Search results for "cycle"

Being successful in the world of narrow opportunities: transmission patterns of the trematode Ichthyocotylurus pileatus.

2009

SUMMARYParasites with complex life cycles face 2 major challenges for transmission in northern latitudes. They have to cope with the general unpredictability associated with the series of transmission events required for completion of the cycle, and transmission has to be completed within a narrow temporal window because of strong seasonality. Despite this, some parasites show high transmission success, suggesting the operation of effective transmission mechanisms. We explored the transmission of Ichthyocotylurus pileatus (Trematoda) from its snail (Valvata macrostoma) to fish (Perca fluviatilis) hosts by examining some key characteristics in the dynamics of the cercarial emergence from sna…

Measuring expectation for an affordance gap on a smartphone user interface and its usage among older adults

2020

The smartphone has become a ubiquitous mobile communication tool that plays a crucial role in the daily lives for Malaysian older adults. However, it is not easy for older adults to learn new interaction modes and adopt the smartphone user interface. In this paper, we aim to examine the affordances of a smartphone user interface and its usage by older adults through the lens of Norman’s execution/evaluation action cycle (EEAC) framework. A mobile-user interaction study was administered with four tasks. A paired sample t-test was conducted to analyze the affordance gap between different levels of expectation. The results revealed that three tasks (making phone calls, adding contacts, and usi…

The Up-Cycle Beyond the Crime: The Productive Re-Activation of Confiscated Criminal Assets

La ricerca “The Up-Cycle Beyond the Crime: the Productive Re-Activation of Confiscated Criminal Assets” affronta il tema del reinserimento dei beni confiscati alla organizzazioni criminali in nuovi cicli di vita produttivi. La tesi è sviluppata attraverso tre parti principali. La prima parte è dedicata all’inquadramento scientifico del tema e all’apparato teorico, proponendo un regesto critico delle teorie e dell’evoluzione del concetto di riciclo della città e del territorio, con particolare attenzione alla modalità dell’up-cycle, attingendo sia alla letteratura delle scienze sociali, geografiche ed economiche sia alle pratiche relative alla riattivazione dei metabolismi territoriali. La s…

Explaining Change Paths of Systems and Software Development Practices

2010

This chapter discusses how systems development practices are shaped. Based on interviews conducted in ten development organizations and previous literature, we identify eight types of change paths in systems development practices: emergence, adoption, idealization, formalization, abandonment, informalization, entropy, and disobedience. We argue that the eight change path types provide an integrated theoretical framework on the study of how systems development practices change in organizations, projects, and among individual developers in a given context. We discuss how this framework complements existing theories and concepts of the contemporary literature on systems development.

Barreras para escapar de la violencia de género: la mirada de las profesionales. Barriers to escape Violence: the professionals' perspective.

2015

This article addresses, from the perspective of social workers, the difficulties faced by battered women and socially excluded who are living in Valencia’s centers for women’s protection. The following information has been gathered with different research techniques, especially through the use of focus groups and interviews. The most important barriers to escape violence described by the interviewees can be classified as external and internal. The former include stunted social and family networks, the lack of economic resources, the existence of children and the absence of institutional resources. In other words, obstacles related to the social structure. The latter refer to the normalizati…

Educación y equidad en la primera infancia : el caso de las aulas de 2 años en los centros públicos de la Comunidad Valenciana

2022

En este trabajo analizamos la evolución de la provisión de educación y atención de la primera infancia (EAPI) en el primer ciclo de la Educación Infantil en el contexto de la Comunidad Valenciana, con particular atención al caso de la implantación de las aulas de 2 años en centros públicos. Durante las últimas dos legislaturas, la Comunidad Valenciana ha pasado de estar en la vanguardia del fomento y desarrollo del modelo de oferta privada a ser de las regiones pioneras en el desarrollo de las aulas de 2 años en la enseñanza pública. Enmarcamos estos cambios en el contexto español, y discutimos su alcance para la equidad del sistema educativo en esta etapa desde el enfoque de los derechos h…

BIOCHARS IN SOILS: TOWARDS THE REQUIRED LEVEL OF SCIENTIFIC UNDERSTANDING

2017

The special issue on Biochar as an Option for Sustainable Resource Management Key priorities in biochar research for future guidance of sustainable policy development have been identified by expert assessment within the COST Action TD1107. The current level of scientific understanding (LOSU) regarding the consequences of biochar application to soil were explored. Five broad thematic areas of biochar research were addressed: soil biodiversity and ecotoxicology, soil organic matter and greenhouse gas (GHG) emissions, soil physical properties, nutrient cycles and crop production, and soil remediation. The highest future research priorities regarding biochar’s effects in soils were: functional …

Impact of Innovative Agricultural Practices of Carbon Sequestration on Soil Microbial Community.

2011

This chapter deals with the impact on soil microbiology of innovative management techniques for enhancing carbon sequestration. With in the MESCOSAGR project, the effect of different field treatments was investigated at three experimental sites differing in pedo-climatic characteristics. Several microbiological parameters were evaluated to describe the composition of soil microbial communities involved in the carbon cycle, as well as to assess microbial biomass and activity. Results indicated that both compost and catalyst amendments to field soils under maize or wheat affected microbial dynamics and activities, though with out being harmful to microbial communities.

Environmental analysis of different construction techniques and maintenance activities for a typical local road

2017

Abstract In this paper, considering the sever impact of road infrastructures on both the surrounding environment as well as on the consumption of locally available natural resources, different road construction techniques have been studied and compared, in order to be able to rank the best solution in terms of environmental sustainability. For the aims of this study, a Life Cycle Analysis has been carried out on a road infrastructure with the most representative geometrical characteristics among those widely used in Italy, in suburban areas, with the help of an appropriate software, the PaLATE. The environmental effects due to both the use of recycled materials, such as the Reclaimed Asphal…

Solar Surface Magnetism and Irradiance on Time Scales from Days to the 11-Year Cycle

2009

The uninterrupted measurement of the total solar irradiance during the last three solar cycles and an increasing amount of solar spectral irradiance measurements as well as solar imaging observations (magnetograms and photometric data) have stimulated the development of models attributing irradiance variations to solar surface magnetism. Here we review the current status of solar irradiance measurements and modelling efforts based on solar photospheric magnetic fields. Thereby we restrict ourselves to the study of solar variations from days to the solar cycle. Phenomenological models of the solar atmosphere in combination with imaging observations of solar electromagnetic radiation and meas…