In this article we introduce a continuous time implementation of adaptive resonance theory (ART). ART designed by Grossberg concerns neural networks that self-organize stable pattern recognition categories of arbitrary sequences of input patterns. In contrast to the current implementations of ART we introduce a complete implementation of an ART network, including all regulatory and logical functions, as a system of ordinary differential equations capable of stand-alone running in real time. This means that transient behavior is kept in tact. This implementation of ART is based on ART 2 and is called Exact ART. Exact ART includes an implementation of a gated dipole field and an implementation of the orienting sub-system. The most important features of Exact ART, which are the design principles of ART 2, are proven mathematically. Also simulation studies show that Exact ART self-organizes stable recognition codes that agree with the classification behavior of ART 2. Copyright 1997 Elsevier Science Ltd.
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http://dx.doi.org/10.1016/s0893-6080(96)00111-6 | DOI Listing |
Viruses
December 2024
Department of Life and Consumer Sciences, College of Agriculture and Environmental Sciences, Florida Campus, Roodepoort 1709, South Africa.
Pregnant women living with HIV (PWLWHIV) are at an increased risk of developing obstetrics complications such as pre-eclampsia (PE). Antiretroviral therapy (ART) remains the standard treatment for PWLWHIV and non-pregnant women. However, its use has been associated with adverse liver conditions, particularly hepatotoxicity, often marked by elevated liver enzymes (LEEs) as demonstrated by an increased aspartate transferase (AST), alanine transaminase (ALT), and alkaline phosphatase (ALP) in PWLWHIV on ART.
View Article and Find Full Text PDF: Vertical atrophy of the maxilla has traditionally been treated with sinus lift procedures and implant placement, performed in one or two surgical stages. Subsequently, the transcrestal sinus lift technique was introduced, offering distinct advantages in terms of indications and reduced morbidity. Most recently, short implants have emerged as a valid alternative to these procedures, even in cases of severe horizontal resorption, allowing for direct placement in many cases.
View Article and Find Full Text PDFAm J Geriatr Psychiatry
January 2025
McLean Hospital (IVV), Belmont, MA; Department of Psychiatry (IVV), Harvard Medical School, Boston, MA. Electronic address:
Cogn Sci
January 2025
Program in Cognitive Science and Department of Philosophy, Yale University.
People tend to show greater liking for expressions of sadness when these expressions are described as art. Why does this effect arise? One obvious hypothesis would be that describing something as art makes people more likely to regard it as fictional, and people prefer expressions of sadness that are not real. We contrast this obvious hypothesis with a hypothesis derived from the philosophical literature.
View Article and Find Full Text PDFWHO's 2013 PMTCT guidelines recommended lifelong antiretroviral therapy (ART) for HIV-infected pregnant and breastfeeding women, exclusive breastfeeding (EBF), nevirapine prophylaxis (NVP) and early infant diagnosis (EID) for HIV-exposed-breastfed infants. We examined the association between knowledge and adherence to these guidelines among 550 HIV-infected pregnant women in Maharashtra, India. Knowledge of PMTCT guidelines was assessed using a structured-questionnaire during enrollment.
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