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Assessment of freely available CartoDEM V1 and V1.1R1 with respect to high resolution aerial photogrammetric DEM in high mountains (vol 31, pg 943, 2016)

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GEOCARTO INTERNATIONAL 2016年第9期31卷 943-955页

作者： Singh, Mritunjay Kumar Gupta, R. D. Snehmani Kumar, Satish Ganju, Ashwagosha [a] Snow & Avalanche Study Establishment-Research and Development Center (SASE-RDC) Chandigarh India[b] Geographic Information System Cell (GIS Cell) Motilal Nehru National Institute of Technology (MNNIT) Allahabad India

The accuracy of DEMs shows wide variations from one terrain to another and it needs to be determined. This study evaluates NRSC (National Remote Sensing Centre, Hyderabad, India) CartoDEM V1 and V1.1R1 with respect to resampled ADS80 DEM for parts of the Himalayas. Both the test DEMs were properly registered with reference to resampled ADS80 DEM and then individually subtracted to get the difference DEMs. Visual and statistical analyses were performed to assess the quality of the tested DEMs in terms of visible terrain and vertical accuracy. For calculating the accuracies in different terrain classes, slope and aspect maps were generated from the ADS80 DEM. Properly registered Landsat5 TM data were used for the development of the land cover map with four classes. The overall vertical accuracy measured for CartoDEM V1 was 269.9?m (LE90), while CartoDEM V1.1R1 showed huge improvement in the accuracy with 68.5?m (LE90).

关键词： Digital Elevation Model (DEM) ADS80 Cartosat-1 CartoDEM Photogrammetry vertical accuracy LE90 Himalaya Manali

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A nonlinear model-based control system for distillation columns using rigorous simulator

A nonlinear model-based control system for distillation colu...

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2004 IFAC Workshop on Adaptation and Learning in Control and Signal Processing, ALCOSP 2004 and IFAC Workshop on Periodic Control systems, PSYCO 2004

作者： Yumoto, Takamasa Ohtani, Tetsuya Ohmori, Hiromitsu Engineering and Development Div. Omega Simulation Co. Ltd. Advanced Solutions Research Center Yokogawa Electric Corporation Department of System Design Engineering Keio University Japan

In this paper we provide a novel model-based control system for nonlinear process for the purpose of minimizing an objective function, followed by similar research areas such as dynamic optimization and model predictive control. Their target processes have large nonlinearity, multi manipulated variables and multi control variables. We then provide our control system scheme and an optimization algorithm. We also illustrate the results obtained from application of a depropanizer distillation column using a rigorous plant-wide dynamic simulator. Copyright © 2004 IFAC.

关键词： Distillation columns

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Gender Disparities in Artificial Intelligence–Generated Images of Hospital Leadership in the United States

Mayo Clinic Proceedings: Digital Health

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Mayo Clinic Proceedings: Digital Health 2025年第2期3卷 100218-100218页

作者： Gisselbaek, Mia Berger-Estilita, Joana Minsart, Laurens Köselerli, Ekin Devos, Arnout Matos, Francisco Maio Barreto Chang, Odmara L. Dieckmann, Peter Suppan, Melanie Saxena, Sarah Division of Anesthesiology Department of Anesthesiology Clinical Pharmacology Intensive Care and Emergency Medicine Geneva University Hospitals and Faculty of Medicine Switzerland Unit of Development and Research in Medical Education (UDREM) Faculty of Medicine University of Geneva Switzerland Institute for Medical Education University of Bern Switzerland CINTESIS@RISE Centre for Health Technology and Services Research Faculty of Medicine University of Porto Portugal Department of Anesthesia Cork University Hospital Ireland Department of Anesthesiology and ICU University of Ankara School of Medicine Turkey ETH AI Center Swiss Federal Institute of Technology Zurich (ETH Zurich) Switzerland Anesthesiology Department Hospitais da Universidade de Coimbra Portugal Faculty of Medicine University of Coimbra Portugal Clinic Academic Center of Coimbra Portugal Department of Anesthesia and Perioperative Care University of California San Francisco CA United States Copenhagen Academy for Medical Education and Simulation (CAMES) Capital Region of Denmark Herlev Denmark Department of Quality and Health Technology University in Stavanger Norway Department of Public Health Copenhagen University Denmark Department of Anesthesiology Mons Helora Belgium Department of Surgery UMons Research Institute for Health Sciences and Technology University of Mons Belgium

