Academic literature on the topic 'Tool PIGEON'
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Journal articles on the topic "Tool PIGEON"
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Alesci, R., V. Porciatti, L. Sebastiani, and P. Bagnoli. "p-Chloroamphetamine treatment modifies evoked responses to sinusoidal gratings in the pigeon optic tectum." Visual Neuroscience 2, no. 2 (February 1989): 147–52. http://dx.doi.org/10.1017/s0952523800012001.
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AbstractThis study was performed in order to establish whether selective depletion of serotonin (5-HT) and its metabolite 5-hydroxyindoleacetic acid (5-HIAA) in the pigeon optic tectum (TeO) induced by p-chloroamphetamine (p-CA) modified tectal evoked potentials (TEPs). TEPs in response to sinusoidal gratings of different contrast, spatial and temporal frequency were recorded in control pigeons and in pigeons intraperitoneally injected with p-CA (10 mg/kg; two administrations in consecutive days). TEPs of p-CA treated pigeons, as compared to those of control pigeons, were reduced in amplitude as a function of contrast, spatial and temporal frequency. In addition, TEPs of p-CA treated pigeons differed from those recorded in controls in their transfer characteristics of contrast and spatial frequency. In particular, TEPs of p-CA treated pigeons did not saturate at moderate contrast, unlike those of controls. Furthermore, the TEP spatial tuning in p-CA treated pigeons is broader than that in controls; it thus suggests a reduction of spatial-frequency selectivity. These findings indicate that a selective neurotoxin for serotonergic systems, such as p-CA, can serve as a useful denervation tool for the study of the serotonergic function in the pigeon TeO. In addition, selective changes of TEP properties suggest the possibility that serotonergic afferents play a modulatory role on the receptive-field characteristics of tectal neurons.
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Marder, J., and I. Gavrieli-Levin. "The heat-acclimated pigeon: an ideal physiological model for a desert bird." Journal of Applied Physiology 62, no. 3 (March 1, 1987): 952–58. http://dx.doi.org/10.1152/jappl.1987.62.3.952.
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Acclimation of rock pigeon (Columba livia) to high ambient temperature (Ta) 50 degrees C from the time of hatching resulted in a well-developed cutaneous evaporative cooling mechanism (CECM), which became the dominant mechanism for heat dissipation. After the age of 15 days and in adults, acclimated pigeons exposed to 48–60 degrees C Ta could regulate normal body temperature (Tb) without employing either panting or gular fluttering. Respiration rate varied between 36 +/- 12 (SD) and 35 +/- 14 breaths/min at moderate and at extreme high Ta's, respectively. During thermal stress (42, 45, and 47 degrees C) imposed in a metabolic chamber, nonpanting pigeons' heat balance was achieved by adjusting low-level heat production (46.2 +/- 6.8 W/m2) and by use of an efficient CECM that dissipated 145% of the metabolic heat. Tb was regulated between 40.7 +/- 0.5 and 41.8 +/- 0.4 degrees C over a wide range of Ta's (20–56 degrees C). The respiratory evaporative cooling mechanism (RECM) was effective since hatching. The CECM developed approximately 24 h later during the ontogeny of the altricial nestling pigeon. This trait, which exists in many bird species and may be a recent development, possibly evolved as an adaptation to hot environments. In the present study we have brought evidence for a multitrait physiological adaptation that takes preeminence in adjusting the processes involved in maintaining heat balance. This integrative complex creates a powerful, efficient tool for contending with the most extreme thermal conditions.
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Emefiene, M. E., V. I. Joshua, C. Nwadike, A. Y. Yaroson, and N. D. E. Zwalnan. "Profitability Analysis of Pigean Pea (Cajanus cajan) Production in Riyom LGA of Plateau State." International Letters of Natural Sciences 18 (July 2014): 73–88. http://dx.doi.org/10.18052/www.scipress.com/ilns.18.73.
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The study focused on the profitability of pigeon pea production in Riyom LGA of Plateau State. Data for the study were obtained from both primary and secondary sources. Questionnaires were administered to 80 targeted farmers to get information on their socio-economic characteristics, years of experience in pigeon pea production and the reason for growing pigeon pea. The analytical tool used includes descriptive statistics to analyze the socio-economic characteristics of the farmers and farm budgeting technique (gross margin analysis) for assessing the profitability of pigeon pea production. The study also identified the constraints encountered by farmers such as high cost of labour, inadequate processing / storage facilities, problems of access to credit/loans and weed/pest infestation. The results shows that pigeon pea production is profitable with a total variable cost (TVC) at N22620.68 per ha, while gross revenue (GR) was N50185.25 per ha, the profit margin (GM) at N32564.59 and the net return per Naira invested was N0.69. It was recommended that farm inputs and improved seed varieties should be made available to farmers at affordable rates so as to enable them operate at a commercial and profitable level of pigeon pea production. These farmers should be encouraged to form a cooperative society so as to alleviate the problem of credit/ loan acquisition and procurement of genuine products as well as avoid exploitation
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Evans, Richard. "Evidence-based orthopaedics or ‘superstition in the pigeon’." Veterinary and Comparative Orthopaedics and Traumatology 22, no. 05 (2009): 346–50. http://dx.doi.org/10.3415/vcot-08-12-0122.
