Academic literature on the topic 'Use case silhouette'
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Journal articles on the topic "Use case silhouette"
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Saif, A. F. M. Saifuddin, Md Akib Shahriar Khan, Abir Mohammad Hadi, Rahul Proshad Karmoker, and Joy Julian Gomes. "Silhouette Pose Feature-Based Human Action Classification Using Capsule Network." Journal of Information Technology Research 14, no. 2 (2021): 106–24. http://dx.doi.org/10.4018/jitr.2021040106.
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Recent years have seen a rise in the use of various machine learning techniques in computer vision, particularly in posing feature-based human action recognition which includes convolutional neural networks (CNN) and recurrent neural network (RNN). CNN-based methods are useful in recognizing human actions for combined motions (i.e., standing up, hand shaking, walking). However, in case of uncertainty of camera motion, occlusion, and multiple people, CNN suppresses important feature information and is not efficient enough to recognize variations for human action. Besides, RNN with long short-term memory (LSTM) requires more computational power to retain memories to classify human actions. This research proposes an extended framework based on capsule network using silhouette pose features to recognize human actions. Proposed extended framework achieved high accuracy of 95.64% which is higher than previous research methodology. Extensive experimental validation of the proposed extended framework reveals efficiency which is expected to contribute significantly in action recognition research.
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Thamrin, Nurafiza, and Arie Wahyu Wijayanto. "Comparison of Soft and Hard Clustering: A Case Study on Welfare Level in Cities on Java Island." Indonesian Journal of Statistics and Its Applications 5, no. 1 (2021): 141–60. http://dx.doi.org/10.29244/ijsa.v5i1p141-160.
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The National Medium Term Development Plan 2020-2024 states that one of the visions of national development is to accelerate the distribution of welfare and justice. Cluster analysis is analysis that grouping of objects into several smaller groups where the objects in one group have similar characteristics. This study was conducted to find the best clustering method and to classify cities based on the level of welfare in Java. In this study, the cluster analysis that used was hard clustering such as K-Means, K-Medoids (PAM and CLARA), and Hierarchical Agglomerative as well as soft clustering such as Fuzzy C Means. This study use elbow method, silhouette method, and gap statistics to determine the optimal number of clusters. From the evaluation results of the silhouette coefficient, dunn index, connectivity coefficient, and Sw/Sb ratio, it was found that the best cluster analysis was Agglomerative Ward Linkage which produced three clusters. The first cluster consists of 27 cities with moderate welfare, the second cluster consists of 16 cities with high welfare, the third cluster consists of 76 cities with low welfare. With the best clustering results, the government of cities in Java shall be able to make a better policies of welfare based on the dominant indicators found in each cluster.
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Wilkinson, MD, Jeffrey, and Amer M. Johri, MD. "Case File: Rapid Diagnosis of Pericardial Effusion." POCUS Journal 1, no. 3 (2016): 12. http://dx.doi.org/10.24908/pocus.v1i3.13258.
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Mr. DB was a 95 year old man who presented to the emergency department with dyspnea progressing over the last 3 months. Chest x-ray demonstrated an enlarged cardiac silhouette.
 He had a past medical history significant for coronary artery disease, hypertension and a lobectomy due to tuberculosis.
 A point of care cardiac ultrasound was conducted by an internal medicine resident as part of his physical examination in the emergency department. A large pericardial effusion was found. There were no clinical signs of tamponade.
 Video 1 (online supplement; Figure 1) demonstrates a parasternal long axis view with the pericardial effusion noted to be posterior to the left ventricle in this view. Video 2 (online supplement; Figure 2) is a short axis view of the heart which is showing that the effusion is surrounding the heart. Video 3 and 4 (online supplements; Figures 3 & 4) demonstrates that the pericardial effusion is present significantly surrounding the apex as well. An echocardiogram confirmed the POCUS findings and cardiology was consulted to conduct a pericardiocentesis, following which the patient’s symptoms resolved. The effusion was thought to be chronic and transudative. In this case, the use of POCUS at the bedside allowed for rapid detection of a large pericardial effusion and subsequent treatment.
