• The KIPS Transactions:PartD
• /
• v.9D no.2
• /
• pp.243-250
• /
• 2002

In order to properly interpret and process or operators in deductive databases including indefinite clauses, we propose to use Lasez′s Strong Model Semantics(LSMS) which is reasonably simple yet powerful enough to support both exclusive and inclusive interpretations. Conventional semantics either fail to support both interpretations or simply too complex. Therefore, in this paper we study advantages and difficulties of representing indefinite information, and as for the solution to difficulties, we show how LSMS can be used to support both inclusive or and exclusive or interpretations. We also investigate and analyze it′s properties and show how it semantically differs from others. We believe that LSMS is the only "reasonably simple" semantics that supports both inclusive and exclusive interpretations.

• Journal of Fisheries and Marine Sciences Education
• /
• v.26 no.4
• /
• pp.736-748
• /
• 2014

The purpose of the study is to examine various conditions, which are recognized by teachers in the allocation of subject-specialized teachers at elementary schools, into five types of conflicts, in order to offer implications for the operation and allocation of the subject exclusive system henceforth. The study, therefore, categorized the actual allocation process experienced by subject-specialized teachers at elementary schools into five aspects the first is, understanding of students, the second, the ability to teach exclusive subjects, the third, a relationship with students, the fourth, workplace environment at schools, and the fifth, the continuity of subject specialist teachers. Conditions demonstrated in each category are classified into the types that occurred by individual and mutual roles demonstrated through in-depth, where keywords are selected by aspects to suggest conflict conditions. In order to operate the subject exclusive system more efficiently and to boost the effects of positive education, the workplace environment at schools need to be improved urgently, including a variety of training, program development, and financial support. The most vital requirement is to prepare groundwork through mutual understanding and collection of extensive opinions from field teachers based on a consensus that a school is an educational community. The study anticipates that the result could provide a foundation for the preparation of qualitative improvement and development measures for the subject exclusive system at elementary schools.

• International Journal of Highway Engineering
• /
• v.15 no.2
• /
• pp.159-167
• /
• 2013

PURPOSES : In this study, the effects of when median exclusive bus lanes were applied to Daejeon trunk road (Wolpyeng crossway~Seodaejeon crossway, 6.3km) and (Daeduck Bridge 4~Kyeryong 4, 2.6km) by Microscopic Simulation VISSIM (5.0) was studied. The median exclusive bus lanes are one of the measures of transportation system manage techniques that can especially improve the efficiency of public transportation facilities. METHODS : According to the analysis of VISSIM on the Gyerong mainroad and Daedeok mainroad, when the median exclusive bus lanes were applied unlike when the roadside bus-only lanes were applied, the average travel speed of vehicles decreased but the average delay time and travel time increased. This arised from the changes in the geometric structure of the road which occurred the reduction of vehicle lane in the center of the road. RESULTS : In the case of bus, on the other hand, the average travel speed increased but the average delay time and travel time decreased. This is because the problems such as illegal parking and stopping, secondary road in out vehicle, and conflict of intersection right turn that roadside bus-only lanes occurred was solved. CONCLUSIONS : Although the introduction of median exclusive bus lanes will have a negative effect on general traffic flow due to the aggravation of travel, decrease of passenger car usage will lead to decrease of traffic volume. Therefore, smooth vehicle travel is expected.

• Journal of Korean Society of Transportation
• /
• v.18 no.2
• /
• pp.7-16
• /
• 2000

This study Presents an guideline of the exclusive bus and/or truck lane on 8 lanes freeways using FREFLO model and INTEGRATiON model. Four alternatives : do nothing, bus exclusive lane, truck exclusive lane, bus and truck exclusive lane, were evaluated using average daily vehicle travel time as measures of effectiveness. It is found that bus and truck exclusive lane is the most effective alternative reducing total travel time by 7% when ADT is below 80,000 vehicle/day. However, when ADT is above 80,000 vehicle/day and bus Proportion is above 12%, bus exclusive lane is the most effective alternative reducing total travel time by more than 5.6%. It is further found that INTEGRATION, the stochastic and microscopic model, is more sensitive than FREFLO, the deterministic and macroscopic model, in evaluating the effectiveness of four alternatives.

