Zeitschriftenartikel: „Motorised stage“

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Ryley, Tim. „Use of non-motorised modes and life stage in Edinburgh“. Journal of Transport Geography 14, Nr. 5 (September 2006): 367–75. http://dx.doi.org/10.1016/j.jtrangeo.2005.10.001.

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Stevens, M. M., D. R. Hughes und A. Phillips. „A MOTORISED ROTARY STAGE FOR SCANNING ELECTRON MICROSCOPY: USEFUL FOR THE EXAMINATION OF INSECTS“. Australian Journal of Entomology 26, Nr. 1 (Februar 1987): 65–66. http://dx.doi.org/10.1111/j.1440-6055.1987.tb00261.x.

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Baran, Jolanta, Daria Tandos und Iwona Żabińska. „Comparative Analysis of Selected Car Parks“. Multidisciplinary Aspects of Production Engineering 4, Nr. 1 (01.09.2021): 365–75. http://dx.doi.org/10.2478/mape-2021-0033.

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Abstract Statistics from the Central Statistical Office (CSO) state that the total number of motor vehicles and mopeds in Poland in 2019 was 31,989,313 units. According to the Central Register of Vehicles (CEPiK) maintained by the Ministry of Digitalisation, the number of motor vehicles registered in Poland in 2019 was 23,878.8 thousand units. Among them, 18,302.4 thousand passenger cars were registered. The constantly increasing number of vehicles on the road has a significant impact on the deterioration of road capacity and drivers’ frustration with parking, especially during rush hours in the centres of large cities. Hence, urban logistics, including the country’s parking policy, is extremely important to a significant proportion of citizens. Unfortunately, citizens have different perspectives on parking issues. Most drivers expect to be able to leave their car as close as possible to their destination, while some residents, especially non-motorised ones, are against the conversion of free city space into car parks. In response to the presented issues, a comparative analysis of selected types of car parks was carried out. This analysis was one of the stages of the project entitled: “Analysis of the environmental impact of a vertical parking solution using life cycle assessment at the design stage” carried out at the Silesian University of Technology.

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Reeh, Andreas D., und C. Tropea. „Behaviour of a natural laminar flow aerofoil in flight through atmospheric turbulence“. Journal of Fluid Mechanics 767 (16.02.2015): 394–429. http://dx.doi.org/10.1017/jfm.2015.49.

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AbstractAtmospheric turbulence is encountered frequently in flight and it creates oncoming flow disturbances of varying direction and magnitude for aircraft passing through turbulent zones. The unique measurement set-up on a motorised glider enables the investigation of the flow processes acting on a laminar wing section in flight through atmospheric turbulence. The expected quasi-steady aerofoil characteristics are deduced from an investigation of boundary-layer transition under calm flight conditions. Spanwise frequency–wavenumber spectra and comparisons with linear stability theory (LST) yield insight into the linear and weakly nonlinear stages of transition. Simultaneous measurement of the oncoming flow, characteristic flow quantities on the wing section and the motion of the aerofoil enables correlations between these quantities and provides insight into the unsteady flight physics. Emphasis is placed on the response of laminar–turbulent transition to moderate free-stream turbulence on both sides of the wing section. On the lower side of the aerofoil significant and rapid upstream fluctuations of transition are observed, which correspond closely to variations in the pressure distribution. Wavelet analysis is applied to gain insight into the composition of these streamwise excursions of the transition front in the time-pseudo-frequency domain. It is shown that they are driven by rapid transient base-flow changes and that transition is initiated by a short growth stage of Tollmien–Schlichting (TS) waves.

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Van Ranst, Gerben, Philippe Baert, Ana Clara Fernandes und Johan De Grave. „Technical note: Nikon–TRACK<i>Flow</i>, a new versatile microscope system for fission track analysis“. Geochronology 2, Nr. 1 (23.04.2020): 93–99. http://dx.doi.org/10.5194/gchron-2-93-2020.

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Abstract. We present Nikon–TRACKFlow, a new system with dedicated modules for automated microscope control and imaging for the fission track laboratory. It serves as a Nikon alternative for the Zeiss-based TrackWorks package from Autoscan Systems. Nikon–TRACKFlow is based on the Nikon Eclipse Ni-E motorised upright microscope and is embedded within Nikon NIS-Elements software. The system decouples image acquisition from analysis to decrease schedule stress of the microscope based on a number of automated user-friendly designs and protocols: (1) the well plate design that allows sequential scanning of multiple samples without the need of replacing the slide on the stage; (2) two protocols that are designed for the external detector method and the LA–ICP–MS fission track approach with tools for repositioning and calibration of the external detector; and (3) two other tools that are designed for automated point selection and scanning of large crystals, such as the Durango age standard and U-doped glass external detectors. In future versions, Nikon–TRACKFlow aims to step away from the dedicated system for fission track imaging towards a general high-throughput imaging system for Earth Sciences and other material-oriented sciences.

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Ramuz, Masoud, Alveera Hasan, Lena Gruscheski, Ivan Diakonov, Nikoleta Pavlaki, Viacheslav O. Nikolaev, Sian Harding, Chris Dunsby und Julia Gorelik. „A Software Tool for High-Throughput Real-Time Measurement of Intensity-Based Ratio-Metric FRET“. Cells 8, Nr. 12 (29.11.2019): 1541. http://dx.doi.org/10.3390/cells8121541.

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Förster resonance energy transfer (FRET) is increasingly used for non-invasive measurement of fluorescently tagged molecules in live cells. In this study, we have developed a freely available software tool MultiFRET, which, together with the use of a motorised microscope stage, allows multiple single cells to be studied in one experiment. MultiFRET is a Java plugin for Micro-Manager software, which provides real-time calculations of ratio-metric signals during acquisition and can simultaneously record from multiple cells in the same experiment. It can also make other custom-determined live calculations that can be easily exported to Excel at the end of the experiment. It is flexible and can work with multiple spectral acquisition channels. We validated this software by comparing the output of MultiFRET to that of a previously established and well-documented method for live ratio-metric FRET experiments and found no significant difference between the data produced with the use of the new MultiFRET and other methods. In this validation, we used several cAMP FRET sensors and cell models: i) isolated adult cardiomyocytes from transgenic mice expressing the cytosolic epac1-camps and targeted pmEpac1 and Epac1-PLN sensors, ii) isolated neonatal mouse cardiomyocytes transfected with the AKAP79-CUTie sensor, and iii) human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CM) transfected with the Epac-SH74 sensor. The MultiFRET plugin is an open source freely available package that can be used in a wide area of live cell imaging when live ratio-metric calculations are required.

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Komissarov, Dmitrij, Artūras Kilikevičius und Artur Piščalov. „RESEARCH OF LINEAR TRANSLATION DEVICES WITH STEPPER MOTOR / LINIJINIŲ POSLINKIŲ ĮTAISŲ SU ŽINGSNINIAIS VARIKLIAIS TYRIMAS“. Mokslas – Lietuvos ateitis 7, Nr. 6 (01.04.2016): 632–36. http://dx.doi.org/10.3846/mla.2015.856.

