SymbioCity: reconceptualising the future of the shopping mall

Architecture, and the concept of produced space, cannot be divorced from the basic notion of society and, with this, social integration and social interaction. This thesis considers the massive potential, and missed opportunity, which the suburban shopping mall offers as a socio-economic community framework within the urban landscape. Malls have become principal sites of social communion while resisting adaptation to this new public agenda and have become disconnected from the city. Shopping has historically always been an open, public and social forum, forming an integrated part of society and the city. With the proliferation of the car and the consequent urban sprawl, however, retail has evolved into a typology that is an isolated and single-use phenomenon in the shape of the shopping mall. It is exclusive in its nature and context, and becomes a barrier to the notion of community, particularly in South Africa where this model seems to negate safety concerns but does not consider human dignity. The disconnection and lack of connectivity and access forces the architecture to become a themed space where branding is overriding and diversity is extremely limited. The public street has been privatised and becomes quasi-public; social interaction is forced to take place in a privately controlled pseudo-urban environment that turns its back on the city and the scale and texture of urbanity becomes eroded. Urban planning and current legislation permit these massive single-use forms to develop, allowing fragmented spatial and social proximities to occur without the benefit of the synergies of uses that take place as happens in naturally evolving cities. The introduction of a complimentary mix of uses will allow the mall to become a truly integrated and city-like resource. The current model is also unsustainable when viewed holistically in terms of the balanced triumvirate of economy, environment and equity, known as the ‘triple bottom line’. The mall creates a massive carbon footprint and, as part of the existing produced stock that functions well as a commercial model, needs to adapt to contemporary social and environmental needs, as well as those of the future. Opportunities for symbiotic relationships will be explored and will be introduced wherein there is a mutual and beneficial sharing of resources of both the mall and the city around it. The malls’ current form is one wherein resources are both heavily consumes and wasted. Symbiosis will form a vital and integral paradigm for looking at a mixeduse intervention where the retail, in the form of the mall, once again forms an integrated part of the city and feeds back into it. The mall will become a symbiotic typology, deriving from and linking into the urban fabric, becoming the street again, from where its roots are derived. This symbiotic paradigm will be further extended within all systems of the intervention and the mall will now become a generator of resources as apposed to its current form as a consumer of resources. Keywords: shopping, urbanity, typology, quasi-public, street, unsustainable, symbiosis QUESTION I will be dealing with the concept of the shopping mall and the inherent dichotomy of public and private space. With this, the social consequences of the suburban model as a private retail spatial phenomenon that appropriates part of the city to itself and the question of how we reconceptualise its future through symbiotic relationships in order that it relinquishes this space back to the city and the public

Intercomparison of Multiple UV-LIF Spectrometers using the Aerosol Challenge Simulator

Measurements of primary biological aerosol particles (PBAPs) have been conducted worldwide using ultraviolet light-induced fluorescence (UV-LIF) spectrometers. However, how these instruments detect and respond to known biological and non-biological particles, and how they compare, remains uncertain due to limited laboratory intercomparisons. Using the Defence Science and Technology Laboratory, Aerosol Challenge Simulator (ACS), controlled concentrations of biological and non-biological aerosol particles, singly or as mixtures, were produced for testing and intercomparison of multiple versions of the Wideband Integrated Bioaerosol Spectrometer (WIBS) and Multiparameter Bioaerosol Spectrometer (MBS). Although the results suggest some challenges in discriminating biological particle types across different versions of the same UV-LIF instrument, a difference in fluorescence intensity between the non-biological and biological samples could be identified for most instruments. While lower concentrations of fluorescent particles were detected by the MBS, the MBS demonstrates the potential to discriminate between pollen and other biological particles. This study presents the first published technical summary and use of the ACS for instrument intercomparisons. Within this work a clear overview of the data pre-processing is also presented, and documentation of instrument version/model numbers is suggested to assess potential instrument variations between different versions of the same instrument. Further laboratory studies sampling different particle types are suggested before use in quantifying impact on ambient classification.Peer reviewe

Do difficulties in accessing in-hours primary care predict higher use of out-of-hours GP services? Evidence from an English National Patient Survey.

