Reseña de un libro sobre la principal obra hidráulica construida por la Mexican Light and Power a partir de 1903. La empresa fue fundada por Fred Stark Pearson para abastecer de energía eléctrica a Ciudad de México y al centro del país. El libro trata de valorar el patrimonio industrial del municipio en que se encuentra localizado, destacando su importancia para la identidad y el desarrollo, y colaborando con un proyecto colectivo de la comunidad local. Review of a book about the main hydraulic work built by the Mexican Light and Power since 1903. The company was founded by Fred Stark Pearson to supply electricity to Mexico City and the center of the country. The book tries to assess the industrial heritage of the municipality in which it is located, highlighting its importance for identity and development, and collaborating with a collective project of the local community
Barniol, Pablo, Campos, Esmeralda, and Zavala, Genaro
Enseñanza de las ciencias: revista de investigación y experiencias didácticas; Vol. 36, Núm. 2 (2018); p. 165-190 Enseñanza de las Ciencias: revista de investigación y experiencias didácticas; Vol. 36, Núm. 2 (2018); p. 165-190
Subjects
Electricity, Magnetism, Conceptual understanding, Multiple-choice instrument, Reliability analysis, Electricidad, Magnetismo, Entendimiento conceptual, Instrumento de opciones múltiples, and Análisis de confiabilidad
Abstract
The Conceptual Survey of Electricity and Magnetism (CSEM) has been widely used in the field of physics education. However, to date, no study presents a version of the test in Spanish. This article has three general objectives: 1) to present the CSEM in Spanish and analyze its reliability and discriminatory power, 2) to perform a detailed analysis of the most frequent difficulties of the students in the concepts evaluated in the test, and 3) to establish recommendations for research and instruction of these concepts. The test was implemented to 310 students who finished an Electricity and Magnetism course in a Mexican university. Researchers or physics professors from Spanish-speaking countries may use the test in Spanish that we present in the PhysPort project (physport. org); and the analysis and recommendations for instruction in this study. La prueba The Conceptual Survey of Electricity and Magnetism (CSEM) ha sido ampliamente utilizada en el área de la educación de la física. Sin embargo, hasta la fecha no existe un estudio que presente el test en su versión en español. Este artículo tiene tres objetivos generales: 1) presentar el CSEM en su versión en español y analizar la confiabilidad y poder discriminatorio de este, 2) realizar un análisis detallado de las dificultades más frecuentes de los estudiantes en los conceptos evaluados en el test y 3) establecer recomendaciones para la investigación e instrucción de estos conceptos. El test fue implementado a 310 estudiantes que terminaban el curso Electricidad y Magnetismo de una universidad mexicana. El test en su versión en español, que presentamos en el proyecto Physport (physport. org), los análisis y las recomendaciones para la instrucción pueden ser utilizados por investigadores o por profesores de física de países hispanohablantes.
Bartolomé Rodríguez, Isabel and Girón Sierra, Álvaro
Revista de Historia Industrial; Vol. 27, Núm. 71 (2018); p. 55-85
Subjects
gas, electricidad, historia empresarial, Gas, Electricity, and Business history
Abstract
El artículo aborda la trayectoria de Gaz Franco-Belge. Robert Lesage et Cie. (Cie. Franco-Belge), fundada en Bélgica en 1880, en Sanlúcar de Barrameda. En 1883, se inauguró la iluminación pública de gas y en 1919 cesó su actividad. Esta iniciativa corresponde a una generación efímera de empresas gasistas de matriz extranjera de ámbito municipal. En apariencia, se inscribiría en una tanda de inversiones poco razonables en mercados urbanos insuficientemente desarrollados, que acabaron de liquidar la competencia con la electricidad y las restricciones a las industrias consumidoras de carbón durante la Gran Guerra. Aquí, se defiende que el "privilegio" exclusivo de iluminación pública fue en realidad una condena en tanto el Consistorio se convirtió en el usuario principal y, al mismo tiempo, en la única fuente de regulación del mercado gasista en la ciudad. Sin intención ni de aumentar los impuestos ni de pagar este servicio público, se anclaba a las empresas concesionarias a negocios poco rentables, en localidades con rentas medias bajas. This article focuses on the trajectory of Gaz Franco-Belge. Robert Lesage et Cie (Cie Franco- Belge), founded in Belgium in 1880, in Sanlúcar de Barrameda. Public gas lighting was inaugurated in 1883 and the company ceased its activity in 1919. This initiative may be included in an ephemeral generation of foreign companies in charge of municipal lighting. Apparently, these foreign direct investments were unreasonable where urban markets were underdeveloped. Competition with electricity and the restrictions on coal consumption during World War I finished with these firms. Actually, the exclusive “privilege” of public lighting was a sentence as long as the town Hall became both the main user and the only source of market regulation. Without any intention of either raising taxes or paying for this public service, the councils anchored concessionaires companies to unprofitable businesses, in localities with a very low income average.
