• 제목/요약/키워드: Power law relationship

검색결과 135건 처리시간 0.039초

한국민요에 나타난 고부관계 연구 (A study of Relationships Mother-in-low and Danghter-in-Law As Portrayed in Korean Folk Song)

  • 김태현
    • 가정과삶의질연구
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    • 제15권4호
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    • pp.55-64
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    • 1997
  • This study is a thesis of the relationship between mother-in-law and daughter-in-law in a family based on the Korean family system. This is done by analysing how the traditional social system and the style of living are reflected in korean folk songs. This I believe is a necessity in order to understand the emotions and ideas of the word 'family' of Korea and to improve the state of the relations between mother-in-law and her daughter-in-law. I have divided this into 4 essential study points. First the family system illustrated in korean folk songs are mainly father centered family system. It caused a male-oriented society and women's subordination. Second, the relationship between mother-in-law and her daughter-in-law illustrated in folk songs are mostly vertical subordinate. This is easily described as a lord and servant relationship. Third the state of relationship reflected in the folk songs from a daughter-in-law's point of view is obedience to her husband's family nostal ia to her family desperation and opposition. Lastly the state of relationship from mother in law's point of view are discord cruel treatment the rule and power which herself carry.

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Power-law exponents of runoff-drainage area relationships vary with flow occurrence frequency: Observations from Korean rivers

  • Kim, JongChun;Paik, Kyungrock
    • 한국수자원학회:학술대회논문집
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    • 한국수자원학회 2015년도 학술발표회
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    • pp.246-246
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    • 2015
  • Runoff at any given location along a stream can be expressed as a function of its upstream area. The runoff-drainage area relationship can be well expressed as power-law (Brush, 1961) with its exponent, ranging as high as unity (e.g., Stall and Fok, 1968) and as low as 0.5 in natural rivers. Here, we study the runoff-drainage area relationships for Han River and Nakdong River, Korea. We find that the relationships follow power-law and their exponents are highly related with occurrence frequency of flow. To support this, we analyze flow frequency with historical data measured over decades. Findings in this study can broaden our understanding on mechanisms behind the catchment response to runoff.

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A practical power law creep modeling of alloy 690 SG tube materials

  • Lee, Bong-Sang;Kim, Jong-Min;Kwon, June-Yeop;Choi, Kwon-Jae;Kim, Min-Chul
    • Nuclear Engineering and Technology
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    • 제53권9호
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    • pp.2953-2959
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    • 2021
  • A new practical modeling of the Norton's power law creep is proposed and implemented to analyze the high temperature behaviors of Alloy 690 SG tube material. In the model, both the stress exponent n and the rate constant B are simply treated as the temperature dependent parameters. Based on the two-step optimization procedure, the temperature function of the rate constant B(T) was determined for the data set of each B value after fixing the stress exponent n value by using the prior optimized function at each temperature. This procedure could significantly reduce the numerical errors when using the power law creep equations. Based on the better description of the steady-state creep rates, the experimental rupture times could also be well predicted by using the Monkman-Grant relationship. Furthermore, the difference in tensile strengths at high temperatures could be very well estimated by assuming the imaginary creep stress related to the given strain rate after correcting the temperature effects on the elastic modulus.

변화하는 한국사회에 있어서 고부 갈등에 관한 연구 (A Study of Conflict between Monther-in-law and daughter-in-law in the Changing Korean society with Special reference to Pusan Area)

