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Journal articles on the topic '« Covert prototype »'

Author: Grafiati

Published: 14 December 2024

Last updated: 31 July 2025

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1

Krzeminska, Anna, Erik Lundmark, and Charmine E. J. Härtel. "Legitimation of a heterogeneous market category through covert prototype differentiation." Journal of Business Venturing 36, no. 2 (2021): 106084. http://dx.doi.org/10.1016/j.jbusvent.2020.106084.

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Iglesias, Félix, Fares Meghdouri, Robert Annessi, and Tanja Zseby. "CCgen: Injecting Covert Channels into Network Traffic." Security and Communication Networks 2022 (May 29, 2022): 1–11. http://dx.doi.org/10.1155/2022/2254959.

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Covert channels are methods to convey information clandestinely by exploiting the inherent capabilities of common communication protocols. They can be used to hide malware communication as part of cyber attacks. Here, we present CCgen, a framework for injecting covert channels into network traffic that includes modules for common covert channels at the network and transport layer and allows a smooth integration of novel covert channel techniques. Our tool—openly available and implemented in Python—enables the operation on-the-fly in live communications as well as the manipulation of network tr

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Alexandrova, Elmira. "“This Lovely Short Story “Dushechka” (“The Darling”)” (Chekhov’s Image in Gazdanov’s Novel “Nochnye dorogi” (“Night Roads”) in the Context of Cryptopoetics)." Проблемы исторической поэтики 20, no. 3 (2022): 135. http://dx.doi.org/10.15393/j9.art.2022.11243.

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The present study is devoted to several instances of Gaito Gazdanov’s cryptographic references to the texts of A. P. Chekhov. The focus of the study is the image of the Russian emigrant Fedorchenko, portrayed in Chekhov’s style. His literary prototype is the heroine of the short story “Dushechka” (“The Darling”). An appeal to Gazdanov’s publicistic speech “On Chekhov” allows to decipher the “Chekhovian” subtext of the image. The article also contains an analysis of the image of Suzanne who, being Fedorchenko’s heroinedouble, is still portrayed by the author in a different vein. Tolstoy’s inter

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ANDERSON, JOHN M. "Finiteness, mood, and morphosyntax." Journal of Linguistics 43, no. 1 (2007): 1–32. http://dx.doi.org/10.1017/s0022226706004439.

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The approach adopted here identifies finiteness with the capacity to license an independent predication. The prototypical independent predication is positive and declarative; other ‘moods’, or main-clause types, while finite, may fail to display the morphosyntactic properties associated with this prototype. These properties vary from language to language, but the recurrent core properties are verbal, since the verb is the prototypical predicator. Some constructions that occur in both main and subordinate clauses, such as the infinitival in English, differ in interpretation in these two differe

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Capligns, Filips, Ruslans Babajans, Darja Cirjulina, Deniss Kolosovs, and Anna Litvinenko. "Frequency-Modulated Antipodal Chaos Shift Keying Chaotic Communication on Field Program Gate Array: Prototype Design and Performance Insights." Applied Sciences 15, no. 3 (2025): 1156. https://doi.org/10.3390/app15031156.

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Using chaos for communication can provide more robust channel security, covert transmission, and inherent support for spread-spectrum modulation. Although numerous studies have explored this technology, its practical deployment remains limited due to substantial hardware demands, complex signal processing, and a lack of efficient modulation methods for chaotic signals. In this study, a novel chaotic digital communication system is proposed and studied. A prototype of a frequency-modulated antipodal chaos shift keying (FM-ACSK) system is implemented on an Intel Cyclone V field-programmable gate

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Hossain, Md Fahim Tanvir, and Samer Dessouky. "Development of a Solar Prototype for Roadway." MATEC Web of Conferences 271 (2019): 08007. http://dx.doi.org/10.1051/matecconf/201927108007.

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This study is a preview of an ongoing project to develop a solar prototype for roadway to harness solar energy with the addition of transparent shield cover. Solar panel on roadway is a new research arena which has the potential to reform the conventional road network systems. Since pavements are often exposed to a great amount of solar energy throughout the day, they can be used to develop a technique which can accumulate and store this solar energy and later convert it into electricity. The development of the prototype involved selecting several polycarbonate materials as transparent shield

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Belikov, Viktor, Serhii Kovalishyn, Inna Symonenkova, and Volodymyr Symonenkov. "INCREASING THE EFFICIENCY OF LOGISTIC SUPPORT BY BUILDING ROBOTIC ELECTROMECHANICAL TRACTORS ON THE BASIS OF TOPOLOGICAL TRANSFORMATIONS AND LOCAL SCALING OF PROTOTYPES." Collection of scientific works of Odesa Military Academy, no. 15 (September 30, 2021): 95–106. http://dx.doi.org/10.37129/2313-7509.2021.15.95-106.

