Nonrenormalization of Flux Superpotentials in String Theory

Recent progress in understanding modulus stabilization in string theory relies on the existence of a non-renormalization theorem for the 4D compactifications of Type IIB supergravity which preserve N=1 supersymmetry. We provide a simple proof of this non-renormalization theorem for a broad class of Type IIB vacua using the known symmetries of these compactifications, thereby putting them on a similar footing as the better-known non-renormalization theorems of heterotic vacua without fluxes. The explicit dependence of the tree-level flux superpotential on the dilaton field makes the proof more subtle than in the absence of fluxes.Comment: 16 pages, no figures. Final version, to appear in JHEP. Arguments for validity of R-symmetry made more explicit. Minor extra comments and references adde

タンパク質キナーゼAurora-B の新規基質であるSAKI の機能解析研究

博甲第25号生命システム科学博士県立広島大

A practical review of energy saving technology for ageing populations

Fuel poverty is a critical issue for a globally ageing population. Longer heating/cooling requirements combine with declining incomes to create a problem in need of urgent attention. One solution is to deploy technology to help elderly users feel informed about their energy use, and empowered to take steps to make it more cost effective and efficient. This study subjects a broad cross section of energy monitoring and home automation products to a formal ergonomic analysis. A high level task analysis was used to guide a product walk through, and a toolkit approach was used thereafter to drive out further insights. The findings reveal a number of serious usability issues which prevent these products from successfully accessing an important target demographic and associated energy saving and fuel poverty outcomes. Design principles and examples are distilled from the research to enable practitioners to translate the underlying research into high quality design-engineering solutions

Uplifting and Inflation with D3 Branes

Back-reaction effects can modify the dynamics of mobile D3 branes moving within type IIB vacua, in a way which has recently become calculable. We identify some of the ways these effects can alter inflationary scenarios, with the following three results: (1) By examining how the forces on the brane due to moduli-stabilizing interactions modify the angular motion of D3 branes moving in Klebanov-Strassler type throats, we show how previous slow-roll analyses can remain unchanged for some brane trajectories, while being modified for other trajectories. These forces cause the D3 brane to sink to the bottom of the throat except in a narrow region close to the D7 brane, and do not ameliorate the \eta-problem of slow roll inflation in these throats; (2) We argue that a recently-proposed back-reaction on the dilaton field can be used to provide an alternative way of uplifting these compactifications to Minkowski or De Sitter vacua, without the need for a supersymmetry-breaking anti-D3 brane; and (3) by including also the D-term forces which arise when supersymmetry-breaking fluxes are included on D7 branes we identify the 4D supergravity interactions which capture the dynamics of D3 motion in D3/D7 inflationary scenarios. The form of these potentials sheds some light on recent discussions of how symmetries constrain D term interactions in the low-energy theory.Comment: JHEP.cls, 35 pages, 3 .eps figure

Does Choose & Book fail to deliver the expected choice to patients? A survey of patients' experience of outpatient appointment booking

Provisional abstract: Background: Choose and Book is a central part of the UK Government patient choice agenda that seeks to provide patients with a choice over the time, date and place of their first outpatient appointment. This is done through the use of a computerised booking system. After a 2004 pilot study, Choose and Book was formally launched in January 2006. This is the first study of patient experience of Choose and Book since then. Methods: A questionnaire survey of reported experience of choice over the time, data and place of appointment, carried out in a National Health Service hospital in London. 104 patients at their first outpatient appointment completed the questionnaire, consisting of a consecutive series of patients referred through Choose and Book and a sample referred through the conventional booking system. Results: Among the Choose and Book patients, 66% (31/47; 95% CI 52 to 78%) reported not being given a choice of appointment date, 66% (31/47; 95% CI 52 to 78%) reported not being given a choice of appointment time, 86% (37/43; 95% CI 74 to 94%) reported being given a choice of fewer than four hospitals in total and 32% (15/47; 95% CI 20 to 46%) reported not being given any choice of hospital. Conclusions: In this study, patients did not experience the degree of choice that Choose and Book was designed to deliver

企業情報システムにおけるクラウドコンピューティングの衝撃：クラウドコンピューティングへと向かう企業情報システムの歴史的検証

１．はじめに ２．クラウドコンピューティングとは ３．クラウドコンピューティングへと向かう企業情報システムの歴史的検証 ４．企業情報システムの所有から利用へ ５．原点回帰する企業情報システム ６．おわり

安静時エネルギー消費量の測定に影響を及ぼす要因の検証

本研究の目的は、健康な女子大学生を対象に、特定の因子が空腹時の安静時エネルギー消費量にどの程度影響するかを検討した。特定の因子として、測定中の睡眠の影響、測定前日の夕食の食事内容の違い、前日の食事からの絶食時間の違いを検討した。その結果、1)睡眠時のエネルギー消費量は覚醒時と比較して14%低値であった。2)前日の夕食が、全員統一の決められた食事か、各自で自由に摂取した食事かの違いで、安静時エネルギー消費量に影響するとは言えない。3)前日の食事を自由に摂取した場合でも、前の夕食から13時間以上経過していれば、食事の影響が少ないエネルギー消費量値が得られる。また、脈拍の増加はエネルギー消費量に影響を与えることから、安静状態における代謝の測定時は、脈拍をモニターし安静状態であるか確認する必要がある。"The purpose of this study varidate some factors which influence to the resting energy expenditure in healthy volunteers. At some factors, we measured the difference of meal contents of the day before and fasting time. In addition, we measured the difference between sleeping time and awaking time on energy expenditure. As a result, 1) Sleeping energy expenditure was 14% lower than awaking time. 2) We could measure energy expenditure with a little influence of a meal, if it pasted 13hours fasting time. 3) It was known that energy expenditure increase according to pulse increase. For measurement of resting energy expenditure which is near to basal energy expenditure, we needed to monitor the pulse and to confirm resting condition. For more correct measure of energy expenditure, we took rest time more than 90 minutes for exclude exercise influence."原著Original国立情報学研究所で電子