Journal articles: 'Light-based Technologies and Design'

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Koo, Bonwoo, Haneul Yoo, Ho Jeong Choi, Min Kim, Cheoljae Kim, and Ki Tae Kim. "Visible Light Photochemical Reactions for Nucleic Acid-Based Technologies." Molecules 26, no. 3 (January 21, 2021): 556. http://dx.doi.org/10.3390/molecules26030556.

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The expanding scope of chemical reactions applied to nucleic acids has diversified the design of nucleic acid-based technologies that are essential to medicinal chemistry and chemical biology. Among chemical reactions, visible light photochemical reaction is considered a promising tool that can be used for the manipulations of nucleic acids owing to its advantages, such as mild reaction conditions and ease of the reaction process. Of late, inspired by the development of visible light-absorbing molecules and photocatalysts, visible light-driven photochemical reactions have been used to conduct various molecular manipulations, such as the cleavage or ligation of nucleic acids and other molecules as well as the synthesis of functional molecules. In this review, we describe the recent developments (from 2010) in visible light photochemical reactions involving nucleic acids and their applications in the design of nucleic acid-based technologies including DNA photocleaving, DNA photoligation, nucleic acid sensors, the release of functional molecules, and DNA-encoded libraries.

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UDDIN, MOHAMMED RAFIQ, GAZI MAEEN -UR- RASHID, and MD SHAHIDUL ISLAM. "MICROCONTROLLER BASED LIGHT CONTROL." International Journal of Software Engineering and Knowledge Engineering 15, no. 02 (April 2005): 319–24. http://dx.doi.org/10.1142/s021819400500235x.

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A microcontroller-based control system is a direct outgrowth of the extensive advances in the Integrated Circuit design and microelectronic device processing technology. This has led to the development of new forms of technologies. This paper presents a technique of microcontroller based control system for controlling the lights of a room. Using the technique, according to the intensity of the sunlight in a room, the states of light of that room will change. Therefore we need to collect data or information from the environment using light sensors to control lights. The microcontroller collects the information from the atmosphere and changes the state of different lights. The analog data collected by the sensors are converted to digital form by an Analog to Digital Converter (ADC) and then fed to the microcontroller. The output data stream of the microcontroller is in digital form by which analog device lights will be controlled.

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Maler, Eve. "The design of everyday identity." Online Information Review 33, no. 3 (June 19, 2009): 443–57. http://dx.doi.org/10.1108/14684520910969899.

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PurposeThe purpose of this paper is to examine trends towards “user centricity” in web‐based digital identity technologies, and analyse these technologies in light of universal principles of human‐centred design and usability in order to recommend future directions.Design/methodology/approachWeb users' habits and relevant usability research are analysed and requirements for identity‐enabled online interactions are proposed given this context. Modern identity technologies of various types are then studied to assess their ability to satisfy the requirements.FindingsThe results of these analyses point towards a possible explanation for the lack of wide adoption of today's user‐centric solutions.Research limitations/implicationsBased on the findings of the analyses, practical implications and recommendations are offered.Originality/valueThe paper's discussion of usability factors to consider and its set of final recommendations in light of these factors are new work that may be useful to identity management developers and deployers looking to achieve better user adoption, as well as to researchers and innovators in the fields of social networking and vendor relationship management.

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Riurean, Simona. "Design and Evaluation of Visible Light Wireless Data Communication Models." Journal of Digital Science 2, no. 2 (December 29, 2020): 3–13. http://dx.doi.org/10.33847/2686-8296.2.2_1.

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The technologies based on the radio frequency used for wireless transmission indoor are more congested than ever these days, therefore several wireless communication alternatives are intensively searched. Some most promising technologies are based on the optical part of the electromagnetic spectrum. The benefits and drawbacks in optical wireless data communication models design are presented in this work. The key characteristics of the VLC systems are briefly discussed, as well. Some models developed for wireless data transfer in visible light communication and infrared are presented, and their operation related to the data rate and the length of the optical link, are briefly compared.

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Kilina, Mariya, Vyacheslav Grishenko, and Denis Dymochkin. "End-to-end engineering technologies as resource-saving technologies." E3S Web of Conferences 279 (2021): 01005. http://dx.doi.org/10.1051/e3sconf/202127901005.

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The article discusses approaches and methods to engineering design in light of INDUSTRY 4.0 technology. Versions of serial and parallel design are described. An analysis of end-to-end design in accordance with INDUSTRY 4.0 technologies is presented, the advantages of this approach to creating complex mechanical engineering facilities are shown. These examples show a reduction in resources and time to develop new design objects. So the use of Wave technology in design allows you to reduce the cost of engineering personnel by 66%, increase iterative procedures while reducing the time of design procedures, reduce the number of elements of the system, without reducing its reliability.

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Di Nardo, S., P. Farinelli, T. Kim, R. Marcelli, B. Margesin, E. Paola, D. Pochesci, L. Vietzorreck, and F. Vitulli. "Design of RF MEMS based switch matrix for space applications." Advances in Radio Science 11 (July 4, 2013): 143–52. http://dx.doi.org/10.5194/ars-11-143-2013.

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Abstract. RF MEMS based switch matrices have several advantages compared to the mechanical or solid-state switch based ones for space applications. They are compact, light and less lossy with a high linearity up to high frequency. In this work, a 12 × 12 switch matrix with RF MEMS and LTCC technologies is presented based on the planar Beneš network. The simulated performance of the 12 × 12 switch matrix is below −12 dB IL (Insertion Loss) up to C band and −15 dB RL (Return Loss) up to Ku band. Moreover, it has a good isolation better than −50 dB. A 4 × 4 switch matrix with the same design process and technologies is fabricated and measured to verify the 12 × 12 switch matrix design process. The measured performance agrees very well to the simulations.

