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Zeitschriftenartikel zum Thema „Test device“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 1. Februar 2022

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1

Siswanto, Waluyo Adi, Mohd Norihan Ibrahim, Mohd Amran Madlan und Siti Mariah Mohamad. „Shaker Table Design for Electronic Device Vibration Test System“. International Journal of Engineering and Technology 3, Nr. 6 (2011): 663–68. http://dx.doi.org/10.7763/ijet.2011.v3.302.

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2

Maeno, Hidesh, und Tetsuo Tada. „4813043 Semiconductor test device“. Microelectronics Reliability 29, Nr. 5 (Januar 1989): iii. http://dx.doi.org/10.1016/0026-2714(89)90324-7.

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3

Dongré, Raj, John D’Angelo und Steve McMahon. „Development of Superpave Direct Tension Test Device“. Transportation Research Record: Journal of the Transportation Research Board 1586, Nr. 1 (Januar 1997): 32–39. http://dx.doi.org/10.3141/1586-05.

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The redesign and evaluation of the Superpave direct tension test (DTT) are described. The prototype of the DTT device was developed during the Strategic Highway Research Program (SHRP). The DTT device, an integral part of the new Superpave asphalt binder specification, was developed to test asphalt binders and determine their failure properties, such as the stress and strain at failure. The strain at failure is used in the Superpave asphalt binder specification to determine the lowest temperature at which the asphalt can be used to avoid low-temperature thermal cracking. When the SHRP program was completed, an affordable specification version of the prototype SHRP-DTT device was introduced for field implementation. Unfortunately, this version was plagued with mechanical problems, producing excessive variability and inconsistency in data. The device also was less user-friendly than other test devices that were being implemented for the asphalt binder specification. These problems led to implementation delays and difficulties. The problems were addressed by FHWA in cooperation with Instron Corporation of Canton, Massachusetts (a manufacturer of materials testing equipment). On the basis of recommendations made by FHWA, Instron developed a new, easy-to-use specification-type DTT device. This device is compact (approximately one-tenth the size of the original) and uses a fluid-based temperature control system similar to that used in the bending beam rheometer. The new device also employs feedback elongation (strain) rate control. However, unlike the previous device, the new DTT uses an extensometer between the loading pins instead of a laser to measure elongation (strain). The evaluation and resulting recommendations by FHWA, which led to the development of the new specification-type devices are discussed. The repeatability and testing protocols also are discussed.

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4

Kusmayanti, Suci, Gilang Yubiliana, Andri Abdurrochman, Muhamad Lutfi Ramdani und Naufal Hilmi Fauzan. „Effectiveness test of dental hypnosis monitoring device“. Padjadjaran Journal of Dentistry 33, Nr. 1 (31.03.2021): 26. http://dx.doi.org/10.24198/pjd.vol33no1.22383.

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Introduction: Dental hypnosis monitoring device is an innovative device due to the Student Creativity Program Universitas Padjadjaran. The device can monitor a patient's consciousness by monitoring the brain wave level so that dentists can determine what steps to take when handling a patient. The effectiveness of this device has not been tested yet. This study was aimed to determine the effectiveness of the dental hypnosis monitoring device. Methods: A descriptive study was conducted on this study population, all the patients of Universitas Padjadjaran Dental Hospital (RSGM Unpad) who filled out the MDAS questionnaire. The sample criteria were people with moderate to high MDAS score and aged 17 years or above. Twenty-four people were obtained through consecutive sampling in one day. The study was held at Universitas Padjadjaran Dental Hospital by comparing the dental hypnosis monitoring device's performance with opinion from the dental hypnosis expert. Results: The overall success rate for the dental hypnosis monitoring device's effectiveness was 100% since the LED was always lit green during the hypnosis session, which was following the dental hypnosis expert assessment during processes. Conclusion: The effectiveness of the dental hypnosis monitoring device was proven to be 100% effective.

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5

Xiao, Yao Zong, Wen Jun Zhang, Bin Wang und Chun Cheng Tai. „Floatation Column Test Research into Ore Way“. Advanced Materials Research 347-353 (Oktober 2011): 1718–21. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.1718.

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Developed a test using column flotation device, this experiment device in the structure designing considerate multifunctional traits, realizing continuous and respectively working. In the testing platform, installing two diameter vertical and inclined floatation column, so the device can complete roughing, selection and sweep the election testing. On researching the inflatable way, designing and testing two kinds of inflatable devices, one is jet, the other is sand core type. And testing three kinds of into ore ways, conical nozzle atomizer, atomizer grid and bar nozzle device. Through a series of contrast testing, making useful testing data, the testing provide the basis for designing the floatation column.

