Journal articles: '3D tech'

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Kim, Yuri, Hyun-Jung Yun, Bum-Keun Kim, Hee-Don Choi, and Yun-Sang Choi. "3D Printing Technology : Food Tech Analysis." Resources Science Research 4, no. 1 (June 2022): 1–11. http://dx.doi.org/10.52346/rsr.2022.4.1.1.

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Ali, Naiha. "WISE-Tech Design." Journal for Activist Science and Technology Education 11, no. 1 (May 10, 2020): 42–44. http://dx.doi.org/10.33137/jaste.v11i1.34262.

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In this article, a secondary school science student describes her development and implementation of ecologically-sustainable athletics shoes - which she designed and printed with a 3D printer. These shoes represent a research-informed and negotiated action that the student perceived in relationships among fields of science & technology and societies & environments (STSE).

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El-Hamarnah, Soliman. "WISE-Tech Design." Journal for Activist Science and Technology Education 11, no. 1 (May 10, 2020): 36–38. http://dx.doi.org/10.33137/jaste.v11i1.34259.

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In this article, a secondary school science student describes development and implementation of 3D-printed supports - with wooden dowels - to make cost-effective and environmentally sustainable 'parallets,' which are like small parallel bars used in calisthenics training. These were developed as research-informed and negotiated actions to overcome harms the student perceived in relationships among fields of science & technology and societies & environments (STSE).

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Lin, Zhengsong, Yuting Wang, Yang Song, Tao Huang, Feng Gan, and Xinyue Ye. "Research on Ecological Landscape Design and Healing Effect Based on 3D Roaming Technology." International Journal of Environmental Research and Public Health 19, no. 18 (September 10, 2022): 11406. http://dx.doi.org/10.3390/ijerph191811406.

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Impacted by the COVID-19 epidemic, the human sub-health in national high-tech zones (hereinafter referred to as high-tech zones) has become more prominent. It is critical for the mental sub-health group in the high-tech zone to relieve the anxiety and tension caused by the pressure of life and work. This paper uses SketchUp virtual engine (Unity 2019) software, and 3D roaming technology to carry out the ecological landscape transformation design of the Baotzixi ecological corridor in the East Lake High-tech Zone, to construct a 3D roaming landscape scene and measure its therapeutic effect by inviting subjects to participate in an interactive experience experiment on the ErgoLAB platform. The results illustrate that: (1) the thermogram trend shows that the more attractive the 3D roaming landscape scene is, the stronger the subjects’ interest is; (2) the participants have a positive emotional arousal state in the immersive experience of the 3D roaming landscape scene after the modification design; and (3) the mean skin conductance (SC) fluctuation variance of the subjects is 5.819%, indicating that the healing effect is significant in the state of positive emotional arousal. The research results show that there is a connection between the subjects and the 3D roaming landscape scene after the transformation design of “high interest, emotional arousal and significant healing”.

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Sun, Yang. "Optimization Analysis of Knowledge Label Personalized Dynamic Recommendation System Based on Artificial Intelligence Algorithm." Journal of Physics: Conference Series 2146, no. 1 (January 1, 2022): 012027. http://dx.doi.org/10.1088/1742-6596/2146/1/012027.

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Abstract There are many p roblems and shortcomings in traditional 3D modeling tech of environment design, and there is a great room for amelioration in reconstruction method and reconstruction precision. As an intelligent means integrating computer, info network and big data, CAD can create a more experiential and interactive environment design atmosphere. Based on this, this paper first analyses the concept and connotation of 3D modeling of environmental design, then studies the computer-aided environment design, and finally gives the 3D modeling tech of computer-aided environmental design.

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Molorodov, Yuri I., and Efrem A. Sleptsov. "3D visualization technologies for virtual 3D reconstruction of the Earth's history." Geoinformatika, no. 4 (December 27, 2022): 20–27. http://dx.doi.org/10.47148/1609-364x-2022-4-20-27.

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The work is devoted to the study of the possibilities of three-dimensional visualization technologies in browsers that allow for reconstruction of various time segments of the Earth and subsequent modular integration into the high-tech popular science Internet portal "History of the Earth: geological perspective" [1]. The possibilities of interaction of augmented reality with this portal are shown. An important goal of the work is to popularize modern scientific geological knowledge based on the use of popular scientific multimedia content and appropriate software. The Internet resource is aimed at a wide range of Internet users.

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Steimle, Alexander. "3D Micro-Printing: A new Era for Med-Tech Applications." Laser Technik Journal 15, no. 1 (January 2018): 32–34. http://dx.doi.org/10.1002/latj.201800003.

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Tummala, Rao. "3D Glass and Silicon Interposers with TPV vs. 3D ICs with TSV." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2012, DPC (January 1, 2012): 000757–90. http://dx.doi.org/10.4071/2012dpc-tp11.

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3D Packaging has been emerging as the dominant theme for more than a decade. It started as package on package stacking in the 1970s for memory devices. More recently, it moved to stacked, wire bonded chips as well as miniaturized package-on-package (POP). Stacking with flip chip soon followed. In all these cases, ICs are fabricated in wafer fabs and packaging of these ICs was subsequently performed independently. The next natural evolution to be expected is to eliminate external interconnections outside the ICs by means of through vias, now called TSVs. But this became revolutionary, complex and costly. It impacted wafer fabrication by virtue of having to co-process transistors, BEOL wiring and TSV interconnections, all in the wafer fab. This is referred to as 3D ICs with TSV. The benefits of 3D ICs are overwhelming. They include highest performance in smallest size by virtue of stacking many ultra-thin ICs and interconnecting them with through-silicon-vias. But such a technology is also complex and costly to manufacture. It presents many other problems that include thermal management, testability, and extendibility. Georgia Tech PRC proposes to demonstrate lower cost and simpler 3D Interposers with TPVs to address most of the above challenges. In this scenario, through-package-vias (TPV) are fabricated in the ultra-thin and low-cost silicon or glass interposers at the same I/O density or pitch as in TSVs in the logic ICs but without the need for TSVs in the logic ICs. Such a concept is 3-dimensional; allowing stacking of ICs on both sides of the interposer with the same I/O pitch as TSVs and yet minimizes the thermal, testability and extendibility problems. This paper presents the status, progress and remaining challenges of 3D Interposer concept at Georgia Tech involving more than 25 companies in a global consortium.

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Courtland, Rachel. "3D X-ray tech for easy reverse engineering of ICs [News]." IEEE Spectrum 54, no. 5 (May 2017): 11–12. http://dx.doi.org/10.1109/mspec.2017.7906884.

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Kang, C. L., Y. Cheng, F. Wang, M. M. Zong, J. Luo, and J. Y. Lei. "THE APPLICATION OF UAV OBLIQUE PHOTOGRAMMETRY IN SMART TOURISM: A CASE STUDY OF LONGJI TERRACED SCENIC SPOT IN GUANGXI PROVINCE." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-3/W10 (February 7, 2020): 575–80. http://dx.doi.org/10.5194/isprs-archives-xlii-3-w10-575-2020.

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Abstract. With the application of UAV Oblique photography, rapid 3D real-time modeling based on aerial image data has become a new technology in the field of 3D modeling. In view of the current poor mapping and inability to reuse the basic surveying and mapping data in the publicity and display, dynamic planning, etc., based on the UAV photogrammetry technology that is used to rapidly and accurately collect image data of the Longji terraced scenic spot in Guilin, Guangxi, this paper develops a platform by 3D real-time modeling technology with the combination of the high-tech such as digital mapping to realize the three-dimensional navigation and smart tourism of the scenic spot. The practical results show that the application can better meet the actual needs of high precision, large scale, wide audience, strong interaction, etc., which effectively alleviates the contradiction between the protection and utilization of cultural resources in cultural tourism, expands the cultural resources audience, and provides high-tech support to the cultural tourism.