INTRODUCTION: It is believed that some patients are more likely to use out-of-hours primary care services because of difficulties in accessing in-hours care, but substantial evidence about any such association is missing. METHODS: We analysed data from 567,049 respondents to the 2011/2012 English General Practice Patient Survey who reported at least one in-hours primary care consultation in the preceding 6 months. Of those respondents, 7% also reported using out-of-hours primary care. We used logistic regression to explore associations between use of out-of-hours primary care and five measures of in-hours access (ease of getting through on the telephone, ability to see a preferred general practitioner, ability to get an urgent or routine appointment and convenience of opening hours). We illustrated the potential for reduction in use of out-of-hours primary care in a model where access to in-hours care was made optimal. RESULTS: Worse in-hours access was associated with greater use of out-of-hours primary care for each access factor. In multivariable analysis adjusting for access and patient characteristic variables, worse access was independently associated with increased out-of-hours use for all measures except ease of telephone access. Assuming these associations were causal, we estimated that an 11% relative reduction in use of out-of-hours primary care services in England could be achievable if access to in-hours care were optimal. CONCLUSIONS: This secondary quantitative analysis provides evidence for an association between difficulty in accessing in-hours care and use of out-of-hours primary care services. The findings can motivate the development of interventions to improve in-hour access.This project is independent research arising from an Academic Clinical Fellowship awarded to YZ by the East of England Multi-Professional Deanery. GL is supported by a postdoctoral fellowship by the National Institute for Health Research (PDF-2011-04-047). The analyses form part of a larger programme of research on the GP Patient Survey funded by the Department of Health

Worldline Green Functions for Arbitrary Feynman Diagrams

We propose a general method to obtain the scalar worldline Green function on an arbitrary 1D topological space, with which the first-quantized method of evaluating 1-loop Feynman diagrams can be generalized to calculate arbitrary ones. The electric analog of the worldline Green function problem is found and a compact expression for the worldline Green function is given, which has similar structure to the 2D bosonic Green function of the closed bosonic string.Comment: 20 pages, 6 figures; v2: typos corrected, references adde

An additional deep-water mass in Drake Passage as revealed by 3He data

We present 3He data froma repeat section across Drake Passage, fromthree sections off the South American continent in the Pacific, at 28?S, 35?S, and 43?S, and fromthree sections in the Atlantic, eastward of the Malvinas, close to 35?W, and near the Greenwich Meridian. In Drake Passage, a distinct high-3He signal is observed that is centered just above the boundary of the Lower and the Upper Circumpolar Deep Water (LCDW, UCDW), and is concentrated towards the northern continental slope. 3He concentrations in the Antarctic Circumpolar Current (ACC) upstream of Drake Passage (World Ocean Circulation Experiment section P19 at 88?W) are markedly lower than those found in Drake Passage, and a regional source of primordial helium in the path of the ACC that might cause the high-3He feature can be ruled out. We explain the feature by addition of high-3He waters present at the 43?S Pacific section. This supports a previous, similar interpretation of a low-salinity anomaly in Drake Passage (Naveira Garabato et al., Deep- Sea Research I 49 (2002) 681), that is strongly related to the high-3He feature. Employing multiparameter water mass analysis (including 3He as a parameter), we find that deep waters as met at the 43?S Pacific section, flowing south along the South American continental slope, contribute substantially to the ACC waters in Drake Passage (fractions exceed 50% locally). Lesser, but laterally more extended contributions are found east of the Malvinas, and still smaller ones are present at 35?W and at the Greenwich Meridian. Using velocity measurements from one of the two Drake Passage sections, we estimate the volume transport of these waters to be 7.071.2 Sv, but the average transport may be somewhat lower as the other realization had a less pronounced signal. The enhanced 3He signature in Drake Passage is essentially confined north of the Polar Front. Further downstreamthe signature crosses this front, to the extent that at 35?W the contributions south and north of it are of similar magnitude. At the same time, the 3He levels north of the front are reduced due to a substantial admixture of low-3He North Atlantic Deep Water, such that 3He becomes highest south of the front. The flow of Southeast Pacific deep slope waters entering the ACC constitutes the predominant exit pathway of the primordial helium released in the deep Pacific, and represents a considerable fraction of the deep water return flow fromthe Pacific into the ACC. Therefore and also because the density range of the added deep slope waters is intermediate between those of UCDW and LCDW, they must be considered a distinct water mass. r 2003 Elsevier Ltd. All rights reserved

