• Title/Summary/Keyword: problem analysis

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Entrepreneurship Education in Internet Business;Current Status & Future Direction (인터넷 창업교육 현황과 발전방안에 관한 연구)

  • Jeong, Jin-Su;Yang, Young-Seok
    • 한국벤처창업학회:학술대회논문집
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    • 2007.11a
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    • pp.143-174
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    • 2007
  • The objective of Starts-up education rears leading company that minimize a risk & connect them with successful idea. Internet Starts-up education is serviced in public & civil parts, it is insufficient to reach successful Starts-up support. This study is targeting on review the present condition of the Internet Starts-up education, research which it sees Internet Starts-up education actual condition investigation through investigation student of education satisfactorily and education contents and the plan to grope an Starts-up education progress coat problem and developmental plan it did. The current events point which has become research result escape first, age of the students of education, followed in educational background and, education motive and education experience presence education satisfactory boat song it appeared in these demand different, base grudge the form which is various it fixed and the education was demanded. Second, currently the department of pedagogy joining in establishment leader against the technical element which is advanced swip, the education reinforcement against an enterprise accomplishment ability back human factor, an enterprise propulsion environment and an enterprise item back enterprise environment element was demanded. Time after support and consulting, completion lifestyle community construction, completion lifestyle for item connection support and the trade name net after third, establishing an enterprise we the king, after toe ring back educating which carries on shoulder the importance of the civil official was embossed. The study which it sees led and like this investigation analysis the education progress for the successful support of the Internet Starts-up and time after connection setup construction it led and the plan which it will put out advancement of Starts-up education and it groped.

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Effects of Stiffness Characteristics of Super-Structure on Soil-Structure Interaction (지반(地盤)에 대한 구조물(構造物)의 상대강도(相對剛度)가 지반(地盤)-구조물(構造物) 상호작용(相互作用)에 미치는 영향(影響))

  • Park, Hyung Ghee;Joe, Yang Hee;Lee, Yong Il
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.5 no.1
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    • pp.123-132
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    • 1985
  • The flexibility of base material gives considerable influences on seismic responses of a structure. The effects of relative stiffness between super-structure and base material on dynamic soil-structure interaction are evaluated by parametric studies. Two 5-story buildings are used for the study; one is shearwall structure with relatively higher fundamental frequency and the other is frame structure with relatively lower fundamental frequency. The structures are modeled as beam-sticks coupled with springs and dashpots representing the base material. Dynamic equilibrium equations of the soil-structure interaction system are sloved by mode superposition method using Rosset modal damping values. Soil-structure interaction effect is found to be major concern in seismic analysis of shearwall structure in most cases while it seldom becomes engineering problem in frame-type structure. It is also found that seismic responses at lower elevation of the super-structure are amplified though they decrease at higher elevation as soil-structure interaction effects of the system increase.

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Assessment of System Reliability and Capacity-Rating of Composite Steel Box-Girder Highway Bridges (합성 강 상자형 도로교의 체계신뢰성 해석 및 안전도평가)

  • Cho, Hyo Nam;Lee, Seung Jae;Kang, Kyoung Koo
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.13 no.2
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    • pp.51-59
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    • 1993
  • This paper develops practical and realistic reliability models and methods for the evaluation of system-reliability and system reliability-based rating of various types of box-girder bridge superstructures. The strength limit state model for box-girder bridges suggested in the paper are based on not only the basic flexural strength but also the strength interaction equations which simultaneously take into account flexure, shear and torsion. And the system reliability problem of box-girder superstructure is formulated as parallel-series models obtained from the FMA(Failure Mode Approach) based on major failure mechanisms or critical failure states of each girder. In the paper, an improved IST(Importance Sampling Technique) simulation algorithm is used for the system reliability analysis of the proposed models. This paper proposes a practical but rational approach for the evaluation of capacity rating in terms of the equivalent system-capacity rating corresponding to the estimated system-reliability index which is derived based on the concept of the equivalent FOSM(First Order Second Moment) form of system reliability index. The results of the reliability evaluation and rating of existing bridges indicate that the reserved reliability and capacity rating at system level are significantly different from those of element reliability or conventional methods especially in the case of highly redundant box-girder bridges.