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Gao, Zihang, and Nannan Zhao. "Research on Key Technologies of FDM 3D Printing Based on Computer Assisted 3D Reconstruction." Journal of Physics: Conference Series 2083, no. 4 (November 1, 2021): 042011. http://dx.doi.org/10.1088/1742-6596/2083/4/042011.

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Abstract As a core technology in the field of high and new tech manufacturing,3D printing occupies an important position in the production process of aviation, shipbuilding, and automobiles. With the rapid development of 3D printing basic theory in recent years, how to further improve product accuracy, quality and modeling efficiency has become the current research focus in this field. Firstly, we conducted further research on the key technologies of FDM 3D printer, and combining 3D reconstruction technology with pretreatment technology. Secondly, we constructed and optimized the corresponding model layered slice and filling path planning algorithm. Thirdly, we designed a 3D suitable for rapid prototyping products printing control system. The research can provide an effective experience for the application of 3D printing technologies.

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Chernykh, Alexander Vasilievich, Yuri Valentinovich Maleev, Artem Nikolaevich Shevtsov, Alexey Vladimirovich Volkov, Artem Sergeevich Sundeyev, and Nikolai Andreevich Malyukov. "Modern Trends in Transplantation Using High‒Tech Methods." Vestnik of Experimental and Clinical Surgery 10, no. 2 (September 23, 2017): 96–102. http://dx.doi.org/10.18499/2070-478x-2017-10-2-96-102.

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Provides an overview of modern domestic and foreign literature, discuss the main and most relevant approaches to the solution of the accumulated problems of transplantation in the 21st century, when, as never before, the acute problem of shortage of donor organs and rejection during transplantation. One of the variants of their solution is the decellularization of the donor organ with subsequent decellularization acellular matrix (ECM) stem cells (SC) of the recipient. Another area, which in recent years very actively developing is bioprinting (3D the same results for bioprinting). For the first time encountered with this innovation, the very essence of creation on the computer using 3D modeling seems to be a history of science fiction, but this is a real example of how well-developed modern medical science. The above options give you the opportunity to solve the main question of transplantation – rejection of the transplanted organ, for patients undergoing surgery, transplantation, forced life to take immunosuppressive drugs that make a person defenseless against infectious agents and opportunistic viral infection. The article presents the main stages already achieved; the philosophy and development prospects of regenerative medicine; the difficulty faced by scientists in the search for suitable options to prevent the development of immune responses, as well as the use of different materials. The decellularization and bioprinting allow you to create the autograft that solves the problem of immune rejection of the transplanted organ. Defined a detailed description of each of the presented directions of development and provides an objective assessment of their effectiveness and possibility of application at this point in time. Examples of the use of the considered techniques, the advantages and disadvantages of each method.

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Liu, Jun, and Cheng Mao Li. "The Application of Maya in Film 3D Animation Design." Key Engineering Materials 480-481 (June 2011): 998–1002. http://dx.doi.org/10.4028/www.scientific.net/kem.480-481.998.

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With the economic becomes globalization and integration. Animation is a high-tech industry. It contains some factors, such as capital-intensive, labor-intensive, technology-intensive and knowledge-intensive and so on. With the advantages of quick startup, expansion and strong, great space for development, as well as zero pollution, animation became the most important entertainment industry and can keep pace with videos and music.

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Grącki, Grzegorz, Krzysztof Gębarski, and Hubert Kubik. "The application of a SMARTTECH 3D scanner for the production of additional parts / industry: motorcycle accessories." Advanced Technologies in Mechanics 2, no. 4(5) (December 29, 2016): 33. http://dx.doi.org/10.17814/atim.2015.4(5).31.

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Enduro-Tech is the best known suppliers of parts in the off-road racing motorcycle industry. The company uses 3D printing technology based on melting stainless steel powder in order to design dedicated, additional or replacement parts. Application of the 3D digitization of an object has enabled optimization and accelerated the process of creating prototypes. The article presents an example process of design and manufacturing of dedicated engine casing.

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Perry, Anna. "Factors comprehensively influencing acceptance of 3D-printed apparel." Journal of Fashion Marketing and Management 21, no. 2 (May 8, 2017): 219–34. http://dx.doi.org/10.1108/jfmm-03-2016-0028.

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Purpose The purpose of this paper is to incorporate an extended technology acceptance model (TAM) and examine how various factors comprehensively influence and determine consumers’ perceptions, attitude, and usage intention of 3D-printed apparel. Design/methodology/approach An online survey was designed using established measures and 1,002 participants were recruited. Findings All external variables were related. Beyond indirect influences, tech optimism still moderately influenced ease of use, but weakly influenced attitude; aesthetics still strongly influenced usefulness and attitude, but weakly influenced usage intention; performance still strongly influenced ease of use, usefulness, and attitude. In addition, only indirect influences came from tech optimism to usefulness and usage intention, aesthetics to ease of use, and performance to usage intention. The TAM relationships were mostly confirmed, except ease of use to usefulness. Usage intention was mostly determined by attitude, which was largely influenced by design, performance, and usefulness, and limitedly contributed by aesthetics and usefulness. Research limitations/implications Participants’ response might be influenced by the provided materials of 3D-printed apparel. Practical implications The present study explicitly showed a complete picture about all possible influences among factors. Business managers can make strategies to meet consumers’ needs based on the current study without worrying about overlooking any possible effects. Originality/value The current study, for the first time, examined: consumers’ adoption intention of 3D-printed apparel, the relationships among external variables, and how external factors comprehensively influenced consumers’ perceptions, attitude, and usage intention.

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Ju, Shen-Haw, Cheng-Chun Yuantien, and Wen-Ko Hsieh. "Study of Lead Rubber Bearings for Vibration Reduction in High-Tech Factories." Applied Sciences 10, no. 4 (February 22, 2020): 1502. http://dx.doi.org/10.3390/app10041502.

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This paper studies the seismic and micro vibrations of the high-tech factory with and without lead rubber bearings (LRBs) using the three-dimensional (3D) finite element analysis. The soil-structure interaction is included using the p-y, t-z, and Q-z nonlinear soil springs, while the time-history analysis is performed under seismic, wind, or moving crane loads. The finite element results indicate that the moving crane does not change the major ambient vibrations of the factory with and without LRBs. For a normal design of LRBs, the high-tech factory with LRBs can decrease the seismic base shear efficiently but will have a much larger wind-induced vibration than that without LRBs, especially for the reinforced concrete level. Because micro-vibration is a major concern for high-tech factories, one should use LRBs with a large initial stiffness to resist wind loads, and use a small final LRB stiffness to reduce the seismic load of high-tech factories. This situation may make it difficult to obtain a suitable LRB, but it is an opportunity to reduce the seismic response without increasing the micro-vibration of high-tech factories.

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Stebnev, V. S., S. D. Stebnev, I. V. Malov, A. V. Zhuravlev, N. I. Skladchikova, and T. Y. Vashcenko. "About operational complications of high-tech phacoemulsification with IOL implantation." Modern technologies in ophtalmology, no. 5 (October 20, 2021): 86–89. http://dx.doi.org/10.25276/2312-4911-2021-5-86-89.

