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Search Results: 1 - 10 of 10404 matches for " 闫白鹭 "
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基于神经网络和粒子群算法的遗传位点与患病信息的关联性分析
李杰,李志强,刘晓,白鹭
- , 2018, DOI: 10.13543/j.bhxbzr.2018.01.016
Abstract: 基于遗传疾病与某些遗传基因位点存在的较强关联性,并考虑到位点间存在交互作用的情形,提出了关联性最强的位点组合的筛选方法。将每个候选位点组合对应的基于神经网络的预报准确率作为评价标准,用粒子群算法(PSO)通过迭代逼近找出最优的位点组合,并与神经网络权重分析法进行比较。结果表明,由本文方法得到的位点组合预报精度更高,对患病情况有着较好的识别效果,可为遗传疾病诊断等提供参考方法。
Abstract:The method of screening the most powerful loci combinations has been studied under consideration of the interactions between loci when genetic diseases are associated with these genetic loci. In this paper, the prediction accuracy based on neural networks is taken as the evaluation criterion to find the optimal combination of loci by the particle swarm algorithm through iterative approximation. Compared with the weight analysis method, this method has higher accuracy, and has a good recognition effect for a disease, and can thus provide a reference for disease diagnosis.
一种有效求解厌恶设施选址问题的混合启发式算法
袁文燕,白鹭,吴军,李健
- , 2017, DOI: 10.13543/j.bhxbzr.2017.06.016
Abstract: 由于1-maximin模型的目标函数在每条边上是分段线性的凹函数,基于1-maximin模型的这一特点,将粒子群算法和黄金分割法有机结合起来,提出了一种求解1-maximin模型的混合粒子群-黄金分割(PSO-GS)算法。数值实验表明,PSO-GS算法求解1-maximin模型和1-maxisum模型较UnCenter和Newalgorithm算法效率高。
Abstract:The objective function of the 1-maximin model is piecewise linear and concave. Based on the characteristics of the 1-maximin model, this paper proposes a hybrid particle swarm optimization-golden section (PSO-GS) algorithm to solve the 1-maximin model effectively. Numerical experiments show that the PSO-GS algorithm solves the 1-maximin model and the 1-maxisum model more efficiently than either the UnCenter or Newalgorithm algorithms.
能谱CT对胰腺疾病的诊断价值
管莹,白鹭
- , 2016, DOI: 10.13609/j.cnki.1000-0313.2016.01.022
Abstract: 【摘要】 能谱CT在胰腺疾病的诊断和鉴别诊断中具有很大的优势,可在更低的辐射剂量下获得更清晰的图像,提高胰腺疾病的检出率,早期发现小病灶,可为胰腺疾病的定性诊断和定量评估提供更为可靠的依据。本文即对能谱CT在诊断胰腺疾病中的应用进展进行综述
肠杆菌社区获得性肺炎的临床特征和预后因素分析
The clinical characteristics and prognositic factors of community-acquired pneumonia due to Enterobacteriaceae

陈亮,刘佳,白鹭
- , 2017, DOI: 10.7507/1671-6205.201703021
Abstract: 目的 探讨肠杆菌社区获得性肺炎(EnCAP)的临床特征和影响 30 d 病死率的因素。 方法 回顾性分析我院 2010 年至 2015 年收治的 EnCAP 237 例和肺炎链球菌社区获得性肺炎(SpCAP)120 例,比较两组的人口学、基础病、临床症状体征、相关实验室检查和影像学,以及治疗和预后。单因素分析和 Logistic 回归分析影响 EnCAP 30 d 病死率的危险因素。 结果 和 SpCAP 组相比,EnCAP 组脑血管疾病(19.8% 比 8.3%)、慢性肝病(8.4% 比 1.7%)、慢性肾病(5.1% 比 0.0%)、吸入因素(11.0% 比 0.0%)比例高,PSI 分级(2.9±1.3 比 2.5±0.8)/CURB-65 评分(1.1±0.1 比 0.6±0.4)更高;意识改变(12.2% 比 0.0%)常见,血白细胞计数[(9.5±5.7)×109/L 比(10.4±4.8)×109/L]、血红蛋白[(125.0±9.0)g/L 比(135.0±15.0)g/L]、白蛋白[(32.0±8.0)g/L 比(36.0±9.4)g/L]水平低,合并胸腔积液者(30.4% 比 12.5%)更常见;在合理经验性抗感染治疗比例接近的条件下,两者临床结局类似,但 EnCAP 住院时间更长(12.0 d 比 7.0 d)。Logistic 回归分析证实血红蛋白(OR 0.087,95%CI 0.857~0.981)、合理的经验性抗感染治疗(OR 0.108,95%CI 0.011~0.151)和脓毒性休克(OR 1.700,95%CI 0.781~38.326)是影响 EnCAP 30 d 病死率的独立危险因素。 结论 EnCAP 的临床表现不同于SpCAP。脓毒性休克是 EnCAP 30 d 死亡的独立危险因素,血红蛋白与合理的经验性抗感染治疗是保护因素,能够降低 30 d 病死率。
Objective To explore clinical characteristics and risk factors for mortality of community-acquired pneumonia due to Enterobacteriaceae (EnCAP) . Methods This was a single-center, retrospective study. Baseline demographic, clinic, radiologic characteristcs, treatment and outcomes were compared between patients hospilized with EnCAP and community-acquired pneumonia due to Streptoccocus pneumoniae (SpCAP) during January 1, 2010 to December 31, 2015. A univariate and multivariate logistic regression analysis was performed to determine factors independently associated with 30-day mortality for EnCAP. Results In comparison with SpCAP, cerebrovascular disease, chronic hepatopathy, chronic renal disease, aspiration risk, confusion, pleural effusion and higher PSI risk class/CURB-65 score, lower leukocyte, hemoglobin, albumin, longer length of stay in hospital were associated with EnCAP. Multivariate logistic regression analysis demonstrated sepsis shock (OR 1.700, P=0.018, 95%CI 0.781 to 38.326), hemoglobin (OR 0.087, P=0.011, 95%CI 0.857 to 0.981) and appropriate empirical antimicrobial therapy (OR 0.108, P=0.002, 95%CI 0.011 to 0.151) were risk factor for 30-day mortality of EnCAP. Conclusions The clinical characteristics of EnCAP are different with SpCAP. Clinic physicians should pay much attention to the risk factors for 30-day mortality of EnCAP.