Revista de Historia Industrial; Vol. 27, Núm. 71 (2018); p. 87-119
Subjects
Gas, electricidad, consumo, España, Electricity, Consumption, and Spain
Abstract
En este trabajo se aborda el estudio de dos energías básicas, gas y electricidad, desde la perspectiva de la demanda y bajo un enfoque comparativo. La fuente a utilizar será la Estadística del Impuesto sobre el consumo de luz de gas, electricidad y carburo de calcio, complementada/contrastada con otras (Estadística Minera, Datos estadísticos técnicos de las fábricas de gas españolas, monografías locales, etc.). Los principales aspectos que se tratarán serán su difusión geográfica, incardinándola en la modernización de las estructuras urbanas, y los niveles de gasto energético, insertado a su vez en los cambios generales de las pautas de consumo, ambos desde una doble perspectiva espacial y temporal. Todo ello se llevará a cabo en un marco cronológico clave, el primer tercio del siglo XX, lo que permitirá abrir nuevas perspectivas y debates acerca del modo concreto en que se llevó a cabo en España el proceso de transición energética del gas a la electricidad. This paper deals with the study of two basic energies, gas and electricity, from a demand perspective, and under a comparative approach. The source that will be used is the Estadística del impuesto sobre el consumo de luz de gas, electricidad y carburo de calcio, which is complemented/ contrasted with others (Estadística Minera, Datos estadísticos técnicos de las fábricas de gas españolas, local monographs, etc). The main issues will be their geographical diffusion, placing it in the context of the modernization of urban structures, as well as the levels of energy expenditure, which are linked to the global changes in consumption patterns, both from a spatial and temporal perspective. All this will be carried out in a chronological framework, over the first third of the twentieth century, which will open new perspectives and debates about the specific way in which the process of energy transition from gas to electricity was carried out in Spain.
Revista de Historia Industrial; Vol. 25, Núm. 62 (2016); p. 143-179
Subjects
Electricidad, sistemas de tarificación, precios, España, siglo xx, Electricity, Rate Systems, Tariffs, Spain, and 20th Century
Abstract
En 1934, 672 empresas eléctricas de toda España publicaron en los Boletines Oficiales provinciales y en el Butlletí Oficial de la Generalitat de Catalunya sus precios de venta de la energía destinada a fuerza. Estos datos nos permiten disponer de una información muy completa de los sistemas tarifarios utilizados por los productores y distribuidores de electricidad antes de la guerra civil así como también de los precios máximos y de los descuentos que ofrecían a sus clientes. En este artículo se analizan los precios y descuentos publicados desde una doble perspectiva, empresarial y territorial, con objeto de conocer el precio de la energía eléctrica para usos industriales en la España del momento. Las notables diferencias observadas en el precio de venta del kWh reflejan la existencia de un mercado eléctrico escasamente integrado y el importante papel que seguían desempeñando los pequeños y medianos productores y distribuidores de energía a la hora de suministrar fluido a miles de empresas de todo el país en vísperas de la Guerra Civil. In 1934, a total of 672 electricity companies from all over Spain made public in the Boletines Oficiales of the provinces and in the Butlletí Oficial de la Generalitat de Catalunya their rate systems and selling prices for power. These data provide comprehensive information about the diverse pricing system used by producers and distributors of electricity in Spain before the Civil War as well as the maximum prices and discounts offered from them to their clients. This paper analyses these prices and discounts from a business and territorial point of view. The remarkable differences in the selling price of kWh among firms and places reflect the existence of a poorly integrated electricity market and the important role small and medium producers and distributors of energy still played when supplying electricity to thousands of consumers around the country on the eve of the Civil War.
