• Transactions of the Korean Society of Automotive Engineers
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• v.4 no.6
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• pp.85-96
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• 1996

Most protection systems such as seat belts and airbags are not effective means for side structure. There has been significant effort in the automobile industries in seeking other protective methods, such as stiffer structure and padding on the door inner panel. Therefore, a car-to-car side impact model has been developed using ATB occupant simulation program and validated for test data of the vehicle. Compared to the existing side impact models, the developed model has a more detailed vehicle side structure representation for the more realistic impact response of the door. This model include impact bar which effectively increases the side structure stiffness without reduction of space between the occupant and the door and padding for absorbing impact energy. The established model is applied to a 4-door vehicle. The parameter study indicated that a stiffer impact bar would reduce both the acceleration-based criteria, such as thoracic trauma index: TTI(d), and deformation-based criteria, such as viscous criterion(VC). Padding on the door inner panel would reduce TTI(d) while VC gives the opposite indication in a specified thickness range. For a 4-door vehicle, the stiffness enhancement of B-pillar is more beneficial than that of A-pillar for occupant injury severity indices.

• Journal of Korean Critical Care Nursing
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• v.11 no.2
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• pp.21-33
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• 2018

Purpose : To explore the person-centered care (PCC) experienced by critical patients. Method : This qualitative study deductively examined the attributes of the PCC model proposed by Jakimowicz and Perry. The participants were 16 patients who were recently discharged from intensive care units at a university hospital. Data were collected through in-depth interviews and were analyzed using the deductive method of content analysis. Results : A total of 4 categories, 16 subcategories, and 33 codes were generated from 171 meaningful statements. The final 4 categories were "compassionate presence," "professional interaction," "outstanding competency," and "patient identity." These were consistent with the main attributes of Jakimowicz and Perry's model. However, most of the codes belonged to the "compassionate presence" and "patient identity" categories. Among the attributes of the model, "continuity of nursing," "therapeutic relationship," "expert knowledge," "clinical knowledge," "evidence-based intervention," and "patient's rights" were not derived as codes. Conclusion : These findings deepen the understanding of the PCC model from the patient's point of view. The main attributes of PCC identified in the current study can be applied to the development of practical guidelines for intensive care nursing. In addition, we recommend the development of a PCC measurement tool for critical care patients.

• Transactions of the Korean Society of Automotive Engineers
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• v.7 no.5
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• pp.249-257
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• 1999

A three dimensional finite model of a human neck has been developed in an effort to study the mechanics of cervical spin while subjected to vertical impact. This model consisting of the vertebrae from C1 through C7 including posterior element and ligaments was constructed by 2mm thick transverse CT cross-sections and X-ray film taken at lateral side. Geometrical nonlinearity was also considered for the large deformation on the disc. ABAQUS package was used for calculation and its results were verified comparing with responses of a model under static loading condition with published in-vitro experimental data. There were more cervical fracture in the restrained (compression) mode than in the nonrestrained (flexion-compression and extension-compression) mode. Upper cervical(C1-C2) injuries were observed under compression-extension modes, while lower cervical injuries occurred undjer compression-flexion modes. Posterior ligament distraction without bony damage at the upper cervical spin(C1-C2) were observed secondary to C5-C7 trauma in compression-flexion modes.

• The Journal of Korean Academy of Prosthodontics
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• v.31 no.3
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• pp.351-384
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• 1993

Complete denture occlusion must be developed to function efficiently and with the least amount of trauma to the supporting tissues. For the preservation of supporting tissues, it is imperative to reduce to a minimum the functional stress induced by dentures. The magnitude of the horizontal component of functional stress contributed by various occlusal teeth forms has not been studied. This study was aimed to investigate the influence of different occlusal teeth forms on the mode of distribution of the stresses in the mandibular tissue, and the displacement of lower dentures during the variant functional movement of mandible for this study three dimensional finite element analysis was used. FEM models were created using commercial software Super Sap for IBM 32 bit computer. The model was composed of 3380 brick elements and 4346 nodes. The results were as follows. 1. The magnitude of stress was similar between two models in centric occlusion, in the case of anatomic model, the stress was concentrated on the buccal side of alveolar ridge beneath the bicuspids. 2. During the protrusive movement, the increasing of stress from the posterior to anterior part of mandible was seen in the case of anatomic model. 3. During the lateral movement, the stress of anatomic model was greater than that of nonanatomic model. 4. The stress of anatomic model was concentrated on the anterior region of residual ridge during the lateral movement. 5. In the case of anatomic model the anterior part of denture was displaced severely at the centric and lateral position, but the denture of nonanatomic model was displaced minutely at the protrusive and lateral position.

