Academic literature on the topic 'Drawing Completion Test'
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Journal articles on the topic "Drawing Completion Test"
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Mattlar, Carl-Erik, Tomi Lindholm, Anne Haasiosalo, Päivi Vesala, Sari Rissanen, Helena Santasalo, Juha Veijola, Ville Lehtinen, and Pauli Pnukka. "Interrater Agreement when Assessing Alexithymia Using the Drawing Completion Test (Wartegg Zeichentest)." Psychotherapy and Psychosomatics 56, no. 1-2 (1991): 98–101. http://dx.doi.org/10.1159/000288538.
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Roivainen, Eka, and Piritta Ruuska. "The Use of Projective Drawings to Assess Alexithymia." European Journal of Psychological Assessment 21, no. 3 (January 2005): 199–201. http://dx.doi.org/10.1027/1015-5759.21.3.199.
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Abstract. Background: The goal of this study was to investigate whether the results of assessments of alexithymia based on a self-report questionnaire, the Toronto Alexithymia Scale (TAS), correlates with those based on drawing content in the Wartegg Drawing Completion Test (WZT). It was hypothesized that high alexithymia scores in the TAS are negatively correlated to the number of human drawings in the WZT. Method: Subjects were 83 patients of the Oulu Deaconess Institute, Oulu, Finland. Results: The TAS mean score for subjects with no human drawings was 56.0 compared to 45.4 for those with one or more human drawings (p < .001). Conclusions: The results can be considered encouraging concerning the overall usefulness and validity of the WZT. It is concluded that efforts to develop a psychometrically valid and reliable method of interpreting the WZT should be continued.
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Chan, Edgar, Sarah E. MacPherson, Gail Robinson, Martha Turner, Francesca Lecce, Tim Shallice, and Lisa Cipolotti. "Limitations of the Trail Making Test Part-B in Assessing Frontal Executive Dysfunction." Journal of the International Neuropsychological Society 21, no. 2 (February 2015): 169–74. http://dx.doi.org/10.1017/s135561771500003x.
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AbstractPart B of the Trail Making Test (TMT-B) is one of the most widely used neuropsychological tests of “executive” function. A commonly held assumption is that the TMT-B can be used to detect frontal executive dysfunction. However, so far, research evidence has been limited and somewhat inconclusive. In this retrospective study, performance on the TMT-B of 55 patients with known focal frontal lesions, 27 patients with focal non-frontal lesions and 70 healthy controls was compared. Completion time and the number of errors made were examined. Patients with frontal and non-frontal lesions performed significantly worse than healthy controls for both completion time and the number of errors. However, there was no significant difference for both completion time and the number of errors when patients with frontal and non-frontal lesions were compared. Performance was also not significantly different between patients with focal lesions within different regions of the frontal lobe (orbital, left lateral, right lateral, medial). Our findings suggest that the TMT-B is a robust test for detection of brain dysfunction. However, its capacity for detecting frontal executive dysfunction appears rather limited. Clinicians should be cautious when drawing conclusions from performance on the TMT-B alone. (JINS, 2015, 21, 169–174)
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Mizuta, Ichiro, Yoichi Inoue, Tomoko Fukunaga, Ryohei Ishi, Asao Ogawa, and Masatoshi Takeda. "Psychological characteristics of eating disorders as evidenced by the combined administration of questionnaires and two projective methods: the Tree Drawing Test (Baum Test) and the Sentence Completion Test." Psychiatry and Clinical Neurosciences 56, no. 1 (February 2002): 41–53. http://dx.doi.org/10.1046/j.1440-1819.2002.00928.x.
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Huddy, Vyv, and A. Mike Burton. "Generate and test: An alternative route to knowledge elicitation in an implicit learning task." Quarterly Journal of Experimental Psychology Section A 55, no. 4 (October 2002): 1093–107. http://dx.doi.org/10.1080/02724980244000242.
