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Muhammad Ali Nasir, Alaa M. Soliman, Milton Yago and Junjie Wu

Abstract

This concise study analyses the symmetry of financial markets’ responses to macroeconomic policy interaction in the United Kingdom. Employing the Vector Auto-regression (VAR) model on monthly data of the British financial sector and macroeconomic policies from January 1985 to August 2008, this study found that the equity and sovereign debt markets showed identical symmetry in response to macroeconomic policy interaction.

Open access

Trang Huyen My Pham and Muhammad Ali Nasir

Abstract

The fast growth of fashion brands and the popularity of counterfeit goods has posed certain challenges to the existing and new luxury fashion brand players. This study elaborates on the factors driving the market for counterfeit products in the UK. The data collected by means of survey questionnaires from 306 respondents and empirical techniques including descriptive and inferential statistics (correlation and multiple regression analysis), have shown that the consumers have a negative attitude towards counterfeit luxury products. However, they showed fewer tendencies to seek for a brand whose counterfeit cannot easily be found and preferred to buy a genuine rather than a counterfeit. In terms of frequency of purchase, reversion to counterfeit has negative impact, unlike the tendency to seek a brand whose counterfeit is hard to find. The overall results show that the attitude and acceptance of counterfeit do not greatly prevail in the market. However, about 27% of respondents demonstrated either a positive or a neutral tendency towards counterfeit products, which could have serious implications for the luxury goods market.

Open access

Muhammad Ali Nasir, Milton Yagob, Alaa Solimanc and Junjie Wud

Abstract

This study has analysed the implications of institutional design of macroeconomic policy making institutions for the macroeconomic policy interaction and financial sector in the United Kingdom. Employing a Vector Error Correction (VEC) model and using monthly data from January 1985 to August 2008 we found that the changes in institutional arrangement and design of policy making authorities appeared to be a major contributing factor in dynamics of association between policy coordination/combination and financial sector. It was also found that the independence of the Bank of England (BoE) and withdrawal from the Exchange Rate Mechanism led to the increase in macroeconomic policy maker’s ability to coordinate and restore financial stability. The results imply that although institutional autonomy in the form of instrument independence (monetary policy decisions) could bring financial stability, there is a strong necessity for coordination, even in Post-MPC (Monetary Policy Committee) and the BoE independence.

Open access

Farrukh Jamal, M. H. Tahir, Morad Alizadeh and M. A. Nasir

Abstract

Generalizing distributions is important for applied statisticians and recent literature has suggested several ways of extending well-known distributions. We propose a new class of distributions called the Marshall-Olkin Burr X family, which yields exible shapes for its density such as symmetrical, left-skewed, right-skewed and reversed-J shaped, and can have increasing, decreasing,constant, bathtub and upside-down bathtub hazard rates shaped. Some of its structural properties including quantile and generating functions, ordinary and incomplete moments, and mean deviations are obtained. One special model of this family, the Marshall- Olkin-Burr-Lomax distribution, is investigated in details. We also derive the density of the order statistics. The model parameters are estimated by the maximum likelihood method. For illustrative purposes, three applications to real life data are presented.

Open access

Farrukh Jamal, Mohammad A. Aljarrah, M. H. Tahir and M. Arslan Nasir

Abstract

In this paper, we introduce a new extended generalized Burr III family of distributions in the so- called T-Burr III {Y} family by using the quantile functions of a few popular distributions. We derive the general mathematical properties of this extended family including explicit expressions for the quantile function, Shannon entropy, moments and mean deviations. Three new Burr III sub-families are then investigated, and four new extended Burr III models are discussed. The density of Burr III extended distributions can be symmetric, left-skewed, right-skewed or reversed-J shaped, and the hazard rate shapes can be increasing, decreasing, bathtub and upside-down bathtub. The potentiality of the newly generated distributions is demonstrated through applications to censored and complete data sets.

Open access

M. Arshad Javid, M. Rafi, Ihsan Ali, Fayyaz Hussain, M. Imran and Ali Nasir

Abstract

Pure and Sn-doped ZnO nanostructures were synthesized by simple chemical solution method. In this method we used zinc nitrate and NaOH as precursors. Sn doping content in ZnO was taken with the ratio 0, 5, 10, 15 and 20 percent by weight. Physical properties of Sn-doped ZnO powder were studied by XRD analysis which revealed that Sn doping had a significant effect on crystalline quality, grain size, intensity, dislocation density and strain. The calculated average grain size of pure ZnO was 21 nm. The best crystalline structure was found for 0 wt.%, 5 wt.% and 10 wt.% Sn doping as observed by FESEM and XRD. However, higher Sn-doping (> 10 wt.%) degraded the crystallinity and the grain size of 27.67 nm to 17.76 nm. The structures observed in FESEM images of the samples surfaces were irregular and non-homogeneous. EDX depicted no extra peak of impurity and confirmed good quality of the samples.

