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      • 이중 셀 구성에 의한 셀룰라 이동통신 시스템의 채널용량 개선

        신창윤,우병훈,조성준 한국항공대학교 1994 論文集 Vol.32 No.-

        본 논문에서는 셀에서의 용량 증대를 위하여 셀을 내부 셀과 외부 셀로 나누어 구성하는 이중셀을 적용하였을 경우 반송파 대 동일채널간섭비와 채널용량을 산출하고 분석하였다. 이를 위하여 셀룰라 육상이동통신 시트테에서 규칙적인 주파수재사용 패턴 N을 도출하여 무지향성 안테나 사용시와 지향성 안테나 사용시 셀 패턴에 따른 반송파 대 동일채널간섭비를 계산하였다. 이중 셀을 구성하였을 때 내부 셀에 주파수 재사용 패턴 N을 작게하여 내부와 외부 셀의 주파수 재사용 패턴을 다르게 하면 채널용량이 크게 개선되었다. 실제적인 통화품질 기준인 반송파 대 동일채널간섭비가 24dB 이상이 되는 경우 가장 용량면에서 우수한 주파수 재사용 패턴은 N=7인 3 섹터 셀이었고 이중 셀로 구성하였을 경우 내부 셀 패턴이 N=3, 외부 셀 패턴이 N=7인 3 섹터 셀의 경우였다. 이 경우 이중 셀을 구성하지 않은 N=5인 주파수 재사용 패턴과 같은 용량을 가질 수 있었다. 이것은 이중 셀을 상용하므로서 한정된 주파수의 수용 용량을 1.4배 높일 수 있음을 알 수 있다. In this paper, when the dual cell, a cell which is divided into the inner cell and outer cell, is employed to increase the channel capacity, the carrier power to co-channel interference power ratio (C/I) and channel capacity are evaluated and analyzed. For this evaluation, the regular frequency reuse pattern factor N is calculated and them the C/I is calculated according to the cell pattern when the isotropic antenna is used and the directional antenna is used, respectively. In a dual cell, the channel capacity is incrased by making the frequency reuse pattern factor N of inner cell smaller than that of outer cell. In the case of nondual cell, the channel capacity is the largest when the frequency reuse pattern factor N is 7 in the 3 sector cell on the condition of the C/I is over the 24dB of standard call quality. In the case of dual cell, the channel capacity is the largest when the frequency reuse pattern facotr N is 3 for inner cell and N is 7 for outer cell. In this case, the cell has the same capacity as the frequency reuse pattern factor N=5 of nondual cell. This result shows that the channel capacity with dual cell can be incrased in the limited available frequency by 1.4 times more than the capacity with nondual cell.

      • 학동기 이후의 성장 주기별 신장 및 체중 증가율에 관한 연구

        신상만,박경배,박준수,김창휘 순천향의학연구소 1996 Journal of Soonchunhyang Medical Science Vol.2 No.2

        This study was carried out to know the growth rate of height and weight in Korean children which was conducted on semi-longitudinal research method. For this study, health records of the sample group that carry information for the period from their first grade of elementary school to the third grade of high school were used, 120 males and 120 females who became third grade of high school in 1994 were selected at random from each of the four cities; Seoul, Chonan, Kumi and Eumsung. Among 917 candidates, 460 males and 457 females born between March 1976 and December 1976 were finally selected as a sample for the purpose of this research. The results are as follows; 1. Measurement of the physique Both male and female samples showed constant growth in height and weight. Male grew from the range of 115.8±4.8㎝ at the age of 6 to 171.5±5.6㎝ at 17 while females grew from the range of 114.6±4.7㎝ to 158.9±5.1㎝. The Weight of males rose from the range of 19.9±2.5Kg at the age of 6 to 62.5 ±8.1Kg at 17 while that of females increased from the range of 19.3±2.4Kg to 54.1±6.9Kg. 2. Growth and Nutritional Indices The study revealed that relative weight of the sample group increased as they grew older. The Kaup index also showed an increase in line with the advancement in their ages, and exceeded 2.0 at the age of 15 for males and at the age of 14 for females. The Rohrer index, on the other hand, showed a declining trend for the first several years but began to increase at the age of 13 for males and at the age of 11 for females. 3. Comparative analysis with similar regardless that were performed using sample groups born in 1965 and 1970 revealed the followings; ① Height - The average height of male samples(born in 1976) under this survey was bigger than that of male samples born in 1965 in their respective age from 6 to 17. - The average height of male samples born in 1970 was bigger than that of male samples born in 1970 from 6 to 14 but showed no difference after 15. - Female samples born in 1976 showed height that was bigger than the other sample groups born in 1965 and 1970 in their respective age from 6 to 17. ② Weight Both male and female samples under this survey weighed more than their counterpart sample groups born in 1965 and 1970 in their respective age. 4. The Maximum Growth Age was 12.3 for males and 10.4 for females. Males grew 5.92±2.77㎝ a year on an average when they were 12 and 13 years old while females grew 5.93±2.69㎝ when they were 11 and 12 years old. In conclusion, the study revealed that like in other countries males and females experienced the second growth spurt during their adolescence and relatively slow growth thereafter. Unlike height which showed constant growth, weight varied; there were incidences where females even experienced weight loss after years of diminishing growth rate in the wake of the adolescence.

