scholarly journals Analysis of Feature Influence on Covid-19 Death Rate Per Country Using a Novel Orthogonalization Technique

2021 ◽  
Author(s):  
Gaston Gonnet ◽  
John Stewart ◽  
Joseph Lafleur ◽  
Stephen Keith ◽  
Mark McLellan ◽  
...  
Keyword(s):  
Death Rate ◽  
Economic Factors ◽  
New Approach ◽  
Preventative Measures ◽  
Feature Importance ◽  
Schmidt Orthogonalization ◽  
A New Technique ◽  
Proper Context ◽  
Over Time ◽  
Orthogonalization Procedure

We have developed a new technique of Feature Importance, a topic of machine learning, to analyze the possible causes of the Covid-19 pandemic based on country data. This new approach works well even when there are many more features than countries and is not affected by high correlation of features. It is inspired by the Gram-Schmidt orthogonalization procedure from linear algebra. We study the number of deaths, which is more reliable than the number of cases at the onset of the pandemic, during Apr/May 2020. This is while countries started taking measures, so more light will be shed on the root causes of the pandemic rather than on its handling. The analysis is done against a comprehensive list of roughly 3,200 features. We find that globalization is the main contributing cause, followed by calcium intake, economic factors, environmental factors, preventative measures, and others. This analysis was done for 20 different dates and shows that some factors, like calcium, phase in or out over time. We also compute row explainability, i.e. for every country, how much each feature explains the death rate. Finally we also study a series of conditions, e.g. comorbidities, immunization, etc. which have been proposed to explain the pandemic and place them in their proper context. While there are many caveats to this analysis, we believe it sheds light on the possible causes of the Covid-19 pandemic.

scholarly journals Landscape of visions: the Ekolsund manorial estate, Sweden

2019 ◽  
Vol 4 ◽  
pp. 53-72
Author(s):  
Åsa Ahrland
Keyword(s):  
Seventeenth Century ◽  
Large Scale ◽  
Holistic Approach ◽  
Economic Factors ◽  
New Approach ◽  
Constant Change ◽  
Formed Part ◽  
Large Scale Project ◽  
Over Time ◽  
Socio Economic Factors

Parks and gardens are characterized by constant change and the need to be continuously managed and recreated. Over time, layers of history are built up, reflecting artistic and human ideals, socio-economic factors, technology and practices from different periods. Designed landscapes are archives and often have significant levels of biodiversity. One example is the Ekolsund manorial estate in Sweden, laid out in the seventeenth century in a large-scale project. Buildings, gardens and parks formed part of an overall architectural composition, where representation and display were key elements. With its audacity and grandeur, Ekolsund represents a new approach to landscape design in Sweden. The later development includes an early attempt by King Gustavus III to create landscape gardens and, during the era of capitalist owners, the planting of arboreta. Despite favourable conditions for a restoration of the seventeenth-century designed landscape, this paper argues for a holistic approach, where visions and actions of different agents - that together have shaped Ekolsund - are the foundation. Where cultural and natural values complement each other, requiring collaboration between research disciplines and the cultural heritage and nature conservation sectors.

scholarly journals Can Economic Factors Improve Momentum Trading Strategies? The Case of Managed Futures during the COVID-19 Pandemic

Economies ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 86
Author(s):  
Renata Guobužaitė ◽  
Deimantė Teresienė
Keyword(s):  
Financial Markets ◽  
Risk Premium ◽  
Trading Strategies ◽  
Economic Factors ◽  
Momentum Strategies ◽  
New Approach ◽  
Managed Futures ◽  
Asset Classes ◽  
Momentum Trading ◽  
Insight Into

Systematic momentum trading is a prevalent risk premium strategy in different portfolios. This paper focuses on the performance of the managed futures strategy based on the momentum signal across different economic regimes, focusing on the COVID-19 pandemic period. COVID-19 had a solid but short-lived impact on financial markets, and therefore gives a unique insight into momentum strategies’ performance during such critical moments of market stress. We offer a new approach to implementing momentum strategies by adding macroeconomic variables to the model. We test a managed futures strategy’s performance with a well-diversified futures portfolio across different asset classes. The research concludes that constructing a portfolio based on academically/economically sound momentum signals with its allocation timing based on broader economic factors significantly improves managed futures strategies and adds significant diversification benefits to the investors’ portfolios.

scholarly journals Measuring Poverty in Britain as a Multi-dimensional Concept, 1991 to 2003

2008 ◽  
Vol 37 (4) ◽  
pp. 597-620 ◽  
Author(s):  
MARK TOMLINSON ◽  
ROBERT WALKER ◽  
GLENN WILLIAMS
Keyword(s):  
Structural Equation Modelling ◽  
Structural Equation ◽  
Panel Study ◽  
Financial Stress ◽  
Material Deprivation ◽  
New Approach ◽  
Equation Modelling ◽  
Dimensional Measure ◽  
Trends Over Time ◽  
Over Time

