• Title/Summary/Keyword: the American West

Search Result 97, Processing Time 0.021 seconds

On Vortex Reduction Characteristics of Pump Sump Circulating Water Intake Basin of Power Plant Using Hydraulic Experiment (수리실험을 이용한 발전소의 순환수 취수부 흡입수조의 와류저감에 관한 연구)

  • Eom, Junghyun;Lee, Du Han;Kim, Hung Soo
    • KSCE Journal of Civil and Environmental Engineering Research
    • /
    • v.42 no.6
    • /
    • pp.815-824
    • /
    • 2022
  • Among the main facilities of the power plant, the circulating water used for cooling the power generation system is supplied through the Circulation Water Intake Basin (CWIB). The vortexes of various types generated in the Pump Sump (PS) of CWIB adversely affect the Circulation Water Pump (CWP) and pipelines. In particular, the free surface vortex accompanied by air intake brings about vibration, noise, cavitation etc. and these are the causes of degradation of CWP performance, damage to pipelines. Then power generation is interrupted by the causes. Therefore, it is necessary to investigate the hydraulic characteristics of CWIB through the hydraulic model experiment and apply an appropriate Anti Vortex Device (AVD) that can control the vortex to enable smooth operation of the power plant. In general, free surface vortex is controlled by Curtain Wall (CW) and the submerged vortex is by the anti vortex device of the curtain wall. The detailed specifications are described in the American National Standard for Pump Intake Design. In this study, the circulating water intake part of the Tripoli West 4×350 MW power plant in Libya was targeted, the actual operating conditions were applied, and the vortex reduction effect of the anti vortex device generated in the suction tank among the circulating water intake part was analyzed through a hydraulic model experiment. In addition, a floor splitter was basically applied to control the submerged vortex, and a new type of column curtain wall was additionally applied to control the vortex generated on the free surface to confirm the effect. As a result of analyzing the hydraulic characteristics by additionally applying the newly developed Column Curtain Wall (CCW) to the existing curtain wall, we have found that the vortex was controlled by forming a uniform flow. In addition, the vortex angle generated in the circulating water pump pipeline was 5° or less, which is the design standard of ANSI/HI 9.8, confirming the stability of the flow.

A Study on the Happening and the Culture of Hippies (Happening 과 Hippies 문화에 관한 연구)

  • 이효진
    • The Research Journal of the Costume Culture
    • /
    • v.8 no.3
    • /
    • pp.387-410
    • /
    • 2000
  • The purpose of this study was to approach to the internal meanings included in the Happening and the culture of hippies, by analysing the basic mental conditions in the process of the Happening. And this study was composed of the concept and the development of Happening, the characteristics of the hippies that related in the midst of the happening's background, and the formativeness between these factors and hippies'fashion. Since the happening a genre of fine arts expression attended the New School for social research in New York in 1954, Allan Kaprow direct-influenced by John Cage used the word 'Hapening'first, practicing '18 Happenings in 6 parts'at the Rueben gallery in 1959. Kaprow's 18 Happenings was one of the earliest opportunities for a wider public to attend the live events that several artists had performed more privately for various friends. Despite the very different sensibilities and structures of artist's works, artists were all thrown together by the press under the general heading of 'Happening', following Kaprow's 18 Happenings. Being considered as the root of the Happening 'Expression of Sound'of John Cage was the discovery of the exisiting thing- the Happening. Most artists were to be deeply influenced by Cage's theories and attitudes-that is, his sympathy for Zen Buddihism and oriental philosophy-and by reports of the Black Mountain events. These events would directly reflect contemporary painting and stemmed from the Futurists, Dadaists and Surrealists. And Happening's development background was based on the culture of hippies. Swinging London had been under the sway of psychedelic drugs and utopian visions of 'hippie'wave sweeping in from Califonia. This wave, which affected solid middle-class youth first and formost, began in Haight Ashbury in San Francisco. Without dwelling on the hippie movement here, it is worth nothing that it resulted from the convergence of several undercurrents : consciousness-expending drugs, the anti-Vietnam war developments, the impact of English pop groups on American music and the rise of protest songs, and finally the beatnik tradition of non-conformism. Hippie culture and its pursuit of love, peace and psychedelia was the antitheses of 1960s main street fashion. The media gave everyone with long hair the label of 'hippie', but it was always a very loose collage of attitudes and styles. The rejection of sexual taboos was conveyed by the hippie's refusal to wear. Although the bold exposure of body raised controversies because it went against the existing moral values, it has a significant implications. Psychedelics brought mind-expansion and the possibillity that modern technology (light show, synthesized electronic sounds), new fabrics or colors, and LSD could be utilized to provide an escape route from the dreariness of modern life. During the 1960s, traditional costumes, many of which had never been seen outside their native regions, became sought after and adopted in the West, initially by the young, who wanted to demonstrate their solidarity with cultures uncontaminated by mass industry. The most ardent proponents of such folk costumes were the hippies. Hippies dress was sometimes decribed as 'anti-fashion', produced by a patchwork of ragged cast-offs and flamboyant accessories, of outmoded Western dress and time-honored ethnic garments all combined, modified and permutated into variety of personal statements. 'Flower Power'became a reality. From the results of this study, we can see the expanding trend of the influence and the concept of the sew art genre 'Happening'in the formativeness as well as the fine arts field.

