Outline of a Theory of non-Rankine-Hugoniot Shock Wave in Weak Mach Reflection

At the previous AFMC, the background for expecting a departure from Rankine-Hugoniot theory at the base of the reflected shock wave in weak Mach reflection was exposed. The results of some pertinent experiments performed in the supersonic wind tunnel were then presented. They confirmed the hypothesised irregular behaviour. In the present contribution, the elaboration of a theory of transgressed shock wave properties is presented. This concept enables to calculate the modified jump process. It fully accounts for the known experimental observations. It is the unyielding boundary conditions that prevail beyond regular reflection which force this remarkable deviation from the classical shock wave theory to take place

THE DEVELOPMENT OF E-COMMERCE CAPABILITY AND ITS IMPACT ON BUSINESS PERFORMANCE: A CASE OF MALAYSIAN MANUFACTURING INDUSTRIES

Firms around the world are embracing electronic-commerce (EC) technologies as strategic marketing tools to enhance the competitive advantage and organizational performance. Over the last two decades, EC obtained prominent importance and has become a key dimension to a firm value. Many firms have invested in this technology to compete in the fast paced business environment. However, the literature contains mixed findings of EC on overall business performance and the success of EC implementations is scarce in the literature. This study attempts to investigate why some firms are getting advantages from EC while some are not. By examining the attributes of firm’s business, human and IT resources, this research seeks to enhance an understanding of the relationship between EC capability and business performance. A total of 287 participants from manufacturing companies throughout Malaysia completed 63 items survey instrument. The instrument measured business resources, human resources, IT resources and business performance factors. Reliability and factor analysis were assessed for data screening; estimation of construct validity by confirmatory factor analysis (CFA) and the relationships between factors were established with structural equation modelling (SEM). The results of descriptive statistics and reliability presented data usability for current study and by examining firm’s business, human and IT resources the results of SEM provided the evidence of significant relationship between EC capability and business performance. This strongly suggests the necessary investments for the utilization of firm’s resources for the implementation and usage of EC technologies. The significant relationship between EC capability and business performance also provides a base to explain that EC is not only a technology; but also a complete business process needing proper strategies to gain its value. The results of this study may explain the issue of mixed business benefits from the implementation of EC technologies. Finally this investigation offers new insights that applicable to the development of EC capability and its returns. In so doing, this study may help theorists and practitioners, especially within the manufacturing industries, to develop EC strategies at post- and pre- implementation levels of EC application. This study is helpful in providing the resource-based and dynamic capability perspectives of EC in terms of better understanding and usage of the resources for the implementation of EC technology. The findings of this study can be taken into consideration for the successful usage of EC. Index terms: electronic-commerce, capability, resources, implementation, manufacturing industrie

Public Provision of Education and Government Spending in Pakistan

The study has been carried out to measure the incidence of government spending on education in Pakistan at the provincial (both rural and urban) level, using the primary data of the Pakistan Social Standard Living Measures Survey (PSLM), 2004-2005, and by employing the three-step Benefit Incidence Approach methodology. The paper reviews the national policies emphasising provision of education in Pakistan, as well as the trend in coverage and public sector spending on education facilities in Pakistan. The study examines the inequalities in resource distribution and service provision in relation to the government education expenditure. The rural areas of Pakistan are the more disadvantaged in the provision of the education facilities. Overall, the expenditure on the education sector is progressive, both at the regional and the provincial levels. However, variation exists in the shares of different income groups benefit from the provision of educational facilities created by public expenditure.education, public expenditure, Public Policy, Gini Coefficient, Concentration Coefficient, Benefit Incidence Approach

Health Care Services and Government Spending in Pakistan

The study has been carried out to measure the incidence of government spending on health in Pakistan at provincial, both rural and urban level; using the primary data of the Pakistan Social Standard Living Measures Survey (PSLM), 2004-05, and by employing the three-step Benefit Incidence Approach (BIA) methodology. The paper reviews the national policies emphasising health services as well as the trend in access to and public sector spending on health care facilities in Pakistan. The study explores the inequalities in resource distribution and service provision against the government health expenditures. The rural areas of Pakistan are the more disadvantaged in the provision of the health care facilities. The expenditures in health sectors are overall regressive in rural Pakistan as well as at provincial and regional levels. Mother and Child subhead is regressive in Punjab and General Hospitals and Clinics are regressive in all provinces. Only the Preventive Measures and health facilities sub-sector is progressive in Pakistan. Public health expenditures are pro-rich in Pakistan.health, Expenditure, Public Policy, Gini, Concentration Coefficient, Mother and Child, Preventive Measures, Hospital and Clinics

Health Care Services and Government Spending in Pakistan

The study has been carried out to measure the incidence of government spending on health in Pakistan at provincial, both rural and urban level; using the primary data of the Pakistan Social Standard Living Measures Survey (PSLM), 2004-05, and by employing the three-step Benefit Incidence Approach (BIA) methodology. The paper reviews the national policies emphasising health services as well as the trend in access to and public sector spending on health care facilities in Pakistan. The study explores the inequalities in resource distribution and service provision against the government health expenditures. The rural areas of Pakistan are the more disadvantaged in the provision of the health care facilities. The expenditures in health sectors are overall regressive in rural Pakistan as well as at provincial and regional levels. Mother and Child subhead is regressive in Punjab and General Hospitals and Clinics are regressive in all provinces. Only the Preventive Measures and health facilities sub-sector is progressive in Pakistan. Public health expenditures are pro-rich in Pakistan.Health, Expenditure, Public Policy, Gini, Concentration Coefficient, Mother and Child, Preventive Measures, Hospital and Clinics

