The paleoenvironmental change recorded in core sediments of Lake Abashiri of subarctic zone in the east part of Hokkaido, Japan

第3回極域科学シンポジウム/第34回極域生物シンポジウム 11月27日（火） 国立極地研究所 ３階ラウン

Relationship Between Mobile Device Use and Self-Regulation in Early Childhood : Examination by Internet and Nursery School Surveys

本研究の目的は，幼少期の子どものモバイル端末利用と自己制御の関連を検討することであった。研究1ではインターネット調査，研究2では保育園調査を実施した。自己制御を，気質的側面であり養育者により評定がなされるエフォートフル・コントロール（EC）と，認知的側面であり子どもへの課題の実施により測定される実行機能の2側面からとらえ，モバイル端末利用頻度や利用規則との相関係数を算出した。その結果，幼少期の子どものモバイル端末利用頻度は自己制御の低さと関連がある一方で，利用規則は自己制御の高さと関連していた。幼少期の子どものモバイル端末利用について，自己制御の観点からも長時間利用を避けることや利用規則を設けることの重要性が示唆された。The purpose of this study was to examine whether mobile device use was associated with self-regulation in early childhood.Study 1 was an internet survey and Study 2 was a nursery school survey. Self-regulation was examined in two aspects:effortful control (EC), which is a temperamental aspect and evaluated by the caregiver, and executive function, which is a cognitive aspect and measured by performing tasks on children. We calculated the correlation coefficient between mobile device use and self-regulation. In our results, the frequency of mobile device use by children in early childhood was associated with low self-regulation, while usage rules were associated with high self-regulation. In other words, it was suggested that it is important to avoid long-term use and to establish rules for mobile device use among young children from the viewpoint of self-regulation

The objective function for the estimation of the differential coefficients of the -th gene's expression levels

<p><b>Copyright information:</b></p><p>Taken from "Function approximation approach to the inference of reduced NGnet models of genetic networks"</p><p>http://www.biomedcentral.com/1471-2105/9/23</p><p>BMC Bioinformatics 2008;9():23-23.</p><p>Published online 14 Jan 2008</p><p>PMCID:PMC2258286.</p><p></p