Food (in)security communication: a Journal of Applied Communication Research forum addressing current challenges and future possibilities     

Megan K. Schraedley  Hamilton Bean  Sarah E. Dempsey  Mohan J. Dutta  Kathleen P. Hunt  Sonia R. Ivancic 《Journal of Applied Communication Research》2020,48(2):166-185

ABSTRACT

This forum brings together food, (in)security, and communication. The authors participating in this forum center communication as both process and tool for understanding, mitigating, and making meaning of food (in)security. The nine authors together discuss the role of communication in food (in)security, the central challenges for scholars and practitioners working on food (in)security, and the creative possibilities and impacts influencing the future of food (in)security. The forum produces a call for applied scholars to re-imagine communication frameworks in order to make meaningful differences in their communities.  相似文献   

Adverse Events Reported From  COVID-19 Vaccine Trials: A Systematic Review     

Rimple Jeet Kaur  Siddhartha Dutta  Pankaj Bhardwaj  Jaykaran Charan  Sameer Dhingra  Prasenjit Mitra  Kavita Singh  Dharmveer Yadav  Praveen Sharma  Sanjeev Misra 《Indian journal of clinical biochemistry : IJCB》2021,36(4):427

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Prospective primary teachers’ perceptions about the use of mathematics homework     

Sven Trenholm  Mohan Chinnappan 《Teacher Development》2019,23(1):50-63

The benefit of homework (HW) has been the subject of ongoing debate among various stakeholders. Within this debate, and in relation to teacher development, prospective teachers’ views of HW have received limited attention. In this study, we survey primary pre-service teachers’ (‘PSTs’) views of HW use (n = 45 teaching grades 2–5; n = 39 teaching grades 6 and 7) in a single discipline (mathematics) at one large Australian university.

The literature suggests students in upper primary and secondary grades will benefit from the use of mathematics HW. Results of the study, in contrast, suggest our PSTs teaching early primary grades planned to give proportionally (but not significantly) more mathematics HW than those teaching later grades. Reasons for this disparity are discussed. We argue there is a need in teacher development to equip PSTs with a better understanding of how classroom and home-based learning work together in the development of mathematical understanding.  相似文献   

Is Sex Really Necessary? And Other Questions for Lewens     

Matthen  Mohan 《The British journal for the philosophy of science》2003,54(2):297-308

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QTL analysis for some quantitative traits in bread wheat     

Pushpendra KG  Harindra SB  Pawan LK  Neeraj K  Ajay K  Reyazul RM  Amita M  Jitendra K 《Journal of Zhejiang University. Science. B》2007,8(11):807-814

Quantitative trait loci (QTL) analysis was conducted in bread wheat for 14 important traits utilizing data from four different mapping populations involving different approaches of QTL analysis. Analysis for grain protein content (GPC) sug- gested that the major part of genetic variation for this trait is due to environmental interactions. In contrast, pre-harvest sprouting tolerance (PHST) was controlled mainly by main effect QTL (M-QTL) with very little genetic variation due to environmental interactions; a major QTL for PHST was detected on chromosome arm 3AL. For grain weight, one QTL each was detected on chromosome arms 1AS, 2BS and 7AS. QTL for 4 growth related traits taken together detected by different methods ranged from 37 to 40; nine QTL that were detected by single-locus as well as two-locus analyses were all M-QTL. Similarly, single-locus and two-locus QTL analyses for seven yield and yield contributing traits in two populations respectively allowed detection of 25 and 50 QTL by composite interval mapping (CIM), 16 and 25 QTL by multiple-trait composite interval mapping (MCIM) and 38 and 37 QTL by two-locus analyses. These studies should prove useful in QTL cloning and wheat improvement through marker aided selection.  相似文献   

Negotiations of cultural identities by Indian women engineering students in US engineering programmes     

Debalina Dutta 《Journal of Intercultural Communication Research》2016,45(3):177-195

