Insomnia, Anxiety, and Depression in Patients First Diagnosed With Female Cancer

Dham Ho,Sun-Young Kim,Soo In Kim,Sung-Youn Kim,Weon-Jeong Lim 대한신경정신의학회 2021 PSYCHIATRY INVESTIGATION Vol.18 No.8

Objective This study evaluated whether insomnia, anxiety, and depression differ by type of gynecological or breast cancer. Methods From September 7, 2011, to July 14, 2015, this study included 232 patients who were diagnosed with gynecological or breast cancer for the first time. The severity of insomnia, anxiety, and depression was measured with the National Cancer Center Psychological Symptom inventory (NCC-PSI), a self-reported scale, at the first outpatient visit after surgery. Multivariate logistic regression analyses were used to identify which diagnosis was associated with significant symptom levels. Results Patients with ovarian cancer and breast cancer reported more severe insomnia and problems with daily life compared with cervical cancer patients. Anxiety symptoms were more distressing among breast cancer patients than cervical cancer patients, and the degree of interference in daily life was severe. Finally, compared to those with cervical cancer, ovarian cancer and breast cancer patients reported more severe depression, and their daily life was disrupted more often than reported by cervical cancer patients. Conclusion Many female cancer patients are suffering distress but are not looking for specialized care. Psychiatric approach in the early stages of cancer diagnosis is needed and will require overcoming the stigmas of mental illness and cancer.

An Automatic Face Hiding System based on the Deep Learning Technology

Hyeon-Dham Yoon,Seong-Yong Ohm 국제문화기술진흥원 2019 International Journal of Advanced Culture Technolo Vol.7 No.4

As social network service platforms grow and one-person media market expands, people upload their own photos and/or videos through multiple open platforms. However, it can be illegal to upload the digital contents containing the faces of others on the public sites without their permission. Therefore, many people are spending much time and effort in editing such digital contents so that the faces of others should not be exposed to the public. In this paper, we propose an automatic face hiding system called ‘autoblur’, which detects all the unregistered faces and mosaic them automatically. The system has been implemented using the GitHub MIT open-source ‘Face Recognition’ which is based on deep learning technology. In this system, two dozens of face images of the user are taken from different angles to register his/her own face. Once the face of the user is learned and registered, the system detects all the other faces for the given photo or video and then blurs them out. Our experiments show that it produces quick and correct results for the sample photos.

An Automatic Face Hiding System based on the Deep Learning Technology

Yoon, Hyeon-Dham,Ohm, Seong-Yong The International Promotion Agency of Culture Tech 2019 International Journal of Advanced Culture Technolo Vol.7 No.4

As social network service platforms grow and one-person media market expands, people upload their own photos and/or videos through multiple open platforms. However, it can be illegal to upload the digital contents containing the faces of others on the public sites without their permission. Therefore, many people are spending much time and effort in editing such digital contents so that the faces of others should not be exposed to the public. In this paper, we propose an automatic face hiding system called 'autoblur', which detects all the unregistered faces and mosaic them automatically. The system has been implemented using the GitHub MIT open-source 'Face Recognition' which is based on deep learning technology. In this system, two dozens of face images of the user are taken from different angles to register his/her own face. Once the face of the user is learned and registered, the system detects all the other faces for the given photo or video and then blurs them out. Our experiments show that it produces quick and correct results for the sample photos.

Automatic Pancreas Segmentation Based on Cascaded Network Considering Pancreatic Uncertainty in Abdominal CT Images

윤현담(Hyeon Dham Yoon),김현진(Hyeonjin Kim),홍헬렌(Helen Hong) Korean Institute of Information Scientists and Eng 2021 정보과학회논문지 Vol.48 No.5

Creep modeling in functionally graded rotating disc of variable thickness

D. Deepak,V. K. Gupta,A. K. Dham 대한기계학회 2010 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.24 No.11

Creep behavior of rotating discs made of functionally graded materials with linearly varying thickness has been investigated. The discs under investigation are made of composite containing silicon carbide particles in a matrix of pure aluminum. The creep behavior of the composite has been described by threshold stress based creep law by assuming a stress exponent of 5. The effect of imposing linear particle gradient on the distribution of stresses and strain rates in the composite disc has been investigated. The study indicates that with increase in particle gradient in the disc, the radial stress increases throughout the disc, whereas the tangential and effective stresses increase near the inner radius but decrease near the outer radius. The steady state strain rates in the composite disc, having gradient in the distribution of reinforcement, are significantly lower than that observed in a disc having uniform distribution of reinforcement.

