Relevant bibliographies by topics / Ping test

Academic literature on the topic 'Ping test'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Ping test"

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Maria ulfah and Syifa’atul Mahmudah. "RANCANG BANGUN DAN PENGUJIAN PERFOMANSI ANTENA MIMO 2X1 DAN 4X1 METODE ARRAY RECTANGULER PATCH FREKUENSI 2,3 GHz – 2,4 GHz TEKNOLOGI 4G LTE." Jurnal RESISTOR (Rekayasa Sistem Komputer) 3, no. 1 (April 17, 2020): 49–56. http://dx.doi.org/10.31598/jurnalresistor.v3i1.553.

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Antenna microstrip merupakan salah satu antenna yang saat ini diterapkan pada teknologi 4G LTE dengan rancangan multi input multi output (MIMO). Untuk mencapai peningkatkan nilai parameter gain (penguatan) agar jangkauan jaringan 4G LTE lebih luas maka dalam penelitian ini dirancang antenna MIMO 2X1 dan 4x1 rectanguler patch dengan digunakan metode array dengan frekuensi kerja 2,3 GHz – 2,4 GHz.Hasil simulasi untuk antenna MIMO 2x1 terdiri dari gain 5,13 dB, return loss -18,913 dB, VSWR 1,2555. Hasil simulasi untuk antenna MIMO 4x1 terdiri dari gain 7,322 dB, return loss -15,59 dB, VSWR 1,3985. Untuk pengukuran perfomansi antenna 2x1 outdoor memiliki rata-rata ping test 119,6 ms, download test 20.12 Mbps, upload test 8,5 Mbps. . Untuk pengukuran perfomansi antenna 2x1 indoor memiliki rata-rata ping test 85,91 ms, download test 20.06 Mbps, upload test 7 Mbps. Untuk pengukuran perfomansi antenna 4x1 outdoor memiliki rata-rata ping test 150 ms, download test 2,82 Mbps, upload test 2,92 Mbps. Untuk pengukuran perfomansi antenna 4x1 indoor memiliki rata-rata ping test 107,45 ms, download test 22,38 Mbps, upload test 5,12 Mbps
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Li, Qi, Yan Fei Liu, and Tie Qian Yang. "Design of Double SDRAM Controller for Multibus Ground-Based Test Equipment." Advanced Materials Research 459 (January 2012): 474–78. http://dx.doi.org/10.4028/www.scientific.net/amr.459.474.

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A double Synchronous Dynamic Random Access Memory controller based on ping-pong operation as the data buffer is designed to meet the requirement of large data amount and high transmission speed for multibus ground-based test equipment of a certain missile system. The design scheme which use FPGA as the main controller is presented in detail, including the internal interface of SDRAM, processings of data transmission and realization of ping-pong operation. The function of this controller is validated through the picked images from image generator, and the result shows that it can write and read data at the steady rate of 125Mbit/s, which indicate this SDRAM controller is feasible for the multibus ground-based test equipment
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Chen, Chun-Ray, Shi-Lon Dong, I.-Kuang Fang, Chung-Ching Chang, and Cheing-Chou Chen. "Load Test of Kao-Ping-Hsi Cable Stayed Bridge." IABSE Symposium Report 84, no. 7 (January 1, 2001): 65–72. http://dx.doi.org/10.2749/222137801796350293.

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Qi, Peng, Jing Zhang, Zhi Rong Mei, and Yue Xiu Wu. "Laboratory Study of Permeability in Low Permeability Medium." Advanced Materials Research 450-451 (January 2012): 1249–52. http://dx.doi.org/10.4028/www.scientific.net/amr.450-451.1249.

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Based on the developed low permeability test instrument, gas transport properties of typical Jin-Ping marbles are studied under steady flow of nitrogen. A low permeability test instrument and its tri-axial cell structure were introduced in detail, and this test instrument was used to study transport properties of dense rocks under different temperatures and stress conditions, the Test results showed that intrinsic permeability of Jin-Ping marble is about 10－20 m2. Comparisons are made between test results and an exact method which considers Klinkenberg effect in gas flow equation. Fitting results using the exact method show better agreement with laboratory testing results and the transport parameters gained are more convincible.
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Manouchehri, M. A., and A. Hosseininaveh Ahmadabadian. "EXTRINSIC CALIBRATION OF ROTATING 2D LASER RANGE FINDER AND CAMERA USING PHOTOGRAMMETRIC TEST FIELD AND PING PONG BALLS." ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences X-4/W1-2022 (January 14, 2023): 475–81. http://dx.doi.org/10.5194/isprs-annals-x-4-w1-2022-475-2023.

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Abstract. In this article, a method for the extrinsic calibration of a 2D laser range finder and a camera is presented. This technique produces a 3D point cloud from the test field by connecting a laser range finder to a servomotor. In this study, ping balls and standard photogrammetric targets were employed as a test field. Ping pong balls are used because they can be easily recognized in data from laser range finder and camera. To calculate extrinsic calibration parameters between a camera and laser range finder, these balls are employed as control points in the data. The extrinsic calibration of the Laser range finder and camera is carried out using the point cloud created from the test field and the photos captured from the test field. In this method, a sphere is fitted to each ping pong ball's points in the 3D point cloud, and the coordinates of that sphere's center are taken to be the coordinates of that ball. By measuring the distances between various targets in the test field, the scale can be resolved. This approach was compared with another state-of-the-art method. The proposed method is more accurate and stable than the alternative way, taking into account the average inaccuracy of check points.
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Fang, I.-Kuang, Chun-Ray Chen, and I.-Shang Chang. "Field Static Load Test on Kao-Ping-Hsi Cable-Stayed Bridge." Journal of Bridge Engineering 9, no. 6 (November 2004): 531–40. http://dx.doi.org/10.1061/(asce)1084-0702(2004)9:6(531).

