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Stock market

Sindhuja Ranganathan, Mikko Kivelä, Juho Kanniainen
We identify temporal investor networks for Nokia stock by constructing networks from correlations between investor-specific net-volumes and analyze changes in the networks around dot-com bubble. The analysis is conducted separately for households, financial, and non-financial institutions. Our results indicate that spanning tree measures for households reflected the boom and crisis: the maximum spanning tree measures had a clear upward tendency in the bull markets when the bubble was building up, and, even more importantly, the minimum spanning tree measures pre-reacted the burst of the bubble...
2018: PloS One
Federica Farabegoli, Maurizio Pirini, Magda Rotolo, Marina Silvi, Silvia Testi, Sergio Ghidini, Emanuela Zanardi, Daniel Remondini, Alessio Bonaldo, Luca Parma, Anna Badiani
The authenticity of fish products has become an imperative issue for authorities involved in the protection of consumers against fraudulent practices and in the market stabilization. The present study aimed to provide a method for authentication of European sea bass (Dicentrarchus labrax) according to the requirements for seafood labels (Regulation 1379/2013/EU). Data on biometric traits, fatty acid profile, elemental composition, and isotopic abundance of wild and reared (intensively, semi-intensively and extensively) specimens from 18 Southern European sources (n = 160) were collected and clustered in 6 sets of parameters, then subjected to multivariate analysis...
June 8, 2018: Journal of Agricultural and Food Chemistry
Collin Wolf, Samuel Bott, Inmaculada Hernandez, Lorin Grieve
Objective. To describe and evaluate the impact of a competition on investment financial acumen, and its relationship with improved health care industry knowledge. Methods. Students' confidence on 19 specific areas was assessed by a survey before and after participation in the health care investment competition. Their performance was also compared to that of Standard & Poor's 500 Index for Healthcare. Results. Students' self-perception on their knowledge of all 19 domains significantly increased after they participated in the health care investment competition...
May 2018: American Journal of Pharmaceutical Education
F Cavalli, A K Naimzada, N Pecora, M Pireddu
In the present paper, a model of a market consisting of real and financial interacting sectors is studied. Agents populating the stock market are assumed to be not able to observe the true underlying fundamental, and their beliefs are biased by either optimism or pessimism. Depending on the relevance they give to beliefs, they select the best performing strategy in an evolutionary perspective. The real side of the economy is described within a multiplier-accelerator framework with a nonlinear, bounded investment function...
May 2018: Chaos
Kathryn Wallin-Miller, Grace Li, Diana Kelishani, Ruth I Wood
Anabolic-androgenic steroid (AAS) abuse is implicated in maladaptive decision making such as increased risk taking and problem gambling. Endogenous testosterone correlates with economic risk taking in both the stock market (Coates & Herbert, 2008) and in the laboratory, as measured by the Iowa Gambling Task (Stanton, Liening, & Schultheiss, 2011). Additionally, AAS use has been associated with problem gambling behavior in adolescents (Proimos, DuRant, Pierce, & Goodman, 1998). Thus, AAS may impair economic decision making...
June 2018: Behavioral Neuroscience
Amelia R DeFosset, Allison Kwan, Daniel Rizik-Baer, Luis Gutierrez, Lauren N Gase, Tony Kuo
Increasing access to fresh produce in small retail venues could improve the diet of people in underserved communities. However, small retailers face barriers to stocking fresh produce. In 2014, an innovative distribution program, Community Markets Purchasing Real and Affordable Foods (COMPRA), was launched in Los Angeles with the aim of making it more convenient and profitable for small retailers to stock fresh produce. Our case study describes the key processes and lessons learned in the first 2 years of implementing COMPRA...
May 24, 2018: Preventing Chronic Disease
Nida Saddaf Khan, Sayeed Ghani, Sajjad Haider
IoT devices frequently generate large volumes of streaming data and in order to take advantage of this data, their temporal patterns must be learned and identified. Streaming data analysis has become popular after being successfully used in many applications including forecasting electricity load, stock market prices, weather conditions, etc. Artificial Neural Networks (ANNs) have been successfully utilized in understanding the embedded interesting patterns/behaviors in the data and forecasting the future values based on it...