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Pivarčiová, Elena, Daynier Rolando Delgado Sobrino, Yury Rafailovich Nikitin, Radovan Holubek, and Roman Ružarovský. "Measuring and evaluating the differences of compared images for a correct car silhouette categorization using integral transforms." Measurement Science Review 18, no. 4 (2018): 168–74. http://dx.doi.org/10.1515/msr-2018-0024.
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Abstract The present paper focuses on the analysis of the possibilities of using integral transforms for measuring and evaluating the differences of compared images (car silhouettes) with the purpose of a correct car body categorization. Approaches such as the light intensities frequency change, the application of discrete integral transforms without the use of further supplementary information enabling automated data processing using the Fourier-Mellin transforms are used within this work. The calculation of the several metrics was verified through different combinations that implied using and not using the Hamming window and a low-pass filter. The paper introduced a method for measuring and evaluating the differences in the compared images (car silhouettes). The proposed method relies on the fact that the integral transforms have their own transformants in the case of translation, scaling and rotation, in the frequency area. Besides, the Fourier-Mellin transform was to offer image transformation that is resistant to the translation, rotation and scale.
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Tomczuk, Piotr, Kazimierz Jamroz, Tomasz Mackun, and Marcin Chrzanowicz. "Lighting requirements for pedestrian crossings – positive contrast." MATEC Web of Conferences 262 (2019): 05015. http://dx.doi.org/10.1051/matecconf/201926205015.
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For many years now in Poland there has been a large number of road accidents at pedestrian crossings during night periods [5, 11]. One of the technical solutions that can improve this condition is the use of proper lighting for pedestrian crossings. The designated pedestrian crossing should be visible in different weather conditions and at different times of the day. In case of night vision restrictions use artificial lighting of pedestrian crossings. At the same time, lighting of pedestrian crossings should ensure: proper conditions for the driver to recognise the traffic situation and observe the pedestrian's silhouette, and for the pedestrian to observe the surroundings, pedestrian crossings and upcoming vehicles. The article gives an opinion on the proposal of lighting requirements for dedicated luminaires, realizing positive luminance contrast, used in the area of pedestrian crossings together with the proposed measurement grids. Quantitative requirements have been formulated taking into account the gradation of lighting classes resulting from the current lighting standard.
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Ramdani, Ahmad Luky, and Hafiz Budi Firmansyah. "Clustering Application for UKT Determination Using Pillar K-Means Clustering Algorithm and Flask Web Framework." Indonesian Journal of Artificial Intelligence and Data Mining 1, no. 2 (2018): 53. http://dx.doi.org/10.24014/ijaidm.v1i2.5126.
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Clustering is one of technique in data mining which has purpose to group data into a cluster. At the end, a cluster will have different data compared with others. This paper discussed about the implementation of clustering technique in determining UKT (Uang Kuliah Tinggal) / Tuition Fee in Indonesia. UKT is a tuition fee where its amount is determined by considering students purchasing power. Most of University in Indonesia often use manual technique in order to classify UKT’s group for each student. Using web-based application, this paper proposed a new approach to automatise UKT’s grouping which leads to give an reasonable recommendation in determining the UKT’s group. Pillar K-Means algorithm had been implemented to conduct data clustering. This algorithm used pillar algorithm to initiate centroid value in K-means algorithm. By deploying students data at Institut Teknologi Sumatera Lampung as case study, the result illustrated that Pillar K-Means and silhouette coefficient value might be adopted in determining UKT’s group
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Bui, Peter V., Sonia N. Zaveri, and J. Rush Pierce Jr. "Sanguineous Pericardial Effusion and Cardiac Tamponade in the Setting of Graves’ Disease: Report of a Case and Review of Previously Reported Cases." Case Reports in Medicine 2016 (2016): 1–6. http://dx.doi.org/10.1155/2016/9653412.
