Academic literature on the topic 'Temporal Phases'
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Journal articles on the topic "Temporal Phases"
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Xu, Feng, Zhaofu Li, Shuyu Zhang, Naitao Huang, Zongyao Quan, Wenmin Zhang, Xiaojun Liu, Xiaosan Jiang, Jianjun Pan, and Alexander V. Prishchepov. "Mapping Winter Wheat with Combinations of Temporally Aggregated Sentinel-2 and Landsat-8 Data in Shandong Province, China." Remote Sensing 12, no. 12 (June 26, 2020): 2065. http://dx.doi.org/10.3390/rs12122065.
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Winter wheat is one of the major cereal crops in China. The spatial distribution of winter wheat planting areas is closely related to food security; however, mapping winter wheat with time-series finer spatial resolution satellite images across large areas is challenging. This paper explores the potential of combining temporally aggregated Landsat-8 OLI and Sentinel-2 MSI data available via the Google Earth Engine (GEE) platform for mapping winter wheat in Shandong Province, China. First, six phenological median composites of Landsat-8 OLI and Sentinel-2 MSI reflectance measures were generated by a temporal aggregation technique according to the winter wheat phenological calendar, which covered seedling, tillering, over-wintering, reviving, jointing-heading and maturing phases, respectively. Then, Random Forest (RF) classifier was used to classify multi-temporal composites but also mono-temporal winter wheat development phases and mono-sensor data. The results showed that winter wheat could be classified with an overall accuracy of 93.4% and F1 measure (the harmonic mean of producer’s and user’s accuracy) of 0.97 with temporally aggregated Landsat-8 and Sentinel-2 data were combined. As our results also revealed, it was always good to classify multi-temporal images compared to mono-temporal imagery (the overall accuracy dropped from 93.4% to as low as 76.4%). It was also good to classify Landsat-8 OLI and Sentinel-2 MSI imagery combined instead of classifying them individually. The analysis showed among the mono-temporal winter wheat development phases that the maturing phase’s and reviving phase’s data were more important than the data for other mono-temporal winter wheat development phases. In sum, this study confirmed the importance of using temporally aggregated Landsat-8 OLI and Sentinel-2 MSI data combined and identified key winter wheat development phases for accurate winter wheat classification. These results can be useful to benefit on freely available optical satellite data (Landsat-8 OLI and Sentinel-2 MSI) and prioritize key winter wheat development phases for accurate mapping winter wheat planting areas across China and elsewhere.
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Birnbaum, Marvin L., Elaine K. Daily, and Ann P. O’Rourke. "Research and Evaluations of the Health Aspects of Disasters, Part III: Framework for the Temporal Phases of Disasters." Prehospital and Disaster Medicine 30, no. 6 (November 11, 2015): 628–32. http://dx.doi.org/10.1017/s1049023x15005336.
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AbstractEach of the elements described in the Conceptual Framework for disasters has a temporal designation; each has a beginning and end time. The Temporal Framework defines these elements as phases that are based on characteristics rather than on absolute times. The six temporal phases include the: (1) Pre-event; (2) Event; (3) Structural Damage; (4) Functional Damage (changes in levels of functions of the Societal Systems); (5) Relief; and (6) Recovery phases. Development is not a phase of a disaster. The use of the Temporal Framework in studying and reporting disasters allows comparisons to be made between similar phases of different disasters, regardless of the hazard involved and/or the community impacted. For research and evaluation purposes, assessments, plans, and interventions must be described in relation to the appropriate temporal phase.BirnbaumML, DailyEK, O’RourkeAP. Research and evaluations of the health aspects of disasters, part III: framework for the temporal phases of disasters. Prehosp Disaster Med. 2015;30(6):628–632.
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Fantinato, Edy, Silvia Del Vecchio, Carlo Gaetan, and Gabriella Buffa. "The resilience of pollination interactions: importance of temporal phases." Journal of Plant Ecology 12, no. 1 (January 19, 2018): 157–62. http://dx.doi.org/10.1093/jpe/rty005.
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Calvert, Peter D., Victor I. Govardovskii, Vadim Y. Arshavsky, and Clint L. Makino. "Two Temporal Phases of Light Adaptation in Retinal Rods." Journal of General Physiology 119, no. 2 (January 17, 2002): 129–46. http://dx.doi.org/10.1085/jgp.119.2.129.
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Vertebrate rod photoreceptors adjust their sensitivity as they adapt during exposure to steady light. Light adaptation prevents the rod from saturating and significantly extends its dynamic range. We examined the time course of the onset of light adaptation in bullfrog rods and compared it with the projected onset of feedback reactions thought to underlie light adaptation on the molecular level. We found that adaptation developed in two distinct temporal phases: (1) a fast phase that operated within seconds after the onset of illumination, which is consistent with most previous reports of a 1–2-s time constant for the onset of adaptation; and (2) a slow phase that engaged over tens of seconds of continuous illumination. The fast phase desensitized the rods as much as 80-fold, and was observed at every light intensity tested. The slow phase was observed only at light intensities that suppressed more than half of the dark current. It provided an additional sensitivity loss of up to 40-fold before the rod saturated. Thus, rods achieved a total degree of adaptation of ∼3,000-fold. Although the fast adaptation is likely to originate from the well characterized Ca2+-dependent feedback mechanisms regulating the activities of several phototransduction cascade components, the molecular mechanism underlying slow adaptation is unclear. We tested the hypothesis that the slow adaptation phase is mediated by cGMP dissociation from noncatalytic binding sites on the cGMP phosphodiesterase, which has been shown to reduce the lifetime of activated phosphodiesterase in vitro. Although cGMP dissociated from the noncatalytic binding sites in intact rods with kinetics approximating that for the slow adaptation phase, this hypothesis was ruled out because the intensity of light required for cGMP dissociation far exceeded that required to evoke the slow phase. Other possible mechanisms are discussed.
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Valstar, M. F., and M. Pantic. "Fully Automatic Recognition of the Temporal Phases of Facial Actions." IEEE Transactions on Systems, Man, and Cybernetics, Part B (Cybernetics) 42, no. 1 (February 2012): 28–43. http://dx.doi.org/10.1109/tsmcb.2011.2163710.
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Abbas, Abdul-Karim, Agnès Villers, and Laurence Ris. "Temporal phases of long-term potentiation (LTP): myth or fact?" Reviews in the Neurosciences 26, no. 5 (October 1, 2015): 507–46. http://dx.doi.org/10.1515/revneuro-2014-0072.
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AbstractLong-term potentiation (LTP) remains the most widely accepted model for learning and memory. In accordance with this belief, the temporal differentiation of LTP into early and late phases is accepted as reflecting the differentiation of short-term and long-term memory. Moreover, during the past 30 years, protein synthesis inhibitors have been used to separate the early, protein synthesis-independent (E-LTP) phase and the late, protein synthesis-dependent (L-LTP) phase. However, the role of these proteins has not been formally identified. Additionally, several reports failed to show an effect of protein synthesis inhibitors on LTP. In this review, a detailed analysis of extensive behavioral and electrophysiological data reveals that the presumed correspondence of LTP temporal phases to memory phases is neither experimentally nor theoretically consistent. Moreover, an overview of the time courses of E-LTP in hippocampal slices reveals a wide variability ranging from <1 h to more than 5 h. The existence of all these conflictual findings should lead to a new vision of LTP. We believe that the E-LTP vs. L-LTP distinction, established with protein synthesis inhibitor studies, reflects a false dichotomy. We suggest that the duration of LTP and its dependency on protein synthesis are related to the availability of a set of proteins at synapses and not to the de novo synthesis of plasticity-related proteins. This availability is determined by protein turnover kinetics, which is regulated by previous and ongoing electrical activities and by energy store availability.
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Ford, Lewis S. "Temporal and Nontemporal Becoming." Process Studies 38, no. 1 (April 1, 2009): 5–42. http://dx.doi.org/10.2307/44799070.
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Abstract Whitehead’s initial decision to treat actual occasions as unqualifiedly indivisible rendered the notion of succession in becoming highly problematic. Temporal phases would divide the indivisible. Thus Whitehead had originally recourse to genetic analysis. Many have interpreted this as nontemporal becoming, which is not clearly distinguished from the eternity of eternal objects. Besides, Whitehead reserved the term ’nontemporal’ for the primordial nature. Finally Whitehead came to see that the indivisibility of occasions meant only that they could not be divided into smaller actual occasions (PR 69), which allowed for genetic division.
