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Feature deformation network with multi-range feature enhancement for agricultural machinery operation mode identification

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International Journal of Agricultural and Biological Engineering 2024年第4期17卷 265-275页

作者： Weixin Zhai Zhi Xu Jinming Liu Xiya Xiong Jiawen Pan sun-ok chung Dionysis Bochtis Caicong Wu College of Information and Electrical Engineering China Agricultural UniversityBeijing 100083China Key Laboratory of Agricultural Machinery Monitoring and Big Data Application Ministry of Agriculture and Rural AffairsBeijing 100083China Department of Smart Agricultural Systems Graduate SchoolChungnam National UniversityDaejeon 34134Republic of Korea Institute for Bio-Economy and Agri-Technology(iBO) Centre for Research and Technology-Hellas(CERTH)Thessaloniki 57001Greece

Utilizing the spatiotemporal features contained in extensive trajectory data for identifying operation modes of agricultural machinery is an important basis task for subsequent agricultural machinery trajectory *** the present study,to effectively identify agricultural machinery operation mode,a feature deformation network with multi-range feature enhancement was ***,a multi-range feature enhancement module was developed to fully explore the feature distribution of agricultural machinery trajectory ***,to further enrich the representation of trajectories,a feature deformation module was proposed that can map trajectory points to high-dimensional space to form feature ***,EfficientNet-B0 was used to extract features of different scales and depths from the feature map,select features highly relevant to the results,and finally accurately predict the mode of each trajectory *** validate the effectiveness of the proposed method,experiments were conducted to compare the results with those of other methods on a dataset of real agricultural *** the corn and wheat harvester trajectory datasets,the model achieved accuracies of 96.88%and 96.68%,as well as F1 scores of 93.54%and 94.19%,exhibiting improvements of 8.35%and 9.08%in accuracy and 20.99%and 20.04%in F1 score compared with the current state-of-the-art method.

关键词： road-field trajectory classification efficientNet feature deformation network multi-range feature enhancement agricultural machinery operation mode recognition

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Measurement and evaluation of whole body vibration of agricultural tractor operator

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International Journal of Agricultural and Biological Engineering 2017年第1期10卷 248-255页

作者： Md.Shaha Nur Kabir sun-ok chung Yong-Joo Kim Nam-Seok sung Soon-Jung Hong Department of Biosystems Machinery Engineering Chungnam National UniversityDaejeon 34134Korea Department of Agricultural and Industrial Engineering Hajee Mohammad Danesh Science and Technology UniversityDinajpur 5200Bangladesh Rural Human Development Center Rural Development AdministrationJeonju 54875Korea

Exposure of whole body vibration(WBV)influences performance,comfort,and long term health risks of tractor ***,measurement and evaluation of WBV parameters should be carried out to find probable effects on the health of tractor *** this study,a system was designed to measure the WBV of agricultural tractor operators and evaluated the hazard risks on operator’s body according to the ISO standards,and implementation of the WBV test in the official testing station was also suggested.A tri-axial accelerometer was employed to measure vibrations transmitted to the seated operator body as a whole through the supporting surface of the buttock on four typical farm roads under different *** vector sum A(8)exposures on the rough tracks(earthen and grassland roads)exceeded the action limits of 0.5 m/s2 at a 10.9 km/h forward speed and reached to the action limit value at a 16.0 km/h forward speed on the concrete *** vector sum of VDV(8)exposures did not exceed the action limits of 9.1 m/s1.75 and was greater on the grassland *** vector sum Sed(8)exposures values exceeded the moderate probability of an adverse health limit of 0.5 MPa on all farm roads at high forward speeds and exceeded the high probability of an adverse health limit of 0.8 MPa on asphalt,concrete,and grassland roads which should be lower than the exposure limit values as suggested by the ISO and EC *** WBV evaluation procedure should be considered for implementation at the official tractor test station,which would response to domestic and international tractor test regulations and improve the market competitiveness.