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Introduction. Pericardial effusion in the setting of hyperthyroidism is rare. We present a patient with Graves’ disease who developed a sanguineous pericardial effusion and cardiac tamponade.Case Description. A 76-year-old man presenting with fatigue was diagnosed with Graves’ disease and treated with methimazole. Two months later, he was hospitalized for uncontrolled atrial fibrillation. Electrocardiography showed diffuse low voltage and atrial fibrillation with rapid ventricular rate. Chest radiograph revealed an enlarged cardiac silhouette and left-sided pleural effusion. Thyroid stimulating hormone was undetectable, and free thyroxine was elevated. Diltiazem and heparin were started, and methimazole was increased. Transthoracic echocardiography revealed a large pericardial effusion with cardiac tamponade physiology. Pericardiocentesis obtained 1,050 mL of sanguineous fluid. The patient progressed to thyroid storm, treated with propylthiouracil, potassium iodine, hydrocortisone, and cholestyramine. Cultures and cytology of the pericardial fluid were negative. Thyroid hormone markers progressively normalized, and he improved clinically and was discharged.Discussion. We found 10 previously reported cases of pericardial effusions in the setting of hyperthyroidism. Heparin use may have contributed to the sanguineous nature of our patient’s pericardial effusion, but other reported cases occurred without anticoagulation. Sanguineous and nonsanguineous pericardial effusions and cardiac tamponade may be due to hyperthyroidism.
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Prayoga, Nur Restu, Tresna Maulana Fahrudin, Made Kamisutara, et al. "Unsupervised Twitter Sentiment Analysis on The Revision of Indonesian Code Law and the Anti-Corruption Law using Combination Method of Opinion Word and Agglomerative Hierarchical Clustering." EMITTER International Journal of Engineering Technology 8, no. 1 (2020): 200–220. http://dx.doi.org/10.24003/emitter.v8i1.477.
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The rejection on ratification of the revision of Indonesian Code Law or known as RKUHP and Corruption Law raises several opinions from various perspectives in social media. Twitter as one of many platforms affected, has more than 19.5 million users in Indonesia. Twitter is one of many social media in Indonesia where people can share their views, arguments, information, and opinions from all points of view. Since Twitter has a great diversity of users, it needs a system which is designed to determine the opinion tendency towards the problems or objects. The purpose of this study is to analyze the sentiment of Twitter users' tweets to reject the revision of the Law whether they have positive or negative sentiments using the Agglomerative Hierarchical Clustering method. The data that being used in this study were obtained from the results of crawling tweets based on hashtag (#) (#ReformasiDikorupsi). The next stage is pre-processing which consists of case folding, tokenizing, cleansing, sanitizing, and stemming. The extraction features Opinion words and Term Frequency (TF) which performs the process automatically. In the clustering stage, two clusters use three approaches; single linkage, complete linkage and average linkage. In the accuracy calculation phase, the writer uses the error ratio, confusion matrix, and silhouette coefficient. Therefore, the results are quite good. From 2408 tweets, the highest accuracy results are 61.6%.
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Lindenmayer, David, Michael Tanton, T. Linga, and Steve Craig. "Public Participation in Stagwatching Surveys of a Rare Mammal - Applications for Environmental and Public Education." Australian Journal of Environmental Education 7 (January 1991): 63–70. http://dx.doi.org/10.1017/s0814062600001865.
