Готові списки джерел за темами / Stress visivo

Добірка наукової літератури з теми "Stress visivo"

Автор: Grafiati

Опубліковано: 14 березня 2023

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Статті в журналах з теми "Stress visivo"

Close, T. J. "The Barley Microarray. A Community Vision and Application to Abiotic Stress." Czech Journal of Genetics and Plant Breeding 41, No. 4 (November 21, 2011): 144–52. http://dx.doi.org/10.17221/3660-cjgpb.

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A microarray chip representing approximately 20 000 barley unigenes was produced as part of a USA project entitled “An integrated physical and expression map of barley for Triticeae improvement”. The content of the chip was derived from more than 400 000 barley “Expressed Sequence Tag” (EST) sequences received from cooperators inUSA,Germany,Australia,Japan,Scotland, andFinland, plus about 1000 sequences retrieved from the GenBank nr database or GrainGenes. All EST sequences were trimmed to high quality regions, contaminants were identified and removed, and the remaining information was compiled using the CAP3 assembly program. A “stringent” assembly (paralogs separated) contained about 53 000 “unigenes” (the sum of contigs plus singletons), among which about 50% had reliable 3' ends and were therefore suitable for chip content. From these, probe sets were designed and the “Barley1” chip fabricated by Affymetrix. Complete details on the content of the barley microarray, and enhanced probe-set annotations, can be obtained using the software HarvEST:Barley, available from http://harvest.ucr.edu. The availability of an Affymetrix barley microarray has facilitated the study of gene expression on a large scale. Replicated experiments have revealed commonalities and differences between responses to abiotic stresses, and inherent differences between barley genotypes. The design and a brief summary of the results of drought stress experiments are stated.  

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Zhou Wu, 周骛, 王芳婷 Wang Fangting, 王宵宵 Wang Xiaoxiao, 唐欣然 Tang Xinran та 蔡小舒 Cai Xiaoshu. "基于双目视觉多曝光的粒子轨迹测速方法研究". Acta Optica Sinica 41, № 12 (2021): 1215001. http://dx.doi.org/10.3788/aos202141.1215001.

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Christal Joenso, Reivandy. "Serial Vision as a Character Forming Element of Visual Corridors Diponegoro Street Salatiga." Engineering and Technology Journal 07, no. 10 (October 14, 2022): 1576–83. http://dx.doi.org/10.47191/etj/v7i10.05.

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Diponegoro Street is one of the main roads in Salatiga City, where there are still many buildings from the Dutch Colonial and vegetation in the form of large trees which visually gives its own characteristics and can describe Salatiga City as a resting place in the past. Over time, the Diponegoro road underwent a physical change in line with urban needs. It is feared that there will be a shift in the visual character so that this study aims to determine the visual character of the corridor which can be done through serial vision analysis. The method used is a descriptive exploratory approach where the researcher acts as the main instrument in digging and analyzing field data. The results show that the character of the Diponegoro Street corridor as a heritage area of the Dutch Colonial is getting stronger towards the east which is marked by the dominance of the Dutch Colonial buildings, vegetation in the form of large trees, and elements on street furniture with classical designs.

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Cipolli, Carlo, and Pio Enrico Ricci Bitti. "La nascita e lo sviluppo della Psicologia nell'Università di Bologna dal 1950." RICERCHE DI PSICOLOGIA, no. 2 (October 2021): 61–84. http://dx.doi.org/10.3280/rip2021oa12597.

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Renzo Canestrari (1924-2017) è stato uno dei più prestigiosi psicologi italiani del XX secolo. È stato professore ordinario di Psicologia (poi Psicologia generale) nella Facoltà di Medicina e Chirurgia dal 1960 al 1999. Laureato in Pedagogia nel 1946 e in Medicina e Chirurgia nel 1951, ha effettuato un'attività di ricerca in vari ambiti della psicologia sperimentale ed evolutiva, ovvero la percezione visiva (utilizzando paradigmi della psicologia della Gestalt e del funzionalismo) e il funzionamento dei processi cognitivi ed emozionali nei bambini e negli adolescenti. Ha esercitato anche un ruolo importante nella promozione di studi collaborativi (condotti con metodiche diagnostiche, psicometriche e strumentali) tra psicologi e clinici medici sulle relazioni tra stress e sintomi di varie patologie psicosomatiche, favorendo in tal modo la crescita della Psicologia Clinica nelle Facoltà italiane di Medicina e Chirurgia. Fin dagli ultimi anni '60 ha fornito a molti giovani ricercatori collaboratori l'opportunità di fare ricerca nel suo Istituto di Psicologia, nel quale vi era un numero rilevante di laboratori per la ricerca sperimentale e di ambulatori per attività diagnostiche e psicoterapiche su bambini e adolescenti. Il risultato più importante della sua lunga attività didattica è stato l'inserimento della Psicologia generale e della Psicologia clinica nel core curriculum della laurea magistrale in Medicina e Chirurgia e nelle lauree delle professioni sanitarie.

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Ahmed, Solaiman, Tanveer Ahmed Bhuiyan, and Manabu Nii. "PPG Signal Morphology-Based Method for Distinguishing Stress and Non-Stress Conditions." Journal of Advanced Computational Intelligence and Intelligent Informatics 26, no. 1 (January 20, 2022): 58–66. http://dx.doi.org/10.20965/jaciii.2022.p0058.

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In this study, the morphology of the PPG signal has been analyzed to be a potential cardiovascular marker for physiological stress. The morphology of the PPG signal was quantified as signal quality index by comparing the template beat (extracted from resting conditions) to the PPG beats recorded during vigorous physical activity. Data was taken from eight subjects where they performed some physical activities ranging from low to high intensity. It was found that, the mean and standard deviation of correlation coefficient between non-stress condition template beat and annotated PPG beat, 89.43±5.17 (%) and 44.23±10.48 (%) for non-stress and stress beat respectively with P value of 2.04*10-06 shows significantly difference between correlation coefficients (stress and non-stress). Whereas, mean and standard deviation of dynamic time warping correlation coefficients are 93.43±5.06 (%) and 85.93±4.18 (%) for non-stress and stress beat respectively with P value of .04. The morphology results corroborate the findings from the traditional HRV parameters generally used for stratifying stress.

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Chalifoux, Brandon D., Ralf K. Heilmann, and Mark L. Schattenburg. "Correcting flat mirrors with surface stress: analytical stress fields." Journal of the Optical Society of America A 35, no. 10 (September 17, 2018): 1705. http://dx.doi.org/10.1364/josaa.35.001705.

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Shan, Yuhao, Shigang Li, and Tong Chen. "Respiratory signal and human stress: non-contact detection of stress with a low-cost depth sensing camera." International Journal of Machine Learning and Cybernetics 11, no. 8 (February 24, 2020): 1825–37. http://dx.doi.org/10.1007/s13042-020-01074-x.

