articles+ search results

subtractive rapid prototyping, additive rapid prototyping, rapid prototyping process selection, analytic hierarchy process, multi-criteria decision analysis, Industrial engineering. Management engineering, and T55.4-60.8

The present research addresses a comparative analysis among Additive (ARP) and Subtractive (SRP) rapid prototyping techniques, aiming to determine which approach presents greater technical and economic viability for physical prototype manufacturing. The Analytic Hierarchy Process (AHP) multi-criteria decision method was used to categorize and quantify the analysis criteria. The analyzed Rapid Prototyping (RP) techniques were the Computer Numerical Control (CNC) milling as SRP technique and the Fused Deposition Modeling (FDM) process as ARP. The SRP rapid prototyping technique is the most suitable alternative for manufacturing prototypes, according to the analyzed evaluation criteria.

Autotransplantation, Rapid prototyping, Root canal treatment, Dentistry, and RK1-715

Abstract Background Autotransplantation is a beneficial treatment with a high success rate for young patients. However, most adult patients require root canal treatment (RCT) of the donor teeth after the autotransplantation procedure, which causes a prolonged treatment time and additional expenses and increases the rate of future tooth fracture. Rapid prototyping (RP)-assisted autotransplantation shortens the extra-alveolar time and enables a superior clinical outcome. However, no cohort studies of the application of this method on adult populations have been reported. Methods This study is a retrospective cohort study. All patients underwent autotransplantation from 2012 to 2020 in the Kaohsiung and Chia-Yi branches of Chang Gung Memorial Hospital, and the procedure and clinical outcomes were analysed. Differences in clinical outcomes, age, sex, extra-alveolar time, fixation method, and RCT rate were compared between the two groups. Results We enrolled 21 patients, 13 treated using the conventional method and 8 treated using the RP-based technique. The RCT rates of the conventional group and RP group were 92.3% and 59%, respectively. The mean age of the two groups was significantly different (28.8 ± 10 vs. 21.6 ± 2.1); after performing subgroup analysis by excluding all of the patients aged > 40 years, we found that the RCT rates were still significantly different (91.0% vs. 50%). The mean extra-alveolar time was 43 s in the RP group, and the autotransplantation survival rate in both groups was 100%. Conclusions Rapid prototyping-assisted autotransplantation was successfully adopted for all patients in our study population. By shortening the extra-alveolar time, only 50% of the patients required a root canal treatment with a 100% autotransplantation survival rate. Trial Registration : Retrospectively registered.

virtual factory, digital twin, virtual prototyping, virtual reality, simulation and modeling, industry 4.0, Information technology, and T58.5-58.64

Shortening lifecycles and increasing complexity make product and production lifecycle processes more challenging than ever for manufacturing enterprises. Virtual Prototyping (VP) technologies promise a viable solution to handle such challenges in reducing time and physical builds as well as increasing quality. In previous studies, the Digital Twin (DT) based Virtual Factory (VF) concept showed significant potential to handle co-evolution by integrating 3D factory and product models with immersive and interactive 3D Virtual Reality (VR) simulation technology as well as real-time bidirectional data synchronisation between virtual and physical production systems. In this article, we present an extension to the paper “Demonstrating and Evaluating the Digital Twin Based Virtual Factory for Virtual Prototyping” presented at CARV2021. The study presents an evaluation by industry experts of the DT based VF concept for VP in the context of New Product Introduction (NPI) processes. The concept is demonstrated in two cases: wind turbine blade manufacturing and nacelle assembly operations at Vestas Wind Systems A/S. The study shows that the VF provides an immersive virtual environment, which allows the users to reduce the time needed for prototyping. The industry experts propose several business cases for the introduced solution and find that the phases that would have the most gain are the later ones (production) where the product design is more mature.

engineering, application, archiving, prototyping, Electrical engineering. Electronics. Nuclear engineering, TK1-9971, Electronic computers. Computer science, and QA75.5-76.95

National Land Agency received requests for land rights every day. The letters can be submitted through two stages of acceptance and archiving. Still using conventional systems makes data retrieval requires relatively more time. This research aims to design and build an information system data archiving for incoming request at the National Land Agency. The software has been designed with login feature, data management land owners and land owner data search and print feature data. Analysis of system requirements using object-oriented method which uses the use-case diagram in order to illustrate the functionality of the system and some of the criteria of non-functional requirements are also outlined. The next step was the coding implementation and evaluation of the system built. The system development method used was the prototyping method. The selection of this method was intended, therefore the client can get a clear picture of the system being built. Evaluation was conducted in the developer and the user environment. The evaluation in the user environment was done by distributing questionnaires covering three parameters namely the usefulness of the application, ease of use and user satisfaction. The results showed that the information systems built have a useful value (85.7%) and are easy to use (100%), therefore it satisfied the users.

wearable device, exoskeleton, differential mechanism, prototyping, rehabilitation, Mechanical engineering and machinery, TJ1-1570, Electronic computers. Computer science, and QA75.5-76.95

Exoskeletons and more in general wearable mechatronic devices represent a promising opportunity for rehabilitation and assistance to people presenting with temporary and/or permanent diseases. However, there are still some limits in the diffusion of robotic technologies for neuro-rehabilitation, notwithstanding their technological developments and evidence of clinical effectiveness. One of the main bottlenecks that constrain the complexity, weight, and costs of exoskeletons is represented by the actuators. This problem is particularly evident in devices designed for the upper limb, and in particular for the hand, in which dimension limits and kinematics complexity are particularly challenging. This study presents the design and prototyping of a hand finger exoskeleton. In particular, we focus on the design of a gear-based differential mechanism aimed at coupling the motion of two adjacent fingers and limiting the complexity and costs of the system. The exoskeleton is able to actuate the flexion/extension motion of the fingers and apply bidirectional forces, that is, it is able to both open and close the fingers. The kinematic structure of the finger actuation system has the peculiarity to present three DoFs when the exoskeleton is not worn and one DoF when it is worn, allowing better adaptability and higher wearability. The design of the gear-based differential is inspired by the mechanism widely used in the automotive field; it allows actuating two fingers with one actuator only, keeping their movements independent.

website e-commerce, metode prototyping, kedai kopi kontekstual, Mathematics, QA1-939, Electronic computers. Computer science, and QA75.5-76.95

