• Journal of Korea Society of Industrial Information Systems
• /
• v.14 no.4
• /
• pp.65-74
• /
• 2009

The risk of health impairment due to poor ventilation, fire and explosion by inflammable materials, and other unintended occurrences is always present in dangerous workplaces such as manholes, underground septic tanks, storage tanks and confined areas. Therefore, it a system which can monitor harmful working environment through sensors in workplace on a realtime basis and keep workers safe from the risk is needed. This paper has attempted to design an inference engine to monitor harmful environments in the workplace. The proposed inference engine has a rule-based system structure using JESS. This system is not confined to a particular computing platform and is easily interlocked with OSGi-based middleware.

• Journal of the Korean Home Economics Association
• /
• v.37 no.7
• /
• pp.69-81
• /
• 1999

The purpose of this study was to evaluate food behavior in relation to the program of kindergarten and day care center as well as to identify problems which can be aroused there. We conducted the survey repeatedly, ten times among same 124 preschool children below 5 years old. The instruments were categorized into 3 different parts: part 1 for pre-meal food behavior, part 2 for mid-meal food behavior, and part 3 for after-meal food behavior. These were types of checklists which consisted of guideline of habit formation for daily life, especially food habit were developed on the basis of the National Kindergarten Curriculum. We Have reached the following results. $\circled1$ The group of below 3 year-old children had lunch and snacks more frequently than other age groups. $\circled2$ The children's age did playa role as one of the factors which influences on children's food behavior. The less frequency of taking meals in day care center the better their food behavior score. $\circled3$ Therefore, the age of children whose age is 3 or Jess spent more (of day) time at care center and had significantly more number of meals and snack at the care center. In such case, the food behavior was found to be not in good shape. I-ence, the children who were more exposed to feeding meal in kindergarten and day care center, were like to form unfavorable food behavior. The average food behavior score is significantly correlated with pre-mea, mid-meal, and post-meal food behavior. The study suggested that feeding program for young children at kindergarten and day care center should be systematized and developed on the basis of the status of their food behavior.

• Journal of the Korean association of regional geographers
• /
• v.13 no.1
• /
• pp.68-81
• /
• 2007

The purpose of this study was to analyze the perceptions of local residents towards the impact of Geumsan ginseng festival. This study was trying to examine the perception differences between groups of resident by tourism relatedness. Self-administered questionnaire survey was administered for the Geumsan residents. Frequency analysis, factor analysis, regression analysis, and t-test was administered for the perception differences. Using social exchange theory, it was revealed that tourism relatedness was relatively useful to test the perceptions differences of residents towards festival impacts. Tourism related residents perceived positive impacts more strongly and negative impacts Jess strongly compare to non related residents. The result suggested that residents' perception of festival impacts was dependent on the level of tourism relatedness and implications are drawn for community tourism policy and management.

• Journal of Plant Biology
• /
• v.20 no.2
• /
• pp.91-101
• /
• 1977

Using barley seeds (Hordeum sativum Jess, var.), the influences of gibberellic acid (GA) and indole-3-acetic acid(IAA) on the amylase synthesis and that of the nucleic acid metabolism were investigated. 1. With the deembrynized barley seeds, the increase of amylase treated with a $10^{-5}M$ of GA and the decrease of amylase treated with $10^{-5}M$IAA were matched by a proportionate increase and decrease in the amount of RNA. The influence of the hormones on the RNA synthesis has appeared immediately after the treatment but on the amylase synthesis it has appeared 8 hours later. But no influence on the DNA synthesis was observed on both hormones. 2. The amylase from deembryonized barley seeds treated with GA and IAA have been fractionated by gel filteration on Sephadex G-100. The amylase components showed four fractions on both enzymes treated with GA and IAA. Fraction I(FI) was differed from fraction Ⅵ(FIV) in Km value and the effects of temperature, pH and metal ions. On the basis of their emzymatic properties, it was considered that the FI was $\beta$-amylase and FIV was $\alpha$-amylase. The influences of GA and IAA on each fractions appeared to be similar but on the amylase units per souble protein, IAA inhibited the production of amylase FIV while it promoted that of amylase FI. 3. An experiment was conducted to determine whether IAA inhibits GA-promoted amylase synthesis competitively or non-competitively. Using a Lineweaver-Burk plot, it was clear that IAA was acting in a non-competitive fashion. From this, IAA was probably not competing with GA at the same site, but it was acting at some other site which resutled in partial blocking of the action of GA on the amylase synthesis.

• Journal of the Korean Arthroscopy Society
• /
• v.1 no.1
• /
• pp.116-122
• /
• 1997

We have studied the results of reconstruction by freeze-dried patellar allografts or patellar autografts in ACL-deficient patients prospectively. From January 1995 to December 1995, we performed ACL reconstruction using an arthroscopic-assisted technique with patellar autografts in 21 patients and patellar allografts in 13 patients. Minimum followup time was 1 year(average 26 months). All patients were evaluated by using KT-2000 arthrometer and MRI as well as by physical examination. Final results were rated as satisfactory or unsatisfactory by using a modified Feagin knee scoring scale. Good or excellent were considered to have satisfactory results and fair or poor were considered to have unsatisfactory results. As measured by the KT-2000, 19 cases$(90.5\%)$ had a 5-mm or Jess side-to-side differential, a satisfactory results in autograft group, 2 cases of unsatisfactory results had joint instability. In allograft group, 10 cases$(76.9\%)$ had a 5-mm or less side-to-side differential, a satisfactory results, 3 cases of unsatisfactory results had joint instability including postoperative infection(1 case). In conclusion, the results of ACL reconstruction with autografts were better than those with allografts. The problem of allograft reconstruction were rehydration, aseptic control and improper mechanical tensioning. So, we thought that success of allograft reconstruction was depended on careful implant preparation including pretensioning technique.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2008.10a
• /
• pp.340-347
• /
• 2008

