This study aimed to identify consumer demands and propose improvement measures for restaurants by conducting an importance-satisfaction analysis of the attributes that influence dining consumers’ restaurant selection. The key findings are as follows: An analysis of consumer hygiene behavior revealed that participants were particularly vigilant about washing food ingredients, checking expiration dates, and maintaining personal hygiene before meals. Notably, women exhibited significantly higher hygiene behaviors than men in 9 out of 12 items. The importance analysis of restaurant selection attributes indicated that “food cleanliness” and “food taste” were prioritized, with women assigning higher importance to almost all attributes, particularly emphasizing restaurant cleanliness and food taste. The satisfaction analysis showed that “food taste” and “food cleanliness” were the most satisfying attributes, with significant gender differences observed in 4 out of 26 items. The importance-satisfaction analysis demonstrated that satisfaction levels were consistently lower than importance levels across all 26 attributes. The ISA analysis identified that items in the second quadrant, such as restroom cleanliness, reasonable price, and the provision of food safety information, were in the most urgent need of improvement. Overall, the study highlights that consumers place a high level of importance on hygiene and cleanliness in restaurants, reflecting a market with increasingly stringent hygiene standards.

This study aimed to understand the needs of consumers in the meal kit market and determine the impact of meal kit selection attributes according to the consumption behavior of single-person households on purchase decisions and satisfaction. A summary of the results of this study is as follows: First, the most frequent purchase frequency of meal kits was 2 to 3 times a month. The reason for purchase was that it was easy to consume, and the most common purpose of purchase was for consumption. Second, four factors, including health, convenience, taste, and economics, were derived as a result of a factor analysis of meal kit selection attributes. The difference in meal kit selection attributes according to age groups revealed that those in their 20s had high scores with respect to health and taste factors, and economic factors appeared statistically significant. Third, an analysis of the meal kit product selection attributes showed that health and taste factors had a positive influence on satisfaction. This can be said to reflect the tendency of single-person households to give weightage to healthy eating and to purchase products that can be consumed conveniently.

PURPOSES : In this study, the existence of an optimal pattern among transition methods applied during changes in traffic signal timing was investigated. We aimed to develop this pattern into an artificial intelligence reinforcement-learning model to assess its effectiveness METHODS : By developing various traffic signal transition scenarios and considering 19 different traffic signal transition situations that can be applied to these scenarios, a simulation analysis was performed to identify patterns through statistical analysis. Subsequently, a reinforcement-learning model was developed to select an optimal transition time model suitable for various traffic conditions. This model was then tested by simulating a virtual experimental center environment and conducting performance comparison evaluations on a daily basis. RESULTS : The results indicated that when the change in the traffic signal cycle length was less than 50% in the negative direction, the subtraction method was efficient. In cases where the transition was less than 15% in the positive direction, the proposed center method for traffic signal transition was found to be advantageous. By applying the proposed optimal transition model selection, we observed that the transition time decreased by approximately 70%. CONCLUSIONS : The findings of this study provide guidance for the next level of traffic signal transitions. The importance of traffic signal transition will increase in future AI-based traffic signal control methods, requiring ongoing research in this field.

Seismic fragility curves present the conditional probability of damage to target structures due to external seismic load and are widely used in various ways. When constructing such a seismic fragility curve, it is essential to consider various types and numbers of ground motions. In general, the earthquake occurrence characteristics of an area where the target structure of the seismic fragility curve exists are analyzed, and based on this, appropriate ground motions are selected to derive the seismic fragility curve. If the number of selected ground motions is large, the diversity of ground motions is considered, but a large amount of computational time is required. Conversely, if the number of ground motions is too small, the diversity of ground motions cannot be considered, which may distort the seismic fragility curve. Therefore, this study analyzed the relationship between the number of ground motions considered when deriving the seismic fragility curve and the parameters of the seismic fragility curve. Using two example structures, numerical analysis was performed by selecting a random number of ground motions from a total of two hundred, and a seismic fragility curve was derived based on the results. Analysis of the relationship of the parameter of the seismic fragility curve and the number of selected ground motions was performed. As the number of ground motions considered increases, uncertainty in ground motion selection decreases, and when deriving seismic fragility curves considering the same number of ground motions, uncertainty increases relatively as the degree of freedom of the target structure increases. However, considering a relatively large number of ground motions, uncertainty appeared insignificant regardless of increased degrees of freedom. Finally, it is possible that the increase in the number of ground motions could lower the epistemic uncertainty and thus improve the reliability of the results.

