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A Positive Psychological Approach to Student Impairment: A Model for SchoolsKajfasz, Jessica M. 31 January 2012 (has links)
No description available.
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Relativistic close coupling calculations for fundamental atomic processes in astrophysicsChen, Guo-Xin 11 March 2004 (has links)
No description available.
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Estimation of the shear strengths of root reinforced soilsBeal, Philip Edward January 1987 (has links)
No description available.
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Benjamin E. Mays: The Role of Character in the Prolonged Struggle for African American Civil RightsLawler, Milton 17 January 2012 (has links)
This study examined the life of Benjamin Elijah Mays, in terms of discerning his character strengths and the role they played in addressing equality issues during his lifetime and beyond. Character was defined by the analytic framework of Peterson and Seligman's Character Strengths and Virtues: A Handbook and Classification. An examination of Mays's written archived works as well as key secondary references served as data sources. Peterson and Seligman's Values In Action-Inventory of Strengths (derived from and based upon their classification scheme) was converted into if/then statements to identify Mays's character strengths and virtues associated with specific historical events. The historical context focused on the social setting/event of Jim Crow and legally sanctioned segregation. Addressed was how Mays's character assisted in bringing about the end of segregation in public venues, ushering in voting rights for all disenfranchised Americans, and his use of the church and academia to recruit champions for equality in worship and life. Mays undertook an 88 year journey toward equality, a journey that spanned second slavery, passage of the Civil Rights Act of 1964, the Voting Rights Act of 1965, implementation of and failure to enforce affirmative action plans, and 44 years as a leader in the fight against segregation. Despite the fact that both the United States Senate and the House of Representatives unanimously passed resolutions in 1983 and 2001(SRs 188 and 23; HRs 17 and 49, respectively) to award Mays the Presidential Medal of Freedom “in honor of his distinguished career as an educator, civil and human rights leader, and public theologian,” the Medal was denied by the Reagan and G.W. Bush administrations. The equality issues that existed during Mays's life continue to haunt American society, but Mays's importance to the continuing struggle for civil rights and the character strengths that he brought to this struggle are undeniable and provide fertile territory for future research. / Ph. D.
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The relationship between hope, executive function, behavioral/emotional strengths and school functioning in 5th and 6th grade studentsSears, Kelli 10 July 2007 (has links)
No description available.
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Investigating the impact of strengths use on well-being : the mediating role of leader-member exchange / Jolandie ViljoenViljoen, Jolandie January 2014 (has links)
Financial institutions are faced with many changes and challenges, especially after the global financial crisis; and look to their human capital to provide their competitive advantage. It is therefore important to investigate effective means of managing employees in a way that could foster work engagement. Strengths use and leader-member exchange (LMX) quality create an opportunity for organisations to manage and utilise their employees more effectively and finally promote work engagement.
The objective of this research study was to investigate the mediating effects of LMX quality in the relationship between strengths use and work engagement. A questionnaire was compiled, utilising the Strengths-based Leadership Questionnaire, the LMX-7 and the Utrecht Work Engagement Scale. These measuring instruments were administered to a total of 213 (N = 213) individuals employed in the financial services industry. For the purpose of this research study the quality of the LMX relationship was measured from the perspective of the subordinates. Strengths use was positively related to LMX quality and LMX quality was positively related to work engagement. Additionally, LMX quality played a mediating role in the relationship between strengths use and work engagement. Therefore, organisations can, by promoting strengths use and high quality LMX, achieve higher levels of employee work engagement. This research study is the first to include strengths use, LMX quality and work engagement in one mediating model. / MCom (Industrial Psychology), North-West University, Potchefstroom Campus, 2014
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Comparison of physical properties of oxidative sintered pellets produced with UG2 or metallurgical grade South African chromite : a case study / Ralph Ivor GlastonburyGlastonbury, Ralph Ivor January 2014 (has links)
