<教育デザインフォーラム学生発表会>大学生の不登校に繋がる登校回避感情が生じる要因についての検討(ポスター発表の要旨)

departmental bulletin pape

エネルギースペクトルが直読可能な2重計数管方式中性子スペクトロメーターの研究開発

およそ10keVから1MeVの中性子エネルギ-範囲に亙って、アンフォールディングの必要がなく、パルス波高分布から中性子エネルギースペクトルを直読することが可能な、2重計数管方式全エネルギー吸収型中性子スペクトロメーターの研究開発を実施した。 1.高い中性子検出効率を得るため、3気圧のプロパンガスを充填した大容積(約5リットル)の中空円筒型多線陽極構造の反跳陽子比例計数管を設計・製作し、この内側に市販の高圧力^3He中性子捕獲計数管を同軸で組み込んだ。反跳陽子計数管のエネルギー分解能は、プロパンガスにエネルギー校正用として混入した^3Heの熱中性子捕獲に伴いパルス波高分布上に生じた764keVの吸収ピークに対して23%が得られ、また、中性子信号とγ線信号との間でパルス立上り時間の違いを利用した波形弁別を行った結果、^Coγ線に対し95%のγ線除去率を達成できた。 2.反跳陽子計数管に入射し、プロパン中の水素による弾性散乱で大きくエネルギーを失った中性子が内側の^3He計数管で捕獲され、2重パルスを発生したとき、後続信号で先行の反跳陽子信号の波高分析を実施するよう、遅延同時計数処理を行うためのロジック信号処理装置を設計・製作すると共に、エレクトロニクス系を構築した。 3.スペクトロメーターに80から600keVの種々のエネルギ-の単色中性子を照射すると、モンテカルロ計算により求められたエネルギー応答関数と同様に、各中性子エネルギーで波高分布上に中性子の全エネルギー吸収に対応した単一ピークが得られ、これより、ピーク波高値と中性子エネルギーとの関係(エネルギー校正曲線)が求められた。中性子検出効率はモンテカルロ計算結果と同程度(10^程度)の値が得られ、モンテカルロ計算の信頼性を確認した。科学研究費補助金 研究種目:一般研究(C) 課題番号:04680228 研究代表者:青山 隆彦 研究期間:1992-1993年度research repor

放射性廃棄物の長期管理施設の立地調査受容における感情，手続き的公正，信頼が及ぼす影響

Disposal of designated waste that is radioactive contaminated by the Fukushima nuclear accident is a primary issue in Japan. This study examined the determinants of public acceptance of siting a repository for designated waste, focusing on affective reaction, procedural fairness, and trust. The study presumed that affective reaction moderates the effects of procedural fairness and trust on public acceptance. To examine the presumption, the study implemented a hypothetical scenario experiment that manipulated two factors: an opportunity of voice as an antecedent of procedural fairness and similarity value to the authority as a component of trust. 289 people participated in the web-based experiment. Participants were randomly assigned to one of four conditions: procedural fairness (voice vs. no voice) × trust (similarity vs. no similarity) factorial design associated with acceptance of siting investigation for designated waste. The experiment measured affective reaction to the siting, and evaluations of procedural fairness, trust, public acceptance in the decision-making process. Results indicated that affective reaction, procedural fairness, and trust determined public acceptance. Moreover, the interactive effect of affective reaction × trust was found. A process analysis indicated that the effect of trust on public acceptance was strengthened when the affective reaction was negative. However, the interactive effects of affective reaction × procedural fairness and trust × procedural fairness were not found. The study showed that trust was susceptible to affect. This study suggested the significance of trust for people with a strong affective reaction in promoting the public acceptance of siting a facility for designated waste.本研究は文部科学省科学研究費基盤B（課題番号：16H03011，研究代表者：広瀬幸雄）の補助を受けて実施された．departmental bulletin pape

賛否二分法を越えた折衷案の受容とその規定因としての手続き的公正 : ノイス市におけるトラムの事例調査

This study investigated the effects of value similarity and procedural fairness of citizen participation on public acceptance of environmental policy decision in a case study of the tram system in Neuss city, Germany. We carried out a case study investigating the tram system in the city center of Neuss. In Neuss, the street in the city center was too narrow and dangerous because the trams went through the main street. There was a big controversial debate of whether the tram should remain or be removed from there. After a decade of discussion, the city mayor had decided the tram line to become a single track from double track on the section of the city center. To investigate how residents evaluate the decision process and to explore what factors influence people's acceptance of the decision, a mail-out survey was conducted in Neuss. We differentiated the acceptance of single track, which is a compromised resolution reflected both opinions, from approval of remain/remove the tram system, which is a dichotomy. Results showed that a) when the acceptance was a dependent variable, both value similarity and procedural fairness had effects on the acceptance, while b) when approval was a dependent variable, value similarity had a stronger effect, but procedural fairness had a weaker effect. These results indicated that discussion framework focusing on the controversy as dichotomy might blindfold many values, on the contrary, the compromise between both sides might turn their attention to diverse values causing evaluation of procedural fairness to become more significant.本研究はJSPS科研費20402051（代表広瀬幸雄）の助成を受けた．departmental bulletin pape

