Academic literature on the topic 'Plot device'
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Journal articles on the topic "Plot device"
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Ashikhmanova, N. A. "Sacrifice as a plot device." Proceedings of Southern Federal University. Philology, no. 4 (2015): 58–64. http://dx.doi.org/10.18522/1995-0640-2015-4-58-64.
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Liu, Shu Guang. "Influences of Main Parameters on Performance of Seed-Filling Device in Plot Seeder." Applied Mechanics and Materials 268-270 (December 2012): 1266–69. http://dx.doi.org/10.4028/www.scientific.net/amm.268-270.1266.
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Seed-filling device of plot seeder is the research object. Influences of the four test factors (motion velocity (v), rotation speed of filling device (ω), generatrix length of seed-filling device (l), base angle of seed-filling device (α)) on the uniformity in seeding-filling process for wheat seed are analyzed by DPS7.05. The effect order of four test factors on wheat seed is obtained. Optimum parameters for wheat seed established are as follows: motion velocity of plot seeder 0.4m/s, rotation speed of seed-filling device 0.25rad/s, generatrix length of seed-filling device 0.1m, base angle of seed-filling device 50º. The best plot length for the seed-filling device is 10m and the best CV in seed-filling process for wheat seed is 7.85% when seeding rate for wheat seed are 180g per plot.
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Panaitescu, Diana Maria. "Use of Time Reorder as a Literary Plot Device." Papers in Arts and Humanities 2, no. 2 (2022): 39–50. http://dx.doi.org/10.52885/pah.v2i2.105.
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The concept of time is deeply rooted within the field of literature; not only does it present itself in literary works in the form of theme or symbol. It can also be viewed in the reflection of the time in which the piece was written; but, most importantly in the context of this paper, it plays an essential and indispensable role as a plot device when constructing the narration. The modification of these expressions of time varies in accordance with the author’s views and purposes for their literary work. Thus, instances of toying with the base structure of time flow occur. This paper aims to display the employment of time reordering as a plot device in order to conclude whether this manner of writing was beneficial to the works in which it is depicted. This analysis will take into consideration a variety of advantages that time reordering could provide, from adding a sense of mystery, chaos, or irony, to much more intricate plot, structure or even subtext benefits. To be able to encounter all of the mentioned benefits, this paper will discuss a selected number of fictional literary works from the Gothic-like historical novel Hawksmoor by Peter Ackroyd to the contemporary novel The Stone Gods by Jeanette Winterson. The term of time reordering within this paper will refer to the abandonment of a linear plot line and the approach of multiple timelines or a hazardous presentation of events.
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Turner, Robert Y., and Roger L. Cox. "Shakespeare's Comic Changes: The Time-Lapse Metaphor as Plot Device." Shakespeare Quarterly 43, no. 4 (1992): 496. http://dx.doi.org/10.2307/2870872.
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Dongwei, Wang, Wang Jiasheng, and Shang Shuqi. "Design and Experimental Study on Seed Metering Device of Peanut Plot Seeder." Agricultural Machinery and Technologies 13, no. 4 (2019): 38–41. http://dx.doi.org/10.22314/2073-7599-2019-13-4-38-41.
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The seed metering device is the key working part of the peanut planter and is placed above the bottom of the seed box or above the opener. The essence of the seed metering process is the eff ect of the seed meter on the seed, converting the seed from the population into an individual, and converting it into a uniform seed stream or a continuous single seed. The seeding method and quality of the seeding machine depend mainly on the seed metering device. Aiming at the shortage of re-broadcasting rate and missed-out rate during sowing, the diff erent parameters of the air-suction metering device were analyzed, and the seeding performance of the seeding device was tested to obtain the primary and secondary factors aff ecting the performance of the seeding device, and the quality of seeding was improved.
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Fox, S. L., and L. K. Blomquist. "Plot combine modified for harvesting single rows." Canadian Journal of Plant Science 82, no. 1 (2002): 153–55. http://dx.doi.org/10.4141/p01-052.
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A shield was developed to mount on a small plot combine header to separate and flatten adjacent unwanted rows from selected rows being harvested. Additional shielding was added underneath the combine to prevent stray spikes from discarded rows entering the combine. Approximately 25% more single row plots could be harvested per day with a plot combine modified with this device. Key words: Equipment, modification, wheat
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Buuren, Stef van, and Miranda Fredriks. "Worm plot: a simple diagnostic device for modelling growth reference curves." Statistics in Medicine 20, no. 8 (2001): 1259–77. http://dx.doi.org/10.1002/sim.746.
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Polanco, Nicole, Sharon Odametey, Neda Derakhshani, et al. "Evaluating the Accuracy of the VitalWellness Device." Iproceedings 5, no. 1 (2019): e16250. http://dx.doi.org/10.2196/16250.
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Background Wellness devices for health tracking have gained popularity in recent years. Additionally, portable and readily accessible wellness devices have several advantages when compared to traditional medical devices found in clinical environments The VitalWellness device is a portable wellness device that can potentially aide vital sign measuring for those interested in tracking their health. Objective In this diagnostic accuracy study, we evaluated the performance of the VitalWellness device, a wireless, compact, non-invasive device that measures four vital signs (blood pressure (BP), heart rate (HR), respiratory rate (RR), and body temperature using the index finger and forehead. Methods Volunteers age ≥18 years were enrolled to provide blood pressure (BP), heart rate (HR), respiratory rate (RR), and body temperature. We recruited participants with vital signs that fell within and outside of the normal physiological range. A sub-group of eligible participants were asked to undergo an exercise test, aerobic step test and/or a paced breathing test to analyze the VitalWellness device’s performance on vital signs outside of the normal physiological ranges for HR and RR. Vital signs measurements were collected with the VitalWellness device and FDA-approved reference devices. Mean, standard deviation, mean difference, standard deviation of difference, standard error of mean difference, and correlation coefficients were calculated for measurements collected; these measurements were plotted on a scatter plot and a Bland-Altman plot. Sensitivity analyses were performed to evaluate the performance of the VitalWellness device by gender, skin color, finger size, and in the presence of artifacts. Results 265 volunteers enrolled in the study and 2 withdrew before study completion. Majority of the volunteers were female (62%), predominately white (63%), graduated from college or post college (67%), and employed (59%). There was a moderately strong linear relationship between VitalWellness BP and reference BP (r=0.7, P<.05) and VitalWellness RR and reference RR measurements (r=0.7, P<.05). The VitalWellness HR readings were significantly in line with the reference HR readings (r=0.9, P<.05). There was a weaker linear relationship between VitalWellness temperature and reference temperature (r=0.3, P<.05). There were no differences in performance of the VitalWellness device by gender, skin color or in the presence of artifacts. Finger size was associated with differential performance for RR. Conclusions Overall, the VitalWellness device performed well in taking BP, HR, and RR when compared to FDA-approved reference devices and has potential serve as a wellness device. To test adaptability and acceptability, future research may evaluate user’s interactions and experiences with the VitalWellness device at home. In addition, the next phase of the study will evaluate transmitting vital sign information from the VitalWellness device to an online secured database where information can be shared with HCPs within seconds of measurement.