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Restrepo, D., B. L. Cronise, R. B. Snyder, and P. A. Knauf. "A novel method to differentiate between ping-pong and simultaneous exchange kinetics and its application to the anion exchanger of the HL60 cell." Journal of General Physiology 100, no. 5 (November 1, 1992): 825–46. http://dx.doi.org/10.1085/jgp.100.5.825.

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We have developed a new test to differentiate between ping-pong and simultaneous mechanisms for tightly coupled anion exchange. This test requires the use of a dead-end reversible noncompetitive inhibitor. As an example, we have applied the test to the anion exchanger of the HL60 cell using the salicylic acid derivative 3,5-diiodosalicylic acid (DIS), which reversibly inhibits HL60 cell Cl/Cl exchange. The concentration of DIS that causes 50% inhibition (ID50) increased only slightly as either intra- or extracellular chloride was increased, indicating that DIS inhibits HL60 anion exchange in a noncompetitive manner. In agreement with this observation, plots of the slope of the Dixon plot as a function of 1/[Clo] or 1/[Cli] were fit with straight lines with nonzero intercepts, indicating that DIS does not compete with either of the substrates ([Clo] and [Cli]). The secondary Dixon slope test is based on the fact that, for a dead-end inhibitor such as DIS, the slope of the Dixon plot slope vs. 1/[Cli] (secondary Dixon slope or SDS) is independent of extracellular Cl when the exchange mechanism follows ping-pong kinetics. Similarly, the SDS calculated from a plot as a function of 1/[Clo] is also independent of intracellular Cl for a ping-pong exchanger. In contrast to this prediction, we found that for DIS inhibition of Cl/Cl exchange in HL60 cells the slope of the Dixon plot slope vs. 1/[Cli] decreased by a factor of 2.5-fold when [Clo] was increased from 1 to 11 mM (P < 0.0001). This change in the SDS rules out ping-pong kinetics, but is consistent with a simultaneous model of Cl/Cl exchange in which there are extra- and intracellular anion binding sites, both of which must be occupied by suitable anions in order to allow simultaneous exchange of the ions.
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Huang, Yue, Qiaoping Zhang, and Laurent Ferro-Famil. "Forest Height Estimation Using a Single-Pass Airborne L-Band Polarimetric and Interferometric SAR System and Tomographic Techniques." Remote Sensing 13, no. 3 (January 30, 2021): 487. http://dx.doi.org/10.3390/rs13030487.

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This paper addresses forest height estimation for boreal forests at the test site of Edson in Alberta, Canada, using dual-baseline PolInSAR dataset measured by Intermap’s single-pass system. This particular dataset is acquired by using both ping-pong and non-ping-pong modes, which permit forming a dual-baseline TomoSAR configuration, i.e., an extreme configuration for tomographic processing. A tomographic approach, based on polarimetric Capon and MUSIC estimators, is proposed to estimate the elevation of tree top and of underlying ground, and hence forest height is estimated. The resulting forest DTM and DSM over the test site are validated against LiDAR-derived estimates, demonstrating the undeniable capability of the single-pass L-band PolInSAR system for forest monitoring.
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Wang, Yilei, and Ling Wang. "Machine Vision-Based Ping Pong Ball Rotation Trajectory Tracking Algorithm." Computational Intelligence and Neuroscience 2022 (June 13, 2022): 1–12. http://dx.doi.org/10.1155/2022/3835649.

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Because of the overwhelming characteristics of computer vision technology, the trend of intelligent upgrading in sports industry is obvious. Video technical and tactical data extraction, big data analysis, and match assistance systems have caused profound changes to all aspects of the sports industry. One of the important applications is the playback and analysis of sports videos. People can observe the videos and summarize the experience of sports matches, and in this process, people prefer the computers to also interpret and analyze sports matches, which can not only help coaches in postmatch analysis but also design robots to assist in teaching and training. In this paper, we have examined and designed an automatic detection system for ping pong balls, in which the motion trajectory and rotation information of ping pong balls are mainly detected. To achieve this goal, the detection and tracking algorithm of ping pong balls based on deep neural network is used, and better results are achieved on the data set established by ourselves and the actual system test. After obtaining the position of the ping pong ball in the image, the rotation direction and speed of the ping pong ball are calculated next, and the Fourier transform-based speed measurement method and the CNN-based rotation direction detection method are implemented, which achieve better results in the testing of lower speed datasets. Finally, this paper proposes an LSTM-based trajectory prediction algorithm to lay the foundation for the design of table tennis robot by predicting the trajectory of table tennis. Experimental tests show that the proposed system can better handle the ping pong ball tracking and rotation measurement problems.
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Fikri, Aditya Ari, Diah Ayu Retnani Wulandari, and Yudha Alif Auliya. "Detail Engineering Deisgn Perancangan Detail Engineering Design Infrastruktur Jaringan Komputer RSUD X Kota Y." INFORMAL: Informatics Journal 7, no. 3 (December 22, 2022): 268. http://dx.doi.org/10.19184/isj.v7i3.35144.