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In order to ensure accuracy of motorized linear translation stages theoretical and experimental investigations were performed, that allow to establish moving platform vibration level depending of operating modes (different velocities) and used lubricant in the system. Lubricants had different viscosity, which has effect to the system moving smoothness, sound level and vibration level of the stage. Such work gives possibility to done conclusions: with what lubricant or with what viscosity of the lubricant motorized linear translation stage works smoother, with less noise and vib-ration level, and also show best movement characteristics. Siekiant užtikrinti linijinių poslinkių įtaisų tikslumą, buvo atlikti linijinio poslinkio įtaiso su žingsniniu varikliu teoriniai ir eksperimentiniai dinamikos tyrimai. Buvo nustatytas judamosios platformos virpesių lygis priklausomai nuo darbo režimų (skirtingų greičių) ir mazge naudojamo tepalo. Tepalai skiriasi savo klampumu. Šis parametras turi įtakos įtaiso judėjimo sklandumui ir virpesių lygiui mazge.

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Sun, Hai Ming, Jing Jin und Bai Lin Ren. „Precision Lifetime Analysis and Grey Prediction Based on Observation Data for Motorized Spindle“. Applied Mechanics and Materials 421 (September 2013): 81–87. http://dx.doi.org/10.4028/www.scientific.net/amm.421.81.

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The stoppage and lifetime of high speed motorized spindle was related to many influence. A total of 31 statistical lifetime data of imported motorized spindles in cylinder head production line were presented, according to these data, and the average cut operation lifetime could reach 8277 hours, and the 8000 hours of average design precision lifetime was validated. It was found that the main influencing factors of motorized spindle lifetime in initial stage were the original manufacturing defects, also in precision lifetime stage and fatigue lifetime stage, the main influencing factors were the service conditions which exceeded design allowable conditions and own unique structural characteristics of motorized spindle respectively. according to 7 data and GM(1,1) grey theory, the precision lifetime prediction model of motorized spindle was built and the. model error was tested. The reliability of prediction model is validated by 2 inchoate reality observation data which relative differences were 0.57% and 2.03% respectively.

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Vincent, Grace E., Charlotte C. Gupta, Madeline Sprajcer, Corneel Vandelanotte, Mitch J. Duncan, Phil Tucker, Michele Lastella, Georgia A. Tuckwell und Sally A. Ferguson. „Are prolonged sitting and sleep restriction a dual curse for the modern workforce? a randomised controlled trial protocol“. BMJ Open 10, Nr. 7 (Juli 2020): e040613. http://dx.doi.org/10.1136/bmjopen-2020-040613.

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IntroductionProlonged sitting and inadequate sleep are a growing concern in society and are associated with impairments to cardiometabolic health and cognitive performance. However, the combined effect of prolonged sitting and inadequate sleep on measures of health and cognitive performance are unknown. In addition, the circadian disruption caused by shiftwork may further impact workers’ cardiometabolic health and cognitive performance. This protocol paper outlines the methodology for exploring the impact of simultaneous exposure to prolonged sitting, sleep restriction and circadian disruption on cardiometabolic and cognitive performance outcomes.Methods and analysisThis between-subjects study will recruit 208 males and females to complete a 7-day in-laboratory experimental protocol (1 Adaptation Day, 5 Experimental Days and 1 Recovery Day). Participants will be allocated to one of eight conditions that include all possible combinations of the following: dayshift or nightshift, sitting or breaking up sitting and 5 hour or 9 hour sleep opportunity. On arrival to the laboratory, participants will be provided with a 9 hour baseline sleep opportunity (22:00 to 07:00) and complete five simulated work shifts (09:00 to 17:30 in the dayshift condition and 22:00 to 06:30 in the nightshift condition) followed by a 9 hour recovery sleep opportunity (22:00 to 07:00). During the work shifts participants in the sitting condition will remain seated, while participants in the breaking up sitting condition will complete 3-min bouts of light-intensity walking every 30 mins on a motorised treadmill. Sleep opportunities will be 9 hour or 5 hour. Primary outcome measures include continuously measured interstitial blood glucose, heart rate and blood pressure, and a cognitive performance and self-perceived capacity testing battery completed five times per shift. Analyses will be conducted using linear mixed models.Ethics and disseminationThe CQUniversity Human Ethics Committee has approved this study (0000021914). All participants who have already completed the protocol have provided informed consent. Study findings will be disseminated via scientific publications and conference presentations.Trial registration detailsThis study has been registered on Australian New Zealand Clinical Trials Registry (12619001516178) and is currently in the pre-results stage.

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Nam, J., K. B. Ahn, M. Cho, S. Jeong, J. E. Kim, S. Ahmad, P. Barrillon et al. „Development of Motorized Slewing Mirror Stage for the UFFO Project“. EAS Publications Series 61 (2013): 573–77. http://dx.doi.org/10.1051/eas/1361092.

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EIMardi, M. O., H. Esechie, L. M. Al-Kharousi und K. M. Abdelbasit. „Effect of Pollination Method on Changes in Physical and Chemical Characteristics of Date Fruit During Development“. Journal of Agricultural and Marine Sciences [JAMS] 7, Nr. 1 (01.01.2002): 21. http://dx.doi.org/10.24200/jams.vol7iss1pp21-27.

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Date palms were pollinated by hand, hand duster and motorized duster. Pollen for the hand and motorized dusters was diluted with wheat flour each at 1:5, 1:7, 1:9 and 1:14 ratios. Fruit samples were collected during ‘Hababook’, ‘Kimri’, ‘Bisir’, ‘Rutab’, and ‘Tamr’ stages. Chemical and physical characteristics were determined in the laboratory. The motorized duster produced lower fruit set than the hand duster. No significant effect of pollination method on yield was observed. None of the physical or chemical differences that appeared during the same stage of fi'uit development proved to be an indicator of maturity. During ‘Kimri’, more fiuits with higher pectin (late maturing) were produced by the motorized duster than those produced by hand pollination and hand duster. But the motorized duster produced fi'uits with larger volume (i.e. ‘Rutab’ and ‘Tarnr’) than those of hand pollination. However, the reduction in acidity between ‘Bisir’ and ‘Rutab’ and in volume between ‘Rutab’ and ‘Tamr’ clearly indicated early maturity of the hand-pollinated fruits. The reduction in acidity between ‘Rutab’ and ‘Tamr’ indicated that hand-pollinated fruits ripen at a slower rate than the fruits of mechanized pollination at any of the pollen to flour ratios. The latter case could be attributed to the conversion of the acids to the dark pigmentation of ‘Tamr’. The lowest pollen : flour ratio (1:14) produced the lowest yield, moderate Fruit set and highest dry matter, whereas the highest ratio (1:5) produced a lower sucrose and dry matter and higher yield.

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Maunde, F. A., M. A. Ali, A. El Okene und S. A. Iya. „Evaluation of Kinematics and Ergonomic Studies of Groundnut Oil Extraction Methods“. Advanced Materials Research 18-19 (Juni 2007): 151–58. http://dx.doi.org/10.4028/www.scientific.net/amr.18-19.151.