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SummaryPigeon behavioural conditioning methods are similar to the processes that orthopaedic surgeons use to evaluate new surgical procedures. Alternatively, evidence-based orthopaedics is a tool for surgeons to evaluate procedures in a systematic, patient-centred way that is less instinctive than pigeon behaviour. The objective of this article is to describe evidence-based orthopaedics, and then propose changes to surgical culture with the aim of refining the interpretation of the current literature and improving the quality of future research. The proposals are ‘institutional’ changes rather than calls for increased funding and more randomised controlled trials.
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Zhang, Yanhui, Shili Lin, Haiping Ma, Yuanjun Guo, and Wei Feng. "A Novel Pigeon-Inspired Optimized RBF Model for Parallel Battery Branch Forecasting." Complexity 2021 (February 22, 2021): 1–7. http://dx.doi.org/10.1155/2021/8895496.
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Battery energy storage is the pivotal project of renewable energy systems reform and an effective regulator of energy flow. Parallel battery packs can effectively increase the capacity of battery modules. However, the power loss caused by the uncertainty of parallel battery branch current poses severe challenge to the economy and safety of electric vehicles. Accuracy of battery branch current prediction is needed to improve the parallel connection. This paper proposes a radial basis function neural network model based on the pigeon-inspired optimization method and successfully applies the algorithm to predict the parallel branch current of the battery pack. Numerical results demonstrate the high accuracy of the proposed pigeon-inspired optimized RBF model for parallel battery branch forecasting and provide a useful tool for the prediction of parallel branch currents of battery packs.
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Chen, Yan, Xinyu Liu, Shan Li, and Hong Wan. "Decoding Pigeon Behavior Outcomes Using Functional Connections among Local Field Potentials." Computational Intelligence and Neuroscience 2018 (2018): 1–13. http://dx.doi.org/10.1155/2018/3505371.
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Recent studies indicate that the local field potential (LFP) carries information about an animal’s behavior, but issues regarding whether there are any relationships between the LFP functional networks and behavior tasks as well as whether it is possible to employ LFP network features to decode the behavioral outcome in a single trial remain unresolved. In this study, we developed a network-based method to decode the behavioral outcomes in pigeons by using the functional connectivity strength values among LFPs recorded from the nidopallium caudolaterale (NCL). In our method, the functional connectivity strengths were first computed based on the synchronization likelihood. Second, the strength values were unwrapped into row vectors and their dimensions were then reduced by principal component analysis. Finally, the behavioral outcomes in single trials were decoded using leave-one-out combined with the k-nearest neighbor method. The results showed that the LFP functional network based on the gamma-band was related to the goal-directed behavior of pigeons. Moreover, the accuracy of the network features (74 ± 8%) was significantly higher than that of the power features (61 ± 12%). The proposed method provides a powerful tool for decoding animal behavior outcomes using a neural functional network.
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Gonçalves, Saulo Romero Felix, Órion Pedro Da Silva, Mariana Lumack do Monte Barretto, Rômulo Freitas Francelino Dias, Raylson Pereira De Oliveira, Gabriela Gonçalves Da Silva, Pedro Paulo Feitosa De Albuquerque, Márcia De Figueiredo Pereira, and Andrea Alice Da Fonseca Oliveira. "Systemic Cryptococcosis in a Miniature Schnauzer Dog." Acta Scientiae Veterinariae 46 (June 17, 2018): 5. http://dx.doi.org/10.22456/1679-9216.86857.