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Martínez Palmeth, Luis Humberto, María Angelica Gonzalez Carmona und José Miranda Castro. „Design and Analysis of a Bulge Test Device“. Ingeniería e Investigación 41, Nr. 3 (02.06.2021): e85756. http://dx.doi.org/10.15446/ing.investig.v41n3.85756.

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The aim of this work is to present the methodological process to design a device capable of performing Bulge tests. This kind of device allows obtaining more information about the plastic behavior of a material than the one provided by a traditional tensile test. The engineering specifications of the device were evaluated through the QFD methodology. Then, a basic design of the device was performed based on available analytical models such as thick-walled pressure vessel theory, annular plate theory, and a basic plasticity model for the biaxial stress state. Later, a detailed design of the device was proposed, which was evaluated by means of a 3D model of finite elements and a linearstatic analysis for the main components. Finally, a 2D axisymmetric model and a dynamic non-linear analysis were performed to validate the proposed design. The main novelty of the work consists of articulating the methodology of the mechanical design process and the conception, design, and validation of a Bulge device while solving the deficiencies found in the literature regarding the design and validation processes of this type of devices.

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7

KRIEGER, JAMES. „Test Device Reduces Exam Anxiety“. Chemical & Engineering News 70, Nr. 28 (13.07.1992): 37. http://dx.doi.org/10.1021/cen-v070n028.p037.

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8

Kniker, William T. „CHOOSING A SKIN TEST DEVICE“. Annals of Allergy, Asthma & Immunology 78, Nr. 5 (Mai 1997): 524. http://dx.doi.org/10.1016/s1081-1206(10)63243-7.

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9

Engler, David B. „CHOOSING A SKIN TEST DEVICE“. Annals of Allergy, Asthma & Immunology 78, Nr. 5 (Mai 1997): 524–25. http://dx.doi.org/10.1016/s1081-1206(10)63244-9.

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10

Gouge, Edward M. „A flame test demonstration device“. Journal of Chemical Education 65, Nr. 6 (Juni 1988): 544. http://dx.doi.org/10.1021/ed065p544.

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11

Sandor, A., K. L. Holden, J. W. Pace und L. Martin. „Cursor Control Device Test Battery“. Proceedings of the Human Factors and Ergonomics Society Annual Meeting 55, Nr. 1 (01.09.2011): 1823–26. http://dx.doi.org/10.1177/1071181311551379.

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12

Deaves, M. „On test [electronic device testing]“. Manufacturing Engineer 82, Nr. 5 (01.10.2003): 40–41. http://dx.doi.org/10.1049/me:20030508.

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13

Velghe, M. F., und P. Elleaume. „FEL optics coating test device“. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 259, Nr. 1-2 (September 1987): 83–87. http://dx.doi.org/10.1016/0168-9002(87)90433-5.

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14

Bayrakçeken, Hüseyin, Faruk Emre Aysal und İbrahim Mutlu. „The Design and Manufacturing of Brake‐Suspension Test Device“. Afyon Kocatepe University Journal of Sciences and Engineering 16, Nr. 2 (01.06.2016): 454–60. http://dx.doi.org/10.5578/fmbd.27861.

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15

Bruckhoff, Henning. „Test device for measuring the fit of hearing and related devices“. Journal of the Acoustical Society of America 78, Nr. 2 (August 1985): 822. http://dx.doi.org/10.1121/1.393084.

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16

Greason, W. D., und S. Bulach. „Constant energy device test for electrostatic discharge (ESD) of semiconductor devices“. IEEE Transactions on Industry Applications 33, Nr. 1 (1997): 286–97. http://dx.doi.org/10.1109/28.567133.

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17

Janky, Kristen L., Jessie N. Patterson, Neil T. Shepard, Megan L. A. Thomas und Julie A. Honaker. „Effects of Device on Video Head Impulse Test (vHIT) Gain“. Journal of the American Academy of Audiology 28, Nr. 09 (Oktober 2017): 778–85. http://dx.doi.org/10.3766/jaaa.16138.