This study was conducted to solve the problem of the existing odor management method taking a long time to analyze samples. Using real-time air quality measurement equipment, 17 designated odor substances were measured three times at a business site causing odor complaints. As a result, three substances, hydrogen sulfide, trimethylamine, and methyl mercaptan, were measured at higher levels than the site boundary emission standards inside the business site. In the case of trimethylamine, it was measured about 500 times higher than Odor Threshold Values, and was estimated to be the substance causing the odor. Through an inspection of the business site, improvements were instructed to be made to the wastewater treatment process, which is the emission facility where trimethylamine is generated. Subsequent measurement results showed that designated odor substances were measured within the emission standards at all locations, and it was determined that efficient management of odorgenerating businesses would be possible if Selected Ion Flow tube-Mass Spectrometry was utilized.

많은 사람들이 건강과 동물보호를 위한 채식에 관심이 있지만, 채식을 실천하는 것은 쉽지 않다. 본 연구에서는 한 개인의 마음-신체의 관계에 대한 생각이 건강을 위한 행동과 채식제품의 선택에 끼치는 영향을 살펴보려 한다. 연구 1에서는 마음-신체의 관계에 대한 생각을 마음-신체가 분리되는 이원론과 마음-신체가 연결되는 물리주의로 구분하여, 이 두 가지 유형의 생각이 건강을 위한 행동과 채식제품의 선택에 끼치는 영향을 비교하였다. 연구 2에서 는 마음-신체에 대한 생각이 한 개인이 지향하는 사회적 가치에 영향을 끼치는지를 검증하였다. 연구 3에서는 건강 한 채식과 이원론의 관계가 양방향으로도 가능한지를 건강한 음식사진과 건강하지 않은 음식사진을 점화하여 검증 하였다. 그 결과 연구 1에서는 마음-신체의 이원론조건에서 마음-신체가 연결되는 물리주의 조건보다 건강을 위한 행동의향이 더 낮게 나타났다. 연구 2에서는 이원론조건에서 채식제품의 선택의향과 배려의 가치선호도가 더 낮게 나타났다. 연구 3에서는 건강하지 않은 음식조건에서 건강한 음식조건보다 이원론의 점수가 더 높게 나타났다. 이 결과는 마음-신체의 관계에 대한 개인의 생각이 건강을 위한 행동과 사회적 가치의 활성화에 차별화된 영향을 끼칠 가능성을 보여준다.

이 연구의 목적은 척추 자기공명영상 검사 시, 검사시간을 단축할 수 있는 기법인 SENSE와 CS-SENSE를 경추, 흉추, 요추 검사 시 어떤 기법을 적용하는 것이 효과적인지 알아보기 위함이다. 본 연구는 2022년 10월부터 2023년 3월까지 척추질환 및 의심 환자 102명을 대상으로 분석하였다. 사용된 장비는 필립스 사의 3.0T Ingenia Elition X와 20채널 두경부 코일과 44 채널 척추 코일을 사용하였다. 본 연구는 축상 T2강조 고속스핀에코를 SENSE와 CS-SENSE factor 1.5, 2, 3으로 각각 영상을 획득하고, 정량평가는 신호대잡음비와 대조대잡음비를 각 factor 별로 대응 표본 t-test를 진행하였고, 정성평가는 2명의 평가자의 평가점수를 Kruskal-wallis test로 비교하였다. 정량평가 결과, SENSE보다 CS-SENSE가 신호대잡음비와 대조대잡음비가 높게 나왔다. 정성평가 결과, 경추, 요 추는 CS-SENSE 사용 시 평가점수가 높게 나왔고, 흉추는 SENSE 사용 시 평가점수가 높게 나왔다. 결론적으로 척추 MRI 검사 시, 경추, 요추는 CS-SENSE를, 흉추는 SENSE를 사용하는 것이 효과적이다.

