Pengukuran Literasi Digital Mahasiswa Pendidikan Teknik Arsitektur sebagai Digital Native pada Era Revolusi Industri 4.0

The head of research is “The Digital Literacy Measurement of Architecture Engineering Education Students as Digital Native at The Era of Industrial Revolution 4.0. This study aim at measure the digital literacy of Architectural Engineering Education students in the Faculty of Technology and Vocational Education in the process of transition to a new normal at Industrial Revolution 4.0 era that will disrupt entire sectors into digital format. The method that the researcher used in this study is descriptive research with quantitative approach and the questionnaire with psychological approach is the data accumulation technique that the research used to collect the data. The questionnaire distributed to Architectural Engineering Education students online. And also, for the sampling technique is purposive sampling by taking into account special features. The measurements of digital literacy observed in 3 dimension of Architectural Engineering Education students’ digital literacy that is technical dimension, cognitive dimension and social-emotional dimension. The graphic diagram pre dimension informed the research’s result

Practical performances of high-speed measurement of gear Transmission Error or torsional vibrations with optical encoders

International audienceWe evaluated in this paper an improved technique to measure Gear Transmission Error (GTE) at high speed, by using low pulse per revolution optical encoders. The originality of this technique lies on the fact that highly precise, completely digital measurements of torsional vibration or Transmission Error (TE) at high speed are achievable by the use of low price, basic optical components. The length of encoder pulses are estimated with a high frequency timer (100 MHz) : thus, it appears that the theoretical precision of this device only depends on the angular speed of shafts, but not on the number of pulses per revolution of the encoder. In practice, intrinsic encoder accuracy (i.e. grating or electronic signal processing precision) directly affects precision measurements. Alternatively, the number of pulses per revolution of the encoder specifies the resolution. We examined the possibility of calibrating encoders through a specific test rig. The determination of corrective data assigned to each gratings leads to a non significant improvement of the precision measurement. The coherence from one revolution to another does not present any significant deterministic component. The overall precision achieved is less than 0.03 second of arc on each frequency of the power spectral density. This calibration device only gives a good assessment of eccentricity induced by mechanical mounting of optical disks on a shaft, compared with the direct measurement on grating disks. The correlation between the two measurements is less than 3% of the magnitude of the relative eccentricity. Thus, encoder technique seems to be a cheap and easy way to implement Transmission Error measurement on real mechanical systems with high precision and sufficient reliability

Low-Cost Laser-Based Localization System for Agricultural Machines

This paper describes the design and test of a low-cost localization system for agricultural applications, which determines a tractor position in fields up to 0.5 km with an uncertainty of about 1 m. The proposed system employs a standard unmodified laser head, which is commonly used for field leveling, plus a reference ground-fixed laser receiver and requires neither laser modulation nor expensive time-of-flight measurements of light beam

Modeling of SAR signatures of shallow water ocean topography

A hydrodynamic/electromagnetic model was developed to explain and quantify the relationship between the SEASAT synthetic aperture radar (SAR) observed signatures and the bottom topography of the ocean in the English Channel region of the North Sea. The model uses environmental data and radar system parameters as inputs and predicts SAR-observed backscatter changes over topographic changes in the ocean floor. The model results compare favorably with the actual SEASAT SAR observed backscatter values. The developed model is valid for only relatively shallow water areas (i.e., less than 50 meters in depth) and suggests that for bottom features to be visible on SAR imagery, a moderate to high velocity current and a moderate wind must be present

Conditioning of BPM pickup signals for operations of the Duke storage ring with a wide range of single-bunch current

The Duke storage ring is a dedicated driver for the storage ring based oscillator free-electron lasers (FELs), and the High Intensity Gamma-ray Source (HIGS). It is operated with a beam current ranging from about 1 mA to 100 mA per bunch for various operations and accelerator physics studies. High performance operations of the FEL and gamma-ray source require a stable electron beam orbit, which has been realized by the global orbit feedback system. As a critical part of the orbit feedback system, the electron beam position monitors (BPMs) are required to be able to precisely measure the electron beam orbit in a wide range of the single-bunch current. However, the high peak voltage of the BPM pickups associated with high single-bunch current degrades the performance of the BPM electronics, and can potentially damage the BPM electronics. A signal conditioning method using low pass filters is developed to reduce the peak voltage to protect the BPM electronics, and to make the BPMs capable of working with a wide range of single-bunch current. Simulations and electron beam based tests are performed. The results show that the Duke storage ring BPM system is capable of providing precise orbit measurements to ensure highly stable FEL and HIGS operations

Integrating body scanning solutions into virtual dressing rooms

The world is entering its 4th Industrial Revolution, a new era of manufacturing characterized by ubiquitous digitization and computing. One industry to benefit and grow from this revolution is the fashion industry, in which Europe (and Italy in particular) has long maintained a global lead. To evolve with the changes in technology, we developed the IT- SHIRT project. In the context of this project, a key challenge relies on developing a virtual dressing room in which the final users (customers) can virtually try different clothes on their bodies. In this paper, we tackle the aforementioned issue by providing a critical analysis of the existing body scanning solutions, identifying their strengths and weaknesses towards their integration within the pipeline of virtual dressing rooms