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Three experiments are reported, which examine generation of knowledge in the McGeorge and Burton (1990) invariant learning task. In this task, participants are exposed to 30 four-digit numbers containing an invariant “3”. Following this participants then demonstrate a preference for novel numbers containing this invariant over numbers without it. Despite above-chance performance on this pseudo-memory test, participants appear unable to verbalize anything pertinent to the invariant. Here we introduce a novel version of this task, relying on generation of items rather than a preference test. We argue that this new task engages different processing resources, resulting in different patterns of performance. In Experiment 1, invariant learning was demonstrated using a novel fragment completion test. Experiment 2 found that suppressing articulation inhibited learning, implying that this test task accesses phonological knowledge. It is suggested that using the fragment completion test engages different processing resources during test from those in a preference test. Experiment 3 reinforces this position by demonstrating that knowledge appears to transfer across surface features, a result that seems to contradict recent findings by Stadler, Warren, and Lesch (2000). A resolution is offered, drawing on episodic accounts of implicit learning.
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Kárpáti, Andrea, and Viktória Gyebnár. "The Test for Creative Thinking: An authentic tool for art education to assess creativity through visual expression." Visual Inquiry 2, no. 1 (March 1, 2013): 27–42. http://dx.doi.org/10.1386/vi.2.1.27_1.
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This article introduces a creativity test, an authentic and flexible assessment instrument that invites participants to create a meaningful image out of a set of visual signs. The elements offered for completion, repetition, modification, inclusion and composition are not culturally biased and invite the use of a variety of drawing styles. This test has been successfully used by art educators to identify talented students for enrolment in special courses and also by teachers who want to know more about the creative potentials of students who are verbally less fluent and therefore are not successful at school. In this article, we discuss the general findings of the Test for Creative Thinking/Drawing Production (TCT/DP) that was administered between 2000 and 2010 to 1050 children and young people aged 7-18 years during the course of the national standardization of this instrument. We compare two generally known and often discussed models of visual skills development created by Victor Lowenfeld, Howard Gardner, Ellen Winner and Jessica Davis in relation to the test results obtained from a comparison of Hungarian and German children. We focus on important issues of art education: cognitive growth manifest in visual language use, the issue of the 'drawing gap' in adolescence and the use or uselessness of developmental stages in relation to artistic performance.
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Berg, Roland. "THE FRANCK TEST FOR GENDER IDENTITY: CORRELATION WITH OCCUPATION AND LONG-TERM STABILITY OF SCORE IN NORMAL MEN." Social Behavior and Personality: an international journal 13, no. 1 (January 1, 1985): 83–89. http://dx.doi.org/10.2224/sbp.1985.13.1.83.
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The projective Franck Drawing Completion Test (FDCT) is assumed to reflect the unconscious gender identity. A community sample of 42 men aged 20–34 years completed the test. A correlation was found between high (independent) occupational positions and masculine scores of she FDCT After seven years a re-test was performed by 27 men. This yielded an acceptable individual long-term stability in particular of the clinically important gender-opposite scores. The FDCT appears to relate to aspects of masculinity such as activity, expansion, and outward social commitment. As the test is truly non-obvious to the subject it is useful in the clinical investigation of for instance persons seeking sex reassignment.
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Chen, Siyi, Qi-Yang Nie, Hermann J. Müller, and Markus Conci. "Kanizsa-figure object completion gates selection in the attentional blink." Quarterly Journal of Experimental Psychology 72, no. 7 (January 11, 2019): 1741–55. http://dx.doi.org/10.1177/1747021818820009.
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Previous work has demonstrated that perceptual grouping modulates the selectivity of attention across space. By contrast, how grouping influences the allocation of attention over time is much less clear. This study investigated this issue, using an attentional blink (AB) paradigm to test how grouping influences the initial selection and the subsequent short-term memory consolidation of a target. On a given trial, two red Kanizsa-type targets (T1 and T2) with varying grouping strength were embedded in a rapid serial visual presentation stream of irrelevant distractors. Our results showed the typical AB finding: impaired identification of T2 when presented close in time following T1. Moreover, the AB was modulated by the T2 grouping—independently of the T1 structure—with stronger grouping leading to a decreased AB and overall higher performance. Conversely, a reversed pattern, namely an increased AB with increasing grouping strength was observed when the Kanizsa figure was not task-relevant. Together, these findings suggest that the grouping benefit emerges at early perceptual stages, automatically drawing attentional resources, thereby leading to either sustained benefits or transient costs—depending on the task-relevance of the grouped object. This indicates that grouping modulates processing of objects in time.