关键词： agricultural tractor whole body vibration tractor operator driving safety ride comfort test standard health risk

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Grain flow rate sensing for a 55 kW full-feed type multi-purpose combine

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International Journal of Agricultural and Biological Engineering 2018年第5期11卷 206-210页

作者： Moon-Chan Choi Kyu-Ho Lee Bo-Eun Jang Yong-Joo Kim sun-ok chung Jong-Soon Lee Su-Kyeong Kim Department of Biosystems Machinery Engineering Chungnam National UniversityDaejeon34134Korea R&D Center Daedong Industrial Co.LtdChangyeongKorea R&D Center TongYang Co.LtdGongjuKorea

Real time sensing of crop yield is critical for a successful implementation of precision *** monitoring system is an optional component of a 55 kW multi-purpose combine harvester,developed in Korea,for both domestic and global markets,especially Asian countries where field sizes are relatively *** aim of the present study was to fabricate and evaluate the performance of a grain flow sensor suitable to the mid-sized full-feed type combine for rice,soybean,and ***,commercially available non-contact type sensing modules(optical,ultrasonic,laser,and microwave modules)were chosen for alternative candidates,to be further tested in a laboratory *** the laboratory tests,the ultrasonic module was selected as a potential approach and the performance was improved by increasing the number of modules and their ***,the improved grain flow sensor was evaluated during field harvesting *** tests with the improved grain flow sensor showed a good potential for rice(R^(2)=0.85,RMSE=126.14 g/s),soybean(R^(2)=0.78,RMSE=43.87 g/s),and barley(R^(2)=0.83,RMSE=37.39 g/s).Further research would be necessary for improvement and commercialization,through various signal processing and field tests under different field and crop conditions.

关键词： precision agriculture combine harvester yield monitoring system sensor grain flow rate

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A Framework for Enhancing Privacy and Anonymity in Blockchain-Enabled IoT Devices

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Computers, Materials & Continua 2024年第3期78卷 4263-4282页

作者： Muhammad Saad Muhammad Raheel Bhutta Jongik Kim Tae-sun chung Department of Artificial Intelligence Ajou UniversitySuwon443-749Korea Department of Electrical and Computer Engineering University of Utah Asia CampusIncheon21985Korea Department of Artificial Intelligence Chungnam National UniversityDaejeon34134Korea

With the increase in IoT(Internet of Things)devices comes an inherent challenge of *** the world today,privacy is the prime concern of every *** one’s privacy and keeping anonymity throughout the system is a desired functionality that does not come without inevitable trade-offs like scalability and increased complexity and is always exceedingly difficult to *** challenge is keeping confidentiality and continuing to make the person innominate throughout the *** address this,we present our proposed architecture where we manage IoT devices using blockchain *** proposed architecture works on and off blockchain integrated with the closed-circuit television(CCTV)security camera fixed at the rental *** this framework,the CCTV security camera feed is redirected towards the owner and renter based on the smart contract *** entity(owner or renter)can see the CCTV security camera feed at one *** is no third-party dependence except for the CCTV security camera deployment *** contributions include the proposition of framework architecture,a novel smart contract algorithm,and the modification to the ring signatures leveraging an existing cryptographic *** are made based on different systems’security and key management *** an empirical study,our proposed algorithm performed better in key generation,proof generation,and verification *** comparing similar existing schemes,we have shown the proposed architectures’*** now,we have developed this system for a specific area in the real ***,this system is scalable and applicable to other areas like healthcare monitoring systems,which is part of our future work.

关键词： Privacy anonymity blockchain IoT smart contracts

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Empirical Relationships between Prismatic Soil Strength Index and Cone Index

Empirical Relationships between Prismatic Soil Strength Inde...

