47 research outputs found
Fighting for the forests: a history of the Western Australian forest protest movement 1895-2001
No full textAs the first comprehensive study of Western Australian forest protest the thesis analyses the protest movement's organisation, campaigns and strategies. Its central argument is that the contemporary Western Australian forest protest movement established a network of urban and south-west activist groups which encouraged broad public support, and that a diversity of protest strategies focused public attention on forest issues and pressured the state government to change its forest policies. The forest protest movement was characterised by its ability to continually adapt its organisation and strategies to changing social and political conditions. This flexible approach to protest not only led to victories in the Shannon River Basin, Lane-Poole Reserve and old growth forest campaigns, but also transformed forest protest into an influential social movement which contributed to the downfall of the Court Liberal Government in 2001
Behind the Big Blue Gate: the Kenyon Institute, a British Eccentricity in Shaykh Jarrah
No full textThe Kenyon Institute based in Shaykh Jarrah has a long history. Established during the British occupation of Jerusalem in 1919, it was an exemplar of the marriage of academia and empire. In its early days, as the British School of Archaeology in Jerusalem, it was biblical, British, and very imperial, but this outlook and reputation changed over time. This essay by a former director (January 2012–December 2019) provides a brief history of the institute, and discusses the recent changes in its character and relationship with the local community. The author also reflects on some personal experiences and thoughts about her time living and working in East Jerusalem
Behind the Big Blue Gate: the Kenyon Institute, a British Eccentricity in Shaykh Jarrah
No full textThe Kenyon Institute based in Shaykh Jarrah has a long history. Established during the British occupation of Jerusalem in 1919, it was an exemplar of the marriage of academia and empire. In its early days, as the British School of Archaeology in Jerusalem, it was biblical, British, and very imperial, but this outlook and reputation changed over time. This essay by a former director (January 2012–December 2019) provides a brief history of the institute, and discusses the recent changes in its character and relationship with the local community. The author also reflects on some personal experiences and thoughts about her time living and working in East Jerusalem
Risk of misloading spent nuclear fuel cask for light water reactors
No full textThe student, Ibrahim Jarrah, submitted this Thesis for approval on 2018-12-13 at 16:30.The spent fuel dry cask should remain subcritical under normal, abnormal, and accident conditions. The cask may become susceptible to criticality if it is misloaded with assemblies that do not conform with the Certificate of Compliance (CoC). Assessment of probability of criticality for a misloaded cask that subsequently experiences an accident during the transportation process is also of interest. To avoid misloading, the cask loading process involves several verification steps to make sure that all of the loaded assemblies satisfy the CoC requirements. However, most of the loading and verification steps are carried out by humans with finite probabilities for errors, which need to be quantified. Quantification of the risk of having a misloaded cask may reduce the conservatism in the cask designs and eliminate unnecessary steps in the spent fuel handling and loading procedure.
In the first part of this study, the probability of misloading a cask with at least one light water reactor, pressurized water reactor (PWR) and boiling water reactor (BWR), fuel assembly is quantified first using the event tree method. An event tree and associated fault trees are developed for the cask loading procedures. Probability distribution functions (PDFs) for all of the human errors are obtained using the Standardized Plant Analysis Risk-Human Reliability Analysis (SPAR-H) human reliability analysis method. Systems Analysis Programs for Hands-on Integrated Reliability Evaluations (SAPHIRE) software is used to quantify the event tree and to calculate the probability of misload. The probability of misloading a cask with at least one fuel assembly is first determined for PWR fuel and it was found to be 5.56E-06, which agrees well with that reported in the literature. The probability of misloading a cask with at least one fuel assembly for the BWR fuel is found to be 2.95E-05. The impact of the cask capacity on the probability of misload is quantified and discussed. The Fussell-Vesely (FV) importance measure is performed to determine the tasks that contribute the most to having a misloaded cask. The effects of the available time to perform a task and the stress level of the operator on the final probability of misload are studied. The available time and stress are found to have a significant impact on the final misload probability.