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A Study on Pain, Discomfort, Depression and Coping Patterns in Chronic Arthritis Patients (만성관절염 환자의 동통, 불편감, 우울과 대응양상의 관계)

  • Mun, Mi-Suk
    • Journal of muscle and joint health
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    • v.1 no.1
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    • pp.71-87
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    • 1994
  • The purpose of this study was to assess pain, discomfort, depression and coping patterns and the relations between these in chronic arthritis patients. The sampling method was a purposive sampling technique. 1) Who have been diagnosed as having chronic arthritis and. 2) Who were at the out patients clinic of rheumatoid arthritis departments of one University hospital in seoul between september, 11, 1993 to september, 18, 1993. The instruments used for this study were Graphic Rating Scales of pain, discomfort level of the activities of daily living(ADL) developed by Lee, Eun Ok and The Beck Depression inventory. The research used to measure coping patterns was a tool developed by the present study researcher. Analysis of data was done frequency, Pearson correlation coefficients, ANOVA, regression and ANCOVA. The results were summerlized as follows ; 1. Female exceed male patients in number and onset of joint pain were more prevalent in the age groups of the 40s and the 50s. The average duration of suffering from the pain were seven years six mounths. 2. The mean pain score : The mean sensory score was 119mm and the affective score was 109mm. 3. The discomfort level of ADL, the mean score was 2.95 out of a possible score of 5.0 and depression syndrome subjects were 62.2%. 4. The coping responses for each pattern were as follows : 1) "Active coping" mean score was 2.28. 2) "Wishful coping" mean score was 2.89. 3) "Receptive coping" mean score was 3.31. 4) "Negative coping" mean score was 1.82. 5. Significant differences were found in age, religion, marriage status and the coping patterns of patients. 1) In the coping pattern of "receptive coping", the score of the age groups of the 50s were higher than that of 20s, and in the coping pattern of "negative coping", the score of the age groups of the 20s were higher than other age groups. 2) In the coping pattern of "wishful coping", the score of the christian were higher than other religion groups. 3) In the coping pattern of "negative coping", the score of the marrieds were lower than other groups. 6. Patients who scored low on factor 2, wishful coping, were much more likely to report having pain sensory than patioets scoring high on this factor. 7. Patients who scored high on factor 4, negative coping, were significantly more likely to report having pain sensory than patients scoring high on this factor. Consider overall, chronic arthritis patients report using a wide varity of strategies, certain strategies such as receptive, wishful and active coping are used frequently, whereas other strategies such as negative coping are rarely used. One of the most important finding of present study is that the reported use of coping strategies is related to adjustment to a chronic pain problem. The present study suggests that negative coping is related to poor emotional adjustment as assessed by depression, but not pain ratings. Considered overall, this pattern of findings suggests that counseling patients to decreased their use of negative coping may be useful. The present study has a number of limitations. First, the sample is restricted to chronic arthritis patients. Weather chronic pain patients suffering from other types of pain syndromes use similar coping strategies needs to be determined in subsequent research. Second, the tool of coping pattern must be studied further to obtain reliability.

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Clinical Study of 25 Interstitial Cystitis Patients (간질성 방광염 환자 25예에 대한 임상적 고찰)

  • Son, Gi-Jeong;Oh, Hyeon-Jo;Lee, Jung-Gon;Nam, Seung-Kyu;Kim, Chul-Jung;Cho, Chung-Sik
    • The Journal of Internal Korean Medicine
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    • v.33 no.2
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    • pp.222-230
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    • 2012
  • Background : Interstitial cystitis is a disorder of the bladder characterized by urgency and frequency of urination, and pelvic pain. The cause of interstitial cystitis is not clear. Modern medical treatments include behavioral therapy, medication, intravesical infusion therapy, and surgical treatment, but the goal of treatment is based on symptom relief rather than a cure. According to a recent report, in an animal model, oriental medicine treatment, Yukmijihwang-tang improved the symptoms of interstitial cystitis. However, clinical studies and experimental research are lacking. Objectives : In this study, We investigated Chuknyojetong-tang, acupuncture, moxibustion and bee venom effect on interstitial cystitis. Methods : We targeted 25 patients diagnosed with interstitial cystitis at the university hospital and treated them for more than one month. We used acupuncture, Chuknyojetong-tang, and bee venom. The effects were evaluated using ICSI and ICPI at the begin of treatment and at the end of treatment. Results : All of the 25 patients were female, average age was $53.3{\pm}13.5$ years, and the average month of disease-duration was $69.0{\pm}59.8$. The duration of treatment was $8.0{\pm}5.4$ months, and 60% of patients were improved. After treatment, we used correlation coefficient method, multiple regression analysis. ICSI difference increased as treatment period increased. ICPI difference increased as age decreased. Total difference also increased as treatment period increased. These results imply that treatment effect was improved. Conclusions : These findings suggest that oriental medicine therapy using Chuknyojetong-tang, acupuncture, moxibustion, and bee venom would be very effective on interstitial cystitis.