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Blandet, Thierry, Levin Erbilgin, Nicolas Vergnes, Nicolas Hoerter, and Olivier Lehmann. "Design of new daylight simulators on architectural scale models." SHS Web of Conferences 64 (2019): 03010. http://dx.doi.org/10.1051/shsconf/20196403010.

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To enable students to evaluate the impact of light on the scale models of their architectural projects, two physical simulation systems have been built: a mirror box and a sun and sky simulator. Both devices integrate LED-based light sources. We have integrated several models for the computation of the sky image: luminance models and colour appearance models. The integration of the recent and evolving LED technologies explains how our simulators are innovative.

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Molyakov, Andrey. "Elemental Design Base of Chinese Supercomputer Technologies." Computer and Information Science 13, no. 2 (April 24, 2020): 43. http://dx.doi.org/10.5539/cis.v13n2p43.

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China intends to close the technological gap from Western countries in microprocessor production by 2021. 46 new projects worth billions of dollars have already been launched in the country. Most of these projects receive direct or indirect state support, which creates a huge demand for domestic semiconductors. By a government decree, all servers in government offices and state-owned enterprises will be preferentially equipped with processors of domestic production. As a result, their sales are expected to grow at a rate of 20% annually. First of all, we are talking about “Loongson”, “Shenwei” and “Phytium” chips (the latter are the development of the Chinese military-industrial complex). The Shenwei processors, which have proved their effectiveness, are promising: they are the ones that run the world's most powerful supercomputer, Sunway Taihu Light, which consists of 10.65 million cores and performs 93 quadrillion operations per second.

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Mo, Tong, Jingmin Xu, Zhongjie Wang, Yufei Ma, Heyuan Huang, Yuan Wang, Ying Liu, Jun Zhu, and Xiaofei Xu. "Service Composition Based Software Solution Design." International Journal of Service Science, Management, Engineering, and Technology 1, no. 2 (April 2010): 19–32. http://dx.doi.org/10.4018/jssmet.2010040102.

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Service composition and Web mash-up are promising for meeting specific business requirements by integrating multiple distributed services and SaaS (Software as a Service) has become a popular way of software development and delivery paradigm. An application that meets the business challenges the customer faces in managing its supply chain by integrating two existing SaaS offerings into a newly developed technology presented to validate the service composition technologies. This paper contributes with a practice of a light weight approach of the problems that are inevitable in SaaS integration such as data synchronization, process control, and identification. The purpose of this paper tries to provide a reference for researchers and engineers in this domain.

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CENGİZ, Mehmet Sait. "DAYLIGHTING APPLICATION SUITABLE FOR ARCHITECTURAL DESIGN WITH LIGHT TUBE IN WAREHOUSES." Euroasia Journal of Mathematics, Engineering, Natural & Medical Sciences 8, no. 17 (September 25, 2021): 195–206. http://dx.doi.org/10.38065/euroasiaorg.689.

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With the increase in the use of daylight in architecture, providing visual comfort values as well as physical and psychological effects on people and minimizing the lighting energy need of the building have become important in terms of design. Today, with the development of daylight technologies, economic light tubes have become popular in Architecture. Light tubes have become an effective method in Architecture in terms of energy efficiency to illuminate areas of a building that are exposed to limited sunlight. In addition, people prefer to use daylight by nature. Therefore, the use of light tubes continues to increase in buildings with modern architecture. However, due to architectural design and necessities, daylight is used in a limited way in interior areas. While architects determine the position of the light tubes in the building in order for daylight to reach the dark and dim spots of the buildings, knowing the Illuminance level performance of the positioned light tubes has become a necessity for efficient use. In the study conducted to solve this problem, the Daylight Factor Method specified in the European Union EN 17037:2018 Standard was used in the use of light tubes. As stated in the relevant standard, the methods in the daylight factor value ISO 15469:2004 were used. The evaluation of the buildings in terms of daylight performance was calculated in the simulation environment according to the horizontal luminance of the daylight openings. With the designed simulation, the values in the conditions specified in the criteria related to the light tubes are provided. In this way, a light tube that provides energy efficiency is compatible with the circadian rhythm and is compatible with the architecture of this building, and optimum illuminance level values have been determined for the warehouse, which is the subject of the study in the simulation environment.

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Xu, Yuanbin, Huafei Yang, Baoping Zou, Wensi Huang, Donghua Li, and Ming Cheng. "Meter Data Management Design Based on Big Data Technologies." Open Cybernetics & Systemics Journal 8, no. 1 (December 31, 2014): 442–47. http://dx.doi.org/10.2174/1874110x01408010442.

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Whitacre, James, and Axel Bender. "Pervasive Flexibility in Living Technologies through Degeneracy-Based Design." Artificial Life 19, no. 3_4 (October 2013): 365–86. http://dx.doi.org/10.1162/artl_a_00116.

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The capacity to adapt can greatly influence the success of systems that need to compensate for damaged parts, learn how to achieve robust performance in new environments, or exploit novel opportunities that originate from new technological interfaces or emerging markets. Many of the conditions in which technology is required to adapt cannot be anticipated during its design stage, thus creating a challenge for the designer. Inspired by the study of a range of biological systems, we propose that degeneracy—the realization of multiple, functionally versatile components with contextually overlapping functional redundancy—will support adaptation in technologies, because it effects pervasive flexibility, evolutionary innovation, and homeostatic robustness. We provide examples of degeneracy in a number of rudimentary living technologies, from military sociotechnical systems to swarm robotics, and we present design principles—including shared protocols, loose regulatory coupling, and functional versatility—that allow degeneracy to arise in both biological and man-made systems.

