• Journal of the Institute of Electronics Engineers of Korea CI
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• v.47 no.6
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• pp.124-130
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• 2010

Current traffic guidance system offers the information of traffic light using a speaker to everybody including the blinds without object certification. Therefore, the current system gives stress by noisy sound to normal person. It is difficult for the blind to hear informations such as location, current traffic sign light status, and weather information, because of the vehicle noise and surroundings noise. If the blind or sight disabled person who has the RFID tag or has a white stick with RFID tag approaches to street crossing, RFID reader recognizes the tag and it serves necessary information through speaker or bluetooth. And also it is possible for the blind to use less expensive one with RFID tag than the white stick with RFID Reader.

• Korean Journal of Human Ecology
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• v.22 no.6
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• pp.673-686
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• 2013

The purpose of this study is to identify consumer needs and sensory evaluation of jacquard fabrics for blind using low melting polyester. Ten kinds of jacquard fabric used for this study were developed. Developed jacquard fabrics were assessed subjectively by 164 consumers using 7-point scale of 22 consumer needs and 43 sensory descriptors. The results were briefly summarized as follows: the most important parameter to choose fabric for blind was 'Easy-use' and the other parameters are 'Lightproof', 'UV-protect', 'Design', 'Price', 'Color', 'Insulation', 'Easy-care'. The image sensibility of jacquard fabrics was explained by six factors: feminine, active, modern, traditional, pure, cozy. Higher preference was found in jacquard fabrics of clear, natural, luxurious, simple, feminine, young, cozy, graceful image. The preference was predicted 38.2% with feminine, modern, pure, cozy, traditional factors. Correlation coefficient between image sensibility factor 1 and preference was 0.437. The 3 factors (feminine, modern, pure)were selected as significant image sensibility affecting preference.

• International Journal of Computer Science & Network Security
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• v.22 no.1
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• pp.61-68
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• 2022

The present study was based on developing an AI based model to facilitate the academic registration needs of blind students. The model was developed to enable blind students to submit academic service requests and tasks with ease. The findings from previous studies formed the basis of the study where functionality gaps from the literary research identified by blind students were utilized when the system was devised. Primary simulation data were composed based on several thousand cases. As such, the current study develops a model based on archival insight. Given that the model is theoretical, it was partially applied to help determine how efficient the associated AI tools are and determine how effective they are in real-world settings by incorporating them into the portal that institutions currently use. In this paper, we argue that voice-activated personal assistant (VAPA), text mining, bag of words, and case-based reasoning (CBR) perform better together, compared with other classifiers for analyzing and classifying the text in academic request submission through the VAPA.

• Journal of architectural history
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• v.26 no.6
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• pp.67-76
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• 2017

Royal banquets under the reign of King Sunjo saw developments in the playacting stage, which exhibited characteristics unique to the transitionary period between Jeongjo and Gojong this period established the framework of the Joseon Dynasty's playacting stage construction. Starting with the Jagyeongjeon-Hall banquet and continuing into the Year of the Golden Rat banquet, the next-day banquet by the Crown Prince demonstrates a renewed format, with the stage also changing accordingly. This change was substantiated by more assertive use of the Red Blind and gabjang. Previously, the Red Blind has been installed in the palace hall and around the royal courtyard, to form three sides, but as next-day banquets became more frequent under Sunjo, the Red Blind developed and came to be installed in accordance with the hierarchy within the royal family. In the Year of the Golden Rat banquet, the Red Blind was lifted and the throne of the crown prince was situated in the palace hall. In the banquet of the following year, however, the Red Blind was let down and the crown prince's throne was placed outside, in palace court yard. This seems to have been a gesture to reorient the crown prince's political standing and restore Sunjo's sovereignty the following year. Hence, the installation of the Red Blind developed in accordance with the royal hierarchy and ranks under Sunjo's reign. The gabjang provided the second layer of protection for the playacting stage. The hongjeongju gabjang surrounded the stage in multiple layers and served as a partition. The gabjang from the Year of the Golden Bull banquet, in particular, boasted a unique installation, where it dangled from both sides of the royal palace's facade. Hongjeongju gabjang, lapis lazuli gabjang, red gabjang, and yellow curtains were installed in the stated order to reflect Sunjo's 40th birthday as well as the 30-year anniversary of his coronation. The Red Blind and gabjang from Sunjo's years were positioned in creative ways to reinstate the royal authority, and demonstrated many improvements from those of Jeongjo's reign.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.11 no.11
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• pp.5182-5199
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• 2017

Recently, Internet of Things (IoT) drives a large variety of research, development, and new type of markets. All type of devices and sensors will be part of the Internet of Things and will be able to communicate not only plain data, but also audio-visual, olfactory, and haptic media data. In addition, as the devices and sensors getting smarter, it is highly probable that they can process acquired media and metadata to extract higher level of information (e.g., semantics). To support such enhanced functionalities, ISO/IEC SC29 WG11 (MPEG) starts a new standard project, ISO/IEC 23093, called Internet of Media Things (IoMT) to provide standard data formats and APIs for media things. This paper presents the standardization activities of IoMT focusing on explaining terms, standard scopes, and major media things with their use cases. One of the use cases, an IoT system for a blind pedestrian navigation assistance, is evaluated to prove its effectiveness.