Prediction Model of Fatigue in Women with Rheumatoid Arthritis (여성 류마티스 관절염 환자의 피로 예측 모형)

  • Lee, Kyung-Sook;Lee, Eun-Ok
    • Journal of muscle and joint health
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    • v.8 no.1
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    • pp.27-50
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    • 2001
  • Rheumatoid arthritis is a chronic systemic autoimmune disease. Although the joints are the major loci of the disease activity, fatigue is a common extraarticular symptom that exists in all gradations of rheumatoid arthritis. Fatigue is defined as a subjective sense of generalized tiredness or exhaustion and has multiple dimensions. Therefore fatigue is a common and frequent problem for those with rheumatoid arthritis. In fact, 88-100% of individuals with rheumatoid arthritis experience fatigue. Especially the degree of fatigue is higher in women than men with rheumatoid arthritis. Despite the importance of fatigue among the patients with rheumatoid arthritis, the mechanism that leads to fatigue in rheumatoid arthritis is not completely understood. This study was intended to test and validate a model to predict fatigue in women with rheumatoid arthritis. Especially it was intended to identify the direct and indirect effects of the variables of pain, disability, depression, sleep disturbance, morning stiffness, and symptom duration to fatigue. Data were collected by questionnaires including Multidimensional Assesment of Fatigue(Tack, 1991), numeric scale of pain, graphic scale of joints, Ritchie Articular Index, Korean Health Assessment Questionnaire(Bae, et al., 1998), Inventory of Function Status(Tulman, et al., 1991), Center for Epidemiologic Studies-Depression, and Korean Sleep Scale(Oh, et al 1998). The sample consisted of 345 women with a mean duration of rheumatoid arthritis for 10.06 years and a mean age of 49.64 years. SPSS win and Win LISREL were used for the data analysis. Structural equation modeling revealed the overall fit of the model. Pain predicted fatigue directly and indirectly through disability, depression, and sleep disturbance. Disability, sleep disturbance predicted fatigue only directly, while depression only indirectly through disability and sleep disturbance. Also morning stiffness and symptom duration predicted fatigue through disability and depression. All predictors accounted for 65% of the variance of fatigue. Depression, pain, and disability predicted sleep disturbance. Depression had reciprocal relationship with disability and they both were predicted by pain directly and indirectly. In summary, pain, depression, disability, sleep disturbance, morning stiffness, and symptom duration contributed to the fatigue of patients with rheumatoid arthritis. The best predictor of fatigue was pain. This finding indicates that the modification of pain, depression, disability, sleep disturbance, morning stiffness could be nursing intervention for relief or prevention of fatigue.

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The study of Defense Artificial Intelligence and Block-chain Convergence (국방분야 인공지능과 블록체인 융합방안 연구)

  • Kim, Seyong;Kwon, Hyukjin;Choi, Minwoo
    • Journal of Internet Computing and Services
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    • v.21 no.2
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    • pp.81-90
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    • 2020
  • The purpose of this study is to study how to apply block-chain technology to prevent data forgery and alteration in the defense sector of AI(Artificial intelligence). AI is a technology for predicting big data by clustering or classifying it by applying various machine learning methodologies, and military powers including the U.S. have reached the completion stage of technology. If data-based AI's data forgery and modulation occurs, the processing process of the data, even if it is perfect, could be the biggest enemy risk factor, and the falsification and modification of the data can be too easy in the form of hacking. Unexpected attacks could occur if data used by weaponized AI is hacked and manipulated by North Korea. Therefore, a technology that prevents data from being falsified and altered is essential for the use of AI. It is expected that data forgery prevention will solve the problem by applying block-chain, a technology that does not damage data, unless more than half of the connected computers agree, even if a single computer is hacked by a distributed storage of encrypted data as a function of seawater.

