Assessing teacher effectiveness in India: overview and critical appraisal

Conclusion Assessing teacher effectiveness is a complex issue with social and historical dimensions. Assessment of teacher effectiveness was an alien concept in ancient and medieval India. The teacher's moral authority, scholarship, wisdom and role in shaping the lives of the youth and the society was unquestionable. The place of the teacher ('the Guru’) was always considered much higher than that of the parents. Original language: English J. S. Rajput (India) Has contributed in the areas of science education, elementary education and teacher education. Has guided research in the field of concept formation in science, education of minorities and tribal groups, and non-formal education. In addition to numerous research papers and articles, recent publications includeExperiences and expectations in elementary education andUniversalisation of elementary education—role of the teacher education. Appointed first Chairperson of National Council for Teacher Education. K. Walia (India) Doctorate in teacher education from the Central University of Jamia Millia Islamia (1992). Interest in elementary-stage teacher education and in the development of a competency-based teacher-education curriculum at elementary stage. Has conducted a major study on the profiles of teacher educators in India. Is co-ordinating the development of a curriculum framework for teacher education in India, a task undertaken by the National Council for Teacher Education where she is presently working as a research officer. The authors gratefully acknowledge the help rendered by Prof. O.S. Dewal in the preparation of this paper. Several ideas and suggestions offered by R.H. Dave, S.C. Behar and R. Govinda are also acknowledged. John A. Smyth of UNESCO provided the opportunity and motivation for developing this paper.     

COVID-19 and Gut Microbiota: A Potential Connection

Currently, world is facing a global outbreak causing a pandemic threat known as COVID-19. This infectious disease is triggered by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). Gut microbiota harbours multi species community with a strong impact on host immune homeostasis. However, our knowledge about this gut microbiota and its symbiotic relationship with immune activation in association with SARS-CoV-2 is limited. Unbalanced bacterial flora with too many opportunistic infections can shift immune system towards a cascade of inflammatory responses leading to multi organ damage. This review will highlight immune-regulation via various mechanisms in SARS-CoV-2 infection. Diet has an unbelievable influence on gut microbiome that allows a new state of homeostasis to be reached through timing, frequency and duration of intake. This review article focuses on gut, lung microbiota and immunomodulation with specific attention on immune activation by gut microbiota.     

On enhancing the robustness of timeline summarization test collections

Timeline generation systems are a class of algorithms that produce a sequence of time-ordered sentences or text snippets extracted in real-time from high-volume streams of digital documents (e.g. news articles), focusing on retaining relevant and informative content for a particular information need (e.g. topic or event). These systems have a range of uses, such as producing concise overviews of events for end-users (human or artificial agents). To advance the field of automatic timeline generation, robust and reproducible evaluation methodologies are needed. To this end, several evaluation metrics and labeling methodologies have recently been developed - focusing on information nugget or cluster-based ground truth representations, respectively. These methodologies rely on human assessors manually mapping timeline items (e.g. sentences) to an explicit representation of what information a ‘good’ summary should contain. However, while these evaluation methodologies produce reusable ground truth labels, prior works have reported cases where such evaluations fail to accurately estimate the performance of new timeline generation systems due to label incompleteness. In this paper, we first quantify the extent to which the timeline summarization test collections fail to generalize to new summarization systems, then we propose, evaluate and analyze new automatic solutions to this issue. In particular, using a depooling methodology over 19 systems and across three high-volume datasets, we quantify the degree of system ranking error caused by excluding those systems when labeling. We show that when considering lower-effectiveness systems, the test collections are robust (the likelihood of systems being miss-ranked is low). However, we show that the risk of systems being mis-ranked increases as the effectiveness of systems held-out from the pool increases. To reduce the risk of mis-ranking systems, we also propose a range of different automatic ground truth label expansion techniques. Our results show that the proposed expansion techniques can be effective at increasing the robustness of the TREC-TS test collections, as they are able to generate large numbers missing matches with high accuracy, markedly reducing the number of mis-rankings by up to 50%.     

