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1 – 10 of over 48000Barry E. Jones and David L. Edgerton
Revealed preference axioms provide a simple way of testing data from consumers or firms for consistency with optimizing behavior. The resulting non-parametric tests are very…
Abstract
Revealed preference axioms provide a simple way of testing data from consumers or firms for consistency with optimizing behavior. The resulting non-parametric tests are very attractive, since they do not require any ad hoc functional form assumptions. A weakness of such tests, however, is that they are non-stochastic. In this paper, we provide a detailed analysis of two non-parametric approaches that can be used to derive statistical tests for utility maximization, which account for random measurement errors in the observed data. These same approaches can also be used to derive tests for separability of the utility function.
Embedded technologies are one of the fastest growing sectors in information technology today and they are still open fields with many business opportunities. Hardly any new…
Abstract
Purpose
Embedded technologies are one of the fastest growing sectors in information technology today and they are still open fields with many business opportunities. Hardly any new product reaches the market without embedded systems components any more. However, the main technical challenges include the design and integration, as well as providing the necessary degree of security in an embedded system. This paper aims to focus on a new processor architecture introduced to face security issues.
Design/methodology/approach
In the short term, the main idea of this paper focuses on the implementation of a method for the improvement of code security through measurements in hardware that can be transparent to software developers. It was decided to develop a processor core extension that provides an improved capability against software vulnerabilities and improves the security of target systems passively. The architecture directly executes bound checking in hardware without performance loss, whereas checking in software would make any application intolerably slow.
Findings
Simulation results demonstrated that the proposed design offers a higher performance and security, when compared with other solutions. For the implementation of the Secure CPU, the SPARC V8‐based LEON 2 processor from Gaisler Research was used. The processor core was adapted and finally synthesised for a GR‐XC3S‐1500 board and extended.
Originality/value
As numerically, most systems run on dedicated hardware and not on high‐performance general purpose processors. There certainly exists a market even for new hardware to be used in real applications. Thus, the experience from the related project work can lead to valuable and marketable results for businesses and academics.
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Shelly Singhal, Sangita Choudhary and Pratap Chandra Biswal
The purpose of this paper is to examine the long-run association and short-run causality among oil price, exchange rate and stock market in Norwegian context.
Abstract
Purpose
The purpose of this paper is to examine the long-run association and short-run causality among oil price, exchange rate and stock market in Norwegian context.
Design/methodology/approach
This work uses auto regressive distributed lag (ARDL) bound co-integration test to examine the long-run association among international crude oil, exchange rate and Norwegian stock market. Further to test the causality, Toda–Yamamoto Granger causality test is used. Daily data ranging from 1 January, 2011 to 31 December, 2018 is used in this study.
Findings
Findings of this study suggest the existence of long-run equilibrium relationship among oil price, exchange rate and Norwegian stock market when oil price is taken as dependent variable. Further, this study observes the bi-directional causality between Norwegian stock market and exchange rate and unidirectional causality between oil and Norwegian stock market (from oil to stock market).
Originality/value
To the best of the authors’ knowledge, this the first study in context of Norway to explore the long-run association and causal relationships among international crude oil price, exchange rate and stock market index. Particularly, association of exchange rate and stock market largely remains unexplored for Norwegian economy. Further, majority of studies conducted in Norwegian setup have considered the period up to year 2010 and association of these variables is found to be time varying. Finally, this study uses ARDL bound co-integration test and Toda–Yamamoto Granger causality test. These methodologies have been used in literature in context of other countries like India and Mexico but not yet applied to study the Norwegian case.
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Abbas Ali Chandio, Yuansheng Jiang and Abdul Rehman
This study aims to empirically examine the relationship between energy consumption and agricultural economic growth in Pakistan over the period from 1984 to 2016.
Abstract
Purpose
This study aims to empirically examine the relationship between energy consumption and agricultural economic growth in Pakistan over the period from 1984 to 2016.
Design/methodology/approach
This study used the autoregressive distributed lag (ARDL) bounds testing approach to cointegration to investigate the long-run and short-run determinants of agricultural economic growth in Pakistan.
Findings
The results of the ARDL bounds testing approach to cointegration revealed that long-run linkage exists among the study variables. The findings of this paper showed that agricultural economic growth is positively affected by gas consumption and electricity consumption both in the long-run and short run. The long-run and short-run coefficients of gas consumption and electricity consumption were estimated to be 0.906, 0.421, 0.595 and 0.276, respectively. The estimated equation remains stable during the period from 1984 to 2016 as analyzed by the stability tests.
