• 감성과학
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• 제19권4호
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• pp.21-32
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• 2016

제품유형과 가격, 브랜드 이미지 등의 상호작용이 소비자의 구매의도와 품질지각에 미치는 효과에 대해서는 다양한 현상을 관찰해 왔다. 그러나 제품유형과 제조방식의 상호작용이 이 요인들에 미치는 효과에 대해서는 연구가 드물었다. 그러나 3D프린터의 등장은 기계를 통한 자동화 생산과 수공예로 대표되던 제조방식에 3D프린팅이라는 새로운 방식을 추가하였고, 이러한 새로운 틀이 소비자의 구매의도와 품질지각에 영향을 미칠 가능성이 있기에 연구가 필요하다. 따라서 본 연구는 제품유형과 제조방식의 상호작용이 구매의도와 품질지각에 미치는 효과를 검증하기 위하여 이루어졌다. 이를 위한 실험 1은 성격이 다른 제품유형(드론 vs. 바이올린 vs. 컵)을 선정하였고, 제품유형별로 선호하는 제조방식이 다르게 나타나는지 측정하였다. 결과적으로 소비자들은 드론과 같은 최신제품은 3D프린팅 제작을, 바이올린은 수공예 제작을, 컵은 대량생산이 용이한 기계 제작을 선호하는 것으로 나타났다. 실험 2는 제품유형에 따른 제작방식 선호의 차이가 구매의도와 품질지각에 미치는 영향에 대한 검증을 시도하였다. 즉 드론은 3D프린팅 제조일 때 구매의도가 가장 높았고, 바이올린은 수공예일 때 구매의도가 가장 높았으며, 컵은 기계 제작일 때 구매의도가 가장 높았다. 또한 드론은 제작방식 간 품질지각에 차이가 없었던 반면, 바이올린은 수공예의 품질을 가장 우수하다고 지각했고, 컵은 3D프린팅에서 품질을 가장 낮게 지각했다(컵은 3D프린팅 제작일 때 구매의도도 가장 낮았다). 본 연구가 소비자 심리학, 마케팅, 광고 등의 분야에 폭넓은 시사점을 줄 것으로 기대한다.

• Asian-Australasian Journal of Animal Sciences
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• 제13권5호
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• pp.681-685
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• 2000

A computer software was developed in our laboratory to automatically control the pigs environment by the image analysis system (IAS), which monitors and analyzes the pig's behavior and feeds the results back to the computer hardware. Three feeding trials were conducted with growing pigs ($L{\times}Y$) to test the effectiveness of the IAS under various seasons. In all three trials, the open-sided conventional pens with half-slatted floor were used as controls; for the IAS treatment, fully-slatted floors were used in the windowless pens. Experiment 1 was conducted in the winter for 30 d with 24 growing pigs. There were two treatments (Conventional vs. IAS), and three pens (replicates) per treatment. During the growing period, the feed efficiency was significantly (p<0.05) improved by the IAS. In addition, the pigs reared under the IAS during the growing period displayed better growth rate during the finishing period than did the pigs reared under the conventional conditions. Experiment 2 was conducted in the summer for 30 d with 24 growing pigs. The experimental design was the same as Experiment 1. During the finishing period, all the pigs were kept in conventional open-sided pens until their market weights to evaluate their carcass characteristics. During the growing period, the growth rate and feed efficiency of the pigs in the IAS was better than those of the control pigs. In addition, various carcass characteristics were significantly improved by the IAS rearing during the growing period. Experiment 3 was conducted with 30 growing pigs for 30 d in the spring. The experimental design was the same as Experiment 1. No difference was found in growing performance between the control and IAS pigs. It could be concluded that the IAS is effective in providing optimum conditions for the growing pigs in summer and winter seasons. In addition, providing an optimum environment during the growing period results in improved growth rate, feed efficiency, and carcass qualities for the finishing pigs.

