Proteomics Approach in Meat Science

Inho Hwang 한국식품과학회 2004 Food Science and Biotechnology Vol.13 No.2

Examining technostress creators and role stress as potential threats to employees' information security compliance

Hwang, Inho,Cha, Oona Elsevier 2018 Computers in Human Behavior Vol.81 No.-

<P><B>Abstract</B></P> <P>This study examined whether employees' security-related stress, i.e., technostress and role stress, in an organizational setting could affect their compliance intention regarding information security. In a survey of 346 employees, it was found that security-related technostress creators in organizations negatively affected employees' organizational commitment, both directly and indirectly through role stress, and further lowered compliance intention regarding information security. In addition, it was found that employees' regulatory focus, i.e., promotion focus, moderated the relationship between technostress creators and role stress. Employees with a high level of promotion focus were more resistant to the adverse effect of technostress creators and thus experienced less role stress. These results suggest directions for organizational strategies to manage and enhance employees' information security compliance.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Technostress/role stress is investigated as potential threats to security compliance. </LI> <LI> Technostress and role stress affect compliance through organizational commitment. </LI> <LI> Whether technostress creators lead to role stress depends on promotion focus. </LI> <LI> People with high promotion focus feel less role stress despite technostress creators. </LI> </UL> </P>

The Effect of Organizational Justice on Information Security-Related Role Stress and Negative Behaviors

Inho Hwang(황인호),SangJoon Ahn(안상준) 한국컴퓨터정보학회 2019 韓國컴퓨터情報學會論文誌 Vol.24 No.11

최근 많은 조직들은 정보보안 기술에 투자를 통해, 그들의 정보자원 관리 및 보호를 위한 노력을 하고 있다. 그러나, 조직 내부자에 의한 정보보안 위협 요인은 줄지 않고 있다. 본 연구는 내부자들의 정보보안 부정적 행동에 영향을 미치는 요인을 찾는다. 세부적으로, 연구는 정보보안 관련 업무스트레스와 부정적 행동간의 관계를 찾고, 조직공정성이 업무스트레스를 완화하는 것을 제시한다. 즉, 연구 목적은 조직공정성, 정보보안관련 업무스트레스, 부정적 행동간의 연계 매커니즘을 제시하는 것이다. 매커니즘 요인 구성은 정보보안 및 인사조직 관련 선행연구를 통해 도출되었다. 부정적행동은 회피행동과 이탈행동으로 구성하였으며, 보안관련 업무스트레스는 업무갈등과 업무스트레스로 구성된다. 그리고 조직공정성은 분배공정성, 절차공정성, 그리고 정보 공정성으로 구성된다. 연구 모델 검증은 구조방정식 모델링을 통해 실시하였다. 연구모델과 가설을 설립한 이후, 본 연구는 설문항목을 개발하고 정보보안 정책을 보유한 기업에 다니는 조직원 383명의 표본을 확보하였다. 연구 결과는 정보보안 관련 업무스트레스가 조직원들의 부정적 행동을 높이는 것을 증명하였으며, 조직공정성이 조직원에게 발생하는 업무스트레스를 완화하는 것을 제시하였다. 분석 결과는 내부자의 정보보안관련 부정적 행동을 최소화하기 위한 조직적 전략 수립 방향을 제시한다. In recent years, many organizations protect their information resources by investing in information security technology. However, information security threats from insiders have not been reduced. This study proposes a method for reducing information security threats within an organization by mitigating negative information security behaviors of employees. Specifically, the study finds a relationship between information security related role stress and negative behavior and suggests whether organizational justice mitigates role stress. That is, the purpose of the study is to suggest a mechanism between organizational justice, information security related role stress, and negative behavior. Negative behavior consist of avoidance behavior and deviant behavior, and security related role stress consist of role conflict and role ambiguity. Organizational justice consist of distributional justice, procedural justice, and informational justice. The research model is verified through structural equation modeling. After establishing a research model and hypothesis, we develop a survey questionnaire and collect data from 383 employees whose organizations have already implemented security policies. The findings appear that security related role stress increases negative behavior and that organizational justice mitigates role stress. The results of the analysis suggest the direction of organizational strategy for minimizing insider"s security-related negative behaviors.