• Journal of muscle and joint health
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• v.1 no.1
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• pp.48-70
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• 1994

The purpose of this study was to determine the effects of music therapy on acute, subacute and chronic pain and depression of musculoskeletal trauma patients. The study was designed using nonequivalent control group pretest-posttest design within the framework of an adaptation model. The subjects were composed of forty patients, and twenty of them were assigned to the experimental group and twenty to the control group within the unit of patients. Data were summarized as follows : 1. There were significant changes of pain scores in an experimental and a control group measured before and after the treatment. 2. There were significant changes of pulse rates, respiration rates and systolic blood pressure, but were no significant changes of diastolic blood pressure in an experimental and a control group measured before and after the treatment. 3. There were no significant changes of the amount of ${\beta}$-endorphin in an experimental and a control group measured before and after the treatment. 4. There were no significant changes of depression scores in an experimental and a control group measured before and after the treatment. As a result, music therapy was a useful nursing intervention for relief of acute, subacute and chronic pain. Two suggestions could be made on the ground of the results of this study. 1. On the basis of endogenous pain control theory, it's necessary to research the changes of the amount of ${\beta}$-endorphin as the effect of the music therapy on patients having severe pain. 2. It's necessary to research the changes of the amount of ${\beta}$-endorphin according to the lapse of time after the music therapy for pain relief.

• Research in Community and Public Health Nursing
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• v.19 no.1
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• pp.36-45
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• 2008

Purpose: This study was to estimate the prevalence of dementia in order to estimate the associations of dementia with its risk factors in the community elderly. Methods: The multistage random cluster sampling method was used to select the subjects. The response rate was 94.3%. For the 1st stage screening survey, the Korean-version Mini-Mental State Examination (K-MMSE) and the Bathel Index of activities of daily living (ADL) and instrumental activities of daily living (IADL) were used as primary screening tools. At the 2nd stage. diagnoses were confirmed according to the Clinical Dementia Rating Scale (CBR) and Computer Tomogram (CT). Results: Age-sex adjusted prevalence (%) [95% CI] of dementia was 6.25% [4.47-7.83] (male 4.21% [2.40-6.02]; female 8.28% [5.71-10.85]). Four statistically significant risk factors of the dementia were identified: age 70-74 (OR=1.367), age 75-79 (OR=1.712), age 80-84 (OR=2.465), age 85 over (OR=7.363) illiteracy (OR=3.827); unconsciousness after head injury (OR=3.383), and no exercise (OR=2.188). Hosmer and Lemeshow goodness-of-fit index of dementia risk model was E (legit of dementia)= -4.337+$0.312^*Age(70{\sim}74)+0.538^*Age(75{\sim}79)+0.902^*Age(80{\sim}84)+1.996^*Age$(85over)+$1.342^*$Illiteracy+$1.219^*$Unconsciousness after head trauma+$0.783^*$No exercise. We confirmed that the overall prevalence of dementia in adults aged 65 and older was 94.3%. The risk factors of dementia were explained by age, illiteracy unconsciousness after head trauma and no exercise. Conclusion: These data have been used to estimate the incidence of dementia in elderly community population and to manage the possible role of risk factors as predictors of dementia.

• Journal of Medicine and Life Science
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• v.17 no.1
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• pp.7-15
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• 2020

The field triage guidelines have been widely implemented in the Korean trauma system. This study aimed to evaluate and validate whether it is reliable to use the field triage guidelines for predicting severe traumatic brain injury (TBI) and traumatic spinal injury (TSI) patients. This study retrospectively analyzed in-hospital cohort registries of all TBI and TSI patients, who visited the emergency department (ED) of the Jeju National University Hospital from 1 January 2013 to 31 December 2015. The primary outcome was defined as TBI and TSI patients with an injury severity score (ISS)>15. Secondary outcomes were defined as cases in which one or more of the following conditions: in-hospital death, ISS>15, admission to the intensive care unit, emergency surgery. We enrolled 14,889 TBI and TSI patients who visited ED, of which 7,966 (53.5%) were triage positive. The overall sensitivity, specificity and area under the curve (AUC) of the full cumulative field triage guidelines step's model (Step 1+3+4 criteria) for primary outcome were 82.8%, 47.0%, and 0.646, respectively. In the results for secondary outcomes, the specificity did not show a significant difference, but the sensitivity decreased to 66.5% and AUC to 0.568. The results of this study suggest that further optimization of the field triage guidelines is needed to identify high-risk TBI and TSI patients.