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Background: Cryptococcosis is an important zoonotic disease that occurs worldwide. The disease is caused by a soilborne opportunistic fungus of the genus Cryptococcus, which can also be found in the feces of birds, especially pigeons. In Brazil, the geographical distribution of the agent is fairly defined, with the species C. gattii predominantly found in thenorth-eastern states. Diagnosis is based on the clinical history, physical examination findings, and results of complementary testing, such as cytopathological and histopathological examinations. This report aims to describe the clinical and anatomopathological findings in a case of systemic cryptococcosis in a dog.Case: A 4-year-old female Miniature Schnauzer was referred for necropsy. For 3 months prior to death, the dog had displayed generalized alopecia, pruritus, and severe weight loss, Initially, a private veterinarian had suspected leishmaniasis. Gross examination was performed and samples for cytopathology, histopathology, and fungal culture were obtained. Themacroscopic examination revealed generalized alopecia, congested mucosa, cachexia, hyperemia of the brain, and multiple white nodules measuring 0.5 cm to 4 cm in the lungs and the kidneys. None of the other organs showed significant lesions. Cytopathological examination of the nodules revealed a highly cellular sample, with a severe chronic inflammatory response, characterized by multinucleated giant cells and round-to-elliptical, yeast-shaped structures (5-10 μm), suggestive ofCryptococcus organisms. Histopathological examination of the lungs, kidneys, and brain revealed a severe diffuse chronic inflammatory process, with lymphocytic infiltration and multinucleated giant cells; countless yeast-shaped, round-to-ovoid structures (similar in appearance to “soap bubbles”) that were negative in hematoxylin-eosin stain were also present.Grocott’s methenamine silver stain was then applied, which positively stained the organism capsules black, confirming Cryptococcus. For mycological diagnosis, samples from the lungs nodules were cultured on Sabouraud’s dextrose agar supplemented with chloramphenicol 0.4% and incubated for 7 days at 25-30ºC. Abundant small, smooth, irregular-sized,cream-colored colonies were obtained, and a mycological smear, stained by India ink, was performed.Discussion: Considered an uncommon disease, canine cryptococcosis can be misdiagnosed. Clinical findings, such as alopecia, lymphadenopathy, and cutaneous nodules that may be ulcerated, are commonly seen in these patients due to the hematogenous spread of the organism. In the case described, the dog’s owner was contacted and asked to provide epidemiological information. The owner reported that the dog had lived in an apartment, with little access to the street; however, pigeons were frequently observed on the balcony, along with pigeon feces in the dog feeder. The presence of pigeon feces is a risk factor for the development and spread of the fungus, which may be problematic to public health. Cytopathological examination is a simple, quick diagnostic tool with good sensitivity for some infectious agents. Mycological culture can provide results due to the characteristic of the Cryptococcus sp., since the encapsulated yeast produces a mucous-like colony. Cryptococcosis has a relevant role in public health, so a precise diagnosis is imperative. Its diagnosis is based upon culture, cytology and serological tools. When the animal does not survive to the ilness, the association between necropsyfindings and histopathological examinations is essencial.Keywords: canine, diagnostic, yeast, anatomopathology.
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Benítez Benítez, Ricardo, Wilmar Fernando Elvira Tabares, Luis Alberto Lenis Velásquez, Clara Inés Hurtado Sánchez, and Omar Alberto Salinas Cruel. "Enzymatic hydrolysis as a tool to improve total digestibility and techno-functional properties of pigeon pea (Cajanus cajan) starch." Heliyon 7, no. 8 (August 2021): e07817. http://dx.doi.org/10.1016/j.heliyon.2021.e07817.
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Proskura, WS, A. Lukaszewicz, E. Dzierzba, D. Cichon, D. Zaborski, W. Grzesiak, and A. Dybus. "The Cys83Gly amino acid substitution in feather keratin is associated with pigeon performance in long-distance races." Veterinární Medicína 62, No. 4 (April 10, 2017): 221–25. http://dx.doi.org/10.17221/271/2015-vetmed.
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The aim of this study was to investigate the association of the g.710T>G polymorphism in the keratin gene, which results in a cysteine to glycine amino acid change at position 83 (Cys83Gly) in feather keratin, with homing pigeon racing performance. A total of 123 homing pigeons were investigated. The data set used in this study consisted of scores from 17 short races (less than 400 km) and 11 long races (greater than 500 km) that took place in the 2011 and 2012 racing seasons (2589 race records in total). The genotyping of the g.710T>G polymorphism was performed using the artificially created restriction site-PCR assay. The T allele and the TT genotype were prevalent with frequencies of 0.658 and 0.447, respectively. The TT pigeons had the highest mean of ace points in the long races and in all races overall, while the GT birds scored the best in the short races. Nevertheless, the effect of the polymorphism was significant only in the long races (P = 0.0451), in which the pigeons carrying the TT genotype showed better racing performance in comparison with those carrying the GG genotype (P ≤ 0.05). In order to explain this phenomenon, several bioinformatics tools were employed to check for the possible consequences of the Cys83Gly substitution for feather keratin. The cysteine at position 83 was indicated to form a disulphide bond, while the Cys83Gly substitution was predicted to disturb the stability of the protein. However, the predictions preformed using the different tools were not entirely consistent. Nevertheless, the loss of the cysteine at position 83 of pigeon feather keratin may affect the structure of feathers, thus changing their biomechanical characteristics, and consequently, may influence the flying ability of pigeons.
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Puig-Sirera, Àngela, Daniele Antichi, Dylan Warren Raffa, and Giovanni Rallo. "Application of Remote Sensing Techniques to Discriminate the Effect of Different Soil Management Treatments over Rainfed Vineyards in Chianti Terroir." Remote Sensing 13, no. 4 (February 16, 2021): 716. http://dx.doi.org/10.3390/rs13040716.
