نتایج جستجو برای: today as freshwater resources become scarcer

تعداد نتایج: 5870903  

Journal: :Frontiers in sustainable food systems 2021

With water resources constantly becoming scarcer, and 70% of freshwater used for the agriculture sector, there is a growing need innovative methods to increase use efficiency (WUE) food production systems provide nutrient-dense an increasing population. Sensor technology has recently been introduced horticulture industry resource minimize environmental impacts excessive use. Identifying effects...

Journal: :E3S web of conferences 2023

As energy demand rises and fossil fuel reserves become scarcer, planning grows to be necessary every country including Honduras. The mapping of electricity consumption in Honduras through data visualization tools as Tableau, proposed this paper, is a significant step toward the goal creating instruments that increase planning. This instrument provides relevant information behaviour: it was disc...

2008
Richard Cooke Máximo Jiménez

Freshwater fish faunas on the Isthmus of Panama are less diverse than those of the great South American river basins. Few freshwater species attain a large size (>500 g). The largest species regularly caught today in the lower freshwater sections of many Panamanian rivers are of marine origin. Freshwater fish species diversity and biomass decline rapidly with altitude particularly on the Pacifi...

2009
Ravi Kanbur

A central question for policy makers concerned to help the poor through a macro crisis is how to target scarcer resources at a time of greater need. Technical arguments suggest that finer targeting, through tightening individual programs or reallocating resources towards more tightly targeted programs, uses resources more efficiently for poverty reduction. These arguments survive even when the ...

Journal: :مدیریت بازرگانی 0
فرشته امین استادیار مدیریت منابع انسانی، دانشکدة مدیریت دانشگاه تهران، ایران سیدرضا سیدجوادین استاد مدیریت منابع انسانی، دانشکده مدیریت دانشگاه تهران، ایران علی رمضانی استادیار گروه مدیریت صنعتی، دانشکده مدیریت و حسابداری، دانشگاه آزاد اسلامی واحد کرج، ایران

organizational challenge in the twenty-first century iscompetition due to the expensive resources that determine survival andgrowth of enterprises. the resources can be categorized as management,labor, land, capital resources and equipment. among these materials, humanresources and management have a special place. at present, competitiveadvantage in many countries is based on human resource cap...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی عمران 1391

today, scouring is one of the important topics in the river and coastal engineering so that the most destruction in the bridges is occurred due to this phenomenon. whereas the bridges are assumed as the most important connecting structures in the communications roads in the country and their importance is doubled while floodwater, thus exact design and maintenance thereof is very crucial. f...

2013
Carol Eunmi Lee Wynne E Moss Nora Olson Kevin Fongching Chau Yu-Mei Chang Kelsey E Johnson

Saline to freshwater invasions have become increasingly common in recent years. A key hypothesis is that rates of freshwater invasions have been amplified in recent years by increased food concentration, yet this hypothesis has remained unexplored. We examined whether elevated food concentration could enhance freshwater tolerance, and whether this effect evolves following saline to freshwater i...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم تربیتی و روانشناسی 1391

the purpose of this study was to examine the status of supervision on departments’ heads at ferdowsi university of mashhad (fum) and realize some applied themes to provide a fit model for supervising departments’ heads in fum. the method was case study under a research category aimed for applied one. using purposive sampling, interviews were conducted with top fum managers, head departments, an...

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