title: Effects of non-isotropic scattering, magnetic helicity, and adiabatic focusing on diffusive transport of solar energetic particles

authors: Litvinenko, Yuri E.

subjects: diffusion

abstract: Transport of solar energetic particles in interplanetary space is analyzed. A new systematic derivation of the diffusion approximation is given, which incorporates the effects of non-isotropic scattering, magnetic helicity, and adiabatic focusing in a non-uniform large-scale magnetic field. The derivation is based on a system of stochastic differential equations, equivalent to the Fokker-Planck equation, and the new method is a generalization of the Smoluchowski approximation in the theory of the Brownian motion. Simple, physically transparent expressions for the transport coefficients are derived. Different results of earlier treatments of the problem are related to the assumptions regarding the evolving particle distribution

text: Effects of non-isotropic scattering, magnetic helicity, and adiabatic focusing on diffusive transport of solar energetic particles Transport of solar energetic particles in interplanetary space is analyzed. A new systematic derivation of the diffusion approximation is given, which incorporates the effects of non-isotropic scattering, magnetic helicity, and adiabatic focusing in a non-uniform large-scale magnetic field. The derivation is based on a system of stochastic differential equations, equivalent to the Fokker-Planck equation, and the new method is a generalization of the Smoluchowski approximation in the theory of the Brownian motion. Simple, physically transparent expressions for the transport coefficients are derived. Different results of earlier treatments of the problem are related to the assumptions regarding the evolving particle distribution

year: 2012

title: Nutritious Food and Water: The best goods for wellbeing?

authors: Weijers, Dan M.

abstract: Presenetd at International Conference on “Water, Food and Nutrition Security for Health and Wellbeing.” Conference held at the University of Delhi, India (and online).

text: Nutritious Food and Water: The best goods for wellbeing? Presenetd at International Conference on “Water, Food and Nutrition Security for Health and Wellbeing.” Conference held at the University of Delhi, India (and online).

year: 2021-12-14

title: Tangihanga: The ultimate form of Māori cultural expression - overview of a research programme

authors: Nikora, Linda Waimarie

subjects: Māori

abstract: Death, observed through the process of tangihanga (time set aside to grieve and mourn, rites for the dead) or tangi (to grieve and mourn), is the ultimate form of Māori cultural expression. It is also the topic least studied by Māori or understood by outsiders, even after televised funeral rites of Māori leaders and intrusive media engagements with more humble family crises. It has prevailed as a cultural priority since earliest European contact, despite missionary and colonial impact and interference, and macabre Victorian fascination. Change is speculative rather than confirmed. Tangi and death rituals have yet to be rigorously examined in the Māori oral canon, or in the archival and historic record that may be discarded or reinforced by current practice. As researchers we are committed to studying tangi, conscious of the belief that such work carries the inherent risk of karanga aituā (inviting misfortune or even death itself) by drawing attention to it. Contemporary Aotearoa New Zealand is constantly touched by aspects of tangi practice through popular media and personal exposure.

This volatile subject nevertheless demands careful and comprehensive scrutiny in order to extend and enrich the knowledge base, reveal the logic that guides ritual, inform the wider New Zealand community and, more importantly, support the cultural, social, ritual, economic and decision making processes of bereaved whānau (family, including extended family), people affiliated with marae (communal meeting complex) and iwi (tribe, tribal). This paper provides an overview of a research programme that began in July 2009, based at The University of Waikato. The programme is funded by Ngā Pae o te Māramatanga, the Marsden Fund of New Zealand and the Health Research Council of New Zealand.

text: Tangihanga: The ultimate form of Māori cultural expression - overview of a research programme Death, observed through the process of tangihanga (time set aside to grieve and mourn, rites for the dead) or tangi (to grieve and mourn), is the ultimate form of Māori cultural expression. It is also the topic least studied by Māori or understood by outsiders, even after televised funeral rites of Māori leaders and intrusive media engagements with more humble family crises. It has prevailed as a cultural priority since earliest European contact, despite missionary and colonial impact and interference, and macabre Victorian fascination. Change is speculative rather than confirmed. Tangi and death rituals have yet to be rigorously examined in the Māori oral canon, or in the archival and historic record that may be discarded or reinforced by current practice. As researchers we are committed to studying tangi, conscious of the belief that such work carries the inherent risk of karanga aituā (inviting misfortune or even death itself) by drawing attention to it. Contemporary Aotearoa New Zealand is constantly touched by aspects of tangi practice through popular media and personal exposure.

This volatile subject nevertheless demands careful and comprehensive scrutiny in order to extend and enrich the knowledge base, reveal the logic that guides ritual, inform the wider New Zealand community and, more importantly, support the cultural, social, ritual, economic and decision making processes of bereaved whānau (family, including extended family), people affiliated with marae (communal meeting complex) and iwi (tribe, tribal). This paper provides an overview of a research programme that began in July 2009, based at The University of Waikato. The programme is funded by Ngā Pae o te Māramatanga, the Marsden Fund of New Zealand and the Health Research Council of New Zealand.

year: 2010