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The work aimed to discriminate among different soil management treatments in terms of beneficial effects by high-resolution thermal and spectral vegetation imagery using an unmanned aerial vehicle and open-source GIS software. Five soil management treatments were applied in two organic vineyards (cv. Sangiovese) from Chianti Classico terroir (Tuscany, Italy) during two experimental years. The treatments tested consisted of conventional tillage, spontaneous vegetation, pigeon bean (Vicia faba var. minor Beck) incorporated in spring, mixture of barley (Hordeum vulgare L.) and clover (Trifolium squarrosum L.) incorporated or left as dead mulch in late spring. The images acquired remotely were analyzed through map-algebra and map-statistics in QGIS and correlated with field ecophysiological measurements. The surface temperature, crop water stress index (CWSI) and normalized difference vegetation index (NDVI) of each vine row under treatments were compared based on frequency distribution functions and statistics descriptors of position. The spectral vegetation and thermal-based indices were significantly correlated with the respective leaf area index (R2 = 0.89) and stem water potential measurements (R2 = 0.59), and thus are an expression of the crop vigor and water status. The gravel and active limestone soil components determined the spatial variability of vine biophysical (e.g., canopy vigor) and physiological characteristics (e.g., vine chlorophyll content) in both farms. The vine canopy surface temperature, and CWSI were lower on the spontaneous and pigeon bean treatments in both farms, thus evidencing less physiological stress on the vine rows derived from the cover crop residual effect. In conclusion, the proposed methodology showed the capacity to discriminate across soil management practices and map the spatial variability within vineyards. The methodology could serve as a simple and non-invasive tool for precision soil management in rainfed vineyards to guide producers on using the most efficient and profitable practice.
Dissertations / Theses on the topic "Tool PIGEON"
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Gal, Pavel. "Identifikace podobných řešení při stochastické simulaci v oblasti odpadového hospodářství." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-231793.
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The Master’s thesis deals with the issue of collecting mixed municipal waste from producers to a~waste-to-energy or landfills. The initial chapters are aimed to waste legislation and transportation of the waste by road freight transport across Europe. The objective is to collect the data, that are required for calculation in tool NERUDA. The next part describes the cluster analysis and different approaches in it. The selected methods of cluster analysis are apllied to the logistic task in the final chapters. The cluster analysis is considered from different aspects. The results are visualized using the software ArcGIS.
Books on the topic "Tool PIGEON"
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Humphries, Courtney. Superdove: How the Pigeon took Manhattan ... and the World. New York: Smithsonian Books, 2008.
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Angotti, Franco, Giuseppe Pelosi, and Simonetta Soldani, eds. Alle radici della moderna ingegneria. Florence: Firenze University Press, 2010. http://dx.doi.org/10.36253/978-88-6453-142-7.
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The subject around which the contributions in this volume gravitate is the creation of a higher institute of engineering studies in Florence in the late nineteenth-century. On the eve of the unification of Italy, Florence was a promising centre for a Polytechnic, in view of the experience of the Corpo di Ingegneri di Acque e Strade, the precocious railway building, the importance of the mining sector and the solidity of the Istituto Tecnico Toscano. Despite this, unlike what took place in Milan and in Turin, the Istituto Tecnico Toscano was not transformed into a Polytechnic for the training of engineers. The reasons for this non-development can be traced to the lack of "industrialist" propensities in the managerial group that emerged victorious from the "peaceful revolution" of 1859, to a desire for independence from the national academic system built on the Casati law, and to a local demand for engineering skills that was less dynamic than expected. Consequently, the prevailing winds were those of "normalisation" blowing from the government, the universities and the most prestigious Colleges of Engineers. Nevertheless, Florence continued to represent an important technological centre, especially in relation to railway infrastructures, public works, and the mechanical engineering industries (for example Pignone and Galileo). In the end it was not until one hundred years after unification that the city finally became the seat of a Faculty of Engineering.
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Atherstone, Andrew. Identities and Parties. Edited by Mark Chapman, Sathianathan Clarke, and Martyn Percy. Oxford University Press, 2016. http://dx.doi.org/10.1093/oxfordhb/9780199218561.013.6.
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Anglicanism’s multiple identities are often explained in terms of ‘church parties’, perhaps ‘high church’ and ‘low church’; ‘conservative’ and ‘radical’; or ‘evangelical’, ‘anglo-catholic’ and ‘liberal’. Such descriptions are frequently heard in accounts of the origins and contemporary character of the Anglican movement. However, there are many pitfalls in this interpretative approach, as this chapter reveals. The flourishing literature on Anglican identities is often deeply misleading. In particular, a church party framework can be guilty of imposing a model of conflict upon the historical record; of pigeon-holing Anglicans with simplistic stereotypes; and of being used as a rhetorical tool to bolster intra-Anglican polemics. This chapter cautions against the dangers, to which all students of Anglicanism must be alert.
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Nero, Paul, and James Moore. Pigeon-Guided Missiles: And 49 Other Ideas That Never Took Off. History Press Limited, The, 2011.
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Pigeon Guided Missiles And 49 Other Ideas That Never Took Off. History Press, 2011.
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Husak, Douglas. Courses of Conduct. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190683450.003.0009.
