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Presents the problem of unemployment in the U.S. that has taken a form of a giant monster with the advent of the age of electricity. Dawn of the new environment of the Power age with the eclipse of the Machine age; Replacement of steam hoists run by the workers to the electric mine elevators because of the obvious advantages in safety, speed and better control; Eruption of problems in various industries like the paper industry as workers got maimed by the hot rolls and gnawing gears.

The article discusses a study headed by research institute Hjalmar Granberg of Innventia which revealed the potential of paper to store electricity.

Abstract: In this paper we provide an alternative constructive definition for the Dirichlet process which generalizes the one given by Sethuraman. [Copyright &y& Elsevier]

The article presents the electrical paper material, which possesses the capability of storing electricity, created by Swedish scientists.

This document is a practice question paper for CBSE Exams on the topic of Current Electricity. It contains 33 questions divided into five sections, covering various topics related to current electricity such as current flow, resistance, circuit analysis, and drift velocity. The document also provides values of physical constants that can be used in the questions. [Extracted from the article]

The article reports on the move of the government in Ontario to offer rebates to northern pulp and paper mills through its Northern Pulp and Paper Electricity Transition program. The move aims to help the companies achieve energy efficiency and sustainability by reducing their electricity cost by 15 percent over the next three years. Moreover, the program is the latest in many programs by the government to help the Canadian forestry industry.

This newsletter on development projects in developing nations include the following major articles: (1) "An Insider's Perspective: Dr. Henry Cassirer Talks to DCR about Development Communication and Unesco"; (2) "Comic Books Carry Health Messages to Rural Children in Honduras," by Oscar Vigano; (3) "Computers Come to the Aid of Planners: New Software Package Available," by Judy Brace; (4) "Radio Improving Status of Women in Nepal," by Kathleen Goodman and Mana Wagley; (5) "Social Marketing Strategies for Diarrheal Disease Control Programs--PAHO 'Communications for Health' Workshop," by Ann Jimerson and Michael McQuestion; (6) "South Pacific Islanders Use Satellites in Nutrition Communication," by Gloria Renda and Brian Riordan; (7) "Breaking the Cycle," by Jacques Dupont; (8)"The 'Dirty Power' Problems" (about unstable electrical power) by Gary Garriott; (9) "Using Audiocassettes in Distance Education," by Jo Bradley; and (10) "Foreign Television by Satellite Enhances Language Studies in U.S.A.," by Victor Aulestia. Reviews of recent publications and of ERIC documents, as well as development-related conference announcements are included. (LMM)

The article discusses the paper titled "The Value of Aggregators in Electricity Systems" related to adoption of distributed energy resources (DERs); and discusses categories of value such as fundamental value intrinsic to aggregation and independent of the market.

Recently, there has been significant interest in convex relaxations of the optimal power flow (OPF) problem. A semidefinite programming (SDP) relaxation globally solves many OPF problems. However, there exist practical problems for which the SDP relaxation fails to yield the global solution. Conditions for the success or failure of the SDP relaxation are valuable for determining whether the relaxation is appropriate for a given OPF problem. To move beyond existing conditions, which only apply to a limited class of problems, a typical conjecture is that failure of the SDP relaxation can be related to physical characteristics of the system. By presenting an example OPF problem with two equivalent formulations, this paper demonstrates that physically based conditions cannot universally explain algorithm behavior. The SDP relaxation fails for one formulation but succeeds in finding the global solution to the other formulation. Since these formulations represent the same system, success (or otherwise) of the SDP relaxation must involve factors beyond just the network physics. The lack of universal physical conditions for success of the SDP relaxation motivates the development of tighter convex relaxations capable of solving a broader class of problems. Tools from polynomial optimization theory provide a means of developing tighter relaxations. This paper uses the example problem to illustrate relaxations from the Lasserre hierarchy for polynomial optimization and a related “mixed semidefinite/second-order cone programming” hierarchy. [ABSTRACT FROM AUTHOR]

The article discusses the problems encountered when using printers. When paper jams happens, one is advised to wait for the fuser to cool off, and open all the ways leading to the paper path and carefully pull out sheets and scraps. When a task of a printer appears to block all other behind it, there is a need to check the print queue to determine the task that caused it. Moreover, one must turn off the printer, check the paper path and remove the sheets stuck in midprint when power loss occurs in the middle of a print job. It is noted that the print job must be canceled when one uses the wrong side of photo paper.