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Maličević, Zoran, Milan Jugović, Siniša Mitrić, and Dragoljub Mitrović. "The Influence of the Sprayer Control on the Increase in the Productivity of the Machine-Tractor Aggregate in the Protection of Orchards." АГРОЗНАЊЕ 20, no. 2 (2019): 85. http://dx.doi.org/10.7251/agren1902085m.
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For the chemical protection of orchards, a research on the surface area of 150 ha was carried out, and a method of spraying was applied. In this method, machines known as orchard sprayer are used, in which, in the presence of the produced air current, liquid disintegration is also carried out at a drop size of 50 to 150 μm. The aim of the research is to improve the precision of work within the control of the device, where the emphasis on the nozzle capacity is primarily augmented, and therefore increases the productivity of the device. The results obtained on the basis of a 10-hour working time prove that the exploitation of the controlled orchard sprayer ensures greater productivity by 2.24 ha on a plot distanced 50 m from the location of the tank refill, i.e., 2.20 ha on a plot distanced 2000 m from the location of the tank refill, for the drawn sprayer of 1.000 l volume. By analyzing the total energy inputs of orchard protection, different application models point to a smaller energy input when using controlled devices on a 50 m range for 7.58%. Energy inputs on a longer distance plot are by 24.68% lower in favor of the treatment of controlled sprayer.
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Tabal, R. E., R. M. C. Amongo, E. P. Quilloy, and E. K. Peralta. "Development of a single-row push type plot seeder with mechatronic seed feeding device for corn (Zea mays L.) field breeding experiment." IOP Conference Series: Earth and Environmental Science 977, no. 1 (2022): 012067. http://dx.doi.org/10.1088/1755-1315/977/1/012067.
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Abstract The absence of an appropriate mechanization technology for lower stages of field breeding experiment is a common problem in seed research industry. This study was focused on the development of a corn plot seeder to be used in planting corn seeds for lower stages of field breeding experiments. The machine was equipped with mechatronic seed feeding device to provide an efficient way of sowing for every plot. Field testing and cost analysis between the Corn plot seeder and two other seeders were conducted to determine the performance and economic viability. Results showed that the Corn plot seeder can sow seeds at 0.49 ha/day with a field efficiency of 42.46 %. Its row/hill spacing was also at the optimum values of 70 ± 3 cm and 21 ± 4 cm respectively. It was able to sow 1 ± 1 seeds per hill and generated a 93% planting efficiency with a 7% missed hill. The Corn plot seeder had the highest capital investment of Php 27,380.00 but had the cheapest annual operating cost of Php 27,963.36. The push type corn plot seeder with mechatronic seed feeding device was the most efficient and economical machine for lower stage corn field breeding experiment.
Dissertations / Theses on the topic "Plot device"
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Ryan, Jennifer Joan. "Introducing Mr Perky : subverting the fantasy trope of immortality in contemporary speculative fiction." Thesis, Queensland University of Technology, 2009. https://eprints.qut.edu.au/30242/1/Jennifer_Ryan_Thesis.pdf.
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The Tide Lords series of fantasy novels set out to examine the issue of immortality. Its purpose was to look at the desirability of immortality, specifically why people actively seek it. It was meant to examine the practicality of immortality, specifically — having got there, what does one do to pass the time with eternity to fill? I also wished to examine the notion of true immortality — immortals who could not be killed.
What I did not anticipate when embarking upon this series, and what did not become apparent until after the series had been sold to two major publishing houses in Australia and the US, was the strength of the immortality tropes. This series was intended to fly in the face of these tropes, but confronted with the reality of such a work, the Australian publishers baulked at the ideas presented, requesting the series be re-written with the tropes taken into consideration. They wanted immortals who could die, mortals who wanted to be immortal. And a hero with a sense of humour.
This exegesis aims to explore where these tropes originated. It will also discuss the ways I negotiated a way around the tropes, and was eventually able to please the publishers by appearing to adhere to the tropes, while still staying true to the story I wanted to tell. As such, this discussion is, in part, an analysis of how an author negotiates the tensions around writing within a genre while trying to innovate within it.
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Ryan, Jennifer Joan. "Introducing Mr Perky : subverting the fantasy trope of immortality in contemporary speculative fiction." Queensland University of Technology, 2009. http://eprints.qut.edu.au/30242/.
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The Tide Lords series of fantasy novels set out to examine the issue of immortality. Its purpose was to look at the desirability of immortality, specifically why people actively seek it. It was meant to examine the practicality of immortality, specifically — having got there, what does one do to pass the time with eternity to fill? I also wished to examine the notion of true immortality — immortals who could not be killed.
What I did not anticipate when embarking upon this series, and what did not become apparent until after the series had been sold to two major publishing houses in Australia and the US, was the strength of the immortality tropes. This series was intended to fly in the face of these tropes, but confronted with the reality of such a work, the Australian publishers baulked at the ideas presented, requesting the series be re-written with the tropes taken into consideration. They wanted immortals who could die, mortals who wanted to be immortal. And a hero with a sense of humour.
This exegesis aims to explore where these tropes originated. It will also discuss the ways I negotiated a way around the tropes, and was eventually able to please the publishers by appearing to adhere to the tropes, while still staying true to the story I wanted to tell. As such, this discussion is, in part, an analysis of how an author negotiates the tensions around writing within a genre while trying to innovate within it.
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Friberg, Erica. "The Professor and the Typist : Characterisation and Plot Devices in Dracula." Thesis, Stockholms universitet, Engelska institutionen, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-72006.
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Dracula is a novel that has been said to have flat and uninteresting characters. Only two characters have been acknowledged as having depth, Wilhelmina Harker and Abraham Van Helsing. However, no extensive research has been done to determine what it is that makes them complex, leaving a gap in the understanding of Dracula. This essay will appraise the significance of the two characters to the novel by examining how they are characterised and by studying their importance to the plot. This allows for a new perspective on Dracula that revises the standard generic definition of the novel as Gothic. The stereotypical characters in Gothic novels are replaced with more intricate characters and subtleties. For instance, this essay argues that one can find Mina an ambiguous character who is stuck following rules she despises, and Van Helsing might be hiding his fear of Mina behind the mask of appreciation. Furthermore, the importance of Mina and Van Helsing to the plot, shown in several ways where the most prominent one is their associations with knowledge, changes what characters are the real protagonists of Dracula and shows another difference to the traditional Gothic novel. This essay reveals that there are holes in the Dracula research, and that many new readings can still be found. If one resists looking at the novel as purely Gothic, there are nuances that show that it does not quite fit the genre, and characterisation is one aspect that clearly differs.
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Nishimoto, Michael Yoshiya. "Thermal processing of multilayer PLZT actuators." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/19637.
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Srivastava, Manu M. "Effect of microstructure on electromechanical properties of PLZT multilayer actuators." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/18931.
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Lo, Jingjer. "The contribution of literary features and rhetorical devices in narrative plot climax of Genesis 22:1-19 to Abraham narrative (Genesis 12-25)." Online full text .pdf document, available to Fuller patrons only, 2001. http://www.tren.com.
