检索结果-内蒙古大学图书馆

European control Conference (ECC)

作者： Manuel Kollmar Lilli Frison Adrian Bü rger Axel Oliva Angelika Altmann-Dieses Moritz Diehl Faculty of Management Science and Engineering Karlsruhe University of Applied Sciences Germany Air-Conditioning and Environmental Engineering (IKKU) Institute of Refrigeration Karlsruhe University of Applied Sciences Germany Fraunhofer Institute for Solar Energy Systems (ISE) Freiburg Germany Department of Microsystems Engineering (IMTEK) Systems Control and Optimization Laboratory University of Freiburg Germany Department of Mathematics University of Freiburg Germany

ISBN: (数字)9783907144077

ISBN: (纸本)9781665497336

This work investigates the solution of Mixed-Integer Optimal control Problems (MIOCPs) for an existing residential heating network. The network consists of several buildings that are interconnected through a district heating network and a biomethane combined heat and power (CHP) plant. All buildings have access to decentralized heat generation, in the form of solar thermal collectors on the rooftops of the buildings. Buildings with surplus heat are intended to transfer heat to buildings with heating demands in order to prevent the activation of the CHP plant. Additional storage provide further flexibility for storage and utilization of heat. Binary variables represent the exchange relations between buildings and the CHP plant. For this system, we solve an MIOCP in two different ways. On the one hand, we keep the system related nonlinearities and apply the Combinatorial Integral Approximation (CIA) method to the arising Mixed-Integer Nonlinear Program (MINLP). On the other hand, we apply a linear reformulation yielding a Mixed-Integer Linear Program (MILP), which we solve using a standard MILP solver. We show that the MINLP approach has a computational advantage over the MILP approach, while yielding only slightly worse results in the single-digit percentage range for selected key figures.

关键词： Cogeneration Thermal variables control Buildings Optimal control Switches Programming Solar heating

来源：评论

学校读者我要写书评

暂无评论

Explainable image segmentation for spatio-temporal and multivariate image data in precipitation nowcasting

引用

Results in engineering 2025年 26卷

作者： Ahangama, Imantha Meedeniya, Dulani Pradhan, Biswajeet Department of Computer Science and Engineering Faculty of Engineering University of Moratuwa Moratuwa Sri Lanka Centre for Advanced Modelling and Geospatial Information Systems School of Civil and Environmental Engineering Faculty of Engineering and IT University of Technology Sydney Ultimo Australia

Artificial Intelligence (AI) systems are often opaque in nature, making it difficult to understand the region-of-interest in the input for the predictions. This creates a challenge in convincing people who rely on traditional methods to trust the outputs of automated systems. This study presents a novel framework based on Integrated Gradients (IG) with a U-Net to interpret multivariate, spatio-temporal input sequences for precipitation nowcasting. We utilize Integrated gradients methods to explain the predictions made by a deep learning model for precipitation nowcasting, which takes a multi-image sequence as its input. We use the Meteonet dataset by MeteoFrance and form it into a spatio-temporal multivariate dataset consisting of rain radar, satellite, and wind images to predict rainfall 30 minutes ahead. We employ the U-Net model and evaluate the model's explainability using Integrated gradients. The resulting system achieves an F1 score of 0.760 and a Critical Success Index of 0.613 on an unseen 2018 test set, matching state-of-the-art radar-only baselines while providing pixel-level attributions. Our results help to explain the reasons behind the predictions. The obtained visual representation offers potential explanations for the classification of spatio-temporal or multivariate datasets. Additionally, this study provides a comparative analysis of the level of contribution of each image in the input sequence to the final result. Removing the eight least-important frames identified by IG reduces the input by 73%, yet preserves performance (F1 = 0.759 vs 0.760). Consequently, the proposed approach shows its usability in dimensionality reduction, enhancing the interpretability and efficiency of the predictive model. © 2025 The Author(s)

关键词： Artificial intelligence Integrated gradient Satellite U-Net

来源：评论

学校读者我要写书评

暂无评论

An Intelligent MPPT Technique based on Fuzzy controller Applied to Grid-Connected PV systems in Temperature Fluctuations

An Intelligent MPPT Technique based on Fuzzy Controller Appl...