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Hong, Kan, Guodong Liu, Wentao Chen, and Sheng Hong. "Classification of the emotional stress and physical stress using signal magnification and canonical correlation analysis." Pattern Recognition 77 (May 2018): 140–49. http://dx.doi.org/10.1016/j.patcog.2017.12.013.

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Lu, Jingli, Ruili Wang, and Liyanage C. De Silva. "Automatic stress exaggeration by prosody modification to assist language learners perceive sentence stress." International Journal of Speech Technology 15, no. 2 (November 11, 2011): 87–98. http://dx.doi.org/10.1007/s10772-011-9124-2.

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Rietveld, A. C. M., and F. J. Koopmans-van Beinum. "Vowel reduction and stress." Speech Communication 6, no. 3 (September 1987): 217–29. http://dx.doi.org/10.1016/0167-6393(87)90027-6.

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Дисертації з теми "Stress visivo"

INAMA, MARCO. "Three-Dimensional vs Two-Dimensional Minimally Invasive Surgery. A comparison of the visual work load and surgical outcomes." Doctoral thesis, Politecnico di Torino, 2018. http://hdl.handle.net/11583/2710181.

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BACKGROUND Three-dimensional (3D) imaging, a recent technical innovation in laparoscopic surgery, has been introduced to enhance depth perception and facilitate operations. The clear benefit of the 3D laparoscopy has never been tested. Some concerns emerged regarding the possible negative effects over the visual system in those surgeons who performed 3D surgery every day. 3D laparoscopy has been validated both in “in-vitro” and “in-vivo” (clinical) settings. All survey done in laparoscopic simulator comparing surgical exercise (suturing, peg transfer, cutting) performed with 2D or 3D system reported better results in the second group, regardless the surgeon experience. Less data is disposable in the clinical setting, but with same conclusions. The use of 3D technology needs passive or active polarized glasses. Optometric tests, objective exams (RMN or EEG) and subjective questionnaires have been widely used to evaluate the alterations in the visual system utilizing the 3D technology. Each test concluded that 3D technology causes alteration in the EEG waves, but how long these alterations last is still unknown. AIM The aim of this study was to evaluate the possible benefit of using the 3D technology in terms of surgical outcomes (study 1) and to evaluate the alterations over the visual system operating in 3D laparoscopy (study 2). MATERIALS AND METHODS The study was a single-center prospective observational clinical trial, divided in two sub-study with a single patients-population. Participants included patients aged 18 years old and above, eligible for colorectal resections for neoplastic or inflammatory diseases. Four experienced surgeons in colorectal and laparoscopic surgery participated in the study. Each surgeon followed the standard laparoscopic surgical rules performing the different type of colorectal resection, regardless the study subgroup. Data were collected at the pre-operative clinic, during surgery, during the hospitalizations and at the short term follow-up (30th days). For each study, there was a primary endpoint: 1. Primary endpoint for Study 1: incidence of Clavien grade 3, 4 and 5 postsurgical complications in patients undergone 3D colorectal resection; 2. Primary endpoint for Study 2: to grade the visual work load of surgeons operating with 3D screens and glasses. At the end of each procedure (2D or 3D) the first surgeon had to fill in two different subjective questionnaire (the NASA task load index questionnaire and the Simulator Sickness questionnaire) to grade the visual sickness felt during the operation. RESULTS From January 2015 to September 2017, 313 patients were enrolled in the study: 82 in the 2D group, 231 in the 3D group. STUDY 1: Colorectal cancer was the main indication for surgery (n 235, 75.1%), followed by colonic diverticulosis, benign polyposis and inflammatory bowel diseases (IBD), respectively 43 (13.8 %), 25 (7.9 %) and 10 (3.2 %). Age, sex, ASA score were comparable between the two groups. The median operative time showed no statistically significant difference between the 3D and 2D groups (p 0.611). Less drains were positioned at the end of the 3D operations comparing with 2D procedures (p 0.013). The stapled anastomosis was the most frequent performed over other techniques. The other intra-operative findings showed no significant difference between the two study groups. The median hospitalization and the reoperation rate showed no difference between the two groups. STUDY 2: The statistical analysis done over all 313 cases divided in 2D and 3D did not reveled significant difference of the visual work scored by the NASA TLX. Data emerging from the SSQ questionnaire reveled no case of moderate or severe symptoms in both groups. CONCLUSIONS 3D laparoscopic surgery had the same postoperative results of the 2D standard laparoscopy. The more frequent intra-abdominal anastomosis in the 3D group might suggest a more safeness felt by the surgeon using the new technology. The NASA TLX and the SSQ questionnaire did not reveled significant difference of the visual work between 2D and 3D vision.

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Li, Hong. "College stress and psychological well-being : vision in life as a coping resource /." Hong Kong : University of Hong Kong, 2002. http://sunzi.lib.hku.hk/hkuto/record.jsp?B25017408.

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Yekta, Karizbala A. A. "The clinical significance of fixation disparity in binocular vision." Thesis, University of Bradford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233694.

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Li, Hong, and 李虹. "College stress and psychological well-being: vision in life as a coping resource." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B31243344.

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Nguyen, Cong Uy. "Hybrid stress visco-plasticity : formulation, discrete approximation, and stochastic identification." Thesis, Compiègne, 2022. http://www.theses.fr/2022COMP2695.

