• Title/Summary/Keyword: In/Out Binary

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X-RAY ASTRONOMY EXPERIMENT ON THE INDIAN SATELLITE IRS-P3

  • AGRAWAL P. C.;PAUL B.;RAO A. R.;SHAH M. R.;MCKERJEE K.;VARIA M. N.;YADAV J. S.;DEDHIA D. K.;MALKAR J. P.;SHAH P.;DAMLE S. V.;MARAR T. M. K.;SEETHA S.
    • Journal of The Korean Astronomical Society
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    • v.29 no.spc1
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    • pp.429-432
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    • 1996
  • An x-ray astronomy experiment consisting of three collimated proportional counters and an X-ray Sky Monitor (XSM) was flown aboard the Indian Satellite IRS-P3 launched on March 21, 1996 from SHAR range in India. The Satellite is in a circular orbit of 830 km altitude with an orbital inclination of $98^{\circ}$ and has three axis stabilized pointing capability. Each pointed-mode Proportional Counter (PPC) is a multilayer, multianode unit filled with P-10 gas ($90\%$ Ar + $10\%\;CH_4$) at 800 torr and having an aluminized mylar window of 25 micron thickness. The three PPCs are identical and have a field of view of $2^{\circ}{\times}2^{\circ}$ defined by silver coated aluminium honeycomb collimators. The total effective area of the three PPCs is about 1200 $cm^2$. The PPCs are sensitive in 2-20 keV band. The XSM consists of a pin-hole of 1 $cm^2$ area placed 16 cm above the anode plane of a 32 cm$\times$32 cm position sensitive proportional counter sensitive in 3-8 keV interval. The position of the x-ray events is determined by charge division technique using nichrome wires as anodes. The principal objective of this experiment is to carry out timing studies of x-ray pulsars, x-ray binaries and other rapidly varying x-ray sources. The XSM will be used to detect transient x-ray sources and monitor intensity of bright x-ray binaries. Observations of black-hole binary Cyg X-1 and few other binary sources were carried out in early May and July-August 1996 period. Details of the x-ray detector characteristics are presented and preliminary results from the observations are discussed.

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PERIOD CHANGE OF W UMa TYPE CONTACT BINARY AB And (W UMa형 접촉쌍성 AB And의 주기변화)

  • Jin, Ho;Han, Won-Yong;Kim, Chun-Hwey;Lee, Jae-Woo;Lee, Woo-Baik
    • Journal of Astronomy and Space Sciences
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    • v.14 no.2
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    • pp.242-250
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    • 1997
  • The CCD photometric observations of W UMa-type eclipsing binary AB And were made from September 1994 to October 1996. New four primary minimum times were obtained from these observations. The analysis of times of minimum light for AB And confirms other previous studies that the orbital period of AB And have been changing as a form of sinusoidal variation. In this paper, we calculated the new orbital elements with linear and nonlinear quadratic term, and the best fit equation is derived with the assumption that the period variation of AB And changes sinusoidal pattern. From the sinusoidal term of this orbital element, we calculate period variation as 92 years with amplitude of $0.^{d}059$. However this result considering only sinusoidal term, was not satisfied with our recent observations. Thus, by assuming another parabolic period variation with the sinusoidal pattern, we derived the best fit orbital elements. From the quadratic coefficient of this orbital elements, we calculated the secular variation of 0.73 seconds, and from the sinusoidal term, the period variation turned out to be 62.9 years with amplitude of $0.^{d}024$. If we assume only the sinusoidal period variation of AB And, the period has to be decreased within 10 years. However if we consider quadratic term with the sinusoidal period variation of the light elements, the period is expected to be increased. Therefore long-term observations of this binary system are required to confirm this issue.

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Considering Death and Condolences from an Educational Perspective: How to Examine Condolences in Response to Death in Death Education (죽음과 애도에 대한 고찰과 교육 가능성 탐색: 죽음 교육에 앞서 죽음에 대한 반응으로서의 '애도'를 어떻게 볼 것인가)

  • Lee, Ki-Byung
    • Korean Medical Education Review
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    • v.22 no.3
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    • pp.163-172
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    • 2020
  • Medical treatments as universal care have been turning into delivering medical technology. Coping with death, which is prevalent in all medical circumstances, without comprehensive understanding results in missing out on significant aspects between life and death. This makes doctors surrender easily to a conventional and binary division of life and death and reduces the chance of including death as a part of the medical realm. Furthermore, in terms of medical education, we need to have the opportunity to consider such subjects that can benefit from special planning and consideration. Through reviewing articles in a variety of disciplines such as medicine, philosophy, psychology, literature, and anthropology, we can better understand death, condolences, and the relevance between them in a contextual way. In order to seek a better approach, this study also aims to survey and review the recent state of death education in diverse fields of medicine in Korea. In conclusion, if it is complicated for us to explain or understand death in general, focusing on condolences as a human response to death could be one meaningful way that deserves contemplation. It is possible to regard condolences as a touchstone and a prerequisite in death education itself.

