• Sleep Medicine and Psychophysiology
• /
• v.8 no.2
• /
• pp.90-97
• /
• 2001

The reason for exploring dreams is to understand the of patient's conflicts and unconscious motivation. Even if the therapeutic value of dreams is considerably faded these days, I can not deny that dreams are still very useful. From the beginning of human history, dreams have been an appealing subject for many people. In the past, dreams chiefly had the value of prophetic meaning, and in our tradition attention was paid to dreams in terms of good and bad dichotomy. Freud's discovery of the Unconscious and technical development of its exploration is reinforced by dream interpretation. In contemporary terms, although dreams are not the royal road to the Unconscious, they surely present a short-cut. I suggest that dreams as a treasure island of the Unconscious have a useful therapeutic value, and that stressing the importance of dreams is by no means anachronistic. I believe that practical sessions without dreams are like a river without bridges.

• The Journal of Fisheries Business Administration
• /
• v.39 no.2
• /
• pp.109-123
• /
• 2008

This study is aimed to establish an investment decision model for offshore aquaculture project of rock bream in Korea using a certainty equivalent method (CEM) based on the expected utility theory and to investigate its economic viability under risk and uncertainty. In the analysis with CEM, the effects of risk attitude and risk level on investment and risk premium were examined and the impacts of various risk and uncertainty factors on the investment decision were also assessed. In addition, the outcomes were compared to those evaluated by the traditional net present value (NPV) method. Results show that risk premium grew as the investors became more risk averse and uncertainty level (the variance of NPV) increased. Consequently, the certainty equivalent value was predicted to decrease from the value assessed by the traditional NPV method.

• Journal of Gastric Cancer
• /
• v.15 no.1
• /
• pp.1-9
• /
• 2015

Recently, lymph node micrometastasis has been evaluated for its prognostic value in gastric cancer. Lymph node micrometastasis cannot be detected via a usual pathologic examination, but it can be detected by using some other techniques including immunohistochemistry and reverse transcription-polymerase chain reaction assay. With the development of such diagnostic techniques, the detection rate of lymph node micrometastasis is constantly increasing. Although the prognostic value of lymph node micrometastasis remains debatable, its clinical impact is apparently remarkable in both early and advanced gastric cancer. At present, studies on the prognostic value of lymph node micrometastasis are evolving to overcome its current limitations and extend the scope of its application.

• Kyungpook Mathematical Journal
• /
• v.56 no.1
• /
• pp.221-233
• /
• 2016

The present paper proposes a new monotone iteration method for existence as well as approximation of the coupled solutions for a coupled periodic boundary value problem of first order ordinary nonlinear differential equations. A new hybrid coupled fixed point theorem involving the Dhage iteration principle is proved in a partially ordered normed linear space and applied to the coupled periodic boundary value problems for proving the main existence and approximation results of this paper. An algorithm for the coupled solutions is developed and it is shown that the sequences of successive approximations defined in a certain way converge monotonically to the coupled solutions of the related differential equations under some suitable mixed hybrid conditions. A numerical example is also indicated to illustrate the abstract theory developed in the paper.

• Journal of the Korean Mathematical Society
• /
• v.43 no.3
• /
• pp.623-634
• /
• 2006

Various methods have been studied to construct a fuzzy regression model in order to present a fuzzy relation between a dependent variable and an independent variable. However, in the fuzzy regression analysis the value of the center point of estimated fuzzy output may be either greater than the value of the right endpoint or smaller than the value of the left endpoint. In the case, we cannot predict the fuzzy output properly. This paper presents sufficient conditions to construct the fuzzy regression model using several methods investigated by some authors and then introduces the censored fuzzy regression model using the censored samples to manipulate the problem of crossing of the center and the end points of the estimated fuzzy number. Examples show that the censored fuzzy regression model is an extension of the fuzzy regression model and also it improves the problem of crossing.