• Korean Journal of Radiology
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• 제22권8호
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• pp.1266-1278
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• 2021

Objective: We aimed to compare the aortic valve area (AVA) calculated using fast high-resolution three-dimensional (3D) magnetic resonance (MR) image acquisition with that of the conventional two-dimensional (2D) cine MR technique. Materials and Methods: We included 139 consecutive patients (mean age ± standard deviation [SD], 68.5 ± 9.4 years) with aortic valvular stenosis (AS) and 21 asymptomatic controls (52.3 ± 14.2 years). High-resolution T2-prepared 3D steady-state free precession (SSFP) images (2.0 mm slice thickness, 10 contiguous slices) for 3D planimetry (3DP) were acquired with a single breath hold during mid-systole. 2D SSFP cine MR images (6.0 mm slice thickness) for 2D planimetry (2DP) were also obtained at three aortic valve levels. The calculations for the effective AVA based on the MR images were compared with the transthoracic echocardiographic (TTE) measurements using the continuity equation. Results: The mean AVA ± SD derived by 3DP, 2DP, and TTE in the AS group were 0.81 ± 0.26 cm², 0.82 ± 0.34 cm², and 0.80 ± 0.26 cm², respectively (p = 0.366). The intra-observer agreement was higher for 3DP than 2DP in one observer: intraclass correlation coefficient (ICC) of 0.95 (95% confidence interval [CI], 0.94-0.97) and 0.87 (95% CI, 0.82-0.91), respectively, for observer 1 and 0.97 (95% CI, 0.96-0.98) and 0.98 (95% CI, 0.97-0.99), respectively, for observer 2. Inter-observer agreement was similar between 3DP and 2DP, with the ICC of 0.92 (95% CI, 0.89-0.94) and 0.91 (95% CI, 0.88-0.93), respectively. 3DP-derived AVA showed a slightly higher agreement with AVA measured by TTE than the 2DP-derived AVA, with the ICC of 0.87 (95% CI, 0.82-0.91) vs. 0.85 (95% CI, 0.79-0.89). Conclusion: High-resolution 3D MR image acquisition, with single-breath-hold SSFP sequences, gave AVA measurement with low observer variability that correlated highly with those obtained by TTE.

• 대한지역사회영양학회지
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• 제20권5호
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• pp.362-374
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• 2015

Objectives: This study was performed to investigate the effects of overestimation of their own body shape on weight control behaviors, mental condition, physical activity, dietary behavior, health-related quality of life, and nutritional status among young Korean females. Methods: A total of 1,514 women aged 20-39 years who are not pregnant and lactating among those who participated in the Fifth Korea National Health and Nutrition Examination Survey (2010~2011), were analyzed and grouped into underestimation (n=120), normal estimation (NE, n=840), and overestimation (OE, n=554), based on their body perception compared to actual percent ideal body weights. Variables were compared between OE group and NE group. Results: The subjects in OE group were significantly younger (29.5 vs. 30.5 years, respectively p < 0.05) and had lower body mass index (20.9 vs. 22.2 respectively, p < 0.01), health-related quality of life measured by EQ-5D (EuroQol-5 Dimension)(0.97 vs. 0.98 respectively, p < 0.05), nutrition adequacy ratio (NAR) of protein (0.91 vs. 0.93 respectively, p < 0.05), phosphorous (0.93 vs. 0.96 respectively, p < 0.05), and iron (0.70 vs. 0.75 respectively, p < 0.01), and index of nutrition quality (INQ) of iron (0.84 vs. 0.89 respectively, p < 0.05) compared to those in the NE group. The results of logistic regression showed that unmarried status (OR 1.32; 1.01~1.72) and severely underweight/underweight status (OR 1.94; 1.01~3.75)/(OR 1.81; 1.34~2.45) were significantly related to the probability of overestimation by the subjects. Significantly more women in OE group practiced fasting, skipping meals, and taking prescribed pills to lose body weights and had skipped breakfast compared to those in the NE group. Conclusions: The results of this study suggested that the Korean young women's distorted perception of own body shape may be associated with undesirable weight control behavior, low quality of life, and lower nutritional status. Therefore, nutrition education for this group should include information on correct body shape perception and its importance.

