4,488 research outputs found
North-South customs unions and international capital mobility
The primary distinction in a North-South trade accord is likely to be that the Southern nation experiences more capital scarcity than its Northern trade partner. So the trade accord's impact on the Southern trading partner's ability to attract capital may have welfare implications for both nations. The authors extend the traditional analysis of customs unions to allow for international capital movements. Their results indicate that trade accords may affect the ability of Southern nations to attract capital and may divert capital between Southern nations. Moreover, the welfare implications of North-South trade accords may differ from those that predict the North American Free Trade Agreement's (NAFTA) minor third-country effects, holding factor endowments constant. The key implications of North-South trade accords such as NAFTA are generally perceived to involve their impact on investment flows. The authors try to understand the channels through which trade accords can affect North-South investment flows. A potential link between trade accords and investment flows may be how the accords affect the ability of the Southern partner government to make commitments about the treatment of foreign investment. They show that these accords can affect both the magnitude and pattern of inward foreign investment and production, implying the possibility that both trade and financial diversioncan stem from a bilateral regional trade accord. Novel effects that emerge under sovereign risk must be addressed when assessing the welfare implications of trade accords. The greatest gains from integration are still achieved when integration takes place between the countries with the greatest potential gains from trade. But the authors make a distinction: these gains now include both current trade and inter-temporal trade through foreign investment.Environmental Economics&Policies,Economic Theory&Research,Payment Systems&Infrastructure,International Terrorism&Counterterrorism,Fiscal&Monetary Policy,Trade and Services,Economic Theory&Research,Environmental Economics&Policies,TF054105-DONOR FUNDED OPERATION ADMINISTRATION FEE INCOME AND EXPENSE ACCOUNT,Trade and Regional Integration
Detection of mecC-Methicillin-resistant Staphylococcus aureus isolates in river water : a potential role for water in the environmental dissemination
Methicillin-resistant Staphylococcus aureus (MRSA) is a public health concern due to limited treatment options. The recent description of a mecA homologue, mecC in human and cattle, led to studies to detect this new variant in human and other animal species. Detection of mecC in wild boar and fallow deer in a Spanish game estate led us to further investigate the presence of mecC-MRSA at this location. Samples from cattle, wild animals, workers and river water were tested. A further three mecC-MRSA isolates were obtained from river water. Molecular characterization (multilocus sequence typing and spa typing) and antimicrobial susceptibility testing (broth microdilution) showed that isolates were similar to those detected in wild animals. Whole genome sequencing confirmed that the isolates from the river water and wild animals in the same geographic area were all closely related isolates of ST425 mecC-MRSA. The presence of mecC-MRSA in the river water highlights the potential role of water in the dissemination of mecC-MRSA
Celebrities and Shoes on the Female Brain: The Neural Correlates of Product Evaluation in the Context of Fame
Celebrity endorsement is omnipresent. However, despite its prevalence, it is unclear why celebrities are more persuasive than (equally attractive) non-famous endorsers. The present study investigates which processes underlie the effect of fame on product memory and purchase intention by the use of functional magnetic resonance imaging methods. We find an increase in activity in the medial orbitofrontal cortex (mOFC) underlying the processing of celebrity-product pairings. This finding suggests that the effectiveness of celebrities stems from a transfer of positive affect from celebrity to product. Additional neuroimaging results indicate that this positive affect is elicited by the spontaneous retrieval of explicit memories associated with the celebrity endorser. Also, we demonstrate that neither the activation of implicit memories of earlier exposures nor an increase in attentional processing is essential for a celebrity advertisement to be effective. By explaining the neural mechanism of fame, our results illustrate how neuroscience may contribute to a better understanding of consumer behavior
Can segmentation models be trained with fully synthetically generated data?