Based on the neutronic calculations, the cask needs to be misloaded with more than one fuel assemblies in order to become susceptible to criticality. In the second part of this study, an event tree is built to predict the multiple misloads scenarios. Six multiple misloads scenarios are identified from the tree. The probabilities of the six scenarios and the total probability are calculated for casks for both reactor types. The probabilities calculated using this method are found to be 6.73E-07 and 7.55E-06 for PWR and BWR fuels, respectively. In addition, the probability of multiple misloads is calculated as a function of the cask capacity.Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2020-12-01The student, Ibrahim Jarrah, accepted the attached license on 2018-12-13 at 16:25.This Thesis was approved for publication on 2018-12-14 at 09:02.DSpace SAF Submission Ingestion Package generated from Vireo submission #13322 on 2019-02-07 at 14:23:39Made available in DSpace on 2019-02-07T20:44:31Z (GMT). No. of bitstreams: 2
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Previous issue date: 2018-12-14Embargo set by: Seth Robbins for item 109892
Lift date: 2021-02-07T20:44:35Z
Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemU of I Only Restriction Lifted for Item 109892 on 2021-02-08T10:15:18Z
Behind the Big Blue Gate: the Kenyon Institute, a British Eccentricity in Shaykh Jarrah
No full textThe Kenyon Institute based in Shaykh Jarrah has a long history. Established during the British occupation of Jerusalem in 1919, it was an exemplar of the marriage of academia and empire. In its early days, as the British School of Archaeology in Jerusalem, it was biblical, British, and very imperial, but this outlook and reputation changed over time. This essay by a former director (January 2012–December 2019) provides a brief history of the institute, and discusses the recent changes in its character and relationship with the local community. The author also reflects on some personal experiences and thoughts about her time living and working in East Jerusalem
Behind the Big Blue Gate: the Kenyon Institute, a British Eccentricity in Shaykh Jarrah
No full textThe Kenyon Institute based in Shaykh Jarrah has a long history. Established during the British occupation of Jerusalem in 1919, it was an exemplar of the marriage of academia and empire. In its early days, as the British School of Archaeology in Jerusalem, it was biblical, British, and very imperial, but this outlook and reputation changed over time. This essay by a former director (January 2012–December 2019) provides a brief history of the institute, and discusses the recent changes in its character and relationship with the local community. The author also reflects on some personal experiences and thoughts about her time living and working in East Jerusalem
Calcul de structures atomiques et des propriétés radiatives des plasmas de fusion
No full textThe radiative properties are of utmost importance when studying astrophysical and ICF plasmas, particularly in non local thermodynamic equilibrium conditions. This is the reason why we have developed a collisional-radiative model that enables us to calculate the radiative properties of plasmas under any temperature and density conditions. We developed and implemented new Gaunt factors to the CR model. These factors greatly improve the precision when calculating the cross sections of the microscopic processes. These cross sections are required to calculate the populations of the atomic levels. We obtained these new factors by using the distorted-wave and generalized line strength methods of the Flexible Atomic Code (FAC).In order to validate our new-developed CR model, we compared our results to those of Hill and Rose, of a plasma composed of carbon and 5% silicon, in LTE and NLTE conditions. We obtained satisfactory results in both conditions. We also compared our results to the experimental transmission measured by Xiong et al., of a pure silicon plasma, with Te = 72 eV et Ne = 1.3 x 10²¹ cm⁻³. Again, we obtained results that are in good agreement with the measured spectrum. However, we noticed some discrepancies in the line shift of some lines, and some missing transitions. This can be explained by the absence of certain electronic configurations in the calculation of the atomic structure with the Cowan atomic code.We also explored the absorption of a plasma composed of carbon and 5% germanium with a restricted number of electronic configurations. We investigated the effect of configuration interaction and the effect of the radiative field. We also developed new laws that predict the Planck and Rosseland mean opacities very quickly. For the time being, these laws work for carbon, silicon and germanium, with Te between 250 and 350 eV, and Ne between entre 2 et 8x10²³ cm⁻³.Les propriétés radiatives sont d'une importance cruciale lors de l'étude des plasmas astrophysiques et de fusion, particulièrement