Sumita Ghosh

Bio: Sumita Ghosh is an academic researcher from University of Technology, Sydney. The author has contributed to research in topics: Sustainability & Medicine. The author has an hindex of 10, co-authored 34 publications receiving 309 citations. Previous affiliations of Sumita Ghosh include University of Wollongong & University of Sydney.

Measuring sustainability performance of local food production in home gardens

Abstract: The growing interests in “local food” in recent years in public discussions, research and practice highlight its significant importance as a part of overall food system. This research compares spatially local food production potential of home gardens in nine residential neighbourhood case studies with varying physical densities at a local scale using geographic information systems and mathematical methods. This paper develops a “local food energy model” for measuring sustainability potential of growing local food mainly vegetables in the home gardens. The outcomes indicate that potential of the home gardens in supplying vegetables demand as a share of total dietary energy would depend on the morphological characteristics of urban forms, total resident population, total food demand and other related factors. Local food production in the home gardens could meaningfully contribute towards building a sustainable food future.

Retrofitting the suburban garden: Morphologies and some elements of sustainability potential of two Australian residential suburbs compared

Abstract: Residential gardens will continue to dominate as important elements of Australian suburbs in the timeframe available for adapting to climate change. In this paper, we analyse and compare the morphologies and sustainability potential of residential suburbs and their gardens in two case studies: Traditional-suburban and Modern-suburban in the Illawarra region of New South Wales. Spatial distributions of land-cover patterns were estimated using Geographic Information Systems (ArcGIS). The four sustainability parameters measured were: roof rain water collection; local food (vegetable) production; energy and CO2 emission savings from clothes lines; and carbon benefits of onsite tree canopy cover. Outcomes suggest that land cover such as tree canopy cover and other permeable and impermeable surfaces in garden spaces can significantly impact on sustainability. Impermeable surface cover is higher in the Modern-suburban compared to the Traditional-suburban development. Traditional-suburban is more capable...

Domestic energy sustainability of different urban residential patterns: A New Zealand approach

Abstract: A quantitative study was undertaken to calculate the potential sustainability of five residential blocks in Auckland, New Zealand (NZ) of differing physical densities. The main study considered five attributes of sustainability: domestic energy, transportation, carbon sequestration, food, and waste. This paper presents the results and mathematical methodology developed for one key aspect, domestic energy. Using aerial photographs, Geographic Information System (GIS) and ecological footprint assessment techniques, domestic energy demand, generation and deficit were calculated. Research outcomes suggest that the classic New Zealand suburb with a density of 18 households per hectare might have the greatest potential to be more sustainable.

Indications from Sustainability Indicators

Abstract: Sustainability Indicators are a measure to assess progress towards sustainable development, but how and why certain indicators are produced and used is often hard to understand. There is also a lack of common ground, so that different indicators cannot be directly compared. This paper explores the suitability of some existing sustainability indicators and measurement tools in this light. It suggests there is a need to develop simple local quantitative indicators in addition to the more commonly used qualitative indicators. A new method is outlined for the development of quantitative physical indicators as part of an integrated approach to a more sustainable urban environment.

Local food production in home gardens: measuring on-site sustainability potential of residential development

Abstract: Local food production is an integrated pathway to achieving a sustainable food future, appropriate urban ecosystem maintenance and meaningful environmental impact reduction. Current urban food production policies have demonstrated the sustainability importance of growing food locally. This paper analyses local vegetable productivities associated with available productive land areas as home gardens in low, medium and high density residential urban forms using aerial photographs, spatial ArcGIS and mathematical methods. It compares the food production potential of a household in five different residential urban form case studies from the Auckland Region, New Zealand. Potential annual household savings are estimated as Land Area Equivalents (LEQs) in hectares using ecological footprint conversion methods. The case studies were compared to determine the most 'food efficient' urban form considering average and maximum production scenarios. Outcomes indicate that community behaviour change and appropriate policy measures are critical for the uptake of local food production in home gardens.

人唾液天疱疮抗原的纯化

Abstract: 1. Place animal in induction chamber and anesthetize the mouse and ensure sedation. 2. Once the animal is sedated, move it to a nose cone for hair removal using cream. Only apply cream to the area of the chest that will be utilized for imaging. Once the hair is removed, wipe area with wet gauze to ensure all hair is removed. 3. Move the animal to the imaging platform and tape its paws to the ECG lead plates and insert rectal probe. Body temperature should be maintained at 36-37°C. During imaging, reduce anesthesia to maintain proper heart rate. If the animal shows signs of being awake, use a higher concentration of anesthetic.

Urban economic theory : land use and city size

Abstract: Preface 1. Introduction Part I. Basic Theory: 2. Locational choice of the household 3. Equilibrium land use and optimal land use: single household type 4. Equilibrium land use and optimal land use: multiple household types 5. Urban aggregates and city sizes Part II. Extensions With Externalities: 6. Local public goods 7. Neighborhood externalities and traffic congestion 8. External economies, product variety, and city sizes Appendixes References Author index Subject index.

Quantifying Rooftop Solar Photovoltaic Potential for Regional Renewable Energy Policy

Abstract: Solar photovoltaic (PV) technology has matured to become a technically viable large-scale source of sustainable energy. Understanding the rooftop PV potential is critical for utility planning, accommodating grid capacity, deploying financing schemes and formulating future adaptive energy policies. This paper merges the capabilities of geographic information systems and object-based image recognition to determine the available rooftop area for PV deployment in an example large-scale region in south eastern Ontario. An innovative five-step procedure has been developed for estimating total rooftop PV potential which involves geographical division of the region; sampling using the Feature Analyst extraction software; extrapolation using roof area-population relationships; reduction for shading, other uses and orientation; and conversion to power and energy outputs. A relationship across the region was found between roof area and population of 70.0 m2/capita ± 6.2%. For this region with appropriate roof tops covered with commercial solar cells the potential PV peak power output is 5.74 GW (157% of the region’s peak power demands) and the potential annual energy production is 6909 Gwh (5% of Ontario’s total annual demand). This suggests that 30% of Ontario’s demand can be met with province-wide rooftop PV deployment. This new understanding of roof area distribution and potential PV outputs has an immense significance to energy policy formulation in Ontario and the methodology developed here is transferable in other regions to assist in solar PV deployment.