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Purpose. To analyze the nature, frequency and effectiveness of correction of surgical complications during high-tech phacoemulsification (PE) with IOL implantation. Material and methods. A prospective non-randomized study is devoted to the analysis of surgical complications in patients who underwent outpatient FE surgery with IOL implantation. The results of 3000 consecutive operations (3000 eyes) performed in 2019-2020 at the Eye Surgery clinic were studied. The calculation of the IOL was carried out on the diagnostic system "VERION" (Alcon). All operations were performed in the conditions of 3D visualization using the digital system "NGENUITY® 3D Visualization System" (Alcon). Alcon IOLs were implanted: monofocal, multifocal, toric. Results. During the surgical intervention, 33/3000 (1.1%) surgical complications occurred. The main surgical complication was the rupture of the posterior capsule of the lens-26 (0.86%) of the eyes, mainly without loss of the vitreous body-22 (0.73%). Conclusions. 1. The number of surgical complications during high-tech phacoemulsification with IOL implantation was 1.1%. 2. The main one among them was the rupture of the posterior capsule of the lens-0.86%, mainly without loss of the vitreous body-0.73%. 3. High-tech surgical support of operations and correction of the arisen operational complications allowed to successfully eliminate all complications in all cases. Key words: cataract, phacoemulsification, surgical complications, posterior capsule rupture.

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Wang, Dengxia, Patxi Garra, Jean Pierre Fouassier, Bernadette Graff, Yusuf Yagci, and Jacques Lalevée. "Indole-based charge transfer complexes as versatile dual thermal and photochemical polymerization initiators for 3D printing and composites." Polymer Chemistry 10, no. 36 (2019): 4991–5000. http://dx.doi.org/10.1039/c9py00878k.

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Sergeeva, Valeria S., Tatiana V. Bysova, Viktor A. Smirnov, and Alexander V. Ponachugin. "PROBLEMS OF USING METHODS OF 3D MODELING AND 3D PRINTING IN SCIENCE AND PRODUCTION." EKONOMIKA I UPRAVLENIE: PROBLEMY, RESHENIYA 4, no. 10 (2021): 31–36. http://dx.doi.org/10.36871/ek.up.p.r.2021.10.04.005.

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Thanks to the rapid technological progress, the creation of 3D projects and 3D printing tech-nologies have firmly entered the life of every person. 3D modeling and 3D printing technologies are being used more and more every year. The demand for these technologies is growing more and more in all areas of production, education, science and medicine, and the quality of technologies should grow accordingly. 3D modeling has both a number of objective advantages and disadvantages. By studying open sources and special literature, we identified the main advantages and problems of the production of 3D models. The ad-vantages of the technology are an accelerated production cycle compared to traditional modeling, realism, high quality and accuracy of the created models, and at the same time, the disadvantages are the high cost in certain areas of production, the need for specialists in the field of 3D modeling and technical complexity. With the spread of this technology in all spheres of science and production, the requirements for the quality of produced 3D models also increase, for example, in many areas of science there is already a lack of accurate production 3D printers and specialists are forced to develop more and more advanced methods of 3D printing. Also, 3D printers will soon need to work with materials that are not widespread today, this will allow printing human organs, electronic microcircuits, antibiotics and other drugs on 3D printers.

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ANDRIANOV, ANTON M. "ANALYSING TECHNOLOGIES FOR THE COMPREHENSIVE DIGITALISATION OF HIGHTECH INDUSTRIAL PRODUCTION IN AN «INDUSTRY 4.0» PARADIGM." Scientific Works of the Free Economic Society of Russia 228, no. 2 (2021): 298–317. http://dx.doi.org/10.38197/2072-2060-2021-228-2-298-317.

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The author’s research focuses on the analysis of modern technologies of digitalization of high-tech production, actively developing within the paradigm of “Industry 4.0”, which is the basis for the ongoing Fourth Industrial Revolution. The study examines the concept, essence and application potential of such technologies as cyber-physical systems, Industrial Internet of Things, product lifecycle management systems, collaborative robots, Big Data analytics, artificial intelligence and 3D-printing. The profound interconnection and interplay of these technologies within real high-tech manufacturing reflects the systemic nature of the digital transformation of industrial structures, suggesting the importance of their harmonious and integrated application in line with the current level of enterprise automation.

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Zou, Zou. "Adaptive Generation Technology of Lightweight Cellular 3D Printing Path." Lifelong Education 9, no. 5 (August 2, 2020): 188. http://dx.doi.org/10.18282/le.v9i5.1247.

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With the continuous develop ment and progress of the economy and society, the demand for innovative high- tech development in all walks of life has gradually increased, and the corresponding requirements have also been raised in due course. Because the development and application of advanced and innovative technologies can cover a wide range, it is also conducive to vigorously promote the improvement of the fineness of each production product, and better meet the actual development needs of society. Therefore, as a representative of innovative advanced technology, 3D printing technology should be innovated and optimized by relevant technical developers in order to enhance its practical adaptability.

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Mikaeva, S. A., and A. S. Mikaeva. "ASSEMBLING FILASTRUDER." Spravochnik. Inzhenernyi zhurnal, no. 305 (August 2022): 17–22. http://dx.doi.org/10.14489/hb.2022.08.pp.017-022.

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The article describes the creation of a filastruder for recycling plastic into a filament for a 3D-printer, which is able to enter the world market and compete with analogues. The article discusses the models of the filastruder and presents the advantages and disadvantages of existing analogues. The development and technological map, the block diagram of the device and the device code are presented. The ecological and aesthetic assessment of the device is given. All the necessary drawings were made in a special environment for 3D-modeling according to the original dimensions of the components of the project. All parts are made on high-tech equipment: a numerically controlled machine and a 3D-printer.

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Amornvit, Pokpong, and Sasiwimol Sanohkan. "The Accuracy of Digital Face Scans Obtained from 3D Scanners: An In Vitro Study." International Journal of Environmental Research and Public Health 16, no. 24 (December 12, 2019): 5061. http://dx.doi.org/10.3390/ijerph16245061.

