Roger E. Kirk The Baldwin Piano Company, Cincinnati, Ohio Resumen: Se afinaron las cuerdas correspondientes a los unísonos de un piano de cola para obtener cinco variedades de “unísonos”. Las variedades consistieron en la generación de una afinación “sin batidos”, y una subida en la frecuencia de afinación de la cuerda más aguda de las tres del grupo de unísonos conjuntamente con una bajada de la frecuencia de afinación de la cuerda del piano más grave con una diferencia de 0.5, 1, 2 y 3 céntimos de variación en relación a la cuerda central. Se hicieron grabaciones del piano afinado según dichas variaciones en una cinta magnética. Se les presentaron estas grabaciones, en forma de una prueba de comparación de preferencia de dos a dos, a sujetos, tanto con formación musical como sin ella. Las preferencias de afinación predilectas para los grupos de unísonos de tres cuerdas, tras su grabación y reproducción desde la cinta magnética, fueron de 1 y 2 céntimos de desviación máxima entre cuerdas.
Christine Lagarde was reelected earlier this year to a second five-year term heading the International Monetary Fund (IMF), the organization that serves as economic advisor and backstop for 188 countries. When she took over in 2011, the world economy was still recovering from the financial crisis, and the IMF from an institutional one.
December 2016. From University of Helsinki. The results are just published in the journal Nature Communications. We still know fairly little about the specific impacts of climate change and human activity, such as nutrient enrichment of waterways, on broad geographical scales. Researchers from the Department of Geosciences and Geography at the University of Helsinki, the Finnish Environment Institute, and the Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences have studied hundreds of microcosms in mountainous regions with the aid of natural temperature gradients in the studied areas, while modifying the enrichment level in field tests. The results indicate that the bacteria in elevated tropical areas are similar to e.g. those in arctic areas. As a result of changes in temperature and aquatic enrichment, significant alterations occur in the microcosms, and as the enrichment increases, biodiversity reduces, says Associate Professor Janne Soininen.
EI Museo del Instituto de Zoología Agrícola “Francisco Fernández Yépez” (MIZA), es una institución dedicada al estudio de la biodiversidad tropical. Tenemos la convicción de que el conocimiento de nuestro patrimonio biológico está íntimamente relacionado con su preservación y uso sostenible, es por ello que la educación ambiental es una herramienta vital para formar ciudadanos conscientes y protectores de nuestro patrimonio biológico.
Breaking up the rainforest into small, isolated patches is forcing more species to live at the forest edge and putting those that are dependent on the forest core at risk. Research published today in the academic journal Nature highlights how biodiversity is changing as a result of deforestation -- forcing some species to the brink of extinction while others flourish in the changing environment. Collecting data for over 1,500 forest vertebrates, the research team led by Newcastle University, UK, and Imperial College London, found that 85% of species are now being impacted by this forest fragmentation.
FACEBOOK AND GOOGLE are teaming up to speed Internet traffic between North America and Asia. Today, alongside partners in Asia, the two Internet giants announced they will build the longest and highest capacity undersea fiber-optic cable between the two continents. Once completed, the Pacific Light Cable Network—PLCN for short—will stretch 8,000 miles from Los Angeles to Hong Kong with an estimated capacity of 120 terabits-per-second. That’s about twice the capacity of the Oregon-to-Japan cable “Faster,” which Google recently launched with several telco partners. Construction of the new cable will begin this year, and it should come online in 2018.
The traditional manufacturing process, for example, of a sub-assembly or in layman´s terms a part for a product, involves taking into account "Design for Assembly" (DFA) and "Design for Manufacturing" (DFM). Any major design acceptance involves thoroughly evaluating DFA and DFM. With 3D printing, the traditional "design->tool->mold- >prototype->tool->mold-> prototype->make->assemble" model is thrown out. The new paradigm is about "design-print-prototype-test-tool-mold-make". Since most of the tooling and mold requirements are postponed until the final iteration, the leadtime and costs of prototyping get reduced by an order of magnitude.
The Karakoram Highway (often abbreviated to KKH and sometimes transliterated as Karakorum) is the highest paved international road in the world; it connects Western China and Pakistan. It is one of the very few routes that cross the Himalayas and the most westerly of them. Historically, this was a caravan trail, one branch of the ancient Silk Road. More recently, the Chinese and Pakistani governments have built a highway. A view from the highway near Passu, Pakistan. The name is derived from the Mongolian for Black Range, when the Mongolians had their great empire, and was adopted later by their successor dynasty, the Mughals, who ruled India for many centuries. In recent years the highway has become an adventure tourism destination and ranked as the third best tourist destination in Pakistan by The Guardian. It is the highest border crossing in the world, at an elevation of over 4,800 metres (roughly 16,000 feet) in the Khunjerab Pass at the border. For comparison, Mont Blanc, the tallest mountain in Western Europe, is 4810m and Mount Whitney, the highest point in the 48 contiguous US states, is 4421m.