Category Archive Bollettino aib 2002 n. 3 p. 367-368


Bollettino aib 2002 n. 3 p. 367-368

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Claudio Gnoli Works by subject [sort by year] [sort by Gray code] [legend]. P Knowledge Organization Research Group Secretariado de Publicaciones Palazzo delle Stelline P Come mi vuoi, enumerativa o sintetica?

Bollettino AIB.

P Come mi vuoi, relazionale o aperto? Documenti — Il mondo delle biblioteche in rete — AIB: Biblioteca civica Geisser P — Dipartimento di Matematica Nuovi strumenti per nuovi cataloghi. Toscana", "Biblioteca nazionale centrale di Firenze": Firenze Congresso nazionale. Gruppo di ricerca sull'indicizzazione per soggetto": Roma Collegio San Carlo Contributi — AIB: Scuola superiore di Lingue moderne per interpreti e traduttori. Corso di laurea in Traduzione e interpretazione": anno accademico Sessione 1.

Februar [Knowledge storage in digital space: persistence, availability, semantic interoperability]. Istituto per i beni artistici, culturali e naturali: Bologna. Villa Levi CEDOC: www. Il mondo delle biblioteche in rete — AIB Il mondo delle biblioteche in rete. Orientamento — AIB www. Dipartimento di Matematica. Rete 2 Redazione", "AIB. Dipartimento di matematica Serie 3.

Dove comincia l'Appennino. David Barbaglia — Associazione italiana biblioteche", che ha mantenuto fino al I legami conducono ai testi integrali eventualmente disponibili. Non sono compresi accessi secondari o rinvii; nel dubbio, usare la funzione di Ricerca del browser. The journal was born, in its paper edition, in with the name "Notizie AIB: Bollettino dell'Associazione italiana biblioteche"; in it changed the name in "Bollettino d'informazioni" and mantained it until In the new series, with the ongoing name "Bollettino AIB", began; in the same year the electronic edition of the journal began.

Links point to full texts, if available. Added entries or references are not provided; if in doubt, use the Find command of your browser. The value of public libraries: a methodological discussion and empirical study applying the contingent valuation method. Oslo: Unipub, Rec.

La biblioteca digitale : definizioni, ingredienti e problematiche

Trickey and Susi Woodhouse. London: Library Association, Rec. Competing with knowledge: the information professional inthe knowledge management age Rec. Performance measurement in library and information services. London: Aslib, Rec. Le metier de documentaliste. Paris: Editions du Cercle de la librairie, Rec.

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Paris: Cercle de la librairie, Rec. Access, ownership and resource sharingSul H. Lee editor. Access servicesedited by Gillian M.The evolution of multicellularity has occurred in diverse lineages and in multiple ways among eukaryotic species.

For plants and fungi, multicellular forms are derived from ancestors that failed to separate following cell division, thus retaining cytoplasmic continuity between the daughter cells. In networked organisms, such as filamentous fungi, cytoplasmic continuity facilitates the long-distance transport of resources without the elaboration of a separate vascular system.

Nutrient translocation in fungi is essential for nutrient cycling in ecosystems, mycorrhizal symbioses, virulence, and substrate utilization. It has been proposed that an interconnected mycelial network influences resource translocation, but the theory has not been empirically tested.

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We also show that the ability to share resources and genetic exchange between colonies via hyphal fusion is very limited in mature colonies, in contrast to in young colonies and germlings that readily share nutrients and genetic resources. Thus, the ability to share resources and genetic material between colonies is developmentally regulated and is a function of the age of a colony. This study highlights the necessity of hyphal fusion for efficient nutrient translocation within an N.

The transition from unicellular to multicellular organisms has occurred on multiple occasions in diverse lineages over considerable evolutionary time 2838 While an initial adaptive advantage may have accrued simply from being larger, multicellular organisms subsequently developed increased differentiation and specialization, leading to a more efficient division of labor 8. Multicellularity may have arisen by either the aggregation of individual cells to form a colony or by the failure of daughter cells to separate following division.

