• Progress in Superconductivity
• /
• v.13 no.2
• /
• pp.65-84
• /
• 2011

Study of superconductivity in layered iron-based materials was initiated in 2006 by Hosono's group, and boosted in 2008 by the superconducting transition temperature, $T_c$, of 26 K in $LaFeAsO_{1-X}F_X$. Since then, enormous researches have been done on the materials, with $T_c$ reaching as high as 55 K. Here, we review briefly experimental and theoretical results on atomic and electronic structures and magnetic and superconducting properties of FeAs-based superconductors and related compounds. We seek for clues for unconventional superconductivity in the materials.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
• /
• 2004.05a
• /
• pp.1018-1021
• /
• 2004

This study is an experimental study to introduce the soundscape design for urban parks. subjective response to soundscape for 4 urban park are carried out using 7 scale S.D. method which are included 25 adjective pairs. In order to recognized the effect environmental sound(bird singing, sweet environmental music, nature sound) for enriching the present sondscape, this study analyse the subject response for soundscape after and before using the environmental sound. The degree of satisfaction for visual atmosphere is higher than for auditory atmosphere of parks, this means that visual clues are much more effective to the environment condition than auditory clues. The effect of using the environmental sound is positive and effective to enrich the soundscape. On providing environmental sounds, it is necessary to consider the charcteristics of urban parks.

• Asian Pacific Journal of Cancer Prevention
• /
• v.16 no.18
• /
• pp.8673-8674
• /
• 2016

• The Journal of the Acoustical Society of Korea
• /
• v.30 no.4
• /
• pp.181-189
• /
• 2011

According to developments of digital signal processing, 3D sound come into focus on multimedia systems. Many studies on 3d sound have proposed lots of clues to create realistic sounds. But these clues are only focused on binaural systems which two ears are normal. If we make the 3d sound using those clues at monaural systems, the performance goes down dramatically. In order to use the clues for monaural systems, we have studies algorithms such as duplex theory. In duplex theory, the sounds that we listen are affected by human's body, pinna and shoulder. So, we can enhance sound localization performances using its characteristics. In this paper, we propose a new method to use psychoacoustic theory that creates realistic 3D audio at monaural systems. To improve 3d sound, we calculate the excitation energy rates of each symmetric HRTF and extract the weights in each bark range. Finally, they are applied to emphasize the characteristics related to each direction. Informal listening tests show that the proposed method improves sound localization performances much better than the conventional methods.

• Journal of the Korean earth science society
• /
• v.41 no.5
• /
• pp.531-554
• /
• 2020

In order to provide explanations of the practice of the abductive inquiry-based outdoor geological fieldwork education, this study examined the characteristics of students' performance in geological fieldwork before and after the introduction of explicit learning of geologic knowledge and inquiry. To this end, a 21st-class program was developed in the order of pre-evaluation, initial fieldwork, explicit learning of geologic knowledge and inquiry, and post-evaluation and applied to nine middle school students. As research data, outdoor geological fieldwork class recording data and students' activity sheets were collected and analyzed qualitatively. As a result, during the initial fieldwork, students caught clues of low geological importance and used everyday experience and/or general scientific knowledge as a rule when asked to generate hypotheses about the origin of the clues. Also, students evaluated their hypotheses by the scientific accuracy of the rule or their own criterion. Meanwhile, during the final fieldwork, students frequently caught key clues in geologic perspectives and generated geological event hypotheses related to the clues by borrowing geologic knowledge as a rule. Furthermore, students scientifically evaluated their hypotheses based on the consistency of evidence and rules. Combining these results, the effects of learners' geological knowledge and inquiry (abduction) abilities as a path model were presented in order to help students carry out a proficient abductive inquiry in geological fieldwork.