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The article considers the problems related to the need to develop for the Armed Forces of Ukraine specialized robotic transport equipment for the military logistics system, namely – electromechanical tractors with high specific performance, capable of providing not only fast and covert delivery of weapons, military and special equipment, ammunition and personnel to the places of combat operations, but also the evacuation of the wounded and damaged equipment from the battlefield. Methods of realization of the set tasks on the basis of use of topological transformations and local scaling prototy

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Al-Helal, Ibrahim, Pietro Picuno, Abdullah A. Alsadon, Abdullah Ibrahim, Mohamed Shady, and Ahmed M. Abdel-Ghany. "Effect of Shape, Orientation and Aging of a Plastic Greenhouse Cover on the Degradation Rate of the Optical Properties in Arid Climates." Applied Sciences 12, no. 5 (2022): 2709. http://dx.doi.org/10.3390/app12052709.

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In arid climates, the optical properties of plastic-covered greenhouses deteriorate very quickly. To examine the effect of greenhouse shape and orientation on the degradation rate of cover optical properties, four greenhouse prototypes were constructed in two shapes (duo-pitched roof and tunnel), covered with a 200 µm thick low-density polyethylene film. Two types were oriented in the North–South direction, the other two in the East–West direction, and all were exposed for one year to an arid climate. Samples were taken from the different surfaces of each cover for testing. The total transmitt

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Wang, Jianzhong, Jiadong Shi, and Tao Jiang. "Low Acceleration Overload Catapult Technique for Throwing the Small Scout Robot." Defence Science Journal 66, no. 5 (2016): 504. http://dx.doi.org/10.14429/dsj.66.9815.

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The small scout robot is generally thrown into the war zone by soldier. The short thrown distance and the danger of soldier exposed to the enemy limit the application of the small scout robot. So this paper presents a type of low acceleration overload catapult device of no flash, no smoke and no sound. It can throw the small scout robot covertly to long distances with low acceleration overload, and avoid the danger that soldier be exposed to the enemy when artificial throwing. The high and low pressure chambers of the catapult device achieve the low acceleration overload launching, and elimina

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10

Farrell, Joseph. "Berlusconi and Forza Italia: New Force for Old?" Modern Italy 1, no. 1 (1995): 40–52. http://dx.doi.org/10.1080/13532949508454757.

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In an interview with William Rees-Mogg, Berlusconi revealed that he had two portraits hanging in his office—those of Mrs Thatcher and of the Emperor Justinian. The place allotted to Mrs Thatcher, the prime exponent of free market economics of our times, can hardly cause surprise, but that given to Justinian is less easily explicable. Berlusconi is not known for his passion for the history and politics of the Byzantine Empire, so the Justinian on whom Berlusconi rests his eyes at critical moments must be the Justinian of Dante, whom Berlusconi would have studied in school. Dante gave Justinian

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Karpozilos, Kostis. "The Defeated of the Greek Civil War: From Fighters to Political Refugees in the Cold War." Journal of Cold War Studies 16, no. 3 (2014): 62–87. http://dx.doi.org/10.1162/jcws_a_00471.

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In the fall of 1949, after the end of the Greek Civil War, the bulk of the defeated Greek Communist (KKE) fighters were covertly transported from Albania to Soviet Uzbekistan. This article addresses the covert relocation project, organized by the Soviet Communist Party, and the social engineering program intended to create a prototype Greek People’s Democracy in Tashkent. Drawing on Soviet and Greek Communist Party records, the article raises three major issues: first, the contingencies of postwar transition in the Balkans and the precarious status of the Albanian regime; second, the internati

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Cha, Hyemi, Mee Jang, Jong-Myoung Lim, Wanno Lee, and Hyuncheol Kim. "Automated Sampling System for Monitoring 85Kr in Air." Atmosphere 14, no. 7 (2023): 1103. http://dx.doi.org/10.3390/atmos14071103.

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Radioactive krypton-85 (85Kr) gas, a chemically inert and non-proliferation indicator, is derived from fission products. Its detection relies on the Budesamt für Strahlenschutz–Institute of Atmospheric Radioactivity (BfS-IAR) method, which necessitated impurity removal using soda lime, silica gel, and liquid nitrogen for cryogenic adsorption. This manual process requires frequent replacements, posing challenges for its automation. To address this, we developed a prototype krypton sampling system as an interim research product for the fully automated remote monitoring of covert nuclear activity

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Molnar, Lea Lisa, Kaitlyn Benner, Jiahui Ma, Bernadette McCrory, and Elizabeth A. Johnson. "Clinical Trial Care, Everywhere: Leveraging Mobile, Digital Technology for Effective Communication of Clinical Research: Safety Information to Rural Clinical Providers." Proceedings of the International Symposium on Human Factors and Ergonomics in Health Care 13, no. 1 (2024): 140–45. http://dx.doi.org/10.1177/2327857924131070.