Characteristics of service users and provider organisations associated with experience of out of hours general practitioner care in England: population based cross sectional postal questionnaire survey.

OBJECTIVE: To investigate the experience of users of out of hours general practitioner services in England, UK. DESIGN: Population based cross sectional postal questionnaire survey. SETTING: General Practice Patient Survey 2012-13. MAIN OUTCOME MEASURES: Potential associations between sociodemographic factors (including ethnicity and ability to take time away from work during working hours to attend a healthcare consultation) and provider organisation type (not for profit, NHS, or commercial) and service users' experience of out of hours care (timeliness, confidence and trust in the out of hours clinician, and overall experience of the service), rated on a scale of 0-100. Which sociodemographic/provider characteristics were associated with service users' experience, the extent to which any observed differences could be because of clustering of service users of a particular sociodemographic group within poorer scoring providers, and the extent to which observed differences in experience varied across types of provider. RESULTS: The overall response rate was 35%; 971,232/2,750,000 patients returned surveys. Data from 902,170 individual service users were mapped through their registered practice to one of 86 providers of out of hours GP care with known organisation type. Commercial providers of out of hours GP care were associated with poorer reports of overall experience of care, with a mean difference of -3.13 (95% confidence interval -4.96 to -1.30) compared with not for profit providers. Asian service users reported lower scores for all three experience outcomes than white service users (mean difference for overall experience of care -3.62, -4.36 to -2.89), as did service users who were unable to take time away from work compared with service users who did not work (mean difference for overall experience of care -4.73, -5.29 to -4.17). CONCLUSIONS: Commercial providers of out of hours GP care were associated with poorer experience of care. Targeted interventions aimed at improving experience for patients from ethnic minorities and patients who are unable to take time away from work might be warranted

PSYCHOSOCIAL IMPACT OF COVID-19 ON STUDENTS AT INSTITUTIONS OF HIGHER LEARNING

Students at higher institutions of learning are more susceptible to psychosocial problems compared to the general public. These may further be exacerbated by the measures put in place to curb the spread of COVID-19. This mixed methods study examined the factors associated with the psychosocial impact of COVID-19 on students’ financial stability, interpersonal relationships and worries related to achieving academic milestones. Data comprised of a series of closed and open-ended questions collected via Qualtrics from students in the United States and Africa (Central and West). The quantitative data were analyzed using frequency counts, percentages and chi-square, while the qualitative data was analyzed using thematic content analysis. More than 90% of the students resided in the United States, 72.5% were females and 78.4% were undergraduates. Financial hardship was experienced by 26.4% of the students, 55.8% indicated that COVID-19 negatively affected their relationship with friends and over 40% worried over delays in achieving academic milestones. Continent of residence, employment status and financial hardship were significantly associated with the negative impact of COVID-19 on one or more of the students’ relationships and with worries about achieving academic milestones. Qualitative data support the findings that financial hardship contributed to experience of psychological distress by students. It also revealed negative (compromised relationships – broken or fractured relationships and loneliness) and positive (bonding) impact of COVID-19 on interpersonal relationships. School administrators should provide students with resources to access economic relief packages and tele-counseling services to help meet their financial and psychosocial support needs amidst COVID-19.  Article visualizations

Citizen Participation in Urban Services: the Administration of a Community-Based Crime Prevention Program

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/68929/2/10.1177_089976407800700105.pd