Exchange traded funds: leverage and liquidity

This paper examines the differences between leveraged and unleveraged Exchange Traded Funds (ETFs), particularly for liquidity and volatility characteristics. The impact of leverage on intraday liquidity (spread and depth) is analysed in two periods – one of normal volatility and the other of abnormal/high volatility. There is a significant difference in spread and depth of leveraged and unleveraged ETFs in periods of both normal volatility and high volatility; however, this difference is more pronounced in higher volatility periods. In high volatility periods, liquidity typically diminishes in all ETFs, and this is even more so for the leveraged ETFs. When leveraged ETFs are segregated into multiples based on their power to replicate the underlying benchmark (i.e. multiples of ?3, ?2, ?1, 2, 3), the difference in spreads between normal and high volatility periods is typically larger. The double-leveraged ETF has the most significant difference between the positive and negative counter parts. However, the relationship in the progression of the multiples does not change linearly to correspond with the level of volatility. This may be due to the nonlinear relation between volume and volatility. We shed light on the magnification effect of financial leverage on microstructure of the ETFs.     

Dispatching and routing of emergency vehicles in disaster mitigation using data fusion

The aim of this paper is to develop a robust methodology for the dispatching and routing of emergency vehicles (EVs) in a post-disaster environment with the support of data fusion. In this work, we consider an earthquake scenario with a large number of casualties needing medical attention. Given an influx of information (regarding casualties, road, traffic conditions, etc.), data are fused to provide estimates of the entities under consideration. We use this information to dispatch and route EVs to casualty pickup locations, followed by delivery to appropriate hospitals. Key factors here include patient priorities, clustering criteria, and distance. Similarly, factors affecting the dispatching of EVs from patient locations to hospitals include waiting time at hospital emergency rooms, hospital capacity, and distance. Routes must be generated for EVs by accounting for real-world road networks, existing road damage, congestion, and related issues. We develop a dispatching and routing simulation model, and utilize a case study to evaluate the performance of our proposed methodology.     

Land-use changes, forest/soil conditions and carbon sequestration dynamics: A bio-economic model at watershed level in Nepal

A dynamic bio-economic model has been used at watershed level in Nepal to analyze the land-use changes, forest and soil conditions and their resultant impacts on carbon (C) sequestration. Planning horizon of the model extends over a period of 25 years. The objective function is maximization of the sum of discounted net income flows from agriculture, livestock and forestry productions; imputed value of leisure and labour hiring out activities subject to annual constraints on land, labour and capital availability along with the fulfilment of minimum cash and consumption requirements. The seven scenarios analyzed by the model are: business as usual (BAU), reduction in population growth rate from 2 to 1.5% p.a., increased prices of major crops by 10 and 20%, reduction in emigration of active labour force from the watershed from the current rate of 20–15 and 10%, and increase in discount rate from 5 to 10%. The results indicate that reduced labour emigration rates and increase in the prices of major crops lead to expansion of cultivated area and shift from one land use to the others. Land clearing becomes more severe with decline in labour emigration rate. Up to 10% increase in the prices of agricultural crops does not have noticeable effect on total land clearing. Increase in discount rate leads to less land clearing, more biomass harvesting and higher net C sequestration as compared to the BAU scenario. Assuming a C price of 10 USD per MgC and 5% discount rate, the net present value of C sequestration for the first 25 years is estimated at 1.83 mill USD in the BAU scenario, varying from 0.16 mill USD to 2.26 mill USD, as respectively the lowest and highest values for the seven scenarios analysed. A reduction in population growth and maintenance of current rate of off-farm employment are suggested for slowing down the expansion of cultivated land area, and thereby reducing the forest/soil degradation and C emissions. This in turn would enhance the income potential from C sequestration.     

