基于网购森林蔬菜种苗的引种初报及相关网购建议

为引进更多森林蔬菜品种在本地区种植,通过电商平台购买各种类型的森林蔬菜种苗,累计80种次,相继开展适应性栽培试验,结果表明:共有15种森林蔬菜栽培成功,能够正常生长并繁殖。然而,从网购种苗中发现不少问题,针对相应的问题提出相关建议。

基于深度卷积神经网络的两阶段肺结节检测

针对传统肺结节检测中存在灵敏度低、假阳性高、小结节难检测的问题,提出一种基于深度卷积神经网络的两阶段肺结节检测框架。第一阶段使用特征金字塔子网提取肺部影像的多层次特征,引入多尺度区域建议子网用于在高灵敏度下检测出所有的候选结节;第二阶段设计级联卷积神经网络模型减少假阳性,通过保留分类错误样本用于重新训练模型,将多个模型结果进行投票选出最终分类结果。LUNA16数据集上的实验结果表明,所提框架灵敏度达到95.9%,检测效果优于其它算法,能够有效实现肺结节的准确检测。

校园网贷中的经济风险及对策研究

校园网贷如雨后春笋般在各大高校涌现,但同时女生裸贷、学生跳楼等新闻事件的频发,引起各方关注。本文以三峡大学为调研区域,通过问卷调查法、访谈法、分析法等对宜昌市三峡大学大学生进行调查,揭开校园网贷的黑幕,对校园网贷进行风险分析,并对大学生网贷提出一系列建议,增加对校园网贷的风险控制。

员工社会资本对其组织承诺的影响

作者通过对上海市15家企业共359名员工的调查发现,在控制了员工人口统计学变量和组织特征变量,以及分配公平和组织支持后,员工的建议网的网络特性包括网络约束和网络跨度正向影响员工对组织的情感承诺,而建议网的强联系数量和朋友网的网络特性对员工情感承诺的影响并不显著;员工朋友网的强联系数量对员工的持续承诺有显著影响,而朋友网的网络跨度、网络约束和建议网的网络特性对员工持续承诺的影响并不显著。

Managing the treatment of the patients with stable angina like a chess player： making moves considering the next move of atherosclerosis

We read the article entitled Coronary revascularization in the elderly with stable angina with interest. In the guidelines related to stable coronary artery disease, it does not exist any age-related net proposals for the patients with stable angina pectoris.

A QoS Aware Service Composition Protocol in Mobile Ad Hoc Networks

A novel decentralized service composition protocol was presented based on quality of service (QoS) for mobile ad hoc networks (MANETs).A service composition in MANETs is considered as a service path discovery in a service network.Based on the concept of source routing,the protocol integrates route discovery, service discovery and service composition and utilizes a constrained flooding approach to discover the optimal service path.A service path maintenance mechanism was exploited to recover broken service paths.Simulation experiments demonstrate that the proposed protocol outperforms existing service composition protocols.

Multi-parameter joint optimization for double-strip high-speed pantographs to improve pantograph-catenary interaction quality

The significant increase in speed of high-speed train will cause the dynamic contact force of the pantograph-catenary system to fluctuate more severely,which poses a challenge to the study of the pantograph-catenary relationship and the design of highspeed pantographs.Good pantograph-catenary coupling quality is the essential condition to ensure safe and efficient operation of high-speed train,stable and reliable current collection,and reduction in the wear of contact wires and pantograph contact strips.Among them,the dynamic parameters of high-speed pantographs are crucial to pantograph-catenary coupling quality.With the reduction of the standard deviation of the pantograph-catenary contact force as the optimization goal,multi-parameter joint optimization designs for the high-speed pantograph with two contact strips at multiple running speeds are proposed.Moreover,combining the sensitivity analysis at the optimal solutions,with the parameters and characteristics of in-service DSA380 highspeed pantograph,the optimization proposal of DSA380 was given.