Search results for "Environment"
showing 10 items of 28487 documents
Bezpośrednie wytwarzanie energii elektrycznej z oleju napędowego
2016
Ze względu na stale wzrastające zapotrzebowanie na energię elektryczną poszukiwane są coraz to nowsze rozwiązania, pozwalające na sprostanie temu wyzwaniu. W ostatnich latach oprócz tradycyjnych metod wytwarzania energii coraz dynamiczniej rozwija się energetyka niekonwencjonalna. Przykładem takiego rozwiązania jest stosowanie ogniw paliwowych, głównie ze względu na ich wysoką sprawność. Ogniwa te przetwarzają energię chemiczną bezpośrednio na energię elektryczną, z pominięciem procesu spalania paliwa. Najczęściej zasilane są wodorem, jednak problemy z jego przechowywaniem wymuszają poszukiwanie innych paliw. Ponadto ogniwa paliwowe mogą stanowić dodatkowe/zapasowe źródło energii elektryczn…
COVID-SCORE Spain: public perceptions of key government COVID-19 control measures
2021
Abstract Background Spain was initially one of the countries most affected by the coronavirus disease 2019 (COVID-19) pandemic. In June 2020, the COVID-SCORE-10 study reported that the Spanish public’s perception of their government’s response to the pandemic was low. This study examines these perceptions in greater detail. Methods We employed an ordered logistic regression analysis using COVID-SCORE-10 data to examine the Spanish public’s perception of 10 key aspects of their government’s COVID-19 control measures. These included support for daily needs, mental and general health services, communication, information and coordination, which were examined by gender, age, education level, hav…
A revision of the structure and stratigraphy of pre-Green Tuff ignimbrites at Pantelleria (Strait of Sicily)
2013
International audience; At Pantelleria, peralkaline silicic magmas were erupted across a range of eruptive typologies and magnitudes: pyroclastic flows, Plinian to strombolian pumice fallout and lava flows. In this paper we focus on the intermediate cycle of eruptive activity which is bracketed by ignimbrite units slightly older than the two caldera collapses which marked the volcanological activity of the island. This age interval (180-85 ka) was punctuated by six ignimbrite-forming eruptions (silicic and variably peralkaline) for a cumulative erupted magma volume of approximately 6 km3 dense rock equivalent. Based on new 40Ar/39Ar (Na,K)-feldspar ages and petrographic data, we propose an …
Modélisation des effets des systèmes de culture sur la dynamique de la plante parasite orobanche rameuse en interaction avec les adventices
2019
Reducing pesticide use is a major challenge in agriculture and involves developing more sustainable methods that rely on non-chemical cropping techniques and biological regulations according to agroecological principles. Branched broomrape (Phelipanche ramosa (L.) Pomel) is a root parasitic plant which infects crops and causes dramatic yield losses worldwide. Managing broomrape is complex because it requires combining several cropping techniques whithin a global weed management strategy because broomrape is also able to infect non-parasitic weeds. The aim of this thesis was to stynthetize knowledge on branched broomrape dynamics in agroecosystems and to aggregate it within a mechanistic mod…
When earwig mothers do not care to share: Parent–offspring competition and the evolution of family life
2017
Kin competition often reduces – and sometimes entirely negates – the benefits of cooperation among family members. Surprisingly, the impact of kin competition on the fitness effects of family life only received close scrutiny in studies on sibling rivalry, whereas the possibility of parent–offspring competition has attracted much less attention. As a consequence, it remains unclear whether and how parent–offspring competition could have affected the early evolution of parental care and family life. Here, we examined the occurrence and consequences of parent–offspring competition over food access in the European earwig Forficula auricularia, an insect with facultative family life reminiscent…
Parenting Dimensions and Adolescent Peer Aggression: A Gendered Analysis
2020
The present study had two main goals. The first was to analyze the differences between parenting dimensions&mdash
USING THE ENVIRONMENTAL MANAGEMENT SYSTEM (EMS) TO CONTROL THE IMPLEMENTATION AND EMERGENCE OF GREEN STRATEGIES.
2009
To respond to the ecological challenges of the new century and their Environmental and Social Responsability, more and more companies adopt the Environmental Management System (EMS). The objective of this thesis is to analyze how this management system is used in French companies for implement their ''intended" green strategies and to explore the new green strategies. To answer this problematic, we mobilized two theoretical frameworks during this research: the New Institutionalism in Organizational Analysis (DiMaggio and Powell, 1983, 1991 and Hasselbladh Kallinikos, 2000) and Levers of control model (Simons, 1995). Then, our research methodology is composed of three phases succeeding: an e…
Effects of Entrepreneurial Orientation and Passion for Work on Performance Variables in Sports Clubs
2021
Entrepreneurial orientation and passion for work have been widely studied due to their effects on the behaviour and attitude of management teams in the short- and long-term. However, despite the influences of these variables on the sustainability and survival of an entity, there is a gap when considering the effects of these two performance variables in sports organisations. Therefore, the main objectives of this study were to understand the influences of entrepreneurial orientation and passion for work on service quality and sporting performance. To this end, 199 Spanish non-profit sports clubs were analysed using instruments with good psychometric properties. Data analysis was carried out…
Intensified job demands in healthcare and their consequences for employee well-being and patient satisfaction: A multilevel approach
2021
Contains fulltext : 234355.pdf (Publisher’s version ) (Open Access) Aims: Intensified job demands (IJDs) and their effects on employee burnout, work engagement and patient satisfaction were investigated across different work units and occupational groups in a healthcare setting. Design: A multilevel study. Methods One thousand twenty-four healthcare employees responded to a survey in 2019 and rated their experiences of IJDs, burnout and work engagement. Nine hundred fifty-one patients rated their satisfaction with care received from healthcare staff. Results: Work units and occupational groups who shared more experiences of increased time pressure and multitasking reported higher exhaustion…
Cost optimal analysis of lighting retrofit scenarios in educational buildings in Italy
2017
Abstract The European Energy Performance of Buildings Directive (EPBD) recast proposes, a comparative methodology to calculate cost-optimal levels of minimum energy performance requirements for buildings. This paper presents a method able to select the best retrofit action for lighting system, selectively analysing the daylight conditions and applying the cost-optimal methodology for different scenarios proposed for two existing educational buildings located in Italy. With the aim to improve both energy efficient and visual comfort conditions, the retrofit scenarios include lighting solutions with different combinations. They consider the replacement of lamps with more efficient lighting so…