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Face scanners promise wide applications in medicine and dentistry, including facial recognition, capturing facial emotions, facial cosmetic planning and surgery, and maxillofacial rehabilitation. Higher accuracy improves the quality of the data recorded from the face scanner, which ultimately, will improve the outcome. Although there are various face scanners available on the market, there is no evidence of a suitable face scanner for practical applications. The aim of this in vitro study was to analyze the face scans obtained from four scanners; EinScan Pro (EP), EinScan Pro 2X Plus (EP+) (Shining 3D Tech. Co., Ltd. Hangzhou, China), iPhone X (IPX) (Apple Store, Cupertino, CA, USA), and Planmeca ProMax 3D Mid (PM) (Planmeca USA, Inc. IL, USA), and to compare scans obtained from various scanners with the control (measured from Vernier caliper). This should help to identify the appropriate scanner for face scanning. A master face model was created and printed from polylactic acid using the resolution of 200 microns on x, y, and z axes and designed in Rhinoceros 3D modeling software (Rhino, Robert McNeel and Associates for Windows, Washington DC, USA). The face models were 3D scanned with four scanners, five times, according to the manufacturer’s recommendations; EinScan Pro (Shining 3D Tech. Co., Ltd. Hangzhou, China), EinScan Pro 2X Plus (Shining 3D Tech. Co., Ltd. Hangzhou, China) using Shining Software, iPhone X (Apple Store, Cupertino, CA, USA) using Bellus3D Face Application (Bellus3D, version 1.6.2, Bellus3D, Inc. Campbell, CA, USA), and Planmeca ProMax 3D Mid (PM) (Planmeca USA, Inc. IL, USA). Scan data files were saved as stereolithography (STL) files for the measurements. From the STL files, digital face models are created in the computer using Rhinoceros 3D modeling software (Rhino, Robert McNeel and Associates for Windows, Washington DC, USA). Various measurements were measured five times from the reference points in three axes (x, y, and z) using a digital Vernier caliper (VC) (Mitutoyo 150 mm Digital Caliper, Mitutoyo Co., Kanagawa, Japan), and the mean was calculated, which was used as the control. Measurements were measured on the digital face models of EP, EP+, IPX, and PM using Rhinoceros 3D modeling software (Rhino, Robert McNeel and Associates for Windows, Washington DC, USA). The descriptive statistics were done from SPSS version 20 (IBM Company, Chicago, USA). One-way ANOVA with post hoc using Scheffe was done to analyze the differences between the control and the scans (EP, EP+, IPX, and PM). The significance level was set at p = 0.05. EP+ showed the highest accuracy. EP showed medium accuracy and some lesser accuracy (accurate until 10 mm of length), but IPX and PM showed the least accuracy. EP+ showed accuracy in measuring the 2 mm of depth (diameter 6 mm). All other scanners (EP, IPX, and PM) showed less accuracy in measuring depth. Finally, the accuracy of an optical scan is dependent on the technology used by each scanner. It is recommended to use EP+ for face scanning.

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Garn, Heinrich, Bernhard Kohn, Christoph Wiesmeyr, Klaus Dittrich, Markus Wimmer, Magdalena Mandl, Gerhard Kloesch, Marion Boeck, Andrijana Stefanic, and Stefan Seidel. "3D detection of the central sleep apnoea syndrome." Current Directions in Biomedical Engineering 3, no. 2 (September 7, 2017): 829–33. http://dx.doi.org/10.1515/cdbme-2017-0174.

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AbstractIn polysomnography, an oronasal thermal airflow sensor and respiratory inductance plethysmography (RIP) belts at thorax and abdomen are used to detect central sleep apnoea. These sensors are uncomfortable to wear, can disturb the patient’s sleep, and data quality can be significantly di-minished if a sensor slips off the patient. Contactless meas-urements would be a desirable alternative. We utilized a 3D time-of-flight sensor to monitor respiratory-related chest movements to decipher epochs of normal breathing and ap-noea in ten adult patients with a total of 467 apnoea events. Time-synchronized comparisons of 3D measurements of chest movements due to respiration to polysomnography signals from rip belts and nasal airflow proved that the 3D sensor provided largely equivalent results. This new tech-nique could support the diagnosis of central sleep apnoea and Cheyne-Stokes respiration.

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Maximov, Y. V., A. R. Abramova, D. L. Kuzminsky, and A. Y. Mokrinskaya. "ASSURANCE OF THE QUALITY OF PROCESSING OF COMPLEX CONTOURED PARTS ON MACHINES WITH VARIABLE ELEMENTS." Izvestiya MGTU MAMI 6, no. 1 (January 10, 2012): 168–74. http://dx.doi.org/10.17816/2074-0530-69970.

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The article highlights the problems arising during processing of parts with a complex contoured profile. There are considered all the stages of formation of the geometrical image of the machine with variable elements. The authors formed a complex of 3D-geometric models of Finc Tech SMV-450-H3 milling machining center, which allows to quickly edit the components without changing the overall structure of the model.

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Yarikov, Anton Viktorovich, Roman Olegovich Gorbatov, Maksim Vladimirovich Shpagin, Ilya Igorevich Stolyarov, Anton Andreevich Denisov, Ruslan Magometovich Kabardaev, Alexander Petrovich Fraerman, Olga Aleksandrovna Perlmutter, and Alexey Stanislavovich Mukhin. "The application of three-dimensional prototyping and printing in reconstructive neurosurgery and vertebrology (literature review and own results)." Vestnik nevrologii, psihiatrii i nejrohirurgii (Bulletin of Neurology, Psychiatry and Neurosurgery), no. 7 (June 11, 2021): 534–56. http://dx.doi.org/10.33920/med-01-2107-05.

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This article is devoted to the analysis of the possibility of using additive technologies in clinical practice. The number of medical specialties that use 3D printing technologies to treat patients is increasing every year. Thanks to the emergence of high-tech qualified medical care, it is possible to carry out the most complex surgical interventions and give a person who is faced with serious diseases a high-quality and fulfilling life. The creation of a 3D model using the data of a specific patient, the use of 3D computer modeling and additive technologies have become a real breakthrough in many areas of surgery. Today, such an approach in planning reconstructive and restorative operations occupies an important position in modern medicine. The authors of the article presented their experience of using additive 3D printing technologies in clinical practice. The researchers paid special attention to the results of the use of additive technologies in the treatment of diseases of the spine: deformities, degenerative-dystrophic and oncological diseases.

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Ruan, Xiao Guang, Rong Rong Zhao, An Jiang Cai, Wan Li Ma, and Jiang Liu. "Research and Application of Cutting Efficiency Optimization Based on VERICUT and UG." Applied Mechanics and Materials 635-637 (September 2014): 612–15. http://dx.doi.org/10.4028/www.scientific.net/amm.635-637.612.

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Use the process of dashboard on the solid high-tech 3D numerical control platform of NC machining process as an example, Using UG to establish the machine and parts model, the tool path have been optimized by VERICUT .As a result, enhances the processing speed, shortening the processing time, improve the cutting efficiency, reducing processing cost and making the process has been optimized .Finally, Reliability and optimization results are verified through numerical control platform instance.

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Jang, Arum, Young K. Ju, and Min Jae Park. "Structural Stability Evaluation of Existing Buildings by Reverse Engineering with 3D Laser Scanner." Remote Sensing 14, no. 10 (May 11, 2022): 2325. http://dx.doi.org/10.3390/rs14102325.

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In the Fourth Industrial Revolution, research and development of application technologies that combine high-tech technologies have been actively conducted. Building information modeling (BIM) technology using advanced equipment is considered promising for future construction projects. In particular, using a 3D laser scanner, LIDAR is expected to be a solution for future building safety inspections. This work proposes a new method for evaluating building stability using a 3D laser scanner. In this study, an underground parking lot was analyzed using a 3D laser scanner. Further, structural analysis was performed using the finite element method (FEM) by applying the figure and geometry data acquired from the laser scan. This process includes surveying the modeled point cloud data of the scanned building, such as identifying the relative deflection of the floor slab, and the sectional shape and inclination of the column. Consequently, safety diagnosis was performed using the original evaluation criteria. This confirms that it is precise and efficient to use a 3D laser scanner for building stability assessment. This paper presents a digital point cloud-based approach using a 3D laser scanner to evaluate the stability of buildings.

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Tabejamaat, Mohsen, Abdolmajid Mousavi, and Marina L. Gavrilova. "Local Comparative Decimal Pattern for Face Recognition." International Journal of Pattern Recognition and Artificial Intelligence 34, no. 12 (March 20, 2020): 2056006. http://dx.doi.org/10.1142/s0218001420560066.