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Yuana, Rosihan Ari, Dewanto Harjunowibowo, Nugraha Arif Karyanta, and Cucuk Wawan Budiyanto. "Data Similarity Filtering of Wartegg Personality Test Result using Cosine-Similarity." International Journal of Recent Contributions from Engineering, Science & IT (iJES) 6, no. 3 (November 8, 2018): 19. http://dx.doi.org/10.3991/ijes.v6i3.9413.
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Wartegg test is a widely adopted personality evaluation instrument known for its drawing completion technique. Employee personality data, for instance, can be sorted by the closest similarity with the expected characters. Whereas, Wartegg test plays a significant role in data similarity filtering. Despite the potential contribution of personal characters identification technique, practical guidance is rarely found in the literature. This paper demonstrates the usage of cosine-similarity method for data similarity filtering on Wartegg personality test. The method used in this study is a case study, in which will be selected several Wartegg test subjects. By using the value of each character aspect derived from the Wartegg test, the cosine-similarity value will be calculated against the expected/ideal aspect character. Based on this value, the Wartegg test subjects will be filtered based on similarity to the expected/ideal character aspects. A technical procedure to perform the method is also presented in this paper. In order to find out the effectiveness, sample data scores of each character aspect from five test subjects, and also the ideal scores of the expected characters are given. By using FWAT, a graphical representation of the test subjects' characters to the ideal characters is generated. Then, this graph was compared to the results obtained from the cosine-similarity method. Drawn from the results, the cosine-similarity is effectively applied for Wartegg test data similarity filtering.
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Cohen, Jamie, Dana L. Penney, Randall Davis, David J. Libon, Rodney A. Swenson, Olusola Ajilore, Anand Kumar, and Melissa Lamar. "Digital Clock Drawing: Differentiating “Thinking” versus “Doing” in Younger and Older Adults with Depression." Journal of the International Neuropsychological Society 20, no. 9 (September 15, 2014): 920–28. http://dx.doi.org/10.1017/s1355617714000757.
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AbstractPsychomotor slowing has been documented in depression. The digital Clock Drawing Test (dCDT) provides: (i) a novel technique to assess both cognitive and motor aspects of psychomotor speed within the same task and (ii) the potential to uncover subtleties of behavior not previously detected with non-digitized modes of data collection. Using digitized pen technology in 106 participants grouped by Age (younger/older) and Affect (euthymic/unmedicated depressed), we recorded cognitive and motor output by capturing how the clock is drawn rather than focusing on the final product. We divided time to completion (TTC) for Command and Copy conditions of the dCDT into metrics of percent of drawing (%Ink) versus non-drawing (%Think) time. We also obtained composite Z-scores of cognition, including attention/information processing (AIP), to explore associations of %Ink and %Think times to cognitive and motor performance. Despite equivalent TTC, %Ink and %Think Command times (Copy n.s.) were significant (AgeXAffect interaction: p=.03)—younger depressed spent a smaller proportion of time drawing relative to thinking compared to the older depressed group. Command %Think time negatively correlated with AIP in the older depressed group (r=−.46; p=.02). Copy %Think time negatively correlated with AIP in the younger depressed (r=−.47; p=.03) and older euthymic groups (r=−.51; p=.01). The dCDT differentiated aspects of psychomotor slowing in depression regardless of age, while dCDT/cognitive associates for younger adults with depression mimicked patterns of older euthymics. (JINS, 2014, 20, 1–9)
Dissertations / Theses on the topic "Drawing Completion Test"
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Volkmer, Toni. "Multivariate Approximation and High-Dimensional Sparse FFT Based on Rank-1 Lattice Sampling." Doctoral thesis, Universitätsbibliothek Chemnitz, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-222820.
