• Title/Summary/Keyword: tranquility

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Harbor Tranquility Analysis with the Reflection-Transmission Boundary Condition of Floating Breakwaters (부유식 방파제의 반사-투과 경계조건을 적용한 항만 정온도의 해석)

  • 전인식;최민호;심재설;오병철
    • Journal of Korean Society of Coastal and Ocean Engineers
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    • v.14 no.1
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    • pp.76-85
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    • 2002
  • The floating breakwater generally has an excellent water exchanging capability, but with some lowering harbor tranquility due to the wave transmission underneath floating body. In the initial stage of design, it is thus required to investigate several alternatives of breakwater layout for their performance of harbor tranquility. The present study aims to formulate a sort of reflection-transmission boundary condition of floating breakwater so that the existing numerical method using time dependent mild slope equation can still be applied to the case of floating breakwaters. The two and three dimensional tests were each performed to demonstrate the performance of the boundary condition. It was found that the reflection and transmission characteristics around the breakwater were well reproduced by the boundary condition. Finally, the reflection-transmission boundary condition were applied to a floating breakwater installed in an imaginary harbor with an irregular shape and bottom topography. The results surely showed that the present numerical method can effectively used in practical works related to the real sea construction of floating breakwaters.

An Experimental Study on the improvement of harbor tranquility by Multi-cylinder piles Structure (다원주 파일군 구조물에 의한 항내 정온도 향상에 관한 실험적 연구)

  • Lee, Sang-Hwa;Jang, Eun-Cheul;Jeong, Dong-Hwa
    • Journal of Korean Society of Coastal and Ocean Engineers
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    • v.19 no.1
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    • pp.66-72
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    • 2007
  • In order to control waves in coastal zones effectively, multi-cylinder piles as the economical structures are suggested. A three dimensional hydraulic model experiment was performed to investigate the hydraulic characteristics of the structure. An experimental study was carried out research the effect of wave control and harbor tranquility through the wave height analysis for the existing concrete wave breaker and the structure with acrylic multi-cylinder piles type at the same location. In the results, the effective order of harbor tranquility is shown as the wave breaker > the staggered arrangement of multi-cylinder piles > the regular arrangement of multi-cylinder piles.

The Hydro-Environmental Characteristics of Port Facilities around the Sea of Cheju Island (제주해역 항만시설물의 수리환경적 특성에 관한 연구)

  • 정태욱;김종인;류청로
    • Journal of Ocean Engineering and Technology
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    • v.14 no.3
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    • pp.1-10
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    • 2000
  • In order to effective manage the construction, disaster prevention plan and the harbor tranquility control, meteorological and sea-state characteristics around Cheju Island have been analyzed. Using results and damage examples of the port facilities under severe sea conditions, a reasonable construction control plan considering the regional characteristics of the sea-state and winds was proposed. That is, in northern part of Cheju Island, the construction work is affected mainly by the winter storms, while the typhoon mainly affects the southern part port facilities during summer to Autumn. Considering their typical characteristics, it is strongly suggested that the main construction work should be carried out during April to July in the northern part, and it should be made during October to next July in the southern part of the island. A permeable TTP mounded breakwater was constructed to protect severe waves as a temporal structure under the long-term development plan in Sogipo port. The transmission characteristics of the structure was discussed using the experimental results. The results show that the transmission coefficient $K_{t}$ is over 20% of incident waves, which cause many problems in the cargo handling in relation to harbor tranquility. In conclusion, this kind of permeable structure can be used only as a temporal structure for the disaster prevention under the construction process. It causes many problems in harbor tranquility if it is used as a permanent harbor structures.s.