Bisnis kedai kopi telah mengalami kemajuan yang sangat pesat. Adanya trend nongkrong membuat bisnis kedai kopi meningkatkan pelayanan untuk kepuasan pelanggan. Kualitas pelayanan, produk, dan pengalaman pemasaran memiliki dampak penting dalam memenuhi kepuasan konsumen. Kedai Kopi Kontekstual merupakan kedai kopi yang berlokasi di Banyumas. Kedai Kopi Kontekstual masih dalam proses bertumbuh dan berkembang. Asset yang dimiliki Kedai Kopi Kontekstual cukup besar yaitu kebun kopi, mesin roasting, dan SDM. Melalui asset tersebut pemilik berharap dapat menjangkau pasar nasional. Kondisi pasar yang terbatas membuat Kedai Kopi Kontekstual perlu melakukan upaya jaringan pemasaran yang lebih luas. Sebagai upaya pengembangan pasar Kedai Kopi Kontekstual membutuhkan fasilitasi sistem dalam yang mampu mengakomodasikan penjualan dan sistem transaksi. Metode prototyping merupakan salah satu pendekatan dalam rekayasa perangkat lunak yang mendemonstrasikan bagaimana mengembangkan sistem secara sederhana, memberikan akses kepada pengguna konsep dasar sistem serta pengujian. UML digunakan sebagai rancangan gambaran sistem secara keseluruhan, website berbasis online menggunakan bahasa pemrograman visual studio code, javascript (framework ReactJS), Node Js dan database MySQL. Tujuan dari perancangan website adalah memperluas jangkauan pemasaran, brandawareness, dan meningkatkan pengetahuan calon pelanggan terhadap Kedai Kopi Kontekstual. Hasil dari penelitian ini adalah berhasil membuat rancangan website yang sesuai dengan kebutuhan Kedai Kopi Kontekstual.

rapid prototyping, additive manufacturing, microfluidic systems, lab-on-a-chip, plant-on-a-chip, and Medicine

To shorten the production time for PDMS-moulds by additive manufacturing (AM) several 3D printers have been investigated in comparison to standard micro-milling by producing benchmark structures. These are evaluated regarding their shape accuracy, the transparency of the casted PDMS which is linked to the surface quality of the mould, and the production time until the moulds are ready to use. Even though the additively manufactured moulds showed significantly better surface quality and shorter production time, the necessary shape accuracy for non-square-structures or structures with < 250 μm edge length could not be achieved due to limiting factors like nozzle diameter, size of the digital micromirror device or spot size of the LCD-panel.

Solar still, Distillation, Prototyping, Freshwater, and Technology

Floating solar still is a suitable technology for remote or rural coastal area applications. The device should be made of low-cost materials available locally to provide more access to the broader community. However, the low-cost materials usually do not have the best physical properties, decreasing the overall solar still performance. This work demonstrated a low-cost floating solar still prototype entirely made of locally available materials. To further understand the influence of different parameters on the solar still performance and guide the prototyping process, we also performed the system's heat and mass transfer analysis. Our experimental results indicate a high absorber temperature (59.5 °C), even on a cloudy day. Our model also fits the temperature measurement reasonably. However, the recorded overall efficiency still suffers mainly due to the collection system, which decreases the overall performance; an example of a practical challenge, which is often overlooked but plays a crucial role in increasing the readiness level of the prototype.

3d printing, multilayer printed circuit boards, prototyping, ldm, additive technology, 3d printer electronics, nano inks, Information theory, and Q350-390

A new direction in 3D printing was investigated – prototyping of single-sided, double-sided and multilayer printed circuit boards. The current capabilities and limitations of 3D printed circuit board printing technology were identified. A comparative analysis of the characteristics of two desktop 3D printers presented in the industry for prototyping radio electronics, as well as the first professional machine DragonFly LDM 2020, which is a mini-factory for prototyping multilayer printed circuit boards, was carried out. The first practical experience of working and printing on DragonFly LDM 2020 supplied to the megalaboratory “3D prototyping and control of multilayer printed circuit boards” of the Institute of Radio Engineering and Telecommunication Systems MIREA – Russian Technological University is presented. The first samples of electronic boards printed on a 3D printer by the method of inkjet printing were obtained. An additive technology for the production of multilayer printed circuit boards is considered: printing with two printheads with conductive and dielectric nano-ink with two curing systems: an infrared sintering system for conductive ink and a UV curing system for dielectric ink. The LDM (Dragonfly Lights-out Digital Manufacturing) production method with the necessary maintenance is presented. The method allows the system to work roundthe-clock with minimal human intervention, significantly increasing the productivity of 3D printing and expanding the possibilities of prototyping. The materials used for 3D printing of multilayer printed circuit boards and their characteristics were investigated: dielectric acrylate nano-ink (Dielectric Ink 1092 – Dielectric UV Curable Acrylates Ink), conducting ink with silver nanoparticles (AgCite™ 90072 Silver Nanoparticle Conductive Ink). The research carried out allows us to compare the technological standards of printed electronics with traditional methods of manufacturing multilayer printed circuit boards for a number of parameters.

virtual prototyping, products design, virtual reality, augmented reality, mixed reality, Fine Arts, Architecture, and NA1-9428

At present, speed is a key factor in the design and development of industrial products, And In the light of modern technology, computer-based prototyping techniques have emerged in so-called advanced rapid prototyping as a solution to the modeling activity associated with design processes. But these technologies have disadvantages, such as the high cost of the models and the long time it takes for these models to be completed, The subject of the research came to the virtual prototyping as a modern technology through which the models associated with the design activity of industrial products, These models provide the speed required in light of the continuous evolution and changing requirements of the market, and also provide a low-cost solution suitable for adoption by major companies or small and medium-sized enterprises alike. The importance of these virtual models is evident when it comes to communicating as much information about design as possible with the simplest way and the lowest costs, Through these models can include everything related to the product of work theories and engineering drawings and three-dimensional models with physical properties that mimic the final product, Within the same application and this information induced by one of the images prepared on the computer programs, and thus we can share these models over the Internet and work on them remotely, which in turn contributes to shorten the time of the design process. The importance of research is to shed light on the role of virtual prototyping as one of the basic elements in the process of design and development of industrial products, as the research aims to activate the role of virtual modeling in the process of product design and development and to include them in the design process as one of the basic stages' because of its usefulness, The hypothesis is that if virtual prototyping techniques and new technologies can be utilized in the process of designing industrial products in a creative manner, this ensures that the cost of model design and testing processes is reduced, as well as the opportunity to develop products periodically without incurring many expenses related to the production of physical models. The deductive approach was used to achieve this.

fast-prototyping, ibm watson, iot, mqtt, node-red, raspberry pi, smart home, telegram, Computer software, and QA76.75-76.765

The Internet of Things has contributed to make smarter houses and buildings in the last decades. Different existing works already integrate IoT technologies in homes, but end-user needs continuously change and researchers must face this challenge in identifying platforms to fast prototype solutions satisfying these new needs. This paper presents a solution that demonstrates how well-known fast-prototyping technologies like Node-RED, IBM Watson, Telegram, Raspberry Pi 4, and secured MQTT can contribute to develop complex systems facing the challenge. The selected tools are used within a smart home context to support features inspired by people needs and allow users to: a) consult real time conditions (i.e., temperature, humidity, gas), b) remotely manage lights, c) save energy through a light management system based on user movements, d) remotely monitor the house through dedicated webcams, e) generate warning notifications in case of danger. Users can interact with the systems through a web Node-RED dashboard and a Telegram bot. Differently from existing works, the feasibility of the implemented system and the efficacy of the exploited platforms are demonstrated through a running scenario extracted from a consolidated study on user needs in smart homes. The performed experiment can facilitate the fast prototyping of new solutions.