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Comparative evaluation of kinematics and ergonomic studies of traditional and motorized kneading methods for extraction of groundnut oil was conducted. Moisture and oil contents of Samnut-10 used was found to be 7.3% and 43.6 % respectively. Subject’s energy capacity per day was 0.548 kcal / day. The average throughput capacities of kneading 5.5kg groundnut paste for traditional and motorized kneading methods were 0.56 kg / minute and 0.87 kg / minute respectively. Average weights of oil obtained and extraction efficiency for the said quantity for the traditional and motorized kneader were: (1.6kg, 1.7 kg) and (82.4 %, 91.33 %) respectively. At the oil forming stage, the drudgery of kneading in traditional method was eliminated by the motorized kneader via the fingers attached to the shaft in the hopper.

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Zhang, Zhaojie. „Multi-Axial Stage for a Stereo Dissecting Microscope“. Microscopy Today 14, Nr. 5 (September 2006): 48–49. http://dx.doi.org/10.1017/s1551929500058697.

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The stereo dissecting microscope is a widely used instrument for macro-structure observation and documentation. The emergence of digital imaging, along with sophisticated imaging software, makes this macro-imaging more efficient. It also makes possible certain special imaging modes that are difficult to accomplish with traditional (film) imaging, such as extended depth of focus imaging ( EDF), automatic mont aging, etc. These special imaging techniques often require dedicated hardware on the microscope, such as a motorized stage.

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Du, Xuejiao, Jingbo Gai und Cen Chen. „Condition-Based Maintenance Optimization for Motorized Spindles Integrating Proportional Hazard Model with SPC Charts“. Mathematical Problems in Engineering 2020 (21.07.2020): 1–11. http://dx.doi.org/10.1155/2020/7618376.

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Reliability of motorized spindles has a great effect on the performance and productivity of computer numerical control (CNC) machine tools for intelligent manufacturing. Condition-based maintenance (CBM) is an efficient method to prevent serious failures, to improve system reliability, and to reduce management costs for motorized spindles. However, owing to various degradation features acquired during condition monitoring, the challenge is to propose an appropriate feature to evaluate the reliability level of motorized spindles and to set up optimal CBM policies. Based on the motivation, a three-stage approach is proposed in this paper. In the first stage, proportional hazard model (PHM) is developed to describe the reliability considering failure events together with multiple degradation features. Next, statistical process control (SPC) charts are constructed for condition monitoring and anomaly detection in order to achieve early detection of potential failures. At last, a CBM schedule is modeled in consideration of maintenance cost minimization; the maintenance plan is optimized by determining the optimal control limits of SPC charts.

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Zhang, Wei, Chao Jin, Yuan Liu Chen und Bing Feng Ju. „Dual-Servo Mechanism of STM for Measurement of Sub Millimeter Deep Trench Structures“. Advanced Materials Research 497 (April 2012): 146–50. http://dx.doi.org/10.4028/www.scientific.net/amr.497.146.

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This paper presents a new control method of the Z-direction module of STM (scanning tunnel microscope). The major component of our method is a dual-servo mechanism, which is consist of a PZT (Piezoelectric Transducer) and a motorized micro displacement stage. Traditionally, STM employs PZT as the servo scanner, which provides very high precision but has a small range. The mean idea of our method is compensating the insufficient measuring range of the PZT through a motorized micro displacement stage. Our method succeeds to eliminates the limitation of measuring range of PZT and enlarges the vertical measurement scale of STM from sub-micrometer to sub-millimetre.

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Yilmaz, H., und M. Kamil Turan. „FahamecV1:A Low Cost Automated Metaphase Detection System“. Engineering, Technology & Applied Science Research 7, Nr. 6 (18.12.2017): 2160–66. http://dx.doi.org/10.48084/etasr.1464.

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In this study, FahamecV1 is introduced and investigated as a low cost and high accuracy solution for metaphase detection. Chromosome analysis is performed at the metaphase stage and high accuracy and automated detection of the metaphase stage plays an active role in decreasing analysis time. FahamecV1 includes an optic microscope, a motorized microscope stage, an electronic control unit, a camera, a computer and a software application. Printing components of the motorized microscope stage (using a 3D printer) is of the main reasons for cost reduction. Operations such as stepper motor calibration, are detection, focusing, scanning, metaphase detection and saving of coordinates into a database are automatically performed. To detect metaphases, a filter named Metafilter is developed and applied. Average scanning time per preparate is 77 sec/cm2. True positive rate is calculated as 95.1%, true negative rate is calculated as 99.0% and accuracy is calculated as 98.8%.

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Campbell, Robert A. A., Robert W. Eifert und Glenn C. Turner. „Openstage: A Low-Cost Motorized Microscope Stage with Sub-Micron Positioning Accuracy“. PLoS ONE 9, Nr. 2 (26.02.2014): e88977. http://dx.doi.org/10.1371/journal.pone.0088977.

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Nonaka, M. E., M. B. Agüero, A. A. Hnilo und M. G. Kovalsky. „DEVELOPMENT IN MATLAB AND LABVIEW FOR THE CONTROL AND AUTOMATIZATION OF EXPERIMENTS IN QUANTUM OPTICS“. AnalesAFA Vol.31 N.2 31, Nr. 2 (2020): 62–66. http://dx.doi.org/10.31527/analesafa.2020.31.2.62.

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In this paper, it is described the development in the LabVIEW plataform together with the programming context ofMATLAB for the control and automation of quantum optics experiments. The developed program allows the communication of the different involved devices: SPCM (Single Photon Counters Modules) photon detectors; TDC (time todigital converter) converter ID900 from ID Quantique with 10 ps of resolution and the motorized rotators PRM1Z8(Motorized Rotation Stage from Thorlabs). The implemented system, allows to work optimally during the laboratory experiments that must be performed under darkness condition, this avoids manipulation errors during the measurement process.

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Zheng, Nan, Zhiyong Yi, Zhenzhen Li, Ran Chen, Yuqing Lai und Yongfeng Men. „Achieving grazing-incidence ultra-small-angle X-ray scattering in a laboratory setup“. Journal of Applied Crystallography 48, Nr. 2 (12.03.2015): 608–12. http://dx.doi.org/10.1107/s1600576715001752.

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A grazing-incidence sample stage was designed for realizing grazing-incidence scattering measurements, especially in the ultra-small-angle regime, in a modified Xenocs Xeuss system in the laboratory. The designed sample stage, which is composed of four separate motorized positioning stages, allows the sample to be moved along four different directions to locate it in the proper position for scattering measurement. In an effort to realize grazing-incidence ultra-small-angle scattering (GIUSAXS) measurements, both the separation of the collimation slit systems and the sample-to-detector distance have been lengthened. At a separation of the collimation slit systems of 2400 mm and a sample-to-detector distance of 6558 mm, the effective smallest scattering vector magnitudeqminreaches 0.01 nm−1. A colloidal crystalline thin film obtained from drying a polystyrene latex dispersion on silicon substrate was measured in the setup in GIUSAXS mode at different beam sizes. The resultant GIUSAXS patterns at smaller beam sizes reveal fine crystalline structures in the film.

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Azevedo, Fábio de, Juliana Déo Dias, Louizi de Souza Magalhães Braghin und Cláudia Costa Bonecker. „Length-weight regressions of the microcrustacean species from a tropical floodplain“. Acta Limnologica Brasiliensia 24, Nr. 1 (16.08.2012): 01–11. http://dx.doi.org/10.1590/s2179-975x2012005000021.

