• Journal of the Korean Society of Costume
• /
• v.51 no.6
• /
• pp.129-145
• /
• 2001

Socks and stockings played a role as the first clothing covering foots and legs in ancient times. During the Middle Age they have represented clothing for legs and have been transformed into plasticity and aesthetic outlets for human beings aesthetic desire. Recently in around 1980 various experiments have been tried on them as part of total fashion changing as fashion trends changes. In 1990s the industry of socks and stocking in Korea has grown up as niche market, increasing the export amount twice as much as before. Therefore, this paper reveals the plasticity through historical study of socks and stockings. The purpose of this research is to analyse the plasticity by image classification of socks and stockings in 1990s on the basis of historical studies, which will be the basic data for developing high value added products. The major plasticity features of socks and stockings are material, technic, formativeness, ornament, color in a word. In 1990s the images of socks and stockings are classified into romantic, sporty, ethnic, ecology, avant- garde image. In 20th century knit and nylon became common and the part of the total fashion, completing the whole fashion.

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 2006.05a
• /
• pp.567-568
• /
• 2006

Generally, progressive type GMP process is more efficient than batch type because there are advantages that problems of each stage(heating, press, cooling etc.) are easily grasped and a time of production is shortened. But if single cavity is used in progressive type GMP process, there is disadvantage that productivity is decreased. So, in order to improve productivity of progressive type GMP process, it is essential to secure multi cavity mold technic. In this study, as a fundamental study to develop multi cavity used in glass lens molding, we conducted a compression test for PBK40.

• Journal of Engineering Education Research
• /
• v.8 no.1
• /
• pp.60-70
• /
• 2005

The objective of the field professional education is to train up students with knowledge and technic and to supply them to companies. One of the good methods for the field professional education is to establish the school based enterprise(SBE) in school and university. The SBE program for the field professional education could improve the cooperation between industry and school(or university). In this paper, the foreign SBE programs and the domestic SBE programs are investigated and some improvement are suggested for the technical high schools.

• Journal of Information Technology Services
• /
• v.16 no.3
• /
• pp.113-125
• /
• 2017

Customers have been affected by others' opinions when they make a purchase. Thanks to the development of technologies, people are sharing their experiences such as reviews or ratings through online or social network services, However, although ratings are intuitive information for others, many reviews include only texts without ratings. Also, because of huge amount of reviews, customers and companies can't read all of them so they are hard to evaluate to a product without ratings. Therefore, in this study, we propose a methodology to predict ratings based on reviews for a product. In a methodology, we first estimate the topic-review matrix using the Latent Dirichlet Allocation technic which is widely used in topic modeling. Next, we predict ratings based on the topic-review matrix using the artificial neural network model which is based on the backpropagation algorithm. Through experiments with actual reviews, we find that our methodology can predict ratings based on customers' reviews. And our methodology performs better with reviews which include certain opinions. As a result, our study can be used for customers and companies that want to know exactly a product with ratings. Moreover, we hope that our study leads to the implementation of future studies that combine machine learning and topic modeling.

• Proceedings of the Korean Information Science Society Conference
• /
• 2006.10d
• /
• pp.334-337
• /
• 2006

현재 전 세계는 IPv4 주소 자원의 고갈에 대비한 IPv6의 도입을 위해 국가 차원의 전략적인 노력을 기울이고 있으며, 이에 따라 IPv4망에서 IPv6망으로의 안정적인 전이를 위한 상호 운영기술이 지속적으로 개발되고 있다. 이러한 기술을 적용하기 위한 다양한 응용 프로그램의 운영을 위해서 IPv6 기반의 DNS 기술은 그 핵심적인 요소라 할 수 있다. 그러나 현재 IPv4로 이루어져 있는 환경에서 바로 IPv6 환경으로의 변경이 어렵기 때문에 IPv6 네트워크 환경으로의 전이 과정에서 발생되는 IPv4와 IPv6의 네트워크의 공존 환경에서 트래픽을 안정적으로 전달하기 위한 기술이 필요하게 되었다. 이런 IPv4와 IPv6 상호 운용 기술을 이용하여 본 논문에서는 IPv4와 IPv6가 혼재한 망에서 안정적인 IPv6 Recursive DNS을 구성하기 위하여 상호 운용 기술 중 터널링 기술을 이용한 IPv6 Recursive DNS 구성 방안을 제시하여 혼재한 IPv4 와 IPv6 DNS를 운영하기 위한 구성모델을 제안한다.

• Journal of the Korean Society of Hazard Mitigation
• /
• v.9 no.6
• /
• pp.153-159
• /
• 2009

In order to estimate release water from reservoirs located on ungaged watersheds, an algorithm was suggested based on hydrologic reservoir routing and real time calibrating watershed parameters. A prototype - simple computer program was developed to implement the algorithm with Genetic Algorithm technic. The program was applied to a mid-size reservoir and its ungauged watershed area using observed rainfall data, spillway gates operation data and reservoir water stage time series data under a existing storm event. The result shows that the algorithm and the prototype would be useful to simulate released water from reservoirs.

• Journal of Korean Society for Geospatial Information Science
• /
• v.18 no.2
• /
• pp.131-138
• /
• 2010

To manage the architecture information of Seoul, aerial photographs have been taken and Photographic Interpretation Status Maps(PISP) have been produced through interpretation process. However PISP of SEOUL has a number of errors and difficulties to update maps, owing to its analogue formation by hand skill. In this study, some digitizing methods are tested to make Digital Photographic Interpretation Status Maps(DPISP). The digitizing methods by scanning maps, using ortho-images and true ortho-images, digital correction plotting process, and LiDAR techniques were used for comparative analysis of PISP. As a result of this study, the author suggest DPISP by the digital correction plotting method is proper for economical efficiency and its accuracy of the architecture information.

• School Mathematics
• /
• v.11 no.4
• /
• pp.707-722
• /
• 2009

Various theories of mathematics education which have been considered by many European researchers particularly, in France, recently are introduced. The Anthropological Theory of the didactic discussed by Chevallard will be briefly introduced. Then the praxeology as Anthropological model according to Chevallard's theory will be discussed. The necessity of Anthropological Theory, its background of development through transition process of didactic, and its basic elements will be discussed further. Additionally, teaching limit of sequences in high school mathematics will be suggested according to the theory.

• Archives of design research
• /
• v.11 no.1
• /
• pp.99-108
• /
• 1998

The purpose of this study was to exanune the effects of learning training program on university students' creativity. In order to accomplish this purpJse of the study effectively, the following research hypotheses were posited: (Hypothesis 1) The treJltment group trained with the learning program will perform better in technic.al class. (Hypothesis 2) The treatment group trained with the learning program will show the higher degree of progress in diagram creativity than the pre-treatment group. The result of the study were summarized as follows: First, regarding the effects of training, there appeared a significant difference between the groups of post-treatment class and pre-treatment class in the use of learning strategies. Second. there appeared a significant difference between the group of post-treatment class and pre-treatment class in diagranl creativity.

• Journal of the Institute of Convergence Signal Processing
• /
• v.15 no.4
• /
• pp.169-175
• /
• 2014

NG-SDH system is connected with networks throughout optical fibers. Network synchronization controller is a necessary for the data synchronization in each optical transmission system. In this paper, we have design and implementation the network synchronization controller using SOPC(system on a programmable chip) design technic. For this network synchronization controller we use FPGA in Altera. FPGA includes 32bit CPU, DPRAM(dual port ram), digital input/output port, transmitter and receiver framer, phase difference detector. We also confirm that designed network synchronization controller satisfies the ITU-T G.813 timing requirements.