We propose and analyze a class of integrated social and quality of service (QoS) trustbased routing protocols in mobile ad-hoc delay tolerant networks. The underlying idea is to incorporate trust evaluation in the routing protocol, considering not only QoS trust properties but also social trust properties to evaluate other nodes encountered. We prove that our protocol is resilient against bad-m...

This paper presents performance characteristics of the CM-5 data network with respect to bandwidth and latency. We present the maximum eeective network bandwidth as a function of (1) message size, (2) varying data path through diierent levels of the network hierarchy, and (3) system load. We also present latency as a function of message size and network hierarchy. In the second part of our eval...

This paper presents the design and evaluation of the M-cache, a small, fast and intelligent memory for handling messages at the processing nodes of multicomputer systems. The M-cache is neither a conventional cache nor a message bu er, though it has some characteristics of both. It provides hardware support for the message search operation often performed in message-directed programming, a prog...

This paper extends the modeling and analysis of packet switched multistage cube intercoimection networks to include the use of multiple-packet message formats. A multiplepacket message format is needed within an interconnection network when the message to be transmitted exceeds the network's packet size. The packet offset time is introduced and used to gauge the transmission rate differential b...

UNLABELLED The perspectives of adolescents were solicited on the issue of sexual and reproductive health messages they received through dancehall music as well as their perceptions of parents' views of such messages and adolescents' indulgence with this genre of music. METHODS This sequential mixed methods study was completed in 2008. The study's qualitative component was summarized as the no...

BACKGROUND An estimated 12 million sexually transmitted infections (STIs) are documented in Brazil per year. Given the scope of this public health challenge and the importance of prompt treatment and follow-up counseling to reduce future STI/HIV-related risk behavior, we sought to qualitatively explore STI clinic experiences among individuals diagnosed with STIs via public clinics in Rio de Jan...

OBJECTIVES We pretested interventions derived from different domains of behavior change theory to determine their effectiveness at increasing hand washing with soap in a natural setting. METHODS We installed wireless devices in highway service station restrooms to record entry and soap use. Two text-only messages for each of 7 psychological domains were compared for their effect on soap-use r...

Did smiling evolve as an expression of happiness, friendliness, or both? Naturalistic observation at a bowling alley (N — 1,793 balls) shows that bowlers often smile when socially engaged, looking at and talking to others, but not necessarily after scoring a spare or a strike. In a second study, bowlers (N =166 balls) rarely smiled while facing the pins but often smiled when facing their friend...

Latino gay men face multiple barriers to human immunodeficiency virus (HIV) prevention, in particular a lack of intervention programs that integrate prevention messages with cultural norms and address issues of social marginalization from multiple communities (gay community and Latino community), homophobia and racism. In order to address these specific issues, a multilayered HIV intervention w...

BACKGROUND In France, advance directives are favourably perceived by most of the population, although the drafting rate is low. This ambivalence is challenging because advance directives are meant to promote the autonomy and freedom of choice of patients. The purpose of this study was to analyse the content of advance directives written by patients suffering from malignant haemopathies to bette...