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Rapid growth of social networks has provided an extraordinary medium to share a large volume of photographs online. This calls for designing efficient face recognition techniques that are applicable to images with low resolutions and arbitrary poses. This paper proposes a new pose invariant face recognition method for low resolution images using only a single training sample. A 3D model, reconstructed using Generic Elastic Model (3D GEM) from a frontal view training sample, is used to generate a set of nonfrontal gallery face images. The face region of the nonfrontal query sample is then extracted using the same landmark detection technique as in the 3D GEM algorithm. Afterwards, a novel texture representation technique called Local Comparative Decimal Pattern (LCDP) is proposed to extract features from each of the training and query samples. A set of experimental results on the ORL, Georgia Tech (GT), and LFW face databases demonstrates the efficiency of the proposed method compared to other state-of-the-art approaches.

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Armashova-Telnik, G. S., P. N. Sokolova, and D. V. Degterev. "Additive technologies: an innovative effectdigitalization in industry." Proceedings of the Voronezh State University of Engineering Technologies 82, no. 4 (January 20, 2021): 347–53. http://dx.doi.org/10.20914/2310-1202-2020-4-347-353.

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The article discusses the integration of additive technologies into production, presents the advantages and disadvantages of 3D metal printing. The data of the current indicators of the effectiveness of technological processes when using 3D equipment are analyzed, the difficulties of introducing additive technologies into production processes are determined. Conclusions on the trends and prospects of development of engineering solutions in the field of additive technologies are formulated. So, additive technologies provide an opportunity for a business entity to reduce production lines, minimize the production time for complex technological parts. In addition, the specifics of the operation process of parts - the result of high-tech production, provide both a long service life of component elements, and a high degree of reliability of materials, functional stability and structural strength, and, simplification of repair work (replacement of parts of parts), which generally determines the quality of manufactured products. This, in turn, determines, in economic realities, the development of economic and technological innovative engineering solutions through the promotion of additive technologies, increasing the economic indicators of the production activity of a business entity. The characteristic features of 3D printing of metals studied in this article make it possible to highlight the defining technological processes of the principles of printing, constructively represent the properties of additive structures. It can be stated that in the current period of development of economic and technological innovative engineering solutions, the field of promoting additive technologies has significant achievements and prospects. Small-scale production is gradually being introduced into additive manufacturing, which has distinctive characteristics for the mechanical engineering industry. The introduction of such technological equipment provides an opportunity to speed up the manufacturing procedure, improve the properties of the product, despite the high cost (0.8-1.5 million euros). At the same time, from a strategic economic position in comparison with classical technologies, high-tech engineering solutions act as highly competitive.

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Dzakhmisheva, I. S. "Innovative technologies in merchandising." Proceedings of the Voronezh State University of Engineering Technologies 82, no. 4 (January 20, 2021): 272–76. http://dx.doi.org/10.20914/2310-1202-2020-4-272-276.

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The article summarizes and systematizes modern high-tech digital tools that allow modeling the behavior of a modern consumer and ensuring the efficiency of the functioning of trade enterprises by increasing sales. It has been established that merchandising has an impressive arsenal of high-tech tools, which include: projection showcase, interactive showcase, virtual shelf, 3D showcase, Aislelabs and Prism Skylabs devices, mobile applications, Fetch Robotics and Lowe's robots, ERP system, Amazon Prime Air system, etc. A projection showcase is a showcase glass (screen) covered with a special film (opaque, translucent or completely transparent) of rear projection. A projector is installed behind the screen, which transmits an image to the screen, which is clearly visible from the outside. An interactive showcase (interactive wall, touch showcase) is a video screen that interacts with a person; most often, they use multitouch technology (touch showcases) and contactless sensor technology (Kinect showcases). A virtual shelf is an LCD panel or video wall, with a Kinect system attached to the back, which “reads” human movements and allows you to control the system from a distance. The 3D showcase is an electronic counter with technology that allows 3D images to be literally projected in the air, combined with motion sensors. The motion sensor allows the showcase to react to the trajectory of passers-by, that is, the showcase is static as long as no one walks past it, and as soon as the sensors detect the movement of a person in the reach, the showcase comes to life, the colors, lighting, picture change. Digital technologies in retail are a new interactive advertising tool for attracting and retaining customer attention. Due to the effect of surprise inherent in all interactive solutions in advertising, virtual showcases (interactive walls) attract attention, keep the visitor for a long time, stimulate to make a purchase or receive information.

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Sukhorukov, Sergei, Sergey Cherniy, Alina Buzikaeva, and Anton Ovsyannikov. "The Control System of the Wire Feed and Positioning Module for a Robotic Complex for Metal Products 3D Printing." Известия высших учебных заведений. Электромеханика 65, no. 3 (2022): 66–73. http://dx.doi.org/10.17213/0136-3360-2022-3-56-63.

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. The article presents a control system for the wire feed and positioning module for solving the problem of three-dimensional metal printing within a robotic technological complex. Based on the analysis of 3D metal printing tech-nologies, an implementation technique within the framework of a robotic complex has been chosen and technological requirements for a wire feed and positioning module have been formulated. The structure of the module control system being proposed. Algorithms for the control system operation have been developed, including a mathematical model for calculating the parameters of the required displacements.

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Chen, Weiyuan, and Yanjie Huang. "Advanced three-dimensional graphene-based piezoresistive sensors in wearable devices." Journal of Physics: Conference Series 2174, no. 1 (January 1, 2022): 012019. http://dx.doi.org/10.1088/1742-6596/2174/1/012019.

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Abstract The piezoresistive pressure sensor made with a three-dimensional (3D) structure as the core material is considered a potential precision sensor for wearable devices because of its unique advantages of simple preparation principle, low power consumption, stable performance and high signal acquisition efficiency. It has attracted the attention of many scientific researchers who are committed to realizing the high intelligence and informatization of personal devices. After the rapid development in the 21st century, this technology has made many breakthroughs and showed strong application potential in high-tech fields such as human motion detection, health monitoring and electronic skin. However, this technology is still a long way from full commercial mass production. This paper introduces the unique advantages of the 3D graphene-based piezoresistive sensor in intelligent wearable devices, summarizes several production methods and applications of this 3D graphene-based piezoresistive sensor, explores the future development trend and application prospect of this technology, and discusses the challenges and prospects of piezoresistive pressure sensor based on three-dimensional graphene.

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Shi, Liang, Xiaoning Song, Tao Zhang, and Yuquan Zhu. "Histogram-Based CRC for 3D-Aided Pose-Invariant Face Recognition." Sensors 19, no. 4 (February 13, 2019): 759. http://dx.doi.org/10.3390/s19040759.

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Traditional Collaborative Representation-based Classification algorithms for face recognition (CRC) usually suffer from data uncertainty, especially if it includes various poses and illuminations. To address this issue, in this paper, we design a new CRC method using histogram statistical measurement (H-CRC) combined with a 3D morphable model (3DMM) for pose-invariant face classification. First, we fit a 3DMM to raw images in the dictionary to reconstruct the 3D shapes and textures. The fitting results are used to render numerous virtual samples of 2D images that are frontalized from arbitrary poses. In contrast to other distance-based evaluation algorithms for collaborative (or sparse) representation-based methods, the histogram information of all the generated 2D face images is subsequently exploited. Second, we use a histogram-based metric learning to evaluate the most similar neighbours of the test sample, which aims to obtain ideal result for pose-invariant face recognition using the designed histogram-based 3DMM model and online pruning strategy, forming a unified 3D-aided CRC framework. The proposed method achieves desirable classification results that are conducted on a set of well-known face databases, including ORL, Georgia Tech, FERET, FRGC, PIE and LFW.