AbstractWhile poverty is widely accepted to be an inherently multi-dimensional concept, it has proved very difficult to develop measures that both capture this multi-dimensionality and facilitate comparison of trends over time. Structural equation modelling appears to offer a solution to this conundrum and is used to exploit the British Household Panel Study to create a multi-dimensional measure of poverty. The analysis reveals that the decline in poverty in Britain between 1991 and 2003 was driven by falls in material deprivation, but more especially by reduced financial stress, particularly during the early 1990s. The limitations and potential of the new approach are critically discussed.

Logica di un sistema di sostegno alle imprese. La politica industriale italiana dal secondo dopoguerra a "Industria 2015"

2009 ◽  
pp. 89-113
Author(s):  
Fabrizio Traů
Keyword(s):  
Industrial Policy ◽  
State Intervention ◽  
State Aid ◽  
Limiting State ◽  
New Approach ◽  
Industrial Activities ◽  
The Universe ◽  
Over Time

- The paper aims at discussing the logic lying behind sixty years of industrial policy in Italy. It is argued that during this time State intervention has been characterised by the issue of an increasing number of laws (mostly persisting over time) devoted to specific objectives, but at the same time paralleled by a tendency towards the reduction of their selectivity through the widening (i.e. the loosening) of the boundaries of the universe of firms they were thought for. Such a logic seems to have made way in recent years for a relatively new approach, as stated in the program "Industria 2015", which has put at the centre of the stage the need for limiting State aid to a selected group of (horizontally identified) industrial activities. The paper also discusses some apparent shortcomings of this approach, emphasising that a risk for a new weakening of its selective logic is still at work.

5 Years, 20 Issues, 141 Articles, and What?

1996 ◽  
Vol 6 (3) ◽  
pp. 327-358
Author(s):  
LaRue Tone Hosmer
Keyword(s):  
New Approach ◽  
Conceptual Definition ◽  
Major Trend ◽  
Over Time

AbstractThe first issue of BusinessEthics Quarterlyappeared five years ago. This article classifies the content of the 141 articles that have appeared since that time along 18 dimensions, and 118 categories within those dimensions, to determine trends within the discipline. The major trend appears to be a shift in focus towards the increased discussion of a new approach/paradigm for the field, and towards a normative/descriptive interface of the theory. The major problem seems to be a lack of explicit conceptual definition and beginning empirical effort to support that new focus, which may thus prove unsustainable over time.

scholarly journals Perceção dos professores do 1o CEB, relativamente ao decreto-lei 54/2018 sobre a educação inclusiva

2019 ◽  
Vol 20 ◽  
pp. 702-713
Author(s):  
Sónia Leite ◽  
Diana Brás
Keyword(s):  
Special Education ◽  
Regular Education ◽  
Educational Needs ◽  
Target Audience ◽  
International Classification ◽  
Economic Factors ◽  
Special Educational Needs ◽  
Over Time ◽  
The Way

Resumo As sociedades têm, ao longo dos tempos, desenvolvido práticas e conceitos diversos face ao que consideram como “o diferente”. A forma como as pessoas “diferentes” têm sido encaradas em diversos momentos históricos traduz, de alguma forma, fatores de ordem social, cultural, religiosa e económica, próprios das diversas épocas (Pereira, 1999). Na última década, foram introduzidas mudanças significativas no apoio a prestar aos alunos com Necessidades Educativas Especiais (NEE) pelas escolas do ensino regular. O Decreto-Lei no 3/2008, de 7 de Janeiro veio revogar o Decreto-Lei no 319/91, de 23 de Agosto, o qual determina os apoios especializados a prestar aos alunos com NEE. Este diploma gerou muita controvérsia por parte dos investigadores nacionais, por limitar o público-alvo de apoios especializados e defender um modelo de avaliação das NEE por referência à Classificação Internacional de funcionalidade, incapacidade e saúde (CIF). Uma década depois, o diploma que regulamenta a Educação Especial foi novamente revisto, tendo surgido o Decreto-Lei 54/2018. Através de um questionário com questões abertas e fechadas foi nosso intuito obter informação relativamente à perspetiva dos professores de ensino regular acerca da inclusão de alunos com NEE nas salas de ensino regular e às alterações previstas no novo Decreto-Lei que regulamenta a Educação Especial e os apoios a prestar a estes alunos.Palavras-chave: Educação Especial, Necessidades Educativas Especiais, Decreto-Lei Abstract Societies have, over time, developed diverse practices and concepts in relation to what they consider as "the different". The way in which "different" people have been viewed at various historical moments translates in some way into social, cultural, religious and economic factors characteristic of the various eras (Pereira, 1999). In the last decade, significant changes have been introduced in support for pupils with Special Educational Needs (SEN) in regular schools. Decree- Law no. 3/2008, of 7 January, revoked Decree-Law no. 319/91, of 23 August, which determines the specialized support to be provided to students with SEN. This diploma generated much controversy on the part of the national researchers, for limiting the target audience of specialized supports and to defend a model of evaluation of the SEN with reference to the International Classification of functionality, incapacity and health (CIF). A decade later, the diploma that regulates Special Education was again revised, and Decree-Law 54/2018 emerged. Through a questionnaire with open and closed questions, it was our intention to obtain information regarding the perspective of teachers of regular education about the inclusion of students with SEN in the regular teaching rooms and the changes provided for in the new Decree- Law that regulates Special Education and the support to these students.Keywords: Special Education, Special Educational Needs, Decree-Law