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In this work, the fast evaluation and reconstruction of multivariate trigonometric polynomials with frequencies supported on arbitrary index sets of finite cardinality is considered, where rank-1 lattices are used as spatial discretizations. The approximation of multivariate smooth periodic functions by trigonometric polynomials is studied, based on a one-dimensional FFT applied to function samples. The smoothness of the functions is characterized via the decay of their Fourier coefficients, and various estimates for sampling errors are shown, complemented by numerical tests for up to 25 dimensions. In addition, the special case of perturbed rank-1 lattice nodes is considered, and a fast Taylor expansion based approximation method is developed. One main contribution is the transfer of the methods to the non-periodic case. Multivariate algebraic polynomials in Chebyshev form are used as ansatz functions and rank-1 Chebyshev lattices as spatial discretizations. This strategy allows for using fast algorithms based on a one-dimensional DCT. The smoothness of a function can be characterized via the decay of its Chebyshev coefficients. From this point of view, estimates for sampling errors are shown as well as numerical tests for up to 25 dimensions. A further main contribution is the development of a high-dimensional sparse FFT method based on rank-1 lattice sampling, which allows for determining unknown frequency locations belonging to the approximately largest Fourier or Chebyshev coefficients of a functionIn dieser Arbeit wird die schnelle Auswertung und Rekonstruktion multivariater trigonometrischer Polynome mit Frequenzen aus beliebigen Indexmengen endlicher Kardinalität betrachtet, wobei Rang-1-Gitter (rank-1 lattices) als Diskretisierung im Ortsbereich verwendet werden. Die Approximation multivariater glatter periodischer Funktionen durch trigonometrische Polynome wird untersucht, wobei Approximanten mittels einer eindimensionalen FFT (schnellen Fourier-Transformation) angewandt auf Funktionswerte ermittelt werden. Die Glattheit von Funktionen wird durch den Abfall ihrer Fourier-Koeffizienten charakterisiert und mehrere Abschätzungen für den Abtastfehler werden gezeigt, ergänzt durch numerische Tests für bis zu 25 Raumdimensionen. Zusätzlich wird der Spezialfall gestörter Rang-1-Gitter-Knoten betrachtet, und es wird eine schnelle Approximationsmethode basierend auf Taylorentwicklung vorgestellt. Ein wichtiger Beitrag dieser Arbeit ist die Übertragung der Methoden vom periodischen auf den nicht-periodischen Fall. Multivariate algebraische Polynome in Chebyshev-Form werden als Ansatzfunktionen verwendet und sogenannte Rang-1-Chebyshev-Gitter als Diskretisierungen im Ortsbereich. Diese Strategie ermöglicht die Verwendung schneller Algorithmen basierend auf einer eindimensionalen DCT (diskreten Kosinustransformation). Die Glattheit von Funktionen kann durch den Abfall ihrer Chebyshev-Koeffizienten charakterisiert werden. Unter diesem Gesichtspunkt werden Abschätzungen für Abtastfehler gezeigt sowie numerische Tests für bis zu 25 Raumdimensionen. Ein weiterer wichtiger Beitrag ist die Entwicklung einer Methode zur Berechnung einer hochdimensionalen dünnbesetzten FFT basierend auf Abtastwerten an Rang-1-Gittern, wobei diese Methode die Bestimmung unbekannter Frequenzen ermöglicht, welche zu den näherungsweise größten Fourier- oder Chebyshev-Koeffizienten einer Funktion gehören
Book chapters on the topic "Drawing Completion Test"
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Liu, Lili, Graziella Pettinati, and Ching Y. Suen. "Computer-Aided Wartegg Drawing Completion Test." In Pattern Recognition and Artificial Intelligence, 575–80. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-59830-3_50.