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AIM: This study presents length-weight regressions adjusted for the most representative microcrustacean species and young stages of copepods from tropical lakes, together with a comparison of these results with estimates from the literature for tropical and temperate regions; METHODS: Samples were taken from six isolated lakes, in summer and winter, using a motorized pump and plankton net. The dry weight of each size class (for cladocerans) or developmental stage (for copepods) was measured using an electronic microbalance; RESULTS: Adjusted regressions were significant. We observed a trend of under-estimating the weights of smaller species and overestimating those of larger species, when using regressions obtained from temperate regions; CONCLUSION: We must be cautious about using pooled regressions from the literature, preferring models of similar species, or weighing the organisms and building new models.

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Huang, Wenjing, Sheng Zhang, Belal Ahmad und Tomohiro Kawahara. „Three-Motorized-Stage Cyclic Stretching System for Cell Monitoring Based on Chamber Local Displacement Waveforms“. Applied Sciences 9, Nr. 8 (15.04.2019): 1560. http://dx.doi.org/10.3390/app9081560.

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Researchers have developed a cell stretching device to mimic the in vivo mechanical environment in vitro in order to investigate cell mechanotransduction. Cyclic stretch is involved in lengthening and relaxation phases. Cells may respond to mechanical stimulation rapidly within a few seconds, and sudden disruption of cell cytoskeletons may also occur at any point in any phase of cyclic stretch. However, until now, no research has been done to establish a method of collecting cell images at the two phases of cyclic stretch. Because image processing is time-consuming, it is difficult to adjust focus and collect high-resolution images simultaneously at the two phases during the process. In this study, a three-motorized-stage system was developed to meet the requirements. The results demonstrated that linear compensation is effective for cell imaging, and it is applicable to have a feed-forward control method without image processing. A method was then developed to determine the maximum displacement of the target in the horizontal and vertical directions, and the linear compensation waveforms were designed using the C program automatically and immediately before stretching. Further, the cyclic stretch was applied to cells using the three motorized stages, and clear phase-contrast cell imaging (30 fps) were obtained almost at any point in time. Detailed cell changes such as sudden disruption of cell–cell junctions, not only long-term cell response, were observed. Therefore, our study established a methodology to greatly improve the time resolution of imaging of cyclic stretch for the research of detailed cellular mechanotransduction.

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Moore, J., E. Velarde und J. Wong. „SU-E-T-373: A Motorized Stage for Fast and Accurate QA of Machine Isocenter“. Medical Physics 41, Nr. 6Part17 (29.05.2014): 310. http://dx.doi.org/10.1118/1.4888706.

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Lei, Chun Li, Zhi Yuan Rui, Jun Liu und Jing Fang Fang. „Comparison of Forecasting Methods for Thermal Error on High-Speed Motorized Spindle“. Advanced Materials Research 291-294 (Juli 2011): 2991–94. http://dx.doi.org/10.4028/www.scientific.net/amr.291-294.2991.

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In order to reduce the thermal error of the motorized spindle and improve the manufacturing accuracy of NC machine tool, the thermal error forecasting models based on multivariate autoregressive (MVAR) method and genetic radial basis function (GARBF) neural network method are proposed, respectively. According to different representations of generation mechanism of motorized spindle thermal deformation, operation efficiency and curve fit precision of these two models are compared. The studied results show that under the same temperature rise variable conditions, MVAR model and GARBF neural network model have almost the same convergence and operation time and relative errors of two models are less than 3%. The results also show that the MVAR model has higher forecast precision in the prediction former stages; in contrast, the GARBF neural network model has higher forecast precision in the latter stages.

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Dai, Ye, Wan-Jian Wen, Li-Yu Xuan, Xiao-Yang Yu und Gang Wang. „Recent Patents for the Motorized Spindle Preload Mechanism“. Recent Patents on Mechanical Engineering 14, Nr. 3 (09.08.2021): 329–41. http://dx.doi.org/10.2174/2212797613666210106091856.

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Background: The motorized spindle preload technology is one of the motorized spindle key technologies, and adjusting the preload according to the working conditions can effectively improve the dynamic performance of the motorized spindle and enhance the machining accuracy. Objectives: Review the preload mechanism development, introduce various preload mechanisms, and show research status in recent years. Then to explore and predict the future development of preload technology through the analysis of the overall preload mechanism. Methods: Search for different kinds of patents and literature about spindle preload structure in recent years. Through structural research and comparison with the traditional preload mechanism, to review the structure principle of various preload mechanisms at the present stage, then shown the advantages and disadvantages of each structure. Result: According to the patents and research of the preload mechanism in recent years, classification introduced the piezoelectric ceramic preload device, electromagnetic preload device, and hydraulic preload device, and so on. Introduce their advantages and existing problems in detail, then comprehensively compare the advantages and disadvantages of various mechanisms in control and mechanism. Finally, discuss the prospects and development directions of preload technology. Conclusion: With the further development of technology, high-precision products have higher requirements for machine tools, such as low latency, low heat generation, high efficiency, and long life. People use electromagnetic force, air pressure, hydraulic pressure, and other methods, to control the magnitude of the preload, maintain the performance of the motorized spindle at a high level. Compared with the traditional quantitative preload, their applicable working conditions are more extensive and accuracy is higher. However, various new preload methods still have certain shortcomings and need further improvement.

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Mamrashev, Alexander, Fedor Minakov, Lev Maximov, Nazar Nikolaev und Pavel Chapovsky. „Correction of Optical Delay Line Errors in Terahertz Time-Domain Spectroscopy“. Electronics 8, Nr. 12 (26.11.2019): 1408. http://dx.doi.org/10.3390/electronics8121408.

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One of the key elements of terahertz time-domain spectrometers is the optical delay line. Usually it consists of a motorized translation stage and a corner reflector mounted on its top. Errors in the positioning of the translation stage lead to various distortions of the measured waveform of terahertz pulses and, therefore, terahertz spectra. In this paper, the accuracy of position measurements is improved by using an optical encoder. Three types of systematic errors are found: Increasing and periodic offsets of the translation stage position, as well as a drift of its initial position in a series of consecutive measurements. The influence of the detected errors on the measured terahertz spectra is studied and correction methods are proposed.

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Türker, Volkan, Mahmut Emre Yağcı, Sarper Haydar Salman, Kamil Çınar, Semih Koray Eken und Alpan Bek. „A Dual-Wavelength Pulsed Laser Processing Platform for a-Si Thin Film Crystallization“. Instruments 3, Nr. 2 (05.06.2019): 31. http://dx.doi.org/10.3390/instruments3020031.

