建築物에서의 水壓 調節技法

송지수 대한설비공학회 1995 대한설비공학회 강연회 및 기타간행물 Vol.- No.-

경도인지장애군의 점화어 유형 및 방해자극 유무에 따른 문장 구조 산출 분석

송지수,성지은 한국언어청각임상학회 2024 Communication Sciences and Disorders Vol.29 No.1

Objectives: The purpose of the study is to examine if the lexical priming effect is valid in persons with mild cognitive impairment (MCI). In addition, this study attempted to examine the correlation between working memory and sentence production ability for MCI and healthy adults (HA). Methods: Fifteen individuals with MCI and sixteen HA described action pictures in sentences following lexical (agent or theme) primes. Priming effect was analyzed in terms of priming type and presence of distractor. Results: 1) Persons with MCI did show significantly lower proportion of passive sentences compared to HA. Overall, the proportion of passives were significantly higher in the theme primed condition versus the agent primed condition. 2) The difference in the presence of distractor stimuli in the agent primed condition was significantly larger than in the theme primed condition. 3) It was observed that the better the working memory ability of MCI participants, the higher the production of active sentences when compared with passive sentences in the theme primed condition. Conclusion: Persons with MCI used word-driven information as a strategy of sentence production like HA did. In addition, MCI participants showed difficulty in production of complex structures such as passive sentences. In previous research, most of the studies examined the priming effect through structural priming tasks for HA and aphasia patients. The results of this study also showed the effect of lexical priming in persons with MCI, and the finding of lower production of passive sentences in persons with MCI compared to HA emphasized the linguistic deficits that may appear in individuals with MCI.

페미니즘 앎(knowing) 단절과 지속의 조건: TERF 입장을 지지하는 여성들의 경험을 중심으로

송지수 한국여성학회 2023 한국여성학 Vol.39 No.2

This study focuses on the situations under which feminism knowing is interrupted and sustained in the process of position formation, maintenance, and change among women who support the position of TERF in South Korea. The main results of the study are as follows: Research participants note that they had to respond to feminist debates quickly and effectively in the digital space. The lack of formal institutions for challenging sexism limits opportunities to discuss and reflect on the structures that create differences in positions among women. In addition, the norm of the “perfect feminist” can also act as a constraint on knowledge by increasing fatigue with feminist activism itself. On the other hand, in trusted relationships, women can share their honest concerns and come to understand others in different situations. The significance of this study is that it explores the experiences of women who support TERF positions, and captures the impact of these experiences on their feminism knowing. This study aims to reveal that these women do not hold positions with firm convictions. In this context, evaluating their statements in digital spaces alone cannot change the reality that constrains the conditions of their knowing. Before criticizing their arguments, we should identify and change the factors that suspend the processes of feminism knowing.