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Background: Clinical trials are traditionally complex in their designs and objectives. To heighten research participant safety, communication between research and clinical teams is necessary to ensure clinical treatment is aligned with the boundaries of the research protocol and anticipated safety of the investigational product (i.e., patient medical alert information). Methods: Secondary analysis of clinical nurse patient simulation and interview transcripts via Linguistic Inquiry Word Count (LIWC-22) examined sentiments and overall nurses’ perceptions of a prototype, wearable medical device

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MEARNS, ADAM. "This, that and the other: locating the supernatural enemy in Old English." English Language and Linguistics 19, no. 2 (2015): 213–26. http://dx.doi.org/10.1017/s1360674315000064.

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This article explores the concept of the supernatural and the characterization of monsters and devils in Old English (OE), using the framework of a prototype model of semantic structure. Although there is a lexical gap, with no OE word equivalent to Present-Day English supernatural, it is possible to identify a set of semantic traits that constitute a covert conceptual category similar to the modern concept and encompassing Anglo-Saxon monsters and devils. The essence of this category is ‘exclusion’. The difference between the modern and medieval concepts is that, for the Anglo-Saxons, the bou

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Joiner, Keith F., and Ahmed A. Swidan. "Conceptualising a Hybrid Flying and Diving Craft." Journal of Marine Science and Engineering 11, no. 8 (2023): 1541. http://dx.doi.org/10.3390/jmse11081541.

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This paper introduces the conceptual design of a submersible seaplane that merges the maturity of the wing-in-ground (WIG or ekranoplan) crafts and seaplanes with covert hybrid underwater insertion, travel, and recovery. WIG crafts have a higher lift-to-drag ratio and thus improved endurance, while hybrid crafts have recently become feasible due to advances in materials, electric propulsion, and multi-medium computational fluid dynamics. The reconnaissance design can insert, loiter, and extract from underwater, surfaces if necessary; it can fly in or out of ground effect, keep watch on the sea

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Sharma, Ashiesh, Riki Baruah, and Pranjal Borah. "Design of Low Cost Optically Transparent Antenna for WiMAX applications." Journal of Physics: Conference Series 2957, no. 1 (2025): 012017. https://doi.org/10.1088/1742-6596/2957/1/012017.

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Abstract Electronic devices that are optically transparent have sparked a lot of curiosity. Many new applications for transparent electronics are being developed in vast range of industries, including glasses, displays, solar panels, terrestrial and satellite communications, sensors, and integrated circuits, where optical transparency is necessary for the covert placement of electronic equipments on surfaces. Due to the emergence of novel materials and fabrication techniques over the past 9-10 years, there have been substantial improvements made in the creation of transparent wireless electron

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Hyun, Sangwon, Junsung Cho, Geumhwan Cho, and Hyoungshick Kim. "Design and Analysis of Push Notification-Based Malware on Android." Security and Communication Networks 2018 (July 9, 2018): 1–12. http://dx.doi.org/10.1155/2018/8510256.

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Establishing secret command and control (C&C) channels from attackers is important in malware design. This paper presents design and analysis of malware architecture exploiting push notification services as C&C channels. The key feature of the push notification-based malware design is remote triggering, which allows attackers to trigger and execute their malware by push notifications. The use of push notification services as covert channels makes it difficult to distinguish this type of malware from other normal applications also using the same services. We implemented a backdoor proto

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Terán, Guillermo, Fausto Ávalos, Washington Lomas, and Iliana Quintana. "Development of Experimental Prototypes for the Teaching of Science." EPJ Web of Conferences 248 (2021): 02008. http://dx.doi.org/10.1051/epjconf/202124802008.

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The following document presents the development of educational experimental prototypes. The themes of the prototypes cover principles or concepts of physics. Like kinematics, oscillatory movements and shocks. Each prototype has sensors that allow measurements of the variables involved in the experimentation. At the same time, mobile applications are developed for devices with Android operating system, which allow the user to control the prototype from their cell phone and also view the variables measured by the experimentation prototypes. The applications also have a data export system that al

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Do, Youngwook, Jung Wook Park, Yuxi Wu, et al. "Smart Webcam Cover." Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies 5, no. 4 (2021): 1–21. http://dx.doi.org/10.1145/3494983.

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Laptop webcams can be covertly activated by malware and law enforcement agencies. Consequently, 59% percent of Americans manually cover their webcams to avoid being surveilled. However, manual covers are prone to human error---through a survey with 200 users, we found that 61.5% occasionally forget to re-attach their cover after using their webcam. To address this problem, we developed Smart Webcam Cover (SWC): a thin film that covers the webcam (PDLC-overlay) by default until a user manually uncovers the webcam, and automatically covers the webcam when not in use. Through a two-phased design

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Rodríguez-Montesdeoca, Isaura, Ángel Ramos de Miguel, Juan Carlos Falcón-González, et al. "Dynamic Visual Acuity Results in Otolith Electrical Stimulation in Bilateral Vestibular Dysfunction." Journal of Clinical Medicine 11, no. 19 (2022): 5706. http://dx.doi.org/10.3390/jcm11195706.