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Dans cette thèse, une nouvelle approche est développée pour les problèmes de viscoplasticité et de dynamique non linéaire. En particulier, les équations variationnelles sont élaborées selon le principe de Helligner-Reissner, de sorte que les champs de contrainte et de déplacement apparaissent comme des champs inconnus sous la forme faible. Trois nouveaux éléments finis sont développés. Le premier élément fini est formulé pour le problème axisymétrique, dans lequel le champ de contraintes est approximé par des polynômes d’ordre inférieur tels que des fonctions linéaires. Cette approche donne des solutions précises spécifiquement dans les problèmes incompressibles et rigides. De plus, un élément fini de flexion de membrane et de plaque est nouvellement conçu en discrétisant le champ de contraintes en utilisant l’espace vectoriel de Raviart-Thomas d’ordre le plus bas RT0. Cette approche garantit la continuité du champ de contraintes sur tout un domaine discret, ce qui est un avantage significatif dans la méthode numérique, notamment pour les problèmes de propagation des ondes. Les développements sont effectués pour le comportement constitutif visco-plastique des matériaux, où les équations d’évolution correspondantes sont obtenues en faisant appel au principe de dissipation maximale. Pour résoudre les équations d’équilibre dynamique, des schémas de conservation et de décroissance de l’énergie sont formulés en conséquence. Le schéma de conservation de l’énergie est inconditionnellement stable, car il peut préserver l’énergie totale d’un système donné sous une vibration libre, tandis que le schéma décroissant peut dissiper des modes de vibration à plus haute fréquence. La dernière partie de cette thèse présente les procédures d’upscaling du comportement des matériaux visco-plastiques. Plus précisément, la mise à l’échelle est effectuée par une méthode d’identification stochastique via une mise à jour baysienne en utilisant le filtre de Gauss-Markov-Kalman pour l’assimilation des propriétés importantes des matériaux dans les régimes élastique et inélastique
In this thesis, a novel approach is developed for visco-plasticity and nonlinear dynamics problems. In particular, variational equations are elaborated following the Helligner-Reissner principle, so that both stress and displacement fields appear as unknown fields in the weak form. Three novel finite elements are developed. The first finite element is formulated for the axisymmetric problem, in which the stress field is approximated by low-order polynomials such as linear functions. This approach yields accurate solutions specifically in incompressible and stiff problems. In addition, a membrane and plate bending finite element are newly designed by discretizing the stress field using the lowest order Raviart-Thomas vector space RT0. This approach guarantees the continuity of the stress field over an entire discrete domain, which is a significant advantage in the numerical method, especially for the wave propagation problems. The developments are carried out for the viscoplastic constitutive behavior of materials, where the corresponding evolution equations are obtained by appealing to the principle of maximum dissipation. To solve the dynamic equilibrium equations, energy conserving and decaying schemes are formulated correspondingly. The energy conserving scheme is unconditional stable, since it can preserve the total energy of a given system under a free vibration, while the decaying scheme can dissipate higher frequency vibration modes. The last part of this thesis presents procedures for upscaling of the visco-plastic material behavior. Specifically, the upscaling is performed by stochastic identification method via Baysian updating using the Gauss-Markov-Kalman filter for assimilation of important material properties in the elastic and inelastic regimes

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Crotogino, Jennifer. "Visual stress in migraine : subjective and psychophysiological responses to intense visual stimulation." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=38475.

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This dissertation assesses whether intense visual stimulation can act as a stressor to migraine sufferers between attacks, and whether subjective and psychophysiological reactions to these stimuli can clarify how migraine attacks may be triggered.
The first study assessed thresholds of light-induced discomfort and pain in migraine sufferers and non-migrainous controls during a non-headache period. Two instruction sets were compared to assess whether information presented to participants would affect thresholds. The results showed that migraineurs had significantly lower thresholds for light-induced pain. However, this effect was most apparent in those who had heard the negatively biased instructions reinforcing the need to control contextual factors when assessing subjective phenomena such as visual discomfort.
The second study assessed subjective and psychophysiological responses of female migraine sufferers and female controls during exposure to visual stimuli incorporating spatial and temporal characteristics that are most likely to be bothersome to migraineurs. Two control stimuli were included to assess responses during similar, but theoretically less aversive conditions. Migraine sufferers had higher heart rate and more frequent electrodermal responses than controls at all points of the study, including baseline and recovery. However, while migraineurs reported higher anxiety during the intense conditions, and reported more visual and somatic complaints than controls during various viewing conditions, they did not show heart rate, heart rate variability or electrodermal changes that would suggest clear changes in autonomic function in response to aversive visual stimulation.
The third study assessed ambulatory electrocardiograms to investigate whether autonomic changes would be evident in the period leading up to, during or following a migraine. Three individuals were assessed on a day when they experienced a naturally occurring headache, and on a day when they were not. No obvious pattern of autonomic change was detected before or after headache, although there was some evidence that a pattern of increased heart rate and decreased vagal tone may accompany headache.
In summary, the results confirm that migraine sufferers are more sensitive to intense visual stimulation than controls, but do not support the contention that exposure results in widespread autonomic changes. Since interictal visual discomfort is a common in migraine, further research is needed to clarify how it can be incorporated into models of migraine pathophysiology.

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Hill, N. J. "Visco-plastic and thermal stress analysis in the continuous casting of steel." Thesis, Teesside University, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376088.

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GONZALES, GIANCARLO LUIS GOMEZ. "MEASUREMENT OF ELASTOPLASTIC STRAINS AT STRESS CONCENTRATION REGIONS USING MESHLESS METHODS AND COMPUTER VISION." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2014. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=24993@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO
CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
A análise de deformações em torno de regiões de concentração de tensões é uma importante ferramenta na avaliação da integridade estrutural de peças e componentes mecânicos. Todavia, esta análise se torna mais complexa quando o material atinge a plastificação junto ao entalhe. Neste trabalho, uma nova metodologia numérico-experimental para medição de deformações na superfície de um material, combinando métodos sem malha e visão computacional, é apresentada. A parte experimental da técnica é baseada na captura de imagens de um material em estados diferentes de deformação durante um ensaio mecânico. A técnica de visão computacional conhecida como Scale Invariant Feature Tecnique (SIFT) é utilizada aqui para extrair pontos característicos nas imagens capturadas. Para tanto, uma textura aleatória foi pintada na superfície do corpo de prova. Em seguida, os deslocamentos são obtidos experimentalmente, através do seguimento das posições dos pontos SIFT corretamente correspondidos no par de imagens capturadas do ensaio, antes e depois da aplicação da carga. Os pontos fornecidos pelo algoritmo SIFT são selecionados como nós de uma formulação sem malha, e o método de mínimos quadrados móveis é utilizado para gerar uma aproximação numérica do campo de deslocamentos e as suas derivadas. Assim, deformações na região próxima ao entalhe são devidamente quantificadas para posterior análise. Na validação da metodologia proposta, corpos de prova entalhados foram utilizados para estudar o comportamento da deformação plástica nas regiões de concentração de tensões. Os resultados dos testes mostraram boa concordância e precisão quando comparados com soluções analíticas, simulações pelo método dos elementos finitos (ANSYS) e soluções obtidas através de um software comercial de correlação de imagens digitais.
Strain analysis near stress concentration regions is an important tool for structural integrity of mechanical components. However, this analysis becomes more complex when the material starts to deform plastically near the notch root. In this work, a novel experimental-numerical technique for the measurement of the strain distribution on the surface of a deformable body is described, which uses meshless methods and computer vision. The experimental part of this technique is based on the capture of images at different stages of material deformation during a mechanical test. The Scale Invariant Feature Transform (SIFT) is a computer vision algorithm used here to extract distinctive points or features in the captured images. For this purpose, a random texture was painted on the specimen surface. Then, the displacements are experimentally obtained by tracking the positions of successfully matched SIFT points in an undeformeddeformed pair of images. The points provided by SIFT are selected as nodes in a meshless formulation and the moving least square method is used to generate a numerical approximation for the displacement field and its derivates. Thus, the corresponding strain field close to the notch is calculated. To validate the proposed methodology, notched specimens were employed to study the deformation behavior on regions of stress concentration. Experimental results showed good agreement and accuracy when compared to analytical solutions, to simulations by finite elements (ANSYS) and to solutions obtained by using a commercial software based on the digital image correlation technique.

