• Toxicological Research
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• v.4 no.2
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• pp.151-158
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• 1988

Experiments were undertaken to evaluate the effects of brazilin and hematoxylin on immune functions in normal young mice. Brazilin and hematoxylin decreased the circulating leucocyte counts. Brazilin and hematoxylin decreased the cirulating leucocyte counts. Both compounds did not produce a significant change of immunoorgan weights in comparison with those in the control group. Brazilin decreased significantly IgM plaque forming cells. Brazilin and hematoxylin decreased significantly Arthus reaction at 3 hours-post challenge with respect to aggregated bovine serum albumin.

• Progress in Superconductivity and Cryogenics
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• v.21 no.4
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• pp.39-43
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• 2019

The breaking of a circuit in DC grid could pose a challenge because of the absence of zero-crossing instant for both current and voltage when a fault occurs. An additional fault current limiting function will be very helpful for reducing the burden of the DC circuit breaker by limiting the fault current to a reasonable value. In this paper, we studied the overcurrent characteristics of several HTS conductors so that we could use the selected conductors for the basic design work of a resistive type fault current limiting module as a part of the circuit breaking system. According to the short-circuit test results, we suggested and compared two different basic design parameters of the HTS fault current limiting module, which will be connected in series to the DC circuit breaker.

• International Journal of Internet, Broadcasting and Communication
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• v.7 no.1
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• pp.23-29
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• 2015

Energy constraints of wireless sensor networks are an important challenge. Data Transmission requires energy. Distance between origin and destination has an important role in energy consumption. In addition, the location of base station has a large impact on energy consumption and a specific method not proposed for it. In addition, a obtain model for location of base station proposed. Also a model for distributed clustering is presented by cluster heads. Eventually, a combination of discussed ideas is proposed to improve the energy consumption. The proposed ideas have been implemented over the LEACH-C protocol. Evaluation results show that the proposed methods have a better performance in energy consumption and lifetime of the network in comparison with similar methods.

• Proceeding of EDISON Challenge
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• 2016.03a
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• pp.632-637
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• 2016

This study shows what difference would be made to the aerodynamic characteristic with different thickness ratio of the same airfoil, Eppler 387, at low Reynolds number, at the angle of attack of $0^{\circ}$. Konkuk Univ.'s airfoil has a bigger thickness ratio than that of the original Eppler 387 airfoil. The reason for the thicker camber is a Pt 100 ohm heater mounted inside the Konkuk Univ.'s airfoil and this was assumed to make some differences to aerodynamic characteristic. The comparison of these two airfoils' CFD data, provided by EDSION_CFD, with real experiment that had been made in subsonic wind tunnel at Konkuk Univ. is done. A finer result would come out if the complement of the homogeneity of the wind tunnel's fluid is done in the future.

• Proceeding of EDISON Challenge
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• 2016.03a
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• pp.295-298
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• 2016

Future logic device over the FinFET generation requires a complete electrostatics and transport characteristic for low-power and high-speed operation as extremely scaled devices. Silicon, Germanium and III-V based nanowire-based MOSFET devices and few-layer TMDC (Transition metal dichalcogenide monolayers) based multi-gate devices have been brought attention from device engineers due to those excellent electrostatic and novel device characteristic. In this study, we simulated ultrascaled Si/Ge/InAs gate-all-around nanowire MOSFET and MoS2 TMDC based DG MOSFET and TFET device by tight-binding NEGF method. As a result, we can find promising candidates of the future logic device of each channel material and device structures.

• Journal of Preventive Medicine and Public Health
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• v.54 no.3
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• pp.218-219
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• 2021

The identification of human remains can be performed visually through families and next-of-kin, but it is not advisable to rely only on visual recognition; instead, it is preferable to conduct a forensic comparison of antemortem and postmortem data for primary identifiers (fingerprints, DNA, and dental data). A dental autopsy is particularly valuable in the identification process of skeletonized, carbonized, saponified, and fragmented human remains. The principal challenge in the identification process is the search and collection of antemortem data. To this end, all dental information held on a missing person can represent a precious source of individualizing information that families should share with the police or investigating agencies after reporting a disappearance.

