• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.53
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• pp.31-48
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• 2012

If see CISG's passing of risk and altered regulations first, when sales contract accompanies transport of goods and seller does not have duty to deliver goods at particular place, when deliver to the first carter to send to purchaser according to sales contract risk passes to purchaser, and when there is duty that seller must deliver goods to carter at specification place, when goods are delivered to carter at same place, risk does not pass to purchaser. Second, risk about transporting goods passes to purchaser at signing a contract. But, when there is special assessment, risk passes to purchaser when goods are delivered to carter who publish document that embody contract of carriage. Nevertheless, it is loss if seller did not notify this truth to occasion purchaser who could knew loss or damage of goods or know justly at sales contract conclusion defamation danger seller of be burdensome. Third, seller has responsibility about damage or loss as long as hide in own artificiality or forbearance after risk passes to purchaser. Regulation about risk in Incoterms 2010 was separated into 11 condition, and move time of risk differs in angle condition. It is appeared that the substance handles relatively comprehensively because compare in Incoterms 2010 although it is because it becomes if it examines regulation about deliver and passing of risk of goods setting in CISG relatively concise. Also, segments that can become posibility of analysis controversy exist.

• Journal of Communications and Networks
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• v.6 no.3
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• pp.280-286
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• 2004

The widespread use of the Internet and the maturing of digital video technology have led to an increase in various streaming media application. However, new classes of hosts such as mobile devices are gaining popularity, while the transmission became more heterogeneous. Due to the characteristics of mobile networks such as low speed, high error bit rate, etc., the applications over the wireless channel have different needs and limitations from desktop computers. An intermediary between two communicating endpoints to hide the heterogeneous network links is thought as one of the best approaches. In this paper, we adopted the concept of inter-packet gap and the sequence number between continuously received packets as the error discriminator, and designed an adaptive packet sizing mechanism to improve the network efficiency under varying channel conditions. Based on the proposed mechanism, the packetization scheme with error protection is proposed to scalable encoded video delivery. Finally, simulation results reveal that our proposed mechanism can react to the varying BER conditions with better network efficiency and gain the obvious improvement to video quality for stored MPEG-4 FGS video delivery.

• Journal of Information Processing Systems
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• v.14 no.5
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• pp.1087-1101
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• 2018

As cloud computing has become a widespread technology, malicious attackers can obtain the private information of users that has leaked from the service provider in the outsourced databases. To resolve the problem, it is necessary to encrypt the database prior to outsourcing it to the service provider. However, the most existing data encryption schemes cannot process a query without decrypting the encrypted databases. Moreover, because the amount of the data is large, it takes too much time to decrypt all the data. For this, Programmable Order-Preserving Secure Index Scheme (POPIS) was proposed to hide the original data while performing query processing without decryption. However, POPIS is weak to both order matching attacks and data count attacks. To overcome the limitations, we propose a group order-preserving data encryption scheme (GOPES) that can support efficient query processing over the encrypted data. Since GOPES can preserve the order of each data group by generating the signatures of the encrypted data, it can provide a high degree of data privacy protection. Finally, it is shown that GOPES is better than the existing POPIS, with respect to both order matching attacks and data count attacks.

• The Journal of the Korea Contents Association
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• v.8 no.5
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• pp.268-275
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• 2008

Providing appropriate and cooperative work among learners is an essential factor of a successful educational authoring system. Although from the viewpoint of beginning authors, many authoring functions are employed in existing authoring tool, there has been little research to solve authoring difficulties by companion's assist and to keep pace with learning. Therefore, in this paper, we designed and developed a educational authoring tool using mathematical language and cooperative work among learners, verified the validity. The authoring tool proposed has key features to hide authoring handicaps and keep pace with learning and cooperate with each other by using networked and language-based authoring tool.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.11 no.1
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• pp.570-595
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• 2017

Robust and perceptually-adaptive image watermarking algorithms have mainly targeted gray-scale images either at the modeling or embedding levels despite the widespread availability of color images. Only few of the existing algorithms are specifically designed for color images where color correlation and perception are constructively exploited. In this paper, a new perceptual and high-capacity color image watermarking solution is proposed based on the extension of Tsui et al. algorithm. The $CIEL^*a^*b^*$ space and the spatio-chromatic Fourier transform (SCFT) are combined along with a perceptual model to hide watermarks in color images where the embedding process reconciles between the conflicting requirements of digital watermarking. The perceptual model, based on an emerging color image model, exploits the non-uniform just-noticeable color difference (NUJNCD) thresholds of the $CIEL^*a^*b^*$ space. Also, spread-spectrum techniques and semi-random low-density parity check codes (SR-LDPC) are used to boost the watermark robustness and capacity. Unlike, existing color-based models, the data hiding capacity of our scheme relies on a game-theoretic model where upper bounds for watermark embedding are derived. Finally, the proposed watermarking solution outperforms existing color-based watermarking schemes in terms of robustness to standard image/color attacks, hiding capacity and imperceptibility.