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Murphy, Joanne. "Tracking change in Northern Ireland policing: temporal phases and key themes." Policing: An International Journal of Police Strategies & Management 38, no. 1 (March 16, 2015): 117–31. http://dx.doi.org/10.1108/pijpsm-10-2014-0106.
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Purpose – The purpose of this paper is to explore and explain the change process in Northern Ireland policing through an analysis of temporally bracketed change phases and key change delivery themes ranging from 1996 to 2012. Design/methodology/approach – The research approach adopted is process based, longitudinal and multi-method, utilising “temporal bracketing” to determine phases of change and conjunctural reasoning to unravel the systematic factors interacting over time, within the case. Findings – The paper identifies and temporally brackets four phases of change: “Tipping point”; “Implementation, Symbolic Modification and Resistance”; “Power Assisted Steering”; and “A Return to Turbulence”, identifies four themes that emerge from RUC-PSNI experience: the role of adaptive leadership; pace and sequencing of change implementation; sufficient resourcing; and the impact of external agents acting as boundary spanners, and comments on the prominence of these themes through the phases. The paper goes on to reflect upon how these phases and themes inform our understanding of organisational change within policing organisations generally and within politically pressurised transition processes. Originality/value – The contribution of the paper lies in the documentation of an almost unique organisational case in an environmentally forced change process. In this it contains lessons for other organisations facing similar, if less extreme challenges and presents an example of intense change analysed longitudinally.
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Xu, Datao, Xuanzhen Cen, Meizi Wang, Ming Rong, Bíró István, Julien S. Baker, and Yaodong Gu. "Temporal Kinematic Differences between Forward and Backward Jump-Landing." International Journal of Environmental Research and Public Health 17, no. 18 (September 13, 2020): 6669. http://dx.doi.org/10.3390/ijerph17186669.
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Backward jump-landing during sports performance will result in dynamic postural instability with a greater risk of injury, and most research studies have focused on forward landing. Differences in kinematic temporal characteristics between single-leg and double-leg backward jump-landing are seldom researched and understood. The purpose of this study was to compare and analyze lower extremity kinematic differences throughout the landing phases of forward and backward jumping using single-leg and double-leg landings (FS and BS, FD and BD). Kinematic data were collected during the landing phases of FS and BS, FD and BD in 45 participants. Through statistical parametric mapping (SPM) analysis, we found that the BS showed smaller hip and knee flexion and greater vertical ground reactive force (VGRF) than the FS during 0–37.42% (p = 0.031), 16.07–32.11% (p = 0.045), and 23.03–17.32% (p = 0.041) landing phases. The BD showed smaller hip and knee flexion than the FD during 0–20.66% (p = 0.047) and 0–100% (p < 0.001) landing phases. Most differences appeared within a time frame during the landing phase at 30–50 ms in which non-contact anterior cruciate ligament (ACL) injuries are thought to occur and are consistent with the identification of risk in biomechanical analysis. A landing strategy that consciously increases the knee and hip flexion angles during backward landing should be considered for people as a measure to avoid injury during the performance of this type of physical activity.
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KILAVIK, BJØRG ELISABETH, and JAN KREMERS. "Interactions between rod and L-cone signals in deuteranopes: Gains and phases." Visual Neuroscience 23, no. 2 (March 2006): 201–7. http://dx.doi.org/10.1017/s095252380623205x.
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The dynamics of interactions between rod and L-cone driven signals were studied psychophysically in two deuteranopic observers. Flicker detection thresholds for different ratios of rod to L-cone modulation were measured at temporal frequencies between 1 and 15 Hz. A model, which assumes that rod and L-cone driven signals are vector added, can describe the threshold data adequately. We found that up to about 8–10 Hz temporal frequency, rod and L-cone signals interact additively, whereas at higher frequencies the interaction is subtractive. Rod and L-cone signal strengths depend similarly on temporal frequency and are maximal between 3 and 5 Hz. The phase difference between rod and L-cone signals increases linearly with temporal frequency, indicating that their responses have a delay difference of about 20 to 30 ms, consistent with involvement of the faster rod pathway. The data would suggest a nearly complete additivity of the rod and cone driven signals when using flashed stimuli. But, literature data showed only partial additivity of the two, suggesting that different postreceptoral mechanisms are involved in the two tasks.
Dissertations / Theses on the topic "Temporal Phases"
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Read, Ann L. "A detailed analysis of the temporal phases of the timed Up & Go test." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0017/MQ49430.pdf.
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Ihle, Tilo. "Die raum-zeitliche Variation von Microcystis spp. (Cyanophyceae) und Microcystinen in der Talsperre Quitzdorf (Sachsen)." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2008. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1214480543195-41264.
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Cyanobakterien bilden zahlreiche bioaktive Substanzen mit zum Teil humantoxischer Relevanz. Nicht selten spielen dabei zyklische Peptide, zu denen unter anderem die Microcystine (MCYST) gehören, eine Schlüsselrolle. MCYST werden u.a. von Microcystis KÜTZING EX LEMMERMANN 1907 gebildet. Erkenntnisse zur ökophysiologischen Funktion der MCYST, die zweifelsfrei bei den Produzenten selbst zu suchen ist, liegen bisher kaum vor. Mit Hilfe von Freilanduntersuchungen sollten im Rahmen der vorliegenden Arbeit Kenntnisse zu einer möglichen ökologischen Funktion der MCYST erweitert und vertieft werden. Grundlage stellte dabei die Phänologie von Microcystis als einer der bedeutendsten limnischen MCYST-Produzenten dar. Microcystis zeigt im Freiland einen charakteristischen annuellen Lebenszyklus mit benthisch-pelagischer Kopplung. Ziel der vorliegenden Arbeit war es, die phänologischen Phasen des Lebenszyklus von Microcystis im Freiland zu differenzieren sowie die Dynamik der MCYST während dieser Phasen kompartimentübergreifend gesamtheitlich zu erfassen. Über eine MCYST-Massenbilanzierung sollen anschließend die dem annuellen Zyklus zugrundeliegenden Teilprozesse quantifiziert und zusammengeführt werden. Vordergründiges Anliegen war es, Phasen einzugrenzen, bei denen MCYST möglicherweise eine ökophysiologische Funktion haben könnte. Der annuelle Lebenszyklus von Microcystis wurde anhand von Biomasseänderungen am Sediment und im Pelagial der TS Quitzdorf in die phänologischen Phasen Überwinterung, Reinvasion, pelagisches Wachstum und Sedimentation unterteilt: Intakte, im Herbst aus dem Freiwasser aussedimentierte, Microcystis-Kolonien überwintern am Sediment und steigen