1.The Prediction Model of the Number of Industrial Injured Persons Using Data Mining.
Kwan Hyung YI ; Ho Keun CHUNG ; Jung Sun PARK
Korean Journal of Occupational and Environmental Medicine 2000;12(4):515-523
OBJECTIVES: This study is to see the transition and pattern of the industrial iureal worker, and to develop the prediction model. METHODS: The data of the study are based on the samples from data-warehouse of Occupational Safety & Health Research Institute and are summed monthly from Jan 1986 to Dec 1999. This study data used data mart and Meta data from DW in KOSHA. The prediction model of the injured worker in Industry is designed by using a winters time series method after data preparing (i. e. sample, explore, modify) from DW. RESULTS: Thls predicted model obtained Winters-method multiplicative in exponential smoothing among applied all models, after the tlme series (total 163 months). It showed that the prediction power was 95.5 %. CONCLUSIONS: In the process of exploring the data, totally the rate of industrial injureal workers reduced, and in the yearly circulation, in February and September the number is the lowest but in June, July, October and November the higher. The number of monthly average injureal workers is 8709 (95 % confidence interval 8277, 9140). From the developed prediction model, since Aug 1999 the industrial injureal worker reduced rapidly in Dec 1999 and first period of 2000. But In second period of 2000 the number of the injured workers is increasing. To conclude, as the total economic situation is becoming better in 2000 than In 1999, its is supposed that the injured workers will increase more than the predictive injured workers because of the increase of production rate and labor force.
Academies and Institutes
;
Data Mining*
;
Employment
;
Humans
;
Occupational Health
2.Ruptured Disc Fragment as a Cause of Reduction Failure in the Dislocation of the Cervical Spine.
Jae Yoon CHUNG ; Keun Bae LEE ; Yu Bok PARK
Journal of Korean Society of Spine Surgery 1998;5(2):255-262
STUDY DESIGN: Thirteen patients with cervical interlocked facets dislocation in whom closed reduction by skull traction was failed were evaluated about the patterns of ruptured disc fragment. Objects : To evaluate the causes of failure at closed reduction, and the relation between ruptured discs and interlocked facets, and the treatment results through an anterior approach. SUMMARY OF LITERATURE REVIEW: In traumatic dislocation of the cervical facet joints, spinal cord or nerve roots injury associated with the ruptured disc fragment has been reported. However, there is few report evaluating the patterns of ruptured disc fragment as a cause of reduction failure. MATERIALS AND METHODS: Between 1988 and 1997, thirteen patients were treated by anterior fusion with plate after complete removal of the intervertebral disc through anterior approach and reduction of interlocked facets by O1iveira method. They have been followed for an average of 36 months(range : 12-96 months). The interlocking was bilateral in seven cases and unilateral in six cases. We assessed the types of ruptured disc fragment by preoperative MRI and CT and the clinical and radiological results. RESULTS: Ruptured disc fragment was found in all thirteen patients with interlocked facets dislocation. The patterns of ruptured discs were within the uncovertebral joints in 5 cases, posterioly under the posterior longitudinal ligament in 3 cases, anteriorly under intact anterior longitudinal ligament in 3 cases and combined under the anterior and posterior longitudinal ligament in 2 cases. The displacement of ruptured disc fragment were seemed to be the cause of failure in closed reduction. CONCLUSIONS: Intervertebral disc injury should be evaluated carefully with MRI and CT in the lower cervical interlocked facet dislocations before trial of reduction or decision makings of treatment.
Dislocations*
;
Humans
;
Intervertebral Disc
;
Joints
;
Longitudinal Ligaments
;
Magnetic Resonance Imaging
;
Skull
;
Spinal Cord
;
Spine*
;
Traction
;
Zygapophyseal Joint
3.A clinical analysis on the management of moderate head injury.
Ho Sung CHUNG ; Cheol Wan PARK ; Keun LEE
Journal of the Korean Society of Emergency Medicine 1993;4(2):63-72
No abstract available.
Craniocerebral Trauma*
;
Head*
4.Carcinoma in situ of the urinary bladder in bladder washing cytology.
Doo Hyun CHUNG ; In Ae PARK ; Eui Keun HAM
Korean Journal of Cytopathology 1991;2(1):51-55
The diagnosis of carcinoma in situ of urinary bladder is difficult in that the symptoms and cystoscopic findings are nonspecific. The cytology of urine could be helpful for diagnosis of carcinoma in situ of urinary bladder. We present a case of bladder washing cytology of carcinoma in situ. A 54 year old man presented with dysuria for 1 year. Cystoscopic findings revealed multifocal reddish trabeculated lesions. The bladder washing cytology revealed rather uniform tumor cells which were singly scattered or forming syncytium in the clean background. The nuclei were round to oval with inconspicious nucleoli. The cystoscopic biopsy revealed typical histologic features of carcinoma in situ of urinary bladder.
