• The Korean Journal of Financial Studies
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• v.12 no.1
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• pp.89-104
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• 2006

이 논문은 자본조달순위이론(pecking order theory)을 한국 유가증권시장에 상장된 제조기업을 대상으로 실증적 검정을 하였다. 설명변수로 기업의 자금부족(deficit)과 부채비율과의 관계를 분석한 결과 자본조달순위이론이 지지되는 결과를 얻지 못하였으며, 통제변수에 유형자산, 기업규모, 수익성 등 전통적인 자본구조영향요인 변수들을 포함시켜 분석한 결과, 정보비대칭이론에 의한 설명이 적합한 것으로 해석되었다. 유형자산이 증가할수록 부채비율은 감소하였고, 기업규모가 증가하면 레버리지가 감소하는 관계를 나타냈으며, 수익성이 증가함에 따라 부채비율이 감소하는 것으로 분석되었다. 직전년도의 부채규모가 높은 경우에는 당해 연도의 부채사용이 감소하고, 직전년도의 레버리지가 낮은 경우에는 당해 연도의 부채가 증가하는 평균회귀현상을 나타냈다.

• Journal of Agricultural Extension & Community Development
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• v.24 no.1
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• pp.63-81
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• 2017

The purpose of this study is to analyze the changes of time series, the use by farm type and the causes of farm household debt. First, the mid and long term changes in farm household debt over the past 50 years have increased. Since 2010, the share of non-agricultural debt has exceeded the share of agricultural debt. Second, as a result of the analysis of the farm household debt use by farm type - full time&part time, farming type, land size, age, family members - there was a difference between the agricultural and the non-agricultural debt according to the type of farm household in a significant level of 1%. Finally, as a result of the cause analysis of the farm household debt, the related non-agricultural expenditure variables and the dummy variable of the manager's age, family member and land size has a common influence on the farm household debt increase.

• Review of KIISC
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• v.30 no.1
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• pp.55-60
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• 2020

2018년 1월, Meltdown, Spectre와 같은 마이크로아키텍처의 취약점을 이용하는 부채널 공격이 등장하면서 전 세계적으로 부채널 공격에 관한 관심이 증가하였다. 또한, 소모 전력 분석, 전파 분석 등 전통적 부채널 공격과는 달리 캐시의 상태변화를 이용하는 공격인 캐시 부채널 공격이 Meltdown, Spectre에 이용되면서 이에 관한 다양한 연구가 진행되고 있다. 이러한 유형의 공격은 완벽하게 방어할 수 있는 대응 패치가 존재하지 않고 일부 공격에 대응할 수 있는 대응 패치도 모든 시스템에 적용할 수 없은 경우가 많으므로 완벽한 대응이 매우 힘든 실정이다. 특히 캐시 부채널 공격을 이용하여 SGX와 같은 TEE(Trusted Execution Environment)를 공격할 수 있다는 것이 드러나면서 TEE를 공격하기 위한 다양한 공격 도구로 이용되고 있다. 본 논문에서는 Meltdown과 Spectre 및 다양한 캐시 부채널 공격에 대한 동향을 살펴보고자 한다.

• The Journal of shipping and logistics
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• v.34 no.4
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• pp.615-635
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• 2018

Using data from 2008 to 2017, this study analyzed the financial characteristics of offshore freight shipping companies in Korea, categorized by vessel type, and their impact on business performance. The analysis showed an upward trend in the overall debt ratio of offshore freight transport companies and differences in the financial characteristics of each vessel type as well as the major factors affecting business performance. In particular, the significant factors affecting the ROA performance of the business are the size of business and debt ratio in the LPG line; the growth rate in the bulk line; the size of business, debt ratio, and year in the general freight line; and the size of business, growth rate, entertainment expense rate, debt ratio, and year in the full container line. Therefore, each shipping company needs to recognize differences in key financial factors affecting its performance based on vessel type, implement proactive measures, and diversify its vessel portfolio.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.4
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• pp.1932-1937
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• 2014

This paper examines whether debt ratio effects earnings management. There are various methods that estimate earnings management. This paper examines whether these methods impact on the relationship between earnings management and debt ratio. In addition, this study examines whether these relationship effects of debt type. Previous studies in this area haven't examined the relationship between debt ratio and earnings management in Korea. These studies didn't consider earnings management's method to analysis for this relationship. This paper tests the relationship between earnings management and debt ratio with methods of earnings management unlike from previous studies. Results are summaried as following. First, the relationship between debt ratio and earnings management was different for these methods. Abnormal Accruals that used estimation of eanrnings management in previous studies didn't examine these results that debt ratio effects of earnings management. However, it was significant positive the relationship between real activity management and debt ratio.