ship integrated logistic support, rapid prototyping (rp), repair, quick removal and combination, nitrogen gas protection, Naval architecture. Shipbuilding. Marine engineering, and VM1-989

Objectives With the rapid development of naval equipment and its increasing use frequency and failure rate, the traditional repair mode has limitations. This paper puts forward a rapid prototyping manufacturing (RPM) and equipment design method used in ship maintenance support. Methods Based on the hardware, software, technology and materials, the integration technology of rapid prototyping equipment is researched according to the actual situation of the ship. The design method of quick removal and combination using the equipment movement mechanism is adopted, achieving rapid prototyping repair with nitrogen as the shielding gas. The key technologies and methods of rapid prototyping repair are then studied, including technology, shape coordination and control, and post-repair treatment. Results The results of this study show that mobile rapid prototyping repair equipment with quick removal and combination can help to settle the problems of the online repair of real ships; marine nitrogen can be used as the shielding gas, which is convenient and affordable; and the dust collection system module greatly reduces the pollution of equipment in prototyping repairing process. Conclusions The developed quick removal and combination equipment for prototyping repair, which helps to realize "repair in case of damage" for ships under on-site conditions, can help to meet the requirements of accompanying support for spare ship equipment parts under actual combat conditions.

FPGA, rapid prototyping, Simulink, HDL Coder, Xilinx Zynq, Zedboard, Electronics, and TK7800-8360

Many advanced power electronics control techniques present a steep computational load, demanding advanced controllers, such as FPGAs. However, FPGA development is a daunting and time-consuming task, inaccessible to most users. This paper proposes a complete methodology for prototyping power electronics with Xilinx Zynq-based boards using Matlab/Simulink and HDL Coder. Even though these tools are relatively well documented, and several works in the literature have used them, a methodology for developing power electronics systems with them has never been proposed. This paper aims to address that, by proposing a complete programming and design methodology for Zynq-based power electronics and discussing important drawbacks and hurdles in Simulink/HDL Coder development, as well as their possible solutions. In addition, techniques for the implementation of all required peripherals (ADCs, digital outputs, etc.), system protections, and real-time data acquisition on Zynq boards are presented. This methodology considerably reduces the development time and effort of power electronics solutions using Zynq-based boards. In addition, a demonstration Simulink model is provided with all proposed techniques and protections, for use with a readily available development board (Zedboard) and ADC modules. This should further reduce the learning curve and development effort of this type of solution, contributing to a broader access to high-performance control prototyping using Zynq-based platforms. An application example is presented to demonstrate the potential of the proposed workflow, using a Zedboard to control a multilevel UPS inverter prototype with Model Predictive Control.

Sensor, Thermocouple, Mutliphysics, CFD, Virtual prototyping, Engineering (General). Civil engineering (General), and TA1-2040

The study presents a successful approach used in development of new design of thermal product. The high uncertainty of dynamic thermofluid process analysis and the need of fast exploration of large dataset of design parameters require elaboration of this new approach. It combines detailed thermoCFD simulation models that are validated with physical experiments, with simplified thermostructural simulation models. The need for such an approach is predetermined by the request for fast processing of big data with certain level of accuracy and detail. The approach is demonstrated by a case study of resistance temperature detector design development.

Acetabular defects, Hip arthroplasty, Rapid prototyping, Revision, Surgical procedure design, Orthopedic surgery, and RD701-811

Objective To compare rapid prototyping technology (RP tech) in revision total hip arthroplasty (RTHA) with traditional examination methods and to see how they are different in evaluating acetabular anatomy and designing surgical procedure. Methods From February 2014 to March 2018, 43 RTHA patients with complex acetabulum defects were enrolled in this prospective study regardless of age or gender. Incomplete and unclear data were excluded. Three types of radiographic examination were performed on each patient before the revision surgery. Four groups of evaluations were designed: (i) X‐ray; (ii) computed tomography (CT‐scan); (iii) RP tech; and (iv) CT‐aided RP tech. Discrepancies between preoperative radiographic analysis and intra‐operative findings were separately compared by a team of surgeons. Premade surgical plans based on each evaluation method were compared with the final surgical procedure. The compliance of anatomic evaluation and surgical plan‐design based on 3D RP tech and traditional radiographs were ranked manually by a of team surgeons into: (i) complete accordance; (ii) general accordance; and (iii) undetermined structure/procedure. The difference in ranks between RP tech and traditional radiographic methods were analyzed with a nonparametric Kruskal‐Wallis test. P

Internet of Things, remote prototyping, FPGA devices, undergraduate teaching, digital design and synthesis lab, COVID-19 lockdowns, Electronics, and TK7800-8360

This paper presents a system for the remote design and testing of electronic circuits and devices with FPGAs during COVID-19 and similar lockdown periods when physical access to laboratories is not permitted. The system is based on the application of the IoT concept, in which the final device is a test board with an FPGA chip. The system allows for remote visual inspection of the board and the devices linked to it in the laboratory. The system was developed for remote learning taking place during the lockdown periods at Poznan University of Technology (PUT) in Poland. The functionality of the system is confirmed by two demonstration tasks (the use of the temperature and humidity DHT11 sensor and the design of a generator of sinusoidal waveforms) for students in the fundamentals of digital design and synthesis courses. The proposed solution allows, in part, to bypass the time-consuming simulations, and accelerate the process of prototyping digital circuits by remotely accessing the infrastructure of the microelectronics laboratory.