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Patel, Ruchir, Tejal Sheth, Shilpi Shah, and Mihir Shah. "A New Leap in Periodontics: Three-dimensional (3D) Printing." Journal of Advanced Oral Research 8, no. 1-2 (May 2017): 1–7. http://dx.doi.org/10.1177/2229411217729102.

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Dentistry is truly a great profession and recently it is coming to the terms of use of technology and tech-savvy dentists, who nowadays use smart devices to make their life easier. Researchers are constantly innovating to integrate techno-logy into dentistry. Of all the latest technological innovations in dentistry, the most talked about innovations are three-dimensional (3D) printing and cone beam computed tomography (CBCT), which have made the treatment planning and execution a whole lot easier. Three-dimensional printing like CBCT has been gaining much popularity in the masses. Three-dimensional printing technologies are evolving rapidly in the recent years and can be used with a wide array of different materials. In addition to rapid prototyping, the dominant use in the past, they are now being used in all manner of manufacturing applications in a diversity of industries such as sports goods, fashion items such as jewelry and necklaces to aerospace components, tools for automobile industry, and medical implants also in dentistry for producing models, making scaffolds, etc. In future, 3D printing has ability to change the way many products are manufactured and produced and bring an era of ‘personal manufacturing’. This article introduces 3D printing and gives little information about the technology behind the working of 3D printers. It also gives information about the applications of 3D printers and materials most often used for 3D printed scaffolds for periodontal regeneration.

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Gomes, Allan. "Fraud & Abuse: Fourth Circuit Holds Eleventh Amendment Bars Qui Tam Suit Against State in Federal Court." Journal of Law, Medicine & Ethics 27, no. 2 (June 1999): 201–2. http://dx.doi.org/10.1017/s107311050001295x.

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The U.S. Court of Appeals for the Fifth Circuit ruled, in United States u. Texus Tech University, 171 F.3d 279 (5th Cir. 1999), that the Eleventh Amendment bars a private citizen from bringing a qui tam action in federal court against a state, absent federal intervention.Intervenor Carol Foulds was a dermatology resident at the Texas Tech Health Services Center. While a resident, Foulds examined patients, made diagnoses, and prescribed treatments for patients. Foulds alleged that she and other residents performed these medical services without the supervision of staff physicians. Foulds further alleged that, after residents performed these services without physician oversight, staff physicians signed charts and Medicare and Medicaid billing forms certifying that they personally performed or supervised the administration of these services. Foulds estimates approximately 500,000 false claims occurred in a span of ten years.In 1995, Foulds filed a qui tam action with the U.S. District Court for the Northern District of Texas. As regulated by the False Claims Act (FCA), 31 U.S.C. § 3729(b)(2) (West 1998), the complaint remained under seal.

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Voicu, Adrian Cătălin, and Gheorghe Ion Gheorghe. "Adaptable High-Tech Mechatronic Equipment with Laser Scanning for Multicontrol 3D of Complex Components from Automotive Industry." Applied Mechanics and Materials 772 (July 2015): 293–98. http://dx.doi.org/10.4028/www.scientific.net/amm.772.293.

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Progressive replacement of traditional tools with intelligent technological equipment becoming more complex is one of the most important aspects of the development of production processes in all industrial fields. Intelligent measurement and integrated dimensional control are needed to ensure the quality of the product or industrial manufacturing process, whatever the field. Because the automotive industry is one of the most important industries in the world, manufacturing systems engineering, control methods and techniques, and assurance of quality, present particular interest by the economic results, in particular the reduction of working time and production costs. In a perfect world or in an integrated production environment, the new 3D measurement systems, by providing the quality control integrated into the production line would be able to measure all the necessary parameters in a single step, without errors and render the results in the same way to the manufacturing networks with computers, in formats useful for CNC machines control and process management.

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KADOTA, Kazuo. "S201026 The Educational Practice using 3D printers in the Tokyo Tech High School of Science and Technology." Proceedings of Mechanical Engineering Congress, Japan 2013 (2013): _S201026–1—_S201026–2. http://dx.doi.org/10.1299/jsmemecj.2013._s201026-1.

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Vazquez-Duchêne, M. D., P. Kraemer, N. Saugnier, B. Levy, S. Mine, C. Jeanmaire, O. Freis, G. Pauly, and A. Rathjens. "SkinExplorerTM: a new high-tech platform to interact inside the skin by immersive virtual 3D cutaneous environment." Skin Research and Technology 19, no. 1 (January 24, 2012): e1-e12. http://dx.doi.org/10.1111/j.1600-0846.2011.00599.x.

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Tibola, Leandro Rosniak, Carlos Eduardo Pereira, and Liane Margarida Rockenbach Tarouco. "Improving Performance to Engineering Students through Virtual Labs and its Monitoring in Cockpit." International Journal of Engineering Pedagogy (iJEP) 4, no. 4 (October 5, 2014): 43. http://dx.doi.org/10.3991/ijep.v4i4.3957.

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Modern education needs use all resources to improve teaching-learning process. To achieve this goal, technology can be a sharp allied. Especially to the engineering education, which seeks the balance among theoretical and practice lessons. Thus, many universities are using the virtual labs and virtual worlds 3D like way to support the student's learning and enrich the teaching methods. High tech classes, broadband communication, mobility and ubiquity aren't enough if the student's engagement can't be measured. This work presents a proposal to monitor the virtual lab use by students, showing the educational parameters in a graphical interface, following the suitable pedagogical concepts.

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HUSIEV, O. V., and T. D. NIKIFOROVA. "RESEARCH OF THE CONVERTING STAGES FOR THE VOLUME MODEL OF THE PRODUCT INTO THE CONTROL CODE FOR A 3D PRINTER IN THE CONTEXT OF AUTOMATED CONSTRUCTION OF 3D PRINTING TECHNOLOGY." Ukrainian Journal of Civil Engineering and Architecture, no. 4 (October 22, 2022): 38–45. http://dx.doi.org/10.30838/j.bpsacea.2312.250822.38.876.

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Problem statement. The integration of the latest technologies in the field of software at the stages of construction appears as one of the main tasks for designers. Creating objects based on 3D printing technology requires the use of appropriate high-tech solutions. One of these solutions is the analysis of the converting process a three-dimensional model into a control code for 3D printing − it is precisely from this analysis that the degree of construction efficiency for building structures by the 3D printing method depends. The purpose of the article. Based on the analysis of 3D printing concepts and modern software, form a conceptual diagram of the converting stages for the product three-dimensional model into a control code for 3D printers. Determine shortcomings that can complicate the implementation of this process. Conclusions. The working process of 3D printing is complex and requires in-depth knowledge of both the software and hardware of the system as a whole. A detailed study of this issue will further optimize the planning of construction processes, which in turn plays an important role in the overall efficiency of the 3D printing system. The use of 3D computer graphics programs may not include models’ specific features that will be key importance for 3D printing. Surface tessellation done in CAD for modeling often ends up with errors in the *.STL data structure in the form of gaps and holes, resulting in open loops in cross-sections that cannot be fabricated as layers in practice. When converting 3D models to *.STL format automatically, with the help of specialized software packages, you should take the time to thoroughly check the STL format. G-code is the first step towards understanding the digital software control of a 3D printer. It can be generated automatically, which can lead to a large number of errors. At the converting stage of the 3D model into *.STL format and in the direct process of G-code generation, highly qualified interdisciplinary specialists who are able to combine these technologies in practice.