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Interest in laser crystallization (LC) of silicon (Si) thin films has been on the rise in fabrication of polycrystalline silicon (pc-Si) based thin/ultrathin photovoltaic solar cells and Si based thin film transistors (TFT). Laser based fabrication of device quality pc-Si thin films at room temperature is expected to be a key enabling technology because of its low energy, material and process time budget. Fabrication of high-quality pc-Si thin films without pre-/post-treatment at large is a disruptive technology which has the potential to revolutionize the Si thin film industry. We hereby describe in detail a multi-wavelength laser processing platform specially developed for crystallization of amorphous silicon (a-Si) thin films into pc-Si thin films. The platform has three main stages. The first stage consists of a nanosecond pulsed ytterbium (Yt3+) doped fibre-laser with a master oscillator power amplifier architecture, operating at a wavelength of 1064 nm with an adjustable repetition rate between 80 kHz–300 kHz. The output beam has a maximum power of 18 W with a pulse energy of 90 µJ. The pulse durations can be set to values between 15 ns–40 ns. The second stage has free-space optical elements for second harmonic generation (SHG) which produces an emission at a wavelength of 532 nm. Conversion efficiency of the SHG is 25% with an output pulse energy of 20 µJ. The platform provides two wavelengths at either 1064 nm or 532 nm in crystallization of a-Si films for different crystallization regimes. The last stage of the platform has a sample processing assembly with a line-focus, which has an x-y motorized stage on a vibration isolated table. Speed of the motorized stage can be set between 1 mm/s–100 mm/s. Stage speed and repetition rate adjustments help to adjust overlap of successive pulses between 97.22–99.99%. Our platform has variety of tune parameters that make it a uniquely flexible system for delicate Si thin film crystallization. A large selection of operational parameter combinations, the wavelength selection and simultaneous x-y scanning capability allow users to crystallize Si films on various substrates optimally. The operation wavelength choice can be done by considering optical absorption and thickness of a-Si films on different types of substrates. Hence, delivering precise amount of absorbed energy in the line-focus irradiation is useful in increasing the average size of crystalline domains; moreover, nucleation of crystallites can be initiated either from the top or bottom interface of the film. Continuous and simultaneous motion of the stage in two dimensions allows to process arbitrary continuous pc-Si geometries in a-Si film. In summary, our multi-wavelength laser processing platform offers all-in-one LC utility for intricate LC-Si processing.

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Mackenzie, J. M., und R. W. Bergensten. „A five-axis computer-controlled stage for the Transmission Electron Microscope“. Proceedings, annual meeting, Electron Microscopy Society of America 47 (06.08.1989): 50–51. http://dx.doi.org/10.1017/s0424820100152227.

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A new five axis computer controlled stage system for the transmission electron microscope has been developed. The current design uses the existing stage of a Philips 400T without internal modification. The motors are all synchronous and employ feedback control from shaft encoders rather than “steps”.The X and Y translation controls have an increment of 15 nm and are engaged by electronic clutches. The alpha tilt control can be incremented in 0.0625 degree units which allows 16 “steps” per degree. The beta tilt has an increment of 0.0017 degrees (approximately 500 counts per degree). The Z axis control has a 3 nm increment and can be controlled by a set of manual override switches. The position of the stage is monitored by shaft encoders in such a way that manual positioning does not effect motorized repositioning.All five axes are calibrated for speed to determine the log/linear range of movement (Figs. 1-4). From the graphs, three speeds are chosen.

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Kim, Se Ik, Chel Hun Choi, Kidong Kim, Deok Ho Hong, Jeong-Yeol Park, Byung Su Kwon, Keun Ho Lee et al. „Effect of postoperative adjuvant treatment in the therapeutic management of stage I, morcellated uterine leiomyosarcoma: A Korean multicenter study.“ Journal of Clinical Oncology 37, Nr. 15_suppl (20.05.2019): e17106-e17106. http://dx.doi.org/10.1200/jco.2019.37.15_suppl.e17106.

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e17106 Background: To evaluate the effectiveness of postoperative adjuvant treatment for morcellated, uterus-limited leiomyosarcoma in a multicenter setting. Methods: We included primary FIGO stage I uterine leiomyosarcoma patients treated between 2003 and 2016. All received one of the following morcellation methods: (1) intracorporeal morcellation using motorized device; (2) intracorporeal morcellation using surgical knife or electrocautery; and (3) vaginal morcellation. Patients’ survival outcomes were compared according to the implementation of postoperative adjuvant treatment. Results: In total, 55 patients were enrolled from 13 institutions, and 24 and 31 patients were assigned to surgery alone group and adjuvant treatment group, respectively. Characteristics including age, mass size, morcellation methods, and extent of surgery were similar between the two groups. On pathologic examination, there were no differences in degree of nuclear pleomorphism, necrosis, and lymphovascular space invasion. In adjuvant treatment group, 67.7%, 19.4%, and 12.9% received chemotherapy, concurrent chemoradiation therapy, and radiation, respectively. While the two groups showed similar overall survival ( P= 0.959) after a median follow up of 50.5 months, adjuvant treatment group showed a trend towards worse progression-free survival (PFS; 3-year survival rate, 78.2% vs. 46.1%; P= 0.060). However, in multivariate analyses, adjuvant treatment did not influence PFS (adjusted HR, 3.478; 95% CI, 0.659–18.367; P= 0.142). Confined to 17 cases where motorized morcellation device was used, surgery only and adjuvant treatment groups also showed similar PFS (3-year survival rate, 57.1% vs. 44.4%; P= 0.874). Conclusions: In FIGO stage I, morcellated uterine leiomyosarcoma, post-operative adjuvant treatment did not improve patients’ survival outcomes. Further prospective cohort studies are warranted.

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de Jong, Marc J. C., P. Emile S. J. Asselbergs und Max T. Otten. „The new CM-Series TEMs: integration of a five-axis motorized, fully computer-controlled goniometer“. Proceedings, annual meeting, Electron Microscopy Society of America 51 (01.08.1993): 258–59. http://dx.doi.org/10.1017/s0424820100147132.

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A new step forward in Transmission Electron Microscopy has been made with the introduction of the CompuStage on the CM-series TEMs: CM120, CM200, CM200 FEG and CM300. This new goniometer has motorization on five axes (X, Y, Z, α, β), all under full computer control by a dedicated microprocessor that is in communication with the main CM processor. Positions on all five axes are read out directly - not via a system counting motor revolutions - thereby providing a high degree of accuracy. The CompuStage enters the octagonal block around the specimen through a single port, allowing the specimen stage to float freely in the vacuum between the objective-lens pole pieces, thereby improving vibration stability and freeing up one access port. Improvements in the mechanical design ensure higher stability with regard to vibration and drift. During stage movement the holder O-ring no longer slides, providing higher drift stability and positioning accuracy as well as better vacuum.

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Zheng, Yu, und Ji-an Duan. „A geometric and kinematic error model and compensation of a 6-axis motorized optical fiber alignment stage“. Advances in Mechanical Engineering 7, Nr. 6 (02.06.2015): 168781401558950. http://dx.doi.org/10.1177/1687814015589503.

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Rebetez, M., D. Petit, R. Nicot, M. Grivet, N. Ben Ghouma und A. Chambaudet. „Version 3.0 “atom” software with built-in motorized stage control for optical microscopy analysis of nuclear tracks“. Nuclear Tracks and Radiation Measurements 22, Nr. 1-4 (Januar 1993): 225–28. http://dx.doi.org/10.1016/0969-8078(93)90054-8.

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MELVIN, NEAL R., DANIEL PODA und ROBERT J. SUTHERLAND. „A simple and efficient alternative to implementing systematic random sampling in stereological designs without a motorized microscope stage“. Journal of Microscopy 228, Nr. 1 (Oktober 2007): 103–6. http://dx.doi.org/10.1111/j.1365-2818.2007.01828.x.

