1,180 research outputs found
Dark clouds on the horizon:the challenge of cloud forensics
We introduce the challenges to digital forensics introduced by the advent and adoption of technologies, such as encryption, secure networking, secure processors and anonymous routing. All potentially render current approaches to digital forensic investigation unusable. We explain how the Cloud, due to its global distribution and multi-jurisdictional nature, exacerbates these challenges. The latest developments in the computing milieu threaten a complete “evidence blackout” with severe implications for the detection, investigation and prosecution of cybercrime. In this paper, we review the current landscape of cloud-based forensics investigations. We posit a number of potential solutions. Cloud forensic difficulties can only be addressed if we acknowledge its socio-technological nature, and design solutions that address both human and technological dimensions. No firm conclusion is drawn; rather the objective is to present a position paper, which will stimulate debate in the area and move the discipline of digital cloud forensics forward. Thus, the paper concludes with an invitation to further informed debate on this issue
(Re) producing Peruvian professionals: social assistance and maternal citizenship of impoverished Quechua mothers
Through the discourses of financial independence and "professionalization" of the offspring promoted by the medical (SIS) and social (Juntos) assistance provided by the State, Quechua women living in poverty discover that, upon entering motherhood, their full citizenship becomes conditional on successful behaviors and the stewardship of children to obtain a more "desirable" livelihood than their own. This suggests that motherhood, while poor, gives a moral value to women that the state uses to justify its monitoring and governance.
This article is based on a year of ethnographic fieldwork in rural communities and health centers or posts in the province of Vilcashuamán, department of Ayacucho, Peru. One hundred interviews were conducted with women, men, and health workers, in addition to an important participant observation.
While widespread discourses overload women's freedoms, there are alternatives to the "professionalization" of indigenous youth that do not require the financial education currently imposed on mothers. This paper suggests that the moral values assigned to poor maternity homes are sometimes unfairly used as justification for reproductive intervention and the revocation of full citizenship for poor indigenous women
Quarantime: Lockdown and the global disruption of intimacies with routine, clock time, and the intensification of time-space compression
Global lockdowns have resulted in a challenge to our carefully constructed no-tions of time, the work week and time-space compression. For the past few months, we have been living in ‘Quarantime’. Quarantime moves differently than our daily lived temporalities of routine and order, and forces us to question the intimate relationship that we may have with how we structure our daily lives around a clock and timesheet. This article questions the challenges and opportunities inherent within the disruption of routine intimacies enacted through Quarantime, drawing on case studies of clock time and the work week, and through examining Quarantime’s unique relationship to time-space compression. It will suggest that Quarantime opens up a space for us to question intimate attachments to enforced routine and wide institutionalised concepts of clock time
Pandemic ... or syndemic? Re-framing COVID-19 disease burden and 'underlying health conditions'
Venezuelan women's perception of sexual and reproductive health services in Lima, Peru
OBJECTIVES: To know the perception of Venezuelan women about sexual and reproductive health (SRH) services in Lima, Peru. MATERIALS AND METHODS: This study had a qualitative methodological approach; 50 migrant women in Lima and three obstetricians who provide SRH care by the United Nations Population Fund were interviewed, information was collected from July to December 2019. The SRH service in Lima was analyzed using the theory of "reproductive governance". RESULTS: Migrant women seek reproductive health and contraceptive information from pharmacists and pharmacies. There is an information deficit on free SRH care, concerns about lack of health insurance, cost barriers, and their migration status. CONCLUSIONS: "Reproductive governance" could be employed by pharmacists to support migrant women and to inform about public SRH services available in Lima
An Overview of the Landsat Data Continuity Mission
The advent of the Landsat Data Continuity Mission (LDCM), currently with a launch readiness date of December, 2012, will see evolutionary changes in the Landsat data products available from the U.S. Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center. The USGS initiated a revolution in 2009 when EROS began distributing Landsat data products at no cost to requestors in contrast to the past practice of charging the cost of fulfilling a request; that is, charging $600 per Landsat scene. To implement this drastic change, EROS terminated data processing options for requestors and began to produce all data products using a consistent processing recipe. EROS plans to continue this practice for the LDCM and will required new algorithms to process data from the LDCM sensors. All previous Landsat satellites flew multispectral scanners to collect image data of the global land surface. Additionally, Landsats 4, 5, and 7 flew sensors that acquired imagery for both reflective spectral bands and a single thermal band. In contrast, the LDCM will carry two pushbroom sensors; the Operational Land Imager (OLI) for reflective spectral bands and the Thermal InfraRed Sensor (TIRS) for two thermal bands. EROS is developing the ground data processing system that will both calibrate and correct the data from the thousands of detectors employed by the pushbroom sensors and that will also combine the data from the two sensors to create a single data product with registered data for all of the OLI and TIRS bands
Surface scattering properties estimated from modeling airborne multiple emission angle reflectance data
Here, researchers apply the Hapke function to airborne bidirectional reflectance data collected over three terrestrial surfaces. The objectives of the study were to test the range of natural surfaces that the Hapke model fits and to evaluate model parameters in terms of known surface properties. The data used are multispectral and multiple emission angle data collected during the Geologic Remote Sensing Field Experiment (GRSFE) over a mud-cracked playa, an artificially roughened playa, and a basalt cobble strewn playa at Lunar Lake Playa in Nevada. Airborne remote sensing data and associated field measurements were acquired at the same time. The airborne data were acquired by the Advanced Solid State Array Spectroradiometer (ASAS) instrument, a 29-spectral band imaging system. ASAS reflectance data for a cobble-strewn surface and an artificially rough playa surface on Lunar Lake Playa can be explained with the Hanke model. The cobble and rough playa sites are distinguishable by a single scattering albedo, which is controlled by material composition; by the roughness parameter, which appears to be controlled by the surface texture and particle size; and the symmetry factor of the single particle phase function, which is controlled by particle size and shape. A smooth playa surface consisting of compacted, fine-grained particles has reflectance variations that are also distinct from either the cobble site or rough playa site. The smooth playa appears to behave more like a Lambertian surface that cannot be modeled with the Hapke function
Improving the accuracy of 1D SNMR surveys using the multi-central-loop configuration
A multi-central loop configuration has been studied through forward and inverse modelling of synthetics and real data. This set-up takes advantage of the multichannel features of the NMR device and consists of using several (2 to 3) additional receiver loops displayed concentrically with the main transmitter/receiver loop, which all record the NMR signal simultaneously within a single acquisition. If the loop diameters are chosen appropriately, the kernel sensitivity distributions for each receiver loop can show complementary features. Inverting simultaneously the data sets obtained through each different receiver loop can then enhance the accuracy of the final model. To do so, a 1D QT inversion scheme in the frequency domain dedicated to the inversion of multiple data sets is being used. One challenging feature is to adapt the regularization of the inverse process so as to handle correctly the noise originating from different data sets. The efficiency of this multi-central loop acquisition set-up and procedure is being assessed through the forward and inverse modelling of several scenarios implying varying aquifer characteristics. Finally a field case is being presented that was conducted on a low noise level site located in Germany, where conditions were favourable to the implementation and testing of circular multi-central loop configurations.We also introduce a new method for determining NMR parameters, named the prediction-focused-approach (PFA), that is based on statistical analysis of a large number of simple models. We observe, using synthetic examples, that the effciency of the method benefits from the use of the multi-central-loop configurations
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