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Detailed Engineering Design Computer networks in hospitals are complete planning drawings that include architectural drawings and detailed elements that support the implementation of computer networks and are supported by technical documents in them. DED is required in hospitals as an attachment to the Network infrastructure submission document used for all hospital operations, health services, and other purposes. The method used in analyzing and designing the Detail Engineering Design is using the Gap Analysis Method (GAP). The proposed recommendations include network topology based on an analysis of existing needs and DED results for the computer network of X City Y Hospital. The topology testing parameters consider QOS (Quality of Service), which consists of ping testing on all devices, Traffic Block Firewall, and web server access. The test results were carried out using three parameters, namely the ping test, traffic block, and web server access, where all tests have been successful and are by the steps in carrying out the test.
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Dissertations / Theses on the topic "Ping test"

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Smith, Micah David 1976. "Pin-joint test rig design and scaling laws." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/88851.

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Fredriksson, Emelie. "Tent isolation experiment in an advanced Scots pine seed orchard." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-76290.

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Pollen contamination is a severe problem in production breeding programs since it reduces the expected gain. In an attempt to solve this problem Skogforsk created an isolation experiment in the advanced Scots pine (Pinus sylvestris) seed orchard Västerhus in Västerbotten, Sweden. This experiment involves covering blocks of trees with a tent during the pollination period so that they only can mate with each other inside. To evaluate the effects of this tent treatment one tree from inside a tent with supplementary mass pollination (SMP) and one tree from the open control were chosen for this study. 48 seeds from each tree were sampled and genotypes at 9 microsatellite (SSR) loci. The likelihood and exclusion methods for paternity assignment were used to establish the fathers to these seeds. The results showed 0% contamination inside the tent and 4-8% outside in the control. The number of fathers contributed to the fertilization of the 48 seeds was 9 inside and 15 outside. The selfing rate was unexpectedly high, 10% inside the tent and 19% outside. The mating system inside the tent need to be further evaluated to fully understand what other effect the treatment has on the future progeny.
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Bariola, Louis A. "PREP and DROPP for Controlling Pink Bollworm in 1986 Tests." College of Agriculture, University of Arizona (Tucson, AZ), 1987. http://hdl.handle.net/10150/204495.

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Henneberry, T. J., Jech L. Forlow, and R. A. Burke. "Steinernematid Nematode Infections of Pink Bollworm Larvae in Field Tests." College of Agriculture, University of Arizona (Tucson, AZ), 1997. http://hdl.handle.net/10150/211105.

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Under field conditions, pink bollworm (PBW), Pectinophora gossvpiella (Saunders), larvae were exposed to soil samples from plots treated with Steinernema riobravis at the rate of 5 nematodes per cm² of soil surface. Larval mortalities were 50% on the day of treatment and 2.5% on day 90 following treatment with irrigations about every 14 to 21 days,. Larval mortality percentages after exposure to soil samples from plots treated with S. carpocapsae at the rate of 5 per cm2 of soil surface were 32.5, 15.3, 5.3 and 2.5 for the day of treatment and day 1, 7, and 15 following treatment, respectively. No further mortality occurred in bioassays conducted up to 90 days following treatment. With plots treated with 25 nematodes per cm² of soil surface, PBW larval mortalities ranged from 100% on the day of treatment to 7.5% on day 63 following treatment with S. riobravis and 92.5% on the day of treatment to 5% on day 7 following treatment with S. carpocapsae. Percentages of larval mortality after exposure to soil samples from plots treated with S. riobravis increased after each irrigation, but did not increase after exposure to soil samples from plots treated with S. carpocapsae.
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Sundman, Ann-Sofie. "Personality in piglets : Is there a difference in personality traits between pigs from different teat order positions?" Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-69596.

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The objective of this study was to determine whether piglets from different positions in the teat order differ inpersonality. Teat order is established within the first days after birth and from that time, piglets basically suckle fromthe same teat pair until weaning. Three piglets from each of 21 litters (n = 63) were chosen for their place in teatorder; one from anterior teats (A), one from middle teats (B), and one from rear teats (C). The piglets were observedduring suckling, undisturbed behaviour, a novel object test and a straw test. A total of 13 behaviours were registered.A significant difference (P < 0.05) between A, B and C piglets was found in the frequency of disputes duringsuckling, where B piglets were most involved in disputes and C piglets least involved, and a tendency (P < 0.1) wasfound in frequency of undisturbed playing and exploration. A piglets played and explored most, and C piglets least.Four interesting components were found with principal component analysis, explaining 62.4 % of the total variation.These represent personality traits tentatively named exploration, playfulness, food interest and straw interest. Therewere no significant differences in personality type between A, B and C piglets although a tendency that A pigletswere most playful and C piglets were least playful was found. Hence, this study suggests that there might be acorrelation between teat order position and personality.
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Vendrame, Saimon. "Integridade superficial do aço-rápido AISI M3:2 após o processo de retificação /." Bauru, 2019. http://hdl.handle.net/11449/191113.