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国际农业工程大会

作者： sun-ok chung Kenneth A. Sudduth John W. Hummel Newell R. Kitchen Peter P. Motavalli Agricultural Engineering Researcher National Institute of Agricultural Engineering Rural Development Administration Suwon Republic of Korea Cropping Systems and Water Quality Research USDA-ARS Columbia MO USA Cropping Systems and Water Quality Research USDA-ARS Columbia MO USA Cropping Systems and Water Quality Research USDA-ARS Columbia MO USA Assistant Professor Soil Environmental ＆ Atmospheric Sciences Dept. Univ. of Missouri Columbia MO

＜正＞ Georeferenced measurements of soil strength can provide information useful for site-specific management. Because the conventional instrument for obtaining such measurements （i.e., cone penetrometer） provides only point data, we developed a horizontally operating on-the-go soil strength profile sensor （SSPS） that provides measurements at five depths up to 50 cm.

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DESIGN OF A REMOTE CONTROL SYSTEM FOR PROTECTED CHRYSANTHEMUM PRODUCTION

DESIGN OF A REMOTE CONTROL SYSTEM FOR PROTECTED CHRYSANTHEMU...

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亚洲精细农业与计算机农业应用联合大会

作者： Won-Jun Shin Ki-Dae Kim Yun-Kun Huh Young-Chang Chang Hyun-Kwon Noh Jong-Pill Han sun-ok chung chungnam National University Daejeon Republic of Korea Konkuk University Chungjoo Republic of Korea chungbuk National University Chungju Republic of Korea

Chrysanthemum is one of the major flowers and the production area in Korea was 736 ha as of 2007. Temperature, humidity, light, water, and nutrient are critical factors affecting yield and quality of chrysanthemum. Since monitoring and control of these factors are critical, producers are tended to stay around and visit frequently the production area. To solve these problems and relieve the labor, remote monitoring and control of these environmental and operational factors would be a preferable option. In this paper, a remote control system for protected chrysanthemum production was designed so that producer could operate control modules and confirm the results. First, important environmental and operational factors were selected and control ranges of these variables were determined. Then, control modules of the selected variables were constructed and the performances were evaluated. Results of this work would be useful for construction and utilization of the final remote control system.

关键词： Chrysanthemum Environment control Remote control

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Astrocytic endothelin-1 overexpression impairs learning and memory ability in ischemic stroke via altered hippocampal neurogenesis and lipid metabolism

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Neural Regeneration Research 2024年第3期19卷 650-656页

作者： Jie Li Wen Jiang Yuefang Cai Zhenqiu Ning Yingying Zhou Chengyi Wang Sookja Ki chung Yan Huang Jingbo sun Minzhen Deng Lihua Zhou Xiao Cheng Guangzhou University of Traditional Chinese Medicine GuangzhouGuangdong ProvinceChina State Key Laboratory of Dampness Syndrome of Chinese Medicine The Second Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhouGuangdong ProvinceChina Guangdong Provincial Key Laboratory of Research on Emergency in TCM GuangzhouGuangdong ProvinceChina Department of Anesthesiology West China HospitalSichuan UniversityChengduSichuan ProvinceChina Department of Anatomy Sun Yat-Sen School of MedicineSun Yat-Sen UniversityShenzhenGuangdong ProvinceChina Faculty of Medicine Macao University of Science and TechnologyMacao Special Administration RegionChina

Vascular etiology is the second most prevalent cause of cognitive impairment ***-1,which is produced and secreted by endothelial cells and astrocytes,is implicated in the pathogenesis of ***,the way in which changes in astrocytic endothelin-1 lead to poststroke cognitive deficits following transient middle cerebral artery occlusion is not well ***,using mice in which astrocytic endothelin-1 was overexpressed,we found that the selective overexpression of endothelin-1 by astrocytic cells led to ischemic stroke-related dementia(1 hour of ischemia;7 days,28 days,or 3 months of reperfusion).We also revealed that astrocytic endothelin-1 overexpression contributed to the role of neural stem cell proliferation but impaired neurogenesis in the dentate gyrus of the hippocampus after middle cerebral artery *** proteome profiles and western blot analysis confirmed that levels of glial fibrillary acidic protein and peroxiredoxin 6,which were differentially expressed in the brain,were significantly increased in mice with astrocytic endothelin-1 overexpression in comparison with wild-type mice 28 days after ischemic ***,the levels of the enriched differentially expressed proteins were closely related to lipid metabolism,as indicated by Kyoto Encyclopedia of Genes and Genomes pathway *** chromatography-mass spectrometry nontargeted metabolite profiling of brain tissues showed that astrocytic endothelin-1 overexpression altered lipid metabolism products such as glycerol phosphatidylcholine,sphingomyelin,and phosphatidic ***,this study demonstrates that astrocytic endothelin-1 overexpression can impair hippocampal neurogenesis and that it is correlated with lipid metabolism in poststroke cognitive dysfunction.