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Greenwood, Verity Jane. "The effects of the artificial light environment on avian behaviour and physiological indicators of stress." Thesis, University of Bristol, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.274670.

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Lyra, Cassandra Santantonio de. "A aromaterapia científica na visão psiconeuroendocrinoimunológica: um panorama atual da aromaterapia clínica e científica no mundo e da psiconeuroendocrinoimunologia." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/47/47134/tde-11032010-103420/.

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Esse estudo é um estudo teórico, baseado em revisão bibliográfica. Ele objetivou a construção de um panorama conceitual da aromaterapia, considerandose sua história e desenvolvimento, além de propor um modelo integrativo dos aspectos fisiológicos e psicossociais com base nas premissas psiconeuroendocrinoimunológicas. Aromaterapia é uma prática milenar, que passou por diversas mudanças ao longo da história e por esse motivo, atualmente, apresentase conceitualmente confusa e imprecisa. Seu ressurgimento nos anos 30 permitiu um início da visão científica do assunto, que, no entanto, evoluiu lentamente pelas dificuldades metodológicas encontradas. A organização do panorama atual dessa terapia permitiu observar que existem muitos países que estudam a aromaterapia, no entanto, com abordagens e visões distintas, de modo que tornase complexa a intersecção dos estudos. No seu estudo científico diversos elementos devem ser aqui considerados, como tipo de estudo (teórico, préclínico ou clínico), variáveis a serem controladas (farmacológicas, dos sujeitos e de procedimento) e questões abordadas (quanto ao efeito dos óleos essenciais, quanto aos seus mecanismos de ação e quanto à influência das variáveis em ambos). Além disso, atualmente existem diversas abordagens: filosófica (baseada em filosofias de saúde orientais), psicológica (baseada no conceito de memória olfativa), farmacoquímica (baseada em farmacologia e química dos óleos essenciais), neurológica (baseada nas neurociências) e psiconeuroendocrinoimunológica (baseada na psiconeuroendocrinoimunologia). Esse trabalho se focou nos estudos préclínicos e clínicos de aromaterapia, a partir de uma visão psiconeuroendocrinoimunológica. A fim de servir como um passo inicial à padronização científica do assunto, foi proposto uma definição mais objetiva de aromaterapia, a partir da qual o trabalho foi desenvolvido. Dentro do modelo psiconeuroendocrinoimunológico, a aromaterapia pode ter efeitos diretos ou indiretos nos sistemas nervoso, endócrino, imune e psicológico, sendo esses efeitos tanto fisiológicos quanto psicológicos e dados por mecanismos de ação farmacológicos e olfativos. Os aromas sempre têm efeitos farmacológicos, independente da via de aplicação utilizada, no entanto, quando se utiliza a via inalatória, são acrescidos a esses efeitos farmacológicos os efeitos olfativos, que são próprios do sistema olfativo e diferenciados. O estudo do olfato é indispensável para o entendimento científico da aromaterapia e ele tem se desenvolvido amplamente, apesar de que ainda existem muitos elementos a serem esclarecidos. Com isso, os estudos na área da aromaterapia científica tem evoluído cada vez mais, permitindo estudos mais minuciosos e conclusivos a respeito do funcionamento dos óleos essenciais no organismo e na mente. Um caminho pra esses estudos, dentro do modelo psiconeuroendocrinoimunológico, é o estudo da relação entre aromaterapia e stress. A premissa básica da teoria de stress é estudar a integração do corpo e da psique. Esse estudo concluiu que a psiconeuroendocrinoimunologia é um modelo útil para estudar a aromaterapia, por permitir o seu estudo científico integrando seus efeitos fisiológicos e psicológicos, e que a organização realizada permitiu uma fundamentação teórica para a elaboração, em futuros projetos na área, de métodos científicos em aromaterapia, stress e psiconeuroendocrinoimunologia.
This is a theoretical study, based on bibliographical revision. It aimed to build a conceptual panorama of aromatherapy, considering it\'s history and development, and also propose an integrative model of the physiological and psychosocial aspects, based on the psychoneuroendocrineimmunological premisses. Aromatherapy is a millenarian practice, that suffered many changes throughout history, and, for this reason, nowadays, it is confusing and uncertain. It\'s reappearance in the 30\'s permitted a start of the scientific view of the theme. However, the scientific view evolved slowly because of the methodological difficulties that were found. The organization of the current panorama of this therapy permitted observing that many countries study aromatherapy. However, there are many different approaches and views of the subject, in a way that it\'s complex to do the intersection of the studies. In it\'s scientific study there are many elements to be considered, such as type of study (theoretical, preclinical or clinical), variables to control pharmacological, subject and procedural) and questions studied (about the effects of essential oils, about their action mechanisms and about the influence of the variables on both). Furthermore, currently there are many approaches to the study: philosophical (based on oriental heath philosophy), psychological (based on the concept of olfactory memory), pharmacochemical (based of pharmacology and essential oil chemistry), neurological (based on neuroscience) and psychoneuroendocrineimmunological (based on psychoneuroendocrineimmunology). This work focused on preclinical and clinical studies, from a psychoneuroendocrineimmuneological point of view. In order to serve as a first step to the scientific standardizing of the subject, a more objective definition of aromatherapy was proposed, from which the study developed the subject. In the psychoneuroendocrineimmunological model, aromatherapy may have direct or indirect effects in the nervous, endocrine, immune and psychological systems. These effects can be physiological and psychological and they are caused by pharmacological and olfactory mechanisms. Aromas always have pharmacological effects, independently from application via, but when the inhalation is used the olfactory effects are added to these pharmacological effects. The olfactory effects are different from the others and characteristic of the olfactory system. The study of olfaction is indispensable to the scientific understanding of aromatherapy and it has evolved immensely, although there are still many elements still to be understood. Consequently, the studies in aromatherapy also have evolved more, permitting more minute and conclusive studies about the functioning of essential oils in the organism and mind. A path to this kind of study, in the psychoneuroendocrineimmunological model, is the study of the interaction between aromatherapy and stress. The basic premiss of the theory of stress is to study the integration of body and mind. This study concluded that psychoneuroendocrineimmunology is a useful model to study aromatherapy because it permits the scientific evaluation of both physiological and psychological effects of aromatherapy. It also concluded that the organization of the current panorama permitted a theoretical foundation for elaboration of scientific methods in aromatherapy, stress and psychoneuroendocrineimmunology in future studies.

