Preserving digital local news

Allen, Robert B.; Johnson, Kirsten A.

doi:10.1108/02640470810879527

Cited by 3 publications

(4 citation statements)

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“…2,3 This price can cause battery packs to cost in excess of $10,000 per vehicle and account for 30-50% of total vehicle cost. 4 Decreasing the price of the battery pack will be extremely important in making EVs price competitive in the automobile market.…”

mentioning

confidence: 99%

Model-Based SEI Layer Growth and Capacity Fade Analysis for EV and PHEV Batteries and Drive Cycles

Lawder

Northrop

Subramanian

2014

J. Electrochem. Soc.

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Capacity fade experienced by electric vehicle (EV) and plug-in hybrid electric vehicle (PHEV) batteries will affect the economic and technological value of the battery pack during EV life as well as the value of the battery at the end of life. The growth of the solid-electrolyte interface (SEI) layer is a major cause of capacity fade. We studied the fade caused by SEI layer growth for eight different driving cycles (which include regenerative braking), and six charging protocols. In addition, we looked at the growth caused by varying the depth of discharge during cycling. Constant current and constant current-constant voltage charging patterns at differing rates were studied. Results showed that for half of the driving cycles regenerative braking increased the life-time energy utilization of the battery in addition to increasing the capacity during a single cycle. For the other half of the driving cycles it is shown that while regenerative braking may be beneficial during a single cycle, over the life of the battery it can decrease the total usable energy. These cases were studied using a reformulated porous electrode pseudo two dimensional model that included SEI layer growth as a side reaction. While working electric vehicles (EV) have been in existence for over a century (a lead-acid battery powered car achieved speeds of 30m/s in 1899), the price of EVs has not become competitive with their internal combustion engine (ICE) counterparts.1 EV sales are currently aided by subsidies ranging from $3,000 in China to $7,500 in the US and Western Europe to $10,000 in Japan.2 One of the causes of the high prices of EVs is the expensive nature of the vehicle's battery pack, which is not required by ICE vehicles running entirely on gas (hybrids operate on a combination of both systems with plug-in hybrid electric vehicles (PHEV) being able to operate in an all-electric mode). Most currently available and planned EVs (and PHEVs) use a lithium-ion (Li-ion) battery chemistry. Li-ion EV battery pack costs are estimated at between $600-$1,200 per kWh of energy capacity. 2,3 This price can cause battery packs to cost in excess of $10,000 per vehicle and account for 30-50% of total vehicle cost. 4 Decreasing the price of the battery pack will be extremely important in making EVs price competitive in the automobile market.As EV and PHEVs age, their battery packs will have to be replaced due to capacity and power fade. Power fade is defined as the loss of cell power caused by increased cell impedance from aging. Capacity fade is defined as the loss of energy storage capacity due to degradation caused by cycling.5 Based on present requirements, EV batteries that have lost 20% of their initial factory capacity are no longer useful for automotive use and should be replaced. 6 Typically, an EV battery will last between 5 to 10 years within its automotive application depending on driving and charging patterns. Nissan estimates that the battery installed in the 2011 Nissan Leaf will contain approximately 80% of its original capacity ...

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mentioning

confidence: 99%

Model-Based SEI Layer Growth and Capacity Fade Analysis for EV and PHEV Batteries and Drive Cycles

Lawder

Northrop

Subramanian

2014

J. Electrochem. Soc.

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“…In addition, the news images do not only provide contextual evidence for the history, they are also a record of the filming industry in a moment of history (p. 22). However, there is no key effort exerted to preserve the news archives, and hence, the "draft of history" is lost (Allen and Johnson, 2008).…”

Section: Literature Reviewmentioning

confidence: 99%

“…The lack of resources has been a challenge to the preservation of the news archives. Digitalisation of news media brings new opportunities to preserve the historic resources (Allen and Johnson, 2008), however, the possible solution comes with new challenges, technically and in other social and political aspects of the society. Thus, Alysen's (2001) research of archival television concluded with a reminder: Media scholars have a significant, if generally unacknowledged, interest in the legal standing of broadcast material because, without the legislative protection of compulsory deposit of audiovisual materials, large amounts of broadcast materials will continue to be out of the reach of the research community.…”

Section: Literature Reviewmentioning

confidence: 99%

The preservation of news archives: the case of Asia Television (ATV) in Hong Kong

Lee

2019

AEDS

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Purpose The purpose of this paper is to discuss the urgency to ensure the preservation of the news archives of the crisis-packed Hong Kong-based Asia Television (ATV), the first Chinese television station in the world. This paper also explores the life and times as well as the future of the historical collections of the ATV archives, which is a treasure trove that covers key events in Hong Kong’s history since 1957, a decade before its major rival Television Broadcasts Limited began to go on air. Design/methodology/approach Adopting the qualitative approach with in-depth face-to-face interviews, the now defunct ATV News’ longest-serving as well as its very last Chief Librarians discusses the bleeding of priceless history in the 62-year-old news archives which contain Hong Kong’s collective memories. Findings An important role of the old news footage is to capture the public’s memories and to take people back to the actual unfolding of landmark events. The interview answers open the way for readers to understand the ways television archives hold immense historical value for a city’s memory and what could be done and preserved before their disappearance. Originality/value This paper will be of interest to those historians, journalists, scholars and archivists, including news librarians, who are interested in learning how the ATV’s half-a-century-old archival news footage is a significant asset and cultural record to the former colony.

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“…News and media organizations must also develop an achievable plan for systematic curation of archived content. It is a critical component for creating search indexes for content, as well as determining what should be saved and why (Allen & Johnson, 2008).…”

Section: Practical Implicationsmentioning

confidence: 99%

Mediated temporal consciousness: memory and concepts of time through engagement with online news archives

Britt¹

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Archival news content no longer exists solely in physical collections at a limited number of public institutions and media organization storerooms. Instead, digitized and digital-native content of the past can be found online through multiple venues, including the venerable online video sharing site, YouTube. This research looks at how online videos of major news events within the past 10 years provide a chance to re-engage with memories of the news events and other memories connected to the time of the given news event. Through a qualitative research method known as video elicitation, the study uses semi-structured interviews with participants to look at recalled semantic and episodic memory content connected to a recent news event featured in a YouTube-based archival news video -- one regarding the 2014 Ferguson, Missouri, protests after local police shot and killed African-American teenager Michael Brown, and the other regarding the 2010 British Petroleum (BP) Deepwater Horizon oil rig explosion and underwater oil spill in the Gulf of Mexico. The study considers the characteristics and comparative states of the interview responses in building a new media concept -- mediated temporal consciousness (MTC) â€" to understand the awareness and articulation of episodic and semantic memory content associated with past news events or the time at which the person first learned of the news event. MTC is a proposed extension of presence (also known as telepresence) theory in the sense of presence as transportation; in this case, transportation from the present to past points in time coinciding with initial mediated dissemination of news events.

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Preserving digital local news

Cited by 3 publications

References 10 publications

Model-Based SEI Layer Growth and Capacity Fade Analysis for EV and PHEV Batteries and Drive Cycles

Model-Based SEI Layer Growth and Capacity Fade Analysis for EV and PHEV Batteries and Drive Cycles

The preservation of news archives: the case of Asia Television (ATV) in Hong Kong

Mediated temporal consciousness: memory and concepts of time through engagement with online news archives

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