Biopsy
;
Carcinoma in Situ*
;
Diagnosis
;
Dysuria
;
Giant Cells
;
Humans
;
Middle Aged
;
Urinary Bladder*
5.Ureteroscopic Management of Large Distal Ureteral Stones.
Hyung Keun PARK ; Sang Hyeon CHEON ; Hong Sik KIM ; Sang Uk CHUNG ; Tae Han PARK
Korean Journal of Urology 2000;41(10):1234-1238
No abstract available.
Ureter*
6.A case of idiopathic precocious puberty treated with a luteinizing hormone relaeasing hormone analog.
Keun Hee CHUNG ; Yoo Mi KIM ; Mi Won KIM ; Soon Ki KIM ; Moon Soo PARK ; Jin Keun CHANG
Journal of the Korean Pediatric Society 1991;34(8):1132-1138
No abstract available.
Lutein*
;
Luteinizing Hormone*
;
Puberty, Precocious*
7.A Case of Acute Interstitial Nephritis Associated with Yersinia Pseudotuberculosis Infection.
Keun Hee CHUNG ; Yoo Mee KIM ; Mee Won KIM ; Soon Gi KIM ; Moon Soo PARK ; Jin Keun CHANG
Journal of the Korean Pediatric Society 1990;33(8):1122-1127
No abstract available.
Nephritis, Interstitial*
;
Yersinia pseudotuberculosis*
;
Yersinia*
8.Depression, Anxiety, Stress Perception and Coping Strategy in Male Sexual Dysfunctional Patients.
Hern Gu CHUNG ; Sang Keun CHUNG ; Ik Keun HWANG ; Jong Kwan PARK
Journal of Korean Neuropsychiatric Association 1997;36(3):503-511
Thirty-one male sexual dysfunctional patients were selected to investigate their depression, anxiety, stress perception, and coping strategy. They were examined by Beck's Depression Inventory, State-Trait Anxiety Inventory, Symptom Checklist-90-Revised, Global Assessment of Recent Stress Scale and Coping Strategy. Twenty-seven healthy normal adults were selected as control group. The results were as follows: 1) Depression and anxiety scores were significantly higher in the patients. 2) Stress perception of usual life, especially work, job and change in relationships, was significantly higher in the patients. Frequency of negative life events was significantly higher in the patients. 3) As coping strategy, intellectualisation, redefinition and compliance were most frequently used by the patients. Most of the patients showed tendency to deny their vulnerabilities. Patients who lived with spouse showed more active confrontation and less emotional turmoil, anxiety and fear than patients who lived without spouse.
Adult
;
Anxiety*
;
Compliance
;
Depression*
;
Humans
;
Male*
;
Spouses
9.Effect of STEL-toluene on Metabolism of Benzene in Rats.
Jaehoon ROH ; Dong Chun SHIN ; Jung Gyun PARK ; Young Hahn MOON ; Ho Keun CHUNG
Korean Journal of Preventive Medicine 1988;21(1):152-162
Benzene and toluene, which are widely used aromatic hydrocarbons in workplace, are recently proved to cause health hazards due to their toxic effects. This study investigated the influence of toluene on the urinary excretion of benzene metabolite by administering short term exposure limit(STEL) of these compounds(i.e., 13.8mg/kg of benzene and 108.8mg/kg of toluene) intraperitoneally into Sprague-Dawley rats. After administration, urinary phenol concentration of rat was measured by gas chromatography for every three hours. Data were analyzed by non-parametric statistical methods using Kruskal-Wallis multi-sample test and Mann-Whitney U test. The following results were obtained: 1. Administration of STFL-benzene increased urinary phenol concentration in rats. 2. Urinary phenol concentration was increased logarithmically according to the dosage of benzene. 3. Excretion of phenol in urine was decreased when benzene and toluene were administered simultaneously compared with administering benzene alone. In Summary, these results reveal that administration of STEL of toluene has antagonistic effect of urinary excretion of benzene metabolite in rats.
Animals
;
Benzene*
;
Chromatography, Gas
;
Hydrocarbons, Aromatic
;
Metabolism*
;
Phenol
;
Rats*
;
Rats, Sprague-Dawley
;
Threshold Limit Values
;
Toluene
10.Two Cases of Benign Symmetrical Lipomatosis.
Soo Keun PARK ; Dong HOUH ; Hyung Ok KIM ; Chung Won KIM
Korean Journal of Dermatology 1989;27(6):752-756
We report two cases of benign symmetrical lipornatosis, one associated with mild hyperthyroidism in a 57-year-old man and the other with alcoholic hepatitis in a 57-year-old man. In the histologic exsmination of the excised mass we found fibrous pseudocapsules surrounding adipose tissue in case 1, but not in case 2. Liposuction was performed in case 1 and simple excision in case 2 for treatment of tumors. The tumor masses were not recurred in clinical observation for follow-up 5 months after treatment.
Adipose Tissue
;
Follow-Up Studies
;
Hepatitis, Alcoholic
;
Humans
;
Hyperthyroidism
;
Lipectomy
;
Lipomatosis*
;
Middle Aged