Device For Checking Research Articles

Presenting research as a libretto

This article details a data inscription method I have termed ethnomusical libretto. The method evolved from three years of ethnographic fieldwork examining the workplace culture and practice of the global musical theatre industry. Through the process of analysing and coding data, I began to explore the possibility of writing up my data as a libretto, as an effective way to both ‘show’ and ‘tell’ what I had seen and experienced as a participant/observer in the musical theatre industry. I also saw value for writing up ethnographic data as a libretto in order to employ it as a device for member checking. This method contributes to a thickening of data and provides not only an alternate way to conceive research findings but also an opportunity to refine and confirm research claims.

A Digital Device for Automatic Checking of Homework Assignments in the Digital Circuits Course

This paper considers a digital device for automatic checking of homework assignments in the digital circuits course. The assignment is to make a digital circuit corresponding to a given logical expression; the circuit is comprised of elementary logic gates. The process of manual testing the built circuit is very labor-intensive because checking a circuit with N inputs variables requires checking the correctness of the output variable for 2N cases. We propose automating this pro-cess with a special digital device. The device is comprised of a microcontroller connected to the circuit tested. The microcontroller is connected to a personal computer with an application written in C# for executing the main operations of the testing process. During testing, the student chooses from a database or enters the logical expression corresponding to the circuit tested. For the expression, the software generates truth tables where actual and required responses of the circuit are given. Actual circuit responses are acquired by probing the circuit via the microcontroller, and the expected values are calculated from the logical expression. The truth tables are then presented to the student with a message of whether the circuit works correctly or not. The device was integrated into the process of checking homework assignments in the digital electronics course, and it significantly sped up the process of checking homework assignment circuits, resulting in better education quality.

Robust inference in a linear functional model with replications using the t distribution

In this paper, we investigate model assessment, estimation and hypothesis testing in a linear functional relationship for replicated data when the distribution of the measurement errors is a multivariate Student t distribution. For statistical inference, we adopt the unbiased estimating equations approach. The resulting estimator is consistent and asymptotically normal; a closed form expression is also given for its asymptotic covariance matrix. A simple graphical device for model checking is proposed. We also describe how to test some hypotheses of interest on the parameter vector using the Wald statistic. A simulation study is performed to gauge the performance of the estimators and of the Wald statistic. The methodology developed in the paper is illustrated with a real data set.

A Design and Implementation of Attendance System Using Smallest Wireless Fingerprint with Arduino Yún Embedded Board

The purpose of this research is a design and implementation of a smallest wireless fingerprint device based on Arduino Yún board. This system applies for using in class attendance checking in school or university. The exper-imental of class attendance using wireless fingerprint in this research is examinations in Kasetsart University Siracha Campus, Thailand for case study. All hardware environments of this system-using platform of Arduino Yún board and Ubuntu OS apply with computer program like MySQL, JavaScript, Apache server, and wireless network for building an embedded fingerprint authentication system. Design of a new smallest wireless fingerprint in this research is small and easy to use. It has a LCD screen for show the result of identifying after users scan they fingerprint on it. This system is applying to use in class attendance. When student come in a class he or she scan his fingerprint on our device for checking and authentications. After device receive data from his fingerprint then device send this data to server using wireless network. When server get the data by device from network already, it will send this data to fingerprint authentications program for loading and checking data of fingerprint in database. If his fingerprint data is match one of data in database the server will be sent the name and information of matching fingerprint data back to LCD screen of device and show valid text on the screen and update the status of fingerprint owner to attendance system. If his fingerprint not math in all of data in database, it invalid. This research help an instructor for reduce time for checking student attendance; solve the problem about some student absent but his or her friend fake attendance for him. And in the future this device will be replacing the student ID card

Diagnostic of Manufacturing Devices Operational States by Smart-Phones Application with Use of Augmented Reality Methods

Methods and techniques of diagnostic activities have changed in last years thanks to the significant modernization of accessible hardware and software tools. In the area of usability of the technologies of augmented reality the possible innovation lies in utilization of current telecommunication devices which integrate displaying and recording unit, mini-computer and the device for location checking. The paper conceptually describes the possibilities for using of common smart-phones for purposes of detailed diagnostic of manufacturing devices and production process in the environment of engineering praxis.

A method to relate StarTrack® measurements to R50 variations in clinical linacs

The relation between the data recorded with any device for the daily checking of the behavior of a clinical linac and the reference magnitudes to be monitored may be unknown. An experimental method relating the energy stability of the electron beam measured with StarTrack® to the R50 beam quality index is proposed. The bending magnet current is varied producing a change in the exit energy window and, therefore, a modification of the R50 value. For different values of this current, the output data of StarTrack® and the R50, obtained from depth doses measured in a water phantom are determined. A linear fit between both sets of data allows the identification of the StarTrack® output that provides the best way to obtain the quality index R50, for each beam nominal energy. Using these fits, an historical datum series is used to analyze the method proposed in the daily quality control.The ouput data of the StarTrack® and the R50 values show a good linear correlation. It is possible to establish a methodology that allows the monitoring of R50 by direct use of the daily quality control data measured with StarTrack®.A method to monitor R50 in the daily quality control using the StarTrack® device has been developed. The method may be applied to similar devices in which the statistical control variable does not show a linear behavior with R50.