• Korean Journal of Human Ecology
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• v.9 no.1
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• pp.21-32
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• 2000

This study investigated the effect of householder's occupation on the debt structures of households. Household debts were categorized into six types according to borrowing sources: debts from banks, other financial institutes, employers, private sources, Gye, and retailers. Householder's occupations were classified into four groups: full-time employees, employers, farmers & fishermen, and part-time employees. The data came from the 1996 Korean Household Panel Study. It was found that the rates of holding each types of debt and the debt amounts were different according to householder's occupation. The human and economic resources to overcome the possible household debt problems were also different by the householder's occupation.

• Journal of Digital Convergence
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• v.15 no.12
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• pp.233-238
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• 2017

Although numerous theoretical and empirical studies on the capital structure have been performed, the studies on the capital structure of the high potential enterprises have not been worked. This paper performed empirical analyses for the first time to find out the determinants of capital structure of the high potential enterprises of Korea using the financial data of the manufacturing high potential enterprises listed on the Korea Exchange and KOSDAQ during 2010~2016. The results of regression analyses with debt ratio as dependent variable and profitability, firm size, asset tangibility and non-debt tax shield as independent variables show that the coefficients were relatively significant. The variables of the profitability and the tangibility were found to have positive relationship with the debt ratio. The non-debt tax shield were found to have in general positive relation with the leverage.

• Proceedings of the Korea Institutes of Information Security and Cryptology Conference
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• 2003.07a
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• pp.138-141
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• 2003

스마트카드와 같은 장치의 부채널 공격이 가능한 것으로 입증되면서 많은 연구가 진행되고 있다. 부채널 공격의 일종인 오류기반 공격은 구현 가능성이 논란의 대상이었지만 카메라 플래쉬를 이용한 광학적 공격이 보고되면서 실현 가능성이 높은 것으로 인식되고 있다. 본 논문에서는 AES에 대해 향상된 오류기반 공격을 제안한다. 제안된 방법을 사용하면 공격에 필요한 암호문 수를 기존 방법보다 많이 줄일 수 있으며 최적의 조건에서는 하나의 암호문만으로 키를 얻을 수 있다. 오류는 일시적으로 생긴 후 없어지는 유형을 사용할 수도 있고 영구적인 것일 수도 있다. 오류에 의한 변경 확률이 1이 아닌 경우와 오류 발생 시점의 오차에 대해서도 살펴본다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2022.10a
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• pp.101-103
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• 2022

Elliptic curve cryptography (ECC) is widely used in hardware implementations of public-key crypto-systems for IoT devices and V2X communication because it is suitable for efficient hardware implementation and has high security strength. However, ECC-based public-key cryptography is known to have security vulnerabilities against side-channel attacks, so it is necessary to apply countermeasures against security attacks in designing ECC processor. This paper describes a survey on the side-channel attacks and countermeasures applicable to ECC processor design.

• Management & Information Systems Review
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• v.34 no.3
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• pp.179-196
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• 2015

The purpose of this study is to examine the influence of variable cash compensation depending on short-term performances instead of stock compensation for the executives on the investment in tangible assets, investment and R&D, and profit reconciliation. The detailed objectives of the study include, first, to examine the influence of the cash compensation on investment in tangible assets and profit reconciliation depending on the characteristics of the company and, second, to examine the influence of cash compensation on the profit reconciliation of the investment in R&D depending on the characteristics of the company. The results of the analysis in this study can be summarized as follows; Firstly, the result of the positive analysis, as the compensation for the executives increased, by the characteristics of the companies conducted on the significant 'positive' (+) on the investment in R&D and the profits reconciliation showed that the high tech industry and the share ratio of the executives did not show a significant result, while the debt ratio showed a significantly positive result. Secondly, the result of the positive analysis, as the compensation for the executives increased, by the characteristics of the companieson the significant 'positive' (+) of the investment in tangible assets and reconciliation of profits showed that the high-tech industry did not show a significant result, while the hypothesis on the share ratio of the executives and the hypothesis on the debt ratio showed results that are significantly positive as expected. In other words, it can help Korean companies, which have to investment in R&D and tangible assets to increase their competitiveness and promote future growth dynamics, to design a manager compensation system that is appropriate for our country to support efficient investment decision-making.