      • 제7차 고등학교 체육과교육과정에 대한 인식

        신승호,한상준 江原大學校附設體育科學硏究所 2003 江原大學校附設體育科學硏究所論文集 Vol.- No.26

        The purpose of this study was to examine how much the high school students understand the 7th physical education curriculum, to find out the better teaching method for physical training class and to give basic data needed for using selection focused curriculum. To attain this purpose, this paper dealt with the survey with the 1st-2nd grade students, 1173 students who live in cities and counties whose population is more than 200,000 and less than 100,000. The results are as follows. Most students felt positive about the structures and class aims of the 7th curriculum in high school physical education. boy students and high graded group had relatively higher regards and participation of the 7th physical education curriculum. They also had positive regards about the present physical training evaluation. In other words, boy students, high graded group and county's group had more positive thought about the evaluation process and results of the physical training class than girl students, low graded group and city's group.

      • 골반 골절 환자에 있어서 골절 위치에 따른 하부 요로 손상의 연관성

        신대은,문형윤,박성운,노준 朝鮮大學校 附設 醫學硏究所 2008 The Medical Journal of Chosun University Vol.33 No.3

        Background and Objectives: Lower urinary tract injuries in pelvic bone fracture can lead to significant complication. We tried to find out the relationship between the fracture location and the bladder, urethra injury in patients who sustaining pelvic bone fracture. We thought that the fracture locations could serves as markers for injury. Materials and Methods: A clinical study was made on 43 patients who sustaining pelvic bone fracture with bladder or urethra injury in the Chosun University hospital during the period of 5 years from January, 2002 to December 2006. Diagnosis was done by retrograde cystography, retrograde urethragraphy, abdomenpelvic computed tomography. Results: Of the 43 patients reviewed, 27 patients had intraperitoneal type bladder rupture, and 12 patients had extra-peritoneal type bladder rupture. 9 patients had urethral rupture. Intraperitoneal type bladder rupture cases are most commonly associated with infrapubic ramus, suprapubic ramus and acetabulum. but the statistically significance is abscent (p= 0.642). Also extraperitoneal type bladder rupture cases are most commonly associated with infrapubic ramus, suprapubic ramus and acetabulum. but the statistically significance is abscent (p= 0.548). And all type bladder rupture cases are most commonly associated with infrapubic ramus, suprapubic ramus and acetabulum. but the statistically significance is abscent (p= 0.775). And urethral rupture cases are most commonly associated with infrapubic ramus, suprapubic ramus and acetabulum but the statistically significance is abscent (p= 0.528). Lastly, Combineded bladder rupture and urethral rupture cases are most commonly associated with infrapubic ramus, llium, Symphysis pubis. But the statistically significance is abscent (p= 0.462). Conclusions: In our study when there is a pelvic bone fracture, the fractured site of pelvic bone have no statistically association with lower urinary tract injury. But most common pelvic bone fracture site of all lower urinary tract injury cases is infrapubic ramus. Therefore, if infrapubic ramus fracture is found in the condition of pelvic bone fracture, it is highly likely to have lower urinary tract injury. More careful observation and diagnosis is necessary for this case.

      • KCI등재

        Chlorpromazine으로 유발된 음경지속발기증 1례

        신유호,윤도준,이충현,송지영,이상철 大韓神經精神醫學會 1996 신경정신의학 Vol.35 No.3

        저자들은 항정신병약물 chlorpromazine 치료 중에 음경지속발기증이 발생하여 수술까지 시행하여 회복된 환자 1례를 체험하였기에 문헌고찰과 함께 보고하였다. 항우울제 trazodone과 함께 chlorpromazine, thioridazine과 같은 항정신병약물이 음경지속발기증의 원인과 관련이 있는 것으로 알려지고 있다. 이러한 약물에 의해 유발되는 음경지속발기증의 기전에 대해서는 알파-아드레날린 차단으로 인한다는 설이 많은 지지를 받고 있다. 치료는 보존적인 치료와 외과적인 치료가 있으며, 외과적인 치료로는 음경해면체 천자와 흡입 세척술 그리고 분로를 만들어 주는 방법들이 있다. 음경지속발기증은 신속한 진단과 치료를 하지 않을 경우 영구적인 발기불능을 초래할 수도 있는 부작용이므로 향정신약물 투여시 이에 대한 관심과 주의를 가져야 할 것이다. Antipsychotic drugs can induce several sexual side effects. Priapism, one of the side effects, is defined as "the persistent abnormal erection of the penis, which usually occurs without sexual desire". There has been an increasing number of reports recently linking the etiology of priapism with psychotropic medication. The drugs known to be associated with priapism are psychotropic drugs such as trazodone, chlorpromazine, thioridazine as well as antihypertensives, anticoagulants and so on. The mechanism of a drug which induces priapism is proposed to be mediated by its alpha-adrenergic blocking effect. Prompt diagnosis and treatment are essential. Priapism is a severe side effect, which can lead to impotence if prompt diagnosis and treatment are not carried out. There are medical and surgical treatments for priapism. The surgical treatments usually involve aspiration, irrigation and the creation of shunt. We report a case of priapism which developed after two years of chlorpromazine treatment. He is a 20-year-old man with schizophrenia. He experienced two times of brief episode of prolonged penile erection before developing intractable priapism. He was treated by shunt operation which showed satisfactory relief of priapism. It seemed by this case that duration and dosage of chlorpromazine were not closely related with priapism. Psychiatrist is needed to give attention to the priapism as one of sexual side effects due to antipsychotics though it is not common.

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