• Journal of Korea Society of Digital Industry and Information Management
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• v.12 no.1
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• pp.51-61
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• 2016

Because the Apple Pay which created by U.S's Apple Inc. and launch of Samsung pay in last August in domestic, people have high interest in Pin-Tech industries and new method of easy payment. In this paper, it will study newly introduced Pin-Tech industries and marketability of Pin-Tech industries. Also it will propose safe use of Pin-Tech services based on cases in domestic and overseas. This paper is organized as follows. In Chapter 2, it will study concept of Pin-Tech services and status of Pin-Tech services in domestic and overseas. In Chapter 3, it will look technical trends of Pin-Tech services. In Chapter 4, it will propose direction based on analysis of cases of Pin-Tech services. This paper will finish with conclusion in Chapter 5. Given the global trends, Korea is now just took the first steps in new Pin-Tech era. The Pin-Tech services are in situations that it is not yet activated in domestic due to the various financial regulations and procedures. In this paper, it will shows cases of concerns of Pin-Tech services and domestic authentication which relates to easy payment certification. If Pin-Tech services are develop with easy payment certification and adapt to domestic environment and develop based on stability and security as mentioned in this paper, domestic Pin-Tech services and security technology will grow to the world level. Also it requires unceasing research and efforts from relevant government officials, security companies and Pin-Tech ICT companies.

• Informatization Policy
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• v.17 no.1
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• pp.43-62
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• 2010

Mandatory use of resident registration number in Korean websites is likely to result in an violation of privacy. The Korea government introduced i-PIN (Internet Personal Identification Number) to solve this problem in Oct of 2006. But the implementation of i-PIN has failed to decrease violation of privacy. Therefore, we must open our eyes to problems of i-PIN and the importance of privacy protection. This study analyzes the policy failures of i-PIN and considers countermeasures for protecting privacy on the Internet, and explores policy alternatives to secure privacy on the Internet by analyzing the implementation process of I-PIN. In conclusion, this study stresses the urgent need for a well-thought-out policy in order to solve the problems of i-PIN on the Internet. It expects that the i-PIN will make a big stride for the realization of secure electronic government.

• Proceedings of the IEEK Conference
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• 1999.06a
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• pp.891-894
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• 1999

According to increasing the integration of the device, there are important consideration about the improvement of the reliability in the product. To improve the reliability of the device, the test parameters and test time are increased. There are no pin-to-pin short test and pin-to-pin leakage test in the present test items to analysis the characteristics and reliability of the device. The purpose of the paper is to model the pin-to-pin phenomenon and propose to modify the test method present and to test the new pin-to-pin DC parameters. These modified and additive test items are applied to product test and confirmed to improve the reliability of product test.

• Journal of Information Technology Services
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• v.12 no.2
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• pp.185-193
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• 2013

This paper analyzes the effects of i-PIN focusing on the positive value creation rather than the negative loss reduction from the viewpoint of internet company. Empirical tests are run to examine what determines the use of i-PIN and whether i-PIN users participate in e-commerce, communication, and SNS activity. Our findings are as follows. First, the reason for using i-PIN lies in the experience of privacy infringement rather than a high value on privacy protection. Second, i-PIN users tend to participate in the online activity such as e-commerce, communication, SNS. Third, the marginal effect of i-PIN adoption amounts to 2~9% of increase in the online activity. With the results, we expect that i-PIN adoption leads to sales increase and new customer acquisition as well as privacy leakage decrease and it provides logic to solve social underinvestment problem in privacy protection.

• Proceedings of the Korean Institute of Surface Engineering Conference
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• 2012.11a
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• pp.71-71
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• 2012

Memory 반도체 Test공정에서 사용되는 Probe Card의 Probing Area가 넓어지면서 종래에 사용되던 Cantilever제품의 사용이 불가능하게 되고, MEMS공정을 사용한 새로운 형태의 Advanced제품이 시장에 출현을 하였다. MEMS형의 제품은 다수의 Micro Spring을 MLC(Multi Layer Ceramic)위에 MEMS 공정을 사용하여 생성하는 방식으로서 MLC는 좁은 지역에 다수의 Pin을 생성 할 수 있는 공간을 만들어 주며, 또 다른 이유는 전기적 특성인 임피던스를 맞추고 다수의 Pin의 압력에 의하여 생기는 하중을 Ceramic기판으로 지탱하기 위한 목적도 있다. 이에 MLC와 같은 전기적 특성을 임피던스를 맞춘 RF-CPCB를 사용하여 작은 면적에 다수의 Pin접합이 가능한 방법을 마련한 후, 이 RF-PCB를 부착하여 Pin의 하중을 받는 Wafer와 유사한 열팽창을 갖는 Substrate를 사용하여 MLC를 대체하여 다양한 온도 조건에서 사용이 가능하며, 복잡하고 공정비가 많이 드는 MEMS 공정에 의한 일괄 Micro Spring 생성 공정을 전주 도금 또는 2D방식의 도금 Pin으로 대체하였으며, Probe Card의 중요한 물리적 특성인 Pin들의 정렬도를 마련하기 위해 Photo Process를 사용한 Wafer로 만든 Wafer Pin Array Frame을 사용하여 2D 제작 Pin을 일괄 또는 부분 접합이 가능한 방법으로 Probe Array Head를 제작하여 이들을 부착하여 Probe Array Head를 이전의 MEMS공정 방법에 비해 쉽고 빠르게 만들어 probe Card를 제작 할 수 있게 되었다.

