A new source-splitting approach to the Slepian-Wolf problem

It is shown that achieving an arbitrary rate-point in the achievable region of the M-source Slepian-Wolf [1] problem may be reduced via a practical source-splitting transformation to achieving a corner point in a 2M − 1 source Slepian-Wolf problem. Moreover, each source must be split at most once. This approach extends the ideas introduced in [2] to a practical setting: it does not require common randomness shared between splitters and the decoders, the cardinality of each source split is strictly smaller than the original, and practical iterative decoding methods can achieve rates near the theoretical bound

There’s more to us than this: A qualitative study of Black young adults’ perceptions of media portrayals of HIV

The extent to which the targeted group attends to and is engaged by HIV/STI prevention messages is one component of effective health communication. Through an empirical examination of the cumulative perceptions of HIV/STI prevention media messages targeted to Black youth and young adults, this qualitative study privileges the voices of Black/ African American young adults as a group that is frequently targeted in HIV prevention campaigns. Semi-structured interviews with 23 Black/African American young adults yielded key themes that suggest barriers to effective health communication. Traditionally, health promotion has advocated for targeted messages as a means to increase risk perception and promote behavior change. For some study participants, the unintended consequences of this approach with HIV prevention included a perception that cumulatively media messages (1) portrayed HIV as a “Black disease; (2) blamed Black people for the HIV epidemic; and (3) fostered negative judgments about Black people. Participants described mixed feelings because they perceived that the messages simultaneously increased awareness for HIV prevention in the Black community as well as perpetuated stigma of the Black community. The findings challenge existing notions about targeting health communication particularly when focusing on stigmatized illnesses

Case of chronic indolent pheochromocytoma that caused medically controlled hypertension but treatment-resistant diabetes mellitus

No abstract available

On some new approaches to practical Slepian-Wolf compression inspired by channel coding

This paper considers the problem, first introduced by Ahlswede and Körner in 1975, of lossless source coding with coded side information. Specifically, let X and Y be two random variables such that X is desired losslessly at the decoder while Y serves as side information. The random variables are encoded independently, and both descriptions are used by the decoder to reconstruct X. Ahlswede and Körner describe the achievable rate region in terms of an auxiliary random variable. This paper gives a partial solution for the optimal auxiliary random variable, thereby describing part of the rate region explicitly in terms of the distribution of X and Y

Data report: late Miocene to early Pliocene coccolithophore and foraminiferal preservation at Site U1338 from scanning electron microscopy

The late Miocene to early Pliocene carbonate-rich sediments recovered at Integrated Ocean Drilling Program (IODP) Site U1338 during the Expedition 320/321 Pacific Equatorial Age Transect (PEAT) program contain abundant calcareous nanno- and microfossils. Geochemical proxies from benthic and planktonic foraminiferal and coccolithophore calcite could be very useful at this location; however, good preservation of the calcite is crucial for the proxies to be robust. Here, we evaluate the preservation of specific benthic and planktonic foraminifer species and coccolithophores in fine fraction sediment at Site U1338 using backscattered electron (topography mode) scanning electron microscopy (BSE-TOPO SEM). Both investigated foraminiferal species, Cibicidoides mundulus and Globigerinoides sacculifer, have undergone some alteration. The C. mundulus show minor evidence for dissolution, and only some specimens show evidence of overgrowth. The Gs. sacculifer show definite signs of alteration and exhibit variable preservation, ranging from fair to poor; some specimens show minor overgrowth and internal recrystallization but retain original features such as pores, spine pits, and internal testwall growth structure, whereas in other specimens the recrystallization and overgrowth disguise many of the original features. Secondary electron and BSE-TOPO SEM images show that coccolith calcite preservation is moderate or moderate to poor. Slight to moderate etching has removed central heterococcolith features, and a small amount of secondary overgrowth is also visible. Energy dispersive spectroscopy analyses indicate that the main sedimentary components of the fine fraction sediment are biogenic CaCO3 and SiO2, with some marine barite. Based on the investigations in this data report, geochemical analyses on benthic foraminifers are unlikely to be affected by preservation, although geochemical analyses on the planktonic foraminifers should be treated cautiously because of the fair to poor and highly variable preservation

Falling Through the Net? Gender and Social Protection in the Pacific

This paper examines the gender dimensions and implications of social protection in relation to rapid transformations in the globalizing economies in the Pacific region. The paper analyzes the dynamics of gender and social protection in three countries of the region -- Papua New Guinea, Tonga and Vanuatu -- and explores how best to approach social protection so as to promote gender equality rather than risk reinscribing prevailing gender inequalities. The paper emphasizes the need to move beyond bipolar divisions of customary and commodity economies or informal and formal economies to consider the everyday realities of making a living. Women will 'fall through the net' if social protection is unduly yoked to the public sphere of the state and the formal commodity economy in which women are marginalised. Women's own perceptions of their contemporary situation and their agency as both individuals and collectivities should be carefully heeded in finding creative solutions for gender equality in social protection for sustainable Pacific futures. The paper concludes by suggestion that efforts to ensure women's social protection in the Pacific need to be alert to the risks that women might 'fall through the net.' This paper was produced for UN Women's flagship report Progress of the World's Women 2015-2016 to be released as part of the UN Women discussion paper series

The Curative Power of Play: The Voices of Therapists around the World

It is important for all therapists to be culturally sensitive to children and their eco-systems as well as to be aware of the current trends and the changing application of play as a healing agent. The focus of this study is on the development of a current description of play by therapists from a global perspective through a thematic analysis of focus groups resulting in an explanation of how play contributes to healing and the practice of therapy. In this study, the naturalistic method of qualitative research (Bowers, 2009; Lincoln & Guba, 1985) was applied to the study of play around the world, resulting in a new description of “play”. The analyses of focus group meetings in Morocco, Singapore, Hong Kong, Canada and Europe resulted in the emergence of 8 themes: productivity through play, contribution to development, facilitation of the relationship through play, honouring diversity, collaboration between children and caregivers, stimulation through technology-based play, relaxation provided by play, and the devaluation of play. These themes, which are presented through the “voices of the participants”, together with the literature review, serve to enrich the changing description of play. With participants from all continents, a current global perspective highlights the changes that play, both as a concept and as a healing agent, has undergone and will continue to do so. New information emerged suggesting that technology has become a worldwide focus for children but has a paradoxical effect on their relationships