1,720,981 research outputs found
A Brokering-Based Interaction Protocol for Dynamic Resource Allocation in Steel Production Processes
No full textSteel manufacturing involves a series of dynamic processes that require an efficient and effective management of the plant resources. The coordination and the allocation of the resources is an important aspect for ensuring a continuous production flow as well as a good quality of the final products, especially when unexpected events can compromise the overall system performance. This paper presents an agent-based protocol for dynamic resource allocation in order to establish collaboration among agents within steel production processes. The proposed protocol is based on the brokering mechanism and is designed in order to solve the problem of the concurrency, which arises when several agents are interested in using the same resources, and to handle dynamic changes, such as unexpected events that can affect the resource allocation process. Experimental results show how the designed protocol allows the agents coordination by guaranteeing the use of the resources and the correct flow of the production
A hybrid peer-to-peer architecture for agent-based steel manufacturing processes
No full textThe new generation of steel manufacturing processes shaped by Industry 4.0 are more digitalized, networked, flexible and adaptable. Production processes use distributed information and communication structures, are more autonomous and capable to react to dynamic changings of the environment. Agent-based systems represent a paradigm, which is well suited to address these new generation of smart processes. The paper presents a hybrid peer-to-peer architecture for agent-based steel production processes. The architecture exploits a central database server for storing and retrieving updated information from peers about a cold rolling manufacturing process. The cold rolling process is modeled as a multi-agent system composed of four types of autonomous agents, each playing a different role in the steel production chain. Agents are designed to take autonomous decisions, and to coordinate and collaborate with each other, by ensuring the dynamic plant resources allocation even if unforeseen interruptions of the production flow may happen. The proposed approach is designed for the steel strip manufacturing process but can be easily readapted to any flat production process. The test of the design multi-agent system with the proposed architecture is supported though the simulation of the dynamic plant resources allocation under changing dynamic conditions
TRATTAMENTO ANALGESICO OMOTOSSICOLOGICO DEL DOLORE POSTOPERATORIO IN PAZIENTI SOTTOPOSTE A TAGLIO CESAREO
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TRATTAMENTO OMOTOSSICOLOGICO ANTIINFIAMMATORIO ED ANTISETTICO NELLE PAZIENTI SOTTOPOSTE A TAGLIO CESAREO
No full textpubblicazione in corso di stamp
Florid papillomatosis of the male nipple
No full textThe authors present a case of an adenoma of the nipple in a 61-year-old man who reported a 6-month history of nodularity and itching at his left nipple. Examination revealed a firm, well-defined, vascularized tumor measuring .8 cm that altered the normal anatomy of the nipple. A total excision of the nipple and areola was performed. The histological diagnosis was adenoma of the nipple. No recurrent tumor has been observed during 4 years of postoperative follow-up. An adequate excision of the lesion is curative without any risk of recurrence or development of malignancyThe authors present a case of an adenoma of the nipple in a 61-year-old man who reported a 6-month history of nodularity and itching at his left nipple. Examination revealed a firm, well-defined, vascularized tumor measuring .8 cm that altered the normal anatomy of the nipple. A total excision of the nipple and areola was performed. The histological diagnosis was adenoma of the nipple. No recurrent tumor has been observed during 4 years of postoperative follow-up. An adequate excision of the lesion is curative without any risk of recurrence or development of malignancy. © 2010 Elsevier Inc
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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