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Molina-Cantero, Alberto J., Clara Lebrato-Vazquez, Manuel Merino-Monge, Roylan Quesada-Tabares, Juan A. Castro-Garcia, and Isabel M. Gomez-Gonzalez. "Communication Technologies Based on Voluntary Blinks: Assessment and Design." IEEE Access 7 (2019): 70770–98. http://dx.doi.org/10.1109/access.2019.2919324.

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Schuck, G., and W. Steurer. "Design of modular crystallographic lectures with XML based technologies." Acta Crystallographica Section A Foundations of Crystallography 58, s1 (August 6, 2002): c187. http://dx.doi.org/10.1107/s0108767302092504.

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Guo, Shu Jun, Wen Lei Sun, Zong Bao Ping, and Hong Pan. "Development of Injection Mould Design System Based on UG." Advanced Materials Research 204-210 (February 2011): 259–62. http://dx.doi.org/10.4028/www.scientific.net/amr.204-210.259.

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The development process of specialization injection mould design system orienting the injection mould industry based on UG has been studied using related technologies of UG redevelopment for the market demand of more variety, more objective, high quality and short-term concerning the injection mould industry. This paper introduces the key technologies of system development, mainly including interface technologies of UG calls MFC dialog, technologies of parameter modeling and accessing to the database, then demonstrates the process of parameter modeling using this system with an example. The system helps the management for parts library and standard size parameters database of the injection mould, and can enhance the automation and intelligent process of injection mould design.

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Mirriahi, Negin, and Dennis Alonzo. "Shedding Light on Students’ Technology Preferences: Implications for Academic Development." Journal of University Teaching and Learning Practice 12, no. 1 (January 1, 2015): 73–87. http://dx.doi.org/10.53761/1.12.1.6.

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This study built on previous research in 2010 to determine changes to students’ current use of and expectations for future integration of technologies in their learning experience. The findings reveal a continued trend of conservative technology use amongst students but with a growing demand for more integration of technologies for assessment and administrative purposes, podcasts or lecture recordings in flexible and blended course designs. While academic practice has been slow to change, this study reveals a continued need for academic development to focus on strategies that enhance technology adoption amongst academic staff. Students’ preferences from this and the earlier study suggest that they would like more use of technologies, especially mobile technologies for efficient and convenient access to content, communication and assessment that can not only inform academic development and course design for fully online and blended learning courses, but also for the growing number of massive open and online courses (MOOCs) in the education landscape.

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Kvasnytsya Roksolyana. "MODERN TECHNOLOGIES AS A COMPONENT OF THE RUNWAY SCENOGRAPHY." World Science 2, no. 2(42) (February 28, 2019): 52–55. http://dx.doi.org/10.31435/rsglobal_ws/28022019/6362.

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The subject of this article is determined by the need for an analysis of the lighting design and its application, specifically its aesthetic component, in fashion runway design. To analyse the application of modern lighting design techniques, namely light installations, 3D visualization, 3D and 4D holograms while preparing runways for fashion shows.

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Manzhos, Sergei, Chu-Chen Chueh, Giacomo Giorgi, Takaya Kubo, Gopalan Saianand, Johann Lüder, Prashant Sonar, and Manabu Ihara. "Materials Design and Optimization for Next-Generation Solar Cell and Light-Emitting Technologies." Journal of Physical Chemistry Letters 12, no. 19 (May 11, 2021): 4638–57. http://dx.doi.org/10.1021/acs.jpclett.1c00714.

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Ning, Li, Yan Xue, Cheng JinXing, and Sun YingZe. "Design of Visual Platform for Fisheries and Aquaculture Production Based on Geographic Information System Technologies." E3S Web of Conferences 189 (2020): 02020. http://dx.doi.org/10.1051/e3sconf/202018902020.

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With the deterioration of ecological environment and the increasing demand for aquatic products, the development of fishing remains seriously threatened from various aspects, especially for production planning and control in particular place and time. Therefore, this technical paper develops a visual platform based on Geographic Information System (GIS) aim to help managers formulate sensible policy with the intention of achieving sustainable fisheries development. The key design of this system lies in the association of attribute database and GIS technologies referring to the Leftlet map. There are mainly two contributions in this article: (i) the visualizations of aquaculture production quantity are first proposed according to the geographical location and species category; (ii) system provides the superior results of statistical analysis on user interface due to the technical processing on data association and light or color intensities presentations. Furthermore, the web service is constructed and extended on the principles of the Browser/Server (B/S) architecture whose purpose is to reach efficiency of exploitation and operations.

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Zhang, Bao Jun, Wei Hong Bi, Yu Zhang, Qiang Liu, and Jing Wei Xing. "Scanning Measurement of Coated Glass Color-Difference and Design of Anti-Interference." Advanced Materials Research 1008-1009 (August 2014): 1125–29. http://dx.doi.org/10.4028/www.scientific.net/amr.1008-1009.1125.

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Based on the colorimetric theory and combined with the production process of glass industry, a color-difference measurement system was designed. The system was applied to online color-difference detection for coated glass. Scanning measurement of color-difference based on spectroscopy was detailed, and the technologies of light source modulation and signal demodulation synchronization were introduced into the system. This avoided using sensor masks or soft curtain to eliminate backlight interference. Under the light source with fluctuations and other background noise, the new system can get robust measurement values. The experimental results show that the anti-interference method smooths the curve of color-difference, and improves the signal-to-noise ratio. The system meets the demands of practical color-difference testing, and provides a new method for online color measurement with high accuracy.