Originality/value
This study considers the relationship between energy consumption and agricultural economic growth in Pakistan by using an ARDL bounds testing approach to cointegration. The study has three contributions to economic literature:this study used different unit root tests to test stationarity of the variables such as ADF unit root test by Dicky and Fuller and P-P unit root test by Philip and Perron; the ARDL bounds testing approach to cointegration is applied to test the existence of long-run analysis between energy consumption and agricultural economic growth; and to check the robustness, the authors used the Johansen cointegration test to examine the long-run relationship between dependent and independent variables.
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The purpose of this paper is to examine the extent to which conventional and Islamic bank fixed deposit rates can protect depositors against inflation in the Malaysia context.
Abstract
Purpose
The purpose of this paper is to examine the extent to which conventional and Islamic bank fixed deposit rates can protect depositors against inflation in the Malaysia context.
Design/methodology/approach
Nominal interest rates are represented by commercial bank fixed deposit and investment bank fixed deposit rates. The authors use monthly data over the period 2000–2016. The authors apply the autoregressive distributed lag bounds testing methodology to test the existence of long-run relationship between nominal rates and inflation, and the error-correction model to test for the short-run dynamics.
Findings
The results show that the nominal interest rate and inflation are cointegrated for all the data series. The evidence indicates that all the fixed deposit rates, for both conventional and Islamic banks are effective inflation hedges in the long-run thereby supporting the Fisher hypothesis. There is no difference in the inflation hedging ability between conventional bank rates and Islamic bank rates. However, the authors find no evidence of the short-run relationship between interest rates and inflation for either bank.
Practical implications
Bank regulators should be concerned on the similarities in behaviour towards inflation between conventional and Islamic rates, given that the deposit rates for both banks are supposedly set based on different premises. Bank customers, they should deposit their money for the long horizon in order to protect themselves against inflation. Depositors worrying about inflation should be indifferent between conventional or Islamic as both banks provide similar inflation hedging characteristics.
Originality/value
The novelty of this study is in using the bank fixed deposit rates to study the Fisher effect in an emerging market and in comparing the conventional and Islamic bank rates in terms of their inflation hedging ability.
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This paper analyzes the impact of macroeconomic variables such as real exchange rate, exchange-rate volatility, and economic growth of the UK and Norway on Norway’s bilateral…
Abstract
This paper analyzes the impact of macroeconomic variables such as real exchange rate, exchange-rate volatility, and economic growth of the UK and Norway on Norway’s bilateral trade flow to the UK via maritime and other transport modes. The first two models considered trade volume (import and export) via only maritime transport, while the third and fourth models considered trade volume via modes other than maritime transport. The empirical validity of the Marshall-Lerner condition is tested to see whether a devaluation of the real exchange rate improves the trade balance in the long term. In addition to the long-term relationship among variables, short-term effects are also evaluated. The results show that the real income of Norway and its trading partner (the UK) is the main determinant of bilateral trade flow via maritime and other transport modes. Moreover, the results indicate that in the long run, the Marshall-Lerner condition is satisfied only for bilateral trade via modes other than maritime transport.
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Muhammad Aftab, Zaheer Abbas and Farrukh Nawaz Kayani
The purpose of this paper is to explore the impact of exchange rate volatility at sectoral level on the exports trade of Pakistan. All the sectors involved in the export trade…
Abstract
Purpose
The purpose of this paper is to explore the impact of exchange rate volatility at sectoral level on the exports trade of Pakistan. All the sectors involved in the export trade (proposed by the State Bank of Pakistan, by commodity), were used to study this relationship at a more minute level.
Design/methodology/approach
Quarterly data regarding research were collected over the period 2003 to 2010 from databases of State Bank of Pakistan and International Monetary Fund financial statistics. The bound testing approach proposed by Pesaran et al., was used to study the relationship between sectoral export and exchange rate volatility, while augmented Dickey Fuller (ADF) and Phillips Perron tests were used to test the unit root of series and GARCH,proposed by Bollerslev, was used to study exchange rate volatility.
Findings
The results show that exports are negatively influenced by exchange rate volatility and relative prices while positively affected by foreign income. This relationship holds for all sectors where bound testing revealed the existence of long‐ run relationship, although some equations results were not statistically significant.
Practical implications
The paper's findings can be used to form such policies which result in a stabilized and competitive exchange rate, so that Pakistan's exports can be increased.
Originality/value
Previous studies have been conducted on aggregated data set for exports in the Pakistani context, which hinders pertinent information; however this information is possible by studying disaggregated data. The paper fills a research gap by taking sectoral level data, to divulge the behavior of individual sectors against exchange rate volatility.
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Monica Singhania and Neha Saini
The paper attempts to revisit the nexus between economic growth, carbon emissions, trade openness, financial effectiveness and FDI for a sample of seven developed and developing…
Abstract
Purpose
The paper attempts to revisit the nexus between economic growth, carbon emissions, trade openness, financial effectiveness and FDI for a sample of seven developed and developing countries using curvilinear relationship as per environmental Kuznets curve (EKC) hypothesis over long term.
