry. In the case of the manufacturing industry, participation toward the backward GVC had a positive impact on export competitiveness before the financial crisis, besides, participation toward the forward GVC had a positive impact on export competitiveness. In the case of the service industry, export competitiveness through forward GVC participation has increased since the financial crisis has occurred, and backward GVC participation was estimated to have a negative impact on export competitiveness. The results of this study implies that, to secure export competitiveness, a converged approach of the manufacturing and service industries to upgrade the global value chain is needed.

• 한국생활과학회지
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• 제21권1호
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• pp.41-58
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• 2012

The purpose of this study was to compare the job loss and job seeking experiences between middle-aged men and their younger cohort. Participants included 11 middle-aged unemployed men and nine younger unemployed men. The study adopted a phenomenological approach. In-depth individual interviews were carried out and the theme analysis was used to analyze the interview data. The results showed that the two cohorts experienced the macroeconomic crises, the foreign exchange crisis in 1997 and the global financial crisis in 2008, differently. Their experiences affected their attribution of the unemployment and job seeking process. They expressed ambivalence toward their family while dealing with social isolation from extrafamilial support. Most of the participants criticized government employment support policies and services.

• Management Science and Financial Engineering
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• 제10권2호
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• pp.53-71
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• 2004

In this study, a mathematical model that shows the optimal payout policy is developed. The model is new and unique in the sense that not only continuous-time framework is used, but also both partial differential equation (PDE) and real-option approach are utilized in the derivation of optimal payouts for the first time. In the model building, non-linear demand curve for dividend payouts in the competitive capital markets is assumed. From the sensitivity analysis using traditional comparative static analysis, some useful managerial implications which are consistent with famous previous studies are derived under realistic conditions. All results in this study, however, are valid under the assumption that the opportunity costs follow geometric Brownian motion, which is widely used in economic science and finance literature.

• 아태비즈니스연구
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• 제12권1호
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• pp.135-149
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• 2021

Purpose - I analyzes risk-to-performance evaluated in the market using data from sale and lease back. Specifically, I analyze from the perspective of financial institutions that purchase sale and lease back based on the cases of investment by ship investment companies and acquisition of ships. Design/methodology/approach - I use 49 sale and lease back data from 2017 to 2019 for empirical analysis. Findings - The main results of this paper are as follows. First, after sale and lease back of domestic ships, the average amount of sales by the leased shipping company is 25.1 billion won, the average amount of investment by the purchased financial institution is 14.6 billion won (60%) and the average length of the ship is nine years. In ship finance, sale and lease back is deemed to be appropriately used as a means of restructuring for a large amount of money. Second, the main risk factor for sale and lease back of domestic ships is credit risk and can be measured in VaR in practice. As a result of the empirical analysis, the average credit risk burden ratio is 9%. As a major risk factor, low creditworthiness of restructuring companies is the key. Third, as a result of measuring the profitability of financial institutions that purchase sale and lease back of domestic ships at a net current price, it has an average value of 300 million won, but the deviation by case is very large. Fourth, the risk adjusted performance of sale and lease back of domestic ships is 0.54 on average compared to the total risk capital, and 0.52 compared to the stock-risk capital, and as with profitability earlier, the deviation of each case is very large and misaligned. In order to boost the sale and lease back market for large and long-term assets, in order to overcome low profitability as a prerequisite for future participation of commercial purchased financial institutions, it is expected that purchase decisions based on expectations versus risk will be necessary. Research implications or Originality - The results of this paper are expected to broaden the understanding of sale and lease back and foster the ability to assess long-term risk and performance. Based on this, it is believed that rapid restructuring of companies through sale and lease back of large amounts of long-term assets will greatly increase the utility of the domestic financial market.

• 전자공학회논문지
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• 제53권3호
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• pp.76-88
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• 2016

사물통신(M2M)은 사람의 개입이나 간섭 없이도 2개 이상의 단말 간에 통신을 가능하게 하는 기술이다. M2M 통신은 환경 모니터링, 헬스 케어 등과 같은 다양한 유즈케이스에 적용될 수 있다. 대부분의 유즈케이스에서 M2M은 관심 있는 환경으로부터 데이터를 수집하기 위해서 센서 노드를 활용하며 데이터는 다른 기기(즉, 게이트웨이, 싱크 노드)를 거쳐 M2M 응용으로 전송된다. 어떤 유즈케이스에서는 M2M 단말들이 서비스의 신뢰성을 향상시키기 위해서 센서 데이터를 저장하고 처리할 수 있도록 설계되어진다. 게이트웨이와 싱크노드 또한 센서 노드들로부터 수집된 데이터를 저장 및 처리할 수 있다. 이러한 형태의 접근방법은 학계 및 산업계 모두에 매우 도전적으로 받아들여지고 있다. 이러한 접근방법의 성능을 개선하기 위해 본 논문에서는 M2M 단말과 게이트웨이를 위한 공통 서비스 보안 플랫폼(CSSP)를 제안한다. CSSP 플랫폼은 단말과 게이트웨이를 보다 정확하고 효율적으로 만들기 위한 솔루션을 제공한다. 게다가, 통신 프로토콜간의 비교 및 선정된 메트릭스에 따른 프로토콜들의 성능 분석을 제시한다.

• Asian Pacific Journal of Cancer Prevention
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• 제13권11호
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• pp.5791-5797
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• 2012

Introduction: Return-to-work (RTW) can be a problematic occupational issue with detrimental impact on the quality of life of previously-employed breast cancer survivors. This study explored barriers and facilitators encountered during the RTW process in the area of cancer survivorship. Materials and Methods: Six focus groups were conducted using a semi-structured interview guide on 40 informants (employed multiethnic survivors). Survivors were stratified into three groups for successfully RTW, and another three groups of survivors who were unable to return to work. Each of the three groups was ethnically homogeneous. Thematic analysis using a constant comparative approach was aided by in vivo software. Results: Participants shared numerous barriers and facilitators which directly or interactively affect RTW. Key barriers were physical-psychological after-effects of treatment, fear of potential environment hazards, high physical job demand, intrusive negative thoughts and overprotective family. Key facilitators were social support, employer support, and regard for financial independence. Across ethnic groups, the main facilitators were financial-independence (for Chinese), and socialisation opportunity (for Malay). A key barrier was after-effects of treatment, expressed across all ethnic groups. Conclusions: Numerous barriers were identified in the non-RTW survivors. Health professionals and especially occupational therapists should be consulted to assist the increasing survivors by providing occupational rehabilitation to enhance RTW amongst employed survivors. Future research to identify prognostic factors can guide clinical efforts to restore cancer survivors to their desired level/type of occupational functioning for productivity and wellbeing.