高レベル放射性廃棄物の管理方策の選択に関する意思決定プロセス : スイスと英国を例として

The purpose of our study is to understand decision-making process on selection of management policy for high-level radioactive waste. We compared decision-making process between Switzerland and UK by document review. The resuls show that decision-making process in both Swizerland and UK have similar features on flow of decision-making, comparative criteria for selecting options of management policy, and trade-off regarding intergenerational faireness, except for manner of public participation. The decision-making was performed extraction of options, establishment of comparative criteria, assessment and selection of options in turn. As comparative criteria, safety and intergenerational faireness etc. were considered to be important. The position of 'Deal with it now by waste disposal' emphasizing the responsibility of the present generation had a trade-off relation with that of 'Leave it until later by long-term storage' emphasizing the rights of future generations. The sense of values, recusing HLW repository as so-called troublesome facility agaist future and present generation, appeared to be mitigated through the consideration of trade-off relation described above. As a result, both coutries have chosen geological disposal considering reversibility of decisions and retrievability of radioactive waste.本研究は文部科学省科学研究費基盤B（課題番号16H03011，研究代表者 広瀬幸雄）の補助を受けて実施された．departmental bulletin pape

親から子への環境配慮の規範・行動の伝播の縦断的研究

The aim of our study is to confirm that children's environmental personal norms were formed by injunctive norms of close others. We conducted a longitudinal survey with one-year interval for 5th and 6th grade elementary school children and their parents/caregivers. The results of the study revealed that children's personal norms were formed by injunctive norms of their parents, and that parents' environmental - conscious behaviors affected children's descriptive norms at the same time point. Parents' attention/praise affected children's injunctive norms at the next year. The study also showed that the influence from their parents were larger than that of their peers.departmental bulletin pape

市民参加による熟議経験の効果と今後の参加意図の規定因としてのエンパワーメント : プランニングセルの参加経験者と未経験者の比較

This study explored whether citizen participation empowers people, and examined the effect of empowerment expectation on intention to participate in future citizen participation programs. We also focused on three subscales of competence: deepening participants' understanding of discussion themes, enabling mutual understanding among participants, and performance appraisal of citizen's panel conference; and examined their relationships with measures of empowerment. We explored the "Citizen's Report for Health" program, conducted from 2003 to 2004 in eight regions of Bavaria, Germany. They used the "Planning Cells" citizen participation and deliberation model, involving randomly selected citizens. Fifty residents from each region (n=405) attended a four-day meeting and discussed the suggestions for future health policies. A questionnaire survey was administered to 405 participants and 3500 non-participants (500 residents randomly selected from each of the seven regions) in early 2007. The main results were as follows: 1) participants revealed higher scores than non-participants regarding participation intention in a future opportunity, each subscale of competence, and, each subscale of empowerment, 2) both participants and non-participants determined the intention to participate in future participation programs by the empowerment expected to be gained. 3) Competence was the main determinant of each empowerment. We discussed the necessity to encourage people with no experience of citizen participation to foster greater expectations of empowerment to promote their participation.本研究は文部科学省科学研究費補助金基盤研究 (B) 海外（課題番号：17402035，研究代表者：広瀬幸雄）の補助を受けて実施された．departmental bulletin pape

Excitation Intensity Dependence of Photoluminescence on InAs/GaSb Superlattice with Constant Ratio of Layer Thickness

Excitation intensity dependence of photoluminescence (PL) in InAs/GaSb superlattice with a constant layer thickness ratio was investigated in order to understand the emission transition properties of related devices. The band diagram calculated by k・p perturbation method was compared with experimented results . In InAs/GaSb:2.8/4.5 superlattice, when the excitation intensity increased, the PL peak energy also increased. The measured PL emission spectrum and the calculated peak energy were in good agreement. The emission could be identified as between the first order miniband of electron of hole. It has been found that the higher energy levels in the lowest minibands are more important than the bandgap energy of the superlattice in the transition near room temperature.departmental bulletin pape

Temperature Dependence of Mid-infrared Photoluminescence for InAs/GaSb Superlattice with Different GaSb Layer Thickness

Photoluminescence (PL) in mid-infrared region on InAs/GaSb superlattice structure grown by MOVPE method was studied. In the case of InAs/GaSb : 2.8/13.4 nm superlattice, PL peak energy and temperature dependence were good agreement with the calculated values of k･p perturbation method. The emission between the energy levels in the miniband corresponding to the bandgap was observed at low temperature or under low excitation conditions. At room temperature, the broad luminescence centered at 4.2 μm was observed. The emission corresponds to between the second smaller energy level. The results show that the energy levels higher than the bandgap are important for the emission from superlattice at higher temperature.departmental bulletin pape

Observation of the Decay B0→D±D*∓

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