im Frühjahr und Frühsommer zurück ins Freiwasser auf. Dort erfolgt der Wachstumsprozess, dem sich im darauffolgenden Herbst erneut ein Zusammenbruch und die Sedimentation der Freiwassergemeinschaft anschließt. Die benthisch-pelagische Kopplung wirkt dabei als interannuelles Bindeglied. Zwischen dem annuellen Lebenszyklus von Microcystis und der MCYST-Dynamik wurde eine enge Bindung nachgewiesen: Änderungen der absoluten MCYST-Konzentrationen während der Übergangsphasen Aufstieg (Frühjahr) und Sedimentation (Herbst) zeigen, dass MCYST mit den aufsteigenden bzw. aussedimentierenden Microcystis-Kolonien aus dem bzw. in das Sediment ‚transportiert’ werden. Ausschließlich während der pelagischen Phase, die sich dem Reinvasionsprozess anschließt, kommt es in Abhängigkeit vom Wachstum der Produzenten und deren Sukzession zur Neubildung von MCYST. Während den Wintermonaten wurden MCYST am Sediment intrazellulär ‚konserviert’. Der Verlauf der pelagischen MCYST-Konzentration wurde mit Hilfe eines Wachstumsmodells nachgebildet. In dieses Modell wurde die genetische Variabilität der MCYST-Produzenten sowie eine mögliche physiologische Steuerung der MCYST-Synthese über die Verfügbarkeit des anorganischen Kohlenstoffs integriert. Der prinzipielle Verlauf zeigte dabei weitestgehend Koinzidenz zwischen den real gemessenen und den simulierten MCYST-Konzentrationswerten. Abweichungen zwischen beiden konnten mit Hilfe des gesamtheitlich kompartimentübergreifenden MCYST-Bilanzierungsansatzes – in erster Linie über benthisch-pelagische Kopplungsprozesse – plausibel erklärt werden. Der Habitatwechsel ist für Microcystis prinzipiell mit Verlusten (Seneszenz/Lyse oder möglicherweise Apoptose) verbunden, sowohl für MCYST-Produzenten und Nichtproduzenten. Die auffallende Stabilität der benthischen MCYST-Zellquote während der Überwinterung gibt Grund zur Annahme, dass eine Funktion von MCYST am/im Sediment eher unwahrscheinlich ist. Da MCYST über derart lange Zeiträume am Sediment intrazellulär ‚konserviert’ werden, ist eine Bedeutung der MCYST während der Reinvasionsphase und in der frühen pelagischen Phase nicht auszuschließen. Im Speziellen wurde eine mögliche ökologische Funktion von MCYST in Zusammenhang mit der Variation der Koloniegröße bzw. dem epiphytischen Bewuchs von Microcystis-Kolonien mit Pseudanabaena mucicola geprüft: Aus dem Zusammenhang zwischen extra-/intrazellulärer MCYST-Konzentration und der Microcystis-Koloniegrößenverteilung waren keine konsistenten Schlussfolgerungen abzuleiten, welche auf eine Steuerung der Koloniebildung durch MCYST deuten. Vor dem Hintergrund, dass MCYST keinen nachweislich allelopathischen Effekt auf den Epibionten Pseudanabaena mucicola ausüben, wurde postuliert, dass zwischen dem beobachteten epiphytischen Besiedlungs-/Verteilungsmuster und der MCYST-Produktion ein indirekter Zusammenhang besteht, welcher die zeitweise Einnischung von Pseudanabaena mucicola auf Microcystis-Kolonien ermöglicht. Die Ergebnisse der vorliegenden Untersuchung lassen weder unmittelbar noch mittelbar eine Variabilität der ökophysiologischen Bedeutung von MCYST, die im Zusammenhang mit der raum-zeitlichen Verteilung potentieller Produzenten steht, erkennen. Eine divergierende Funktion der MCYST auf intra- bzw. extrazellulärer Ebene kann nicht zwingend ausgeschlossen werden. Die Mehrzahl der aus der MCYST-Phänologie und MCYST-Bilanzierung abzuleitenden Schlussfolgerungen deutet allerdings eher auf eine Funktion auf (intra-)zellulärer Ebene hin, wie etwa die Effizienzsteigerung des Kohlenstoffmetabolismus (d.h. der intrazellulä-ren Akkumulation anorganischen Kohlenstoffs) während der pelagischen (Wachstums-)Phase der Produzenten.
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Olsson, Kasper Lundell, and Sebastian Pehrson. "Exploratory study - Outlining the temporal structure of the transition from junior-to-senior level in Swedish ice hockey : Phases in the junior-to-senior transition." Thesis, Högskolan i Halmstad, Sektionen för hälsa och samhälle (HOS), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-25307.
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This exploratory, qualitative study focuses on the transition from junior-to-senior sports. The purpose of the study was to outline the temporal structure of this transition. The aim was to do this by achieving the following three objectives: (1) to develop a working model showing transitional phases in the transition from junior-to-senior sports, (2) to examine demands, resources, barriers, coping strategies, and outcomes within each of the four transitional phases in the working model, (3) to validate the working model through external validation, i.e. through asking the study’s participants for their opinion on the model. There were 10 male participants in this study consisting of active ice hockey players, ice hockey coaches, and a former ice hockey player; preparation phase (n=1), orientation phase (n=1), stabilization phase (n=5), junior coach (n=1), senior coach (n=1), dropout (n=1). Seven instruments were used in this study, including six interview guides and one working model. Initially a working model, depicting four transitional phases, was developed, based on theoretical frameworks and personal experience. A total of 949 raw data units were extracted from the interviews, categorized as either demands, resources, barriers, coping strategies, or outcomes within a transitional phase, and then arranged into category profiles representing each transitional phase in the working model. Furthermore, an empirical model was developed based on the working model and the category profiles. The results are, among other things, discussed in relation to theoretical frameworks and previous research.Denna undersökande, kvalitativa studie fokuserar på övergången från junior-till-senioridrott. Syftet med studien var att kartlägga denna övergångs tidsmässiga struktur. Målet var att göra detta genom att uppfylla följande tre delmål: (1) att utveckla en arbetsmodell som visar transaktionella faser i övergången från junior-till-senior idrott, (2) att undersöka krav, resurser, barriärer, coping strategier och utfall inom var och en av de fyra transaktionella faserna i arbetsmodellen, (3) att validera arbetsmodellen genom extern validering, d.v.s. genom att fråga studiens deltagare om deras åsikter kring modellen. Det var 10 manliga deltagare i denna studie bestående av aktiva hockeyspelare, hockeytränare och en föredetta hockeyspelare; förberedelsefasen (n=1), orienteringsfasen (n=1), stabiliseringsfasen (n=5), junior tränare (n=1), senior tränare (n=1), dropout (n=1). Sju instrument användes i studien; sex intervjuguider och en arbetsmodell. Inledningsvis utvecklades en arbetsmodell, föreställande fyra transaktionella faser, baserad på teoretiska ramverk och personlig erfarenhet. Totalt extraherades 949 rådata från intervjuerna, som sedan kategoriserades som antingen krav, resurser, barriärer, coping strategier eller utfall inom en transaktionell fas, och därefter ordnades de i kategoriprofiler som representerar varje transaktionella fas i arbetsmodellen. Vidare utvecklades en empirisk modell baserad på arbetsmodellen och kategoriprofilerna. Resultatet diskuteras bl.a. i relation till teoretiska ramverk och tidigare forskning.
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Ihle, Tilo. "Die raum-zeitliche Variation von Microcystis spp. (Cyanophyceae) und Microcystinen in der Talsperre Quitzdorf (Sachsen)." Doctoral thesis, Technische Universität Dresden, 2007. https://tud.qucosa.de/id/qucosa%3A23893.