In order to achieve good performance and generalisability, medical image
segmentation models should be trained on sizeable datasets with sufficient
variability. Due to ethics and governance restrictions, and the costs
associated with labelling data, scientific development is often stifled, with
models trained and tested on limited data. Data augmentation is often used to
artificially increase the variability in the data distribution and improve
model generalisability. Recent works have explored deep generative models for
image synthesis, as such an approach would enable the generation of an
effectively infinite amount of varied data, addressing the generalisability and
data access problems. However, many proposed solutions limit the user's control
over what is generated. In this work, we propose brainSPADE, a model which
combines a synthetic diffusion-based label generator with a semantic image
generator. Our model can produce fully synthetic brain labels on-demand, with
or without pathology of interest, and then generate a corresponding MRI image
of an arbitrary guided style. Experiments show that brainSPADE synthetic data
can be used to train segmentation models with performance comparable to that of
models trained on real data.Comment: 12 pages, 2 (+2 App.) figures, 3 tables. Accepted at Simulation and
Synthesis in Medical Imaging workshop (MICCAI 2022
Spanish validation of the Internet Gaming Disorder-20 (IGD-20) Test
In recent years, problematic and addictive gaming has been a phenomenon of growing concern worldwide. In light of the increasing awareness about this issue, the latest (fifth) edition of the American Psychiatric Association’s Diagnostic and Statistical Manual of Mental Disorders (DSM-5) included Internet Gaming Disorder (IGD) as an area in need of more empirical research. The Internet Gaming Disorder Test (IGD-20 Test) was developed as a valid and reliable tool to assess IGD. The aim of the present study was to validate the Spanish version of the IGD-20 Test, and analyze the different profiles found among a sample of 1,074 Spanish-speaking gamers. A confirmatory factor analysis showed the validity of the Spanish version of the IGD-20 Test and its six factor structure (i.e., salience, mood modification, tolerance, withdrawal, conflict and relapse). The latent profile analysis (LPA) showed five different gamer classes. The 'disordered gamers’ class comprised 2.6% of the participants. Based on this class, sensitivity and specificity analyses showed an adequate empirical cut-off point of 75 (out of 100). It is concluded that the Spanish version of the IGD-20 Test is valid and reliable and can be used in research into IGD among Spanish speaking populations
The Transit Light Curve Project. XII. Six Transits of the Exoplanet XO-2b
We present photometry of six transits of the exoplanet XO-2b. By combining
the light-curve analysis with theoretical isochrones to determine the stellar
properties, we find the planetary radius to be 0.996 +0.031/-0.018 rjup and the
planetary mass to be 0.565 +/- 0.054 mjup. These results are consistent with
those reported previously, and are also consistent with theoretical models for
gas giant planets. The mid-transit times are accurate to within 1 min and are
consistent with a constant period. However, the period we derive differs by 2.5
sigma from the previously published period. More data are needed to tell
whether the period is actually variable (as it would be in the presence of an
additional body) or if the timing errors have been underestimated.Comment: Accepted for publication in AJ. 20 pages, 3 tables, 4 figure
Design and Instrumentation of a Measurement and Calibration System for an Acoustic Telemetry System
The Juvenile Salmon Acoustic Telemetry System (JSATS) is an active sensing technology developed by the U.S. Army Corps of Engineers, Portland District, for detecting and tracking small fish. It is used primarily for evaluating behavior and survival of juvenile salmonids migrating through the Federal Columbia River Power System to the Pacific Ocean. It provides critical data for salmon protection and development of more “fish-friendly” hydroelectric facilities. The objective of this study was to design and build a Measurement and Calibration System (MCS) for evaluating the JSATS components, because the JSATS requires comprehensive acceptance and performance testing in a controlled environment before it is deployed in the field. The MCS consists of a reference transducer, a water test tank lined with anechoic material, a motion control unit, a reference receiver, a signal conditioner and amplifier unit, a data acquisition board, MATLAB control and analysis interface, and a computer. The fully integrated MCS has been evaluated successfully at various simulated distances and using different encoded signals at frequencies within the bandwidth of the JSATS transmitter. The MCS provides accurate acoustic mapping capability in a controlled environment and automates the process that allows real-time measurements and evaluation of the piezoelectric transducers, sensors, or the acoustic fields. The MCS has been in use since 2009 for acceptance and performance testing of, and further improvements to, the JSATS
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