dans des conditions hors équilibre thermodynamique local (hors-ETL). C'est pourquoi nous avons développé un modèle collisionnel-radiatif, capable de calculer les propriétés radiatives en toutes conditions de température et de densité. Nous avons intégré à ce modèle de nouveaux facteurs de Gaunt développés par nous-mêmes. Ces facteurs permettent d'obtenir des sections efficaces des processus atomiques plus précis que les formules classiques et semi-empiriques, nécessaires au calcul des populations atomiques. Ils ont été obtenus en utilisant des méthodes sophistiquées, telles que les méthodes distorted-wave et generelized-line-strength, à l'aide du code FAC. Dans le but de valider nos résultats, nous les avons comparés dans un premier temps, aux calculs de Hill et Rose d'un plasma composé d'un mélange de carbone et de 5% de silicium, dans des conditions ETL et hors-ETL. Les résultats sont très satisfaisants, aussi bien à l'ETL qu'hors-ETL. Nous avons aussi comparé nos résultats à la transmission mesurée par Xiong et al. d'un plasma de silicium à Te = 72 eV et Ne = 1.3 x 10²¹ cm⁻³. Là encore, nous obtenons un bon accord. Cependant, on constate la présence de quelques écarts au niveau du décalage spectral de certaines raies, ainsi que l'absence de certaines transitions. Cette absence peut s'expliquer par certaines configurations électroniques manquantes dans le calcul de structure atomique. Nous nous sommes aussi intéressés à l'absorption d'un mélange de carbone et de 5% de germanium avec un nombre restreint de configurations électroniques. Nous avons exploré l'effet d'interaction de configurations ainsi que l'effet d'un champ radiatif. Nous avons également déduit des lois permettant de calculer rapidement les lois de Planck et de Rosseland. Ces lois concernent pour le moment le carbone, le silicium et le germanium, pour Te entre 250 et 350 eV et Ne entre 2 et 8 x 10²³ cm⁻³
Calculation of atomic structures and radiative properties of fusion plasmas
No full textLes propriétés radiatives sont d'une importance cruciale lors de l'étude des plasmas astrophysiques et de fusion, particulièrement dans des conditions hors équilibre thermodynamique local (hors-ETL). C'est pourquoi nous avons développé un modèle collisionnel-radiatif, capable de calculer les propriétés radiatives en toutes conditions de température et de densité. Nous avons intégré à ce modèle de nouveaux facteurs de Gaunt développés par nous-mêmes. Ces facteurs permettent d'obtenir des sections efficaces des processus atomiques plus précis que les formules classiques et semi-empiriques, nécessaires au calcul des populations atomiques. Ils ont été obtenus en utilisant des méthodes sophistiquées, telles que les méthodes distorted-wave et generelized-line-strength, à l'aide du code FAC. Dans le but de valider nos résultats, nous les avons comparés dans un premier temps, aux calculs de Hill et Rose d'un plasma composé d'un mélange de carbone et de 5% de silicium, dans des conditions ETL et hors-ETL. Les résultats sont très satisfaisants, aussi bien à l'ETL qu'hors-ETL. Nous avons aussi comparé nos résultats à la transmission mesurée par Xiong et al. d'un plasma de silicium à Te = 72 eV et Ne = 1.3 x 10²¹ cm⁻³. Là encore, nous obtenons un bon accord. Cependant, on constate la présence de quelques écarts au niveau du décalage spectral de certaines raies, ainsi que l'absence de certaines transitions. Cette absence peut s'expliquer par certaines configurations électroniques manquantes dans le calcul de structure atomique. Nous nous sommes aussi intéressés à l'absorption d'un mélange de carbone et de 5% de germanium avec un nombre restreint de configurations électroniques. Nous avons exploré l'effet d'interaction de configurations ainsi que l'effet d'un champ radiatif. Nous avons également déduit des lois permettant de calculer rapidement les lois de Planck et de Rosseland. Ces lois concernent pour le moment le carbone, le silicium et le germanium, pour Te entre 250 et 350 eV et Ne entre 2 et 8 x 10²³ cm⁻³.The radiative properties are of utmost importance when studying astrophysical and ICF plasmas, particularly in non local thermodynamic equilibrium conditions. This is the reason why we have developed a collisional-radiative model that enables us to calculate the radiative properties of plasmas under any temperature and density conditions. We developed and implemented new Gaunt factors to the CR model. These factors greatly improve the precision when calculating the cross sections of the microscopic processes. These cross sections are required to calculate the populations of the atomic levels. We obtained these new factors by using the distorted-wave and generalized line strength methods of the Flexible Atomic Code (FAC).In order to validate our new-developed CR model, we compared our results to those of Hill and Rose, of a plasma composed of carbon and 5% silicon, in LTE and NLTE conditions. We obtained satisfactory results in both conditions. We