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AbstractNumerous video head impulse test (vHIT) devices are available commercially; however, gain is not calculated uniformly. An evaluation of these devices/algorithms in healthy controls and patients with vestibular loss is necessary for comparing and synthesizing work that utilizes different devices and gain calculations.Using three commercially available vHIT devices/algorithms, the purpose of the present study was to compare: (1) horizontal canal vHIT gain among devices/algorithms in normal control subjects; (2) the effects of age on vHIT gain for each device/algorithm in normal control subjects; and (3) the clinical performance of horizontal canal vHIT gain between devices/algorithms for differentiating normal versus abnormal vestibular function.Prospective.Sixty-one normal control adult subjects (range 20–78) and eleven adults with unilateral or bilateral vestibular loss (range 32–79).vHIT was administered using three different devices/algorithms, randomized in order, for each subject on the same day: (1) Impulse (Otometrics, Schaumberg, IL; monocular eye recording, right eye only; using area under the curve gain), (2) EyeSeeCam (Interacoustics, Denmark; monocular eye recording, left eye only; using instantaneous gain), and (3) VisualEyes (MicroMedical, Chatham, IL, binocular eye recording; using position gain).There was a significant mean difference in vHIT gain among devices/algorithms for both the normal control and vestibular loss groups. vHIT gain was significantly larger in the ipsilateral direction of the eye used to measure gain; however, in spite of the significant mean differences in vHIT gain among devices/algorithms and the significant directional bias, classification of “normal” versus “abnormal” gain is consistent across all compared devices/algorithms, with the exception of instantaneous gain at 40 msec. There was not an effect of age on vHIT gain up to 78 years regardless of the device/algorithm.These findings support that vHIT gain is significantly different between devices/algorithms, suggesting that care should be taken when making direct comparisons of absolute gain values between devices/algorithms.

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18

Katoh, Yoshihisa, Shintaro So, Younggun Han, Osamu Horiuchi, Woon Choi und Hajime Tomokage. „Reliability Test of Embedded Device Substrates“. Journal of The Japan Institute of Electronics Packaging 17, Nr. 5 (2014): 370–75. http://dx.doi.org/10.5104/jiep.17.370.

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19

Yang, Shi Liang, Teng Li, Wei Hong Tang und Ling Dai. „Electrostatic Sensitivity Test of Semiconductor Device“. Advanced Materials Research 1030-1032 (September 2014): 1172–75. http://dx.doi.org/10.4028/www.scientific.net/amr.1030-1032.1172.

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The electrostatic sensitivity of triode 2SC3358 has been tested by completely step method. By using strict calculation, we have found the damage threshold voltage distribution of CB junction of the semiconductor device observe normal distribution, the confidence interval about average value of the damage voltage under a confidence level at 90% is (1095.6V, 1256.8V) and the standard deviation is 235.7V. The analysis of the distribution of damage probability about electrostatic sensitive device has important significance for improving the reliability of electrostatic sensitive system.

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Du, Wei Ming, Cai Bin Liu und Guo Hong Liu. „Design of Radar Transmitter Test Device“. Advanced Materials Research 791-793 (September 2013): 941–44. http://dx.doi.org/10.4028/www.scientific.net/amr.791-793.941.

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Following the test work is difficult and complex in the modern radar maintenance support, the automatic testing of radar is necessary for the radar maintenance man. Radar transmitter test device is designed to test the work state and performance parameter of radar transmitter off-line or on-line, and means while it has expert default diagnosis system to analyze the key signals and locate typical faults. The test device is accordingly seen as a good means to middle radar maintenance support. The design of radar transmitter test device is given, its hardware solution and software solution is explained. And finally the reliability and expansibility of the device is discussed at last.

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21

Jakubovičová, Lenka, Branislav Ftorek, Vladislav Baniari, Alžbeta Sapietová, Tomáš Potoček und Milan Vaško. „Engineering Design of a Test Device“. Procedia Engineering 177 (2017): 520–25. http://dx.doi.org/10.1016/j.proeng.2017.02.255.

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22

Kroeger, Michael, Horst Karl, Bernhard Simmler und Peter Singer. „Viability Test Device for anisakid nematodes“. Heliyon 4, Nr. 3 (März 2018): e00552. http://dx.doi.org/10.1016/j.heliyon.2018.e00552.

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23

Gent, A. N., T. T. Thompson und R. D. Ramsier. „A “Wobble-Plate” Dynamic Test Device“. Rubber Chemistry and Technology 76, Nr. 4 (01.09.2003): 779–84. http://dx.doi.org/10.5254/1.3547771.