아일랜드의 민족주의자이자 작가인 윌리엄 버틀러 예이츠(1865-1939)의 문학적 재능에는 여러 측면이 있다. 아일랜드 신화와 민속을 영국 식민지주의에 대한 저항으로 활용하고, 1916년 부활절 봉기와 같은 아일랜드 민족주의 투쟁의 긴 역사에서 일어난 사건을 찬양하고, 철학적 묵상, 선견지명적 순간, 상징주의, 낭만주의 등 그는 다양한 문학 장르에서 이 모든 것을 다루었다. 예이츠의 시가 그의 문학 작품에서 가장 중요한 자리를 차지하고 있다는 것은 부인할 수 없다. 예이츠의 성격의 여러 측면 중에서 아일랜드 혁명가 모드 곤의 연인으로 묘사된 예이츠는 잘 알려져 있다. 그녀와 그의 삶에 들어온 다른 여성들에게 영감을 받아 그는 상당수의 연애시를 썼다. 이 논문의 목적은 예이츠의 선택된 연애시에서 여성에 대한 표현을 분석하여 남성의 여성에 대한 태도와 다양한 사랑의 뉘앙스에 대한 그들의 경험에 빛을 비추는 것이다. 이는 아일랜드와 세계 다른 지역의 여성 운동에서 일어난 사건으로 인해 여성의 지위가 변화했다는 점을 감안할 때 중요하다. 이 논문은 세기의 전환기에 공공 영역에서 활동하는 “새로운 여성”이 등장했음에도 불구하고 예이츠의 연애시를 포함한 연애시는 궁정 연애의 전통을 이어가며 사랑하는 사람의 아름다움과 수동성을 찬양한다고 주장한다. 이 논문은 페미니즘 이론의 통찰력을 이용하여 시를 분석한다.

본 연구에서는 20∼50대 성인 여성을 대상으로 SNS를 통한 네일샵의 활용실태 및 SNS 정보 신뢰도와 네일샵 선택요인에 미치는 영향을 알아보고, SNS를 통한 효과적인 홍보를 통하여 고객 만족과 충성고객 확보 및 네일업계의 경영전략에 기여 하고자 연구를 진행하였다. 설문 조사는 SNS를 사용하며 네일샵을 이용해 본 20∼50대 성인 여성을 대상으로 최종 403부를 분석하여 사용하였다. 연구 결과, 일반 적 특성에 따른 SNS를 통한 네일샵의 이용실태에서는 각 요인에 따라 차이가 있는 것으로 나타났으며, SNS를 통한 네일샵 이용실태에 따른 정보 신뢰도와 SNS 네일샵 선택요인, 네일샵 SNS 활용에 따른 SNS 정보 신뢰도, 네일샵 선택요인에 차이가 있는 것으로 나타났다. 또한, SNS 정보 신뢰도가 SNS를 통한 네 일샵 선택요인에 영향을 미치는 것으로 나타났다. 본 연구는 네일샵 경영전략 수립을 위한 마케팅의 기초 자료 및 네일샵을 이용하는 소비자들의 만족도를 높여 네일 미용 시장의 활성화에 도움이 될 수 있을 것이 다.

PURPOSES : This study explores the preference of shared autonomous vehicle service in an underground dedicated environment. METHODS : A stated preference survey was conducted to examine the mode choice behaviors on autonomous vehicle service competing with existing modes. Multinomial logit was employed to estimate the parameters of explanatory variables from the surveyed data. The model was estimated with alternative specific parameters rather than generic parameters. The value of time was also estimated using the parameters of the mode choice model. RESULTS : The results showed that the travel cost had the highest sensitivity to public transportation and the lowest to private cars. We also found that the value of the in-vehicle travel time was highest for private cars, lowest for public transportation, and intermediate for SAVs, suggesting that SAVs could serve as a premium public transport option. Additionally, the out-vehicle time coefficient was higher for public transportation compared to that for SAVs, indicating that users are more willing to tolerate longer out-vehicle times for SAVs due to their high-speed service compared to that of public transportation. CONCLUSIONS : This study presents a direction for policy regarding the adoption of shared autonomous vehicle services by considering the attributes that are valued by users of each mode.