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(1) Background. Patients with bilateral vestibular disease (BVD) experience oscillopsia with a detriment to visual acuity (VA). This VA is driven mainly by the VOR that has two components: rotational and translational. VA can be tested by using dynamic visual acuity (DVA) on a treadmill because both systems are activated. The aim of this study is to compare VA before and after chronic electrical stimulation of the otolith organ. (2) Materials and Method. Five patients suffering from bilateral vestibular dysfunction (BVD), previously implanted with a new vestibular implant prototype, were inclu

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Khose, Ashna S. "Pneumatic exoskeletons for orthopedic rehabilitation of the upper arm—An overview." Journal of Orthopaedics, Trauma and Rehabilitation 29, no. 1 (2022): 221049172110569. http://dx.doi.org/10.1177/22104917211056947.

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An exoskeleton is an external cast which can be used to maneuver, protect or even provide a greater magnitude of strength to the upper limb allowing for heightened efficiency and performance. The limb may be weakened due to so many diseases or reasons such as paralysis, stroke, muscular atrophy, and different kinds of injuries. Numerous designs and manufactured prototypes of pneumatic exoskeletons have been reviewed—their pros and cons weighed against each other. This paper covers the fundamental concepts of various prototypes that have been designed and developed over the years. The best mech

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Piters, Ronald A. M. P., and Mia J. W. Stokmans. "Genre Categorization and its Effect on Preference for Fiction Books." Empirical Studies of the Arts 18, no. 2 (2000): 159–66. http://dx.doi.org/10.2190/0vjf-y04e-h5nu-vl5b.

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In the domain of cultural products, sets of products categorized together on the basis of perceived similarities constitute a genre. When studying the process of genre categorization, any item can be viewed as the prototype of a genre plus a list of variations. The more an item resembles the prototype, the more this item is viewed as typical of the genre. The present study focuses on the extent to which the categorization of a fiction book cover by genre helps to single out the most preferred book. It is hypothesized that the typicality of a specific genre, identified by a book's front cover,

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Fujii, Toshihiro, Justin Albury, Fraser Bradfield, et al. "Recent results from prototypes of the Fluorescence detector Array of Single-pixel Telescopes (FAST) in both hemispheres." EPJ Web of Conferences 283 (2023): 06010. http://dx.doi.org/10.1051/epjconf/202328306010.

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The origin and nature of ultrahigh-energy cosmic rays (UHECRs) are of uppermost importance in astroparticle physics. Motivated by the need for an unprecedented aperture for further advancements, the Fluorescence detector Array of Single-pixel Telescopes (FAST) is a prospective next-generation, ground-based UHECR observatory that aims to cover an enormous area by deploying a large array of low-cost fluorescence telescopes. The full-scale FAST prototype consists of four 20 cm photomultiplier tubes at the focus of a segmented mirror 1.6 m in diameter. Three FAST prototypes have been installed at

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Morales-Hernández, Aitor, Miguel Á. Sánchez-Soriano, Stephan Marini, et al. "Enhancement of corona discharge thresholds in microstrip bandpass filters by using cover-ended resonators." International Journal of Microwave and Wireless Technologies 13, no. 7 (2021): 708–18. http://dx.doi.org/10.1017/s1759078721000532.

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AbstractThis paper studies the corona discharge power thresholds in microstrip bandpass filters (BPFs) and, in particular, is focused on a solution based on λ/2 cover-ended resonators to enhance their peak power handling capability (PPHC). First, a parametric analysis is carried out to evaluate the variation of the maximum electric field and the unloaded quality factor (Qu) as a function of the cover's geometrical dimensions (i.e. height, length, and width). Next, several microstrip BPFs centered at 1.6 GHz are designed, and their behaviors under moderate-to-high applied RF power signals are s

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Chacón-Cifuentes, Paula, Andrés Valencia-Escobar, Alejandro Zuleta-Gil, Gustavo Sevilla-Cadavid, Esteban Correa-Bedoya, and Félix Echeverría-Echeverría. "Development and testing of an allterrain wheelchair built with light magnesium alloy to improve the mobility of the rural population." Kepes 20, no. 28 (2024): 49–69. http://dx.doi.org/10.17151/kepes.2023.20.28.3.

