• Title/Summary/Keyword: 바바

Search Result 28, Processing Time 0.02 seconds

Study on Structure of 9-Barbaralyl Cation by 1$^{13}C$ NMR Chemical Shift (탄소-13 핵자기공명 화학적 이동을 이용한 9-바바라릴 양이온의 구조에 관한 연구)

  • Jung-Hyu Shin;Yang-Soo Ahn
    • Journal of the Korean Chemical Society
    • /
    • v.31 no.2
    • /
    • pp.190-196
    • /
    • 1987
  • The structure of 9-barbaralyl cation was examined by Hammett-Brown plot using $^{13}C$ NMR chemical shifts. 9-Aryltricylclo$[3.3.1.0^{2,8}]$]nonan-9-yl cation (5) and 9-aryltricyclo-$[3.3.1.0^{2,8}]$nona-3,6-dien-9-yl cation (6) were prepared from the corresponding carbinols in $FSO_3H-SO_2ClF$ solution at -$120^{\circ}C$, and their chemical shifts of cation centers were measured. The slopes, ${\rho}^{C+}$ values, of the Hammett-Brown plot of (5) and (6) were -5.01 and -7.52, respectively. From these values themselves, it seemed that the double bonds participated in the delocalization of the positive charge. However, comparing ${\rho}^{C+}$ value and ${\rho}^{C_a^+}$ value in 9-barbaralyl cation (6) and those in 8,9-dehydroadamantyl cation (7), we concluded that 9-barbaralyl should be represented by the structure 4 shown in Scheme I.

  • PDF

An Efficient MANET Routing Protocol for the Drone Delivery Communication Network System (드론 택배 통신망시스템을 위한 효율적인 MANET 라우팅 프로토콜)

  • Jo, Jun-Mo
    • The Journal of the Korea institute of electronic communication sciences
    • /
    • v.10 no.9
    • /
    • pp.973-978
    • /
    • 2015
  • The drone delivery service as a new important business is emerging worldwide. American DHL parcel service is already running the delivery business using drones, and the Google, Amazon, and china's Alibaba, Baidu are also preparing for the same business. However, there are some problems in security and safety since the heavy parcels flies over the people walking down streets, so many things must be considered. The problems can be solved by communicating among drones to avoid collision. Therefore, the efficient network performance is essential, and to resolve the problem, in this paper, an efficient routing protocol is suggested by the Opnet simulator. The drone intercommunication network of MANET is designed and simulated for the efficient routing protocol.

Suggestion of developing a subscription on e-commerce platform: Case study of Amazon, Alibaba, Rakuten (쇼핑 플랫폼의 유료 멤버십 개발을 위한 제언: Amazon, Alibaba, Rakuten 멤버십 벤치마킹 사례 연구)

  • Nam, Jiyeon;Rha, Jong-Youn
    • Journal of Digital Convergence
    • /
    • v.18 no.11
    • /
    • pp.99-109
    • /
    • 2020
  • Paid membership is a useful marketing method that can acquire long-term customers. This study benchmarked representative overseas memberships, Amazon Prime, Alibaba 88 Membership, and Rakuten Super Point, so that domestic shopping platform companies can refer to launch the paid membership. The membership services have in common: economic benefits, convenient experiences, and discriminatory treatment. Domestic companies should set the core customer value they want to deliver to consumers and organize the benefits so that paid membership can be operated from a long-term perspective. This study has a high practical contribution and it is necessary to conduct an empirical analysis of experts and a customer user survey in the future.

Keyword Analysis of Data Technology Using Big Data Technique (빅데이터 기법을 활용한 Data Technology의 키워드 분석)

  • Park, Sung-Uk
    • Journal of Korea Technology Innovation Society
    • /
    • v.22 no.2
    • /
    • pp.265-281
    • /
    • 2019
  • With the advent of the Internet-based economy, the dramatic changes in consumption patterns have been witnessed during the last decades. The seminal change has led by Data Technology, the integrated platform of mobile, online, offline and artificial intelligence, which remained unchallenged. In this paper, I use data analysis tool (TexTom) in order to articulate the definitfite notion of data technology from Internet sources. The data source is collected for last three years (November 2015 ~ November 2018) from Google and Naver. And I have derived several key keywords related to 'Data Technology'. As a result, it was found that the key keyword technologies of Big Data, O2O (Offline-to-Online), AI, IoT (Internet of things), and cloud computing are related to Data Technology. The results of this study can be used as useful information that can be referred to when the Data Technology age comes.

Immigrants' Romance and Hybridity in Younghill Kang's East Goes West (『동과 서의 만남』에 나타난 이민자들의 로맨스와 혼종화)

  • Jeong, Eun-sook
    • Journal of English Language & Literature
    • /
    • v.55 no.2
    • /
    • pp.215-240
    • /
    • 2009
  • This paper focuses on how Younghill Kang internalizes whiteness ideology through interracial romance to build himself as an oriental Yankee and recover his masculinity in his autobiographical novel East Goes West. This paper also focuses on Kang's strategy of racial and cultural hybridity presented in this novel. The theoretical basis of my argument is a mixture of Fanon's psychoanalysis in his Black Skin, White Masks, Bhabha's notion of mimicry in The Location of Culture, and notions related to race and gender of some Asian critics such as Patricia Chu, Jinqi Ling, and Lisa Lowe. In East Goes West, white women appear as "ladder of success" of successful assimilation and serve as cultural mediators and instructors and sometimes adversaries who Korean male immigrants have to win to establish identities in which Americanness, ethnicity, and masculinity are integrated. However, three Korean men, Chungpa Han, To Wan Kim, George Jum, who fall in love with white women fail to win their beloveds in marriage. George Jum fails to sustain a white dancer, Jun' interest. Kim wins the affection of Helen Hancock, a New England lady, but Kim commits suicide when he knows Helen killed herself because her family doesn't approve their relationship. Han's love for Trip remains vague, but Kang implies Han will continue his quest for "the spiritual home" as the name of "Trip." In East Goes West, Kang also attempts to challenge the imagining of a pure, monolithic, and naturalized white dominant U.S. Culture by exploring the cultural and racial hybridity shown by June and the various scenes of Halem in the 1920s. June who works for a Harlem cabaret is a white woman but she wears dark makeup. Kang questions the white face of America's self-understanding and racial constitution of a unified white American culture through June's racial masquerade. Kang shows that like Asian and black Americans, the white American also has an ambivalent racial identity through June's black mimicry and there is no natural and unchanging essence behind one's gender and race identity constitution.