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Crisi, Alessandro. "Wartegg Drawing Completion Test (WDCT) for assessing disordered thought and perception." In Psychological assessment of disordered thinking and perception., 187–206. Washington: American Psychological Association, 2021. http://dx.doi.org/10.1037/0000245-012.
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Tufanova, Olga A. "The Parables in Ivan Timofeev’s Temporary: Typology and Artistic Specific." In Hermeneutics of Old Russian Literature: Issue 20, 292–313. А.M. Gorky Institute of World Literature of the Russian Academy of Sciences, 2021. http://dx.doi.org/10.22455/horl.1607-6192-2021-20-292-313.
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The purpose of the article is to identify the specifics of the parable’s genre form in the Temporary by Ivan Timofeev. Among the full-text “parables- narrations” in the text we can distinguish parables-stories, parables-reflections, parables-instructions. The parables-stories (The Parable of the Tsar’s Roman Son ... and two parables about the widowhood of the Muscovy) are distinguished by a developed plot and represent vital examples told in order to edify and clarify the author’s attitude to historical events and persons. All parables have a two- part structure. The first part is a plot, the second is an interpretation. The technique of abstraction is appeared in the absence of a portrait and nature in many of the characters and in the absence of the historical and geographical realities. At the same time, didacticism is skillfully combined with amusement. For example, in The Parable of the Tsar’s Roman Son... the plot is entertaining with an element of the miraculous, there are elements atypical for the “classical” genre form: various kinds of the motivation for the characters’ actions, as well as a conventional portrait. The second part in the parables-stories is an interpretation that doesn’t contain a detailed disclosure of the allegory, and a prayer to the Lord, returning to the events of the Time of Troubles. An intermediate position between “parables-narrations” and “parables-maxims” is occupied by the parable of two friends. Being an example from life in content, it is close in form to apothegms. The interpretation of the plot situation is not singled out in a parable-reflection in a separate part, it is organically woven into the plot, drawing in the potential possibility of the events development. The plot of the parable about simple natural affairs reminds the instruction of how a person should act when he wants to travel to some city or another country. A laconic interpretation testifies to the fact that the parable-instruction about the completion of the path is applicable, according to Timofeev, to the creative process of writing a historical essay. In general, the parables scattered in many fragments of the text, given in full or only indicated, are a kind of companions that help not only create an extensive historical work, but also comprehend the unusual events of the Time of Troubles.
Conference papers on the topic "Drawing Completion Test"
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Fu, Jin, Xi Wang, Guobin Yang, Shunyuan Zhang, Chen Chen, and Haochen Han. "An Intelligent Completion and Artificial Lift Technology to Develop Large Carbonate Reservoirs: Novel Completion and Zonal Water Injection via Remote Control Methods to Develop Horizontal Wells." In SPE Trinidad and Tobago Section Energy Resources Conference. SPE, 2021. http://dx.doi.org/10.2118/200915-ms.
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Abstract There are several large carbonate reservoirs that have drawn great attention of researchers in recent years. After optimization of drilling technologies, how to deploy artificial lift technologies to develop them more efficiently is another concern. Conventional zonal water injection technologies require repetitive operation with wirelines and cables, causing extensive tests and low efficiency. However, an intelligent zonal water injection string consisting of several preset cable packers, water injection pressure gauges, formation pressure gauges and downhole flow meters has simply optimized water injection parameters and efficiently developed all reservoirs in some China's mature oilfields, especially when the string is integrated with remote monitoring and control methodologies. With the rapid development of horizontal drilling and extended reach well drilling technologies, borehole conditions are becoming more and more complicated, which has brought more challenges to water adsorption testing of horizontal intervals and deployment of zonal water injection instruments. Compared with vertical wells, the water adsorption test and string running are more challenging for horizontal wells, in which we are faced by many a problem during zonal water injection, such as competitive slack off and tight pull, excessive or inadequate water injection, complicated operation process. Besides, well deviation, dog leg and horizontal section length shall be all taken into consideration during zonal water injection for horizontal wells. Therefore, novel strings and tools should be deployed. Now tight pull, slack off and long operation periods are common problems during zonal water injection of horizontal intervals. After dedicated research, a set of wireless intelligent water injection strings for horizontal wells has been invented. Based on pressure pulse water distribution technique, the water injection string is eligible for 32-stage adjustment, so one strip may accomplish testing, adjusting, injection, measurement and downhole data collection, in addition to automatic error correction during water injection. The field trial shows that this novel string may be tripped in and out smoothly, packers are set securely and released easily, in order to adjust opening of each water injection nozzle in the ground, with an error of no more than ±10%. Therefore, the novel completion and water zonal water injection string is capable of injecting water precisely via remote control methods. The wireless intelligent water injection string for horizontal wells that combines testing, adjusting, injection, measuring and data collection in one trip provides us with many downhole data, such as pressure, flow rate, temperature and so on. Therefore, water injection volume for each zone is monitored and controlled down hole. This technology is applicable for both horizontal and vertical wells that require zonal water injection.
