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Hierarchical Hybrid Control Systems

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Hierarchical Hybrid Control Systems

1997年中国控制会议

作者： Peter e．Caines Department of electrical engineering and Centre for Intelligent Machines McGill University 3480 University St MontrealQuebecCanada H3A 2A7

＜正＞In （[12],[2],[3]） the notion of dynamical consistency was extended to hybrid systems so as to define the set of dynamically consistent hybrid partition machines Mπ, π∈II, associated with a given continuous system S. This theory includes the notions of hybrid between-block （HBBC） and in-block controllable （HIBC） partition machines, lattices HIBC（S） of （HIBC） partition machines, and hierarchical hybrid feedback control systems. In this paper, a brief summary of the elements of this theory is presented, and the robustness properties of a given partition machine Mπ with respect to deformations of the boundaries of the blocks of π are outlined. An application to the hybrid control of an underactuated double pendulum system is then sketched.

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来源： cnki会议评论

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合成地震记录的改进方法讨论

石油地球物理勘探 2001年第4期36卷 495-498,507页

作者：陈裕明李晶周亚同成都理工学院西安交通大学

本文首先叙述了合成地震记录制作的一般方法，并由此出发讨论了合成地震记录的改进方法，提出了三个方面的改进意见：①在做合成记录之前要进行测井资料、地震资料的基准面校正和声波时差校正等基础工作；②采用变频的理想子波；③在... 详细信息

本文首先叙述了合成地震记录制作的一般方法，并由此出发讨论了合成地震记录的改进方法，提出了三个方面的改进意见：①在做合成记录之前要进行测井资料、地震资料的基准面校正和声波时差校正等基础工作；②采用变频的理想子波；③在求取反射系数时摈弃均匀采样的算法，而改用非均匀采样算法。实际资料实验表明，用改进后的方法合成井旁地震道不但在精度上有了很大的提高，而且简单实用。

关键词：合成地震记录地震资料反射系数非均匀采样地震勘探

AR模型样本插值及其分析——我国2002年财政收入增长速度预测

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四川工业学院学报 2003年第1期22卷 79-82页

作者：李旭东张永相四川工业学院计算机科学与工程系四川成都610039 四川工业学院机械工程与自动化系四川成都610039

本文作者在AR建模的样本量不足时采用分段线性、分段二次抛物线插值、随机插值三种方法 ,扩大建模样本量 ,并以 195 2年～ 2 0 0 0年我国财政收入增长速度为原始样本 ,按上述方法进行AR建模与逐步预测比较。结果表明 :用插值法有利于提... 详细信息

本文作者在AR建模的样本量不足时采用分段线性、分段二次抛物线插值、随机插值三种方法 ,扩大建模样本量 ,并以 195 2年～ 2 0 0 0年我国财政收入增长速度为原始样本 ,按上述方法进行AR建模与逐步预测比较。结果表明 :用插值法有利于提高预测精度 ,特别是 ,用二次抛物线插值 ,可以大大减少AR模型的参数个数。按此方法预测的我国 2 0 0 2年财政收入增长速度将为 15 44 %左右。

关键词： 2002年预测 AR模型样本插值可信度财政收入增长速度中国

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图像的二维混合迭代加密识别

山东大学学报（工学版） 2003年第6期33卷 681-684页

作者：卢昌荆史开泉三明高等专科学校计算机科学系福建三明365004 山东大学数学与系统科学学院山东济南250100

作者曾给出图像的一维迭代加密识别的讨论和椭圆曲线的应用 ;利用已有的结果 ,给出图像的二维混合迭代加密识别和椭圆曲线的应用 .对于一类重要的图像 ,使用特殊的算法得到横向特征图 ,纵向特征图 ,采用本文给出的研究使图像在传递... 详细信息

作者曾给出图像的一维迭代加密识别的讨论和椭圆曲线的应用 ;利用已有的结果 ,给出图像的二维混合迭代加密识别和椭圆曲线的应用 .对于一类重要的图像 ,使用特殊的算法得到横向特征图 ,纵向特征图 ,采用本文给出的研究使图像在传递中获得更好的安全性 .这里给出的研究比以前给出的研究具有更多的优点 .给出二维混合迭代加密识别的应用 .二维混合迭代加密识别有效的抵御对图像的攻击。