• Journal of the Korean Society of Food Science and Nutrition
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• v.38 no.8
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• pp.1076-1083
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• 2009

The physicochemical properties of rice flour produced by 3 different grinding methods using various steeping times (3, 6, 9, and 12 hrs) were investigated. Roller mill gave coarse rice flour; the pin mill, intermediate flour; and mixed when both (roller & pin mills) were used. With the increase of steeping times, the rice flours became finer and the contents of crude protein, crude fat and crude ash decreased. Damaged starch was noticeably high in rice flour by roller & pin mills compared to those by roller or pin mills alone. Amylose contents, solubility and swelling power increased as the steeping times increased. Water binding capacity was the highest in roller & pin mills, followed by pin mill. In scanning electron microscope (SEM), pin mill showed distribution of separated fine particles of rice flours. The physicochemical properties of rice flours showed many differences by steeping times of rice and grinding methods. With sufficient steeping times, the rice flours obtained from pin mill were relatively fine having less damaged starch.

• The Journal of Korean Academy of Prosthodontics
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• v.36 no.5
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• pp.738-747
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• 1998

The purpose of this study was to compare the positional stability of removable dies using several dowel pin systems. The removable dies were made by using five dowel pin systems: single dowel pin(Group I), single dowel pin and prepared groove on the die base(Group II), two-single dowel pin(Group III), two separate parallel dowel pins with plastic sleeves(Group IV), double straight dowel pins with metal sleeve(Group V). Special aluminum mold was made for specimens, and the dies of specimens removed and replaced thirty times with universal testing machine. Horizontal and vertical shift of dies was measured by Olympus monocular scanning tunneling microscope(STM5). The results were as follows: 1. The vertical shift was larger than the horizontal shift in all the other groups except Group I. 2. Single dowel pin system(Group I) was the most unstable of five dowel pin systems. 3. Double dowel pin systems with steeve(group IV, V) were the most stable of five dowel pin systems. 4. This study indicates that excellent horizontal positional stability is attainable with use of additional groove on the die base or double dowel pin. and excellent vertical positional stability is attainable with use of sleeve.

• Molecules and Cells
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• v.38 no.9
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• pp.814-820
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• 2015

PinX1, a nucleolar protein of 328 amino acids, inhibits telomerase activity, which leads to the shortening of telomeres. The C-terminal region of PinX1 is responsible for its nucleolar localization and binding with TERT, a catalytic component of telomerase. A fraction of TERT localizes to the nucleolus, but the role of TERT in the nucleolus is largely unknown. Here, we report a functional connection between PinX1 and TERT regarding PinX1 stability. The C-terminal of $PinX1^{205-328}$, a nucleolar fragment, was much more stable than the N-terminal of $PinX1^{1-204}$, a nuclear fragment. Interestingly, PinX1 was less stable in TERT-depleted cells and more stable in TERT-myc expressing cells. Stability assays for PinX1 truncation forms showed that both $PinX1^{1-328}$ and $PinX1^{205-328}$, nucleolar forms, were more rapidly degraded in TERT-depleted cells, while they were more stably maintained in TERT-overexpressing cells, compared to each of the controls. However, $PinX1^{1-204}$ was degraded regardless of the TERT status. These results reveal that the stability of PinX1 is maintained in nucleolus in the presence of TERT and suggest a role of TERT in the regulation of PinX1 steady-state levels.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.13 no.5
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• pp.484-491
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• 2002

This paper presents the results of a study of voltage-controlled PIN diode attenuators for Ku-band satellite payload and suggests the temperature-compensation method of these attenuators. The PIN diode attenuators are designed using thin-film hybrid techniques. The load resistance for maximum linear characteristics is determined by simulation and measurements. In the case of APD0805, load resistance of 150 $\Omega$ gives attenuator up to 10 dB linear attenuation range per a PIN diode. Also, measurements over temperature of these PIN diode attenuators were performed. From these measurements, designed PIN diode attenuators shows the severe temperature dependency due to forward voltage variation. A temperature compensation method using thermistor is now suggested to compensate the temperature variation of these PIN diode attenuators. This circuit shows good linear characteristics over wide temperature range

• Journal of Practical Engineering Education
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• v.16 no.3_spc
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• pp.327-332
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• 2024

The spread of smart phones provides users with a variety of services, making their lives more convenient. In particular, financial transactions can be easily made online after user authentication using a smart phone. Users easily access the service by authenticating using a PIN, but this makes them vulnerable to social engineering attacks such as spying or recording. We aim to increase security against social engineering attacks by applying the authentication method including imaginary numbers when entering a password at the door lock to smart phones. Door locks perform PIN authentication within the terminal, but in smart phones, PIN authentication is handled by the server, so there is a problem in transmitting PIN information safely. Through the proposed technique, multiple PINs containing imaginary numbers are generated and transmitted as processed values such as hash values, thereby ensuring the stability of transmission and enabling safe user authentication through a technique that allows the PIN to be entered without exposure.