• The Korean Journal of Archival Studies
• /
• no.2
• /
• pp.103-128
• /
• 2000

The classification of records is basically different from that of librarian materials because records have a nature of spontaneous and correlated product made during the process of work, as well as a value of proof and information. Hence the main task of archival management institute is to classify those records through the process of transfer and receipt for the purpose of reservation and utilization of their value. Therefore, the records should be classified by the manner, which reflects the function and organization of producing institute, and in turn, the principles of producing site and original record order should be maintained for this purpose. The characteristics of librarian materials and records and the tasks of management institutes form the basis of very different principles. The records can present the characteristics of producing institute and maintain the value made by the correlated nature as they are classified, managed and preserved by the above principles, In addition, it is known how and why they were produced and utilized, as well as they can be preserved in original form and effectively arranged, recorded and managed.

• Journal of Industrial Convergence
• /
• v.14 no.2
• /
• pp.39-46
• /
• 2016

The purpose of this Study is to present the tasks and means of improving the operational system of public culture and arts institutes in the future on the basis of the analysis of the effectiveness of operation of public culture and arts institutes. The summary of the results of analysis in this Study is as follows: Firstly, it was found that the factor variables that impart effect on the operation of public culture and arts institutes included (1) artistic value, (2) convenience and (3) organizational management, while the performance variable of public culture and arts institutes was (4) operational performance. Secondly, in the analysis of the structure that explains the operational effects of public culture and arts institutes, convenience and organizational management were found to impart effects on the operational performances. However, artistic value was found to have no effect on operational performances. Therefore, these results of analysis imply that organizational management and convenience, rather than artistic value, need to be fortified in order to elevate the operational performances of public culture and arts institutes.

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 2002.05a
• /
• pp.46-51
• /
• 2002

A grinding technology is very essential to finish the surface of IT and BT industrial application parts such as wafer, optical connection part and lenses etc. However the finding machine has bead depended on imports. Especially, it is completely imported for machining high precision part relevant to domestic electric and communicational industries. The amount to import grinding machine is about $110milions. It takes about 35% of total import amount of all the machine tools. A domestic finder manufacturer is a very small-scaled bussinessman and research facilities is poor. Recently, it is increasing to demand high speed and precision grinding technology because it brings cost down and value added up. Its further study will be something related to inteligent grinding system fur value added and high precision part. It will make domestic grinding technology to its advanced country level.

• Asia pacific journal of information systems
• /
• v.30 no.2
• /
• pp.328-352
• /
• 2020

If a firm announces an investment in IT security, how the market value of its competitors reacts to the announcement? We try to shed light on this question through an event study design. To test the relationship, we collected 143 announcements on cybersecurity investment and measured the subsequent impact on 533 competitors' abnormal returns, spanning from 2000 to 2019. Our estimation results present that, on average, the announcements have no observable impact on the market value of announcing firms and competitors as well, which is consistent with findings of a prior study. Interestingly, however, the impact becomes evident when we classify our samples by industries (Finance vs. non-Finance or ICT vs. non-ICT) and firm size (Big vs. Small). We interpret our empirical findings through the lenses of contagion effect and competition effect between announcing firms and their competitors. Key finding of our study is that, for financial service firms, the effect resulting from the announcement on cybersecurity investment transfers to competitors in the same direction (i.e., contagion effect).

• Korean Journal of Agricultural Science
• /
• v.30 no.1
• /
• pp.89-101
• /
• 2003

For the pre-feasibility study and project evaluation, the discount rate or cutoff rate should be given by the government authority. To get the Benefit/Cost Ratio, NPV(Net Present Value) and IRR(Internal Rate of Return) of the public investment projects, the pertinent and realistic discount rate should be determined to be suitable to the present time period. The cut-off rates in Korea were equivalent to 15% in 1970's, 10% in 1980's and 8% in 1990's. The prevailing rate of discount as 8% is considered not to be suitable for the 2000's public project appraisal considering the present interest rates on deposit and national bonds. To determine the socio-economic feasibility of the public projects, the IRR should be bigger than the present cutoff rate. When we still use the high old rate of discount, the analytical results of project appraisal will show always economically unfeasible. Therefore the new rate of discount suitable for present time should be determined by the government. The public projects to be implemented in 2000 year onward are recommended to be adapted 5% of cutoff rate for the project appraisal and evaluation according to the results of reviewing the tendency of discount rates and market rates of interest in Korea.