• Journal of Biomedical Engineering Research
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• v.29 no.5
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• pp.384-391
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• 2008

For use in the guide system for the people who are visually impaired, an obstacle searching device using synchronous ultrasonic wave emission was proposed and developed. Generally, the conventional obstacle detection methods use the ultrasonic distance measuring device with successive scan method. However, the scan method causes a theoretical error and it couldn't estimate accurate obstacle distances. The proposed synchronous firing method use the plural number of ultrasonic sensors which emit ultrasonic wave simultaneously and estimate the distance to the closest obstacle relatively accurately. We analytically analyzed the errors of the conventional and proposed methods and compared the quantitative differences of the errors. The differences verified by obstacle search experiments. Using the proposed ultrasonic wave synchronous firing method, 3 dimensional obstacle location estimating device was designed and implemented. The results of the 3 dimensional obstacle detecting experiments showed the proposed method had good performances and it would be sufficiently use in the guide system for the people who are visually impaired.

• The KIPS Transactions:PartB
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• v.10B no.5
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• pp.535-542
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• 2003

This study is concerned with an assistive technology which reduces color blinds´s confusion when they access electronic documents including color objects in their computers. In this study, 1 restrict the assistive technology would apply to windows operating system, 256 color mode and implement to minimize color distortion which occurs in multi window environments because of color approximation process. As a basic palette, I use a 216 colors web safe palette which the Christine proposed as a standard for color blind, expand it to 256 colors to apply all computer displays using Microsoft Windows as its operating system and implement it as windows application. To test its effectiveness, I use a simulator for dichromats, as results of the test, the developed color vision deficiency correction S/W is effective to reduce the confusion. It is more effective to use the implemented S/W in both of design and client process for electronic documents.

• Journal of Digital Convergence
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• v.19 no.3
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• pp.363-369
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• 2021

This study improves the design of electric pot and cup that can safely pour and drink hot beverages among daily necessities for the blind and the elderly. It looks at the electric pot and cup that people with visual impairments usually use through their use perspective and studies and improves the safety problems that arise when using them based on the principle of universal design. Through this prior study, we study designs that can be used and shared by all disabled and socially disadvantaged people together and improve the design of household goods to expand the scope of use of general products and create new social values. In addition, through this design improvement process, everyone pursues an equal and virtuous life together, forms a well-off inclusive society, and takes advantage of the current position of the disabled and value of life once again.

• The Journal of the Korea institute of electronic communication sciences
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• v.12 no.3
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• pp.419-426
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• 2017

This paper describes an acoustic echo canceller with double-talk using BSS(: Blind Signal Separation) based on the geometric concept. The acoustic echo canceller may be deteriorated or diverged during the double-talk period. So we use the blind signal separation to detect the double talking by separating the near-end speech signal from the mixed microphone signal. In the closed reverberation environment, the blind signal separation extracts the near-end signal from unknown signals with the transformation and rotation based on the geometric concept. By this method, the acoustic echo canceller operates irrespective of double-talking. We verified performances of the proposed acoustic echo canceller by computer simulations. The results show that the acoustic echo canceller with this algorithm detects the double-talk periods thoroughly, and operates stably in the normal state without diverging of coefficients after ending the double-talking.

• Journal of Internet Computing and Services
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• v.10 no.1
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• pp.11-17
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• 2009

Blind equalization techniques have been used in multipoint communication on which the research on the internet has focused. In this paper, a criterion of minimizing Euclidian Distance between two PDFs for adaptive blind equalizers has been presented. In order for ED expressed with Parzen PDFs to be minimized, we propose to use a set of randomly generated desired symbols at the receiver so that the PDF of the generated symbols matches that of the transmitted symbols. From the simulation results, the proposed method has shown superior error performance even in severe channel environments in which CMA has shown severe performance degradation. This indicates that the proposed algorithm can be considered relatively insensitive to ESR variations compared to CMA. As a field of ITL, ED minimization using Parzen PDFs has shown possibilities of being successfully applied to blind equalization.