引用

Electronic engineering (ICEEM), International Conference on

作者： M. S. Elborlsy Ahmed. E. A. Hussien Mostafa A. Ebied Process Control Technology Dept. Faculty of Technology and Education Beni-Suef University Beni-Suef Egypt Renewable Energy Science and Engineering Department Faculty of Postgraduate Studies for Advanced Sciences (PSAS) Beni-Suef University Beni-Suef Egypt Electronics Technology Dept. Faculty of Technology and Education Beni-Suef University Beni-Suef Egypt

Maximum power point tracking (MPPT) performs an essential part in harnessing the maximum power output from photovoltaic (PV) generators, regardless of fluctuations in temperature and irradiation conditions. This makes MPPT essential for maximizing the efficiency of PV systems. The boost converter handles increasing the PV DC voltage. Numerous MPPT algorithms are used to control these trackers, and one such technique is the fuzzy logic controller (FLC). The FLC can adapt to changes in environmental conditions and system parameters like temperature and Solar radiation, which can affect the performance of traditional control strategies. Consequently, fuzzy-logic-based MPPT control offers improved performance and higher efficiency in grid-connected PV systems (GCPV), mainly when operating conditions vary. To prove the benefits of this approach compared to Incremental Conductance (IC) under normal temperature conditions, GCPV is modeled using the MATLAB program.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Actuating mechanical arms coupled to an array of FitzHugh–Nagumo neuron circuits

引用

The European Physical Journal Special Topics 2022年第2期232卷 285-299页

作者： Ngongiah, Isidore Komofor Ramakrishnan, Balamurali Kuiate, Gaetan Fautso Tagne, Raphael Kingni, Sifeu Takougang Department of Physics Faculty of Science University of Bamenda Bamenda Cameroon Center for Nonlinear Systems Chennai Institute of Technology Chennai India Department of Physics Higher Teacher Training College University of Bamenda Bamenda Cameroon Department of Mechanical and Industrial Engineering National Higher Polytechnic Institute University of Bamenda Bamenda Cameroon Laboratory of Mechanics and Modelling of Physical Systems (L2MPS) Department of Physics Faculty of Science University of Dschang Dschang Cameroon Department of Mechanical Petroleum and Gas Engineering National Advanced School of Mines and Petroleum Industries University of Maroua Maroua Cameroon

The paper is aimed at mimicking the motion of myriapods by using an array of mechanical arms coupled to an array of FitzHugh–Nagumo (FN) neuron circuits. The differential equation depicting the electromechanical system is achieved by using Kirchhoff’s and Newton’s laws. The system parameters are sensitive to the stability of the system as shown by numerical simulations such that for different ranges of the stimulation current, the array of the FN neuron circuit coupled to a single mechanical arm is either in the non-excitable state, excitable state or in the oscillatory state. For the values of the stimulation current in the excitable state, an action potential (AP) achieved produced an excitation greater enough to actuate significantly the mechanical leg. In the excitable state, the action of the magnetic signal on the single mechanical arm increases the amplitude of the instantaneous displacement of the legs. The array of the coupled electromechanical system in the excitable state produces an AP for the different values of the legs having the same behavior as shown by numerical simulations, which implied that neurons communicate without loss of amplitude when in the permanent regime. This behavior is similar to the instantaneous displacement of the mechanical legs, hence depicting the straightforward motion of myriapods without rotation. Finally, the velocities of the propagation of nerve impulses and that of the displacement of legs are quantitatively the same.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Research of the Information Security Audit System in Organizations

Research of the Information Security Audit System in Organiz...