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There is increasing awareness of environmental issues in Australia (Victorian Government 1986, 1987). However, public participation in many such issues is typically limited to comment and submission on government policy, management plans and a range of other environmental statements. It is rare for the public to be involved in the scientific research upon which many environmental policies are based.Recent surveys for the rare and endangered Leadbeater's Possum, Gymnobelideus leadbeateri have been an exception to this trend (Lindenmayer et al. 1990a, 1990b, 1990c). These studies have used a new wildlife survey technique termed stagwatching (Lindenmayer, 1989; Lindenmayer & Press, 1989) involves observing and counting animals emerging from nest and den sites in very large living or dead trees with hollows (“stags”) at, or close to, dusk. Animals are observed and recognised in silhouette. Because many Australian animals regularly move between nest sites, stagwatching is dependent on simultaneously watching all stags in a known area (= 3 ha in this study) (Smith et al. 1989). This makes stagwatching extremely labour intensive and its success is dependent on substantial participation by the public. Our experience of this public support suggests that stagwatching has considerable value for use in public and environmental education to increase the awareness of methods of study and understanding of forest biology and conservation. The values of stagwatching in environmental education are identified in this paper, and a case study of the use of stagwatching in surveys for Leadbeater's Possum is also presented. The methods used to organise the stagwatching program are documented so they may be adopted and modified for teaching a range of topics about Australian forests.
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van Vuuren, Chantelle Y. Janse, and Hendrik J. Vermeulen. "Wind resource clustering based on statistical Weibull characteristics." Wind Engineering 43, no. 4 (2019): 359–76. http://dx.doi.org/10.1177/0309524x19858251.
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This investigation presents results for the clustering of wind resource data based on statistical Weibull characteristics. The clustering of a chosen geographical area is based on the Weibull and mean wind speed characteristics for each geospatial point for the high energy demand period. The geographically clustered area is chosen from one of the renewable energy development zones, which were identified by the Council of Scientific and Industrial Research. The renewable energy dataset used throughout this study represents the eight renewable energy zones through a meso-scale wind and solar dataset, which spans a 5-year period, at a 15-min temporal resolution. The clustering exercise is aimed at the identification of various geographical areas which best represent a specific independent power producers energy site expectations, while balancing factors such as grid stability and economic and environmental considerations. The study looks into various clustering factors, namely the demand seasons and the energy time of use periods, which correlate to energy production demands for the South African region. The clustering algorithms compared within this study include k-means clustering, the Clustering LARge Applications algorithm, the hierarchical agglomerative algorithm and a model-based clustering algorithm. The initial comparison study yielded the k-means algorithm as the best performing algorithm based on the following internal validation metrics: the Silhouette index, Dunn index and the Calinski-Harabasz index. This clustering method is then subsequently performed on various topical case studies.
Dissertations / Theses on the topic "Use case silhouette"
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Hsi, Idris. "Analyzing the Conceptual Integrity of Computing Applications Through Ontological Excavation and Analysis." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7211.
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In the world of commercial computing, consumers are being inundated with baroque, bloated, and difficult-to-use computing applications, tools that use computational methods and technologies to perform tasks. Market forces demand that new versions of these applications implement more features, the user-accessible behaviors and services implemented by the application, than their predecessors or competitors. Ensuring that planned features required for market competitiveness enhance a computing application without these side effects first requires that we understand how these features contribute to the overall design and conceptual integrity of the application
While conceptual integrity affects all aspect of the application, we are primarily interested in how an applications user-accessible features have been designed and implemented. To this end, we have developed a research framework, methodologies, and artifacts for measuring the conceptual integrity of a computing artifact from its theory of the world or its ontology. We use conceptual coherence, which we define as the degree to which an applications concepts are tightly related, as a first approximation for conceptual integrity.
We claim the following: any computing application has a central or core set of concepts that are essential to that applications ontology and can be identified through analytical means; and concepts that are not essential to an applications ontology either exist to support core concepts or are peripheral to the ontology. Peripheral concepts reduce an applications conceptual coherence.
We have developed the method of ontological excavation to identify the concepts in a computing application and model them as an ontology expressed as a semantic network. To identify core and peripheral concepts and to measure an ontologys conceptual coherence, we developed methodologies for ontological analysis.
If usefulness depends on the conceptual integrity of an applications ontology such that it ensures high fitness to a problem domain, then we would expect that users solving problems in that domain will invoke the concepts integral to the solution more often than those concepts that do not. Thus, to validate our structural measures, we claim the following: the probable use of the application will invoke core concepts more frequently than peripheral concepts in the ontology.