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Morossi, Ilaria. "Modellazione e analisi in frequenza di celle a supercondensatore." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.
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Tra le diverse tipologie di sistemi di accumulo energetico, i supercondensatori, grazie alla
elevata densità di potenza, alla scarsa manutenzione richiesta e alla lunga vita utile in termini di
numero di cicli, vedono grande flessibilità e possibilità di applicazione in molteplici settori del
mercato, sia in utilizzo esclusivo sia all’interno di sistemi ibridi, dove vengono affiancati ad
un'altra tecnologia di accumulo con caratteristiche complementari in grado di migliorarne le
performance.
Nell’ottica di estendere le applicazioni e ottimizzare il progetto e le prestazioni dei sistemi a
supercondensatore è fondamentale lo sviluppo di modelli efficaci, in grado di simulare in
maniera fedele il comportamento reale. L’elaborazione di modelli permette di eseguire test e
simulare diverse condizioni operative, anche estreme, contenendo i costi e senza generare
situazioni di pericolo.
In questa tesi vengono esposti i principali modelli elettrici di celle a supercondensatore (SCs)
presenti in letteratura e ne viene proposta l’implementazione in ambiente Matlab-Simulink,
avvalendosi anche degli strumenti forniti dalle librerie Stateflow e Simscape.
La procedura di stima dei parametri viene condotta attraverso la apposita toolbox di Simulink e
i risultati dei modelli ottimizzati vengono confrontati con i profili sperimentali, ricavati da test
eseguiti in laboratorio su un supercondensatore Maxwell Technologies BCAP3000.
Infine, vista la possibilità offerta dai SC di sopportare veloci cicli di carica e scarica, viene
eseguita un’analisi della risposta in frequenza, sempre in ambiente Simulink, in cui si realizza
il diagramma complesso di impedenza nel range di frequenza da 1 mHz a 100 kHz. Tale analisi
consentirà di individuare i valori di frequenza limite oltre i quali il supercondensatore non risulta
più efficiente e sarà completata da un’interpretazione sia elettrica circuitale, sia fisica dei grafici
di impedenza.
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Черниш, Максим Леонідович. "Робототехнічний пристрій для завантаження дробарки". Магістерська робота, Київський національний університет технологій та дизайну, 2021. https://er.knutd.edu.ua/handle/123456789/18567.
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Робота присвячена аналізу робототехнічних пристроїв. В межах роботи виконано аналіз існуючих конструкцій завантажувальних пристроїв. Описаний принцип роботи та кінематична схема розвантажувача з стрічкового конвеєру плужкового типу. Представлені розрахунки габаритних розмірів стрічки, тяговий розрахунок, показана діаграма натягу і розмір стрічки для подальшого проєктування плужкового скидача. Перелічено вимоги щодо безпеки і охорони навколишнього середовища, а саме вимоги до повітря робочої зони, виробничого освітлення, виробничого шуму і вібрації, електробезпеки, безпеки технологічних процесів та пожежної безпеки. Також було проведено аналіз небезпеки об’єкта.<br>Работа посвящена анализу робототехнических устройств. В работе выполнен анализ существующих конструкций загрузочных устройств. Описан принцип работы и кинематическая схема загрузчика плужкового типа с ленточного конвейера в дробилку. Представлены расчеты габаритных размеров ленты, тяговый расчет, показана диаграмма натяжения, выполнен расчет размера ленты для дальнейшего проектирования плужкового сбрасывателя (загружателя). Перечислены требования к безопасности и охране окружающей среды, а именно требования к воздуху рабочей зоны, производственному освещению, производственному шуму и вибрации, электробезопасности, безопасности технологических процессов и пожарной безопасности. Также был проведен анализ опасности объекта.<br>The work is devoted to the analysis of robotic devices. As part of the work an analysis of existing structures of loading devices was performed. The principle of operation and kinematic scheme of the unloader from the belt conveyor of plow type are described. The calculations of the overall dimensions of the tape, traction calculation, the diagram of tension and the size of the tape for the further design of the plow dump are presented. The requirements for safety and environmental protection are listed, namely the requirements for the air of the working area, industrial lighting, industrial noise and vibration, electrical safety, safety of technological processes and fire safety. An object hazard analysis was also performed.
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高健薰. "Preparation and properties of PLZT Series Ferroelectric Thin Films Applied in Optical Waveguide Devices." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/gk47r3.
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Farrow, Erin. "Somewhere Between: The Shifting Trends in the Narrative Strategies and Preoccupations of the Young Adult Realistic Fiction Genre in Australia." Thesis, 2017. https://vuir.vu.edu.au/35052/.
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‘Young adult realistic fiction’ is a classification used by contemporary publishers such as Random House, McGraw Hill Education and Scholastic, who define it as ‘stories with characters, settings, and events that could plausibly happen in true life’ (Scholastic 2014). From the first Australian young adult imprint in 1986 it has become possible to trace substantial shifts in the trends of genre. This thesis explores some of the ways that the narrative structures and preoccupations of contemporary Australian young adult realistic fiction novels have shifted, particularly in regards to the portrayal of the main protagonist’s self-awareness, the complexity of the subject matter being discussed and the unresolved nature of the novels’ endings. The significance of these shifting trends within the genre is explored by means of a creative component and an accompanying exegesis. Through my novel, Somewhere between, I aim to consider and build on the changing narrative structures and preoccupations of Australian novels of the young adult realistic fiction genre. The exegesis uses the examination of representative Australian YA novels published between 1986 and 2013 to demonstrate the shifting trends in these three main narrative structures and preoccupations. The gradual, steady, shift in the narrative structures and preoccupations of the genre away from stability and assurance gives evidence of shifting notions of childhood and adolescent subjectivity within contemporary Australian society.
Books on the topic "Plot device"
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Cox, Roger L. Shakespeare's comic changes: The time-lapse metaphor as plot device. University of Georgia Press, 1991.
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Heidi, Stephens, ed. Plot: 15 creative projects that help kids become better readers and writers. Scholastic Professional Books, 1998.
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Mannel, Sylvio. Comparison of combinations of sighting devices and target objects for establishing circular plots in the field. Rocky Mountain Research Station, Natural Resources Research Center, 2006.
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The chortling bard!: Caught'ya! grammar with a giggle for high school : a method for teaching grammar, mechanics, usage, vocabulary, and literary devices with plots and vocabulary borrowed from Shakespeare. Maupin House, 2003.
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Heidi, Stephens, ed. Setting: 15 creative projects that help kids become better readers and writers. Scholastic Professional Books, 1998.
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Boriss, Lis. Nuclear Hoodie: Broken Plot Device collection Volume 1. Lulu Press, Inc., 2010.
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Cox, Roger L. Shakespeare's Comic Changes: The Time-Lapse Metaphor As Plot Device. University of Georgia Press, 2011.
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Heller, Natasha. Understanding Retribution in a Changing Religious Landscape. Oxford University Press, 2017. http://dx.doi.org/10.1093/acprof:oso/9780190278359.003.0015.