引用

Smart Information systems and Technologies (SIST), IEEE International Conference on

作者： Aasso Ziro Shara Toibayeva Sergiy Gnatyuk Azamat Imanbayev Maksim Iavich Zhanshuak Zhaybergenova Faculty of IT School of IT and Engineering KazNU named after al-Farabi Kazakh-British Technical University Almaty Kazakhstan Department of Automation and Control University of Power Engineering and Telecommunications (AUPET) named after G. Daukeev Almaty Kazakhstan Faculty of Copmuter Science and Technologies National Aviation University Kyiv Ukraine Faculty of IT School of IT and Engineering KazNU named after al-Farabi Kazakh-British Technical University Almaty Kazakhstan School of technology Caucasus University Tbilisi Georgia Department of intelegent systems and cybersecurity Astana IT University Astana Kazakhstan

The field of information security is constantly evolving, and new threats appear every day. To ensure that organizations remain protected from these threats, it is important to have a reliable information security audit system. The purpose of this study is to study the current state of information security audit systems in organizations and identify the best practices for the implementation and maintenance of these systems. In the course of the study, various methods and methods of conducting an information security audit will be analyzed, security analysis tools and information security tools.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Scenario Assessment of Neodymium and Cobalt Recycling in ASEAN Countries Based on a Dynamic Material Flow Analysis

SSRN

引用

SSRN 2023年

作者： Rustandi, Rendi Ahmad Morimoto, Shinichirou Borrirukwisitsak, Siriporn Khwamsawat, Kannika Chaipurimas, Supaluk Leewattananukul, Surachai Khaodhiar, Sutha Systems and Information Engineering Graduate School of Science and Technology University of Tsukuba Ibaraki Tsukuba305-8573 Japan Department of Energy and Environment National Institute of Advanced Industrial Science and Technology Ibaraki Tsukuba305-8569 Japan Department of Environmental Science Faculty of Science Silpakorn University Nakhon Pathom73000 Thailand Center of Excellence on Hazardous Substance Management Chulalongkorn University Bangkok10330 Thailand

Tackling global greenhouse gas (GHG) emissions warrants a radical shift to low-carbon technologies, including batteries and permanent magnets. This shift will increase demand for critical raw materials (CRMs). This study offers dynamic material flow analysis (MFA) to address uncertainties associated with the sustainable supply of neodymium (Nd) and cobalt (Co): CRMs used in NdFeB magnets and lithium-ion batteries in ASEAN. Annual maximum and minimum scenario estimates were conducted for demand and waste of CRMs and CO2 emissions of recycled versus virgin materials. Based on the results, in 2050, 3,209 ton/y of Nd will be discarded, of which 25.3% will be accumulated as hibernating stock. Moreover, 33.79% of Co will be kept as hibernating stock. Recycling NdFeB magnets and batteries could reduce CO2 emissions up to 1,536 kton CO2-Eq/y and 313.5 kton CO2-Eq/y, respectively, by 2050. The proposed dynamic MFA is a useful foundation for the creation of effective global standards. © 2023, The Authors. All rights reserved.

关键词： Carbon dioxide

来源：评论

学校读者我要写书评

暂无评论

Do We Run Large-scale Multi-Robot systems on the Edge? More Evidence for Two-Phase Performance in System Size Scaling

arXiv

引用

arXiv 2023年

作者： Kuckling, Jonas Luckey, Robin Avrutin, Viktor Vardy, Andrew Reina, Andreagiovanni Hamann, Heiko The Department of Computer and Information Science University of Konstanz Konstanz78457 Germany The Centre for the Advanced Study of Collective Behaviour University of Konstanz Germany The Institute of Computer Engineering University of Lübeck Lübeck Germany The Institute for Systems Theory and Automatic Control University of Stuttgart Stuttgart Germany The Department of Computer Science The Department of Electrical and Computer Engineering Memorial University of Newfoundland St. John's Canada IRIDIA Université Libre de Bruxelles Brussels Belgium

With increasing numbers of mobile robots arriving in real-world applications, more robots coexist in the same space, interact, and possibly collaborate. Methods to provide such systems with system size scalability are known, for example, from swarm robotics. Example strategies are self-organizing behavior, a strict decentralized approach, and limiting the robot-robot communication. Despite applying such strategies, any multi-robot system breaks above a certain critical system size (i.e., number of robots) as too many robots share a resource (e.g., space, communication channel). We provide additional evidence based on simulations, that at these critical system sizes, the system performance separates into two phases: nearly optimal and minimal performance. We speculate that in real-world applications that are configured for optimal system size, the supposedly high-performing system may actually live on borrowed time as it is on a transient to breakdown. We provide two modeling options (based on queueing theory and a population model) that may help to support this reasoning. © 2023, CC BY.

