8,307 research outputs found
Does Stock Market Liberalisation Benefit The Economy? Evidence From Industry-Level Data
The paper examines the impact of stock market liberalisation on four industry-level economic variables, i) growth in real value added, ii) growth in real wages per worker, iii) growth in the number of employees and iv) growth in the number of firms using data on 18 developing countries for the period between 1981 - 2000. Genetic programming methodology is used to determine the liberalisation dates. Results from difference-in-differences regression indicate that stock market liberalisation has minimal impact on the growth of real value added. On the other hand, growth rates of real wages per worker, number of employees and number of firms are significantly higher for most countries after stock market liberalisation.stock market liberalisation, genetic programming, difference- indifferences regression
Information logistics: A production-line approach to information services
Logistics can be defined as the process of strategically managing the acquisition, movement, and storage of materials, parts, and finished inventory (and the related information flow) through the organization and its marketing channels in a cost effective manner. It is concerned with delivering the right product to the right customer in the right place at the right time. The logistics function is composed of inventory management, facilities management, communications unitization, transportation, materials management, and production scheduling. The relationship between logistics and information systems is clear. Systems such as Electronic Data Interchange (EDI), Point of Sale (POS) systems, and Just in Time (JIT) inventory management systems are important elements in the management of product development and delivery. With improved access to market demand figures, logisticians can decrease inventory sizes and better service customer demand. However, without accurate, timely information, little, if any, of this would be feasible in today's global markets. Information systems specialists can learn from logisticians. In a manner similar to logistics management, information logistics is concerned with the delivery of the right data, to the ring customer, at the right time. As such, information systems are integral components of the information logistics system charged with providing customers with accurate, timely, cost-effective, and useful information. Information logistics is a management style and is composed of elements similar to those associated with the traditional logistics activity: inventory management (data resource management), facilities management (distributed, centralized and decentralized information systems), communications (participative design and joint application development methodologies), unitization (input/output system design, i.e., packaging or formatting of the information), transportations (voice, data, image, and video communication systems), materials management (data acquisition, e.g., EDI, POS, external data bases, data entry) and production scheduling (job, staff, and project scheduling)
Coherent quantum transport in disordered systems: A unified polaron treatment of hopping and band-like transport
Quantum transport in disordered systems is studied using a polaron-based
master equation. The polaron approach is capable of bridging the results from
the coherent band-like transport regime governed by the Redfield equation to
incoherent hopping transport in the classical regime. A non-monotonic
dependence of the diffusion coefficient is observed both as a function of
temperature and system-phonon coupling strength. In the band-like transport
regime, the diffusion coefficient is shown to be linearly proportional to the
system-phonon coupling strength, and vanishes at zero coupling due to Anderson
localization. In the opposite classical hopping regime, we correctly recover
that the dynamics are described by the Fermi's Golden Rule (FGR) and establish
that the scaling of the diffusion coefficient depends on the phonon bath
relaxation time. In both the hopping and band-like transport regimes, it is
demonstrated that at low temperature the zero-point fluctuations of the bath
lead to non-zero transport rates, and hence a finite diffusion constant.
Application to rubrene and other organic semiconductor materials shows a good
agreement with experimental mobility data.Comment: 19 pages, 4 figure
Non-Canonical Statistics of a Spin-Boson Model: Theory and Exact Monte-Carlo Simulations
Equilibrium canonical distribution in statistical mechanics assumes weak
system-bath coupling (SBC). In real physical situations this assumption can be
invalid and equilibrium quantum statistics of the system may be non-canonical.
By exploiting both polaron transformation and perturbation theory in a
spin-boson model, an analytical treatment is advocated to study non-canonical
statistics of a two-level system at arbitrary temperature and for arbitrary SBC
strength, yielding theoretical results in agreement with exact Monte-Carlo
simulations. In particular, the eigen-representation of system's reduced
density matrix is used to quantify non-canonical statistics as well as the
quantumness of the open system. For example, it is found that irrespective of
SBC strength, non-canonical statistics enhances as temperature decreases but
vanishes at high temperature.Comment: 8 pages, 6 figures, to appear in Phys. Rev.
Beyond the Crisis: Financial Regulatory Reform in Emerging Asia
The main objective of this paper is to suggest reform measures to address the gaps and weaknesses in emerging Asia's financial regulatory and supervisory systems, on the basis of lessons drawn from the global crisis. For emerging Asia, the direct impact of the global financial crisis has been limited, thus generating substantially less pressure for financial restructuring and regulatory reform than is the case in developed economies. However, the underlying causes of the current turmoil—such as the dynamics of financial innovation and globalization—remain relevant for the region. As the world embraces wide-ranging financial reforms, emerging Asia will face dramatic changes in the global financial landscape. The region's authorities need to be prepared for the changing regulatory environment and proactive in strengthening their national regulatory and supervisory frameworks, in line with higher regulatory standards emanating from global reforms. Financial regulators will also need to design an effective and coherent framework for cross-border crisis management, and work towards a potential international regulatory and surveillance system.Financial regulation; regulatory reform; asia; global financial crisis
Feature extraction of speech signal and heartbeat detection in angry emotion identification
Angry is one of emotions that play an essential role in decision making, perception, learning and more. This paper detects the angry emotion by analyzing and recognizing angry speech signal as well as detecting the heartbeat condition. The speech database was uttered by various speakers in different gender and emotions. For the analyzing experiment, several digital signal processing methods such as autocorrelation and linear predication technique was introduced to analyze the features. Then, Artificial Neural Network (ANN) was used to classify each parameter features such as mean fundamental frequency, maximum fundamental frequency, standard deviation fundamental frequency, mean amplitude, pause length ratio and first formant frequency to recognize the emotion. Meanwhile, a heartbeat monitoring circuit was developed to measure the heartbeat. The accuracy of the result has achieved over than 80 percent during emotional recognition test. This method can be used further to recognize angry emotion of patient during counseling session
- …