Enseñanza de las ciencias: revista de investigación y experiencias didácticas; 2014: Vol.: 32 Núm.: 1; p. 285-286 Enseñanza de las Ciencias: revista de investigación y experiencias didácticas; 2014: Vol.: 32 Núm.: 1; p. 285-286
Subjects
llibres de text, electricitat, anàlisi del llenguatge, educació intercultural, textbooks, electricity, language analysis, intercultural education, libros de texto, electricidad, análisis del lenguaje, and educación intercultural
Abstract
Aquesta tesi se centra essencialment en l'estudi de dues variables: el llenguatge de dos llibres de text quant a si afavoreix o no la comprensió explicativa, i les respostes dels estudiants quan s'utilitzen altres fonts d'informació complementària. La mostra pertany a dos països: Canadà i Pakistan, i com a metodologia es va utilitzar l'anàlisi documental i un disseny quasiexperimental. Els resultats apunten a la necessitat de millorar els llibres de text i el seu ús. This thesis focuses primarily on the study of two variables: the language of two textbooks as to whether or not favors explanatory understanding, and the responses of the students when they use other sources for additional information. The sample belongs to two countries: Canada and Pakistan, and document analysis as a methodology and a quasi-experimental design was used. The results point to the need to improve textbooks and usage. La presente tesis se centra esencialmente en el estudio de dos variables: el lenguaje de dos libros de texto en cuanto a si favorece o no la comprensión explicativa, y las respuestas de los estudiantes cuando utilizan otras fuentes de información complementaria. La muestra pertenece a dos países: Canadá y Pakistán, y como metodología se utilizó el análisis documental y un diseño cuasiexperimental. Los resultados apuntan a la necesidad de mejorar los libros de texto y su uso.
Revista de Historia Industrial; 2011: Núm.: 47; p. 51-76
Subjects
Guerra Civil Española, Electricidad, Producción, Historia empresarial, Spanish Civil War, Electricity, Production, and Business History.
Abstract
La historia de la Compañía Eléctrica Mengemor durante la Guerra Civil Española (1936-1939) es interesante, ya que era una de las grandes eléctricas del país, y su dirección e instalaciones quedaron divididas hasta el final de la contienda, y buena parte de las mismas en el frente de batalla. Para cada bando (el republicano y el nacional) analizaré: quiénes y cómo la dirigieron, el estado de las instalaciones, cómo se repararon y la electricidad producida. En general, ésta creció en ambas zonas, gracias a la gestión realizada y los escasos daños sufridos. The history of the electric company Mengemor during the Spanish Civil War (1936-1939) is interesting in that it was one of the main electric companies in Spain, and its management and installations were divided during the conflict, and a large part of these were on the front line. For each side in the conflict (the republicans and the nationalists) the following will be analyzed: how they were managed and by whom, the state of the installations, how they were repaired, and the electricity which was produced. In general, production grew in both zones. This can be explained by good management and the scarce damage inflicted on the installations.
Daily Dispatch (East London, South Africa), January 12, 2021 Economy, Business & Finance, 2pp
Abstract
Karoo municipality slammed for unaffordable service contract One of the country’s poorest municipalities is planning to outsource the provision of electricity and water services at a cost of R735m, the Western Cape government said on Monday. However, the province is mounting a legal challenge to stop the Kannaland municipality in the central Karoo from “incurring massive liabilities that it simply cannot afford”, the provincial government said...
Daily Dispatch (East London, South Africa), January 12, 2021 Economy, Business & Finance, 3pp
Abstract
New wind farm near Hamburg can power a sizeable town Sustainable energy fights climate change, is inexhaustible and costs of production are dropping. SA’s vast coastline and consistent sunshine put it in the fore to embrace sustainable energy Sustainable energy fights climate change, is inexhaustible and costs of production are dropping...
Daily Dispatch (East London, South Africa), January 12, 2021 Labour, 3pp
Abstract
Unions cry foul as KSD scoops service bills off staff salaries Unions have accused King Sabata Dalindyebo municipal bosses of bullying staff after several workers found unpaid rates and electricity bills deducted from their salaries. A community services general worker and single mom said she had been docked her full month’s wage of R7,000 in December without her knowledge...
Sun, The (Lagos, Nigeria), January 12, 2021 NEWS, 2pp
Abstract
(From Joy Odigie, NAN) Austin Atakpu, the Managing Director, TCS Paymeters Ltd., manufacturers of prepaid meters, says metering of houses in the country is a gradual process and not automatic. Atakpu disclosed this during an interview with the News Agency of Nigeria (NAN) in Benin on Tuesday. He was responding to a question on the unavailability of prepaid meters for some energy consumers in the country...