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Abstract A simple dynamic tester is proposed, in which a disk of rubber is subjected to a rotating tilting deformation. In one arrangement, the rubber disk rests on a horizontal base and a light steel plate rests on its upper surface. A circular groove in the upper surface of the plate is centered on the axis of the rubber disk. An off-center vertical load is then applied to the rubber disk via a steel ball running in the circular groove. As the ball rolls round the groove, driven by friction with a rotating countersurface, the rubber disk undergoes a rotating off-center compression - a tilting deflection - that rotates at the same rate as the ball. If the rubber is perfectly elastic, no torque is required to maintain this motion and the deflection of the rubber will be exactly in phase with the compressive force. The maximum deflection then occurs at the location of the ball. However, if the rubber exhibits delayed elasticity, then the maximum deflection occurs after the ball has passed, at an angular separation δ, where δ is the angle of mechanical loss. Thus, the phase angle δ can be observed and measured directly. Also, if required, the separate components E′ and E″ of the complex dynamic modulus can be calculated from the applied force and deflection, and the torque required to maintain the motion.

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24

Blad, Börje, Per Wendel und Per Nilsson. „A simple test device for electrometers“. Physics in Medicine and Biology 43, Nr. 8 (01.08.1998): 2385–91. http://dx.doi.org/10.1088/0031-9155/43/8/028.

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25

Bahl, C. R. H., T. F. Petersen, N. Pryds und A. Smith. „A versatile magnetic refrigeration test device“. Review of Scientific Instruments 79, Nr. 9 (2008): 093906. http://dx.doi.org/10.1063/1.2981692.

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26

&NA;. „CE Test: Pinpointing intravascular device infections“. Nursing Management (Springhouse) 34, Nr. 6 (Juni 2003): 42–43. http://dx.doi.org/10.1097/00006247-200306000-00017.

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27

Crane, F. Edward, Scott Davidson, Jack Kane, Charles E. Stroud und Shianling Wu. „Trends in Digital Device Test Methodologies“. AT&T Technical Journal 73, Nr. 2 (04.03.1994): 10–18. http://dx.doi.org/10.1002/j.1538-7305.1994.tb00574.x.

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28

Lacher, Alexander, Nikolas Juengel und Utz von Wagner. „Modelling of a pyroshock test device“. PAMM 9, Nr. 1 (Dezember 2009): 291–92. http://dx.doi.org/10.1002/pamm.200910119.

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David Suits, L., TC Sheahan, A. Hameiri und RJ Fannin. „A Cyclic Gradient Ratio Test Device“. Geotechnical Testing Journal 25, Nr. 3 (2002): 9921. http://dx.doi.org/10.1520/gtj11097j.

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30

Shang, Yujun, Chenglong Wang, Hongmei Xu, Shuang Liu, Wei Jiang und Jiajun Dong. „Noise Source Identification of the Grain Combining Harvester Based on Acoustic Array Test“. Applied Engineering in Agriculture 36, Nr. 6 (2020): 879–90. http://dx.doi.org/10.13031/aea.14153.

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HIGHLIGHTSWe tested the noise of a grain combining harvester using a spiral acoustic array, aiming to identify its main sources and reduce its noise level.The noise of the harvester is mainly concentrated in the frequency range of 1 to 4 kHz.When the power of other devices is cut off, engine is the main noise source. While all devices are in normal working condition, the main source of noise is the header device and the intermediate conveying device.Abstract. The grain combine harvester is an important agricultural equipment with multiple functions of harvesting, threshing, separating, cleaning and grain gathering. As an instantaneous physical pollution, noise has become one of the main causes of modern civilization diseases. The noise generated by the operation of harvesters not only causes harm to the workers, but also leads to environmental noise pollution. Here, we tested the noise of a grain combine harvester using a spiral acoustic array, aiming to identify its main source by noise source identification technology based on the sound pressure distribution and reduce its noise level. The test results show that the noise of the harvester is mainly concentrated in the frequency range of 1 to 4 kHz. When the power of other devices is cut off, the engine is the main noise source, while under normal working conditions of all devices, the main source of noise is the header device and the intermediate conveying device on the front side of the harvester, the threshing device on the rear side, the engine and the threshing device on the left side, and the engine and the header device on the right side. Keywords: Acoustic array technology, Grain combining harvester, Noise source identification, Vibration and noise reduction.

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Jia, Xiaofei, Wenhao Chen, Bing Ding und Liang He. „Noise test method for dual-gate MOSFET device“. Modern Physics Letters B 33, Nr. 31 (10.11.2019): 1950387. http://dx.doi.org/10.1142/s0217984919503871.

