J. Comput. Methods Sci. Eng.最新文献_第5页

Virtual image multi feature matching algorithm based on 3D scene reconstruction 基于三维场景重建的虚拟图像多特征匹配算法

J. Comput. Methods Sci. Eng. Pub Date : 2023-04-24 DOI: 10.3233/jcm-226757

Jun Yu, Zongren Chen, Xiaobo Jiang, Bo Wang

引用次数: 0

Drying kinetics and heat mass transfer characteristics of thin layer pineapple during microwave vacuum drying 薄层菠萝微波真空干燥动力学及传热传质特性

J. Comput. Methods Sci. Eng. Pub Date : 2023-04-24 DOI: 10.3233/jcm-226758

Ying Zhou, Yongfu Liu, Qiang Li, Wenyan Fan, Xiaoli Pan, Wangxin Yu

{"title":"Drying kinetics and heat mass transfer characteristics of thin layer pineapple during microwave vacuum drying","authors":"Ying Zhou, Yongfu Liu, Qiang Li, Wenyan Fan, Xiaoli Pan, Wangxin Yu","doi":"10.3233/jcm-226758","DOIUrl":"https://doi.org/10.3233/jcm-226758","url":null,"abstract":"Microwave vacuum drying of pineapple slices was carried out to investigate the microwave power degree on the drying kinetics and heat mass transfer characteristics. Numerical simulation and bench test were used to study the variation characteristic of microwave volumetric heating and temperature and moisture during the drying process, and the best drying model was selected. The result shows that the drying process of the pineapple slices belonged to the falling rate period without constant drying stage; Among 6 common thin layer drying kinetic models, the mean values of R2 were maximum, χ2 and RMSE for the Two-term exponential model were minimum, which were 0.9993, 0.000107 and 0.00839, respectively. As the temperature rose to 40∼45∘C at the late stage of drying, the thermal runaway phenomenon appeared, and the internal temperature of pineapple slices rose sharply. Hot spots appeared at the center and edge of pineapple at the late stage of drying, and it generated by microwave volumetric heating focusing. The predicted values of moisture ratio (MR) obtained from COMSOL simulation showed good consistency with the Two-term exponential model and the experimental. In order to improve the drying quality of the pineapple, the microwave power should be varied and reasonable interval to make the drying temperature lower than the thermal runaway temperature range.","PeriodicalId":14668,"journal":{"name":"J. Comput. Methods Sci. Eng.","volume":"79 1","pages":"1165-1178"},"PeriodicalIF":0.0,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73908189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The analysis of time-sharing economic exergy efficiency of the CCHP system using planetary search algorithms 基于行星搜索算法的热电联产分时经济性分析

J. Comput. Methods Sci. Eng. Pub Date : 2023-04-23 DOI: 10.3233/jcm-226745

Shuqian Si, Z. Dou, Zichen Wang, J. Dong

{"title":"The analysis of time-sharing economic exergy efficiency of the CCHP system using planetary search algorithms","authors":"Shuqian Si, Z. Dou, Zichen Wang, J. Dong","doi":"10.3233/jcm-226745","DOIUrl":"https://doi.org/10.3233/jcm-226745","url":null,"abstract":"CCHPs (Combined Cooling, Heating, and Power Systems) are capable of providing cold energy, heat, and electricity to users, allowing cascading utilization of energy and improving energy efficiency. The imbalance between cooling, heating, and electrical energy makes it difficult to accurately evaluate the performance of a CCHP system. Existing indices for evaluating the performance of the CCHP system do not account for the influence of time-sharing tariffs; therefore, the quantitative index of time-sharing is added and the time-sharing economic exergy efficiency of the radiator is established. Given that the electrical and thermal characteristics of the advanced absolutely hot compressed airheat storage system (AA-CAES) can complement the CCHP system, a model of the CCHP system with AA-CAES is established, which can be used to validate the validity of the quantitative evaluation index of time-sharing. A planetary search algorithm is proposed for solving the CCHP system model to address the multi-parameter solving characteristics of the CCHP system model and the disadvantages of the existing multi-objective optimization algorithms, which are prone to local optimality and poor optimization accuracy. Simulation validation demonstrates that the time-sharing economic exergy efficiency proposed in this paper can more accurately reflect the total energy consumption of the CCHP system than the existing evaluation indices. The performance of the CCHP system can be improved by using AA-CAES as a heat storage device.","PeriodicalId":14668,"journal":{"name":"J. Comput. Methods Sci. Eng.","volume":"101 1","pages":"2205-2224"},"PeriodicalIF":0.0,"publicationDate":"2023-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83706556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Study on the VLSI Implementation of Fingerprint Thinning Processors Using Hybrid GDI Technique 基于混合GDI技术的指纹细化处理器VLSI实现研究

