• International Journal of Highway Engineering
• /
• v.18 no.2
• /
• pp.43-49
• /
• 2016

PURPOSES : The field application and performance of continuously reinforced concrete pavement (CRCP), constructed by using the mechanical tube-feeding method, are evaluated in this study. METHODS: The location of the rebar was evaluated by using the MIRA system. The early-age CRCP performance was evaluated via visual survey, in which the crack spacing and crack width were examined. RESULTS: The location of longitudinal reinforcing bars was evaluated via MIRA testing and the results showed that the longitudinal rebars all lie within a given tolerance limit (${\pm}2.5cm$) of the target elevation. In addition, owing to the low temperature when the concrete was pured, the crack spacing in the Dae-Gu direction is slightly wider than that of the Gwang-Ju direction. Almost all of the crack spacings lay within the range of 1.0 m~3.0 m. A crack width of <0.3 mm was measured at the pavement surface. However, as revealed by the field survey, the crack spacing was not correlated with the crack width. CONCLUSIONS : In CRCP constructed by using the mechanical tube-feeding method, almost all of the longitudinal reinforcing bars lay within the tolerance limit (2.5 cm) of the target elevation. The concrete-placing temperature affects the crack spacing, owing to variations in the zero-stress temperature. Crack survey results show that there is no correlation between the crack spacing and crack width in CRCP.

• Journal of Biosystems Engineering
• /
• v.24 no.2
• /
• pp.145-152
• /
• 1999

Methods of discharging each graded agricultural product are divided into two according to the type of feeding. One is based on feeding objects using a series of specially designed holders mounted with an equal interval. The other is randomly feeding objects while being isolated without a specific interval. In this paper, a real time simultaneous discharge algorithm, which is good for objects randomly fed individually and for multi-objects located along a series of discharge buckets, was developed. And the developed algorithm was implemented to the controller and the performance was verified using the system developed for dried mushrooms. The discharge system used for the experiment was composed of a variable speed conveyor, a series of double channel bucket mounted along both sides of the conveyor, and a series of air nozzles and optic sensors. Developed algorithm worked perfectly and could be directly used for automatic discharge system for randomly feeding agricultural products.

• Journal of Welding and Joining
• /
• v.34 no.1
• /
• pp.35-40
• /
• 2016

Recent developments of Laser metal 3D deposition with wire feeding are reviewed which provide an alternative to powder feeding method. The wire feeding direction, angle and position as well as laser power, wire feeding rate, and deposition speed are found to be key parameters to make quality deposition with high throughput. When compared with the powder feed, the wire feed shows higher material efficiency, higher deposition rate, and smoother surface. Large elongated columnar grains which have epitaxial growth across deposit layers are observed in deposit cross sections. The growth direction is parallel to the thermal gradient during the deposit process. Tensile properties are found to be dependent on the direction due to the anisotropic deposit property. A real-time feedback control is demonstrated to be effective to improve the deposition stability.

• Proceedings of the KIEE Conference
• /
• 2007.07a
• /
• pp.1169-1170
• /
• 2007

The primary objective of this paper is to examine the capacity of electrical transmission in electric railway according to the type of feeding system. Although supply capacity of railway substation are sufficient and there is no accident, due to the electrical transmission limit of feeding line the voltage breakdown may occur when large capacity of electric load at feeding line exist. So, using multi-port analysis model, we draw P-V curve due to feeding method, load, location and power factor of electric locomotive.

• Women's Health Nursing
• /
• v.15 no.1
• /
• pp.5-12
• /
• 2009

Purpose: This study was done to identify that Rooming-in of new mothers have an influence on continuous breast feeding. Method: This is a comparative survey study which was done by self reported questionnaire and telephone contacts. The subjects are collected from two groups which consist of 29 in Rooming-in group and 24 in Non-Rooming in group respectively. The data were collected method of this study was lists of given to mothers while they were in the hospital and interviews by telephone were done at their home 3 months and 6 months after delivery. Result: The results of this study were as follows: 1. The rates of breast feeding were 79.3% in the Rooming-in group and 41.7% in the non-Rooming in group after 3 months. There was a statistically significant difference between the two groups ($X^2$=10.217, p=.009). 2. The rates of breast feeding were 69.0% in the Rooming-in group and 29.2% in the Non-Rooming-in group at 6 months. There was a statistically significant difference between the two group ($X^2$=10.310, p=.012). Conclusion: Rooming-in system provoke an increase of the breast feeding rate in new mothers and encourage them to keep breast feeding. In addition, it would be desirable that hospitals apply Rooming-in system actively and encourage new mothers to breast feed for 24 hours a day. It could be make breast feeding successful.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
• /
• 2002.11b
• /
• pp.92-97
• /
• 2002

There are a lot of roots of errors in an motion of the optical pick-up actuator being one of the most significant components in a CD-ROM drive. Most of the studies recently performed have a tendency to seek for the causes from an actuator itself. This paper present the dynamic characteristics of an actuator affected by the motion of a feeding deck. The feeding system is modeled as a rigid body with eight degree-of-freedom. Using Largrange's equation, we derive the linear equations of motion with respect to the rectangular coordinate. We found the fact that the ranges of the natural frequencies of a feeding deck and an actuator are close to each other. And the time responses are also computed by the Newmark method and Runge-Kutta method.