상추잎 너비와 길이 예측을 위한 합성곱 신경망 모델 비교

송지수,김동석,김효성,정은지,황현정,박재성 (사) 한국생물환경조절학회 2023 생물환경조절학회지 Vol.32 No.4

식물의 잎의 크기나 면적을 아는 것은 생장을 예측하고 실내농장의 생산성의 향상에 중요한 요소이다. 본 연구에서는 상추 잎 사진을 이용해 엽장과 엽폭을 예측할 수 있는 CNN기반모델을 연구하였다. 데이터의 한계와 과적합 문제를 극복하기 위해 콜백 함수를 적용하고, 모델의 일반화 능력을 향상시키기 위해 K겹 교차 검증을 사용했다. 또한 데이터 증강을 통한 학습데이터의 다양성을 높이기 위해 image generator를 사용하였다. 모델 성능을 비교하기 위해 VGG16, Resnet152, NASNetMobile 등 사전학습된 모델을 이용하였다. 그 결과너비 예측에서 R2 값 0.9436, RMSE 0.5659를 기록한 NASNetMobile이가장 높은 성능을 보였으며 길이 예측에서는 R2 값이 0.9537, RMSE가 0.8713로 나타났다. 최종 모델에는NASNetMobile 아키텍처, RMSprop 옵티마이저, MSE 손실 함수, ELU 활성화함수가 사용되었다. 모델의 학습 시간은Epoch당 평균 73분이 소요되었으며, 상추 잎 사진 한 장을 처리하는 데 평균 0.29초가 걸렸다. 본 연구는 실내 농장에서 식물의 엽장과 엽폭을 예측하는 CNN 기반 모델을 개발하였고이를 통해 단순한 이미지 촬영만으로도 식물의 생장 상태를신속하고 정확하게 평가할 수 있을 것으로 기대된다. 또한 그결과는 실시간 양액 조절 등의 적절한 농작업 조치를 하는데 활용됨으로써 농장의 생산성 향상과 자원 효율성을 향상시키는데 기여할 것이다. Determining the size or area of a plant's leaves is an important factor in predicting plant growth and improving the productivity of indoor farms. In this study, we developed a convolutional neural network (CNN)-based model to accurately predict the length and width of lettuce leaves using photographs of the leaves. A callback function was applied to overcome data limitations and overfitting problems, and K-fold cross-validation was used to improve the generalization ability of the model. In addition, ImageDataGenerator function was used to increase the diversity of training data through data augmentation. To compare model performance, we evaluated pre-trained models such as VGG16, Resnet152, and NASNetMobile. As a result, NASNetMobile showed the highest performance, especially in width prediction, with an R_squared value of 0.9436, and RMSE of 0.5659. In length prediction, the R_squared value was 0.9537, and RMSE of 0.8713. The optimized model adopted the NASNetMobile architecture, the RMSprop optimization tool, the MSE loss functions, and the ELU activation functions. The training time of the model averaged 73 minutes per Epoch, and it took the model an average of 0.29 seconds to process a single lettuce leaf photo. In this study, we developed a CNN-based model to predict the leaf length and leaf width of plants in indoor farms, which is expected to enable rapid and accurate assessment of plant growth status by simply taking images. It is also expected to contribute to increasing the productivity and resource efficiency of farms by taking appropriate agricultural measures such as adjusting nutrient solution in real time.

신도시 아파트 단지내 근린상가 업종의 수직적 기능분화에 관한 연구

송지수,김찬호 중앙대학교 건설환경연구소 2000 環境科學硏究 Vol.11 No.2

This study identifies the vertical functional differentiation of commercial facilities in apartment complexes of new towns in the microscopic landuse level. The data used in the study are originally from the previous study by Kim and Song (2000). It is properly cleaned up for the analysis in the study. This study constructs two hypotheses. They are ; 1) vertical functional differentiation of landuse in commercial facilities would exist, 2) vertical functional differentiation of lease rate in commercial facilities would exist. This paper suggests conclusions about type of industry ; 1) which is influenced of accessibility, and more influenced of lease rate, 2) which is only influenced of lease rate, 3) which is only influenced of accessibility. Consideration of horizontal location characteristics and external characteristics incoperated with vertical location characteristics would provide more reliable results and identify inherent relationships between them. It remains for future research.

Intra-Individual, Inter-Vendor Comparison of Diffusion-Weighted MR Imaging of Upper Abdominal Organs at 3.0 Tesla with an Emphasis on the Value of Normalization with the Spleen

송지수,황승배,정경호,진공용 대한영상의학회 2016 Korean Journal of Radiology Vol.17 No.2

Objective: To compare the apparent diffusion coefficient (ADC) values of upper abdominal organs with 2 different 3.0 tesla MR systems and to investigate the usefulness of normalization using the spleen. Materials and Methods: Forty-one patients were enrolled in this prospective study, of which, 35 patients (M:F, 27:8; mean age ± standard deviation, 62.3 ± 12.3 years) were finally analyzed. In addition to the routine liver MR protocol, single-shot spin-echo echo-planar diffusion-weighted imaging using b values of 0, 50, 400, and 800 s/mm2 in 2 different MR systems was performed. ADC values of the liver, spleen, pancreas, kidney and liver lesion (if present) were measured and analyzed. ADC values of the spleen were used for normalization. The Pearson correlation, Spearman correlation, paired sample t test, Wilcoxon signed rank test and Bland-Altman method were used for statistical analysis. Results: For all anatomical regions and liver lesions, both non-normalized and normalized ADC values from 2 different MR systems showed significant correlations (r = 0.5196–0.8488). Non-normalized ADC values of both MR systems differed significantly in all anatomical regions and liver lesions (p < 0.001). However, the normalized ADC of all anatomical regions and liver lesions did not differ significantly (p = 0.065–0.661), with significantly lower coefficient of variance than that of non-normalized ADC (p < 0.009). Conclusion: Normalization of the abdominal ADC values using the spleen as a reference organ reduces differences between different MR systems, and could facilitate consistent use of ADC as an imaging biomarker for multi-center or longitudinal studies.