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The objective of this work was to design and test an all-terrain wheelchair for the rural population, implementing an AZ31 magnesium alloy and a lever propulsion mechanism to reduce the effort made during mobility. Two wheelchair prototypes were evaluated under the ISO7176 standard and usability testing. To validate the fact that the wheelchair weight reduction represents a benefit, a repeated measures study was carried out to establish the effect of the material change on mobility efficiency. The tests were carried out in an academic campus in Colombia in an open space with a surface covered

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Desman, Nurul Safira, and Nurizzati Nurizzati. "Pembuatan Purwarupa Songket Pakaian Adat Silungkang di Kecamatan Silungkang Kota Sawahlunto Sumatera Barat (Studi Kasus: Pada Kerapatan Adat Nagari Silungkang Dan Kantor Disperindag Kota Sawahlunto)." Ilmu Informasi Perpustakaan dan Kearsipan 8, no. 1 (2019): 314. http://dx.doi.org/10.24036/107320-0934.

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AbstractThe process of making a Silungkang Songket prototype in Sawahlunto City uses a descriptive method with data collection techniques through interviews with traditional leaders and service offices. The process of making songket silungkang traditional clothing prototypes in Sawahlunto City is as follows: (1) data collection is done by interviewing techniques, (2) making a design in the form of a product to be made, (3) prototype making process in accordance with the work plan -the basic provisions of a topic that must be developed starting from making cover which is the hard skin on the ou

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Sylvia, Sylvia, Christiana Gracia Monica, Justin Febrianus, William Ofel Boas, Steve Mercyo, and Steven Suhardi. "PRODUCT DESIGN IMPROVEMENT AND DEVELOPMENT TRAINING FOR BAG PRODUCTS AT SME JMS LEATHER." Jurnal Sinergitas PKM & CSR 9, no. 1 (2025): 29–37. https://doi.org/10.19166/jspc.v9i1.9498.

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JMS Leather is a small medium enterprise that produces leather products such as bags, wallets, book covers and accessories. It has challenges such as the lack of unique and innovative products that are functional and aesthetic at the same time. In this community service, the lecturer and students collaborate with JMS Leather to design new products, from the identification of customer needs to the final prototype process. This process involved market analysis, in-depth interviews, customer surveys, and need-based design development. The designs are designed to be more minimalist, yet still func

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Madhavan, G. R., and D. Kannamma. "Assessment of the spatial configuration pattern in Tiruchirappalli city for energy studies through generative urban prototype models: A case for warm and humid climate." Geographica Pannonica 28, no. 3 (2024): 182–204. http://dx.doi.org/10.5937/gp28-50781.

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Developing countries with complex urban spatial configurations strive to control urbanization and its impact on energy consumption. The current study has used Tiruchirappalli city in India as a study area to demonstrate the impact on cooling energy consumption by complex urban spatial configurations. To comprehend the complexity, sixty-five urban prototypes were generated through permutation and combination using local climatic zones scheme. The image-based binary classification model was used to categorize the morphologies in the city. The study aims to investigate the cooling energy consumpt

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Vongsack, Souphanna, Chuwong Phongcharoenpanich, Sompol Kosulvit, Kazuhiko Hamamoto, and Toshio Wakabayashi. "Rectangular Ring Antenna Excited by Circular Disc Monopole for WiMAX System." International Journal of Antennas and Propagation 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/769816.

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This research presents a rectangular ring antenna excited by a circular disc monopole (CDM) mounted in front of a square reflector. The proposed antenna is designed to cover a frequency range of 2.300–5.825 GHz and thereby is suitable for WiMAX applications. Multiple parametric studies were carried out using the CST Microwave Studio simulation program. A prototype antenna was fabricated and experimented. The measurements were taken and compared with the simulation results, which indicates good agreement between both results. The prototype antenna produces an impedance bandwidth (|S11|< −10

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Nalam, Yogesh, Tobias Hauser, Philipp Peter Breese, et al. "Gas flow study for development of a novel shielding gas nozzle for directed energy deposition processes using computational fluid dynamic simulations." IOP Conference Series: Materials Science and Engineering 1135, no. 1 (2021): 012016. http://dx.doi.org/10.1088/1757-899x/1135/1/012016.

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Abstract Directed energy deposition (DED) enables the additive manufacturing of several materials such as molybdenum alloys that are very difficult to process by conventional methods. Some of these materials are highly reactive to gases in ambient atmosphere such as oxygen, and nitrogen. Oxidation during additive manufacturing significantly influences the mechanical properties of a part. In some cases, the shielding gas coverage of standard powder nozzles is not sufficient, and oxidation still takes place. A functional prototype of a compound multi flow path annular nozzle was developed using

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Abd Mutalib, Mohd Azri, Norsinnira Zainul Azlan, and Nor Mohd Haziq Norsahperi. "Quantifying and Assessing Post-Stroke Patients' Functional Capability Level for Independent Daily Activities: A Review." Journal of Advanced Research in Applied Sciences and Engineering Technology 52, no. 1 (2024): 209–33. http://dx.doi.org/10.37934/araset.52.1.209233.

