インターネット調査の新潮流 : スマホユーザーの増加とその活用可能性〔論文〕

近年，スマートフォンの普及により，インターネット調査を取り巻く環境は急速に変化している．しかし，スマートフォンの回答端末としての特徴や，スマートフォン回答者を含むリサーチパネルの特性については，これまで明らかとなっていない．１つ目の検証調査では，画面サイズの大きさに起因して，スマートフォンでの回答データに影響する可能性があること，回答形式の工夫を行うことによって，パソコンとスマートフォンの回答差異を解消できることが示された．2 つ目の検証調査では，スマートフォンの回答者を多く含む抽出フレームの方が，公的統計（就業構造基本調査）に近い属性を持つことが示された．これらの結果から，スマートフォンユーザーを活用することにより，インターネット調査を世論調査に活用できる可能性が示唆される． The environment of online surveys is changing rapidly due to an increase of smartphone users. However, features of the smartphone as a questionnaire response terminal device and the characteristics of research panels, including smartphone users, have not been studied. Results from the first study indicated that the screen size of smartphones affected the answer data, and improving the questionnaire design could eliminate this effect. The second study indicated that a research panel, including smartphone users, has similar characteristics to Employment Status Survey in official statistics. These two results suggest the possibility of using online surveys for public opinion polls.１．はじめに ２．【検証調査1】PC とスマホの回答デバイスによる差異 ３．【検証調査2】スマホ回答者の特性 ４．まとめと今後の課題textapplication/pdfdepartmental bulletin pape

Sustainable Constant Consumption in a Semi-open Economy with Exhaustible Resources

To sustain constant consumption, Hartwick’s rule prescribes reinvesting all resource rents in reproducible capital. However, Hartwick’s rule is not necessarily the result of optimization. In this paper, we address this insufficiency by deriving a constant consumption path endogenously in a semi-open economy with an exhaustible resource, which has full access to world goods and capital markets, while the resource flows are not internationally tradable. Our findings show that, due to the essentiality of both capital and resource to the production process, the economy transforms its domestic assets into foreign ones, ending up consuming a constant interest flow from the latter.The official English language publication of the Japanese Economic Associationjournal articl

Relationship between expression of gratitude by home-based care receivers and caregiver burden among family caregivers

application/pdfArchives of Gerontology and Geriatrics. 2021, 97journal articl

A Research on Cooperative Problem Solving Learning in Mathematics Education : Aspects of Analysis about Representation in Constructive interaction

departmental bulletin pape

Upper Bound on the Decay τ→μγ from the Belle Detector

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ON RECURRENT SPACES OF SECOND ORDER IN FINSLER SPACES

application/pdfChaki and Roychowdhary have studied the Ricci recurrent spaces of second order in the Riemannian Geometry ＄[＄1＄]＄ . The object of present paper is to define the recurrent curvature tensor fields of second order and to study the properties of recurrence tensor field and the curvature tensor fields in the Finsler spaces.departmental bulletin pape