Influencing Factors on Elders Preference for Supporting: Application of an adaptive LASSO logistic Model

目的探讨adaptive LASSO; logistic回归模型在老年人养老意愿影响因素研究中的应用。方法基于厦门市60岁及以上老年人口的多阶段整群抽样调查数据,建立老年人养老意愿影响; 因素的adaptive LASSO; logistic回归模型,通过交叉验证法选择模型中的调和参数lambda;通过与全变量和逐步logistic回归结果的比较,探讨adaptive; LASSO; logistic回归模型的优势。结果共纳入1244名老年人,其养老意愿为家庭养老、社区居家养老和机构养老的比例分别为70.0%、21.1%和8.; 9%。交叉验证法选择的lambda为0.018;此时adaptive LASSO; logistic回归模型纳入的自变量为居住地、年龄、婚姻状况、文化程度、子女数、每月退休金收入、公费医疗和住院情况;; BIC和AIC分别为1931、1888,均低于全变量logistic回归(2077、1923)和逐步logistic回归(2025、1912); 。结论adaptive LASSO logistic回归模型可用于老年人养老意愿影响因素研究。老年人的养老意愿受多个因素影响。Objective This study was aimed to analyze influencing factors on elders; preference for supporting in case to provide evidence for diversified; elderly supporting. Methods This article applied an adaptive LASSO; logistic model to the multi-stage cluster sampling data of the; population aged 60 or older in Xiamen to analyze influencing factors on; elders preference for supporting. Cross validation method was used to; choose lambda for adaptive LASSO logistic model. In addition,we; evaluated the model fitting of adaptive LASSO logistic model by; comparing the BIC and AIC with full logistic model and stepwise logistic; model. Results The cross validation method resulted in lambda = 0.018; for adaptive LASSO logistic model, in which variables retained were; residence, age,marital status, education level,number of children, the; monthly pension income,medical insurance and hospitalization. BIC of; adaptive LASSO logistic model,full logistic model and stepwise logistic; model were 1931, 2077and 2025 respectively. And AIC of the three models; were 1888, 1923 and 1912 respectively. Conclusion Compared to full; logistic model and stepwise logistic model, adaptive LASSO logistic; model was the best fitting model for influencing factors on elders; preference for supporting. Adaptive LASSO logistic model could be used; to analyze influencing factors on elders preference for supporting.; There were multiple factors which influenced elders preference for; supporting.厦门大学大学生创新创业训练计划项

OPGW断股状态的光学监测技术研究

针对OPGW（光纤复合架空地线）易发生断股的现象,提出了采用布里渊光时域反射仪测量其内部光纤应变的断股检测方法。实验中将一段OPGW的两端固定在拉力机上并施加固定的拉力值,逐渐增加OPGW中断开的单丝数,记录布里渊光时域反射仪测量的光纤应变值。实验结果表明,该方法可实现对25%以上的断股区域截面积比的监测,为在线监测OPGW断股状态提供了一种新的思路

Detecting macrophage migration inhibitory factor in tissues of Larimichthys crocea with Cryptocaryon irritans disease

由刺激隐核虫(CryPTOCAryOn IrrITAnS)感染引发的“白点病“为大黄鱼(lArIMICHTHyS CrOCEA)养殖业带来重大损失,但仍未找到安全、有效的治疗方法。本研究应用免疫组织化学方法,对健康大黄鱼和患刺激隐核虫病大黄鱼肠、脾、头肾与肝组织中巨噬细胞移动抑制因子(MACrOPHAgE MIgrATIOn InHIbITOry fACTOr,MIf)蛋白进行检测,研究刺激隐核虫病大黄鱼组织中MIf的表达情况及其对预后的影响。结果表明,MIf在健康大黄鱼肠、脾、头肾、肝各组织中均无表达;MIf在刺激隐核虫病大黄鱼各组织中高表达,表达强度从弱到强依次是肠、肝、脾、头肾,MIf表达阳性率分别为54%、80%、86%、90%。推测MIf在大黄鱼刺激隐核虫病发病过程中发挥作用。Cryptocaryon irritans is a holotrichous marine ciliate protozoan that causes "white spot disease", which is one of the most devastating parasites of Larimichthys crocea in Fujian Province.No safe drug strategy has been identified to prevent and cure "white spot disease".To investigate the expression and prognostic value of macrophage migration inhibitory factor(MIF) in C.irritans diseased L.crocea tissues, MIF expression was detected by immunohistochemistry of intestine, spleen, head kidney, and liver specimens of pathologically identified and healthy L.crocea tissues.None of the negative controls reacted, but MIF staining was intense in all L.crocea tissues infected with C.irritans disease.The MIF staining rates for the intestines, liver, spleen, and head kidney were 54%, 80%, 86% and 90%, respectively.The high MIF expression levels in diseased tissues indicate that MIF plays an important role in homeostasis of C.irritans infected with L.crocea.福建省自然科学基金项目(2013J01140); 2014年福建省海洋渔业资源与生态环境重点实验室科技项目(ZK2014004); 2015年集美大学福建省大学生创新项目(201510390074); 福建省研究生教育教学改革研究项目(闽教高[2015]11号;集大研[2015]19号); 厦门南方海洋研究中心科技项目; 海洋经济发展区域示范项目(14PYY050SF03;14PYY050SF03

Bevel gear train flapping-wing aircraft

一种机械电子技术领域的锥齿轮组扑翼飞行器，包括：扑动机构、主轴和尾翼，主轴分别与扑动机构和尾翼连接。本发明能够使两个翅膀扑动频率不同，能够在飞行过程中高效地调节两个翅膀之间的扑动关系，还能够降低由于两个翅膀扑动力不同所带来的能量损耗，消除两边扑动力不平衡的影响

新疆塔里木河流域治理下坂地水库工程近坝区高陡边坡稳定性研究

工作内容主要有：近坝库区滑坡稳定性研究、未来可能破坏模式分析，滑坡在多种不利组合条件作用下的稳定性计算评价、滑坡工程处理措施研究等；坝区高陡边坡变形与稳定性研究，包括高陡边坡形态特征与岸坡结构类型研究；边坡变形的数值模拟研究；边坡稳定性的计算评价；边坡工程处理方法研究；泄水隧洞进出口边坡、引水发电洞进口、地下厂房后高陡边坡变形与稳定性研究，包括这些边坡变形特征与变形破坏模式研究；边坡变形3维数值分析、刚体极限平衡法分析。边坡的地震稳定性研究、地下厂房对高陡边坡变形与稳定性影响的数值计算分析、边坡加固措施研究。在逐渐完善的勘察和现场测试工作基础上，本报告提出的地质依据可以满足高边坡稳定性研究的要求