  • 고정자
    • 대한가정학회지
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    • 제26권4호
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    • pp.129-160
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    • 1988
  • The purpose of the present study is to understand the change in the relation between mother-in-law and daughter-in-law according to the social change in comparison with the survey effects in 1974 (ko Jung-Ja) and 1985 to find out the cause of conflict in both side of power structure and affection structure, indicating behavior, the influences on the relationships among family, possible meditators. this thesis was made by an experimental research. Data were collected from 146 mothers-in-law and 141 daughters-in-law in Pusan. The collected data were analysed by statistical methods such is as follows, 1. cause of conflict In power structure the cause of conflict is, in the case of mother-in-law opinion opposion and shaughty attitude by daughter in-low and, in the case of daughter-in-law, domestic dominance. It is thought that there is a difference of viw\ew between mother-in-law and daughter-in-law about the possesion of economic dominance and many conflicts rises because of economic dominance. but the study in 1985 than 1974 suggests the possibility of conflict meditator because mother-in-law and daughter-in-law do homework dependently in the practice of power. In affection structure, the chief dissatisfaction toward daughter-in-law showes the change in time. In 1974, there was no affection and respect. In 1985, the rate of doing without consultation was high. Also, the lack of communication of mother-in-law and daughter-in-law is the cause of conflict. 2. Indicating behavior the rate of thinking alone if high in both sides. But in the survey of 1985, the covert verbal aggressive action with which mother-in-law appeals to her daughter and daughter-in-law to husband is rising. 3. Influence on the relationship among family by the conflict between mother-in-law and daughter-in-law. the conflict between mother-in-law and daughter-in-law play negative effects on the intimacy and relation between husband and wife. 4. Conflict mediation behavior As compremiser, it is suggested that in the case of daughter-in-law the position and role of husband is important and, in the case of mother-in-law respects mother-in-law, daughter-in-law and gives her the role.

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Taylor's Power Law and Quasilikelihood

  • Park, Heung-Sun;Cho, Ki-Jong
    • 한국통계학회:학술대회논문집
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    • 한국통계학회 2003년도 추계 학술발표회 논문집
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    • pp.253-256
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    • 2003
  • In ecological studies, animal science, or entomology, the variance of count is considered to have the power of the mean relationship with the mean count as Taylor (1961) presented his famous 'Taylor's Power Law'. In this talk, we are going to review the development of TPL and its extension toward pest management sampling scheme. Different estimation methods are compared. Quasilikelihood approach is suggested to incorporate covariate information. Possible extensions will be discussed.

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Transient Performance Improvement in the Boundary Control of Boost Converters using Synthetic Optimized Trajectory

  • Feng, Gaohui;Yuan, Liqiang;Zhao, Zhengming;Ge, Junjie;Ye, Xiuxi;Lu, Ting
    • Journal of Power Electronics
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    • 제16권2호
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    • pp.584-597
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    • 2016
  • This paper focuses on an improvement in the transient performance of Boost converters when the load changes abruptly. This is achieved on the basis of the nature trajectory in Boost converters. Three key aspects of the transient performance are analyzed including the storage energy change law in the inductors and capacitors of converters during the transient process, the ideal minimum voltage deviation in the transient process, and the minimum voltage deviation control trajectory. The changing relationship curve between the voltage deviation and the recovery time is depicted through analysis and simulations when the load suddenly increases. In addition, the relationship curve between the current fluctuation and the recovery time is obtained when the load suddenly decreases. Considering the aspects of an increasing and decreasing load, this paper proposes the transient performance synthetic optimized trajectory and control laws. Through simulation and experimental results, the transient performances are compared with the other typical three control methods, and the ability of proposed synthetic trajectory and control law to achieve optimal transient performance is verified.

온주밀감에서 률응애의 공간분포분석 및 표본추출법 (Dispersion Indices and Sequential Sampling Plan for the Citrus Red Mite, Panonychus citri (McGregor) (Acari: Tetranychidae) on Satsuma Mandarin on Jeju Island)

  • 송정흡;이창훈;강상훈;김동환;강시용;류기중
    • 한국응용곤충학회지
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    • 제40권2호
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    • pp.105-109
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    • 2001
  • 귤응애의 예찰방법을 개발하기 위하여 제주지역의 온주밀감원에서 귤응애 분산형태에 대해 2개년(1999~2000년)에 걸쳐 잎 표본에 대하여 각 조사일에 평균밀도를 조사하였다. Taylor's power law와 Iwao's patchiness regression을 이용하여 분산지수를 비교하였으며, 잎 표본 조사에서는 일반적으로 Taylor's power law가 Iwao's patchiness regression보다 평균-분산 관계를 더 잘 나타내었다. Taylor's power law의 기울기와 절편은 조사한 포장 간에 차이가 없었으며, 여기에서 얻어진 상수값을 이용하여 잎 표본 조사에 의한 귤응애 약 .성충에 대한 고정정확도수준에서의 표본조사법을 개발하였다. 이 조사법에 대해 resampling 기법을 이용하여 독립된 4개의 조사자료를 이용하여 분석한 결과 실질 고정정확도(D)값이 요구되는 D값보다 항상 낮았으며, 나무당 귤응애 밀도가 8마리 이상에서 필요한 조사 나무수는 18주보다 작았다.