May 25, 2018: Sensors
Gaetano Catanese, Hilmar Hinz, Maria Del Mar Gil, Miquel Palmer, Michael Breen, Antoni Mira, Elena Pastor, Amalia Grau, Andrea Campos-Candela, Elka Koleva, Antoni Maria Grau, Beatriz Morales-Nin
In the Balearic Islands, different trammel net designs have been adopted to promote fisheries sustainability and reduce discards. Here, we compare the catch performance of three trammel net designs targeting the spiny lobster Palinurus elephas in terms of biomass, species composition and revenue from commercial catches and discards. Designs differ in the netting fiber type (standard polyfilament, PMF, or a new polyethylene multi-monofilament, MMF) and the use of a guarding net or greca , a mesh piece intended to reduce discards...
2018: PeerJ
Tobias Braun, Jonas A Fiegen, Daniel C Wagner, Sebastian M Krause, Thomas Guhr
In an Ultrafast Extreme Event (or Mini Flash Crash), the price of a traded stock increases or decreases strongly within milliseconds. We present a detailed study of Ultrafast Extreme Events in stock market data. In contrast to popular belief, our analysis suggests that most of the Ultrafast Extreme Events are not necessarily due to feedbacks in High Frequency Trading: In at least 60 percent of the observed Ultrafast Extreme Events, the largest fraction of the price change is due to a single market order. In times of financial crisis, large market orders are more likely which leads to a significant increase of Ultrafast Extreme Events occurrences...
2018: PloS One
Peter Alders, Frederik T Schut
In several OECD countries the percentage of elderly in long-term care institutions has been declining as a result of ageing-in-place. However, due to the rapid ageing of population in the next decades future demand for institutional care is likely to increase. In this paper we perform a scenario analysis to examine the potential impact of these two opposite trends on the demand for institutional elderly care in the Netherlands. We find that the demand for institutional care first declines as a result of the expected increase in the number of low-need elderly that age-in-place...
May 21, 2018: Health Economics, Policy, and Law
Carmen G Sotelo, Amaya Velasco, Ricardo I Perez-Martin, Kristina Kappel, Ute Schröder, Véronique Verrez-Bagnis, Marc Jérôme, Rogério Mendes, Helena Silva, Stefano Mariani, Andrew Griffiths
Tuna fisheries and processing represent economic activities of paramount importance around the world. Most of these products are traded for human consumption and in general are highly demanded commodities. However, not all tuna products achieve the same market price, some consumers are willing to pay a huge amount of money for certain species (i.e. Japanese market for Bluefin tuna) while other species are rather affordable (i.e. Skipjack tuna), therefore mislabelling has been observed frequently. We collected and analysed 545 tuna samples in six European countries, including fresh, frozen and canned products, and we have investigated whether or not these products were correctly labelled under European and national legislations...
2018: PloS One
Jake Fountain, Robert Woodgate, Luzia Rast, Marta Hernández-Jover
Sheep production systems are a major industry in Australia, with a gross value of roughly $4.66 billion; 87.3% of which is attributable to export markets. Exotic diseases such as foot-and-mouth disease (FMD) are a potential threat to the viability of Australia's export market. Previous outbreaks of FMD in developed countries, and challenges in the management of onshore biosecurity, signify the importance of on-farm biosecurity in controlling disease transmission. This study aims to investigate the risk of disease introduction and spread among New South Wales (NSW) sheep properties using FMD as a case study and draw recommendation for the industry...
2018: Frontiers in Veterinary Science
Jack Charles Collins, Carl Richard Schneider, Rebekah Jane Moles
OBJECTIVE: To explore the supply of emergency contraception (EC) from Australian community pharmacies after the introduction of ulipristal acetate (UPA), and to explore pharmacists' knowledge, decision-making, attitudes, and beliefs surrounding supplying EC. STUDY DESIGN: A mixed-methods approach of mystery shopping with structured interview was employed. From August-November 2017, 20 pharmacy students mystery-shopped 10 community pharmacies in metropolitan Sydney, Australia, requesting "the morning after pill"...