Nonvariceal Upper Gastrointestinal Bleeding: the Usefulness of Rotational Angiography after Endoscopic Marking with a Metallic Clip

송지수,곽효성,정경호 대한영상의학회 2011 Korean Journal of Radiology Vol.12 No.4

Objective: We wanted to assess the usefulness of rotational angiography after endoscopic marking with a metallic clip in upper gastrointestinal bleeding patients with no extravasation of contrast medium on conventional angiography. Materials and Methods: In 16 patients (mean age, 59.4 years) with acute bleeding ulcers (13 gastric ulcers, 2 duodenal ulcers, 1 malignant ulcer), a metallic clip was placed via gastroscopy and this had been preceded by routine endoscopic treatment. The metallic clip was placed in the fibrous edge of the ulcer adjacent to the bleeding point. All patients had negative results from their angiographic studies. To localize the bleeding focus, rotational angiography and high pressure angiography as close as possible to the clip were used. Results: Of the 16 patients, seven (44%) had positive results after high pressure angiography as close as possible to the clip and they underwent transcatheter arterial embolization (TAE) with microcoils. Nine patients without extravasation of contrast medium underwent TAE with microcoils as close as possible to the clip. The bleeding was stopped initially in all patients after treatment of the feeding artery. Two patients experienced a repeat episode of bleeding two days later. Of the two patients, one had subtle oozing from the ulcer margin and that patient underwent endoscopic treatment. One patient with malignant ulcer died due to disseminated intravascular coagulation one month after embolization. Complete clinical success was achieved in 14 of 16 (88%) patients. Delayed bleeding or major/minor complications were not noted. Conclusion: Rotational angiography after marking with a metallic clip helps to localize accurately the bleeding focus and thus to embolize the vessel correctly. Objective: We wanted to assess the usefulness of rotational angiography after endoscopic marking with a metallic clip in upper gastrointestinal bleeding patients with no extravasation of contrast medium on conventional angiography. Materials and Methods: In 16 patients (mean age, 59.4 years) with acute bleeding ulcers (13 gastric ulcers, 2 duodenal ulcers, 1 malignant ulcer), a metallic clip was placed via gastroscopy and this had been preceded by routine endoscopic treatment. The metallic clip was placed in the fibrous edge of the ulcer adjacent to the bleeding point. All patients had negative results from their angiographic studies. To localize the bleeding focus, rotational angiography and high pressure angiography as close as possible to the clip were used. Results: Of the 16 patients, seven (44%) had positive results after high pressure angiography as close as possible to the clip and they underwent transcatheter arterial embolization (TAE) with microcoils. Nine patients without extravasation of contrast medium underwent TAE with microcoils as close as possible to the clip. The bleeding was stopped initially in all patients after treatment of the feeding artery. Two patients experienced a repeat episode of bleeding two days later. Of the two patients, one had subtle oozing from the ulcer margin and that patient underwent endoscopic treatment. One patient with malignant ulcer died due to disseminated intravascular coagulation one month after embolization. Complete clinical success was achieved in 14 of 16 (88%) patients. Delayed bleeding or major/minor complications were not noted. Conclusion: Rotational angiography after marking with a metallic clip helps to localize accurately the bleeding focus and thus to embolize the vessel correctly.

Multicystic Biliary Hamartoma of the Liver

송지수,문우성,노상재,조백환 대한병리학회 2013 Journal of Pathology and Translational Medicine Vol.47 No.3

Multicystic biliary hamartoma (MCBH) is a very rare hamartomatous cystic nodule of the liver, which has recently been described as a new entity of a hepatic nodular lesion. We report a unique case of MCBH with a review of the literatures. A hepatic multicystic mass of segment 3 was detected in a 52-year-old male by abdominal computed tomography, and resection of this lesion was performed. Macroscopic examination revealed a 2.7×2.0 cm nodular mass with a multicystic honeycomb cut surface. Histologically, this lesion consisted of multiple dilated cystic ducts lined by biliary type epithelial cells, periductal glands and connective tissue, which included small amounts of hepatic parenchyma and blood vessels. Recognition of this unusual lesion is essential to avoid confusion with other cystic tumors of the liver, and to learn more about its natural history and response to treatment.

