title: The influence of maritime freight cost tail risk on publicly traded industrial and transport companies

authors: Akyildirim, E

subjects: ESG

abstract: This study examines the influence of maritime freight cost tail risk events on stock market prices of industrial and transport-related firms. Our findings reveal a significant asymmetry: extreme negative movements in these indices have a disproportionately large adverse impact on stock returns compared to extreme positive movements. As these indices serve as barometers of global economic health, sharp declines signal contractions in global demand, fuelling investor apprehension. These concerns outweigh the potential benefits of lower input costs for most firms. We also uncover substantial heterogeneity amongst stock responses. Notably, owing to their perceived higher risk, smaller firms and those with ESG controversies are more severely impacted by these negative tail-risk events. Further, we document that strong ESG commitments are sometimes beneficial during negative tail risk events, but not always. These mixed findings suggest that the effects of ESG commitments during tail risk events operate through multiple channels, and these impacts may vary depending on firm characteristics and the nature of the ESG activity.

text: The influence of maritime freight cost tail risk on publicly traded industrial and transport companies This study examines the influence of maritime freight cost tail risk events on stock market prices of industrial and transport-related firms. Our findings reveal a significant asymmetry: extreme negative movements in these indices have a disproportionately large adverse impact on stock returns compared to extreme positive movements. As these indices serve as barometers of global economic health, sharp declines signal contractions in global demand, fuelling investor apprehension. These concerns outweigh the potential benefits of lower input costs for most firms. We also uncover substantial heterogeneity amongst stock responses. Notably, owing to their perceived higher risk, smaller firms and those with ESG controversies are more severely impacted by these negative tail-risk events. Further, we document that strong ESG commitments are sometimes beneficial during negative tail risk events, but not always. These mixed findings suggest that the effects of ESG commitments during tail risk events operate through multiple channels, and these impacts may vary depending on firm characteristics and the nature of the ESG activity.

year: 2025

title: Separating true range measurements from multi-path and scattering interference in commercial range cameras

authors: Dorrington, Adrian A.

subjects: camera

abstract: Time-of-flight range cameras acquire a three-dimensional image of a scene simultaneously for all pixels from a single viewing location. Attempts to use range cameras for metrology applications have been hampered by the multi-path problem, which causes range distortions when stray light interferes with the range measurement in a given pixel. Correcting multi-path distortions by post-processing the three-dimensional measurement data has been investigated, but enjoys limited success because the interference is highly scene dependent. An alternative approach based on separating the strongest and weaker sources of light returned to each pixel, prior to range decoding, is more successful, but has only been demonstrated on custom built range cameras, and has not been suitable for general metrology applications. In this paper we demonstrate an algorithm applied to both the Mesa Imaging SR-4000 and Canesta Inc. XZ-422 Demonstrator unmodified off-the-shelf range cameras. Additional raw images are acquired and processed using an optimization approach, rather than relying on the processing provided by the manufacturer, to determine the individual component returns in each pixel. Substantial improvements in accuracy are observed, especially in the darker regions of the scene.

text: Separating true range measurements from multi-path and scattering interference in commercial range cameras Time-of-flight range cameras acquire a three-dimensional image of a scene simultaneously for all pixels from a single viewing location. Attempts to use range cameras for metrology applications have been hampered by the multi-path problem, which causes range distortions when stray light interferes with the range measurement in a given pixel. Correcting multi-path distortions by post-processing the three-dimensional measurement data has been investigated, but enjoys limited success because the interference is highly scene dependent. An alternative approach based on separating the strongest and weaker sources of light returned to each pixel, prior to range decoding, is more successful, but has only been demonstrated on custom built range cameras, and has not been suitable for general metrology applications. In this paper we demonstrate an algorithm applied to both the Mesa Imaging SR-4000 and Canesta Inc. XZ-422 Demonstrator unmodified off-the-shelf range cameras. Additional raw images are acquired and processed using an optimization approach, rather than relying on the processing provided by the manufacturer, to determine the individual component returns in each pixel. Substantial improvements in accuracy are observed, especially in the darker regions of the scene.

year: 2011

title: Kei moenga - Tārā i te ārero. Lest it be severed from the tongue

authors: Bailey, Iraia Thompson

subjects: te reo Māori

abstract: Tūwharetoa are a distinctive tribal group who are located within the central North Island. With a proud and celebrated history, Tūwharetoa evolved through out time to become a complex and unique tribe, containing a number of sub tribes, each with its own authority, structure and land holdings. However, like all Māori, Tūwharetoa were greatly affected by the impact of European colonisation. In particular the unique language and customs of Tūwharetoa where savaged by the policy of assimilation and the introduction of a new language and its cultural beliefs. Presently the traditional language of Tūwharetoa is in a perilous state, and regardless of the many Māori language initiatives that have been established over the past few decades, the special language of Tūwharetoa is declining. This thesis is concerned with understanding the reasons why the traditional language of Tūwharetoa finds itself in this position, while also assessing the initatives implemented by Tūwharetoa to rectify this situation. Furthermore this study will look to create a possible pathway forward for Tūwharetoa to support the regeneration and revitalisation of the language. Ultimately this thesis will propose a framework bedded within language planning theory, supported by a kaupapa Māori research methodology and founded within the beliefs of Tūwharetoa, to see the return of te reo Māori as the main form of communication for the people of Tūwharetoa, and as a clear marker of our identity and uniqueness.

text: Kei moenga - Tārā i te ārero. Lest it be severed from the tongue Tūwharetoa are a distinctive tribal group who are located within the central North Island. With a proud and celebrated history, Tūwharetoa evolved through out time to become a complex and unique tribe, containing a number of sub tribes, each with its own authority, structure and land holdings. However, like all Māori, Tūwharetoa were greatly affected by the impact of European colonisation. In particular the unique language and customs of Tūwharetoa where savaged by the policy of assimilation and the introduction of a new language and its cultural beliefs. Presently the traditional language of Tūwharetoa is in a perilous state, and regardless of the many Māori language initiatives that have been established over the past few decades, the special language of Tūwharetoa is declining. This thesis is concerned with understanding the reasons why the traditional language of Tūwharetoa finds itself in this position, while also assessing the initatives implemented by Tūwharetoa to rectify this situation. Furthermore this study will look to create a possible pathway forward for Tūwharetoa to support the regeneration and revitalisation of the language. Ultimately this thesis will propose a framework bedded within language planning theory, supported by a kaupapa Māori research methodology and founded within the beliefs of Tūwharetoa, to see the return of te reo Māori as the main form of communication for the people of Tūwharetoa, and as a clear marker of our identity and uniqueness.

year: 2013