We propose a gossip-based distributed algorithm for Gaussian mixture learning, Newscast EM. The algorithm operates on network topologies where each node observes a local quantity and can communicate with other nodes in an arbitrary point-to-point fashion. The main difference between Newscast EM and the standard EM algorithm is that the M-step in our case is implemented in a decentralized manner...

The membrane potential (Em) of normal and Plasmodium chabaudi-infected rat erythrocytes was determined from the transmembrane distributions of the lipophilic anion, thiocyanate (SCN), and cation, triphenylmethylphosphonium (TPMP). The SCN- and TPMP-measured Em of normal erythrocytes are -6.5 +/- 3 mV and -10 +/- 4 mV, respectively. The TPMP-measured Em of infected cells depended on parasite dev...

Correspondência : Marce lo Lu iz Campos V ie i ra • Rua Cardoso de Melo , 463 /21 04548 -002 – São Pau lo , SP E-mail: [email protected] Recebido em 9/10/05 • Aceito em 17/10/05 A ecocardiografi a tridimensional em tempo real permite a visibilização estrutural cardíaca a partir da composição de múltiplos planos de observação, propiciando novas informações morfológicas e funcionais1,2. Descrevem...

A well studied procedure for estimating a parameter from observed data is to maximize the likelihood function. When a maximizer cannot be obtained in closed form, iterative maximization algorithms, such as the expectation maximization (EM) maximum likelihood algorithms, are needed. The standard formulation of the EM algorithms postulates that finding a maximizer of the likelihood is complicated...

Although it is well known that nitrogen (N) additions strongly affect ectomycorrhizal (EM) fungal community composition, less is known about how different N application rates and duration of N additions affect the functional role EM fungi play in the forest N cycle.We measured EM sporocarp abundance and species richness as well as determined the δ (15)N in EM sporocarps and tree foliage in two ...

Full-scale electronic trading systems were fora long time considered to be expensive in implementation as well as operation and restricted to certain application areas, such as flight reservation and financial stock exchange. The implications of electronic commerce described by researchers were not realized intersectorally or for the whole economy. Times have changed now. Global value-added net...

Background Canada has two independent routes of emergency medicine (EM) training and certification. This unique situation may encourage medical students with EM career aspirations to apply to family medicine (FM) residencies to subsequently acquire College of Family Physicians of Canada (CFPC) training and certification in EM. We sought answers to the following: 1) Are medical students who indi...

A neutropenia em razão da mielossupressão pela infiltração maligna ou mais comumente causada por quimioterapia citotóxica continua sendo a marca da imunodeficiência em pacientes com câncer e se associa com risco consideravelmente aumentado de infecções bacterianas ou fúngicas. Além de defeitos quantitativos, os neutrófilos apresentam também diversos defeitos funcionais em relação à quimiotaxia,...

BACKGROUND Bisphenol A (BPA) is an endocrine-disrupting chemical that may contribute to development of obesity and metabolic disorders. Humans are constantly exposed to low concentrations of BPA, and studies support that the developmental period is particularly sensitive. OBJECTIVES The aim was to investigate the effects of low-dose developmental BPA exposure on metabolic parameters in male a...

O comportamento eletroquímico da vitamina E em meio hidro-alcoólico foi estudado na faixa de pH 3,1-12,1 aplicando-se as técnicas voltametria cíclica, eletrólise com potencial controlado e espectroscopias UV-Vis, IR e C RMN. Observou-se que a presença de água tem conseqüências importantes na estabilidade química das espécies geradas eletroquimicamente. Em meio hidro-alcoólico e sobre eletrodos ...