Cooperative Spectrum Sensing With Quantization Combining Over Imperfect Feedback Channels

Hwang, Inho,Lee, Jeong Woo IEEE 2017 IEEE transactions on signal processing Vol.65 No.3

<P>A practical fusion rule with quantization combining is proposed for cooperative spectrum sensing over imperfect feedback channels that are inherent in the wireless environment. Local sensor nodes generate decision symbols regarding the existence of a primary user signal by multilevel detection and send them over feedback channels to the fusion center, in which demodulated symbols are combined to draw the cooperative decision. The proposed quantization combining scheme over imperfect feedback channels is analyzed, based on which detection probability and false alarm probability are derived. Operating parameters of the fusion rule with quantization combining are optimally determined under Neyman-Pearson criterion by using a differential evolution algorithm. The proposed fusion rule is compared with other schemes in terms of the detection performance, the amount of system information required for operation, the sensitivity to the channel estimation error, and the computational complexity required for parameter optimization. It is shown that the proposed fusion rule offers the reliable sensing capability even over imperfect feedback channels with requiring small amount of system information and complexity.</P>

Spatial expression of claudin family members in various organs of mice

HWANG, INHO,YANG, HYUN,KANG, HONG-SEOK,AHN, CHANG-HWAN,LEE, GEUN-SHIK,HONG, EUI-JU,AN, BEUM-SOO,JEUNG, EUI-BAE SPANDIDOS PUBLICATIONS 2014 MOLECULAR MEDICINE REPORTS Vol.9 No.5

Claudins (CLDNs) are tetraspan transmembrane proteins, which are components of tight junctions. The CLDN family is composed of 27 members that are responsible for paracellular transport and certain CLDNs form charge-selective ion channels. CLDNs have two extracellular loops, and the charge of the first extracellular loop determines the ion selectivity of each CLDN. Although the expression and function of each CLDN have been previously investigated, the distribution of CLDNs in various target organs remains to be determined. In the present study, the tissue-specific mRNA distribution of CLDNs (1-5, 7-8, 10a and b, 11-12, 14-17 and 19) in the duodenum, ileum, colon, kidney, liver and lung were defined. Among the tested CLDNs, CLDN1, 2, 12 and 16 were selected for further investiagtion. It was observed that CLDN1, CLDN2 and CLDN12 transcripts and proteins were particularly abundant in the investigated organs. Notably, immune-reactive CLDN16 was detected in a tissue-specific manner and shown in the renal tubules and portal vein. The tested CLDNs were localized to intercellular apical junctions in the epithelium of the intestine, renal tubule and bronchus. Based on this novel information, the presence of several types of CLDNs is of interest as CLDNs may promote or dampen the paracellular diffusion of specific ions.