Full textAbstract:
Cyanobakterien bilden zahlreiche bioaktive Substanzen mit zum Teil humantoxischer Relevanz. Nicht selten spielen dabei zyklische Peptide, zu denen unter anderem die Microcystine (MCYST) gehören, eine Schlüsselrolle. MCYST werden u.a. von Microcystis KÜTZING EX LEMMERMANN 1907 gebildet. Erkenntnisse zur ökophysiologischen Funktion der MCYST, die zweifelsfrei bei den Produzenten selbst zu suchen ist, liegen bisher kaum vor. Mit Hilfe von Freilanduntersuchungen sollten im Rahmen der vorliegenden Arbeit Kenntnisse zu einer möglichen ökologischen Funktion der MCYST erweitert und vertieft werden. Grundlage stellte dabei die Phänologie von Microcystis als einer der bedeutendsten limnischen MCYST-Produzenten dar. Microcystis zeigt im Freiland einen charakteristischen annuellen Lebenszyklus mit benthisch-pelagischer Kopplung. Ziel der vorliegenden Arbeit war es, die phänologischen Phasen des Lebenszyklus von Microcystis im Freiland zu differenzieren sowie die Dynamik der MCYST während dieser Phasen kompartimentübergreifend gesamtheitlich zu erfassen. Über eine MCYST-Massenbilanzierung sollen anschließend die dem annuellen Zyklus zugrundeliegenden Teilprozesse quantifiziert und zusammengeführt werden. Vordergründiges Anliegen war es, Phasen einzugrenzen, bei denen MCYST möglicherweise eine ökophysiologische Funktion haben könnte. Der annuelle Lebenszyklus von Microcystis wurde anhand von Biomasseänderungen am Sediment und im Pelagial der TS Quitzdorf in die phänologischen Phasen Überwinterung, Reinvasion, pelagisches Wachstum und Sedimentation unterteilt: Intakte, im Herbst aus dem Freiwasser aussedimentierte, Microcystis-Kolonien überwintern am Sediment und steigen im Frühjahr und Frühsommer zurück ins Freiwasser auf. Dort erfolgt der Wachstumsprozess, dem sich im darauffolgenden Herbst erneut ein Zusammenbruch und die Sedimentation der Freiwassergemeinschaft anschließt. Die benthisch-pelagische Kopplung wirkt dabei als interannuelles Bindeglied. Zwischen dem annuellen Lebenszyklus von Microcystis und der MCYST-Dynamik wurde eine enge Bindung nachgewiesen: Änderungen der absoluten MCYST-Konzentrationen während der Übergangsphasen Aufstieg (Frühjahr) und Sedimentation (Herbst) zeigen, dass MCYST mit den aufsteigenden bzw. aussedimentierenden Microcystis-Kolonien aus dem bzw. in das Sediment ‚transportiert’ werden. Ausschließlich während der pelagischen Phase, die sich dem Reinvasionsprozess anschließt, kommt es in Abhängigkeit vom Wachstum der Produzenten und deren Sukzession zur Neubildung von MCYST. Während den Wintermonaten wurden MCYST am Sediment intrazellulär ‚konserviert’. Der Verlauf der pelagischen MCYST-Konzentration wurde mit Hilfe eines Wachstumsmodells nachgebildet. In dieses Modell wurde die genetische Variabilität der MCYST-Produzenten sowie eine mögliche physiologische Steuerung der MCYST-Synthese über die Verfügbarkeit des anorganischen Kohlenstoffs integriert. Der prinzipielle Verlauf zeigte dabei weitestgehend Koinzidenz zwischen den real gemessenen und den simulierten MCYST-Konzentrationswerten. Abweichungen zwischen beiden konnten mit Hilfe des gesamtheitlich kompartimentübergreifenden MCYST-Bilanzierungsansatzes – in erster Linie über benthisch-pelagische Kopplungsprozesse – plausibel erklärt werden. Der Habitatwechsel ist für Microcystis prinzipiell mit Verlusten (Seneszenz/Lyse oder möglicherweise Apoptose) verbunden, sowohl für MCYST-Produzenten und Nichtproduzenten. Die auffallende Stabilität der benthischen MCYST-Zellquote während der Überwinterung gibt Grund zur Annahme, dass eine Funktion von MCYST am/im Sediment eher unwahrscheinlich ist. Da MCYST über derart lange Zeiträume am Sediment intrazellulär ‚konserviert’ werden, ist eine Bedeutung der MCYST während der Reinvasionsphase und in der frühen pelagischen Phase nicht auszuschließen. Im Speziellen wurde eine mögliche ökologische Funktion von MCYST in Zusammenhang mit der Variation der Koloniegröße bzw. dem epiphytischen Bewuchs von Microcystis-Kolonien mit Pseudanabaena mucicola geprüft: Aus dem Zusammenhang zwischen extra-/intrazellulärer MCYST-Konzentration und der Microcystis-Koloniegrößenverteilung waren keine konsistenten Schlussfolgerungen abzuleiten, welche auf eine Steuerung der Koloniebildung durch MCYST deuten. Vor dem Hintergrund, dass MCYST keinen nachweislich allelopathischen Effekt auf den Epibionten Pseudanabaena mucicola ausüben, wurde postuliert, dass zwischen dem beobachteten epiphytischen Besiedlungs-/Verteilungsmuster und der MCYST-Produktion ein indirekter Zusammenhang besteht, welcher die zeitweise Einnischung von Pseudanabaena mucicola auf Microcystis-Kolonien ermöglicht. Die Ergebnisse der vorliegenden Untersuchung lassen weder unmittelbar noch mittelbar eine Variabilität der ökophysiologischen Bedeutung von MCYST, die im Zusammenhang mit der raum-zeitlichen Verteilung potentieller Produzenten steht, erkennen. Eine divergierende Funktion der MCYST auf intra- bzw. extrazellulärer Ebene kann nicht zwingend ausgeschlossen werden. Die Mehrzahl der aus der MCYST-Phänologie und MCYST-Bilanzierung abzuleitenden Schlussfolgerungen deutet allerdings eher auf eine Funktion auf (intra-)zellulärer Ebene hin, wie etwa die Effizienzsteigerung des Kohlenstoffmetabolismus (d.h. der intrazellulä-ren Akkumulation anorganischen Kohlenstoffs) während der pelagischen (Wachstums-)Phase der Produzenten.
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El, mouayni Ismail. "Développement d'une méthode outillée pour l'amélioration des aspects santé-sécurité dès les premières phases de la conception des systèmes de production par la prise en compte des marges de manœuvre temporelles." Thesis, Paris, ENSAM, 2017. http://www.theses.fr/2017ENAM0042/document.
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Les systèmes de production actuels sont soumis à des contraintes de réactivité et de productivité. Par conséquent, les variabilités du flux physique sont de plus en plus prononcées. Ces variabilités s’amplifient en raison d’un ensemble de facteurs humains. Elles impactent la productivité et peuvent donner lieu à des facteurs de risque qui peuvent contribuer dans la genèse des maladies professionnelles. Par conséquent, les systèmes de production doivent offrir la flexibilité nécessaire afin de mieux amortir cette variabilité et en particulier, son incidence sur l’opérateur. Dans ce contexte, ces travaux de thèse proposent une approche pour instaurer la flexibilité temporelle nécessaire dans un système de production : les marges de manœuvre temporelles. Ce travail décrit le développement d’un outil permettant de simuler un système afin d’évaluer son comportement. L’outil développé est baptisé AEN-PRO : Agent based ENgine for PROduction system simulation. Ces travaux proposent également la définition d’un indicateur permettant de mesurer les marges de manœuvre temporelles disponibles sur un poste de travail. L’analyse par états élémentaires est aussi proposée pour évaluer le comportement des entités du système afin de proposer des modifications de la conception qui améliorent les marges de manœuvre et la productivité du systèmeToday's production systems are subject to reactivity and productivity constraints. Consequently, variability in the physical flow are increasingly pronounced. This variability affects productivity and may contribute to occupational diseases through different kind of risk factors. Therefore, production systems must have the needed flexibility to better cushion this variability and its impact on workers. In this context, this article proposes a tooled approach to establish temporal flexibility in production system: temporal margins of maneuver. The developed tool is used to simulate a production system and assess its behavior with respect to variability. This work also proposes the definition of an indicator to measure the temporal margins of maneuver in the simulated system. Elementary states analysis is proposed to evaluate the behavior of the system’s entities. This analysis leads to improvements that aim to enhance the temporal margins of maneuver and the productivity of the system as well
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Sy, Mouhamadou. "Etude par microscopie optique des comportements spatio-temporels thermo- et photo-induits et de l’auto-organisation dans les monocristaux à transition de spin." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLV032/document.
