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Topic Review
Freight Bicycle
Freight bicycles, carrier cycles, freight tricycles, cargo bikes, box bikes, or cycletrucks are human powered vehicles designed and constructed specifically for transporting loads. Vehicle designs include a cargo area consisting of an open or enclosed box, a flat platform, or a wire basket, usually mounted over one or both wheels, low behind the front wheel, or between parallel wheels at either the front or rear of the vehicle. The frame and drivetrain must be constructed to handle loads larger than those on an ordinary bicycle.
  • 1.4K
  • 03 Jan 2023
Topic Review
Freight Distribution in Small Islands
Freight transportation in urban areas represents an essential activity from the standpoint of economic development; the spread of e-commerce (also accelerated by COVID-19) has contributed to increasing the demand for freight distribution over short distances. In most cities, the approaches and measures are often based on new technologies. This research tackles this topic, formulating and solving a distribution problem by linking shipping services with last-mile distribution operated by means of automatic delivery service (parcel lockers). The results show that such a type of service could reduce the user’s waiting time when compared to traditional home deliveries.
  • 432
  • 26 May 2023
Topic Review
French Cruiser Colbert (1928)
Colbert was the second of four Suffren class cruisers built for the French Navy. During the interwar period she served in the Mediterranean. In 1935 she underwent a major refit at Lorient before joining the International Patrol off the Spanish south coast during the Spanish Civil War. In 1939 she was in Oran moving to Toulon in January 1940. She partook in the bombardment of Genoa in mid-June. She was in Toulon at the time of the French Armistice. She underwent a refit in 1941 to augment her light anti-aircraft guns then was placed in care and maintenance at Toulon. She was scuttled at Toulon when the Germans attempted to seize the French Fleet at the end of November 1942. She was raised and scrapped post war in 1948. She was named in honour of Jean-Baptiste Colbert (1619–1683), the Controller General of Finances under King Louis XIV from 1665 to 1683. He was responsible for bringing France out of bankruptcy, restoring the financial health of France and laying the foundation of the French Navy including bases and the training of the officers and men.
  • 478
  • 23 Nov 2022
Topic Review
French Cruiser Dupleix (1930)
Dupleix was the fourth unit of the Suffren class. She entered service in 1933 and spent the interwar period in the Mediterranean. She participated in the International Patrol during the Spanish Civil War. September 1939 found her still in Toulon. She participated in the search for the Graf Spee in the Atlantic before returning to Toulon. The only time she fired her guns in anger was during the bombardment of Vado, Italy in mid-June 1940. She was at Toulon at the time of the Franco-German Armistice in June 1940. She remained at Toulon until the French Fleet there was scuttled in late November 1942. She was subsequently raised by the Italians in 1943. She was named in honour of Joseph François, Marquis Dupleix (1697 - 1763) a French trader in the service of La Compagnie des Indes. He travelled between North America and India. He was appointed Governor-General of French India in 1742. A post he held until his death in 1763.
  • 325
  • 07 Nov 2022
Topic Review
French Cruiser Foch
Foch was the third unit of the Suffren class. She entered service in 1931 and spent the interwar period in the Mediterranean. September 1939 found her still in Toulon. She participated in the search for the Graf Spee in the Atlantic before returning to Toulon. The only time she fired her guns in anger was during the bombardment of Vado, Italy in mid-June 1940. She was at Toulon at the time of the Franco-German Armistice in June 1940. She remained at Toulon until the French Fleet there was scuttled in late November 1942. She was subsequently raised by the Italians who scrapped her in 1943-44. She was originally to be named Lavois after the Marquis de Lavois, the Minister of War under King Louis XIV. However, Marshall Ferdinand Foch, France's most famous soldier during the First World War died on 29 March 1929 one month before her launch. She was then renamed Foch in his honour. The main gun turrets were named after places that were associated with Marshall Foch during the Great War.
  • 332
  • 01 Nov 2022
Topic Review
Frequency Control and Virtual Inertia Emulation
Integrating renewable energy through inverter-based generators has decreased the power system’s inertia. Reduced inertia may lead to frequency instability during power imbalance disturbances, particularly in an isolated power system with limited inertia. The Battery Energy Storage System (BESS) and a virtual inertia (VI) emulation control system have become popular to mitigate this issue. Nonetheless, the BESS utilization for VI emulation is highly dependent on the availability of BESS capacity, which may affect the energy cost. Therefore, developing a VI emulation control strategy that requires less energy and can recover the state of charge (SoC) to a desired level to optimize BESS utilization is required.
  • 489
  • 07 Aug 2023
Topic Review
Frequency Multipliers for Terahertz Remote Sensing System
Terahertz (THz) electromagnetic waves have frequencies in the range of 0.1 THz to 10 THz, with corresponding wavelengths of 3 mm to 30 μm. This frequency range is adjacent to millimeter-wave electromagnetic frequencies and infrared light wavelengths, and is thereby associated with the engineering domain of both electromagnetics and photonics. Due to insufficient development and utilization, this frequency is often referred to as a “terahertz gap”. Terahertz-wave technologies have unique properties that include a large-magnitude skin depth, good directivity, wide bandwidth and high imaging resolution. Therefore, terahertz-wave technologies possess an unparalleled advantage for remote sensing applications.
  • 1.3K
  • 07 Jun 2022
Topic Review
Frequency Up-Conversion for Vibration Energy Harvesting
Energy harvesting technology renders a solution of powering small electronics by harnessing energy from ambient energy sources, such as solar, radio frequency (RF), thermal, and vibration. The rapid development of micro-electronic and micro-electromechanical systems (MEMS) has dramatically reduced the power supply demand. For example, the power consumption of some up-to-date embedded micro-controllers in ultra-low-power mode has been reduced to about 30–250 nW. Therefore, employing energy harvesting technology to provide a sustainable power supply has become possible in a wide range of applications, including wireless remote sensors for structural health monitoring, implanted sensors for medical devices, etc.
  • 684
  • 12 Apr 2022
Topic Review
Frequency-Dependent Adaptive Noise Cancellation-Based Tracking Controller
Frequency-dependent adaptive noise cancellation-based tracking controller (ANC-TC) is a known technique for the stabilization of several nonlinear dynamical systems. This control strategy has been introduced and applied for the stabilization of a flexible rotor supported on full-lubricated journal bearings. 
  • 314
  • 29 Jun 2022
Topic Review
Fresh Fish Preservation
Fresh fish is a highly perishable food characterized by a short shelf-life, and for this reason, it must be properly handled and stored to slow down its deterioration and to ensure microbial safety and marketable shelf-life. Modern consumers seek fresh-like, minimally processed foods due to the raising concerns regarding the use of preservatives in foods, as is the case of fresh fish. Given this, emergent preservation techniques are being evaluated as a complement or even replacement of conventional preservation methodologies, to assure food safety and extend shelf-life without compromising food safety.
  • 2.4K
  • 05 May 2021
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