亲爱的研友该休息了!由于当前在线用户较少,发布求助请尽量完整的填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!身体可是革命的本钱,早点休息,好梦!

Modeling and Application of Temporal Correlation of Grain Temperature during Grain Storage

相关系数 相关性 区间(图论) 仓库 数学 材料科学 统计 土壤科学 环境科学 几何学 地理 组合数学 考古
作者
Cui Hongwei,Qu Zhang,Wenfu Wu,Haolei Zhang,Jiangtao Ji,Hao Ma
出处
期刊:Agriculture [MDPI AG]
卷期号:12 (11): 1883-1883
标识
DOI:10.3390/agriculture12111883
摘要

Temperature measurement system malfunction and sensor failure in grain storage warehouses can lead to missing grain temperature data on some days. Missing data is not conducive to the monitoring of grain storage conditions. This paper establishes mathematical models of temporal correlation coefficients of grain temperature and storage time in different planes, and analyzes the influence of storage state change on grain temperature correlation. The historical grain situation data for about one year were selected from 27 flat grain storage warehouses distributed in the second to seventh grain storage ecological zones in China. In addition, correlation coefficients of grain temperature were then calculated on the XOY, XOZ and YOZ planes of each warehouse. During this process, the time interval included 1, 7, 14, 21, 28, 35, 42, 49, 56, 63 and 70 days, meaning that the correlation coefficients between the grain temperature on the day and the grain temperature after storage for 1, 7, 14, 21, 28, 35, 42, 49, 56, 63 and 70 days were calculated. Next, the correlation coefficients from the same time intervals and planes in each warehouse were sequentially connected to form arrays of correlation coefficients. Then, the 3σ-threshold setting methods and DBSCAN (density-based spatial clustering of applications with noise) method were used to analyze the correlation coefficients those arrays. According to the results, we set the correlation coefficient thresholds for each plane (XOY, XOZ and YOZ planes) at each time interval. The models were then established regarding the correlation coefficient thresholds and storage time intervals. Subsequently, the sum of squares for error (SSE), coefficient of determination (R2), and root mean square error (RMSE) were chosen to evaluate the models, with the results showing that the effect of the model established by the threshold set by the 3σ-setting method, with SSE, R2 and RMSE of 0.056, 0.9771 and 0.0748, respectively, was better than the model established using the DBSCAN method. Finally, the correlation coefficients of grain temperatures with empty warehouse, new grain addition, aeration and self-heating were analyzed. The results show that the four modes in a certain time interval (e.g., 30 days) does not meet the correlation coefficient threshold during normal storage. The result can provide a theoretical basis for grain storage condition detection when grain temperature data is intermittently missing.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
科研小白发布了新的文献求助10
3秒前
华仔应助AA采纳,获得10
3秒前
爆米花应助科研小白采纳,获得10
7秒前
清秀网络完成签到 ,获得积分10
13秒前
14秒前
15秒前
15秒前
完美世界应助儒雅友儿采纳,获得10
17秒前
17秒前
yarazhang完成签到,获得积分10
18秒前
慕青应助开心岩采纳,获得10
19秒前
AA发布了新的文献求助10
20秒前
科研小白发布了新的文献求助10
22秒前
29秒前
30秒前
领导范儿应助科研小白采纳,获得10
31秒前
少夫人发布了新的文献求助10
33秒前
AA完成签到,获得积分20
35秒前
35秒前
FashionBoy应助tree采纳,获得10
37秒前
38秒前
少夫人完成签到,获得积分10
38秒前
fdwang完成签到 ,获得积分10
41秒前
科研小白发布了新的文献求助10
45秒前
48秒前
50秒前
完美世界应助超人曼采纳,获得10
51秒前
52秒前
52秒前
54秒前
LY发布了新的文献求助10
55秒前
tree发布了新的文献求助10
55秒前
儒雅友儿发布了新的文献求助10
58秒前
抹茶麻薯发布了新的文献求助10
58秒前
CipherSage应助LY采纳,获得10
59秒前
打打应助科研小白采纳,获得10
1分钟前
1分钟前
1分钟前
Lmyznl完成签到 ,获得积分10
1分钟前
1分钟前
高分求助中
Continuum Thermodynamics and Material Modelling 3000
Production Logging: Theoretical and Interpretive Elements 2700
Mechanistic Modeling of Gas-Liquid Two-Phase Flow in Pipes 2500
Structural Load Modelling and Combination for Performance and Safety Evaluation 1000
Conference Record, IAS Annual Meeting 1977 610
電気学会論文誌D(産業応用部門誌), 141 巻, 11 号 510
Virulence Mechanisms of Plant-Pathogenic Bacteria 500
热门求助领域 (近24小时)
化学 材料科学 生物 医学 工程类 有机化学 生物化学 物理 纳米技术 计算机科学 内科学 化学工程 复合材料 基因 遗传学 物理化学 催化作用 量子力学 光电子学 冶金
热门帖子
关注 科研通微信公众号,转发送积分 3561907
求助须知:如何正确求助?哪些是违规求助? 3135474
关于积分的说明 9412362
捐赠科研通 2835888
什么是DOI,文献DOI怎么找? 1558793
邀请新用户注册赠送积分活动 728442
科研通“疑难数据库(出版商)”最低求助积分说明 716832