Hot Spot Detection of Thermal Infrared Image of Photovoltaic Power Station Based on Multi-Task Fusion

Xu Han,Xianhao Wang,Chong Chen,Gong Li,Chang-hao Piao 한국정보처리학회 2023 Journal of information processing systems Vol.19 No.6

The manual inspection of photovoltaic (PV) panels to meet the requirements of inspection work for large-scalePV power plants is challenging. We present a hot spot detection and positioning method to detect hot spots inbatches and locate their latitudes and longitudes. First, a network based on the YOLOv3 architecture wasutilized to identify hot spots. The innovation is to modify the RU_1 unit in the YOLOv3 model for hot spotdetection in the far field of view and add a neural network residual unit for fusion. In addition, because of themisidentification problem in the infrared images of the solar PV panels, the DeepLab v3+ model was adoptedto segment the PV panels to filter out the misidentification caused by bright spots on the ground. Finally, thelatitude and longitude of the hot spot are calculated according to the geometric positioning method utilizingknown information such as the drone's yaw angle, shooting height, and lens field-of-view. The experimentalresults indicate that the hot spot recognition rate accuracy is above 98%. When keeping the drone 25 m off theground, the hot spot positioning error is at the decimeter level.

A Dual Functional Ti-Ga Alloy: Inhibiting Biofilm Formation and Osteoclastogenesis Differentiation via Disturbing Iron Metabolism

Fupeng Li,Kai Huang,Jinbing Wang,Kai Yuan,Yiqi Yang,Yihao Liu,Xianhao Zhou,Keyu Kong,Tao Yang,Jian He,Chunjie Liu,Haiyong Ao,Fengxiang Liu,Qian Liu,Tingting Tang,Shengbing Yang 한국생체재료학회 2023 생체재료학회지 Vol.27 No.00

Background Although biomedical implants have been widely used in orthopedic treatments, two major clinical challenges remain to be solved, one is the bacterial infection resulting in biofilm formation, and the other is aseptic loosening during implantation due to over-activated osteoclastogenesis. These factors can cause many clinical issues and even lead to implant failure. Thus, it is necessary to endow implants with antibiofilm and aseptic looseningprevention properties, to facilitate the integration between implants and bone tissues for successful implantation. To achieve this goal, this study aimed to develop a biocompatible titanium alloy with antibiofilm and anti-aseptic loosening dual function by utilizing gallium (Ga) as a component. Methods A series of Ti-Ga alloys were prepared. We examined the Ga content, Ga distribution, hardness, tensile strength, biocompatibility, and anti-biofilm performance in vitro and in vivo. We also explored how Ga3+ ions inhibited the biofilm formation of Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) and osteoclast differentiation. Results The alloy exhibited outstanding antibiofilm properties against both S. aureus and E. coli in vitro and decent antibiofilm performance against S. aureus in vivo. The proteomics results demonstrated that Ga3+ ions could disturb the bacterial Fe metabolism of both S. aureus and E. coli, inhibiting bacterial biofilm formation. In addition, Ti-Ga alloys could inhibit receptor activator of nuclear factor-κB ligand (RANKL)-dependent osteoclast differentiation and function by targeting iron metabolism, then suppressing the activation of the NF-κB signaling pathway, thus, showing their potential to prevent aseptic loosening. Conclusion This study provides an advanced Ti-Ga alloy that can be used as a promising orthopedic implant raw material for various clinical scenarios. This work also revealed that iron metabolism is the common target of Ga3+ ions to inhibit biofilm formation and osteoclast differentiation.

중국 통합교육 발전을 위한 교사들의 요구와 인식

박찬웅 ( Park Chan Woong ),박정식 ( Park Jung-sik ),( Wang Xianhao ) 대구대학교 한국특수교육문제연구소 2021 특수교육저널 : 이론과 실천 Vol.22 No.1