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This chapter begins with an argument nearly everyone will reject as unsound. The chapter rejects it too. What is far less obvious, however, is exactly what is wrong with the argument. Despite skeptical challenges from both sides, the chapter tentatively concludes that the best solution to this problem consists in construing some instances of behavior as a course of conduct rather than as a discrete set of acts and omissions. When behavior consists in a course of conduct, it is a complex that consists in both acts and omissions. Attempts to pigeon-hole such behavior as either an act or an omission without regard to the complex in which both play a part are bound to produce philosophical distortion and normative confusion.
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Gardner, Daniel. Environmental Pollution in China. Oxford University Press, 2018. http://dx.doi.org/10.1093/wentk/9780190696115.001.0001.
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When Deng Xiaoping introduced market reforms in the late 1970s, few would have imagined what the next four decades would bring. China’s GDP has grown on average nearly 10 percent annually since, and its economy is now the second largest in the world. Forty years ago, the Flying Pigeon bicycle ruled the roads; today, China is the world’s largest car market. And if forty years ago you looked out across the Huangpu River from the Bund in Shanghai, you would have seen farmland and a few warehouses and wharves; now you see the stunning, futuristic cityscape of Pudong. The material progress of the past forty years has been staggering-a source of pride for the Chinese people, as well as a source of legitimacy for the ruling Chinese Communist Party. But that progress has come at great cost: the extreme pollution of China’s air, water, and soil has taken a stark toll on human health. In Environmental Pollution in China: What Everyone Needs to Know®, Daniel K. Gardner examines the range of factors-economic, social, political, and historical-contributing to the degradation of China’s environment. He also covers the public response to the widespread pollution; the measures the government is taking to clean up the environment; and the country’s efforts to lessen its dependence on fossil fuels and develop clean sources of energy. Concise, accessible, and authoritative, this book serves as an ideal primer on one of the world’s most challenging environmental crises.
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Backhouse, Roger E., Bradley W. Bateman, and Tamotsu Nishizawa. Liberalism and the Welfare State in Britain, 1890–1945. Oxford University Press, 2017. http://dx.doi.org/10.1093/acprof:oso/9780190676681.003.0002.
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This chapter establishes that the British welfare state was the creation of Liberals as much as socialists. By the early twentieth century, the “New Liberalism” was moving the Liberal Party away from Gladstonian Liberalism, and the Asquith government took major steps toward a welfare state before World War I. The economists arguing for the welfare state included many Liberals, notably Alfred Marshall, J. A. Hobson, A. C. Pigou, William Beveridge, and John Maynard Keynes. British Liberalism was varied, and influential strands within it were strongly supportive of the welfare state. Beveridge and Keynes, in particular, were responsible for much of the intellectual architecture of the welfare state as it was implemented by the first postwar Labour government of Clement Attlee.
Book chapters on the topic "Tool PIGEON"
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Venkatachalam, P., and G. Lakshmi Sita. "Genetic Transformation as a Tool for Improvement of Pigeon Pea, Cenetic Cajan (L.) Millsp." In Handbook of New Technologies for Genetic Improvement of Legumes, 125–45. CRC Press, 2008. http://dx.doi.org/10.1201/9781439801352.ch8.
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Braddon, Mary Elizabeth. "Chapter I The Writing in the Book." In Lady Audley’s Secret. Oxford University Press, 2012. http://dx.doi.org/10.1093/owc/9780199577033.003.0023.
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Mr Audley rose from the dinner-table and walked over to the cabinet in which he kept the document he had drawn up relating to George Talboys. He unlocked the doors of his cabinet, took the paper from the pigeon-hole marked Important, and...
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Danks, Janine A., and Samantha J. Richardson. "Endocrinology and evolution: lessons from comparative endocrinology." In Oxford Textbook of Endocrinology and Diabetes, 14–23. Oxford University Press, 2011. http://dx.doi.org/10.1093/med/9780199235292.003.1013.
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Comparative endocrinology is the study of the endocrine glands and their hormones in different species of animals. It is undergoing a renaissance because of the new tools and techniques provided by genome sequencing and molecular biology. Until relatively recently, characterization and detection of hormones in lower vertebrates relied on biological assays and protein chemistry approaches, whereas now gene sequences can be readily revealed from whole genome sequencing. Gene expression and synthesis can be used to develop antibodies and other reagents for sensitive assays and revealing physiological experiments can be carried out. Endocrinology traditionally used a range of animal species, including many lower vertebrates. Comparative endocrinology became a separate specialty only in the last 50 years when endocrinologists concentrated on rodents as their model animals. In 1933, Riddle demonstrated that an avian pituitary factor that promoted growth of the pigeon crop-sac was identical to a mammalian pituitary factor that earlier had been found to initiate and maintain milk secretion in mammals. Riddle called this avian factor prolactin and the response of the crop-sac provided a sensitive assay for the detection of human prolactin in pituitary extracts. Pigeon prolactin was the first pituitary hormone to be crystallized and purified in 1937 and led to the purification of mammalian prolactin. Prolactin has a number of roles in lower vertebrates, including a vital role as a hypercalcaemic factor in fish. The first part of this chapter focuses on the calcium-regulating factors including parathyroid hormone (PTH), parathyroid hormone-related protein (PTHrP), and stanniocalcin (STC), and the second part will discuss comparative endocrinology of thyroid hormones and transthyretin (a thyroid hormone distributor in blood the cerebrospinal fluid).