The article presents measures to reduce, reuse and recycle products and methods of greeting and gifting friends and family while reconnecting them on Christmas and Thanksgiving Day. It suggests sending digital cards instead of paper cards, using recycled tissue paper or newsprint in place of commercial gift wrap, and skipping ribbons and bows. Also advised are meals for serving family and friends on special occasions such as one-pot means, setting up a smart trash system, and serving tap water.

Purpose – The purpose of this paper is to show the limitation of current physical components (CPC) concept in a practical application. Design/methodology/approach – The study proposes using the sum of active and scattered currents in the compensation procedure of the reactive current according to Czarnecki's concept as well as in scattered current elimination, to get the optimal energy transfer from the source supply to the load. Findings – The results show that CPC concept can be apply only when supply circuit voltage does not consist of interharmonics or/and subharmonics. It can also be shown that elimination of particular harmonics of the scatter current cannot be applied in practice due to the change of active power in the circuit. Only complete elimination of scatter current, e.g. by an active filter is possible without any change of active power. Practical implications – The paper provides new information about CPC practical implementation. Originality/value – This paper presents new features of CPC concept. [ABSTRACT FROM AUTHOR]

The article reports on the claim of a German team that they will launch printable batteries that pattern organic semiconductors on a paper-thin, flexible substrates, in 2010. According to the article, scientists at the Fraunhofer Research Institution for Electronic Nano Systems worked with colleagues from Chemnitz University of Technology and Menippos GmbH on the development of the product. It notes that the batteries use zinc anodes and manganese cathodes that react to give electricity.

The article provides information on the ability of photovoltaic cells to convert energy to usable electricity. A photovoltaic cell is created by sandwiching two silicon wafers, an n-type layer and a p-type layer. According to the article, photons from the sun pass through the cell's n-type layer, striking atoms in the p-type layer and dislodging some of those atoms' electrons in the process. The freed electrons move up forward the n-layer to create an electrical current that can be stored or service an electrical device.

In this paper, a complete theory of the power behavior of one-ports under periodic multi-sinusoidal linear operation is presented. It is based on a time-domain vector space approach in two steps. First, the one-port instantaneous current is decomposed into four orthogonal currents. Second, their power counterparts (absolute powers) are defined as products of norms. Hence, vector and scalar expressions for the absolute powers in the frequency domain are derived both in terms of voltage and current root mean square (rms)-phasor vectors and in terms of the voltage rms-phasor vector and of the multi-frequency admittance matrix. Finally, the hyper-power, a quantity consisting of a scalar/matrix pair, is devised. Like the well-known complex power, the hyperpower condenses all power information and obeys the usual conservation laws. [ABSTRACT FROM AUTHOR]

This paper proposes a bus architecture which improves the performance and/or power dissipation of online buses. The proposed architecture reduces the delay on alternate lines by lowering the threshold voltage of its devices. Furthermore, the shifting of the signal switching on adjacent lines reduces the worst case coupling capacitance. Two implementations of this bus architecture are proposed, the alternate-Vt and the alternate forward body biased schemes, and are compared to a conventional bus scheme. For a flop distance of 1800 μm, the proposed schemes use the gained delay slack to reduce the total device width, and thus reducing the energy dissipation by 31.2%. For a 500-ps cycle time, the proposed bus schemes increase the maximum distance between flip-flops by 33%. [ABSTRACT FROM AUTHOR]

The article talks about the functions of a computer power supply and the difference between the new retail power supplies from the usual gray boxes sold in bulk. The author explains that the Power Supply Unit (PSU) switches AC electricity into regulated DC voltages that was delivered to the inside parts of the computer. Several different DC voltages were needed and each voltage rail has a specific set of functions. It was also mentioned that maintaining a consistent voltage within a specific range is necessary for a PSU because providing excessive voltage can lead to a shortened lifespan for the unit.