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Every year, over 13.7 million stroke episodes occur worldwide, addressing the pressing need for efficient rehabilitation treatments to restore motor function in stroke patients is paramount. The escalating number of stroke cases emphasises the urgency of developing robust rehabilitation methodologies. Currently, therapists rely on subjective and manual assessments to determine subsequent patient interventions, a method fraught with challenges, including subjectivity and dependence on the therapist's experience. This paper critically reviews the quantification and assessment of post-stroke pati

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Vieten, Tobias, Dennis Stahl, Peter Schilling, Faruk Civelek, and André Zimmermann. "Feasibility Study of Soft Tooling Inserts for Injection Molding with Integrated Automated Slides." Micromachines 12, no. 7 (2021): 730. http://dx.doi.org/10.3390/mi12070730.

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The production of injection-molding prototypes, e.g., molded interconnect devices (MID) prototypes, can be costly and time-consuming due to the process-specific inability to replace durable steel tooling with quicker fabricated aluminum tooling. Instead, additively manufactured soft tooling is a solution for the production of small quantities and prototypes, but producing complex parts with, e.g., undercuts, is avoided due to the necessity of additional soft tooling components. The integration of automated soft slides into soft tooling has not yet been investigated and poses a challenge for th

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Singh, Ghanshyam, Sachin Kumar, Ajay Abrol, et al. "Frequency Reconfigurable Quad-Element MIMO Antenna with Improved Isolation for 5G Systems." Electronics 12, no. 4 (2023): 796. http://dx.doi.org/10.3390/electronics12040796.

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In this paper, a frequency reconfigurable multiband multiple-input-multiple-output (MIMO) antenna is developed for 5G communication systems. The presented MIMO antenna element consists of a 50 Ω microstrip line, a rectangular monopole divided into two patches, and a partial ground plane. A split-ring resonator (SRR) is introduced into the upper patch to cover multiple 5G application bands, and an RF PIN diode is embedded between the upper and lower patches to enable the frequency diversity feature. In order to design a MIMO antenna with improved inter-element isolation, four antenna elements a

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Tarricone, Paul. "Cover Story: Prototypes Roll On." Lighting Design + Application 40, no. 7 (2010): 36–41. https://doi.org/10.1177/036063251004000712.

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Slováček, Marek, Josef Tejc, and Mojmír Vaněk. "Using of Welding Virtual Numerical Simulation as the Technical Support for Industry." Advanced Materials Research 1138 (July 2016): 49–55. http://dx.doi.org/10.4028/www.scientific.net/amr.1138.49.

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Welding as a modern, highly efficient production technology found its position in almost all industries. At the same time the demands on the quality of the welded joints have been constantly growing in all production areas. Great demand on the quality of the welded joints consequently causes more experimental or prototype – so called – validation joints that take place before the welding of final construction. These experiments, prototypes aim at – for instance – defining the appropriate welding technology, material, pre-heating, welding parameters, clamping condition and optimizing the weldin

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Kldiashvili, M., and D. Paresashvili. "Meaning and Role of Prototyping in Entropic and Extreme Business Environment in Georgia." Fundamental and applied researches in practice of leading scientific schools 31, no. 1 (2019): 89–92. http://dx.doi.org/10.33531/farplss.2019.1.19.

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For a couple of years, the term entropy is gaining popularity as a term to cover the various dimensions of fast and rapidly developing, ‘uncontrollable’ business environment. The more complex and volatile an industry is – the higher is the level of entropy, that means - the harder to predict and therefore more uncertain will be process of new project or product implementation. In simple words, entropy as a measure of uncertainty or randomness, is permanently growing in nowadays business environment. In common use, A prototype is an early sample, model, or release of a product built to te

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Wijayanti, Asri, and Firstya Evi Dianastiti. "Pengembangan Prototipe Bahan Ajar Mata Kuliah Menyimak Berbasis Audiovisual (Prototype Development of Teaching Materials Listening to Audio-Visual Based)." JALABAHASA 15, no. 2 (2019): 173. http://dx.doi.org/10.36567/jalabahasa.v15i2.395.

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Kebutuhan bahan ajar menyimak yang dilengkapi dengan latihan dan tugas menjadi hal penting untuk mendukung kemampuan menyimak. Penelitian ini bertujuan menjelaskan kebutuhan bahan ajar menyimak berjenis audiovisual dan penyusunan prototipenya bagi mahasiswa Prodi Pendidikan Bahasa dan Sastra Indonesia. Data penelitian ini adalah bahan ajar dan desain prototipe bahan ajar menyimak yang dikumpulkan dengan metode angket. Penelitian ini berjenis research and development, yaitu mengembangkan bahan ajar berjenis audiovisual pada mata kuliah menyimak. Analisis data menggunakan teknik analisis dokumen

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Rodari Gutierrez, Germán Javier, and Luciano Agustín Oldecop. "Test plot study of a tailings stack final cover prototype." MATEC Web of Conferences 337 (2021): 04006. http://dx.doi.org/10.1051/matecconf/202133704006.