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Monsia, Symphorien, and Sami Faiz. "High-Level Languages for Geospatial Analysis of Big Data." In Interdisciplinary Approaches to Spatial Optimization Issues, 62–81. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-1954-7.ch004.
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In recent years, big data has become a major concern for many organizations. An essential component of big data is the spatio-temporal data dimension known as geospatial big data, which designates the application of big data issues to geographic data. One of the major aspects of the (geospatial) big data systems is the data query language (i.e., high-level language) that allows non-technical users to easily interact with these systems. In this chapter, the researchers explore high-level languages focusing in particular on the spatial extensions of Hadoop for geospatial big data queries. Their main objective is to examine three open source and popular implementations of SQL on Hadoop intended for the interrogation of geospatial big data: (1) Pigeon of SpatialHadoop, (2) QLSP of Hadoop-GIS, and (3) ESRI Hive of GIS Tools for Hadoop. Along the same line, the authors present their current research work toward the analysis of geospatial big data.
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Hayashi, Brian Masaru. "Countering Enemy Spies, Rescuing POWs, and Dealing with Collaborators." In Asian American Spies, 155–85. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780195338850.003.0008.
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Asian Americans joined X-2 (the counterintelligence branch) and were involved in spy hunts. They were not always successful, as the Japanese Mata Hari’s spy ring eluded capture. Yet Asian American like John Kwock were nevertheless effective in securing OSS facilities from penetration by Japanese and Chinese Nationalist agents under Tai Li. Their greatest contribution, however, came with the Allied POWs rescue operations for missions code-named Cardinal and Pigeon. They also took up war crimes investigations immediately after the cessation of hostilities. They looked into alleged collaborationist activities of their ethnic cohorts such as Nazi Germany and Imperial Japan’s radio propaganda broadcaster Herbert Moy, and others whose alleged activities were deemed treasonous by European American investigators such as Frank Farrell. With their expert knowledge of the local context in East Asia as well as the alleged traitors’ Asian American background, this provided them with a unique ability to assess these cases.
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Laing, Sarah. "Short Story." In Katherine Mansfield and Elizabeth von Arnim, 147–58. Edinburgh University Press, 2019. http://dx.doi.org/10.3366/edinburgh/9781474454438.003.0011.
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Laura had been worried all day about crashing the car – the last time she’d driven Monica, she’d overtaken a cyclist on a blind rise and Monica had flinched, anticipating the crunch of a head-on collision that would ricochet the oncoming car against the Frida Kahlo mural on the concrete retaining wall. The mural was primitive, done by a midnight gang with no council mandate. Ian Curtis’s death date was up there too, and either someone continued to touch up the paint, or it had everlasting properties. Why were people in Wellington so fixated on Ian Curtis’s death? Other people had suicided subsequently. Kurt Cobain, Robin Williams, Antony Bourdain. There were no retaining walls near where she lived and the hill crumbled, cascaded, little slumps of ochre rock strewing the road. There was also a sign, warning drivers about low-flying kereru, but the last time she’d biked up the hill, she saw a wood pigeon on the road, its wings iridescent green and blue, scarlet blood starbursting its head. It was the first time she’d seen one with its eyes shut....
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Thompson, Roger K. R., and Cynthia L. Contie. "Further reflections on mirror-usage by pigeons: Lessons from Winnie-the-Pooh and Pinocchio too." In Self-Awareness in Animals and Humans, 392–410. Cambridge University Press, 1994. http://dx.doi.org/10.1017/cbo9780511565526.028.
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Kumekawa, Ian. "Retreat to the Ivory Tower." In The First Serious Optimist. Princeton University Press, 2017. http://dx.doi.org/10.23943/princeton/9780691163482.003.0006.
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This chapter discusses Pigou's withdrawal to the academy at Cambridge, which did not merely indicate a changing perception of the possibilities of government action. This withdrawal also signaled that the dream to engage in efforts that directly affected welfare was fading. These developments occurred, however, during the period of Pigou's career that would prove the most productive, a period when he consolidated his reputation as the most eminent economic voice of his generation. As he stepped back from participating in issues of policy, he was ascendant as a scientist “of the chair.” It is not unlikely that Pigou himself took some satisfaction in this transformation.
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Lewis, William M. "Where We Are, and How We Got Here." In Wetlands Explained. Oxford University Press, 2001. http://dx.doi.org/10.1093/oso/9780195131833.003.0003.