Comparisons of unicellular animals and their multicellular relatives support the view that multicellularity is associated with expansion of the genetic families involved in cell adhesion, cell-cell signaling, and cell differentiation In contrast, multicellular plants and fungi are derived from ancestors that failed to separate following cell division, providing an opportunity to retain cytoplasmic continuity between daughter cells Thus, plant cells are linked by tissue-specific patterns of plasmodesmata 4147while fungi are either coenocytic or have perforated septa that allow intercompartmental exchange In ascomycete and basidiomycete fungi, cytoplasmic continuity is increased further through hyphal fusions anastomosesleading to an interconnected mycelial network 93156 — Network formation is hypothesized to be an adaptation to foraging, particularly where resources have a heterogeneous distribution in time and space, or to allowing a more rapid capture, exploitation, and defense of new territory.

Network architecture is remodeled during growth, branching, and fusion 32122making it highly responsive to variations in resource availability or in the amount of damage incurred 7 In networked organisms, such as filamentous fungi, cytoplasmic continuity facilitates long-distance transport of resources at speeds much faster than those with diffusion alone through cytoplasmic streaming 265073 or mass flow 14 without the elaboration of a separate vascular system These data suggest that the architecture of a colony can have an important influence on the physiological state, organelle distribution, and nutrient translocation within the mycelium While self-fusion within a colony influences network architecture, different colonies can potentially share resources via hyphal fusion events 17212533 The molecular and genetic mechanisms involved in hyphal fusion have been studied extensively in the filamentous ascomycete fungus Neurospora crassa 1939 Fusion occurs when N.

Many N. The soft so locus encodes a filamentous ascomycete-specific protein required for hyphal fusion, dynamic communication between germlings, and septal plugging after injury 16 The N.

bollettino aib 2002 n. 3 p. 367-368

These mutants bring the degree of fusion, and therefore the network architecture, under experimental control, making it feasible to test the importance of hyphal fusion on nutrient transport, genetic mixing, and network function.

Previous work on translocation in fungi, particularly in basidiomycete species, has focused on wild isolates; the requirement of an interconnected network for nutrient translocation and colony interactions has not been tested.

We therefore evaluated whether network formation in the N. We investigated further whether fusion that is associated with colony developmental age influences resource sharing between colonies, and we evaluated its potential impact on generating genetic heterogeneity. We used the his-3 :: H1-dsRed and his-3 :: Prdi1-rdisgfp strains 53 for fluorescence imaging of the colonies. The strains were grown on Vogel's minimal medium VMM 74 with the required supplements. To obtain inoculum plugs and strips, strains were grown from conidia on plates of VMM Conidia were harvested by adding 1 ml of sterile water to a tube and vortexing for 30 s.

Twenty microliters of conidial suspension was streaked in a line across the middle of a by cm petri plate filled with VMM. Sections of the colony that were 2 mm wide by 2 mm deep by 22 cm long were taken approximately 2 to 6 mm behind the periphery of the colony and used as inoculum strips.

Subsequently, these strips were put on glass slides placed on top of a nonionized Nytran nylon membrane Whatman on top of low-sucrose VMM agar prepared as described above. Ten replicates of each strain were prepared.Numerous and frequently-updated resource results are available from this WorldCat.

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bollettino aib 2002 n. 3 p. 367-368

Advanced Search Find a Library. Your list has reached the maximum number of items. Please create a new list with a new name; move some items to a new or existing list; or delete some items. Your request to send this item has been completed. APA 6th ed.Bianchini, Carlo. AIB studi 52 3. Bianchini, Carlo, e Mauro Guerrini. Biblioteche oggi, n. Introduzione a RDA: linee guida per rappresentare e scoprire le risorse.

Milano: Bibliografica. Danskin, Alan, e Katharine Gryspeerdt. Forassiepi, Simone. Garcia, Ageo. Guerrini, Mauro, a c. Principi di catalogazione internazionali: una piattaforma europea? Roma: AIB. Petrucciani, Alberto. International cataloguing and bibliographic control 39 2 : 23— Pinedo, Isa De, e Alberto Petrucciani.

Bollettino AIB 42 3 : — Quaderni della Biblioteca nazionale centrale di Roma. Roma: Biblioteca Nazionale centrale di Roma. Smiraglia, Richard P. International cataloguing and bibliographic control 31 2 : 26— Tillett, Barbara. Font Size. Follow us.Ridi, Riccardo La biblioteca digitale : definizioni, ingredienti e problematiche.

