Persistence Characteristics of Latin American Financial Markets

The financial rates of return from Latin American stock and currency markets are found to be non-normal, non-stationary, non-ergodic and long-term dependent, i.e., they have long memory. The degree of long- term dependence is measured by monofractal (global) Hurst exponents from wavelet multiresolution analysis (MRA). Scalograms and scalegrams provide the respective visualizations of these wavelet coefficients and the power spectrum of the rates of return. The slope of the power spectrum identifies the Hurst exponent and thereby the degree of scaling dependence that cannot be determined by Box-Jenkins type time series analysis. Our dependency and time and frequency scaling results are consistent with similar empirical findings from American, European, and Asian financial markets, extending the domain of the empirical investigation of the dynamics and risk characteristics of financial markets and refuting the hypothesis of perfectly efficient markets.financial markets, long memory, Hurst exponent, scalegram, wavelets, multiresolution analysis, measurement accuracy

Human posture recognition : literature review

Human Posture giving machines the ability to detect, track and idenlify people and their actions from video. has become a central topic in computer vision research. Recognition of human posture is a very challenging problem. The importance of human posture recognition or c1assification is evident by the incrcasing requiremcnt of machines that are able to interact intelligently and effortlessly with a human inhabiled environment. Recognizing human posture in image and video is an important task in many multimedia applicalions. such as multimedia information retrieval, human computer interaction, and surveillance.Posture is a snapshot of human body configuration, Many research work focus on human action recognition which corresponds to the analysis of human motion. Thereby spatial and temporal characteristics of an object need to be considered. The estimation of the human body posture and the localization of the body parts is one way to analyze the spatial part

The hare and the hortoise [sic]: The potential versus the reality of eTP implementation

In a health system increasingly driven by cost constraints, there is a focus on improved electronic transfer of information to support healthcare delivery. One area of healthcare that has moved more quickly than others to achieve this is prescribing in the primary care environment. Whilst the move to electronic transfer of prescriptions has reduced transcription errors, the regulatory environment persists with handwritten signatures. This constraint, whilst addressed slowly with technology solutions, needs support from legislative change. The ultimate step is to have a secure mobile model, which would support the move to a fully-electronic, paperless transaction model

Future of Australia’s ETP: Script exchange, script vault or secure mobile alternative

Electronic transfer of prescriptions is an essential element of electronic medications management. Unfortunately, current manual and preliminary electronic transfer of prescription methods are not patient focussed, leading to a suboptimal solution for the patient. This is increasingly relevant in the push for more patient engagement in their own healthcare. The area is highly controlled by legislation and regulation. Through research and an analysis of the possible methods to improve and personalise electronic transfer of prescriptions, this paper provides an overview of these conclusions, and presents an alternative technical solution. The solution has been derived from a number of experiments in data transfer techniques using a mobile phone. The paper explains how this meets the current regulations and legislation, as well as providing a patient centred approach to the problem. Ultimately, healthcare outcomes will improve where patients are given the opportunity and the tools to better engage in their own healthcare management, and secure electronic transfer of prescriptions with patient access to their own medication lists may improve compliance and reduce healthcare costs

Creation of quantum error correcting codes in the ultrastrong coupling regime

We propose to construct large quantum graph codes by means of superconducting circuits working at the ultrastrong coupling regime. In this physical scenario, we are able to create a cluster state between any pair of qubits within a fraction of a nanosecond. To exemplify our proposal, creation of the five-qubit and Steane codes is numerically simulated. We also provide optimal operating conditions with which the graph codes can be realized with state-of-the-art superconducting technologies.Comment: Added a new appendix sectio

Long‑term risk of stroke following percutaneous coronary intervention : can we predict the future and can we change it?

Peer reviewedPublisher PD

Bariatric surgery and its impact on cardiovascular disease and mortality : A systematic review and meta-analysis

Copyright © 2014 Elsevier Ireland Ltd. All rights reserved.Peer reviewedPostprin

Microstructured porous ZnO thin film for increased light scattering and improved efficiency in inverted organic photovoltaics

Cataloged from PDF version of article.Microstructured porous zinc oxide (ZnO) thin film was developed and demonstrated as an electron selective layer for enhancing light scattering and efficiency in inverted organic photovoltaics. High degree of porosity was induced and controlled in the ZnO layer by incorporation of polyethylene glycol (PEG) organic template. Scanning electron microscopy, contact angle and absorption measurements prove that the ZnO: PEG ratio of 4:1 is optimal for the best performance of porous ZnO. Ensuring sufficient pore-filling, the use of porous ZnO leads to a marked improvement in device performance compared to non-porous ZnO, with 35% increase in current density and 30% increase in efficiency. Haze factor studies indicate that the performance improvement can be primarily attributed to the improved light scattering enabled by such a highly porous structure. (C) 2014 Optical Society of Americ

Two-Phase and Vapor-Phase Thermophysical Property (pvTz) Measurements of the Difluoromethane + trans-1,3,3,3-Tetrafluoroprop-1-ene Binary System

In this paper, 182 pvTz data (28 data in the two-phase region and 154 data in the superheated vapor region) of mixtures containing difluoromethane (R32) and trans-1,3,3,3-tetrafluoroprop-1-ene (R12..

Increased CO₂ loss from vegetated drained lake tundra ecosystems due to flooding

Tundra ecosystems are especially sensitive to climate change, which is particularly rapid in high northern latitudes resulting in significant alterations in temperature and soil moisture. Numerous studies have demonstrated that soil drying increases the respiration loss from wet Arctic tundra. And, warming and drying of tundra soils are assumed to increase CO2 emissions from the Arctic. However, in this water table manipulation experiment (i.e., flooding experiment), we show that flooding of wet tundra can also lead to increased CO2 loss. Standing water increased heat conduction into the soil, leading to higher soil temperature, deeper thaw and, surprisingly, to higher CO2 loss in the most anaerobic of the experimental areas. The study site is located in a drained lake basin, and the soils are characterized by wetter conditions than upland tundra. In experimentally flooded areas, high wind speeds (greater than ~4 m s−1) increased CO2 emission rates, sometimes overwhelming the photosynthetic uptake, even during daytime. This suggests that CO2 efflux from C rich soils and surface waters can be limited by surface exchange processes. The comparison of the CO2 and CH4 emission in an anaerobic soil incubation experiment showed that in this ecosystem, CO2 production is an order of magnitude higher than CH4 production. Future increases in surface water ponding, linked to surface subsidence and thermokarst erosion, and concomitant increases in soil warming, can increase net C efflux from these arctic ecosystems