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Lin, C.-W. „An application of Taguchi method on the high-speed motorized spindle system design“. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 225, Nr. 9 (28.06.2011): 2198–205. http://dx.doi.org/10.1177/0954406211405279.

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As spindle speeds increase, the variations caused by high-speed effects become more significant. Therefore, in the initial design stage, it is necessary for machine tool design engineers to construct a robust high-speed machine tool that possesses high first-mode natural frequencies (FMNFs) and is insensitive to high operating speeds. In this article, Taguchi method is used to identify the optimal values of design variables (DVs) for a robust high-speed spindle system with respect to the signal-to-noise ratio (SNR) of system FMNF. The L18 orthogonal array covers seven main DVs at three levels each, one main DV at two levels, and the noise factor spindle speeds at six levels. The results show that the new optimal design has improved the SNR of the FMNF by 2.06 dB from the original design; this implies that the quality loss has been reduced to 62 per cent of its original value. The optimal design has been verified by a confirmation numerical experiment.

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Zeineh, Jack A. „Integrated Live and Stored Internet Based Digital Microscopy for Education“. Microscopy and Microanalysis 6, S2 (August 2000): 1168–69. http://dx.doi.org/10.1017/s1431927600038332.

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Few educational institutions have well maintained microscopes that facilitate the experience intended by the creators of their teaching texts. The cost of putting a high quality selection of the different types of microscopes at every educational institution for access by all students is prohibitive. The advent of the Internet and the rapid proliferation of computers at educational institutions offer the prospect for dramatic improvements in microscopy education.We present an Internet based digital microscopy system with unique features for education. We have developed a unified architecture for management and transmission of live and stored microscope data over the Internet. The system consists of a combination of software and hardware. The hardware includes a microscope with a motorized stage, focus, and optionally a motorized nosepiece. Standard off the shelf components for each of the items can be used so that the user is afforded great flexibility in utilizing available hardware. Image acquisition is done by attaching a video camera to the microscope. Both analog and digital video cameras are supported, although it should be noted that users have experienced outstanding results with relatively inexpensive analog cameras.

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Anwariyah, Komariyuli. „Deteksi Objek Nomor Kendaraan Pada Citra Kendaraan Bermotor“. JTIM : Jurnal Teknologi Informasi dan Multimedia 1, Nr. 4 (18.02.2020): 311–17. http://dx.doi.org/10.35746/jtim.v1i4.65.

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Motor vehicle police numbers recognation is one of the most important topics in the processof building a smart transportation system. Also this concept and introduction system will bevery useful in various combinations of applications, including in monitoring vehicles when acrime occurs. In this research an object recognition model will be developed by reviewing thesize of the object vertically. Image processing stages starting from the stages of image sizechange, image grayscale, edge detection, morphological operations to the segmentation stage.Based on tests conducted, it was found that the implemented model can be used in the processof recognizing vehicle numbers in the image of motorized vehicles

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Liu, Chun Jie, und Bing Shou Zhu. „Development of a Measuring System for Stiffness Evaluation of Micro Torsion Bar“. Applied Mechanics and Materials 33 (Oktober 2010): 190–94. http://dx.doi.org/10.4028/www.scientific.net/amm.33.190.

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For the micro torsion bar used in inertial navigation, the torsional stiffness should be evaluated precisely. A computer-controlled instrument for stiffness measurement based on static measuring principle was introduced for variant section micro bars, The main hardware of the system includes a precision motorized rotary stage and a torsion sensor. The stepping resolution of angular displacement is 0.00250, the measurement accuracy of moment is 0.05mN•m. The measurement software was programmed on the LabVIEW platform for virtual instrument. The measuring experiments indicate the device can be used for automatic testing of stiffness of the torsion bars with high accuracy and efficiency.

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Yao, Peng, Gang Liu und Yan Liu. „Synchronization Control Scheme for Antenna Pointing Control System Based on Hybrid Linear Actuator“. Applied Mechanics and Materials 599-601 (August 2014): 1077–80. http://dx.doi.org/10.4028/www.scientific.net/amm.599-601.1077.

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To overcome the limitations of the independent stacked hybrid actuator with multiple sensors, a new hybrid linear actuator combines the advantages of both technologies: piezo actuator for extremely high accuracy and motorized stage for long travel ranges. A hybrid linear actuator prototype has been developed for testing in our satellite tracking antenna pointing control system. For the maximum absolute positioning accuracy, host positioning controller depends only on one common position sensor for both the coarse and fine positioning at the same time. Synchronization control scheme shows promising results for extremely small steps, high repeatability and good linearity over long travel ranges.

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bin Din, Abdul Talib, V. K. Kher und Chee Fai Tan. „Conceptual Design of Mini Cost-Saving Water Treatment Plant for River Inlets“. Applied Mechanics and Materials 521 (Februar 2014): 762–74. http://dx.doi.org/10.4028/www.scientific.net/amm.521.762.

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This product is specially designed to solve the current typical river pollution by tackling the pollution at the river inlets' stage. It is equipped with all conventional water treatment technologies with innovative energy cost-saving technique using gravity and buoyancy forces. The product is functional in term of saving the environment, particularly river and its flora and fauna and in saving the energy that normally used in operating the motorized processing equipment as normally used in current product in the market. The free and readily available gravity and buoyancy forces of water are manipulated efficiently to save the energy cost.

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Schneidereit, Dominik, Larissa Kraus, Jochen C. Meier, Oliver Friedrich und Daniel F. Gilbert. „Step-by-step guide to building an inexpensive 3D printed motorized positioning stage for automated high-content screening microscopy“. Biosensors and Bioelectronics 92 (Juni 2017): 472–81. http://dx.doi.org/10.1016/j.bios.2016.10.078.

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Yamada, Yohei, Naotoshi Yamaguchi, Masakazu Ozaki, Yukihiro Shinozaki, Mikako Saito und Hideaki Matsuoka. „An Instant Cell Recognition System Using a Microfabricated Coordinate Standard Chip Useful for Combinable Cell Observation with Multiple Microscopic Apparatuses“. Microscopy and Microanalysis 14, Nr. 3 (03.03.2008): 236–42. http://dx.doi.org/10.1017/s1431927608080252.

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AbstractDisposable coordinate standard (CS) chips were fabricated by the ejection of melted polystyrene into a metal mold. The CS chip surface was divided into four parts different in height and width. The edge lines of these parts could be recognized as straight lines 2 μm in width in the microscope view and used as the X and Y axes for the culture dish. The CS chip was attached on the bottom of a culture dish outside. Then the dish was set on the microscope stage and moved by means of a motorized automatic stage. The X-Y coordinates of many single-cells in a culture dish were registered, respectively. Once registered, any single-cell could instantly be brought to the center of the microscope view even after displacing the dish from the stage for a while and setting it again on the stage. Therefore, experimenters can easily search any single-cell in any culture dish on any microscope at any time. Such a system is remarkably useful for various modes of single-cell experiment and named “Suguwaculture,” which means “instantly” (“sugu” in Japanese) + “recognizable” (“wakaru” in Japanese) + “culture” (during culture).

