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743 items in total found

Journal Articles | 2017

Relevance of clean coal technology for India’s energy security: A policy perspective

Amit Garg, Vineet Tiwari, and Saritha Vishwanathan

IOP Conference Series: Earth and Environmental Science

Climate change mitigation regimes are expected to impose constraints on the future use of fossil fuels in order to reduce greenhouse gas (GHG) emissions. In 2015, 41% of total final energy consumption and 64% of power generation in India came from coal. Although almost a sixth of the total coal based thermal power generation is now super critical pulverized coal technology, the average CO2 emissions from the Indian power sector are 0.82 kg-CO2/kWh, mainly driven by coal. India has large domestic coal reserves which give it adequate energy security. There is a need to find options that allow the continued use of coal while considering the need for GHG mitigation. This paper explores options of linking GHG emission mitigation and energy security from 2000 to 2050 using the AIM/Enduse model under Business-as-Usual scenario. Our simulation analysis suggests that advanced clean coal technologies options could provide promising solutions for reducing CO2 emissions by improving energy efficiencies. This paper concludes that integrating climate change security and energy security for India is possible with a large scale deployment of advanced coal combustion technologies in Indian energy systems along with other measures.

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Journal Articles | 2017

Cost-effective architecture of carbon capture and storage (CCS) grid in India

Amit Garg, P.R.Shukla, Shrutika Parihar, Udayan Singh, and Bhushan Kankal

International Journal of Greenhouse Gas Control

Various modeling studies analyzing global 2 °C climate stabilization scenarios have projected penetration of CO2 capture and storage (CCS) technologies in India alongside a sizable penetration of renewable energy technologies. The assessments of geological storage potential over India have shown wide variation across regions. This paper examines the locations of large point sources of CO2 emissions in India and matches it with carbon storage locations to minimize the cost of CCS evolving grid. The concept of weighted Euclidean distance and Integrated Environmental Control Model are used to propose suitable pipeline networks for emissions-intensive clusters to optimize the cost of CO2 avoidance. The computational method estimates proximate storage location for each CO2 emitting source taking into account the total storage potential at each location. CCS requirement in India would vary depending on the global climate stabilization target. We examine two targets for India that correspond to 2 °C and well below 2 °C global mitigation regimes. According to our estimates, India could mitigate around 780 Mt CO2 per year below 60 $/t-CO2 (2005 prices) over 30 years, and another 250 Mt CO2 per year for up to 75 $/t-CO2 prices through CCS under these scenarios respectively.

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Journal Articles | 2017

Energy appliance transformation in commercial buildings in India under alternate policy scenarios

Amit Garg, Jyoti Maheshwari, P.R.Shukla, and Rajan RawalKordrostami

Energy, 140(1), 952-965

The total electricity consumption from commercial sector was about 9% during 2013–14 in India. Load research survey was carried out to study the usage patterns for all types of electric appliances used in commercial establishments at income, appliance and end-use levels in Gujarat state of India – one of the most progressive states. Penetration level of efficient appliances, electricity load curves and Energy Performance Index (EPI) were estimated. The mean EPI was 98 kWh/m2/year (SD = 105.5) for surveyed small commercial establishments (low income) while mean EPI was 181 kWh/m2/year (SD = 68) for surveyed large commercial establishments (Malls). Electricity saving potentials was estimated if electric appliances at these commercial establishments were replaced with efficient appliances. Four alternate scenarios were analyzed using cost of conserved energy (CCE) curves with various efficiency enhancement options – following at least commercial sub-category level median EPIs, following average EU equivalent EPI levels, following average EPI levels of equivalent US commercial establishments, and following the best available technologies (BAT). The average energy savings ranged between 14% and 25% across buildings and scenarios. Energy efficient air-conditioner and LED lights offer the highest energy savings potential among appliances.

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Journal Articles | 2017

Negotiating absent practices and dormant features: discourse as a means of shaping the implementation of a global enterprise system to meet local work culture

George Kandathil and Erica L. Wagner

2017 CHI Conference

The introduction of a new enterprise system to an organization often necessitates the accommodation of standardized practices, which may be in conflict with local users' practices and their work culture. We explore such a conflict in an India-based multinational organization using an eight-month interpretive case study. Based on grounded analysis, we present a narrative account of how consultants, on contract for managing the deployment and making necessary adjustments, used discourse as a means of shaping user understanding about the features and practices embedded in the underlying system, which were not initially realized through the interface. Sustained user resistance to this shaping led to a negotiated compromise and adaptation of the system to incorporate local work culture. Our findings allow us to explore the under-theorized role of discursive power within an implementer-user-technology trio, and illustrate the feedback utility of user resistance in developing culturally-inclusive designs.

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Journal Articles | 2017

Family deviance, self-control, deviant lifestyles, and youth violent victimization: A latent indirect effects analysis

Margit Wiesner and Kathan Shukla

Victims & Offenders

Research increasingly explores more complex relations of low self-control and context factors, such as structural constraints that limit behavioral lifestyle options, with violent victimization. The authors extend extant research by examining indirect effects of low self-control and family deviance on violent victimization via deviant lifestyles. The hypothesized full indirect effects model is tested for 233 African American and Hispanic 11th-grade students using latent variable analysis. Results offer strong support for the full indirect effects hypothesis. Results generally support the utility of an integrative framework that includes structural constraints arising from the family setting.

