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기능성 베이커리제품의 경험적가치가 고객만족과 재구매의도에 미치는 영향 : 해양관광도시 부산을 중심으로
강경구(Kang, Kyoung-ku) 한국해양관광학회 2021 해양관광학연구 Vol.14 No.3
The purpose of this study is to identify customer satisfaction and repurchase intentions for functional bakery products incorporating regional specialties of marine tourist destinations. It is a study on differentiation from existing products, characteristics of tourism products, improvement measures, and points for improvement. As a result of the study, Hypothesis 1 and Hypothesis 2 were accepted because economic value and cognitive value, which are sub-factors of the empirical value of functional bakery products, showed a significant positive (+) effect, but emotional value, social value, and rare value were rejected and partially adopted. As implications, through the consumption behavior of tourists, the economic value of “the functional products has excellent taste, worth the price, and differentiated from other products” and the cognitive value “various and interesting stories and new facts about functional products, it was a new experience.” affects customer satisfaction and repurchase intention
라이프스타일에 따른 해안가 베이커리카페 선택속성이 고객충성도에 미치는 영향
강경구(Kyoung-Ku Kang) 한국해양관광학회 2022 해양관광학연구 Vol.15 No.2
During the pandemic, daily life is expected to change significantly depending on lifestyles in a limited environment such as movement restrictions and social distancing. Seaside bakery cafes, centering on marine tourist destinations, raise expectations for differentiation not easily experienced in the city center. This study aims to suggest effective market segmentation and marketing strategies to managers by identifying various customer requirements and seeking strategic plans. First, the lifestyle group was divided into safety-seeking group, practicality seeking, and challenge-seeking group, and all groups showed differences in the selection attributes of bakery cafes. Second, the selection attributes of bakery cafes such as product, convenience, serviceability, and internal/external environment all had a significant effect on customer loyalty, and it was confirmed that internal/external environment had the highest influence. As a result of this study, it was confirmed that it is necessary to secure and develop attractive spatial characteristics according to the lifestyle of visitors. In other words, they prefer a practical, safe, healthy and convenient environment.
Kano모델을 활용한 디저트카페 선택속성에 따른 품질분류, 고객만족계수, PCSI지수 : 바다 전망을 갖춘 독립경영형태를 대상으로
강경구(Kang, Kyoung-Ku) 한국해양관광학회 2021 해양관광학연구 Vol.14 No.2
In this study, a method to further enhance customer satisfaction by identifying the characteristics of independent management-type dessert cafes, identifying improvement points and priorities according to characteristics through quality classification, against the backdrop of natural marine tourism such as ocean views. is a study to find out. As a result of quality classification of the results of this research into the Kano model from 13 selection attributes, attractive quality elements are harmonious with 8 drinks , favorite products , appropriate compared to other cafes , diversity , discrimination from other stores , changes regularly , parking facilities , toilet accessibility , classified. As a result of calculating the customer satisfaction coefficient based on this, the questions with the highest Better index were the items (90) of clean and comfortable toilets and hygienic management of equipment , but it reflecting the current satisfaction level. As a result of calculating the PCSI index, it was found that customer satisfaction can be improved through continuous improvement in attractive quality factors such as harmony with beverages and favorite products .
미세성형 기술과 패치의 선택적 제거방법을 이용한 이방성의 육각별 입자 제조
심규락,염수진,정성근,강경구,이창수,Shim, Gyurak,Yeom, Su-Jin,Jeong, Seong-Geun,Kang, Kyoung-Ku,Lee, Chang-Soo 한국청정기술학회 2018 청정기술 Vol.24 No.2
본 연구는 입자 내에서 패치의 위치를 정교하게 제어할 수 있는 새로운 친환경 공정기술에 관한 것이다. 물리화학적으로 안정한 소재를 활용한 미세성형 기술과 패치의 위치를 제어할 수 있는 선택적 제거방법을 결합하여 수행하였다. 미세성형 기술에는 이방성 구조의 패치입자의 형상을 안정적으로 구현하기 위하여, perfluoropolyether (PFPE) 마이크로몰드를 사용하였다. 이를 통하여, 소수성의 패치소재가 poly(dimethylsiloxane) (PDMS) 마이크로몰드 내로 확산되는 문제를 극복할 수 있었다. 그리고, 이는 패치의 우수한 형상 안정성과 소수성 패치소재를 이용한 패치입자 제조를 가능하게 하였다. 마지막으로 패치의 위치가 서로 다른 12종의 패치입자를 제조하여 향상된 공정 안정성을 확인하였다. 본 연구에서 제시한 미세성형 기술과 패치의 선택적 제거방법은 패치의 위치가 선택적으로 제어된 이방성의 입자를 적은 공정의 수를 거쳐 빠르게 제조할 수 있는 장점을 가진다. 또한 제조된 패치입자는 방향성이 유도된 자기조립 분야, 조절이 가능한 약물 전달 시스템 등의 다양한 연구에 널리 활용될 수 있으리라 기대한다. This study presents a novel and eco-friendly process that can precisely control the location of the patches on the patch particles. The method of manufacturing these anisotropic hexagram patch particles consists of sequential combinations of two separate methods such as a sequential micromolding technique for fabricating patch particles and a selective localization method for controlling the location of patches on the patch particles. The micromolding technique was carried out using physicochemically stable material as a micromold. In order to fabricate the highly stable patch anisotropic hexagram particles, the perfluoropolyether (PFPE) micromold was used to the process of the micromolding technique because they could prevent the problem of diffusion of hydrophobic monomers while conventional poly(dimethylsiloxane) (PDMS) micromold is limited to prevent the problem of diffusion of hydrophobic monomers. Based on combination methods of the micromolding technique and the selective localization method, the reproducibility and stability have been improved to fabricate 12 different types of anisotropic hexagram patch particles. This fabrication method shows the unique advantages in eco-friend condition, easy and fast fabrication due to less number of process, the feasibility of a mass production. We believe that these anisotropic hexagram patch particles can be widely utilized to the field of the directional self-assembly.