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Cao, Sheng Zhu, Xue Kang Chen, Xi Yuan Wang, Chuang Han, and Jian Ping Yang. "Design and Fabrication of Micro-Variable Radiator." Applied Mechanics and Materials 217-219 (November 2012): 2533–36. http://dx.doi.org/10.4028/www.scientific.net/amm.217-219.2533.

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Micro-variable Radiator with its small volume, light weight and less power consumption quite meets the requirement of Micro/Nano satellite thermal control. Prototypes fabricated by bulk silicon technology have poor thermal performance owing to their confines of material and process. In this paper, a novel micro-radiator based on laser micro processing technology and polymer material was proposed, its operational principle was introduced and the relationship between structural and thermal performance was analyzed theoretically. A prototype was fabricated by UV laser micro-processing, dip-coating and magnetron sputtering technologies. Test results show that the actuation voltage is 97V and variation of radiation power is about 0.1W.

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Song, Junhui, Min Zhang, and Hua Xie. "Design and Implementation of a Vue.js-Based College Teaching System." International Journal of Emerging Technologies in Learning (iJET) 14, no. 13 (July 15, 2019): 59. http://dx.doi.org/10.3991/ijet.v14i13.10709.

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The proliferation of Internet information technology has fundamentally changed the way of learning. It is now a research hotspot to improve teaching effect in col-leges with Internet information technology. Starting from the actual needs of col-lege teaching, this paper designs a college teaching system based on various In-ternet information technologies. Specifically, the front end was developed under the lightweight progressive Vue.js framework, which relies on the model–view–view model (MVVM); the overall structure of the system was set up based on the browser-server (B/S) architecture; the system functions were realized through HTML5, Node.js and database technology; the compatibility between mobile terminal and desktop was realized under Bootstrap. The system test shows that the Vue.js-based college teaching system operated stably, achieved the design goals and satisfied user demand. The research findings shed important new light on modernization and quality of college teaching.

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Zhang Jianxing. "The Study on Digital Costume Design based on Convergent Technologies." International Journal of Advancements in Computing Technology 5, no. 6 (March 31, 2013): 1177–83. http://dx.doi.org/10.4156/ijact.vol5.issue6.138.

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Gudoniene, Daina, Rytis Maskeliunas, and Danguole Rutkauskiene. "The Model for Learning Objects Design Based on Semantic Technologies." International Journal of Computers Communications & Control 12, no. 2 (March 1, 2017): 227. http://dx.doi.org/10.15837/ijccc.2017.2.1628.

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The paper presents a comparison of state of the art methods and techniques on implementation of learning objects (LO) in the field of information and communication technologies (ICT) using semantic web services for e-learning. The web can serve as a perfect technological environment for individualized learning which is often based on interactive learning objects. This allows learners to be uniquely identified, content to be specifically personalized, and, as a result, a learner’s progress can be monitored, supported, and assessed. While a range of technological solutions for the development of integrated e-learning environments already exists, the most appropriate solutions require further improvement on implementation of novel learning objects, unification of standardization and integration of learning environments based on semantic web services (SWS) that are still in the early stages of development. This paper introduces a proprietary architectural model for distributed e-learning environments based on semantic web services (SWS), enabling the implementation of a successive learning process by developing innovative learning objects based on modern learning methods. A successful technical implementation of our approach in the environment of Kaunas University of Technology is further detailed and evaluated.

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Avinash Malladi et al.,, Avinash Malladi et al ,. "A Study on Technologies in Cloud-Based Design and Manufacturing." International Journal of Mechanical and Production Engineering Research and Development 8, no. 6 (2018): 187–92. http://dx.doi.org/10.24247/ijmperddec201822.

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Potemkin, Vladimir, and Maria Grishina. "Grid-Based Technologies for In Silico Screening and Drug Design." Current Medicinal Chemistry 25, no. 29 (September 26, 2018): 3526–37. http://dx.doi.org/10.2174/0929867325666180309112454.

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Various techniques for rational drug design are presented in the paper. The methods are based on a substitution of antipharmacophore atoms of the molecules of training dataset by new atoms and/or group of atoms increasing the atomic bioactivity increments obtained from an SAR study. Furthermore, a design methodology based on the genetic algorithm DesPot for discrete optimization and generation of new drug candidate structures is described. Additionally, wide spectra of SAR approaches (3D/4D QSAR interior and exterior-based methods – BiS, CiS, ConGO, CoMIn, high-quality docking method - ReDock) using MERA force field and/or AlteQ quantum chemical method for correct prognosis of bioactivity and the bioactive probability have been described. The design methods are implemented at www.chemosophia.com web-site for online computational services.

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Cao, Guozhong, Panfeng Luo, Longfei Wang, and Xing Yang. "Key Technologies for Sustainable Design Based on Patent Knowledge Mining." Procedia CIRP 39 (2016): 97–102. http://dx.doi.org/10.1016/j.procir.2016.01.172.

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DePasse, J. W., A. Caldwell, D. Santorino, E. Bailey, S. Gudapakkam, D. Bangsberg, and K. R. Olson. "Affordable medical technologies: bringing Value-Based Design into global health." BMJ Innovations 2, no. 1 (January 2016): 4–7. http://dx.doi.org/10.1136/bmjinnov-2015-000069.