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Fan, Shengli, Mei Yu, Gangyi Jiang, Yigang Wang, Hao Jiang und Qingbo Zhang. „A Mismatch Detection Method Based on Affine Transformation for Stereo Light Microscopy Stereo Matching“. International Journal of Pattern Recognition and Artificial Intelligence 31, Nr. 05 (27.02.2017): 1750013. http://dx.doi.org/10.1142/s0218001417500136.

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For the light microscopy images that have the characteristics of shallow depth of field, serious distortion and poor resolution, mismatch is a ubiquitous phenomenon. The paper presents a mismatch detection method for the stereo light microscopy stereo matching. Affine transformation matrix and matching constraint condition are calibrated by the calibration board which has the precision solid dots and the motorized stage. Bias vector of affine transformation of each matching pair is taken as the criteria to apply mismatch detection. The experimental results show that the method can detect more mismatching pairs and preserve more matching pairs than the traditional RANSAC method and the epipolar rectification method.

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Sharma, Amit, Peter Berntsen, Rajiv Harimoorthy, Roberto Appio, Jennie Sjöhamn, Michael Järvå, Alexander Björling et al. „A simple adaptation to a protein crystallography station to facilitate difference X-ray scattering studies“. Journal of Applied Crystallography 52, Nr. 2 (28.03.2019): 378–86. http://dx.doi.org/10.1107/s1600576719001900.

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The X-ray crystallography station I911-2 at MAXLab II (Lund, Sweden) has been adapted to enable difference small- and wide-angle X-ray scattering (SAXS/WAXS) data to be recorded. Modifications to the beamline included a customized flow cell, a motorized flow cell holder, a helium cone, a beam stop, a sample stage and a sample delivery system. This setup incorporated external devices such as infrared lasers, LEDs and reaction mixers to induce conformational changes in macromolecules. This platform was evaluated through proof-of-principle experiments capturing light-induced conformational changes in phytochromes. A difference WAXS signature of conformational changes in a plant aquaporin was also demonstrated using caged calcium.

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Hogg, James S., James G. Hopker und Alexis R. Mauger. „The Self-Paced VO2max Test to Assess Maximal Oxygen Uptake in Highly Trained Runners“. International Journal of Sports Physiology and Performance 10, Nr. 2 (März 2015): 172–77. http://dx.doi.org/10.1123/ijspp.2014-0041.

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Purpose:The novel self-paced maximal-oxygen-uptake (VO2max) test (SPV) may be a more suitable alternative to traditional maximal tests for elite athletes due to the ability to self-regulate pace. This study aimed to examine whether the SPV can be administered on a motorized treadmill.Methods:Fourteen highly trained male distance runners performed a standard graded exercise test (GXT), an incline-based SPV (SPVincline), and a speed-based SPV (SPVspeed). The GXT included a plateau-verification stage. Both SPV protocols included 5 × 2-min stages (and a plateau-verification stage) and allowed for self-pacing based on fixed increments of rating of perceived exertion: 11, 13, 15, 17, and 20. The participants varied their speed and incline on the treadmill by moving between different marked zones in which the tester would then adjust the intensity.Results:There was no significant difference (P = .319, ES = 0.21) in the VO2max achieved in the SPVspeed (67.6 ± 3.6 mL · kg−1 · min−1, 95%CI = 65.6–69.7 mL · kg−1 · min−1) compared with that achieved in the GXT (68.6 ± 6.0 mL · kg−1 · min−1, 95%CI = 65.1–72.1 mL · kg−1 · min−1). Participants achieved a significantly higher VO2max in the SPVincline (70.6 ± 4.3 mL · kg−1 · min−1, 95%CI = 68.1–73.0 mL · kg−1 · min−1) than in either the GXT (P = .027, ES = 0.39) or SPVspeed (P = .001, ES = 0.76).Conclusions:The SPVspeed protocol produces VO2max values similar to those obtained in the GXT and may represent a more appropriate and athlete-friendly test that is more oriented toward the variable speed found in competitive sport.

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Rosenfeld, Michael E. „Low-cost digital-image processing and analysis system for on-line morphometric measurements of sem images“. Proceedings, annual meeting, Electron Microscopy Society of America 46 (1988): 432–33. http://dx.doi.org/10.1017/s0424820100104224.

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The widespread use of digital image processing systems for high resolution morphometric applications has been limited by the cost and difficulty of interfacing systems to electron microscopes. The recent development of image acquisition boards and software for PC-AT based systems and the availability of scanning electron microscopes that are capable of scanning at true TV rates (RS-170 compatible signals), have alleviated these problems. We have assembled a system consisting of a Compaq Portable 286 (Compaq Computer Corp. Houston, TX) equipped with an FG-100 image acquisition board (Imaging Technology Inc. Woburn, MA), interfaced with a Philips 515 SEM containing a motorized stage and Edax stage controller (Philips Electronics Inc. Mahwah, NJ).Utilizing commercially available software, this system has extensive image processing and morphometric analysis capabilities. For example, because TV scan rates generate images with low signal to noise ratios, improvement of the image quality is possible via real time image averaging and background subtraction using the the FG-100 board Feedback/Input lookup table.

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Faulkner, James, Alexis R. Mauger, Brandon Woolley und Danielle Lambrick. „The Efficacy of a Self-Paced VO2max Test During Motorized Treadmill Exercise“. International Journal of Sports Physiology and Performance 10, Nr. 1 (Januar 2015): 99–105. http://dx.doi.org/10.1123/ijspp.2014-0052.

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Purpose:To assess the utility of a self-paced maximal oxygen uptake (VO2max) test (SPV) in eliciting an accurate measure of VO2max in comparison with a traditional graded exercise test (GXT) during motorized treadmill exercise.Design:This was a cross-sectional experimental study whereby recreationally trained men (n = 13, 25.5 ± 4.6 y) completed 2 maximal exercise tests (SPV, GXT) separated by a 72-h recovery period.Methods:The GXT was continuous and incremental, with prescribed 1-km/h increases every 2 min until the attainment of VO2max. The SPV consisted of 5 × 2-min stages of incremental exercise, which were self-selected and adjusted according to 5 prescribed RPE levels (RPE 11, 13, 15, 17, and 20).Results:Although no significant differences in VO2max were observed between the SPV and GXT (63.9 ± 3.3 cf 60.9 ± 4.6 mL · kg−1 · min−1, respectively, P > .05), the apparent 4.7% mean difference may be practically important. The 95% limits-of-agreement analysis was 3.03 ± 11.49 mL · kg−1 · min−1. Therefore, in the worst-case scenario, the GXT may underestimate measured VO2max as ascertained by the SPV by up to 19%. Conversely, the SPV could underestimate the GXT by 14%.Conclusions:The current study has shown that the SPV is an accurate measure of VO2max during exercise on a motorized treadmill and may provide a slightly higher VO2max value than that obtained from a traditional GXT. The higher VO2max during the SPV may be important when prescribing training or monitoring athlete progression.

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Komaladini, Santi, und Popon Popon. „PENGARUH PENERAPAN METODE INTERVENSI SEMANTIK DIVERGEN TERHADAP AFASIA TRANSKORTIKAL MOTORIS“. Jurnal Teras Kesehatan 3, Nr. 2 (30.01.2021): 84–93. http://dx.doi.org/10.38215/jutek.v3i2.54.