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This chapter considers ideas of sin, retribution, and injustice from the introduction of Buddhism to China to 600 CE. The concepts of karma and transmigration are usually considered among the most significant contributions Buddhism made to religious belief in China, but these ideas were understood within an existing framework of how transgressions were handled in both the human and superhuman realms. This chapter examines the interaction of these new and old discourses by focusing on the sixth-century collection known as Annals of Avenging Spirits (Yuanhun zhi 冤魂志), compiled by the eminent literatus Yan Zhitui 顏之推 (531–591 CE). This chapter considers how this concept of injustice is in dialogue with both pre-Buddhist and Buddhist texts on sin, revenge, and retribution. It discusses how instances of injustice fit into narrative and the degree to which injustice as a plot device also functions to model moral thinking about misdeeds and retribution.
Book chapters on the topic "Plot device"
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Choi, Eric. "Plot Device." In Just Like Being There. Springer International Publishing, 2005. http://dx.doi.org/10.1007/978-3-030-91605-3_9.
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Basanese, Manny. "Your plot device toolbox." In Writing the Comedy Pilot Script. Routledge, 2021. http://dx.doi.org/10.4324/9781003108788-14.
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Feigenbaum, Joan, and Brad Rosen. "On the Use of Security and Privacy Technology as a Plot Device." In Security Protocols XXIII. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-26096-9_27.
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Feigenbaum, Joan. "On the Use of Security and Privacy Technology as a Plot Device (Transcript of Discussion)." In Security Protocols XXIII. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-26096-9_28.
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Sweet, Ryan. "“Losing a Leg to Gain a Wife”: Marriage, Gender, and the Prosthetic Body Part." In Prosthetic Body Parts in Nineteenth-Century Literature and Culture. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-78589-5_5.
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AbstractThis chapter traces representations of male and female prosthesis users in the marriage plot, the nineteenth-century narrative form most heavily populated by users of prosthetic devices. Building on the work of scholars such as Martha Stoddard Holmes and Talia Schaffer, who expose the important roles that disabled characters perform in Victorian marriage plots, this chapter identifies the prosthesis-marriage plot as a related yet separately identifiable formulaic plot structure. As the chapter argues, when viewed collectively, and at times also individually, prosthesis-marriage plots present unstable affective and imaginative treatments of prosthesis users. These representations shed light on the complex ways in which discourses of gender, class, and ableism intersect and how, in particular instances, the bodily status quo is challenged, brought into question, or even outright rejected.
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Effron, Malcah. "Plots and Devices." In Teaching Crime Fiction. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-90608-9_3.
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Tollefson, Margot. "Graphics Devices and Laying Out Plots." In Visualizing Data in R 4. Apress, 2021. http://dx.doi.org/10.1007/978-1-4842-6831-5_6.
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Wang, F., and G. H. Haertling. "Transverse Electrooptic Properties of Magnetron Sputtered PLZT Thin Films." In Multicomponent and Multilayered Thin Films for Advanced Microtechnologies: Techniques, Fundamentals and Devices. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1727-2_20.
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Floris, Antonio, Lucio Di Cosmo, Maria Rizzo, and Amato Patrone. "Field Assessment—Survey Protocols and Data Collection." In Springer Tracts in Civil Engineering. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-98678-0_4.
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AbstractThe INFC2015 field campaign surveyed almost 9000 sample points and assessed and measured a relevant number of variables. This chapter describes the procedures adopted to retrieve the sample points marked in the previous NFI (INFC2005) and to reach and mark sample points never located before on the ground. The chapter also describes the protocol used for classifying and measuring the variables, either at a stand level or a single item level as well as the relevant sample unit (point or plot) for measuring each variable. Some sections of the chapter describe the electronic devices and procedures used for storing the field data and sending them to the central database. It also details the way in which crews were supported remotely and the way data quality assurance was applied during the campaign, both in the field and from a distance.
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Quicke, Donald, Buntika A. Butcher, and Rachel Kruft Welton. "Adding photographs." In Practical R for biologists: an introduction. CABI, 2021. http://dx.doi.org/10.1079/9781789245349.0029.
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Abstract This chapter shows how to insert photographic files into plots. The R base package does not have any tools for handling photographs, but recently Simon Urbanek has created the CRAN packages jpeg (which seems to work with most versions) and tiff (which allows importing and exporting some of the standard tiff file types), and displaying them on the console. Inevitably because there are various graphics devices used by different R versions on different systems there will probably have to be some fiddling with code to get the perfect output. It may be easier on a MacOSX, and PCs do not support some graphics features of tiff files.
Conference papers on the topic "Plot device"
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Cai, Liang-Wu. "Using MATLAB to Enhance Engineering Students’ Analytical Problem-Solving Skills." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-43020.
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Symbolic analysis is one of the most feared tasks for many undergraduate students in engineering disciplines. Students argue that, without numerical values, it is difficult to make a sense out of a long expression. Instructors have experienced that students are diffident in such analyses; and they quickly lose interest in the topic. This trend has been enhanced with more prevalent use of computers in engineering curricula in recent years. In the senior level Mechanical Vibrations course, this author has experimented with an innovative procedure of using mathematical software such as MATLAB to enhance the students’ learning experience with extensive symbolic calculations. In this experiment, MATLAB is used as a rudimentary plotting device that allows students to plot curves. The procedure provides students a systematical approach to produce parametric plots from an analytical expression, and to validate the expression on physical grounds. This innovative procedure has changed students’ perception about long expressions, decreased their fear, and boosted their confidence in their analytical skills. All these help student to develop a more positive altitude towards symbolic analyses.
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Bindiganavale, Govindraj Shreyas, Hyejin Moon, Seung Mun You, and Miguel Amaya. "Digital Microfluidic Device for Hotspot Cooling in ICS Using Electrowetting on Dielectric." In ASME 2012 Third International Conference on Micro/Nanoscale Heat and Mass Transfer. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/mnhmt2012-75136.
Full textAbstract:
To meet the increasing demand of efficient cooling performance in small scale, this paper presents a digital microfluidics (DMF) microscale liquid cooling system which works on the principle of electrowetting on dielectric (EWOD). In EWOD DMF, fluids are handled drop-wise by external electric field. When the dispensed liquid droplet arrives at the hotspot by EWOD DMF operation, it picks up heat and removes heat when it leaves. This process can be repeated for a series of droplets by using a completely automated LabVIEW controlled system connected to the PCB package. With the help of indium tin oxide (ITO) thin film resistance temperature detectors (RTD) and pre-calibrated temperature coefficient of resistance (TCR) data, the temperatures of the hotspot before and after the residence of liquid droplet (i.e., cooling) can be recorded for different frequencies (dwelling time period of droplet on the hotspot) of the drop motion and varying heater power. Future work will involve RTD resistance data collection to plot the heat flux and the temperature difference (before and after cooling) for different frequencies of drop motion. Although the primary focus is to study single phase cooling, the DI water drop will experience considerable evaporation resulting in higher cooling performance. The single phase cooling studies will help in establishing a robust platform for future two-phase cooling analysis in which evaporation effects will be considered.
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Javed, Salman, Farhan Javed, and Samsher. "Effect of Boat Tail Profile on Drag Coefficient of a Sedan Using CFD." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-72653.