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Marina Development Impact on the Tranquility of Small Coast Harbor

  • Lee, Dong-Hyun;Lee, Joong-Woo;An, Hyo-Jae;Kim, Kang-Min
    • Journal of Navigation and Port Research
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    • v.38 no.6
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    • pp.673-681
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    • 2014
  • Due to the increased demand for safety and security requirements on the port infrastructure, the harbor tranquility is one of the important parameter in the mooring basin of harbor. It relates keenly to berthing/unberthing and cargo handling works but also it is an important indicator to get the minimum water area as the safe refuge. Hupo harbor is a national coastal harbor located in east coast of Korea and a development plan for a new marina near the entrance is being carried out including berth layouts, breakwater extensions, 300m marina berths, dredging and land reclamation works. The new plan will impact on calmness of the existing port. Therefore, it is necessary to analyze in complex the variation of wave height and direction caused by wave refraction, diffraction, shoaling and reflection from the incident waves from outside the harbor. In order to check the calmness inside a harbor, the numerical models are being used currently need fundamental reviews according to the difference of results which depend on their respective features. In this study, hence, it was introduced the validity of numerical models by comparing the computational results with the hydraulic model experiment. The current investigations contribute to the existing development recommendations and provide further solutions for port planning.

Inner harbour wave agitation using boussinesq wave model

  • Panigrahi, Jitendra K.;Padhy, C.P.;Murty, A.S.N.
    • International Journal of Naval Architecture and Ocean Engineering
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    • v.7 no.1
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    • pp.70-86
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    • 2015
  • Short crested waves play an important role for planning and design of harbours. In this context a numerical simulation is carried out to evaluate wave tranquility inside a real harbour located in east coast of India. The annual offshore wave climate proximity to harbour site is established using Wave Model (WAM) hindcast wave data. The deep water waves are transformed to harbour front using a Near Shore spectral Wave model (NSW). A directional analysis is carried out to determine the probable incident wave directions towards the harbour. Most critical threshold wave height and wave period is chosen for normal operating conditions using exceedence probability analysis. Irregular random waves from various directions are generated confirming to Pierson Moskowitz spectrum at 20m water depth. Wave incident into inner harbor through harbor entrance is performed using Boussinesq Wave model (BW). Wave disturbance experienced inside the harbour and at various berths are analysed. The paper discusses the progresses took place in short wave modeling and it demonstrates application of wave climate for the evaluation of harbor tranquility using various types of wave models.

Emotional Tree Using Sensitivity Image Analysis Algorithm (감성 트리를 이용한 이미지 감성 분석 알고리즘)

  • Lee, Yean-Ran;Yoon, Eun Ju;Im, Jung-Ah;Lim, Young-Hwan;Sung, Jung-Hwan
    • The Journal of the Korea Contents Association
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    • v.13 no.11
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    • pp.562-570
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    • 2013
  • Image of emotional pleasure or displeasure, tension or emotional division of tranquility in the form of a tree is evaluated by weighting. Image representative evaluation of the sensitivity of the brightness contrast ratings 1 car pleasure, displeasure or stress or emotional tranquility and two cars are separated by image segmentation. Emotion Recognition of four compared to the numerical data is measured by brightness. OpenCV implementation through evaluation graph the stress intensity contrast, tranquility, pleasure, displeasure, depending on changes in the value of the computing is divided into four emotional. Contrast sensitivity of computing the brightness depending on the value entered 'nuisance' to 'excellent' or 'stress' to 'calm' the emotional changes can give. Calculate the sensitivity of the image regularity of localized computing system can control the future direction of industry on the application of emotion recognition will play a positive role.

Yoga Psychology and Positive Emotions (요가심리학과 긍정적 정서)

  • Ok-Kyeong Cho
    • Korean Journal of Culture and Social Issue
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    • v.15 no.1
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    • pp.227-239
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    • 2009
  • The purpose of this study was to show that yoga psychology aims to actualize the positive potentials in the depth of human mind with the perspective of body-emotion-mind-spirit integration. This approach is described in the context of modern positive psychology. For this purpose, the Self-realization of yoga psychology is discussed, which is to develop one's higher self as a center of psyche apart from one's psychological growth or maturation. An individual can experience positive emotions such as pleasure, joy, happiness and ecstasy through the typical yoga technique of concentration. Happiness is one of the main issues of positive psychology, but yoga psychology called it "ānanda" and divided it further into seven types. The positive emotions of positive psychology seem to be equivalent to positive states of mind in yoga psychology. But yoga regards calmness, tranquility, nonattachment and transcendence as the most valuable virtues for the full actualization of human potentials. From the perspective of yoga psychology, the tranquil state of mind is the wonderful fruit of long and arduous yoga practices. It is the calm and neutral state of mind which is free from all the turmoils of everyday life. Tranquility is beyond the scope of modern positive psychology's issues, but it offers some precious insights to them.