Autonomous robot, Assembly, Motion generation, Deep predictive learning, Technology, Mechanical engineering and machinery, TJ1-1570, Control engineering systems. Automatic machinery (General), TJ212-225, Machine design and drawing, TJ227-240, Technology (General), T1-995, Industrial engineering. Management engineering, T55.4-60.8, Automation, T59.5, Information technology, and T58.5-58.64

Abstract We propose a novel robotic system that combines both a reliable programming-based approach and a highly generalizable learning-based approach. How to design and implement a series of tasks in an atypical environment is a challenging issue. If all tasks are implemented using a programming-based approach, the development costs will be huge. However, if a learning-based approach is used, reliability is an issue. In this paper, we propose novel design guidelines that focus on the respective advantages of programming-based and learning-based approaches and select them so that they complement each other. We use a program-based approach for motions that is rough behavior and a learning-based approach for motion that is required complex interaction between robot and object of robot tasks and are difficult to achieve with a program. Our learning approach can easily and rapidly accomplish a series of tasks consisting of various motions because it does not require a computational model of an object to be designed in advance. We demonstrate a series of tasks in which randomly arranged parts are assembled using an actual robot.

modeling, production, pre-production, block-modular milling cutter, technological route, 3d prototyping, layout, моделирование, подготовка производства, производство, блочно-модульная фреза, технологический маршрут, 3d-прототипирование, макет, Technology, Industry, and HD2321-4730.9

The article describes the main structural elements and the scheme of forming block-modular milling cutters, analyzes the forms of body modules and chip-removing grooves, as well as the methods of manufacturing milling cutters. The technological route of 3D printing of blocks of tool and body modules and the technological scheme of assembling milling cutters are presented. There is an assessment of the compliance of the parameters of the accuracy of the dimensions of the models of milling cutters specified in the drawing, and recommendations for the use of plastic materials for the production of models of milling cutters. Объект исследования – подготовка производства блочно-модульных фрез с использованием 3D-прототипирования. Целью работы является выработка рекомендаций по подготовке производства с использованием 3D-прототипирования; изготовлению экспериментальных образцов БМФ. Рассматриваются основные конструктивные элементы и схема формирования блочно-модульных фрез, проанализированы формы корпусных модулей и стружкоотводящих канавок, а также методы изготовления фрез, приведены технологический маршрут 3D-печати блоков резцовых и корпусных модулей и технологическая схема сборки фрез, дана оценка соответствия параметров точности размеров макетов фрез заданным на чертеже и приведены рекомендации по использованию марок пластиковых материалов для изготовления макетов фрез.

degree of crystallinity, polyamide-6, rapid prototyping, nanocomposite, self-healing, Technology, and Science

Polymer components capable of self-healing can rapidly be manufactured by injecting the monomer (ε-caprolactam), activator and catalyst mixed with a small amount of magnetic nanoparticles into a steel mould. The anionic polymerisation of the monomer produces a polymer component capturing magnetic nanoparticles in a dispersed state. Any microcracks developed in this nanocomposite component can be healed by exposing it to an external alternating magnetic field. Due to the magnetocaloric effect, the nanoparticles locally melt the polymer in response to the magnetic field and fill the cracks, but the nanoparticles require establishing a network within the matrix of the polymer through effective dispersion for functional and uniform melting. The dispersed nanoparticles, however, affect the degree of crystallinity of the polymer depending on the radius of gyration of the polymer chain and the diameter of the magnetic nanoparticle agglomerates. The variation in the degree of crystallinity and crystallite size induced by nanoparticles can affect the melting temperature as well as its mechanical strength after testing for applications, such as stimuli-based self-healing. In the case of in situ synthesis of the polyamide-6 (PA6) magnetic nanocomposite (PMC), there is an opportunity to alter the degree of crystallinity and crystallite size by optimising the catalyst and activator concentration in the monomer. This optimisation method offers an opportunity to tune the crystallinity and, thus, the properties of PMC, which otherwise can be affected by the addition of nanoparticles. To study the effect of the concentration of the catalyst and activator on thermal properties, the degree of crystallinity and the crystallite size of the component (PMC), the ratio of activator and catalyst is varied during the anionic polymerisation of ε-caprolactam, but the concentration of Fe3O4 nanoparticles is kept constant at 1 wt%. Differential Scanning Calorimetry (DSC), Fourier-transform infrared spectroscopy (FTIR), XRD (X-ray diffraction) and Thermogravimetric analysis (TGA) were used to find the required concentration of the activator and catalyst for optimum properties. It was observed that the sample with 30% N-acetyl caprolactam (NACL) (with 50% EtMgBr) among all of the samples was most suitable to Rapid Prototype the PMC dog-bone sample with the desired degree of crystallinity and required formability.

Science

Generic approach for rapid prototyping is essential for the progress of synthetic biology. Here the authors modify the cell-free translation system to control protein aggregation and folding and validate the approach by using single conditions for prototyping of various disulfide-constrained polypeptides.

congenital malformations of the spine, 3d design and prototyping, surgery for spinal deformities., Surgery, and RD1-811

The experience of using the method of 3D design and prototyping is examplified in a clinical case of surgical treatment of a six-year-old patient with kyphoscoliotic deformity of the spine due to congenital malformation of the L1 vertebra. At the stage of diagnostics and preoperative preparation, a created model of the deformed spine was used in the form of a breadboard variant made according to the data of spiral X-ray CT on a 3D printer from a plastic polymer material. The use of the created model of the deformed spine made it possible to additionally visualize and touch the pathological object in full size, to really assess the anatomical features and parameters of the interested vertebral segments and the altered spinal canal, which provided significant constructive assistance in planning surgical intervention and its immediate technical implementation.

Additive manufacturing, 3-D printing, millimeter-wave, sub-THz, G-band, WR-5, Electrical engineering. Electronics. Nuclear engineering, and TK1-9971

Polymer-based additive manufacturing using 3-D printing for upper-millimeter-wave (ca. 100 to 300 GHz) frequency applications is now emerging. Building on our previous work, with metal-pipe rectangular waveguides and free-space quasi-optical components, this paper brings the two media together at G-band (140 to 220 GHz), by demonstrating a compact multi-channel front-end subsystem. Here, the proof-of-concept demonstrator integrates eight different types of 3-D printed components (30 individual components in total). In addition, the housing for two test platforms and the subsystem are all 3-D printed as single pieces, to support plug and play development; offering effortless component assembly and alignment. We introduce bespoke free-space TRM calibration and measurement schemes with our quasi-optical test platforms. Equal power splitting plays a critical role in our multi-channel application. Here, we introduce a broadband 3-D printed quasi-optical beamsplitter for upper-millimeter-wave applications. Our quantitative and/or qualitative performance evaluations for individual components and the complete integrated subsystem, demonstrate the potential for using consumer-level desktop 3-D printing technologies at such high frequencies. This work opens-up new opportunities for low-cost, rapid prototyping and small-batch production of complete millimeter-wave front-end subsystems.