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An appendage is a boat tail which is installed at the rear section of the passenger car. An inflatable appendage has been developed to reduce the aerodynamic drag experienced by passenger cars. It can be inflated when driving under high-speed conditions and deflated while parking. In this study, an appendage is designed to maintain the streamlined rear body configuration and reduce flow separation. The profile of this aerodynamic device is based on several mathematical curves such as kappa curve, lame curve, catenary curve and aerofoil curve. Four types of boat tailing devices with different lengths and profiles were installed, and computational fluid dynamics (CFD) analysis was performed under moving ground conditions. The primary objective of this study is to find an optimum shape for the appendage and explain the aerodynamic drag reduction mechanism. Comparisons between the base model and modified models were made on the basis of the coefficient of drag, pressure contours, velocity contours, velocity streamlines and pressure distribution plot. It is shown that significant drag reduction can be obtained with the proposed aerodynamic device. Improvement in fuel efficiency varies based on the profile of add-on device. It is shown numerically that the aerodynamic performance is improved by 18.8% compared to the base model. As a result, the fuel consumption of the modified sedan reduces by 4.5%.
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Wakai, N., M. TsuTsumi, and T. Setoya. "The Study of ESD Destructive Mechanism for PN-Junction." In ISTFA 1996. ASM International, 1996. http://dx.doi.org/10.31399/asm.cp.istfa1996p0345.
Full textAbstract:
Abstract Mechanism of destruction caused by electrostatic discharge of PN junction was examined from two viewpoints; classification of destruction mode with consideration to destructive energy density, and comparison of destruction shape. Destructive energy density of PN junction was calculated based on Speakman model, and destruction mode was classified by Wunsch-Bell plot. As a result of Wunsch-Bell plot, electric discharge which occur at low resistance, for example machine model (MM: C∙R = 200pF ∙ 0Ω), resulted in adiabatic destruction that does not involve thermal diffusion. With electric discharge at high resistance, for example human body model (HBM: C∙R = 100pF ∙ 1500Ω), excessive destruction in intermediate region that involves thermal diffusion, and depending on the device, destruction at equilibrium region were proven to be reproducible. In case of MM, (adiabatic region destruction) destruction was confirmed in a wide extent of the joint part, but in case of HBM (intermediate region destruction) destruction was confirmed near the center of the joint part. From this fact, it was found that by verifying the places of destruction and their shapes, although in special cases, it is possible to know the destruction mode when destruction occurs.
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Malhi, Charanjeet Kaur, and Trupti Cherian. "Experimental Analysis of Orifice Type Thrust Bearing." In ASME 8th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2006. http://dx.doi.org/10.1115/esda2006-95477.
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A single pad thrust bearing with central orifice restrictor, was fabricated and tested with a loading frame design for varying loads and supply pressures. One of the objectives of conducting the test was to obtain load verses air-gap curves for different supply pressures. The air bearing was supplied with different diameters of orifice. Another objective was to measure recess pressure at different supply pressures and loads and obtain a three dimensional plot. The recess pressure in the bearing is measured by the Smart Pressure Device. The testing of the thrust bearing enabled to validate the measurement system used. The results obtained were in good agreement with the investigations made in this field by other investigators. The sensor used also showed good repeatability and linearity, which approves its use for the measurement system.
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Alhussan, Khaled. "A Novel Design of Polymer Electrolyte Membrane Fuel Cell." In ASME/JSME 2007 5th Joint Fluids Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/fedsm2007-37458.
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A fuel cell is an energy conversion device that converts the chemical energy of fuel into electrical energy. Fuel cells operate continuously if they are provided with the reactant gases, not like batteries. Fuel cells can provide power in wide range. Fuel cells are environmentally friendly; the by-product of hydrogen/oxygen fuel cell is water and heat. This paper will show a numerical modeling for this spiral design of high pressurized Polymer Electrolyte Membrane fuel cell. Numerical modeling requires understanding the physical principles of fuel cells, fluid flow, heat transfer, mass transfer in porous media, electrochemical reactions, multiphase flow with phase change, transport of current and potential field in porous media and solid conducting regions, and water transport across the polymer membrane; and this will result in optimal design process. This paper will show fuel cell models that are used in this analysis. Such as; electrochemical model: predicts local current density, voltage distributions. Potential field model: predicts current and voltage in porous and solid conducting regions. Multiphase mixture model: predicts liquid water and gas flow in the porous diffusion layers. Thin film multiphase model: tracks liquid water flow in gas flow passages. The numerical results of the theoretical modeling are shown in this paper. This paper shows the contour plots of mole fraction of H2O, H2, and O2. Results in this research include the species concentration of H2O, H2, and O2. This research also shows the plot of mass concentration of H2O, H2 and O2.
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Boggs, Chris, Lane Borg, Jason Ostanek, and Mehdi Ahmadian. "Efficient Test Procedures for Characterizing MR Dampers." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-13275.
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The response of a magneto-rheological (MR) damper is often characterized by a force-velocity response plot from a sinusoidal input. These plots are created in a shock dynamometer in which one end of the damper is attached to a load frame and the other end is moved in a sine wave with a given peak velocity and frequency. The peak damper force from a series of sine wave tests of varying peak velocity is measured and plotted as discrete data points versus the relative velocity across the damper. This is a standard procedure for characterizing passive shock absorbers in the automotive industry. The validity of this characterization relies on the assumption that the damper is dominantly a velocity-dependent device. However, it is well-known that the internal dynamics of the damper depend not only on the velocity of the input, but also the frequency of the excitation. Therefore both velocity and frequency should be considered as independent parameters to achieve a more complete characterization of a MR damper's response under sinusoidal excitation. This paper investigates the dependence of the force response to both peak velocity and frequency, for several different MR dampers from a wide variety of applications. By treating the velocity and frequency as two independent parameters, a complete characterization of the damper's response under sinusoidal excitation can be characterized. After investigating how damper force varies with both peak velocity and frequency, efficient test procedures are recommended for future MR damper characterizations.
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Al-Shudeifat, Mohammad A., Lawrence A. Bergman, and Alexander F. Vakakis. "Numerical Investigation of Rotating Nonlinear Energy Sink for Shock Mitigation." In ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/detc2013-13177.
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Passive nonlinear targeted energy transfer (TET) is addressed here by investigating a lightweight rotating nonlinear energy sink (NES). The rotating sink mass has an essentially nonlinear inertial coupling with the two degree-of-freedom linear system (the primary test structure). The proposed rotating NES is numerically investigated where it is found to passively absorb and rapidly dissipate a considerable portion of the initial energy induced by impulse to the linear structure. The parameters of the rotating NES are optimized for the best performance in the vicinity of intermediate and high loads. The fundamental mechanism for significant energy transfer to the NES is its rotational mode; the oscillatory mode of the NES dissipates far less energy. The frequency-energy dependences are investigated through the frequency-energy plot (FEP). Early and strong resonance capture at the lowest modal frequency is observed between the rotator and the structure, at which a significant portion of the induced energy is transferred and dissipated by the rotator. The performance of this device is found to be comparable to existing, stiffness-based NES designs. However, this device is less complicated and more compact.
