Seoul, South Korea
Seoul, South Korea

Sahmyook University is a private, Christian, coeducational university located in Metropolitan Seoul, South Korea. Sahmyook University is part of a worldwide network of Seventh-day Adventist institutions of higher education providing an environment for learning that emphasises individual commitment to Christ, personal integrity, intellectual development, and community service. The school was founded in 1906 as Euimyung College in Sunahn, Pyeongan-namdo in what would become today's North Korea. It was the first higher education facility started in Korea, and is today the largest university owned by the Seventh-day Adventist Church.In 2009, the university had 6 colleges, including the College of Theology, Humanities & Social Science and Health Science & Social Welfare in addition to 4 graduate schools. There are 216 full-time faculty teaching 5,566 undergraduate students and 189 graduate students. Wikipedia.


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Chung E.,Andong Science College andong | Lee B.-H.,Sahmyook University | Hwang S.,Baekseok University
Restorative Neurology and Neuroscience | Year: 2014

Objective: The purpose of this study was to examine the feasibility of core stabilization exercise with real-time feedback on balance and gait function in patients with chronic hemiparetic stroke. Methods: Nineteen stroke subjects were enrolled in this study. The patients were randomly divided into the experimental (n = 10) and control groups (n = 9). Subjects in the experimental group performed core stabilization exercise with real-time feedback training for 30 minutes per day during a period of six weeks. Subjects in the control group performed core stabilization exercise during the same period. This study assessed the kinematic parameters using a portable walkway system, and timed up-and-go test. Results: Gait velocity showed significantly greater improvement in the experimental group (7.3 ± 5.0 sec) than in the control group (-0.7 ± 10.6). Stride length showed significantly greater increase in the experimental group (13.2 ± 7.9 on the affected side and 12.6 ± 8.0 on the less affected side) than the control group (3.5 ± 8.7 on the affected side and 3.4 ± 8.5 on the less affected side). After training, change in results on the timed up and go test was significantly greater in the experimental group than in the control group. Conclusion: Core stabilization exercise using real-time feedback produces greater improvement in gait performance in chronic hemiparetic stroke patients than core stabilization exercise only. © 2014 - IOS Press.


