Search results for "Comparative"

Defining the genomic signature of totipotency and pluripotency during early human development.

2013

The genetic mechanisms governing human pre-implantation embryo development and the in vitro counterparts, human embryonic stem cells (hESCs), still remain incomplete. Previous global genome studies demonstrated that totipotent blastomeres from day-3 human embryos and pluripotent inner cell masses (ICMs) from blastocysts, display unique and differing transcriptomes. Nevertheless, comparative gene expression analysis has revealed that no significant differences exist between hESCs derived from blastomeres versus those obtained from ICMs, suggesting that pluripotent hESCs involve a new developmental progression. To understand early human stages evolution, we developed an undifferentiation netw…

A comparative evaluation of crashworthy composite sandwich structures

2007

Abstract This paper describes an experimental evaluation of the energy absorption properties of a series of novel designs for cost-effective crashworthy composite sandwich structures. All the designs are based on the concept of the “tied-core” sandwich, i.e. the use of additional core reinforcements that act to tie the opposing facings of a sandwich together, thus preventing catastrophic failure under edgewise loading. The design, manufacture and crush testing of hollow rectangular tubes fabricated from six different tied-core concepts is described. Factors that are shown to promote high energy absorption include large, continuous areas of contact between the facings and the ties, non-thin …

Energy certification of buildings: A comparative analysis of progress towards implementation in European countries

2010

Abstract The Energy Performance Building Directive (Directive 2002/91/EC) introduced the compulsory energy certification of buildings in the EU from 2006 and it has played a key role in the common policy to monitor and reduce energy consumption. In order to assess the experience gained in this field in Europe overall, and in particular against the highly diverse settings of the different European nations, this paper examines the extent to which the Directive has been implemented by the 27 EU Member States. This is done via a comparative analysis assisted by two different indicators: of uniformity and of excellence. The measure of uniformity makes it possible to assess the degree of harmony …

Energy and CO2 life cycle inventory issues for aluminum based components: The case study of a high speed train window panel

2016

Abstract As materials production and transport are two relevant sectors in terms of global environmental impact, over the last years environmental impact analyses (mainly life cycle based analyses) of material replacing strategies in means of transportation were developed. Life cycle approach allows to consider the light-weighing benefit without neglecting the environmental impact of material production. In the present research energy and CO2 emissions life cycle analysis of a real case study is presented. Industrial data, experimental measurements and literature analysis were used to develop the life cycle analysis of an aluminum window panel to be assembled on an Italian high speed train.…

Comparative Analysis of Four New Alternative Types of Roundabouts: “Turbo”, “Flower”, “Target” and “Four-Flyover” Roundabou

2016

Analysis of literature shows that “modern roundabouts” nowadays exist in all European countries, as well as in more than 60 countries elsewhere in the world. Nowadays, a growing number of studies, presented in scientific and professional literature, point out a poor traffic safety characteristics of “standard” two-lane roundabouts and lower capacity then was expected. These problems are resolved in more ways in different countries; however the solution, whereby the number of conflict spots is diminished has proven to be the most successful. Lower number of conflict spots is one of characteristics of the alternative types of roundabouts. The alternative types of roundabouts are usually more …

La ragionevole durata del processo tra aspirazione alla celerità ed esigenza di ponderazione. Un confronto tra le esperienze europee di Civil Law e C…

2021

Exploring Environmental and Entrepreneurial Antecedents of Social Performance in Spanish Sports Clubs: A Symmetric and Asymmetric Approach

2020

The social function of non-profit sports clubs is undeniable, so analyzing the factors that influence their performance is vital. The aim of this study is to understand the influence of entrepreneurial factors (entrepreneurial orientation) and environmental factors (dynamism, hostility and complexity) on social performance using a symmetrical (Hierarchical regression model) and asymmetrical (qualitative comparative analysis) approach. The social performance of this particular type of organization is of great importance in an environment where sustainability from a social point of view is increasingly on the agenda of governments, organizations and society in general. A total of 209 Spanish …

Does institutional quality affect the level of entrepreneurial success differently across the entrepreneurship distribution?

2020

The phenomenon of entrepreneurship has driven much of the attention of academics, practitioners and policy makers. A correct and deep understanding of all the different conditions affecting entrepreneurship rates will advance in the establishment of useful measures that increase entrepreneurial success. The vast majority of the literature on the effect of institutional quality on entrepreneurship has been investigated based on average effects. However, how the impact of institutional quality on the level of entrepreneurship varies with the conditional distribution of entrepreneurship is still poorly understood. The present study attempts to fill the research gaps in this field. In order to …

When intentions turn into action: pathways to successful firm performance

2021

Entrepreneurship brings wealth to nations and contributes to their economic growth. People can take many paths to become entrepreneurs. Some join the family business, whilst others are born entrepreneurs, letting their innate intuition lead them into firm creation. For many, though, being able to learn and acquire the right skills is critical for a successful career as an entrepreneur. Like other human capital factors, entrepreneurial skills can be acquired. In today’s fast-changing society, it is of utmost importance for entrepreneurs not only to gain these skills but also to be surrounded by a supportive environment that will (1) guide them in the creation of their business idea and (2) h…

Young Innovative Companies and Access to Subsidies

2016

Young innovative companies (YICs) are becoming increasingly prominent in the debate on industrial policy because of their role as drivers of industry and the economy. The aim of this research was to determine which variables associated with the entrepreneur and the creation of YICs enable access to public entrepreneurship policies. This analysis compared Mas-Tur and Simon-Moya’s (2015) results (obtained using regression analysis) with results yielded by Qualitative Comparative Analysis (QCA). Using the QCA methodology, we identified causal configurations that lead companies to receive subsidies, or conversely, that lead companies not to receive subsidies. We thus observed differences in fin…