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  JamessColo الأحد, 20 تموز/يوليو 2025 07:43 Comment Link

  The bow of a US Navy cruiser damaged in a World War II battle in the Pacific has shone new light on one of the most remarkable stories in the service’s history.
  
  More than 80 years ago, the crew of the USS New Orleans, having been hit by a Japanese torpedo and losing scores of sailors, performed hasty repairs with coconut logs, before a 1,800-mile voyage across the Pacific in reverse.
  
  The front of the ship, or the bow, had sunk to the sea floor. But over the weekend, the Nautilus Live expedition from the Ocean Exploration Trust located it in 675 meters (2,214 feet) of water in Iron Bottom Sound in the Solomon Islands.
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  Using remotely operated underwater vehicles, scientists and historians observed “details in the ship’s structure, painting, and anchor to positively identify the wreckage as New Orleans,” the expedition’s website said.
  
  On November 30, 1942, New Orleans was struck on its portside bow during the Battle of Tassafaronga, off Guadalcanal island, according to an official Navy report of the incident.
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  The torpedo’s explosion ignited ammunition in the New Orleans’ forward ammunition magazine, severing the first 20% of the 588-foot warship and killing more than 180 of its 900 crew members, records state.
  
  The crew worked to close off bulkheads to prevent flooding in the rest of the ship, and it limped into the harbor on the island of Tulagi, where sailors went into the jungle to get repair supplies.
  
  “Camouflaging their ship from air attack, the crew jury-rigged a bow of coconut logs,” a US Navy account states.
  With that makeshift bow, the ship steamed – in reverse – some 1,800 miles across the Pacific to Australia for sturdier repairs, according to an account from the National World War II Museum in Louisiana.
  
  Retired US Navy Capt. Carl Schuster described to CNN the remarkable skill involved in sailing a warship backwards for that extended distance.
  
  “‘Difficult’ does not adequately describe the challenge,” Schuster said.
  
  While a ship’s bow is designed to cut through waves, the stern is not, meaning wave action lifts and drops the stern with each trough, he said.
  
  When the stern rises, rudders lose bite in the water, making steering more difficult, Schuster said.
  
  And losing the front portion of the ship changes the ship’s center of maneuverability, or its “pivot point,” he said.
  
  “That affects how the ship responds to sea and wind effects and changes the ship’s response to rudder and propellor actions,” he said.
  
  The New Orleans’ officers would have had to learn – on the go – a whole new set of actions and commands to keep it stable and moving in the right direction, he said.
  
  The ingenuity and adaptiveness that saved the New Orleans at the Battle of Tassafaronga enabled it to be a force later in the war.
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  DarrickmIc الأحد, 20 تموز/يوليو 2025 07:43 Comment Link

  Today was supposed to be the day that President Donald Trump’s so-called “reciprocal” tariffs on dozens of countries kicked in after a three-month delay, absent trade deals. But their introduction has been postponed, again.
  
  The new, August 1 deadline prolongs uncertainty for businesses but also gives America’s trading partners more time to strike trade deals with the United States, avoiding the hefty levies.
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  Mainstream economists would probably cheer that outcome. Most have long disliked tariffs and can point to research showing they harm the countries that impose them, including the workers and consumers in those economies. And although they also recognize the problems free trade can create, high tariffs are rarely seen as the solution.
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  Trump’s tariffs so far have not meaningfully boosted US inflation, slowed the economy or hurt jobs growth. Inflation is “the dog that didn’t bark,” Treasury Secretary Scott Bessent likes to say. But economists argue inflation and jobs will have a delayed reaction to tariffs that could start to get ugly toward the end of the year, and that the current calm before the impending storm has provided the administration with a false sense of security.
  
  “The positives (of free trade) outweigh the negatives, even in rich countries,” Antonio Fatas, an economics professor at business school INSEAD, told CNN. “I think in the US, the country has benefited from being open, Europe has benefited from being open.”
  
  Consumers lose out
  Tariffs are taxes on imports and their most direct typical effect is to drive up costs for producers and prices for consumers.
  
  Around half of all US imports are purchases of so-called intermediate products, needed to make finished American goods, according to data from the Organisation for Economic Co-operation and Development.
  
  “If you look at a Boeing aircraft, or an automobile manufactured in the US or Canada… it’s really internationally sourced,” Doug Irwin, an economics professor at Dartmouth College, said on the EconTalk podcast in May. And when American businesses have to pay more for imported components, it raises their costs, he added.
  
  Likewise, tariffs raise the cost of finished foreign goods for their American importers.
  
  “Then they have to pass that on to consumers in most instances, because they don’t have deep pockets where they can just absorb a 10 or 20 or 30% tariff,” Irwin said.
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  Vincentcoask السبت, 19 تموز/يوليو 2025 11:04 Comment Link

  “AI expends a lot of energy being polite, especially if the user is polite, saying ‘please’ and ‘thank you,’”
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  Dauner explained. “But this just makes their responses even longer, expending more energy to generate each word.”
  