Objective: To evaluate demographic representation in artificial intelligence (AI)–generated images of hospital leadership roles and compare them with real-world data from US hospitals. Patients and Methods: This cross-sectional study, conducted from October 1, 2024 to October 31, 2024, analyzed images generated by 3 AI text-to-image models: Midjourney 6.0, OpenAI ChatGPT DALL-E 3, and Google Gemini Imagen 3. Standardized prompts were used to create 1200 images representing 4 key leadership roles: chief executive officers, chief medical officers, chief nursing officers, and chief financial officers. Real-world demographic data from 4397 US hospitals showed that chief executive officers were 73.2% men;chief financial officers, 65.2% men;chief medical officers, 85.7% men;and chief nursing officers, 9.4% men (overall: 60.1% men). The primary outcome was gender representation, with secondary outcomes including race/ethnicity and age. Two independent reviewers assessed images, with interrater reliability evaluated using Cohen κ. Results: Interrater agreement was high for gender (κ=0.998) and moderate for race/ethnicity (κ=0.670) and age (κ=0.605). DALL-E overrepresented men (86.5%) and White individuals (94.5%). Midjourney showed improved gender balance (69.5% men) but overrepresented White individuals (75.0%). Imagen achieved near gender parity (50.3% men) but remained predominantly White (51.5%). Statistically significant differences were observed across models and between models and real-world demographics. Conclusion: Artificial intelligence text-to-image models reflect and amplify systemic biases, overrepresenting men and White leaders, while underrepresenting diversity. Ethical AI practices, including diverse training data sets and fairness-aware algorithms, are essential to ensure equitable representation in health care leadership. © 2025 The Authors

关键词： AI artificial intelligence CEO chief executive officer CMO chief medical officer CNO chief nursing officer CFO chief financial officer DEAI diversity, equity, accessibility, and inclusion

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AN EXPERIMENTAL STUDY ON THE HIGH-SPEED WHEEL-RAIL ADHESION CHARACTERISTICS OF BRAKING LARGE CREEP UNDER WATER CONDITION 12

AN EXPERIMENTAL STUDY ON THE HIGH-SPEED WHEEL-RAIL ADHESION ...

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12th International Conference on Contact Mechanics and Wear of Rail/Wheel systems, CM 2022

作者： Chang, Chongyi Chen, Bo Cai, Yuanwu Wang, Junbiao Railway Science and Technology Research & Development Center China Academy of Railway Sciences Corporation Limited Beijing China Wheel-Rail System Laboratory National Engineering Research Center of System Technology for High-Speed Railway andUrban Rail Transit Beijing China

ISBN: (纸本)9780646865881

With the increase of train velocity, the wheel-rail adhesion behavior will change, which will directly affect the utilization of wheel-rail adhesion during traction and braking of high-speed trains. Common rain and snow weather will cause a significant decrease in the wheel-rail adhesion coefficient. When the adhesion is insufficient, the EMU often has wheel-rail scratches and go beyond the limited braking distance, which endangers driving safety. The engineering application of brake adhesion of high-speed EMUs mainly uses the second peak of adhesion increase (the best adhesion coefficient) in the process of large creep through brake anti-skid control, but its behavior characteristics and micro-mechanism are still unclear, which restricts effective use of brake adhesion of high-speed trains. In this paper, a high-speed full-scale roller rig of wheel-rail interface is used to study the high-speed wheel-rail adhesion characteristics of large braking creep under water medium, wheel-rail adhesion characteristics of large braking creep under water condition based on the full-scale high-speed test rig is proposed, and the test of the influence law of the braking adhesion characteristics is carried out in the continuous change range of 0~30% of the longitudinal creep at the velocity of 100-400km/h under the water condition, with medium roughness level (Ra 0.4~0.6 µm) of the contact interface of the wheel and rail. The test results reveal the law of large creep adhesion characteristics of high-speed wheel-rail under water condition, and provide a theoretical basis for improving the utilization of EMU braking adhesion. © 2022 CM 2022 - 12th International Conference on Contact Mechanics and Wear of Rail/Wheel systems, Conference Proceedings. All rights reserved.

关键词： Adhesion

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Enhanced secondary pollution offset reduction of primary emissions during COVID-19 lockdown in China

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National Science Review 2021年第2期8卷 51-59页

作者： Xin Huang Aijun Ding Jian Gao Bo Zheng Derong Zhou Ximeng Qi Rong Tang Jiaping Wang Chuanhua Ren Wei Nie Xuguang Chi Zheng Xu Liangduo Chen Yuanyuan Li Fei Che Nini Pang Haikun Wang Dan Tong Wei Qin Wei Cheng Weijing Liu Qingyan Fu Baoxian Liu Fahe Chai Steven J.Davis Qiang Zhang Kebin He School of Atmospheric Sciences Nanjing University Chinese Research Academy of Environmental Sciences Department of Earth System Science Tsinghua University State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua University Department of Earth System Science University of California Jiangsu Environmental Monitoring Center Jiangsu Provincial Academy of Environment Science Shanghai Environmental Monitoring Center Beijing Key Laboratory of Airborne Particulate Matter Monitoring Technology Beijing Municipal Environmental Monitoring Center

