Lead soaps in paintings: Friends or foes?

The origin(s) and role(s) of metal soaps in paints are a worldwide concern today. These hybrid compounds, containing both fatty acid chains and metals associated with a carboxylate function, are increasingly identified in paints. As reviewed in the first part of this work, the presence of metal soaps in paints is differently interpreted in scientific publications: metal soaps are sometimes considered to play a positive role as anchor points, during paint drying processes; they can also be considered as responsible for many degradation processes (protrusions, efflorescences, darkening, etc.). Their origins are also interpreted in various ways. In some paintings (in particular from the twentieth century), they have sometimes introduced on purpose, as additives, to modify the physical properties of the painting materials. In older paintings, metal soaps are usually thought to result from an uncontrolled reaction of oil with lead-based pigments, in particular lead white, red lead, and lead tin yellow. In the second part of this work, the review of historical recipes of lead-based paint shows an important number of recipes based on controlled mixing of oil with lead driers. In the third part, the experimental reproduction of such traditional recipes using walnut oil and litharge (PbO) shows that lead soaps can be formed, both in about one hour at ～100°C, or in about one month at room temperature. It shows as well that after a few years, litharge is no longer detected in the paint medium, while different lead carbonates are. Finally, the micro-infrared spectroscopy and micro-X-ray diffraction re-analysis of protrusions from a nine-year model painting shows together with lead soaps, the presence of Pb₅(CO₃)₃(OH)₂O (‘synthetic plumbonacrite’), an unusual phase recently observed in a protrusion from a painting by Vincent Van Gogh. This work highlights (i) the multiple origins and roles of metal soaps in paints and (ii) the importance of combining the analysis of fragments from historical paintings with the analysis and reproduction of historical recipes. In particular, we show that the components detected today in historical paintings may severely differ from those originally used or prepared by the painter, complicating the assessment of the painter's intentions. More than the presence of metal soaps, the key questions to be tackled should be about their origins and (re)mobilization.     

Hopes and challenges for progressive educators in Japan: assessment of the ‘progressive turn’ in the 2002 educational reform

A variety of perspectives exist on the evaluation of Japan’s educational reform of 2002, which has evolved since the 1980s. However, thus far, little attention has been paid to the emerging influence of civil society on educational policies and practices. This paper shows that the origin of the current educational reforms can be traced to reports prepared by various neo‐liberal/conservative business leaders and politicians. Further, it shows their privatization and decentralization principles happen to coincide with the increasing interest of progressive citizens’ groups and educators. Their impact on the Japanese education system remains latent, especially as more scepticism grows towards progressivism as a philosophy behind the current educational reform. However, the expanding civil society and new progressive education movements in Japan are trends worth exploring in the context of globalization at the grass‐roots level.     

Culture change in organizational public discourse 1998–2008: Examining annual reports of Japanese and US corporations

This study examines changes in organizational cultures of Japanese and US corporations between 1998 and 2008 through the lens of communication. Specifically, it analyzes organizational values that are manifest in the use of specific terms in the texts of corporate annual reports (N = 255). By doing so, this study empirically determines the patterns that describe over-time changes in organizational cultures of Japanese and US corporations. Theoretically, this study investigates whether the basic premise of the theory of convergence is applicable to the study of organizational culture change. To that end, three dimensions of organizational values—performance, continuity, and growth—have been derived. To test the hypotheses and the research question offered, this study examines the effects of time in years, national culture, and the interaction between the two on the three value dimensions. Using linear growth model analysis, this study found that time and national culture had significant effects on the use of the terms related to the performance and continuity dimensions. The effects were not significant for the growth dimension. In none of the cases, the interaction effects between time and national culture were significant. The results provided evidence to support the parallel change pattern for the performance and continuity dimensions and the unitary stability pattern for the growth dimension. The findings partially support the premise of the theory of convergence.     

Rain influences the physiological and metabolic responses to exercise in hot conditions

Outdoor exercise often proceeds in rainy conditions. However, the cooling effects of rain on human physiological responses have not been systematically studied in hot conditions. The present study determined physiological and metabolic responses using a climatic chamber that can precisely simulate hot, rainy conditions. Eleven healthy men ran on a treadmill at an intensity of 70% VO_2max for 30 min in the climatic chamber at an ambient temperature of 33°C in the presence (RAIN) or absence (CON) of 30 mm · h^?1 of precipitation and a headwind equal to the running velocity of 3.15 ± 0.19 m · s^?1. Oesophageal temperature, mean skin temperature, heart rate, rating of perceived exertion, blood parameters, volume of expired air and sweat loss were measured. Oesophageal and mean skin temperatures were significantly lower from 5 to 30 min, and heart rate was significantly lower from 20 to 30 min in RAIN than in CON (P < 0.05 for all). Plasma lactate and epinephrine concentrations (30 min) and sweat loss were significantly lower (P < 0.05) in RAIN compared with CON. Rain appears to influence physiological and metabolic responses to exercise in heat such that heat-induced strain might be reduced.     

日本兵法经营思想史研究

世界上最初实施兵法经营的是中国的白圭,而最早具体推行兵法经营的国家是日本。江户时代的北条氏长认为商人可以掌握兵法,此时代商家思想的代表“石门心学”引用《孙子兵法》解说商务活动,同时,兵法经营也受到一些批评;三井财团的创始人三井高利是在商务中运用兵法的先驱;二战后大桥武夫提出将兵法用于经营的设想并在日本普及且确立其体系。身份制度和缓、教育水平高及多神观念的民族性是兵法经营产生于日本的3个原因。     

E-learning courseware for language education in Japan: its application and student perceptions

Abstract

Commercial e-learning courseware for English education has been widely used in Japanese universities as an effective tool to assist students in improving their overall English skills. The courseware that is described in this paper is believed to be useful for teachers to assess students’ progress and evaluate their dedication to English study. Despite the fact that various remarkable technical features have been discussed, not much research has been done to investigate student evaluation of courseware. This paper outlines a study carried out to investigate how Japanese undergraduate students rate commercial online courseware for their English study and what the relationship is between their appreciation of courseware and their educational background. The findings suggest that although different students exhibit different preferences there is a close relationship between the benefits of courseware and their previous language-learning experiences.     

Co‐evolution of mobile language learning: Going global with games consoles in higher education

Game consoles have been adopted as a learning platform in school education. However, there is a scarcity of studies examining the utility of games consoles with built‐in WiFi as affordable learning platforms in universities. This paper contributes to knowledge about the capacity of the Nintendo DSi to create new learning spaces mediated and supported by DSi consoles, free Flipnote Studio software for DS and a dedicated course website. An application of the DSi is described for remote supplemental language tutorial activities linking a dispersed body of students on a year‐abroad programme. It was found that the use of DSi as a mobile learning platform has great potential if it is used in combination with shared webspace, such as Hatena, by increasing students' learning motivation and eliminating fears/uncertainty about their progress.     

Educational reform in Japan

Director General of the Japan Scholarship Foundation. Former Director General of the National INstutute for Educational Research (1985–89). Author of numerous publications on public education and education legislation.