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Bouillon, Eric P., Greg C. Ojard, G. Habarou, Patrick C. Spriet, Jean L. Lecordix, David T. Feindel, Gary D. Linsey, and Doug P. Stetson. "Characterization and Nozzle Test Experience of a Self Sealing Ceramic Matrix Composite for Gas Turbine Applications." In ASME Turbo Expo 2002: Power for Land, Sea, and Air. ASMEDC, 2002. http://dx.doi.org/10.1115/gt2002-30458.
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Advanced materials have the potential to improve gas turbine engine durability. One general area of concern for durability is in the hot section components of the engine. Ceramic matrix composites offer improvements in durability at elevated temperatures with a corresponding reduction in weight for nozzles of gas turbine engines. Building on past material efforts, a next generation SiC/SiC composite with a self-sealing matrix has been developed for gas turbine applications. An extensive baseline test characterization has been done that shows the overall material suitability. Prior to ground engine testing, a reduced test matrix was undertaken to aggressively test the material in a long-term hold cycle at elevated temperatures and environments. This tensile low cycle fatigue testing was done in air and a 90% steam environment. While the steam environment aggressively attacked the material, no appreciable debit in material life was noted. Nondestructive testing and post test characterization of this testing were performed. After completion of the aggressive testing effort, two nozzle seals of constant thickness were fabricated and installed in an F100-PW-229 engine for accelerated mission testing. The self sealing CMC seals were tested for over 250 hours in accelerated conditions without damage. The results of the engine testing will be shown and overall conclusions drawn.
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Bouillon, Eric P., Patrick C. Spriet, Georges Habarou, Thibault Arnold, Greg C. Ojard, David T. Feindel, Charles P. Logan, et al. "Engine Test Experience and Characterization of Self Sealing Ceramic Matrix Composites for Nozzle Applications in Gas Turbine Engines." In ASME Turbo Expo 2003, collocated with the 2003 International Joint Power Generation Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/gt2003-38967.
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Advanced materials are targeting durability improvement in gas turbine engines. One general area of concern for durability is in the hot section components of the engine. Ceramic matrix composites offer improvements in durability at elevated temperatures with a corresponding reduction in weight for nozzles of gas turbine engines. Building on past material efforts, ceramic matrix composites using a carbon and a SiC fiber with a self-sealing matrix have been developed for gas turbine applications. Prior to ground engine testing, a reduced test matrix was undertaken to aggressively test the material in a long-term hold cycle at elevated temperatures and environments. This tensile low cycle fatigue testing was done in air and a 90% steam environment. After completion of the aggressive testing effort, six nozzle seals were fabricated and installed in an F100-PW-229 engine for accelerated mission testing. The C fiber CMC and the SiC Fiber CMC were respectively tested to 600 and 1000 hours in accelerated conditions without damage. Engine testing is continuing to gain additional time and insight with the objective of pursuing the next phase of field service evaluation. Mechanical testing and post-test characterization results of this testing will be presented. The results of the engine testing will be shown and overall conclusions drawn.
