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Bibliographic Details
Main Author:	Alejandro Gangui
Format:	Artículo científico
Language:	es
Published:	Sociedade Brasileira de História da Ciência 2022
Subjects:	Historia Ramón G Loyarte ciencia y política Instituto de Física de La Plata revistas internacionales de reseña científica
Online Access:	https://www.redalyc.org/articulo.oa?id=752081314005
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Física, investigación científica y sociedad en la Argentina de 1920-1930 Alejandro Gangui Historia Ramón G Loyarte ciencia y política Instituto de Física de La Plata revistas internacionales de reseña científica Analizamos las investigaciones científicas llevadas a cabo en el Instituto de Física de la Universidad Nacional de La Plata en la primera mitad del siglo XX, y el contexto cultural y social en el que estuvieron inmersas. Nos concentramos especialmente en las actividades desarrolladas por el físico argentino Ramón G. Loyarte, quien fue una personalidad emblemática del mundo científico, educativo, cultural y político de la Argentina en esos años. Discutimos sus trabajos más trascendentes en física experimental y mecánica cuántica, sus actividades de gestión y promoción de la ciencia y el impacto internacional de sus propuestas científicas, así como también el origen de las polémicas que desataron sus ideas más osadas. Para estos últimos tópicos empleamos una herramienta novedosa: examinamos los comentarios sobre sus trabajos publicados en prestigiosas revistas internacionales de reseña científica, que ayudan a comprender de manera más cabal y contemporánea los descubrimientos de Loyarte. 2022 artículo científico 1983-4713 https://www.redalyc.org/articulo.oa?id=752081314005 es http://www.redalyc.org/revista.oa?id=7520 Revista Brasileira de História da Ciência application/pdf Sociedade Brasileira de História da Ciência Revista Brasileira de História da Ciência (Brasil) Num.2 Vol.15

if (filemtime($filename) + $maxlifetime < time()) { unlink($filename); $count++; } } return $count; } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ protected function saveSession($sessId, $data): bool { $sessFile = $this->path . '/sess_' . $sessId; if ($handle = fopen($sessFile, 'w')) { $return = false; // Lock the file for exclusive access to avoid issues with multiple // processes writing session simultaneously: if (flock($handle, LOCK_EX)) { $return = fwrite($handle, $data); // Make sure that there's no trailing data by truncating the file to // the correct length: ftruncate($handle, strlen($data)); fflush($handle); flock($handle, LOCK_UN); } fclose($handle); if ($return !== false) { return true; } } // If we got this far, something went wrong with the file output... // It is tempting to throw an exception here, but this code is called // outside of the context of exception handling, so all we can do is // echo a message.

// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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