• Title/Summary/Keyword: Preference

Search Result 9,674, Processing Time 0.033 seconds

A Study on the Busan Port Selection Factor Changes of Shipping Companies in the Post-Corona Era (포스트 코로나 시대 선사들의 부산항 선택요인 변화분석)

  • Sim, Min-Seop;Kim, Joo-Hye;Kim, Yul-Seong;Nam, Hyung-Sik
    • Journal of Navigation and Port Research
    • /
    • v.46 no.3
    • /
    • pp.216-226
    • /
    • 2022
  • The industry trends of major global shipping and ports in the world are changing rapidly because of the spread of COVID-19, resulting in the reorganization of GVCs by global companies, and strengthening of environmental regulations by IMO. Based on these environmental changes, Busan Port was ranked 5th in the global container port rankings in 2013. However, since the outbreak of COVID-19, Busan Port's global container port ranking in 2020 fell to 7th, behind Qingdao Port. In the post-Corona era, for Busan Port to compete with global container ports and gain a competitive edge in the port, it is necessary to accurately identify the competitive factors of Busan Port and establish a comprehensive policy. Thus, the purpose of this study was to analyze how the competitive factors of Busan Port have changed in the selection of ports by current global shipping companies, compared to the first study conducted in 2005. Additionally, a comprehensive policy plan was established by identifying factors impacting the frequency of future calls as well as the growth potential of Busan Port, through a stepwise multiple regression analysis. As a result of the analysis, it was found that the call preference and growth potential of Busan Port in the post-Corona era are most affected by 'port facilities'. And it was found that the calls frequency in the future is most impacted by 'the geopolitical location' factor.

The Effect on Legibility of the Inner Space Width of Hangeul Characters: Focusing on the Outer Space Width (한글꼴의 속공간 넓이가 가독성에 미치는 영향: 외부 속공간을 중심으로)

  • Jeon, Eoun-Sun;Kim, Sung-Kye
    • The Journal of the Korea Contents Association
    • /
    • v.22 no.7
    • /
    • pp.498-510
    • /
    • 2022
  • Among the various factors that form fonts, the concept of a new Korean font term called Inner Space Width was developed and the effect of changes in fonts applied to readability was analyzed. [Experiment 1] An empirical analysis was attempted on how the Korean-shaped Outer Space Width affects readability among the texts. Among the factors that make up the paragraph, Outer Space Width by letter size, letter size, letter spacing, letter spacing, and letter shape was composed of Yoon Myung-jo 110-160 and Inner Space Width of Yoon Myung-jo 110 was the widest at 26.83%. [Experiment 2] In-depth interviews with experts were conducted to derive factors and evaluation indicators constituting the inner space. Inner Space Width is evaluated as a complex factor that affects preference and fatigue, and is related to understanding and speed. This study empirically reviewed the effect on readability using the concept of Inner Space Width in the absence of existing research on Hangul-shaped fast space, and is expected to be actively used in the development of fonts in the future.

A Study on the Listener's Emotional Perception of Music According to Harmonic Progression Level (음악의 화음 전개 수준에 따른 감상자의 정서 지각 연구)

  • Ryu, Hae In;Choi, Jin Hee;Chong, Hyun Ju
    • Journal of Music and Human Behavior
    • /
    • v.19 no.1
    • /
    • pp.93-112
    • /
    • 2022
  • The purpose of this study was to compare participants' perceived emotion following harmonic changes in music. In this study, 144 participants, aged 19 to 29 years, listened to music online that included low to high harmonic progression in tonal music (major-minor). After listening to each piece of music, participants were asked to rate 4 items using a 7-point Likert scale: emotional potency, arousal, degree to which the harmony impacted the listener's emotions, and listener's preference for the music. There were significant differences between each of the four items upon the level of harmonic progression. When the participants were divided into two groups (i.e., those with a background in music and those with no background in music), there was a significant difference between the groups in terms of emotional potency, but there was no significant interaction effect. This study confirmed that various emotional responses in listeners can be induced by controlling the exogenous variables in musical excerpts. Based on this, it is expected that the harmonic progression level can be provided to the client to be used as an effective therapeutic tool in music therapy intervention.

Changes in Properties of Polysaccharide Iota Carrageenan-added Surimi Mixture During Cold Storage (카라기난 첨가 수리미 혼합물의 냉장 저장 중 특성 변화)