영향 관계를 분석하고, 그 영향 관계에서 직업가치관의 매개적 역할을 검증하고자 하였다. 이를 위해 S시와 K시의 성인대학생 320명을 대상으로 설문조사를 실시하였고, 이중 응답에 누락이 있거나 불성실하게 응답한 14 부를 제외한 총 306부의 자료가 분석되었다. 본 연구의 결과는 다음과 같 다. 첫째, 전공선택과 직업가치관이 전공만족도에 정적으로 유의미하게 영 향을 미치는 것으로 나타났다. 둘째, 성인대학생의 전공선택이 전공만족도 관계에서 직업 가치관이 부분매개효과를 미치는 것으로 나타났다. 이는 성 인대학생의 전공만족도와 직업 가치관 그리고 전공선택과 직업가치관이 전 공만족도에 긍정적 효과를 미친다는 것을 시사한다. 이에 성인대학생이 직 업가치관 형성을 통한 전공 만족도를 높일 수 있는 방안을 제공하였다.

Fish resource surveys were conducted near Jeju Island in June, August and October 2021 using an underwater camera monitoring system, fish pots, and SCUBA diving methods. The efficiency of the methods used to survey fish resources was compared using the number of individuals compared to area per unit time (inds/m3/h) and the number of species compared to area per unit time (spp./m3/h). As a result of comparing the number of individuals compared to the area per unit time (inds/m3/h), the order was underwater camera 214.69, SCUBA diving 124.62, and fish pots 0.57 inds/m3/h. The number of species compared to area per unit time (spp./m3/h) is in the following order: SCUBA diving 0.85, underwater camera 0.38, and fish pots 0.01 spp./m3/h. The fish resource monitoring method using underwater cameras was found to be more efficient in individual counts, and the SCUBA diving method was found to be more efficient in species counts. When considering cost and survey efficiency, the fish resource survey method using underwater cameras was judged to be more effective. The results of this study are expected to be widely used in estimating the population density of fish, which is the core of future fisheries resource surveys.

This study proposes the use of a cobalt-based Prussian blue analogue (Co-PBA; potassium cobalt hexacyanoferrate), as an adsorbent for the cost-effective recovery of aqueous ammonium ions. The characterization of Co-PBA involved various techniques, including Fourier-transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, nitrogen adsorption-desorption analysis, and zeta potential. The prepared Co-PBA reached an adsorption equilibrium for ammonium ions within approximately 480 min, which involved both surface adsorption and subsequent diffusion into the interior. The isotherm experiment revealed a maximum adsorption capacity of 37.29 mg/g, with the Langmuir model indicating a predominance of chemical monolayer adsorption. Furthermore, the material consistently demonstrated adsorption efficiency across a range of pH conditions. Notably, adsorption was observed even when competing cations were present. Co-PBA emerges as a readily synthesized adsorbent, underscoring its efficacy in ammonium removal and selectivity toward ammonium.

유두주위게실은 담석의 발생 및 재발에 영향을 주는 위험인자로 보고된 바 있다. 하지만 유두주위게실이 내 시 경 역 행 담 췌 관 조 영 술 ( e n d o s c o p i c r e t r o g r a d e cholangiopancreatography) 시행 중 선택적 담관 삽관의 성공률에 영향을 주는지에 대해서는 논란의 여지가 있다. 다만, 실제 임상에서는 유두주위게실로 인해 선택적 담관 삽관이 어려운 경우가 분명히 존재하며, 이를 해결하기 위한 다양한 방법이 보고되었다. 본고에서는 생검겸자를 이용해 선택적 담관 삽관에 성공한 증례를 보고하고자 한다.

This study contemplates the effect of social media advertising attributes on consumers’ purchasing decisions in cosmetic products. It will serve as basic data for SNS’s advertising strategy and marketing that promotes cosmetics sales. This study conducted a survey and went through the analysis process of SPSS v.25.0 statistical program. Frequency analysis, exploratory factor analysis, descriptive statistical analysis, correlation analysis, and regression analysis were conducted to analyze that informativity, reliability, entertainment, interactivity, and disturbance among SNS advertising attributes were used as effective advertising strategies, which had a positive effect on consumers' purchasing decisions. Therefore, in the cosmetics industry, it is necessary to seek strategies to actively utilize marketing in the social media space to promote consumers' purchase needs and to activate purchases.