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This study aims to determine the application of the divergent semantic intervention method in motor transcortical aphasia clients after stroke, male gender aged 44 years at the Cibabat Regional General Hospital. The research method used is a case study research experiment which aims to determine the condition of the subject before and after intervention through therapy. Data collection was carried out through the WOTS stage, namely (1) interviews with the client's parents, (2) direct observation of the client, (3) conducting tests on the client, and (4) studying the patient's medical record document. The results of the research after doing therapy using the divergent semantic intervention method for 15 meetings obtained good results by assessing the level of words on nouns. The conclusion is that the divergent semantic intervention method has an effect on mentioning the level of objects

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Khalida, Rakhmi, und Siti Setiawati. „Analisis Sentimen Sistem E-Tilang Menggunakan Algoritma Naive Bayes Dengan Optimalisasi Information Gain“. Journal of Informatic and Information Security 1, Nr. 1 (29.05.2020): 19–26. http://dx.doi.org/10.31599/jiforty.v1i1.137.

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Abstract The Government of Indonesia took steps to change the system to improve public services in traffic violations by implementing the e-ticketing system. This system is a solution for disciplining motorized motorists from committing traffic violations. The existence of e-ticketing is also a solution to prevent the delinquency of law enforcers from illegal levies, peace terms in place, to accountability of fines. In this study, sentiment analysis of the e-ticketing system or opinion mining to classify the variety of public comments that give a positive, negative or neutral impression. Twitter social media is one of the objects to express opinions because it is user friendly, updated topics, and openly accesses tweets. Opinions on Twitter are collected, then the preprocessing stage is performed, then the selection of information gain features helps reduce noise caused by irrelevant labels, the next step is the classification of sentiments with the Naïve Bayes algorithm and finally polarity sentiments. This research resulted in an accuracy of 41.82%, a precision of 50.51% and a recall of 45.45%. Keywords: Sentiment analysis, E-ticketing, Information Gain, Naive Bayes Abstrak Pemerintah Indonesia melakukan langkah perubahan untuk memperbaiki sistem pelayanan publik dalam pelanggaran berlalu-lintas yaitu dengan menerapkan sistem e-Tilang. Sistem ini menjadi solusi mendisiplinkan para pengendara kendaraan bermotor dari banyaknya melakukan pelanggaran berlalu-lintas. Keberadaan e-Tilang juga menjadi solusi mencegah kenakalan penegak hukum dari pungutan liar, istilah damai ditempat, hingga akuntabilitas uang denda. Dalam penelitian ini melakukan analisis sentimen tentang sistem e-Tilang atau opinion mining untuk mengelompokan ragam komentar masyarakat yang memberikan kesan positif, negatif atau netral. Media sosial Twitter menjadi salah satu objek untuk menyampaikan opini karena user friendly, topik ter-update, dan terbuka mengakses tweet. Opini pada twitter dikumpulkan, lalu dilakukan tahapan preprocessing, selanjutnya dengan seleksi fitur information gain membantu mengurangi noise yang disebabkan oleh label-label yang tidak relevan, tahap selanjutnya adalah klasifikasi sentimen dengan algoritma Naïve Bayes dan terakhir sentimen polarity. Penelitian ini menghasilkan accuracy 41,82%, presisi 50,51% dan recall 45,45%. Kata kunci: Analisis sentimen, E-Tilang, Information Gain, Naive Bayes

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Hsu, Cheng Chih, Ju Yi Lee, C. C. Wu und H. C. Shih. „3D Displacement Measurement with Pico-Meter Resolution Using Single Heterodyne Grating Interferometry“. Key Engineering Materials 381-382 (Juni 2008): 283–86. http://dx.doi.org/10.4028/www.scientific.net/kem.381-382.283.

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The precision positioning device becomes significant requirement in scientific instruments used for the applications of nanotechnology for a few decades. To achieve the high resolution positioning, the sensing methods of displacement sensor become more important in positioning device. In this paper, a novel method is presented for measuring both in-plane/out-plane displacements with the single heterodyne grating interferometry (HGI). We demonstrated the 1D, 2D, and 3D measurement results respectively and the smallest displacement can be detected was better than 6 pm. Furthermore, the nanometer resolution can be ensured within 20 µm displacement. Hence, the in-plane/out-plane measurements with single apparatus can be realized by our method and might be a displacement sensor using in the motorized stage with suitable opto-mechanics structure minimization.

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Decrette, Mathieu, Jean-François Osselin und Jean-Yves Drean. „Motorized Jacquard technology for multilayer weaving damages study and reduction: Shed profile and close shed profile“. Journal of Engineered Fibers and Fabrics 14 (Januar 2019): 155892501983302. http://dx.doi.org/10.1177/1558925019833025.

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Materials used for composite reinforcements usually have high mechanical performances which are linked to a very sensitive and brittle behaviour to friction. The weaving process applied to delicate yarns, like glass, carbon and some other technical yarns, generate damages which tend to reduce the performances of the final composite. Shedding may be a major weaving stage for the generation of yarn damages. Based on a specific weaving pattern, it was observed that different shedding configurations could influence yarn damages at the shedding step. The specificity of the motorized Jacquard device is used to generate different movements and geometry configurations. A particular methodology needed to be set in order to confirm these observations and bring out a clear effect of shedding parameters on yarn damages. After damages have been identified and classified, some experiments will count the damage occurrences and evolutions in time according to shedding parameters. The aim of this research is first to show a clear effect of shedding on warp damaging thanks to the quantification of damages and then to set out an optimized configuration of shedding parameters which may reduce deterioration involved in high-density multilayer woven fabrics.

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Al-Atawi, Attiyah M., Ravindra Kumar und Wafaa Saleh. „TRANSPORTATION SUSTAINABILITY INDEX FOR TABUK CITY IN SAUDI ARABIA: AN ANALYTIC HIERARCHY PROCESS“. TRANSPORT 31, Nr. 1 (13.07.2015): 47–55. http://dx.doi.org/10.3846/16484142.2015.1058857.

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A sustainable transport strategies for Tabuk City in the Saudi Arabia has been developed using the Analytical Hierarchy Process (AHP) using travel data collected from Tabuk City. A number of transport policies and strategies have been tested for inclusion in the developed system. The top five strategies which were ranked highest amongst these by the respondents are policies that are targeting: clean environment, altering travel behaviour, shifting to more sustainable modes of transport, charging motorists for entering the city centre and charging motorists to enter the city if the revenue raised was spent on tackling environmental pollution caused by transport. The population have been classified according to gender, age, income and family structure groups. The strategy of promoting clean environment policies were high priority while for example, charging motorists to enter the city if the revenue raised was spent on tackling environmental pollution policies were not popular for any group. Priority ranking of transport sustainability at pre- and post-implementation stages of the transportation measure are important to provide recommendations for implementation. The strength of this approach is mainly in its ability to perform decision making under limited, heterogeneous data coming from multiple stakeholders which is presented in terms of different types of user group in our case study. This research can be further enhanced by testing further population groups and increasing the sample size.

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