scholarly journals SUBJECTIVE ASSESSMENT OF FINANCIAL DISTRESS IN PURCHASING A SUFFICIENT AMOUNT OF FOOD. ECONOMETRIC ANALYSIS OF POLISH MICRODATA

2017 ◽  
Vol 16 (1) ◽  
pp. 5-12 ◽  
Author(s):  
Hanna Dudek
Keyword(s):  
Financial Distress ◽  
Subjective Assessment ◽  
Econometric Analysis ◽  
Binary Choice ◽  
Economic Factors ◽  
Factors Affecting ◽  
Financial Difficulties ◽  
Binary Choice Models ◽  
Over Time ◽  
Socio Economic Factors

The paper analyses subjective aspects of food poverty in Poland. It deals with households’ assessment of financial difficulties in purchasing a sufficient amount of food in the period 2009–2015. The study is based on Social Diagnosis data. Its purpose is to identify the socio-economic factors affecting financial distress among Polish households. The study also aims to test whether the probability of experiencing financial difficulties is persistent over time. In econometric analysis binary choice models for panel data are applied. The findings state that apart from equivalent incomes and owned savings, loans or debts, factors having a significant impact on the final results are places of residence and biological types of households.

scholarly journals A New Technique to Solve the Instant Insanity Problem

2016 ◽  
Vol 11 (10) ◽  
pp. 5766-5773
Author(s):  
Salar Y Alsardary ◽  
Hwee Jung Kim ◽  
Julie George
Keyword(s):  
Graph Theory ◽  
Programming Language ◽  
New Technique ◽  
New Approach ◽  
A New Technique

Instant Insanity [1] consists of four cubes, each of whose six faces are colored with one of the four colors: red, blue, white, and green. The object is to stack the cubes in such a way that each of the four colors appears on each side of the resulting column. See figure 1 below[2]. Traditionally, this could be solved using graph theory.However, in this article, we introduce a new technique to solve the problem without using graph theory. We also used a Perl programming language to implement the new approach for the Instant Insanity.

Race at Work

2019 ◽  
pp. 21-65
Author(s):  
Henrice Altink
Keyword(s):  
Public Sector ◽  
Labour Market ◽  
Census Data ◽  
Economic Factors ◽  
The Public ◽  
Political Partisanship ◽  
Changes Over Time ◽  
Over Time

Making extensive use of census data, this chapter sets out changes over time in the race and colour profile of the labour market. It shows that dark-skinned Jamaicans made considerable advances, especially in the public sector, but that even long after independence they were still largely absent from some fields and in others rarely found at senior levels. It will be argued that the stratification of the labour market by colour was largely the result of race-neutral practices, such as educational qualifications and other hiring and promotion criteria; disadvantage accumulated over time and across racial domains; and government inaction, which was partly triggered by political partisanship and economic factors.

Severing Corruption from Everyday Life

2014 ◽  
Vol 1 (3) ◽  
pp. 13-25
Author(s):  
Babatunde Joshua Omotosho
Keyword(s):  
Developing Countries ◽  
Everyday Life ◽  
Economic Factors ◽  
Success Story ◽  
Political Landscape ◽  
Over Time

One of the challenging scenarios regarding political landscape in developing countries has to do with corruption and Nigeria is not an exception. Politicians often tow the paths of corrupt practices (while preparing for election and upon assumption of political offices) due to a number of social and economic factors. Attempts have been made by different administrations in this country to severe these twin brothers (corruption and politics) in order to ensure a lasting democracy in Nigeria. In spite of these efforts, the success story is nothing to write home about. The questions therefore are: is there any tie between corruption and culture? At what point did corruption become an identifiable feature of Nigerian politics? What are the steps taken so far to address this menace and what are the achievements over time? All these issues and others become critical as this paper examines the place of culture in corruption in Nigeria.

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