  • Han, Hyeon-Su;Woo, Ga-Eun;Kim, Su-Hyeong;Park, Ye-Lin;Kang, Yoo-Seok;Park, Jeong-Cheol;Seo, Hun-Seo;Choi, Ye-Hui;Jeong, So-Mi;Hwang, Hye-Ji;Lee, Ga-Hye;Ahn, Dong-Hyun
    • Korean Journal of Fisheries and Aquatic Sciences
    • /
    • v.55 no.5
    • /
    • pp.655-661
    • /
    • 2022
  • Iota carrageenan-containing surimi was refrigerated for 7 days to investigate the change in its properties. Physical properties, color differences, and sensory evaluation were tested for analysis after addition of 0-3 Wt% iota carrageenan. In unheated surimi, the 2% carrageenan- containing surimi had higher chromaticity and color difference compared to the surimi without added carrageenan. However, the surimi with 3% iota carrageenan showed enhanced yellowness, resulting in a modified color difference. Surimi containing iota carrageenan showed the same trend in color difference in heated surimi after storage for 7 days, particularly when carrageenan content was 2% or greater. The hardness, gumminess, and chewiness of the heated Iota carrageenan-containing surimi also increased after 7 days of storage. Compared to surimi without added carrageenan, the heated Iota carrageenan-containing surimi had higher hardness, gumminess, chewiness, and lower adhesiveness after storage. The overall preference for surimi decreased, while the hardness increased, when carrageenan was added. Therefore, the addition of the iota carrageenan to stored surimi can significantly enhance its hardness.

Changes in Microbial Properties and Sensory Characteristics during the Storage of Kimchi in Containers with Native Plant Extracts (자생식물 추출물을 첨가하여 개발된 저장용기의 김치 저장 중 미생물과 관능적 특성의 변화)

  • Woo, Nariyah;Lee, Hye-Ran;Ko, Seonghee
    • The Journal of the Korea Contents Association
    • /
    • v.22 no.1
    • /
    • pp.646-655
    • /
    • 2022
  • This study was conducted to investigate the quality characteristics of Kimchi during fermentation and storage according to containers with native plant extract. The containers used in the experiment were antimicrobial polypropylene containers(KAPP) developed with the addition of native plant extracts, and it was tested by comparing the microbial changes and sensory characteristics of the existing commercial containers, such as polypropylene containers(KPP), stainless steel containers(KST), and porcelain containers(KPC). Change in total microbial cell were similar for each container. Coliform maintained the lowest level from 15 days after storage to 50 days. Leuconostoc spp. and Lactobacillus spp. showed a rapid increase in all four storage containers until the 15th day of storage and then decreased. The KAPP container maintained its highest level. The sensory evaluation was carried out on Kimchi optimal condition(storage 40 days). The sensory scores of KAPP were generally higher than those of other experimental samples in characteristics of appearance, odor, taste and overall preference. As a result, KAPP container has an excellent antibacterial effect as compared with the three commercially available storage containers, is effective for fermentation of lactic acid.

Multimodal Route Selection from Korea to Europe Using Fuzzy AHP-TOPSIS Approaches: The Perspective of the China-Railway Express (한-유럽 복합운송 경로선택에 관한 연구 중국-유럽 화물열차를 중심으로)

  • Wang, Guan;Ahn, Seung-Bum
    • Journal of Korea Port Economic Association
    • /
    • v.37 no.4
    • /
    • pp.13-31
    • /
    • 2021
  • Since the signing of the Korea-Europe Free Trade Agreement, the volume of trade transactions between South Korea and Europe has increased. The traditional single-mode transport system has been transformed into an intermodal transport system using two or more modes of transport. In addition, the conventional sea and air transport routes have been restricted, leading to a decline in Korean exports to Europe, and the rail transport mode is becoming mainstream in the market due to the influence of COVID-19. This paper focuses on the China-Railway Express to explore a new intermodal transport route from Korea to Europe. First, the fuzzy analytic hierarchy process (AHP) is used to evaluate the factor weights when selecting intermodal transport routes from Korea to Europe. Then, the TOPSIS (Technique for Order of Preference by Similarity to Ideal Solution) method is used to rank three alternatives. The results show that among the four factors (total cost, total time, transportation capability, and service reliability), the total cost is the most significant factor, followed by the total time, service reliability, and transportation capability. Furthermore, the alternative route 1 (Incheon-Dalian-Manchuria-Hamburg) is preferred.

Recent Advances in the Biotechnological Production of Natural Vanillin (생물공학에 기반한 천연 바닐린 생산에 관한 최근 연구)

  • Kim, Hyun-Song;Kim, Young-Ok;Lee, Jin-Ho
    • Journal of Life Science
    • /
    • v.31 no.11
    • /
    • pp.1046-1055
    • /
    • 2021
  • Vanillin is the primary flavor and fragrance compound of natural vanilla and is extensively used in the food, beverage, perfumery, pharmaceutical industries, and other applications. Vanillin can be produced by chemical synthesis, extraction from vanilla plants, microbial bioconversion of natural precursors to vanillin, and direct fermentation using glucose. Currently, most commercially available vanillin is produced by extraction from cured vanilla pods and by chemical synthesis using guaiacol and glyoxylic acid as starting raw materials. Due to environmental issues, health complaints, preference for natural sources, and the limited supply and soaring price of natural vanilla, biotechnology-based vanillin production is regarded as a promising alternative. As many microorganisms that are able to metabolize several natural precursors, including ferulic acid, eugenol, isoeugenol, and lignin, and accumulate vanillin, have been screened and evaluated, myriad strategies and efforts have been employed for the development of commercially viable production technology. This review outlines the recent advances in the biotechnological production of natural vanillin with the use of these natural precursors. Moreover, it highlights the recent engineering approaches for the production of natural vanillin from renewable carbon sources based on the de novo biosynthetic pathway of vanillin from glucose, together with appropriate solution strategies to overcome the challenges posed to increase production titers.

