An Efficient Detector for Gamma Radiation

departmental bulletin pape

スラップ訴訟と言論の自由 : 名誉毀損損害賠償裁判を利用する言論抑圧の問題性

departmental bulletin pape

Anode Effect of Halogen Counters

departmental bulletin pape

Determination of Radioactivity of Mixed Samples by Analysis of Gamma Ray Spectra

departmental bulletin pape

Maintenance Management of Multispan Masonry Arch Bridges by Reliability Concept

This paper presents a maintenance strategy of multispan masonry arch bridges by reliability concept. Based on axle load of the individual arches, a safety margin (limit state function) is introduced. Then, failure probabilities of each arch are estimated. Since failure of any arch makes the bridge failure, the bridge is treated as a series system with individual arches. Then, failure probabilities of arches are assembled to obtain failure probability of the bridge by Ditlevsen’s bounds. Acceptable reliability indices of masonry arch bridges are introduced using Nordic Committee of Building Regulation. From the reliability index variation with time, major maintenance of the bridge is predicted. The introduced maintenance strategy is illustrated with an old multispan brick masonry arch bridge from Sri Lanka.conference pape

アメリカ中小企業と日本中小企業の比較研究

Articledepartmental bulletin pape

The Price of Silence: Media Competition, Capture, and Electoral Accountability

Is competition in the mass media market an effective deterrent against media capture? Does it prevent political groups from influencing reporting? This paper shows that in some cases it does not. Building on the literature on media capture, the model highlights that, under fairly generic assumptions, high competition in the media market can drive the cost of media capture to zero, making capture easier. Moreover, it highlights conditions on the parameters where the effect of competition on capture is non-monotonic, i.e. capture may occur for levels of competition lower, but also higher, than those leading to media freedom

Does democracy cause growth? A meta-analysis perspective

The relationship between democracy and economic growth has long been investigated both in the political science and in the economic literature with inconclusive outcomes. By adopting a multi-level meta-analysis framework, we tried to shed lights on this conundrum. Our hierarchical sample includes 103 studies containing 942 point-estimates. Our random effects model suggests that the sign of this relationship, albeit positive, is statistically weak. We then address the high between-studies heterogeneity by adopting meta-regression analysis models. Results are striking: the effect sizes\u2019 variance is largely driven by spatial and temporal differences in the samples, indicating that the democracy and growth nexus is not homogeneous across world regions and time periods. Conversely, the large number of control variables included in the papers, do not impact the reported results. At the same time, models estimated by means of the within estimator have a significant, albeit negative, impact on economic growth. This seems to suggest that scholars have not yet found the appropriate control variables - or their suitable proxies - to explain such widely debated relationship

Does democracy cause growth? A meta-analysis (of 2000 regressions)

The relationship between democracy and economic growth has been widely debated in the social sciences with contrasting results. We apply a meta-analytical framework surveying 188 studies (2047 models) covering 36 years of research in the field. We also compare the effect of democracy on growth with the effect of human capital on growth in a sub-sample of 111 studies (875 models). Our findings suggest that democracy has a positive and direct effect on economic growth beyond the reach of publication bias, albeit weaker (about one third) of that of human capital. Further, the growth effect of democracy appears to be stronger in more recent papers not surveyed in Doucouliagos and Uluba\u15fo\u11flu (2008). Finally, we show that the heterogeneity in the reported results is mainly driven by spatial and temporal differences in the samples, indicating that the democracy and growth nexus is not homogeneous across world regions and decades

The Pros and Cons Concerning Capital-Account Convertibilit

application/pdf1.資本自由化をめぐる論争　1.1."Should the IMF Pursue Capital-Account Convertibility?　1. 2. 資本自由化の論拠　1. 3. 私的所有権　1. 4. 裁量権　2. 資本自由化は望ましいか?　2.1. 「貯蓄の効率的配分」vs. 「群集心理」　2. 2. 健全な政策と金融システムの強化　2.3. 金融と投機　3. 国際資本移動の規制は可能か?departmental bulletin pape