• Communications of Mathematical Education
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• v.22 no.4
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• pp.417-444
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• 2008

Many research papers on the college students' functional concept show they have poor understanding on this topic. To compare the results with that of Korean students, four interrelated topics are chosen: How do they understand the concept of function?; what are their misconceptions including epistemological obstacles?; How do the function concepts develop and are acquired? For this a survey has been conducted to 95 engineering students just before they start Calculus course. We have done research on other major areas including psychology, economics and statistics to see how function is defined in these areas. Function definitions from US math text books are also introduced. Based on the these and the survey, some suggestions are made on the new curriculum which treat function as a correspondence relation. Vertical line test should be added to the Algebra II/Pre calculus course to check the univalent property.

• The Korean Journal of Health Service Management
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• v.7 no.1
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• pp.167-177
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• 2013

This study was to evaluate the influences of swallowing function on quality of life and activity of daily living of inpatients in geriatric hospital. The subjects were consisted of elderly patients over the age of 65, 50 people in geriatric hospital of gwangju and jeonnam area. The results are as follows: First, swallowing function score of the subjects is $29.90{\pm}5.27$, SWAL-QOL score is $158.12{\pm}33.36$, ADL score is $80.40{\pm}22.91$. Second, swallowing function, SWAL-QOL details and ADL details of each other showed a statistically significant correlation. Third, the items of swallowing function affecting on quality of life are 'oral cavity in residue', 'to eat solid food', and 'phlegm obstructs the throat'. In conclusion, this study showed that swallowing function of inpatients in geriatric hospital is closely associated with the quality of life and the activity of daily living. Therefore, future development of programs for the improvement of swallowing function is required in order to improve the quality of life of inpatients in geriatric hospital.

• PNF and Movement
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• v.21 no.2
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• pp.265-272
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• 2023

Purpose: The purpose of this study was to investigate tactile sense perception of the lower extremities according to physical function in children with spastic cerebral palsy. Methods: This study was conducted on 15 children diagnosed with spastic cerebral palsy. Physical function measurement items included dynamic balance ability, gross motor function level, and lower extremity ankle spasticity. The lower extremity tactile sensation uses a monofilament to measure the sole of the first metatarsal head, the sole of the fifth metatarsal head, the heel, the anterior part of the shin midway between the patella and the ankle joint, the kneecap, the upper anterior iliac spine, and the knee. A total of six measurements were taken in the mid-femoral region of the bone. Spearman correlation analysis was performed to determine the degree of body function and lower extremity tactile perception. Results: As the physical function of children with spastic cerebral palsy deteriorated, there was a decrease in tactile sensation in the thigh area corresponding to the proximal lower extremity. (p <.05). Conclusion: Children with spastic cerebral palsy and poor physical function have sensory loss not only in the distal part but also in the proximal part, so a treatment approach that recognizes and improves it is necessary.

• Journal of the Korean School Mathematics Society
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• v.10 no.2
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• pp.187-206
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• 2007

The purpose of this study is to know what is the difficulties that mathematics underachievers are suffering from the area of mathematical function and how to overcome this difficulties. For this study, we have selected two mathematics underachievers and carried out the inspection. The mathematics underachievers have undergone the difficulties of understanding mathematical problems, the difficulties from the deficit of prerequisite and basic learning, the difficulties of finding the answer typically and the difficulties of classifying an algebraic symbol, the difficulties of calculating the gradient of the straight line passing through two points.

• Journal of the Korean Institute of Rural Architecture
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• v.4 no.3
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• pp.23-37
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• 2002

Buddhist Architecture should be set for worship and an ascetic life, which is its main function as it is a religious facility and its space and form can be considered as means to achieve efficiently a religious function. Every religion concludes its religious function through its ideas and form of faith based on scriptures and religious precepts. The thing should be paid attention to from this point of view is how Buddhist doctrines are reflected on the architecture and the background recognition about the fundamental doctrines and religious system should be preceded to clarify it. Existing researches have studied the characteristics of Buddhist temples on the point of functional view and architectural spacial view through phenomenal ways. Though fruitful results bore about the Korean space through that way, more internal viewpoint is required to clarify the fundamental regularities and spatial concepts indwelling in temple architecture. Considering what structural elements were required to compose one space in traditional Korean architecture is the fundamental subject and important. This thesis searches architectural characteristics through inquiring about the main building and annexes and understanding symbolic characteristics about the arrangement of the Buddhist statue and solemn things in the Buddhist temples of tangible cultural assets or above located in Seoul area.

