scholarly journals Data analysis of Einstein-Podolsky-Rosen-Bohm laboratory experiments

Author(s):  
H. De Raedt ◽  
F. Jin ◽  
K. Michielsen
2010 ◽  
Vol 14 (2) ◽  
pp. 369-382 ◽  
Author(s):  
M. G. Kleinhans ◽  
M. F. P. Bierkens ◽  
M. van der Perk

Abstract. From an outsider's perspective, hydrology combines field work with modelling, but mostly ignores the potential for gaining understanding and conceiving new hypotheses from controlled laboratory experiments. Sivapalan (2009) pleaded for a question- and hypothesis-driven hydrology where data analysis and top-down modelling approaches lead to general explanations and understanding of general trends and patterns. We discuss why and how such understanding is gained very effectively from controlled experimentation in comparison to field work and modelling. We argue that many major issues in hydrology are open to experimental investigations. Though experiments may have scale problems, these are of similar gravity as the well-known problems of fieldwork and modelling and have not impeded spectacular progress through experimentation in other geosciences.


Work ◽  
2021 ◽  
Vol 68 (s1) ◽  
pp. S251-S255
Author(s):  
Amalia Vanacore ◽  
Antonio Lanzotti ◽  
Chiara Percuoco ◽  
Agostino Capasso ◽  
Bonaventura Vitolo

BACKGROUND: Aircraft seating comfort has a significant impact on passenger on-board experience. Its assessment requires the adoption of well-designed strategies for data collection as well as appropriate data analysis methods in order to obtain accurate and reliable results. OBJECTIVES: This paper focuses on the assessment of aircraft seating comfort based on subjective comfort responses collected during laboratory experiments and taking into account seat features and passenger characteristics. METHODS: The subjective comfort evaluations have been analyzed using a model-based approach to investigate the relationship between overall seating comfort and specific seat/user characteristics. RESULTS: The results show that the overall seating comfort perception is significantly influenced by the thickness of the seat pan, the backrest position (upright or reclined), the age of the passenger and the passenger perception of being comfortably supported at the lumbar region. CONCLUSIONS: The adopted model-based approach allows the analysis of subjective seating comfort data taking into account their ordinal nature as well as the dependency between evaluations provided by the same subject.


2016 ◽  
Vol 23 (02) ◽  
pp. 1650010 ◽  
Author(s):  
H. De Raedt ◽  
K. Michielsen

We review an event-based simulation approach which reproduces the statistical distributions of quantum physics experiments by generating detection events one-by-one according to an unknown distribution and without solving a wave equation. Einstein-Podolsky-Rosen-Bohm laboratory experiments are used as an example to illustrate the applicability of this approach. It is shown that computer experiments that employ the same post-selection procedure as the one used in laboratory experiments produce data that is in excellent agreement with quantum theory.


2019 ◽  
Vol 31 (3) ◽  
pp. 354-360 ◽  
Author(s):  
Wojtek Przepiorka

Lindenberg et al. report experimental evidence for the effect of hedonic shifts on subjects’ propensity to engage in moral hypocrisy. Hedonic shifts are changes in individuals’ cognitive states that can be triggered by cues in these individuals’ environments such as ambient smells. Individuals in a hedonic cognitive state aim at doing what makes them feel good. Hence, the authors hypothesize that (1) individuals who are in a bad mood and are put in a hedonic cognitive state will more often take a moral stance and (2) when asked to act morally refuse to do so, (3) especially when the costs for acting morally are high, and (4) even if the moral issue upon which they are asked to act is unrelated to the issue pertaining to the moral stance they took. The authors test these four hypotheses in two laboratory experiments and conclude that their results support these hypotheses. In this comment, I highlight design, measurement, and data analysis issues arising with the two studies that challenge this conclusion. Throughout my comment, I give some indications as to how a laboratory experiment testing these four hypotheses could be designed and conducted.


2006 ◽  
Vol 43 (2) ◽  
pp. 210-216 ◽  
Author(s):  
G H Lei ◽  
Y B Ai ◽  
J Y Shi

The conventional method of inclinometer data analysis computes the displacement components in two mutually orthogonal directions separately by using corresponding readings measured in individual directions. It is shown in this note that calculation errors, although insignificant, are induced when this method is used to interpret data measured by pendulum-type inclinometers, which are widely used as probe inclinometers in engineering practice. The inclinometer readings measured in the two directions are correlative, and they are dependent on both the angle of the inclinometer probe axis inclined to the gravity vertical and on the azimuth angle at which the probe movement direction deviates from one of the two directions. The displacement component in each direction can be interpreted more accurately by simultaneously using the tilt angles in both directions measured directly by the inclinometer probe. Relationships between the actual displacement components, the resultant displacement, the azimuth angle, and the tilt angles are derived and verified by laboratory experiments. A refined calculation procedure is proposed for interpreting the pendulum-type inclinometer readings, and the errors induced in the conventional method are analyzed.Key words: deformation, field instrumentation, ground movements, monitoring.


