ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

基于生物阻抗特性的蘋果新鮮度無損測定
CSTR:
作者:
作者單位:

作者簡介:

通訊作者:

中圖分類號:

基金項(xiàng)目:

國家自然科學(xué)基金資助項(xiàng)目(61202188),、農(nóng)業(yè)部現(xiàn)代農(nóng)業(yè)產(chǎn)業(yè)技術(shù)體系建設(shè)專項(xiàng)資助項(xiàng)目和陜西省自然科學(xué)基金資助項(xiàng)目(2010JQ8019)


Non-destructive Detection of Freshness Grade for Apple Fruit Based on Bio-impedance Properties
Author:
Affiliation:

Fund Project:

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問統(tǒng)計(jì)
    • |
  • 參考文獻(xiàn)
    • |
  • 相似文獻(xiàn)
    • |
  • 引證文獻(xiàn)
    • |
  • 資源附件
    • |
  • 文章評論
    摘要:

    以紅富士蘋果為試材,，在室溫下貯存得到失重率0,、5%、10%,、15%和果心褐變果實(shí)，分別定義為1,、2,、3、4,、5級新鮮度,，采用LCR阻抗儀測定各等級共424個(gè)果實(shí)的14個(gè)生物阻抗參數(shù)在9個(gè)頻率點(diǎn)下的126個(gè)特征值。通過稀疏主元分析-線性分類器（SPCA-LDC）模型試驗(yàn),，得出適宜的選樣比例（訓(xùn)練樣本數(shù)與測試樣本數(shù)之比）為9∶1,，主元數(shù)達(dá)到前39～45個(gè)時(shí)分級正確率達(dá)到最大值；構(gòu)成至少39個(gè)主元的生物阻抗特征參數(shù)為44個(gè),；50次重復(fù)試驗(yàn)的分級正確率平均值為87.90%,。

    Abstract:

    Bioimpedance properties of Fuji apple fruit with different freshness were investigated. Fruit with weight loss of 0, 5%, 10%, 15% and core-browning under room temperature were chosen as samples corresponding to descending freshness grades of 1,2,3,4,5, respectively. 126 observations of 14 bio-impedance parameters under nine frequencies of total 424 fruit from each grade were measured fruit by fruit with LCR impedance meter. Data were computed by using the sparse principal component analysis-linear classifier (SPCA-LDC) model. Results indicated that classification accuracy reached to maximum stably when the ratio of training sample to test sample of 9∶1 and former 39～45 principal component (PC) were adopted. The least 39 PCs were consisted of 44 from the 126 observations. Average rate of classification accuracy reached to 87.90% within 50 test repeats. 

    參考文獻(xiàn)
    相似文獻(xiàn)
    引證文獻(xiàn)
引用本文

蔡騁,李曉龍,馬惠玲,任小林,黃良妹,曾燕春.基于生物阻抗特性的蘋果新鮮度無損測定[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2013,44(2):147-152. Cai Cheng, Li Xiaolong, Ma Huiling, Ren Xiaolin, Huang Liangmei, Zeng Yanchun. Non-destructive Detection of Freshness Grade for Apple Fruit Based on Bio-impedance Properties[J]. Transactions of the Chinese Society for Agricultural Machinery,2013,44(2):147-152.

復(fù)制
分享
文章指標(biāo)
  • 點(diǎn)擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期: 2013-02-04
  • 出版日期:
文章二維碼