  • PDF

Tectonics of the south Shetland Islands and Geology of king George Island: A Review (남쉐틀랜드군도의 지체구조 및 킹죠지섬의 지질)

  • 이민성;박병권
    • 한국해양학회지
    • /
    • v.25 no.2
    • /
    • pp.74-83
    • /
    • 1990
  • The similarity in Mesozoic geology between the Antarctic Peninsula and South America indicates the possibility that they had situated along the same tectonics line before the separation of southwestern Gondwanaland. The igneous activity around the Antarctic Peninsula, including the South Shetland islands, can be correlated with the South American Cordillera Orogeny due to the subduction of Farallon/Phoenix plate until late Mesozoic. However igneous activity in Tertiary correlates with the tectonics movement accompanying the formations of Drake passage and Scotian sea. The south Shetland islands form a Jurassic-Quaternary miasmatic island arc on the sialic basement of schist and deformed sedimentary rocks. Forming of the South Shetland Islands arc began during the latest Jurassic or earliest Cretaceous from the southwestern part of the archipelago. The igneous activity migrated northeasterly and continued in most areas until late Tertiary. The entire arc-forming period, between late Jurassic and late tertiary times, was characterized by emplacement and eruption of magmas of intermediate between island-arc tholeiite and calc-alkaline types. However, Quaternary volcanic rocks show strong alkaline affinities which corresponds to the switch from compressional to intra: plate tensional tectonics. The rocks of late Cretaceous to Tertiary, mainly found in King George Island, consist of lava of basalt to andesite and intercalated pyroclastic rocks. Some of the volcanic rocks, which ofter called quartz-pyrite lodes'are severely altered and include much content of calcite,silica and pyrite.The stratographic succession of King George Island can be divided into two formation:Fields formation and Hennequin formation.The Fildes formation crops out at the west side of Admiralty Bay n King George Island,while the Hennequin formation at the east side of the bay.These two formtions are thought to be formed contempiranceously.The Fildes formation consists of altered olivine-basalt and basaltic andestie, whereas the Hennequin formation consists of fine-grained hypersthene-augite-andesite.Both formations interclate pyroclastic rocks.

  • PDF

The Metropolitan Chinju in Western Kyungnam with Special Reference to the Commuting Areas (경남 서부지역의 중심지 세력권 변화와 주민 통근형태 연구 -진주 도시권지역의 통근-역통근을 중심으로-)

  • Kwak, Chul-Hong;Lee, Jeon
    • Journal of the Korean association of regional geographers
    • /
    • v.3 no.1
    • /
    • pp.13-34
    • /
    • 1997
  • The impact of a central place on daily living over wide outlying territory has been one of traditional subjects in the field of urban geography. The flow of rural population toward the central city of Chinju characterizes the population movement in Western Kyungnam, where the spillover of urban population into outlying areas, an especially prominent phenomenon in American society, does not occur. The central city of Chinju is supposed to be the most favored settlement area in Western Kyungnam. More than two thousands of teachers. who live in Chinju, cross the city boundary each morning to do their jobs in Western Kyungnam. But only ninety teachers living outside Chinju commute to the workplace in the city. The teachers willingly spend hours commuting each day to enjoy better quality of life in the central city. In fact, the central city of Chinju functions as bedroom communities for many middle-class workers in Western Kyungnam. On the basis of teachers' commuting behavior, four levels of Chinju's urban spheres are identified in Western Kyungnam. As Table-6 and Figure-2 show, the first-order level of Chinju's sphere includes most Myuns of Sanchung/Hadong Guns and some Myuns of Sachun/Gosung Guns. The second-order level comprises Sanchung/Sachun Eubs and many Myuns of Sachun /Gosung Guns. The third-order level is made up of Samchunpo, Hadong/Gosung/Eryung/Namhae/Habchun/Hamyang Eups, and many Myuns of Eryung/Namhae/Habchun Guns. And all of Guchang Gun and most Myuns of Hamyang Gun belong to the fourth-order level of Chinju's sphere. The influence sphere of Metropolitan Chinju is extended farther in the direction of less competition with other metropolises. Such a situation occurs to the west and south of Chinju. Daily commuting, defined as the journeys to and from work, is an excellent indicator for delimiting urban spheres of influence.

