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Badania teoretyczno-eksperymentalne przepływu płynu nieściśliwego przez kryzę szczelinową
Pub Date : 2017-06-30 DOI: 10.5604/01.3001.0010.4841
B. Tomaszewska
kryza Abstract. Prototype designs of orifice flowmeters are commonly used in measurements. One area which has attracted considerable interest includes slotted orifices, where a single central opening is replaced by the use of several slots. This paper reports the results of numerical and experimental research of a prototype design of a slotted orifice plate. The movement of the fluid was described with use of Reynolds equations closed by the k-ε turbulence model. The calculations were performed using ANSYS Fluent software package by consideration of the fluid flow through an orifice plate and slotted orifice with the equal β ratio = 0.5. The results of calculations are compared with the measurements. Good qualitative and quantitative conformity was obtained during the study for the C flow coefficient. It was indicated that the slotted orifice generates a considerable lower pressure drop in comparison to an orifice plate while maintaining comparable level of measurement uncertainty.
kryza抽象。孔板流量计的原型设计通常用于测量。一个引起了相当大兴趣的领域包括开槽孔,其中一个单一的中央开口被几个开槽所取代。本文报道了一种开槽孔板原型设计的数值和实验研究结果。用k-ε湍流模型封闭的雷诺方程描述了流体的运动。计算采用ANSYS Fluent软件,考虑流体在相同β比= 0.5的孔板和开槽孔板中的流动情况。计算结果与实测结果进行了比较。在研究过程中,C流量系数得到了很好的定性和定量一致性。结果表明,与孔板相比,开槽孔板产生相当低的压降,同时保持相当水平的测量不确定度。
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引用次数: 0
Traffic analysis using NetFlow and Python 使用NetFlow和Python进行流量分析
Pub Date : 2017-06-30 DOI: 10.5604/01.3001.0010.4823
V. Oujezský, T. Horváth
: This article presents an application that is used as NetFlow collector and analyzer. It is a console application created in Python language. A software analyzer detects and analyzes incoming NetFlow messages version 1 and 5 of devices that support them. The output file is a database of information and analysis of the overall UNIX time duration of reported traffic and analysis of NetFlow lifetime. The software is developed to work with Python version 3 and higher and is designed for the Windows operating system.
本文介绍了一个用作NetFlow收集器和分析器的应用程序。它是一个用Python语言创建的控制台应用程序。软件分析器检测并分析支持它们的设备版本1和版本5的传入NetFlow消息。输出文件是一个数据库,其中包含报告流量的总体UNIX时间持续时间的信息和分析,以及NetFlow生命周期分析。该软件是为Python版本3及更高版本开发的,专为Windows操作系统设计。
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引用次数: 0
Analiza logarytmicznego analogowo-cyfrowego przetwornika z sukcesywną aproksymacją z uwzględnieniem pasożytniczych pojemności 考虑寄生电容的逐次逼近对数模数转换器分析
Pub Date : 2017-06-30 DOI: 10.5604/01.3001.0010.4851
A. Szcześniak, Z. Myczuda
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引用次数: 1
Badanie parametrów gleby z terenów przywodnych
Pub Date : 2017-06-30 DOI: 10.5604/01.3001.0010.4843
Olena Nesteruk, Mirosław Łabut, Andrzej Wal
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引用次数: 0
Konstrukcja wyłącznika próżniowego na napięcie 7,2 kV
Pub Date : 2017-06-30 DOI: 10.5604/01.3001.0010.4850
A. Hejduk
The paper presents the construction of vacuum circuit-breaker 7.2 kV with electromagnetic independent drive for each pole. The drives of new construction are equipped with permanent magnets. Simulations and tests results are presented.
介绍了7.2 kV真空断路器各极电磁独立驱动的结构。新建筑的驱动器装有永磁体。给出了仿真和试验结果。
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引用次数: 0
E-LABS – ADVANCED E-LEARNING 电子实验室——先进的电子学习
Pub Date : 2017-06-30 DOI: 10.5604/01.3001.0010.4828
Jaroslaw Nowak, Mieczysław Pcian
The aim of this article is to describe the development of distance learning techniques which opened the possibilities of conducting laboratory activities. In effect there emerged e-labs used for practical activities in the form of e-learning. Laboratory devices are remotely controlled, their management is accomplished via the Internet. This article presents exemplary e-labs, where students participate in didactic activities, allowing university teachers to do research and perform experiments. Some of the presented e-labs can be used to conduct experiments for persons who are logged in as “visitor”.