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Ce travail de thèse est dédié à la visualisation par microscopie optique des transitions de phases, thermo- et photo-induites dans des monocristaux à transition de spin. L’étude des cristaux du composé [{Fe(NCSe)(py)2}2(m-bpypz)] a permis de montrer la possibilité de contrôler la dynamique de l’interface HS/BS (haut spin/bas spin) par une irradiation lumineuse appliquée sur toute la surface du cristal ou de manière localisée. Les investigations expérimentales menées sur l’effet de l’intensité de la lumière sur la température de transition ont mis en évidence d’une part l’importance du couplage entre le cristal et le bain thermique, et d’autre part le rôle de la diffusion de la chaleur dans le monocristal. En parallèle, un modèle basé sur une description de type Ginzburg-Landau, a permis de mettre sur pied une description de type réaction diffusion des effets spatio-temporels accompagnant la transition de spin dans un monocristal. Celui-ci a permis d’identifier et de comprendre le rôle des paramètres pertinents entrant en jeu dans le contrôle du mouvement de l’interface HS/BS. Les résultats obtenus sont très encourageants et reproduisent avec une grande fidélité les données expérimentales. Cependant l’origine de l’orientation de l’interface HS/BS observée par microscopie optique dans les cristaux du composé [{Fe(NCSe)(py)2}2(m-bpypz)] était restée mystérieuse. Pour résoudre cette question, nous avons développé un modèle électro-élastique qui tient compte du changement de volume au cours de la transition de spin. Ce dernier nous a conduits à analyser l’effet de la symétrie du réseau cristallin et de la forme du cristal sur l’orientation de l’interface élastique. En l’appliquant au composé [{Fe(NCSe)(py)2}2(m-bpypz)], en tenant compte du caractère anisotrope du changement de la maille élémentaire lors du passage HSBS, nous avons réussi à retrouver quantitativement l’orientation du front observée expérimentalement en microscopie optique. Ceci confirme bien le rôle primordial de l’élasticité dans le comportement des matériaux à transition de spin. Des études sous lumière à très basse température nous ont donné la possibilité de suivre en temps réel, l’effet LIESST (Light Induced Excited Spin State Trapping), la re-laxation coopérative du cristal ainsi que l’instabilité photo-induite LITH (Light Induced Thermal Hysteresis). Un monde fascinant est apparu autour de cette dernière, avec la présence de comportements totalement inédits. Ainsi, et pour la première fois, nous avons mis en évidence l’existence de phénomènes d’auto-organisation et de comportements autocatalytiques du front de transition. Cette physique non-linéaire dénote un comportement actif du cristal, par suite d’une subtile préparation autour d’un état instable. Ces comportements rappellent les structures dissipatives de Turing et ouvrent des perspectives fascinantes pour cette thématique, tant sur le plan expérimental que théoriqueThis thesis work is devoted to visualization by optical microscopy of thermo- and photo-induced phase transitions, in switchable spin transition single crystals. The study of crystals of the compound [{Fe (NCSe) (py) 2} 2 (m-bpypz)] showed the possibility to control reversibly the dynamics of the HS/LS interface through a photo-thermal effect generated by an irradiation of the whole crystal or using a spatially localized light spot on the crystal surface. The investigations of the effect of the light intensity on the transition temperature have highlighted the importance of the coupling between the crystal and the thermal bath in these experiments. Concomitantly, we developped a reaction diffusion model allowing to describe and iden-tify the relevant physical parameters involved in the control of the movement of HS/LS interface. The obtained results are very encouraging and reproduce the main features of the experimental data. However the origin of the interface orientation observed by the optical microscopy in the crystal of the compound [{Fe (NCSe) (py) 2} 2 (m-bpypz)] re-mained mysterious, and needed an elastic approach to be handled. At this end, an electro-elastic model including the volume change at the spin transition was developed. By taking into account for the anisotropy of the unit cell deformation at the transition, we were able to reproduce quantitatively the experimental HS/LS interface orientation. This result confirms the crucial role of the lattice symmetry and its elastic properties in the emergence of a stable interface orientation. The last part of the thesis is devoted to the investigation of photo-induced effects at very low temperatures (~10K). There, we visualized for the first time the real time transformation of a single crystal under LIESST (Light Induced Excited Spin State Trapping) effect as well as its subsequent relaxation at higher temperatures. We have also studied the light induced instabilities through investigation on the LITH (Light Induced Thermal Hysteresis) loops. Around the latter, a fascinating world made of nonlinear effects, and patterns formation emerged, recalled the well known Turing structures. These results lead to new horizons that will give access to new theories and original experimental observations that will enrich the topics opening the new avenues to study of nonlinear phenomena in spin crossover solids
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Kinell, Lars. "Shape measurements using temporal phase unwrapping." Licentiate thesis, Luleå tekniska universitet, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-25651.
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This licentiate thesis is devoted to shape measurements using two different optical methods. The first one is a classical triangulation method, which uses projected fringes. The second one is a new interferometric method, which uses wavelength scanning. Both are whole field measuring methods. The main goal of the project has been to analyse the performance of an analysis scheme for absolute shape measurements called temporal phase unwrapping. This method permits the user to determine the absolute distance from the detector (usually a CCD-detector) to the object. A generalised version of the temporal phase unwrapping scheme is called reduced temporal phase unwrapping. The scheme uses an arbitrary number of fringe maps with varied fringe pitch, to calculate phase (shape). A thorough investigation is made of the performance of this algorithm. A single channel and a multi channel approach is considered. Expressions are found that relates the physical quantities to phase errors. In these simulations the single channel approach was found to be the most robust one. Expressions that relate the measurement accuracy and the unwrapping reliability, respectively, to the reduction of the fringe sequence were also found. As expected the measurement accuracy is not affected by a shorter fringe sequence while a significant reduction in the unwrapping reliability is found, as compared to the complete negative exponential sequence. The strength of reduced temporal phase unwrapping is demonstrated experimentally, in a projected fringe three-channel system. Instead of letting each channel carry phase-stepped images each channel can carry images with a change in fringe pitch. This significantly reduces noise, but at least three images needs to be acquired. It is also shown that the temporal phase unwrapping analysis scheme can be used to evaluate experimental data from wavelength scanning interferometry. Two unwrapping strategies are considered: fitting to a reversed exponential sequence and complex Fourier-transform ranging. The achievable accuracy for both methods ultimately depend on the tuning width, the speckle correlation, and random noise in the optical setup.Godkänd; 2000; 20070318 (ysko)
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Kinell, Lars. "Optical shape measurements using temporal phase unwrapping /." Luleå, 2003. http://epubl.luth.se/1402-1544/2003/31/index.html.
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Goldstein, Goldie L. "Smart Temporal Phase Unwrapping for Biological Objects." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/311573.
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The development of a quantitative phase microscope (QPM) has allowed the ability to acquire real-time phase movies of biological processes. The image processing of the data is critical to the system's ability to measure relative changes. The phase data must be consistent throughout a measurement and background fluctuations must be minimized. The research presented in this work discusses methods to effectively process sequences of phase data such that it can be used to quantify changes within real-time studies of living cells. This work begins by exploring two-dimensional phase unwrapping to determine the most effective ways to estimate the measured phase surface. Conventional methods of comparing unwrapping performance will be used. In addition, a novel method will be introduced that can characterize accuracy using continuity of derivatives. It will be shown that the most accurate phase estimates are made using modulation data with quality-guided phase unwrapping. After two-dimensionally unwrapping all frames of data within a measurement, there are background fluctuations due to residual surface shape as well as mean phase value fluctuations. Traditionally, manual background removal methods are implemented. Due to the large streams of data that need to be analyzed for the QPM, an automated background removal method is introduced that automatically discriminates the background from features of interest and characterizes and removes the background shape from all frames within a sequence of data. No user intervention is required and the performance rivals manual methods. The final step in processing data from a QPM is to ensure consistent phase unwrapping over an entire dataset. This is a previously undiscussed topic within the field of quantitative phase microscopy. The two-dimensional phase unwrapping methods result in reasonable phase estimates of the measured sample however there are often inconsistencies in local regions amongst sequential frames of data. This work introduces a new method, Smart Temporal unwrapping that minimizes temporal inconsistencies. The image processing methods presented in this work combine to allow phase data acquired using a QPM to quantify relative changes in biological samples. These processing steps effectively minimize errors due to system vibration, residual measurement aberration, and phase unwrapping inconsistencies.
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Wright, Dean. "Temporal phase and amplitude statistics in coherent radiation." Thesis, University of Nottingham, 2005. http://eprints.nottingham.ac.uk/12126/.
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Interest in coherent remote sensing systems has stimulated investigations in the properties laser propagation through extended atmospheric turbulence. This thesis investigates the statistics of phase, and phase related, observables using analytical and computational techniques, together with experimental results. The phase screen technique is used to simulate perturbations to the refractive index of a medium through which the radiation propagates. Several different turbulence models (Gaussian correlated noise, Kolmogorov turbulence, Tatarski and Von Karman spectral models) are investigated, and their relative merits for describing experimental conditions and descriptive statistical measures are compared and contrasted. The phase power spectrum is crucial to an understanding of the practical operation of a coherent imaging system, and later part of the thesis is devoted to the investigation of a LIDAR system in particular. Several turbulence regimes are investigated, from an analytical treatment of a weakly turbulent, extended atmosphere, to large 3D computations designed to simulate experimental arrangements. The 3D simulation technique presented herein has been developed to allow for the investigation of temporal statistics. New power law behaviours are found to appear in temporal frequency spectra which differ from the -8/3 power law form that has been accepted in much of the literature. Strongly turbulent regimes result in a -2 power law while the use of a Gaussian beam profile in an extended medium gives a -11/3 power law under weak turbulence conditions. Please note: Pagination in electronic reproduction differs from print original. The print version is the version of record.
Books on the topic "Temporal Phases"
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Åhas, Rein. Spatial and temporal variability of phenological phases in Estonia. Tartu: Tartu University Press, 1999.
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Surkova, Galina. Atmospheric chemistry. ru: INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/1079840.