Computer engineering. Computer hardware, TK7885-7895, Information technology, T58.5-58.64, Science, Electronic computers. Computer science, and QA75.5-76.95

Purpose – This paper focuses on designing a purchase request and financial tracking system to better support the government agencies in fast, easy management and better understand a more comprehensive strategy for its financial activities. Method – It employs an agile prototyping approach for fast and cost-effective turnaround. UML approach was utilized for designing process models and data models. Results – The prototypes allow you to observe real user behavior as they interact with your design and obtain detailed feedback about your designs, alternatives, and ideas before implementing them. Various process and data models are designed and presented in this paper with exact and comprehend steps for the programmers to follow during the software development life cycle (SDLC). Conclusion – Making the developed models as the government's guide in engaging and embracing emerging technological innovations would impact the purchase request processes and financial tracking management quality. These models will certainly provide new knowledge, theories, and methods for the experts who will put these prints into action or implementation and other researchers who wish to seek facts relevant to purchase requests and financial tracking of government transactions. Recommendations – It is recommended to utilize this design to develop the software in a purchase request and financial tracking in government agencies in the Philippines. It is also recommended to consider adding PR Mapping; aside from tracking the PR through status, they could suggest adding the PR mapping to track the PR, upload other documents that require in their purchase request, and adding machine learning algorithms to predict the budget allocation of each office for the next incoming years. Research Implications – This paper's results will eventually be significant in the development of a purchase request system for different government agencies in the Philippines.

road safety education, virtual environment, augmented reality, multimedia, prototyping, usability, Telecommunication, and TK5101-6720

The increasing number of road accidents and deaths among children in Malaysia is a concern. One of the main causes stems from lack of knowledge and skills in dealing with the complexity and condition of the road system. Recognizing the significance of road safety among students, road safety education has been introduced to primary schoolsby the Ministry of Education in 2008. Initially it was blended into the Malay language subject with the goal to equip the children withthe knowledge and skills about road safety.However, road safety teaching and learning still uses the conventional methods without the use of specialized tools. This paper introduces ROSE courseware, a specialized learning tool developed to meet the needs of the Malaysian primary school curriculum for road safety education. Its learning environment is a blend of virtual reality, augmented reality and interactive multimedia, which enables children to understand and acquire skills related to road safety through interactive, real-time and immersive learning tool. In order to receive the children’s feedbacks pertaining to their experience in interacting with the ROSE courseware, a usability evaluation was conducted. The results show that the children strongly agreed on the usefulness, information quality and interface quality of the ROSE courseware.

Antar Muka, Prototyping, Rapid Prototyping, Perancangan, Sistem Portofolio, Information technology, T58.5-58.64, Computer software, and QA76.75-76.765

COVID 19 (Corona Virus Disease 2019) memberikan efek yang besar dalam bidang pendidikan, misalnya kegiatan belajar-mengajar mengalami perubahan dari pertemuan kelas menjadi sistem daring yang memanfaatkan teknologi dan internet. Siswa, mahasiswa, orang tua, dan pendidik harus beradaptasi dengan metode pembelajaran daring. Sebagai salah satu instansi pendidikan di bidang seni, Institut Seni Indonesia (ISI) Yogyakarta juga merasakan efek dari pandemi COVID 19 ini. Selain kegiatan belajar mengajar, adaptasi yang cepat juga dilakukan pada proses Penerimaan Mahasiswa Baru (PMB) Program Diploma di jalur mandiri. Dalam kondisi COVID 19 ini, calon mahasiswa tentu juga akan terbatas untuk melaksanakan ujian secara langsung. Sistem Unggah Portofolio PMB Diploma dirancang untuk membantu calon mahasiswa supaya tetap dapat mendaftar ke ISI Yogyakarta dan tetap melanjutkan pendidikan untuk tingkat selanjutnya. Perancangan sistem unggah portofolio menggunakan metode prototyping dengan tujuan untuk mempercepat proses perancangan interface dan kinerja dari tim developer. Perancangan prototype menggunakan jenis Low Fidelity Prototype dan High Fidelity Prototype memberikan kemudahan komunikasi BAAKSI dan Tim Developer. Hasil usability testing yang diterapkan di akhir pengembangan memberikan hasil yang sangat baik yaitu antara 93% -100% untuk 5 kriteria yang diuji. Penerapan metode prototyping ini sangat sesuai diterapkan dalam proses perancangan sistem unggah portofolio yang hanya memiliki waktu developing singkat, namun dapat memberikan hasil rancangan interface yang optimal.

auricular prosthesis, maxillofacial prosthetics, polymer model, rapid prototyping, silicone prosthesis, vacuum casting, Surgery, RD1-811, Neoplasms. Tumors. Oncology. Including cancer and carcinogens, and RC254-282

Context: Three-dimensional printing technologies have been used recently for patients with maxillofacial deformities who seek esthetic prosthesis. The aim of the present study was to assess the accuracy, surface texture, marginal adaptation, patient satisfaction, and ease of fabrication of silicone auricular prostheses fabricated by the rapid prototyping technology (RPT) when compared to the conventional method (CM). Materials and Methods: A pilot study was conducted on five patients who had partial auriculectomy defects. Ear prostheses fabricated by CM and RPT were compared. RPT include the fabrication of prostheses by the duplication of polymer model fabrication or by injecting silicone to mold obtained by Vacuum casting method (VCM). The prostheses were evaluated by 15 randomly allotted trained independent observers based on the Likert Scale. The patients performed a self-rating assessment followed by a report from the clinician and technician. Statistical Analysis: The scores for each of the dimension were analyzed using the ANOVA. The cost, time, and quantity of silicone material were expressed in means for three fabrication methods. Results: Prostheses fabricated by RPT yielded superior scores in terms of accuracy, texture, and marginal fit; the vacuum casted prostheses being more precise. The patient perspective was in favor of RPT though not significant statistically. Time for fabrication and number of patient visits were less for rapid prototyping methods than CM. Conclusion: The present study demonstrated the potential benefits of digital method in the fabrication of auricular prosthesis using RPT in the field of maxillofacial rehabilitation.

hybrid power system, security robot, prototyping, Technology, Engineering (General). Civil engineering (General), TA1-2040, Biology (General), QH301-705.5, Physics, QC1-999, Chemistry, and QD1-999

This paper describes our best practices related to hybrid power system (HPS) development with a focus on the prototyping phase. Based on the main development goals of our security robot, 24 h continuous operation on a single charge as a top priority, the HPS specifications were developed in the previous phase. For long-duration missions, batteries are hybridized with hydrogen fuel cells. By hybridization, the practical issues of fuel cells can be addressed such as lack of durability and low power density. With the developed specifications of the HPS, its components were acquired and installed to build a prototype. Using an electronic load coupled with a charge-discharge system controller, the constructed prototype was tested, discovering the maximum output power (850 W) that the fuel cell can sustain for 24 h. To further increase the energy density of the HPS, its structure was converted to a plug-in hybrid. With the developed HPS simulator, the converted HPS was simulated, predicting an extended hours of operation (2.07 h) based on the larger battery (7S12P) over the widest SOC window (90%). The plug-in HPS prototype was integrated into the security robot. On a dedicated chassis dynamometer, the integrated prototype was tested, demonstrating its capability to continuously operate the security robot for 24 h.

Information technology, T58.5-58.64, Electronic computers. Computer science, and QA75.5-76.95

In this research, a Feed-Forward Artificial Neural Network design was implemented on Xilinx Spartan 3S1000 Field Programable Gate Array using XSA-3S Board and prototyped blood type classification device. This research uses blood sample images as a system input. The system was built using VHSIC Hardware Description Language to describe the feed-forward propagation with a backpropagation neural network algorithm. We use three layers for the feed-forward ANN design with two hidden layers. The hidden layer designed has two neurons. In this study, the accuracy of detection obtained for four-type blood image resolutions results from 86%-92%, respectively.