糖尿病患者冠状动脉病变的CT诊断
吕哲昊,白鹭
- , 2015, DOI: 10.13609/j.cnki.1000-0313.2015.10.019
Abstract: 【摘要】糖尿病(DM)是临床的常见病、多发病,心血管病变是威胁糖尿病患者生命的严重并发症,其中冠状动脉病变(CAD)最为常见,病变早期可无明显临床症状。此时,先进的影像学技术在冠状动脉病变尤其是无症状冠心病危险性评估中显示出重要的临床价值,有助于冠状动脉病变的早诊断、早治疗,对改善临床预后有重要价值。本文将针对糖尿病合并冠心病CT诊断的现状与进展进行综述
双幅单向横坡PC斜拉桥横向不平衡索力研究 Study of asymmetric cable tensions of crosswise PC cable-stayed bridge with one-way slopes
赵晓晋,贺拴海,李欣,白鹭
- , 2018,
Abstract: 采用弹性支承连续梁受力分析的方法,通过计算不同主梁边界条件、不同拉索对主梁的弹性支撑刚度及不同拉索位置下不平衡索力提供的扭矩,研究了双幅单向横坡PC斜拉桥横向不平衡索力的计算方法.结果表明,横向拉索不平衡索力对主梁产生的扭矩并不等于对应节段恒载扭矩与活载扭矩之和,在设计过程中,需在斜拉桥整体结构中对合理成桥状态索力横向差值进行专项设计;相同布置的塔梁墩固结体系斜拉桥与半漂浮体系斜拉桥横向不平衡索力差值相同;最大横向不平衡索力状态存在于悬臂施工过程中;中索横向不平衡索力差值随拉索抗拉刚度的增大而增大,但各节段横向拉索索力差值所提供主梁扭矩比例并不由各节段拉索提供的弹性支撑刚度的比例关系确定
基于点连式ATP的中低速磁悬浮信号解决方案
The solution of intermediate-low-speed maglev trainsignaling system based on the point-continuous ATP


- , 2016,
Abstract: 中低速磁悬浮作为一种新兴的交通工具,以其相对传统轨道交通的优势,发展前景广阔。本文基于设计时速100 km/h,运行间隔3分钟的中低速磁浮工程模型,信号系统采用“点连式ATP系统”。首先对中低速磁浮“点连式ATP系统”展开分析,研究本系统与传统轮轨系统及高速磁浮系统的差异,提出本系统的关键性技术是列车测速测距、列车定位、轨道占用检查及无线通信覆盖。前三项关键技术主要解决与传统轮轨系统的差异问题,无线通信覆盖方案解决与传统点式ATP系统的差异问题,从而给出一套完整的适合中低速磁悬浮的信号系统解决方案。
The newly rising means of transportation, intermediate-low-speed maglev train, has a quite broad prospect comparing to the traditional ones. Based on analysis of the point-continuous signaling system model with a 100 km/h design speed and 3-minute tracking interval, this paper firstly studies the point-continuous ATP system, offering a glimpse of the difference between this system and the traditional wheeltrack and the high-speed maglev trains. The conclusion is that the key technologies are the distance and speed measurement, train locating, track occupation detecting and wireless communication covering. The former three technologies are mainly the difference between this system and the traditional wheeltrack ones, leaving the difference between the ATP and the traditional ones to the wireless communication covering technology, and concludes with a possible technical solution for the signaling system of intermediate-low-speed maglev railway
本体的盘诘及其思想视域
A Cross-Examination of the Noumenon and Its Thinking Horizon
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Advances in Philosophy (ACPP) , 2013, DOI: 10.12677/ACPP.2013.24011
Abstract: 追求永恒是人类理性最根深蒂固的本能,形而上学研究难以回避本体论,确立本体的目的在于为人类思想提供坚实基础,然而人们对本体有着相近而又相互抵牾的观点,不同本体观念之间的盘诘暴露出本体认识的诸多悖谬,实体本体论、实践本体论、过程本体论代表了三种思维方式,其所蕴含的矛盾推动着本体论研究的深层进展,本体论绽放着新的可能性维度。
The pursuit of eternity is the most deep-rooted instinct of human reason. Metaphysical studies are difficult to avoid ontology. The purpose of the establishment of noumenon is to provide a solid foundation for thinking. However, people have similar and mutually contradictory views of noumenon. The cross-examination of different views about noumenon reveals many absurd ideas. Entity ontology, practice ontology and process ontology represent three ways of thinking. Their inherent contradictions push a deep progress in the study of ontology. In this sense, the dimension of ontology has new possibilities to be developed.
