• KDI Journal of Economic Policy
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• v.13 no.3
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• pp.75-88
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• 1991

성과급제도(成果給制度)란 개인(個人) 혹은 집단(集團)의 경제적(經濟的) 성과지표(成果指標)를 임금보상(賃金報償)의 추가적인 근거로 사용하는 제도(制度)를 말한다. 본고(本稿)에서는 성과급제도(成果給制度)의 한 종류인 이윤공유제도(利潤共有制度)의 경제적(經濟的) 의미(意味)를 검토하였다. 이윤공유제도(利潤共有制度)는 기업입장(企業立場)에서 보면 이윤(利潤)에 대해 일정률의 조세(租稅)를 납부한 후, 근로자(勤勞者)를 고용(雇傭)할 때마다 일정액의 보조금(補助金)을 받는 제도이다. 한편 근로자(勤勞者)의 입장에서 보면 최초에 고정급(固定給)을 낮게 유지해서 얻은 경영성과(經營成果)의 일부를 다른 근로자(勤勞者)들과 골고루 나누어 가지는 제도이다. 이런 본질적인 특성은 경제(經濟)에 긍정적인 효과와 부정적인 효과를 동시에 미친다. 우선 긍정적인 측면으로는 기업입장에서 노동(勞動)의 한계효용(限界效用)이 상대적으로 저렴해지므로 경제(經濟)의 물가수준(物價水準)은 하락하고 생산량(生産量)은 증가하게 된다. 그러나 이에 따르는 문제점도 과소평가할 수만은 없다. 우선 저렴한 한계노동비용(限界勞動費用) 때문에 이윤공유경제(利潤共有經濟)에서는 본질적으로 초과고용경향(超過雇傭傾向)이 내재하여 있으며, 또한 어느 한 개인의 노력에 의한 성과(成果)의 향상(向上)이 모두에게 분배되어 희석되므로 원래 의도되었던 동기유발효과(動機誘發效果)가 위축될 가능성이 있다. 또한 임금소득(賃金所得)이 변동(變動)하므로 위험기피적(危險忌避的)인 근로자(勤勞者)의 효용(效用)이 위협을 받게 된다. 이런 여러 문제점을 극복하고 성과급(成果給)의 원래 긍정적인 측면을 실현시키기 위해서는 근로자(勤勞者)의 경영참가(經營參加)가 보장되고, 이윤공유제(利潤共有制)의 채택에 대해 세제상(稅制上)의 유인(誘引)이 뒷받침되어야 하며, 정부(政府)의 경제안정화정책(經濟安定化政策)이 더욱 주의깊게 추구되어야 한다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.37 no.6B
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• pp.453-463
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• 2012

The Effect of asymmetric interconnection charge is different between where the retail price of incumbent is regulated and that of incumbent is not regulated. When the retail price of incumbent is not regulated, the brand loyalty and the relative magnitude of each marginal cost determine the effect of consumer surplus. However, when the retail price of incombent is regulated, network substitution effect also plays a important role to the consumer surplus. The higher the brand loyalty, the lower the network substitution effect, or the higher the marginal cost of the entrant, the social welfare through the asymmetric interconnection charge is more increased. In the other cases, the consumer surplus might be decreased.

• The Journal of the Convergence on Culture Technology
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• v.10 no.4
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• pp.431-435
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• 2024

This study aims to analyze cases of drone psychological warfare in modern conflicts and examine their effects and limitations. Focusing on the cases of the United States, Israel, and Ukraine, the study investigates the impact of drone-based surveillance, attacks, and propaganda activities on the morale and combat will of enemy forces. The findings indicate that drone psychological warfare has a significant effect in pressuring the enemy psychologically and weakening their will to fight. However, it also entails serious side effects, such as civilian casualties and controversies over violations of international law, which calls for an ethical review. This study is significant in providing a foundation for in-depth discussions on the effectiveness and ethics of drone psychological warfare.

• Proceedings of the Korea Contents Association Conference
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• 2018.05a
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• pp.21-22
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• 2018

최근 소셜 네트워킹 서비스(SNS)의 급격한 성장과 함께, SNS를 대상으로 상품 마케팅을 하는 기업(광고주)들이 증가하고 있다. 이에 따라 SNS에서 상품을 효과적으로 광고할 수 있는 광고 대행 유저들을 광고주에게 추천해주는 서비스들이 등장하였다. 하지만 위와 같은 대부분의 서비스들은 단순히 유저의 이웃 수를 기반으로 유저의 광고 효과를 평가하기 때문에, 유저를 통해 단계적으로 파급되는 광고 효과는 고려하지 못한다는 한계를 가지고 있다. 위와 같은 문제를 해결하기 위해, 본 논문은 영향력 최대화 (Influence maximization) 연구 분야의 기술을 활용하여, (1) 유저를 통해 단계적으로 파급되는 광고 효과를 고려하는 광고효과 최대화 방안을 제안한다. 또한 보다 정확하게 광고효과를 평가하기 위해, (2) 광고 상품과 유저 사이의 적합도를 정의하여 광고 대행인 선출 과정에 적용하였다. 실세계 데이터를 이용한 실험을 통해 제안하는 광고 대행 유저 선출 방안이 전통적인 선출 방안들과 비교하여 광고 효과가 더 큰 유저들을 선출한다는 것을 입증하였다.