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Книги з теми "Stress visivo"

Godnig, Edward C. Computers & visual stress: Stayinghealthy. Grand Rapids, Mich: Abacus, 1991.

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Wilkins, Arnold J., and Bruce J. W. Evans. Vision, Reading Difficulties, and Visual Stress. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-03930-0.

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Godnig, Edward C. Computers & visual stress: Staying healthy. Grand Rapids, MI: Abacus, 1991.

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Visual stress. Oxford: Oxford University Press, 1995.

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Paek, Sang-ŭn. Vision: Show the vision! watch the vision! it's cool = Pijyŏn. Sŏul T'ŭkpyŏlsi: Sŏul K'omiksŭ, 2000.

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Danuser, Brigitta, and Viviane Gonik. Die Arbeit, eine Re-Vision: Le travail, une re-vision. Zürich: Chronos, 2013.

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Godnig, Edward C. Computers and visual stress: How to enhance visual comfort while using computers. Charlestown, R.I: Seacoast Information Services, 1990.

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Dytar, Jean. La vision de Bacchus. [Paris]: Delcourt, 2013.

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L'IRA dei murales: Il linguaggio visivo nella lotta indipendentista nordirlandese a Belfast e Derry. Massa: Eclettica, 2011.

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Voss, Friedrich. Den Kanzler im Visier: 20 Jahre mit Franz Josef Strauss. Mainz: v. Hase & Koehler, 2000.

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Частини книг з теми "Stress visivo"

Wilkins, Arnold J., and Bruce J. W. Evans. "Binocular Vision and Accommodative Anomalies." In Vision, Reading Difficulties, and Visual Stress, 37–72. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-03930-0_3.

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Yee, John William. "Near-Point Stress." In The Neurological Treatment for Nearsightedness and Related Vision Problems, 19–24. Toronto; New Jersey: Apple Academic Press, 2020.: Apple Academic Press, 2019. http://dx.doi.org/10.1201/9780429465048-4.

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Wilkins, Arnold J., and Bruce J. W. Evans. "Correction to: Vision, Reading Difficulties, and Visual Stress." In Vision, Reading Difficulties, and Visual Stress, C1. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-03930-0_13.

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Wilkins, Arnold J., and Bruce J. W. Evans. "Refractive Errors and Ocular Health." In Vision, Reading Difficulties, and Visual Stress, 19–36. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-03930-0_2.

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Wilkins, Arnold J., and Bruce J. W. Evans. "Other Potential Uses of Coloured Filters in the Clinic." In Vision, Reading Difficulties, and Visual Stress, 293–321. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-03930-0_11.

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Wilkins, Arnold J., and Bruce J. W. Evans. "Introduction." In Vision, Reading Difficulties, and Visual Stress, 1–17. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-03930-0_1.

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Wilkins, Arnold J., and Bruce J. W. Evans. "Coloured Filters—Early Studies." In Vision, Reading Difficulties, and Visual Stress, 143–68. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-03930-0_6.

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Wilkins, Arnold J., and Bruce J. W. Evans. "The Magnocellular-Dorsal (M-D) Deficit and Associated Theories." In Vision, Reading Difficulties, and Visual Stress, 99–141. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-03930-0_5.

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Wilkins, Arnold J., and Bruce J. W. Evans. "Coloured Filters: Clinical Tools." In Vision, Reading Difficulties, and Visual Stress, 225–51. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-03930-0_9.

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Wilkins, Arnold J., and Bruce J. W. Evans. "Clinical Protocol." In Vision, Reading Difficulties, and Visual Stress, 253–91. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-03930-0_10.

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Тези доповідей конференцій з теми "Stress visivo"

Desai, Pruthvesh. "Vision Straps." In 2019 5th International Conference on Advanced Computing & Communication Systems (ICACCS). IEEE, 2019. http://dx.doi.org/10.1109/icaccs.2019.8728437.

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Li, Zhiwei, and Peter P. Ling. "Plant temperature stress detection with machine vision." In Photonics East '96, edited by George E. Meyer and James A. DeShazer. SPIE, 1996. http://dx.doi.org/10.1117/12.262853.

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Schwerdtfeger, Bjorn, Rupert Reif, Willibald A. Gunthner, Gudrun Klinker, Daniel Hamacher, Lutz Schega, Irina Bockelmann, Fabian Doil, and Johannes Tumler. "Pick-by-Vision: A first stress test." In 2009 8th IEEE International Symposium on Mixed and Augmented Reality (ISMAR). IEEE, 2009. http://dx.doi.org/10.1109/ismar.2009.5336484.

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Yazdani, Saami K., and Joel L. Berry. "Investigation of Strut Thickness in Coronary Stents via Finite Element Analysis." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-61873.

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Strut thickness in coronary stents has been shown to affect their clinical performance. The purpose of this investigation was to understand how stent strut thickness influenced stress in the vessel wall. Finite element modeling was used to compare stress distribution between a thick and thin strut stent in a curved coronary artery model. Specifically, we modeled two 8 mm long Guidant MULTI-LINK VISION stents, one with strut thickness of 81 μm and the other with strut thickness of 112 μm. Results showed larger values of stress, both in the radial direction and in the circumferential direction, for the thicker stent model. As expected, these higher stress values occurred beneath the stent struts and at the edges of the stent. Stented vessel compliance measurements of both models revealed that the thick strut VISION stent is less compliant than the thin strut VISION stent. These results support the hypothesis that compliance mismatch between the stent and the host vessel contributes to excessive stress in the walls of stented vessels.

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Robertson, A., V. Tadic, and JS Rahi. "026 Applying a child/young person-centred approach to develop vision-related quality of life (VQOL) and functional vision (FV) instruments for children/young people." In Great Ormond Street Hospital Conference 2018: Continuous Care. BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health, 2018. http://dx.doi.org/10.1136/goshabs.26.

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Valença, Jónatas, André Araújo, and Eduardo Júlio. "Measure the Application of Pre-Stressed CFRP Laminates Using Deep Learning for Computer Vision." In IABSE Congress, Nanjing 2022: Bridges and Structures: Connection, Integration and Harmonisation. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2022. http://dx.doi.org/10.2749/nanjing.2022.1412.