  For this reason, Dauner suggests users be more straightforward when communicating with AI models. Specify the length of the answer you want and limit it to one or two sentences, or say you don’t need an explanation at all.
  
  Most important, Dauner’s study highlights that not all AI models are created equally, said Sasha Luccioni, the climate lead at AI company Hugging Face, in an email. Users looking to reduce their carbon footprint can be more intentional about which model they chose for which task.
  
  “Task-specific models are often much smaller and more efficient, and just as good at any context-specific task,” Luccioni explained.
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  If you are a software engineer who solves complex coding problems every day, an AI model suited for coding may be necessary. But for the average high school student who wants help with homework, relying on powerful AI tools is like using a nuclear-powered digital calculator.
  
  Even within the same AI company, different model offerings can vary in their reasoning power, so research what capabilities best suit your needs, Dauner said.
  
  When possible, Luccioni recommends going back to basic sources — online encyclopedias and phone calculators — to accomplish simple tasks.
  
  Why it’s hard to measure AI’s environmental impact
  Putting a number on the environmental impact of AI has proved challenging.
  
  The study noted that energy consumption can vary based on the user’s proximity to local energy grids and the hardware used to run AI models.
  That’s partly why the researchers chose to represent carbon emissions within a range, Dauner said.
  
  Furthermore, many AI companies don’t share information about their energy consumption — or details like server size or optimization techniques that could help researchers estimate energy consumption, said Shaolei Ren, an associate professor of electrical and computer engineering at the University of California, Riverside who studies AI’s water consumption.
  
  “You can’t really say AI consumes this much energy or water on average — that’s just not meaningful. We need to look at each individual model and then (examine what it uses) for each task,” Ren said.
  
  One way AI companies could be more transparent is by disclosing the amount of carbon emissions associated with each prompt, Dauner suggested.
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  Craigrig السبت, 19 تموز/يوليو 2025 10:38 Comment Link

  Guatemala has pledged a 40% increase in deportation flights carrying Guatemalans and migrants of other nationalities from the United States, President Bernardo Arevalo announced Wednesday during a press conference with US Secretary of State Marco Rubio.
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  Guatemala has also agreed to create a task force for border control and protection along the country’s eastern borders. The force, composed of members of the National Police and army, will be tasked with fighting “all forms of transnational crime,” Arevalo said.
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  Foreign nationals who arrive in Guatemala through deportation flights will be repatriated to their home countries, Arevalo said, adding that the US and Guatemala would continue to have talks on how the process would work and how the US would cooperate.
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  Arevalo also said that Rubio has voiced his support for developing infrastructure projects in the Central American nation. He added that his government would send a delegation to Washington in the coming weeks to negotiate deals for economic investments in Guatemala – which he said would incentivize Guatemalans to stay in their home country and not migrate to the US.
  
  Arevalo said Guatemala has not had any discussions about receiving criminals from the US as El Salvador’s president has offered. He also insisted his country has not reached a “safe third country” agreement with the United States, which would require migrants who pass through Guatemala to apply for asylum there rather than continuing to the US.
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  AustinKiz السبت, 19 تموز/يوليو 2025 05:12 Comment Link

  Extreme heat is a killer. A recent heat wave shows how much more deadly it’s becoming
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  Extreme heat is a killer and its impact is becoming far, far deadlier as the human-caused climate crisis supercharges temperatures, according to a new study, which estimates global warming tripled the number of deaths in the recent European heat wave.
  
  For more than a week, temperatures in many parts of Europe spiked above 100 degrees Fahrenheit. Tourist attractions closed, wildfires ripped through several countries, and people struggled to cope on a continent where air conditioning is rare.
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  The outcome was deadly. Thousands of people are estimated to have lost their lives, according to a first-of-its-kind rapid analysis study published Wednesday.
  
  A team of researchers, led by Imperial College London and the London School of Hygiene and Tropical Medicine, looked at 10 days of extreme heat between June 23 and July 2 across 12 European cities, including London, Paris, Athens, Madrid and Rome.
  
  They used historical weather data to calculate how intense the heat would have been if humans had not burned fossil fuels and warmed the world by 1.3 degrees Celsius. They found climate change made Europe’s heat wave 1 to 4 degrees Celsius (1.8 to 7.2 Fahrenheit) hotter.
  
  The scientists then used research on the relationship between heat and daily deaths to estimate how many people lost their lives.
  
  They found approximately 2,300 people died during ten days of heat across the 12 cities, around 1,500 more than would have died in a world without climate change. In other words, global heating was responsible for 65% of the total death toll.
  
  “The results show how relatively small increases in the hottest temperatures can trigger huge surges in death,” the study authors wrote.
  
  Heat has a particularly pernicious impact on people with underlying health conditions, such as heart disease, diabetes and respiratory problems.
  