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Journal Articles | 2017

Association of grade configuration with school climate for 7th and 8th grade students

Marisa Malone, Dewey Cornell, and Kathan Shukla

School Psychology Quarterly

Educational authorities have questioned whether middle schools provide the best school climate for 7th and 8th grade students, and proposed that other grade configurations such as K–8th grade schools may provide a better learning environment. The purpose of this study was to compare 7th and 8th grade students’ perceptions of 4 key features of school climate (disciplinary structure, student support, student engagement, and prevalence of teasing and bullying) in middle schools versus elementary or high schools. Multilevel multivariate modeling in a statewide sample of 39,036 7th and 8th grade students attending 418 schools revealed that students attending middle schools had a more negative perception of school climate than students in schools with other grade configurations. Seventh grade students placed in middle schools reported lower disciplinary structure and a higher prevalence of teasing and bullying in comparison to those in elementary schools. Eighth grade students in middle schools reported poorer disciplinary structure, lower student engagement, and a higher prevalence of teasing and bullying compared to those in high schools. These findings can guide school psychologists in identifying aspects of school climate that may be troublesome for 7th and 8th grade students in schools with different grade configurations. (APA PsycInfo Database Record (c) 2019 APA, all rights reserved)

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Journal Articles | 2017

Racial/ethnic differences in perceptions of school climate and its association with student engagement and peer aggression

Timothy Konold, Dewey Cornell, Kathan D. Shukla, and Francis Huang

Journal of Youth and Adolescence

Research indicates that a positive school climate is associated with higher levels of student engagement and lower rates of peer aggression. However, less attention has been given to whether such findings are consistent across racial/ethnic groups. The current study examined whether Black, Hispanic, and White high school students differed in their perceptions of school climate, student engagement, and peer aggression as measured by the Authoritative School Climate survey. In addition, the study tested whether the associations between school climate and both student engagement and peer aggression varied as a function of racial/ethnic group. The sample consisted of 48,027 students in grades 9–12 (51.4 % female; 17.9 % Black, 10.5 % Hispanic, 56.7 % White, and 14.9 % other) attending 323 high schools. Regression models that contrasted racial/ethnic groups controlled for the nesting of students within schools and used student covariates of parent education, student gender, and percentage of schoolmates sharing the same race/ethnicity, as well as school covariates of school size and school percentage of students eligible for free- or reduced-price meals. Perceptions of school climate differed between Black and White groups, but not between Hispanic and White groups. However, race/ethnicity did not moderate the associations between school climate and either engagement or peer aggression. Although correlational and cross-sectional in nature, these results are consistent with the conclusion that a positive school climate holds similar benefits of promoting student engagement and reducing victimization experiences across Black, Hispanic, and White groups.

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Journal Articles | 2017

A two-step latent profile method for identifying invalid respondents in self-reported survey data

Kathan D. Shukla and Timothy Konold

Journal of Experimental Education

Insincere respondents can have an adverse impact on the validity of substantive inferences arising from self-administered questionnaires (SAQs). The current study introduces a new method for identifying potentially invalid respondents from their atypical response patterns. The two-step procedure involves generating a response inconsistency (RI) score for each participant and scale on the SAQ and subjecting the resulting scores to latent profile analysis to identify classes of atypical RI respondent profiles. The procedure can be implemented post–data collection and is illustrated through a survey of school climate that was administered to N = 52,102 high school students. Results of this screening procedure revealed high levels of specificity and expected levels of concordance when contrasted with the results of traditionally used methods of screening items and response time. Contrasts between valid and invalid respondents revealed similar patterns across the three screening procedures when compared across external measures of academics and risk behaviors.

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Journal Articles | 2017

Does school climate mean the same thing in the United States as in Mexico? A focus on measurement invariance

Kathan D. Shukla, Tracy E. Waasdorp, Sarah Lindstrom Johnson, Mercedes Gabriela Orozco Solis, Amanda J. Nguyen, Cecilia Colunga Rodríguez, and Catherine P. Bradshaw

Journal of Psychoeducational Assessment

School climate is an important construct for guiding violence prevention efforts in U.S. schools, but there has been less consideration of this concept in its neighboring country Mexico, which has a higher prevalence of violence. The U.S. Department of Education outlined a three-domain conceptualization of school climate (i.e., safe and supportive schools model) that includes engagement, safety, and the school environment. To examine the applicability of this school climate model in Mexico, the present study tested its measurement invariance across middle school students in the United States (n = 15,099) and Mexico (n = 2,211). Findings supported full invariance for engagement and modified-safety scales indicating that factor loadings and intercepts contributed almost equally to factor means, and scale scores were comparable across groups. Partial invariance was found for the environment scales. Results of a multigroup confirmatory factor analysis (MGCFA) consisting of all 13 school climate scales indicated significantly positive associations among all scales in the U.S. sample and among most scales in the Mexico sample. Implications of these findings are discussed.

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Journal Articles | 2017

Institutional discourses and ascribed disability identities

Mukta Kulkarni, K.V.Gopakumar, and Devi Vijay

IIMB Management Review,

In the present study we asked: how do institutional discourses, as represented in mass media such as newspapers, confer identities upon a traditionally marginalised collective such as those with a disability? To answer our question, we examined Indian newspaper discourse from 2001 to 2010, the time period between two census counts. We observed that disability identities—that of a welfare recipient, a collective with human rights, a collective that is vulnerable, and that engages in miscreancy—were ascribed through selective highlighting of certain aspects of the collective, thereby socially positioning the collective, and through the associated signalling of institutional subject positions. Present observations indicate that identities of a collective can be governed by institutional discourse, that those “labelled” can themselves reinforce institutionally ascribed identities, and that as institutional discourses confer identities onto the marginalised, they simultaneously also signal who the relatively more powerful institutional actors are.

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