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Qi, Yu, and Xiao-bo Wu. "Low-carbon Technologies Integrated Innovation Strategy Based on Modular Design." Energy Procedia 5 (2011): 2509–15. http://dx.doi.org/10.1016/j.egypro.2011.03.431.

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Mežinska, Silvija, and Gunta Salmane. "PROGRESSIVE TECHNOLOGIES IN THE DESIGN OF OUTERWEAR REFLECTING ELEMENTS." SOCIETY. INTEGRATION. EDUCATION. Proceedings of the International Scientific Conference 5 (May 20, 2020): 740. http://dx.doi.org/10.17770/sie2020vol5.5013.

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The purpose of this article is to substantiate the use of advanced technologies as a processing method of modern, versatile designing resources and environmentally friendly textiles, and to demonstrate their use in the design of light-reflective material elements in outerwear collections. Functional decorative solutions, using reflective materials, are topical in contemporary fashion design for the dark time of the day and can be realized using modern technology. Research methods: theoretical - literature; empirical - experiment and data processing. Period - 2018/2019. study year. The study is of practical importance as it demonstrates the impact of technological parameters on textiles. The availability of laser processing and 3D equipment at the Rezekne Academy of Technology provides opportunity for experimental work on different thickness, different fiber fabrics with a carbon dioxide laser system and different filaments for 3D printing, determining the optimum processing parameters for a particular type of cloth. As a result, the design of the collection is developed, providing the decorative and functional significance of the garments with reflective elements.

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Nguyen, Van Hoa, Minh Duc Thieu, Huy Nguyen, and Yeong Min Jang. "Design and Implementation of the MIMO–COOK Scheme Using an Image Sensor for Long-Range Communication." Sensors 20, no. 8 (April 16, 2020): 2258. http://dx.doi.org/10.3390/s20082258.

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Radio-frequency technologies are widely applied in many fields such as mobile systems, healthcare systems, television and radio broadcasting, and satellite communications. However, one major problem in wireless communication based on radio frequencies is its impact on human health. High frequencies adversely impact human health more than low frequencies if the signal power transgresses the permissible threshold. Therefore, researchers are investigating the use of visible light waves (instead of the radio-frequency band) for data transmission in three major areas: visible light communication, light fidelity, and optical camera communication. In this paper, we propose a scheme that upgrades the camera on–off keying (COOK) scheme by using it with the multiple-input multiple-output (MIMO) scheme; COOK has been recommended by the IEEE 802.15.7-2018 standard. By applying technologies, such as matched filter, region of interest, and MIMO, our proposed scheme promises to improve the performance of the conventional scheme by improving the data rate, communication distance, and bit error rate. By controlling the exposure time, the focal length in a single camera and using channel coding, our proposed scheme can achieve the communication distance of up to 20 m, with a low error rate.

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Topchiev, A. G. "Design and monitoring of oil and gas industry facilities based on the use of ultra-light aviation and digital technologies." IOP Conference Series: Materials Science and Engineering 734 (January 29, 2020): 012005. http://dx.doi.org/10.1088/1757-899x/734/1/012005.

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Bogue, Robert. "Detecting gases with light: a review of optical gas sensor technologies." Sensor Review 35, no. 2 (March 16, 2015): 133–40. http://dx.doi.org/10.1108/sr-09-2014-696.

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Purpose – This paper aims to provide details of the major optical gas sensing techniques and their applications. Design/methodology/approach – Following an introduction, this paper first identifies the major gas sensing technologies and provides an overview of optical sensing techniques. The sources and impact of the gases most frequently sensed by optical methods are listed. Three non-absorption-based and nine absorption-based methods and their main applications are then described in detail. Brief concluding comments are drawn. Findings – All manner of optical gas sensing techniques have been commercialised and while the majority are absorption-based, several other methods also play a significant role. Some optical gas sensors offer advanced capabilities such as remote monitoring, the creation of 2D and 3D distribution maps, detection of parts per trillion levels and even the visualisation of gases in real time. They play a vital role in protecting workers from hazardous gases, controlling and minimising air pollution and monitoring the atmospheric environment, as well as being used in the food, medical, process, power generation and other industries. Originality/value – This paper provides a detailed insight into optical gas sensing techniques and their uses.

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Limcharoen, Alonggot, Chupong Pakpum, Nirun Witit-Anun, Surasing Chaiyakun, and Pichet Limsuwan. "An Alternative Design of Light Delivery System for Heat-Assisted Magnetic Recording." Applied Mechanics and Materials 217-219 (November 2012): 712–16. http://dx.doi.org/10.4028/www.scientific.net/amm.217-219.712.

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The light delivery system is an important component in heat-assisted magnetic recording technology. It needs a light source and delivery the laser beam to the slider for writing process. However, the different designs lead to the different manufacturing processes, number of process steps and technologies consequently affect to the fabrication cost. This paper aims to propose an alternative design for a light delivery system. The complicated processes to manage a heat in a manufacturing are also take into account to have the final product meets the requirement for HAMR technology. The components are also fabricated which is made for a design and also presented.

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Liu, Xiaoxi, and Yansong Chen. "Digital Media Design Strategy for Stage Based on Four Orders of Design." E3S Web of Conferences 179 (2020): 02034. http://dx.doi.org/10.1051/e3sconf/202017902034.

