Search results for "CoV"
showing 10 items of 9749 documents
Research literature clustering using diffusion maps
2013
We apply the knowledge discovery process to the mapping of current topics in a particular field of science. We are interested in how articles form clusters and what are the contents of the found clusters. A framework involving web scraping, keyword extraction, dimensionality reduction and clustering using the diffusion map algorithm is presented. We use publicly available information about articles in high-impact journals. The method should be of use to practitioners or scientists who want to overview recent research in a field of science. As a case study, we map the topics in data mining literature in the year 2011. peerReviewed
The Role of the Anchor Atom in the Ligand of the Monolayer-Protected Au25(XR)18– Nanocluster
2015
We present a density functional theory (DFT) investigation on the role of the anchor atom and ligand on the structural, electronic, and optical properties of the anionic Au25(XR)18– nanocluster (X = S, Se, Te; R = H, CH3, and (CH2)2Ph). Substituting the anchor atom with other group 16 elements induces subtle changes in the Au–Au and Au–X bond lengths and polarization of the covalent bond. The changes in the electronic structure based on substituting both the anchor and R groups are presented through careful analysis of the density of states and theoretical determined optical spectra. We give a detailed side-by-side comparison into the structural, electronic, and optical properties of Au25(X…
Bilevel heat exchanger network synthesis with an interactive multi-objective optimization method
2012
Abstract Heat exchanger network synthesis (HENS) has been an active research area for more than 40 years because well-designed heat exchanger networks enable heat recovery in process industries in an energy- and cost-efficient manner. Due to ever increasing global competition and need to decrease the harmful effects done on the environment, there still is a continuous need to improve the heat exchanger networks and their synthesizing methods. In this work we present a HENS method that combines an interactive multi-objective optimization method with a simultaneous bilevel HENS method, where the bilevel part of the method is based on grouping of process streams and building aggregate streams …
Opportunity Discovery and Creation in Cloud Computing
2013
Cloud computing provides opportunities for firms selling or using cloud services. However, little is known about how entrepreneurs discover or create these opportunities for cloud computing. In this study, we found that the opportunities discovered in cloud computing were related to the development of software for a particular need. By contrast, created opportunities were developed under conditions of technological uncertainty, at a time when the market did not yet exist. It appears that created opportunities, if successful, bring long-term competitive advantages, whereas discovered opportunities are more easily copied and exploited by competitors. peerReviewed
DEVELOPMENT AND VALIDATION IN A GROUP OF INDUSTRY WORKERS, OF AN APPLICATION FOR AUDIOMETRIC SCREENING: A SOLUTION FOR SOCIAL DISTANCE DURING COVID-1…
2020
In the context of the global COVID-19 pandemic, companies and institutions all over the world are trying to find the best ways to reorganize their activity, minimizing the contagion risk among their employees, so as to protect their health and prevent internal SARS-COV-2 outbreaks. The recent development of new communication technologies, such as smartphones and tablets, has paved the way for the development and implementation of different applications. Starting with the above issues, in this study, we wanted to investigate the efficacy of iAudiometry application developed by our research team for the detection of deficits in the auditory system. Furthermore, we analyzed the precision in de…
PT Policy Brief : Koronakriisin ja sen hillitsemiseksi asetettujen rajoitusten talousvaikutuksista
2020
Tähän PT Policy Briefiin on koottu eri lähteistä tietoa ja omia laskelmia koronakriisin toistaiseksi aiheuttamista talousvaikutuksista. Tarkastelun keskiössä ovat rajoitustoimet koronaviruksen aiheuttaman taudin hillitsemiseksi, jotka samalla aiheuttavat suuria hyvinvointitappioita. Kyse näissä tappioissa ei ole pelkästään rahasta, vaan esimerkiksi aiemmat syvät taloustaantumat ovat aiheuttaneet niin ikään esimerkiksi kansalaisten selkeästi huonontuneen terveyden. Tilannekuva on, että koronakriisin aiheuttama taantuma esimerkiksi mitattuna lomautettujen lukumäärällä on ollut poikkeuksellisen nopea verrattuna vuoden 2009 finanssikriisiin. Esittelemme mallin, jonka avulla hahmotellaan, että l…
Muuttaako koronakriisi asennetta konkurssiin?
2020
Elvytysruiskeesta kipupakettiin?
2020
Assessing travel time-based accessibility to outdoor ice skating fields for children in Helsinki during the COVID-19 pandemic
2022
This paper was written within the research project called “Equality in suburban physical activity environments, YLLI” (in Finnish: Yhdenvertainen liikunnallinen lähiö, YLLI) funded by the Suburban Programme 2020–2022 (in Finnish: Lähiöohjelma 2020–2022, decision number VN/10837/2020). Informal sport is central to Finnish children’s leisure and physical activity time. This paper aims to build a better understanding of the travel time-based accessibility to informal sports facilities, specifically to ice skating fields, for children and adolescents (aged 7–19) in the city of Helsinki. We focused on the winter of 2020–2021 because COVID-19 restrictions on indoor activities resulted in ice skat…
Teachers' Survey on Emergency Remote Teaching Experience during Spring 2020 (COVID-19)
2021
Latvian Council of Science State Research Program “Covid-19 mitigation” project “Life with COVID-19: Evaluation of overcoming the coronavirus crisis in Latvia and recommendations for societal resilience in the future” No. VPP-COVID-2020/1-0013 Emergency Remote Teaching Questionnaire for Latvian Teachers of Comprehensive Schools during Spring 2020 (COVID-19 "First wave"). Participated 1543 teachers from all regions of Latvia.