6,715 research outputs found
Symmetries of Doubly Heavy Baryons
For very heavy quarks, the two heavy quarks in a doubly heavy baryon are
expected to form a pointlike, heavy diquark in an antitriplet color
configuration. In this limit the dynamics of the light degrees of freedom
`factorize' from the dynamics of the heavy diquark system, and a superflavor
symmetry emerges which relates the properties of doubly heavy baryons to heavy
mesons. The charm quark may not be heavy enough for the diquark in a
to be regarded as pointlike. However, there are indications from the
results of a nonrelativistic constituent quark model that many of the
consequences of factorization emerge even though the model does not assume a
quark-diquark structure and the mean separation of the two heavy quarks in the
model is not small. We discuss the consequences of factorization for the
spectroscopy of doubly heavy baryons and compare these consequences to results
from a quark model. We also discuss the possibility of treating the strange
quark as a heavy quark and applying these ideas to the .Comment: To appear in the proceedings for the Eleventh Conference on the
Intersections of Particle and Nuclear Physics (CIPANP 2012
Coxeter-Knuth graphs and a signed Little map for type B reduced words
We define an analog of David Little's algorithm for reduced words in type B,
and investigate its main properties. In particular, we show that our algorithm
preserves the recording tableau of Kra\'{s}kiewicz insertion, and that it
provides a bijective realization of the Type B transition equations in Schubert
calculus. Many other aspects of type A theory carry over to this new setting.
Our primary tool is a shifted version of the dual equivalence graphs defined by
Assaf and further developed by Roberts. We provide an axiomatic
characterization of shifted dual equivalence graphs, and use them to prove a
structure theorem for the graph of Type B Coxeter-Knuth relations.Comment: 41 pages, 10 figures, many improvements from version 1, substantively
the same as the version in Electronic Journal of Combinatorics, Vol 21, Issue
Chronic and transitory poverty in post-apartheid South Africa: evidence from KwaZulu-Natal
* The work reported here is the outcome of a collaborative project between researchers a
No. 3: A Migration Audit of Poverty Reduction Strategies in Southern Africa
Southern Africa is characterized by long-established patterns of intra-regional migration, with countries sending and receiving labour migrants especially for employment in mines and on commercial farms and plantations since the late nineteenth century. However, these patterns and processes have undergone notable change in recent decades, the outcome being a progressive intensification of mobility in the region. The underlying determinants of this trend include increased and new opportunities for internal and cross-border movement following the end of apartheid, the region’s increasing engagement with the global economy, persistently high and worsening levels of poverty and unemployment, the impact of the HIV/AIDS pandemic, and the displacement and forced migration borne out of conflict and civil strife
These changing dynamics are occurring at a time when there is an increasing recognition of and desire to understand the multifaceted and complex relationship between migration, livelihoods and poverty. This coincides with the emergence of a ‘New Poverty Agenda’, which builds upon the 1990 and 2000 World Development Reports and reflects the concern with poverty reduction as an integral part of the international development paradigm. At the international level, the Millennium Development Goals form an important expression of this agenda. Similarly, since 1999, Poverty Reduction Strategy Papers (PRSPs) have become the most noteworthy policy instruments in low income countries to emanate from the new poverty agenda.
The principal objective of this paper is to examine the extent to which recent poverty reduction strategies and policy in Southern Africa reflect the current understanding of migration and its dynamics. This is of particular relevance since such policies, either directly or indirectly, can promote, accommodate or inhibit population mobility as well as affect the experiences of those who move and stay behind. The analysis also provides some insight into the prevailing assumptions about migration and development of regional organizations, governments and donors that have shaped poverty reduction strategies in the sub-region.
This audit is organised into four chapters. Chapter 2 provides a content analysis of migration in SADC’s Regional Indicative Strategic Development Plan (RISDP, 2004). The next chapter examines the seven low-income SADC countries that have adopted the World Bank/IMF Poverty Reduction Strategy Paper approach and shows how migration issues are dealt with in their PRSPs. The report then provides an analysis of how migration has been incorporated in the general poverty reduction strategies of middle-income countries. Based on the results of the audit, the final chapter identifies the issues and considerations necessary to effectively mainstream migration in ongoing poverty reduction strategies in Southern Africa, at the provincial, national and regional levels.