IEC 61499, adapters, handshaking, message verification, sub-application, componentdesign, Electrical engineering. Electronics. Nuclear engineering, and TK1-9971

Component-Design Architecture has been in demand based on the growing needs for modularity and flexibility in the automation industry. IEC 61499 standard, a component-based automation architecture, provides various tools and techniques for automation developers to accommodate the need for flexibility in automation sequences. However, the adapter concept, one of the significant features of the standard, remains untouched and undeveloped since its inclusion in the standard and lacks the utilization of its true potential. In this work, we enhance the adapter concept by proposing the addition of logic into them. This proposition advances the adapter technology and gives the automation standard more capabilities to support higher levels of modularization without the increase of applications complexity.

fdm (fused deposition modeling), fff (fused filament fabrication), 3d printing, spare parts, agricultural machinery, cost analysis, Mechanics of engineering. Applied mechanics, and TA349-359

The aim of this research was to determine the possibility of applying alternative techniques for the production of prototypes for spare parts in agriculture and to determine the possible directions of development of their applications in the engineering industry. Then, to determine which spare parts could be produced using the FDM technique, comparisons of the most important parameters of spare parts produced independently (using the FDM technique) and obtained from producers (produced using traditional methods in professional factories) were made. A number of factors were analysed, from technical parameters such as machine type, processed material and its consumption including required as support structures, to economic issues such as manufacturing or purchase delivery total time and cost. The FDM technique has proven itself in many ways in the production of spare parts for agricultural machinery.

permanent magnet, magnet prototyping, dipole magnet, quadrupole magnet, solenoid magnet, Physics, QC1-999, Nuclear and particle physics. Atomic energy. Radioactivity, and QC770-798

We describe a framework to assemble permanent-magnet cubes in 3D-printed frames to construct dipole, quadrupole, and solenoid magnets, whose field, in the absence of iron, can be calculated analytically in three spatial dimensions. Rotating closely spaced dipoles and quadrupoles in opposite directions allows us to adjust the integrated strength of a multipole. The contributions of unwanted harmonics were calculated and found to be moderate. We then combined multiple magnets to construct beam-line modules: a chicane, a triplet cell, and a solenoid focusing system.

Urology robot, Dynamic simulation, Virtual prototyping, Serial manipulator, Feedforward control, Ocean engineering, TC1501-1800, Mechanical engineering and machinery, and TJ1-1570

Abstract Prostatic hyperplasia and tumor are common diseases, and the minimally invasive surgery inserting the instruments through the urethra into the prostate is commonly conducted. Taking the robotic manipulator for such surgery into consideration, this paper analyses the workspace of the end effector, and proposes the distribution error of the fixed point and the tracking error of manipulator end effector on the cone bottom surface of the workspace as the basis for control implementation of the manipulator. The D-H coordinate system of the manipulator is established and the trajectory planning of the end effector in the Cartesian space is carried out. The digital model was established, and dynamics simulation was performed in Solidworks and Matlab/Simulink environment to guide the manipulator design. Trajectory mapping and synchronization control between virtual model and the actual manipulator are realized based on digital twin technique. The virtual manipulator can reflect the real-time state of the manipulator with data interaction by comparing the dynamics simulation results with the motor current values obtained by experiment. Experiment was carried out with PD feedback control and Newton–Euler dynamics based feedforward control to get the trajectory tracking characteristic of each motor, errors of the fixed point and tracking performance of the end effector of the manipulator. The results show that compared with PD feedback control, feed forward control implementation can achieve a reduction of 30.0% in the average error of the fixed point of the manipulator and a reduction of 33.3% in the maximum error.

Ultraviolet germicidal irradiation (UVGI) lights, Indoor air quality (IAQ), Dehumidification, Reduce fungi, Science (General), and Q1-390

Many New Zealand residential dwellings suffer from dampness and fungi during the winter, which can cause respiratory health problems. This can be due to poor insulation and ventilation, and the situation worsens when residents cannot afford to heat the dwelling. The main aim of this paper is to modify an existing dehumidifier so that it can remove moisture, heat the living space and reduce fungi growth and bacteria. To achieve that, we installed ultraviolet germicidal lights (UVGI) in an existing dehumidifier with a total cost of USD $150.7 (NZD $213.76). The UVGI lights are known to be efficient in destroying the DNA of fungi and bacteria. The results show that the device reduced the fungi growth and did increase the room temperature because the dehumidifier captured two litres of water over 24 h of testing. The proposed device did achieve a reduction in particulate matters, from 0.9 μg/m3 to 0.14 μg/m3 and an acceptable range of relative humidity below 50%, which reduces the favourable conditions for fungi growth. Therefore, our proposed low-cost device does improve the indoor air quality (IAQ) in the living space.

Miniaturized mechanical test, Miniaturized tensile test (MTT), Miniaturized tensile specimen (MTS), Specimen size effects, Slimness ratio, Mining engineering. Metallurgy, and TN1-997

This work aims to evaluate the use of miniaturized tensile specimen (MTS) to characterise the mechanical properties of alloys developed through rapid alloy prototyping (RAP), where high throughput tests are required on relatively small amounts of material. Tensile tests were conducted at a variety of strain rates and with increasingly smaller specimen sizes, ranging from larger specimens conforming to ASTM/ISO standards, down to small non-standard specimens. The gauge lengths of the specimens ranged from 50 to 80 mm for the standard specimens down to 5–10 mm for the non-standard specimens. To generalize the non-standard MTS designs, three alloys, DP800, DP600 and 316L stainless steel, were adopted. The results obtained from non-standard designs were compared with those from standard designs. The results show that non-standard designs can give repeatable results for yield strength (YS), ultimate tensile strength (UTS) and uniform elongation (eU). The maximum result differences of YS, UTS and eU are 7.37%, 7.71% and 11.9%, respectively, for DP alloys comparing standard and non-standard dimensions. These values are 13.56%, 14.03% and 19.5%, respectively 316L steel. The total elongation (ef) increases as the specimen dimension decreases. The geometrically dependent constants (n) are 0.2, 0.31 and 0.11 for DP800, DP600 and 316L, respectively. However, the Young's modulus is hard to determine precisely from the miniaturized designs. The conclusion from this work is that miniaturized tensile testing can be used with confidence as a high throughput means of predicting standard mechanical properties across a range of steels.

direct torque control, fast prototyping card, hamiltonian machine model, synchronous reluctance motor, Electrical engineering. Electronics. Nuclear engineering, and TK1-9971