Design/methodology/approach
The authors determine the unit root properties of variables (using Clemente–Montañés–Reyes unit root test with double mean shifts and AO model and augmented Dickey–Fuller test) for structural breaks at different levels. Autoregressive distributed lag (ARDL) and error correction model (ECM) methodology was used to estimate long- and short-run parameters among the selected variables in sample countries from 1965 to 2016. Vector error correction (VEC) and Granger causality approach was used to determine the direction of causality.
Findings
The authors confirmed long-run relationship among the variables and highlighted high economic growth and energy consumption as the main causes of environmental degradation. While in India financial development and FDI inflows depict a negative association with environmental sustainability, however, such relationship was positive in the United Kingdom (UK), which is often considered as a benchmark for policymakers. The authors’ findings were in agreement with existing research insights in reporting FDI and financial development as the major contributors towards (unsustainable) sustainable environment through emissions in case of (developing country like India) developed country like UK. For other sample countries (China, Brazil, Japan, South Africa, United States of America (USA)), the authors’ model failed to capture financial development and FDI as significant contributors of carbon emissions. However, unidirectional causality running from energy to carbon emission was observed leading to the policy adoption of incentivizing alternative energy-based resources to increase energy efficiency across the energy value chain.
Research limitations/implications
Manufacturing with renewable energy, in collaboration with private and foreign players, under an institutional framework is desirable. Policy instruments including mandatory administrative controls, economic incentives and voluntary schemes that promote energy efficiency building blocks need to be established. A sound legal system for implementing technological innovation, financial subsidy incentives, interest-free loan programmes and development of financial sector supports creation and thriving of energy efficient units, often a perquisite for accelerated development.
Originality/value
By undertaking a comparative analysis, the authors address the research gap through revisiting EKC hypothesis with different set of trade policy and financial development framework. To the best of the authors’ knowledge, earlier studies were limited to one-country data analysis and did not consider the comparative data set of developed and developing countries with reference to financial development and FDI components.
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This study aims to explore the short-run and long-run relationships and causality between economic growth and financialization in the new member states (NMS-11) and to provide…
Abstract
Purpose
This study aims to explore the short-run and long-run relationships and causality between economic growth and financialization in the new member states (NMS-11) and to provide some policy implications drawn from the empirical findings.
Design/methodology/approach
The autoregressive distributed lag (ARDL) bounds test approach to cointegration with the vector error correction model and the cumulative sum of squares (CUSUMQ) test for stability of functions is used between 1995q1 and 2021q4 to examine the existence of cointegration, relationships and causality between economic growth and financialization.
Findings
The findings of the ARDL bounds test demonstrate that the variables included in the models are bound together in the long run, as confirmed by the associated equilibrium correction. The estimated models indicate that the association between selected variables and economic growth is stronger and more statistically significant in the short run compared with the long run. Also, for NMS-11 understudied countries, short-run causality prevails over long-run causality. The changes in the level of financialization have a significant negative effect on the growth rates in the short run, which aligns with findings from previous empirical studies.
Originality/value
This study extends the existing very limited literature about short-run and long-run relationships and causality among economic growth and financialization, including inflation and unemployment variables, to determine their link in the NMS-11. Specifically, the present study reveals that the current level of financialization hampers economic growth and promoting such economic policies further can have adverse effects on the overall economic growth.
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This paper provides a fuller characterization of the analytical upper bounds for American options than has been available to date. We establish properties required of analytical…
Abstract
This paper provides a fuller characterization of the analytical upper bounds for American options than has been available to date. We establish properties required of analytical upper bounds without any direct reliance on the exercise boundary. A class of generalized European claims on the same underlying asset is then proposed as upper bounds. This set contains the existing closed form bounds of Margrabe, (1978) and Chen and Yeh (2002) as special cases and allows randomization of the maturity payoff. Owing to the European nature of the bounds, across-strike arbitrage conditions on option prices seem to carry over to the bounds. Among other things, European option spreads may be viewed as ratio positions on the early exercise option. To tighten the upper bound, we propose a quasi-bound that holds as an upper bound for most situations of interest and seems to offer considerable improvement over the currently available closed form bounds. As an approximation, the discounted value of Chen and Yeh's (2002) bound holds some promise. We also discuss implications for parametric and nonparametric empirical option pricing. Sample option quotes for the European (XEO) and the American (OEX) options on the S&P 100 Index appear well behaved with respect to the upper bound properties but the bid–ask spreads are too wide to permit a synthetic short position in the early exercise option.