A Study on the Development of Floor-Fixed Standpipe Sway Brace for Narrow Space (협소공간전용 바닥고정형 입상관 흔들림방지버팀대 개발에 관한 연구)

  • Jin, Se-Young;Choi, Su-Gil;Park, Sang-Min;Yeon, Tae-Young;Kim, Chang-Su;Kim, Si-Kuk
    • Fire Science and Engineering
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    • v.34 no.1
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    • pp.47-54
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    • 2020
  • This paper proposes a solution to the problems of constructing and installing sway braces for existing standpipes in narrow spaces and pits. The study develops a floor-fixed sway brace for a narrow space that can support the ground area under horizontal seismic loads (X-axis, Y-axis) as well as vertical seismic loads (Z-axis). The results of structural analysis using SolidWorks simulation showed that the eccentric load was generated in the first design according to the anchored position along the vertical direction, and the problem of exceeding the allowable stress of the material along the horizontal and vertical directions. In the second design model, deformation caused by the eccentric load along the vertical direction, similar to the first design model, did not occur. The maximum strain rate was 0.17%, which is approximately 12.84% less than the first design model (Maximum strain rate of 13.01%). It was confirmed that the structural stability and durability improved. Compressive and tensile load testing of the prototypes showed that all of them meet the performance criteria of the standard.

A Study on the Characteristics of Creativity Factors Found in Elementary and Middle School Creative Gifted Student Selection Test (초.중학생 창의성 영재 선발 검사에 나타난 창의성 요인별 특성 연구)

  • Son, Chung-Ki;Kim, Myeong-Cheol
    • Journal of Gifted/Talented Education
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    • v.17 no.2
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    • pp.307-337
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    • 2007
  • The purpose of this study is to verify the validity of a creativity measurement tool and to discover the creativity characteristics of creative gifted students by assessing the difference in the creativity characteristics of creative gifted students, who were selected from gifted students in elementary and middle schools through the Torrance Test of Creative Thinking(TTCT), according to school level and the type of the students (gifted student in mathematics, gifted student in science). To this research purpose, creative gifted students were selected by the Torrance Test of Creative Thinking(TTCT) on 594 students, who had applied for super gifted education, from 17 gifted students institutes under the jurisdiction of Jeollabukdo office of education, Then, t-tests and multiple regression analysis were performed to analyze the creativity factors between elementary students and middle school students and between mathematics-gifted students and science-gifted students. From the research, the following results were obtained. Although TTCT is effective in distinguishing gifted students with and without creativity, correlation coefficient values between creativity factors(the correlation coefficients between 'fluency' and 'originality' and between 'fluency' and 'elaboration' were .78 and .50 respectively) suggested the possibility of low uniqueness of creativity factors. In addition, compared with elementary students, middle school students showed significantly lower fluency (circles), elaboration(picture construction, picture completion), and the abstractness of titles(picture structure). In the meantime, science-gifted students displayed significantly higher originality(picture construction), and elaboration(picture construction, picture completion, circles) than mathematics-gifted students. Therefore, continuous study is required to enhance the validity of the test for the selection of creativity gifted students. Besides, efforts should be made to find ways to enhance the creativity of gifted students and to resolve the problem of decreasing creativity with student academic level increasing.

Wave Response Analysis for Pontoon-type Pier: Very Large Floating Structure (폰툰형 초대형 부유체식 부두의 파랑응답해석)

  • Lee, Sang-Do;Park, Sung-Hyeon;Kong, Gil-Young
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.22 no.1
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    • pp.82-89
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    • 2016
  • In this study, we proposed a pier of pontoon-type, "Very Large Floating Structure" (VLFS), with the length of 500m, breadth of 200 m and height of 2 m in Yeosu domestic port. Since this structure ought to endure wave loads for long periods at sea, it is essential to analyze the wave response characteristics. Direct-method is used to analyze the fluid-structure problem and the coupled motion of equation is used to obtain response results. The structural part is calculated by using finite element method (FEM) and the fluid part is analyzed by using boundary element method (BEM). Dynamic responses caused by the elastic deformation and rigid motion of structure are analyzed by numerical calculation. To investigate response characteristics of the pier in regular waves, several factors such as the wavelength, water depth, wave direction and flexural rigidity of structure are considered. As a result, wave response of pier changed at the point of $L/{\lambda}$ 1.5 and represented the torsional phenomenon according to the various incident waves. And the responses showed increasing tendency as the water depths increase at the incident point in case of $L/{\lambda}=8.0$ and peak point of vertical displacement amplitude moved from side to side as the flexural rigidity of structure changes.