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In the new media age, digital media technologies, manifested in LED screen, digital projection, artistic installation, digital lighting and other forms have gradually become the new trend in the development of stage design, which is continuously enriching the artistic expressions of stage performances. But new difficulties in stage design arises as digital media technologies become diversified and various professional fields on the stage design become integrated. Four orders of design is a fundamental theory to guide practice. Its integrated design ideas for building systematicity are of vital importance to direct the application of digital media in stage design. By analyzing the core content of four orders of design and reviewing the development tendency of digital media in stage design, this thesis seeks to delve into the role and connotation of the four orders of design in different aspects of digital media in stage design, and ultimately presents methods and strategies for applying digital media in stage design.

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Xia, Yun Ye, and Ling Zhang. "Optimal Design of Hierarchical Spam Filtering Method Based on Greylisting." Applied Mechanics and Materials 197 (September 2012): 553–57. http://dx.doi.org/10.4028/www.scientific.net/amm.197.553.

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With the continuous development of network technology, the proliferation of spam has become a more horrible threat to normal e-mail service than ever before. Although current spam filtration technologies may block some obvious spams, they still fail to recognize large numbers of tricky ones. Therefore, we propose a novel hierarchical spam filtering method called CFBG grounded on Graylisting and use three layers of well-connected modified filtration technologies to fill up those disadvantages of past filtration technologies. The conclusive result of our experiments shows that the new method can provide more powerful filtration and less misjudgment rate reliably.

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O'Brien, Dominic, Sujan Rajbhandari, and Hyunchae Chun. "Transmitter and receiver technologies for optical wireless." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 378, no. 2169 (March 2, 2020): 20190182. http://dx.doi.org/10.1098/rsta.2019.0182.

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Providing a reliable link, with sufficient signal-to-noise ratio (SNR) and bandwidth to deliver high-capacity communications is a critical challenge for optical wireless (OW) communications and understanding and jointly optimizing the performance of the transmitter and receiver subsystems is a key part of this. At the transmitter a source of light, either a laser or a light-emitting diode, must be modulated with the communications signal. The resulting emission must be directed, using optics or steering systems, as required for the particular application, and must be within any safety levels set by relevant standards. The receiver is the most critical part of any optical link, as its design is a dominant factor in determining the received SNR, which determines the capacity and ultimately the utility of the link. A receiver must collect, filter and concentrate signal radiation, then detect and amplify the resulting electrical signal. This review surveys the state-of–the-art transmitter and receiver technologies. Details of design constraints are discussed, and potential future directions discussed. This article is part of the theme issue ‘Optical wireless communication’.

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Zhou, Yao, Jufan Zhang, and Fengzhou Fang. "Stray light analysis and design optimization of geometrical waveguide." Advanced Optical Technologies 10, no. 1 (January 5, 2021): 71–79. http://dx.doi.org/10.1515/aot-2020-0059.

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Abstract Waveguide technology has great prospects of development in optical see-through near-eye displays with larger field of view, lower thickness and lighter weight than other conventional optical technologies. However, the stray light is usually inevitable in current optical design and manufacturing, causing a poor imaging quality. In this paper, the principle and structures of stray light generation are analyzed, and the causes are discussed by non-sequential ray-tracing with mass precision calculation. From the ray-tracing, the suppression of stray light by optimizing design and manufacturing are achieved. A 2 mm-thickness geometrical waveguide with partially reflective mirror array is designed. The field of view of the optimized geometrical waveguide reaches 47° with 10 mm at exit pupil diameter and 20 mm at eye relief.

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Wang, Qi. "Design and Implementation of the Web-Based Book Recommendation System." Applied Mechanics and Materials 427-429 (September 2013): 2143–46. http://dx.doi.org/10.4028/www.scientific.net/amm.427-429.2143.

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The book recommendation system is mainly designed with Struts2 + Hibernate + Spring technologies in the Web design. This paper analyzes the functions of the system, introduces the systems architecture and the key technologies of system implementation, and proves the effectiveness and practicability of the system through experiment.

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Xu, Jin, Jian Wei Tian, Qiao Wang, and Zheng Mao Mei. "Research of College Classroom Intelligent Lighting Adjustment System Based on ARM." Advanced Materials Research 760-762 (September 2013): 881–85. http://dx.doi.org/10.4028/www.scientific.net/amr.760-762.881.

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Research of college classroom intelligent Lighting control system is based on the point of view of intelligence and energy saving. Considering the phenomenon of lighting waste and poor system management, a design of high stability and low power consumption intelligent Light control system is proposed. Through the research of distribution method of light source and the application of CAN bus communications technologies, this paper mainly introduces a distributed light control system based on ARM. According to the demand of indoor illumination, the system can achieve real-time and accurate regulation of all classrooms lights. Compared with the traditional lighting control system, besides the characteristic of energy saving, the system also is characterized by strong anti-interference and intelligent management etc.

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Lobanov, Yevhenii, and Glib Petchenko. "Investigation of the Ceiling Fixtures Design Evolution and LED Light Bar Alternative Concept Design Formation." Lighting engineering and power engineering 60, no. 1 (April 30, 2021): 1–8. http://dx.doi.org/10.33042/2079-424x.2021.60.1.01.

