Frecvenţa alimentaţiei la adolescenţii din mediile urban şi rural
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MAXIMENCO, Elena. Frecvenţa alimentaţiei la adolescenţii din mediile urban şi rural. In: Sănătate Publică, Economie şi Management în Medicină . 2008, nr. 5(26), pp. 91-94. ISSN 1729-8687.
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Sănătate Publică, Economie şi Management în Medicină
Numărul 5(26) / 2008 / ISSN 1729-8687

Frecvenţa alimentaţiei la adolescenţii din mediile urban şi rural

Pag. 91-94

Maximenco Elena
 
Centrul Naţional Ştiinţifico-Practic de Medicină Preventivă
 
Disponibil în IBN: 13 mai 2014


Rezumat

The study included 553 pupils of seventh year of studies (Edinet rayon – 130, Orhei rayon – 222, Cahul rayon – 201) from 15 schools, selected through a voting procedure: 6 – from urban areas and 9 – from rural areas. A self-administered questionnaire has been used to assess general data and frequency of alimentation (breakfast, dinner, and supper) during working days and weekend. Study results demonstrated that: 1. Approximately 1/3 of respondents from urban and rural areas do not have daily breakfast and 1/4 of respondents do not have daily dinner and supper during working days; 2. Respondents have meals more frequently during weekend, and approximately 3/4 have daily breakfast, dinner, and supper; 3. Respondents from urban areas more frequently have daily dinner during working days as compared to those from rural areas. On weekends, respondents from urban areas have daily dinner and supper more frequently as compared to breakfast; 4. Girls from Cahul rayon have daily supper more frequently during working days as compared to boys from the same rayon and girls from Orhei rayon.

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<creatorName>Dragoman, M.</creatorName>
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<creatorName>Tighineanu, I.M.</creatorName>
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<creatorName>Dragoman, D.</creatorName>
<affiliation>Universitatea din Bucureşti, România</affiliation>
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<affiliation>Institutul Naţional de Cercetare Dezvoltare pentru Microtehnologie, România</affiliation>
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<creator>
<creatorName>Branişte, T.</creatorName>
<affiliation>Universitatea Tehnică a Moldovei, Moldova, Republica</affiliation>
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<creatorName>Ciobanu, V.N.</creatorName>
<affiliation>Universitatea Tehnică a Moldovei, Moldova, Republica</affiliation>
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<title xml:lang='en'><p>Learning mechanisms in memristor networks based on GaN nanomembranes</p></title>
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<publisher>Instrumentul Bibliometric National</publisher>
<publicationYear>2018</publicationYear>
<relatedIdentifier relatedIdentifierType='ISSN' relationType='IsPartOf'>0021-8979</relatedIdentifier>
<subjects>
<subject>III-V semiconductors</subject>
<subject>Memristors</subject>
<subject>nanostructures</subject>
<subject>Artificial learning</subject>
<subject>Associative learning</subject>
<subject>Electrical stimuli</subject>
<subject>Learning mechanism</subject>
<subject>Negative steps</subject>
<subject>Simple networks</subject>
<subject>Single-crystalline</subject>
<subject>Temporal response</subject>
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<date dateType='Issued'>2018-10-21</date>
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<description xml:lang='en' descriptionType='Abstract'><p>We demonstrate experimentally that single crystalline GaN nanomembranes arranged in simple networks exhibit learning mechanisms such as habituation and dishabituation followed by storage of the response to a certain electrical stimulus. These artificial learning mechanisms are analogous to non-associative learning processes which are identical in simple animals and human beings. We found that the learning time depends on the number of GaN membranes in parallel, and this parameter decreases by 30% when three memristors are connected in parallel compared to the learning time of a single memristor. Moreover, an increased number of parallel memristors reduces the eventual asymmetry in the temporal response of the circuit at positive and negative step voltages.</p></description>
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