102,046 research outputs found
Macro economy, stock market and oil prices: Do meaningful relationships exist among their cyclical fluctuations?
Get PDFThis paper examines the relationship among consumer price index, industrial production, stock market and oil prices in Greece. Initially we use a unified statistical framework (cointegration and VECM) to study the data in levels. We then employ a multivariate VAR model to examine the relationship between the cyclical components of our series. The period of the study is from 1996:1 – 2008:6. Findings suggest that oil prices and the stock market exercise a positive effect on the Greek CPI, in the long run. Cyclical components analysis suggests that oil prices exercise significant negative influence to the stock market. In addition, oil prices are negatively influencing CPI, at a significant level. However, we find no effect of oil prices on industrial production and CPI. Finally, no relationship can be documented between the industrial production and stock market for the Greek market. The findings of this study are of a particular interest and importance to policy makers, financial managers, financial analysts and investors dealing with the Greek economy and the Greek stock market
The Effect of Tourism Taxation on International Arrivals to A Small Tourism-Dependent Economy
Get PDFThis paper examines the effects of tax policies on international tourist arrivals to the Maldives using the fully modified ordinary least squares (FMOLS) panel data method. The Maldives is chosen as a case study because the nation is heavily dependent on tourism and earn up to 70% of total government revenue in tourism tax. As expected, the estimated tax elasticities show that tourism tax adversely influences inbound travel, but significant differences across source markets are observed. Specifically, a 10% increase in tourism tax reduces demand by 5.4%. The degree of responsiveness of tourism demand to changes in taxes is essential for tourism policy since a change in the cost of visiting a destination resulting from a change in tourism tax policies affects inbound tourism demand. Consequently, the effectiveness of current fiscal policies is a matter of concern for attracting international tourists to the Maldives
Dynamic Spillovers of Oil Price Shocks and Policy Uncertainty
No full textThis study examines the dynamic relationship between changes in oil prices and the economic policy uncertainty index for a sample of both net oil-exporting and net oil-importing countries over the period 1997:01-2013:06. To achieve that, we extend the Diebold and Yilmaz (2009, 2012)
dynamic spillover index using structural decomposition. The results reveal that economic policy uncertainty (oil price shocks) responds negatively to aggregate demand oil price shocks (economic policy uncertainty shocks). Furthermore, during the Great Recession of 2007-2009, total spillovers
increase considerably, reaching unprecedented heights. Moreover, in net terms, economic policy uncertainty becomes the dominant transmitter of shocks between 1997 and 2009, while in the post-2009 period there is a significant role for supply-side and oil specific demand shocks, as net transmitters of spillover effects. These results are important for policy makers, as well as, investors
interested in the oil market. (authors' abstract)Series: Department of Economics Working Paper Serie
Roles of PLCβ1 in female reproduction
No full textIn mammals, development of a new organism requires fertilisation of the female
egg by sperm. The resulting zygote develops into the blastocyst stage as it travels
towards the uterus. Within the uterus, the blastocyst invades the maternal tissues
and establishes access to the maternal blood supply. This process is called
implantation and is absolutely essential for the further development of the
conceptus and establishment of pregnancy. Successful implantation requires a
proper preparation of the uterus and the embryo as well as a molecular dialogue
between the embryo and the uterine tissues.
Female mice that have a disruption in the Plcβ1 gene are infertile. In the course of
this Thesis it became apparent that the main cause of their infertility is their
inability to implant their embryos. PLCβ1 protein is a mediator of G-protein
coupled receptor (GPCR) signalling and it is involved in the production of second
messengers essential for downstream transmission of signals. A host of
reproductive functions are under the control of GPCR signalling. In this PhD
Thesis the infertile phenotype of Plcβ1 knockout (KO) female mice was
investigated to identify the reproductive processes affected by the lack of a
functional PLCβ1 protein. A combination of histological, molecular biology and in
vivo techniques were utilised to show that at the time of implantation, embryos fail
to attach to the uterine epithelium of KO uteri. In addition, it was demonstrated
that estrogen signalling and components of the endocannabinoid metabolism, both
key processes for successful implantation are severely altered in KO uteri. These
observations show that KO uteri fail to prepare for implantation. In addition, the
KO reproductive tract exerts a detrimental effect on pre- and peri- implantation
embryo development.
Currently, failure of implantation is thought to be one of the major causes of
infertility in women and up to this date there are no successful treatments. The results of this project expand our current knowledge on the physiology of
implantation and provide cues for the development of diagnostic markers and
treatments for the women who are unable to conceive
Oil price shocks and stock market returns: New evidence from the United States and China
Get PDFThis study examines the time-varying correlations between oil prices shocks of different types (supply-side, aggregate demand and oil-market specific demand as per Kilian (2009) who highlighted that "Not all oil shocks are alike") and stock market returns, using a Scalar-BEKK model. For this study we consider the aggregate stock market indices from two countries, China and the US, reflecting the most important developing and developed financial markets in the world. In addition to the whole market, we also consider correlations from key selected industrial sectors, namely Metals & Mining, Oil & Gas, Retail, Technology and Banking. The sample period runs from 1995 until 2013. We highlight several key points: (i) correlations between oil price shocks and stock returns are clearly and systematically time-varying; (ii) oil shocks of different types show substantial variation in their impact upon stock market returns; (iii) these effects differ widely across industrial sectors; and finally (iv) China is seemingly more resilient to oil price shocks than the US
Bibliographie Hilarion G. Petzold 1958 – 2009 mit Anhang als Einführung
No full textDieses Archiv enthält die Gesamtbibliographie der Werke des Autors nebst einiger Texte „Über H. G. Petzold“ im Schlussteil der Bibliographie sowie einen Anhang mit einer Einführung in die Architektur des Werkes in seinem wissenslogischen Aufbau als Ausarbeitung seines „Tree of Science Modells“ (2007).This archive contains the complete bibliography of the author and some texts about H. G. Petzold, moreover an epilogue with an introduction to the architecture of the works in its epistemological structure and composition and as an elaborations of Petzold’s „Tree of Science Modell (2007).https://www.fpi-publikation.de/polyloge/01-2009-petzold-h-g-gesamtbibliographie-h-g-petzold-1958-2009-updating-november2009/peerReviewedpublishedVersio
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Recommended from our members
3346: Samuel G. Freedman, author, 2013
No full textPhotograph of author Samuel G. Freedman, at NT Daily Slash meeting in the Mayborn School of Journalism at UNT
- …