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The purpose of the work is to study the development of concepts and technologies for the manufacture of ceiling fixtures to light the interior of buildings – office, public and administrative ones, etc. It is known that fluorescent lamps have long been used for interior lighting. Massive diffusers made of matte polycarbonate sheets were used to smooth the light intensity curve of such luminaires and bring it to the cosine light distribution. Due to the matte coating of the diffuser, the luminous part of the light fixtures acquired, with a fairly good approximation, the properties of an equally bright surface. Such surfaces are known to have a cosine light distribution and are very convenient for lighting. In the early 2000s, the problem of energy saving worsened, which led to a significant reduction in the number of luminaires of this type. These changes have also affected the approaches to the design of indoor light fixtures. The major difference of the new modifications of fluorescent fixtures is the absence of a matte reflector, which is very uneconomical in terms of energy saving, since it significantly decreased the luminous flux. The refusal to use the diffuser led to the emergence of fluorescent fixtures with a specular reflection system and shutters, which limited the dazzling effect of such lamps. However, with the parallel development of LED technology, the concept of choosing a light source in indoor lighting fixtures began tochange. In grille fixtures, LEDs were gradually replacing fluorescent ones. Nowadays, manufacturers' websites offer a fairly wide selection of LED fixtures. They differ in the price, quality of LEDs used, design and technological solutions. Recently, the volume of production and range of LED light bars has been increasing. The article presents an attempt to consider which fixtures offered on the modern market are the most balanced in terms of engineering solution in the context of lighting, operational, pricing, technological and certification characteristics. Based on the analysis of fixtures of different types and modifications, the authors concluded that the most optimal engineering solution is ceiling LED light bars and developed a method of their design and certification.

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Xiao, Lu, Immaculate Namukasa, and Yibing Zhang. "Design-based mathematics workshops." New Library World 117, no. 3/4 (March 14, 2016): 138–57. http://dx.doi.org/10.1108/nlw-08-2015-0059.

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Purpose – The purpose of this paper is to present a workshop model for engaging children and parents in mathematics activities in public libraries or other informal education settings. Design/methodology/approach – This paper explores a workshop model for helping the school-aged children learn mathematics outside the school. The model includes five workshop sessions and designs the parent’s role in the mathematics activities. Each workshop session has both a mathematics task activity and a user interface design activity. The model was implemented in a major Canadian city and a major Chinese city over a period of one month. This paper presents the workshop attendees’ experiences and their feedback on the workshop design. It also presents several suggestions on the design of such workshops. Findings – The parents acknowledged that they learned about how mathematics is currently taught in schools and appreciated the opportunities to interact with their children in the workshops. The children participated in the workshops actively and enjoyed the design sessions the most. The potential of using design activities to help children learn mathematics concepts is recognized. Research limitations/implications – The findings suggest that future workshops should provide a structure to the parents’ engagement in design activities, offer one design project that spans several design sessions and set aside time for families to mingle and share experiences with each other. A big limitation of this paper is the small sample size – 12 families participated in the workshops on each site. Although the paper offered rich data about the participants’ experiences, a larger sample would have made the findings more generalizable and conclusive. Practical implications – Computer technologies such as iPad and tablets are increasingly common as public library resources; yet the integration of these technologies into library programs is falling behind. This paper offers one example of how such integration can bring benefits to the patrons, encouraging more considerations to be put on this aspect in library practice. Originality/value – Although many programs are offered in public libraries that facilitate children to learn mathematics concepts, very less research has been reported on the design of these programs. In addition, the existing programs have not considered the inclusion of parent–child design activities for mathematics learning engagement. This paper reports an empirical study that addresses these research gaps. The encouraging results call for more investigations on this workshop model.

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Fu, Wentao, Christoph Haberland, Eva Verena Klapdor, David Rule, and Sebastian Piegert. "Streamlined frameworks for advancing metal based additive manufacturing technologies." Journal of the Global Power and Propulsion Society 2 (January 29, 2018): QJLS4L. http://dx.doi.org/10.22261/jgpps.qjls4l.

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Abstract Metal-based additive manufacturing (AM) technologies such as selective laser melting (SLM) have seen successful applications in the gas turbine industry over the past years. The rapidly growing demand in AM requires in-depth knowledge of the process, materials and design for additive manufacturing (DFAM). However, the material characterization and process development are highly specific to a particular AM system, even for a number of standard alloys such as IN718 that are suitable for gas turbine applications. When the AM system changes or a new material becomes available, the whole development workflow needs to start almost “from scratch,” which consumes considerable time and effort. To address these issues, Siemens Power & Gas has established cross-divisional competence centers for AM to enhance collaborative material and process development. The article describes this framework and its effectiveness in streamlining the AM process and materials development. To close the design and manufacturing process chain, it is also critical to ensure that the full AM potential is accessible in design stages. In this article, a DFAM framework is proposed to drive the design paradigm shift to AM. In the framework, a complete DFAM process is defined based on existing studies of Siemens gas turbine applications. By integrating a set of DFAM methods, tools and considerations into the current gas turbine design processes, the AM-driven product design is enabled. We use Siemens large gas turbine applications to demonstrate the development and industrialization of AM using the frameworks. The benefits in reducing cost, expediting time to market, improving component performance and enabling new design freedom will be highlighted.

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Sun, D. Y. "Based on VPD System Product Design." Advanced Materials Research 271-273 (July 2011): 1757–59. http://dx.doi.org/10.4028/www.scientific.net/amr.271-273.1757.

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This paper uses the technical of the VPD (Virtual Product Design) with the parallel coordination design, and the problem with the tradition design like in some link has been solved. It is possibly interrupt or brings disaster to the insufficiency which directly the entire design will carry on normally, and it proposed that the hypothesized product development design (VPD) the architecture key technologies, through the hypothesized product development design cycle analysis, confirms the VPD technology sophistication fully.

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Nweke, Chukwuma E., and Jan P. Stegemann. "Modular microcarrier technologies for cell-based bone regeneration." Journal of Materials Chemistry B 8, no. 18 (2020): 3972–84. http://dx.doi.org/10.1039/d0tb00116c.

