• 한국정밀공학회지
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• 제15권12호
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• pp.37-47
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• 1998

This study discusses the feed dog feeding mechanism of an industrial lock stitch sewing machine, which is a good example to study a machine kinematics. The feed dog feeding mechanism makes the fabrics directly be fed by an elliptic motion of the feed dog that is moved by a rotation of the top shaft and controlled by the feeding control mechanism. This study makes mathematical expressions of machine's motion in the feed dog feeding mechanism. Thus, the motions of this mechanism are characterized, namely how an elliptic motion of the feed dog is affected by the feeding control mechanism. Therefore, the above mathematical expressions may be a basis for the new design of the feed dog feeding mechanism and may be adapted to analysis. Development of the similar feed dog feeding mechanism can be applied to other type sewing machine.

• 한국정밀공학회지
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• 제15권12호
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• pp.48-54
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• 1998

In sewing, fabrics is fed by an elliptic motion of the feed dog. The feeding control mechanism controls an elliptic motion of the feed dog, finally, controls stitch spacings and feeding directions of fabrics. This study discusses the feeding control mechanism of an industrial lock stitch sewing machine, which is a good example to study a machine kinematics. This study makes mathematical expressions of machine's motion in the feeding control mechanism. Thus, the motions of this mechanism are characterized, which will be used for kinematic analysis of the feed dog later. Also, the above mathematical expressions may be a basis for the new design of the feeding control mechanism and may be applied to development of the similar feeding control mechanism of other type sewing machine.

• Journal of Welding and Joining
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• 제31권4호
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• pp.13-16
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• 2013

In this research, laser cladding characteristics were investigated for various filler metal feeding methods such as powder, cold wire, and hot wire feeding. Appropriate parameter window, deposition rate, material efficiency and dilution for each filler feeding method were evaluated with same laser power and cladding speed range. Laser powder cladding has wider process parameter window but higher material efficiency and lower dilution were achieved by laser wire cladding. Among these feeding methods, laser hot-wire cladding showed best efficiency in material usage and deposition rate.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 제36회 하계학술대회 논문집 B
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• pp.1619-1621
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• 2005

AC electric railway feeding system classifies into three groups such as normal, TIE and PP feeding method. If the feeding scheme of ac electric railway is changed, current distribution flowing through the line is also modified. And if the current distribution is altered according to the feeding scheme, returned tendency through rail load current or fault current of the train is changed. So the investigation about error correcting method of protective relay is needed considering feeding scheme. In this paper prior to error correcting of protective relay, through interpreting feeding circuit, changes in current distribution of the rail in accordance with feeding would be predicted and analyzed.

• Journal of Nutrition and Health
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• 제26권4호
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• pp.423-432
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• 1993

Feeding mode and evacuation pattern of 9 breast-fed(BF) infants and 22 formula-fed(FF) infants were monitored at 1, 2 and 3 months postpartum in Korea. The daily feeding volume to the BF infants was significantly less than that to the FF infants at 2 and 3 months postpartum. And the daily feeding voloume to the BF infants decreased significantly with age, whereas that to the FF infants increased significantly. These data indicated that the frequency of daily feeding decreased with age in bofy infants' intake per feeding increased whereas the BF infants' did not. As a result, the BF infants could not adjust their intakes. The frequency of daily evactation of the BF infants was higher than that of the FF infants, but the amount of daily evacuation of the BF infants was less than that of the FF infants.

• Asian-Australasian Journal of Animal Sciences
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• 제29권2호
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• pp.159-169
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• 2016

The goats raised in the barn are usually fed on fresh grass. As dry forage can be stored for long periods in large amounts, dry forage feeding makes it possible to feed large numbers of goats in barns. This review explains the physiological factors involved in suppressing dry forage intake and the cause of drinking following dry forage feeding. Ruminants consume an enormous amount of dry forage in a short time. Eating rates of dry forage rapidly decreased in the first 40 min of feeding and subsequently declined gradually to low states in the remaining time of the feeding period. Saliva in large-type goats is secreted in large volume during the first hour after the commencement of dry forage feeding. It was elucidated that the marked suppression of dry forage intake during the first hour was caused by a feeding-induced hypovolemia and the loss of $NaHCO_3$ due to excessive salivation during the initial stages of dry forage feeding. On the other hand, it was indicated that the marked decrease in feed intake observed in the second hour of the 2 h feeding period was related to ruminal distension caused by the feed consumed and the copious amount of saliva secreted during dry forage feeding. In addition, results indicate that the marked decreases in dry forage intake after 40 min of feeding are caused by increases in plasma osmolality and subsequent thirst sensations produced by dry forage feeding. After 40 min of the 2 h dry forage feeding period, the feed salt content is absorbed into the rumen and plasma osmolality increases. The combined effects of ruminal distension and increased plasma osmolality accounted for 77.6% of the suppression of dry forage intake 40 min after the start of dry forage feeding. The results indicate that ruminal distension and increased plasma osmolality are the main physiological factors in suppression of dry forage intake in large-type goats. There was very little drinking behavior observed during the first hour of the 2 h feeding period most water consumption occurring in the second hour. The cause of this thirst sensation during the second hour of dry forage feeding period was not hypovolemia brought about by excessive salivation, but rather increases in plasma osmolality due to the ruminal absorption of salt from the consumed feed. This suggests the water intake following dry forage feeding is determined by the level of salt content in the feed.