• Proceedings of the KSLP Conference
• /
• 1998.11a
• /
• pp.222-222
• /
• 1998

Ⅰ. Palliation vs. Correction, Ⅱ. Voice Care for the Professional, 1. laryngeal lubrication, 2. voice rest, 3. voice training, 1) reinstatement of voice, 2) vocal conditioning, Ⅲ. Don't-Guidelines for the Professional, Ⅳ. Do-Guidelines for the Professional, Ⅴ. Voice Conservation in Winter, Ⅵ. Audible Clues for Potential Voice Problems, Ⅶ. Things Which can Cause Problems, Ⅷ. Conclusion. (omitted)

• Journal of the Korean Institute of Telematics and Electronics C
• /
• v.36C no.7
• /
• pp.27-35
• /
• 1999

Researches on the recognition of handwritten script have been conducted under the assumption that the isolated recognition units are provided as inputs. However, in practical recognition system designs, providing the isolated recognition unit is an challenge due to various writing syles. This paper proposes an approach for segmenting words from lines of unconstrained handwritten text, without help of recognition. In contrast to the conventional approaches which are based on physical gaps between connected components, clues that reflect the author's writing style, in terms of spacing, are extracted and utilized for the segmentation using a simple neural network. The clues are from character segments and include normalized heights and intervals of the segments. Effectiveness of the proposed approach compared with the conventional connected component based approaches in terms of word segmentation performance was evaluated by experiments.

• Language and Information
• /
• v.17 no.2
• /
• pp.93-121
• /
• 2013

Identifying the speakers of individual utterances mentioned in textual stories is an important step towards developing applications that involve the use of unique characteristics of speakers in stories, such as robot storytelling and story-to-scene generation. Despite the usefulness, it is a challenging task because not only human entities but also animals and even inanimate objects can become speakers especially in fairytales so that the number of candidates is much more than that in other types of text. In addition, since the action of speaking is not always mentioned explicitly, it is necessary to infer the speaker from the implicitly mentioned speaking behaviors such as appearances or emotional expressions. In this paper, we investigate a method to exploit linguistic clues to identify the speakers of utterances from textual fairytale stories in Korean, especially in order to handle such challenging issues. Compared with the previous work, the present work takes into account additional linguistic features such as vocative roles and pairs of conversation participants, and proposes the use of discourse-level turn-taking behaviors between speakers to further reduce the number of possible candidate speakers. We describe a simple rule-based method to choose a speaker from candidates based on such linguistic features and turn-taking behaviors.

• Convergence Security Journal
• /
• v.14 no.6_2
• /
• pp.25-33
• /
• 2014

Arrest effect of CCTV for crime prevention is very important. CCTV for crime prevention is evaluated as the tools that act efficiently in terms of criminal arrest because CCTV is used later as evidence acting as the eyes of the distance in deserted place. Necessity of CCTV is increasing gradually because of the advantages that obtaining evidence and criminal found arrest is easy. But quality of CCTV is bad and Night Recording is poor. So it is necessary to improve quality of CCTV and Night Recording should be possible for using as crime clues and evidence. In addition, through integrated building control systems of CCTV for crime prevention and extension of retention period it is possible to easily obtain a evidence.

• The Research Journal of the Costume Culture
• /
• v.11 no.5
• /
• pp.767-777
• /
• 2003

This study defines attributes of the Korean costume culture, focussed on hair, shoes and accessories which express sex-roles, encapsulated in the term, “be like...”. A group of 362 male and female university students from Seoul and Gyeonggi area was surveyed for the study. The statistical analysis of SPSS 10.0 was applied for analyzing the data, and the significant variances were reviewed by the basic statistics and t-test. The results are as follows; First, short hair is perceived as the typical hair style that symbolizes male, both from male and female university students. Hair colors in warm color such as brown, wine, purple, lemon and orange, and the style of hair such as bobbed, long, and perm are perceived as definite clues that symbolized female. Second, when it concerns the types of shoes, both male and female university students cited oxford as the typical clue that symbolizes male, whereas pumps and sandal were cited for female. Third, in terms of types of accessories, both male and female university students perceived necklace, earring, bracelet, hair pin and band, scarf, and muffler as very feminine. Among these, hair pin and band, and scarf are evaluated as the typical clues that signify the role of females. Necktie is perceived as the typical clue that signify male role.