The Task of the Translator: Walter Benjamin and Cultural Translation (번역자의 책무-발터 벤야민과 문화번역)

  • Yoon, Joewon
    • Journal of English Language & Literature
    • /
    • v.57 no.2
    • /
    • pp.217-235
    • /
    • 2011
  • On recognizing the significance of Walter Benjamin's "The Task of a Translator" in recent discourses of postcolonial cultural translation, this essay examines the creative postcolonialist appropriations of Benjamin's theory of translation and their political implications. In an effort to dismantle the imperialist political hierarchy between the West and the non-West, modernity and its "primitive" others, which has been the operative premise of the traditional translation studies and anthropology, newly emergent discourses of cultural translation actively adopts Benjamin's notion of translation that does not prioritize the original text's claim on authenticity. Benjamin theorizes each text-translation as well as the original-as an incomplete representation of the pure language. Eschewing formalistic views propounded by deconstructionist critics like Paul de Man, who tend to regard Benjamin's notion of the untranslatable purely in terms of the failure inherent in the language system per se, such postcolonialist critics as Tejaswini Niranjana, Rey Chow, and Homi Bhabha, each in his/her unique way, recuperate the significatory potential of historicity embedded in Benjamin's text. Their further appropriation of the concept of the "untranslatable" depends on a radically political turn that, instead of focusing on the failure of translation, salvages historical as well as cultural potentiality that lies between disparate cultural entities, signifying differences, or disjunctures, that do not easily render themselves to existing systems of representation. It may therefore be concluded that postcolonial discourses on cultural translation of Niranhana, Chow, and Bhabha, inspired by Benjamin, each translate the latter's theory into highly politicized understandings of translation, and this leads to an extensive rethinking of the act of translation itself to include all forms of cultural exchange and communicative activities between cultures. The disjunctures between these discourses and Benjamin's text, in that sense, enable them to form a sort of theoretical constellation, which aspires to an impossible yet necessary utopian ideal of critical thinking.

A Study on the Factors Affecting the Acceptance of Logistics Robot in the Fulfillment Center Using the Technology Acceptance Model (기술수용모형을 통한 물류센터 내 물류로봇 구매의도에 영향을 미치는 요인에 관한 연구)

  • Hwang, Hyeon-Chul;Song, Sang-Hwa
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.20 no.12
    • /
    • pp.287-297
    • /
    • 2019
  • Responding to the rapid delivery demands and variety of small-volume products through human resource-dependent logistics operations in online markets is difficult. Logistics robots in fulfillment centers are expected to increase due to difficulties in hiring workers and rising labor costs. Amazon operates more than 100,000 robots in its Fulfillment centers. Alibaba, DHL, and UPS are also introducing robot technology to improve the logistics efficiency. Logistics robots are being used actively in the fierce online market competition of the global distribution industry. On the other hand, Korea is relatively sluggish. To revitalize the introduction of logistics robots in Korea, it is necessary to examine the factors that influence acceptance. The description of acceptability was based on an expanded technology acceptance model that has been verified through various studies. Studies have shown that both the ease and usefulness of purchasing have significant effects, and that ease has the greatest effect. The more experience involved, the more innovative, the more positive. The usefulness was shown to be positive as the perceived risks are low, price efficiency is good, and social impact is greater. This study provides theoretical and practical implications for logistics robot development and marketing.

The Characteristics and Implications of the largest e-commerce day in the world, China's Singles Day (세계 최대 규모의 전자상거래, 중국 광군제의 특징과 시사점 - 4차 산업혁명에 따른 스마트 물류의 도입을 중심으로 -)

  • Song, Min-Geun
    • Journal of Digital Convergence
    • /
    • v.18 no.4
    • /
    • pp.9-21
    • /
    • 2020
  • The Gross Merchandise Volume for the China's Singles day event in 2019 is about $38.4 billion. More than 500 million customers placed about 1.3 billion orders a day, and the related delivery volume is 2.8 billion. The main technologies associated with the 4th Industrial Revolution are bringing about a big change in the logistics industry. The purpose of this study is to present implications by reviewing the main technologies which are applied to China's Singles day event, the introduction of smart logistics in China, and analyzing the progress of Singles day, smart system of Alibaba, its significance. China still has poor infrastructure in non-capital areas. And many Chinese companies are actively introducing and developing smart logistics to cover the vast continental area of China. Singles Day is a representative case in point where the smart logistics and main technologies related to 4th Industrial Revolution are applied. The data obtained through smart logistics would be reused for inventory management, production planning, and order processing, contributing to the optimization of the company's operations. In the era of the 4th Industrial Revolution, domestic companies and governments need to make efforts to expand the introduction of smart logistics to secure competitiveness with global advanced companies.