• Toxicological Research
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• v.18 no.2
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• pp.205-213
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• 2002

This study was undertaken to develop a subacute murine model for predicting occurrence of systemic anaphylaxis and to evaluate efficacy of various immunological parameters as the monitoring indices for the occurrence of anaphyalxis. The murine anaphyalxis model was developed through intraperitoneally sensitizing 100 $\mu\textrm{g}$ ovalbumin (OVA) in the presence of 1 mg alum and 300 ng cholera toxin twice a week interval followed by challenging 500 $\mu\textrm{g}$. OVA intravenously. Typical anaphylaxis symptoms were demonstrated at the both BALB/c mice, a strain prone to type-2 response, and C57BL/6 mice. a strain prone to type-1 response. Level of plasma histamine was approximately 50-fold or 30-fold higher in the mice sensitized with OVA than the mice sensitized with alum plus cholera toxin or the saline-treated mice after OVA challenge, respectively. Sensitization and challenge with OVA significantly enhanced plasma leukotriene $B_4$ level but not IgE levels in comparison with the control mice, which indicated the role of leukotriene $B_4$ for progression of anaphyalxis. Furthermore, among mice suffered from anaphylaxis, levels of OVA-specific IgGl were significantly higher in the BALB/c mice than in the C57BL/6 mice, which implied the genetic susceptibility for the induction of systemic anaphylaxis. Conclusively, simultaneous evaluation of histamine, leukotriene $B_4$, and allergen-specific IgG isotype may serve as more efficient monitoring tool for vaccine-related anaphyalxis.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.12 no.6
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• pp.83-89
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• 2012

This paper proposes the design of a security-enhanced RFID authentication protocol which meets the privacy protection for tag bearers. The protocol which uses AES(Advanced Encryption Standard) cipher algorithm is based on a three-way challenge response authentication scheme. In addition, three different types of protocol packet formats are also presented by extending the ISO/IEC 18000-3 standard for realizing the security-enhanced authentication mechanism in RFID system environment. Through the comparison of security, it was shown that the proposed scheme has better performance in user data confidentiality, Man-in-the-middle replay attack, and replay attack, and forgery resistance, compared with conventional some protocols. In order to validate the proposed protocol, a digital Codec of RFID tag is also designed based on the protocol. This Codec has been described in Verilog HDL and also synthesized using Xilinx Virtex XCV400E device.

• Journal of Internet Computing and Services
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• v.11 no.4
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• pp.23-32
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• 2010

In this paper, we first propose the security enhancing of authentication protocol for Hash based RFID tag, and then a digital Codec for RFID tag is designed based on the proposed authentication protocol. The protocol is based on a three-way challenge response authentication protocol between the tags and a back-end server. In order to realize a secure cryptographic authentication mechanism, we modify three types of the protocol packets which defined in the ISO/IEC 18000-3 standard. Thus active attacks such as the Man-in-the-middle and Replay attacks can be easily protected. In order to verify effectiveness of the proposed protocol, a digital Codec for RFID tag is designed using Verilog HDL, and also synthesized using Synopsys Design Compiler with Hynix $0.25\;{\mu}m$ standard-cell library. Through security analysis and comparison result, we will show that the proposed scheme has better performance in user data confidentiality, tag anonymity, Man-in-the-middle attack prevention, replay attack, forgery resistance and location tracking.

• Journal of Family Resource Management and Policy Review
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• v.23 no.2
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• pp.79-97
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• 2019

This study aimed for in-depth observation of the status quo of the youth generation's happiness utilizing the Better Life Index and the World Value Survey. To serve this purpose, the study selected 11 of the Organization for Economic Cooperation and Development(OECD) member countries (Australia, Estonia, Germany, Japan, Korea, Mexico, New Zealand, Poland, Sweden, Turkey, United States) that overlapped with the subject countries of the World Value Survey. The results of the observation first revealed that among the work-life balance levels of youth generations from across the 11 studied countries, the level for Korean youth was in a very poor state. Second, the happiness level of Korean youth also sat among the bottom ranks, with the aspects of politics, friendship, and career casting a heavy influence on importance to life; specifically, the youth generations of Turkey and Germany showed high levels of life purpose, while Korean youth displayed outstanding results in the challenge aspect. The third finding of this study reported that family, religion, power, benevolence, and challenge were commonly related to the happiness level of youth generations in countries with a higher work-life balance. The results of this study are expected to contribute to the much needed attention and support for improving the happiness level of the Korean youth generation, who will eventually play the leading role in our future society.