Thomas Barrett
Biographic Data
| ID | 5236789 |
|---|---|
| NAME | Thomas Barrett |
| GIVEN NAMES | Thomas |
| FAMILY NAME | Barrett |
| SIGNATURE | BARRETT T |
| AFFILIATIONS | University of California System |
| VERIFIED | No |
| TOTAL WORKS | 6 |
| TOTAL CITATIONS | 9 |
| WORKS AS AUTHOR | 6 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1986 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 2 |
Determinism and Asymmetry in General Relativity
This paper concerns the question of which collections of general relativistic spacetimes are deterministic relative to which definitions. We begin by considering a series of three definitions of increasing strength due to Belot (1995). The strongest of these definitions is particularly interesting for spacetime theories because it involves an asymmetry condition called ``rigidity'' that has been studied previously in a different context (Geroch 1…
A Hierarchy of Spacetime Symmetries
We present a hierarchy of symmetry conditions within the context of general relativity. The weakest condition captures a sense in which spacetime is free of symmetry "holes" of a certain type. All standard models of general relativity satisfy the condition but we show that violations can occur if the Hausdorff assumption is dropped. On the other extreme, the strongest condition of the hierarchy is satisfied whenever a model is completely devoid o…
Response from the Author
Sistemas de salud mental en El Salvador, Guatemala y Nicaragua
The authors evaluated the mental health systems of El Salvador, Guatemala, and Nicaragua, using a group of select indicators. The World Health Organization Assessment Instrument for Mental Health Systems (WHO-AIMS) was used to collect data from the nations. The national mental health systems of Nicaragua, Guatemala, and El Salvador have serious limitations, especially in primary care, and a marked lack of qualified human resources. Budget allocat…
Ethnographic Approaches to Child Care Research
This article presents the findings from a review of ethnographic approaches to child care research. Ethnographic research has enhanced researcher and practitioner understandings of the child care environment by providing entry into the child care center as an important site not only of development and education, but also of social reproduction and enculturation. The extant research is summarized by identifying four dominant perspectives for viewi…
Teaching The Middle Phase To Social Work Students
This paper describes an experiential model for teaching final year social work students how to deal with feeling issues in practice. It focuses on the middle phase of intervention primarily, using an outside person role playing a client in a classroom setting. The aim of the model is to enhance the students' ability in learning advanced empathic skills
Ethnographic Approaches to Child Care Research
This article presents the findings from a review of ethnographic approaches to child care research. Ethnographic research has enhanced researcher and practitioner understandings of the child care environment by providing entry into the child care center as an important site not only of development and education, but also of social reproduction and enculturation. The extant research is summarized by identifying four dominant perspectives for viewi…
Teaching The Middle Phase To Social Work Students
This paper describes an experiential model for teaching final year social work students how to deal with feeling issues in practice. It focuses on the middle phase of intervention primarily, using an outside person role playing a client in a classroom setting. The aim of the model is to enhance the students' ability in learning advanced empathic skills
A Hierarchy of Spacetime Symmetries
We present a hierarchy of symmetry conditions within the context of general relativity. The weakest condition captures a sense in which spacetime is free of symmetry "holes" of a certain type. All standard models of general relativity satisfy the condition but we show that violations can occur if the Hausdorff assumption is dropped. On the other extreme, the strongest condition of the hierarchy is satisfied whenever a model is completely devoid o…
Teaching The Middle Phase To Social Work Students
This paper describes an experiential model for teaching final year social work students how to deal with feeling issues in practice. It focuses on the middle phase of intervention primarily, using an outside person role playing a client in a classroom setting. The aim of the model is to enhance the students' ability in learning advanced empathic skills
Ethnographic Approaches to Child Care Research
This article presents the findings from a review of ethnographic approaches to child care research. Ethnographic research has enhanced researcher and practitioner understandings of the child care environment by providing entry into the child care center as an important site not only of development and education, but also of social reproduction and enculturation. The extant research is summarized by identifying four dominant perspectives for viewi…
Sistemas de salud mental en El Salvador, Guatemala y Nicaragua
The authors evaluated the mental health systems of El Salvador, Guatemala, and Nicaragua, using a group of select indicators. The World Health Organization Assessment Instrument for Mental Health Systems (WHO-AIMS) was used to collect data from the nations. The national mental health systems of Nicaragua, Guatemala, and El Salvador have serious limitations, especially in primary care, and a marked lack of qualified human resources. Budget allocat…
Response from the Author
A Hierarchy of Spacetime Symmetries
We present a hierarchy of symmetry conditions within the context of general relativity. The weakest condition captures a sense in which spacetime is free of symmetry "holes" of a certain type. All standard models of general relativity satisfy the condition but we show that violations can occur if the Hausdorff assumption is dropped. On the other extreme, the strongest condition of the hierarchy is satisfied whenever a model is completely devoid o…
Determinism and Asymmetry in General Relativity
This paper concerns the question of which collections of general relativistic spacetimes are deterministic relative to which definitions. We begin by considering a series of three definitions of increasing strength due to Belot (1995). The strongest of these definitions is particularly interesting for spacetime theories because it involves an asymmetry condition called ``rigidity'' that has been studied previously in a different context (Geroch 1…
Medicine (3 works) · Cosmology and Gravitation Theories (2 works) · Pedagogy (2 works) · Political science (2 works) · Psychology (2 works) · Relativity and Gravitational Theory (2 works) · Spacetime (2 works) · Advances in Oncology and Radiotherapy (1 work) · Anthropology (1 work) · Asymmetry (1 work)