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The textbook contains material corresponding to the course of lectures on atmospheric chemistry prepared for students studying meteorology and climatology. The basic concepts of atmospheric chemistry are given, its gaseous components, as well as aerosols and chemical processes related to their life cycles, which are important from the point of view of the formation of the radiation, temperature and dynamic regime of the atmosphere, as well as its pollution, are considered. The main regularities of the transport of impurities in the atmosphere and the role of processes of different spatial and temporal scales in this process are presented. The concept of approaches of varying degrees of complexity used to model the transport of matter in the atmosphere, taking into account its chemical transformations, is presented. The processes in the gaseous and liquid phases that affect the chemical composition and acidity of clouds and precipitation are described. Modern methods of using information about the concentration and state of chemical compounds, including their radioactive and stable isotopes, to obtain information about the meteorological regime of the atmosphere in the present and past are considered.
Meets the requirements of the federal state educational standards of higher education of the latest generation.
For students of higher educational institutions studying in the field of training "Hydrometeorology".
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Sim, Edmund Joseph. The application of monaural phase sensitivity testing to the study of temporally-based hearing mechanisms. Ottawa: National Library of Canada, 1991.
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Mazo, Aleksandr, and Konstantin Potashev. The superelements. Modeling of oil fields development. ru: INFRA-M Academic Publishing LLC., 2020. http://dx.doi.org/10.12737/1043236.
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This monograph presents the basics of super-element modeling method of two-phase fluid flows occurring during the development of oil reservoir. The simulation is performed in two stages to reduce the spatial and temporal scales of the studied processes. In the first stage of modeling of development of oil deposits built long-term (for decades) the model of the global dynamics of the flooding on the super-element computational grid with a step equal to the average distance between wells (200-500 m). Local filtration flow, caused by the action of geological and technical methods of stimulation, are modeled in the second stage using a special mathematical models using computational grids with high resolution detail for the space of from 0.1 to 10 m and time — from 102 to 105 C.
The results of application of the presented models to the solution of practical tasks of development of oil reservoir. Special attention is paid to the issue of value transfer in filtration-capacitive properties of the reservoir, with a detailed grid of the geological model on the larger grid reservoir models.
Designed for professionals in the field of mathematical and numerical modeling of fluid flows occurring during the development of oil fields and using traditional commercial software packages, as well as developing their own software. May be of interest to undergraduate and graduate students studying in areas such as "Mechanics and mathematical modeling", "Applied mathematics", "Oil and gas".
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Birkenholtz, Jessica Vantine. The Making of Modern Hinduism in Medieval Nepal. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780199341160.003.0004.
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Chapter 4 focuses on the first two of three key phases in the development of the Svasthānīvratakathā textual-narrative tradition in which select stories culled from the Sanskrit Purāna corpus were woven into the “original” fabric of the Svasthānī narrative. The beginning of the text’s Purānicization, or transformation from local vrat kathā to authoritative Purāna text, occurred between the mid-eighteenth and early nineteenth century. It is during this period that the Svasthānīvratakathā domesticated the Shiva-Satī Devī-Daksha Prajāpati narrative cycle and the Madhu-Kaitabha creation story. These narratives expanded the geographical, temporal, and ideological parameters of the Svasthānī tradition in a manner that articulated and reinforced Nepal’s emergent identity as a united Hindu kingdom.
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Sedelmeier, Ulrich. 17. Enlargement. Oxford University Press, 2017. http://dx.doi.org/10.1093/hepl/9780199689675.003.0017.
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This chapter examines the main phases of the European Union’s enlargement policy process — association, pre-accession, and accession — and the key decisions involved in each of these stages, how they are made, and how policy practice has evolved over time. It first considers the EU rules, procedures, and policy for the accession of new members before discussing association agreements, a long-standing instrument for the EU’s external relations: these include the European Economic Area agreement, Europe agreements, and stabilization and association agreements. It then explores enlargement as a tool of foreign policy and external governance as well as the development of the EU’s accession conditionality. It concludes with an assessment of the EU’s ‘enlargement fatigue’ after the 2007 enlargement and the limits of the success of accession conditionality, both temporal and geographical.
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Eiselt, B. Sunday. Vecino Archaeology and the Politics of Play in New Mexico, USA. Edited by Sally Crawford, Dawn M. Hadley, and Gillian Shepherd. Oxford University Press, 2018. http://dx.doi.org/10.1093/oxfordhb/9780199670697.013.21.
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In the discussion that follows, I explore the effects of modernity on Hispano (Vecino) children on the Ranchos de Taos Plaza in northern New Mexico (United States of America) from the late 1800s American invasion of the Southwest up to the present infiltration of the village by tourists and travellers. Data are derived from archaeological excavations and survey at two households in the St Francis of Assisi Parish that have been continuously occupied by one extended family, the Tafoyas, for more than a century. The temporal distributions of toys and other childcare products are charted and related to major social changes in the village over four successive phases; Village, Vintage, Retro, and Contemporary. The potential influence of globalization and modernity on children’s lives and identities is revealed within the context of this largely indigenous and Spanish-speaking community.
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Peters, Alan R. Oliver & Daniel - Return to Netherworld: The Temporal Phase Shift Adjuster. CreateSpace Independent Publishing Platform, 2012.
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Sterelny, Kim. The Pleistocene Social Contract. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780197531389.001.0001.
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No human now gathers for himself or herself the essential resources for life: food, shelter, clothing and the like. Humans are obligate co-operators, and this has been true for tens of thousands of years; probably much longer. In this regard, humans are very unusual. In the living world more generally, cooperation outside the family is rare. Though it can be very profitable, it is also very risky, as cooperation makes an agent vulnerable to incompetence and cheating. This book presents a new picture of the emergence of cooperation in our lineage, developing through four fairly distinct phases. Our trajectory began from a baseline that was probably fairly similar to living great apes, who cooperate, but in fairly minimal ways. As adults, they rarely depend on others when the outcome really matters. This book suggests that cooperation began to be more important for humans through an initial phase of cooperative foraging generating immediate returns from collective action in small mobile bands. This established in our lineage about 1.8 million years ago, perhaps earlier. Over the rest of the Pleistocene, cooperation became more extended in its social scale, with forms of cooperation between bands gradually establishing, and in spatial and temporal scale too, with various forms of reciprocation becoming important. The final phase was the emergence of cooperation in large scale, hierarchical societies in the Holocene, beginning about 12,000 years ago. This picture is nested in a reading of the archaeological and ethnographic record, and twinned to an account of the gradual elaboration of cultural learning in our lineage, making cooperation both more profitable and more stable.
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Post, Robert M. The Neurochemistry and Epigenetics of PTSD. Edited by Frederick J. Stoddard, David M. Benedek, Mohammed R. Milad, and Robert J. Ursano. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190457136.003.0014.
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This chapter reviews the neurochemistry and epigenetics of posttraumatic stress disorder (PTSD). Traditional views of the neurochemistry of PTSD focus on alterations in classical central nervous system neurotransmitters serotonin and norepinephrine and pathological reactivity in the hypothalamic-pituitary-adrenal axis, and these are only briefly noted here. Instead, the chapter emphasizes a series of new conceptualizations and neurochemical data that have recently been elucidated. One is the recognition of the symptoms and neurobiology of PTSD as a moving target, being very different in different stages of illness evolution. Differences are apparent in the neurochemistry involved in early life stressor-related vulnerabilities to PTSD, the acute stress reaction, compensation and resolution phases, or ongoing chronicity with sleep disturbance, nightmares, flashbacks, hyperarousal, and dulling and depression. The neurochemical abnormalities vary as a function of this temporal unfolding and the common acquisition and progression of comorbid syndromes of alcohol and substance abuse.
Book chapters on the topic "Temporal Phases"
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Baumgart, P. "Impact of Shifted Sleeping and Working Phases on Diurnal Blood Pressure Rhythm." In Temporal Variations of the Cardiovascular System, 318–23. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-662-02748-6_21.
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Chiew, Shao-Hen, Leong-Chuan Kwek, and Chee-Kong Lee. "Exploring the Dynamics of Quantum Information in Many-Body Localised Systems with High Performance Computing." In Supercomputing Frontiers, 43–58. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-10419-0_4.
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Abstract Conventional many-body quantum systems thermalize under their own dynamics, losing information about their initial configurations to the environment. However, it is known that a strong disorder results in many-body localization (MBL). A closed quantum systems with MBL retains local information even in the presence of interactions. Here, we numerically study the propagation and scrambling of quantum information of a closed system in the MBL phase from an information theoretic perspective. By simulating the dynamics and equilibration of the temporal mutual information for long times, we see that it can distinguish between MBL and ergodic phases.
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Othmer, Hans G. "Synchronization, Phase-Locking and Other Phenomena in Coupled Cells." In Temporal Order, 130–43. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70332-4_19.