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In recent years, with the development of mesoscopic physics and nanoelectronics, the research on noise and testing technology of electronic components has been developed. It is well known that noise can characterize the transmission characteristics of carriers in nanoscale electronic components. With the continuous shrinking of the device size, the carrier transport of nanoscale MOSFET devices has been gradually transformed from the traditional drift-diffusion to become the quasi-ballistic or ballistic transport, and its current noise contains granular and thermal noise. The paper by Jeon et al. [The first observation of shot noise characteristics in 10-nm scale MOSFETs, in Proc. 2009 Symp. VLSI Technology (IEEE, Honolulu, 2009), pp. 48–49] presents the variation relation of 20 nm MOSFET current noise with source–drain current and voltage, and its current noise characteristic is between thermal noise and shot noise, so 20 nm MOSFET current noise is shot noise and thermal noise. The paper by Navid et al. [J. Appl. Phys. 101 (2007) 124501] shows through simulation that the 60 nm MOSFET current noise is suppressed shot noise and thermal noise. At present, the current noise has seriously affected the basic performance of the device, thus the circuit cannot work normally. Therefore, it is necessary to study the generation mechanism and characteristics of current noise in electronic components so as to suppress device noise, which can not only realize the reduction of device noise, but also play a positive role in the work-efficiency, life-span and reliability of electronic components.

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Haverkate, Liz, Gerwin Smit und Dick H. Plettenburg. „Assessment of body-powered upper limb prostheses by able-bodied subjects, using the Box and Blocks Test and the Nine-Hole Peg Test“. Prosthetics and Orthotics International 40, Nr. 1 (21.10.2014): 109–16. http://dx.doi.org/10.1177/0309364614554030.

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Background: The functional performance of currently available body-powered prostheses is unknown. Objective: The goal of this study was to objectively assess and compare the functional performance of three commonly used body-powered upper limb terminal devices. Study design: Experimental trial. Methods: A total of 21 able-bodied subjects ( n = 21, age = 22 ± 2) tested three different terminal devices: TRS voluntary closing Hook Grip 2S, Otto Bock voluntary opening hand and Hosmer Model 5XA hook, using a prosthesis simulator. All subjects used each terminal device nine times in two functional tests: the Nine-Hole Peg Test and the Box and Blocks Test. Results: Significant differences were found between the different terminal devices and their scores on the Nine-Hole Peg Test and the Box and Blocks Test. The Hosmer hook scored best in both tests. The TRS Hook Grip 2S scored second best. The Otto Bock hand showed the lowest scores. Conclusion: This study is a first step in the comparison of functional performances of body-powered prostheses. The data can be used as a reference value, to assess the performance of a terminal device or an amputee. Clinical relevance The measured scores enable the comparison of the performance of a prosthesis user and his or her terminal device relative to standard scores.

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Zuehlke, Detlef, und Lutz Krauss. „A New and Simple Method and Tool for the Evaluation of Input Devices“. Proceedings of the Human Factors and Ergonomics Society Annual Meeting 46, Nr. 24 (September 2002): 1987–91. http://dx.doi.org/10.1177/154193120204602411.

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The known Fitts law model is mainly used in the field of HCI for office applications in order to evaluate interaction devices. This paper presents the new method DEVICE that is also available as free stationary software tool and is applied in the field of HMI for the evaluation of pointing devices. Tests with DEVICE and Fitts' method were conducted with machine operators under industrial environments to determine the suitability of thirty different pointing devices The comparison between DEVICE and Fitts' law model shows, that the results of certain partial tests correlate with each other. DEVICE can be used as substitute for Fitts' law model and offers additional features such as e.g. error rates and pointing deviation. The advantages of DEVICE are shorter test times (only one tenth of the test times required with the Fitts' method), more diverse tests for the test persons, a parameter that can be exactly evaluated by the person who is in charge of the test and the comparability between different studies.

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Wang, Li Quan, Yong Dong An, Rong Hua Sun und Shao Jun An. „Research on Loading Method of High-Speed Closed Power Flow Test System“. Key Engineering Materials 419-420 (Oktober 2009): 129–32. http://dx.doi.org/10.4028/www.scientific.net/kem.419-420.129.

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In this paper, a new type of shaft end torque loadling device is studied for the closed power flow test system of the high-power marine reducer, and it illustrates the structure of the load device, makes the principle of analysis and power calculation of the loading device; and analyses the test system power flow conditions and anti-way self-locking of the installation, Finally, the loading devices of the test system is designed to the order of 100000 magnitude reducer, verify the feasibility of this loading method.

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Masuda, Hiroyuki. „Long Term Laboratry Test Using New Atmospheric Corrosion Test Device“. Journal of the Japan Institute of Metals 70, Nr. 9 (2006): 780–84. http://dx.doi.org/10.2320/jinstmet.70.780.