In order to comply with its renewable energy targets, a new auction scheme has been adopted in Spain, and the first auction with the new scheme was conducted in January 2021. The design of the new auction implies a radical rupture with the previous auction scheme, on the basis of which auctions were organized in 2016 and 2017. The aim of this paper is to assess the design element choices made in the new auction scheme, identifying its pros and cons according to several criteria and goals, comparing them with the choices made in the previous auctions and with the international practice. The main conclusion is that the design elements of the new auctions are generally in line with international practice and are appropriate to achieve the goals set in the National Climate and Energy Plan (NECP). Nevertheless, some suggestions for changes in the scheme are provided. [ABSTRACT FROM AUTHOR]

This study contextualizes the current characteristics of the German electricity mix, what energy sources it uses and how much they are used in order to generate power, or what is the price that the final consumer pays for its electrical needs compared to other neighboring nations, among other relevant aspects. In the second and main part of the paper, in order to predict what will be the evolution of the aforementioned sector, something relevant due to Germany's front runner position in the current energy transition towards a cleaner and sustainable energy, that will potentially help us to understand the evolution of the majority of the advanced economies. The methodology that will be used is the modern portfolio theory, and applying the appropriate restrictions, a forecast of the electricity mix composition for the years 2030, 2040 and 2050 and the implications that it has in terms of power prices, pollution and health will be made. By 2030, 65% of the electricity produced in the country will be generated by RES and Biofuels, by 2040, 65%-82%, and by 2050 this proportion will reach 80%-90%. Also, conventional energy sources are expected to be less important as time passes. In contrast, all green energy sources will be improved drastically, being way more competitive in terms of production costs than fossil fuel sources. Indeed, onshore wind will become the single largest energy source, generating 31%-65% of power in the country, followed by solar (13%-28%). [ABSTRACT FROM AUTHOR]

The article discusses the experiences of two contributors who own Polestar 2 electric vehicles (EVs). One contributor highlights the cost-saving benefits of owning an EV, thanks to a home charging station and cheap-rate electricity. They also praise the car's impressive range and performance. The other contributor, who lives in a flat without home charging options, discusses their reliance on public charging stations and their positive driving experience with the Polestar 2. Both contributors mention some drawbacks, such as cramped interiors and unpleasant trim textures. Overall, they find the Polestar 2 to be a well-made and enjoyable car to drive. [Extracted from the article]

This paper discusses the effects of the implementation of the EU electricity acquis in the Energy Community (EnC) Contracting Parties, where the social, economic and political conditions are different from those in the old EU Member States. The liberalization of the electricity industry has had an important impact on social issues such as tariff reforms as well as affordability in these countries. To balance this impact, the EnC countries must be able to use mechanisms from the EU electricity acquis such as Public Service Obligation (PSO). This paper assesses whether the PSO provisions from Directive 2003/54/EC have been properly used as a regulatory tool aimed at addressing the impact of the liberalization of the electricity sectors in the Contracting Parties, or whether its only served as a justification to excessively regulate the end-users' electricity prices. [ABSTRACT FROM AUTHOR]

Purpose – Metamaterial unit cells composed of deep subwavelength resonators brought up new aspects to the antenna miniaturization problem. The paper experimentally demonstrates a metamaterial-inspired miniaturization method for circular patch antennas. In the proposed layouts, the space between the patch and the ground plane is filled with a proper metamaterial composed of either multiple split-ring or spiral resonators (SRs). The authors have manufactured two different patch antennas, achieving an electrical size of λ/3.69 and λ/8.26, respectively. The paper aims to discuss these issues. Design/methodology/approach – The operation of such a radiative component has been predicted by using a simple theoretical formulation based on the cavity model. The experimental characterization of the antenna has been performed by using a HP8510C vector network analyzer, standard horn antennas, automated rotary stages, coaxial cables with 50 Ω characteristic impedance and absorbers. Before the characterization measurements we performed a full two-port calibration. Findings – Electrically small circular patch antennas loaded with single layer metamaterials experimentally demonstrated to acceptable figures of merit for applications. The proposed miniaturization technique is potentially promising for antenna applications and the results presented in the paper constitute a relevant proof for the usefulness of the metamaterial concepts in antenna miniaturization problems. Originality/value – Rigorous experimental characterization of several meta material loaded antennas and proof of principle results were provided. [ABSTRACT FROM AUTHOR]

