Curriculum learning-based strategy for low-density archaeological mound detection from historical maps in India and Pakistan.

This paper presents two algorithms for the large-scale automatic detection and instance segmentation of potential archaeological mounds on historical maps. Historical maps present a unique source of information for the reconstruction of ancient landscapes. The last 100 years have seen unprecedented landscape modifications with the introduction and large-scale implementation of mechanised agriculture, channel-based irrigation schemes, and urban expansion to name but a few. Historical maps offer a window onto disappearing landscapes where many historical and archaeological elements that no longer exist today are depicted. The algorithms focus on the detection and shape extraction of mound features with high probability of being archaeological settlements, mounds being one of the most commonly documented archaeological features to be found in the Survey of India historical map series, although not necessarily recognised as such at the time of surveying. Mound features with high archaeological potential are most commonly depicted through hachures or contour-equivalent form-lines, therefore, an algorithm has been designed to detect each of those features. Our proposed approach addresses two of the most common issues in archaeological automated survey, the low-density of archaeological features to be detected, and the small amount of training data available. It has been applied to all types of maps available of the historic 1″ to 1-mile series, thus increasing the complexity of the detection. Moreover, the inclusion of synthetic data, along with a Curriculum Learning strategy, has allowed the algorithm to better understand what the mound features look like. Likewise, a series of filters based on topographic setting, form, and size have been applied to improve the accuracy of the models. The resulting algorithms have a recall value of 52.61% and a precision of 82.31% for the hachure mounds, and a recall value of 70.80% and a precision of 70.29% for the form-line mounds, which allowed the detection of nearly 6000 mound features over an area of 470,500 km2, the largest such approach to have ever been applied. If we restrict our focus to the maps most similar to those used in the algorithm training, we reach recall values greater than 60% and precision values greater than 90%. This approach has shown the potential to implement an adaptive algorithm that allows, after a small amount of retraining with data detected from a new map, a better general mound feature detection in the same map.

Informal settlements, Covid-19 and sex workers in Kenya.

This paper highlights the challenges faced by female sex workers living and working in the urban informal settlements in Nairobi, Kenya, during the Covid-19 outbreak and the aftermath of the pandemic. Using data collected through phone interviews during the immediate crisis, we document the experiences of urban poor sex workers, illustrating the acute problems they faced, including precarious housing with the reality of eviction and demolition. The paper highlights the ramifications of the Covid-19 crisis for the sex industry and predominantly women working within this informal, illegal economy. Through our empirical data we illustrate how the nature of selling sex has changed for sex workers in this context, increasing risks of violence including police abuses. We argue that examining the Covid-19 crisis through the lens of one the most marginalised populations graphically highlights how the pandemic has and will continue to deepen pre-existing structural urban inequalities and worsen public health outcomes among the urban poor. Sex worker communities are often located at the intersections of structural inequalities of gender, class, race and nation and the socio-spatial fragmentations of how they live make them some of the most vulnerable in society. We close with comments in relation to sexual citizenship, exclusionary state practices and the feminisation of urban poverty.

Access to Healthcare in a time of COVID-19: Sex Workers in Crisis in Nairobi, Kenya.

This paper uses empirical data collected from 117 female sex workers living in informal settlements in Nairobi and 15 healthcare providers to highlight specific effects of COVID-19 and related restrictions on healthcare access for the sex workers. We highlight the existing gender and health inequalities that have now been reinforced by the initial outbreak of the COVID-19 pandemic. Specifically, we focus on the most concerning healthcare needs for the sex workers including HIV prevention, care and treatment and sexual and reproductive healthcare. Our study findings reveal that the various restrictions imposed by the government to help curb the spread of COVID-19 to a large extent made it difficult for the sex workers to access their healthcare needs. The paper discusses the challenges of healthcare service delivery reflecting on some innovative and pioneering responses from health care providers to address the emergency situation.

Risking safety and rights: online sex work, crimes and 'blended safety repertoires'.

It has been well established that those working in the sex industry are at various risks of violence and crime depending on where they sell sex and the environments in which they work. What sociological research has failed to address is how crime and safety have been affected by the dynamic changing nature of sex work given the dominance of the internet and digital technologies, including the development of new markets such as webcamming. This paper reports the most comprehensive findings on the internet-based sex market in the UK demonstrating types of crimes experienced by internet-based sex workers and the strategies of risk management that sex workers adopt, building on our article in the British Journal of Sociology in 2007. We present the concept of 'blended safety repertoires' to explain how sex workers, particularly independent escorts, are using a range of traditional techniques alongside digitally enabled strategies to keep themselves safe. We contribute a deeper understanding of why sex workers who work indoors rarely report crimes to the police, reflecting the dilemmas experienced. Our findings highlight how legal and policy changes which seek to ban online adult services advertising and sex work related content within online spaces would have direct impact on the safety strategies online sex workers employ and would further undermine their safety. These findings occur in a context where aspects of sex work are quasi-criminalized through the brothel keeping legislation. We conclude that the legal and policy failure to recognize sex work as a form of employment, contributes to the stigmatization of sex work and prevents individuals working together. Current UK policy disallows a framework for employment laws and health and safety standards to regulate sex work, leaving sex workers in the shadow economy, their safety at risk in a quasi-legal system. In light of the strong evidence that the internet makes sex work safer, we argue that decriminalisation as a rights based model of regulation is most appropriate.

Adherence to accelerometer protocols among women from economically disadvantaged neighborhoods.

BACKGROUND: Objective measurement of physical activity with accelerometers is a challenging task in community-based intervention research. Challenges include distribution of and orientation to monitors, nonwear, incorrect placement, and loss of equipment. Data collection among participants from disadvantaged populations may be further hindered by factors such as transportation challenges, competing responsibilities, and cultural considerations. METHODS: Research staff distributed accelerometers and provided an orientation that was tailored to the population group. General adherence strategies such as follow-up calls, daily diaries, verbal and written instructions, and incentives were accompanied by population-specific strategies such as assisting with transportation, reducing obstacles to wearing the accelerometer, tailoring the message to the participant population, and creating a nonjudgmental environment. RESULTS: Sixty women asked to wear the Actigraph GT1M returned the accelerometer, and 57 of them provided sufficient data for analysis (at least 10 hours a day for a minimum of 4 days) resulting in 95% adherence to the protocol. Participants wore the accelerometers for an average of 5.98 days and 13.15 hours per day. CONCLUSIONS: The high accelerometer monitoring adherence among this group of economically disadvantaged women demonstrates that collection of high-quality, objective physical activity data from disadvantaged populations in field-based research is possible.

Designing out vulnerability, building in respect: violence, safety and sex work policy.

One recent finding about the prostitution market is the differences in the extent and nature of violence experienced between women who work on the street and those who work from indoor sex work venues. This paper brings together extensive qualitative fieldwork from two cities in the UK to unpack the intricacies in relation to violence and safety for indoor workers. Firstly, we document the types of violence women experience in indoor venues noting how the vulnerabilities surrounding work-based hazards are dependent on the environment in which sex is sold. Secondly, we highlight the protection strategies that indoor workers and management develop to maintain safety and order in the establishment. Thirdly, we use these empirical findings to suggest that violence should be a high priority on the policy agenda. Here we contend that the organizational and cultural conditions that seem to offer some protection from violence in indoor settings could be useful for informing the management of street sex work. Finally, drawing on the crime prevention literature, we argue that it is possible to go a considerable way to designing out vulnerability in sex work, but not only through physical and organizational change but building in respect for sex workers rights by developing policies that promote the employment/human rights and citizenship for sex workers. This argument is made in light of the Coordinated Prostitution Strategy.