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Oliver, MartinJ. „4727317 Device orientation test method suitable for automatic test equipment“. Microelectronics Reliability 28, Nr. 5 (Januar 1988): 838. http://dx.doi.org/10.1016/0026-2714(88)90126-6.

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Zhang, Kui, Hong Dong Zhao, Tong Xi Shen und Jie Huang. „Research of Probability Distribution of Semiconductor Test Parameter“. Advanced Materials Research 1049-1050 (Oktober 2014): 754–61. http://dx.doi.org/10.4028/www.scientific.net/amr.1049-1050.754.

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The probability distribution of electrical characteristic parameters of semiconductor device is an important reference which is used to analyze the reliability and quality consistency of devices. These distributions are considered as normal distribution at home and abroad. This paper utilized mature GaAs MESFET low noise amplifier as analytic sample which is volume production and wide application, and used high-precision Agilent B1505A device analyzer to test main electrical characteristics of 408 samples. After the distribution generation of test results, the Skewness-Kurtosis method was used to analyze probability distributions of the results. At last, the conclusion of distribution of measuring parameter is non-normal distribution was educed.

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Volobuev, S. V., und V. G. Ryabtsev. „Interface Features of the DDR SDRAM Memory Test Diagnostic Device“. Proceedings of Universities. Electronics 26, Nr. 3-4 (2021): 282–90. http://dx.doi.org/10.24151/1561-5405-2021-26-3-4-282-290.

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The I/О synchronization scheme plays an important role in achieving maximum speed and reliability of data transmission during memory operation. This paper presents the interface architecture of the DDR SDRAM test diagnostic device. It was demonstrated that the proposed interface components provide the formation of a bidirectional synchro signal for gating written and read data when performing test diagnostics of chips and DDR SDRAM memory devices. Compared to traditional methods, the proposed interface components were made on integrated electronic elements, which reduced the size and power consumption. It has been established that the use of a multiphase synchronization system to implement the interface eliminated the use of delay lines, the disadvantages of which are large dimensions and the complexity of changing the delay time. The interface components under consideration are intended for use in test diagnostics devices that have a multiprocessor structure, which increases the speed of forming test actions and reference reactions. The performed functional modeling and debugging of strobe signal generators confirmed the feasibility of the designs. The proposed interface of the test diagnostics device allows performing test diagnostics of modern high-speed chips and semiconductor memory modules at the operating frequency, which increases the reliability of the results obtained. Interface components can be used by manufacturers of test diagnostics tools for modern high-speed storage devices.

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Brakerski, Zvika, Paul Christiano, Urmila Mahadev, Umesh Vazirani und Thomas Vidick. „A Cryptographic Test of Quantumness and Certifiable Randomness from a Single Quantum Device“. Journal of the ACM 68, Nr. 5 (31.10.2021): 1–47. http://dx.doi.org/10.1145/3441309.

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We consider a new model for the testing of untrusted quantum devices, consisting of a single polynomial time bounded quantum device interacting with a classical polynomial time verifier. In this model, we propose solutions to two tasks—a protocol for efficient classical verification that the untrusted device is “truly quantum” and a protocol for producing certifiable randomness from a single untrusted quantum device. Our solution relies on the existence of a new cryptographic primitive for constraining the power of an untrusted quantum device: post-quantum secure trapdoor claw-free functions that must satisfy an adaptive hardcore bit property. We show how to construct this primitive based on the hardness of the learning with errors (LWE) problem.

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Killian, Jacquelin M., Rachel M. Radin, Cubby L. Gardner, Lalon Kasuske, Kylee Bashirelahi, Dominic Nathan, David O. Keyser, Christopher J. Cellucci, David Darmon und Paul E. Rapp. „Alternative Devices for Heart Rate Variability Measures: A Comparative Test–Retest Reliability Study“. Behavioral Sciences 11, Nr. 5 (02.05.2021): 68. http://dx.doi.org/10.3390/bs11050068.

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Using healthy adult participants, seven measures of heart rate variability were obtained simultaneously from four devices in five behavioral conditions. Two devices were ECG-based and two utilized photoplethysmography. The 140 numerical values (measure, condition, device) are presented. The comparative operational reliability of the four devices was assessed, and it was found that the two ECG-base devices were more reliable than the photoplethysmographic devices. The interchangeability of devices was assessed by determining the between-device Limits of Agreement. Intraclass correlation coefficients were determined and used to calculate the standard error of measurement and the Minimal Detectable Difference. The Minimal Detectable Difference, MDD, quantifies the smallest statistically significant change in a measure and is therefore critical when HRV measures are used longitudinally to assess treatment response or disease progression.