Quadratic converters have the voltage conversion ratios of two cascaded converters, but with fewer switches. They are not widely used, however, because they are generally less efficient than other converter types, but they can be useful for certain applications. In this paper, the characteristics of quadratic converters are explained, several examples of where they can be used in industrial applications are given, and a new three-phase converter that has been derived from quadratic conversion principles is presented. The feasibility of the new converter is confirmed with results obtained from an experimental prototype. [ABSTRACT FROM AUTHOR]

As nontechnical losses in power systems have recently become a global concern, electricity fraud detection models attracted increasing academic interest. The wide application of smart meters has offered more possibility to detecting fraud from user’s consumption patterns. However, the performances of existing consumption-based electricity fraud detection models are still not satisfactory enough for practice, partly due to their limited ability to handle high-dimensional data. In this paper, a deep-learning-based model is developed for detecting electricity fraud in the advanced metering infrastructure, namely, the multitask feature extracting fraud detector (MFEFD). The deep architecture has brought MFEFD a powerful ability to handle high-dimensional input, through which consumption patterns inside load profiles can be effectively extracted. Another challenge is that the insufficiency of labeled data has restricted the generalization of existing models since they are mostly based on supervised learning and labeled data. MFEFD is trained in a semisupervised manner, in which multitask training was implemented to combine the supervised and unsupervised training, so that both the knowledge from unlabeled and labeled data can be made use of. Real-world-data-based case studies have demonstrated MFEFD’s high detection performance, robustness, privacy preservation, and practicability. [ABSTRACT FROM AUTHOR]

We study battery filling policies with hard deadlines when the supply of energy can be modulated. This occurs for example with an electric plug-in vehicle using an adjustable electricity service for charging; such a service is offered in some countries as a means to provide flexibility to operators, and typically involves non-scheduled service reductions combined with a service guarantee that constrains these reductions. The problem for the battery user is to determine a charging policy, which we call a “consumption policy,” that meets a given “full battery” deadline while minimizing the energy cost (i.e., the bill paid to the electricity provider). As the charging efficiency is diminishing with respect to consumption, it is not optimal to charge as much and as early as possible. On the other hand service reductions cannot be predicted but it is possible to gain some information on the worst case reduction by analyzing past reductions. In this context, the computation of a causal consumption policy is an open problem. In this paper we consider a battery user interested in charging her battery while minimizing the worst case cost, where the total cost is a sum of two terms that reflect ( i) the total energy consumption and ( ii) the distance to a full battery at the deadline. We prove that there exists a causal consumption policy that minimizes the worst-case cost of the user. We find that the policy is threshold-based and give an efficient method to explicitly compute it at any time based solely on knowledge of past reductions, of the service guarantees and on the current distance to completion. Our method is based on the use of service curves and game theory. [ABSTRACT FROM PUBLISHER]

Discusses the theory of relativity of the physicist Albert Einstein. Use of Isaac Newton's law of gravitation as the model of a law of nature; Involvement of modification of the Newtonian theory of gravitation in the acceptance of the theory of relativity; Convenience of the Euclidean geometry for ordinary lengths and areas; Improvement of Einstein's original paper on the methods of the physicist Hendrik Antoon Lorentz in the theory of electricity.

This paper examines the dependence between electricity prices, demand, and renewable energy sources by means of a multivariate copula model while studying Germany, the widest studied market in Europe. The inter-dependencies are investigated in-depth and monitored over time, with particular emphasis on the tail behavior. To this end, suitable tail dependence measures are introduced to take into account a multivariate extreme scenario appropriately identified through the Kendall's distribution function. The empirical evidence demonstrates a strong association between electricity prices, renewable energy sources, and demand within a day and over the studied years. Hence, this analysis provides guidance for further and different incentives for promoting green energy generation while considering the time-varying dependencies of the involved variables. [ABSTRACT FROM AUTHOR]

