Search results for "Nature"

2020

Arts-based practices can support sustainability, combined with research that points out needs for intervention. We practiced environmental sensitivity and dialogic art with fifth-grade school pupil...

Innovative and Applied Research in Biology: Proceedings

2022

The collection contains SCIENTIFIC articles on the topics of the LU 80 conference reports. The main focus is on innovative and applied research in biology and interdisciplinary fields.

Imagen de ciencia de estudiantes de Magisterio

2015

En este artículo se indaga en la imagen de ciencia de estudiantes de Magisterio de distintas especialidades, posibles futuros docentes de disciplinas científicas en la etapa de Educación Primaria (6-12 años). La investigación, en la que han participado 1260 estudiantes, se realizó durante tres cursos académicos comprendidos entre 2008 y 2011. Basado en el análisis de un cuestionario extraído del INPECIP, este estudio arroja como principales conclusiones que los participantes no poseen un conocimiento claro de cómo se genera y evoluciona el conocimiento científico. Grosso modo, la imagen de ciencia no depende del sexo, de si sus estudios preuniversitarios han guardado relación con disciplina…

Alla periferia del mondo, ai margini dell’umano. Felicità e dolore in Diodoro

2020

In the proem of his Bibliotheke, Diodorus Siculus states that a historian should provide knowledge for all mankind. Hence, the value of a historian is not measured by his ability to gather in a single narrative stories of men from all times all over the world. What matters is the way in which the common human nature of all of the actors in history emerges. This contribution focuses on the first part of Book III, in particular on the Ichthyophagoi and Acridophagoi, where the historian’s gaze oscillates between idealisation and compassion towards such primitive peoples. The diodorean ethnographic report has the merit to provide a backdrop to some of the guidelines of the cultural debate in th…

If P ≠ NP then Some Strongly Noninvertible Functions Are Invertible

2001

Rabi, Rivest, and Sherman alter the standard notion of noninvertibility to a new notion they call strong noninvertibility, and show--via explicit cryptographic protocols for secret-key agreement ([RS93, RS97] attribute this to Rivest and Sherman) and digital signatures [RS93, RS97]--that strongly noninvertible functions would be very useful components in protocol design. Their definition of strong noninvertibility has a small twist ("respecting the argument given") that is needed to ensure cryptographic usefulness. In this paper, we show that this small twist has a large, unexpected consequence: Unless P = NP, some strongly noninvertible functions are invertible.

If P≠NP then some strongly noninvertible functions are invertible

2006

AbstractRabi, Rivest, and Sherman alter the standard notion of noninvertibility to a new notion they call strong noninvertibility, and show—via explicit cryptographic protocols for secret-key agreement (Rabi and Sherman attribute this protocol to Rivest and Sherman) and digital signatures (Rabi and Sherman)—that strongly noninvertible functions are very useful components in protocol design. Their definition of strong noninvertibility has a small twist (“respecting the argument given”) that is needed to ensure cryptographic usefulness. In this paper, we show that this small twist has a consequence: unless P=NP, some strongly noninvertible functions are invertible.

Effects of Canopy Gap Disturbance on Forest Birds in Boreal Forests

2013

We studied the effects of small-scale disturbance on breeding, forest passerine birds in an old-growth and managed boreal forests in northern Finland. Small-scale disturbance (< 2 ha) in an old-growth and managed forests originated from wind falls and small clear cuts. Continuous forest without gaps was used as a control for both management types (old-growth and managed forests). Passerines' response to disturbance was examined by estimating species richness and abundance of different ecological groups. Species richness and the total abundance of birds did not differ between gap and non-gap plots, neither did the abundance of most ecological groups. Management type or study year were the mo…

Cultural and socio-economic impacts of Mediterranean marine protected areas

2000

Marine protected areas (MPAs) may be important for protecting the marine environment, but they may also have substantial socio-cultural impacts about which very little is currently known, or acknowledged. In the Mediterranean, few data are available on the socio-economic consequences of MPAs. The present study reviews the existing data on MPAs in Spain, France, Italy and Greece. A general increase in tourist activities in Mediterranean MPAs is evident, as are increases in the abundances of larger fish species, although there are no data indicating yields for fisheries increase adjacent to MPAs. A large increase in the number of divers and vessels using MPAs has already had impacts on natura…

Building Semantic Trees from XML Documents

2016

International audience; The distributed nature of the Web, as a decentralized system exchanging information between heterogeneous sources, has underlined the need to manage interoperability, i.e., the ability to automatically interpret information in Web documents exchanged between different sources, necessary for efficient information management and search applications. In this context, XML was introduced as a data representation standard that simplifies the tasks of interoperation and integration among heterogeneous data sources, allowing to represent data in (semi-) structured documents consisting of hierarchically nested elements and atomic attributes. However, while XML was shown most …

Building Ontologies from XML Data Sources

2009

In this paper, we present a tool called X2OWL that aims at building an OWL ontology from an XML datasource. This method is based on XML schema to automatically generate the ontology structure, as well as, a set of mapping bridges. The presented method also includes a refinement step that allows to clean the mapping bridges and possibly to restructure the generated ontology.