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Engineering and Technology Professions
Published in Quamrul H. Mazumder, Introduction to Engineering, 2018
Software engineers begin the development process by asking how the customer plans to use the software. Using that customer input, the programmer develops the program and writes the code. After the code is written, software engineers test the program for reliability, user-friendliness, and other requirements as specified by the customer. The software developers can be grouped into two major areas: Applications software developers: Application software developers develop computer applications, such as word processors, spreadsheet, and games, for consumers. Application software may include custom software for a specific customer or commercial software to be sold to the general public.Systems software developers: Systems software developers design and develop the systems, such as operating systems, that keep computers functioning properly. They also develop system interfaces that allow users to interact with the computer.
An Overview of Integration Techniques in the Media Industry
Published in John Footen, Joey Faust, The Service-Oriented Media Enterprise, 2012
Custom software also provides an ideal user interface for the enterprise. A media organization may use some specific terms or concepts in its day-to-day business that are not shared by other enterprises, even competitors! Because these terms are probably also not shared by any media vendors, they would not work their way into any products purchased by the enterprise unless those products can be heavily configured to insert them. However, with custom software development, the way the enterprise likes to do business can be built right into the system. For example, if a post house develops internal “work orders” for itself and external “job orders” for its clients, a vendor-provided scheduling system would have to be customized to produce both of these programmatically. However, a custom solution could be built around these business objects, thinking of the data in the exact same way that the people in the organization do.
Interactive Multimedia Technology in Learning: Integrating Multimodality, Embodiment, and Composition for Mixed-Reality Learning Environments
Published in Ling Guan, Yifeng He, Sun-Yuan Kung, Multimedia Image and Video Processing, 2012
David Birchfield, Harvey Thornburg, M. Colleen Megowan-Romanowicz, Sarah Hatton, Brandon Mechtley, Igor Dolgov, Winslow Burleson, Gang Qian
Physically, SMALLab consists of a 15′ × 15′ × 12′ portable, freestanding media environment (Birchfield et al. 2006). A cube-shaped trussing structure frames an open physical architecture and supports the following sensing and feedback equipment: a six-element array of Point Grey Dragonfly firewire cameras (three color, three infrared) for vision-based tracking, a low-cost eight-camera OptiTrack marker-based motion capture system for accurate position and pose tracking, a top-mounted video projector providing real-time visual feedback, four audio speakers for surround sound feedback, and an array of tracked physical objects (custom-made glowballs and marker-attached rigid objects). A networked computing cluster with custom software drives the interactive system.
Instantaneous mapping of liquid crystal orientation using a polychromatic polarizing microscope
Published in Liquid Crystals, 2023
Mojtaba Rajabi, Oleg Lavrentovich, Michael Shribak
Figure 4 confirms that the PPM and MicroImager director orientation maps match quite well. The discrepancy can be caused by the inaccuracy of the linear approximation, calibration of devices, scaling and aligning errors, and a slightly different focus. Currently, a PPM cannot measure the retardance amount, which is possible with MicroImager. However, the PPM generates the map of director orientation instantaneously (within the time needed by the camera to capture the image), while the MicroImager requires 7 sec. The PPM can utilise objective lenses (Pol or DIC) with any magnification, while MicroImager works with only four low-magnification objective lenses, 2x, 5x, 10x, and 20x. The cost of PPM is considerably lower than that of the MicroImager. A PPM is actually a small mechanical attachment to an existing microscope. The MicroImager is a standing-alone microscope with custom software.
Experimental study on the heat balance of turbocharged marine diesel engines with variable coolant flow
Published in Ships and Offshore Structures, 2022
Bo Zhang, Ping Zhang, Fanming Zeng
The piston temperature was measured using a storage steady-state temperature measuring device consisting of an integrated circuit—which was sealed in a block and fixed in the piston pin boss—moving with the piston. A real-time clock chip, data memory, and batteries were integrated into the sealing block. Omega TT-K-40 thermocouples were used to measure temperature, the temperature signals being transmitted and stored in the memory during the experimental process. After the experiment, the data were exported using custom software. The device did not require an external signal line, which was convenient for measurements. Moreover, signal interference was avoided in the transmission process, ensuring that the measurement accuracy was higher. The five representative measuring points are shown in Figure 4, with point 1 being located in the middle of the top piston ring land, point 2 in the inlet valve relief, point 3 in the central protrusion area of the piston top, point 4 in the piston bowl, and point 5 in the exhaust valve relief.
Effects of weighing phase duration on vertical force-time analyses and repeatability
Published in Sports Biomechanics, 2022
Brendan L. Pinto, Jack P. Callaghan
The first 2 s of the quiet standing period and the last 1.5, 1 and 0.5 s of this 2 s window were used. For each of these four weighing phases, system weight (WPav), onset threshold (5xWPsd), movement onset time, net impulse, take-off velocity and take-off displacement were determined. The respective WPav was subtracted from the force-time series. The onset of the jump was defined as the instant after the 2 s quiet standing period where the vertical force increased or decreased by a threshold of 5xWPsd of the respective weighing phase (Dos’Santos et al., 2017; McMahon et al., 2018; Pérez-Castilla, Rojas, García-Ramos et al., 2019b). Trapezoidal integration from the end of the first 2 s of the quiet standing period to the instant of take-off was used to calculate net impulse, to limit the errors accumulated from integrating the quiet standing period (Pinto & Callaghan, 2021). Take-off was identified as the instant that force decreased below the respective system weight (i.e., below—WPav; Pinto & Callaghan, 2021). Vertical take-off velocity was calculated by dividing the net impulse by mass (mass determined by WPav divided by 9.81 m/s2). Vertical displacement was calculated by integrating the velocity-time signal (impulse-time signal divided by respective weighing phase mass) to calculate take-off displacement. Each trial was visually inspected to verify the collected data and analyses. These procedures were performed using custom software coded in Python (Python Software Foundation, Wilmington, DE, USA).