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DeVoe, Jason, Stephen Odom, and Lev Ginzbursky. "Uniform Crystal Temperature Sensor Accuracy Under Transient Conditions." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-68197.
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This paper investigates the accuracy of Uniform Crystal Temperature Sensors (UCTS) under transient conditions and describes a methodology for addressing sources of systematic error based on the findings. The study applies to the important task of thermal mapping of critical turbine parts during the engine development phase, for which UCTS is particularly well suited [1, 2, 3, 4]. A previous study focused on UCTS in steady state regimes and provided recommendations for optimizing the technique [5]. However, a substantial reduction in engine development costs may be achieved by being able to combine, for instance cyclic endurance tests with thermal mapping assuming that neither task will jeopardize the other. The basic trends and magnitude of measurement errors were assessed as a function of factors such as UCTS installation configuration, thermo-physical properties of the installation materials and cycle characteristics. The authors used Finite Element Analysis to simulate transient heat transfer through a thin wall with an embedded UCTS. Stress calculations performed for the case of densely packed multi-UCTS installation on turbine blades showed no detrimental influence of standard micro-cavities on blade structural characteristics. These results were confirmed by a number of successful endurance tests, proving its compatibility with the task of thermography. Attention was focused on the cyclic test influence on the accuracy of thermal mapping. Single and multiple cycle test configurations have been considered. After completion of a computational matrix, the characteristic results of interest are presented in the form of plots and diagrams to support the technical discussion. Recommendations drawn from this research will help analytical designers, test and instrumentation engineers to plan and execute dual task transient tests with a high accuracy of thermal mapping result interpretation.
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Itotoi, Ibi-Ada, Taju Gbadamosi, Christian Ihwiwhu, Udeme John, Anita Odiete, Precious Okoro, Maduabuchi Ndubueze, Erome Utunedi, Adedeji Awujoola, and Sola Adesanya. "Produced Water Re-Injection: An Integrated Subsurface Approach to Planning and Execution for Downhole Produced Water Disposal in the Niger Delta." In SPE Nigeria Annual International Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/207088-ms.
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Abstract Low oil price and increased environmental regulations presents a new frontier for many indigenous oil and gas companies in Nigeria. In mature fields with significant water production, produced water treatment and handling could easily account for up to a third of OPEX. Underground produced water disposal is a tested approach that has been used worldwide with mixed results. Studies have been published on the subject; however, it was observed that there were no Niger Delta case studies. This paper presents SEPLAT's subsurface approach to in-field water disposal, drawing upon geological and petroleum engineering analysis coupled with learnings from over 6 years of produced water re-injection experience. Some of the areas that will be discussed include reservoir selection/screening methodology, water quality impact on permeability, produced water disposal well selection/completion, operating philosophy, general surveillance, and basic separation requirements. Thirteen reservoirs located within 2 proximal fields were screened for suitability and ranked as possible candidates for water disposal based on 8 criteria. The best 2 were then high-graded and detailed studies carried out, spanning detailed geological characterization for reservoir quality and connectivity (including quantitative interpretation), to dynamic simulation, injection well location optimization and performance prediction (for clean water). The results of core flood tests were incorporated. It is recommended that total suspended solids should not exceed 5 mg/L, with a maximum of 5 microns particle size, under matrix injection conditions while oil content should be limited to below 30-50 ppm. Tolerance for TSS can be relaxed to 10ppm – 50ppm at fracturing conditions, depending on the reservoir parameters and process systems. The knowledge of these parameters should drive the technology selection for optimum water treatment and injection.
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Sinha, Shailendra, and Avinash Kumar Agarwal. "Experimental Investigation of the Effect of Biodiesel Utilization on Lubricating Oil Degradation and Wear of a Transportation CIDI Engine." In ASME 2007 Internal Combustion Engine Division Fall Technical Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/icef2007-1721.