• Korean Journal of Human Ecology
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• v.15 no.4
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• pp.691-701
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• 2006

The purpose of this study is to find out a way to apply the strength of American homeowners association to Korean housing management system through literature review on the legal basis, organizational composition and functions, and management models of homeowners association. Following is distinctive characteristics of American homeowners association. 1) Homeowners association is a juridical entity which 'Condominium Act' obliges residents to join. 2) The board of directors is decision maker. The covenant, however, gives residents right to act in committees. 3) Homeowners association has self-governing functions such as management of common spaces, permission of new construction and taxation. 4) Types of management are volunteers' self-management, association-employed management, full agency management, and some mixed types. Residents pay management charge by month or by quarter. This study suggests as follow. 1) It is needed for Korea to legislate the law to regulate the management system of detached houses. 2)Management system of Korea can be more efficient with volunteers' committees for active participation. Above all, architectural control committee is essential in the circumstance that reform of apartment is popular these days. 3) The management entity is recommended to have some self-governing function to talk about taxation policy with local governments.

• Journal of Physiology & Pathology in Korean Medicine
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• v.16 no.6
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• pp.1151-1156
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• 2002

This research was done to make the effective prescription and cope with various senile dementia. Sprague-Dawley rats were injured by ibotenic acid to make a damage on learning and memory functions of model rats. At first acquisition test and retention rest were done in the Morris water maze. And to evaluate the effects of the sample drug(GSD) on choline acetyltranferase and acetylcholine esterase, immunoreactive measurement and enzymatic activity measuring were carried out. The ibotenic acid were injected to hippocampus CA1 and CA3 area. Conclusion : GSD improved the learning ability in the acquisition test and memory function in the retention test significantly. And GSD increased the level of ChAT which is synthesizing acetylcholine in CA1 area, and at the same time it increased the level of AChE which is resolving acetylcholine. These results show that GSD improved the cholinergic catabolism and anabolism, and the increment of metabolic activity of cholinergic system. In other words, it contributes to the recovery of damaged learning and memory function by ibotenic acid. So it can be concluded that GSD will be helpful to cholinergic brain damage induced by primary or senile reduction of acetylcholine secretive activity.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.22 no.1
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• pp.27-39
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• 1996

Recently, in vitro stratum curneum model was a useful tool to evaluate the skin condition such as tranespidermal water loss, skin hydration and etc.. In this study to evaluate the alteration of SC with aging in hairless mouse, we measured TEWL using in vitro SC model, SC lipid, and outer corneocytes area. Although the total SC lipid was rich about 30% in 8 week old mouse compared with that of 82 week old mouse, the TEWL values were higher in the former than that of the latter. The outer corneocytes area was 559 $\pm$ 65 $mu extrm{m}$2 in 8 week old mouse and 755 $\pm$ 56 ${\mu}{\textrm}{m}$2 in 82 week old mouse. So the barrier function was reinforced with aging. This result suggested that the reinforced barrier function is one of the defense systems against the outer enviornment and the decreased skin function with aging.

• The Journal of Korean Academy of Prosthodontics
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• v.36 no.5
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• pp.758-771
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• 1998

Assessment of implant mobility is an important and reliable method to clinically evaluate implant stability. PerioTest is a precise and reproducible device that cam dynamically measure the reaction of damping characteristics of peri-implant tissue. The aim of this study is to evaluate the effects of amount of implant surface area, diameter, type, implantation site, degrees of cortical engagement, and length of time in function on PTVs and to find out the most determining factor on PTVs. The results are as follows 1. 5.0mm diameter implants show significantly lower PTV than that of 3.75mm diameter implants. 2. PTV in the mandible is significantly lower than that of the maxilla 3. In the maxilla, there is no significant difference in PTV during the first year of implant function, but during the second year a significant decrease in PTV is noted. 4. In the mandible, there is a significant decrease in PTV during the first and second year of implant function. 5. Implantation site seems to be the most determining factor on PTV among the influencing factors in this study. In conclusion, the amount of implant surface area, type, degrees of cortical engagement had no significant effect on PTV, but installation site and diameter influenced significantly on PTV

• Journal of Physiology & Pathology in Korean Medicine
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• v.17 no.2
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• pp.553-559
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• 2003

In order to make the efficient prescription and cope with various senile dementia, learning and memory functions of Sprague-Dawley model rats were tested with Morris water maze at first. And to evaluate the effects of the sample drug(GM) on choline acetyltranferase and acetylcholine esterase, immunoreactive measurement and enzymatic activity measuring were carried out. Rats were injected with ibotenic acid through hippocampus CA1 and CA3 area. The results are as following. GM improves the learning ability in tile acquisition test and memory function in the retention test significantly. And GM increases the level of ChAT which is synthesizing acetylcholine in CA3 area, and at the same time it increases the level of AChE which is resolving acetylcholine. These results show that GM improve the cholinergic catabolism and anabolism, and the increment of metabolic activity of cholinergic system contributes to the recovery of damaged learning and memory function by ibotenic acid. So it can be concluded that GM will be helpful to cholinergic brain disease induced by primary or senile reduction of acetylcholine secretive activity.