• 한국의류학회지
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• 제30권9_10호
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• pp.1485-1493
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• 2006

This study was to investigate the effect of different scouring methods on mechanical properties and appearance of lyocell. Two different scouring methods were adopted for the study; one was the traditional scouring with alkali and the other was enzymatic scouring. Enzymatic scouring was carried with four different enzymes; C1 : Cellusoft L, C2 : Cellusoft UL, D1 : Denimax 992L, D2 : Denimax Acid XCL. The mechanical properties of scoured lyocell were measured using KES-FB. The appearance of scoured samples was analyzed by 3D CAD SYSTEM of i-Designer. While the untreated fabric showed the best linearity because it is stiff, alkali treated samples showed the worst dimensional stability and distorted easily. Enzyme treated samples, especially C1 treated samples showed the best dimensional stability. In addition, enzyme treated samples showed low bending rigidity compared to the alkali treated samples. It means that the enzyme treated samples are more flexible than alkali treated samples. However, the smoothness of the sample's surface treated by either of methods did not show much difference. From the study, it was suggested that the enzymatic scouring for lyocell could help to gain natural silhouette.

• 방송공학회논문지
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• 제17권4호
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• pp.551-564
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• 2012

미디어 이용자는 미디어에 노출되는 순간 다양한 심리적 반응을 겪게 된다. 3DTV 콘텐츠 역시 미디어 이용자가 그것을 시청하면서 여러 가지 심리적 지각을 하게 되는데, 본 연구는 3D 영상의 시청 시간 변인에 따른 수용자 인식에 대하여 알아보았다. 즉 3DTV 음악 프로그램을 본 수용자들이 시청시간(20분 vs. 40분)에 따라 3D 영상의 긍정적 요소인 인지된 특성과 인상, 프레즌스, 즐거움과 부정적 요소인 피로도와 부자연스러움을 느끼는데 차이가 있는지 알아보았다. 40명의 피험자를 대상으로 실험연구를 진행한 후, 연구문제를 해결하기 위해 다변량분석, 다변량공분산분석, 그리고 일원변량분석을 실시하였다. 연구 결과, 인지된 특성에서는 집단 간 유의미한 차이는 발견되지 않았지만 근접감, 선명도, 메시지 전달력 등 하위 차원에서 유의미한 차이가 나타났으며, 그 중 메시지 전달력에서 가장 큰 차이를 보였다. 인상과 관련해서는 시청시간별로 집단 간 유의미한 차이가 없었으나 하위요인 중에서는 화려함과 창의감이 시청시간 변인에 따른 차이를 보였다. 프레즌스의 경우, 시청시간별로 집단 간 유의미한 차이가 나타났고, 특히 하위차원인 시간관여에서 유의미한 차이가 가장 크게 나타났다. 즐거움에서는 시청시간 별로 유의미한 차이가 나타나지 않았다. 부정적 요소에서는 시청시간 별로 집단 간 유의미한 차이가 없었으나, 하위 차원인 부자연스러움에서 유의미한 차이가 있는 것으로 나타났다.

• 산업융합연구
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• 제21권11호
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• pp.1-12
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• 2023

최근 SNS의 폭발적인 인기에 힘입어 SNS 마케팅의 활용이 중요해지고 있으며, 이 과정에서 SNS 레이아웃의 Image 와 Caption 순서의 중요성도 커지고 있다. 이에 본 연구는 SNS 레이아웃의 이미지와 텍스트 순서가 사용자 태도에 어떠한 영향을 미치는지를 살펴보기 위해 진행되었다. 본 연구를 위해 대구·경북에 거주하는 일반인과 대학(원)생들 350명을 대상으로 설문조사를 실시하였다. SPSS 21.0 프로그램을 이용하여 PROCESS, 회귀분석, t-test를 진행하였다. 연구 결과, Image First 레이아웃이 Caption First 레이아웃에 비해 접근성이 높은 것으로 확인되었으며, Caption First 레이아웃이 Image First 레이아웃에 비해 진단성이 높은 것으로 확인되었다. SNS 레이아웃이 사용자 태도에 미치는 영향에 대한 3가지 경로의 매개효과를 검증하였다. SNS 레이아웃이 사용자 태도에 미치는 영향에 진단성과 유용성이 매개하는 경우와 접근성, 진단성 및 유용성이 매개하는 경우의 간접효과를 확인하였다. 두 경우 중 진단성과 유용성의 매개효과가 더 높게 나타났다. 또한 접근성이 진단성에 미치는 영향은 관여도가 낮은 경우보다 높은 경우 더 높게 나타났다.