• Journal of Nutrition and Health
• /
• v.25 no.7
• /
• pp.668-683
• /
• 1992

To evaluate the current practices of the tube feeding and the status of tube feeding patient 76 adult in-patients at 6 hospitals located in Seoul and Chung-buk province were examined through reviewing patient charts observing patients and interviewing patients nurses dietitians patients' family or care-givers. The results were as follows : 1) An average age of the patients was 54.5 years with 41% over 60 years old. Patients with decreased mental status dysphagia esophageal obstruction and respiratory problem were fed by tubes. 2) The range of duration of tube feeding is between 4 days and 6 years. Most patients were received formula through nasogastric tube(89.5%) while 7.9% of gastrostomy and 2.6% of jejunostomy. Administration method for formula were bolus feeding regardless of the route of formula delivery. 3) Mean total calories received for men were 1590 kcal and 1450 kcal for female. Mean volume per meal was 282m, l and mean frequency of feeding was 5.68 while mean feeding interval 3$\frac{1}{4}$ hours and mean rate of infusion 68.4ml/min. All patients received hospital-blenderi-zed formula as the major source of nutrition. Home-blenderized formula and commercial formula as a supplement were used 35%, 13.2% respectively. 4) Thirty-eight percent of patients was hypoalbuminemia and 61% was at the moderate level of deficiency in hemoglobin. 5) Complications associated with tube feeding were diarrhea (22.4%) constipation(21.1%) vomiting(11.8%) and so on. 6) Serum albumin levels of patients who have complications associated with tube feeding were significantly lower than those of patients without complications In planning a tube feeding regimen the type of a formula must be integrated with both a delivery system and a protocol for administering the tube feeding. the multidisciplinary effort required to deliver enteral therapy is essential to improve current practices used at hospitals.

• Child Health Nursing Research
• /
• v.1 no.1
• /
• pp.16-25
• /
• 1995

The purpose of this study was to estimate primiparas' perceptions of their newborns and compare the changes of their perceptions related to feeding methods between the time I (post-partum 2nd-3rd day) and the time ll (post-partum 1st month). At the time Ⅰ, bottle-feeding method was 100% because mothers were separated from their babies. At the time Ⅱ, the methods of feeding were breast-feeding(29.7%), bottle-feeding(30.7%), mixed feeding(39.6%) .The subjects of this study were 101 primiparas. Data were collected between May to October 1994, using the Neonatal Perception Inventory devised by Broussard(1963) and added by Lee Ja Hyurg(1986) .The results of this study are as follows : 1. There was no significant difference of primiparas' perceptions of their newborns according to general characteristics. 1) The younger tended to estimate that newborns were less capable, and perceived that it would be more difficult for them to take care of babies. 2) There was no difference of mothers' perceptions of their babies according to having a job or not. 3) The lower educated tended to estimate that newborns were less capable, and perceived that it would be more difficult for them to take care of babies. 2. There were some changes of primiparas' perceptions of their babies related to feeding methods between the time I (post-partum 2nd-3rd day) and the time Ⅱ (post-partum 1st month).1) At the time Ⅰ, Breast-feeding mothers estimated that newborns were less capable, and perceived that it would be more difficult for them to take care of babies. But they showed positive perceptions at the time Ⅱ (P<0.05, p<0.1) 2) At the time Ⅰ, Bottle-feeding mothers tended to estimate that newborns were more capable, and perceived that it would be more easy for them to take care of babies. But they showed negative perceptions at the time Ⅱ 3) For breast-feeding mothers, positive-positive group was 53%, positive-negative group was 20%, negative-positive group was 10%, negative-negative group was 17%. For bottle-feeding mothers, positive-positive group was 55%, positive-negative group was 32%, negative-positive group was 10%, negative-negative group was 3%.

• Child Health Nursing Research
• /
• v.9 no.3
• /
• pp.272-284
• /
• 2003

Purpose: The purpose of this research is to provide basic informations for the encouragements of premature infants' breast feeding. Method: From August 10 to October 9, 2002, we have carried out a statical research which surveyed 148 mothers of premature infants registered in NICU. The sample had generated cluster-randomly from 25 General Hospitals, all over the Korea peninsula and being surveyed with 74 questionnaires. Result: Mean hospitalized day of premature infants was 27.9 days. The mean total feeding period was 19.1 days and continuous breast feeding period 12.4days. They were interested in breast feeding education-they answered that they would join the breast feeding education if they were given the chance 87.8％. There was significant relation between babies fed only breast milk and the body weight of birth(p<.05). The reasons why mother gave the baby her breast milk include 'for her baby's health' and 'people said breast milk is good for babies' with a portion of 99％. The main reason why mothers could not execute breast feeding was 'the deficit of breast milk volume' 50.0％ and other reason were 'because of start to support more nutritions '18.2％, 'difficulty to carry out the breast milk to hospital'13.6％. The reasen why mothers could not try breast feeding at first were 'deficit of breast milk volume'37.0％, 'not to be prepared for breast feeding because of unexpected delivery'32.6％. Conclusion: We need a program to inform importance and excellent of the breast feeding and a plan to increase the premature infants' breast feeding through the importation of fortifier.

• Journal of the Korean Society for Railway
• /
• v.9 no.6 s.37
• /
• pp.652-656
• /
• 2006

Constant load model is widely used for an electric train to perform the static analysis of AT (Auto Transformer) feeding systems. In this model, the train will be considered as a constant load model when it drives or as a constant source model when it applies regenerative brake. However there must be some constraints imposed on the pantagraph voltage in actual operations. These constraints are established for the reason of protecting the feeding facilities from excessive rise of regenerative braking voltage or guaranteeing the minimum traction power of train. In normal operating situation, the pantagraph voltage of the train should be maintained within these limits. Keeping these facts in minds, we suggest new methods or analyzing AT feeding systems using the constant power models with the conditions of voltage constraints. The simulation results from a sample system using the proposed method illustrate both the states of system variables and the supply-demand relation of power among the trains and the systems very clearly, so it is believed that the proposed method yields more accurate results than conventional methods do. The proposed methods are believed to contribute to the assessment of TCR-TSC for compensating reactive powers too.