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Increased environmental awareness and depletion of fossil petroleum resources are driving industry to develop alternative fuels that are environmentally more acceptable. Biodiesel is an alternative fuel derived from vegetable oils by modifying its molecular structure. In the present experimental research work, methyl ester of rice-bran oil (ROME) is derived through transesterification of rice-bran oil using methanol in presence of sodium hydroxide (NaOH) catalyst. On the basis of previous research for performance, emission and combustion characteristics, a 20% blend of ROME (B20) was selected as optimum biodiesel blend. In the present research, the experimental investigation was aimed to investigate the effect of biodiesel on wear of in-cylinder components. Endurance tests were conducted on a medium duty direct injection transportation diesel engine with 20% blend of the ROME with mineral diesel. Tests were conducted under predetermined loading cycles in two phases: engine operating on mineral diesel and engine fuelled with 20% biodiesel blend. After completion of the tests, engines were dismantled for observing the physical condition of the various parts, e.g. piston rings, bearings, cylinder liner, cylinder head etc. Physical measurements of various vital parts were also carried out to assess the wear of the parts of engine. The physical wear of various parts except big end bearings were found to be lower in case of 20% biodiesel fuelled engine. Wear metals in the lubricating oil samples drawn from the engines at regular intervals were investigated. Relatively lower wear concentration of all wear metals except lead were found in the lubricating oil of B20 fuelled engine. Two quantify the wear of cylinder liners, surface parameters at different locations in the liner (TDC, BDC and mid-stroke) were measured and investigated. A qualitative analysis was also carried out by taking surface profiles and conducting scanning electron microscopy at same locations.
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Ouillette, Joanne J. "Designing the Future DDG 51 Class Computer Aided Design." In ASME 1993 International Computers in Engineering Conference and Exposition. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/edm1993-0105.
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Abstract The DDG 51 Class of AEGIS guided missile destroyers is the Navy’s premier surface combatant. Named for famed World War II hero. Admiral Arleigh Burke, these ships represent state-of-the-art technology. This 504 foot, 8,300 ton destroyer has been designed with improved seakeeping and survivability characteristics and carries the sophisticated AEGIS Weapon System. Derived from the Greek word meaning “shield”, AEGIS ships are the “shield of the fleet”. The Navy has commissioned the first two ships of the class. They have performed beyond expectation in rigorous at-sea trials designed to fully test combat capability. The DDG 51 Class ships are replacing retiring fleet assets. In a decreasing Department of Defense (DoD) budget environment, however, acquisition costs must be reduced to continue to build capable warships. The Navy’s Destroyer Program Office is pursuing the implementation of Computer Aided Design (CAD) and Computer Aided Manufacturing (CAM) technology to reduce costs without reducing ship’s capability. Under Navy direction, the ship construction yards, Bath Iron Works and Ingalls Shipbuilding, are aggressively pursuing the transition to CAD-based design, construction, and life cycle support This effort also involves General Electric, the Combat System Engineering Agent. Building a three dimensional (3D) computer model of the ship prior to construction will facilitate the identification and resolution of interferences and interface problems that would otherwise go undetected until actual ship construction. This 3D database contains geometry and design data to support system design. Accurate construction drawings, fabrication sketches, and Numerical Control (NC) data can be extracted directly from the database to support construction at each shipyard. At completion of construction, a model representing the “as built” configuration will be provided as a lifetime support tool for each ship’s projected 40 year life. The transition to CAD-based design and construction has applied fundamental concepts of the DoD’s Computer Aided Acquisition and Logistic Support (CALS) initiative. In addition to creating a 3D database representing ship design, the shipyards have developed a neutral file translator to exchange this data between Computervision and Calma CAD systems in operation at Bath Iron Works and Ingalls Shipbuilding respectively. This object oriented transfer capability ensures data is shared rather than duplicated. The CALS concepts of concurrent engineering and computer aided engineering analysis are being applied to design an upgrade to the ship that features the addition of a helicopter hanger. The CAD models are used as an electronic baseline from which to assess proposed modifications. Optimizing the design before the first piece of steel is cut will reduce construction costs and improve the quality of the ship.