• Journal of Korean Academy of Nursing
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• v.28 no.1
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• pp.171-183
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• 1998

The purpose of this study was to identify the incidence of urinary incontinence in adult women and to identify factors related to life style and sexual intercourse that were related to incontinence. The sample consisted of 1,065 women living in Seoul or one of five provinces. Data for this study were collected from January 16 to June 23 using structured questionnaires. The Urinary Symptom Questionnaire developed by Jackson and a demographic questionnaire were used to collect the data. The data were analyzed using frequency, percentage with an SPSS/PC$^{+}$ program. The major finding are as follows : 1. The distribution of age of subjects was as follows : 20-29(10.1%), 20-39(17.8%), 40-49(27.3%). 50-59(22.3%), 60-69(12.9%), 70-79(6.1%). 80-89(2.8%), more than 90(0.6%). The frequency of normal delivery, 0(155%), 1-2(36.0%), 3-4(29.2%), 5-6(13.0%). more than 7(6.3%). The rate of subjects with menopause was 40.8%. 2. It was reported that 50.7% of the subjects experienced urinary incontinence with stress, mixed. and urgency incontinence being 49.8%, 43.4%, 6.8% respectively. 3. The lower urinary symptoms and incidence with urinary incontinence were as follows : Daily frequency. 22.3%, nocturia. 40.8%, urgency, 71.2%, bladder pain 47.8%, unexplainned incontinence, 32.4%, noctural incontinence, 16.1%, and frequency of incontinence, 37.7%. In term of quantity of incontinence, drop/pants damp, 29.5%, dribble/pants wet, 20.5%, flood or soaking through to outer clothing, 1.7%, and flood or running down legs or onto floor, 0.2%. 4. The symptoms related to sexual intercourse and incidence of urinary incontinence were as follows : dry vagina, 39.1%, sex life trouble, 10.8%, pain during sexual intercourse, 27.4%, and urine leakage during sexual intercourse. 8.8%. 5. Life style problems related to urinary incontinence were as follows : fluid intake restriction, 20.0%, affected daily task, 24.5%. avoidance of placess and situations, 35.0%, interference in physical activities, 30.6%, interference in relationships with other people. 19.0%. interference in relationships with husband/companion, 8.1%, and time after attack of urinary symptoms, 76.9%. In term of the feeling about the rest of their lifves the women reported : perfectly happy, 11.3%. pleased, 16.9%. mostly satisfied, 20.2%, mixed feelings, 21.0%, mostly dissatisfied, 21.0%, very unhappy 8.5%, and desperate. 1.0%. In conclusion. this study was a preliminary study to provide nursing practices guidelines for incontinence in adult women. Nurse working with adult women should develop and provide adequate care for these women.n.

• Journal of the Korean Geotechnical Society
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• v.19 no.2
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• pp.227-236
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• 2003

The evaluation of the reliable strength and deformation characteristics of weathered granite masses is very important for the design of geotechnical structure under working stress conditions. Various types of laboratory test such as triaxial compression test can be performed to determine the strength parameters. However, it is very difficult to obtain the representative undisturbed samples on the site and also the rock specimen cannot represent rock mass including discontinuities, fracture zone, etc. This study aims to investigate the strength and deformation characteristics of granite masses corresponding to its weathering and develop a practical strength parameter evaluation method using the results of PMT. To predict weathering intensity and strength parameters of the weathered granite masess in the field, various laboratory tests and in-situ tests including field triaxial test and PMT are carried out. Based on the results of weathering index tests, the classification method is proposed to identify the weathering degree in three groups for the weathered granite masses. Using the analytical method based on the Mohr-Coulomb failure criteria and the cavity expansion theory, the strength parameters of rock masses were evaluated from the results of PMT. It shows that weathering intensity increases with decreasing the strength parameters exponentially. The strength parameters evaluated with the results of PM almost coincide with the results of field triaxial test.