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Isetta, Valentina, Daniel Navajas, Josep M. Montserrat und Ramon Farré. „Comparative assessment of several automatic CPAP devices' responses: a bench test study“. ERJ Open Research 1, Nr. 1 (Mai 2015): 00031–2015. http://dx.doi.org/10.1183/23120541.00031-2015.

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Automatic continuous positive airway pressure (APAP) devices adjust the delivered pressure based on the breathing patterns of the patient and, accordingly, they may be more suitable for patients who have a variety of pressure demands during sleep based on factors such as body posture, sleep stage or variability between nights. Devices from different manufacturers incorporate distinct algorithms and may therefore respond differently when subjected to the same disturbed breathing pattern. Our objective was to assess the response of several currently available APAP devices in a bench test.A computer-controlled model mimicking the breathing pattern of a patient with obstructive sleep apnoea (OSA) was connected to different APAP devices for 2-h tests during which flow and pressure readings were recorded. Devices tested were AirSense 10 (ResMed), Dreamstar (Sefam), Icon (Fisher & Paykel), Resmart (BMC), Somnobalance (Weinmann), System One (Respironics) and XT-Auto (Apex). Each device was tested twice.The response of each device was considerably different. Whereas some devices were able to normalise breathing, in some cases exceeding the required pressure, other devices did not eliminate disturbed breathing events (mainly prolonged flow limitation). Mean and maximum pressures ranged 7.3–14.6 cmH2O and 10.4–17.9 cmH2O, respectively, and the time to reach maximum pressure varied from 4.4 to 96.0 min.Each APAP device uses a proprietary algorithm and, therefore, the response to a bench simulation of OSA varied significantly. This must be taken into account for nasal pressure treatment of OSA patients and when comparing results from clinical trials.

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Borozenets, A. S., A. V. Proskurin und A. V. Shlishevskiy. „Evaluation of the Composite Barrier Natural Oscillations Influence on the Generated Shock Loading“. Herald of the Bauman Moscow State Technical University. Series Mechanical Engineering, Nr. 1 (136) (März 2021): 103–13. http://dx.doi.org/10.18698/0236-3941-2021-1-103-113.

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The problem of studying behavior of various structures under the influence of intense impulsive (shock) loads arising during operation of many modern facilities, machines and devices remains relevant for many years. Shock loading in laboratory conditions is generated due to interaction between the test object and the braking device (barrier). In this case, braking device or barrier could be a one-piece or a prefabricated structure. If the braking device (barrier) dimensions commensurate with the test object, the braking device natural oscillation frequencies excited during interaction between the test object and the braking device (barrier) could be found in the range of the test object natural oscillation frequencies. Frequency determination within the signal spectrum registered on the test object and caused by oscillations of the braking device (barrier) or test equipment, would assist in better assessing the test object shock loading and its compliance with real operating conditions

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Pan, Zhi Yong, Sheng Yin Song, Wen Hong Liu, Yao Rong Feng und Xin Hu Wang. „Research and Application of Expansion Evaluation Device for Solid Expandable Tubular“. Advanced Materials Research 339 (September 2011): 579–82. http://dx.doi.org/10.4028/www.scientific.net/amr.339.579.

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The expansion evaluation device for solid expandable tubular (SET) was researched and designed considering some questions of too little expansion force to flareout SET for a great many other simple expansion devices, too little expansion speed, improper expansion process that don’t match the truth and etc.. The SET can be checked and evaluated through expansion test simulating oil field fact on the expansion evaluation device. Using this device the expansion test can be carried out by only mechanical stretching force or only hydraulic pressure or the combination of mechanical tensile force and hydraulic power. Practice shows that the evaluation devic is characterized by low cost, economic and pragmatic and high reliability. On the other hand some other roles can be get by making use of evaluation device, for example research on deformation law for steel pipe, choice and development of SET’s material, optimization design of expansion cone, study on expansion technology and etc.. The expansion evaluation device will make a great role on promoting SET quality and advance the localization process of chinese SET industry.

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Li, Hu, Yubo Fan und Zhou Li. „Fabrication and performance test of biodegradable supercapacitor“. MRS Advances 4, Nr. 37 (2019): 2063–70. http://dx.doi.org/10.1557/adv.2019.253.