Harbour Air, a Canadian airline based in Vancouver, is set to become the world's first all-electric airline. The airline operates floatplanes, offering scheduled passenger services from downtown Vancouver to destinations like Victoria and Seattle. CEO Bert van der Stege, formerly of Lufthansa, highlights the relaxed and efficient travel experience provided by Harbour Air. The airline serves a diverse range of passengers, including business travelers, government officials, and tourists, and is known for its frequent flights and short routes. Harbour Air also offers consulting services to other companies interested in starting floatplane operations. However, the airline faces challenges with punctuality and safety during fall and winter due to low clouds. The company is self-sufficient in maintenance and provides services to third parties. The fleet consists of various aircraft, with the de Havilland DHC-3T Otter being the most commonly used. In 2019, Harbour Air made headlines for operating the world's first electric passenger aircraft flight and is currently working on certifying its 'eBeaver' aircraft for commercial use. The airline aims to retrofit its entire fleet with green propulsion within the next ten years. [Extracted from the article]

This paper investigates the impedance boundary of impedance matching networks analytically, graphically rep- resenting the resultant impedance matching domains. A set of explicit equations is derived to allow the rapid development of the impedance boundary of such networks. The equations are analyzed thoroughly, such that the impact each component has upon the resultant domain may be obtained. These equations are then developed further to provide a design procedure enabling a matching network to be designed to achieve impedance matching in a specific impedance domain given the source impedance and operating frequency. [ABSTRACT FROM AUTHOR]

As the demand for ΔΣ (Delta-Sigma) analog-to-digital converters (ADCs) with higher bandwidth and higher signal-to-noise ratio (SNR) increases, designers have to look for efficient structures with low oversampling ratio (OSR). The Leslie-Singh or M-0 MASH architecture is often used in such applications. Based on this architecture, a reduced-sample-rate structure was introduced, which needs less chip area and power, but increases the noise floor. This paper describes a modification of the reduced-sample- rate structure which realizes an optimized transfer function, and avoids an SNR loss. In fact, it increases the SNR for high-order modulators. The method can also be applied to one-stage modulators. Simulation results for different MASH ADCs and sensitivity analysis verify the usefulness of the proposed technique. [ABSTRACT FROM AUTHOR]

The article reports that the Maryland's General Assembly has passed a measure mandating the point that electricity supply will come from renewable sources by 2030. It mentions that the legislation can improve wind farms, solar industry jobs in the state and alternative energy development. It mentions that the subsidize solar and wind farms, with trash incinerators, hydroelectric dams and paper mills will be powered with black liquor.

Concentration photovoltaic (CPV) modules promise a more efficient, higher power output than traditional photovoltaic modules. This is achieved by concentrating sunlight onto a small 1 cm2 concentrator triple-junction (CTJ) InGaP/InGaAs/Ge cell by using high quality precision optics. In order to achieve high energy performance and reliability, well thought-out design decisions must be made in the development of a CPV module. This paper investigates the design of two CPV modules (Module I and II), which are based on the Sandia III Baseline Fresnel module. The investigation concentrated on the effect of the optimization of the optical design on the electrical performance characteristics of CTJ cells with good thermal dissipation. The best performance achieved by Module I was at 336 times operational concentration (Xo), which produced a Pmax of 10.29 W per cell, with cell and module efficiencies of 39% and 24%, respectively. In the development of the second module (Module II) pre-deployment criteria such as the CTJ cell and system components characteristics was used to eliminate faulty components from the system what was observed in Module I. Cell units that were optimized in Module II showed no form of degradation in their Current-Voltage (I-V) characteristics. The cell unit operating under optical misalignment showed a progressive degradation with long term operation in the field. [ABSTRACT FROM AUTHOR]

This article focused on the future of cryptocurrency with an emphasis on the environmental impact of this industry. It looks into how much electricity is required to fuel this industry as well as whether this usage can be reduced in the future. Topics include cryptocurrency mining, electricity usage of leading cryptocurrencies Bitcoin, Ether, and Dogecoin; as well as how the Ethereum community is working to minimize the environmental impact by utilizing a process that is distinct from mining.