The heterotopia in Caryl Churchill's Cloud Nine (캐럴 처칠의 "클라우드 나인" 에서의 혼재향)

  • Jeong, Kwi-Hoon
    • English Language & Literature Teaching
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    • v.13 no.1
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    • pp.211-233
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    • 2007
  • Caryl Churchill achieved spacial politics to resist dominant ideology in Cloud Nine. It is suggested that heterotopia is a counter-site to the places which are controlled by colonialism and sexuality. Churchill juxtaposes African colony of Victorian period in the first act and modern London in the second act. It implies that individuals are similarly oppressed by dominant ideology until now though several conditions for individuals are drastically improved. White heterosexual men in the play try to build their utopia to keep their privileges. If they find anything abnormal to their standard, they systematically classify people and organize them into the different ranks and levels to seclude them from their utopia. Actually, the ideal people in the ideal place are oppressed by patriarchal ideology, compulsory heterosexuality, and colonialism which are covertly associated with gender. Therefore, Churchill uses the cross-casting to challenge the artificiality of gender, sexuality, generation and race in the play. People realize that they need to find their own desires free from gender, compulsory heterosexuality, ethnic, and race and their subjectivity flowing in and out of space. It is the site that all the binary oppositions are deconstructed and creates new multiple nodes to expand the boundary of their communities to heterotopia in real places.

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Numerical Modeling on Microsegregation with Tip-undercooling in Weld Metal of Binary Alloys (과냉을 고려한 2원계합금 용접용융부의 미시편적 거동에 대한 수치해석 모델링)

  • 박종민;박준민;이창희
    • Journal of Welding and Joining
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    • v.17 no.4
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    • pp.60-68
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    • 1999
  • The previously developed two dimensional model was modified in order to predict more accurately the degree of microsegregation and eutectic fraction on in weld metal whose solidification rate is very fast. The model employed the same assumptions with previous model but considered of a tip undercooling. The previously predicted microsegregation and eutectic fraction has the discrepancies between simulated and examined results in the weld metal solidification. The experiments for the weld metal solidification of 2024 A1 and Fe-Ni alloy were carried out in order to examine the reasonability and feasibility of this modified model. The concentration profile of the solute and eutectic fraction predicted by the simulation agreed well with those found from experimental works. According to the results, it was believed that the dendrite tip undercooling considered in the modified model be reasonable for predicting the degree of microsegregation more accurately in weld metla solidification. In the GTA welds, degree of dendrite-tip undercooling increases with increasing solidification rage(welding speed). This serves to increase the concentration of dendrite core and thus result in reducing the degree of segregation. And solid state diffusion(back diffusion) during solidification is very low in the weld metal solidification so that little additional homogenization of solute occurs during solidification. With consideration of tip undercooling this modified model can predict exactly degree of microsegregation and eutectic fraction from slow solidification(casting) to fast solidification(welding).

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Factors Affecting Activity-Based Costing Adoption in Autonomous Public Universities in Vietnam

  • HOANG, Thi Bich Ngoc;PHAM, Duc Hieu;NGUYEN, Thi Minh Giang;NGUYEN, Thi Thanh Phuong
    • The Journal of Asian Finance, Economics and Business
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    • v.7 no.12
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    • pp.877-884
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    • 2020
  • The main aim of the present study is to investigate the factors that are considered affecting the adoption of Activity-Based Costing (ABC) in the autonomous public universities in Vietnam. A quantitative research was carried out. The data was collected through an online questionnaire survey between June 2020 and September 2020 addressed to the target respondents comprising 168 managers and accountants from 23 autonomous public universities in Vietnam, which participated in the resolution project No. 77/NQ-CP of the Vietnamese government on the pilot renovation of operational mechanisms of public tertiary education institutions during the period of four years, from 2014 to 2017. The findings resulted from hypothesis testing by a binary regression analysis based on the SPSS 20.0 software show that training, competition, support of top manager, and university size are the four main factors that positively affect the adoption of Activity-Based Costing (ABC) in studied universities. On the other hand, no statistically significant impact was found on two other variables, namely the variety of services provided and the usefulness of cost information factors. From the research results, discussions and policy recommendations have been presented to promote the adoption of Activity-Based Costing (ABC) in Vietnamese autonomous public universities in the coming time.