The Bushveld Igneous Complex (BIC) in South Africa holds approximately three
quarters of the world’s viable chromite ore deposits. Most chromite is used for the
production of ferrochromium (FeCr), which is a relatively crude alloy. Several chromite
seams exist in the BIC. The most economically viable seams are the lower group 6 (LG6),
the middle group 1 and 2 (MG1 and 2) and the upper group 2 (UG2) seams. The LG and MG
seams are exploited specifically for their chromium content, whereas the UG2 seam is mainly
exploited for platinum group minerals (PGM). However, the upgraded UG2 chromite in the
PGM tailing is increasingly being used as a feedstock for FeCr production. Many different
process variations exist for FeCr production. However, the process option applied in most
green and brown field FeCr expansion projects during the last two decades in South Africa
has been the oxidative sintered process (also referred to as the Outotec or Outokumpu
process). Notwithstanding the common application of the oxidative sintered pelletised feed
technology in the South African FeCr industry, and the increased utilisation of beneficiated
UG2 ore, a direct comparison of the physical properties of oxidative sintered pellets produced
from UG2 with the physical properties of that produced with conventional metallurgical
grade chromite ore is currently lacking in the peer-reviewed scientific literature. Therefore,
the physical properties of oxidative sintered pellets produced from a typical beneficiated
South African UG2 ore were compared with the physical properties of that produced with
conventional South African metallurgical grade chromite ore in this study.
The results indicated that the case study metallurgical grade chromite ore required
13 kWh/t more energy to mill than the case study UG2 ore prior to pelletisation, which can
lead to substantial cost savings. The compressive strength of the oxidative sintered pellets of
both case study ores statistically showed that oxidative sintered pellets made from UG2 ore
Abstract
were the same or better than those prepared from metallurgical grade chromite ore. A
comparison of the abrasion strengths of the oxidative sintered pellets of both case study ores
indicated that the pellets prepared from UG2 ore were superior compared to the metallurgical
grade pellets. The reasons for the superior UG2 pellet strength were investigated with
backscatter-, secondary electron- and elemental X-ray mapping scanning electron microscopy
(SEM), which indicated that differences in crystalline structures at least partially contributed
to the differences observed. Results presented here can be utilised by FeCr producers to
better quantify the advantages and disadvantages associated with the use of UG2 ore for FeCr
production. / MSc (Chemistry), North-West University, Potchefstroom Campus, 2014
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A structural model of first-year students' strengths use, deficit improvement, fit with study course and engagement / Gabrielle van NiekerkVan Niekerk, Gabrielle January 2015 (has links)
Although student enrolment in South African universities has significantly increased, the
retention and graduation rates remain low. One reason for the low student success is the lack
of engagement in their studies. It is therefore very important for universities to determine
the various predictors of student engagement. The aim of this study is to establish whether
proactive behaviour towards strengths use, proactive behaviour towards deficit improvement
and fit with study course have an impact on engagement. Universities need to focus on
creating an environment in which students can actively use their strengths and develop their
weaknesses for improved study fit and enhanced levels of engagement.
The general objective of this research study was to test a structural model of proactive
behaviour towards strengths use (PBSU), proactive behaviour towards deficit improvement
(PBDI), fit with study course and engagement amongst first-year students, and to test the
mediating effect of study course between PBSU/PBDI and engagement. This study was
conducted in order to gain more knowledge and a better understanding of the antecedents of
engagement amongst first-year students in South African.
The Mplus and SPSS programmes were utilised for the statistical analysis of the data. A
cross-sectional research design was used with a sample of 692 first-year students of a higher
education institution in South Africa. The hypothesised model was tested by performing
structural equation modelling. The bootstrapping method was used to identify possible
mediating effects of fit with study course.
The results confirmed a significant positive relationship between PBDI and engagement but
no direct significant relationship between PBSU and engagement (although the significant
levels were close to 0.05). The results also indicated a significant positive relationship with
PBDI and engagement. PBDI was also found to be positively related to engagement.
Furthermore, fit with study course fully mediated the relationship between PBSU and
engagement and partially mediated the relationship between PBDI and engagement.
