VISHAL SINGH - Academia.edu (original) (raw)
BALLB(hons) Aligarh Muslim University,
LLM- WBNUJS
Address: FATEHGARH, FARRUKHABAD
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Papers by VISHAL SINGH
Materials Science and Engineering: B, 1996
At/PMMA composites containing different volume fractions of atuminium were prepared by attritor m... more At/PMMA composites containing different volume fractions of atuminium were prepared by attritor milling followed by hot pressing and their thermal expansion and electrical behaviour were studied. Room temperature resistivity of these composites dropped by several orders of magnitude when the volume percent of aluminium ranged between 20 and 40 vol.%. MicrostructuraI examination revealed the presence of continuous chains of aluminium in highly conducting composites. The dielectric constant and dissipation factor of the composites increased with increase in aluminium content. This has been attributed to the interracial polarization associated with aluminium particles.
Journal of Applied Polymer Science, 2003
Dielectric properties of Al-epoxy composites were characterized as a function of composition, fre... more Dielectric properties of Al-epoxy composites were characterized as a function of composition, frequency, and temperature. The dielectric constant increased smoothly with an increase in the concentration of aluminum. An increase in dielectric constant was also observed with an increase in temperature as well as with a decrease in frequency. In general, dissipation factor values for composites with higher concentrations of aluminum were greater than those with lower volume content of aluminum. Also, the dissipation factor showed an increase both with a decrease in frequency and an increase in temperature. The increase in values of dielectric constant and dissipation fac-tor with an increase in concentration of aluminum was attributed to interfacial polarization. The absence of any discontinuity in the plot of dielectric constant versus composition was ascribed to the absence of continuous aluminum chains in the composition range investigated. The increase in dielectric constant with a rise in temperature was attributed to the segmental mobility of the polymer molecules.
Marketing Science, 2009
T he concept of one-to-one marketing is intuitively appealing, but there is little research that ... more T he concept of one-to-one marketing is intuitively appealing, but there is little research that investigates the value of individual-level marketing relative to segment-level or mass marketing. In this paper, we investigate the financial benefits of and computational challenges involved in one-to-one marketing. The analysis uses data from an online grocery and drug retailer. Like many retailers, this firm uses multiple promotional instruments including discount coupons, free shipping offers, and a loyalty program. We investigate the impact of customizing these promotions on the two most important consumer decisions: the decision to buy from the store and expenditure. Our modeling approach accounts for two sources of heterogeneity in consumers' responsiveness to various marketing mix elements: cross-sectional differences across consumers and temporal differences within consumers based on the purchase cycle. The model parameter estimates are fed into a dynamic programming model that determines the optimal number, sequence, and timing of promotions to maximize retailer profits. A series of policy simulations show that customizing promotions leads to a significant increase in profits relative to the firm's current practice of uniform promotions. However, the effectiveness of various promotions varies because of both cross-sectional differences in consumers as well within consumer heterogeneity due to purchase cycle factors. For instance, we find that free shipping tends to be the preferred instrument for re-acquiring lapsed customers, whereas an across-the-board price cut (via a discount coupon) is the most effective tool for managing the segment of most active customers. Interestingly, we find that customizing based on withincustomer temporal heterogeneity contributes more to profitability than exploiting variations across consumers. This is important because the computational burden of implementing the dynamic optimization to account for cross-sectional heterogeneity is far greater than accounting for temporal heterogeneity. Furthermore, targeting promotions based only on timing rather than the nature and magnitude of the offers across consumers alleviates the public relations risks of price discrimination. Implications for marketing managers are also discussed.
Auto rental firms offer a menu of prices that differ across car quality (eg Midsize vs. Economy) ... more Auto rental firms offer a menu of prices that differ across car quality (eg Midsize vs. Economy) and consumer types (Business vs. Leisure customers). This paper analyzes the impact of competition on price discrimination in the auto rental market. We assemble an ...
Materials Science and Engineering: B, 1996
At/PMMA composites containing different volume fractions of atuminium were prepared by attritor m... more At/PMMA composites containing different volume fractions of atuminium were prepared by attritor milling followed by hot pressing and their thermal expansion and electrical behaviour were studied. Room temperature resistivity of these composites dropped by several orders of magnitude when the volume percent of aluminium ranged between 20 and 40 vol.%. MicrostructuraI examination revealed the presence of continuous chains of aluminium in highly conducting composites. The dielectric constant and dissipation factor of the composites increased with increase in aluminium content. This has been attributed to the interracial polarization associated with aluminium particles.
Journal of Applied Polymer Science, 2003
Dielectric properties of Al-epoxy composites were characterized as a function of composition, fre... more Dielectric properties of Al-epoxy composites were characterized as a function of composition, frequency, and temperature. The dielectric constant increased smoothly with an increase in the concentration of aluminum. An increase in dielectric constant was also observed with an increase in temperature as well as with a decrease in frequency. In general, dissipation factor values for composites with higher concentrations of aluminum were greater than those with lower volume content of aluminum. Also, the dissipation factor showed an increase both with a decrease in frequency and an increase in temperature. The increase in values of dielectric constant and dissipation fac-tor with an increase in concentration of aluminum was attributed to interfacial polarization. The absence of any discontinuity in the plot of dielectric constant versus composition was ascribed to the absence of continuous aluminum chains in the composition range investigated. The increase in dielectric constant with a rise in temperature was attributed to the segmental mobility of the polymer molecules.
Marketing Science, 2009
T he concept of one-to-one marketing is intuitively appealing, but there is little research that ... more T he concept of one-to-one marketing is intuitively appealing, but there is little research that investigates the value of individual-level marketing relative to segment-level or mass marketing. In this paper, we investigate the financial benefits of and computational challenges involved in one-to-one marketing. The analysis uses data from an online grocery and drug retailer. Like many retailers, this firm uses multiple promotional instruments including discount coupons, free shipping offers, and a loyalty program. We investigate the impact of customizing these promotions on the two most important consumer decisions: the decision to buy from the store and expenditure. Our modeling approach accounts for two sources of heterogeneity in consumers' responsiveness to various marketing mix elements: cross-sectional differences across consumers and temporal differences within consumers based on the purchase cycle. The model parameter estimates are fed into a dynamic programming model that determines the optimal number, sequence, and timing of promotions to maximize retailer profits. A series of policy simulations show that customizing promotions leads to a significant increase in profits relative to the firm's current practice of uniform promotions. However, the effectiveness of various promotions varies because of both cross-sectional differences in consumers as well within consumer heterogeneity due to purchase cycle factors. For instance, we find that free shipping tends to be the preferred instrument for re-acquiring lapsed customers, whereas an across-the-board price cut (via a discount coupon) is the most effective tool for managing the segment of most active customers. Interestingly, we find that customizing based on withincustomer temporal heterogeneity contributes more to profitability than exploiting variations across consumers. This is important because the computational burden of implementing the dynamic optimization to account for cross-sectional heterogeneity is far greater than accounting for temporal heterogeneity. Furthermore, targeting promotions based only on timing rather than the nature and magnitude of the offers across consumers alleviates the public relations risks of price discrimination. Implications for marketing managers are also discussed.
Auto rental firms offer a menu of prices that differ across car quality (eg Midsize vs. Economy) ... more Auto rental firms offer a menu of prices that differ across car quality (eg Midsize vs. Economy) and consumer types (Business vs. Leisure customers). This paper analyzes the impact of competition on price discrimination in the auto rental market. We assemble an ...