Barriers to Access Formal Financial Services: An Empirical Study from Indonesia

  • JAYANTI, Ari Dwi;AGUSTI, Kemala Sari;SETIYAWATI, Yuli
    • The Journal of Asian Finance, Economics and Business
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    • v.8 no.11
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    • pp.97-106
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    • 2021
  • The condition of financial services in Indonesia is unique, based on various characteristics, behaviors, and preferences. Therefore, the study of finance and banking is interesting to study as a recommendation for government policies. This paper aims to analyze the barriers to accessing formal financial services in Indonesia and why informal financial services are preferred. This paper presents a case study of financial inclusion in selected provinces in Indonesia using the SOFIA dataset from the Ministry of National Development Planning. Overall, this data consists of 20,000 individuals from 4 provinces and 93 regions representing the population in eastern Indonesia. The analysis was carried out by processing individual-level cross-sectional data surveyed in 2017 using the probit binary logistic method. The results identify the individual barriers in accessing formal financial services, including account ownership, saving, and credit activities in the formal financial institutions, and amplify the image by analyzing what determinants affect people to choose informal institutions. We found that some individual characteristics such as age, gender, education, income, employment status, residence, and access to technology significantly affect the barrier to formal financial services in East Indonesia.

Using History of East Asian Mathematics in Mathematics Classroom (수학 교실에서 동아시아 수학사 활용하기)

  • JUNG, Hae Nam
    • Journal for History of Mathematics
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    • v.35 no.5
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    • pp.131-146
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    • 2022
  • This study is to find out how to use the materials of East Asian history in mathematics classroom. Although the use of the history of mathematics in classroom is gradually considered advantageous, the usage is mainly limited to Western mathematics history. As a result, students tend to misunderstand mathematics as a preexisting thing in Western Europe. To fix this trend, it is necessary to deal with more East Asian history of mathematics in mathematics classrooms. These activities will be more effective if they are organized in the context of students' real life or include experiential activities and discussions. Here, the study suggests a way to utilize the mathematical ideas of Bāguà and Liùshísìguà, which are easily encountered in everyday life, and some concepts presented in 『Nine Chapter』 of China and 『GuSuRyak』 of Joseon. Through this activity, it is also important for students to understand mathematics in a more everyday context, and to recognize that the modern mathematics culture has been formed by interacting and influencing each other, not by the east and the west.

An Efficient DNA Sequence Compression using Small Sequence Pattern Matching

  • Murugan., A;Punitha., K
    • International Journal of Computer Science & Network Security
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    • v.21 no.8
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    • pp.281-287
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    • 2021
  • Bioinformatics is formed with a blend of biology and informatics technologies and it employs the statistical methods and approaches for attending the concerning issues in the domains of nutrition, medical research and towards reviewing the living environment. The ceaseless growth of DNA sequencing technologies has resulted in the production of voluminous genomic data especially the DNA sequences thus calling out for increased storage and bandwidth. As of now, the bioinformatics confronts the major hurdle of management, interpretation and accurately preserving of this hefty information. Compression tends to be a beacon of hope towards resolving the aforementioned issues. Keeping the storage efficiently, a methodology has been recommended which for attending the same. In addition, there is introduction of a competent algorithm that aids in exact matching of small pattern. The DNA representation sequence is then implemented subsequently for determining 2 bases to 6 bases matching with the remaining input sequence. This process involves transforming of DNA sequence into an ASCII symbols in the first level and compress by using LZ77 compression method in the second level and after that form the grid variables with size 3 to hold the 100 characters. In the third level of compression, the compressed output is in the grid variables. Hence, the proposed algorithm S_Pattern DNA gives an average better compression ratio of 93% when compared to the existing compression algorithms for the datasets from the UCI repository.

American Regionalism and Its Discontents in Constance Fenimore Woolson's "In Sloane Street"

  • Jang, Ki Yoon
    • English & American cultural studies
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    • v.18 no.1
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    • pp.93-120
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    • 2018
  • Constance Fenimore Woolson is among those whom scholars have for long been trying to rediscover and add to the list of representative American writers. The primary methodology has been regionalism, based on the fact that most of her work portrays remote, exotic regions in and out of America. Still, Woolson remains obscure to general readers as well as literary critics outside a small circle of her scholarship. This essay attributes that obscurity to Woolson scholars' blind reliance on regionalism's nationalistic assumption in reading Woolson's multifaceted writing, and proposes to explore her nationally and regionally displacing view of the rigidly stereotypical and ideologically biased binary opposition between the center and the margin in postbellum America. The essay takes as an example the only story by Woolson that has never been reprinted or anthologized until very recently, "In Sloane Street," and examines why it resists the scholarly endeavor to regional categorization. The examination especially focuses on how the story exposes the Americanizing conceptualization of the region and its limits. The essay concludes with an attention to the story's ending where Woolson abruptly yet deliberately introduces a form of almanac as the main character Gertrude's mode of daily record. The attention to that uniquely hybrid genre in the American literary tradition, which encompasses the public and the private, the universal and the local, sheds light on Woolson's authorial intention to deconstruct the Manichean view of literary regionalism.