연구발표논문초록 : 수율 계수와 목적 함수의 최적 유가배양에 대한 영향

박성렬,최차용 한국화학공학회 1979 추계총회초록집 Vol.- No.-

Penicillin 및 Lysozyme 耐性菌의 交叉耐性

朴成烈,朴炫敎,徐東益,柳秉植 경북대학교 의학연구소 1966 慶北醫大誌 Vol.7 No.1

Penicillin-resistant and lysozyme-resistant strains were induced by culturing Micrococcus lysodeikticus and other micrococci isolated from ea and air in penicillin and lysozyme-containing media. These strains were subcultured repeatedly on nutrient agar, and the cross resistance of the resistant strains were observed to the other antibacterial agents with the following results. 1. The resistance of resistant strains was decreased by the repeated subculture on nutrient agar. 2. Penicillin-resistant strains exhibited a marked cross resistance to streptomycin, erythromycin, aureomycin and trypaflavine. However, lysozyme-resistant strains did not exhibit any significant cross resistance to these drugs.

지진하중 하에서 교량 곡률과 사각 크기에 따른 받침부의 반력 검토

박성렬,김연태,김상철 한국구조물진단유지관리공학회 2017 한국구조물진단유지관리공학회 논문집 Vol.21 No.1

본 연구에서는 LRB 받침을 갖는 플레이트 거더교를 해석 대상 교량으로 하고 편구배별 곡선반경과 사각을 해석변수로 하여 교량 받침의 반력에 미치는 영향을 평가하고자 하였다. 지진파로는 El-Centro 지진 기록과 인공지진파를 각각 교축방향과 교축직각방향으로 적용 하고 3D 해석을 수행하였다. 해석결과, 곡선교 내측과 예각부에서 부반력이 발생될 가능성이 높은 위치로 나타났으며, 또한, 교축 직각방향으 로 지진이 작용하였을 때가 또한 가능성이 높은 조건으로 해석되었다. 그 이외에도 직선교보다는 곡선교이면서 곡률반경이 작고 사각이 작을 수록 부반력의 발생 가능성이 높은 것으로 나타났다. 따라서 교량의 부반력 발생여부는 지진파의 종류 및 교량의 편구배, 곡선반경, 사각 등을 종합적으로 고려하여 검토하여야 할 것으로 판단된다. This study has addressed to evaluate the effects of radius of curvature and skew angle on the negative reaction in a plate girder bridge with LRB (Lead Rubber Bearing) supports. As analytical parameters, various radius of curvatures and skew angles were selected and two seismic loads of El-Centro and artificial earthquakes were applied to the bridge in the longitudinal and transverse directions. As results of 3D analysis, the possibility of negative reaction is shown at the part of acute angle and inner side of the curved bridge, and becomes increased when seismic load is applied in the transverse direction. In addition, the occurrence of negative reaction is found to be increased as both radius of curvature and skew angle decrease, which means that curved bridge has higher possibility of negative reaction than straight one. Conclusively, all of earthquake wave, gradient, radius of curvature and skew angle should be considered together to investigate the possibility of negative reaction at the bridge support subject to seismic load.

낙뢰로 인한 재난을 방지하기 위한 제도적・기술적 방안

박성렬 한국재난정보학회 2021 한국재난정보학회 학술대회 Vol.2021 No.11

지구온난화에 의해서 전 세계의 기온은 계속해서 올라가고 있으며, 이에 따라 낙뢰의 발생 횟수와 강도가 점점 커지게 되어 낙뢰로 인한 재난(피해)도 늘어나고 있다. 이러한 낙뢰로 인한 재난을 방지하기 위하여 설치하는 것이 피뢰설비(피뢰시스템)이 다. 피뢰설비의 성능이 항상 정상적으로 유지・관리될 수 있도록 피뢰설비에 대한 안전인증・검사, 유지・관리 등의 기술적 기준 과 점검방법 등을 제도화하여야 하며, 피뢰설비를 설치할 때 뿐만 아니라 설치한 후에도 유지・관리할 수 있도록 제도적 근거를 마련해야 한다. 또한, 낙뢰는 주파수 성분을 포함하고 있으므로, 피뢰접지에 있어서 접지저항 뿐만 아니라 접지임피던스에 대 한 제도적 기준을 마련해야 할 것이다.