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결혼이민자가정 고부갈등의 맥락적 요인에 대한 탐색적 연구: 시어머니와 며느리의 인터뷰를 중심으로 (Contextual Factors in Conflicts in Multicultural Mother and Daughter In-law Relationships: A Qualitative Approach with Dyadic In-depth Interviews)

  • 강혜경;어성연
    • Human Ecology Research
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    • 제52권4호
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    • pp.355-369
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    • 2014
  • The in-law relationship traditionally plays a major role in Korean marriages and families because parents-in-law prefer to stay with their son under the same roof. The recent spike in the number of intercultural matches in South Korea may be provoking changes in the traditional family experience. The object of this qualitative study was to explore the contextual factors causing conflicts between mothers-in-law and their daughters-in-law in multicultural families. Six mother and daughter in-law dyads from rural areas of South Korea were recruited and interviewed. We found that the mothers-in-law and daughters-in-law had had different motives for the marriage at first. Five major themes emerged from the analysis of the dyadic interviews: the conflicts of the participants were embedded in the alternative family formation, in financial strains and the power structure, barriers in communication, cultural insensitivity and conflicts between value systems, as well as in role conflicts due to differing role expectations and hegemony. In conclusion, the authors of this study suggest that increasing cultural sensitivity and communication skills in immigrant daughter-in-law an Korean mother-in-law relationships will be crucial for a healthy in-law relationship. The need for the availability of Multicultural Family Centers' services in the community was highlighted. In order for mothers-in-law and daughters-in-law to form positive relationships, it is important to facilitate a variety of easily accessible educational programs in the community focusing on fostering the mother-in-law's understanding of the daughter-in-law's perspective.

고온에서의 비선형 변형도를 고려한 콘크리트 구조물에서의 열응력 분포 (Thermal stress of concrete structure at high temperature considering inelastic thermal strain change)

  • 강석원;홍성걸;신영수
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2000년도 가을 학술발표회 논문집(II)
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    • pp.1145-1150
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    • 2000
  • Concrete behaves as ductile material at high temperature. The existing stress-strain relationship is not valid at high temperature condition. Thus, stress-strain curve of concrete at high temperature is re-established by modifying Saenz's suggestion in this study. A constitutive model of concrete subjected to elevated temperature is also suggested. The model consists of three components; free thermal stain, mechanical strain and thermal creep strain. As the temperature increase, the thermal creep becomes more critical to the failure of concrete. The thermal creep strain of concrete is derived from the modified power-law relation for the steady state creep. The proposed equation for thermal creep employs a Dorn's temperature compensated time theorem

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The Relationship Between Income Inequality and Energy Consumption: A Pareto Optimal Approach

  • NAR, Mehmet
    • The Journal of Asian Finance, Economics and Business
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    • 제8권4호
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    • pp.613-624
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    • 2021
  • This paper analyzes the relationship between income distribution and energy consumption from a Pareto optimal approach. For this purpose, the causality relationship between electricity consumption per capita (kWh) with respect to country groups and energy consumption per capita (kg of oil equivalent) along with gross domestic product per capita was analyzed. In addition to this purpose, a Pareto analysis was conducted to determine the countries with the highest per capita national income, how much of the world total energy they consume, and whether the law of power in the energy and electricity markets exists. Finally, the impact of official development assistance provided to low-income countries by high-income countries on the low-income countries' electricity and energy consumption was analyzed. In other words, it was questioned whether pareto redistribution policies serve the purpose or not. The Engle-Granger causality approach was used in the analysis of the causality relationship between variables. Our analysis indicated that, first, the energy data of the country groups may be inadequate in revealing income inequalities. Second, the existence of Pareto law of power and global income inequality can be explained based on energy data. Finally, Pareto optimal redistribution policies to eliminate income inequality remain inadequate in practice.