海归知识员工归国适应的影响机制研究—基于社会支持理论
A Research on Reentry of Returned Knowledge Workers—Based on Social Support Theory
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Advances in Psychology (AP) , 2014, DOI: 10.12677/AP.2014.46108
Abstract:
近些年,随着海归回国数量不断的增加,组织中针对海归知识员工的管理也成为人力资源管理中的热点问题。如何充分发挥海归人才知识传递和知识转移的作用是组织管理目前需要面临的重要问题。本文以重返文化为背景,探讨了海归知识员工的组织支持感通过归国适应对组织承诺的作用机制。基于社会支持理论,本研究将组织支持感分为经济支持感、职业支持感和适应支持感,并分别从生活环境、工作环境和沟通环境三个方面考察组织支持感的三个维度如何通过归国适应影响组织承诺。通过对216名海归知识员工的问卷调查发现,在生活环境方面,组织提供的经济支持感对海归知识员工的生活适应有显著的正向影响;在工作环境方面,组织提供的职业支持感对工作适应有显著的正向影响,并且工作适应在职业支持感和组织承诺之间起中介作用;在沟通环境方面,组织提供的适应支持感对海归知识员工的互动适应有显著的正向影响。最后,本研究针对这些研究结果进行探讨并提出相应的管理建议。
With the development of globalization, more and more students choose to find a job back home after they finish the degree study abroad. However, they find the environment of home country is not the same as that when they went abroad. They need the support from organization to readjust to the new environment. This paper is to explore how support shows effect on reentry and orga-nizational commitment in organizational environment. Based on reentry, this paper discusses how perceived organizational support affects organizational commitment through readjustment for returnees. Specifically, based on social support theory, it clarifies the perceived organizational support into financial, career and adjustment support and examines the effect on organizational commitment respectively. In this paper, it is clarified into three different environments. They are work, interaction and general environment. In work environment, it is assumed that career support from organization has positive effect on organizational commitment through work readjustment. In interaction environment, it is assumed that adjustment support from the organization shows positive effect on organizational commitment through interaction readjustment. In general environment, it is assumed that financial support from the organization shows positive effect on organizational commitment through general readjustment. As for the main effect, this paper as-sumes that financial, career and adjustment support from the organization is beneficial to their organization commitment. Data from 216 returnees show that perceived organizational support has positive effect on readjustment significantly. As for the mediation effect, the results show that career perceived organizational support has positive effect on organizational commitment through the mediation of work readjustment, while the mediation effect is not significant for interaction readjustment and general readjustment. Finally, this paper gives some suggestions on human re-source management of returned knowledge workers.
海归知识员工组织支持和主动性人格对归国适应的影响研究
A Study of the Effect of Organizational Support and Proactive Personality on Readjustment for Returnees
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Advances in Psychology (AP) , 2015, DOI: 10.12677/AP.2015.56047
Abstract:
本文以重返文化为研究背景,以海归知识员工为研究对象,探讨了组织支持和主动性人格对归国适应的影响和作用边界。本研究从生活环境、工作环境和沟通环境这三方面分别考察了组织支持和主动型人格对归国适应的直接影响。特别地,本文以特质激活理论为理论基础考察了组织支持和主动型人格的交互作用对归国适应的影响。对229名海归知识员工的调查数据显示,经济支持能够帮助他们适应生活环境;职业支持对工作环境有显著的积极作用;而适应支持有利于海归知识员工更加适应沟通环境。本研究还发现主动性人格对归国适应有促进作用,特别是当职业支持和适应支持高时,主动性人格对工作适应和互动适应的促进作用更显著。
Based on reentry research, this paper studies the effect of perceived organizational support and proactive personality on reentry adjustment for retuned knowledge workers. This paper examines the relationship between organizational support, proactive personality and reentry adjustment from general work and interaction environment. Specifically, based on trait activation theory, it ex-plores the interaction effect of organizational support and proactive personality on reentry adjust-ment. Data are collected from 229 returned knowledge workers. The results show that financial or-ganizational support, career organizational support and adjustment organizational support have significant positive effect on general adjustment, work adjustment and interaction adjustment re-spectively. Moreover, proactive personality has positive effect on reentry adjustment. Specifically, proactive personality shows more significant positive effect when financial organizational support and adjustment organizational support are high.
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