• The Journal of Information Systems
• /
• v.12 no.2
• /
• pp.151-163
• /
• 2003

This research studied E-Biz strategy based on the types of internet shopping-mall and user group. This study classified types of internet user into suffer group, searcher group, and confusion group according to navigation characteristics. The types of internet shopping-mall were divided into total directed mall, total mediated mall, special directed mall, and special mediated mall. The empirical study revealed that the intention of purchase has positive relationship with the assurance of e-SERVQUAL. Mediated type shopping-mall had higher market share than directed type in the use of internet shopping-mall. Suffer group was the target market of total mediated shopping-mall. Users of this group considered importantly the trust of e-SERVQUAL. Searcher group targeted special mediated shopping-mall. They had significant consideration to the responsiveness of e-SERVQUAL. Confusion group targeted direct shopping-mall. These groups had important consideration to the assurance of e-SERVQUAL.

• Korean Journal of Adult Nursing
• /
• v.16 no.4
• /
• pp.585-596
• /
• 2004

Purpose: This study is to examine the effect of balance taping therapy applied on the old people who suffer from arthritis upon the pain in legs and obstacle in daily activity. Methods: The research period was from Dec. 2003 to Feb. 2004, and among the old female people who visited one of the welfare halls in Seoul downtown and 4 assembly hall for old people who aged over 60 years. 30 of the experimental group and 33 of control group were optionally collected. Results: The pain degree in legs and the uneasiness degree of the obstacle in the daily life of the experimental group who were treated by the balance taping was decreased than those of the control group(p=0.015, p=0.000). Conclusions: Based upon the above result, it was confirmed that the balance taping therapy has influence in decreasing the degree of the uneasiness in the leg pain and daily activity obstacle of the old people who suffer from the arthritis, and therefore it is thought that this therapy can be usefully applied for one of the nursing methods for the old patients, and besides the repeated future researches are needed.

• Journal of Haehwa Medicine
• /
• v.15 no.2
• /
• pp.263-272
• /
• 2006

Purpose Brain vessles have autoregulation function, so even when perfusion pressure drops, cerebral blood flow remain stable by vasodilation. Latest research on this reserve of cerebral vessels is being done using TCD, which measures the reserve of the vessels. We did a research comparing cerebral vessel and peripheral vessel reserve between Taeumin, who are more likely to suffer CVA, and the normal. We observed blood flow of Internal carotid artery siphon and radial indicis artery of the two group with TCD. Method We picked 20 people out of patients diagnosed as cerebral infarction at Cheon-An Oriental hospital of Daejeon University. They were diagnosed as Taeumin with QSCCII questionnaire and constitutional differentiation. Using TCD, we measured highest blood flow rate, mean blood flow and asymmetric counting blood flow of Internal carotid artery siphon and radial indicis artery at rest. And then we measured again after stimulating cerebral vessels, by triggering hypercapnia by self apnea and peripheral vessels by palm heating. Result At rest, mean blood flow rate of Internal carotid artery siphon showed significant decrease compared to control group. Blood flow rate of Internal carotid artery siphon after hypercapnia showed significant decline in highest blood flow rate and mean blood flow compared to control group. Cerebral vessel reaction after the hypercapnia induction showed great change in experiment group than the control group. Peripheral vessel reaction after palm heating showed significant decline in experiment group compared to control group. Conclusion In conclusion, measuring the alteration of blood flow used in diagnosing cerebral infarction, is more sensitive when vessel stimulation is done. Non-invasive TCD is effective especially in case of Taeumin who are more likely to suffer vascular disorder than others.

• Journal of the Korean housing association
• /
• v.17 no.4
• /
• pp.155-163
• /
• 2006

To investigate the actual management condition of group homes for the elderly and their living environment, four group homes and 26 elderly people living in the group home were surveyed. As the results, the relationships between the administrator and the elderly were acceptable, but the group homes seem suffer from insufficient administrative supports. The most required service in the group homes was a conversational partner service. Moreover, the most satisfactory point for the elderly living in group homes was the settlement of food, clothing, and housing. The unsatisfactory things were the service related to medical, leisure, and house work and an invasion of their private life. The resident elderly in group homes were fully satisfied with their living environment including the relationship with the manager and the people in the facility. They, however, do not have much chance to make an exchange with their neighbor. Overall, the elderly want to stay continuously in the group homes where they are living current.

• Proceeding of Spring/Autumn Annual Conference of KHA
• /
• 2005.11a
• /
• pp.93-96
• /
• 2005

To investigate the actual management condition of group homes for the elderly and their living environment, four group homes and 26 elderly people living in the group home were surveyed. As the results, the relationships between the administrator and the elderly were acceptable, but the group homes seem suffer from insufficient administrative supports. The most required in the group homes was a conversational partner service. Moreover, the most satisfactory point for the elderly living in group homes was the settlement of food, clothing, and housing. The unsatisfactory things were the service related to medical, leisure, and house work and an invasion of their private life. The resident elderly in group homes were fully satisfied with their living environment including the relationship with the manager and the people in the facility. They, however, do not have much chance to make an exchange with their neighbor. Overall, the elderly want to stay continuously in the group homes where they are living current.