Public Provision of Education and Government Spending in Pakistan

The study has been carried out to measure the incidence of government spending on education in Pakistan at the provincial (both rural and urban) level, using the primary data of the Pakistan Social Standard Living Measures Survey (PSLM), 2004-2005, and by employing the three-step Benefit Incidence Approach methodology. The paper reviews the national policies emphasising provision of education in Pakistan, as well as the trend in coverage and public sector spending on education facilities in Pakistan. The study examines the inequalities in resource distribution and service provision in relation to the government education expenditure. The rural areas of Pakistan are the more disadvantaged in the provision of the education facilities. Overall, the expenditure on the education sector is progressive, both at the regional and the provincial levels. However, variation exists in the shares of different income groups’ benefit from the provision of educational facilities created by public expenditure.Education, Public Expenditure, Public Policy, Gini Coefficient, Concentration Coefficient, Benefit Incidence Approach

Rural Poverty and Land Degradation: A Review of the Current State of Knowledge

By highlighting the lack of rigorous evidence and calling for a greater understanding of the interaction of the two processes, a recent study [Nelson et al. (1997)] has called into question the strong perception that poverty is both a consequence as well as a cause of resource degradation. This perception which is widely held is strongly evident in the writings of the multilateral development agencies such as the World Bank (1990) and IFAD (1992) and exists despite extensive reviews which indicate that the short- and long-term implications of land degradation are not very clear [see Scherr and Yadav (1995)]. Similarly, while knowledge about poverty is expanding rapidly, thanks in large parts to the massive international focus and resources brought to bear on its understanding in the past ten years or so; the existing state of knowledge is still far from providing a comprehensive understanding of all the complex dimensions of its processes. The understanding of the interactions of poverty and land degradation is even less clear and limited. This paper reviews the existing knowledge about the relationship between poverty and land degradation and draws implications for research.

A secure and lightweight ad-hoc routing algorithm for personal networks

Over the past few years, there has been increasing interest in utilizing Personal Area Networks (PANs) to offer users innovative and personalized services. This interest is a consequence of the widespread use of mobile devices such as laptops, mobile phones, PDAs, digital cameras, wireless headsets, etc. to carry out a variety of user-centric tasks. The PAN itself is built upon an ad-hoc network where devices trust their neighbors to route their packets. The cooperative nature of ad-hoc networks allows malicious nodes to easily cripple the network by inserting false route information, replaying old messages, modifying messages of other nodes, etc. An applicable area still under research, and the focus of this paper, is secure routing protocols for ad-hoc networks. To achieve availability in the PAN, the routing protocol used must be robust against both dynamically changing topology and malicious attacks. However, the heterogeneous nature of Personal Network (PN) devices means that traditional security mechanisms are too resource intensive to be sufficient by themselves. This paper describes a new ad-hoc secure routing protocol for Personal Networks (PNs), suitable in a limited multi-hop scenario. This protocol is based on ADOV and relies on efficient cryptographic primitives to safeguard the security and privacy of PN users. Following that, a number of attacks in the area of ad-hoc networks are discussed, and it is shown that the new algorithm protects against multiple un-coordinated active attackers, in spite of compromised nodes in the network

Delivering Access to Safe Drinking Water and Adequate Sanitation in Pakistan

Provision of safe drinking water, adequate sanitation and personal hygiene are vital for the sustainable environmental conditions and reducing the incidence of diarrhoea, malaria, trachoma, hepatitis A & B and morbidity levels. Not having access to water and sanitation is a courteous expression for a form of deprivation that threatens life, destroys opportunity and undermines human dignity. Thus, investing in the provision of safe water supply and adequate sanitation is not only a development oriented strategy in itself, it can also yield other socio-economic benefits in terms of improved health status, quality of labour force and reduced burden-of-disease. Water and Sanitation is the neglected sector in Pakistan. Most of the households in Pakistan do not have access to safe drinking water and lack toilets and adequate sanitation systems. These poor people, mostly living in rural areas or urban slums, are not only deprived of financial resources, but they also lack admittance to basic needs such as education, health, safe water supply and environmental sanitation facilities. As of 2005, approximately 38.5 million people lacked access to safe drinking water source and approximately 50.7 million people lacked access to improved sanitation in Pakistan. By year 2015, if this trend continues, 52.8 million people will be deprived of safe drinking water and 43.2 million people will have no access to adequate sanitation facilities in Pakistan. It is not to calculate what percentages of population have access to a particular service so far and how much numbers of beneficiaries will be added by year 2015; it is to investigate that even if we meet the national and/or regional targets in Pakistan, how much population will still be deprived of these most basic human needs.Drinking Water, Sanitation, Solid Waste, Waste Water, Public Policy, Public Expenditure, Hygiene