• Proceedings of the Korea Inteligent Information System Society Conference
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• 2005.11a
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• pp.437-441
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• 2005

수많은 정보시스템들이 기업 및 조직에 도입되고 있다. 이러한 정보시스템들의 도입 효과 분석에는 많은 어려움이 따르는데, 특히 기존의 시스템을 e-business화 하는 e-transformation화 되고 있는 진행중인 시스템에 대한 평가는 난해면이 많다. 이에 본 논문에서는 이러한 경우의 정보시스템 효과평가를 위한 모델 수립을 위한 탐색적 연구 결과를 소개하고자 한다. 본 논문에서는 기존문헌 고찰을 통해 정보시스템 성과평가를 위한 모델과 방법론의 한계 및 이슈를 도출하고, 이를 극복하기 위해 EEM(E-transformation Evaluation Model) 모델과 방법론 구축의 필요성을 도출한다. EEM모델에서는 정보시스템도입의 현재 효과평가뿐만 아니라 현재에는 IT 효과가 일어나지 않지만 향후 정보시스템을 통한 IT효과측정이 가능하므로 측정대상에 따라 다각적인 적용이 가능하여 기업의 정책수립에 큰 도움이 되리라 사료된다.

• Journal of the Korea Concrete Institute
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• v.22 no.6
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• pp.761-768
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• 2010

When cracks occur in reinforced concrete structures, a steel carries all tensile force at crack section, while the concrete between cracks carries a part of the tensile force due to bond, so that the steel is less elongated. This is called the tension-stiffening effect, that plays an important role in verification of a serviceability limit state. But it is a complicated work to use a complex strain distribution between cracks, therefore an average strain is used to calculate deflection and crack width. In Eurocode 2, tension-stiffening effect expressed in the first order form or the second order form is used in calculating an average curvature for deflection. In this study for a flexural member deflection and crack width are calculated using various models for the tension-stiffening effect and the results are compared with the values of Eurocode 2 and KCI provisions. As results, the predicted values using the second order form are appeared to be well agreed with the experimental values and it could secure more analytical consistency.

• Journal of Convergence for Information Technology
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• v.10 no.3
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• pp.16-21
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• 2020

This paper describes the jamming characteristics of a stand-off jammer jamming the LPI radar. The LPI radar reduces the side lobes of the receiving antenna to reduce the effect of jamming. It is easy a radar to predict the effect of jamming on a self-protection jammer where the jammer is in the same position as the target. However, for stand-off jammer jamming at different locations from the target, the prediction of jamming effect is complex. In this paper, the jamming effect of LPI radar is analyzed using signal to jamming ratio and burn-through range. Also, when the antenna's side lobe decreases below -30 dB, the stand-off jamming effect in the side lobe direction is weak. So we proposed a new jamming method for the main lobe and analyzed the jamming effect. This study is expected to be useful for the design and operation of aircraft jammers.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.13 no.1
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• pp.13-20
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• 1995

Error analysis is important in horizontal positioning. In case of error analysis, standard error ellipse is generally used to establish the precision regions, but it will be replaced by 95% confidence ellipse. It is more effective than standard error ellipse in resection for measured procedures and establishment for criterias of relative error. Therefore, In this paper deals with analysis of application to 95% confidence ellipse in horizontal positioning. This study deals with error analysis of plane trilateration network which are various types of control point. also, this paper have studied for theory of error analysis in order to using least square adjustment. Thus, This paper's conclusion are as follows; 95% confidence ellipse could be used to establish of specification in korea, also, it is possible for us to predesign for optimum surveying network by 95% confidence ellipse.

• Journal of IKEEE
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• v.25 no.4
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• pp.584-590
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• 2021

This paper proposes a removal method of signal interference between ultrasound sensors where ghost signals due to interference are excluded and correct signal is recognized in distance mensurement using ultrasound sensors. The proposed method detects and excludes ghost signals when previous measured distance is compared to current measured distance and the distance difference exceeds a threshold. The threshold is fixed in conventional methods, so ghost signals cannot be correctly excluded when ultrasound sensor or target object move rapidly. On the contrary, to improve accuracy, the threshold is not fixed in the proposed method, and the threshold is adpatively determined based on the relative velocity when ultrasound sensor or target object move. Experiments of distance measurement with ultrasound signal interference are carried out where multiple ultrasound sensors of same type are exploited with maximum interference, and the results show that the proposed method efficiently exclude ghost signals.

• The Journal of Engineering Geology
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• v.25 no.4
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• pp.587-598
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• 2015

We examined various existing threshold methods for the determination of the first arrival time of acoustic emission (AE), and developed a new variable threshold method that could determine the first arrival time of AE more accurately and more quickly than existing methods. The new method, a modification of an existing threshold method, does not fix the threshold, but applies variable thresholds for the AE signals according to noise analysis. Two- and three-dimensional models were established to test the effectiveness of the new method. It could determine source locations of AE in a two-dimensional model 38.3% more accurately than the pre-existing threshold methods. Its accuracy improvement over the existing methods in a three-dimensional model was about 15.2%. A practical test involved measuring the source locations of AE during three-point bending tests of granite cores. The new method placed the sources closer to the fracture plane than did the pre-existing methods, indicating its superior (and quicker) ability to determine the source locations of AE.