Effect of interparticle forces on the fluidization of fine particles

Report studies elucidation and description of effect of interparticle forces on feasibility of gaseous fluidization of particles below 50 microns in diameter. Interparticle forces are determined by inclined-plane method. Study indicated that fluidizability is related to the interparticle adhesive force

Underdeveloped Spot Markets and Futures Trading: The Soya Oil Exchange in India

Abstract The limited presence of futures exchanges in developing countries where commodity markets fall short of the ideal underscore the importance of understanding the relation between spot and futures markets. The paper examines the exceptional success of the soya oil contract at the National Board of Trade (NBOT) in India. The paper asks whether the NBOT contract exhibits the fundamental features of mature futures markets in terms of its use by hedgers. If the market offers arbitrage opportunities to hedgers and if such activity is significant, then the activities of commercial firms should affect the returns to their hedging portfolio i.e., change in basis. This insight is developed into an examination of the impact of soya oil imports on the basis. Despite the lack of key market institutions such as certified warehouses and centralized spot prices, the NBOT contract compares well with mature exchanges. Soya oil imports exercise a significant impact on the basis and provide enough short-term volatility to make the contract attractive to both hedgers and speculators.basis, hedging, futures market, spot markets, soya oil, Marketing, G13, Q13,

Reforming food subsidy scheme: Estimating the gains from self-targetting in India

This paper uses the theoretical framework of the theory of tax reform to analyse whether a "small" change in an existing food subsidy program can be welfare-improving and revenue-neutral. It shows how existing econometric methods can be adapted to estimate demand parameters even when household level data exhibit little price variation because the government controls food prices. The methodology developed here is used to estimate welfare changes from shifting a rupee of subsidy on existing commodities to coarse cereals in the Indian public distribution system.

Decasticization, Dignity, and ‘Dirty Work’ at the Intersections of Caste, Memory, and Disaster

In this qualitative study we examine the role of caste, class, and Dalit janitorial labor in the aftermath of floods in Chennai, India, in 2015. Drawing from a variety of sources including interviews, social media, and news coverage, we studied how Dalit (formerly known as ‘untouchable’) janitors were treated during the performance of janitorial labor for cleaning the city. Our study focuses on two theoretical premises: (a) caste-based social relations reproduce inequalities by devaluing Dalit labor as ‘dirty work’; and (b) Dalit subjectivities, labor, and sufferings including occupational hazards become invisible and ungrievable forcing Dalits to provide a counter narrative to preserve the memory of their trauma and dignity injuries. We find that the discursive construction of janitorial labor as dirty work forced Dalit janitors to work in appalling and unsafe working conditions. Janitors suffered several dignity injuries in terms of social exclusion and a lack of recognition for their efforts and accomplishments. Specifically, we examine various ways through which caste, dirty work, and dignity intersected in the narrative accounts of Dalit janitors. We also explore memory and how processes of remembering and forgetting affected the dignity claims of Dalit janitors

The economics of GM food labels: An evaluation of mandatory labeling proposals in India

"Labeling of genetically modified (GM) foods is a contentious issue and internationally, there is sharp division whether such labeling ought to be mandatory. This debate has reached India where the government has proposed mandatory labeling. In this context, this paper evaluates the optimal regulatory approach to GM food labels. Mandatory labeling aims to provide greater information and correspondingly more informed consumer choice. However, even without such laws, markets have incentives to supply labeling. So can mandatory labeling achieve outcomes different from voluntary labeling? The paper shows that this is not the case in most situations. The paper goes on to explore the special set of circumstances, where mandatory labeling makes a difference to outcomes. If these outcomes are intended, mandatory labeling is justified; otherwise not." from Authors' AbstractBiotechnology Economic aspects, Genetically modified food Developing countries, Biosafety, Food labeling,

Smart, Responsible, and Upper Caste Only: Measuring Caste Attitudes through Large-Scale Analysis of Matrimonial Profiles

Discriminatory caste attitudes currently stigmatize millions of Indians, subjecting individuals to prejudice in all aspects of life. Governmental incentives and societal movements have attempted to counter these attitudes, yet accurate measurements of public opinions on caste are not yet available for understanding whether progress is being made. Here, we introduce a novel approach to measure public attitudes of caste through an indicator variable: openness to intercaste marriage. Using a massive dataset of over 313K profiles from a major Indian matrimonial site, we precisely quantify public attitudes, along with differences between generations and between Indian residents and diaspora. We show that younger generations are more open to intercaste marriage, yet attitudes are based on a complex function of social status beyond their own caste. In examining the desired qualities in a spouse, we find that individuals open to intercaste marriage are more individualistic in the qualities they desire, rather than favoring family-related qualities, which mirrors larger societal trends away from collectivism. Finally, we show that attitudes in diaspora are significantly less open, suggesting a bi-cultural model of integration. Our research provides the first empirical evidence identifying how various intersections of identity shape attitudes toward intercaste marriage in India and among the Indian diaspora in the US.Comment: 12 pages; Accepted to be published at ICWSM'1

Aggregation in area yield insurance:The linear additive model

Earlier analyses of area yield crop insurance schemes used a linear additive model (LAM) to express the relationship between individual and area yield. Although similar to the capital asset pricing model used in finance, the theoretical foundations of the LAM are unknown. A contribution of this paper is the derivation of the precise conditions under which area aggregation results in a LAM, thus establishing a link between micro variables and LAM parameters. The conditions are two-fold. They relate to the interaction of risks in individual technologies and on the extent of aggregation. We show that if systemic and individual risks are additive in individual yields and if the aggregation is such that the law of large numbers hold then the LAM obtains. The paper also shows how departures from these conditions affect the results derived from a LAM analysis.Area yield, Beta, Crop insurance, Systemic risks