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Martin, Douglas J., Matthew J. Gadlage, Wai-Yat Leung, and Jeffrey L. Titus. "Enhancing Point Defect Isolation by Using Ionizing Radiation." In ISTFA 2019. ASM International, 2019. http://dx.doi.org/10.31399/asm.cp.istfa2019p0323.
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Abstract An application-specific integrated circuit (ASIC) for a high reliability application is found to have a missing sidewall spacer in a single transistor. Manufacturer burn-in and standard component electrical tests do not capture this defect. The defect manifests after exposure to ionizing radiation. Photon emission microscopy (PEM), laser voltage imaging (LVI), and laserassisted device alteration (LADA) are used to isolate the failure site. At the failure site a focused ion beam (FIB) cross section indicates that a doubly doped drain (DDD) (N+) is likely present where a lightly doped drain (LDD) is designated. This defect leads to a failure mode that is consistent with hot-carrier injection in complementary metal-oxide semiconductor (CMOS) transistors. This paper presents the testability from a fault isolation aspect, shmoo plot characterization, and backside optical techniques to identify its spatial location. A discussion of the results includes why ionizing radiation allowed the defect’s capture and potential implications of using ionizing radiation as a viable failure analysis technique.
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Lall, Pradeep, Jinesh Narangaparambil, Kyle Schulze, and Scott Miller. "Printed Flexible LC Filter Using Additive Micro-Dispensing With Silver Conductive Paste and ECA for Component Attachment." In ASME 2021 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/ipack2021-74073.
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Abstract Filters are used in a variety of signal processing applications in commercial and defense electronics. The use of additively printed electronics in high-frequency applications requires an understanding of the process-performance interactions versus frequency of operation. Assembly of filters for integration into existing circuits requires additively printed metallization traces in addition to component attachment methods. Comparison of frequency response of the additively-printed filtering circuits vs conventional filters subtractively-fabricated on rigid substrates is needed to determine the performance parity of additive fabrication methods. In this paper, a micro-dispensing device is used to print conductive traces and electrically conductive adhesive (ECA) pads for the attachment of components. The effect of different print parameters on the width and height of the trace has been studied. Mechanical and electrical properties also play an important role in the study of different sintering conditions. Optimized parameters from the printing process and sintering analysis are used to print and compare commercially available LC filter circuitry using the Bode plot.
Reports on the topic "Plot device"
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Boyle, M., and Elizabeth Rico. Terrestrial vegetation monitoring at Fort Matanzas National Monument: 2019 data summary. National Park Service, 2022. http://dx.doi.org/10.36967/nrds-2293409.
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The Southeast Coast Network (SECN) conducts long-term terrestrial vegetation monitoring as part of the nationwide Inventory and Monitoring Program of the National Park Service (NPS). The vegetation community vital sign is one of the primary-tier resources identified by SECN park managers, and it is currently conducted at 15 network parks (DeVivo et al. 2008). Monitoring plants and their associated communities over time allows for targeted understanding of ecosystems within the SECN geography, which provides managers information about the degree of change within their parks’ natural vegetation. 2019 marks the first year of conducting this monitoring effort at four SECN parks, including Fort Matanzas National Monument (FOMA). Nine vegetation plots, located on Anastasia and Rattlesnake Islands, were established at Fort Matanzas National Monument in June. Data collected in each plot included species richness across multiple spatial scales, species-specific cover and constancy, species-specific woody stem seedling/sapling counts and adult tree (greater than 10 centimeters [3.9 inches {in}]) diameter at breast height (DBH), overall tree health, landform, soil, observed disturbance, and woody biomass (i.e., fuel load) estimates. This report summarizes the baseline (year 1) terrestrial vegetation data collected at Fort Matanzas National Monument in 2019. Data were stratified across two dominant broadly defined habitats within the park (Maritime Upland Forests/Shrublands and Maritime Open Uplands). Noteworthy findings include: Eighty-two vascular plant taxa (species or lower) were observed across nine vegetation plots, including eight species not previously documented within the park. The most frequently encountered species in each broadly defined habitat included: Maritime Upland Forests and Shrublands: saw palmetto (Serenoa repens), yaupon (Ilex vomitoria), southern/eastern red cedar (Juniperus silicicola + virginiana), American beautyberry (Callicarpa americana), and American burnweed (Erectites hieraciifolius). Maritime Open Uplands: sea oats (Uniola paniculata), earleaf greenbriar (Smilax auriculata), and dixie sandmat (Euphorbia bombensis). ne non-native species, Brazilian pepper (Schinus terebinthifolia), categorized as invasive by the Florida Exotic Pest Plant Council (FLEPPC 2019) was encountered in one Maritime Upland Forest and Shrubland plot during this monitoring effort. There were not any rare plants tracked by the Florida Department of Agriculture and Consumer Services (FDACS 2020) found during this monitoring effort. All plants located in these monitoring plots are fairly common throughout Florida, as well as across the Southeast Coast. Three species observed, however, are on the FDACS 2020 list of commercially exploited plants within the state. These include saw palmetto, cinnamon fern (Osmundastrum cinnamomeum), and coontie (Zamia integrifolia var. umbrosa). Southern/eastern red cedar and cabbage palmetto (Sabal palmetto) were the most dominant species within the tree stratum of the Maritime Upland Forest and Shrubland habitat type. Species that dominated the sapling and seedling strata of this type included yaupon and cabbage palmetto. More than 75% of the trees measured in the parks Maritime Upland Forest and Shrubland habitat type were alive and experiencing healthy vigor. Of the 22 trees that were dead, more than 50% of those were southern/eastern red cedar. Most of those individuals that were observed with moderate or severe decline and greater than 50% dieback were southern/eastern red cedars. Although red bay (Persea borbonia) was identified as one of the “principal understory tree” species within Fort Matanzas National Monument’s maritime forests in 2004 (Zomlefer et al. 2004), tree-sized individuals were rarely detected on plots during this monitoring effort. This may be in part due to the detection of laurel wilt disease within St. Johns County in 2006 (USDA 2021). Based on the low detection...
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Boyle, Maxwell, and Elizabeth Rico. Terrestrial vegetation monitoring at Timucuan Ecological and Historic Preserve: 2019 data summary—Version 2.0. National Park Service, 2022. http://dx.doi.org/10.36967/nrds-2290196.