Empirical Study of the PLSP (Priority Land and Signal Preemption for Emergency Vehicles (긴급차량의 우선차로 및 우선신호 도입효과 -청주시를 대상으로-)

  • Lee, Jun;Ham, Seung Hee;Lee, Sang Jo
    • Journal of the Society of Disaster Information
    • /
    • v.16 no.4
    • /
    • pp.650-657
    • /
    • 2020
  • Purpose: In this study, the effectiveness of pilot project of PLSP (Priority Lane and Signal Preference) system, which was operated in Cheongju City, was analyzed. Method: The priority signal was operated by a police officer switching to a blue signal when approaching a fire truck through CCTV, and the priority lane of emergency vehicles was displayed on the road to enable preferential traffic. VISSIM simulation analysis was performed for the 1.2km section (3.8km) of the pilot project section and vehicle data was analyzed for some of the test operation sections. Result: Simulation analysis shows that the moving speed of the emergency vehicle can be increased by 42 km/h with the introduction of PLSP, which can be increased by approximately twice the speed. Travel time was reduced by about 3 minutes, and considerable improvements of 69% compared to cities that are not operating was analyzed. The pilot operation of Cheongju City showed a time-shortening effect of about two minutes on average, with the average time reaching 4 minutes and 14 seconds in the first period and the average time reaching 5 minutes and 40 seconds in the second period. Conclusion: The system has been shown to be effective in minimizing time-to-site arrival of emergency vehicles.

A Survey on the Recognition of Rehabilitative Robots for Therapy and Self-Efficacy in University Students Enrolled in the Department of Physical Therapy (물리치료학과 학생들의 재활로봇에 대한 인식도와 자기효능감 조사)

  • Kim, Tae-Ho;Kim, Da-Hyeon;Kim, Se-Yeon;Park, Ha-Yeoung;Lee, Eun-Kyung;Jung, In-Seon;Chun, Ji-Youn;Kim, Min-Hee
    • PNF and Movement
    • /
    • v.19 no.1
    • /
    • pp.115-125
    • /
    • 2021
  • Purpose: This study aimed to investigate basic data on the recognition of rehabilitation robots and self-efficacy through general characteristics of students in the department of physical therapy. Methods: This study surveyed 100 students in the Department of Physical Therapy at E University in Seongnam using Google Form, an online survey tool. The questionnaire consisted of 64 questions including 15 questions on general characteristics, 13 questions regarding recognition of rehabilitative robots, and 36 questions about self-efficacy. General self-efficacy consisted of three sub-factors: confidence, self-regulation efficacy, and task difficulty preference. Results: The recognition of rehabilitative robots according to general characteristics showed significant differences in age, level of education, and experience in searching rehabilitative robots; according to general characteristics, self-efficacy showed significant differences dependent on age and gender (p < 0.05). In addition, recognition of rehabilitation robots for students in the Department of Physical Therapy was found to have a significant effect on robot use self-efficacy (p < 0.05). Conclusion: There were significant differences in the scores of rehabilitation robot recognition and self-efficacy according to the general characteristics of students in the Department of Physical Therapy. For such reasons, it is important for students to have an opportunity to get educated on rehabilitation robots; in order to achieve this goal, domestic studies on rehabilitation robots must be actively conducted. The technological development of rehabilitation robots and the establishment of a system for domestic rehabilitation robots from both social and legal standpoints were found to be necessary based on a volume of domestic research.

Features of Problem-Finding and Problem-Solving of the Secondary Gifted Students in the Context of STEAM Convergent Problems (STEAM 문제 상황에서 중등 영재반 학생들이 나타낸 문제의 발견과 해결 특성)

  • Lee, Eunseon;Sim, Jaeho
    • Journal of Science Education
    • /
    • v.45 no.1
    • /
    • pp.23-41
    • /
    • 2021
  • This study is to investigate the characteristics of problem-finding and problem-solving abilities demonstrated by the secondary gifted students in the context of STEAM convergent problems. For this, using the STEAM convergence problem solving ability test, we qualitatively and quantitatively compared and analyzed the workbook outputs written in the process of finding and solving problems for each student in the gifted class. The results are as follows: First, we found that the speciality of the major of the proposed activity paper influenced the preference for questions and pattern of finding problems. Second, it was found that the difference in the ability to find and solve problems for a specific task was not by the major of the gifted class, but by the composition of the group. Third, in finding and solving the STEAM convergent problem, the individual creativity and the cooperative creativity of the group were more significant than the major. These results suggest that it is necessary to include the affective factors of gifted students and the concept of cooperation in problem-finding and problem-solving ability evaluation, and there is a need to develop a teaching and learning strategy that can improve cooperative problem-solving skills so that group creativity can be exhibited well.