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Gu, Yu Qin, Chun Rong Xue, and Ming Liang Zheng. "Technologies to Reduce Optical Losses of Silicon Solar Cells." Advanced Materials Research 953-954 (June 2014): 91–94. http://dx.doi.org/10.4028/www.scientific.net/amr.953-954.91.

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Optical losses chiefly effect the power from a solar cell by lowering the short-circuit current. There are a number of ways to reduce the optical losses, which includes top contact coverage of the cell surface can be minimized, anti-reflection coatings can be used on the top surface of the cell, reflection can be reduced by surface texturing, and the optical path length in the solar cell may be increased by a combination of surface texturing and light trapping. This work discusses all of the methods to reduce optical losses of silicon solar cells. Surface texturing, either in combination with an anti-reflection coating or by itself, can be used to minimize reflection, but the large reflection loss can be reduced significantly via a suitable anti-reflecting coatings. Significant improvement of the short circuit current after light trapping design was observed. In addition to these methods, top contact design of silicon solar cells is important. The design of the top contact involves the minimization of the finger and busbar resistance, and the overall reduction of losses associated with the top contact.

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Tong, Kuan Zhang, Ying Feng Zheng, and Tong Rang Fan. "The Design of Motor Parameter Test System Based on WAP." Advanced Materials Research 267 (June 2011): 536–42. http://dx.doi.org/10.4028/www.scientific.net/amr.267.536.

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In order to solve the problem of Enterprise employees’ access to motor parameter anytime, anywhere, understand the work state of motor. We apply the WAP related technologies, design motor parameters test based on WAP system, meanwhile, we give the function modules design, software architecture, the key technologies of system realization as well as some problem-solving methods.

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Lestariawan, Eko Nugroho. "Design of Home Electrical Device Controllers Using Fuzzy Logic Based on Raspberry Pi and the Web." Jurnal Jartel: Jurnal Jaringan Telekomunikasi 6, no. 1 (May 7, 2018): 50–56. http://dx.doi.org/10.33795/jartel.v6i1.145.

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Conventional access control systems such as manual light switches are now being developed with electric light switches that can be controlled remotely using a web. Raspberry Pi is one of the newest technologies, namely a mini computer that can be used in an automatic access control system. This technology can be applied using one of the sciences of artificial intelligence, namely fuzzy logic control. Fuzzy logic is an appropriate way to map an input space into an output space. In this final project research is designed a home electric device control system using fuzzy logic based on Raspberry Pi and Web. The Arduino nano is also used in the system as a fuzzy lamp controller. To be able to control via the Raspberry Pi, an ip is needed for communication between the web and raspberry, namely 192.168.1.204. From the test results on the lamp, the light intensity and lamp voltage change based on the light sensor input, the voltage of 10 volts of the lamp produces 10 lux of light intensity, 60 volts = 51 lux and 220 volts = 320 lux while for the fan the speed is directly proportional to the amount of temperature. When the temperature is set to 28 oC and the sensor reads a temperature of 28.25 oC the PWM output of the fan = 95 and when the temperature is 34 oC the output is 40. The greater the PWM output, the slower the fan rotation.

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Jiang, Kai, and Shan Hong Zhu. "Online Virtual Exhibition Hall Design Based on Augmented Reality." Applied Mechanics and Materials 513-517 (February 2014): 1135–38. http://dx.doi.org/10.4028/www.scientific.net/amm.513-517.1135.

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Augmented reality (AR) technology is one of the hot issues in the field of computer vision, There are many technologies for the development of online virtual display, Such as Flash, Java and Web3D technology. Web3D technology is an emerging network3D technology, in which VRML and Cult3D technologies are commonly used. This paper chooses a convenient interactive technologyCult3D, Cult3D Designer platform is given in a 3D virtual scene and product display of the implementation process, through a set of instructions to achieve user interactions with the product and the virtual museum roaming.

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Kang, Hosung, Wajahat Abbasi, Seong-Woo Kim, and Jungsuk Kim. "Fully Integrated Light-Sensing Stimulator Design for Subretinal Implants." Sensors 19, no. 3 (January 28, 2019): 536. http://dx.doi.org/10.3390/s19030536.

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This paper presents a fully integrated photodiode-based low-power and low-mismatch stimulator for a subretinal prosthesis. It is known that a subretinal prosthesis achieves 1600-pixel stimulators on a limited single-chip area that is implanted beneath the bipolar cell layer. However, the high-density pixels cause high power dissipation during stimulation and high fabrication costs because of special process technologies such as the complementary metal-oxide semiconductor CMOS image sensor process. In addition, the many residual charges arising from the high-density pixel stimulation have deleterious effects, such as tissue damage and electrode corrosion, on the retina tissue. In this work, we adopted a switched-capacitor current mirror technique for the single-pixel stimulator (SPStim) that enables low power consumption and low mismatch in the subretinal device. The customized P+/N-well photodiode used to sense the incident light in the SPStim also reduces the fabrication cost. The 64-pixel stimulators are fabricated in a standard 0.35-μm CMOS process along with a global digital controller, which occupies a chip area of 4.3 × 3.2 mm2 and are ex-vivo demonstrated using a dissected pig eyeball. According to measured results, the SPStim accomplishes a maximum biphasic pulse amplitude of 143 μA, which dissipates an average power of 167 μW in a stimulation period of 5 ms, and an average mismatch of 1.12 % between the cathodic and anodic pulses.

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Journal articles on the topic 'Light-based Technologies and Design'

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