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Despotovic, M., Milun Babic, D. Milovanovic, and Vanja Sustersic. "Numerical simulation of complex 3D compressible viscous flows through rotating blade passage." Theoretical and Applied Mechanics, no. 30 (2003): 55–82. http://dx.doi.org/10.2298/tam0301055d.

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This paper describes a three-dimensional compressible Navier-Stokes code, which has been developed for analysis of turbocompressor blade rows and other internal flows. Despite numerous numerical techniques and statement that Computational Fluid Dynamics has reached state of the art, issues related to successful simulations represent valuable database of how particular tech?nique behave for a specifie problem. This paper deals with rapid numerical method accurate enough to be used as a design tool. The mathematical model is based on System of Favre averaged Navier-Stokes equations that are written in relative frame of reference, which rotates with constant angular velocity around axis of rotation. The governing equations are solved using finite vol?ume method applied on structured grids. The numerical procedure is based on the explicit multistage Runge-Kutta scheme that is coupled with modem numerical procedures for convergence acceleration. To demonstrate the accuracy of the described numer?ical method developed software is applied to numerical analysis of flow through impeller of axial turbocompressor, and obtained results are compared with available experimental data.

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Zhan, K., D. Fritsch, and J. F. Wagner. "INTEGRATION OF PHOTOGRAMMETRY, COMPUTED TOMOGRAPHY AND ENDOSCOPY FOR GYROSCOPE 3D DIGITIZATION." International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLVI-M-1-2021 (August 28, 2021): 925–31. http://dx.doi.org/10.5194/isprs-archives-xlvi-m-1-2021-925-2021.

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Abstract. Cultural heritage preservation via 3D digitization is becoming more and more important. Besides conventional buildings and landmarks, many technical instruments and artifacts, which belong to tech heritage (TH), are also of great importance, historically and didactically. Gyroscopes, which can be dated back for 200 years, are fascinating instruments with complex structures and different working principles. With such properties, any 3D digitization of Gyroscopes could not be realized by simply using conventional solutions of photogrammetry or laser scanning. In our work, we introduce photogrammetry, endoscopy and computed tomography (CT) for an integrated 3D digitization solution. Though photogrammetry has been widely used for the purpose of cultural heritage preservation, 3D reconstructions using the other two sensor systems have their own challenges. For an endoscope, a pre-calibration solution has been put forward and the Structure-from-Motion (SfM) process has been optimized to deal with the drift caused by a long imaging trajectory. Regarding the CT 3D reconstruction, we mainly focus on the 3D representation’s completeness and the denoising process. In the section of data integration, we designed different methods according to the characteristics of the objects as well as the 3D models from different sonsors. In case of limited overlap between the pair of point clouds, the Gauss-Helmert model with manually picked control points is applied for the estimation of the transformation matrix. CT point clouds, which hold only the intensity values representing the material attenuation, could be integrated with photogrammetry data via a surface color mapping method using the photogrammetric images or the primitive based corresponding virtual control points. Through our research, the concept of integrating photogrammetry, endoscopy and CT for 3D digitization of Gyroscopes is validated. Furthermore, advantages and disadvantages involved in the complete process are discussed and a solid foundation has been laid for further research.

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Evlashkina, S. A. "THE ECONOMIC IMPACT OF THE INTRODUCTION OF DIGITAL TECHNOLOGIES IN THE MINING INDUSTRY." Business Strategies 9, no. 10 (October 18, 2021): 296–300. http://dx.doi.org/10.17747/2311-7184-2021-10-296-300.

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This article discusses the implementation of digital technologies in the mining industry, as well as the economic effect of their implementation. The advantages of using 3D models, “smart ear” systems, “Blast movement technology” are substantiated. It was determined that Industry 4.0 opens up new prospects for the development of the mining industry, creating opportunities for productivity growth with improved labor safety. Thanks to the introduction of geotechnology - Mining 4.0 (Industry 4.0 in the mining industry), including such modern digital technologies as deserted robotic complexes of mining and quarry equipment, ubiquitous digital telemetry, the Internet of Things and machine-to-machine communications, digital 3D modeling and artificial intelligence in the mining industry becomes a high-tech production. The author analyzed the forms of penetration of Industry 4.0 technologies into the mining industries and the international experience of using Mining 4.0, showing the advantages of the further development of geotechnology in a new technological era and the economic effect of their use.

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Snetkov, Alexandr A., Dmitriy V. Khaspekov, Andrei I. Snetkov, and Gennadiy N. Machak. "Endoprosthesis replacement of the sternum handle in G<sub>1</sub> chondrosarcoma: clinical case." N.N. Priorov Journal of Traumatology and Orthopedics 29, no. 2 (December 29, 2022): 151–59. http://dx.doi.org/10.17816/vto109447.

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BACKGROUND: Malignant neoplasms with lesions of the chest are quite rare in the sternum and range from 0.5 to 3.1% of the total number of patients with bone tumors of all localizations. In this connection, there are few publications describing the tactics of surgical treatment and methods of prosthetics of the formed defect. The present article describes a clinical case of successful application of an individual prosthesis of the manubrium of the sternum in G1 chondrosarcoma. CLINICAL CASE DESCRIPTION: to present a clinical observation of the surgical treatment of an 18-year-old patient with G1 chondrosarcoma of the manubrium of the sternum, with individual prosthetics. CONCLUSION: The use of modern 3D technologies based on the results of CT modeling allows, not only to plan the volume of necessary bone resection, but also to manufacture high-tech prostheses by using 3D printing to replace the defect with planning sufficient support capacity and function.

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Haghdel, Mobin, Ali Akbar Alizadeh, Younes Ghasemi, Hamidreza Hosseinpour, Hamidreza Foroutan, Sepehr Shahriarirad, Mohammad Hossein Anbardar, Seyed Mohsen Dehghani, and Mohammad Hadi Imanieh. "Utilization of 3D-printed polymer stents for benign esophageal strictures in patients with caustic ingestion." Journal of 3D Printing in Medicine 5, no. 1 (March 2021): 11–21. http://dx.doi.org/10.2217/3dp-2020-0023.

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Aim: This study aimed to introduce a 3D printed, flexible esophageal stent, which is useful in personalized treatment of patients with esophageal strictures and also reduce the adverse effects of the existing esophageal stent. Materials & methods: Bio-grade polylactic acid (PLA), bio-grade transparent thermoplastic polyurethane and bio-grade polyvinyl alcohol (PVA) granules were purchased. The dichloromethane (DCM) and dimethylformamide (DMF), and the double distilled water were used as the solvent for PLA, thermoplastic polyurethane and PVA, respectively. The stent was designed by Solidworks software and subsequently printed by a 3D bioprinter (Mobio Tech V1.2). The biocompatibility, self-expansion, anti-inflammation and cytotoxicity of the printed stent were assessed in an in vitro and in vivo normal canine esophagus. An individualized 3D-printed flexible polymer stent was also implemented for a 16-year-old boy who presented with esophageal stricture following ingestion of corrosive chemicals. The patient was followed for 2 months with further endoscopic and pathology evaluations. Results: Several tests were performed before and after the stent placement. Mechanical tests showed that the nature and behavior of the polymeric materials used in the esophagus stent did not change significantly along treatment. Pathology results further indicated that the polymer stent did not have major inflammatory effects and cytotoxicity. Conclusion: The results show that the individualized 3D printed Biocompatible polymeric stent has potential applications in treating esophageal strictures.