  People over 65 years old were most affected, accounting for 88% of the excess deaths, according to the analysis. But heat can be deadly for anyone. Nearly 200 of the estimated deaths across the 12 cities were among those aged 20 to 65.
  
  Climate change was responsible for the vast majority of heat deaths in some cities. In Madrid, it accounted for about 90% of estimated heat wave deaths, the analysis found.
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  JorgeDaH السبت, 19 تموز/يوليو 2025 03:04 Comment Link

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  Aparatos de balanceo: fundamental para el operacion fluido y optimo de las maquinarias.
  
  En el mundo de la avances contemporanea, donde la rendimiento y la estabilidad del equipo son de maxima trascendencia, los aparatos de ajuste cumplen un tarea crucial. Estos aparatos especializados estan concebidos para calibrar y asegurar elementos dinamicas, ya sea en dispositivos de fabrica, medios de transporte de traslado o incluso en equipos caseros.
  
  Para los profesionales en reparacion de equipos y los tecnicos, utilizar con aparatos de calibracion es esencial para garantizar el rendimiento uniforme y seguro de cualquier sistema giratorio. Gracias a estas soluciones modernas innovadoras, es posible disminuir notablemente las sacudidas, el sonido y la carga sobre los sujeciones, aumentando la longevidad de partes costosos.
  
  De igual manera relevante es el funcion que desempenan los aparatos de ajuste en la servicio al usuario. El asistencia profesional y el reparacion constante aplicando estos sistemas facilitan dar servicios de gran nivel, incrementando la satisfaccion de los usuarios.
  
  Para los duenos de proyectos, la contribucion en sistemas de equilibrado y detectores puede ser clave para optimizar la efectividad y eficiencia de sus aparatos. Esto es especialmente trascendental para los duenos de negocios que gestionan reducidas y pequenas empresas, donde cada aspecto importa.
  
  Por otro lado, los equipos de equilibrado tienen una amplia implementacion en el area de la prevencion y el supervision de estandar. Permiten detectar posibles problemas, evitando intervenciones caras y danos a los aparatos. Mas aun, los resultados generados de estos aparatos pueden emplearse para perfeccionar sistemas y potenciar la reconocimiento en plataformas de consulta.
  
  Las areas de implementacion de los equipos de balanceo cubren multiples ramas, desde la fabricacion de ciclos hasta el monitoreo de la naturaleza. No importa si se refiere de enormes elaboraciones manufactureras o limitados talleres domesticos, los sistemas de balanceo son esenciales para garantizar un desempeno productivo y libre de paradas.
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  JosephDig السبت, 19 تموز/يوليو 2025 02:23 Comment Link

  analizador de vibraciones
  Sistemas de calibración: clave para el desempeño fluido y eficiente de las máquinas.
  
  En el entorno de la tecnología moderna, donde la eficiencia y la estabilidad del equipo son de suma relevancia, los dispositivos de balanceo juegan un función esencial. Estos aparatos adaptados están creados para equilibrar y asegurar piezas dinámicas, ya sea en herramientas manufacturera, transportes de traslado o incluso en electrodomésticos domésticos.
  
  Para los especialistas en mantenimiento de aparatos y los técnicos, operar con sistemas de equilibrado es fundamental para proteger el funcionamiento fluido y estable de cualquier aparato rotativo. Gracias a estas soluciones innovadoras sofisticadas, es posible minimizar significativamente las vibraciones, el zumbido y la esfuerzo sobre los sujeciones, aumentando la duración de componentes caros.
  
  De igual manera trascendental es el función que juegan los dispositivos de balanceo en la asistencia al cliente. El ayuda técnico y el soporte regular usando estos dispositivos permiten proporcionar prestaciones de óptima nivel, incrementando la bienestar de los compradores.
  
  Para los propietarios de empresas, la financiamiento en equipos de ajuste y dispositivos puede ser clave para mejorar la rendimiento y eficiencia de sus sistemas. Esto es sobre todo significativo para los dueños de negocios que administran reducidas y medianas emprendimientos, donde cada punto es relevante.
  
  Por otro lado, los dispositivos de equilibrado tienen una gran utilización en el campo de la seguridad y el monitoreo de excelencia. Permiten identificar eventuales errores, previniendo reparaciones costosas y averías a los dispositivos. Incluso, los datos generados de estos sistemas pueden usarse para mejorar procesos y potenciar la visibilidad en motores de investigación.
  
  Las zonas de uso de los equipos de balanceo incluyen variadas áreas, desde la manufactura de transporte personal hasta el monitoreo de la naturaleza. No influye si se trata de grandes manufacturas de fábrica o pequeños locales de uso personal, los aparatos de ajuste son fundamentales para asegurar un desempeño efectivo y sin riesgo de interrupciones.
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  gidrokva-7 الجمعة, 18 تموز/يوليو 2025 21:23 Comment Link

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