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Waste storage facilities must be protected against weathering once mining operations come to end, in order to ensure structural integrity and to avoid environmental pollution. Cover systems consisting on earthen materials layers that are placed over the wastes are a widely spread solution to fulfil such requirement. This paper presents an experimental study of a cover system intended to protect a waste storage facility study case located in the arid eastern foothills of the Central Andes range, Argentina. At the study case, filtered tailings and waste rock are stored conjunctly. Both materials

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Bartolo-Alemán, Martha Hilaria, Sarai Maria Martínez-Mendoza, Gerardo Silva-Montes, Vicente Morales-Castillo, Atalia Luna-Perez, and Luis Humberto Robledo-Taboada. "Prototype of Alternative Masks to Kn95 Mouth Covers." Journal of Basic and Applied Research International 29, no. 4 (2023): 52–62. http://dx.doi.org/10.56557/jobari/2023/v29i48455.

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Various types of materials and components have been synthesized to assemble respirator-type masks as an alternative to the (stable and durable) KN-95 face mask. Injection-type 3D printers were used to manufacture the components, where the thickness and height of the injection varied, printing time, clamping method and infill density. The morphological analysis (superficial and cross-sectional) was performed by scanning electron microscopy. The degree of filtration of the filters and the mask was determined by a physical test that simulated a human sneeze. The biological characterization was ca

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Paolicchi, Anita. "Lutheran Apocalyptic Imagery in the Orthodox Context." Arts 12, no. 3 (2023): 99. http://dx.doi.org/10.3390/arts12030099.

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Dürer’s Apocalypse was undoubtedly the prototype for the many apocalyptic representations that suddenly appeared in Central Europe by the end of the sixteenth century: the influence of Dürer’s Apocalypse extended far beyond the German borders, towards Western, Southern and Eastern countries. The Apocalypse text is extremely rich in symbols so that it could easily be enriched with additional meanings: Cranach’s reworking of Dürer’s iconographic model in the 1520s, under Luther’s personal guidance, became a key instrument of transmission of the Lutheran doctrine and anti-papal criticism. The rec

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Koseoglu, Ilknur. "The PANDA EDD prototype in Giessen Cosmic Station." Journal of Physics: Conference Series 2374, no. 1 (2022): 012010. http://dx.doi.org/10.1088/1742-6596/2374/1/012010.

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The PANDA detector at the future Facility for Antiproton and Ion Research (FAIR) is currently being constructed in Darmstadt, Germany. It contains a fixed proton target and an antiproton beam with a momentum range between 1.5 GeV/c to 15 GeV/c. Two Cherenkov detectors are used to identify charged hadrons. The Disc DIRC (EDD) covers polar angles between 5° to 22° in the endcap region. In order to test the performance of the EDD prototype, the experimental setup driven by cosmic muons was built at the JLU in Giessen. It is called the Giessen Cosmic Station (GCS) and contains four tracking boxes

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Grego, Elena, Margherita Profiti, Monica Giammarioli, et al. "Genetic Heterogeneity of Small Ruminant Lentiviruses Involves Immunodominant Epitope of Capsid Antigen and Affects Sensitivity of Single-Strain-Based Immunoassay." Clinical and Vaccine Immunology 9, no. 4 (2002): 828–32. http://dx.doi.org/10.1128/cdli.9.4.828-832.2002.

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ABSTRACT The pol and gag gene fragments of small ruminant lentivirus field isolates collected in the last decade in Italy were amplified, sequenced, and analyzed. Phylogenetic analysis revealed that the majority of ovine isolates form a distinct cluster more similar to caprine lentivirus prototypes than to the visna virus prototype. These findings confirm and extend those reported by Leroux et al. (Arch. Virol., 142:1125-1137, 1997). Moreover, we observed that a variable region of Gag, included in the fragment analyzed, corresponded to one of the three major capsid antigen epitopes, which sugg

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Zieja, Mirosław, and Joanna Wójcik. "Artificial Neural Networks as Applied to Aircraft Flight Test Planning / Wykorzystanie Sztucznych Sieci Neuronowych W Planowaniu Badań W Locie." Journal of KONBiN 21, no. 1 (2012): 149–62. http://dx.doi.org/10.2478/jok-2013-0014.

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Abstract Any flight test programme is essentially based on a flight test plan, i.e. a document agreed upon and accepted by all the parties interested in the tests, and authorised by the superior body/authorities responsible for the execution of the tests. The flight test plan determines the number of flights and flight hours indispensable to verify whether a given aircraft satisfies specified requirements. Many and various external factors may have significant and adverse effect on the execution of the flight test program according to the earlier agreed schedule. The study also covers the stru

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Sari, Ani Oktarini, and Ishak Kholil. "Prototype Aplikasi SI-Warga Sebagai Penunjang Administrasi Surat Pengantar dan Iuran Warga pada Rukun Tetangga." Infotek : Jurnal Informatika dan Teknologi 5, no. 2 (2022): 307–15. http://dx.doi.org/10.29408/jit.v5i2.5897.