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Orientador: Eduardo Carlos Bianchi
Resumo: Aços-rápidos são materiais que exibem elevada resistência ao desgaste abrasivo, aliada a uma tenacidade relativamente alta, propriedades estas que os tornam adequados para se fabricar ferramentas de corte. Grande parte de suas propriedades se deve a presença de carbonetos na microestrutura. Ao mesmo tempo que estas propriedades mecânicas são favoráveis para a utilização como ferramentas, tornam-se desafios na sua fabricação. O processo de retificação é empregado nas últimas etapas de fabricação de ferramentas de corte como machos e brocas e a presença dos carbonetos afetam a eficiência dos rebolos. Neste contexto, este trabalho visa investigar o quanto a diferença de microestrutura de aços-rápidos classe AISI M3:2, obtidos de diferentes fornecedores, influencia na retificação, levando em consideração a integridade superficial. Os materiais, aqui nomeados como M-A, M-B e M-C, foram avaliados sob três aspectos: características da microestrutura, resistência à abrasão e integridade da superfície após a retificação. Da microestrutura os carbonetos tipo MC e M6C, foram descritos quanto à forma e a distribuição, utilizando para isso MEV e EDS. A resistência à abrasão dos materiais foi medida recorrendo ao método de ensaio tribológico pino-lixa. Após esta caracterização, foram realizados ensaios de retificação tangencial plana com rebolo de Carboneto de Silício (SiC) em várias penetrações de trabalho (entre 10 µm e 30 µm). As superfícies das amostras foram avaliadas mensurando a rug... (Resumo completo, clicar acesso eletrônico abaixo)
High-Speed Steels are materials that exhibit high abrasive wear resistance coupled withrelatively high toughness, properties that make them suitable for making cutting tools. Much ofits properties are due to the presence of carbides in the microstructure. While these mechanicalproperties are favorable for use as tools, they impose challenges in their manufacture. Thegrinding process is employed in the final stages of the cutting tools manufacturing, such as tapsand drills and the presence of carbides affects the efficiency of the grinding wheels. In thiscontext, this work aims to investigate how the microstructure difference of class AISI M3: 2steel, obtained from different suppliers, influences the grinding, taking into consideration thesurface integrity. The materials, here named M-A, M-B, and M-C, were evaluated under threeaspects: microstructure characteristics, abrasion resistance, and surface integrity after grinding.From the microstructure, carbides type MC and M6C were described regarding the shape anddistribution, using for this purpose SEM and EDS. The abrasive wear resistance of the materialswas measured using the pin-abrasive tribological test. After this characterization, flat tangentialgrinding tests were performed, using silicon carbide grinding wheel (SiC), in various workdepths (between 10 μm and 30 μm). The ground samples surfaces were evaluated by measuringthe roughness parameters, evaluated by SEM, and the microhardness profil
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RUPNIEWSKI, JAKUB JAN. "Evaluation of linear force actuators in a pin-on-disc test rig application." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-286015.

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This thesis presents an evaluation and comparison of two linear actuators that can be used as load application actuators in a pin-on-disc tribological test rig. The first actuator is a DC-motor with an external ball screw, and the second actuator is a voice coil. The actuators are required to follow the reference force profile which corresponds to the thread contact force during a screw tightening process. In order to compare the two actuators, a Simulink model of the pin-on-disc test rig was created to be used as an experimental environment. The controllers for each actuator were designed using the same design method. Further, a set of 27 experiments was performed in Simulink with different reference force profiles, model parameters and possible disturbances. The results of each experiment were evaluated using Mean Square Error metrics and then compared between the actuators. For all the performed simulations the voice coil shows superior performance compared with the DC-motor and a ball screw. Based on these results, the choice was made to use the voice coil in the pin-on-disc test rig design for investigating the friction variation during a tightening process. The simulations showed a high importance of disc waviness on force variation. Friction occurring in linear actuators is a main concern in accurate performance of reference force profile tracking, and hence the actuators shall be carefully designed and chosen to minimize friction. The developed simulation model shall be validated in the future to prove that the results of the thesis agree with reality. Once the model is validated, it can be used to try different controller architectures and find the one that fits best the reference force profile tracking application.
Examensarbetet utvärderar och jämför två linjära manöverdon för att applicera en last på en stiftmot-skiva tribologitestrigg. Det första manöverdonet är en DC-motor med en kulskruv. Det andra manöverdonet är en talspole. Manöverdonen behöver följa kraftprofilsreferensen som motsvarar kontaktfriktionen i gängorna vid en skruvdragning. En Simulink modell av en stiftmot- skiva testrigg skapades för att jämföra manöverdonen. Styrenheterna för båda manöverdonen designades med samma designmetod. 27 experiment genomfördes i Simulink med varierande kraftreferenser, modellparametrar och störningar. Resultaten av alla experiment utvärderades med det kvadratiska medelvärdet för att jämföra de två manöverdonen. Talspolen var överlägsen DC-motorn med kulskruven i alla experiment. Talspolen användes därför i stiftmot-skiva testriggen för att undersöka friktionsvariationen under en skruvdragning. Simuleringarna visade en stor betydelse av skivvåg på kraftvariation. Friktion som förekommer i linjära ställdon är en viktig fråga vid korrekt prestanda för referenskraftprofilspårning, och därför ska ställdonen utformas noggrant och väljas för att minimera friktionen. Den utvecklade simuleringsmodellen ska valideras i framtiden för att bevisa att avhandlingens resultat överensstämmer med verkligheten. När modellen väl har validerats kan den användas för att prova olika styrenhetsarkitekturer och hitta den som passar bäst i referensstyrningsprofilens spårningsapplikation.
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Xiang, Bin. "Genetic Analysis of Diallel Tests of Loblolly Pine (Pinus taeda L.)." NCSU, 2001. http://www.lib.ncsu.edu/theses/available/etd-20010105-093243.