To control the spread of the 2019 novel coronavirus(COVID-19), China imposed nationwide restrictions on the movement of its population(lockdown) after the Chinese New Year of 2020, leading to large reductions in economic activities and associated emissions. Despite such large decreases in primary pollution, there were nonetheless several periods of heavy haze pollution in eastern China, raising questions about the well-established relationship between human activities and air quality. Here, using comprehensive measurements and modeling, we show that the haze during the COVID lockdown was driven by enhancements of secondary pollution. In particular, large decreases in NOx emissions from transportation increased ozone and nighttime NO3radical formation, and these increases in atmospheric oxidizing capacity in turn facilitated the formation of secondary particulate matter. Our results, afforded by the tragic natural experiment of the COVID-19 pandemic, indicate that haze mitigation depends upon a coordinated and balanced strategy for controlling multiple pollutants.

关键词： COVID-19 haze pollution ozone emission reduction secondary pollution

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Model-based method to evaluate quantified technical risks

Model-based method to evaluate quantified technical risks

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2012 IEEE 6th International Conference on Management of Innovation and technology, ICMIT 2012

作者： Zhao, G.Y. Xing, C.G. Zhao, G. Sun, Y.F. School of Reliability and System Engineering Beihang University Beijing China Aeronautical Technology Research Division Aviation Industry Development Research Center of China Beijing China

ISBN: (纸本)9781467301107

Risks and uncertainties are major concerned in the construction of large-scale projects like weapon equipment, whose success shall be got through a compulsory evaluation on those risks and uncertainties during the execution of the projects. And the technology readiness has gained wide attentions in recent years with its characteristics like hierarchy, delicacy, etc. and played a very important role in fields inclusive of equipment procurement. Based on the model of technology readiness, this article evaluates equipment risks through an evaluation on technology readiness, manifests technical risks through one quantified evaluation, controls risks using verification rules, studies risk evaluation method encircling an evaluation on technology readiness, and provides the specific work flow process for such method. © 2012 IEEE.

关键词： Construction equipment

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Genome-wide association analyses for revealing QTN, QTN-by-environment and QTN-by-QTN interactions in soybean phenology

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Theoretical and Applied Genetics 2025年第6期138卷 1-15页

作者： Yan, Wenliang Liang, Xitong Li, Yang Jiang, Xingtian Liu, Bing Liu, Leilei Feng, Jianying Karikari, Benjamin Zhao, Tuanjie Jiang, Haiyan Zhu, Yan Sanya Institute of Nanjing Agricultural University Nanjing Agricultural University Sanya572025 China National Engineering and Technology Center for Information Agriculture Engineering Research Center of Smart Agriculture Ministry of Education Key Laboratory for Crop System Analysis and Decision Making Ministry of Agriculture Jiangsu Key Laboratory for Information Agriculture Jiangsu Collaborative Innovation Center for Modern Crop Production Nanjing Agricultural University Jiangsu Nanjing210095 China /National Innovation Platform for Soybean Breeding and Industry-Education Integration/State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization/College of Agriculture Nanjing Agricultural University Nanjing210095 China College of Artificial Intelligence Nanjing Agricultural University Nanjing Jiangsu Nanjing210095 China Département de Phytologie Université Laval QuébecQCG1 V 0 A6 Canada Department of Agricultural Biotechnology Faculty of Agriculture Food and Consumer Sciences University for Development Studies P.O. Box TL 1882 Tamale Ghana

Context: Phenology plays an important role in determining the yield and environmental adaptation of soybean, but easily affected by quantitative trait nucleotides (QTN)-by-environment interactions (QEI) and QTN-by-QTN interactions (QQIs). Detailed understanding of the genetic basis and the interactions between genome and environments is critical for the development of cultivars with geographical-appropriate phenology. Methods: A compressed variance component mixed model (3VmrMLM) was used to detect QTNs, QEIs and QQIs for four key phenological traits of 345 soybean accessions. These traits include days from emergence to first flower (R1), pod beginning (R3), seed formation (R5) and maturity initiation (R7). Meanwhile, QTNs, QEIs and QQIs were identified in at least ten environments and Best Linear Unbiased Prediction (BLUP) value. Results: (i) A total of 110–193 QTNs, 10–31 QEIs and 4–8 QQIs were identified for each trait. (ii) Sixty-six genes involved in regulation of flower to maturity were identified by functional annotations of GO. (iii) Further haplotype analysis assigned soybean phenology-associated genes into 34 haplotype blocks with 136 haplotypes. (iv) Fifty-nine genes contained within 31 haplotype blocks can be considered as candidate genes for regulating soybean phenology, because changes in these haplotypes led to significant variations in the corresponding phenological traits. Conclusions: Extensive genetic analysis of the QEIs and QQIs was conducted on key phenological stages in soybean. The candidate genes predicted provide valuable information for functional validation to elucidate the molecular mechanism underlying the soybean phenology. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2025.