News Article | January 22, 2016
Site: motherboard.vice.com

There is a sleep deprivation epidemic going on in the United States. According to the Center for Disease Control and Prevention, roughly one-third of the US adult population is sleep deprived. While prescription sleep aids have been shown to be effective for helping people get a good night’s rest, they also can come with a number of troubling side effects, which depending on the chemical composition of the sleep aid might range from dependency to sleep eating. These unwanted side effects have led to increasing interest in natural sleep aids, one of the more bizarre of which is known as night milk. “The epidemic of sleep deprivation has been going on for a long time,” said Bryce Mander, a neuroscientist at UC Berkeley's Sleep and Neuroimaging Lab. “I think longer work hours and stagnant wages are major contributors, [and] chronic stress probably fuels increases in insomnia rates. Regardless, people are sleeping less, and this is fueling the need for anything that can help them manage their excessive daytime sleepiness.” This desperation for a good night's sleep is probably what led to increased interest in sleep aids such as night milk, which as its name suggests, is milk that is collected from cows at night. More than just a superstition or a rehashing of the old home remedy of drinking a bowl of warm milk before bed, recent research has shown that milk taken from cows at night has significantly higher levels of tryptophan and melatonin, substances long known to promote and enhance sleep. In a study published in December in the Journal of Medicinal Food, researchers from Sahmyook University in Seoul, South Korea dosed a group of mice and rats with night milk, and found that the effects of the night milk on the rodents was comparable to the effects of diazepam (first marketed as Valium), a drug known for its sedative effects. The researchers used four groups of rodents, one of which was given night milk, another given day milk, a group dosed with Diazepam, and a control group that just drank water. Over the course of their experiments, the researchers had the rodents perform a number of tasks, such as running on a wheel and navigating a maze. Of course, the duration and quality of the rodents’ sleep was also monitored. According to the study, mice dosed with night milk were less inclined to explore during an open field test, which the team believes reflects reduced central nervous system activity and the sedative effect of the milk. Furthermore, when the mice dosed with night milk ran on a wheel, they demonstrated decreased motor balance and coordination. Both of these effects were similar to those exhibited by the rodents under the influence of diazepam. “In the present study, we have found that Night milk, but not Day milk, produces sedative…effects in mice,” the team wrote. “The effects of Night milk were comparable to that induced by the benzodiazepine, diazepam. These findings suggest that Night milk might be an effective natural sleep aid for managing sleep-related disturbances and a promising alternative for the treatment of anxiety disorders.” Night milk hasn’t been tested much on humans (a 2005 study involved giving melatonin rich night-time milk to elderly patients with positive results, however), but this recent study with mice appears to bode well for a future in which natural sleep aids replace their pharmaceutical counterparts. Others, such as Jennifer Martin, an associate professor at UCLA’s School of Medicine and member of the American Academy of Sleep Medicine’s board of directors, are less certain about its potential to replace pharmaceutical sleep aids. “Night milk appears to have higher levels of tryptophan, [so] it theoretically could increase the levels of melatonin,” said Martin. “However, melatonin is not an active ingredient in pharmacological sleep aids, and melatonin itself has not been shown to improve insomnia. Since the mechanism of action is not the same, it doesn’t seem likely that night milk will replace pharmacological sleep aids.” Nevertheless, a few companies have apparently seen some promise latent in night milk and have begun marketing night milk powders as a sleep aid. The first such company was the German-based Nacht-Milchkristalle, which patented its night-milk crystals back in 2010. In order to encourage the production of night milk that is high in tryptophan and melatonin, the farmers for Milchkristalle have taken to milking their cows between 2 and 4 AM, in addition to feeding the bovines a diet high in clover, which itself contains high levels of tryptophan. The tryptophan and melatonin rich milk produced by the cows is then dehydrated, resulting in night milk crystals which can be added to other drinks or foods such as yogurt to be consumed before hitting the hay. The main problem faced by Milchkristalle is that milking the cows at night can lead to a stress response in the animals because they are not used to that milking schedule. This stress response can then lead to severely decreased levels of tryptophan and melatonin in the resulting milk, thereby undermining the entire process. In order to circumvent this dilemma, the dairy farmers at Milchkristalle alter the lighting for the cows at night, bathing them in soft warm lights, which relaxes the animals and allows them to produce milk with increased levels of tryptophan and melatonin. Yet in defense of the practice of collecting night milk, Heiko Dustmann, an agricultural engineer involved in Milchkristalle’s night milk research, told the Guardian,"The animals even benefit from the new product with light during the day, soft lighting at night, which helps them to sleep better and enables them to produce more milk." When you buy milk at the store, there’s a pretty good chance that it was collected from cows during the day, when most dairy farms operate. Although cows milked during the day may also be subjected to relaxation techniques such as listening to soothing music while they are milked, even in the off chance they get milked in the early evening their milk is still likely to contain less melatonin than that produced by Milchkristalle’s cows. According to Tony Gnann, Milchkristalle’s company manager, this is both because the night milk is diluted with milk produced during the day and the confusion brought about by being milked at night will also lead the cows to produce milk that is unusually low in melatonin. In order to produce the melatonin and tryptophan rich milk marketed by Milchkristalle, it was necessary to switch the cows to an exclusively night milking schedule (to lower confusion/stress levels from the routine change) and adjust the lighting accordingly. "Conditions for the cows have to be just right – light in the day and very low light conditions at night," said Gnann. Unfortunately, night milk proves hard to find, at least for now. Since I am located abroad, I asked Motherboard contributor Rachel Pick to try her hand at finding night milk in the US. "Aside from the Milchkristalle team, I couldn't find any solid leads to finding night milk either in the US or anywhere else,” Pick told me. “A product called 'Goodnight Milk' was a false start—turns out it's just a baby formula that claims to have a naturally soporific effect on infants, but isn't actually made from milk produced at night. What I did find was a lot of news coverage and hype about the potential of night milk, without any suggested means to obtaining the product itself." Pick’s observation played out for me as well in my quest to find night milk outside of the US. Of the two vendors I found online, a UK vendor hadn’t been producing the stuff since the mid aughts and the German vendor Milchkristalle GmBH didn’t respond to my requests comments. Which is all to say that despite the hype, night milk might not even be available commercially at the moment. Since it appears that night milk may not become the panacea for America’s sleepless nights remains any time soon, most sleep researchers agree that rather than waiting for a better sleep aid, it’s more important to change the behaviors that lead to sleep deprivation in the first place. “There was a media blitz about melatonin in the 1990s that was completely unjustified scientifically,” said Mander, who remains skeptical of any ‘cure all’ approaches to sleep. “There is a great body of work on multiple types of sleep drugs and there is starting to be some work on alternative sedatives that some consider more "natural,"[but] the truth is that it is much more difficult to find any aids that reproduce what your body does naturally.” This opinion is buoyed by Martin, who recommended cognitive behavioral therapy, which she claims is now considered the best available treatment for insomnia, treating the disorder as well as, if not better than, sleeping pills. “Exploring new options and developing safe and effective ways to help people with insomnia to sleep better is always beneficial,” said Martin. “Clearly research with humans is needed to determine whether Night Milk can be used in this way in humans. At this point, it’s important that anyone who has insomnia lasting more than three months...seeks medical care either from a primary care provider or a sleep specialist [who] can help patients to identify what is causing their sleep problems and then can recommend the best options for improving sleep.”


