101,881 research outputs found
Gordius villoti (Nematomorpha) life cycle in relation with caddis fly larvae
No full textThe relationships between Gordius villoti Rosa and Allogamus auri-collis Pictet larvae are described. The horsehair worms and host life cycles have been investigated in laboratory and field conditions and aspects of their morphology and behaviour are discussed
1.55 μm Optical short pulse generation at 10-GHz repetition rate, using a mode-Locked Hybrid Distributed Bragg Reflector (ML-HDBR) Laser Source
No full textFeasibility study of a passive pneumatic exoskeleton for upper limbs based on a mckibben artificial muscle
No full textExoskeletons are wearable structures or systems designed to enhance human movement and to improve the wearer’s strength or agility, providing auxiliary support aimed at reducing efforts on muscles and joints of the human body. The aim of this work is to discuss on the feasibility of a new passive upper limb exoskeleton, based on the use of pneumatic artificial muscles, and characterized by extreme lightness, cheapness, and ease of use. A broad overview of the state of the art on current exoskeletons is introduced. Then the concept of the new device is presented, and different transmission architectures between pneumatic muscle and limb are discussed. The study demonstrates the potential effectiveness of such a device for supporting an operator in heavy work condition
A passive upper-limb exoskeleton for industrial application based on pneumatic artificial muscles
No full textIn recent years, exoskeletons are increasingly spreading into the industrial manufacturing sector to improve productivity and to reduce the incidence of work-related musculoskeletal diseases. The aim of this paper is to present a 2 degrees of freedom (DoF) passive upper-limb exoskeleton, consisting of two McKibben pneumatic artificial muscles (PAMs), and used for assisting workers during activities that require them to keep their hands in a sustained position over the head for a long time. Simulations are performed to test two different commercial PAMs and two different designs of the transmission system used to convey the traction force exerted by the pneumatic muscles to the limb; then the results are discussed. A preliminary assembly of the exoskeleton is also presented. The study confirms that PAMs can be used to realize a passive upper-limb exoskeleton for industrial application and that appropriate working space can be obtained with an accurate design of the transmission system
Bibliographie Hilarion G. Petzold 1958 – 2009 mit Anhang als Einführung
No full textDieses Archiv enthält die Gesamtbibliographie der Werke des Autors nebst einiger Texte „Über H. G. Petzold“ im Schlussteil der Bibliographie sowie einen Anhang mit einer Einführung in die Architektur des Werkes in seinem wissenslogischen Aufbau als Ausarbeitung seines „Tree of Science Modells“ (2007).This archive contains the complete bibliography of the author and some texts about H. G. Petzold, moreover an epilogue with an introduction to the architecture of the works in its epistemological structure and composition and as an elaborations of Petzold’s „Tree of Science Modell (2007).https://www.fpi-publikation.de/polyloge/01-2009-petzold-h-g-gesamtbibliographie-h-g-petzold-1958-2009-updating-november2009/peerReviewedpublishedVersio
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Título: Il Costume antico e moderno di tutti i popoli
No full textv. 1-3: Della Grecia /Gironi, R; v. 4: Dell'impero Ottomano, Degli Slavi moderni /Magnetti, C.; v. 5: Degli Etruschi /Magnetti, C. , Dei Romani /Levati, A.; v. 6: Della Spagna e del Portogallo /Gironi, R., Dei Francesi /Ferrario, G.; v. 7 t. 1: Delle Isole britanniche /Levati, A., Su la Scandinavia /[Ferrario, G. ?]; v. 7 t. 2: Degli Ungheresi /Rossi, F., Della Russia europea, Sulla Polonia, L'Olanda /Ferrario, G.; v. 8 (3 t.): Costume degl'Italiani /[Ferrario, G. ?]; v. 9 t. 1: Degli Svizzeri /Levati, A., Degli antichi Germani /Bossi, L.; v. 9 t. 2: Della Germania /[Bossi, L. ?]; v. 10: Storia ed analisi degli antichi romanzi di cavalleria /Ferrario, G
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