scholarly journals Transceivers for low-cost Gigabit end-user fibre links

III-Vs Review ◽  
2001 ◽  
Vol 14 (3) ◽  
pp. 28
Keyword(s):  
Low Cost ◽  
2018 ◽  
Vol 7 (3.27) ◽  
pp. 318
Author(s):  
K Kalaiselvi ◽  
N Jayashri ◽  
G Saraswathi

Cloud computing providing confidentiality over the insensitive data was the major issue related to security. It verifies the data owned by the server through linear computations. The proposed work enables security and efficiency using the cryptographic techniques of hybrid algorithms, securing the sensitive information that is present in the cloud. In the hybrid algorithm, it is the combination of problem encryption, key generation, result decryption and proof generation. It also validates the results which are being computed and also provides end-to-end confidentiality over the data to both the end user. The uses of hybrid algorithm results in a random key generation, encrypt/decrypt, and validate the satisfied results. This will provide a low cost to both server and client.  


Author(s):  
Mustapha Chaker ◽  
Cyrus B. Meher-Homji

There are numerous gas turbine applications in power generation and mechanical drive service where power drop during the periods of high ambient temperature has a very detrimental effect on the production of power or process throughput. Several geographical locations experience very high temperatures with low coincident relative humidities. In such cases media evaporative cooling can be effectively applied as a low cost power augmentation technique. Several misconceptions exist regarding their applicability to evaporative cooling, the most prevalent being that they can only be applied in extremely dry regions. This paper provides a detailed treatment of media evaporative cooling, discussing aspects that would be of value to an end user, including selection of climatic design points, constructional features of evaporative coolers, thermodynamic aspects of its effect on gas turbines, and approaches to improve reliability. It is hoped that this paper will be of value to plant designers, engineering companies, and operating companies that are considering the use of media evaporative cooling.


2020 ◽  
Vol 10 (4) ◽  
pp. 567-583
Author(s):  
Arinola Adefila ◽  
Amal Abuzeinab ◽  
Timothy Whitehead ◽  
Muyiwa Oyinlola

PurposeThis paper develops a novel user-acceptance model for circular solutions to housing design. The model has been systematically developed from a case study of an upcycled plastic bottle building in a low-income community in Nigeria. It is common practice to use participatory approaches to consult end users in communities, typically after design concepts have been proposed and conceptualised. However, this often leads to critical socio-cultural or usability elements being overlooked and the design being substandard. Therefore, this paper develops a robust model for designers, specialists and activists involved in construction that can be used during all phases of a project. This approach demonstrates that user needs should be considered before building designs and plans are generated, providing a greater frame of reference for practitioners, consultants and end users. Enabling the integration of holistic needs of the community and the development of circular design solution.Design/methodology/approachA case study methodology has been employed to develop this model, uses appreciative inquiry methodology. This includes multiple methods to capture end users’ perception: focus groups, interactions with the local community and self-recorded comments. This case study is part of a broader research project to develop replicable low-cost self-sufficient homes utilising local capacity using upcycled, locally available materials.FindingsThe findings identify the challenges associated with designing circular solution housing without a robust understanding of interrelated factors, which ensure sustainability and user acceptance. The conclusions demonstrate why essential socio-cultural factors, usually unrelated to technical development, should be understood and contextualised when designing sustainable solutions in low/middle-income communities. The authors argue that without this holistic approach, undesirable consequences may arise, often leading to more significant challenges. Instead of referring to multiple frameworks, this distinctive model can be used to evaluate user acceptance for low-cost housing in particular and other dimensions of circular solution design that involve end-user acceptance. The model blends circular solution dimensions with user-acceptance concerns offering a guide that considers essential features that are both user-friendly and pragmatic, such as utility, technological innovation and functionality as well as their intersectionality.Research limitations/implicationsThe research relied on a single case study, which focussed on end-user engagement of upcycling waste materials as an application of circular solutions. The model will contribute to developing socially accepted circular solutions taking into consideration local context factors.Originality/valueThe paper is proposing a model for user acceptance of circular construction materials relevant to low- and middle-income countries (LMICs).


Author(s):  
Alexander Y. Yap ◽  
Wonhi Synn

This chapter focuses on the theme of service innovation in the electronic brokerage sector. The discussion will cover the theories of “technology bundling” and how bundling together various technologies creates added value for the end-user. The proliferation of different e-trading systems raises the question of which systems provide better and more comprehensive bundled services to online stock traders. Many online brokers now provide low-cost transactions and financial research capabilities, so where is the next level of innovation? The objective of this chapter is to show that several innovations in broker e-services are critical in the following areas: a) how order processes are efficiently managed in financial e-markets; b) how responsive e-trading systems are in handling trading rules and regulations; c) how different systems address unique niches in financial e-markets; and d) improving systems stability and reliability. Combining different systems and technology features in these areas allow brokers to give much better services to their clients.


Author(s):  
Mustapha Chaker ◽  
Cyrus B. Meher-Homji

There are numerous gas turbine applications in power generation and mechanical drive service where power drop during the periods of high ambient temperature has a very detrimental effect on the production of power or process throughput. Several geographical locations experience very high temperatures with low coincident relative humidities. In such cases media evaporative cooling can be effectively applied as a low cost power augmentation technique. Several misconceptions exist regarding their applicability of evaporative cooling the most prevalent being that they can only be applied in extremely dry regions. This paper provides a detailed treatment of media evaporative cooling, discussing aspects that would be of value to an end user including selection of climatic design points, constructional features of evaporative coolers, thermodynamic aspects of its effect on gas turbines and approaches to improve reliability. It is hoped that this paper will be of value to plant designers, engineering companies and operating companies that are considering the use of media evaporative cooling.


Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1329
Author(s):  
Luca Davoli ◽  
Ioannis Paraskevopoulos ◽  
Cinzia Campanella ◽  
Stefano Bauro ◽  
Tommaso Vio ◽  
...  

One of the sectors that is expected to significantly benefit from 5G network deployment is eXtended Reality (XR). Besides the very high bandwidth, reliability, and Quality of Service (QoS) to be delivered to end users, XR also requires accurate environmental perception for safety reasons: this is fundamental when a user, wearing XR equipment, is immersed in a “virtual” world, but moves in a “real” environment. To overcome this limitation (especially when using low-cost XR equipments, such as cardboards worn by the end user), it is possible to exploit the potentialities offered by Internet of Things (IoT) nodes with sensing/actuating capabilities. In this paper, we rely on ultrasonic sensor-based IoT systems to perceive the surrounding environment and to provide “side information” to XR systems, then performing a preliminary experimental characterization campaign with different ultrasonic IoT system configurations worn by the end user. The combination of the information flows associated with XR and IoT components is enabled by 5G technology. An illustrative experimental scenario, relative to a “Tourism 4.0” IoT-aided VR application deployed by Vodafone in Milan, Italy, is presented.


Electronics ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 21
Author(s):  
Tiago Custódio ◽  
Cristiano Alves ◽  
Pedro Silva ◽  
Jorge Silva ◽  
Carlos Rodrigues ◽  
...  

The current design paradigm of car cabin components assumes seats aligned with the driving direction. All passengers are aligned with the driver that, until recently, was the only element in charge of controlling the vehicle. The new paradigm of self-driving cars eliminates several of those requirements, releasing the driver from control duties and creating new opportunities for entertaining the passengers during the trip. This creates the need for controlling functionalities that must be closer to each user, namely on the seat. This work proposes the use of low-cost capacitive touch sensors for controlling car functions, multimedia controls, seat orientation, door windows, and others. In the current work, we have reached a proof of concept that is functional, as shown for several cabin functionalities. The proposed concept can be adopted by current car manufacturers without changing the automobile construction pipeline. It is flexible and can adopt a variety of new functionalities, mostly software-based, added by the manufacturer, or customized by the end-user. Moreover, the newly proposed technology uses a smaller number of plastic parts for producing the component, which implies savings in terms of production cost and energy, while increasing the life cycle of the component.


2021 ◽  
Vol 3 (3) ◽  
Author(s):  
Uttam U. Deshpande ◽  
Aditya Barale ◽  
V. S. Malemath

The prime reason for proposing the work is designing and developing a low-cost guided wireless Unmanned Ground Vehicle (UGV) for use in hospitals for assistance in contactless drug delivery in COVID-19 wards. The Robot is designed as per the requirements and technical specifications required for the healthcare facility. After a detailed survey and tests of various mechanisms for steering and structure of UGV, the best mechanism preferred for steering articulated and for body structure is hexagonal as this approach provides decent performance and stability required to achieve the objective. The UGV has multiple sensors onboard, such as a Camera, GPS module, Hydrogen, and Carbon Gas sensor, Raindrop sensor, and an ultrasonic range finder on UGV for the end-user to understand the circumferential environment and status of UGV. The data and control options are displayed on any phone or computer present in the Wi-Fi zones only if the user login is validated. ESP-32 microcontroller is the prime component utilized to establish reliable wireless communication between the user and UGV.These days, the demand for robot vehicles in hospitals has increased rapidly due to pandemic outbreaks as using this makes a contactless delivery of the medicinal drug. These systems are designed specifically to assist humans in the current situation where life can be at risk for healthcare facilities. In addition, the robot vehicle is suitable for many other applications like supervision, sanitization, carrying medicines and medical equipment for delivery, delivery of food and used dishes, laundry, garbage, laboratory samples, and additional supply.


2021 ◽  
Author(s):  
Eric Charpentier ◽  
Marine Cornec ◽  
Solenne Dumont ◽  
Dimitri Meistermann ◽  
Philippe Bordron ◽  
...  

Abstract 3’seq-RNA Profiling (3’SRP) approach is based on multiplexing samples and molecular indexing mRNA in order to drive genome-wide transcriptional profiling at reasonable cost in comparison to standard RNA-sequencing. The protocol is performed according to the 3′-digital gene expression (3′-DGE) approach developed by the Broad institute. The libraries are prepared from small amounts of total RNA where the mRNA poly(A) tails are tagged with universal adapters, well-specific barcodes and unique molecular identifiers (UMIs). We have improved the fragmentation step by implementing tagmentation based on the activity of a bead-linked transposome. This technique allows sample multiplexing on 96-well plates. Libraries are then sequenced using standard procedures, e.g. on Hiseq2500 or NovaSeq 6000 SP Flow Cells. We have developed a snakemake pipeline including every analysis step from raw fastq de-multiplexing to functional annotation of the differentially expressed genes, producing a complete HTML report for end-user.


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