Chandra R. Bhat  Rajesh Paleti  Palvinder Singh 《Journal of regional science》2014,54(3):462-502

This paper proposes a new spatial multivariate model to predict the count of new businesses at a county level in the state of Texas. Several important factors including agglomeration economies/diseconomies, industrial specialization indices, human capital, fiscal conditions, transportation infrastructure, and land development characteristics are considered. The results highlight the need to use a multivariate modeling system for the analysis of business counts by sector type, while also accommodating spatial dependence effects in business counts.  相似文献   

    

J. P. Singh  Pankaj Agarwal  Ashok Kumar  S. K. Thakkar 《Journal of Earthquake Engineering》2014,18(3):444-457

Modal parameters of an instrumented multi-storied reinforced concrete building (G +9) have been studied using strong motion records of Bhuj Earthquake, 2001. The Ambient Vibration Testing (AVT) is also conducted to measure the modal parameters of the same building under ambient environmental forces. Frequency Domain Decomposition (FDD) or Peak Picking (PP) in frequency domain and Stochastic Subspace Identification (SSI) technique in time domain is used for extracting the modal parameters. The observed natural frequencies during strong motion are smaller than the ambient vibration testing. The difference in the frequencies may be caused by interaction between structure and soil due to high level of strain during strong motion earthquake. The modal pattern of first five modes obtained from strong motion records and ambient vibration records are identical.  相似文献   

    

Prabha Kalia  Prabhas Kumar Pande  Trilochan Singh 《Alcheringa: An Australasian Journal of Paleontology》2013,37(3):207-227

Foraminiferal assemblage from Permian rocks of Eastern Himalaya, India are recorded for the first time. Twenty-two genera and twenty-eight species are documented from the Garu Formation, Eastern Himalaya. The foraminiferal assemblage supports previous age determinations based on megafauna. The distinctive foraminiferal assemblage from India supports the recognition of Australian and Afghanistan-Indian provinces in the Early Permian Austral realm. An appreciable number of common species in these provinces is indicative of close geographic links.  相似文献   

    

A. V. G. Price  S. Singh 《Archaeology in Oceania》1968,3(2):123-128

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Patrick D. Nunn  Roselyn Kumar  Sepeti Matararaba  Tomo Ishimura  Johnson Seeto  Sela Rayawa  Salote Kuruyawa  Alifereti Nasila  Bronwyn Oloni  Anupama Rati Ram  Petero Saunivalu  Preetika Singh  Esther Tegu 《Archaeology in Oceania》2004,39(3):139-143

A newly‐discovered Lapita settlement at Bourewa on southwest Viti Levu Island, Fiji, was established originally on an offshore island perhaps as much as 1220 BCE by people whose main concern was optimal access to the broad fringing reef. Satellite settlements were established at nearby Rove and Waikereira later in Lapita times. The three oldest radiocarbon dates obtained from the base of the tightly‐packed shell midden layer excavated at Bourewa and charcoal in the beach sand below are calibrated/corrected to 1220‐970 BCE, 1210‐940 BCE, and 1130‐910 BCE. The Bourewa Lapita site appears to be the oldest‐known in Fiji.  相似文献   

    

Balwant Singh  Sue O'Connor  Peter Veth  Robert Gilkes 《Archaeology in Oceania》1991,26(1):17-20

Fire modifies sediments and soil by converting some crystalline clay minerals to amorphous alumino-silicate minerals that can be determined using a combination of X-ray diffraction and chemical analysis procedures. Recognition of these materials provides a test for occupation that is independent of, and complementary to, criteria based on the occurrence of cultural or magnetic properties of sediments. This novel procedure has been evaluated for artificial mineral mixtures heated in simulated hearth fires and for Pleistocene and Holocene sediments from caves in the Kimberley Region of Western Australia. An index based on amorphous Al in the samples has been developed to separate heated and unheated samples.  相似文献   

    

Surendra Singh 《Geographical analysis》2002,34(3):229-244

Important characteristics of spatial agricultural production functions are derived by introducing a non‐negative curvilinear spatial demand function for production input intensities. Given the usual neoclassical rationale assumptions of spatial demand for capital and labor inputs under competitive environment of farming in developing agricultural economies, the optimal production levels are determined by optimizing spatial demand for production inputs. Decreasing price‐to‐transport costs ratio (that is, decrease in the prices of capital goods or increase in freight rates) and increasing wage‐to‐travel costs ratio (that is, increase in labor wages or decrease in the travel rate) expand the limits of the (spatial) optimal boundary of the demand for agricultural capital goods and labor input respectively. These effects occur on account of the operation of (positive) spatial price gradient and (negative) wage‐gradient in the market region. It may be noted that elasticities of demand for production factors are spatially variant and have significant effects on the alterations in the structure of agricultural production. However, the spatial optimal solution of production has a complicated relationship with them. The price elasticity has negative and wage elasticity has positive spatial gradients in the market region. Farmers located in the periphery of the market region are not much affected by the proportionate changes occurring in the prices of agricultural capital goods but are more sensitive to the proportional changes in labor wages. Because of a decreasing trend in capital input demand and increase in labor input with distance from the market, capital‐product diminishes with a decreasing rate and labor‐product increases with an increasing rate in the spatial structure of agricultural production. As a result, capital‐labor ratio falls toward zero, which raises profit rate per unit of capital investment especially in the outer part of the market region. The equilibria of optimal production with price elasticity as well as of capital intensity with labor employment (that is, capital‐labor ratio as unity) determine spatial limits of the optimal production zone which is shifted outward subject to the provision of cheap transportation, stabilizing market prices and/or increasing wage rate at the market center. It will help in extending outwardly the optimal spatial limits of capital investment and will mobilize capital resources of farmers in the periphery for efficient and competitive capital‐dominated farming.  相似文献   

Impact of Ibn Sinā on pulse examination and materia medica of medieval period of Ayurveda     

Chaturvedi GN  Singh KP  Upadhyaya SD 《Indian journal of history of science》1986,21(4):358-362

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Vietnam and ASEAN: The politics of accommodation     

Hari Singh 《Australian Journal of International Affairs》1997,51(2):215-229

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Marisa Young  Sean Leipe  Diana Singh 《The Canadian geographer》2024,68(1):115-128

Social scientists, geographers, criminologists, and health scientists are often tasked with finding data to best capture the impact of “community context” on individual outcomes, including residential services, physical resources, and social institutions. One outlet for such data in Canada is Digital Map Technologies Inc. (DMTI) Spatial, which offers a national repository of over one million businesses and recreational points of interest. The database is generated through CanMap Streetfiles, which includes geocodes of each point's precise location. These data are available to researchers from their university data library and Esri Canada, but primarily available to private sector and government markets. That said, the goal of the current paper is to encourage researchers to access this rich yet under-utilized data source. Each service, business, or resource in the DMTI Spatial database is assigned to a respective category using Standard Industrial Classification codes and North American Industrial Classification System codes. It is not clear, however, which is the more reliable coding criteria. We provide an overview of our review of DMTI Spatial data and take-away suggestions for using this valuable resource for future research on meso-level residential markers.  相似文献