关键词： astrocytic endothelin-1 dentate gyrus differentially expressed proteins hippocampus ischemic stroke learning and memory deficits lipid metabolism neural stem cells neurogenesis proliferation

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韩国农机化的进程与水稻加工中心的作用

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农机科技推广 2010年第12期 17-17页

作者： sun-ok chung 韩国忠南国立大学

韩国的人口总数由1970年的约3200万增加至2008年的近4900万，与此同时农业人口却由约1442万降至319万。不仅如此，韩国的农业人口中老龄化问题日益突出。现在在韩国的乡村，60多岁的老人都自称“年轻人”。

关键词：韩国加工中心农机化水稻进程农业人口老龄化年轻人

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Validity of fatty liver prediction scores for diagnosis of fatty liver by Fibroscan

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Hepatobiliary & Pancreatic Diseases International 2024年第4期23卷 353-360页

作者： Seogsong Jeong sun Jae Park Seong Kyun Na Sang Min Park Byung-Cheol Song Yun Hwan Oh Department of Biomedical Sciences Seoul National University Graduate SchoolSeoul 03080Korea Department of Biomedical Informatics CHA University School of MedicineCHA UniversitySeongnam 13488Korea Department of Internal Medicine Inje University College of MedicineSeoul 50834Korea Department of Family Medicine Seoul National University HospitalSeoul National University College of MedicineSeoul 03080Korea Department of Internal Medicine Jeju National University HospitalJeju National University College of MedicineJeju 63241Korea Department of Family Medicine Jeju National University HospitalJeju National University College of MedicineJeju 63241Korea Department of Family Medicine Chung-Ang University Gwangmyeong HospitalChung-Ang University College of MedicineGwangmyeong 14353Korea

Background:The Korea National Health and Nutrition Examination Survey nonalcoholic fatty liver disease(K-NAFLD)score was recently developed with the intent to operationally define nonalcoholic fatty liver disease(NAFLD).However,there remained an external validation that confirmed its diagnostic performance,especially in patients with alcohol consumption or hepatitis virus ***:Diagnostic accuracy of the K-NAFLD score was evaluated in a hospital-based cohort consisting of 1388 participants who received Fibroscan®.Multivariate-adjusted logistic regression models and the contrast estimation of receiver operating characteristic curves were used for validation of the K-NAFLD score,fatty liver index(FLI),and hepatic steatosis index(HSI).Results:K-NAFLD-moderate[adjusted odds ratio(aOR)=2.53,95%confidence interval(CI):1.13-5.65]and K-NAFLD-high(aOR=4.14,95%CI:1.69-10.13)groups showed higher risks of fatty liver compared to the K-NAFLD-low group after adjustments for demographic and clinical characteristics,and FLI-moderate and FLI-high groups revealed aORs of 2.05(95%CI:1.22-3.43)and 1.51(95%CI:0.78-2.90),*** addition,the HSI was less predictive for Fibroscan®-defined fatty *** K-NAFLD and FLI also demonstrated high accuracy in the prediction of fatty liver in patients with alcohol consumption and chronic hepatitis virus infection,and the adjusted area under curve values were comparable between K-NAFLD and ***:Externally validation of the K-NAFLD and FLI showed that these scores may be a useful,noninvasive,and non-imaging modality for the identification of fatty *** addition,these scores also predicted fatty liver in patients with alcohol consumption and chronic hepatitis virus infection.