also compared our results to the experimental transmission measured by Xiong et al., of a pure silicon plasma, with Te = 72 eV et Ne = 1.3 x 10²¹ cm⁻³. Again, we obtained results that are in good agreement with the measured spectrum. However, we noticed some discrepancies in the line shift of some lines, and some missing transitions. This can be explained by the absence of certain electronic configurations in the calculation of the atomic structure with the Cowan atomic code.We also explored the absorption of a plasma composed of carbon and 5% germanium with a restricted number of electronic configurations. We investigated the effect of configuration interaction and the effect of the radiative field. We also developed new laws that predict the Planck and Rosseland mean opacities very quickly. For the time being, these laws work for carbon, silicon and germanium, with Te between 250 and 350 eV, and Ne between entre 2 et 8x10²³ cm⁻³
Calcul de structures atomiques et des propriétés radiatives des plasmas de fusion
No full textThe radiative properties are of utmost importance when studying astrophysical and ICF plasmas, particularly in non local thermodynamic equilibrium conditions. This is the reason why we have developed a collisional-radiative model that enables us to calculate the radiative properties of plasmas under any temperature and density conditions. We developed and implemented new Gaunt factors to the CR model. These factors greatly improve the precision when calculating the cross sections of the microscopic processes. These cross sections are required to calculate the populations of the atomic levels. We obtained these new factors by using the distorted-wave and generalized line strength methods of the Flexible Atomic Code (FAC).In order to validate our new-developed CR model, we compared our results to those of Hill and Rose, of a plasma composed of carbon and 5% silicon, in LTE and NLTE conditions. We obtained satisfactory results in both conditions. We also compared our results to the experimental transmission measured by Xiong et al., of a pure silicon plasma, with Te = 72 eV et Ne = 1.3 x 10²¹ cm⁻³. Again, we obtained results that are in good agreement with the measured spectrum. However, we noticed some discrepancies in the line shift of some lines, and some missing transitions. This can be explained by the absence of certain electronic configurations in the calculation of the atomic structure with the Cowan atomic code.We also explored the absorption of a plasma composed of carbon and 5% germanium with a restricted number of electronic configurations. We investigated the effect of configuration interaction and the effect of the radiative field. We also developed new laws that predict the Planck and Rosseland mean opacities very quickly. For the time being, these laws work for carbon, silicon and germanium, with Te between 250 and 350 eV, and Ne between entre 2 et 8x10²³ cm⁻³.Les propriétés radiatives sont d'une importance cruciale lors de l'étude des plasmas astrophysiques et de fusion, particulièrement dans des conditions hors équilibre thermodynamique local (hors-ETL). C'est pourquoi nous avons développé un modèle collisionnel-radiatif, capable de calculer les propriétés radiatives en toutes conditions de température et de densité. Nous avons intégré à ce modèle de nouveaux facteurs de Gaunt développés par nous-mêmes. Ces facteurs permettent d'obtenir des sections efficaces des processus atomiques plus précis que les formules classiques et semi-empiriques, nécessaires au calcul des populations atomiques. Ils ont été obtenus en utilisant des méthodes sophistiquées, telles que les méthodes distorted-wave et generelized-line-strength, à l'aide du code FAC. Dans le but de valider nos résultats, nous les avons comparés dans un premier temps, aux calculs de Hill et Rose d'un plasma composé d'un mélange de carbone et de 5% de silicium, dans des conditions ETL et hors-ETL. Les résultats sont très satisfaisants, aussi bien à l'ETL qu'hors-ETL. Nous avons aussi comparé nos résultats à la transmission mesurée par Xiong et al. d'un plasma de silicium à Te = 72 eV et Ne = 1.3 x 10²¹ cm⁻³. Là encore, nous obtenons un bon accord. Cependant, on constate la présence de quelques écarts au niveau du décalage spectral de certaines raies, ainsi que l'absence de certaines transitions. Cette absence peut s'expliquer par certaines configurations électroniques manquantes dans le calcul de structure atomique. Nous nous sommes aussi intéressés à l'absorption d'un mélange de carbone et de 5% de germanium avec un nombre restreint de configurations électroniques. Nous avons exploré l'effet d'interaction de configurations ainsi que l'effet d'un champ radiatif. Nous avons également déduit des lois permettant de calculer rapidement les lois de Planck et de Rosseland. Ces lois concernent pour le moment le carbone, le silicium et le germanium, pour Te entre 250 et 350 eV et Ne entre 2 et 8 x 10²³ cm⁻³
