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Pune, India

Deccan College Post-Graduate and Research Institute also referred as Deccan College is a post-graduate institute of Archeology and Linguistics in Pune, India. Wikipedia.

Agarwal S.,Dehradun Institute of Technology | Pandey R.K.,Deccan College Post-Graduate and Research Institute | Pradhan A.,Hindu Post graduate College
Indian Journal of Physics

The present study deals with a spatially homogeneous and anisotropic Bianchi-II cosmological models representing massive strings in normal gauge for Lyra's manifold by applying the variation law for generalized Hubble's parameter that yields a constant value of deceleration parameter. The variation law for Hubble's parameter generates two types of solutions for the average scale factor, one is of power-law type and other is of the exponential form. Using these two forms, Einstein's modified field equations are solved separately that correspond to expanding singular and non-singular models of the universe respectively. The energy-momentum tensor for such string as formulated by Letelier (Phys Rev D 28:2414, 1983) is used to construct massive string cosmological models for which we assume that the expansion (θ) in the model is proportional to the component σ 1 1 of the shear tensor σ i j . This condition leads to A = (BC) m, where A, B and C are the metric coefficients and m is proportionality constant. Our models are in accelerating phase which is consistent with the recent observations. It has been found that the displacement vector β behaves like cosmological term λ in the normal gauge treatment and the solutions are consistent with recent observations of SNe Ia. It has been found that massive strings dominate in the decelerating universe, whereas strings dominate in the accelerating universe. Some physical and geometric behaviours of these models are also discussed. © 2012 Indian Association for the Cultivation of Science. Source

Mishra S.,Deccan College Post-Graduate and Research Institute | Gaillard C.,French Natural History Museum | Hertler C.,Senckenberg Institute | Moigne A.-M.,French Natural History Museum | Simanjuntak T.,Center for Prehistoric and Austronesian Studies
Quaternary International

The archaeological, paleontological and hominin records of India and Java are compared. It is argued that during the Lower and Middle Pleistocene, the palaeolithic technology in both the regions was Large Flake Acheulian (LFA) which is attested to by numerous sites in Peninsular India, some finds from Pinjor exposures in NW India and the site of Ngebung in the Sangiran dome area of Java. We argue that the non-Acheulian assemblages attributed to this period actually come from later contexts. During the Lower and Middle Pleistocene, fauna in Java associated with Homo erectus was related to the Indian Pinjor fauna. Although hominin fossils have not been found in India for this time period, it is likely that Homo erectus was the maker of the LFA tools in India, given the presence of LFA in Java in strata with a Pinjor related fauna and Homo erectus. Sometime during the Late Pleistocene the fauna in Java underwent a very significant change from the earlier Pinjor related fauna (Stegodon- Homo-erectus fauna) to the Punung fauna (Elephas-Homo sapiens). This change is related to an ecological shift from a more savannah like to a more rainforest like environment. It is during this time, rather than earlier, that the " Movius line" has an archaeological, paleontological and ecological validity. © 2009 Elsevier Ltd and INQUA. Source

Singhvi A.K.,Physical Research Laboratory | Williams M.A.J.,University of Adelaide | Rajaguru S.N.,Deccan College Post-Graduate and Research Institute | Misra V.N.,Deccan College Post-Graduate and Research Institute | And 6 more authors.
Quaternary Science Reviews

An 18.4 m excavated dune section in the Thar Desert of India with a chronology based on 12 TL ages and a basal age of ∼190 ka has preserved 12 cycles of dune accretion, soil formation, calcrete development, and subsequent erosion, together with the presence of stone artefacts ranging in age from Lower Palaeolithic to Mesolithic, coeval with more humid climatic interludes. Phases of soil development and carbonate precipitation were relatively wet and phases of dune accretion relatively dry, so that there were 12 significant moist intervals separated by 11 drier intervals during the past ∼190 ka. The calculated time interval between successive phases of dune sand accumulation ranged from 22.2 ka to 15.8 ka, with a mean of 19.0 ka. These values are consistent with a precessional influence on dune activity and on the associated onset of early monsoonal activity in this region. Carbon isotopes measured on organic matter within the sand profiles show consistent values close to -21.6 ± 1‰, pointing to deposition during a transitional climatic regime characterized by a change from open C3 grassland to C4 woodland or forest. © 2010 Elsevier Ltd. Source

Robbins Schug G.,Appalachian State University | Gray K.,University College London | Mushrif-Tripathy V.,Deccan College Post-Graduate and Research Institute | Sankhyan A.R.,Anthropological Survey of India
International Journal of Paleopathology

Thousands of settlements stippled the third millennium B.C. landscape of Pakistan and northwest India. These communities maintained an extensive exchange network that spanned West and South Asia. They shared remarkably consistent symbolic and ideological systems despite a vast territory, including an undeciphered script, standardized weights, measures, sanitation and subsistence systems, and settlement planning. The city of Harappa (3300-1300. B.C.) sits at the center of this Indus River Valley Civilization. The relatively large skeletal collection from Harappa offers an opportunity to examine biocultural aspects of urban life and its decline in South Asian prehistory. This paper compares evidence for cranial trauma among burial populations at Harappa through time to assess the hypothesis that Indus state formation occurred as a peaceful heterarchy. The prevalence and patterning of cranial injuries, combined with striking differences in mortuary treatment and demography among the three burial areas indicate interpersonal violence in Harappan society was structured along lines of gender and community membership. The results support a relationship at Harappa among urbanization, access to resources, social differentiation, and risk of interpersonal violence. Further, the results contradict the dehumanizing, unrealistic myth of the Indus Civilization as an exceptionally peaceful prehistoric urban civilization. © 2012 Elsevier Inc. Source

Schug G.R.,Appalachian State University | Blevins K.E.,Appalachian State University | Cox B.,Appalachian State University | Gray K.,University College London | Mushrif-Tripathy V.,Deccan College Post-Graduate and Research Institute

In the third millennium B.C., the Indus Civilization flourished in northwest India and Pakistan. The late mature phase (2200-1900 B.C.) was characterized by long-distance exchange networks, planned urban settlements, sanitation facilities, standardized weights and measures, and a sphere of influence over 1,000,000 square kilometers of territory. Recent paleoclimate reconstructions from the Beas River Valley demonstrate hydro-climatic stress due to a weakened monsoon system may have impacted urban centers like Harappa by the end of the third millennium B.C. the impact of environmental change was compounded by concurrent disruptions to the regional interaction sphere. Climate, economic, and social changes contributed to the disintegration of this civilization after 1900 B.C. We assess evidence for paleopathology to infer the biological consequences of climate change and socio-economic disruption in the post-urban period at Harappa, one of the largest urban centers in the Indus Civilization. Bioarchaeological evidence demonstrates the prevalence of infection and infectious disease increased through time. Furthermore, the risk for infection and disease was uneven among burial communities. Corresponding mortuary differences suggest that socially and economically marginalized communities were most vulnerable in the context of climate uncertainty at Harappa. Combined with prior evidence for increasing levels of interpersonal violence, our data support a growing pathology of power at Harappa after 2000 B.C. Observations of the intersection between climate change and social processes in proto-historic cities offer valuable lessons about vulnerability, insecurity, and the long-term consequences of short-term strategies for coping with climate change. © 2013 Robbins Schug et al. Source

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