• 한국정보디스플레이학회:학술대회논문집
• /
• 2006.08a
• /
• pp.902-905
• /
• 2006

Plasma Display Panels(PDPs) suffer from motion artifacts because of subfield driving method. In this paper, a modified motion compensation method is proposed. We apply the optimized mapping table to the higher subfield group and the fill-up method to the lower subfield group to generate optimum mapping patterns. This method does not concentrate 'on' mappings on higher subfields. Therefore it can possibly become a more robust motion compensation.

• Journal of Korean Academy of Nursing
• /
• v.36 no.1
• /
• pp.15-24
• /
• 2006

Purpose: This study was to examine the effects of foot reflexion massage on sleep disturbance, depression disorder, and the physiological index of the elderly in nursing homes. Method: The research design was a non-equivalent control group pretest-posttest quasi-experimental study. The subjects in this study were 50 elderly people who resided in two different nursing homes in the same region. An experimental group and a control group were organized with 25 subjects respectively, and foot reflexion massage was provided for 12 sessions, 30 minutes per session. The selected dependent variables were sleep disturbance, depression disorder, and physiological indices(blood plasma serotonin, serum cortisol), which were all measured before and after foot reflexion massage was offered. Data analysis included $x^{2}$-test, t-test, paired t-test, and ANCOVA, using the SPSS program package. Result: 1. The experimental group improved sleep quality more than the control group. 2. The experimental group had less depression disorder than the control group. 3. The experimental group had higher serotonin levels than the control group. Conclusion: It's necessary to give foot reflexion massage as a successful nursing intervention to elderly who undergo a change in sleep, and suffer from a depression disorder due to a deterioration in sleep.

• Journal of Communications and Networks
• /
• v.14 no.1
• /
• pp.104-110
• /
• 2012

Group key agreement protocols allow a group of users, communicating over a public network, to establish a shared secret key to achieve a cryptographic goal. Protocols based on certificateless public key cryptography (CL-PKC) are preferred since CL-PKC does not need certificates to guarantee the authenticity of public keys and does not suffer from key escrow of identity-based cryptography. Most previous certificateless group key agreement protocols deploy signature schemes to achieve authentication and do not have constant rounds. No security model has been presented for group key agreement protocols based on CL-PKC. This paper presents a security model for a certificateless group key agreement protocol and proposes a constant-round group key agreement protocol based on CL-PKC. The proposed protocol does not involve any signature scheme, which increases the efficiency of the protocol. It is formally proven that the proposed protocol provides strong AKE-security and tolerates up to $n$-2 malicious insiders for weak MA-security. The protocol also resists key control attack under a weak corruption model.

• International Journal of Precision Engineering and Manufacturing
• /
• v.7 no.2
• /
• pp.56-59
• /
• 2006

A vibrational model of powder transfer equipment based on the lumped parameter method was developed, in which the operating motion consists of surging, bouncing, and pitching. After decoupling the equation of motion, the vibrational excitation source of the pitching motion was removed. So the designers are able to plan the optimum design to adjust the motion trajectory of the powder transfer equipment. That is, a procedure to adjust the motion trajectory of powder transfer equipment by changing design specifications such as the installation position, the direction of the motor, the driving speed, the mass unbalance, the stiffness coefficient, and the installation position of the support spring, is presented in this paper. The powder transfer equipment manufactured according to the results of this study did not suffer fatigue destruction, since the maximum stress on the basket structure was sufficiently small.

• Genomics & Informatics
• /
• v.14 no.4
• /
• pp.187-195
• /
• 2016

In genetic association studies with high-dimensional genomic data, multiple group testing procedures are often required in order to identify disease/trait-related genes or genetic regions, where multiple genetic sites or variants are located within the same gene or genetic region. However, statistical testing procedures based on an individual test suffer from multiple testing issues such as the control of family-wise error rate and dependent tests. Moreover, detecting only a few of genes associated with a phenotype outcome among tens of thousands of genes is of main interest in genetic association studies. In this reason regularization procedures, where a phenotype outcome regresses on all genomic markers and then regression coefficients are estimated based on a penalized likelihood, have been considered as a good alternative approach to analysis of high-dimensional genomic data. But, selection performance of regularization procedures has been rarely compared with that of statistical group testing procedures. In this article, we performed extensive simulation studies where commonly used group testing procedures such as principal component analysis, Hotelling's $T^2$ test, and permutation test are compared with group lasso (least absolute selection and shrinkage operator) in terms of true positive selection. Also, we applied all methods considered in simulation studies to identify genes associated with ovarian cancer from over 20,000 genetic sites generated from Illumina Infinium HumanMethylation27K Beadchip. We found a big discrepancy of selected genes between multiple group testing procedures and group lasso.