Inference in a structural heteroskedastic calibration model

The main goal of this paper is to study inference in an heteroskedastic calibration model. We embrace a multivariate structural model with known diagonal covariance error matrices, which is a common setup when different measurement methods are compared. Maximum likelihood estimates are computed numerically via the EM algorithm. Consistent estimation of the asymptotic variance of the maximum likelihood estimators and a graphical device for model checking are also discussed. Test statistics are proposed for testing hypotheses of interest with the asymptotic chi-square distribution which guarantees correct asymptotic significance levels. Results of simulations comprising point estimation, interval estimation, and hypothesis testing are reported. An application to a real data set is given. Up to best of our knowledge, topics such as model checking and hypotheses testing have received only scarce attention in the literature on calibration models.

An Asymptotically Pivotal Transform of the Residuals Sample Autocorrelations With Application to Model Checking

We propose an asymptotically distribution-free transform of the sample autocorrelations of residuals in general parametric time series models, possibly nonlinear in variables. The residuals autocorrelation function is the basic model checking tool in time series analysis, but it is not useful when its distribution is incorrectly approximated because the effects of parameter estimation and/or higher-order serial dependence have not been taken into account. The limiting distribution of the residuals sample autocorrelations may be difficult to derive, particularly when the underlying innovations are uncorrelated but not independent. In contrast, our proposal is easily implemented in fairly general contexts and the resulting transformed sample autocorrelations are asymptotically distributed as independent standard normals when innovations are uncorrelated, providing an useful and intuitive device for time series model checking in the presence of estimated parameters. We also discuss in detail alternatives to the classical Box–Pierce test, showing that our transform entails no efficiency loss under Gaussianity in the direction of MA and AR departures from the white noise hypothesis, as well as alternatives to Bartlett’s Tp-process test. The finite-sample performance of the procedures is examined in the context of a Monte Carlo experiment for the new goodness-of-fit tests discussed in the article. The proposed methodology is applied to modeling the autocovariance structure of the well-known chemical process temperature reading data already used for the illustration of other statistical procedures. Additional technical details are included in a supplemental material online.

Heuristic and probabilistic methods for taking efficient readings in diagnostic systems

This paper is devoted to the application of the following three approaches in diagnostic problems: heuristic, based on justifications of predictions of the results of operation of device components; probabilistic, using the structural dependence between components; and combined, with application of the probabilistic method and a heuristics for testing the workability of components. The capabilities of assumption-based truth maintenance systems (the so-called ATMS), which allow one to maintain consistency in DBs, are employed. The methods for choosing the point of the recurrent measurement were tested for a nine-bit device for parity checking. The results of testing have confirmed that the methods using the probabilistic and combined approaches provide the maximum efficiency of the choice of places for taking readings.

Photothermal Detection of Adulterants in Automotive Fuels

In this paper, we describe a new, simple, and fast photothermal method for detecting the presence of adulterants in commercial gasolines. The method consists essentially of measuring the time evolution of the gasoline vapor in an originarily air-filled closed cell using a pyroelectric sensor. The transient photothermal signal amplitude data fitting yields two parameters, namely, a saturation signal amplitude and the characteristic time for approaching saturation. From the values, two figures of merit are defined. The method was tested with a universe of 210 commercial samples collected in different gas stations. It is shown that the proposed method has an uncertainty of 5.7%. This good accuracy, together with its simplicity and fast response, may render it useful for developing a portable device for fast checking in field analysis.

Intelligent transportation system and traffic safety – drivers perception and acceptance of electronic speed checkers

Intelligent Transportation System (ITS) can play an important role in reducing risks and increasing traffic safety. Discussion as to whether a technological approach or a behavioral approach is the right way to achieve a safer traffic environment forms a point of departure for this paper. On the one hand, there are the technicians who emphasize technology as the way towards safer traffic. Behaviorists, on the other hand, view the drivers’ behavior as fundamental and argue that education and incentive-oriented policies are essential in order to influence the driver and therefore increase traffic safety. Independent of the approach advocated a successful outcome of either a technological improvement, or an information campaign, has to be based on a high level of acceptance among potential users. In order to increase traffic safety, it is therefore essential to recognize driver motivation and attitudes. In this paper we focus on drivers’ attitudes towards risk, traffic safety and safety measures. A study of drivers’ attitudes and acceptance of an electronic device for speed checking (which the drivers tested for nine months) indicated a high acceptance level. The drivers perceived that they had both become more aware of traffic regulations and behaved in accordance with safety regulations.

5473935 Method and device for checking and repairing waterproofing

The invention calls for a pipe with perforated walls to be laid on, in or under the waterproofing, such as located on and under waste dumps, to be monitored and if necessary repaired, the monitoring and repair operations being undertaken from this pipe.

A simple device for checking the acoustic beam of ultrasonic therapy equipment

Ultrasound of time average acoustic intensities between 0.5 and 3 W cm −2 is widely used in physiotherapy. A simple device for semiquantitative checking of output power and beam shape has been designed. The beam tester consists of an absorbing plate and a sheath liquid crystal thermometer for temperature distribution display. 1 The ultrasonic beam is fed to the absorber through a simple water tank.

Device for semiautomatic checking of electrical energy meters

Device for semiautomatic checking of electrical energy meters

Device for checking try squares

Device for checking try squares