关键词：图像的二维特征混合迭代加密椭圆曲线加密-解密算法应用

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试色糊剂对牙齿双层烤瓷贴面颜色的影响

南京医科大学学报（自然科学版） 2002年第3期22卷 200-202页

作者：章非敏牟雁东赵云凤 Michael e Razzoog 四川大学华西口腔医学院修复科美国密歇根大学牙学院 annarbormi48109

目的:应用修复牙饰面瓷后的氧化铝瓷贴面技术,对所结合的3个颜色试色糊剂的颜色变化进行观察。方法:15个氧化铝圆盘堆加维他比色A1、A2和B4的饰面瓷,底质上覆盖饰面后的氧化铝圆盘,并在其间隙加入3种试色糊剂,测量并计算颜色差异。结果... 详细信息

目的:应用修复牙饰面瓷后的氧化铝瓷贴面技术,对所结合的3个颜色试色糊剂的颜色变化进行观察。方法:15个氧化铝圆盘堆加维他比色A1、A2和B4的饰面瓷,底质上覆盖饰面后的氧化铝圆盘,并在其间隙加入3种试色糊剂,测量并计算颜色差异。结果:饰面后的氧化铝圆盘未加入试色糊剂和加入亮色试色糊剂、暗色试色糊剂后,存在的差异具有显著性(P0.05)。结论:试色糊剂对双层烤瓷贴面的颜色产生了可觉察的颜色变化。

关键词：烤瓷贴面氧化铝核试色糊剂颜色

Stem taper functions for Betula platyphylla in the Daxing’an Mountains,northeast China

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Journal of Forestry Research 2021年第2期32卷 529-541页

作者： Muhammad Khurram Shahzad Amna Hussain Harold eBurkhart Fengri Li Lichun Jiang Key Laboratory of Sustainable Forest ecosystem Management-Ministry of education School of ForestryNortheast Forestry UniversityHarbin 150040People’s Republic of China Department of Forest Resources and environmental Conservation(MC 0324) Virginia Tech310 West Campus DriveBlacksburgVA 24061USA

Accurate prediction of stem diameter is an important prerequisite of forest *** this study,an appropriate stem taper function was developed for upper stem diameter estimation of white birch(Betula platyphylla Sukaczev)in ten sub-regions of the Daxing’an Mountains,northeast *** commonly used taper functions were assessed using a diameter and height dataset comprising 1344 trees.A first-order continuous-time error structure accounted for the inherent *** segmented model of Max and Burkhart(For Sci 22:283–289,***://***/10.1093/fores tscie nce/22.3.283)and the variable exponent taper function of Kozak(For Chron 80:507–515,***://***/10.5558/tfc80507-4)described the data *** to its lower multicollinearity,the Max and Burkhart(1976)model is recommended for diameter estimation at specific heights along the stem for the ten *** comparison,the Max and Burkhart(1976)model was refitted using nonlinear mixed-effects ***-effects models would be used only when additional upper stem diameter measurements are available for *** in region-specific taper functions were indicated by the method of the non-linear extra sum of ***,the particular taper function should be adjusted accordingly for each sub-region in the Daxing’an Mountains.

关键词： White birch Taper function Multicollinearity Autocorrelation Nonlinear regression

多囊卵巢综合征胰岛素抵抗亚型:临床指标与发病机制

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世界核心医学期刊文摘（妇产科学分册） 2005年第1期1卷 13-14页

作者： Mor e. Zograbyan A. Saadat P. e. Mor 白符 Univ.S. California Keck Sch. Med. Los Angeles CA United States Dr.

Objective This study was undertaken to compare clinical and biochemic al charac teristics of the insulin resistant (IR) and non-IR subphenotypes of polycystic ovary syndrome (PCOS). Study design Infertile PCOS women were classified as IR ( n=32) or non-IR(n=46) on the basis of fasting glucose and insulin levels. The i ncidence of acanthosis nigricans (AN), hirsutism, and ovulation in response to c lomiphene citrate (CC) was compared between the 2 groups, along with serum level s of gonadotropins, and sex steroids. Blood samples from 28 PCOS patients and 8 controls were analyzed by enzymatic immunoassay for autophosphorylated insulin r eceptor (APIR) and total insulin receptor (TIR) content. Results Insulin resista nce was associated with obesity (odds ratio esistance to CC (OR=5.0, P ean levels of LH, LH/FSH ratios, and testosterone were lower in women with IR (11.5 ±6.8mIU/mL, 2.0 ±1.0, and 56.6 ±29.0 ng/dL, respectively) compared with women without IR (15.0 ±13.4 mIU/mL, 2.4 ±1.5, and 72.5 ±29.8 ng/dL, respectively) (P ean APIR/TIR ratios in IR women were lower than in non-IR women (P ents with IR are more likely to be obese and have AN, hi rsutism, resistance to CC, and lower LH, LH/FSH ratios, and testosterone levels. Furthermore, IR patients appear to have defective autophosphorylation of the in sulin receptor, a key element in insulin action, and a possible mechanism for IR in PCOS.