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AbstractBIN XIANG Genetic Analysis of Diallel Tests of Loblolly Pine (Pinus taeda L.) (Under the direction of Dr. Bailian Li)A new approach was developed for analyzing diallel tests with SAS PROC MIXED and PROC IML. The new method can estimate variance components, obtain BLUE (best linear unbiased estimators) of fixed effects and BLUP (best linear unbiased predictors) of random genetic effects simultaneously. A new formula based on BLUP was further developed to predict individual tree breeding values. This new analytical method was validated using computer simulation and was compared with other existing programs. To analyze disconnected diallel mating designs with more than one diallel, simulated data generated with known parameters were analyzed using BLUP to compare three alternative models, which include diallel as fixed effect (Model 1), random effect (Model 2) or no diallel effect (Model 3). Both Model 1 and Model 3 produced unbiased GCA (general combining ability) variance estimates, while Model 2 resulted in downward biased GCA variance estimate. The accuracy of BLUP prediction for three models was very close, with Model 3 slightly better than the other two. Statistical approaches were also evaluated for combining multiple disconnected diallel test series in a given region. The best GCA sample variance prediction in the class of linear combination of local variance estimates was derived. Simulation study showed that a checklot adjustment was very critical to improve the prediction of genetic values obtained using BLUP analysis. Additional adjustment with improved GCA sample variance prediction could improve the correlation slightly beyond checklot adjustment.Analysis of annual measurement through age 8 from a total of 275 parents, 690 full-sib families from 23 diallel tests of loblolly pine in Northern, Coastal and Piedmont test regions showed: 1) dominance variance was small (20-40% of total genetic variance) relative to additive variance; 2) heritability increased over time, and the magnitude of heritabilities for diameter at breast height (DBH) and volume was comparable with the corresponding heritabilities for height; 3) DBH and volume had higher genetic correlation with 8-year volume than height. Genetic gain prediction in year-8 volume for selection on height and volume indicated that: 1) selection on volume yielded more gain than selection on height; 2) Coastal population had the greatest correlated response, followed by Piedmont and Northern population; 3) family plus within family selection based on total genetic component can capture the most genetic gain; 4) for all selection methods, additional gain (10-40%) can be achieved by capturing non-additive genetic component.Selection efficiency study of height and volume for three test regions indicated that earlier selection appeared to be more efficient than direct selection on year-8 volume in most selection methods. Family selection can be performed at age 2 or 3 for height and at age 4 for DBH and volume. Combined selection (family plus within family) was highly efficient at age 3 or 4.

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Schöpf, Roberto Alexandre. "Estudo do desgaste abrasivo e adesivo em aços ferramenta por meio do ensaio de pino-disco." Universidade do Estado de Santa Catarina, 2011. http://tede.udesc.br/handle/handle/1776.

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Among several mechanisms of wear of materials, abrasive and adhesive wear respond for the largest contribution in tools and equipment failures at the mechanical industry. Tooling used in the manufacture of stators, known as lamella, fails due to these types of wear. The failures have origin in sliding wear and remove the enamel from the wire of the stator during the injection process. The removal of enamel results in short circuit between turns and consequent risk for the final consumer. It is common to correlate the wear resistance as a function dependent only on hardness of the involved materials in contact, however, there are other characteristics that also influence the wear such as: the type of crystalline structure and the presence of precipitates in the metal matrix, as well as the nature of them. The present study has analyzed the wear mechanisms existent in tool wear. The pin-on-disc test was used to evaluate eight different tool steels, positioning them in the same scale and comparing with the steel currently used at the process. Two groups of tool steels were evaluated, those manufactured by powder metallurgy and those obtained by conventional metallurgical method. Two types of pin-on-disc tests were performed. In the first test, as counter-face or disc, a grinding wheel made with silicon carbide was used; the main objective of this test was to evaluate the abrasive wear resistance. In the second test, the discs were manufactured using low alloy electric steel; the wear resistance predominantly adhesive was the response variable for this test. The results were correlated with some characteristics of the steels studied: hardness, the energy absorbed during Charpy impact test, density and content of alloying elements that are hard carbide formers. The results have shown a better wear resistance for steels produced by the Powder Metallurgy process. Steels with higher levels of alloying elements achieve better results, particularly in the adhesive wear test. CPM9V and Sinter 30 tool steels presented the best performances for wear resistance. Considering the application of these results in operation conditions, the CPM9V steel has advantage of a lower hardness and consequently greater toughness which is an important characteristic as well.
Entre os diversos mecanismos de desgaste, os desgastes abrasivo e adesivo são os que respondem pela maior contribuição nas falhas em equipamentos e ferramentais da indústria mecânica. Ferramentas utilizadas na fabricação de estatores, conhecidas como lamelas, falham em decorrência destes tipos de desgaste. As falhas têm procedência no desgaste por deslizamento e provocam remoção do isolante dos fios do estator durante o processo de inserção. A remoção do esmalte resulta em curto circuito entre espiras e conseqüente risco ao usuário final. É comum relacionar a resistência ao desgaste como uma função dependente apenas da dureza dos materiais envolvidos, no entanto, existem outras características que também influenciam no desgaste, tais como: o tipo de estrutura cristalina, existência de precipitados na matriz metálica e sua homogeneidade, bem como, a natureza dos mesmos. Por meio do presente estudo, analisaram-se os mecanismos presentes no desgaste de aços ferramenta utilizados na fabricação de estatores. Utilizandose o teste pino-disco, avaliou-se a resistência ao desgaste de oito diferentes aços ferramenta, classificando-os quanto à resistência ao desgaste e situando-os frente ao aço atualmente utilizado neste processo. Dois grupos de aços foram avaliados, os fabricados pela metalurgia do pó e os obtidos pelo método convencional de metalurgia. Dois tipos de ensaios pino-disco foram realizados. No primeiro teste, como contra-face ou disco, foi utilizado um rebolo de carbeto de silício; neste teste o objetivo principal foi avaliar a resistência ao desgaste abrasivo. No segundo teste, o disco foi fabricado com aço de baixa liga, neste teste, a resistência ao desgaste predominantemente adesivo foi à variável resposta. Os resultados obtidos foram correlacionados com determinadas características dos aços estudados: dureza, energia absorvida no impacto do ensaio Charpy, densidade, percentual de elementos de liga formadores de carbonetos de alta dureza e microestrutura. Os resultados mostraram que os aços fabricados pelo processo de Metalurgia do Pó apresentaram maiores resistências ao desgaste. Os aços ferramenta com teores maiores de elementos de liga obtiveram melhores resultados, sobretudo no ensaio de resistência ao desgaste adesivo. Os aços ferramenta CPM9V e Sinter 30 foram os que apresentaram maior desempenho na resistência ao desgaste. Considerando a aplicação deste resultados nas condições de operação, o aço CPM9V possui como vantagem uma menor dureza e conseqüente maior tenacidade, característica também importante para a função.
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Gaskill, Sally Ann. "A detailed investigation of acoustic distortion from human and guinea-pig ears." Thesis, University of Sussex, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240009.