2021 ◽  
Author(s):  
Helen Novikova ◽  
Mariia Trimonova

<p>Recently, attention to the development of low-permeable reservoirs has been increasing. More and more attention is being paid to the search for various methods of data analysis of mini-hydraulic fracturing and computer modeling of the hydraulic fracturing process, which will simplify the entire procedure of hydraulic fracturing in a real field and reduce financial costs. The increase in interest is due to the fact that the results of the hydraulic fracturing are used to determine some important characteristics of the formation.</p><p>One of such important characteristics of a reservoir is permeability. In the course of this study, the data obtained from a series of laboratory experiments on mini-hydraulic fracturing were processed. The main goal was to determine the value of permeability of the medium in which the hydraulic fracture was formed and propagated, with the help of various standard methods. The second objective of the study was to compare the calculated values with real ones known from preliminary conducted laboratory experiments.</p><p>In the frame of the work, the laboratory experiments on mini-hydraulic fracturing were carried out using a special experimental setup [1]. The uniqueness of this experimental setup lies in the fact that it allows to perform a triaxial loading of the sample under consideration. The sample material was selected according to the similarity criteria between the fracturing process in the experiment and the fracturing process in the real field. These features make it possible to approximate the conditions of a laboratory experiment on hydraulic fracturing to real field conditions.</p><p>As a result, pressure-time dependencies were obtained for series of laboratory experiments. Further analysis of the curves was carried out in the time period after fracture closure.</p><p>In the course of data analysis, the flow regimes in the medium during the time period after fracture closure were estimated. After that, the values of permeability were calculated using approach introduced by Nolte [2, 3]. The permeability values were also estimated using the method proposed by Horner [4] and later modified by Nolte [5]. All theoretically obtained values were compared with real values of permeabilities.</p><p><strong>Acknowledgements</strong></p><p>The reported study was funded by RFBR, project number 20-35-80018, and state task 0146-2019-0007.</p><p><strong>References</strong></p><p>1. Trimonova M., Baryshnikov N., Zenchenko E., Zenchenko P., Turuntaev S.: “The Study of the Unstable Fracture Propagation in the Injection Well: Numerical and Laboratory Modelling,” (2017).</p><p>2. Nolte, K. G.: “Determination of Fracture Parameters from Fracturing Pressure Decline,” Las Vegas (1979).</p><p>3. Nolte, K. G.: “A General Analysis of Fracturing Pressure Decline With Application to Three Models,” (1986).</p><p>4. Horner, D. R.: “Pressure Build-Up in Wells,” Netherlands (1951).</p><p>5. Nolte, K. G., Maniere, J. L., Owens, K. A.: “After-Closure Analysis of Fracture Calibration Tests,” Texas (1997).</p>


2019 ◽  
pp. 21-31
Author(s):  
Drikben Eka Putra Nggadas ◽  
Ariswan Ariswan

The study aimed to examine differences in the mastery of physics concepts between students are learning by ICT based-teaching and laboratory experiments based-teaching. The particular research was quasi-experiment with a pretest-posttest design with nonequivalent groups. The sample size was three classes selected from the population of students on class X of SMA N 4 Kupang. The data collection method used multiple choice questions tests. Data analysis used independent samples t-test using SPSS 16.0 for Windows. The results of data analysis using t-test at a significance level of 0.05 indicated that there was a difference in the average mastery of physics concepts between students are learning by ICT based-teaching and the laboratory experiments based-teaching. The mean score of the mastery of physics concept on students are learning by ICT based-teaching was higher than students are learning by laboratory experiments based-teaching.


2009 ◽  
Vol 6 (5) ◽  
pp. 6581-6610
Author(s):  
M. G. Kleinhans ◽  
M. F. P. Bierkens ◽  
M. van der Perk

Abstract. From an outsider's perspective, hydrology combines field work with modelling, but mostly ignores the potential for gaining understanding and conceiving new hypotheses from controlled laboratory experiments. Sivapalan (2009) pleaded for a question- and hypothesis-driven hydrology where data analysis and top-down modelling approaches lead to general explanations and understanding of general trends and patterns. We discuss why and how such understanding is gained very effectively from controlled experimentation in comparison to field work and modelling. We argue that many major issues in hydrology are open to experimental investigations. Though experiments may have scale problems, these are of similar gravity as the well-known problems of fieldwork and modelling and have not impeded spectacular progress through experimentation in other geosciences.


2020 ◽  
Vol 5 (2) ◽  
pp. 192-200
Author(s):  
Yurike Rienika Chandra ◽  
Winanda Wahana Warga Dalam

The background of this research is to test the use of software accounting in the acquisition of student accounting knowledge. The method used in this research is laboratory experiments with instruments in the form of a questionnaire given directly to respondents after solving accounting cases manually and using software accounting. The data analysis tool used in this study was SPSS. The results of the problems examined in this study are, first, solving accounting cases manually, then solving the same cases using software accounting does not increase student accounting knowledge acquisition. The second result is that there is no significant difference in the acquisition of student accounting knowledge between the manual approach and software accounting in solving accounting cases. The last result is that there is no significant difference in acquiring accounting knowledge between male and female students in using software accounting. The conclusion and implication of this research are to be able to master and benefit from technology. In this case, accounting technology, students must understand and be familiar with using this technology. Students will be aware of the importance of technology in the world of this 4.0 industrial revolution.


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