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McCoy, Andrew P., Mani Golparvar-Fard, and Ellen T. Rigby. "Reducing Barriers to Remote Project Planning: Comparison of Low-Tech Site Capture Approaches and Image-Based 3D Reconstruction." Journal of Architectural Engineering 20, no. 1 (March 2014): 05013002. http://dx.doi.org/10.1061/(asce)ae.1943-5568.0000118.

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Мозговенко, А. А., and О. Г. Зінов’єва. "АНАЛІЗ МЕТОДІВ КОМП’ЮТЕРНОГО ЗОРУ В ЗАДАЧАХ ІДЕНТИФІКАЦІЇ ОСІБ У ВІДЕОПОТОЦІ." Таврійський науковий вісник. Серія: Технічні науки, no. 3 (July 29, 2022): 56–62. http://dx.doi.org/10.32851/tnv-tech.2022.3.6.

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Завдання виявлення обличчя на зображенні часто є першим кроком у процесі розв’язання задачі вищого рівня – розпізнавання особи, деталей особи або її міміки. Крім того, інформація про присутність та кількість осіб на зображенні може бути корисною в системах автоматичного обліку кількості відвідувачів; системах пропускного контролю в установах, аеропортах та метро; автоматичних системах запобігання нещасним випадкам; інтелектуальних інтерфейсах «людина-комп’ютер»; у фототехніці для автоматичного фокусування на обличчі людини, а також для стабілізації зображення особи з метою полегшення розпізнавання емоцій; для розширення зони стереобачення під час створення систем 3D відображення. Те, що для нас є фотографією, для системи розпізнавання образів – лише набір пікселів з різними параметрами кольору. Щоб навчити систему розпізнавати на зображенні окремі об’єкти, необхідно надати їй датасета – набір з тисяч зображень, в яких зазначено, де саме знаходиться потрібний об’єкт. Наприклад, якщо ми хочемо, щоб система навчилася розпізнавати на знімках людей, потрібно показати їй безліч фотографій людей різного віку, в різних позах і одязі, в різних умовах. Після подібного тренування система зможе безпомилково розпізнати людину на фотографіях. Однак напрошується інше запитання: якщо для системи фотографія – це просто сукупність пікселів, то як же нейросеть розуміє, що саме зображено на фото? Значне зростання обчислювальної потужності комп’ютерів та поява нових математичних моделей алгоритмів останніми роками дозволило домогтися начительного прогресу у сфері комп’ютерного зору. Нові технології, засновані на машинному навчанні, дозволяють створювати надійні рішення для складних адач розпознавальних образів. Дана стаття є оглядом основних підходів до вирішення завдань комп’ютерного зору, з акцентом на глибинне машинне навчання та штучні нейронні мережі. У статті розглянуто алгоритми розпізнавання об’єктів на зображенні, проведено аналіз методів, що застосовуються при обробці зображень, а також описано використання засобів машинного навчання в рамках роботи із зображеннями.

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Alam, Md Shoaib, Ayesha Akhtar, Iftikhar Ahsan, and Sheikh Shafiq-un-Nabi. "Pharmaceutical Product Development Exploiting 3D Printing Technology: Conventional to Novel Drug Delivery System." Current Pharmaceutical Design 24, no. 42 (March 20, 2019): 5029–38. http://dx.doi.org/10.2174/1381612825666190206195808.

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Abstract:

Background: 3D printed pharmaceutical products are revolutionizing the pharmaceutical industry as a prospective mean to achieve a personalized method of treatments acquired to the specially designed need of each patient. It will depend upon age, weight, concomitants, pharmacogenetics and pharmacokinetic profile of the patient and thus transforming the current pharmaceutical market as a potential alternative to conventional medicine. 3D printing technology is getting more consideration in new medicine formulation development as a modern and better alternative to control many challenges associated with conventional medicinal products. There are many advantages of 3D printed medicines which create tremendous opportunities for improving the acceptance, accuracy and effectiveness of these medicines. In 2015, United State Food and Drug Administration has approved the first 3D printed tablet (Spritam®) and had shown the emerging importance of this technology. Methods: This review article summarizes as how in-depth knowledge of drugs and their manufacturing processes can assist to manage different strategies for various 3D printing methods. The principal goal of this review is to provide a brief introduction about the present techniques employed in tech -medicine evolution from conventional to a novel drug delivery system. Results: It is evidenced that through its unparalleled advantages of high-throughput, versatility, automation, precise spatial control and fabrication of hierarchical structures, the implementation of 3D printing for the expansion and delivery of controlled drugs acts as a pivotal role. Conclusion: 3D printing technology has an extraordinary ability to provide elasticity in the manufacturing and designing of composite products that can be utilized in programmable and personalized medicine. Personalized medicine helps in improving drug safety and minimizes side effects such as toxicity to individual human being which is associated with unsuitable drug dose.

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Kuramochi, Takaho, Masaru Kawakami, Ajit Khosla, Yosuke Watanabe, Jun Ogawa, Nahin Islam Shiblee, and Hidemitsu Furukawa. "(Digital Presentation) Developing Meat Alternatives with Screw-Based 3D Food Printing." ECS Meeting Abstracts MA2022-01, no. 57 (July 7, 2022): 2371. http://dx.doi.org/10.1149/ma2022-01572371mtgabs.

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Food 3D printers are next generation devices that can fabricate food products with complex internal structures and external shapes, and are expected to be used as devices for producing food products with shapes and textures that meet people's preferences, but also provide requirement of seven essential factors for a balanced diet: carbs, protein, fat, fiber, vitamins, minerals, and water [1, 2]. The food 3D printer can handle two types of food at the same time, and since it can form food in two colors, it can make food that cannot be made with a syringe nozzle. On the other hand, there are concerns about the shortage of protein supply due to the increase in population, and alternative meats that are not derived from livestock are attracting attention [3]. Currently, there are few reports of research on alternative meats using food 3D printers, and in particular, 3D modeling of alternative meat that reproduces the texture of actual meat has not been done much. In this study, we have developed a food 3D printer technology that enables the modeling of alternative meat that reproduces the texture of actual meat. We have investigated the composition of alternative meat materials suitable for 3D printing based on soy protein, and the material properties of the dough using a rheometer. In future, we will report on the movement and layering during the 3D food printing process. References: [1] Shunsuke Suzuki, Masaru Kawakami, Hidemitsu Furukawa, ”Food proreties suitable for 3D printer and effect on printing precsion” Materials and processing conference, 2018 [2] Suzuki, Shunsuke, Jun Ogawa, Yosuke Watanabe, MD Nahin Islam Shiblee, Ajit Khosla, Masaru Kawakami, Jun Nango, and Hidemitsu Furukawa. "Texture Control of 3D Printing: Effect of Internal Structure of 3D Printed Foods on their Fracture Process in Compression." ECS Transactions 98, no. 13 (2020): 59. [3] Kodama, Mai, Ryo Ishigaki, Samiul Basher, Hiroyuki Sasaki, Azusa Saito, Masato Makino, Ajit Khosla, Masaru Kawakami, and Hidemitsu Furukawa. "3D printing of foods." In Nano-, Bio-, Info-Tech Sensors, and 3D Systems II, vol. 10597, p. 1059718. International Society for Optics and Photonics, 2018.

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Journal articles on the topic '3D tech'

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