• Journal of Fashion Business
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• v.8 no.5
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• pp.125-135
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• 2004

Hair coloring before the 1980s was mostly to hide white hair by dying in black. With the introduction of color TV, however, the size of the coloring market has been expanding. Nowadays, artificial synthetic dyes are widely used, which, though advantageous in many points, have problems such as harmful effects on the human body, carcinogenesis, environmental contamination and damage on hair. On the contrary, natural vegetables obtained from Curcuma Longa L., A. catechu, polygonum indigo, henna, etc. are little harmful to hair or the skin of the head and cause few environmental problems. In addition, as they are natural materials collected from nature, they are considered positively by consumers. Thus the present study started from the necessity of research on the convenient use of environment?friendly and side-effect-free natural dyes, coloring technology for reproducing original color, the improvement of adhesion rate, etc. From the present research were obtained yellow color from Curcuma Longa L., brown from A. catechu, blue from polygonum indigo and orange from henna. It is expected that, based on materials from previous researches, there may be more researches on the use of natural dyes as hair colors.

• Textile Coloration and Finishing
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• v.20 no.1
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• pp.1-7
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• 2008

The study has attempted to introduce a new coating than the conventional standardized method of spray, padding and roll coating. The study has focused on finding condition for separating water and organic layer in marble bath and surface effects according to kind of raw hide. It was found that dyestuff-free was to be used in water layer and the input amount of initial insoluble pigment to be added in marble bath should be adjusted following the change of surface area of the marble bath in order to get efficient marble effect while preventing coagulation of water and organic layers. Eventually, amorphous high value-added leather could be obtained treated in process other than the conventional standardized method. Even raw hides of low grades($C{\sim}E$ grades) could be processed into amorphous marble effect that could conceal or shield surface scratches by the colorant, which eventually eliminated necessity of using excessive amount of chemicals in the coating process leading to achieving high quality marble leather of natural look.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.12 no.8
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• pp.3911-3925
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• 2018

This paper proposes a novel steganography method to hide secret data during the generation of tangle patterns. Different from the traditional steganography based on modifying natural images, we propose to construct stego images according to the secret messages. We first create a model to group a selected image contour, and define some basic operations to generate various pattern cells. During data hiding, we create a cell library to establish the relationships between cells and secret data. By painting the cell inside the image contour, we create a dense tangle pattern to carry secret data. With the proposed method, a recipient can extract the secret data correctly. Experimental results show that the proposed method has a flexible embedding capacity. The constructed stego tangle image has good visual effects, and is secure against adversaries. Meanwhile, the stego tangle pattern is also robust to JPEG compression.

• Journal of Korea Society of Industrial Information Systems
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• v.21 no.3
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• pp.7-12
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• 2016

In a hostile Internet environment, steganography has focused to hide a secret message inside the cover medium for increasing the security. That is the complement of the encryption. This paper presents a text steganography techniques using the Hangul text. To enhance the security level, secret messages have been encrypted first through the genetic algorithm operator crossover. And then embedded into an cover text to form the stego text without changing its noticeable properties and structures. To maintain the capacity in the cover media to 3.69%, the experiments show that the size of the stego text was increased up to 14%.

• Journal of Families and Better Life
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• v.26 no.2
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• pp.71-81
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• 2008

This study checks if the PITR (Person in the Rain) test can diagnose the stress caused by school-work for middle school students, in that the PITR responses correlates with the degree of stress. The subjects in the study are 483 middle school thirdgraders from 8 middle schools in Daegu city. Research tools used are an Academic Stress Scale and a PITR test. For data analysis is adopted with t-test and Chi-square test. The results from the study are as follows. First, the stress of middle students scores 2.47/4 that means that the school stress is average, and there is no gender difference in scores. Second, PITR test shows that boys draw more rain than girls, straight rain with stronger wind, hide face more, no good facial expressions more often than girls. Girls on the contrary show more stable lines, bigger puddles, place protections more appropriately. Third, those with higher academic stress use more unstable strokes, less number of or insufficient direct protections than those with less academic stress, and draw indirect protection such as umbrellas before rain or clouds. The study concludes that a PITR test can be useful in diagnosing the academic stress of middle school students.