Lee H.S.,Sahmyook University
Journal of Internet Banking and Commerce | Year: 2010

The purpose of this paper is to verify the relationships among service quality, perceived value, customer satisfaction, and customer loyalty in mobile phone service. The study conducted an empirical research. A total of 384 mobile phone users' responses were collected from Seoul in Korea. The findings show that service quality positively influences customer loyalty. In addition, perceived value and customer satisfaction positively affects customer loyalty respectively. For customers with high perceived service quality, perceived value, and satisfaction, they have a strong loyalty. © Hyung Seok Lee, 2010.


Kim H.G.,Sahmyook University
Proceedings - 16th IEEE International Conference on Computational Science and Engineering, CSE 2013 | Year: 2013

Sliding window equijoins are commonly used in data stream applications. In their implementation, a hash table is generally allocated for each stream source. However, this structure may degrade join performance because all tuples in the hash tables need to be scanned to find expired tuples whenever windows are updated periodically. This paper presents an alternative structure to improve the performance of sliding window equijoins. The basic idea of the proposed method is to allocate a hash table for each set of tuples arriving for a window slide interval. This organization facilitates the identification of expired tuples and improves the join performance, which we observed through our experimental results. © 2013 IEEE.


Kim J.-H.,Sahmyook University | Lee B.-H.,Sahmyook University
NeuroRehabilitation | Year: 2013

OBJECTIVE: The objective of this study was to compare the effects of action observation training and motor imagery training on recovery from chronic stroke. METHODS: Thirty patients who were more than six months post stroke participated in this study and were randomly allocated to three groups. The action observation training group practiced additional action observation training for five 30-minute sessions over a four-week period. The motor imagery training group practiced additional motor imagery training for five 30-minute sessions over a four-week period. The following clinical measures were used for assessment of dynamic balance and gait abilities: Timed Up and Go Test, Functional Reaching Test, Walking Ability Questionnaire, and Functional Ambulation Category. Spatiotemporal gait parameters were also collected using a GAITRite system. RESULT: Compared with the physical training group, the action observation training group showed significant improvement in the Timed Up and Go test, gait speed, cadence, and single limb support of the affected side. No significant differences in any of the outcome measures were observed between the action observation training group and the motor imagery training group. CONCLUSION: Action observation training and motor imagery training results in improvement of dynamic balance and gait ability. These results suggest the feasibility and suitability of action observation training for patients with chronic stroke. © 2013 - IOS Press and the authors. All rights reserved.


Cho K.H.,Sahmyook University
American journal of physical medicine & rehabilitation / Association of Academic Physiatrists | Year: 2013

The purpose of this study was to investigate the effectiveness of the virtual walking training program using a real-world video recording on walking balance and spatiotemporal gait parameters in patients with chronic stroke. Fourteen patients with chronic stroke were randomly assigned to either the experimental group (n = 7) or the control group (n = 7). The subjects in both groups underwent a standard rehabilitation program; in addition, the experimental group participated in the virtual walking training program using a real-world video recording for 30 mins a day, three times a week, for 6 wks, and the control group participated in treadmill gait training for 30 mins a day, three times a week, for 6 wks. Walking balance was measured using the Berg Balance Scale (BBS) and the Timed Up and Go test. Gait performance was measured using an electrical walkway system. In walking balance, greater improvement on the Berg Balance Scale (experimental group: 4.14 vs. control group: 1.85) and the Timed Up and Go test (-2.25 vs. -0.94) was observed in the experimental group compared with the control group (P <; 0.05). In the spatiotemporal gait parameters, greater improvement on velocity (25.40 vs. 9.74) and cadence (26.71 vs. 11.11) was observed in the experimental group compared with the control group (P <; 0.05). This study demonstrated the positive effects of the virtual walking training program using a real-world video recording on gait performance. These findings suggest that the virtual walking training program using a real-world video recording may be a valid approach to enhance gait performance in patients with chronic stroke.