  • PDF

A Study on 'Pin Oak at Son keechung Memorial Park' -Truth of Hitler Oaks- ('손기정 월계관 기념수'에 대한 소고 -히틀러 참나무의 진실-)

  • Yee, Sun
    • Journal of the Korean Institute of Landscape Architecture
    • /
    • v.48 no.6
    • /
    • pp.48-57
    • /
    • 2020
  • This study was aimed to determine the history of Son keechung laurel tree, which is designated and managed as Seoul Metropolitan Government Monument No. 5. Sohn keechung's victory in the marathon at the 1936 Berlin Olympics served as an opportunity to encourage great pride and national spirit for the Korean people's national spirit who had spent their painful days under Japanese colonial rule. The seedlings that Son keechung received at the time are currently growing at Son Keechung Sports Park on the hill in Manri-dong, west of Seoul Station, and are Quercus palustris. That variety of Tree is native to the United States. The 11th Berlin Olympics, held in 1936, is a golden opportunity for Hitler to show off the history and cultural excellence of the German race, so it does not make sense to award victors an American giant oak instead of the German oak tree. The Seoul Metropolitan Government and various media outlets made a fait accompli due to Hitler's simple mistake. However, this study revealed that the laurel that Son received was the Quercus robur, based on the articles of the Korean newspaper, the German daily newspaper, and the recently introduced article of Der Spiegel, a leading German weekly magazine. Based on these circumstances, I would like to suggest that the originally awarded Quercus robur be planted in Son keechung Memorial Park and that the newly discovered history be notified on the Seoul Metropolitan Government website and various records.

A Critical Analysis on Korea's Tidelands Policy : From a Sustainable Development Point of View (한국의 갯벌정책에 대한 비판적 소고: 지속가능한 발전의 관점에서)

  • Moon, Seogwoong
    • Environmental and Resource Economics Review
    • /
    • v.16 no.3
    • /
    • pp.575-605
    • /
    • 2007
  • Korea's tidelands policy IS examined and criticized in the paper. Korea's major tidelands in the west coast might disappear within a decade. The anachronistic development IS driven by the political interest group, forming coalition for reclamation and busily fulfilling its own profits under the facade of public good and regional development. But all regions of the world have been gradually scrapping the massive reclamation projects since the 1970's and active movements to reverse the reclamation and restore the nature are on the rise. In 1978, the U.S. Supreme Court decided to suspend the construction of the dam and to protect the snail darter despite that over 100 million dollars had been injected. This court ruling became famous and caused the American public to change their perception about the environment. In the Netherlands, following a prolonged discussion on pros and cons of reclamation, open type seawall was adopted to strike a balance among the available alternatives. Japan's Ministry of Environment was praised for forming the National Wetland Committee in order to designate 20 new Ramsar sites by 2008, with an objective to reach 33 designated Ramsar sites. Away from the large-scale reclamation projects, Korea has to move towards smaller-scale projects focusing on the knowledege intensive and circular economy society that are more in harmony with the environment.

  • PDF

The Pattern and Characteristics of Demographic Transition in Developing Countries (개발도상국의 인구변천 유형과 특징)

  • Chung, Sung-Ho
    • Korea journal of population studies
    • /
    • v.29 no.2
    • /
    • pp.89-113
    • /
    • 2006
  • Over the past four decades reproductive behavior has changed rapidly in much of the developing countries. The average total fertility rate has fallen by half from six or more to near three today. Between 1960 and 2000 the largest fertility decline occurred in Asia and Latin America. The mortality rate has also decreased in most developing countries. The purpose of this study is to review the pattern and characteristic of demographic transition in developing countries. At first, this study focuses on the regional fertility and mortality transition. Africa, the total fertility rate is still high, can be match to the second stage of demographic transition. Similar case is found in Southern West Asia areas. However, the fertility rate has therd stage of demographic transition. The same pattern is found in Latin America. The mortality rate has also decreased in most of developing countries. It is interesting to find that there is a clear difference among developing countries. In terms of crude death rate, Latin American countries show the lowest rate. while African countries remain still high rate. About mortality, African countries show a high level in terms of both crude death rate and infant mortality rate. African countries also show the lowest level of life expectancy in the world. One of the reasons for low level of life expectancy in Africa is the widespread of AIDS in this areas. This study suggests that we should include 'AIDS' in the study of mortality in African countries.