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Books on the topic "Ping test"

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Kongzi xue yuan. Zong bu, ed. Xin Han yu shui ping kao shi da gang HSK liu ji. Beijing: Shang wu yin shu guan, 2010.

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Ri ben yu jian ding xie hui, ed. J.TEST kao shi zhi nan: Yu fa, ci hui : E-F ji. Shang hai: Hua dong li gong da xue chu ban she, 2012.

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Sun, Fengrong. Xian dai lei da zhuang bei zong he shi yan yu ping jia: Moden rader equipment integrated test and evaluation. Beijing: Guo fang gong ye chu ban she, 2013.

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Bovetz, Marcie. The pink tent. Bothell, WA: Wright Group, 1999.

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Xue xiao jiao yu ping jia. Beijing: Zhong yang min zu xue yuan chu ban she, 1987.

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Haverbeke, David F. Van. Genetic variation in eastern white pine: A 15- year test of provenances in eastern Nebraska. Fort Collins, Colo: U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1988.

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Henan sheng ren cai yan jiu suo, ed. Ren yuan ce ping yu ren shi guan li. [Zhengzhou shi]: Henan ren min chu ban she, 1987.

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GMAT tian kong shi zuo wen fa. Shanghai Shi: Shi jie tu shu chu ban gong si, 2000.

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Powers, H. R. Resistance of loblolly pine sources to fusiform rust in field progeny tests. Asheville, N.C: U.S. Dept. of Agriculture, Forest Service, Southeastern Forest Experiment Station, 1987.

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Powers, H. R. Resistance of loblolly pine sources to fusiform rust in field progeny tests. Asheville, N.C: U.S. Dept. of Agriculture, Forest Service, Southeastern Forest Experiment Station, 1987.

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Book chapters on the topic "Ping test"

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Huhn, Sebastian, and Rolf Drechsler. "Embedded Multichannel Test Compression for Low-Pin Count Test." In Design for Testability, Debug and Reliability, 105–21. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-69209-4_7.

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Tapking, Christian, Daniel Popp, and Ludwik K. Branski. "Pig Model to Test Tissue-Engineered Skin." In Skin Tissue Engineering, 239–49. New York, NY: Springer New York, 2019. http://dx.doi.org/10.1007/978-1-4939-9473-1_19.

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Kligman, A. M. "A Reappraisal of the Guinea Pig Maximization Test." In Fragrances, 153–58. Berlin, Heidelberg: Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-642-80340-6_19.

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Tahara, Mitsuho, Naoki Tateishi, Toshio Oimatsu, and Souhei Majima. "A Method to Detect Prefix Hijacking by Using Ping Tests." In Lecture Notes in Computer Science, 390–98. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-88623-5_40.

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Xiong, Feng, Hua-Li Zhang, Guo Li, Hui Liu, Ke Wang, Jing Huang, and Yu Dai. "Development and Application of Test Equipment for Pin Shear Value." In Proceedings of the International Field Exploration and Development Conference 2021, 4245–52. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-2149-0_397.

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Andersson, Peter. "Pin-on-Disc Tests with Ceramics in Air and Aqueous Media." In 4th International Symposium on Ceramic Materials and Components for Engines, 1240–47. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2882-7_139.

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Laschi-Loquerie, A., P. Tachon, C. Veysseyre, and J. Descotes. "Macrophage Migration Inhibition Test to Evaluate the Sensitizing Potential of Drugs in the Guinea Pig." In Mechanisms and Models in Toxicology, 325–28. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-72558-6_64.

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Przybylowicz, Eric, Boian Alexandrov, John Lippold, and Steven McCracken. "Weldability Evaluation of High Chromium, Ni-Base Filler Metals Using the Cast Pin Tear Test." In Cracking Phenomena in Welds IV, 269–88. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-28434-7_13.

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Schröder, Stephan. "Pind. fr. 128 c [Sn. -] M. (test. 1 Käppel) als Kardinalzeugnis für den Paianbegriff des fünften Jahrhunderts." In Geschichte und Theorie der Gattung Paian, 9–10. Wiesbaden: Vieweg+Teubner Verlag, 1999. http://dx.doi.org/10.1007/978-3-663-12141-1_3.