Open access

M. Zakria, Taj Muhammad Khan, Abbas Nasir and Arshad Mahmood

Abstract

Cd1−xZnxS thin films of variable compositions (x = 0.2, 0.4, 0.6, 0.8) were deposited on glass at room temperature by thermal evaporation process. The prepared samples were annealed at two different temperatures (300 °C, 400 °C) for 1 hour in ambient air. The effects of post-annealing on the structural and optical characteristics were investigated using X-ray diffraction (XRD), spectrophotometry, and Raman spectroscopy (RS) methods. XRD studies suggested that the annealed and as-deposited samples belong to wurtzite structure for all Zn concentrations with a preferential orientation along (002) plane. Spectrophotometry analysis of the samples revealed that the energy band gap decreased with annealing temperature. RS investigated different phonon bands and crystalline phases. Two longitudinal optical phonon modes (1-LO, 2-LO) corresponding to monophase hexagonal structure were observed for all Cd1−xZnxS samples. The observed red-shift and anti-symmetrical nature of the 1-LO phonon mode can be associated with annealing, while the overall blue-shift, except for x ⩽ 0.6, was caused by the structural disorders in periodic Cd atomic sub-lattices and broken translational symmetry. The spectroscopic results were strengthened by the XRD studies and their results are consistent.

Open access

Muhammad Ali Nasir, Junjie Wu and José Calderón Guerrero

Abstract

This paper examines the relationship between tourism and economic growth, analyzing key factors affecting tourism income in Andalucía, Spain. Based on time series annual data for the period 2005 to 2012 and a multiple regression analysis we show that international tourism has made an important contribution to Andalucía’s economic growth. Some of the factors considered in the analysis include the number of luxury hotels, the hotel price index and the exchange rate, though the latter is outside of the control of local authorities under the European Monetary Union (EMU).

Open access

Syed Mudassir Laeeq, Abbas Ali Tasneem, Farina M. Hanif, Nasir Hassan Luck, Rajesh Mandhwani and Rajesh Wadhva

Abstract

Background and Objectives

The risk of upper gastrointestinal bleeding (UGIB) is increased among the end-stage renal disease (ESRD) patients. The aim of the current study was to describe the causes and characteristics of UGIB in ESRD patients at our center and to assess the need for endoscopic therapeutic intervention (ETI) using Rockall (RS) and Glasgow Blatchford scores (GBS).

Material and Methods

All patients with ESRD and UGIB with age ≥14 years were included. Frequencies and percentages were computed for categorical variables. Chi square test or Fischer’s exact test was used for statistical analysis.

Results

A total of 59 subjects had a mean age of 47.25 ± 15 years.The most common endoscopic findings seen were erosions in 33 (55.9%) patients, followed by ulcers in 18 (30.3%) patients. ETI was required in 33 (55.9%) patients, which included adrenaline injection in 19 (32.3%), hemoclip in 9 (15.2%) and argon plasma coagulation in 5 (8.4%) patients. Factors associated with the need of ETI were identified as: a combined presentation of hematemesis and melena (P=0.033), ulcer (P=0.002) and associated chronic liver disease (P=0.015). Six (10.1%) patients died. Death was more common if ETI was not performed (P=0.018).

Conclusion

ETI was more commonly required in patients on maintenance hemodialysis with UGIB, who had presence of combined hematemesis and melena, ulcers and associated chronic liver disease. A Glasgow Blatchford score of >14 was helpful in assessing the need for ETI in these patients.

Open access

Dinar Melani Hutajulu, M. Nasir and Arwansyah

Abstract

Pakpak Bharat Regency is an area with the lowest Gross Regional Domestic Product and Income percapita from 33 regency/city in North Sumatera Province. Because of this problem, to be important to know how the base sectors can improve the economy of Pakpak Bharat Regency. In this research, the study aims: (1) To know the base sectors in the economy of Pakpak Bharat Regency (2) To know the sector clasification of Gross Regional Domestic Product (GRDP) in Pakpak Bharat Regency (3) To know how the base sectors effect the Gross Regional Domestic Product of Pakpak Bharat Regency. The data used in this study is secondary data and readings related to research. The tests used in this study are Klassen Typology, Location Quotient, and Least Square test. The research finds that: (1) the economics of Pakpak Bharat Regency is divided into several quadrants, is advanced and rapidly growing sectors (Quadrant I), advanced but depressed sectors (Quadrant II), potential sector (Quadrant III), and lagging sector (Quadrant IV). (2) sectors classified as advanced sectors in Quadrant I and Quadrant II (amounting to 4 sectors) are basic sectors in Pakpak Bharat Regency with LQ>1. (3) there is a positive and significant influence between the base sector on the GRDP of Pakpak Bharat Regency.