Search results for "tail"

Assessing fat-tailed sequential forecast distributions for the Dow-Jones index with logarithmic scoring rules

2007

We use the logarithmic scoring rule for distributions to assess a variety of fat-tailed sequential forecasting distributions for the Dow-Jones industrial stock index from 1980 to the present. The methodology applies Bruno de Finetti''s contributions to understanding how to compare the quality of different coherent forecasting distributions for the same sequence of observations, using proper scoring rules. Four different forms of forecasting distributions are compared: a mixture Normal, a mixture of convex combinations of three Normal distributions, a mixture exponential power distribution, and a mixture of a convex combination of three exponential power distributions. The mixture linear com…

The drivers of small independent retailers' competitive behaviour

2022

From cars to bikes – the feasibility and effect of using e-bikes, longtail bikes and traditional bikes for transportation among parents of children a…

2017

Abstract Background The present study aims to increase bicycling and level of physical activity (PA), and thereby promote health in parents of toddlers, by giving access to different bicycle types. There is a need for greater understanding of e-bikes and their role in the transportation network, and further effects on PA levels and health. Moreover, longtail bikes could meet certain practical needs not fulfilled by e-bikes or traditional bikes, hence increased knowledge regarding their feasibility should be obtained. No previous studies have investigated whether providing an e-bike or a longtail bike over an extended period in a sample of parents of toddlers influence objectively assessed a…

Management in the 24/7-society raises concerns of fairness and social responsibility

2018

Purpose Despite the pressure on work-family polices arising from the increase in nonstandard working times in various sectors, only a few studies have addressed management practices in 24/7 workplaces. This paper aims to investigate the challenges Finnish managers face in meeting the various tensions stemming from nonstandard working hours and services operating 24/7. Two typical 24/7 work contexts are focused: the hospitality and retail industries and flexibly scheduled early childhood education and care (ECEC) services. The emphasis is on management practices relating to the planning of work shifts and children’s care schedules. Design/methodology/approach Study 1 comprises focus group i…

Green LAI Mapping and Cloud Gap-Filling Using Gaussian Process Regression in Google Earth Engine

2021

For the last decade, Gaussian process regression (GPR) proved to be a competitive machine learning regression algorithm for Earth observation applications, with attractive unique properties such as band relevance ranking and uncertainty estimates. More recently, GPR also proved to be a proficient time series processor to fill up gaps in optical imagery, typically due to cloud cover. This makes GPR perfectly suited for large-scale spatiotemporal processing of satellite imageries into cloud-free products of biophysical variables. With the advent of the Google Earth Engine (GEE) cloud platform, new opportunities emerged to process local-to-planetary scale satellite data using advanced machine …

Retail Evolution in Eastern European Countries: An Overview

2020

Retail has evolved a lot in the last years. Still, compared to more mature markets (such as US, UK, Germany, France, Sweden, the Netherlands), retail in Eastern European countries is less developed, with more balanced supply and demand. According to GfK’s report on European Retail in 2018, in 2017 there was a slight increase (+1.9 percent) in the purchasing power within the European Union (EU28) countries, Romania having the biggest increase (+7.8 percent) [1]. However, Romania’s low per capita purchasing power shows a gap in wealth levels across Europe. Huge differences between Western and Eastern Europe are visible also in terms of per capita values for retail space. Thus, the purpose of …

Use of retail market data to assess prices and flows of non-wood forest products in Latvia

2020

In northern Europe, largest part of non-wood forest products (NWFPs) are gathered for recreational purposes and household consumption, but considerable amount of forest berries and mushrooms are sold as well. Retail market, largely invisible for the official statistics, reveals the lifestyle-related aspects of NWFP trade and may help to understand the flows of this ecosystem service when information on wholesale trade is inaccessible. The prices and flows of most common NWFPs – edible berries, mushrooms and tree sap – in the retail market in Latvia in 2017 and 2018 were analysed based on direct interviews with the sellers in marketplaces and telephone interviews with online retailers. T…

Composition des dépenses publiques et impacts sur la croissance économique : analyses théoriques et empiriques sur des panels de pays développés, éme…

2016

The economic role of the State has been the subject of much debate both from theoretical and the practical perspectives. The actors of these controversies include the objectors of the efficiency of the public intervention since Smith to the present days, Keynesians and economists of the synthesis. Topics ranging from principle of the invisible hand, tax, expectations, burden of the debt, crowding out effect, public sector production are treated through of such debates. The work explains the breakdown of public spending components and implications for countries at levels development (OECD, BRICS, and WAEMU). The study also indicated that the effects of the public spending and its components …

The social costs of bank market power: Evidence from Mexico

2008

This paper estimates the social costs of market power (Harberger's triangle) in the Mexican banking system over the period 1993–2005. It also tests the so-called “quiet life” hypothesis which postulates a negative effect of market power on bank management efficiency. The social cost attributable to market power in 2005 is 0.15% of GDP, while that deriving from the cost (profit) inefficiency of banking management is 0.021% (0.075%) of GDP. The results allow us to reject the quiet life hypothesis in the deposits market. However, market power in the setting of the interest rate on loans has a negative effect on cost efficiency. Journal of Comparative Economics 36 (3) (2008) 467–488.

Is Finland Different? Quality of Work Among Finnish and European Employees

2010

The issue of the quality of work-life has risen in popularity due to concerns about the economic and social sustainability of European societies. Throughout the continent, global competition, technological change and the intensification of work are common developments which are seen to affect the well-being of the workforce. Nevertheless, European countries differ substantially in terms of job quality. According to earlier research, employees in Sweden and Denmark (and to lesser extent in Finland) report a higher quality of work tasks than elsewhere in Europe. The aim of this paper was to investigate, in a cross-national context using multivariate techniques, whether job quality in Finland …