주사기 바늘 기반의 미세유체 장치를 이용한 단분산성 PEGDA 입자의 제조
진시형 ( Si Hyung Jin ),김태완 ( Taewan Kim ),오동석 ( Dongseok Oh ),강경구 ( Kyoung-ku Kang ),이창수 ( Chang-soo Lee ) 한국화학공학회 2019 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.57 No.1
본 연구는 주사기 바늘 기반의 미세유체 장치에서 균일한 polyethylene glycol diacrylate (PEGDA) 입자를 제조하는 새로운 방법을 소개한다. 미세유체 장치는 다양한 규격의 기성품들을 별도의 장비없이 조립하여 제작된다. 이 미세유체 장치에서 광개시제를 포함한 PEGDA 분산상과 오일의 연속상의 부피유속을 제어하여 단분산성 PEGDA 액적을 형성한다. PEGDA 액적은 장치의 말단에서 자외선 조사에 의해 입자로 중합된다. 입자의 크기는 부피유속과 미세유체 장치의 규격을 조절하여 손쉽게 제어되며 입자의 단분산도는 변동계수(coefficient of variation)값이 2.57%로 계산된다. PEGDA입자의 생물학적 응용을 증명하기 위해서 세포를 함입시키고 증식과 생존을 관찰한다. This study presents a novel method for preparing monodisperse polyethylene glycol diacrylate (PEGDA) microparticles in a dispensing needle based microfluidic device. The microfluidic devices are manufactured by manually assembling various off-the-shelf products without using additional equipment. In this microfluidic device, the volumetric flow rates of the dispersed phase of PEGDA solution and the continuous phase of oil are controlled to generate monodisperse PEGDA droplets. The PEGDA droplet contains photo-initiator thus it is crosslinked to microparticle by photopolymerization at the ends of the device. The particle size is easily controlled by adjusting the volume flow rate and the size of the microfluidic device. The monodispersity of the particles is calculated by a coefficient of variation of 2.57%. To demonstrate the biological applications of PEGDA particles, cells are encapsulated and observed for proliferation and viability.
PEO-PPO-PEO 블록 공중합체를 이용한 PDMS의 친수성 표면 개질 방법
이병진 ( Byungjin Lee ),진시형 ( Si Hyung Jin ),정성근 ( Seong-geun Jeong ),강경구 ( Kyoung-ku Kang ),이창수 ( Chang-soo Lee ) 한국화학공학회 2017 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.55 No.6
본 연구에서는 Poly (dimethylsiloxane) (PDMS)의 높은 소수성과 생체분자들의 비특이적 흡착 문제를 해결하기 위해 PEO-PPO-PEO 블록 공중합체의 포매(embeddeing) 방식을 이용하여 손쉬운 표면 개질 및 이의 최적화 조건을 조사하였다. 친수성 표면 개질의 특성은 PDMS 내에 포매된 블록 공중합체의 농도, 수침(water-soaking), 및 소수성 표면으로 회복 시간 등의 영향을 평가하였다. 개질된 PDMS 표면은 알부민 단백질(2 mg/ml)까지 단백질의 비특이적 결합 방지특성을 보였으며, 또한 O/W (Oil-in-Water) 에멀젼을 쉽게 형성할 수 있었다. In this study, we optimized a method of PEO-PPO-PEO block copolymer embedding, for solving non-spe-cific protein and biomolecular adsorption and high hydrophobicic surface property, which is widely known as problems of poly (dimethylsiloxane) (PDMS) that has frequently been used in basic biological and its applied research. We assessed its surface modification by controlling the concentration of embedded block copolymer, water-soaking time, and recovery time as variables by contact angle measurements. In order to evaluate its antifouling ability, adsorption of FITC-BSA molecules was quantified. Furthermore, we generated oil-in-water (O/W) emulsion as a proof-of-concept experiment to confirm that the optimized surface modification works properly.