Representation of East Asia in US World Geography Textbooks: Focused on China and Japan (미국 세계지리 교과서에 재현된 동아시아 - 중국과 일본을 중심으로 -)

  • Sung, Sin-Je
    • Journal of the Korean Geographical Society
    • /
    • v.47 no.2
    • /
    • pp.297-309
    • /
    • 2012
  • This study examines how East Asia is represented in US World Geography textbooks and what kind of cultural and political epistemological frameworks are embedded in those representation focused on China and Japan. For this, four World Geography textbooks that widely used in public middle school throughout the State of Connecticut are selected as the major units of analysis and analyzed using content analysis. The results are as follows. First, The textbooks have the cultural epistemological framework that East Asia are portrayed not only as homegenous and static world but also as exotic world whose mode of life is quite different from that the West. Second, China are represented as having more traditional and negative images, whereas Japan are portrayed as receiving more modern and positive images in the textbooks. This difference is caused by the relationship between the U.S. and them and imply that the epistemological framework on East Asia of American can change according to the relationship between the U.S. and East Asia. Third, the textbooks seem to be dominated by colonialism epistemological framework that emphasize hierarchical order between the U.S. and East Asia and omit East Asian countries' contribution to global cultures and economies as political epistemological framework. These findings suggest the need to investigate the epistemological frameworks underlying World Geography textbooks used Korean classroom about neighbor Asia or non-Western societies.

  • PDF

Inflammatory Breast Cancer: a Single Centre Analysis

  • Gogia, Ajay;Raina, Vinod;Deo, Suryanarayan Vishnu;Shukla, Nootan Kumar;Mohanti, Bidhu Kalyan;Sharma, Daya Nand
    • Asian Pacific Journal of Cancer Prevention
    • /
    • v.15 no.7
    • /
    • pp.3207-3210
    • /
    • 2014
  • Background: Inflammatory breast cancer (IBC) is an aggressive form of locally advanced breast cancer characterized by rapidly progressive breast erythema, pain and tenderness, oedema and paeu d'orange appearance. It accounts for 1-3% of all newly diagnosed cases of breast cancer in the west. Data on IBC from India are lacking. The aim of our study was to assess the clinical-pathological parameters and outcome of IBC at, All India Institute of Medical Sciences, a large tertiary care centre. Materials and Methods: We screened 3,650 breast cancer cases registered from January 2004 to December 2012 and found 41 cases of IBC. Data included demographics as well as clinical, radiological and histopathological characteristics, and were collected from clinical case records using the International Classification of Diseases code (C-50). Patients who presented with IBC as a recurrence, or who had a neglected and advanced breast cancer that simulated an IBC were excluded from this study. Results: The median age was 45 years (range 23-66). The median duration of symptoms was 5 months. The American Joint Committee on Cancer stage (AJCC) distribution was Stage III - 26 and IV - 15 patients. Estrogen receptor (ER), progesterone receptor (PR) positivity and human epidermal growth factor receptor 2 (HER2/neu) positivity were 50%, 46% and 60%, respectively. Triple negativity was found in 15% of the cases. All the non metastatic IBC patients received anthracycline and/ or taxane based chemotherapy followed by modified radical mastectomy, radiotherapy and hormonal therapy as indicated. Pathological complete remission rate was 15%. At a median follow-up of 30 months, the 3 year relapse free survival and overall survival were 30% and 40%respectively. Conclusion: IBC constituted 1.1% of all breast cancer patients at our centre. One third of these had metastatic disease at presentation. Hormone positivity and Her2 neu positivity were found in 50% and 60% of the cases, respectively.

Jens Jensen's Naturalistic Landscape Style and Its Expression Characteristics (젠스 젠슨(Jens Peter Jensen)의 자연주의적 조경양식 및 표현특성)

  • Park, Eun-Yeong;Lee, Hyung-Sook
    • Journal of the Korean Institute of Traditional Landscape Architecture
    • /
    • v.36 no.2
    • /
    • pp.61-67
    • /
    • 2018
  • Jens Jensen was an American landscape architect and early conservationist who pioneered a unique naturalistic landscape style. The purpose of the present study is to study Jensen's life, careers, design philosophy, and his contributions to the history of landscape architecture. Inspired by nature, Jensen worked closely with native plants, local materials, curvilineal and circular forms, and native scenery. His pioneering work in the Chicago's West Parks, including the design of Columbus Park and Humboldt, Garfield and Douglas Parks, was informed by his philosophical belief in the humanizing power of parks. In summary, first, Jensen played a prominent role in the creation of a unique native landscape style respecting regional landscape. Second, as a devoted conservationist and educator he organized conservation movements preserving landscape heritage and founded a education institution. Third, as a social reformer he emphasized the value of parks and nearby nature for urban citizens and children. Jensen's visions and philosophies have influenced on recent naturalistic landscape style and conservation efforts to preserve cultural landscape and natural environment.