نتایج جستجو برای: ecosystem

تعداد نتایج: 83322  

Journal: :CoRR 2014
N. M. Hung N. H. Nam

Learning Ecosystem is new model for learning, that addresses to holistic learning model with attention to practical implementation. This paper is conducting the further study on detailed structure of learning ecosystem in component and procedural view. As case study, it connects Learning Ecosystem to Competency Education as Competency Learning Ecosystem Model for reference for practical use.

2017
Klara J. Winkler Joshua H. Viers Kimberly A. Nicholas

Vineyards shape important economic, cultural, and ecological systems in many temperate biomes. Like other agricultural systems, they can be multifunctional landscapes that not only produce grapes, but also for example serve as wildlife habitat, sequester carbon, and are places of rich traditions. However, research and management practices often focus mostly on individual, specific ecosystem ser...

2010
Rong Zeng Yanwei Zhao Zhifeng Yang

The shrinking Baiyangdian Lake and drying up rivers are widely observed in recent years. Due to the significant advantages in integrated analyses of natural and economic systems, emergy analysis is introduced in this paper to assess the health status of Baiyangdian Watershed. First, we establish a emergy based conceptual framework for the assessment, delineate an emergy flow diagram of Baiyangd...

2011
Michael Weiss Solange Sari

Mashups allow users to develop applications from a variety of open APIs. The creation of mashups is supported by a complex ecosystem of interconnected data providers, mashup platforms, and users. A sign of a healthy ecosystem is that the number and diversity of APIs and mashups in the ecosystem increases continuously. In this paper, we describe a model of the evolution of the mashup ecosystem t...

Journal: :veterinary research forum 2013
emanuel senyael swai angolwise mwakibete kapaga francis sudi potari meshack loomu gladyness joshua

an outbreak of malignant catarrhal fever (mcf), a fatal viral disease in indigenous tanzanian shorthorn zebu in ngorongoro district of tanzania during the period of june 2004 has been described. the disease was diagnosed by clinical, post mortem findings and the virus was identified using molecular characterization study. the history and clinical features included pyrexia, cornel opacity, nasal...

Journal: :ecopersia 2014
mahdieh ebrahim iraj rahimi pordanjani pejman tahmasebi

the present study was conducted to assess the effect of dung beetles on sheep dung removal and seed dispersal in semi steppe rangelands of shahrekord province with poor condition located in iran. therefore, the large (1 cm2) and small size (1 mm2) meshes were used and filled by sheep dung in six treatments. to evaluate the role of the insects in seeds translocation, three sizes of plastic beads...

Journal: :international journal of environmental research 2012
m.a. meli d. desideri a. penna f. ricci n. penna

this study reports the concentrations of important tracers of the marine environment, 210po and210pb, in different matrices from field samples collected at central adriatic sea (italy), a non-contaminatedmarine ecosystem. 210po concentration appears to decrease with increasing distance from the coast and asignificant difference in 210po concentrations in seawater samples at two different depths...

Reduction of species diversity which is a significant threat to the earth has been found more important and has attracted attention among ecologists over recent years. This research was carried out to determine the relationships between plant species diversity indices and soil properties by multivariate regression methods in Jamilabad region, Baft, Kerman province, Iran in 2016. Different sites...

Journal: :iranian journal of natural resources research 2012
mostafa jafari

during recent years, a series of climate projections provided for surface temperature increase and precipitation changes over the next century in various time slices. national institutes are using downscaling projections for more precise results. in this research study, various climate change projections in global, continental, regional and local scales have been examined in special forest ecos...

Journal: :journal of chemical health risks 0
francisco prieto garcía academic area of chemical, 2institute of agricultural sciences autonomous university of hidalgo state, road pachuca, tulancingo km. 4.5 c.p. 42076. col. carboneras, mineral de la reforma hidalgo, pachuca, hidalgo, mexico otilio a. acevedo sandoval academic area of chemical, 2institute of agricultural sciences autonomous university of hidalgo state, road pachuca, tulancingo km. 4.5 c.p. 42076. col. carboneras, mineral de la reforma hidalgo, pachuca, hidalgo, mexico judith prieto méndes academic area of chemical, 2institute of agricultural sciences autonomous university of hidalgo state, road pachuca, tulancingo km. 4.5 c.p. 42076. col. carboneras, mineral de la reforma hidalgo, pachuca, hidalgo, mexico

geological factors, such as damages, can cause health determinants in people, which were a little-studied and if they have been raised on occasion, usually referred to no communicable diseases. the aim of this work, which is a more or less updated bibliography, has been to develop a holistic idea for a better understanding of a problem and force latent or potential risk that they can carry and ...

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