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The effect of Common Cuckoo parasitism on the annual productivity of a host population

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Avian Research 2024年第2期15卷 287-291页

作者： Alfred trnka Department of Biology University of TrnavaPriemyselna 491843TrnavaSlovakia

Avian interspecific brood parasitism is an excellent system for studying coevolutionary processes in nature because brood parasites directly affect host reproductive *** research on avian brood parasitism has,therefore,focused primarily on specific host anti-parasite behaviours and parasite ***,the population-level consequences of brood parasitism for host species are poorly *** study investigated the effect of Common Cuckoo(Cuculus canorus)parasitism on the productivity of a local population of the Great Reed Warbler(Acrocephalus arundinaceus)host in south-western Slovakia.A total of 495 females nesting at the studied site successfully fledged 1321 of their own young and 63 young of the Common Cuckoo over the course of 15 years(2008-2022),and the annual rate of successful parasitism ranged from 18% to 44% over this *** predicted,higher rates of successful cuckoo parasitism significantly reduced the annual productivity of the local Great Reed Warbler population,and its contribution to decreased host reproductive success was at about the same rate as overall nest failure caused by predation and other environmental *** a heavily parasitized population was probably maintained by immigrants from other populations and density-dependent selection,which is also consistent with source-sink ***,further long-term studies monitoring parasitized populations are required to confirm these findings.

关键词： Acrocephalus arundinaceus Cuculus canorus Great Reed Warbler Population growth Reproductive success

The Retraining Churn Data Mining Model in DMAIC Phases

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通讯和计算机（中英文版） 2013年第8期10卷 1063-1069页

作者： andrej trnka Department of Mass Media Communication Faculty of Mass Media Communication University of SS. Cyril and Methodius Trnava917 01 Slovak Republic

Six Sigma is a rigorous, focused, and highly effective implementation of proven quality principles and techniques. A company"s performance is measured by the sigma level of their business processes. Traditionally companies accepted three or four sigma performance levels as the norm. The Six Sigma standard of 3.4 problems-per-million opportunities is a response to the increasing expectations of customers. DMAIC is an acronym for five phases of Six Sigma methodology: Define, Measure, Analyze, Improve, Control. This paper describes possibility of using Bayesian Network for retraining data mining model. Concrete application of this proposal is in the field of the churn. Churn is a derivation from change and turn. It can be defined as a discontinuation of a contract. Data mining methods and algorithms can predict behavior of customers. We can get better results using Six Sigma methodology. The goal of this paper is proposal of implementation churn (with Bayesian network) to the phases of Six Sigma methodology.

关键词：数据挖掘模型客户流失培训六西格玛贝叶斯网络水平测量业务流程传统企业

Revisiting the thermal ageing on the metallised polypropylene film capacitor:from device to dielectric film

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High Voltage 2023年第2期8卷 305-314页

作者： Yushuang He Feipeng Wang Guoqiang Du Lei Pan Kaizheng Wang Reimund Gerhard Ronald Plath Pawel Rozga Pavel trnka State Key Laboratory of Power Transmission Equipment and System Security and New Technology Chongqing UniversityChongqingChina Faculty of Electrical Engineering Kunming University of Science and TechnologyKunmingChina Soft Transducer Materials and Systems Universität PotsdamPotsdamGermany Faculty IV Electrical Engineering and Computer Science Technische Universität BerlinBerlinGermany Institute of Electrical Power Engineering Lodz University of TechnologyLodzPoland Faculty of Electrical Engineering University of West BohemiaPilsenCzech Republic

Metallised polypropylene film capacitors(MPPFCs)are widely used in power electronics and are generally degraded by elevated *** work aims to determine the relationships between the structural changes of MPPFC and the microstructural variations of the PP film during the thermal ageing of MPPFC at 100℃ for 38 *** capacitance of MPPFC has a slight decrease during thermal ***,the breakdown voltage of the MPPFC decreases by 39.4%by the *** partial discharge(PD)number of MPPFC increases linearly with ageing *** tear-down analysis of the MPPFC reveals that the molecular structure of the PP film has not been altered but has led to molecular chain scission and the generation of some polar fragments/***,the relative permittivity of the PP films rises as the ageing time ***,thermal ageing causes the conversion of aluminum to alumina in the metallised electrode,which is hydrophilic for polar groups and leads to an adhesion effect between the metallised electrodes and the PP *** angle measurements prove that the surface hydrophilicity of the PP sample increased after thermal ***,the PD/breakdown voltage in the MPPFC increases/decreases due to the uneven adhesion of the metallised PP film.