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Hastings, J. Woodland, Hellmuth Broda, and Carl H. Johnson. "Phase and Period Effects of Physical and Chemical Factors. Do Cells Communicate?" In Temporal Order, 213–21. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70332-4_31.
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Delmelle, Eric M. "Model-Based Criteria Heuristics for Second-Phase Spatial Sampling." In Spatio-Temporal Design, 54–71. Chichester, UK: John Wiley & Sons, Ltd, 2012. http://dx.doi.org/10.1002/9781118441862.ch3.
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Gurman, Alan S. "The Temporal Structure of Therapy: Key Questions OFTEN Associated with Different Phases of Sessions and Treatments—Plus a Host of Helpful Hints 1." In Brief Therapy and Beyond, 211–35. New York, NY : Routledge, 2017. Includes bibliographical references and index.: Routledge, 2017. http://dx.doi.org/10.4324/9781315205823-14.
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Garfinkel, A., and R. Abraham. "Phase Plots of Temporal Oscillations." In Ultradian Rhythms in Life Processes, 197–206. London: Springer London, 1992. http://dx.doi.org/10.1007/978-1-4471-1969-2_10.
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Sack, R. L., A. J. Lewy, and T. M. Hoban. "Free-Running Melatonin Rhythms in Blind People: Phase Shifts with Melatonin and Triazolam Administration." In Temporal Disorder in Human Oscillatory Systems, 219–24. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-72637-8_26.
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De Toro, Pasquale, and Silvia Iodice. "Urban Metabolism Evaluation Methods: Life Cycle Assessment and Territorial Regeneration." In Regenerative Territories, 213–30. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-78536-9_13.
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AbstractUrban Metabolism (UM) is a scientific phenomenon that comprises individual processes taking place in all cities at different spatial and temporal scales and that is based on the principle of conserving mass and energy. Analysing the metabolism of a city allows one to evaluate the impacts of urban functioning, taking into account the flows of energy, water, nutrients and waste and the materials in general that circulate within a city, and contributing to a multidimensional assessment of sustainability. Many authors have explored the phenomenon of UM and experimented with indices and evaluation methods, but there is still no consensus on the best assessment methods to use.The present paper presents an overview of UM assessment methods, particularly Life Cycle Assessment (LCA) and its possible uses for supporting territorial regeneration. A literature analysis is conducted of the evolution of this method in relation to scales that are different from the single product scale. LCA aims to assess the environmental impacts of the life cycles of single industrial products and services, but over the years it has gained increased attention in the urban planning field. Life cycle, in general, refers to all the phases that characterise the life of elements, comprising not only a single product, but extending this concept also to the wider territorial system. The concept of the life cycle of territorial systems is related to the evolution of the territory as a heritage and as a system of environmental, social and economic resources and services, whose transformation is linked to the different forms of governance. The territorial life cycle is formed by interconnected phases, referred to as the sub-systems of the resources and performance of a territory, that follow a predefined plan scenario. Consequently, the life cycle concept can be compared to that of change and it is closely linked to the analogy of ecosystems and the urban environment, which views the city as an entity in constant transformation.In the last few years, there has been an increase in activity in the LCA application field, with the introduction of scale variations and of the distinction between applications at the level of the single product and applications at the meso and macro levels. In other words, this approach is evolving and applications and hypotheses involving scales different from the micro scale are becoming popular.In this regard, extending the LCA tool to a meso perspective on a municipal scale or an individual urban district scale could prove to be a valid tool for assessing the sustainability of a territory with regard to the metabolic flows and the evolution of its life cycle.
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Russel, Anne, and Stéphanie Tillement. "When the Project Ends and Operations Begin: Ensuring Safety During Commissioning Through Boundary Work." In Contracting and Safety, 69–78. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-89792-5_8.
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AbstractEnsuring safe performance in inter-organisational projects involves managing a whole range of organisational, occupational and spatio-temporal boundaries. Regarding future safety, the commissioning phase is crucial. Drawing from the case of the commissioning of a new nuclear installation, we highlight the challenges associated with the transition between the project and operations and show the socio-material and temporal arrangements that support or hinder boundary work.
Conference papers on the topic "Temporal Phases"
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Primus, Manfred Jurgen, Klaus Schoeffmann, and Laszlo Boszormenyi. "Temporal segmentation of laparoscopic videos into surgical phases." In 2016 14th International Workshop on Content-Based Multimedia Indexing (CBMI). IEEE, 2016. http://dx.doi.org/10.1109/cbmi.2016.7500249.
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Moller, M., C. Glaser, and J. Birger. "Automatic interpolation of phenological phases in Germany." In 2011 6th International Workshop on the Analysis of Multi-temporal Remote Sensing Images (Multi-Temp). IEEE, 2011. http://dx.doi.org/10.1109/multi-temp.2011.6005041.
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Yoshii, Kazumichi, Nurul Sheeda Suhaimi, John Kiran Anthony, and Masayuki Katsuragawa. "Attosecond temporal shape manipulation by arbitrarily designing spectral phases." In 2013 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR). IEEE, 2013. http://dx.doi.org/10.1109/cleopr.2013.6600027.
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Dosimont, Damien, Harald Servat, Michael Wagner, Judit Gimenez, and Jesus Labarta. "Identifying the Temporal Structure of Parallel Application Computation Phases." In 2018 International Conference on High Performance Computing & Simulation (HPCS). IEEE, 2018. http://dx.doi.org/10.1109/hpcs.2018.00087.
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Skublewska-Paszkowska, Maria, Pawel Powroznik, and Edyta Lukasik. "Attention Temporal Graph Convolutional Network for Tennis Groundstrokes Phases Classification." In 2022 IEEE International Conference on Fuzzy Systems (FUZZ-IEEE). IEEE, 2022. http://dx.doi.org/10.1109/fuzz-ieee55066.2022.9882822.
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Baisero, Andrea, Yoan Mollard, Manuel Lopes, Marc Toussaint, and Ingo Lutkebohle. "Temporal segmentation of pair-wise interaction phases in sequential manipulation demonstrations." In 2015 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS). IEEE, 2015. http://dx.doi.org/10.1109/iros.2015.7353415.
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Menon, Sunil, O¨nder Uluyol, and Deepanker Gupta. "Turbine Engine Modeling Using Temporal Neural Networks for Incipient Fault Detection and Diagnosis." In ASME Turbo Expo 2004: Power for Land, Sea, and Air. ASMEDC, 2004. http://dx.doi.org/10.1115/gt2004-53649.
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We present a method of fault detection and diagnosis in turbine engines using temporal neural networks. Temporal neural networks allow us to represent the complete engine operating range by complementing the first-principle models which are usually restricted to takeoff and cruise phases. Because faults that are manifest only in particular phases can be detected, complete coverage leads to more accurate anomaly detection and fault diagnosis systems. The time series sensor data from the engine is collected during particular aircraft flight phases such as startup, takeoff, cruise, and shutdown. We use the echo state network to develop an incipient fault detection and diagnosis system. Echo state networks have several advantages over conventional types of temporal neural networks, including accuracy and ease of training. We demonstrate the efficacy of using the echo state networks to focus on flight phases that are difficult to model. We present results of our fault detection and diagnosis method with actual propulsion engine transient flight data.
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Laridhi Ouazaa, N. "Spatio-Temporal Distribution Petrological Characteristics of the Various Magmatic Phases in Tunisisa." In EAGE Conference on Geology and Petroleum Geology of the Mediterranean and Circum-Mediterranean Basins. European Association of Geoscientists & Engineers, 2000. http://dx.doi.org/10.3997/2214-4609.201405984.
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Senaratne, Hashini, Levin Kuhlmann, Kirsten Ellis, Glenn Melvin, and Sharon Oviatt. "A Multimodal Dataset and Evaluation for Feature Estimators of Temporal Phases of Anxiety." In ICMI '21: INTERNATIONAL CONFERENCE ON MULTIMODAL INTERACTION. New York, NY, USA: ACM, 2021. http://dx.doi.org/10.1145/3462244.3479900.
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Liu, T., and C. S. Lynch. "Phase-Dield Simulation of Rhombohedral and Tetragonal Phases in Ferroelectric Single Crystals." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-14945.