공유경제 서비스에 대해 소비자가 느끼는 가치가 지속이용의도에 미치는 영향: 애착과 유용성의 매개효과

박성렬,이정기 한국경영학회 2022 經營學硏究 Vol.51 No.3

Sharing economy is an alternative consumption paradigm in which consumers share, rather than own, limited resources. In order for a sharing economy service to settle in successfully, it is vital for consumers to use it on a continuous basis. However, prior research on sharing economy is mostly focused on the initial purchase intention of customers, and little is known about consumer behavior related to the continuance intention. This study investigates how perceived values, perceived usefulness, and sense of attachment contribute to the continuance intention in the sharing economy service. Findings of this study are intriguing. Customers’ perceived value of the car sharing services is found to have a positive influence on their perceived usefulness, as well as, their sense of attachment to the service. Both perceived usefulness and the sense of attachment to the service have a positive influence on their continuance intention. As postulated, sense of attachment is found to mediate the relationship between the perceived usefulness and continuance intention in the sharing economy service. Thus, the customers’ continuance intention is formed based upon both evaluative(i.e., perceived usefulness) and emotive(i.e., attachment) factors associated with the service. Such findings of this study provide several implications for both academics and practitioners.

치골후부 전위선절제술의 임상적 관찰

박성렬,이지복 大韓泌尿器科學會 1982 Korean Journal of Urology Vol.23 No.4

기업부설연구소에서의 연구실 안전환경 관리자의 지정에 관한 고찰

박성렬 한국재난정보학회 2022 한국재난정보학회 학술대회 Vol.2022 No.10

서비스 품질이 고객만족에 미치는 영향 : 고객 간 상호작용과 변화주도행위의 조절된 매개효과

박성렬,이정기 대한경영학회 2019 大韓經營學會誌 Vol.32 No.1

Simultaneous production and consumption, one of the four main characteristics of services, imposes service marketers unique challenges including the management of interactions among customers sharing the service environment. The customer-to-customer interaction is known to influence a customer’s service experience either positively or negatively. Customer citizenship behavior, a customer’s functional behavior during the service production process, is known to enhance other customer’s satisfaction with the service. On the other hand, a customer’s dysfunctional or undesirable behavior in a service environment has been reported to exert negative influences upon service provider performance, overall service production process, and other customers’ experience sharing the servicesape. Regardless of such practical importance, there is a surprising paucity in the literature that empirically addresses the nature, facilitators and effects of customer-to-customer interactions. This study is an attempt to examine both the antecedent and consequence of customer-to-customer interactions. By adopting pertinent theories and research findings from marketing, organizational behavior, and psychology, the study proposes and empirically examines a research model which incorporates six hypotheses addressing the relationships among service quality, customer-to-customer interaction, customer’s taking charge behavior, and customer satisfaction. Such an endeavor is expected to not only clarify the antecedent and effects of customer-to-customer interactions but also the moderated mediating role of customer’s taking charge behavior. Data collection was carried out at a fitness center in which the service environment is shared by a number of the facility users. A questionnaire was designed by adopting and modifying research instruments reported in previous studies. The questionnaire was composed of six parts: service quality, customer-to-customer interactions, customer satisfaction, customer loyalty, taking charge behavior, and demographic questions. A survey research using the self-reported questionnaire was administered upon 240 fitness center users. Prior to hypothesis testing, preliminary analysis was performed to examine the psychometric properties of the scales used in the study. The measures of this study were found to have adequate psychometric properties for a theory testing as they have satisfactory level of internal consistency, composite reliability, convergent validity, and discriminant validity. Data analyses support all six hypotheses. First, service quality of a fitness center is found to have a positive influence upon customer satisfaction. Second, service quality is found to positively affect the amount of customer-to-customer interaction as well. Third, the customer-to-customer interaction among fitness center users is turned out to exert a positive influence upon customer satisfaction. Fourth, the amount of customer-to-customer interaction is found to mediate the relationship between the service quality and customer satisfaction. Fifth, customer’s taking charge behavior is found to moderate the relationship between the customer-to-customer interaction and customer satisfaction. Finally, the indirect effect of service quality upon customer satisfaction mediated by customer-to-customer interaction is found to be moderated by taking charge behavior. In summary, the study’s propositions and research model are all adequately supported by the data. This study underscores the customer-to-customer interaction as a factor of importance in the service environment and demonstrates the critical role of customer’s taking charge behavior for customer satisfaction. As such, a number of managerial implications and research agenda may be generated from the study. Implications for service practitioners and researchers are provided. 서비스는 제공과 소비가 동시에 발생되는 특성이 있어 고객의 서비스 경험은 서비스 제공자는 물론 다른고객들에 의해서도 영향을 받게 된다. 즉, 서비스 고객은 다른 고객에 의해 영향을 받는 동시에 본인이 다른고객 및 서비스제공자에 영향을 미치기도 하는 다양한 역할을 수행한다. 일부 고객들은 자신들이 경험한 서비스의 품질을 제고하고자 하는 목적으로 구성원 간의 건설적인 교류나 참여를 통한 자발적인 변화주도행위를보이기도 한다. 본 연구는 서비스 제공 환경에서 고객이 지각한 서비스 품질, 고객만족, 고객 간 상호작용, 그리고 변화주도행위의 관계에 대해 검증을 실시하였다. 본 연구의 연구모형검증을 위한 자료 수집은 서비스 접점에서 고객간 상호작용이 잘 나타날 수 있는 환경인 피트니스 센터를 활용하였다. 현재 피트니스 센터를 이용하고 있는회원 240명을 대상으로 자기보고식 측정방식을 활용하여 자료를 수집하였다. 연구결과를 살펴보면 첫째, 피트니스 센터의 서비스 품질이 높을수록, 고객들의 만족은 높게 나타났다. 둘째, 피트니스 센터의 서비스 품질과 고객만족 간의 관계에 있어 고객 간 상호작용은 정(+)적으로 유의한매개변수 역할을 하는 것으로 나타났다. 셋째, 고객 간 상호작용과 고객만족의 관계에서 변화주도행위는 유의하게 조절적 영향을 미치는 것으로 나타났다. 넷째, 피트니스 센터의 서비스 품질이 고객 간 상호작용을 매개로하여 고객만족에 미치는 정(+)적 영향은 변화주도행위의 정도에 따라 다르게 나타났다. 이에 따라, 본 연구의조절된 매개모형이 통계적으로 유의한 것으로 나타났다. 본 연구의 결과는 고객과 서비스 제공자 간의 관계에서 고객 간의 상호작용이 서비스 품질과 고객만족사이에서 중요한 역할을 담당한다는 것을 보여주고 있다. 종합하자면, 본 연구는 그간 막연하게 가정되어왔던 고객 간의 상호작용 및 변화주도행위가 서비스 경험에 미치는 영향을 실증연구를 통해 검증함에 따라학술적인 의의뿐만 아니라 실무적으로도 다양한 시사점을 갖는 것으로 평가된다.

