Characterisation of an aperture-stacked patch antenna for ultra-wideband wearable radio systems

This paper presents, for the first time, the time-domain characteristics of an aperture-stacked patch antenna (ASPA) for ultra-wideband (UWB) wearable devices. The methodology of antennas characterization for UWB radio systems is also outlined. The antenna operates within the 3-6 GHz frequency band. Time- and frequency-domain characteristics of this antenna are presented in transmission mode (Tx), receiving mode (Rx) and for 2-antenna (Tx-Rx) system. The pulse driving the antenna has duration of 0.65 ns. In the Tx mode, pulses radiated in different directions of the H-plane have very similar shapes. Fidelity factors are as high as 91.6-99.9%. For 2-antenna system, pulses received in normal and end-fire-like directions have the fidelity of 69.5%. As it was found, antenna does not behave "reciprocal" comparing Tx and Rx modes. For normal propagation direction, radiated pulse is the 2nd derivative of the input waveform, but in the Rx mode, received pulse is the 1st derivative of the incident plane wave. This antenna can be used for transmission of short-pulses, even 0.65-1 ns in duration. It is also small (patch planar dimensions 32/19 mm) and compact. Microstrip configuration allows further integration of active devices on the same board. Taking into account above results we can say that ASPA is a good candidate for UWB non-invasive wireless body area network (WBAN) applications

Aristóteles, Primeiros Analíticos II, 23: Não Há Indução Completa

This article examines the very atypical case of epagoge in Prior Analytics II, 23, aiming to situate it in the general framework of Aristotle’s conception of induction and in his epistemology. Besides offering a translation and a detailed commentary of the chapter, I have reassembled some of the main theories that support its character of exception – as if the philosopher were defending the existence of a “complete induction” – and then I close the article by refuting such theories, supported by other texts, such as Topics I, 8, and Posterior Analytics I, 5

Policy Considerations for Community Health Workers in an Era of Health Reform

In order to better understand how CHWs are being integrated in state health reform initiatives, including facilitating care coordination, enhancing access to community-based services, and addressing social determinants of health, the author, working in collaboration with the National Academy for State Health Policy (NASHP), developed a nation-wide scan of CHW policy activity, published online as State Community Health Worker Models in February, 2015. The CHW chart gives a comprehensive look at how states are utilizing CHWs as part of quality improvement, health care reform, and expanded models of public health

Urinary sepsis in children: a systematic review of diagnostic and therapeutic aspects

During the last decade, new imaging techniques and biological probesprovided further insight into the pathogenesis and natural history ofurinary tract infection (UTI) in children. Especially in newborns, UTIis a common cause of fever and probably the most common causeof renal parenchymal loss. In children aged equal or less than 2years, the symptoms of UTI are vague and non-specific - fever,irritability, poor feeding, vomiting, diarrhea and ill appearance. Inneonates, clinical symptoms or laboratory tests could not be usedto predict UTI episodes or eliminate the likelihood of a UTI even ifother sites of infections are clinically suggested. For this reason, thegoal of managing UTI in children is based on identifying and modifyingfactors that may increase the risk of renal parenchymal and functionalloss as from the onset of infection. Moreover, selective antimicrobialpressure is a major concern when treating children with UTI, asrenal parenchymal loss may occur within a short period of time, ifinadequate antimicrobial agents are utilized. OBJECTIVES: Thissystematic review assessed recent diagnostic and therapeuticaspects of severe UTI in children. We also summarized wellconductedstudies and the most important publications regardingdiagnosis and treatment of urinary sepsis in the pediatric population.SEARCH STRATEGY: Trials and reviews were searched in generaland specialized databases (MEDLINE, Cochrane Library) andreferences were reviewed. SELECTION CRITERIA: All publishedtrials and reviews were eligible for inclusion provided they reportedresults for the pediatric population, included clinically significantevents resulting from urinary tract infection, and included specificaspects of diagnosis and therapy. DATA COLLECTION: One reviewerextracted Information. Diagnostic and therapeutic aspects of urinarysepsis in the pediatric age group were assessed

Innovations in Rural Health System Development: Governance

This series of briefs were produced by the Maine Health Access Foundation (MeHAF) in conjunction with the Maine Rural Health Research Center to describe robust and innovative models and strategies from Maine and other parts of the country related to the areas of health finance and payment, governance, workforce, and service delivery that have the potential to be replicated or adapted here in Maine. Other briefs in this series: Moving Rural Health Systems to Value-Based Payment Recruiting and Retaining Maine\u27s Health Care Workforce Maine\u27s Behavioral Health Services Service Delivery Advances in Care Coordination Emergency Care, and Telehealth Federally Qualified Health Center Initiatives Learn more at www.mehaf.or

A robust test for monotonicity in asset returns

In this paper, we propose a robust test of monotonicity in asset returns that is valid under a general setting. We develop a test that allows for dependent data and is robust to conditional heteroskedasticity or heavy-tailed distributions of return differentials. Many postulated theories in economics and finance assume monotonic relationships between expected asset returns and certain underlying characteristics of an asset. Existing tests in literature fail to control the probability of a type 1 error or have low power under heavy-tailed distributions of return differentials. Monte Carlo simulations illustrate that our test statistic has a correct empirical size under all data-generating processes together with a similar power to other tests. Conversely, alternative tests are nonconservative under conditional heteroskedasticity or heavy-tailed distributions of return differentials. We also present an empirical application on the monotonicity of returns on various portfolios sorts that highlights the usefulness of our approach

Acometimento concomitante do intestino delgado e esôfago distal em criança com enterite necrosante maciça

Necrotizing enterocolitis is a disease of the newborn that may involve the small intestine and/or the colon, and the stomach. To our knowledge, massive necrosis of the small intestine with concomitant involvement of the esophagus has never been reported. A case of a 6-month-old boy with necrotizing enterocolitis and pan-necrosis of the small intestine, cecum, and the lower third of the esophagus is presented. After 70 days of treatment, intestinal transit was established by an anastomosis between the first centimeter of jejunum and the ascending colon. Finally, esophageal transit was established by a total gastric transposition with cervical esophagogastric anastomosis. The patient was maintained under total parenteral nutrition, and after 19 months he developed fulminant hepatic failure due to parenteral nutrition; he then underwent combined liver and small bowel transplantation. After 2 months, the patient died due to undefined neurologic complications, probably related to infection or immunosuppressive therapy.A enterite necrosante é uma doença típica do período neo-natal que pode acometer o intestino delgado, colo e/ou estômago. Até o presente, a necrose maciça do intestino delgado com o acometimento concomitante do esôfago nunca foi relatada. É apresentado o caso de um lactente com 6 meses de idade com enterite necrosante e acometimento de todo intestino delgado, ceco e terço inferior do esôfago. Após setenta dias de tratamento, o trânsito intestinal foi re-estabelecido por anastomose entre o primeiro centímetro do jejuno e o colo ascendente. Finalmente, o trânsito esofagiano foi refeito pela transposição gástrica total e anastomose esôfago-gástrica cervical. O paciente foi mantido em nutrição parenteral durante 19 meses e ao fim deste período desenvolveu falência hepática aguda, tendo sido submetido a transplante duplo de fígado e intestino delgado. Dois meses após, faleceu em decorrência de complicações neurológicas, provavelmente relacionadas à infecção ou ao tratamento imunossupressor