Ubiquitous services are high quality and differentiated services which are provided for users by recognizing the context of users and environmental conditions actively. In this case, context-aware middleware is one of the most important technologies required to implement the ubiquitous services. In this paper, we propose a method for providing ubiquitous services in a specific user space effectively and monitoring human bio-sensors. That is, the design and implementation of intelligent home service middleware and monitoring bio-sensors based on context awareness is discussed here. Context information from various sensors is gathered, and suitable services are inferred and provided to users by the middleware system. In our approach, user services can be modelled easily by using facts and rules, and the system can be extended easily to support various ubiquitous services other than intelligent home services also. The system can be integrated with external applications and legacy systems effectively by using various protocols such as RMI, socket and HTTP, XML and etc. We have designed and evaluated various facts and rules for intelligent home services in real environments. Functionality evaluation with the system shows that ubiquitous services can be provided to users effectively in a home environment.

• Journal of Advanced Marine Engineering and Technology
• /
• v.38 no.6
• /
• pp.744-750
• /
• 2014

The monitoring and abnormality warning of marine diesel engine are important to take appropriate responses for safety navigation. If maintenance engineers do not take appropriate response because of diagnosis mistakes, it will occur a nasty accident. Therefore, we need integrated monitoring and diagnosis system for supporting a diagnosis objectively. In this paper, we analyze time-series data which measured by real-time, monitor the changing of conditions and trends of the analyzed data. Furthermore, we design and implement a monitoring and diagnosis system for objective supporting of real-time diagnosis. When the integrated monitoring and diagnosis system is adopted, it can help to improve stability of marine diesel engine by providing abnormality warning alarm with appropriate responses.

• Journal of Korean Ophthalmic Optics Society
• /
• v.7 no.1
• /
• pp.1-8
• /
• 2002

Various kinds of aerosols such as a mixture of hairspray resin and its solvents, a perfume, a soap water, and ask in-lotion were sprayed onto the contact lens which was mounted on the eye-model made of wood, varying the parameters as the distance between nozzle and contact lens and the spraying time duration. In the case of both the hairspray and the perfume including an ethanol as solvents, the shape of contact lenses has changed tremendously Jess than 1 minute after the exposure to the aerosol particles and then it continued until the lens surfaces were completely flipped over. Driving force for the lens distortion seems to be the expansion coefficient difference between the inner and outer surface of lens, which was caused by the heat of vaporization of ethanol included in the aerosol and subsequent temperature decrease induced on the lens surface.

• Journal of Korean Foot and Ankle Society
• /
• v.2 no.2
• /
• pp.57-63
• /
• 1998

Stress or march fractures among military personnel, especially recruits, has been appreciated for many years. According to the classical references, the second metatarsal was one of the first sites identified as a focus for march fractures and radiological evidence of fracture appeared as late as several weeks. The purpose of this study was to document the clinical feature of march fractures in Korean infantry soldiers. From 1997 to 1998, at one infantry medical company of OO infantry corps in Korea, 15 (19cases) patients with march fracture were detected among infantry soldiers. There were some different finding in the fracture site and its clinical features from the previous foreign reports. 1. There were pain and local swelling in all cases as clinical manifestation. By physical examination, direct point tenderness on the location of the fractured metatarsal shaft was characteristic. 2. On roentgenographic examination, cortical fissuring or break was seen one week after onset of symptoms and external callus was seen from two weeks or at the least four weeks. Oblique view was more useful than AP view in the diagnosis of march fractures. 3. The third metatarsal was the most frequently involved site(7 cases, 48%). and the second metatarsal was Jess frequent(3 cases, 20%). This difference of frequent site with previous reports might be attributed to the relatively long shaft of the third metatarsal, but should be analyzed in further study. 4. The incidence of the development of march fracture was 1 per 104 infantry soldiers.

• Journal of the Korean Wood Science and Technology
• /
• v.12 no.2
• /
• pp.3-9
• /
• 1984

This study was carried out to examine the practicality of DAP[$(NH_4)_2HPO_4$] as fire retardant for plywood by static bending test the redried plywoods which had been soaked in 20% $(NH_4)_2HPO_4$ solution. Being hot/cold soaked in the solution for 3/3, 6/3, 9/3 and 12/3 hours and redried by cyclic press-drying method at the platen temp. of 130, 145, 100 and $175^{\circ}C$, the treated plywoods were tested to offer the mechanical data, that is, $S_{pl}$(stress at proportional limit), MOE(modulus of elasticity), MOR(modulus of rupture) and $W_{pl}$(work per unit volume to proportional limit ) in flexure. The results obtained were summarized as follows. 1. $S_{pl}$ of fire retardant treated plywoods ("FRP" would be used hereinafter) decreased as the platen temperature increased, but it was superior to that of non-treated plywoods(Control) at $160^{\circ}C$ or higher. 2. MOE of FRP decreased roughly with the increase of temperature, hut this tendency was not constant. And the value of FRP was higher than that of Control even at $175^{\circ}C$. 3. MOR of FRP showed same temperature-dependent tendency as MOE, but it was influenced more sensitively at the higher temperature. 4. $W_{pl}$ of FRP also decreased gradually with the increase of platen temperature and the value in DAP 9/3 treatment was Jess than 70% of control plywoods. 5. In view of redrying time and mechanical properties, the most reasonable platen temperature for DAP treated FRP was $160^{\circ}C$ in this study.