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<p>Strengthening of reinforced concrete (RC) structures with pre-stressed Carbon Fiber Reinforced Polymer (CFRP) laminates is a well-known application. The development of vision-based approaches for monitoring the strain imposed during the pre-stress application, with the required precision and accuracy, represents an important contribution for the state of the art. A new system, named Strain- Vision, was design and developed tacking into account three main modules: (i) development of a customized high precision strain monitoring CFRP laminates (hpsm-CFRP); (ii) definition of a set-up for image acquisition during pre-stress application; (iii) design of computer vision architecture based on deep learning to measure the strain. The pre-processing of data, to be analysed with an architecture previously training, is herein discussed, aiming to improve the quality and performance of the system without the need for large datasets, usually required in deep learning applications.</p>

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"Topic 2: Machine Vision and Pattern Recognition." In 2020 IEEE Third International Conference on Data Stream Mining & Processing (DSMP). IEEE, 2020. http://dx.doi.org/10.1109/dsmp47368.2020.9204104.

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"Session B: Machine vision and pattern recognition." In 2016 IEEE First International Conference on Data Stream Mining & Processing (DSMP). IEEE, 2016. http://dx.doi.org/10.1109/dsmp.2016.7583529.

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"Topic #4: Machine Vision and Pattern Recognition." In 2018 IEEE Second International Conference on Data Stream Mining & Processing (DSMP). IEEE, 2018. http://dx.doi.org/10.1109/dsmp.2018.8478588.

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Olesen, C. G., I. Tertinegg, A. Eilaghi, G. W. Brodland, C. Horst, J. H. Veldhuis, J. G. Flanagan, and C. R. Ethier. "Measuring the Biaxial Stress-Strain Characteristics of Human Sclera." In ASME 2007 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2007. http://dx.doi.org/10.1115/sbc2007-176531.

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Glaucoma is a common ocular disease that causes irreversible loss of vision. Elevated intraocular pressure (IOP) is the primary risk factor for developing glaucoma. It is believed that increased IOP causes mechanical strain on the glial cells that support the retinal ganglion cell axons and thereby causes ganglion cell apoptosis [1,2]. This damage occurs in the optic nerve head (ONH) region of the eye, and is important for understanding ONH biomechanics.

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Звіти організацій з теми "Stress visivo"

Shey Wiysonge, Charles. Does additional social support during at-risk pregnancy improve perinatal outcomes? SUPPORT, 2016. http://dx.doi.org/10.30846/1608104.

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Additional social support has been advocated for socially disadvantaged pregnant women because they are at greater risk of experiencing adverse birth outcomes. Support may include advice and counselling (e.g. about nutrition, rest, stress management, or the use of alcohol), tangible assistance (e.g. transportation to clinic appointments, or household help), and emotional support (e.g. reassurance, or sympathetic listening). The additional social support may be delivered by multidisciplinary teams of healthcare workers or lay health workers during home visits, clinic appointments or by telephone.

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Cooper, Christopher, Jacob McDonald, and Eric Starkey. Wadeable stream habitat monitoring at Congaree National Park: 2018 baseline report. National Park Service, June 2021. http://dx.doi.org/10.36967/nrr-2286621.

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The Southeast Coast Network (SECN) Wadeable Stream Habitat Monitoring Protocol collects data to give park resource managers insight into the status of and trends in stream and near-channel habitat conditions (McDonald et al. 2018a). Wadeable stream monitoring is currently implemented at the five SECN inland parks with wadeable streams. These parks include Horseshoe Bend National Military Park (HOBE), Kennesaw Mountain National Battlefield Park (KEMO), Ocmulgee Mounds National Historical Park (OCMU), Chattahoochee River National Recreation Area (CHAT), and Congaree National Park (CONG). Streams at Congaree National Park chosen for monitoring were specifically targeted for management interest (e.g., upstream development and land use change, visitor use of streams as canoe trails, and potential social walking trail erosion) or to provide a context for similar-sized stream(s) within the park or network (McDonald and Starkey 2018a). The objectives of the SECN wadeable stream habitat monitoring protocol are to: Determine status of upstream watershed characteristics (basin morphology) and trends in land cover that may affect stream habitat, Determine the status of and trends in benthic and near-channel habitat in selected wadeable stream reaches (e.g., bed sediment, geomorphic channel units, and large woody debris), Determine the status of and trends in cross-sectional morphology, longitudinal gradient, and sinuosity of selected wadeable stream reaches. Between June 11 and 14, 2018, data were collected at Congaree National Park to characterize the in-stream and near-channel habitat within stream reaches on Cedar Creek (CONG001, CONG002, and CONG003) and McKenzie Creek (CONG004). These data, along with the analysis of remotely sensed geographic information system (GIS) data, are presented in this report to describe and compare the watershed-, reach-, and transect-scale characteristics of these four stream reaches to each other and to selected similar-sized stream reaches at Ocmulgee Mounds National Historical Park, Kennesaw Mountain National Battlefield Park, and Chattahoochee National Recreation Area. Surveyed stream reaches at Congaree NP were compared to those previously surveyed in other parks in order to provide regional context and aid in interpretation of results. edar Creek’s watershed (CONG001, CONG002, and CONG003) drains nearly 200 square kilometers (77.22 square miles [mi2]) of the Congaree River Valley Terrace complex and upper Coastal Plain to the north of the park (Shelley 2007a, 2007b). Cedar Creek’s watershed has low slope and is covered mainly by forests and grasslands. Cedar Creek is designated an “Outstanding Resource Water” by the state of South Carolina (S.C. Code Regs. 61–68 [2014] and S.C. Code Regs. 61–69 [2012]) from the boundary of the park downstream to Wise Lake. Cedar Creek ‘upstream’ (CONG001) is located just downstream (south) of the park’s Bannister Bridge canoe landing, which is located off Old Bluff Road and south of the confluence with Meyers Creek. Cedar Creek ‘middle’ and Cedar Creek ‘downstream’ (CONG002 and CONG003, respectively) are located downstream of Cedar Creek ‘upstream’ where Cedar Creek flows into the relatively flat backswamp of the Congaree River flood plain. Based on the geomorphic and land cover characteristics of the watershed, monitored reaches on Cedar Creek are likely to flood often and drain slowly. Flooding is more likely at Cedar Creek ‘middle’ and Cedar Creek ‘downstream’ than at Cedar Creek ‘upstream.’ This is due to the higher (relative to CONG001) connectivity between the channels of the lower reaches and their out-of-channel areas. Based on bed sediment characteristics, the heterogeneity of geomorphic channel units (GCUs) within each reach, and the abundance of large woody debris (LWD), in-stream habitat within each of the surveyed reaches on Cedar Creek (CONG001–003) was classified as ‘fair to good.’ Although, there is extensive evidence of animal activity...

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Wong, A. K. Report on an Overseas Visit to USA Relating to the Thermoelastic Measurement of Stresses, 16-21 August 1987. Fort Belvoir, VA: Defense Technical Information Center, February 1988. http://dx.doi.org/10.21236/ada195313.

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Silva, Paula. Strengthening Urban Resilience: Five emerging lessons. Oxfam, November 2021. http://dx.doi.org/10.21201/2021.8403.