关键词：多囊卵巢综合征胰岛素抵抗发病机制自身磷酸化黑棘皮症克罗米酚睾酮水平空腹血糖促性腺激素酶免疫分析法

屈光性角膜切削术后病毒性角膜结膜炎导致上皮下浸润

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世界核心医学期刊文摘（眼科学分册） 2005年第3期1卷 48-49页

作者： Arcieri e.S. Arcieri R.S. Franc.a e.T. RochaF.J. 陈立军 Rua Corcovado no 155 38411-092 Uberlandia Minas Gerais Brazil

Purpose. To report three cases of adenoviral keratoconjunctivitis in patients who have undergone photorefractive keratectomy and that just developed subepithe lial infiltrates. Methods. Description of patients that developed postoperative adenoviral keratoconjunctivitis after photorefractive keratectomy without influe nce in the final visual outcome. Results. All patients presented adenoviral kera toconjunctivitis 2-3 months after refractive surgery. They developed multiple p inpoint subepithelial infiltrates in six eyes, without haze development. The final uncorrected visual acuity was better or equal to 20/30. Conclusion. Although patients undergoing photorefractive ker atectomy might develop severe corneal scarring following ocular infections, such events may follow their natural evolution.

关键词：角膜切削术屈光性角膜屈光手术角膜切除术眼部感染腺病毒角膜结膜炎角膜瘢痕自然演变点样

慢性便秘与食物耐受不良:一种直肠炎导致便秘的模型

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世界核心医学期刊文摘（胃肠病学分册） 2005年第7期1卷 56-57页

作者： Carroccio A. Scalici C. Maresi e. 李翔 Medicina Interna Policlinico di Palermo Via del Vespro 141 IT- 90127 Palermo Italy Dr.

Objective. Chronic constipation in children can be linked to cow’ s milk int olerance (CMI) but the existence of a food intolerance- dependent proctitis is still debated. The aim of this study was to evaluate the histologic data in patients with food intolera nce- related constipation. Material and methods. Fifty- two consecutive patien ts (22 M, median age 4 years) with chronic constipation unresponsive to common t reatment were enrolled. All patients were put on a cow’ s milk- free diet for 4 weeks and those uncured on this diet underwent a subsequent 4- week period of oligoantigenic diet. In the patients cured on elimination diet, a subsequent do uble- blind food challenge was performed to confirm the diagnosis of food intol erance. At entry to the study, routine hemato- chemical and immunologic assays, rectoscopy, and histologic study of the rectal mucosa were performed. In the pa tients cured on elimination diet, rectal histology was repeated when they were c ured. Results. Twenty- four patients were found to be suffering from CMI and 6 from multiple food intolerance. These patients had a normal stool frequency on e limination diet, while constipation reappeared on food challenge. The condition of the remaining 22 patients did not improve on elimination diet. The patients w ith food intolerance showed a significantly higher frequency of erosions of the mucosa, number of intraepithelial lymphocytes and eosinophils, and number of eos inophils in the lamina propria. Study of the rectal mucus gel layer showed that the food- intolerant patients had a significantly lower thickness than the othe r subjects studied. In the food intolerant patients, histologic abnormalities di sappeared on elimination diet, when the patients were well. Conclusions. Food in tolerance- related constipation is characterized by proctitis with eosinophil i nfiltrate of the rectal mucosa. A reduced mucus gel layer can be considered a co ntributory factor in the pathogenesis of the constipatio

关键词：慢性便秘组织学检查便秘患者限制饮食直肠镜检排便频率嗜酸性粒细胞血生凝胶层免疫学检测