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Ferroelectric materials exhibit spontaneous polarization and domain structures below the Curie temperature. In this work the phase field approach has been used to simulate phase transformations and the formation of ferroelectric domain structures. The evolution of phases and domain structures was simulated in ferroelectric single crystals by solving the time dependent Ginzburg-Landau (TDGL) equation with polarization as the order parameter. In the TDGL equation the free energy of a ferroelectric crystal is written as a function of polarization and applied fields. Change of temperature as well as application of stress and electric fields leads to change of the free energy and evolution of phase states and domain structures. In this work the finite difference method was implemented for the spatial description of the polarization and the temporal evolution of polarization field was computed by solving the TDGL equation with an explicit time integration scheme. Cubic to tetragonal, cubic to rhombohedral and rhombohedral to tetragonal phase transformations were modeled, and the formation of domain structures was simulated. Field induced polarization switching and rhombohedral to tetragonal phase transition were simulated.
Reports on the topic "Temporal Phases"
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Suir, Glenn, Molly Reif, and Christina Saltus. Remote sensing capabilities to support EWN® projects : an R&D approach to improve project efficiencies and quantify performance. Engineer Research and Development Center (U.S.), August 2022. http://dx.doi.org/10.21079/11681/45241.
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Engineering With Nature (EWN®) is a US Army Corps of Engineers (USACE) Initiative and Program that promotes more sustainable practices for delivering economic, environmental, and social benefits through collaborative processes. As the number and variety of EWN® projects continue to grow and evolve, there is an increasing opportunity to improve how to quantify their benefits and communicate them to the public. Recent advancements in remote sensing technologies are significant for EWN® because they can provide project-relevant detail across a large areal extent, in which traditional survey methods may be complex due to site access limitations. These technologies encompass a suite of spatial and temporal data collection and processing techniques used to characterize Earth's surface properties and conditions that would otherwise be difficult to assess. This document aims to describe the general underpinnings and utility of remote sensing technologies and applications for use: (1) in specific phases of the EWN® project life cycle; (2) with specific EWN® project types; and (3) in the quantification and assessment of project implementation, performance, and benefits.
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Arnoldus, Henk F., and Thomas F. George. Spectral and Temporal Distribution of Phase-Conjugated Fluorescent Photons. Fort Belvoir, VA: Defense Technical Information Center, December 1990. http://dx.doi.org/10.21236/ada230504.
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Clausen, Jay, Susan Frankenstein, Jason Dorvee, Austin Workman, Blaine Morriss, Keran Claffey, Terrance Sobecki, et al. Spatial and temporal variance of soil and meteorological properties affecting sensor performance—Phase 2. Engineer Research and Development Center (U.S.), September 2021. http://dx.doi.org/10.21079/11681/41780.
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An approach to increasing sensor performance and detection reliability for buried objects is to better understand which physical processes are dominant under certain environmental conditions. The present effort (Phase 2) builds on our previously published prior effort (Phase 1), which examined methods of determining the probability of detection and false alarm rates using thermal infrared for buried-object detection. The study utilized a 3.05 × 3.05 m test plot in Hanover, New Hampshire. Unlike Phase 1, the current effort involved removing the soil from the test plot area, homogenizing the material, then reapplying it into eight discrete layers along with buried sensors and objects representing targets of inter-est. Each layer was compacted to a uniform density consistent with the background undisturbed density. Homogenization greatly reduced the microscale soil temperature variability, simplifying data analysis. The Phase 2 study spanned May–November 2018. Simultaneous measurements of soil temperature and moisture (as well as air temperature and humidity, cloud cover, and incoming solar radiation) were obtained daily and recorded at 15-minute intervals and coupled with thermal infrared and electro-optical image collection at 5-minute intervals.
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Suvorova, Sofia, Bill Moran, Elena Kalashyan, Peter Zulch, and Robert J. Hancock. Radar Performance of Temporal and Frequency Diverse Phase-Coded Waveforms. Fort Belvoir, VA: Defense Technical Information Center, January 2006. http://dx.doi.org/10.21236/ada475484.
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Day, Christopher M., Hiromal Premachandra, and Darcy M. Bullock. Characterizing the Impacts of Phasing, Environment, and Temporal Factors on Pedestrian Demand at Traffic Signals. Purdue University, 2011. http://dx.doi.org/10.5703/1288284317352.
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There is a need for more and higher quality data on pedestrian demand patterns for a number of applications in planning, transportation engineering, public health, and other areas. It is particularly desirable to better characterize the influence of daily, weekly, and annual variations; the impact of weather and special events; and the effects of changes in pedestrian phasing. This paper proposes and demonstrates a methodology for quantifying the relative demand for pedestrian service at a signalized intersection by using the percent of signal cycles per hour in which the pedestrian phase was actuated. Although this performance measure does not by itself provide a pedestrian count, it can be used as a surrogate to characterize how pedestrian volumes vary due to operating conditions. More importantly, since this technique does not require new sensors, the data can be collected at thousands of intersections across the nation where pedestrian push buttons are in use. This paper documents findings from over a year of data collection at a signalized intersection on a college campus. The effects of daily/weekly/annual variations, special events, weather (temperature and precipitation), seasonal changes in activity patterns, and changes in pedestrian signal phasing are documented. A Tobit model is used to account for the influences of these variables and understand how they co-influence pedestrian activity. The implementation of an exclusive pedestrian phase is associated with a 9% increase in pedestrian phase utilization at the intersection. This change is associated with a decrease in user cost relative to performing midblock crossings. The modeled impact of snowfall events adds further insight by showing that as the user cost of making midblock crossings increases, pedestrian activity at the intersection increases.
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Yariv, A. Fiber Coupled Phase Conjugation Mirror and Temporal Information Exchange Using Photorefractive Materials. Fort Belvoir, VA: Defense Technical Information Center, September 1989. http://dx.doi.org/10.21236/ada238723.
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Tran, C. V. Cramer-Rao Bound, MUSIC, and Maximum Likelihood. Effects of Temporal Phase Difference. Fort Belvoir, VA: Defense Technical Information Center, November 1990. http://dx.doi.org/10.21236/ada230259.
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Rice, J. M., R. C. Paulen, M. Ross, M. B. McClenaghan, and H E Campbell. Quaternary geology of the south Core Zone area, Quebec and Labrador. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/330903.
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The complex glacial geomorphology of east-central Quebec and western Labrador has resulted in conflicting ice sheet reconstructions leaving many questions regarding the behaviour of large ice sheets within their inner regions. Specifically, the ice-flow chronology and subglacial conditions remain poorly constrained. To address this, surficial geology investigations were conducted across the border of Quebec and Labrador. A complex glacial history consisting of five ice-flow phases influenced by regional ice stream dynamics was identified, including a near-complete ice-flow reversal. During each ice-flow phase, the subglacial thermal conditions fluctuated both spatially and temporally, resulting in palimpsest glacial dispersal patterns. Deglacial ages from samples collected as part of this research confirm deglaciation occurred relatively rapidly around 8 ka. The results of this work improve our understanding of the glacial history of an inner region of the Laurentide Ice Sheet and have important implications for mineral exploration in the southern Core Zone area.
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Mayne, Casey, David May, and David Biedenharn. Empirical analysis of effects of dike systems on channel morphology and flowlines. Engineer Research and Development Center (U.S.), March 2021. http://dx.doi.org/10.21079/11681/39799.
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A phased study of the dike fields within the Vicksburg and Memphis Districts of the US Army Corps of Engineers was conducted to document the channel morphology trends since dike construction on the Lower Mississippi River (LMR). This included the development of the hydrographic survey database and methodology utilized to identify changes in channel geometry in response to dike construction. A subsequent report will provide further refinements to the approach and results of the comprehensive assessment. Recent Mississippi River Geomorphology and Potamology program efforts have employed the database developed by Mr. Steve Cobb to assess the geomorphic changes in 21 dike systems along the LMR. Previous studies using this database have indicated that the dike fields have not caused a loss of channel capacity. Furthermore, these efforts suggested that the trends in the dike fields are closely related to the long-term geomorphic trends along the LMR. Previous efforts using the Cobb database provided considerable insight into the dike effects on the LMR, but they were limited spatially and temporally. In this study, a database and protocols were developed to allow for a more robust assessment of dike field impacts and to extend the spatial and temporal extents of the analysis.
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Chin, S. M. Temporary Losses of Highway Capacity and Impacts on Performance: Phase 2. Office of Scientific and Technical Information (OSTI), November 2004. http://dx.doi.org/10.2172/885576.
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