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ABSTRACTPower source plays an important role in keeping normal functions of biodegradable electronic devices. In this paper, we proposed a fabrication method of biodegradable supercapacitor (BSC), which can provide energy for portable and implantable medical electronics. The BSC has a sandwich-like symmetric structure, which was assembled layer by layer. The electrochemical performances of BSC were measured, including the cyclic voltammetry test, galvanostatic charge-discharge and electrochemical impedance spectroscopy. Titanium foil was used as a template to generate microstructure for polylactic acid (PLA) supporting substrate. The microstructure provided strong adhesion force for iron film in sputtering process. The nanoporous zinc oxide layer was prepared by evaporation-driven self-assembly technology on iron film. The nanoporous structure was in favour of ionic storage in charging-discharging process. About 60% of capacitance retention was achieved after 3000 times of cycling test. After connecting three BSC in series, a green LED pattern was lighted up immediately, indicating that the energy was stored in BSC device successfully. After immersing the BSC in DMEM, the BSC can be totally degraded gradually. This work provided a feasible scheme for developing biodegradable energy storage device, it also gave a possible avenue for powering biodegradable electronic devices.

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Panthawong, Amonrat, Stephen L. Doggett und Theeraphap Chareonviriyaphap. „The Efficacy of Ultrasonic Pest Repellent Devices against the Australian Paralysis Tick, Ixodes holocyclus (Acari: Ixodidae)“. Insects 12, Nr. 5 (30.04.2021): 400. http://dx.doi.org/10.3390/insects12050400.

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Ultrasonic pest repellers are often promoted as a means of protecting people and pets from the bites of hematophagous arthropods, such as ticks. However, to date, there has been no published research on the effectiveness of these devices against the Australian paralysis tick, Ixodes holocyclus Neumann. The purpose of this study was to test the effectiveness of nine ultrasonic devices against female I. holocyclus. Two arenas were constructed, one for the test (with the ultrasonic device) and one for the control (no device). Each arena had a test and an escape chamber, connected by a corridor. Twenty ticks were placed in each test chamber. After the ultrasonic device was operated for 1 h, the number of ticks in both chambers was recorded. Ten replicates were conducted for each device. The average number of ticks that moved from the test to the escape chamber was greater in all the test arenas, with three devices being statistically different from the control. However, the highest percent of ticks that escaped was only 19.5%. This amount is insufficient to offer adequate protection against tick bites and this study adds further weight to previous investigations that ultrasonic devices should not be employed in pest management.

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Cheng, Ze, Zhao Long Xuan, Wei Wang und Mao Sen Hao. „Test Method for Electronic Device on Condition of Small Sampling“. Applied Mechanics and Materials 347-350 (August 2013): 525–28. http://dx.doi.org/10.4028/www.scientific.net/amm.347-350.525.

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The traditional quality testing method does not apply for the new electronic device which have characters that high-value and small-count, take advantage of the small sampling theory, we can reduce the number of test sample significantly by using the Bayes method. In the processing of the experimental data, we can improve the accuracy of the quality assessment of electronic devices by using of the Bayes method and make full use the prior information.

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Kelemenová, Tatiana. „AIRFLOW MEASUREMENT TEST DEVICE FOR AIRFLOW SENSORS“. Acta Mechatronica 4, Nr. 4 (31.12.2019): 17–21. http://dx.doi.org/10.22306/am.v4i4.52.

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Saraogi, Ashish, S. Parthasarathy, VR Hemanth Kumar und M. Ravishankar. „Improvised device for negative-pressure leak test“. Indian Journal of Anaesthesia 56, Nr. 2 (2012): 201. http://dx.doi.org/10.4103/0019-5049.96311.

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Huang Yongjun, 黄勇军, 文光俊 Wen Guangjun, 李天倩 Li Tianqian und 谢康 Xie Kang. „Test device for negative refractive index materials“. High Power Laser and Particle Beams 23, Nr. 1 (2011): 221–24. http://dx.doi.org/10.3788/hplpb20112301.0221.

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Liu, Qiang, Ying Xue Yao und L. Zhou. „Research on a New Nanohardness Test Device“. Applied Mechanics and Materials 10-12 (Dezember 2007): 533–37. http://dx.doi.org/10.4028/www.scientific.net/amm.10-12.533.

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Nanoindentation has become the main method to obtain the micro- characteristic of materials by now. Nanoindentation device has the ability to make the load-displacement measurement with sub-nanometer indentation depth sensitivity, and the nanohardness of the material can be achieved by the load-displacement curve. The article discusses a new convenient nanohardness testing device, and approves its practicability and reliability by taking the indentation experiment on single-crystal aluminum.

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