J. Comput. Methods Sci. Eng. Pub Date : 2023-03-31 DOI: 10.5626/jcse.2023.17.1.20

Seung-Mo Jung

引用次数: 0

A New Profiling-Based Side-Channel Attack on Graphics Processing Units 一种新的基于剖面的图形处理单元侧信道攻击

J. Comput. Methods Sci. Eng. Pub Date : 2023-03-31 DOI: 10.5626/jcse.2023.17.1.30

Xin Wang, Wei Zhang

引用次数: 0

Knowledge Distillation for Optical Flow-Based Video Super-resolution 基于光流的视频超分辨率知识蒸馏

J. Comput. Methods Sci. Eng. Pub Date : 2023-03-31 DOI: 10.5626/jcse.2023.17.1.13

Jungwon Lee, Sang-hyo Park

引用次数: 0

Pharos: A Transparent and Steerable Visualization Recommendation System Pharos:一个透明和可操纵的可视化推荐系统

J. Comput. Methods Sci. Eng. Pub Date : 2023-03-31 DOI: 10.5626/jcse.2023.17.1.1

Youli Chang, S. L’Yi, Young Taek Kim, Hyunjoo Song, Bohyoung Kim, Jinwook Seo

引用次数: 0

The 2023 Society for Industrial and Applied Mathematics Conference on Computational Science and Engineering 2023年工业与应用数学学会计算科学与工程会议

J. Comput. Methods Sci. Eng. Pub Date : 2023-03-01 DOI: 10.1109/mcse.2023.3298114

D. Rouson, K. Hinsen, Jeffrey Carver, I. Tezaur, J. Shalf, Rio Yokota, Anshuk Dubey

引用次数: 0

Science Gateways: Accelerating Research and Education - Part II 科学门户:加速研究和教育-第二部分

J. Comput. Methods Sci. Eng. Pub Date : 2023-03-01 DOI: 10.1109/mcse.2023.3290926

Patrick Diehl, Rafael Ferreira da Silva

引用次数: 0

Real-time anomaly attack detection based on an improved variable length model 基于改进变长模型的实时异常攻击检测

J. Comput. Methods Sci. Eng. Pub Date : 2023-02-09 DOI: 10.3233/jcm-226663

Xiaomei Liu, Jian Yue

{"title":"Real-time anomaly attack detection based on an improved variable length model","authors":"Xiaomei Liu, Jian Yue","doi":"10.3233/jcm-226663","DOIUrl":"https://doi.org/10.3233/jcm-226663","url":null,"abstract":"This paper uses a real-time anomaly attack detection based on improved variable length sequences and data mining. The method is mainly used for host-based intrusion detection systems on Linux or Unix platforms which use shell commands. The algorithm first generates a stream of command sequences with different lengths and subsumes them into a generic sequence library, de-duplicats and sortes shell command sequences. The shell command sequences are then stratified according to their weighted frequency of occurrence to define the state. Next, the behavioural patterns of normal users are mined to output the state stream and a Markov chain is constructed. Then, the state sequences are calculated based on a primary probability distribution and a transfer probability matrix. The System will check decision values of the short sequence stream. Finally, the decision values of the behavioural sequences are analysed to determine whether the current session user is behaving abnormally. The improved algorithm introduces the concept of multi-order frequencies and proposes a new separation mechanism. The extension module is integrated into the variable length model. By comparing the performance of the old and new separation mechanisms on the SEA dataset and the self-made dataset (SD), it is found that the improved model greatly improves the performance of the model and shortens the running time.","PeriodicalId":14668,"journal":{"name":"J. Comput. Methods Sci. Eng.","volume":"1 1","pages":"1179-1195"},"PeriodicalIF":0.0,"publicationDate":"2023-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73116478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0