• East Asian mathematical journal
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• v.29 no.5
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• pp.521-527
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• 2013

The aim of this paper is to define hyperholomorphic function with sedenion variables in $\mathbb{C}^8$ and research the properties of hyperholomorphic functions of sedenion variables. We generalize the properties of hyperholomorphic functions in sedenionic analysis.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.9 no.4
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• pp.155-161
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• 2014

The satisfaction of customers from the design stage of product was investigated and reflected by the stage of important function analysis in the enforcement of technique. The goal of this research is worked one reasonable function analysis of the cost reduction and quality enhancement to spread out by using QFD (Quality Function Development). In the case study, the function analysis of VE under the this theoretical background applied to one personal functional combination stimulator. In order to get our goal, the theoretical and case study was in parallel studied each other. This result shows that the new product by using the satisfaction of customers and the quality function development is pointed out the coincidence of the product value.

• The Korean Journal of Health Service Management
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• v.10 no.3
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• pp.147-158
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• 2016

Objectives : The aim of this study was to investigate predictors of cognitive function decline among community dwelling elderly. Methods : Data were analyzed from the Survey of Living Condition of Elderly panel study. Cognitive function was measured with the MMSE-KC at baseline and year 3. The study subjects were 5,464 community dwelling people aged 65 years or older who had no disability at baseline. Logistic regression analysis was used to predict cognitive function decline. Results : From 2008-2011, 4,417(80.8%) elderly people had no cognitive decline, and 1,074(19.2%) showed cognitive function decline measured by the MMSE-KC. After adjusting for demographics and baseline MMSE-KC score, the best predictors for cognitive function decline at 36 months were diabetes mellitus, smoking, low intensity physical activity, relationship with relatives and friends. Conclusions : Health promotion programs that are focused on the elderly are essential in preventing cognitive function decline. Promoting regular physical activity, and social relationships should be included in health promotion for elderly. When treating patients with diabetes, preventing cognitive impairment should be considered through education and counseling.

• 한국정보디스플레이학회:학술대회논문집
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• 2007.08b
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• pp.1706-1707
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• 2007

A possibility of work function engineering on ZnO thin film is studied by in-situ and ex-situ doping process. The work function of ZnO thin film decreases with increasing boron and phosphorus doping quantity. But, the work function of Al-doped ZnO (AZO) thin film increases as the boron doping quantity incresess. The range of work function change on ZnO thin films is 3.5 eV to 5.5 eV. This result shows that the work function of ZnO thin film is indeed engineerable by changing materials of dopants and their compositional distribution of surface. We also discuss the possible mechanism of work function engineering on ZnO thin films.

• Proceedings of the KSPS conference
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• 2007.05a
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• pp.149-151
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• 2007

This study was designed to investigate fast ab/adduction rate of articulation valves in normal adults. The measurement of fast ab/aduction rate has traditionally been used for assessment, diagnosis and therapy in patients who suffered from dysarthria, functional articulation disorders or apraxia of speech. Fast ab/adduction rate shows the documented structural and physiological changes in the central nervous system and the peripheral components of oral and speech production mechanism. Fast ab/adduction rates were obtained from 20 normal subjects by producing the repetition of vocal function (/ihi/), tongue function (/t${\wedge}$/), velopharyngeal function (/m/), and labial function (/p${\wedge}$/). The Aerophone II was used for data recording. The results of finding as follows: average fast ab/adduction rates were vocal function(6.21cps), tongue function(7.42cps), velopharyngeal function(5.23cps), labial function (6.93cps). The results of this study are guidelines of normal diadochokinetic rates. In addition, they can indicate the severity of diseases and evaluation of treatment.

• Journal of Trauma and Injury
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• v.30 no.4
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• pp.179-185
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• 2017

Purpose: Rib fracture is the most common complication of blunt thoracic trauma. We investigated the effect of rib fracture on pulmonary function in the conservatively treated patients. Methods: From January 2000 to February 2017, we reviewed the records of 72 patients with rib fracture and pulmonary function tests were performed. According to the number of rib fractures, patients were classified into two groups: less than six fractured ribs (group A) and more than six fractured ribs (group B). The groups were compared concerning demographics, underlying diseases, associated thoracic injuries, surgery, mechanical ventilator times, days spent in the intensive care unit and pulmonary function test. Results: There were no statistically significant differences in the demographic data between the two groups. Mean hospitalization was 13.5 days in group A and 27.0 days in group B (p<0.001). There was no statistically significant difference between the two groups in the pulmonary function test. Conclusions: We conclude that pulmonary function is restored by conservative treatment in patients with rib fractures even if the number of rib fractures increases. In patients with multiple rib fractures, studies comparing open rib fixation and conservative treatment of long term pulmonary function are required.

• Korean Journal of Child Studies
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• v.37 no.6
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• pp.19-33
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• 2016

Objective: This study aimed to examine the prospective links among perspective taking, attachment security, and executive function and the mediating role of executive function on the relationship between attachment security and perspective taking. Methods: The participants included 147 preschoolers living in Gyeonggi. The data-analysis methods included descriptive statistics, independent t-tests, one-way ANOVAs, Pearson's correlation analysis, hierarchical multiple regression analysis, and the Sobel test. Results: First, preschoolers' perspective taking was significantly related to attachment security, and executive function. Furthermore, there was a significant association between attachment security and executive function. As expected, the correlations were positive in all cases. Second, the effects of attachment security on intention and emotion perspective takings were fully mediated by executive function when holding children's age and vocabulary constant. However, executive function did not predict thought perspective taking, whereas attachment security did. Conclusion: Given that parent-child attachment security might play an important role in child cognitive and socio-cognitive development, parents' endeavors to enhance the quality of the attachment relationship could be a fruitful path for preschoolers' developing executive capacities and perspective taking.

• Journal of Internet Computing and Services
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• v.6 no.2
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• pp.37-47
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• 2005

Most of the methods of estimating the size of software are based on the functions provided to costumers and in the process of granting the score to each function we consider the complexity during the process. The FFP technique has advantages applied to vast areas like data management. real-time system, algorithmic software, etc, but on the other hand, has disadvantage on estimating sizes for weights for necessary function elements. This paper proposes the estimating method for software size by considering the complexity of each function elements in full function point calculation method applied to a new developed project and maintenance projects. For this, based on function point by using surveyed data proved the validity of proposed method. The valid result. was that the function elements, the attributes used in size estimation of software, est mated better estimated sizes than in the case of other weights being applied.

• Korean Journal of Optics and Photonics
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• v.15 no.5
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• pp.461-468
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• 2004

A finite model eye of visual acuity 24/20 in emmertropia was presented. We determined the image intensity profile on retina using optical transfer function of model eye, and compared with clinical data. The retinal contrast sensitivity function based on the Stiles-Crawford effect, photopic response, diffraction, aberration, retinal contrast sensitivity, and pupil size is calculated. Visual acuity for human eye could be predicted by examining the modulation transfer function of a bar target and retinal contrast sensitivity function. This visual acuity was evaluated for pupil diameters ranging from 1 to 8 mm.

• 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.