The Impact of Web Data Processing on Computer Property: A Study Based on Hadoop

Author(s):  
Xun Lu ◽  
Zhengyou Xia ◽  
Xia Zhang
2021 ◽  
pp. 000276422110216
Author(s):  
Kazimierz M. Slomczynski ◽  
Irina Tomescu-Dubrow ◽  
Ilona Wysmulek

This article proposes a new approach to analyze protest participation measured in surveys of uneven quality. Because single international survey projects cover only a fraction of the world’s nations in specific periods, researchers increasingly turn to ex-post harmonization of different survey data sets not a priori designed as comparable. However, very few scholars systematically examine the impact of the survey data quality on substantive results. We argue that the variation in source data, especially deviations from standards of survey documentation, data processing, and computer files—proposed by methodologists of Total Survey Error, Survey Quality Monitoring, and Fitness for Intended Use—is important for analyzing protest behavior. In particular, we apply the Survey Data Recycling framework to investigate the extent to which indicators of attending demonstrations and signing petitions in 1,184 national survey projects are associated with measures of data quality, controlling for variability in the questionnaire items. We demonstrate that the null hypothesis of no impact of measures of survey quality on indicators of protest participation must be rejected. Measures of survey documentation, data processing, and computer records, taken together, explain over 5% of the intersurvey variance in the proportions of the populations attending demonstrations or signing petitions.


2011 ◽  
Vol 15 (5) ◽  
pp. 1379-1386 ◽  
Author(s):  
T. Nehls ◽  
Y. Nam Rim ◽  
G. Wessolek

Abstract. Due to climate change, cities need to adapt to changing rainfall and rainwater run-off dynamics. In order to develop an corresponding process based run-off model for pavements, we had to improve the measurement technique to detect run-off dynamics in an appropriate high resolution. Traditional tipping buckets (TB) have a comparable low volume resolution, capable to quantify the highest intensities in a range of expected flows. This results in varying temporal resolutions for varying flow intensities, especially in low resolutions for small flow events. Therefore, their applicability for run-off measurements and other hydrological process studies is limited, especially when the dynamics of both small and big flow events shall be measured. We improved a TB by coupling it to a balance and called it weighable tipping bucket (WTB). This paper introduces the device set up and the according data processing concept. The improved volume and temporal resolution of the WTB are demonstrated. A systematic uncertainty of TB measurements compared to WTB measurements is calculated. The impact of that increased resolution on our understanding of run-off dynamics from paved urban soils are discussed, exemplary for the run-off and the surface storage of a paved urban soil. The study was conducted on a permeably paved lysimeter situated in Berlin, Germany. Referring to the paved surface, the TB has a resolution of 0.1 mm, while the WTB has a resolution of 0.001 mm. The temporal resolution of the WTB is 3 s, the TB detects individual tippings with 0.4 s between them. Therefore, the data processing concept combines both the benefits of the balance to measure small intensities with that of the TB to measure high flow intensities. During a five months period (July to November 2009) 154 rain events were detected. Accordingly, the TB and WTB detected 47 and 121 run-off events. The total run-off was 79.6 mm measured by the WTB which was 11 % higher than detected by the TB. 95 % of that difference can be appointed to water, which evaporated from the TB. To derive a surface storage estimation, we analyzed the WTB and TB data for rain events without run-off. According to WTB data, the surface storage of the permeable pavement is 1.7 mm, while using TB data leads to an overestimation of 47 % due to low volume resolution of the TB. Combining traditional TB with modern, fast, high resolution digital balances offers the opportunity to upgrade existing TB systems in order to improve their volume detection limit and their temporal resolution, which is of great advantage for the synchronization of water balance component measurements and the investigation of hydrological processes. Furthermore, we are able to quantify the uncertainty of flow measurements gained with traditional tipping buckets.


