1,721,650 research outputs found
Potere marittimo è economia
No full textUn’economia sempre più globaliz- zata si alimenta grazie alle rotte ma- rittime, attraverso le quali si decidono i destini delle bilance com- merciali degli Stati. Mai come oggi diventa importante per una nazione, dal punto di vista strategico, disporre di forti e organizzate Marine militari e mercantili. Tramite esse la tutela degli interessi nazionali assume una proiezione internazionale e consente di salvaguardare le forniture per il si- stema produttivo, i clienti delle im- prese e proteggere gli scambi. Il Potere Marittimo italiano si esprime dunque non solo in una dimensione mediterranea, ma su una scala pla- netaria nella quale segue e salva- guarda gli interessi nazionali
Resolvent and logarithmic residues of a singular operator pencil in Hilbert spaces
Full text linkThe present paper considers the operator pencil A(λ)=A0+A1λ, where A0,A1≠0 are bounded linear mappings between complex Hilbert spaces and A0 is neither one-to-one nor onto. Assuming that 0 is an isolated singularity of A(λ) and that the image of A0 is closed, certain operators are defined recursively starting from A0 and A1 and they are shown to provide a characterization of the image and null space of the operators in the principal part of the resolvent and of the logarithmic residues of A(λ) at 0. The relations with the classical results based on ascent and descent in [10] are discussed. In the special case of A0 being Fredholm of index 0, the present results characterize the rank of the operators in the principal part of the resolvent, the dimension of the subspaces that define the ascent and descent, the partial multiplicities, and the algebraic multiplicity of A(λ) at 0
Suffering As the Path to Acceptance: Parents of Gay and Lesbian Young People Negotiating Catholicism in Italy
No full textThis article investigates the experiences of parents of gay men and
lesbians (GL) as they negotiate the influential Catholic discourse on
homosexuality in Italy, and their Catholic belonging and practice.
The analysis is based upon in-depth interviews with 46 parents of
gay and lesbian people. We explore how parents who are heavily
involved in the religious community negotiate their role within it,
but also how, more generally, parents frame their notions of what it
means to be lesbian or gay in relation to Catholic discourse. Parents
draw upon different, and often seemingly contradictory, cultural
repertoires in order to combine, negotiate, or integrate what public
discourse constructs as irreconcilable positions: acceptance of gay
and lesbian lives and identities and Catholic belonging. The notion
of the homosexual as being destined to undergo suffering provides
room for acceptance of their child’s sexual identity whilst preserving
heteronormative assumptions. This frame constitutes an alternative
to rejection, which is at odds with parents’ ideas of the family as
being based on unconditional love. It also provides a bridge with
therapeutic culture and narratives of liberation from suffering that
inform, especially, middle-class family relations and the cultural
resources available to the
Inversion of regular analytic matrix functions: local Smith from and subspace duality
No full textThis paper analyzes the relation between the local rank-structure of a regular analytic matrix function and the one of its inverse function. The ‘local rank factorization’ (lrf) of a matrix function is introduced, which characterizes extended canonical systems of root functions and the local Smith form. An interpretation of the lrf in terms of Jordan chains and Jordan pairs is provided. Duality results are shown to hold between the subspaces associated with the lrf of the matrix function and the one of its reduced adjoint
Regional muscle features and their association with knee extensors force production at a single joint angle
Full text linkThis study aimed (i) to investigate the role of regional characteristics of the knee extensors muscles (vastus lateralis: VL, vastus intermedius: VI and rectus femoris: RF) in determining maximum-voluntary force (MVF); and (ii) to understand which regional parameter of muscle structure would best predict MVF. Muscle architecture (e.g., pennation angle and fascicle length), muscle volume (Vol), anatomical (ACSA) and physiological cross-sectional-area (PCSA) were measured in the proximal (0-33% of the muscle length), middle (33-66% of the muscle length) and distal (66-100% of the muscle length) portions of each muscle in fifteen healthy males using ultrasound and Magnetic Resonance Imaging (MRI). Knee extensors force was calculated in isometric condition at a single knee joint angle of 90 degrees. Regional ACSA, Vol and PCSA were correlated with MVF production. Regional muscle geometry showed no significant correlations with MVF. Among regions, the middle portion of each muscle was largely correlated with MVF compared to all the other regions (distal and proximal). To understand which regional structural parameter best predicted MVF, a stepwise multiple linear regression was performed. This model showed a significant explanatory power (P < 0.001, R-2 = 0.76, adjusted R-2 = 0.71), including muscle Vol collected in the mid portions of VL and RF. Even if no significant differences were reported between Vol, PCSA and ACSA in determining MVF, our results showed that the RF and VL volume collected in the middle portion of the muscle length are strong determinants of MVF produced by the knee extensors at 90 degrees joint angle
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
103. Sculture greche e romane di Cirene. Scritti di L. Polacco, L. Beschi, F. Bertocchi, G. Traversari, E. de Franchi, M. T. Fortuna, presentati da Carlo Anti
No full textChamoux François. 103. Sculture greche e romane di Cirene. Scritti di L. Polacco, L. Beschi, F. Bertocchi, G. Traversari, E. de Franchi, M. T. Fortuna, presentati da Carlo Anti. In: Revue des Études Grecques, tome 77, fascicule 366-368, Juillet-décembre 1964. pp. 579-580
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