The Synchronous Reluctance Machine (SynRM) is an electrical machine in which the useful electromagnetic torque is produced due to rotor saliency. Its high power- and torque-to-mass ratio and very good efficiency make it a cheap and simple alternative for permanent magnet or induction motors, e.g. in electromobility applications. However, because of magnetic nonlinearities, the rotational speed and torque control of a SynRM is a nontrivial task. In the paper, a control algorithm based on a Hamiltonian mathematical model is presented. The model is formulated using measurement results, obtained by the drive controller. An algorithm is tested in the drive system consisting of a SynRM with the classical rotor and a fast prototyping card. The drive dynamic response in transient states is very good, but the proposed algorithm does not ensure the best efficiency after steady state angular velocity is achieved.

science fiction prototyping, robot ethics, robot rights, law, ai, and Language and Literature

Science fiction narratives have not only influenced the way the majority of people imagine the future, but they have also shaped the general expectations for the technological development. This phenomenon has been called “science fiction prototyping” by Brian David Johnson. The prototype of a robot is created by science fiction works. Robots as artificially created entities are often presented as potential “members” of future society. Therefore, their legal status in imaginary reality is worth considering. The analysis of Blade Runner (1982) by Ridley Scott and I, Robot (2004) by Alex Proyas juxtaposes features that, according to the legal tradition, are most often attributed to moral subjects of legal protection with human-like features of robots. The interdisciplinary approach adopted in this study involves applying legal reasoning to the study of science fiction.

Electronic computers. Computer science and QA75.5-76.95

Unmanned aerial vehicles (UAVs), particularly quadcopters, have several medical, agriculture, surveillance, and security applications. However, the use of this innovative technology for civilian applications is still very limited in low-income countries due to the high cost, whereas low-cost controllers available in the market are often tuned using the hit and trial approach and are limited for specific applications. This paper addresses this issue and presents a novel proof of concept (POC) low-cost quadcopter UAV design approach using a systematic Model-Based Design (MBD) method for mathematical modeling, simulation, real-time testing, and prototyping. The quadcopter dynamic model is developed, and controllers are designed using Proportional Integral, and Derivative (PID), Pole Placement, and Linear Quadratic Regulator (LQR) control strategies. The stability of the controllers is also checked using Lyapunov stability analysis. For verification and validation (V&V) of the design, Software-in-the-Loop, Processor-in-the-Loop, Hardware-in-the-loop testing, and Rapid Control Prototyping have been performed. The V&V methods of the MBD approach showed practically valid results with a stable flight of the quadcopter prototype. The proposed low-cost POC quadcopter design approach can be easily modified to have enhanced features, and quadcopters with different design parameters can be assembled using this approach for a diverse range of applications.

rammed earth construction, prototyping, production and constructive process, seismic resistance, thermal performance, Environmental effects of industries and plants, TD194-195, Renewable energy sources, TJ807-830, Environmental sciences, and GE1-350

Buildings of the future are called to meet increasingly high-performance requirements and to ensure adequate environmental sustainability of the production and construction chain. This issue has stimulated a keen interest in the use of natural materials in construction. Among these, raw earth has proved to be particularly interesting for its intrinsic availability, sustainability, and recyclability. In Europe, the spread of raw earth building technologies has often been hindered by the lack of specific legislation regulating its use for load-bearing structures, even if in many countries, it can be noticed a widespread and well-established constructive tradition. Some transoceanic research experiences attest that unfired earth can be used, together with different types of reinforcements, to create seismic-resistant buildings. After presenting a review of the main raw earth reinforced technologies, the present study focuses on a novel reinforced and modular rammed earth construction made with natural or recycled materials, developing a technology with low energy consumption and low environmental impact, specifically designed for areas with high seismic risk. In particular, the work presents the results of a prototyping procedure aiming at developing a new seismic-resistant construction system that combines rammed earth with timber reinforcement elements and nylon/polyester ropes. These elements have a dual function: (1) they are fundamental components of the construction process (as they integrate the formwork system), and (2) they act as seismic-resistant devices once the structure is completed. In line with the performance-based approach required by the construction sector, the study aims at defining a controlled and standardised supply chain for rammed earth construction.

IoT, multimedia, multisensory, mulsemedia, IoT prototyping, virtual environments, Technology, Engineering (General). Civil engineering (General), TA1-2040, Biology (General), QH301-705.5, Physics, QC1-999, Chemistry, and QD1-999

Business models built upon multimedia/multisensory setups delivering user experiences within disparate contexts—entertainment, tourism, cultural heritage, etc.—usually comprise the installation and in-situ management of both equipment and digital contents. Considering each setup as unique in its purpose, location, layout, equipment and digital contents, monitoring and control operations may add up to a hefty cost over time. Software and hardware agnosticity may be of value to lessen complexity and provide more sustainable management processes and tools. Distributed computing under the Internet of Things (IoT) paradigm may enable management processes capable of providing both remote control and monitoring of multimedia/multisensory experiences made available in different venues. A prototyping software to perform IoT multimedia/multisensory simulations is presented in this paper. It is fully based on virtual environments that enable the remote design, layout, and configuration of each experience in a transparent way, without regard of software and hardware. Furthermore, pipelines to deliver contents may be defined, managed, and updated in a context-aware environment. This software was tested in the laboratory and was proven as a sustainable approach to manage multimedia/multisensory projects. It is currently being field-tested by an international multimedia company for further validation.

prototyping, constructionism, dual coding theory, analytical-synthetic action, Architectural drawing and design, and NA2695-2793

Reflecting upon the constructionist model "learning-bymaking," prototyping (prototype making) as a product design and research approach is well recognised for assured development of innovative concepts in individual or collaborative working environments. A prototype is typically used as a tool to support experiments or interventions and to evaluate research goals. It also facilitates participatory design and user-centred design. However, it carries both coded and tacit knowledge that we, design educators and practitioners, find problematic to explain and instruct, particularly to non-designers. This paper amalgamates and argues the characteristics of prototyping including types, formats, and principles through literature review. Reflecting upon the designer’s intentions and the dual coding cognitive learning process, the author proposes a descriptive model that illustrates the dual actions experienced by the designer which can enable study on the improvement of the prototyping process.

Science

Practical implementation of genetic circuits is difficult due to low predictability and time-intensive troubleshooting. Here the authors present Cyberloop, which interfaces a computer with single cells to enable cell-in-the-loop testing and optimization of circuit designs before they are built.