May 9, 2018: Contraception
A B Cunningham, J A Brinckmann, S-J Pei, P Luo, U Schippmann, X Long, Y-F Bi
ETHNOPHARMACOLOGICAL RELEVANCE: Fritillaria cirrhosa D. Don bulbs contain alkaloids and are one of the most intensively exploited alpine Himalayan medicinal species. In terms of proprietary medicines, our study shows that 210 F. cirrhosa products are offered by 46 suppliers, most of which (44) are situated in China and two in Nepal. A widepread commercial use is as one of the main ingredients in cough syrups. A well known example is "Nin Jiom Pei Pa Koa Herbal Cough & Throat Syrup", which typically contains more F...
May 8, 2018: Journal of Ethnopharmacology
Pooja Sharma, James Humphreys, Nicholas M Holden
Abolition of the milk quota in the European Union and favourable market conditions have stimulated the expansion of the dairy sector in Ireland, causing more milk to be produced from poorly drained land. This work evaluated the environmental impacts of alternative agricultural uses for poorly drained farm land in Ireland using life cycle assessment (LCA). The avoided burden of the displaced product was used to calculate the net environmental consequences in the context of regional or global markets. The impact categories evaluated were climate change, eutrophication and acidification, all expressed per hectare of land for the alternative land uses, which were pasture-based milk, suckler beef and lowland sheep production and coniferous forestry...
May 7, 2018: Science of the Total Environment
Shannon Ellis
No abstract text is available yet for this article.
May 9, 2018: Nature Biotechnology
Shiping Gong, Melita Vamberger, Markus Auer, Peter Praschag, Uwe Fritz
Chinese softshell turtles (Pelodiscus spp.) are widely distributed, ranging from the Amur and Ussuri Rivers in the Russian Far East through the Korean Peninsula, Japan, and eastern, central, and southern China to southern Vietnam. In East and Southeast Asia, Chinese softshell turtles are traditionally exploited for food and have been farm-bred in China since the Spring and Autumn Period, more than 2400 years ago. Currently, the annual production of Pelodiscus amounts to 340,000 t in China alone. Using mitochondrial DNA (2428 bp) and five nuclear loci (3704 bp), we examined broad sampling of wild and farm-bred Pelodiscus to infer genetic and taxonomic differentiation...
May 4, 2018: Die Naturwissenschaften
A B Cunningham, J A Brinckmann, Y-F Bi, S-J Pei, U Schippmann, P Luo
ETHNOPHARMACOLOGICAL RELEVANCE: P. polyphylla Smith is used in traditional medicine in China, India and Nepal and is likely to be similarly used through most of its geographic range. China is at the centre of demand for P. polyphylla where it is used as an ingredient in several very successful Chinese medicinal herbal formulations. The Chinese e-commerce platform '', for example, lists 97P. polyphylla items offered by 46 Asian suppliers, of which 21 are situated in the Chinese mainland, 12 in Nepal, 7 in India, 2 in Pakistan, and 1 each in Bhutan, Hong Kong, Thailand, and Vietnam...
May 1, 2018: Journal of Ethnopharmacology
Chantal Posthouwer, Sarina Veldman, Siri Abihudi, Joseph N Otieno, Tinde R van Andel, Hugo J de Boer
ETHNOPHARMACOLOGICAL RELEVANCE: In Tanzania, traditional medicine plays a significant role in health care and local economies based on the harvesting, trade and sale of medicinal plant products. The majority of this plant material is said to originate from wild sources, and both traditional healers and vendors are concerned about the increasing scarcity of certain species. AIM OF THE STUDY: A market survey of non-powdered, non-woody medicinal plants was conducted at Kariakoo Market in Dar es Salaam, the major hub for medicinal plant trade in Tanzania, to assess sustainability of traded herbal medicine...
April 30, 2018: Journal of Ethnopharmacology
Yerali Gandica, Marco Valerio Geraci, Sophie Béreau, Jean-Yves Gnabo
Drawing on recent contributions inferring financial interconnectedness from market data, our paper provides new insights on the evolution of the US financial industry over a long period of time by using several tools coming from network science. Relying on a Time-Varying Parameter Vector AutoRegressive (TVP-VAR) approach on stock market returns to retrieve unobserved directed links among financial institutions, we reconstruct a fully dynamic network in the sense that connections are let to evolve through time...
2018: PloS One
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