• 치과방사선
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• 제12권1호
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• pp.49-56
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• 1982

The purpose of this study was to observe the anatomic variation of condylar head and the positional relationship between condylar head and other anatomic structures of head by means of cephalometry using the submentovertex cephalogram from each person in centric occlusion for producing a good quality of temporomandibular joint radiograph. The 100 submentovertex cephalograms of 100 Korean adults consisted of 50 females ranged from 20 to 24 years age and 50 males ranged from 22 to 30 years age, were studied and analyzed statistically. The results were as follows; 1. The mean of the horizontal angulation of condylar head to the transmeatal line (EE-LA) was 18.5° (S.D. 7.9°), and all measurements that indicate the horizontal angulation of condylar head showed considerable differences among individuals. 2. In the comparison of male vs. female in the measurements, statistically significant differences were found in the majority of measurement items, and with exception of R-LA and LA-LA, the rest of these measurements were larger in male than in female. 3. In the comparison of left vs. right in the measurements, statistically significant differences were found in the majority of measurement items, and with exception of PC-CC, the rest of these measurements were larger in right than in left. As above, because the majority of measurements that involve the horizontal angulation of condylar head varied among individuals, between male and female, and between left and right, the condition of various temporomandibular joint radiography should be determined by means of cephalometry using the submentovertex cephalogram for producing the accurate radiographic image of temporomandibular joint.

• The Korean Journal of Physiology and Pharmacology
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• 제20권5호
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• pp.507-514
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• 2016

Although 3D-complex fractionated atrial electrogram (CFAE) mapping is useful in radiofrequency catheter ablation for persistent atrial fibrillation (AF), the directions and configuration of the bipolar electrodes may affect the electrogram. This study aimed to compare the spatial reproducibility of CFAE by changing the catheter orientations and electrode distance in an in -silico left atrium (LA). We conducted this study by importing the heart CT image of a patient with AF into a 3D-homogeneous human LA model. Electrogram morphology, CFAE-cycle lengths (CLs) were compared for 16 different orientations of a virtual bipolar conventional catheter (conv-cath: size 3.5 mm, inter-electrode distance 4.75 mm). Additionally, the spatial correlations of CFAE-CLs and the percentage of consistent sites with CFAE-CL<120 ms were analyzed. The results from the conv-cath were compared with that obtained using a mini catheter (mini-cath: size 1 mm, inter-electrode distance 2.5 mm). Depending on the catheter orientation, the electrogram morphology and CFAE-CLs varied (conv-cath: $11.5{\pm}0.7%$ variation, mini-cath: $7.1{\pm}1.2%$ variation), however the mini-cath produced less variation of CFAE-CL than conv-cath (p<0.001). There were moderate spatial correlations among CFAE-CL measured at 16 orientations (conv-cath: $r=0.3055{\pm}0.2194$ vs. mini-cath: $0.6074{\pm}0.0733$, p<0.001). Additionally, the ratio of consistent CFAE sites was higher for mini catheter than conventional one ($38.3{\pm}4.6%$ vs. $22.3{\pm}1.4%$, p<0.05). Electrograms and CFAE distribution are affected by catheter orientation and electrode configuration in the in-silico LA model. However, there was moderate spatial consistency of CFAE areas, and narrowly spaced bipolar catheters were less influenced by catheter direction than conventional catheters.

• 한국의학물리학회:학술대회논문집
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• 한국의학물리학회 2002년도 Proceedings
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• pp.154-156
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• 2002

Brachytherapy has a long history in the treatment of cancer. However, the treatment planning technique for brachytherapy has lagged somewhat behind the corresponding developments for external beam therapy as far as the imaging technique is concerned. Currently, the orthogonal-film-based treatment planning is performed at most institutions even though the CT-based planning is available. The aim of this study is to evaluate the CT-based vs. the orthogonal-film-based treatment planning in cervix cancer. The doses to point A, point B, rectum and bladder points according to ICRU 38 were calculated for the two methods above. In addition, the volumetric studies such as 3D dose computation and DVH were obtained for the CT-based planning. For the bulky tumor, the isodose lines of point A prescription were not fairly covered for the CTV. The CT -based dose planning can overestimate the maximum dose delivered to bladder and rectum by 30%. The CT-based planning has several advantages over the orthogonal-film-based such as 3D dose display, DVH, and more accurate target delineation. It is suggested that the prescription point in cervix cancer be revised especially for the bulky tumor.