Material, Prototyping, Sliding sudare, Architecture, NA1-9428, Architectural engineering. Structural engineering of buildings, and TH845-895

Sliding Sudare has a big potential to be developed considered its high effectiveness in minimizing building energy consumption while still maintaining its visibility quality. Meanwhile, its original blinds that is made of bamboo cannot withstand extreme weather and have a short lifespan. Therefore, this research is to investigate the effectiveness of the other material alternatives namely stainless steel, plastic, and natural fiber. A scaled model is used for prototyping the materials in the shape of bicycle spokes, PLA+ (3D printer filament), and bamboo slats as the blinds. These everyday objects were tested in terms of their physical characteristic and were measured by four parameters (security requirement, weather resistance, construction process, and cost-effectiveness). From the research, it was concluded that bicycle spokes has the highest overall performance with the highest advantages in weather resistance requirement, cost-effectiveness, and construction; whilst PLA+ and bamboo slats have the least overall performance though both have high advantage in terms of security requirement.

Medicine and Science

Human gait is a unique behavioral characteristic that can be used to recognize individuals. Collecting gait information widely by the means of wearable devices and recognizing people by the data has become a topic of research. While most prior studies collected gait information using inertial measurement units, we gather the data from 40 people using insoles, including pressure sensors, and precisely identify the gait phases from the long time series using the pressure data. In terms of recognizing people, there have been a few recent studies on neural network-based approaches for solving the open set gait recognition problem using wearable devices. Typically, these approaches determine decision boundaries in the latent space with a limited number of samples. Motivated by the fact that such methods are sensitive to the values of hyper-parameters, as our first contribution, we propose a new network model that is less sensitive to changes in the values using a new prototyping encoder-decoder network architecture. As our second contribution, to overcome the inherent limitations due to the lack of transparency and interpretability of neural networks, we propose a new module that enables us to analyze which part of the input is relevant to the overall recognition performance using explainable tools such as sensitivity analysis (SA) and layer-wise relevance propagation (LRP).

Discontinuous Galerkin method, High-order methods, Python, Computer software, and QA76.75-76.765

In this paper, we present Quail, a lightweight discontinuous Galerkin solver written in Python. The aim of this code is to serve not only as a teaching tool for newcomers to the rapidly growing field, but also as a prototyping platform for testing algorithms, physical models, and other features in the discontinuous Galerkin framework. Code readability, modularity, and ease of use are emphasized. Currently, Quail solves first- and second-order partial differential equations on 1D and 2D unstructured meshes. A variety of time stepping schemes, quadrature rules, basis types, equation sets, and other features are included. The structure and capabilities of the code, as well as representative examples involving propagation of a 2D isentropic vortex and a 2D Riemann problem with a gravity source term, will be discussed.

face milling, cutting process dynamics, vibration suppression, hybrid modeling, modal analysis, virtual prototyping, Technology, Electrical engineering. Electronics. Nuclear engineering, TK1-9971, Engineering (General). Civil engineering (General), TA1-2040, Microscopy, QH201-278.5, Descriptive and experimental mechanics, and QC120-168.85

The paper presents an original method concerning the problem of vibration reduction in the general case while milling large-size and geometrically complex details with the use of an innovative approach to the selection of spindle speed. A computational model is obtained by applying the so-called operational approach to identify the parameters of the workpiece modal model. Thanks to the experimental modal analysis results, modal subsystem identification was performed and reliable process data for simulation studies were obtained. Next, simulations of the milling process, for successive values of the spindle speed, are repeated until the best vibration state of the workpiece is obtained. For this purpose, the root mean square values of the time plots of vibration displacements are examined. The effectiveness of the approach proposed for reducing vibrations in the process of face milling is verified on the basis of the results of appropriate experimental investigations. The economic profitability of the implementation of the operational technique in the production practice of enterprises dealing with mechanical processing is demonstrated as well.

Decision tables, Knowledge base, Rules, RVML, PKBD, Computer software, and QA76.75-76.765

We present a new release of the expert systems prototyping software Personal Knowledge Base Designer. The software provides the use of a special notation for rule modeling, namely, Rule Visual Modeling Language (RVML); wizards for creating and editing knowledge base elements; conceptual models, and canonical spreadsheet tables as main sources of domain knowledge. The new version presents enhancements of existing tools and introduces new abilities: using decision tables as a new source of domain knowledge; implementation of an RVML extension for modeling incompleteness and inaccuracy in logical rules, namely, FuzzyRVML; generation source codes for PHP (Hypertext Preprocessor) and FuzzyCLIPS.

prototyping, user interface, information system, internship, Mathematics, QA1-939, Electronic computers. Computer science, and QA75.5-76.95

Human Resources (HR) is one of the important things that determines the success of the services of a company, one of the things done to prepare a good HR is to launch a program of Job Training (PKL) or also known as an internship. PT.Gramedia Asri Media became one of the companies implementing the internship program, but the existing internship program was still carried out manually by distributing information to tertiary institutions via email. This journal aims to create an apprenticeship information system design by developing a system using the prototyping method so that the apprenticeship process can be carried out in a single system from the dissemination of information to the resolution of administrative problems related to finance and the need for an apprenticeship approval document. The system development method used therein is the prototyping method that starts from analyzing user needs to creating a User Interface (UI) that is easily understood by the user. The apprenticeship information system is expected to make the apprenticeship process more effective both in registering and processing the internship data contained therein.

3D printing, aortic coarctation, bicuspid aortic valve, computed tomography, Ozaki repair, rapid prototyping, Diseases of the circulatory (Cardiovascular) system, and RC666-701

Two patients with bicuspid aortic valve were selected for aortic valve repair using the Ozaki procedure. Patient-specific models of their aortic roots were generated based on computed tomography data and were 3-dimensional printed using a flexible resin. The models allowed sizing of the valve leaflets and practicing of leaflet suturing. (Level of Difficulty: Advanced.)

radial deformity, radial fractures complications, x-ray tomography, three-dimensional printing, Medicine, Orthopedic surgery, and RD701-811

Abstract Distal radial fractures are very common. Vicious consolidation can occur in up to one third of these fractures, resulting in wrist pain, restricted movement, and, eventually, physical limitation or disability. The treatment of this condition consists in corrective osteotomy, which requires careful preoperative planning due to its three-dimensional complexity, especially in injuries with joint involvement. Recently, prototyping based on three-dimensional (3D) reconstruction of computed tomography (CT) scans has been used for osteotomy planning in a 3D anatomical model. It allows a better understanding of the deformity in a realistic surgical approach, leading to safer, faster, and more predictable procedures. The aim of the present study is to present this technique and show its use in two clinical cases.

prototyping, human-robot interactions, user studies, social robotics, robot companions, and Technology

This paper presents a proof of concept prototype study for domestic home robot companions, using a narrative-based methodology based on the principles of immersive engagement and fictional enquiry, creating scenarios which are inter-connected through a coherent narrative arc, to encourage participant immersion within a realistic setting. The aim was to ground human interactions with this technology in a coherent, meaningful experience. Nine participants interacted with a robotic agent in a smart home environment twice a week over a month, with each interaction framed within a greater narrative arc. Participant responses, both to the scenarios and the robotic agents used within them are discussed, suggesting that the prototyping methodology was successful in conveying a meaningful interaction experience.