title: A Breathing Stabilization System

authors: Ling, Heping

subjects: Breathing Stabilization System

abstract: Breathing Stabilization System is a new idea and method. The purpose of this system is to produce a device to control a patient’s breathing for gated radiotherapy.

This thesis focuses on building a simple Breathing Stabilization System that includes five solenoids, a power supply and five force sensors to build up the whole system.

Significantly, this thesis will introduce the modeling of solenoids in detail that include how to build a mathematical model of the solenoids. The simulation of the electromagnetic in professional multi-physics software COMSOL will also be explained.

To drive the solenoid system, a voltage-to-current converter is used. This part will be introduced as well as the operational amplifier circuit used by the force sensors.

text: A Breathing Stabilization System Breathing Stabilization System is a new idea and method. The purpose of this system is to produce a device to control a patient’s breathing for gated radiotherapy.

This thesis focuses on building a simple Breathing Stabilization System that includes five solenoids, a power supply and five force sensors to build up the whole system.

Significantly, this thesis will introduce the modeling of solenoids in detail that include how to build a mathematical model of the solenoids. The simulation of the electromagnetic in professional multi-physics software COMSOL will also be explained.

To drive the solenoid system, a voltage-to-current converter is used. This part will be introduced as well as the operational amplifier circuit used by the force sensors.

year: 2008

title: Biotic interactions are an unexpected yet critical control on the complexity of an abiotically driven polar ecosystem.

authors: Lee, Charles Kai-Wu

abstract: Abiotic and biotic factors control ecosystem biodiversity, but their relative contributions remain unclear. The ultraoligotrophic ecosystem of the Antarctic Dry Valleys, a simple yet highly heterogeneous ecosystem, is a natural laboratory well-suited for resolving the abiotic and biotic controls of community structure. We undertook a multidisciplinary investigation to capture ecologically relevant biotic and abiotic attributes of more than 500 sites in the Dry Valleys, encompassing observed landscape heterogeneities across more than 200 km². Using richness of autotrophic and heterotrophic taxa as a proxy for functional complexity, we linked measured variables in a parsimonious yet comprehensive structural equation model that explained significant variations in biological complexity and identified landscape-scale and fine-scale abiotic factors as the primary drivers of diversity. However, the inclusion of linkages among functional groups was essential for constructing the best-fitting model. Our findings support the notion that biotic interactions make crucial contributions even in an extremely simple ecosystem.

text: Biotic interactions are an unexpected yet critical control on the complexity of an abiotically driven polar ecosystem. Abiotic and biotic factors control ecosystem biodiversity, but their relative contributions remain unclear. The ultraoligotrophic ecosystem of the Antarctic Dry Valleys, a simple yet highly heterogeneous ecosystem, is a natural laboratory well-suited for resolving the abiotic and biotic controls of community structure. We undertook a multidisciplinary investigation to capture ecologically relevant biotic and abiotic attributes of more than 500 sites in the Dry Valleys, encompassing observed landscape heterogeneities across more than 200 km². Using richness of autotrophic and heterotrophic taxa as a proxy for functional complexity, we linked measured variables in a parsimonious yet comprehensive structural equation model that explained significant variations in biological complexity and identified landscape-scale and fine-scale abiotic factors as the primary drivers of diversity. However, the inclusion of linkages among functional groups was essential for constructing the best-fitting model. Our findings support the notion that biotic interactions make crucial contributions even in an extremely simple ecosystem.

year: 2019

title: Te Arawa– Kaitaki of Te Arawa Lakes

authors: Curtis, Sir Toby

abstract: The Te Arawa Lakes Trust has embarked on a project to develop a Te Arawa Cultural Values Framework, in regard to the 14 lakes located in our tribal region. There are a host of positives that we believe can accrue as an outcome of this exercise. Already the calibre of people acknowledged for their cultural expertise have added a lot by their attendance. Their presence and contribution injected a level of enthusiasm and confidence in the compilation of the final draft. It is hoped that distribution among the wider community will elicit constructive feedback.

text: Te Arawa– Kaitaki of Te Arawa Lakes The Te Arawa Lakes Trust has embarked on a project to develop a Te Arawa Cultural Values Framework, in regard to the 14 lakes located in our tribal region. There are a host of positives that we believe can accrue as an outcome of this exercise. Already the calibre of people acknowledged for their cultural expertise have added a lot by their attendance. Their presence and contribution injected a level of enthusiasm and confidence in the compilation of the final draft. It is hoped that distribution among the wider community will elicit constructive feedback.

year: 2015