• Journal of the Korean Society of Marine Environment & Safety
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• v.25 no.7
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• pp.936-944
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• 2019

Submarines, which have been called an invisible force, are strategic underwater weapon systems that perform missions such as anti-surface warfare, anti-submarine warfare, and high payoff target strikes with the advantage of underwater covertness. A submarine should be able to withstand the hydrostatic pressure of the deep sea. In this respect, the submarine pressure hull, as the main structural system to resist the external pressure corresponding to the submerged depth, should ensure the survivability from hazards and threats such as leakage, fires, shock, explosion, etc. To do this, the initial scantling of the submarine pressure hull must be calculated appropriately in the concept design phase. The shape of the aft transition ring varies according to its connection with the submarine aft end conical structure, pressure hull cylindrical part, and non-pressure hull of the submarine; the design of the aft transition ring should not only take into account stress flow and connectivity but also the cost increase due to the increased man-hours of its complex geometry. Therefore, trade-off studies based on the four different shapes of the aft transition ring are carried out considering both the review of the structural strength through nonlinear finite element analysis (FEA) and economic feasibility by reviewing the estimations of the manufacturing working days and material costs. Finally, the most rational structural aft transition ring shape for a submarine amongst four reviewed types was proposed.

• Journal of Energy Engineering
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• v.24 no.1
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• pp.114-122
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• 2015

In the high convective gas flow condition, irregular shaped water waves from which droplet entrainment occurs are generated under horizontally stratified two-phase flow condition. KAERI proposed a new mechanistic droplet entrainment model based on the momentum balance equation consisting of the shear stress, surface tension, and gravity forces. However, this model requires correlation or experimental data of several physical parameters related to the wave characteristics. In the present study, we tried to measure the physical parameters such as wave slope, wave hypotenuse length, wave velocity, wave frequency, and wavelength experimentally. For this, an experiment was conducted in the horizontal rectangular channel of which width, height, and length are, respectively, 40 mm, 50 mm, and 4.2 m. In the present test, the working fluids are chosen as air and water. The PIV technique was applied not only to obtain images for phase interface waves but also to measure the velocity field of the water flow. Additionally, we developed the parallel wire conductance probe for the confirmation of wave height from PIV image. Finally, we measured the physical parameters to be used in the validation of new droplet entrainment model.

• Journal of the Korea institute for structural maintenance and inspection
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• v.20 no.2
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• pp.122-130
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• 2016

The past few decades of industrialization enabled human-centered stream developments, which in turn resulted in constructing straight or covered streams, which are used only for sewage disposal purpose. However, these types of streams have become the cause of flood damages such as localized heavy rain. In response, various construction methods have been implemented to prevent stream and embankment damages. However, regulations regarding these measures only lay out minimum standards such as the height of slopes and the minimum angle of inclination. Moreover, examination of tractive force, the most crucial factor in preventing flood damage, is nonexistent. Therefore, this study evaluates various tractive forces by implementing a porous concrete tetrapod at a full scale artificial stream for experiment, controlling the rate of inflow, and measuring the velocity and depth of the stream under different experiment conditions. The test results of the compressive strength, and porosity and density of rock of the porous concrete tetrapod was between 16.6 and 23.2 MPa, and the actual measurement of air void was 10.1%, thus satisfying domestic standard. The result of tractive force experiment showed a limiting tractive force of $47.202N/m^2$, not satisfying the tractive force scope of $67N/m^2$ the stream design working expertise proposes. However, there was neither damage nor loss of blocks and hardpan. Based on previous researches, it can be expected that there will be resistance against a stronger tractive force. Therefore, it is necessary to conduct another experiment on practical limiting tractive force by adjusting some experimental conditions.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.34 no.5
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• pp.263-270
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• 2021

In this study, a reliability-based design optimization of a 130-m class fixed-type offshore platform, to be installed in the North Sea, was carried out, while considering environmental, material, and manufacturing uncertainties to enhance its structural safety and economic aspects. For the reliability analysis, and reliability-based design optimization of the structural integrity, unity check values (defined as the ratio between working and allowable stress, for axial, bending, and shear stresses), of the members of the offshore platform were considered as constraints. Weight of the supporting jacket structure was minimized to reduce the manufacturing cost of the offshore platform. Statistical characteristics of uncertainties were defined based on observed and measured data references. Reliability analysis and reliability-based design optimization of a jacket-type offshore structure were computationally burdensome due to the large number of members; therefore, we suggested a method for variable screening, based on the importance of their output responses, to reduce the dimension of the problem. Furthermore, a deterministic design optimization was carried out prior to the reliability-based design optimization, to improve overall computational efficiency. Finally, the optimal design obtained was compared with the conventional rule-based offshore platform design in terms of safety and cost.