The article focuses on the outlook for a hydrogen economy. Much hope surrounds the advances in fuel cells and the possibility of a cleaner hydrogen economy. But hydrogen is not free, in either dollars or environmental damage. The hydrogen fuel cell costs nearly 100 times as much per unit of power produced as an internal-combustion engine. Hydrogen is also about five times as expensive, per unit of usable energy, as gasoline. Simple dollars are only one speed bump on the road to the hydrogen economy. Another is that supplying the energy required to make pure hydrogen may itself cause pollution. Even if that energy is from a renewable source, it may have more environmentally sound uses than the production of hydrogen. Hydrogen fuel cells have two obvious attractions. First, they produce no pollution at point of use Second, hydrogen can come from myriad sources. Pure hydrogen does not exist naturally on earth and is so highly processed that it is really more of a carrier or medium for storing and transporting energy from some original source to a machine that makes electricity. Each source, however, has an ugly side. In any case, if hydrogen were to increase suddenly in supply, fuel cells might not even be the best use for the gas. In a recent paper, Reuel Shinnar, professor of chemical engineering at the City College of New York, reviewed the alternatives for power and fuel production. Rather than the use of hydrogen as fuel, he suggested something far simpler: increased use of hydrocracking and hydrotreating. The U.S. could save three million barrels of oil a day that way, Shinnar calculated. Hydrocracking and hydrotreating both start with molecules in crude oil that are unsuitable for gasoline because they are too big and have a carbon-to-hydrogen ratio that is too heavy with carbon. The processes are expensive but still profitable, because they allow the refineries to take ingredients that are good for only low-value products and turn them into gasoline.

Another study conducted by the World Bank found that Pakistan has tremendous potential to generate solar power and that just utilising 0.071% of the country's area for solar photovoltaic (PV) power generation would meet its current electricity demand. The research indicated that Pakistan has the potential to produce a whopping 92% of its electricity requirements from solar energy; this rate is among the highest in the world. [Extracted from the article]

The article argues about hosting socialite Paris Hilton at a nightclub Amnesia Ibiza in Brazil, British scientists finding way to convert wine into electricity and also evlautes pure gold rolling papers from gold company Shine Papers LLC.

Purpose – The paper aims to propose a new type of three-phase quasi-Z-source indirect matrix converter (QZSIMC) to extend the voltage gain for application in the induction motor drives. Design/methodology/approach – A unique H-shape quasi-Z-source network is connected between the three-phase voltage source and traditional indirect matrix converter to achieve the voltage boost and buck in a single-stage power conversion. The complete space vector modulation (SVM) method is proposed to control the proposed QZSIMC. The output voltage amplitude of quasi-Z-source network can be boosted by the shoot-through of the front-end rectifier, so the whole system's voltage gain is extended. Meanwhile, the QZSIMC modeling and quasi-Z-source impedance parameter design are developed by using the state space averaging method. The design-oriented analysis based on small signal model is used to investigate the quasi-Z-source impedance parameter's impact on the QZSIMC's dynamic performance. A simulated application example employs a 4-kW induction motor drive to verify the proposed QZSIMC, the developed modulation method and parameter design method. Findings – The proposed QZSIMC can achieve high voltage gain larger than one and also can fulfill buck function, which widens the induction motor drive's operation range. The simulation results verify the proposed QZSIMC and SVM and also validate the quality performance of the proposed induction motor drive and all theoretical analysis and parameter design method. Originality/value – The proposed QZSIMC effectively overcomes the limitation of traditional indirect matrix converter, through extending the voltage gain larger than one. The systematic principle, analysis, parameter design, and simulation verification provide the proposed QZSIMC with a feasible approach in practical induction motor drive applications. [ABSTRACT FROM AUTHOR]

The article discusses the 141st Session of the Governing Board of the Organization of the Petroleum Exporting Countries Fund for International Development (OFID) meeting, in which funds were granted for electricity expansion in Kenya and promoting solar technologies in Mozambique, Namibia.

Abstract: The flexoelectric effect is very strong for nanosized dielectrics. Moreover, on the nanoscale, surface effects and the electrostatic force cannot be ignored. In this paper, an electric enthalpy variational principle for nanosized dielectrics is proposed concerning with the flexoelectric effect, the surface effects and the electrostatic force. Here, the surface effects contain the effects of both surface stress and surface polarization. From this variational principle, the governing equations and the generalized electromechanical Young–Laplace equations are derived and can account for the effects of flexoelectricity, surface and the electrostatic force. Moreover, based on this variational principle, both the generalized bulk and surface electrostatic stresses can be obtained and are composed of two parts: the Maxwell stress corresponding to the polarization and strain and the remainder relating to the polarization gradient and the strain gradient. The theory developed in this paper provides the underlying framework for the analyses and computational solutions of electromechanical problems in nanodielectrics. [Copyright &y& Elsevier]