关键词： film thermal ageing

Insulation System of Power Transformers Behavior Comparison of Mineral Oils and Natural Ester Dielectric Fluids

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Journal of Energy and Power Engineering 2010年第12期4卷 51-56页

作者： R. Polansky P. Prosr V Mentlik J. Pihera P. trnka Department of Technologies and Measurement Faculty of Electrical Engineering University of West Bohemia Univerzimi 26 30614 Pilsen Czech Republic

Paper deals with a comparison of selected properties of several vegetable oil representatives along their accelerated thermal ageing at the temperature of 90 ℃. These properties are compared to two widely used and commercially available mineral transformer oils. A combined insulating system （an oil-paper system） was created with the usage of mentioned oils for measurement purposes. Dissipation factor, capacity and volume resistance are characteristics measured along a thermal ageing of the oil-paper systems. Infrared spectroscopy was used as an additional method. After 1,000 hours of ageing, the dissipation factor of all systems based on vegetable oils did not exceed the value of 0.015. The volume resistance of systems containing mineral oils was approx, twice as high as the volume resistance of those with vegetable oils. The capacity on the other hand was slightly lower in the case of mineral oils application. An experiment also showed that the paper combined with the vegetable oil dries more quickly than in combination with the mineral oil. Infrared spectroscopy has not shown any expressive changes in the chemical structure of aU tested oils yet （up to 1,000 hours of ageing）.

关键词： Power transformer ecosystem biodegradable oils electrical properties.

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一台25年历史的板坯连铸机的改进

中国冶金 2005年第6期15卷 21-22页

作者： E.Reichel K.trnka 奥钢联工程技术公司奥钢联工业服务公司巴西分公司

通过实施防止设备早期故障的方案来延长老连铸设备的使用寿命并提高产量。奥钢联工业服务公司巴西分公司执行的一项提高连铸机性能的维护合同,使用户的设备使用寿命得到显著改善,而其除了支付按吨钢产量固定费率计算的维修费用外,无需... 详细信息

通过实施防止设备早期故障的方案来延长老连铸设备的使用寿命并提高产量。奥钢联工业服务公司巴西分公司执行的一项提高连铸机性能的维护合同,使用户的设备使用寿命得到显著改善,而其除了支付按吨钢产量固定费率计算的维修费用外,无需支出其他任何费用。

关键词：板坯连铸机维护

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捷克的结核病防治工作及展望

中国防痨杂志 1982年第3期 43-44页

作者： L.trnka J.Trefny 王忠仁

捷克的防痨工作已有80年的历史,和欧洲其它国家一样,捷克的结核病防治工作在第二次世界大战以后,作为全国统一的卫生工作的一部份而发展着。目前的工作系统包含发现及搜集资料及制订工作计划,还包括规划的实施及不同方法的效率与影响流... 详细信息

捷克的防痨工作已有80年的历史,和欧洲其它国家一样,捷克的结核病防治工作在第二次世界大战以后,作为全国统一的卫生工作的一部份而发展着。目前的工作系统包含发现及搜集资料及制订工作计划,还包括规划的实施及不同方法的效率与影响流行情况因素的评价。因而形成结核病监测的基本体系。结核病工作结核病防治的目标是切断传染途径,防止感染及发病,为此,防治规划中包括予防措施(卡介苗与化学预防)主动与被动发现病人及治疗病人。

关键词：结核病防治痰菌阳性复阳菌阳卡介苗接种捷克

停止接种卡介苗六年的经验——3.在未接种人群中结核菌的传播

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国际结核病与肺部疾病杂志 1996年第1期 29-32页

作者： D.Daková. L.trnka E.vandová 屠德华 Institute of Chest Diseases Prague National Institute of Public health Praguethe Czech Republic