After conclusions for the study had been drawn recommendations for the institution,
students, as well as for future research were made. / MCom (Industrial Psychology), North-West University, Potchefstroom Campus, 2015
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Investigating the impact of strengths use on well-being : the mediating role of leader-member exchange / Jolandie ViljoenViljoen, Jolandie January 2014 (has links)
Financial institutions are faced with many changes and challenges, especially after the global financial crisis; and look to their human capital to provide their competitive advantage. It is therefore important to investigate effective means of managing employees in a way that could foster work engagement. Strengths use and leader-member exchange (LMX) quality create an opportunity for organisations to manage and utilise their employees more effectively and finally promote work engagement.
The objective of this research study was to investigate the mediating effects of LMX quality in the relationship between strengths use and work engagement. A questionnaire was compiled, utilising the Strengths-based Leadership Questionnaire, the LMX-7 and the Utrecht Work Engagement Scale. These measuring instruments were administered to a total of 213 (N = 213) individuals employed in the financial services industry. For the purpose of this research study the quality of the LMX relationship was measured from the perspective of the subordinates. Strengths use was positively related to LMX quality and LMX quality was positively related to work engagement. Additionally, LMX quality played a mediating role in the relationship between strengths use and work engagement. Therefore, organisations can, by promoting strengths use and high quality LMX, achieve higher levels of employee work engagement. This research study is the first to include strengths use, LMX quality and work engagement in one mediating model. / MCom (Industrial Psychology), North-West University, Potchefstroom Campus, 2014
|
50 |
Comparison of physical properties of oxidative sintered pellets produced with UG2 or metallurgical grade South African chromite : a case study / Ralph Ivor GlastonburyGlastonbury, Ralph Ivor January 2014 (has links)
The Bushveld Igneous Complex (BIC) in South Africa holds approximately three
quarters of the world’s viable chromite ore deposits. Most chromite is used for the
production of ferrochromium (FeCr), which is a relatively crude alloy. Several chromite
seams exist in the BIC. The most economically viable seams are the lower group 6 (LG6),
the middle group 1 and 2 (MG1 and 2) and the upper group 2 (UG2) seams. The LG and MG
seams are exploited specifically for their chromium content, whereas the UG2 seam is mainly
exploited for platinum group minerals (PGM). However, the upgraded UG2 chromite in the
PGM tailing is increasingly being used as a feedstock for FeCr production. Many different
process variations exist for FeCr production. However, the process option applied in most
green and brown field FeCr expansion projects during the last two decades in South Africa
has been the oxidative sintered process (also referred to as the Outotec or Outokumpu
process). Notwithstanding the common application of the oxidative sintered pelletised feed
technology in the South African FeCr industry, and the increased utilisation of beneficiated
UG2 ore, a direct comparison of the physical properties of oxidative sintered pellets produced
from UG2 with the physical properties of that produced with conventional metallurgical
grade chromite ore is currently lacking in the peer-reviewed scientific literature. Therefore,
the physical properties of oxidative sintered pellets produced from a typical beneficiated
South African UG2 ore were compared with the physical properties of that produced with
conventional South African metallurgical grade chromite ore in this study.
The results indicated that the case study metallurgical grade chromite ore required
13 kWh/t more energy to mill than the case study UG2 ore prior to pelletisation, which can
lead to substantial cost savings. The compressive strength of the oxidative sintered pellets of
both case study ores statistically showed that oxidative sintered pellets made from UG2 ore
Abstract
were the same or better than those prepared from metallurgical grade chromite ore. A
comparison of the abrasion strengths of the oxidative sintered pellets of both case study ores
indicated that the pellets prepared from UG2 ore were superior compared to the metallurgical
grade pellets. The reasons for the superior UG2 pellet strength were investigated with
backscatter-, secondary electron- and elemental X-ray mapping scanning electron microscopy
(SEM), which indicated that differences in crystalline structures at least partially contributed
to the differences observed. Results presented here can be utilised by FeCr producers to
better quantify the advantages and disadvantages associated with the use of UG2 ore for FeCr
production. / MSc (Chemistry), North-West University, Potchefstroom Campus, 2014
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