Sowetan (Johannesburg, South Africa), January 12, 2021 Politics, 2pp
Abstract
W Cape opposes R735m water, power deal Kannaland ‘jobs for pals’ decried 'R735m deal too much for Kannaland residents' One of the country’s poorest municipalities is planning to outsource electricity and water services at a cost of R735m, the Western Cape government said yesterday. However, the province is mounting a legal challenge to stop the Kannaland municipality in the central Karoo from “incurring massive liabilities that it simply cannot afford”, the provincial government said...
Radio France Internationale - RFI, January 13, 2021 NEWS, 4pp
Abstract
Renewables have been steadily increasing in France's electricity mix, but growth in 2020 was not fast enough to meet targets. Among the issues at play is the Covid-19 pandemic, which slowed down the development and installation of new projects. "The effect of the health crisis and the spring confinement significantly slowed down the development of [renewable energy] projects, notably the phases of construction and connecting to the grid," Pascal Sokoloff, managing director of the Fnccr, an organisation that works on service networks in 800 cities, and contributed to the yearly report on renewable electricity published this week by the Observatory...
Oban Times, The (Scotland), January 12, 2021 News, 2pp
Abstract
A £1.15million electricity network serving Taynuilt has been completed. The project was carried out for homes and businesses in the village with teams from Scottish and Southern Electricity Networks (SSEN) Distribution working to upgrade and strengthen the electricity infrastructure, making sure power supplies were robust ahead of the worst of the winter months...
Herald, The (Port Elizabeth, South Africa), January 7, 2021 Science & Technology, 2pp
Abstract
Power cuts blamed on ageing infrastructure, cable theft and vandalism Uitenhage battles without electricity even before load-shedding resumes Power cuts blamed on ageing infrastructure, cable theft and vandalism koend@theherald.co.za While Eskom announced yesterday that load-shedding stage 2 would be implemented, residents in Uitenhage have had to contend with constant power cuts — something the Nelson Mandela Bay municipality said it wanted to address...
Sowetan (Johannesburg, South Africa), January 6, 2021 Human Interest, 2pp
Abstract
Villagers still with no electricity after November tornado Eskom says team disrupted from working Eskom says team disrupted from working Ziyanda ZweniHundreds of villagers in Gxididi village in Mthatha, Eastern Cape, have not had electricity since November. A tornado tore through the village on November 17, knocking out the power supply, and while electricity was restored to other affected villages in the area, Gxididi continues to languish in the dark...
Sun, The (Lagos, Nigeria), January 5, 2021 NEWS, 2pp
Abstract
From Benjamin Babine, Abuja Two months after the backlash caused by an increase in electricity tarrif, the Federal Government has again increased the tariff payable by power consumers by 50 percent. The Nigerian Electricity Regulatory Commission (NERC) approved the new increase which is to take effect from January 1, 2021...
Daily Dispatch (East London, South Africa), January 4, 2021 Opinion & Editorial, 2pp
Abstract
Empty coffers another unfair blow to EC pupils Managing a school in the Eastern Cape can be challenging at the best of times. Add a global health crisis to the mix and the job becomes even more difficult. The dire state of schools was thrust into the spotlight when the first wave of Covid-19 hit...
Herald, The (Port Elizabeth, South Africa), December 31, 2020 Crime, Law & Justice, 3pp
Abstract
Eskom’s pressure on defaulting municipalities undesirable: court Eskom’s attempts to coerce municipalities to pay when they are unable to do so is undesirable, the Supreme Court of Appeal (SCA) said on Tuesday when it dismissed two applications by the power utility. The applications related to appeals against two decisions by the high court in Pretoria‚ which set aside Eskom’s decisions to interrupt the bulk supply of electricity to Mpumalanga’s Emalahleni and Thaba Chweu local municipalities...
Business Day: Web Edition Articles (Johannesburg, South Africa), December 30, 2020 National, 2pp
Abstract
Eskom has been ordered by the Commission for Conciliation, Mediation and Arbitration (CCMA) to pay accrued special allowances due to its employees who work at remote power stations, Solidarity sector coordinator for electrical Tommy Wedderspoon said on Wednesday. The allowances relate to medical benefits and the education of employees' children at boarding schools...