• Journal of Biosystems Engineering
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• 제38권4호
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• pp.295-305
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• 2013

Purpose: Recent research showed that total mixed ration (TMR) feeding for pigs improved the productivity and reduced feed cost and manure odor. An automatic TMR feeding system was developed for this study because the conventional feeder cannot deliver the TMR containing roughage. Methods: Conventional feeding systems and physical properties of TMR were surveyed, and performance tests of the conventional feeder were conducted to develop a TMR feeder. Based on the TMR feeder was developed and installed, driving, measuring weight, radio frequency identification (RFID) reading, and discharging test for feeding were conducted to ensure the performance. Results: Moisture content, density, and angle of repose of the TMR 1 (mixture of 30% cut IRG silage and 70% concentrates) were 31.6%, 387 $kg/m^3$, and $51^{\circ}$, respectively. Moisture content, density, and angle of repose of the TMR 2 (mixture of 45% concentrates, 30% cut IRG silage and by-products, 10% bean curd refuse, 10% others, and 5% fermenter) were 22.2%, 544 $kg/m^3$, and $50^{\circ}$, respectively. The coefficient of variation (C.V.) of conventional concentrate feeding were 1.9~4.1%, and C.V. of TMR containing 1~3% cut IRG roughage feeding by conventional feeder were 9~42%. The conventional disc type feeder was not suitable for TMR feeding because the supply unit was clogged. The C.V. of TMR 1 was 0.6~7.9% when 0.5~10 kg of the TMR supplied, and it was suitable for feeding grow-finish pigs and sows. On the contrary, the C.V. with TMR 2 was 28% when 0.5 kg of the TMR supplied, and it was not suitable for feeding sows. Conclusions: The TMR feeder developed in this study was suitable for feeding grow-finish pigs because the feeder performed stably with over 5.0 kg feed. However, the feeder showed a lack of accuracy for feeding sows because the amount of each feed was more than 0.5 kg per a feeding. Therefore, the improvement of outlet structure for accurate feeding is needed for sow feeding.

• 한국산학기술학회논문지
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• 제14권7호
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• pp.3310-3318
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• 2013

본 연구의 목적은 개별적 모유수유증진 프로그램이 모유수유 태도와 모유 수유 실천에 미치는 효과를 검정하고자 시행되었다. 연구 설계는 비동등성 대조군 전후 시차설계의 유사 실험 연구로, 연구 기간은 2011년 6월 1일부터 9월 30일까지 이었다. 참여자는 일개 모자보건센터에 산전관리를 위해 내원한 임신 32주 이상의 임신부 64명(실험군; 32, 대조군; 32)을 대상으로 하였다. 수집된 자료는 SPSS 프로그램을 이용하여 빈도, 백분율, $x^2$-test와 t-test로 분석하였으며, 결과는 다음과 같다. 개별적 모유수유증진 프로그램을 제공 받은 실험군은 대조군보다 모유수유 태도 점수와 모유수유 실천율이 더 높았고, 시간 경과에 따른 두 그룹 간 모유수유실천 정도는 통계적으로 유의한 차이가 있었다. 결론적으로, 본 연구에서 사용한 개별적 모유수유 증진 프로그램은 모유수유 태도를 변화시키고, 모유수유 실천율 상승을 위한 효과적인 간호중재인 것으로 확인되었다.

• Child Health Nursing Research
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• 제1권1호
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• pp.16-25
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• 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%.

• Asian-Australasian Journal of Animal Sciences
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• 제17권8호
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• pp.1150-1157
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• 2004

This experiment was conducted to investigate effects of phase feeding and sugar beet pulp (SBP) on growth performance, nutrient digestibility, nitrogen excretion, blood urea nitrogen (BUN) concentration and carcass characteristics in finishing pigs. A total of 128 pigs were allotted at 53.9 kg BW to 8 replicates in a 2$\times$2 factorial arrangement in a randomized complete block (RCB) design. The first factor was phase feeding (2 or 3 phase feeding) and SBP (SBP: 0% or 10%) was the second factor. Ten percent SBP supplement groups showed lower average daily feed intake (ADFI) than 0% SBP supplement groups (p<0.05). However, there were no significant difference in average daily gain (ADG) and feed:gain ratio among treatments during overall experimental period. Nutrient digestibility was not affected by phase feeding or SBP supplementation. Urinary nitrogen excretion in 10% SBP supplement group was lower than that in 0% SBP supplement group (p<0.05) and total nitrogen excretion was lower in SBP supplement group than in the group without SBP. Urinary and total nitrogen were numerically decreased in three phase feeding compared to two phase feeding. The BUN concentration in three phase feeding groups was lower than two phase feeding groups at 47 and 63 day (p<0.05). Consequently, results of this experiment demonstrated that three phase feeding was more acceptable than two phase feeding for finishing pigs. And sugar beet pulp could be supplemented in finishing pig diet for decreasing urinary nitrogen excretion without retardation in growth performance of pigs.