Lee S.,Sahmyook University | Shin S.,Sahmyook University
Diabetes Technology and Therapeutics | Year: 2013

Background: Diabetes in elderly adults is associated with an increased risk of fall. The aim of study was to determine whether a virtual reality exercise (VRE) program would improve balance, strength, gait, and falls efficacy in elderly adults with diabetes. Subjects and Methods: Fifty-five subjects with diabetes mellitus over 65 years of age were randomly assigned to a VRE group (VREG) (n=27) and a control group (CG) (n=28). The VREG received the VRE program and diabetes education, whereas the CG received only the diabetes education. The VRE program used video gaming (PlayStation® 2; Sony, Tokyo, Japan) and was conducted for 50 min twice a week for 10 weeks. Balance, muscle strength, gait, and falls efficacy were measured at baseline and after intervention. Measurements were taken using a clinical tests (the one-leg-standing test, the Berg Balance Scale, the functional reach test, the timed up-and-go test, and the sit-to-stand test), and gait analysis. A self-administered questionnaire was used to measure falls efficacy. Results: After training, the VREG showed significantly improved balance, decreased sit-to-stand times, and increased gait speed, cadence, and falls efficacy. Conclusions: The VRE program was to maximize the effects of exercise by triggering players was to be fully immersed into the games and enhanced major influential factors on the falls of subject. This study suggests VRE programs are feasible and effective for reduced the risk of falls in elderly adults with type 2 diabetes. © Copyright 2013, Mary Ann Liebert, Inc. 2013.


Cho K.H.,Sahmyook University | Lee W.H.,Sahmyook University
American Journal of Physical Medicine and Rehabilitation | Year: 2013

Objective: The purpose of this study was to investigate the effectiveness of the virtual walking training program using a real-world video recording on walking balance and spatiotemporal gait parameters in patients with chronic stroke. DESIGN: Fourteen patients with chronic stroke were randomly assigned to either the experimental group (n = 7) or the control group (n = 7). The subjects in both groups underwent a standard rehabilitation program; in addition, the experimental group participated in the virtual walking training program using a real-world video recording for 30 mins a day, three times a week, for 6 wks, and the control group participated in treadmill gait training for 30 mins a day, three times a week, for 6 wks. Walking balance was measured using the Berg Balance Scale (BBS) and the Timed Up and Go test. Gait performance was measured using an electrical walkway system. RESULTS: In walking balance, greater improvement on the Berg Balance Scale (experimental group: 4.14 vs. control group: 1.85) and the Timed Up and Go test (-2.25 vs. -0.94) was observed in the experimental group compared with the control group (P <; 0.05). In the spatiotemporal gait parameters, greater improvement on velocity (25.40 vs. 9.74) and cadence (26.71 vs. 11.11) was observed in the experimental group compared with the control group (P <; 0.05). CONCLUSIONS: This study demonstrated the positive effects of the virtual walking training program using a real-world video recording on gait performance. These findings suggest that the virtual walking training program using a real-world video recording may be a valid approach to enhance gait performance in patients with chronic stroke.© 2013 by Lippincott Williams & Wilkins.


The present invention relates to a bifidobacterium adolescentis SPMO212 having antiviral activity for hepatitis B virus, and a pharmaceutical composition for preventing and treating hepatitis B comprising thereof. The bifidobacterium adolescentis SPMO212 or its fraction of the present invention shows antiviral activity for hepatitis B virus by blocking the production of antigen s of hepatitis B virus, and by inhibiting the expression of DNA, RNA and HBsAg of the HBV.


The present invention relates to a bifidobacterium adolescentis SPM0212 having antiviral activity for hepatitis B virus, and a pharmaceutical composition for preventing and treating hepatitis B comprising thereof. The bifidobacterium adolescentis SPM0212 or its fraction of the present invention shows antiviral activity for hepatitis B virus by blocking the production of antigen s of hepatitis B virus, and by inhibiting the expression of DNA, RNA and HBsAg of the HBV.

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