Study Approach
The study is a review of the recently completed Regional Indicative Strategic Development Plan for the SADC region, the Poverty Reduction Strategy Papers and national poverty reduction strategies produced by countries in the region, and other relevant documentation. In terms of the assessment framework used for the analysis, this report examines three dimensions of the mainstreaming of migration. The first is the extent to which migration issues have been described in the poverty profile or situational analysis contained in the strategy documents. These profiles aim to identify the nature and causes of poverty, and are natural focal points for the inclusion of specific concerns and opportunities pertaining to migration. The focus is on identifying analytical and structural gaps. Secondly, the extent to which the links between migration and poverty have been incorporated into this contextual analysis is addressed. The third and final dimension is the degree of sensitivity to migration issues in the policy and programmatic responses that are formulated to address national poverty situations and challenges. This entails a reasonably comprehensive review of the sector-based priorities or focus areas that collectively form the basis of poverty reduction strategies. This review will also assess whether mobile populations are specifically targeted and whether they are recognised as a means of poverty reduction
A tale of two funerals: civic ritual, public mourning and community participation in late nineteenth century Middlesbrough
The complex holiday calendar of 1902: responses to the coronation of Edward VII and the growth of Edwardian event fatigue
No. 3: A Migration Audit of Poverty Reduction Strategies in Southern Africa
Southern Africa is characterized by long-established patterns of intra-regional migration, with countries sending and receiving labour migrants especially for employment in mines and on commercial farms and plantations since the late nineteenth century. However, these patterns and processes have undergone notable change in recent decades, the outcome being a progressive intensification of mobility in the region. The underlying determinants of this trend include increased and new opportunities for internal and cross-border movement following the end of apartheid, the region’s increasing engagement with the global economy, persistently high and worsening levels of poverty and unemployment, the impact of the HIV/AIDS pandemic, and the displacement and forced migration borne out of conflict and civil strife
These changing dynamics are occurring at a time when there is an increasing recognition of and desire to understand the multifaceted and complex relationship between migration, livelihoods and poverty. This coincides with the emergence of a ‘New Poverty Agenda’, which builds upon the 1990 and 2000 World Development Reports and reflects the concern with poverty reduction as an integral part of the international development paradigm. At the international level, the Millennium Development Goals form an important expression of this agenda. Similarly, since 1999, Poverty Reduction Strategy Papers (PRSPs) have become the most noteworthy policy instruments in low income countries to emanate from the new poverty agenda.
The principal objective of this paper is to examine the extent to which recent poverty reduction strategies and policy in Southern Africa reflect the current understanding of migration and its dynamics. This is of particular relevance since such policies, either directly or indirectly, can promote, accommodate or inhibit population mobility as well as affect the experiences of those who move and stay behind. The analysis also provides some insight into the prevailing assumptions about migration and development of regional organizations, governments and donors that have shaped poverty reduction strategies in the sub-region.
This audit is organised into four chapters. Chapter 2 provides a content analysis of migration in SADC’s Regional Indicative Strategic Development Plan (RISDP, 2004). The next chapter examines the seven low-income SADC countries that have adopted the World Bank/IMF Poverty Reduction Strategy Paper approach and shows how migration issues are dealt with in their PRSPs. The report then provides an analysis of how migration has been incorporated in the general poverty reduction strategies of middle-income countries. Based on the results of the audit, the final chapter identifies the issues and considerations necessary to effectively mainstream migration in ongoing poverty reduction strategies in Southern Africa, at the provincial, national and regional levels.
Study Approach
The study is a review of the recently completed Regional Indicative Strategic Development Plan for the SADC region, the Poverty Reduction Strategy Papers and national poverty reduction strategies produced by countries in the region, and other relevant documentation. In terms of the assessment framework used for the analysis, this report examines three dimensions of the mainstreaming of migration. The first is the extent to which migration issues have been described in the poverty profile or situational analysis contained in the strategy documents. These profiles aim to identify the nature and causes of poverty, and are natural focal points for the inclusion of specific concerns and opportunities pertaining to migration. The focus is on identifying analytical and structural gaps. Secondly, the extent to which the links between migration and poverty have been incorporated into this contextual analysis is addressed. The third and final dimension is the degree of sensitivity to migration issues in the policy and programmatic responses that are formulated to address national poverty situations and challenges. This entails a reasonably comprehensive review of the sector-based priorities or focus areas that collectively form the basis of poverty reduction strategies. This review will also assess whether mobile populations are specifically targeted and whether they are recognised as a means of poverty reduction
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