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Alexandrov, B. T., and John Lippold. "Further Development of the Cast Pin Tear Test for Evaluating Solidification Cracking in Ni-Base Alloys." In Hot Cracking Phenomena in Welds III, 317–31. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-16864-2_16.

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Conference papers on the topic "Ping test"

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Zamani, Masoud, Mehdi B. Tahoori, and Krishnendu Chakrabarty. "Ping-pong test: Compact test vector generation for reversible circuits." In 2012 IEEE 30th VLSI Test Symposium (VTS). IEEE, 2012. http://dx.doi.org/10.1109/vts.2012.6231097.

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Wang, Kai, Fengkai Yuan, Rui Hou, Zhenzhou Ji, and Dan Meng. "Capturing and Obscuring Ping-Pong Patterns to Mitigate Continuous Attacks." In 2020 Design, Automation & Test in Europe Conference & Exhibition (DATE). IEEE, 2020. http://dx.doi.org/10.23919/date48585.2020.9116509.

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Yamashita, Takahiro, and Takeshi Kobayashi. "Smart ping pong racket by ultrathin piezoelectric strain sensor array." In 2018 Symposium on Design, Test, Integration & Packaging of MEMS and MOEMS (DTIP). IEEE, 2018. http://dx.doi.org/10.1109/dtip.2018.8394237.

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Chen, Chern-Hwa, Jane W. Z. Lu, Andrew Y. T. Leung, Vai Pan Iu, and Kai Meng Mok. "Structural Monitoring and Field Test for Kao Ping Hsi Cable-Stayed Bridge in Taiwan." In PROCEEDINGS OF THE 2ND INTERNATIONAL SYMPOSIUM ON COMPUTATIONAL MECHANICS AND THE 12TH INTERNATIONAL CONFERENCE ON THE ENHANCEMENT AND PROMOTION OF COMPUTATIONAL METHODS IN ENGINEERING AND SCIENCE. AIP, 2010. http://dx.doi.org/10.1063/1.3452079.

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Alcini, William V., Jason C. Johnson, and Dale Osterkamp. "Test Measurement Technique for Vehicle Cool Down Thermal Noises (Tick, Ping, Tink, Crinkle, Crackle)." In SAE World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2009. http://dx.doi.org/10.4271/2009-01-0414.

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Meshram, B. B. Meshram, Mittal S.Bhiogade, and T. R. Sontakke Sontakke. "Network Monitoring Tool." In 2002 Informing Science + IT Education Conference. Informing Science Institute, 2002. http://dx.doi.org/10.28945/2536.

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A Network Monitoring Tool “NETMON” is presented in this paper We have developed the tool that will Monitor the Network of any company say “XYZ” by performing certain Tests. NETMON will monitor the network by performing certain tests such as ping test, memory test, disk test, uptime test and URL test that would help to analyze where exactly the problem lies in the Network. The Results of the Tests are displayed in the forms of graphs that can be viewed on the browser. These Tests will produce the Results as the ouput, which will be stored in the database. Test Graphs will be generated from the Test Results stored in the database. These Test Graphs will help us to analyze where and at what time in the Network the congestion had occurred.
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Del Turco, Paolo, Michele D’Ercole, Francesco Gamberi, Roberto De Prosperis, Nicola Pieroni, and Massimiliano Mariotti. "Modelling and Measuring Experiences to Evaluate the Modal Behaviour of an Industrial Gas Turbine High Pressure Bucket." In ASME Turbo Expo 2007: Power for Land, Sea, and Air. ASMEDC, 2007. http://dx.doi.org/10.1115/gt2007-27459.

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In gas turbines, High Cycle Fatigue (HCF) bucket failures are mainly prevented by avoiding resonance frequencies in the operative range. Due to the high number of stimuli present, avoiding potential resonance crossings is often not possible. In these cases, failures can be avoided by controlling vibratory stress levels in order not to exceed high cycle fatigue endurance limits. This paper describes the processes used in GE Infrastructure, Oil&Gas to design, develop and test a new high-pressure turbine bucket for a 32 MW-class industrial gas turbine for mechanical drive and power generation applications. Initial design phases, material selection, concurrent engineering efforts, bench testing characterization and final validation on FETT (First Engine to Test) are described. A particular focus is given to the analytical tools (i.e. Modal Cyclic Analysis) used in the design phase and the validation tests (i.e. Ping Test and Laser Doppler Vibration) including the development of a dedicated instrumentation technique, which allowed the unit not to be disassembled (High Temperature Strain Gauge Splicing).
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Huang, Erick T., Duane A. Davis, C. H. Kim, and H. C. Chen. "Measurements of Transient Flow Induced by a Berthing Barge in a Towing Tank." In SNAME 25th American Towing Tank Conference. SNAME, 1998. http://dx.doi.org/10.5957/attc-1998-031.

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A test program was conducted to collect essential experimental data required to validate a ship-berthing simulation model based on the Chimera RANS/free­surface technique. This technique has demonstrated a unique capability of describing critical features of the transient flow induced by a berthing ship. Validating experiments were conducted in a shallow water basin. A model barge was drawn transversely through calm water by a towing carriage toward a solid, vertical quay wall in a manner similar to a regular berthing process. The transier.t water flow induced by the moving barge was recorded with acoustic doppler velocity meters mounted on the barge and at six fixed locations within the basin. Flows leading, trailing, passing under the keel and around the ends of the barge were observed. The test parameters considered included approach speed, water depth and angle of approach. The flow pattern at the free surface was observed using floating ping-pong balls, while flow pattern at the bottom of the basin were observed using neutrally buoyant beads. A number of noteworthy findings and observations relating to flow and reversal of flow are included in the remarks section of this paper. The model basin tests produced good comparisons between measured current velocity and water currents predicted by the simulation model. The large volume of water trailing the barge was shown to contribute significantly to the resulting berthing energy, especially in those runs where water depth was small compared to ship draft.
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Higuchi, Hidetoshi, Kenji Koizumi, Hiroyasu Hirano, Masayuki Tasaka, Tadahiro Washiya, and Tsuguyuki Kobayashi. "Development of Short Stroke Shearing Technology for FBR Fuel Pins." In 17th International Conference on Nuclear Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/icone17-75125.