本文的目的是描述远程学习技术的发展,它开启了进行实验室活动的可能性。实际上,出现了以电子学习的形式用于实践活动的电子实验室。实验室设备采用远程控制,通过Internet实现对设备的管理。本文介绍了典型的电子实验室,学生参与教学活动,允许大学教师进行研究和实验。其中一些电子实验室可用于以“访客”身份登录的人员进行实验。
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引用次数: 0
Analiza zastosowania wybranych inżynierskich narzędzi symulacyjnych do modelowania światła dziennego
Pub Date : 2017-06-30 DOI: 10.5604/01.3001.0010.4845
E. Piotrowska
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引用次数: 0
PERFORMANCE ANALYSIS OF NATIVE AND CROSS-PLATFORM MOBILE APPLICATIONS 原生和跨平台移动应用程序的性能分析
Pub Date : 2017-06-30 DOI: 10.5604/01.3001.0010.4838
P. Grzmil, M. Skublewska-Paszkowska, E. Łukasik, J. Smołka
This article presents the performance analysis of a cross-platform mobile application implemented with Xamarin and two native applications for Android and iOS platforms. The results concerning the time analysis for selected activities were compared in order to determine whether cross-platform tools are worth using in mobile application development. Native applications achieved better performance, however in some cases the cross-platform approach allows for significant development time reduction without deterioration in user experience.
本文介绍了用Xamarin实现的一个跨平台移动应用程序和两个Android和iOS平台的本地应用程序的性能分析。对所选活动的时间分析结果进行比较,以确定跨平台工具是否值得在移动应用程序开发中使用。原生应用程序实现了更好的性能,但是在某些情况下,跨平台方法可以在不影响用户体验的情况下显著减少开发时间。
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引用次数: 14
Sprawność konwersji w luminoforach YAG:Ce współpracujących z emiterami półprzewodnikowymi z zakresu UV-VIS
Pub Date : 2017-06-30 DOI: 10.5604/01.3001.0010.4844
M. Prorok
Commonly used white light emmision method utilizing LED technology depends mostly on luminophore and wavelenght 440–460 nm (blue) semicondutor emiter use. Emission of the wide visible spectrum, greenish yellow in colour, is an effect of fotoluminescence in cerium doped YAG cristal based luminophore. As the effect of fotoluminescence, radiation interferes with source radiation, resulting in white colour light with colour temperature depending on luminophore type. The article presents the research on both conversion efficency of the luminophore and the spectra response for the nondedicated forcing, realised by usage of semiconductor emitters.
常用的白光发射方法利用LED技术主要依靠发光团和波长440-460 nm的(蓝色)半导体发射体的使用。宽可见光谱的发射,颜色为黄绿色,是铈掺杂YAG晶体基发光团的光致发光效应。由于光致发光的作用,辐射干扰光源辐射,产生白色光,其色温取决于发光团的类型。本文研究了利用半导体发射体实现非专用强迫时发光团的转换效率和光谱响应。
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引用次数: 0
Investment profitability analysis of an On-grid photovoltaic system 并网光伏系统投资收益分析
Pub Date : 2017-06-30 DOI: 10.5604/01.3001.0010.4835
P. Szpulak, S. Paszkiel, S. Wawrzyniak, M. Gryszpiński
The potential of the solar energy sector is starting to become increasingly important. The possibility to produce electrical power for household needs, as a result of an investment in photovoltaics is gaining popularity, and storing its surplus in a power grid and settlement of its consumption on the basis of an annual balance, allows to limit electricity bills to the minimum. The implementation stage, which promotes investing in solar renewable energy for own household needs was introduced by the new Act on RES, promoting the prosumer On-Grid system. The paper focuses on presenting the analysis of profitability of installing photovoltaic On-grid systems.
太阳能领域的潜力正开始变得越来越重要。由于对光伏发电的投资,为家庭需要生产电力的可能性越来越受欢迎,并将其剩余电力储存在电网中,并根据年度余额结算其消费,从而可以将电费限制在最低限度。新的可再生能源法案引入了促进投资太阳能可再生能源以满足家庭需求的实施阶段,促进了产消并网系统。本文着重分析了安装光伏并网系统的盈利能力。
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引用次数: 1
期刊
Informatics, Control, Measurement in Economy and Environment Protection
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