[알기 쉬운 전공에세이] 같은 원리, 다른 느낌의 UFO슛과 로터세일 ( Rotor Sail)

송지수 대한조선학회 2024 대한조선학회지 Vol.61 No.4

관념적 도피처로서의 산수 자연 표현 연구

송지수 한국기초조형학회 2021 기초조형학연구 Vol.22 No.6

Landscape, vastly used as a subject of art from the traditional landscape painitins to the contemporary art, connotes utopia, refuge and escape in all ages and regions. The objective of this study is to understand the context and aspects od landscape as ideological escape in painting. The research method is looking into the Western and East-Asian perspectives toward nature and their landscape expressions, and studies how Modern and Contemporary Art employs ideological refuge in landscapes. In East Asia, landscape was considered a pursuit of union with nature based on Confucianism, Buddhism, and Taoism, its practice as a path to the absolute liberation and transcendence of onself. They were broadly created and appreciated as ideological landscape. Meanwhile, the landscape painting started later in the West; it was dealt as an independent theme in the 16th century due to the influence of anthropocentrism and religions. in the 18th century, it finally had the meaning as the infinite, ideal, and conceptual nature space by Romanticism. Industrial Revolution and urbanization resulted in desire to reture to nature and oriental influence also contributed to its meaning of solace and escape, and it further established as the symbol of ideological utopian space. Mechanization and drastic changing society and life of 20th century that underwent two world wars intensified escapism. Through the ages of primitivism, expressionism, and surrealism, nature became the space of dream and imagination. The nature as an alternative world for escape continues in the contemporary art. As a conclusions, this determines that psychological escape can be found in any ages and regions, and that the nature expression has developed a firm statues of the ideal imaginary space for escape. 고전 산수화에서부터 현대 예술에 이르기까지 끊임없이 예술의 소재가 되어온 산수 자연은 이상향, 안식처, 도피처 등의 의미로 시간과 공간을 가로지르고 있다. 본 연구의 목적은 회화 영역 안에서 보여온 관념적 도피처로서의 산수 자연 표현들의 맥락과 특성들을 이해하는 데 있다. 그 방법으로 동아시아와 서양의 자연관과 산수 자연 표현의 의미를 알아보고, 현대 미술과 동시대에서 산수 자연의 관념적 도피처로서의 표현을 살펴보았다. 동아시아에서의 산수 자연 표현은 유(濡), 불(佛), 도(道)의 사상적 바탕 위에 자연과 인간의 합일을 추구하였으며, 자연은 자아 해방의 초월을 이룰 수 있는 표현으로 여겨져 왔다. 이는 관념 산수화를 통해 널리 그려지고 애호되었다. 반면 서양의 풍경화는 그보다늦게 시작되었는데, 종교 중심적, 인간 중심적 세계관에 의해 16세기에서야 독립적 주제로 다루어지기 시작하였으며, 18세기에서야 낭만주의 풍경화를 통해 무한한 이상적 관념적 자연 공간으로서의 의미를 지니게 된다. 산업혁명과 도시화의 여파로 도시를 떠나 자연으로 회귀하고자 하는 경향이 나타나며, 동양의 영향으로 위안과 도피의 공간이 되어갔다. 또한 상징주의의 이상적 공간으로서의 상징으로자리를 잡게 된다. 심화된 기계화와 급격한 사회와 삶의 변화, 두 번의 세계대전을 겪게 되는 혼돈의20세기가 되어, 도피 심리는 강화되고 프리미티비즘의 유행으로 표현주의, 초현실주의를 통해 자연산수는 상상의 꿈의 공간이 된다. 이는 도피를 위한 대안 세계로서 동시대 미술에까지 이어지는 모습을 보인다. 이를 통해 어느 시대나 어느 지역에서나 심리적 도피는 이루어졌으며, 산수 자연 표현은그 대상인 이상적 상상 공간으로서의 자리를 공고히 해왔다는 결과를 확인할 수 있다.