• International Journal of Highway Engineering
• /
• v.14 no.2
• /
• pp.145-155
• /
• 2012

At present, Seoul City is putting the bus exclusive lane system into practice according to mass transit revitalization policy. Starting with the installation of roadside bus exclusive lane in the past, at present, even the road sections for central- lane bus exclusive lane system are on the increase. The purpose of this research is to analyze the factors giving impacts on bus accident on central bus exclusive lane and roadside bus exclusive lane. In case of the central bus exclusive lane, the 6 variables, such as the number of bus routes, number of access & entrance to central lanes patterns, whether the stop line of central lanes retreats or not, separated distance between the stop line of central lanes and crosswalks, traffic volume, and number of bus routes stopping at bus stops on reversible lanes, were found to have a significant influence on bus accidents. In case of roadside bus exclusive lane sections, the four variables such as the number of right-turn bus routes, whether to be chronic illegal parking & stopping, time for the walk signal, and forms of land use, etc. were found to have a significant influence on bus accident.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.41 no.11
• /
• pp.1443-1445
• /
• 2016

In this paper, we propose a exclusive-OR TCP coding technic imply with TCP Hybla on split PEP for enhancing the file transfer speed of the satellite communication. To evaluate performance of the proposed method, we set up a test-bed of satellite communication network. As a result of the performance evaluation, the file transmission speed enhanced more than 12% within high packet loss range. Therefore, we can expect that the proposed methodology could contribute to enhancing of data transmission speed in the satellite communication.

• Journal of Korean Academy of Nursing
• /
• v.39 no.2
• /
• pp.279-287
• /
• 2009

Purpose: The purpose of this study was to develop an antepartum-postpartum breast-feeding program titled "Breastfeeding Empowerment Program" and to measure the effects of this program on breast-feeding empowerment and the rate of exclusive breast-feeding. Methods: The study design was a nonequivalent control group design with repeated measures. Results: The scores for breast-feeding empowerment of the experimental group (EG) were higher than those of the control group (CG) at week 1, 4, 8, 12. The rates for exclusive breast-feeding of the experimental group were also higher than those of the control group: 86.4% in the EG and 40.9% in the CG at week 1; 100% vs 42.9% at week 4; 86.4% vs 38.1% at week 8; 95.5% vs 38.1% at week 12; 94.7% vs 31.6% at 6 months; 89.5% vs 26.3% at 12 months. Conclusion: The study provided evidence that raising consciousness and strengthening mother's will and skills for exclusive breast-feeding helps them to achieve successful breast-feeding by themselves. In addition mothers need to be empowered to breastfeed starting before delivery and continuing after delivery. This approach could make long-term exclusive breast-feeding successful.

• Child Health Nursing Research
• /
• v.26 no.1
• /
• pp.90-97
• /
• 2020

Purpose: The purpose of this study was to investigate the effects of a breastfeeding support program (BSP) on the prevalence of exclusive breastfeeding and growth in late-preterm infants. Methods: A quasi-experimental study was conducted. The participants were 40 late preterm infants (LPIs), of whom 20 were assigned to the experimental group and 20 to the control group. For the mothers in the experimental group, a BSP was provided prior to the LPIs' discharge and reinforced once a week for 4 weeks. Information on the feeding type was collected by observation and the LPIs' body weight was measured. Results: There were significant differences in feeding type by group and time. Exclusive breastfeeding was 5.18 times more common in the experimental group than in the control group (odds ratio=5.18, 95% confidence interval=1.11~16.70). However, weekly weight gain did not show a significant relationship with group and time (F=0.40, p=.712). Conclusion: The BSP was helpful for increasing the rate of exclusive breastfeeding in LPIs. Furthermore, the LPIs in the experimental group, which had a higher likelihood of being exclusively breastfed, showed an equivalent amount of weight gain as the LPIs in the control group, in which infants were more likely to be formula-fed.

• Women's Health Nursing
• /
• v.8 no.2
• /
• pp.257-267
• /
• 2002

This retrospective descriptive study was done to identify maternal characteristics related to infant feeding methods. Data were collected by self-report from 90 mothers who visited a health clinic in Seoul between July 30 and August 14, 2001. The mothers were classified into 3 groups according to the feeding method at 4 weeks after childbirth; Exclusive breast feeding group, Mixed breast feeding group, Bottle feeding group. Mothers using exclusive breast feeding accounted for 46.6% of the mothers, those using mixed breast feeding, 26.7%, and those using bottle feeding, 26.7%. Although the percentage of mothers using exclusive breast feeding was higher, there was no significant difference among the groups. In our research, characteristics related to the mother were found to be in a state of change. Mothers with higher education and having a job had higher rates for exclusive breast feeding. This result is different from that of earlier research. Further research is needed to confirm these characteristics. In order to increase the rate for exclusive breast feeding and the duration of breast feeding, nurses need to provide programs aimed at fostering breast feeding and these programs should be based on characteristics related to breast feeding shown in our research.

• Journal of the Korea Society of Computer and Information
• /
• v.12 no.2 s.46
• /
• pp.93-102
• /
• 2007

Firewall system is a security system for protect the network and is needed for constructing the trusted network. However, these firewall systems deteriorate the performance of whole network in about 60% because of Inefficiency policy establishment and unnecessary traffic occurrence. Therefore, there is a strong needs to establish the network performance elevation, efficient operation and reassignment of the firewall system. In this dissertation, we will analyze how each functionalities of the firewall system affect to the network performance via using a simulation result according to functionality of the firewall system and propose a exclusive firewall system for the efficient network operation.