• Advances in biomechanics and applications
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• v.1 no.3
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• pp.169-185
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• 2014

Computational multibody models of the elbow can provide a versatile tool to study joint mechanics, cartilage loading, ligament function and the effects of joint trauma and orthopaedic repair. An efficiently developed computational model can assist surgeons and other investigators in the design and evaluation of treatments for elbow injuries, and contribute to improvements in patient care. The purpose of this study was to develop an anatomically correct elbow joint model and validate the model against experimental data. The elbow model was constrained by multiple bundles of non-linear ligaments, three-dimensional deformable contacts between articulating geometries, and applied external loads. The developed anatomical computational models of the joint can then be incorporated into neuro-musculoskeletal models within a multibody framework. In the approach presented here, volume images of two cadaver elbows were generated by computed tomography (CT) and one elbow by magnetic resonance imaging (MRI) to construct the three-dimensional bone geometries for the model. The ligaments and triceps tendon were represented with non-linear spring-damper elements as a function of stiffness, ligament length and ligament zero-load length. Articular cartilage was represented as uniform thickness solids that allowed prediction of compliant contact forces. As a final step, the subject specific model was validated by comparing predicted kinematics and triceps tendon forces to experimentally obtained data of the identically loaded cadaver elbow. The maximum root mean square (RMS) error between the predicted and measured kinematics during the complete testing cycle was 4.9 mm medial-lateral translational of the radius relative to the humerus (for Specimen 2 in this study) and 5.30 internal-external rotation of the radius relative to the humerus (for Specimen 3 in this study). The maximum RMS error for triceps tendon force was 7.6 N (for Specimen 3).

• Korean Journal of Social Welfare
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• v.67 no.1
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• pp.263-288
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• 2015

This study is to research the mediating effects of optimism and quality of relationship which interpersonal traumatic experience influences posttraumatic growth. It focuss on verifying the impact of interpersonal traumatic experience to optimism and quality of relationship and the influence of optimism and quality of relationship to posttraumatic growth. And also it is to verify dual mediating effect between optimism and quality of relationship. Data for this study were collected through the use of a survey instrument completed by 405 interpersonal traumatic experience, 30-60 age group. Collected data were analysed by AMOS program, Structure Equation Model(SEM) was implemented to verify the mediating effect between optimism and quality of relationship. Finally, Phantom Variable was utilized for verification of indirect influence of a multi mediating effects. The findings of this study were as follows, First, the result shows that the higher level interpersonal traumatic experience, the higher posttraumatic growth they have. Second, it shows that optimism and quality of relationship have partial mediating effect between interpersonal traumatic experience and posttraumatic growth. Third, it was analyzed that optimism and quality of relationship had double mediating effect. Based on these findings, the research discussion reinforced the importance of intervene with its optimism and quality of relationship in the site of those who experience interpersonal trauma. Theological, political and practical implications of this study are as follows. First, it has a series of significance in terms of that this study confirmed its influence considering the quality of relationship from interpersonal experience among relevant factors of traumatic accident, optimism among individual factors, quality of relationship among environmental factors based on 'the crisis of life and the theory of individual growth'. econd, even though optimism and quality of relationship were proved as major predictors for posttraumatic growth of those who experience interpersonal traumatic, psychological support center for traumatic experience is not operated systematically in Korea. Third, this study implies that it should intervene mainly with its optimism and quality of relationship in the site of those who experience interpersonal trauma such as any abuses including sexual abuse, bullying, and divorce.

• Korean Journal of Psychosomatic Medicine
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• v.28 no.1
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• pp.20-28
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• 2020

Objectives : The aim of this study was to compare psychosocial characteristics of the functional gastrointestinal disorders FGID group, non-FGID group, and control group and determine factors affecting the QOL of patients with FGID. Methods : 135 patients diagnosed with FGID were selected. 79 adults had no observable symptoms of FGID (control group) and 88 adults showed symptoms of FGID (non-FGID group). Demographic factors were investigated. The Korean-Beck Depression Inventory-II, Korean-Beck Anxiety Inventory, Korean-Childhood Trauma Questionnaire, Multidimensional Scale of Perceived Social Support, Connor-Davidson Resilience Scale, Patient Health Questionnaire-15 and WHO Quality of Life Assessment Instrument Brief Form were used to assess psychosocial factors. A one-way ANOVA was used to compare differences among groups. Pearson correlation test was performed to analyze the correlation of psychosocial factors and QOL of the FGID group. Further, a hierarchical regression analysis was conducted to determine factors affecting the QOL of the FGID group. Results : Between-group differences were not significant in demographic characteristics. Depression (F=48.75, p<0.001), anxiety (F=14.48, p<0.001), somatization (F=24.42, p<0.001) and childhood trauma (F=12.71, p<0.001) were significantly higher in FGID group than in other groups. Social support (F=39.95, p<0.001) and resilience (F=17.51, p<0.001) were significantly lower in FGID group than in other groups. Resilience (β=0.373, p<0.01) was the most important explanatory variable. The explained variance was 47.2%. Conclusions : Significantly more symptoms of depression, anxiety, childhood trauma, and somatization were observed for the FGID group. This group also had less social support, resilience, and quality of life than the non-FGID and control groups. The key factor for quality of life of the FGID group was resilience.