Mean square error estimation in multi-stage sampling

Summary: Suppose for a homogeneous linear unbiased function of the sampled first stage unit (fsu)-values taken as an estimator of a survey population total, the sampling variance is expressed as a homogeneous quadratic function of the fsu-values. When the fsu-values are not ascertainable but unbiased estimators for them are separately available through sampling in later stages and substituted into the estimator, Raj (1968) gave a simple variance estimator formula for this multi-stage estimator of the population total. He requires that the variances of the estimated fsu-values in sampling at later stages and their unbiased estimators are available in certain `simple forms'. For the same set-up Rao (1975) derived an alternative variance estimator when the later stage sampling variances have more ‘complex forms’. Here we pursue with Raj's (1968) simple forms to derive a few alternative variance and mean square error estimators when the condition of homogeneity or unbiasedness in the original estimator of the total is relaxed and the variance of the original estimator is not expressed as a quadratic form.  We illustrate a particular three-stage sampling strategy and present a simulation-based numerical exercise showing the relative efficacies of two alternative variance estimators. Received: 19 February 1999     

Extreme exclusion and relative deprivation in subsistence marketplaces: A study in a refugee settlement in Nakivale,Uganda

We study how refugees in a settlement face extreme marketplace exclusion through three phases of qualitative research. Overlaying the context of subsistence marketplaces, such exclusion is accentuated by refugee status, fleeing from unimaginable suffering. We interpret our findings in terms of relative deprivation, or the state of feeling deprived relative to some social reference, often used to understand how consumers feel deprived in terms of their relative financial status. We extend relative deprivation theory in research, introducing extreme marketplace deprivation. Whereas most relative deprivation research emphasizes social comparisons to other people, our study of the refugee settlement demonstrates the adverse effects of intrapersonal relative deprivation, that is, feeling deprived relative to one's past. We develop a theoretical framework to demarcate types of extreme marketplace deprivation, classifying these experiences in terms of consumption and livelihood along three facets (material, social, and psychological). We derive implications for consumer affairs.     

Deposit Insurance, Capital Adequacy Requirements and Interest Rate Dynamics

This paper examines the long run interaction among deposit insurance, bank deposit rates and capital adequacy requirements. Using analysis similar to the price discrimination model of Lott and Roberts (1991) we find that a competitive environment among banks would link the spread between insured and uninsured deposit rates to the size of the insurance premium. We also find that banks that choose to operate at the regulatory minimum capital level, would increase asset risk with increased capital requirements if (1) the implicit interest paid to insured and uninsured depositors is equally sensitive to changes in risk and capital adequacy and (2) the insurance premium is independent of the level of risk and capital adequacy. Under the present risk-based premium structure, asset risk has the potential to decline when the regulatory agency raises capital requirements. Finally, we examine the time series behavior of insured and uninsured interest rates to see if it is consistent with our theoretical model. We find that insured and uninsured rates, along with deposit insurance premiums, are cointegrated series as suggested by our model.     

Self-service innovativeness scale: introduction,development, and validation of scale

Consumer innovativeness is a central variable in innovation diffusion and adoption literature. The foremost challenge confronted by investigators involved in innovation diffusion and adoption research is the problem of measuring the innovativeness construct. Furthermore, a scale measuring innovativeness towards self-service technologies (SSTs) adoption is required as SSTs have grown considerably in the last few decades. To this end, this study develops and validates a self-service innovativeness (SSI) scale applicable across a variety of SSTs. The study presents a series of six distinct phases describing the development and validation of a six-item, self-report scale. The innovativeness scale has been validated in different contexts, allowing comparisons across distinct samples (i.e., student vs. non-student sample) and different industries (i.e., retail and hospitality industries). The SSI scale presented in this paper is short, valid, reliable, and easy to administer in service domains.     

Explainable AI: from black box to glass box

Journal of the Academy of Marketing Science -     

India's New Economic Policy of 1991 and its Impact on Women's Poverty and AIDS

This paper examines the effects of current policies intended to liberalize the Indian economy and facilitate globalization on women close to poverty. The New Economic Policy of 1991 included standard structural adjustment measures including the devaluation of the rupee, increase in interest rates, reduction in public investment and expenditure, reduction in public sector food and fertilizer subsidies, increase in imports and foreign investment in capital-intensive and high-tech activities, and abolition of the cash compensatory support for exports. These policies have resulted in increased urbanization, and fewer job opportunities for women in the formal sector. Such conditions increase poverty for women in particular. As a result, many women flow into cities looking for work in the informal sector. This may have increased numbers of women in sex work, for lack of better economic opportunity. Sufficient data are not available to confirm whether HIV infection rates have risen as a result; however, the evidence suggests there may be a relationship between macroeconomic policies and health outcomes.