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The use of information technology to support administrative activities in the neighborhood makes it easier for administrators to provide administrative services for community members. The service of making rt cover letters and paying residents' mandatory contributions at RT08 / RW10 Perum Ambar Cibinong Residence Bogor still uses conventional methods, namely by recording manually. This process is considered inefficient in the process of waiting for the process of checking and making letters. And for the payment process that is still carried out by paying directly to the public relations and th

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Zhu, Hou Yao, Chun Liang Zhang, and Wu Xin Wang. "Optimization of Refrigerator Door Structure Based on ABAQUS." Applied Mechanics and Materials 226-228 (November 2012): 807–11. http://dx.doi.org/10.4028/www.scientific.net/amm.226-228.807.

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The refrigerator door cover deformation or cracking is a major flaw in the BCD268 refrigerator. In this paper we create a simplified model of the refrigerator door. Based on the standard modules of ABAQUS finite element analysis software, this paper analyzed the deformation mechanism of the refrigerator door, and determined the parts of the deformation. Aiming at the deformation and cracking, the numerical simulation of BCD 268 door cover was conducted, and two kinds of different options to strengthen the ribs were proposed, then the two programs were carried out through finite element analysi

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Méndez-Gómez, Dalia Danely, Arturo Minor-Martínez, Salvador Montoya-Alvarez, Fernando Pérez-Escamirosa, and Jessica Cantillo-Negrete. "Prototype of a Spring-Loaded Module for Axillary Crutches." Sensors 25, no. 2 (2025): 296. https://doi.org/10.3390/s25020296.

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Axillary crutches assist people with lower limb injuries but can lead to upper limb strain with extended use. Spring-loaded crutches offer a potential solution, yet they are rarely tested in clinical settings. This study developed spring-loaded crutches with an integrated force-measuring system to analyze gait dynamics. Three prototypes, each with different spring constants (k), were tested. To measure ground reaction force (GRF), a Nylamid cover was around the crutch stem. Two participants with different weights completed a 15-m route using both the designed spring-loaded and standard crutche

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Tanwin, Suwandy, and Rosliani Rosliani. "The Development of Indonesian Language Teaching Materials for Beginner Level of Foreign Speakers with Local Content." Budapest International Research and Critics in Linguistics and Education (BirLE) Journal 3, no. 3 (2020): 1600–1613. http://dx.doi.org/10.33258/birle.v3i3.1250.

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This research is motivated by the scarcity of Bahan Ajar Bahasa Indonesia Untuk Penutur Asing (BIPA), especially cultural-charged teaching materials. Therefore, the development of BIPA teaching materials is needed. The problems examined in this study are (1) how the process of developing BIPA teaching materials containing Batak culture for beginner-level foreign speakers, (2) how the final results of the development of BIPA-charged Batak culture materials for beginner-level foreign speakers, (3) how the materials are feasible BIPA teaching contains Batak culture for beginner-level foreign spea

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Kaddoura, Mohamad, Johan Tivander, and Sverker Molander. "Life Cycle Assessment of Electricity Generation from an Array of Subsea Tidal Kite Prototypes." Energies 13, no. 2 (2020): 456. http://dx.doi.org/10.3390/en13020456.

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Tidal current technologies have the potential to provide highly predictable energy, since tides are driven by lunar cycles. However, before implementing such technologies on a large scale, their environmental performance should be assessed. In this study, a prospective life cycle assessment (LCA) was performed on a 12 MW tidal energy converter array of Minesto Deep Green 500 (DG500) prototypes, closely following the Environmental Product Declaration (EPD) standards, but including scenarios to cover various design possibilities. The global warming potential (GWP) of the prototype array was in t

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Liang, Fupeng, An Ju, Yi Qiao, et al. "A simple approach for an optically transparent nanochannel device prototype." Lab on a Chip 16, no. 6 (2016): 984–91. http://dx.doi.org/10.1039/c6lc00152a.

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Acharjee, Juin, Jawad Ali, Muhammad Uzair, et al. "Metasurface-Loaded Biodegradable Mobile Phone Back Cover for Enhanced Radiation Performance." Materials 18, no. 4 (2025): 730. https://doi.org/10.3390/ma18040730.

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This article introduces a novel biodegradable metasurface-loaded mobile phone back cover designed to reduce electromagnetic exposure and enhance antenna performance. The cover operates across the low GHz band (2–8 GHz) and the millimeter-wave band (22–25.6 GHz), utilizing polylactic acid as an eco-friendly substrate. Integrated with a six-port multiple-input multiple-output (MIMO) antenna system, the cover achieves port isolation above 20 dB in both bands. Specific absorption rate (SAR) analysis, performed using a human head model, shows significant reductions in electromagnetic exposure—61.1%

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