Clock Time

2021 ◽  
pp. 29-64
Author(s):  
Clare Holdsworth
Keyword(s):  
KronoScope ◽  
2009 ◽  
Vol 8 (2) ◽  
pp. 159-178 ◽  
Author(s):  
Zara Mirmalek

AbstractThe constancy of clock time as an effective work support technology has made it almost impossible to imagine a modern organization where time, specifically standard clock time, is not a component of the organizational infrastructure. Demonstrating the degree to which clock time has become embedded within the organizational sphere are the ways in which clock time operates as though it were a natural phenomenon, rather than a human-built technology (Adam, 1990; Anderson, 1964; Bluedorn, 2002; de Grazia, 1964; Zerubavel, 1981). The naturalization of clock time within organizations is evidenced by the reified assumption technology of clock time is fixed and cannot be modified to support contextually based temporal rhythms of work. The opportunity to challenge particular notions about the relationship between time and work is found in the organization of NASA's Mars Exploration Rovers mission (MER). In addition to standard clock time, the MER mission employed an extra-terrestrial version of standard clock time, known as “Mars time,” to track the presence and absence of sunlight on Mars. Drawing on empirical data, I foreground the inadequacies of the time support technologies that led me to question the use of standard clock time as a way of ordering the experience of time on Mars. I argue that the naturalization of clock time within post-industrial organizations contributed to this occasion in which the scientific exploration of Mars was conducted according to an agrarian era temporal rhythm but for which work support was organized around an industrial era time/work relationship.


Perception ◽  
1993 ◽  
Vol 22 (1) ◽  
pp. 91-101 ◽  
Author(s):  
Dan Zakay

The validity of an attentional model of prospective time estimation was tested in three experiments. In the first experiment two variables were manipulated: (1) nontemporal information processing load during the estimated interval, and (2) time estimation method, ie production of time simultaneously with the performance of a second task, or reproduction of time immediately upon termination of a task whose duration has to be measured. As predicted, a positive relationship between produced time length and information processing load demanded by a simultaneous task, and a negative relationship between reproduced time length and information processing load during the estimated interval, were found. The results were replicated in a second experiment in which verbal estimates of time were also measured and the objective duration of the estimated interval was varied. The pattern of results obtained for verbal estimates was similar to that obtained for reproduced ones. The results of a third experiment indicated that produced and reproduced times were positively correlated with clock time. The results are interpreted as supporting an attentional model of prospective time estimation.


2018 ◽  
Vol 34 (3) ◽  
pp. 267-285 ◽  
Author(s):  
Lucie Laurian ◽  
Andy Inch

Planning seeks to shape sociospatial outcomes but is also, by nature, future oriented. Yet, planning theory and practice have paid relatively little attention to ongoing debates about changing social relations to time. Building on a wide range of disciplines, we review the multiple temporalities through which lives are lived, the modern imposition of clock time, postmodern acceleration phenomena in the Anthropocene, and their implications for planning’s relationship to the past, present, and future and for planning theory. We discuss how thinking more and differently about time might challenge and improve planning by helping theory do better justice to the complexity of practice. We conclude by outlining eight propositions for rethinking planning’s relationship to time.


eLife ◽  
2015 ◽  
Vol 4 ◽  
Author(s):  
Stephanie J Papp ◽  
Anne-Laure Huber ◽  
Sabine D Jordan ◽  
Anna Kriebs ◽  
Madelena Nguyen ◽  
...  

The circadian transcriptional repressors cryptochrome 1 (Cry1) and 2 (Cry2) evolved from photolyases, bacterial light-activated DNA repair enzymes. In this study, we report that while they have lost DNA repair activity, Cry1/2 adapted to protect genomic integrity by responding to DNA damage through posttranslational modification and coordinating the downstream transcriptional response. We demonstrate that genotoxic stress stimulates Cry1 phosphorylation and its deubiquitination by Herpes virus associated ubiquitin-specific protease (Hausp, a.k.a Usp7), stabilizing Cry1 and shifting circadian clock time. DNA damage also increases Cry2 interaction with Fbxl3, destabilizing Cry2. Thus, genotoxic stress increases the Cry1/Cry2 ratio, suggesting distinct functions for Cry1 and Cry2 following DNA damage. Indeed, the transcriptional response to genotoxic stress is enhanced in Cry1−/− and blunted in Cry2−/− cells. Furthermore, Cry2−/− cells accumulate damaged DNA. These results suggest that Cry1 and Cry2, which evolved from DNA repair enzymes, protect genomic integrity via coordinated transcriptional regulation.


1969 ◽  
Vol 20 (1) ◽  
pp. 65-69 ◽  
Author(s):  
Irwin Smith
Keyword(s):  

2018 ◽  
Vol 28 (13) ◽  
pp. 2059-2070 ◽  
Author(s):  
Anne Bendix Andersen ◽  
Kirsten Beedholm ◽  
Raymond Kolbæk ◽  
Kirsten Frederiksen

When setting up patient pathways that cross health care sectors, professionals in emergency units strive to fulfill system requirements by creating efficient patient pathways that comply with standards for length of stay. We conducted an ethnographic field study, focusing on health professionals’ collaboration, of 10 elderly patients with chronic illnesses, following them from discharge to their home or other places where they received health care services. We found that clock time not only governed the professionals’ ways of collaborating, but acceleration of patient pathways also became an overall goal in health care delivery. Professionals’ efforts to save time came to represent a “monetary value,” leading to speedier planning of patient pathways and consequent risks of disregarding important issues when treating and caring for elderly patients. We suggest that such issues are significant to the future planning and improvement of patient pathways that involve elderly citizens who are in need of intersectoral health care delivery.


Author(s):  
Fan Bu ◽  
Li-Feng Sun ◽  
Xi-Feng Ding ◽  
Yin-Jun Miao ◽  
Shi-Qiang Yang
Keyword(s):  

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