نتایج جستجو برای: geographical and topographical characteristics

تعداد نتایج: 16902296  

Journal: :J. Informetrics 2012
Bing He Ying Ding Erjia Yan

The author order of multi-authored papers can reveal subtle patterns of scientific collaboration and provide insights on the nature of credit assignment among coauthors. This article proposes a sequencebased perspective on scientific collaboration. Using frequently occurring sequences as the unit of analysis, this study explores (1) what types of sequence patterns are most common in the scienti...

2007
Francesca Michielin Clara H. Mulder

We investigate the determinants of geographical distances to parents. We focus on the role of family members who live outside the household (the parents themselves, and siblings), and on the distinction between the effects of life events and effects related to the timing with which these events have been experienced in the life course. We use data from the Netherlands Kinship Panel Study and li...

Journal: :آب و خاک 0
سیّدحمیدرضا صادقی ملیحه سادات ظریف معظم سید خلّاق میرنیا

abstract the proper management of a watershed depends on recognition of effective elements and investigation of their behavior in different conditions. till date, many researches have studied the role of topographical general characteristics on hydrologic behaviors. whereas, the changeability of hydrologic properties under different conditions, especially in iranian watershed has been rarely ta...

Journal: :Frontiers in Environmental Science 2021

Mountainous forests in Algeria are severely affected by climate change. The degradation is exacerbated overgrazing, deforestation, and poor land management linked to the harsh topographical conditions of mountain agrosystem. These have influenced turnover soil organic matter thus SOC stocks storage. This study aims investigate average carbon stored forest soils Tessala Mount examine influence d...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان 1390

cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...

Journal: :Environmental Research Letters 2022

Abstract Developing spatially-targeted policies for farmland in the European Union (EU) requires synthesized, spatially-explicit knowledge of agricultural systems and their environmental conditions. Such synthesis needs to be flexible scalable a way that allows generalization landscapes potential into spatial units are informative at any given resolution extent. In recent years, typologies land...

Journal: :The Boston Medical and Surgical Journal 1884

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