关键词： Multipurpose robots

来源：评论

学校读者我要写书评

暂无评论

Corrosion Behavior of Chromium Coating on Ferritic/Martensitic Steels in High Temperature Lbe

SSRN

引用

SSRN 2023年

作者： Wang, Li Liao, Qing Gan, Shuyun Zhang, Hongpeng Chang, Hailong Wang, Renda Ge, Feng Chen, Liming Liu, Sijie Xu, Shuai Polcar, Tomas Daghbouj, N. Li, Bingsheng State Key Laboratory for Environment-friendly Energy Materials Southwest University of Science and Technology Sichuan Mianyang621010 China Institute of Modern Physics Chinese Academy of Sciences Gansu Lanzhou73000 China Engineering Laboratory of Advanced Energy Materials Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Zhejiang Ningbo315201 China Department of Control Engineering Faculty of Electrical Engineering Czech Technical University in Prague Technická 2 Prague 6160 00 Czech Republic Department of Materials

This study focused on depositing chromium coating on T91 steel and SIMP steel using magnetron sputtering. The corrosion behavior of the chromium coating was then examined in static LBE at temperatures of 600°C and 700°C. The findings revealed that T91 steel and SIMP steel, without chromium coating, displayed a thick duplex oxide scale on their surfaces. In contrast, the chromium coating resulted in the formation of a dense layer of chromium oxide (Cr2O3), effectively hindering oxygen diffusion and iron migration. Furthermore, the chromium coating remained securely attached to the matrix even after LBE corrosion. © 2023, The Authors. All rights reserved.

关键词： Magnetron sputtering

来源：评论

学校读者我要写书评

暂无评论

Fault-tolerant control of semi-active suspension in case of oil leakage of magnetorheological damper

Fault-tolerant control of semi-active suspension in case of ...

引用

European control Conference (ECC)

作者： Hakan Basargan Filip Jeniš András Mihály Péter Gáspár Department of Control for Transportation and Vehicle Systems Budapest University of Technology and Economics Stoczek u. 2 Budapest Hungary Faculty of Mechanical Engineering Institute of Machine and Industrial Designs Brno University of Technology Technicka 2 Brnos Czech Republic Systems and Control Laboratory Institute for Computer Science and Control (SZTAKI) Eötvös Loránd Research Network (ELKH) Kende u. 13-17 Budapest Hungary

The paper presents a reconfigurable fault-tolerant control strategy for a semi-active suspension using magnetorheological (MR) damper. The aim of the control reconfiguration is to handle the adverse behaviour of the MR damper due to oil leakage induced by the wear of the suspension component. The proposed method relies on the data driven model of the MR damper, using an estimation procedure to quantify the healthiness of the damper and to estimate the performance degradation due to the oil leakage. The reconfiguration control strategy is founded on the Linear Parameter Varying (LPV) framework, where a scheduling variable is defined to represent the healthiness level of the MR damper. By the scaling of the control action through the scheduling variable, the performance degradation of the MR damper can be compensated to match the behaviour of the healthy dampers. The proposed method is demonstrated through simulations, comparing the performance of the fault-tolerant LPV control to conventional semi-active control methods

