Results 51 to 60 of about 8,858,929 (153)

Population Briefs, Vol. 19, no. 1 [PDF]

, 2013
This special issue of Population Briefs focuses on 60 years of groundbreaking Population Council research. IN THIS ISSUE: Advancing long-acting reversible contraception | Shaping policy and practice: The Council\u27s peer-reviewed journals | Bringing to ...
Population Council
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Optimal population policy [PDF]

, 1972
For more about the East-West Center, see http://www.eastwestcenter.org/This paper investigates the notion of optimality in population policy through the use of simple analytical and numerical examples.
Arthur, W. Brian, McNicoll, Geoffrey, East-West Population Institute   +2 more
core   +1 more source

A natural hybrid between rudd Scardinius erythrophthalmus and bream Abramis brama from Lake Akersvann, SE Norway

Fauna Norvegica, 1985
An examination of 83 cyprinid specimens collected in Lake Akersvann, SE Norway in Sept. 1984 and in June and Sept. 1985 showed these to be natural hybrids between Scardinius erythrophthalmus and Abramis brama.
Per Pethon
doaj   +1 more source

Influence of repeated pyrethroid applications on the sensitivity of pyrethroid-resistant pollen beetles (Meligethes aeneus F.) and their offspring

Journal für Kulturpflanzen, 2014
In the past, control of pollen beetles was mainly based on the application of synthetic pyrethroids. The frequent and indiscriminate use of this insecticide class resulted in a high selection pressure, ensuing in the formation of resistance, which has ...
Meike Brandes, Udo Heimbach, Andreas Müller, Bernd Ulber   +3 more
doaj  

Introduction of Atlantic salmon Salmo salar L. to the river Akerselv, Oslo

Fauna Norvegica, 1986
In 1981 Carlintagged Atlantic salmon smolts from the river Imsa and river Sandvikselv stocks, and in 1984 smolts from the river Loneelv stock were released in the river Akerselv. The smolts left the river and the inner Oslofjord few weeks after release.
Lars P. Hansen
doaj   +1 more source

Life history variables of resident Brown trout Salmo trutta L. in a coastal stream in northern Norway

Fauna Norvegica, 1989
This study focused on the population structure and life history of resident Brown trout in the lower parts of a coastal stream in northern Norway. An uneven age distribution was strongly evidenced by the low number of young fish.
Trygve Hesthagen
doaj   +1 more source

On the momentum of population growth [PDF]

, 1970
For more about the East-West Center, see http://www.eastwestcenter.org/This paper develops a simple formula for making the calculation of momentum, and so shows the five parameters of the present condition that determine the ultimate population under the
Keyfitz, Nathan, East-West Population Institute   +1 more
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Population-based incremental learning with memory scheme for changing environments [PDF]

, 2005
Copyright @ 2005 ACMIn recent years there has been a growing interest in studying evolutionary algorithms for dynamic optimization problems due to its importance in real world applications.
Yang, S, Shengxiang Yang, Yang, Shengxiang   +2 more
core   +1 more source

Intensive whitefish exploitation: effects on population structure of whitefish Coregonus lavaretus L. and brown trout Salmo trutta L. in a mountain reservoir

Fauna Norvegica, 1989
During the years 1980 - 1986, an intensive whitefish, Coregonus lavaretus, exploitation programme was carried out in the mountain reservoir Goppollen, SE Norway, in an attempt to improve whitefish quality and to reduce interspecific competition between ...
Svein Jakob Saltveit, Åge Brabrand
doaj   +1 more source

Population Briefs, Vol. 9, no. 2 [PDF]

, 2003
IN THIS ISSUE: Education improves breastfeeding practices in Zambia | Focus on newborn survival needed in rural Pakistan | Hormone choice may reduce risks of menopause therapy | Innovative strategies reduce fertility in Ghana | The future of training ...
Population Council
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