关键词： Nonalcoholic fatty liver disease Fatty liver index Hepatic steatosis index

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壮通饮通过Nrf2-SCL7A11/xCT-Gpx4通路调控铁死亡改善脑缺血再灌注损伤

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中山大学学报（医学科学版） 2024年第4期45卷 539-548页

作者：王成毅蔡粤芳宁振求邓敏贞孙景波 Sookja Kim chung 李岩程骁广州中医药大学第二临床医学院广东广州510006 深圳市人民医院、南方科技大学第一附属医院、暨南大学第二临床医学院广东深圳518020 省部共建中医湿证国家重点实验室广东广州510120 广东省中医急症研究重点实验室广东广州510120 澳门科技大学医学院中国澳门999078 广西国际壮医医院广西南宁530201

【目的】探究壮通饮通过Nrf2-SCL7A11/xCT-Gpx4通路调控铁死亡对大脑中动脉栓塞模型小鼠脑缺血再灌注损伤的保护作用及其机制。【方法】将C57BL/6J小鼠随机分为假手术组(Sham)、模型组(MCAO)、低剂量壮通饮组(ZTY-L+MCAO),高剂量壮通饮... 详细信息

【目的】探究壮通饮通过Nrf2-SCL7A11/xCT-Gpx4通路调控铁死亡对大脑中动脉栓塞模型小鼠脑缺血再灌注损伤的保护作用及其机制。【方法】将C57BL/6J小鼠随机分为假手术组(Sham)、模型组(MCAO)、低剂量壮通饮组(ZTY-L+MCAO),高剂量壮通饮组(ZTY-H+MCAO),每组5只。其中MCAO组采用硅胶线栓法进行造模,小鼠大脑中动脉栓塞1h,拔出线栓再灌注72h后进行心脏灌注取脑,Sham组除了不插入线栓其余操作同MCAO组。采用Zea-Longa法对小鼠神经功能进行评分;采用TTC染色评估小鼠脑梗死体积;采用HE染色、尼氏染色评估脑损伤程度;采用普鲁士蓝染色评价三价铁离子蓄积水平;qPCR检测铁离子转运相关载体受体TfR1和DMT1、脂质过氧化相关基因ACSL4以及铁死亡标志物PTGS2 mRNA表达;ELISA试剂盒检测4-HNE的含量评估小鼠大脑脂质过氧化水平;Western-blot、免疫荧光检测小鼠脑组织中Nrf2、SCL7A11/xCT、Gpx4蛋白水平。【结果】①壮通饮改善了MCAO/R后小鼠神经功能(P<0.05)和大脑梗死体积(P<0.05)及缓解MCAO/R后大脑皮层细胞病理损伤。②壮通饮减弱了MCAO/R后小鼠大脑组织的三价铁离子蓄积状态;减少MCAO/R后小鼠大脑中与铁离子转运入细胞内相关载体TfR1和DMT1 mRNA的表达(P<0.001);下调MCAO/R后小鼠大脑脂质过氧化物4-HNE含量和组织脂质过氧化物酶ACSL4 mRNA表达(P<0.001);降低MCAO/R后小鼠大脑铁死亡标志物PTGS2 mRNA表达(P<0.001)。③壮通饮增加MCAO/R后Nrf2入核表达(P<0.001),以及增加xCT和Gpx4在神经元中的表达(P<0.001)。【结论】壮通饮能够改善MCAO/R小鼠神经功能和脑梗死体积,缓解大脑皮层细胞病理损伤,影响Nrf2-SCL7A11/xCT-Gpx4通路关键信号分子表达,所以壮通饮改善小鼠MCAO/R损伤的作用机制可能是通过Nrf2-SCL7A11/xCT-Gpx4通路调节铁死亡水平达到的。

关键词：缺血性脑卒中铁死亡壮通饮 Nrf2-SCL7A11/xCT-Gpx4通路机制研究

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