패션상품 구매의사 결정과정에서의 상품유형별 채널평가가 멀티채널 이용도에 미치는 영향

박성렬,김미숙 복식문화학회 2016 服飾文化硏究 Vol.24 No.6

The purposes of this study were to investigate the influences of channel assessments on the usage of multi-channels by product types, and the differences in the usage of multi-channels among product types in buying decision making process for fashion products. Data were collected from 510 consumers in their 20s to 50s with purchasing experiences through multi-channel distribution system and living in Seoul and Kyunggi province; 491 were analyzed after deleting incomplete questionnaires. Factor analysis, multiple regression analysis and one-way ANOVA were used for statistical analysis by using SPSS 18.0. The results were as follows: 5 factors were extracted for channel assessment: utility, accuracy, risk, price benefit and sharing information. Price benefits, utility and sharing information for online channel tended to influence positively on the usage of online channel and online+offline channels. Accuracy and low perceived risk of offline influenced positively on offline and on+offline channel usages. The usage levels of on-line and off-line channels for cosmetics were significantly lower than the usage levels for clothes and accessories on information search, evaluation of alternatives, and purchase stages. Significant differences were also found in the usage levels of multi-channels (on+off-line) on information search and evaluation of alternatives stages. The usage levels of the multi-channels for clothes were the highest followed by those of accessories and cosmetics in order.

잡음환경 하에서 Cumulant를 이용한 유성음과 무성음의 판별

박성렬,박창균 조선대학교 동력자원연구소 1995 動力資源硏究所誌 Vol.17 No.2

The pitch detection and the extraction of vocal tract filtering parameter which are the two significant components in speech analysis have no problem if the basic performances are ready. But in each term, the decision of the voiced and unvoiced speech has a great effect on the speech quality according to the error rate of it. Especially, the detection of voiced and unvoiced speech is very difficult in the noise corrupted speech and we can hardly understand the reconstruction speech. Therefore in this paper, we proposed a new method that classifies the voiced and unvoiced speech by normalized peak value, the ratio between the 3-order cumulant autocorrelation and the energy of speech signal. Moreover, in the white and colored gaussian noise corrupted speech, we compared the normalized peak value of autocorrelation with cumulant autocorrelation of speech signal. We found the error rate of decision of voiced and unvoiced speech according to the variation of SNR, and it shows us that our proposed method is more enhanced than the 2-order autocorrelation methods.