关键词： Vegetation

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A Light Source system of Multi-star Simulator with Adjustable Background and Controllable Magnitude

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空间科学学报 2017年第6期37卷 760-765页

作者： SUN Gaofei LIU Shi ZHANG Guoyu ZHANG Yu LEI Jie MA Yiyuan College of Optoelectronic Engineering Changchun University of Science and Technology Changchun 130022 Optical Measurement and Control Instrumentation Jilin Province Engineering Research Center Changchun 130022 Key Laboratory of Space System Simulation Beijing 100853

A light source of multi-star simulator capable of background adjustment and magnitude control has been *** integrating spheres are employed as the star-point light source and the background light source respectively.A beam splitter prism has been designed to serve as the beam combiner for the star-point and the background light sources,and a mathematical model has been constructed respectively to compute the light flux of the two integrating spheres.A magnitude testing system and a background testing system have been created using low-light illuminometer,luminance meter,and testing instruments to measure the star-point magnitude and the background luminance of the multi-star *** test results suggest that the star-point magnitude is adjustable from0 to+5 m_v,with a simulation precision superior to ±0.026 m_*** maximum background luminance is 3.8×10~5 cd·m^(-2),and the minimum background luminance is6.4×10^(-2)cd·m^(-2).The designed light source system can meet the requirements for simulating the stellar map with a sky background.

关键词： Adjustable background Controllable magnitude Multi-Star simulator Light source

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development of infrared and millimeter wave scene generators for the P3I BAT high fidelity flight simulation

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International Conference on Computational Science, ICCS 2001

作者： Farris, Jeremy R. Drake, Marsha System Simulation and Development Directorate U.S. Army Aviation and Missile Research and Development Center U.S. Army Aviation and Missile Command Redstone ArsenalAL35898 United States Simulation Technologies Inc 3307 Bob Wallace Avenue HuntsvilleAL35805 United States

ISBN: (纸本)3540422331

The Pre-planned Product Improvement (P3I) Brilliant Anti-Armor BAT submunition High Fidelity Flight simulation (HFS) is an all-digital, nonreal- time simulation that combines the P3I BAT Six-Degrees-of-Freedom (6- DOF), a high fidelity dual mode seeker model, tactical flight software, and infrared (IR)/millimeter-wave (MMW) scene generation to produce a tool capable of system design, algorithm development and performance assessment. The HFS development methodology emphasizes the use of high fidelity IR and MMW imagery so that the seeker algorithms/tactical software can be incorporated to form a Software-In-The-Loop (SWIL) simulation. The IR and MMW scene generators use validated IR and MMW target signatures with correlated IR and MMW backgrounds to produce a realistic scene for a variety of battlefield scenarios. Both the IR and MMW scene generators have evolved with the availability high performance computational capability and system development to meet the design and performance assessment requirements of the P3I BAT program. © Springer-Verlag Berlin Heidelberg 2001.

关键词： Millimeter waves

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Application study of a correction method for a spacecraft thermal model with a Monte-Carlo hybrid algorithm

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Chinese Science Bulletin 2011年第13期56卷 1407-1412页

作者： CHENG WenLong LIU Na LI Zhi ZHONG Qi WANG AiMing ZHANG ZhiMin HE ZongBo Department of Thermal Science and Energy Engineering University of Science and Technology of China Hefei 230027 China Research and Development Center China Academy of Space Technology Beijing 100094 China Beijing Institute of Spacecraft System Engineering Chinese Academy of Space Technology Beijing 100094 China

The correction of a thermal model for a thermally controlled satellite in ground test conditions is studied using a Monte Carlo hybrid ***,the global and local parameters are summarized according to sensitivity analyses on uncertain parameters,and then the model correction is treated as a parameter optimization problem to be solved with a hybrid ***,the correction of the thermal model is completed using a layered correction *** sensitivity analysis showed that the effective emissivities across the multi-layer insulation (MLI) and the emissivities of the thermal control coating are global parameters,while the contact heat transfer coefficients are local *** correction,the deviations between the calculated and test values were all within ± 3 ℃.The final results prove that the method in this study is superior to traditional methods and satisfies the requirements for thermal model correction.

关键词：校正方法混合算法热模型蒙特卡洛航天器敏感性分析应用模型修正

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