Authentic game-based learning and teachers’ dilemmas in reconstructing professional practice

Teachers who attempt pedagogical innovation with authentic digital games face significant challenges because such games instantiate open systems of learner activity, inviting enquiry learning rather than knowledge acquisition. However, school environments are normatively sanctioned cultural spaces where direct instruction and high-stakes tests are de riguer. In this paper, we draw on the conceptual frame of dilemmatic spaces to illuminate the dilemmas teachers encounter when attempting to reconstruct professional practice in the classroom. We worked with nine teachers who enacted the Statecraft X social studies curriculum. Drawing on coded interview data, our findings suggest that teachers are forced to wrestle with tensions engendered by misalignments that emerge from the innovation's tacit requirement for change and the system's inherent gravitation towards maintaining the status quo. A school culture that cultivates innovative practice based on greater teacher agency is needed for authentic game-based learning to find traction in the classroom.     

Meeting the growing demand for sustainability-focused management education: a case study of a PRME academic institution

The current business landscape has created the impetus to develop management graduates with capabilities that foster responsible leadership and sustainability. Through the lens of Gitsham's 3C Model (Complexity, Context and Connection) of graduate capabilities, this paper discusses the experience of implementing the United Nations Principles for Responsible Management Education (UNPRME) at the Graduate School of Management, La Trobe University Australia. The case highlights that universities should use both a top-down and bottom-up approach, engaging students in the implementation process. The analysis also shows that educational institutions face similar challenges to business organizations in terms of resource limitations, inertia and resistance to change. While significant inroads have been made at the course and discipline level, more work needs to be done. The use of the UNPRME as a guide for delivering sustainability-focused management education has provided an opportunity to structure the change process and to provide support through partnerships.     

Developing cultural humility through experiential learning: How home visits transform early childhood preservice educators’ attitudes for engaging families

Research calls for teacher education to prepare early childhood educators for the needs of diverse and marginalized young children and their families in the U.S. With an increasing cultural divide between teachers and students, some early childhood educators may demonstrate limited understanding for how diverse cultural, linguistic, racial, and socioeconomic backgrounds inform the daily functions of families of young children. In this article, we examine how the use of experiential learning vis-à-vis conducting a home visit with a family from a diverse and marginalized background can shape early childhood preservice teachers’ (PST) development of cultural humility, an important component of cultural competence. During this experiential learning, PSTs engaged in critically reflective practices to uncover and challenge their implicit biases. While discovering the strengths and challenges among their home visit families, PSTs also learned what they had in common with the families. PSTs noted how the home visit process informed their work as future early childhood educators.     

Serodiagnosis of tuberculosis using two ELISA systems

Serodiagnosis by ELISA has been widely explored over the years, in the diagnosis of tuberculosis. Two ELISA systems were evaluated for detection of mycobacterial antibodies in pulmonary and extra pulmonary tuberculosis. The two test assays explored were ERBA LISA (TB IgG) test (Anda Biologicals) which uses A60 antigen complex found in the cytosol of typical and atypical mycobacteria, and SEVA TB (IgG) ELISA, which uses a 31 kDa, glycoprotein antigen purified fromM. tb H₃₇Ra culture filtrate. Sera from 98 proven tuberculosis [pulmonary TB (48), tuberculous lymphadenopathy (30), tuberculous meningitis (15) & genitourinary TB (5)] were studied along with 32 healthy controls. The overall positivity obtained using ERBA LISA (TB IgG) test and SEVA TB (IgG) ELISA test was 72.9% and 91.6% in pulmonary tuberculosis, 43.3% and 76.6% in tuberculous lymphadenopathy respectively. The sensitivity of ERBA LISA test in tuberculous meningitis and genito-urinary TB was significantly low (26.6% & 40% respectively) compared to sensitivity obtained using SEVA TB ELISA (86.6% & 60% respectively) with overall specificity of 60% and 87.5%. Thus SEVA TB IgG ELISA test was found to be more sensitive than ERBA LISA in detecting IgG antibodies in tuberculous sera, in particular in extra pulmonary tuberculosis cases.     

Importance of ticks and their chemical and immunological control in livestock

The medical and economic importance of ticks has long been recognized due to their ability to transmit diseases to humans and animals. Ticks cause great economic losses to livestock, and adversely affect livestock hosts in several ways. Loss of blood is a direct effect of ticks acting as potential vector for haemo-protozoa and helminth parasites. Blood sucking by large numbers of ticks causes reduction in live weight and anemia among domestic animals, while their bites also reduce the quality of hides. However, major losses caused by ticks are due to their ability to transmit protozoan, rickettsial and viral diseases of livestock, which are of great economic importance world-wide. There are quite a few methods for controlling ticks, but every method has certain shortcomings. The present review is focused on ticks importance and their control.