背景:自1986年起在三分之一的捷克共和国内(每年3万新生儿)除结核病高危险的婴儿外,停止新生儿卡介苗普种。目的:在代表生活于良好社会经济条件下的未接种卡介苗儿童中评价了结核菌传播和感染的危险性。设计:1986-1992年每间隔两年进行... 详细信息

背景:自1986年起在三分之一的捷克共和国内(每年3万新生儿)除结核病高危险的婴儿外,停止新生儿卡介苗普种。目的:在代表生活于良好社会经济条件下的未接种卡介苗儿童中评价了结核菌传播和感染的危险性。设计:1986-1992年每间隔两年进行结核菌素试验,在184648名儿童中283名被感染。结果:新感染率是低的(0.04％)。1岁以下儿童很少发生感染,2-3岁儿童感染率最高。仅仅一半的最小儿童和10％较大儿童家庭内发现传染源。其余儿童必须考虑偶然接触到的家庭外的传染源,但接触和传播的方式未能查明。使结核病传播的唯一因素是高密度人群。结论:在稳定人群没有明显危险因素的儿童中新感染率是低的,已查明的结核病传染源是罕见的。儿童通过偶然接触他们家庭外结核病例而被感染。生活在太拥挤的工业住宅区是造成未接种卡介苗儿童新感染的不利因素。

关键词：接种卡介苗儿童感染结核菌素试验未接种传染源结核病例新感染率人口密度结核感染波希米亚

停止接种卡介苗六年的经验——2.卡介苗普种的费用与受益

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国际结核病与肺部疾病杂志 1996年第1期 24-28页

作者： L.trnka D.Daková. E.vandová 王撷秀 Institute of Chest Disease.Prague National Institute of Public Health.Prague.the Czech Republic

1986年捷克共和国在选定的区域内取消了强制性卡介苗普种。观察到的0-6岁儿童结核年感染率低于0.1％,而结核年发病率为7/10万。未接种儿童中增加的结核病例表明,接种卡介苗的保护作用为80％。受益分析证实,接种卡介苗的优点和缺点持平... 详细信息

1986年捷克共和国在选定的区域内取消了强制性卡介苗普种。观察到的0-6岁儿童结核年感染率低于0.1％,而结核年发病率为7/10万。未接种儿童中增加的结核病例表明,接种卡介苗的保护作用为80％。受益分析证实,接种卡介苗的优点和缺点持平。未接种儿童发生结核病的数目是如此之少,没有必要大量应用卡介苗。不接种的重要优点是保留了结核菌素试验的流行病学和诊断价值。结素试验与预防性化疗结合仍然是使我们能够控制受感染者的重要工具。

关键词：卡介苗接种接种卡介苗儿童结核病例未接种结核分支杆菌结核菌素试验受益分析非结核分支杆菌病

停止接种卡介苗六年的经验——1.年结核感染率和结核病发病率

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国际结核病与肺部疾病杂志 1996年第1期 19-23页

作者： L.trnka D.Daková. E.vandová 张立兴 Institute of Chest Disease National Institust of Public Health PragueThe Czech Republic

捷克斯洛伐克于40年前开始应用卡介苗接种规程,当时结核病流行情况与现在有明显差别。于1986年在一个选择的地区内,除高发结核病人群和家长要求接种外,停止新生儿强制性普种卡介苗。本研究的目的是确定在165 854名新生儿中,经六年随访... 详细信息

捷克斯洛伐克于40年前开始应用卡介苗接种规程,当时结核病流行情况与现在有明显差别。于1986年在一个选择的地区内,除高发结核病人群和家长要求接种外,停止新生儿强制性普种卡介苗。本研究的目的是确定在165 854名新生儿中,经六年随访观察,年结核感染率和感染儿童中发病率。0-6岁儿童中平均年结核感染率是低的(0.046％)。未发现增加年感染率的因素。31名儿童诊断为原发性结核(7/10万人年),相当于15.5％感染儿童从感染到疾病的发病率。大部分病人无病状和病情轻微,均为定期检查发现。该研究结果推荐可把普种卡介苗改为选择性高危险新生儿接种。同时应考虑涉及到移民,生活条件的社会和经济方面,和群众以及医务人员对接种的态度。

关键词：结核菌素试验接种卡介苗结核感染率卡介苗接种儿童结核病发病率分支杆菌感染年感染率捷克共和国分支杆菌病