Impacts of Security Policy Goals and Motivation on Compliance Intention

Inho Hwang,Taewhan Kim 동중앙아시아경상학회 2016 한몽경상학회 학술대회 Vol.2016 No.11

A Study on Signal Analysis of the Data Aquisition System for Photosensor

Hwang InHo(황인호),Yoo Sun Kook(유선국) 한국재활복지공학회 2016 재활복지공학회논문지 Vol.10 No.3

slip-ring 기술을 가진 spiral CT의 주요 장점으로는 X-ray 튜브의 연속적인 회전에 의해 환자에 대한 정보의 손실 없이 데이터를 연속적으로 획득할 수 있다는 것이다. 또한, X-선량의 인체 흡수의 감소를 위해서, 고시그널 저노이즈 및 빠른 데이터 획득 시간을 갖는 시스템이 요구되어 진다. 본 연구에서, CT 적용을 위해 다채널 포토센서 및 데이터 획득 시스템이 개발되어 졌다. 포토센서의 모듈은 16채널 CdWO4 크리스탈 및 실리콘 베이스의 포토다이오드가 사용되었다. 또한, 포토센서로 부터의 입력 신호에 대한 전기적인 증폭을 위해, 트랜스 임피던스 스위치 인테그레이터가 사용되었다. 스위치 인테그레이터는 CT 적용에 대해 적합한 시그널 밴드와 노이즈 퍼포먼스를 갖고 있다. 데이터 획득과 20 bit ADC 의 컨트롤은 FPGA를 이용하였고, 코딩은 VHDL을 사용하였다. CdWO4 기반의 실리콘 포토센서와 고SNR 및 좁은 시그널 밴드를 가진 증폭단 및 FPGA기반의 디지털 하드웨어는 CT적용 이외에 하드웨어 변경 없이 다른 분야에서도 이용 가능하다. The major advantage of slip-ring technology in Spiral CT is that it facilitates continuous rotation of the x-ray tube, so that volume data can be acquired from a patient quickly. Not only for such a fast scan, but also for the dose reduction purpose, high signal-to-noise ratio and fast data acquisition system is required. In this study, we have built a multi-channel photodetector and multi-channel data acquisition system for CT application. The detector module consisted of CdWO4 crystal and Si photodiode in 16 channels. For the performance test of the preamplifier stage, both the transimpedance and switched integrator types are optimized for the photodetector modules. Switched integrator showed better noise performance in the limited bandwidth which is suitable for the current CT application. The control sequence for data acquisition and 20 bit ADC is designed with VHDL(Very High Speed Integrated Circuit Hardware Description Language) and implemented on FPGA(Field Programmable Gate Array) chip. Our Si photodiode detector module coupled to CdWO4 crystal showed comparable signal with other commercially available photodiode for CT. Switched integrator type showed higher SNR but narrower bandwidth compared to transimpedance preamplifier. Digital hardware is designed by FPGA, so that the control signal could be redesigned without hardware alteration.

Buckling of Orthotropic Plates under Various Inplane Loads

Inho Hwang,Jong Seh Lee 대한토목학회 2006 KSCE journal of civil engineering Vol.10 No.5

When a laminated composite plate is subjected to a compressive edge force lying in the plane of the plate, failure can occur by buckling at a stress below the strength of the material. Critical buckling loads of orthotropic plates are usually calculated using the analytical solutions which are based on the assumption of uniform end loads, despite the fact that real structures are subjected to various non-uniform inplane loads. This paper examines the buckling behavior of the orthotropic plates under non-uniform inplane loads with different boundary conditions (all edges simply supported, two loaded edges clamped and others simply supported, and all edges clamped) using the finite element method (FEM). Numerical results show that the existing formulas for buckling load based on the uniform load assumption leads to overestimation of buckling loads.

Understanding the Effect of Goal Setting in IS Compliance Intention Through Stress Theory: The Moderating Effect of Stress Coping

Inho Hwang,Sungho Hu,Sanghyun Kim 한국지능정보시스템학회 2022 한국지능정보시스템학회 학술대회논문집 Vol.2022 No.6

This study proposes a research model that empirically investigates the relationships between variables (the difficulty and specificity) in goal setting of information security(IS) policies and two variables (role ambiguity and role conflict) associated with employees’ IS related role stress, which then influences the compliance intention of IS. In addition, we examined the roles of coping style (task and emotion) as a moderator in the relationship between IS policy goals and IS role stress. We conducted a survey with employees in financial firms where IS policy and technology are strictly enforced in order to verify the research hypotheses. We performed structural equation modeling based on 266 samples. The results show that goal difficulty and goal specificity of IS policy decrease two types of employees’ IS related role stress, which has a negative impact on IS compliance intention. Moreover, the results show that an employee’s task coping has a moderating effect within the proposed relationship while emotion coping does not. The findings of the study suggest the importance of the conditions of an organization’s IS policy goal setting and the importance of making the effort to decrease an employee’s IS related stress in order to strengthen organizational compliance intention of IS.

Isolation System for Vibration Control of Stay Cables

Hwang, Inho,Lee, Jong Seh,Spencer Jr., B. F. American Society of Civil Engineers 2009 Journal of engineering mechanics Vol.135 No.1