Author(s):  
David Japikse ◽  
Oleg Dubitsky ◽  
Kerry N. Oliphant ◽  
Robert J. Pelton ◽  
Daniel Maynes ◽  
...  

In the course of developing advanced data processing and advanced performance models, as presented in companion papers, a number of basic scientific and mathematical questions arose. This paper deals with questions such as uniqueness, convergence, statistical accuracy, training, and evaluation methodologies. The process of bringing together large data sets and utilizing them, with outside data supplementation, is considered in detail. After these questions are focused carefully, emphasis is placed on how the new models, based on highly refined data processing, can best be used in the design world. The impact of this work on designs of the future is discussed. It is expected that this methodology will assist designers to move beyond contemporary design practices.


2020 ◽  
Vol 26 (9) ◽  
pp. 93-101
Author(s):  
М. Lukiyanova ◽  

The article deals with the impact of instruments of state financial control on the management of state and municipal property. The subject of the research is methodological approaches to the classification of violations revealed during control and expert-analytical activities carried out by state, regional and municipal financial control bodies. The topic of the work is the influence of state financial control instruments on the assessment of the state and municipal property management effeciency and the prospects for their application. The aim of the work is to present the author’s position on the effectiveness of the application of methodological rules and norms during control and expert-analytical activities. As a result, the importance of the principle of independence as a separate category of activities of state and municipal financial control (audit) bodies was expanded in order to focus on its leading role. The theoretical and practical provisions in the field of state financial control over state (municipal) property were combined using the example of a new object of state financial control and audit; analyzed the classification of objects of control in terms of violations and shortcomings. As conclusions, positive opportunities and negative consequences of strict adherence to standards developed in this area, collected by the method of economic grouping, were predicted. The author has used the following research methods: substantiations of proposals in the field of state financial control in terms of assessing their impact on the state and municipal property management efficiency, a literary review of scientific methodological developments in terms of attracting, using and disposing of state and municipal property, a method of data classification with using statistical groupings


2019 ◽  
Vol 252 ◽  
pp. 03020 ◽  
Author(s):  
Emilia Bachtiak-Radka ◽  
Sara Dudzińska ◽  
Daniel Grochała ◽  
Stefan Berczyński

Digital processing of the recorded point clouds on innovative surfaces could facilitate the operator’s planning of the metrological process and give more freedom in the assessment of the surface texture. The current state of knowledge about surface characteristics, precision and quality of measurements and especially the repeatability of measurements – not only in the laboratory environment but also in the industry pose a big challenge. The paper presents research works related to the identification of the impact of the method of acquisition point clouds using digital data processing on surface texture. The main assumption of the paper was to carry out, according to the prepared plan of the experiment, the series of sample measurements with the use of the optical measuring systems AltiSurf A520 in the Laboratory of Surface Topography at the West Pomeranian University of Technology in Szczecin. The next task was to determine the impact of the digital data processing strategy in order to identify the significance of the impact (conditions and methods of filtration), which in practice largely determines the repeatability and reproducibility of the parameter values of the geometry surface structure.


Sensors ◽  
2019 ◽  
Vol 20 (1) ◽  
pp. 201 ◽  
Author(s):  
Seong-Hoon Kee ◽  
Jin-Wook Lee ◽  
Ma. Doreen Candelaria

The main objectives of this study are to develop a non-destructive test method for evaluating delamination defects in concrete by the Impact-echo test using multi-channel elastic wave data and to verify the validity of the proposed method by experimental studies in the laboratory. First, prototype equipment using an eight-channel linear sensor array was developed to perform elastic wave measurements on the surface of the concrete. In this study, three concrete slab specimens (1500 mm (width) by 1500 mm (length) by 300 mm (thickness)), with simulated delamination defects of various lateral dimensions and depth, were designed and constructed in the laboratory. Multi-channel elastic wave signals measured on the three concrete specimens were converted to the frequency-phase velocity image by using the phase-shift method. A data processing method was proposed to extract the dominant propagating waves and non-propagating waves from the dispersion images. The dominant wave modes were used to evaluate delamination defects in concrete. It was demonstrated that the surface wave velocity values were useful for characterizing the shallow delamination defects in concrete. In addition, the peak frequency of non-propagating wave modes extracted from the dispersion images gives information on the lateral dimensions and depths of the delamination defects. This study also discussed the feasibility of combined use of the results from propagating and non-propagating wave modes to better understand the information on delamination defects in concrete. As will be discussed, the multi-channel elastic wave measurements enable more accurate, consistent, and rapid measurements and data processing for evaluation of delamination defects in concrete than the single-channel sensing method.