The paper analyses the identities of Indian women engineers in the gendered organizational context of US engineering programmes. Participant narratives discuss the ways in which women are subjected to identity struggles in India due to gendered patrifocal norms that impose structural, societal, and familial pressures on women. Subsequently, when these women enter US engineering programmes, they encounter a highly masculine organizational and cultural space. Participants discuss identity dislocations, transformations, and assimilation as they seek to meld into the existing structures and find a career trajectory. I draw upon liminality theory to explore the cultural transitions, identity restructuring, and negotiations of Indian women engineers, navigating the intersections of competing and intersecting cultural norms of gender and engineering in India and the US, work, and family. The findings indicate the layers of gendered ideology that constitute engineering education in India and the US, the societal pressures of marriage and family rooted in patrifocal Indian norms, the barriers to finding an engineering job, the resources within the structures that support women, and the identification of patriarchy as the enactment of agency and as a site for change.  相似文献   

The Integration of Prelaboratory Assignments within Neuroanatomy Augment Academic Performance,Increase Engagement,and Enhance Intrinsic Motivation in Students     

Venugopala Rao Bhagavathula  Viswakanth Bhagavathula  Rohan S. Moinis  Joydeep Dutta Chaudhuri 《Anatomical sciences education》2022,15(3):576-586

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Iterated gain-based stochastic filters for dynamic system identification     

Tara Raveendran  Debasish Roy  Ram Mohan Vasu 《Journal of The Franklin Institute》2014

We propose a novel form of nonlinear stochastic filtering based on an iterative evaluation of a Kalman-like gain matrix computed within a Monte Carlo scheme as suggested by the form of the parent equation of nonlinear filtering (Kushner–Stratonovich equation) and retains the simplicity of implementation of an ensemble Kalman filter (EnKF). The numerical results, presently obtained via EnKF-like simulations with or without a reduced-rank unscented transformation, clearly indicate remarkably superior filter convergence and accuracy vis-à-vis most available filtering schemes and eminent applicability of the methods to higher dimensional dynamic system identification problems of engineering interest.  相似文献   

Effect of Joule heating on isoelectric focusing of proteins in a microchannel     

Kisoo Yoo  Jaesool Shim  Prashanta Dutta 《Biomicrofluidics》2014,8(6)

Electric field-driven separation and purification techniques, such as isoelectric focusing (IEF) and isotachophoresis, generate heat in the system that can affect the performance of the separation process. In this study, a new mathematical model is presented for IEF that considers the temperature rise due to Joule heating. We used the model to study focusing phenomena and separation performance in a microchannel. A finite volume-based numerical technique is developed to study temperature-dependent IEF. Numerical simulation for narrow range IEF (6 < pH < 10) is performed in a straight microchannel for 100 ampholytes and two model proteins: staphylococcal nuclease and pancreatic ribonuclease. Separation results of the two proteins are obtained with and without considering the temperature rise due to Joule heating in the system for a nominal electric field of 100 V/cm. For the no Joule heating case, constant properties are used, while for the Joule heating case, temperature-dependent titration curves and thermo-physical properties are used. Our numerical results show that the temperature change due to Joule heating has a significant impact on the final focusing points of proteins, which can lower the separation performance considerably. In the absence of advection and any active cooling mechanism, the temperature increase is the highest at the mid-section of a microchannel. We also found that the maximum temperature in the system is a strong function of the ΔpK? value of the carrier ampholytes. Simulation results are also obtained for different values of applied electric fields in order to find the optimum working range considering the simulation time and buffer temperature. Moreover, the model is extended to study IEF in a straight microchip where pH is formed by supplying H⁺ and OH⁻, and the thermal analysis shows that the heat generation is negligible in ion supplied IEF.  相似文献   

Using the Productive Pedagogies Framework to Build a Community of Learners Online in Mathematics Education     

Mohan Chinnappan 《Distance Education》2006,27(3):355-369

Productive pedagogies (PP) is an influential framework for teaching and learning that has featured well in current reforms of teacher education. The present study was designed to examine principles of PP adopted by a cohort of beginning mathematics teachers. A networked online learning environment, WebCT?, facilitated the teachers’ deliberations about PP. The uptake of PP by these new teachers was examined in the context of a collaborative activity in which the teachers were required to reflect on, critique, and share views with peers about a lesson on the teaching of multiplication. These online interactions are argued to provide opportunities for shared learning and activity. Qualitative analyses of the results show that participants espoused and embraced dimension of PP in varying degrees. The implications for using WebCT? and similar online course management systems to support teacher reflections on best practice are discussed.  相似文献