Search

Your search keyword '"Kang, Sang Jung"' showing total 21 results
Start Over Author "Kang, Sang Jung"
21 results on '"Kang, Sang Jung"'

1. Review-Level Sentiment Classification with Sentence-Level Polarity Correction

Author

Orimaye, Sylvester Olubolu, Alhashmi, Saadat M., Siew, Eu-Gene, and Kang, Sang Jung

Subjects
Computer Science - Computation and Language, Computer Science - Artificial Intelligence, Computer Science - Learning
Abstract

We propose an effective technique to solving review-level sentiment classification problem by using sentence-level polarity correction. Our polarity correction technique takes into account the consistency of the polarities (positive and negative) of sentences within each product review before performing the actual machine learning task. While sentences with inconsistent polarities are removed, sentences with consistent polarities are used to learn state-of-the-art classifiers. The technique achieved better results on different types of products reviews and outperforms baseline models without the correction technique. Experimental results show an average of 82% F-measure on four different product review domains., Comment: 15 pages. This paper is based on the same sentence-level technique proposed in Orimaye, S. O., Alhashmi, S. M., and Siew, E. G. Buy it-dont buy it: sentiment classification on Amazon reviews using sentence polarity shift. In PRICAI 2012: Trends in Artificial Intelligence, pp. 386-399. Springer Berlin Heidelberg

Published
2015

5. Tunable work function of a WOx buffer layer for enhanced photocarrier collection of pin-type amorphous silicon solar cells.

Author

Fang, Liang, Baik, Seung Jae, Kim, Jeong Won, Kang, Sang Jung, Seo, Jung Won, Jeon, Jin-Wan, Kim, Yoon Hak, and Lim, Koeng Su

Subjects
TUNGSTEN oxides, SILICON research, SOLAR cells, ULTRAVIOLET radiation, BUFFER solutions
Abstract

An in situ postdeposition ultraviolet treatment was proposed to improve the electrical properties of a tungsten oxide (WOx) buffer layer of pin-type amorphous silicon-based solar cell. Based on the x-ray and ultraviolet photoelectron spectroscopy and the activation energy measurements, it was found that the work function of WOx is tunable by ultraviolet light treatment, and the collection performance of solar cells incorporating WOx with the lower work function is further improved. Moreover, the optimal band alignment scheme for a window layer is discussed in terms of obtaining enhanced carrier collection without open circuit voltage degradation. [ABSTRACT FROM AUTHOR]

Published
2011
Full Text
View/download PDF

6. Nation, Region and the Politics of Geography in East Asia

Author

Mizuuchi, Toshio, Takeuchi, Keiichi, Nakashima, Koji, Oshiro, Naoki, Lin, George C. S., Kang, Sang-Jung, and Yamazaki, Takashi

Subjects
Regional Geography, Geopolitics, Human Geography of Japan, Cultural Geography, Political Geogrpahy, Geographical thought, Social Geography, Historical Geography, Theory of Geography
Abstract

Preface[MIZUUCHI Toshio]......2 / Geography and Buddihism in Tsunesaburo Makiguchi's Thought[TAKEUCHI Keiichi]......3 / Representing Nature and Nation : National-Land Afforestation Campaign and the Production of Forest in the 1960's~1970's Japan[NAKASHIMA Koji]......13 / Development Policies and Spatial Integration in Japan from 1868 to 1941[MIZUUCHI Toshio]......30 / Nationalism, Regionalism, and the Place of the 'Folklore'[OSHIRO Naoki]......43 / Statism, Regionalism, and the (Re)Production of Space in Post-reform China[LIN George C. S.]......51 / Masao Maruyama and Imaginative Geography of the Nation[KANG Sang-Jung](Translated by YAMAZAKI Takashi)......75

Published
1999

19. Doping-Free Intrinsic Amorphous Silicon Thin-Film Solar Cell Having a Simple Structure of Glass/SnO2/MoO3/i\-a\-Si/LiF/Al.

Author

Yang, Ji-Hwan, Kang, Sang Jung, Hong, Yunho, and Lim, Koeng Su

Subjects
SILICON solar cells, LITHIUM fluoride, MOLYBDENUM oxides, SEMICONDUCTOR doping, SOLAR cell efficiency, ELECTRIC properties, SILICON carbide, THIN film devices
Abstract

We fabricated doping-free intrinsic amorphous silicon (i-a-Si) thin-film solar cells having a structure of glass/SnO2/MoO3/i\-a\-Si/LiF/Al. The short-circuit current density of the cell markedly increased while the open-circuit voltage and fill factor were low due to a lower work-function of the MoO3 than that of a conventional amorphous silicon carbide film. To solve these drawbacks, we UV-treated on the MoO3 layer, obtaining a greatly enhanced conversion efficiency of 6.42%. [ABSTRACT FROM PUBLISHER]

Published
2014
Full Text
View/download PDF

20. Extraction of carriers photogenerated at p type amorphous SiC window layer in amorphous Si solar cells.

Author

Baik, Seung Jae, Kang, Sang Jung, and Lim, Koeng Su

Subjects
*PHOTOCHEMISTRY, *AMORPHOUS semiconductors, *SILICON carbide, *SILICON solar cells, *ELECTRIC fields, *ENERGY bands, *SURFACES (Technology), *QUANTUM chemistry
Abstract

The polarity of built-in electric field in p type amorphous SiC window layer originated from the band alignment with the front electrode, strongly affects carrier collection of amorphous Si solar cells. Additionally, it can be switched by reversing the surface band bending of transparent electrodes. Nitrogen incorporation at the surface of Al-doped ZnO modifies the surface band bending from the condition of carrier accumulation to that of carrier depletion; thereby quantum efficiency in short wavelength region is enhanced. The reversal of band bending also causes degradation of fill factors and open circuit voltages, which can be minimized to attain efficiency improvement. [ABSTRACT FROM AUTHOR]

Published
2010
Full Text
View/download PDF

21. Japan-North Korea Rapprochement: A State of Maturity.

Author

Kang Sang Jung

Subjects
*INTERNATIONAL relations, JAPANESE foreign relations
Abstract

Comments on the significance of diplomatic talks between North Korea and Japan. Conservatives' support for Prime Minister Junichiro Koizumi's diplomatic negotiations with North Korea; Validity of doubts about whether Japan and North Korea can really reconcile their positions about past diplomatic conflicts.

Published
2002

Catalog

Books, media, physical & digital resources
See catalog results