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English is a subtle language with many words that offer fine shades of meaning, but it also can be blunt and unequivocal. Dictionaries were not made for words such as hairdo, ballpark, or pigpen. The law, however, as practiced by Americans, can mutate the meaning of even the humblest word. If the law concerns itself with pigpens, then we must know whether a pigpen still exists when the pigs are removed and, if so, for how long. We must know if a pen originally built for cattle can become a pigpen if occupied by pigs and if pigpens are the same in all parts of the nation. In short, we must have federal guidance, regional interpretations, legal specialists, and technical authorities on pigpens. So it is with wetlands. The chapters of this book will show how troublesome the definition of wetlands has become since the federal government began regulating them. In the meantime, it will suffice to define wetlands informally as those portions of a landscape that are not permanently inundated under deep water, but are still too wet most years to be used for the cultivation of upland crops such as corn or soybeans. Wetlands, in other words, coincide pretty well with the common conception of swamps, marshes, and bogs. Government has had its hand in wetlands for about 150 years. Between the 1850s and 1970s, the federal government was intent on eliminating wetlands. Since then, it has been equally intent on preserving them. An individual who behaved in this manner would seem at least irresponsible. Many critics of federal wetland policy have in fact given the government a sound thrashing for its inconsistency, but the shift from elimination to protection of wetlands has continued nevertheless. Blaming government is the duty of a free people, and also good sport. Even so, the obvious truth about wetland regulation is that government has merely reflected a change in public attitude toward wetlands. Most Americans now believe that wetlands should be saved throughout the nation, except possibly on their own property. Americans did not always feel this way. Most European colonists of North America came from homelands that were essentially tame.
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Kagel, John H. "Economics according to the rats (and pigeons too): what have we learned and what can we hope to learn?" In Laboratory Experimentation in Economics, 155–92. Cambridge University Press, 1987. http://dx.doi.org/10.1017/cbo9780511528316.006.
Full textConference papers on the topic "Tool PIGEON"
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Nen, Voon Yang, and Ong Chin Ann. "Pigeon-table: A quick prototyping tool using twitter bootstraps and AngularJS for data-driven web application development." In 2017 International Conference on Computer and Drone Applications (IConDA). IEEE, 2017. http://dx.doi.org/10.1109/iconda.2017.8270395.
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Rahimi, Afshin, Trevor Cohn, and Timothy Baldwin. "pigeo: A Python Geotagging Tool." In Proceedings of ACL-2016 System Demonstrations. Stroudsburg, PA, USA: Association for Computational Linguistics, 2016. http://dx.doi.org/10.18653/v1/p16-4022.
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Carcasci, Carlo, Bruno Facchini, Francesco Grillo, Erio Benvenuti, and Gianni Mochi. "Development of Diagnostic Tools for Real Time Assessment of Gas Turbine Hot Gas Path Component Temperatures: A Preliminary Study." In ASME Turbo Expo 2002: Power for Land, Sea, and Air. ASMEDC, 2002. http://dx.doi.org/10.1115/gt2002-30249.
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This paper outlines a part of the work under way at GE Oil and Gas – Nuovo Pignone to develop advanced diagnostic tools to evaluate gas turbine hot gas path components life on the basis of actual operating data continuously recorded by remote monitoring systems. The system aims at correlating component metal temperatures and stresses as a function of operating performance data measured through standard machine instrumentation. Monitored data is processed by a new inverse-cycle algorithm to evaluate gas-path temperatures and pressures. The generated gas path information needs then to be correlated to metal temperatures and stresses with precision suitable for input to algorithms evaluating creep, oxidation and hot corrosion damage. Typically, calculations of gas path data to metal temperatures and stresses are performed at the design stage for a limited number of critical operating conditions by using complex and sophisticated CFD and structural/thermal analysis computer codes. For applications to diagnostic, direct use of such tools for any monitored sets of data would be impracticable. On the other hand, they represent the most effective means for assessing hot gas path component temperatures with adequate accuracy, particularly on last generation engines with substantial turbine blade and nozzle cooling. The approach chosen and described herein consists in extensively using high level design tools over a wide range of turbine operating conditions and use the results to produce equations and maps linking field monitored data to component temperatures suitable for easy implementation into a life evaluation system. In the paper major aspects of the above work are reviewed and synthesized, and significant steps in the first application to a turbine first stage cooled blade are illustrated.
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Nakamura, Jun, Xu Tian, Scott Bultman, and James A. Swenberg. "Abstract 2552: Detection of PIGO-deficient cells using proaerolysin: a valuable tool to investigate mechanisms of mutagenesis in the DT40 cell system." In Proceedings: AACR 103rd Annual Meeting 2012‐‐ Mar 31‐Apr 4, 2012; Chicago, IL. American Association for Cancer Research, 2012. http://dx.doi.org/10.1158/1538-7445.am2012-2552.
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Cheschini, Giuseppe Fabio, Fausto Carlevaro, Giuseppe Racioppi, and Andrea Masi. "Turbogroup Spare Part Optimization by Availability Centered Maintenance Methodology: An Application to LTSA Contract." In ASME Turbo Expo 2003, collocated with the 2003 International Joint Power Generation Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/gt2003-38816.