[목적] 이 연구의 목적은 중국의 특수교사 및 일반교사의 통합교육 관련 지원에 대한 요구와 인식을 분석함으로써 중국 통합교육의 발전 방안을 제시하는데 있다. [방법] 연구의 목적을 성취하기 위해 중국에 소재한 통합교육 교사, 일반교사, 특수교사를 연구대상으로 선정하여 전자메일을 통해 설문조사를 실시하였다. 조사된 자료는 SPSS Win 21.0 버전을 사용하여 연구목적에 따라 평균 및 표준편차, t검증을 실시하였다. [결과] 첫째, 인적 요인에서, 교사들은 중국의 통합교육에서 일반학교 차원의 교사자질 향상을 위한 통합교육 연구를 실시하는 것에 높은 요구를 보였고, 둘째, 환경적 요인에서, 교사들은 통합교육과 관련하여 장애인용 각종 교구, 각종 학습보조기기 지원에 대한 계획 및 운영에 가장 높은 요구를 보였고, 셋째, 행·재정적 요인에서, 교사들은 교육청 차원에서의 가족지원의 계획 및 운영이 가장 필요하고, 일반학교 차원의 통합교육 장학 계획 및 운영, 교육청 차원의 통합교육 지원 사이트 구축 순으로 인식하고 있었고, 넷째, 사회·문화적 요인에서, 교사들은 일반학교 차원에서 일반학생 부모 대상의 통합교육 관련 부모교육 실시해야 한다는 것과 통합교육에 대한 교사의 실천의지의 필요성, 일반학교 차원에서 장애학생 부모를 대상으로 한 통합교육 관련 부모교육 실시가 필요하다는 순으로 인식하고 있다. [결론] 중국의 통합교육을 위해 보다 많은 장려정책을 통해 특수교육 교사의 양성에 노력을 기울여야 하고 통합교육과 관련한 정책이나 법률적인 보장제도와 교사의 연수 등을 마련해야 할 것이다. 또한 통합교육에 대한 본질적인 이해도를 높여야 할 것으로 여겨진다. [Purpose] The purpose of this study is to present a plan for the development of inclusive education in China by analyzing the needs and perceptions of support for inclusive education in China. [Method] To achieve the purpose of the study, inclusive education teachers, general teachers, and special teachers located in China were selected as subjects for the study, and a survey was conducted via e-mail. [Results] First, in terms of human factors, teachers had a strong desire for research on inclusive education to be conducted in order to improve the quality of teaching at the general school level. Second, in terms of environmental factors, teachers were intent on planning and using various educational tools when teaching the disabled. Third, in terms of administrative and financial factors, teachers understood the need for planning and family support at the education office level. Fourth, in terms of social and cultural factors, teachers were highly regarded as regular students at the general school level. It is highly recognized that parental education related to inclusive education for parents should be conducted. [Conclusion] The findings support efforts to train special education teachers through incentive policies and the preparation of policies relating to inclusive education, a system of legal guarantees, and teacher training. In addition, it is thought that a deeper understanding of inclusive education should be encouraged.

Comparative analysis of metabolites and in vitro hypoglycemic activity of Taiwanofungus camphoratus cultured using various methods

Ming YongFei,Li Yin,Chu JianZhi,Zhou XiaoShuang,Huang YuXuan,Yang ShuDe,Mu YueJun,Wang Lin,Zhang Rui,Cheng XianHao 한국응용생명화학회 2024 Applied Biological Chemistry (Appl Biol Chem) Vol.67 No.-

Taiwanofungus camphoratus has attracted much attention because it can abundantly produce various active substances that exhibit blood-sugar lowering, immunity improving, and antioxidant properties. Currently, T. camphoratus is cultured using four main methods: cutting wood culture, solid-state fermentation, submerged fermentation, and dish culture. T. camphoratus produces different metabolites under different culture methods. In this study, nontargeted metabolomics was used to compare the metabolites of T. camphoratus produced under these four culture methods. Principal component analysis and supervised partial least squares-discriminant analysis were used to analyze the differences in the metabolites. Moreover, in vitro hypoglycemic activity of T. camphoratus extracts produced under four culture methods was compared by assessing their ability to inhibit the activity of α-glucosidase, α-amylase, and sucrase. A total of 186 metabolites were identified. In total, 127 metabolites were common under the four culture methods. Under solid-state fermentation, submerged fermentation, and cutting wood culture, 12, 1, and 4 metabolites were unique, respectively. The differential metabolites produced by T. camphoratus under four culture methods were mainly triterpenoids, phenolic compounds, and fatty acid compounds. α-glucosidase, α-amylase, and sucrase activity inhibition was the best using T. camphoratus extract obtained under cutting wood culture; the inhibition rates were 55.97%, 51.96%, and 78.02%, respectively, which were comparable to those exhibited by 0.001, 3, and 12 mg/mL acarbose (positive control). The metabolites produced by T. camphoratus and α-glucosidase, α-amylase, and sucrase inhibitory activities were different under the four culture methods. Cutting wood culture exhibited the best enzyme inhibitory activity. This study provided a theoretical basis for further use and development of various culture methods for the rational production of active metabolites of T. camphoratus . Taiwanofungus camphoratus has attracted much attention because it can abundantly produce various active substances that exhibit blood-sugar lowering, immunity improving, and antioxidant properties. Currently, T. camphoratus is cultured using four main methods: cutting wood culture, solid-state fermentation, submerged fermentation, and dish culture. T. camphoratus produces different metabolites under different culture methods. In this study, nontargeted metabolomics was used to compare the metabolites of T. camphoratus produced under these four culture methods. Principal component analysis and supervised partial least squares-discriminant analysis were used to analyze the differences in the metabolites. Moreover, in vitro hypoglycemic activity of T. camphoratus extracts produced under four culture methods was compared by assessing their ability to inhibit the activity of α-glucosidase, α-amylase, and sucrase. A total of 186 metabolites were identified. In total, 127 metabolites were common under the four culture methods. Under solid-state fermentation, submerged fermentation, and cutting wood culture, 12, 1, and 4 metabolites were unique, respectively. The differential metabolites produced by T. camphoratus under four culture methods were mainly triterpenoids, phenolic compounds, and fatty acid compounds. α-glucosidase, α-amylase, and sucrase activity inhibition was the best using T. camphoratus extract obtained under cutting wood culture; the inhibition rates were 55.97%, 51.96%, and 78.02%, respectively, which were comparable to those exhibited by 0.001, 3, and 12 mg/mL acarbose (positive control). The metabolites produced by T. camphoratus and α-glucosidase, α-amylase, and sucrase inhibitory activities were different under the four culture methods. Cutting wood culture exhibited the best enzyme inhibitory activity. This study provided a theoretical basis for further use and development of various culture methods for the rational production of active metabolites of T. camphoratus.