• The Journal of Korean Institute of Communications and Information Sciences
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• v.19 no.11
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• pp.2249-2254
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• 1994

An observation which is useful for hardware implementation of programmable FIR filters with powers-of two coefficients (2PFIR filters) is made. Specifically, it is shown that the exponents of filter coefficients representable by the canonical signed digit(CSD) code with M ternary digits can be chosen from some subsets of {0, 1, $\cdots$, M-1}. This observation naturally leads to 2PFIR filters with shorter shifters whose length is strictly less than M and, as a consequence, leads to an efficient hardware structure fo programmable 2PFIR filtering. In addition, we present some experimental results indicating that the shifters of 2PFIR filters can be shortened further in some cases.

• Journal of Digital Contents Society
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• v.11 no.1
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• pp.1-8
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• 2010

Computers can intensify the students' motivation and understanding about the solution to the problems in class, therefore, computers can be the most appropriate educational tools for the study of problem solving and have been also recognized as a representable study method in the information age, which can pass on various educational experience to the right place at the right time. Mutimedia producing tool helps us develop and maintain the educational courseware by way of using general technology of multimedia system. In this thesis, it presents the efficient development process of educational software by using mutimedia producing tool, its educational advantages and problems, and its future progress direction as well.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.10 no.16
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• pp.7-18
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• 1987

From birth to death, every man is under the control of the three biorhythm curves that initiate from inner body. Those are called physical rhythm emotional rhythm and intellectual rhythm. These biorhythms have influence each other in human behaviour like physical endurance, creativity, record of examination. The result of investigation indicates that the students' records in low level period are lower than those of in high. Therefore, it is verified statistically whether the biorhythem has effects on human ability in scholarly record or not And also, this research calculates the average mixed biorhythm which is representable for a group by using mode mixed-biorhythm.

• The Korean Journal of Archival Studies
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• no.59
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• pp.277-320
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• 2019

'Memory discourse' takes an important role in the paradigm shift of archival science. Memory points to the limitation of 'records as evidence' that had been assumed to be representable and redefines the record as an infinite interpretable medium by captured memory. Now, recordkeeping are given a new question as 'what world to remember' beyond 'how to remember the world' between 'visible' records and 'invisible' memories. And, the power of memory's personal, present, and everyday aspect is linked to the argument that the keeping of memory and records itself can take a social justice role. In this article, we examine the western archival science's memory discourse landscape comprehensively and reconstruct it to examine the possibility of memories' social justice or archival justice.

• International Journal of Computer Science & Network Security
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• v.23 no.8
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• pp.49-62
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• 2023

There has been a rapid increase in the creation and alteration of new malware samples which is a huge financial risk for many organizations. There is a huge demand for improvement in classification and detection mechanisms available today, as some of the old strategies like classification using mac learning algorithms were proved to be useful but cannot perform well in the scalable auto feature extraction scenario. To overcome this there must be a mechanism to automatically analyze malware based on the automatic feature extraction process. For this purpose, the dynamic analysis of real malware executable files has been done to extract useful features like API call sequence and opcode sequence. The use of different hashing techniques has been analyzed to further generate images and convert them into image representable form which will allow us to use more advanced classification approaches to classify huge amounts of images using deep learning approaches. The use of deep learning algorithms like convolutional neural networks enables the classification of malware by converting it into images. These images when fed into the CNN after being converted into the grayscale image will perform comparatively well in case of dynamic changes in malware code as image samples will be changed by few pixels when classified based on a greyscale image. In this work, we used VGG-16 architecture of CNN for experimentation.

• The Journal of the Korea Contents Association
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• v.13 no.12
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• pp.1-8
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• 2013

Teachers, who are the subject of on-site training, cannot create education content easily reflecting their experience for themselves, and also cannot distribute the content to leaners. Even though the content is distributed, there are limited in available devices as well as representable content features. So, an applicable authoring tool is needed at the user level. In this paper, we propose an authoring tool by which users and teachers can make education content easier based on WYSIWYG interface, and can distribute that. The proposed authoring tool supports various media education content of XML format so that viewers on various smart devices can see the content regardless of operating systems. And not only we conduct survey of users to evaluate convenience and expression of proposed authoring tool, but also we check whether the content can be equally visualized on various smart devices.

• Journal of Satellite, Information and Communications
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• v.2 no.2
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• pp.1-9
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• 2007

In this paper, we describe the performance degradation of satellite Wibro system and compensation method in the high-speed railroad channel environment. High-speed railroad channel environment is divided into LOS channel and tunnel. In the LOS channel, signal blocking caused by railroad power feeder structures can be a critical problem which is can be solved with antenna diversity. On the other hand, multi path interference phenomenon, representable by propagation model of Optic Fiber, occurred in the tunnel may be another obstacle. These satellite Wibro system performance degradations in railroad channel environment are addressed and adequate compensation methods are proposed and verified through computer simulation. In addition, the ICI caused by Doppler shift in OFDM system is analyzed with its compensation method.

• The Transactions of the Korea Information Processing Society
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• v.1 no.3
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• pp.398-408
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• 1994

It is true color that is allocated 1 byte to three basic colors, red, green, and blue in order to represent a pixel of an image. It is a merit that almost all colors are representable by using the true color. However, it requires a lot of storages. An efficient image compression method is necessary. Most of the existing compression methods have not considered the characteristics of the true color images. Therefore, the efficient compression has been almost impossible. The differences of each pixel and its adjacent pixels in the true color images are few. Only a few bits in 3 bytes data which represent a pixel have different values. But the different bits are scattered in 3 bytes, so efficient compression results are not achieved. Therefore, in the study it is shown that the similarities of data are increased by relocating the data structures of true color images. And an efficient compression strategy which uses the similarities of data is proposed.

• Journal of Communication Design
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• v.63
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• pp.336-347
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• 2018

Nowadays, in Korea, the number of campers is increased over 5 million. Many Korean camping brands have excellent qualities however, a lot of times weak brand identities to be globally known. The purpose of this study is to provide helpful sources to have strong brand identities, add more values based on related word research from big data and market research. The data is to be analysed by sensible & cognitive approaches. The keywords for the sensible research are 'camping, camp, camping brand, and camping design'. Then 17 representative oversea brands and 10 Korean brands were analysed for the market researches. From related word research from big data, we can find out the thinking process of potential consumers, how people communicates to exchange information, and what can be the sources to add brand values. Also from the market researches, we were able to find that successful brands have distinctive brand identities, stories, logos with representable colors and they continuous produce signature designs and own way of color matching.

• Journal of Internet Computing and Services
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• v.19 no.6
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• pp.53-62
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• 2018

As the performance of computer hardware has been increased in recent years, more realistic computer generated objects can be created and presented in personal computers and portable digital devices as well. For this reason, digital contents, including computer graphics, require virtual objects that are more realistic and representable in real-time on various devices, thus it requires more computational costs. In order to support the production of contents including computer graphics, games, and animations on multi-platform, Unity or unreal engines are mainly used. To represent more realistic behavior of virtual objects in a simulation, a virtual object must collide with other virtual objects and present the plausible interaction, as in the real world. However, such dynamic simulation requires a large amount of computational cost, and most portable devices cannot provide these dynamic simulations in real-time. In this paper, we proposed a GPGPU computation based dynamic cloth simulation to represent collision and response with spherical object in real-time. We believe that the proposed method can be useful for readily producing realistic digital contents.