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Most Oil&Gas companies that currently outsource both maintenance and related engineering activities, by establishing Long Terms Service Agreements (LTSA) with engine manufacturers, base their contracts on several clauses. A minimum level of overall Plant Availability is usually to be guaranteed by the maintenance services supplier. Both parts agree upon this availability threshold and Bonus/Penalty clauses are based on this value. The Availability of a system is a non-linear function of: • Reliability, in terms of components life, system functional configuration and scheduled maintenance frequencies; • Maintainability, in terms of time to repair/restore, duration of scheduled maintenance tasks and special maintenance tools on site; • Logistics. Concerning Logistics, the problem is to define both the set and levels of spare parts in a warehouse for one or more installations (pooling) and the location of the warehouse itself. In this paper a solution for this problem is presented, based on RBD (Reliability Block Diagram) Monte Carlo simulation techniques and an associated What-If analysis. One of the deliverables of this optimisation process is the ranking of all the system components in terms of their influence on the availability of the whole system. This spare part list optimisation is one of the major deliverables of the discipline called ACM “Availability Centered Maintenance”, currently developed in Nuovo Pignone.
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Tap, F. A., R. Modi, and J. P. Van Buijtenen. "Liquid Fuel Spray Characterization for the Design of the Dual-Fuel PGT10B Combustor." In ASME Turbo Expo 2001: Power for Land, Sea, and Air. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/2001-gt-0044.
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The Dry Low NOx (DLN) silo combustor of the Nuovo Pignone PGT10B gas turbine is being redesigned to meet Dual-Fuel capability. A prototype with specially designed fuel injectors, placed on airfoil-shaped elements, was tested at cold conditions (using water instead of Diesel fuel) to map the spray mass distribution at the premixer exit. The resulting profile showed high concentrations of liquid near the premixer centerline and on the premixer wall. Parallel to this test, a small-scale experimental and numerical study was made of a single atomizer of the fuel system, placed in cross flow position. This small-scale study was launched in order to gain insight in the behavior of the spray, as well as to assess the relative importance of spray modeling parameters. The PDPA experiments and 2D CFD simulations of these experiments showed fair agreement on the average drop size distribution and drop size-velocity correlation. The flow visualization also revealed liquid film formation on the surface of the airfoil, behind the injector, due to the low atomization pressure differential at cold conditions. Using this modeling experience, the spray patternation test with the prototype combustor has been modeled using an existing 3D CFD model of the premixer. The model also showed high liquid concentration on the wall, but not near the centerline. From the results of the small-scale study it is concluded that the measured high concentration near the premixer centerline is not a result of the flow field. It is assumed that in the complete assembly the liquid film from the injector vanes accumulates on the center body, resulting in a high liquid concentration downstream on the premixer centerline. Overall, the application of CFD analyses on the tests performed proved to be a very useful tool to evaluate the test results. The modeling experience identified the important factors in modeling the fuel spray in a gas turbine environment, but further evolution of computer resources is required before large-scale test results will be reproducible with CFD models.
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Andreini, Antonio, Bruno Facchini, Luca Mangani, Stefano Cocchi, and Roberto Modi. "Fuel Flexibility Test Campaign on a GE10 Gas Turbine: Experimental and Numerical Results." In ASME Turbo Expo 2006: Power for Land, Sea, and Air. ASMEDC, 2006. http://dx.doi.org/10.1115/gt2006-90510.
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Medium- and low-LHV fuels are receiving a continuously growing interest in stationary power applications. Besides that, since in many applications the fuels available at a site can be time by time of significantly different composition, fuel flexibility has become one of the most important requirements to be taken into account in developing power systems. A test campaign, aimed to provide a preliminary assessment of a small power gas turbine’s fuel flexibility, was carried over a full-scale GE10 prototypical unit, located at the Nuovo-Pignone manufacturing site, in Florence. The engine is a single shaft, simple cycle gas turbine designed for power generation applications, rated at 11 MW electrical power and equipped with a silos-type combustor. A variable composition gas fuel was obtained by mixing natural gas with CO2 to about 40% by vol. at engine base-load condition. Tests involved two different diffusive combustion systems: the standard version, designed for operation with natural gas, and a specific system designed for low-LHV fuels. Tests performed aimed to investigate both ignition limits and combustors’ performances, focusing on hot parts’ temperatures and pollutant emissions. Regarding NOx emissions, data collected during standard combustor’s tests were matched a simple scaling law (as a function of cycle parameters and CO2 concentration in the fuel mixture), which can be used in similar applications as a NOx predictive tool. In a following step, a CFD study was performed in order to verify in detail the effects of LHV reduction on flame structure and to compare measured and calculated NOx. STAR-CD™ code was employed as main CFD solver while turbulent combustion and NOx models were specifically developed and implemented using STAR’s user-subroutine features. Both models are based on classical laminar-flamelet approach. Three different operating points were considered at base-load conditions, varying CO2 concentration (0%, 20% and 30% vol. simulated). Numerical simulations point out the flexibility of the GE10 standard combustor to assure flame stabilization even against large variation of fuel characteristics. Calculated NOx emissions are in fairly good agreement with measured data confirming the validity of the adopted models.