1,720,988 research outputs found
Stato sanitario e micorrizazione in specie arboree forestali: casi studio in Italia
No full textLa sanità delle piante è notoriamente correlata a elevati livelli di micorrizazione, soprattutto in ospiti strettamente dipendenti dalla simbiosi. Eventuali fattori di stress, abiotici o biotici, agenti di deperimento alterano il bilancio fotosintetico e influenzano, spesso negativamente, l’associazione mutualistica, aggravando così lo stato di sofferenza delle piante. Relativamente alle piante forestali, diversi studi hanno confermato l’intima interazione tra stato sanitario e micorrizazione.
In questa nota si riportano i risultati di nostre indagini, condotte in due Regioni ecologicamente molto diverse, Lazio e Sicilia, rilevando lo stato micorrizico di piante di Fagus sp., Pinus sp. e Quercus sp., soggette o meno a fenomeni di deperimento. All’uopo, in stazioni permanenti ben caratterizzate ecologicamente, campioni di radici sono stati opportunamente prelevati alla base di piante sintomatiche e non e osservati in laboratorio per valutarne sia il livello di micorrizazione totale, sia la percentuale di apici attivi o degradati. I risultati di tali studi mostrano che a stadi di deperimento più evidenti corrispondono, in genere, livelli di micorrizazione ridotti e/o percentuali di apici non attivi più elevate, rispetto alle piante asintomatiche o meno compromesse.
Il costante monitoraggio dello stato di micorrizazione in ambienti forestali può fornire, quindi, utili dati sull’evoluzione dello stato sanitario delle singole piante e dell’intero ecosistema
Pre-exposure to ozone predisposes oak leaves to attacks by Diplodia corticola and Biscogniauxia mediterranea
No full textGambling disorder and imputability: from the nosographic revision to an expanded forensic assessment Disturbo da gioco d'azzardo e imputabilità: dalla revisione nosografica a un assessment forense ampliato
No full textIl disturbo da gioco d’azzardo (DGA nel DSM-5) rappresenta un esempio di come l’evoluzione della ricerca abbia contribuito alla revisione nosografica di condizioni psicopatologiche complesse, quali quelle rappresentate dalle dipendenze comportamentali, al pari di altre patologie della personalità. Di recente il dibattito scientifico e dottrinale ha interessato anche il controverso tema dell’imputabilità, per valutare in che termini tale quadro diagnostico può acquisire valore di “infermità” tale da inficiare le capacità di intendere e di volere di un soggetto in esame. Tuttavia, è sempre necessario traslare le acquisizioni cliniche, e sperimentali nell’esercizio della funzione peritale e di consulenza tecnica. Il processo penale non è il luogo per le sperimentazioni, e l’unico strumento che l’esperto (perito, consulente tecnico) ha per gestire il passaggio delle nuove acquisizioni scientifiche dall’ambito clinico/sperimentale a quello forense è una accurata metodologia di assessment forense per ogni singolo caso in esame. In questa sede si propone un percorso finalizzato all’adeguamento dell’assessment forense rispetto al profilo clinico del gioco d’azzardo patologico, valido esempio dell’evoluzione del reciproco rapporto fra scienze psichiatriche/psicologiche e giurisprudenza, in tema di imputabilità.The gambling disorder (GD in the DSM-5) is an example of how the evolution of research has contributed to the nosographic review of complex psychopathological conditions, such as behavioral addictions, likewise other personality pathologies. Recently, the scientific and doctrinal debate has also affected the controversial issue of imputability, to assess in what terms this diagnostic picture can acquire the value of "infirmity" such as to undermine the ability to understand and the will of a subject under evaluation. However, it is always necessary to translate the clinical, and experimental, acquisitions in the exercise of the appraisal function and of technical consultancy. The proceedings is not the place for the experiments, and the only effective tool available for experts to manage the passage of new scientific acquisitions from the clinical/experimental to the forensic field is an accurate assessment, basing on the methodological criteria, for each individual case under consideration. Here we propose a path aimed at adapting the forensic assessment with respect to the clinical profile of pathological gambling, a valid example of the evolution of the mutual relationship between psychiatric/psychological sciences and jurisprudence, in terms of imputability
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
On the Design of Unconventional Optical Phased Array Antennas
No full textThe design of unconventional optical phased array architectures suitable for implementation within photonic integrated circuits, is addressed. Starting from a set of free-space-optics beam pattern requirements, thinned array layouts are optimized using a multi-objective approach with the double goal of minimize the array architecture complexity, while controlling the radiation pattern side lobes and main lobe beam width. A numerical example is reported showing an illustrative design of the proposed method
Forgotten baby syndrome: Dimensions of the phenomenon and new research perspectives
No full textForgotten Baby Syndrome (FBS) defines the phenomenon of forgetting a child in a parked vehicle. FBS is in constant growth with significant repercussions for the parent, the family and society. Scientific research on the topic is very limited. Literature referring to FBS focuses mostly on the clinical conditions that cause the death of the children involved. However, the circumstances in which such episodes occur are very rarely analyzed. One of the major limit of research in this field is related to the sources of information, which are limited to media in most cases and, therefore, are scarcely reliable. Monitoring the phenomenon in the United States showed that out of a total of 171 cases, 73% concerned children who had been left in the car by an adult. Half of the adults were unaware, or had forgotten the child. In most cases, these episodes involve adults who have perfectly intact both psychic and cognitive functions. Therefore, the dynamics underling the occurrence of such episodes seem to be incomprehensible. At the end of the analysis carried out it can be considered that the cases of death of minors following abandonment in vehicles, are to be considered connected to the normal functioning of the Working Memory (WM) functionality. The link between WM deficits and frankly psychopathological conditions remains residual and it still requires careful differential screening. Finally, the hypothesis of the occurrence of transient and/or acute circumstances of exogenous origin, which may affect WM's performance, remains to be considered. Considering these deaths as events that, in most cases, are of criminal relevance they may require the intervention of psychologists and psychiatrists during the process. In this prospective the assumption of a broader point of view can have a significant impact on the descriptive capacity in clinical-forensic field
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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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
- …
