Search results for "Experimental research"
showing 8 items of 58 documents
Experimental Research on Technological Parameters Optimization of Natural Gases
2015
The paper contains a modeling application with the help of factorial experiments of influence variations of some parameters of natural gases over the hourly flow delivered towards population. In order to completely and correctly draft the experiment we followed and highlighted the objective functions of the process to be analyzed, and then there were identified the factors that influence the objective function to be analyzed. In the end the experimental data was processed and solutions were proposed.
PENGARUH MODEL SNOWBALL THROWING TERHADAP HASIL BELAJAR SISWA KELAS V PADA MATA PELAJARAN PKn DI SD INPRES XX SOLOT
2020
ABSTRACTThis study aims to determine student learning outcomes by using the snowball throwing modelon PKn subjects in the diversity of ethnic groups in Indonesia towards the learning outcomes ofstudents in class V SD Inpres XX Solot Nita District, Sikka Regency. This research is aquantitative study with the tipe of experimental research method used in this study using thepre-experimental (nondesings) type one-group pretest-design method. The population andresearch sample were all students of class V which numbered 14 students. The test instrumentused to determine is in the form of a pre-test and post-test. Based on the learning outcomes thevalues obtained the average experimental class in t…
Autonomy and responsibility as key values for the elaboration of rules of coexistence in the ESO
2012
Algunas de las cuestiones que se plantean en el artículo son las siguientes: ¿Son los alumnos capaces de organizar el comportamiento y la convivencia en el aula? ¿Están capacitados para elaborar sus propias normas? o ¿Solamente se trata de un planteamiento teórico que resulta inviable de llevar a la práctica? En todo caso, ¿Qué nivel de responsabilidad y autonomía pueden asumir en el funcionamiento del aula? El aprendizaje de normas en el aula constituye una experiencia real, muy próxima a la experiencia y los intereses de los alumnos, que permite trabajar valores como la responsabilidad, el respeto, la participación, el diálogo y la democracia. A su vez les enseña a participar en asambleas…
Experimental test on the use of MS-222 for ostracod anaesthesia: concentration, immersion period and recovery time
2010
Anaesthesia of animals may be useful for different purposes, particularly for veterinary reasons or in experimental research, for manipulation or treatment of immobilized but alive animals. Its use in crustaceans is not uncommon, but it has never been described for Ostracoda. We provide brief and preliminary guidelines on the use of the tricaine mesylate (MS-222) on the widespread freshwater ostracod Eucypris virens and we show that this compound is an effective anaesthetic used as a bath treatment at minimum concentrations of 500 mg L-1. This value is considerably higher than that recommended for other aquatic animals like fish. Recovery time, ranging from 5 to 15 minutes, is mostly determ…
Evaluation of efficacy and biocompatibility of a novel semisynthetic collagen matrix as a dural onlay graft in a large animal model
2011
Background Semisynthetic collagen matrices are promising duraplasty grafts with low risk of cerebrospinal fluid (CSF) fistulas, good tissue integration and minor foreign body reaction. The present study investigates the efficacy and biocompatibility of a novel semisynthetic bilayered collagen matrix (BCM, B. Braun Aesculap) as dural onlay graft for duraplasty. Methods Thirty-four pigs underwent osteoclastic trepanation, excision of the dura, and placement of a cortical defect, followed by duraplasty using BCM, Suturable DuraGen™ (Integra Neuroscience), or periosteum. CSF tightness and intraoperative handling of the grafts were evaluated. Pigs were sacrificed after 1 and 6 months for histolo…
Peripheral Changes in Blood Circulation during Autogenic Training and Hypnosis (Results of Experimental Research)
1969
In addition to the immobilization of the limbs and the associated sensation of heaviness, most patients in a hypnotic trance also experience a sensation of warmth. This subjective feeling is probably accompanied by increased skin temperature. Attempts have been made in the past to record skin temperature objectively. Most methods of measurement, however, are so defective that they have only rarely proved at all reliable. Hensel (1955, 1964) and his colleagues have described seven variables whose range is so great that the statistical evaluation of such measurements becomes impossible, even though the data may be valid in individual cases. Furthermore, graphic recording is also impracticable…
Tempting to Tag : An Experimental Comparison of Four Tagging Input Mechanisms
2010
Tagging helps achieve improved indexing and recommendation of resources (e.g., videos or pictures) in large data collections. In order to reap the benefits of tagging, people must be persuaded to label the resources they consume. This paper reports on a study in which four different tagging input mechanisms and their effect on users’ motivation to tag were compared. The mechanisms consisted of a standard tag input box, a chatbot-like environment, a bookmarking mechanism, and a “tag and vote” game. The results of our experiment show that the use of the nonstandard tagging input mechanisms does not affect users’ motivation to tag. In some instances tagging mechanisms were found to distract us…
Nascita e sviluppo della ricerca empirica in campo didattico in Italia
2015
Si ritiene che la ricerca didattica in Italia si sia riavviata intorno al 1950 per il contatto con le scuole statunitensi, per la diffusione delle opere di Dewey e per la nascita dell’Istituto Superiore di Pedagogia della congregazione salesiana. Si ricostruisce il periodo pioneristico della ricerca empirica in campo didattico con il contributo di Calonghi e Visalberghi. Si segnalano alcuni eventi significativi che, intorno alla metà degli anni Settanta, contribuirono all’affermazione della Didattica come scienza dell’insegnamento-apprendimento. Si indicano le principali linee di ricerca empirica in Didattica presenti nell’attuale panorama scientifico italiano.