Mechanical Properties of Unidirectional Carbon-carbon Composites as a Function of Fiber Volume Content

Dhakate, S.R.,Mathur, R.B.,Dham, T.L. Korean Carbon Society 2002 Carbon Letters Vol.3 No.3

Unidirectional polymer composites were prepared using high-strength carbon fibers as reinforcement and phenolic resin as matrix precursor with keeping fiber volume fraction at 30, 40, 50 and 60% respectively. These composites were carbonized at $1000^{\circ}C$ and graphitised at $2600^{\circ}C$ in the inert atmosphere. The carbonized and graphitised composites were characterized for mechanical properties as well as microstructure. Microscopic studies were carried out of the polished surface of carbonized and graphitised composites after etching by chromic acid, to understand the effect of fiber volume fraction on oxidation at fiber-matrix interface. It is found that the flexural strength in polymer composites increases with fiber volume fraction and so does for the carbonised composites. However, the trend was found to be reversed in graphitised composites. In all the carbonized composites anisotropic region has been observed at fiber-matrix interface which transforms into columnar type microstructure upon graphitisation. The extension of strong and weak columnar type microstructure is function of fiber volume fraction. SEM microscopy of the etched surface of the sample reveal that composites containing 40% fiber volume has minimum oxidation at the interface, revealing a strong interfacial bonding.

Mechanical Properties of Unidirectional Carbon-carbon Composites as a Function of Fiber Volume Content

S.R. Dhakate,R.B. Mathur,T.L. Dham 한국탄소학회 2002 Carbon Letters Vol.3 No.3

Unidirectional polymer composites were prepared using high-strength carbon fibers as reinforcement and phenolic resin as matrix precursor with keeping fiber volume fraction at 30, 40, 50 and 60% respectively. These composites were carbonized at 1000℃ and graphitised at 2600℃ in the inert atmosphere. The carbonized and graphitised composites were characterized for mechanical properties as well as microstructure. Microscopic studies were carried out of the polished surface of carbonized and graphitised composites after etching by chromic acid, to understand the effect of fiber volume fraction on oxidation at fiber-matrix interface. It is found that the flexural strength in polymer composites increases with fiber volume fraction and so does for the carbonised composites. However, the trend was found to be reversed in graphitised composites. In all the carbonized composites anisotropic region has been observed at fiber-matrix interface which transforms into columnar type microstructure upon graphitisation. The extension of strong and weak columnar type microstructure is function of fiber volume fraction. SEM microscopy of the etched surface of the sample reveal that composites containing 40% fiber volume has minimum oxidation at the interface, revealing a strong interfacial bonding.

Vertically aligned cyclo-phenylalanine peptide nanowire-based high-performance triboelectric energy generator

Park, In Woo,Choi, Jinhyeok,Kim, Kyu Young,Jeong, Junseok,Gwak, Dham,Lee, Yonghun,Ahn, Yong Hoe,Choi, Young Jin,Hong, Young Joon,Chung, Woo-Jae,Lee, Minbaek,Heo, Kwang Elsevier 2019 Nano energy Vol.57 No.-

<P><B>Abstract</B></P> <P>Biocompatible materials are expected to play important roles in biomedical applications. In particular, dipeptide nanostructures have attracted considerable attention because of their biocompatibility, functional molecular recognition, and unique biological and electronic properties. Nevertheless, a lack of mass production and facile fabrication of the stable peptide nanostructure array is one of the major hurdles holding back the practical applications. This study developed a simple and wafer-scale process to produce a cyclo-diphenylalanine (Cyclo-FF) nanowire array via a thermal evaporation process and fabricated Cyclo-FF-based triboelectric energy generators (TEG) with high performance. This approach allowed control of the dimensions of the Cyclo-FF nanowires and the preparation of stable peptide nanostructures under ambient conditions and moisture. The Cyclo-FF nanowires were employed as triboelectric materials for biocompatible nanogenerators, which exhibited high-performance power outputs for future applications. The voltage and current output reached ~ 350 V and ~ 10 μA, respectively, with a surface treatment, which was sufficient to light up over a hundred LEDs. Even after dipping Cyclo-FF nanowires in water or TBS buffer solution, it still worked as a TEG material with minor degradation. This method is compatible for the synthesis of bionanomaterials over a large area, and thus can be a powerful strategy to fabricate high-performance biocompatible energy devices for a range of practical applications in the future.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The large-scale synthesis of vertically aligned Cyclo-FF NWs are presented. </LI> <LI> Cyclo-FF NWs are stable under high humidity even in TBS buffer. </LI> <LI> A triboelectric generator based on Cyclo-FF NWs reached the power density of ~73.7 mW/m<SUP>2</SUP>. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>