Results 141 to 150 of about 126,178 (307)

Distance of movement in three threatened butterfly species

Ecological Entomology, EarlyView.
Multi‐year mark–recapture analysis using net displacement and Cormack–Jolly–Seber models shows similar daily detectability (0.17–0.22) among species, supporting robust interspecific comparisons. Dispersal kernels differ: lognormal best for Euphydryas aurinia and Parnassius apollo, exponential for Phengaris arion; P.
Markus Franzén, Anders Forsman, Oskar Kindvall, Victor Johansson   +3 more
wiley   +1 more source

The slow emergence of the rational investor: Grain markets and grain storage of rural estates in western Germany, eighteenth and early nineteenth centuries

The Economic History Review, EarlyView.
Abstract We develop new datasets of monthly grain prices in 14 urban markets and of the storage and marketing of grain by 5 rural estates located in western Germany between the late seventeenth century and c. 1860. We explore whether observed patterns of monthly prices, sales, and storage of grain are consistent with the rational competitive storage ...
Matthias Hartermann, Ulrich Pfister, Friederike Scholten‐Buschhoff   +2 more
wiley   +1 more source

Assessing the Progress of Stock Rebuilding in the Northeast Atlantic Against Levels That Can Produce Maximum Sustainable Yield

Fish and Fisheries, EarlyView.
ABSTRACT Rebuilding fish stocks to levels above which they produce Maximum Sustainable Yield (MSY) is a management aim for all European commercially exploited stocks. Progress is typically monitored against the fishing mortality that produces MSY in the long term (FMSY), however, the corresponding biomass target (BMSY) is rarely evaluated nor reported.
Henning Winker, Massimiliano Cardinale, Rishi Sharma, Laurence T. Kell, Iago Mosqueira, Christopher Griffiths   +5 more
wiley   +1 more source

Life Cycle Consumption and Portfolio Choice Under Real Interest Rate Risk

Financial Management, EarlyView.
ABSTRACT We set up a life cycle model with real interest rate risk to demonstrate that real interest rates have implications for optimal household consumption and investments. Lower interest rates lead to higher optimal stock investments and lower consumption.
Marcel Fischer, Natascha Jankowski
wiley   +1 more source

Ambiguity Aversion, Portfolio Choice, and Life Expectancy

International Economic Review, EarlyView.
ABSTRACT This paper studies how wealth and aging affect portfolio choices in a life‐cycle model with ambiguity aversion. Ambiguity aversion implies wealthier and older agents are endogenously more optimistic about risky asset returns, relative to poorer/younger agents. As life expectancy grows, old agents become even more optimistic, while young agents
Alistair Macaulay, Chenchuan Shi
wiley   +1 more source

Dynamics of High‐Growth Young Firms and the Role of Venture Capitalists

International Economic Review, EarlyView.
ABSTRACT Motivated by the substantial growth and upfront investments of venture capital (VC)‐backed firms observed in administrative US Census data, this study develops a life‐cycle firm dynamics model. In the model, startups choose the source of financing from VC, angel investors, or banks, depending on their growth potential, and invest in innovation.
Yoshiki Ando
wiley   +1 more source

On Metric Choice in Dimension Reduction for Fréchet Regression

International Statistical Review, EarlyView.
Summary Fréchet regression is becoming a mainstay in modern data analysis for analysing non‐traditional data types belonging to general metric spaces. This novel regression method is especially useful in the analysis of complex health data such as continuous monitoring and imaging data.
Abdul‐Nasah Soale, Congli Ma, Siyu Chen, Obed Koomson   +3 more
wiley   +1 more source

Somebody Knows Something: Managerial Ability, Product Development, and Return‐on‐Investment in a Hit‐Driven Industry

Journal of Economics &Management Strategy, EarlyView.
ABSTRACT In hit‐driven industries, product development is associated with a right‐skewed unconditional distribution of performance, and products in the right tail have outsized impacts. Understanding how exceptional performance is generated can improve resource allocation, but the literature advances two different narratives: one emphasizes postrelease
Darren Filson
wiley   +1 more source

The relative contribution of close-proximity contacts, shared classroom exposure and indoor air quality to respiratory virus transmission in schools. [PDF]

Nat Commun
Banholzer N, Munday JD, Jent P, Bittel P, Dall'Amico L, Furrer L, Bürki C, Stadler T, Egger M, Hascher T, Cattuto C, Fenner L.   +11 more
europepmc   +2 more sources

MENENTUKAN HARGA KONTRAK BERJANGKA NILAI TUKAR RUPIAH TERHADAP DOLLAR AS MENGGUNAKAN DISTRIBUSI LOGNORMAL

E-Jurnal Matematika, 2015
The purpose of this study is to determine the fair price of a futures contract for the IDR (Rupiah) against the USD using lognormal distribution simulation. This result is compared with interest rate parity theorem.
GEDE SUMENDRA, KOMANG DHARMAWAN, I NYOMAN WIDANA   +2 more
doaj