关键词：

来源：评论

学校读者我要写书评

暂无评论

Emerging contaminants:A One Health perspective

引用

The Innovation 2024年第4期5卷 140-170,139页

作者： Fang Wang Leilei Xiang Kelvin Sze-Yin Leung Martin Elsner Ying Zhang Yuming Guo Bo Pan Hongwen Sun Taicheng An Guangguo Ying Bryan WBrooks Deyi Hou Damian EHelbling Jianqiang Sun Hao Qiu Timothy MVogel Wei Zhang Yanzheng Gao Myrna JSimpson Yi Luo Scott XChang Guanyong Su Bryan MWong Tzung-May Fu Dong Zhu Karl JJobst Chengjun Ge Frederic Coulon Jean Damascene Harindintwali Xiankui Zeng Haijun Wang Yuhao Fu Zhong Wei Rainer Lohmann Changer Chen Yang Song Concepcion Sanchez-Cid Yu Wang Ali El-Naggar Yiming Yao Yanran Huang Japhet Cheuk-Fung Law Chenggang Gu Huizhong Shen Yanpeng Gao Chao Qin Hao Li Tong Zhang Natàlia Corcoll Min Liu Daniel SAlessi Hui Li Kristian KBrandt Yolanda Pico Cheng Gu Jianhua Guo Jianqiang Su Philippe Corvini Mao Ye Teresa Rocha-Santos Huan He Yi Yang Meiping Tong Weina Zhang Fidèle Suanon Ferdi Brahushi Zhenyu Wang Syed AHashsham Marko Virta Qingbin Yuan Gaofei Jiang Louis A.Tremblay Qingwei Bu Jichun Wu Willie Peijnenburg Edward Topp Xinde Cao Xin Jiang Minghui Zheng Taolin Zhang Yongming Luo Lizhong Zhu Xiangdong Li DamiàBarceló Jianmin Chen Baoshan Xing Wulf Amelung Zongwei Cai Ravi Naidu Qirong Shen Janusz Pawliszyn Yong-guan Zhu Andreas Schaeffer Matthias C.Rillig Fengchang Wu Gang Yu James M.Tiedje State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China University of Chinese Academy of Sciences Beijing 100049China Department of Chemistry Hong Kong Baptist UniversityHong KongChina HKBU Institute of Research and Continuing Education Shenzhen Virtual University ParkShenzhenChina Technical University of Munich TUM School of Natural SciencesInstitute of Hydrochemistry85748 GarchingGermany School of Resources&Environment Northeast Agricultural UniversityHarbin 150030China Climate Air Quality Research UnitSchool of Public Health and Preventive MedicineMonash UniversityMelbourneVICAustralia Faculty of Environmental Science&Engineering Kunming University of Science&TechnologyKunming 650500China Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria College of Environmental Science and EngineeringNankai UniversityTianjin 300350China Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control School of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China Ministry of Education Key Laboratory of Environmental Theoretical Chemistry South China Normal UniversityGuangzhouGuangdong 510006China Department of Environmental Science Baylor UniversityWacoTXUSA Center for Reservoir and Aquatic Systems Research(CRASR) Baylor UniversityWacoTXUSA School of Environment Tsinghua UniversityBeijing 100084China School of Civil and Environmental Engineering Cornell UniversityIthacaNY 14853USA Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province Zhejiang University of TechnologyHangzhou 310014China School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Laboratoire d’Ecologie Microbienne Universite Claude Bernard Lyon 1UMR CNRS 5557UMR INRAE 1418VetAgro Sup69622 VilleurbanneFrance Department of Pla

Environmental pollution is escalating due to rapid global development that often prioritizes human needs over planetary *** global efforts to mitigate legacy pollutants,the continuous introduction of new substances remains a major threat to both people and the *** response,global initiatives are focusing on risk assessment and regulation of emerging contaminants,as demonstrated by the ongoing efforts to establish the UN’s Intergovernmental science-Policy Panel on Chemicals,Waste,and Pollution *** review identifies the sources and impacts of emerging contaminants on planetary health,emphasizing the importance of adopting a One Health *** for monitoring and addressing these pollutants are discussed,underscoring the need for robust and socially equitable environmental policies at both regional and international *** actions are needed to transition toward sustainable pollution management practices to safeguard our planet for future generations.

关键词： pollution planet contaminants

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：