title: A multitone current sink for measuring impedance of in-use batteries

authors: Dunn, Christopher

abstract: Measurement of impedance of rechargeable batteries at very low frequencies reveals valuable information relating to battery behaviour and condition. Until now, successful measurements have been made in the laboratory with bench analysers. This requires batteries to be taken out of service for periods ranging from hours to days, which is impractical for units that are needed for continual use or that are difficult to remove for analysis (e.g. electric vehicles), or that are difficult or impossible to access (e.g. satellites, implanted medical devices, distant data centres). This manuscript describes a simple microprocessor-based circuit that draws current at a number of frequencies and provides voltage and current data that can be logged and used to calculate the impedance of batteries in situ. It is a good engineering example of a PIC-based electronic circuit design and verification including C-language code.

text: A multitone current sink for measuring impedance of in-use batteries Measurement of impedance of rechargeable batteries at very low frequencies reveals valuable information relating to battery behaviour and condition. Until now, successful measurements have been made in the laboratory with bench analysers. This requires batteries to be taken out of service for periods ranging from hours to days, which is impractical for units that are needed for continual use or that are difficult to remove for analysis (e.g. electric vehicles), or that are difficult or impossible to access (e.g. satellites, implanted medical devices, distant data centres). This manuscript describes a simple microprocessor-based circuit that draws current at a number of frequencies and provides voltage and current data that can be logged and used to calculate the impedance of batteries in situ. It is a good engineering example of a PIC-based electronic circuit design and verification including C-language code.

year: 2019

title: Firm exporting and employee benefits: first evidence from Vietnam manufacturing SMEs

authors: Vu, Van Huong

subjects: exporting

abstract: This study examines linkages between the export participation of firms and employee benefits in terms of wages and employment quality. Based on a uniquely matched firmworker panel dataset for 2007 and 2009, we find evidence that export participation by firms in Vietnam has a positive impact on wages when taking into account firm characteristics alone. However, the exporter wage premium falls when both firm and worker characteristics are controlled for, and it decreases further when controlling for time-invariant unobservable factors by spell fixed effect estimation. While there are many studies on the export wage premium, the role of export participation on the quality of employment remains largely unexplored. By using a firm-level balanced panel dataset for the same period, our results suggest that export participation has a negative effect on employment quality. Nevertheless, the impact of export participation on both wages and employment quality vary greatly with respect to levels of technology.

text: Firm exporting and employee benefits: first evidence from Vietnam manufacturing SMEs This study examines linkages between the export participation of firms and employee benefits in terms of wages and employment quality. Based on a uniquely matched firmworker panel dataset for 2007 and 2009, we find evidence that export participation by firms in Vietnam has a positive impact on wages when taking into account firm characteristics alone. However, the exporter wage premium falls when both firm and worker characteristics are controlled for, and it decreases further when controlling for time-invariant unobservable factors by spell fixed effect estimation. While there are many studies on the export wage premium, the role of export participation on the quality of employment remains largely unexplored. By using a firm-level balanced panel dataset for the same period, our results suggest that export participation has a negative effect on employment quality. Nevertheless, the impact of export participation on both wages and employment quality vary greatly with respect to levels of technology.

year: 2012-10

title: Informed consent in the Aotearoa New Zealand context

authors: Cargo, Tania

abstract: Psychologists are in very privileged positions; we use our clinical, community, academic, and research skills to support individuals, families, and communities, often during extremely vulnerable times in their lives. Psychologists have specific duties and responsibilities to not only offer a competent and ethical service, but to ensure that clients have been engaged in an open and honest process of gaining informed consent before a psychological service is offered, and either accepted or declined by the client (Knapp, Gottlieb, & Handelsman, 2015; Nagy, 2011).

text: Informed consent in the Aotearoa New Zealand context Psychologists are in very privileged positions; we use our clinical, community, academic, and research skills to support individuals, families, and communities, often during extremely vulnerable times in their lives. Psychologists have specific duties and responsibilities to not only offer a competent and ethical service, but to ensure that clients have been engaged in an open and honest process of gaining informed consent before a psychological service is offered, and either accepted or declined by the client (Knapp, Gottlieb, & Handelsman, 2015; Nagy, 2011).

year: 2016