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Topic Review
Dynamic Packet Duplication for Industrial URLLC
The fifth-generation (5G) network is presented as one of the main options for Industry 4.0 connectivity. To comply with critical messages, 5G offers the Ultra-Reliable and Low latency Communications (URLLC) service category with a millisecond end-to-end delay and reduced probability of failure. There are several approaches to achieve these requirements; however, these come at a cost in terms of redundancy, particularly the solutions based on multi-connectivity, such as Packet Duplication (PD). Specifically, this entry proposes a Machine Learning (ML) method to predict whether PD is required at a specific data transmission to successfully send a URLLC message. This entry is focused on reducing the resource usage with respect to pure static PD. 
  • 1.7K
  • 25 Jan 2022
Topic Review
Comparison between Traditional (Passive) Learning and Active Learning
Active learning has been increasingly important in tertiary education due to its powerfully favourable impact on students’ learning attitudes and efficacy. The way that a classroom is set up has a direct impact on how well students learn and how well teachers teach. The continuous evaluation of students’ learning performance is essential for guiding future classroom renovations and creating a cutting-edge learning environment for both students and teachers.
  • 1.7K
  • 20 Jun 2023
Topic Review
Quad Flat Package
A QFP or Quad Flat Package is a surface-mounted integrated circuit package with "gull wing" leads extending from each of the four sides. Socketing such packages is rare and through-hole mounting is not possible. Versions ranging from 32 to 304 pins with a pitch ranging from 0.4 to 1.0 mm are common. Other special variants include low-profile QFP (LQFP) and thin QFP (TQFP). The QFP component package type became common in Europe and United States during the early nineties, even though it has been used in Japan ese consumer electronics since the seventies. It is often mixed with hole mounted, and sometimes socketed, components on the same printed circuit board. A package related to QFP is PLCC which is similar but has pins with larger pitch, 1.27 mm (or 1/20 inch), curved up underneath a thicker body to simplify socketing (soldering is also possible). It is commonly used for NOR flash memories and other programmable components.
  • 1.7K
  • 29 Nov 2022
Topic Review
Green Production from BSFL
The purpose of this entry is to reveal the lipid and protein contents in black soldier fly larvae (BSFL) for the sustainable production of protein and energy sources. It has been observed from studies in the literature that the larval lipid and protein contents vary with the rearing conditions as well as the downstream processing employed. The homogenous, heterogenous and microbial-treated substrates via fermentation are used to rear BSFL and are compared in this review for the simultaneous production of larval protein and biodiesel. Moreover, the best moisture content and the aeration rate of larval feeding substrates are also reported in this review to enhance the growth of BSFL. As the downstream process after harvesting starts with larval inactivation, various related methods have also been reviewed in relation to its impact on the quality/quantity of larval protein and lipids. Subsequently, the other downstream processes, namely, extraction and transesterification to biodiesel, are finally epitomized from the literature to provide a comprehensive review for the production of unconventional protein and lipid sources from BSFL feedstock. Incontrovertibly, the review accentuates the great potential use of BSFL biomass as a green source of protein and lipids for energy production in the form of biodiesel. The traditional protein and energy sources, preponderantly fishmeal, are unsustainable naturally, pressingly calling for immediate substitutions to cater for the rising demands. Accordingly, this review stresses the benefits of using BSFL biomass in detailing its production from upstream all the way to downstream processes which are green and economical at the same time.
  • 1.7K
  • 09 Sep 2020
Topic Review
Lugnut (Transformers)
Lugnut is the name of several fictional characters from the Transformers universe. Both are Decepticon jets who are loyal to Megatron.
  • 1.7K
  • 18 Nov 2022
Topic Review
Circular-economy in the Built Environment
       The circular economy in the building sector is an approach aiming at minimizing waste and emissions, as well as closing water, energy, and material loops. Under a circular built environment, landfilling is no longer an option to handle construction and demolition waste, and design for disassembly has a central role. Design for disassembly is a concept in which buildings and products are designed intentionally for material recovery, value retention, and meaningful next use.
  • 1.7K
  • 12 Oct 2020
Topic Review Peer Reviewed
Silicon Micro-Strip Detectors
Silicon micro-strip detectors are fundamental tools for the high energy physics. Each detector is formed by a large set of parallel narrow strips of special surface treatments (diode junctions) on a slab of very high quality silicon crystals. Their development and use required a large amount of work and research. A very synthetic view is given of these important components and of their applications. Some details are devoted to the basic subject of the track reconstruction in silicon strip trackers. Recent demonstrations substantially modified the usual understanding of this argument.
  • 1.7K
  • 18 Apr 2022
Topic Review
Barriers of Circular Economy in Construction Industry
To facilitate the adoption of the circular economy (CE) in the architecture, engineering and construction (AEC) sector, some authors have demonstrated the potential of recent designs that take into account the sustainable management of an asset’s end-of-life (EOL), providing an alternative to the dominant designs that end with demolition. Eighteen approaches related to prefabrication, design for change, design for deconstruction, reverse logistics, waste management and closed-loop systems were found. Researchers has assessed the barriers to those 18 approaches identified in the literature.
  • 1.7K
  • 07 Dec 2021
Topic Review Peer Reviewed
Cottage Culture in Finland: Development and Perspectives
This entry provides an understanding of the past, present, and future of the Finnish cottage culture to create an overall picture of its development trajectory and its terminology, e.g., villa, in this context denoting a second home. Convenient, ready-made solutions, easy maintenance, a high level of equipment, year-round use, location, and modern and simple architectural styles are important selection criteria for (summer) cottages that belonged only to the wealthy bourgeois class in the 19th century and have taken their present form with a major transformation in Finland since then. Additionally, municipal regulations and increased attention to ecological concerns are other important issues regarding the cottage today. Cottage inheritance has changed over the generations, and the tightening of building regulations and increased environmental awareness are key drivers of the future transformation of cottage culture. Moreover, the increasing demand for single-family and outdoor spaces created by social changes such as remote working, which has become widespread with the COVID-19 pandemic, will make the summer cottage lifestyle even more popular in Finland. It is thought that this entry will contribute to the continuance of the Finnish cottage culture, which is essential for the vitality of countryside municipalities, local development, national culture, and the well-being of Finnish people. 
  • 1.7K
  • 14 Apr 2022
Topic Review
“Singing” Multilayer Ceramic Capacitors and Mitigation Methods
Multilayer Ceramic Capacitors (MLCC) have a major role in modern electronic devices due to their small price and size, large range of capacitance, small ESL and ESR, and good frequency response. Unfortunately, the main dielectric material used for MLCCs, Barium Titanate, makes the capacitors vibrate due to the piezoelectric and electrostrictive effects. This vibration is transferred to the PCB, making it resonate in the audible range of 20 Hz–20 kHz, and in this way the singing capacitors phenomenon occurs. This phenomenon is usually measured with a microphone, to measure the sound pressure level, or with a Laser Doppler Vibrometer (LDV), to measure the vibration. Besides this, other methods are mentioned in the literature, for example, the optical fiber and the active excitation method. There are several solutions to attenuate or even eliminate the acoustic noise caused by MLCC. Specially designed capacitors for low acoustic levels and different layout geometries are only two options found in the literature. To prevent the singing capacitor phenomenon, different simulations can be performed, the harmonic analysis being the most popular technique. 
  • 1.7K
  • 06 Jun 2022
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