• Journal of the Korea Convergence Society
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• v.10 no.10
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• pp.161-171
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• 2019

This study aims the meta analysis based on the results of the empirical studies related to Job of life-long educators who are working in life-long education center, and the relationship between variables. In order to deliver this objective, articles published in domestic journals from December 2000 to April 2019 were collected, and total of 14 studies and 170 sub data were coded. With those data, the meta-analysis was executed by CMA(Comprehensive Meta Analysis) 3.0 program. The results of this meta-analysis study are as follows. First, the overall effect size associated with Job of life-long educators was 0.767, indicating between medium and large effect size. Second, the effect sizes of dependent variables that are influenced by job of life-long educators were Organization immersion, Job performance, Job satisfaction, and Job stress in order. Third, the effect size of Individual focus variables study was almost twice as big as that of mutual relation focus variables. The implications of this study were suggested based on the analysis results to provide the directivity about how we consider life-long educators related to their job.

• Korean Journal of Plant Resources
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• v.32 no.2
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• pp.201-206
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• 2019

Alien invasive species are introduced with or without intent and spreading all over Korea. They are known to have negative effects on biodiversity such as economic and environmental damage and causing decrease or loss of native species. The habitats like wetland, reservoir and riverside are especially in danger of being invaded by alien species due to stress and disturbance. Therefore, Korea National Arboretum is steadily working on research and studies on managing alien invasive species. This research aims to collect basic information of Ludwigia peploides subsp. montevidensis (Spreng.) P.H. Raven which was found near riverside in Suwon-si and is concerned to become an invasive alien species. We expect the description, diagram and pictures of this taxon will be helpful for early detection and effective management.

• Journal of Digital Convergence
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• v.17 no.5
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• pp.1-10
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• 2019

The purpose of this study is to verify the effect of the compaction and virtue experienced by police officers in the organization on positive emotion and, second, to demonstrate the effect of positive emotion on the organization uniformity, which is subordinate variable. Third, we intend to verify the mediated effect of positive emotion in the relationship between compassion and organization uniformity, and fourthly, to demonstrate the coordination effect of collective self-esteem in the relationship between positive emotion and organization identicalness. Sampling of this study was conducted on 353 male and female police officers working at police stations belonging to the National Police Agency and used these samples for hypothesis testing. Studies have confirmed that the compaction and virtue experienced by police officers have a positive effect on positive emotion, and that positive emotion has a positive effect on the phenomenon of tissue co-ordination. And it has been shown that positive emotion plays a full role in the relationship between compassion, virtue and organizational co-ordination, and that positive emotion and collective self-esteem plays a controlling role in the relationship with organizational co-ordination. The theoretical implications of this study will contribute to creating a positive organizational culture by maintaining a strict hierarchical relationship and spreading the compaction and virtuous behavior to police organizations with high task stress.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.12
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• pp.639-650
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• 2020

The purpose of this study was to investigate perceptions of mental health literacy, mental health status, mental health welfare center and mental health business of local public officials. The participants were 762 public officials working in G city. Data were collected from October 1, to October 26, 2019 using structured questionnaires, and IBM SPSS 24.0 statistics program was used for the analysis. As a result, the mental health status of the subjects was the most severe stress 28.1%. The mental health literacy score of the subjects was 40.99 points and mental health status was 1.66 points. And 46.6% of the respondents had never heard of mental health welfare center. As for mental health business, 57.0% had never heard of mental health counseling, and the most common route for gaining information on mental health or mental illness was TV at 65.2%. In addition, 85.0% answered that an increase in the government budget for the management of mental health and illness was necessary. Therefore, it is necessary to strengthen the continuous education and promotion for mental health improvement and the development of customized mental health promotion programs suitable for the public officials level through of the community mental health welfare center.