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Strengthening urban resilience is key to achieving Oxfam's vision of a world without poverty. Urbanization has become a major challenge for almost all countries around the globe. Cities and city inhabitants are facing additional and amplified challenges as a result of rapid urbanization, a changing climate and rising inequality in urban areas. The COVID-19 crisis has further highlighted the importance of strengthening inclusive urban resilience to acute shocks and chronic stresses. Oxfam's Resilience Knowledge Hub conducted the Urban Resilience Learning Exchange (URLE) project with pilot programmes in Jordan, Pakistan, Nepal, South Africa, Kenya and Bangladesh to develop a better understanding of what it takes to build resilience in urban settings. This paper summarizes the learning from the pilots and looks at how Oxfam can further strengthen its urban resilience programming.

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Travis, Amanda, Margaret Harvey, and Michelle Rickard. Adverse Childhood Experiences and Urinary Incontinence in Elementary School Aged Children. University of Tennessee Health Science Center, October 2021. http://dx.doi.org/10.21007/con.dnp.2021.0012.

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Purpose/Background: Adverse Childhood Experiences (ACEs) have an impact on health throughout the lifespan (Filletti et al., 1999; Hughes et al., 2017). These experiences range from physical and mental abuse, substance abuse in the home, parental separation or loss, financial instability, acute illness or injury, witnessing violence in the home or community, and incarceration of family members (Hughes et al., 2017). Understanding and screening for ACEs in children with urinary incontinence can help practitioners identify psychological stress as a potentially modifiable risk factor. Methods: A 5-month chart review was performed identifying English speaking patients ages 6-11 years presenting to the outpatient urology office for an initial visit with a primary diagnosis of urinary incontinence. Charts were reviewed for documentation of individual or family risk factors for ACEs exposure, community risk factors for ACEs exposures, and records where no related documentation was included. Results: For the thirty-nine patients identified, no community risk factors were noted in the charts. Seventy-nine percent of patients had one or more individual or family risk factors documented. Implications for Nursing Practice This chart review indicates that a significant percentage of pediatric, school-aged patients presenting with urinary incontinence have exposure to ACEs. A formal assessment for ACEs at the time of initial presentation would be helpful to identify those at highest risk. References: Felitti VJ, Anda RF, Nordenberg D, Williamson DF, Spitz AM, Edwards V, Koss MP, Marks JS. Relationship of childhood abuse and household dysfunction to many of the leading causes of death in adults: the adverse childhood experiences (ACE) study. Am J Prev Med. 1998;14:245–258 Hughes, K., Bellis, M.A., Hardcastle, K.A., Sethi, D., Butchart, D., Mikton, C., Jones, L., Dunne, M.P. (2017) The effect of multiple adverse childhood experiences on health: a systematic review and meta-analysis. Lancet Public Health, 2(8): e356–e366. Published online 2017 Jul 31.doi: 10.1016/S2468-2667(17)30118-4 Lai, H., Gardner, V., Vetter, J., & Andriole, G. L. (2015). Correlation between psychological stress levels and the severity of overactive bladder symptoms. BMC urology, 15, 14. doi:10.1186/s12894-015-0009-6

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Johnson, Sarah, Michael Sinclair, Emily Leonard, and Forrest Rosenbower. Development of strategies for monitoring and managing sandscape vegetation, with an assessment of declining vegetation in the Apostle Islands National Lakeshore. National Park Service, April 2022. http://dx.doi.org/10.36967/nrr-2293187.

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Coastal dune habitats such as those of the Apostle Islands National Lakeshore (APIS) are regionally rare habitats of global and state-wide concern. Their dynamic, sandy landforms provide habitat for unique species specifically adapted to frequent disturbance, drought, and other stresses. Despite having disturbance-driven life histories, these species are at risk due to increased visitor use of sandscape habitats and environmental change. Resource managers at APIS have long understood the values of these sandscapes and threats presented by recreational trampling, but more recently they have recognized the precarious position that these coastal habitats are in due to their proximity to the lake and exposure to weather-related phenomena linked with long-term climate change. In recognition of emerging threats and the need to track impacts of these threats, park managers initiated a revision of their methods for monitoring sandscape vegetation. We applied these methods to 15 sandscape locations within the national lakeshore in 2014. Here, we outline what these revisions to the methods were, assess the current status of sandscape structure and composition, assess the utility of data collected with these methods, provide suggestions for further revisions of the sampling method, outline a two-tiered sampling approach for future monitoring, and we provide management recommendations. In a second section of the report, we provide a focused assessment of the size and health of Juniperus communis (common juniper), a target species of concern in these sandscape communities after it was observed by park managers to be dying or stressed on Michigan Island. Our assessments include the status of J. communis across all sandscapes monitored in 2014, and an analysis of change over time since 2012 in the health of J. communis on Michigan, Outer, and Stockton Islands. We provide evidence of impacts by rodents on foliar dieback, primarily on Michigan Island, and we discuss possible interactions with the non-native pale juniper web-worm (Aethes rutilana) and with climate change.

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Lichter, Amnon, Gopi K. Podila, and Maria R. Davis. Identification of Genetic Determinants that Facilitate Development of B. cinerea at Low Temperature and its Postharvest Pathogenicity. United States Department of Agriculture, March 2011. http://dx.doi.org/10.32747/2011.7592641.bard.