Bollettino AIB, vol. The concept of digital library must not be confused with those, correlated but different, of virtual library and hybrid library. The digital library is rather the borderline case of an hybrid library in which analogic documents and non-electronic services are set to zero. Among the documents of the digital library a distinction must be done between the primary digital collection, made up of documents that were originally published in electronic format, and the secondary digital collection, made up of subsequent digitalizations of original analogic documents.

The ingredients of every digital library are on the one hand its documentary collections and on the other the services supplied to its users. Among the main typologies of documents are the e-journals, the e-books, the open archives, the databases and the opacs. For every typology the main features and the fundamental problems under discussion nowadays are described. In particular, with regard to opacs, the article deals with the problem of how to insert in them the descriptions of the RER remote electronic resources and of the LER local electronic resources owned or selected by the library.

Moreover the main services of the digital library are presented: virtual reference service, print on demand, document delivery, acquisitions, loan, sign system, marketing, electronic reserve, data mining, discovery of plagiarism, selected dissemination of informations and documents, measurement of collection use, and communication among users. Among the open issues related to the digital libraries, some are singled out as particularly crucial and therefore examined closely: access, conservation and preservation, standardization, interoperability, cooperation, evaluation, interfaces and information retrieval copyright, privacy, and metadata, both descriptive and semantic, and administrative and managerial.

The quantitative and qualitative explosion of digital information resources makes it indispensable to strengthen the tools, conceptual and technological, necessary to amalgamate and use at best the many ingredients of the digital library. The paper closes with a rich bibliography, partially annotated: items in Italian and English, particularly from tohalf of which available free on the web.

Il concetto di biblioteca digitale non va confuso con quelli, correlati ma distinti, di biblioteca virtuale e di biblioteca ibrida. La biblioteca digitale costituisce, piuttosto, il caso limite della biblioteca ibrida in cui documenti analogici e servizi manuali siano ridotti a zero.

Fra i documenti della biblioteca digitale occorre distinguere fra la collezione digitale primaria, costituita da documenti che sono stati pubblicati originariamente in formato elettronico e la collezione digitale secondaria, costituita dalle digitalizzazioni di originali analogici effettuate successivamente.

Fra le principali tipologie di documenti si ricordano gli e-journal, gli e-book, gli open archive, le banche dati e gli opac. Di ciascuna tipologia si forniscono le principali caratteristiche e si illustrano le problematiche attualmente sul campo.

In particolare, relativamente agli opac, si affronta la questione di come inserirvi la descrizione delle RER risorse elettroniche remote e delle REL risorse elettroniche locali possedute o selezionate dalla biblioteca.

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Piacenza: La tribuna, Firsov, I. Brun, Eureka: repertorio di collegamenti ipertestuali per la ricerca in rete"Biblioteche oggi", a. Burioni ricerche bibliografiche"Biblioteche oggi" a. Mecocci, cura redazionale di E. Boretti, Firenze, Olschki,p.

Provincia di Firenze: Cultura e memoria, 7. Asta, E. Boretti, C.

Bollettino AIB.

Intervista ad Alberto Chetia cura di Elena Boretti, "Bibelot: notizie dalle biblioteche toscane", a. Documento per le biblioteche pubblichea cura di Elena Boretti"Bibelot: notizie dalle biblioteche toscane", a. Danesi, E. Vivoli, Pistoia, Edizioni del Comune,35p. Con la partecipazione, fra gli altri, di Elena Boretti.

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Costanzo Capitani, E. Boretti, M. Rosati, La gestione dell' informazione e l'utilizzo di InternetFirenze, Ifnia,pp. Dell' Orso, "Biblioteche oggi", a. Contini e A. Martini, "Biblioteche oggi", a.

bollettino aib 2002 n. 3 p. 367-368

Le biblioteche pubbliche di fronte alla sfida di Internet"Biblioteche oggi", a. Quaderni di lavoro n. Elena Boretti.

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Mezim Posted on10:12 pm - Oct 2, 2012

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