2009 ◽  
Vol 2 (3) ◽  
Author(s):  
Melissa De Zwart

The recent (February 2009) defection of a key member of the Band of Brothers Alliance in EVE caused a major restructure of the EVE gaming environment, much to the joy of the game’s operators, CCP games. (So much so, that many accused them of having staged an ‘inside job’ to disrupt the stranglehold of BoB). The defection was made possible through the design of the game and the need to maintain corporate structures to effect control over key regions. The defection of Haargoth was catastrophic to BoB, destroying years of player time and significant real money investment in game time. Some calls were made for CCP to intervene, but such action would have contradicted the game character of EVE itself as a piractical world. If such conduct had occurred in the corporate world of any RL nation, clear demands for regulatory control would have been acceded to (see, for example, the demand for repayment of AIG bonus payments made to executives). In another virtual world, World of Warcraft, the operators Blizzard, have recently announced (March 2009) a new policy regarding add-ons, which will affect the way in which many keen WoW participants will interact with the game. This follows on from the litigation regarding Glider, which divided the WoW community regarding what is acceptable in terms of mods and automated play. Again response to the add-on policy has attracted heated debate in the dedicated WoW community. The relationship between practice and theory regarding treatment of mods and add-ons by Blizzard has been inconsistent and frustrating for many keen WoW players. The legal status of mods and add-ons in other worlds remains unclear. Finally, the operators of Entropia have just announced that they have been granted a banking licence in Sweden. It remains to be seen how this will impact on the gaming experience and the regulation of that experience by external authorities. This article will consider the important influence of game design and game governance on the nature of the player’s experience. It will also compare social world environments, such as Second Life. It will consider increased calls for inworld regulation and the impact this would have on the nature of the players’ experience. It will explore the need to acknowledge the particular nature of the world under consideration and discuss ways how this might be respected and protected. It will consider the relationship between real world laws, inbuilt game standards and the players’ own negotiated understanding of the world with which they are engaged and how this may change over time, according to gaming experiences and investment in the game world. It will explore the relationship between the underlying governance structures of the virtual world and the developing nature of that world and make suggestions regarding the possible effects of law reform and standards setting in this area. This paper will build on work I have been doing on virtual world governance, such as ‘Legal Issues in Virtual Worlds: Governance and Intellectual Property’, a presentation to the OECD Workshop on Innovation and Policy for Virtual Worlds, 11 March 2009, http://www.oecd.org/dataoecd/54/2/42347580.pdf; my contribution to the ENISA Position Paper: Virtual Worlds, Real Money, Security and Privacy in Massively- Multiplayer Online Games and Social and Corporate Virtual Worlds, November 2008, http://www.enisa.europa.eu/doc/pdf/deliverables/enisa_pp_security_privacy_virtualworlds.pdf; ‘The dark side of online games : fraud, theft and invasion of privacy’, (2009) 11(9) Internet Law Bulletin 147-151 and ‘Governance and the Global Metaverse,’ (with David Lindsay) presented at the Cybercultures Conference , Salzburg, 15 March 2009, http://www.inter-disciplinary.net/critical-issues/cyber/cybercultures/conference-programme-abstracts-and-papers/session-8-cyber-policy-and-cyber-democracy/.


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