Full textAbstract:
The Southeast Coast Network (SECN) conducts long-term terrestrial vegetation monitoring as part of the nationwide Inventory and Monitoring Program of the National Park Service (NPS). The vegetation community vital sign is one of the primary-tier resources identified by SECN park managers, and it is currently conducted on 15 network parks (DeVivo et al. 2008). Monitoring plants and their associated communities over time allows for targeted understanding of ecosystems within the SECN geography, which provides managers information about the degree of change within their parks’ natural vegetation. 2019 marks the first year of conducting this monitoring effort on four SECN parks, including Timucuan Ecological and Historic Preserve (TIMU). A total of 23 vegetation plots were established in the park in May and June. Data collected in each plot include species richness across multiple spatial scales, species-specific cover and constancy, species-specific woody stem seedling/sapling counts and adult tree (greater than 10 centimeters [3.9 inches (in)]) diameter at breast height (DBH), overall tree health, landform, soil, observed disturbance, and woody biomass (i.e., fuel load) estimates. This report summarizes the baseline (year 1) terrestrial vegetation data collected at Timucuan Ecological and Historic Preserve in 2019. Data were stratified across three dominant broadly defined habitats within the park (Coastal Plain Nonalluvial Wetlands, Coastal Plain Open Uplands and Woodlands, and Maritime Upland Forests and Shrublands) and three land parcels (Cedar Point, Theodore Roosevelt, and Thomas Creek). Noteworthy findings include: A total of 157 vascular plant taxa (species or lower) were observed across 23 vegetation plots, including nine species not previously known from the park. Three plots were located in the footprint of the Yellow Bluff Fire, and were sampled only two weeks following the fire event. Muscadine (Muscadinia rotundifolia), cat greenbrier (Smilax glauca), water oak (Quercus nigra), and swamp tupelo (Nyssa biflora) were the most frequently encountered species in Coastal Plain Nonalluvial Wetland habitat; saw palmetto (Serenoa repens), slash pine (Pinus elliottii), and gallberry (Ilex glabra) were the most frequently encountered species in Coastal Plain Open Upland and Woodland habitat; and Darlington oak (Quercus hemisphaerica), Spanish moss (Tillandsia usenoides), and red bay (Persea borbonia) were the most frequently encountered species in Maritime Upland Forests and Shrublands. There were no exotic species of the Florida Exotic Pest Plant Council list of invasive plants (FLEPPC 2020) observed on any of these plots. Both red bay and swamp bay (Persea palustris) were largely absent from the tree stratum in these plots; however, they were present (occasionally in high abundance) in the seedling and sapling strata across all habitat types. Buckthorn bully (Sideroxylon lycioides)—listed as Endangered in the state of Florida by the Florida Department of Agriculture and Consumer Services (FDACS 2020)—was observed in three Maritime Upland Forest and Shrubland plots. The tree strata in each broadly defined habitat were dominated by the following species: Coastal Plain Nonalluvial Wetlands-loblolly bay (Gordonia lasianthus) Coastal Plain Open Uplands and Woodlands-longleaf pine (Pinus palustris) Maritime Upland Forests and Shrublands-oaks (Quercus sp.) Most stems within the tree strata exhibited healthy vigor and only moderate dieback across all habitat types. However, there was a large amount of standing dead trees in plots within Maritime Upland Forests and Shrublands. Downed woody biomass (fuel loads) were highest in the Cedar Point and Thomas Creek land parcels.
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Boyle, Maxwell, and Elizabeth Rico. Terrestrial vegetation monitoring at Fort Pulaski National Monument: 2019 data summary. National Park Service, 2021. http://dx.doi.org/10.36967/nrds-2288716.
Full textAbstract:
The Southeast Coast Network (SECN) conducts long-term terrestrial vegetation monitoring as part of the nationwide Inventory and Monitoring Program of the National Park Service (NPS). The vegetation community vital sign is one of the primary-tier resources identified by SECN park managers, and monitoring is currently conducted at 15 network parks (DeVivo et al. 2008). Monitoring plants and their associated communities over time allows for targeted understanding of ecosystems within the SECN geography, which provides managers information about the degree of change within their parks’ natural vegetation. 2019 marks the first year of conducting this monitoring effort on four SECN parks, including Fort Pulaski National Monument (FOPU). Twelve vegetation plots were established at Fort Pulaski National Monument in August. Data collected in each plot included species richness across multiple spatial scales, species-specific cover and constancy, species-specific woody stem seedling/sapling counts and adult tree (greater than 10 centimeters [3.9 inches {in}]) diameter at breast height (DBH), overall tree health, landform, soil, observed disturbance, and woody biomass (i.e., fuel load) estimates. This report summarizes the baseline (year 1) terrestrial vegetation data collected at Fort Pulaski National Monument in 2019. Data were stratified across two dominant broadly defined habitats within the park (Maritime Tidal Wetlands and Maritime Upland Forests and Shrublands). Noteworthy findings include: Sixty-six vascular plant taxa were observed across 12 vegetation plots, including six taxa not previously known from the park. Plots were located on both Cockspur and McQueen’s Island. The most frequently encountered species in each broadly defined habitat included: Maritime Tidal Wetlands: smooth cordgrass (Spartina alterniflora), perennial saltmarsh aster(Symphyotrichum enuifolium), and groundsel tree (Baccharis halimifolia) Maritime Upland Forests and Shrublands: yaupon (Ilex vomitoria), southern/eastern red cedar (Juniperus silicicola + virginiana), and cabbage palmetto (Sabal palmetto). Four non-native species identified as invasive by the Georgia Exotic Pest Plant Council (GA-EPPC 2018) were found during this monitoring effort. These species (and their overall frequency of occurrence within all plots) included: Japanese honeysuckle (Lonicera japonica; 17%), bahiagrass (Paspalum notatum; 8%), Vasey’s grass (Paspalum urvillei; 8%), and European common reed (Phragmites australis; 8%). Two rare plants tracked by the Georgia Department of Natural Resources (GADNR 2013) were found during this monitoring effort. These include Florida wild privet (Forestiera segregata) and Bosc’s bluet (Oldenlandia boscii). Southern/eastern red cedar and cabbage palmetto were the most dominant species within the tree stratum of the maritime Upland Forest and Shrubland habitat type. Species that dominated the sapling and seedling strata of this type included yaupon, cabbage palmetto, groundsel tree, and Carolina laurel cherry (Prunus caroliniana). The health status of sugarberry (Celtis laevigata)—a typical canopy species in maritime forests of the South Atlantic Coastal Plain--observed on park plots appeared to be in decline, with most stems experiencing elevated levels of dieback and low vigor. Over the past decade, this species has been experiencing unexplained high rates of dieback and mortality throughout its range in the Southeastern United States; current research is focusing on what may be causing these alarming die-off patterns. Duff and litter made up the majority of downed woody biomass (fuel loads) across FOPU vegetation plots.
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Mannel, Sylvio, Mark A. Rumble, Maribeth Price, Thomas M. Juntti, and Dong Hua. Comparison of combinations of sighting devices and target objects for establishing circular plots in the field. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, 2006. http://dx.doi.org/10.2737/rmrs-rp-60.
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Boyle, Maxwell, and Elizabeth Rico. Terrestrial vegetation monitoring at Cape Hatteras National Seashore: 2019 data summary. National Park Service, 2022. http://dx.doi.org/10.36967/nrr-2290019.