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The short stroke shearing tests with simulated fuel pin bundle were carried out in engineering scale. The shearing device was designed to handle the simulated Monju (FBR prototype reactor) type fuel pin bundle. Monju type and Commercial reactor type simulated fuel pins were used for the test. The length of sheared pin and the opening ratio of sheared section were measured under several shearing settings such as the pressure to hold pin bundle, the shearing speed and the filling-ratio of pins in the pin magazine. Both types of fuel pin were able to be sheared accurately at the length of about 10mm, and the opening ratio of sheared section was not significantly reduced. As the results, fundamental data of the short stroke shearing characteristics were obtained and that shearing method was confirmed to be promising with the reliable shearing device.
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Gaumer, Dale. "PIWG test results." In the working group. New York, New York, USA: ACM Press, 1990. http://dx.doi.org/10.1145/322807.322857.

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Reports on the topic "Ping test"

1

Adkins, H. E. Jr. Pig shipping container test sequence. Office of Scientific and Technical Information (OSTI), January 1995. http://dx.doi.org/10.2172/10118815.

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Cao Romero, Julio A., Jorge Reyes-Avendaño, Julio Soriano, Leonardo Farfan-Cabrera, and Ali Erdemir. A Pin-on-Disc Study on the Electrified Sliding Wear of EVs Powertrain Gears. SAE International, March 2022. http://dx.doi.org/10.4271/2022-01-0320.

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In contrast to conventional powertrains from internal combustion engine vehicles (ICEV), the tribological performance of powertrains of electric vehicles (EVs) must be further evaluated by considering new critical operating conditions such as electrical environments. The operation of any type of electric motor produces shaft voltages and currents due to various hardware configurations and factors. Furthermore, the common application of inverters intensifies this problem. It has been reported that the induced shaft voltages and currents can cause premature failure problems in tribological components such as bearings and gears due to accelerated wear and/or fatigue. It is ascribed to effects of electric discharge machining (EDM), also named, sparking wear caused by shaft currents and poor or increasingly diminishing dielectric strength of lubricants. A great effort has been done to study this problem in bearings, but it has not yet been the case for gears. Considering that EVs powertrains can be configurated with an electric motor coupled to a single-speed or multi-speed transmission, it is expected that shaft currents can also affect gears to some extent. The pin-on-disc test has been widely used to study sliding wear of gear materials under comparable or realistic operating conditions. This accelerated test is effective for screening materials, lubricants and operating conditions allowing evaluations of their friction and wear properties. However, it has not been implemented for studying gear materials under electrified environments. Thus, this paper aims to explore the friction coefficient and wear of gear materials under non-electrified and electrified sliding in a pin-on-disc tester applying typical of EVs powertrain shaft currents during sliding. The tests were carried out at two different DC currents under comparable gear dry and lubricated sliding contact conditions. Friction coefficient, wear volumes and morphologies were evaluated and reported in this work.
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Laurain, Martin P. Track Pin Testing Procedure. Hammer Ring Test Evaluation. Fort Belvoir, VA: Defense Technical Information Center, January 1993. http://dx.doi.org/10.21236/ada264413.

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Nod, J. C., F. L. Hastings, and A. S. Jones. Field Tests of Pine Oil as a Repellent for Southern Pine Bark Beetles. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southeastern Forest Experiment Station, 1990. http://dx.doi.org/10.2737/se-rn-355.

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BOGER, R. M. Pintle Rod Qualification Test Plan and Report for Roll Pin Relocation. Office of Scientific and Technical Information (OSTI), November 1999. http://dx.doi.org/10.2172/798675.

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Saltzstein, Sylvia J., Ken B. Sorenson, Brady Hanson, Mike Billone, John Scaglione, Rose Montgomery, and Bruce Bevard. EPRI/DOE High Burnup Fuel Sister Pin Test Plan Simplification and Visualization. Office of Scientific and Technical Information (OSTI), July 2017. http://dx.doi.org/10.2172/1372773.

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Snelgrove, J. L., R. F. Domagala, and L. R. Dates. Requalification of SPERT (Special Power Excursion Reactor Test) pins for use in university reactors. Office of Scientific and Technical Information (OSTI), December 1986. http://dx.doi.org/10.2172/6346316.

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Van Haverbeke, David F. Genetic variation in ponderosa pine: A 15-year test of provenances in the Great Plains. Ft. Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1986. http://dx.doi.org/10.2737/rm-rp-265.

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Powers, H. R., and E. G. Kuhlman. Resistance of Loblolly Pine Sources to Fusiform Rust in Field Progeny Tests. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southeastern Forest Experiment Station, 1987. http://dx.doi.org/10.2737/se-rp-268.

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Cunningham, Richard A., and David F. Van Haverbeke. Twenty-two year results of a Scots pine (Pinus sylvestris L.) provenance test in North Dakota. Ft. Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1991. http://dx.doi.org/10.2737/rm-rp-298.

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