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Improvement of the Estimation Method for Harbor Tranquility of Fishery Harbor (어항의 항내 정온도 평가사례 및 개선방안)

  • Tac, Dae-Ho;Kim, Gui-Young;Jeon, Kyeong-Am;Lee, Dae-In
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.21 no.6
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    • pp.637-644
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    • 2015
  • In order to estimate harbor tranquility, it is needed to simulate wave propagation in a harbor by using both methods under abnormal wave condition and normal wave condition. The problem is the latter case was not simulated in the statement for the Sea Area Utilization Conference. As harbor calmness about normal wave condition has the same meaning as harbor serviceability, in order to assess harbor tranquility, it is needed to survey wave data for long periods but the survey was not done by reason of a lack of budget and shortage of time for plan. It is more important to make a plan for minimizing environmental impact and to assess an improvement of fisherman's living environmental as the assessment of the harbor serviceability is related with the propriety of the plan. In order to assess it, it is needed to understand it clearly, survey for long period of wave data, and clarify the procedure for computation of it. And also providing wave data like tide and tidal current data from KHOA (Korea Hydro graphic and Oceanographic Agency) and making a guideline for assessing it are needed.

기도와 찬송이 통증과 불안, 외로움, 안녕감에 미치는 영향

  • Kim Su-Ho;Kim Sin-Su;Kim Jae-Song;Park Hui-Myeong;O Seung-Hun;Won Ju-Hui;Lee Seong-Ok;Lee Chae-Yeong
    • Korean Journal of Hospice Care
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    • v.5 no.1
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    • pp.74-81
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    • 2005
  • Purpose: The purpose of this study is to help apply spiritual care in clinics by testing whether spiritual support like prayer and praise, which is appled on a patient who has been cared for by Facility Hospice can have an effect on their physical pain, emotional anxietv, loneliness and well being. Method: This research was done on a subject patient who had been hospitalized in Saemmul from Jan, 2002 to June, 2003, and who could easily communicate. Questionnaire of quality of life, they had this test from the date of admission into the hospital 1week, 3week, 5week later. The Target was 182 people for the hospital data, 124 people after one week, 84 people after 3 weeks and 54 people after for 5 weeks later. For statistics, SPSS for Window(SPSS inc. ver.10), student T-test and one way ANOVA were used. The interrelation between pray and pain was analyzed by the "Pearson correlation". In case where the P-value was below 0.05, we concluded it had statistical-value. Results: When we compared both the party which had a low degree of peace by prayer and praise and the B party which had the highest degree, B party had an increasing tendency for less anxiety and loneliness and more well-being. Each of the data 0, 1, 3 and 5 week showed visible difference between both parties. Conclusion: First, in case that a late cancer patient is hospitalized, the difference for tranquility and pain control by prayer and praise is not noticeable. While, 1 and 3 weeks later, the difference is visible, so we concluded the relationship between the cancer patient's spiritual tranquility and physical pain are closely related with each other. Also the patients who are in spiritual peace by prayer and praise can control the pain better than the other patients. Second, because the patient who can feel calm from the data of being admitted into the hospital is mentally calm, both party's difference is noticeable in each period of the 1, 3 and 5th week. Compared with other patients, the object patients who have spiritual tranquility will have less anxiety and loneliness and more tranquility.

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Analysis on the Harbor Tranquility by Boundary Integral Equation Method (경계적분 방정식법에 의한 항내 청정도 해석)

  • 이철응;편종근;이길성
    • Journal of Korean Society of Coastal and Ocean Engineers
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    • v.3 no.4
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    • pp.223-234
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    • 1991
  • In this paper, the harbor tranquility problem is analysed by an improved boundary integral equation method. The effect of the diffracted wave transformation induced by the breakwater and structures located at a harbor mouth is considered. Partial reflection concept is also used to consider energy dissipation effects. The present model is verified by comparing the results of the model for rectangular and semi-circular harbors with the analytic solutions. they show a reasonable agreement. Also the wave height distribution of the HUPO harbor computed using the present model agree well to those from the previous hydraulic model tests. It also shows a good agreement with the results from the time-dependent mild slope equation model.

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