Full textAbstract:
The Southeast Coast Network (SECN) conducts long-term terrestrial vegetation monitoring as part of the nationwide Inventory and Monitoring Program of the National Park Service (NPS). The vegetation community vital sign is one of the primary-tier resources identified by SECN park managers, and monitoring is currently conducted at 15 network parks (DeVivo et al. 2008). Monitoring plants and their associated communities over time allows for targeted understanding of ecosystems within the SECN geography, which provides managers information about the degree of change within their parks’ natural vegetation. The first year of conducting this monitoring effort at four SECN parks, including 52 plots on Cape Hatteras National Seashore (CAHA), was 2019. Twelve vegetation plots were established at Cape Hatteras NS in July and August. Data collected in each plot included species richness across multiple spatial scales, species-specific cover and constancy, species-specific woody stem seedling/sapling counts and adult tree (greater than 10 centimeters [3.9 inches {in}]) diameter at breast height (DBH), overall tree health, landform, soil, observed disturbance, and woody biomass (i.e., fuel load) estimates. This report summarizes the baseline (year 1) terrestrial vegetation data collected at Cape Hatteras National Seashore in 2019. Data were stratified across four dominant broadly defined habitats within the park (Maritime Tidal Wetlands, Maritime Nontidal Wetlands, Maritime Open Uplands, and Maritime Upland Forests and Shrublands) and four land parcels (Bodie Island, Buxton, Hatteras Island, and Ocracoke Island). Noteworthy findings include: A total of 265 vascular plant taxa (species or lower) were observed across 52 vegetation plots, including 13 species not previously documented within the park. The most frequently encountered species in each broadly defined habitat included: Maritime Tidal Wetlands: saltmeadow cordgrass Spartina patens), swallow-wort (Pattalias palustre), and marsh fimbry (Fimbristylis castanea) Maritime Nontidal Wetlands: common wax-myrtle (Morella cerifera), saltmeadow cordgrass, eastern poison ivy (Toxicodendron radicans var. radicans), and saw greenbriar (Smilax bona-nox) Maritime Open Uplands: sea oats (Uniola paniculata), dune camphorweed (Heterotheca subaxillaris), and seabeach evening-primrose (Oenothera humifusa) Maritime Upland Forests and Shrublands: : loblolly pine (Pinus taeda), southern/eastern red cedar (Juniperus silicicola + virginiana), common wax-myrtle, and live oak (Quercus virginiana). Five invasive species identified as either a Severe Threat (Rank 1) or Significant Threat (Rank 2) to native plants by the North Carolina Native Plant Society (Buchanan 2010) were found during this monitoring effort. These species (and their overall frequency of occurrence within all plots) included: alligatorweed (Alternanthera philoxeroides; 2%), Japanese honeysuckle (Lonicera japonica; 10%), Japanese stilt-grass (Microstegium vimineum; 2%), European common reed (Phragmites australis; 8%), and common chickweed (Stellaria media; 2%). Eighteen rare species tracked by the North Carolina Natural Heritage Program (Robinson 2018) were found during this monitoring effort, including two species—cypress panicgrass (Dichanthelium caerulescens) and Gulf Coast spikerush (Eleocharis cellulosa)—listed as State Endangered by the Plant Conservation Program of the North Carolina Department of Agriculture and Consumer Services (NCPCP 2010). Southern/eastern red cedar was a dominant species within the tree stratum of both Maritime Nontidal Wetland and Maritime Upland Forest and Shrubland habitat types. Other dominant tree species within CAHA forests included loblolly pine, live oak, and Darlington oak (Quercus hemisphaerica). One hundred percent of the live swamp bay (Persea palustris) trees measured in these plots were experiencing declining vigor and observed with symptoms like those caused by laurel wilt......less
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Boyle, M., and Elizabeth Rico. Terrestrial vegetation monitoring at Cumberland Island National Seashore: 2020 data summary. National Park Service, 2022. http://dx.doi.org/10.36967/2294287.
Full textAbstract:
The Southeast Coast Network (SECN) conducts long-term terrestrial vegetation monitoring as part of the nationwide Inventory and Monitoring Program of the National Park Service (NPS). The vegetation community vital sign is one of the primary-tier resources identified by SECN park managers, and it is currently conducted at 15 network parks (DeVivo et al. 2008). Monitoring plants and their associated communities over time allows for targeted understanding of ecosystems within the SECN geography, which provides managers information about the degree of change within their parks’ natural vegetation. 2020 marks the first year of conducting this monitoring effort at Cumberland Island National Seashore (CUIS). Fifty-six vegetation plots were established throughout the park from May through July. Data collected in each plot included species richness across multiple spatial scales, species-specific cover and constancy, species-specific woody stem seedling/sapling counts and adult tree (greater than 10 centimeters [3.9 inches {in}]) diameter at breast height (DBH), overall tree health, landform, soil, observed disturbance, and woody biomass (i.e., fuel load) estimates. This report summarizes the baseline (year 1) terrestrial vegetation data collected at Cumberland Island National Seashore in 2020. Data were stratified across three dominant broadly defined habitats within the park, including Coastal Plain Upland Open Woodlands, Maritime Open Upland Grasslands, and Maritime Upland Forests and Shrublands. Noteworthy findings include: 213 vascular plant taxa (species or lower) were observed across 56 vegetation plots, including 12 species not previously documented within the park. The most frequently encountered species in each broadly defined habitat included: Coastal Plain Upland Open Woodlands: longleaf + pond pine (Pinus palustris; P. serotina), redbay (Persea borbonia), saw palmetto (Serenoa repens), wax-myrtle (Morella cerifera), deerberry (Vaccinium stamineum), variable panicgrass (Dichanthelium commutatum), and hemlock rosette grass (Dichanthelium portoricense). Maritime Open Upland Grasslands: wax-myrtle, saw greenbrier (Smilax auriculata), sea oats (Uniola paniculata), and other forbs and graminoids. Maritime Upland Forests and Shrublands: live oak (Quercus virginiana), redbay, saw palmetto, muscadine (Muscadinia rotundifolia), and Spanish moss (Tillandsia usneoides) Two non-native species, Chinaberry (Melia azedarach) and bahiagrass (Paspalum notatum), categorized as invasive by the Georgia Exotic Pest Plant Council (GA-EPPC 2018) were encountered in four different Maritime Upland Forest and Shrubland plots during this monitoring effort. Six vascular plant species listed as rare and tracked by the Georgia Department of Natural Resources (GADNR 2022) were observed in these monitoring plots, including the state listed “Rare” Florida swampprivet (Forestiera segregata var. segregata) and sandywoods sedge (Carex dasycarpa) and the “Unusual” green fly orchid (Epidendrum conopseum). Longleaf and pond pine were the most dominant species within the tree stratum of Coastal Plain Upland Open Woodland habitat types; live oak was the most dominant species of Maritime Upland Forest and Shrubland types. Saw palmetto and rusty staggerbush (Lyonia ferruginea) dominated the sapling stratum within Maritime Upland Forest and Shrubland habitat types. Of the 20 tree-sized redbay trees measured during this monitoring effort only three were living and these were observed with severely declining vigor, indicating the prevalence and recent historical impact of laurel wilt disease (LWD) across the island’s maritime forest ecosystems. There was an unexpectedly low abundance of sweet grass (Muhlenbergia sericea) and saltmeadow cordgrass (Spartina patens) within interdune swale plots of Maritime Open Upland habitats on the island, which could be a result of grazing activity by feral horses. Live oak is the dominant tree-sized species across...
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