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Botrytis cinerea is the postharvest pathogen of many agricultural produce with table grapes, strawberries and tomatoes as major targets. The high efficiency with which B. cinerea causes disease on these produce during storage is attributed in part due to its exceptional ability to develop at very low temperature. Our major goal was to understand the genetic determinants which enable it to develop at low temperature. The specific research objectives were: 1. Identify expression pattern of genes in a coldenriched cDNA library. 2. Identify B. cinerea orthologs of cold-induced genes 3. Profile protein expression and secretion at low temperature on strawberry and grape supplemented media. 4. Test novel methods for the functional analysis of coldresponsive genes. Objective 1 was modified during the research because a microarray platform became available and it allowed us to probe the whole set of candidate genes according to the sequence of 2 strains of the fungus, BO5.10 and T4. The results of this experiment allowed us to validate some of our earlier observations which referred to genes which were the product of a SSH suppression-subtraction library. Before the microarray became available during 2008 we also analyzed the expression of 15 orthologs of cold-induced genes and some of these results were also validated by the microarray experiment. One of our goals was also to perform functional analysis of cold-induced genes. This goal was hampered for 3 years because current methodology for transformation with ‘protoplasts’ failed to deliver knockouts of bacteriordopsin-like (bR) gene which was our primary target for functional analysis. Consequently, we developed 2 alternative transformation platforms, one which involves an air-gun based technique and another which involves DNA injection into sclerotia. Both techniques show great promise and have been validated using different constructs. This contribution is likely to serve the scientific community in the near future. Using these technologies we generated gene knockout constructs of 2 genes and have tested there effect on survival of the fungus at low temperature. With reference to the bR genes our results show that it has a significant effect on mycelial growth of the B. cinerea and the mutants have retarded development at extreme conditions of ionic stress, osmotic stress and low temperature. Another gene of unknown function, HP1 is still under analysis. An ortholog of the yeast cold-induced gene, CCH1 which encodes a calcium tunnel and was shown to be cold-induced in B. cinerea was recently cloned and used to complement yeast mutants and rescue them from cold-sensitivity. One of the significant findings of the microarray study involves a T2 ribonuclease which was validated to be cold-induced by qPCR analysis. This and other genes will serve for future studies. In the frame of the study we also screened a population of 631 natural B. cinerea isolates for development at low temperature and have identified several strains with much higher and lower capacity to develop at low temperature. These strains are likely to be used in the future as candidates for further functional analysis. The major conclusions from the above research point to specific targets of cold-induced genes which are likely to play a role in cold tolerance. One of the most significant observations from the microarray study is that low temperature does not induce ‘general stress response in B. cinerea, which is in agreement to its exceptional capacity to develop at low temperature. Due to the tragic murder of the Co-PI Maria R. Davis and GopiPodila on Feb. 2010 it is impossible to deliver their contribution to the research. The information of the PI is that they failed to deliver objective 4 and none of the information which relates to objective 3 has been delivered to the PI before the murder or in a visit to U. Alabama during June, 2010. Therefore, this report is based solely on the IS data.

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Shelley, John, Christopher Haring, and Nathan Chrisman. Evaluation of cedar tree revetments for bank stabilization at the Locust Creek Conservation Area, Missouri : quantifying bank erosion volumes from preproject to postfailure. Engineer Research and Development Center (U.S.), December 2022. http://dx.doi.org/10.21079/11681/46144.

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The US Army Corps of Engineers Regional Sediment Management (RSM) program funded research to assess the longevity and effectiveness of cedar tree revetments for sediment reduction. Between 1988 and 1997, the Missouri Department of Conservation (MDC) constructed multiple cedar tree revetments, plantings, and a grade-control structure at an experimental stream management area on Locust Creek within the Locust Creek Conservation Area (LCCA). For the first few years, MDC also replaced missing trees as needed. MDC monitored these sites with photographs and cross sections until 2004. This study evaluated bank stability on Locust Creek from 1970 to 2019 using aerial imagery, lidar, ground surveys, and a December 2019 site visit to estimate the areal change in streambanks and the volume of sediment eroded over the years. Based on their dates of construction, the project compared preproject, with-project, and postfailure conditions at each site. The project included cedar tree revetments, other hardwood revetments, plantings, and a grade-control structure. This research found a 50% to 64% reduction in erosion for approximately 14 years. As of December 2019, all tree revetments had failed, and banks were bare and steep. The grade-control structure remained intact and continued to stabilize bed and banks immediately upstream.

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Hudgens, Bian, Jene Michaud, Megan Ross, Pamela Scheffler, Anne Brasher, Megan Donahue, Alan Friedlander та ін. Natural resource condition assessment: Puʻuhonua o Hōnaunau National Historical Park. National Park Service, вересень 2022. http://dx.doi.org/10.36967/2293943.

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Natural Resource Condition Assessments (NRCAs) evaluate current conditions of natural resources and resource indicators in national park units (parks). NRCAs are meant to complement—not replace—traditional issue- and threat-based resource assessments. NRCAs employ a multi-disciplinary, hierarchical framework within which reference conditions for natural resource indicators are developed for comparison against current conditions. NRCAs do not set management targets for study indicators, and reference conditions are not necessarily ideal or target conditions. The goal of a NRCA is to deliver science-based information that will assist park managers in their efforts to describe and quantify a park’s desired resource conditions and management targets, and inform management practices related to natural resource stewardship. The resources and indicators emphasized in a given NRCA depend on the park’s resource setting, status of resource stewardship planning and science in identifying high-priority indicators, and availability of data and expertise to assess current conditions for a variety of potential study resources and indicators. Puʻuhonua o Hōnaunau National Historical Park (hereafter Puʻuhonua o Hōnaunau NHP) encompasses 1.7 km2 (0.7 mi2) at the base of the Mauna Loa Volcano on the Kona coast of the island of Hawaiʻi. The Kona coast of Hawaiʻi Island is characterized by calm winds that increase in the late morning to evening hours, especially in the summer when there is also a high frequency of late afternoon or early evening showers. The climate is mild, with mean high temperature of 26.2° C (79.2° F) and a mean low temperature of 16.6° C (61.9° F) and receiving on average 66 cm (26 in) of rainfall per year. The Kona coast is the only region in Hawaiʻi where more precipitation falls in the summer than in the winter. There is limited surface water runoff or stream development at Puʻuhonua o Hōnaunau NHP due to the relatively recent lava flows (less than 1,500 years old) overlaying much of the park. Kiʻilae Stream is the only watercourse within the park. Kiʻilae Stream is ephemeral, with occasional flows and a poorly characterized channel within the park. A stream gauge was located uphill from the park, but no measurements have been taken since 1982. Floods in Kiʻilae Stream do occur, resulting in transport of fluvial sediment to the ocean, but there are no data documenting this phenomenon. There are a small number of naturally occurring anchialine pools occupying cracks and small depressions in the lava flows, including the Royal Fishponds; an anchialine pool modified for the purpose of holding fish. Although the park’s legal boundaries end at the high tide mark, the sense of place, story, and visitor experience would be completely different without the marine waters adjacent to the park. Six resource elements were chosen for evaluation: air and night sky, water-related processes, terrestrial vegetation, vertebrates, anchialine pools, and marine resources. Resource conditions were determined through reviewing existing literature, meta-analysis, and where appropriate, analysis of unpublished short- and long-term datasets. However, in a number of cases, data were unavailable or insufficient to either establish a quantitative reference condition or conduct a formal statistical comparison of the status of a resource within the park to a quantitative reference condition. In those cases, data gaps are noted, and comparisons were made based on qualitative descriptions. Overall, the condition of natural resources within Puʻuhonua o Hōnaunau NHP reflects the surrounding landscape. The coastal lands immediately surrounding Puʻuhonua o Hōnaunau NHP are zoned for conservation, while adjacent lands away from the coast are agricultural. The condition of most natural resources at Puʻuhonua o Hōnaunau NHP reflect the overall condition of ecological communities on the west Hawai‘i coast. Although little of the park’s vegetation...

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