Book chapters on the topic "Use case silhouette"
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Hunsinger, Vincent, Martin Lhuaire, Ibrahim Dagher, and Laurent Lantieri. "Clinical Case Reports: Scar Prevention by Laser Treatment in Mastopexy With Implant." In Textbook on Scar Management. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-44766-3_59.
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AbstractIn this chapter, Vincent Hunsinger, MD, former chief of clinic in the department of Professor Lantieri at Georges Pompidou European Hospital in Paris and in post-bariatric silhouette surgery after massive weight loss under the direction of Professor Ibrahim Dagher (Hospital Antoine Beclère, Clamart, France) presents a technique of improvement of postoperative scars by the use of an automated 1210 nm diode laser system (UrgoTouch®). The interest of this technique is to limit/prevent postoperative hypertrophy and scar enlargement.
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Wong, James, and Reza Razavi. "Solitary indeterminate single ventricle with aortic atresia." In Challenging Concepts in Congenital and Acquired Heart Disease in the Young. Oxford University Press, 2020. http://dx.doi.org/10.1093/med/9780198759447.003.0009.
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A newborn baby weighing 2.3 kg presented to the children’s emergency department with signs of respiratory distress. Initial assessment demonstrated poor peripheral perfusion, weak peripheral pulses and an elevated blood lactate level. Transcutaneous saturations were 85% on air. There was tachycardia, which was out of proportion to tachypnoea. A chest radiograph showed an abnormal cardiac silhouette. After consulting with the regional paediatric cardiology team, the child was commenced on a prostaglandin infusion and a transfer was arranged. Transthoracic echocardiography demonstrated a functionally single ventricle of indeterminate origin with aortic atresia. A decision was made to proceed towards single ventricle palliation. Due to the child’s small size, banding of the branch pulmonary arteries was performed and the child remained on prostin infusion as an interim procedure. A Norwood operation was performed at 2 months of age. A 5-mm Sano conduit was inserted. The child was discharged from hospital at 3.5 months of age. Without an antenatal diagnosis, infants with aortic atresia or severe aortic stenosis and single ventricle physiology present early in the postnatal period with features of cardiogenic shock. Fluid resuscitation and administration of prostaglandin are essential. Unless echocardiography is available locally, the diagnosis may not be confirmed until transfer has been made to a cardiology centre. Usually echocardiography is sufficient to make the diagnosis, although additional imaging modalities, such as computed tomography, cardiac magnetic resonance, or cardiac catheterization, are occasionally required. The Norwood procedure is used as a palliative stepwise strategy. Mortality has improved dramatically in the last 30 years; however, there remains a burden of morbidity. This case explores the diagnosis, strategy, and common pitfalls often encountered in managing children with this new diagnosis.
Conference papers on the topic "Use case silhouette"
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Reid, Tahira, Richard Gonzalez, and Panos Papalambros. "A Methodology for Quantifying the Perceived Environmental Friendliness of Vehicle Silhouettes in Engineering Design." In ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-87095.
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Methods from psychology and engineering are used to quantify subjective, or perceptual, design attributes of artifacts. A modeling framework of perceptual attributes suitable for inclusion in design optimization is presented. The framework includes stimuli development based on design of experiments, survey design, and statistical analysis of data. The proposed modeling method is demonstrated on a subjective attribute we call ‘perceived environmental friendliness’ using vehicle silhouettes as a case study.
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Hsu, Tzu-Sheng Shane, Timothy Fitzgerald, Vincent Phuc Nguyen, and Balakumar Balachandran. "Large Motion Visualization and Estimation for Fluid-Structure Simulations." In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-46239.
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Studies of fluid-structure interactions associated with flexible structures such as flapping wings require the capture and quantification of large motions of bodies that may be opaque. As a case study, motion capture of a free flying insect is considered by using three synchronized high-speed cameras. A solid finite element (FE) representation is used as a reference body and successive snapshots in time of the displacement fields are reconstructed via an optimization procedure. One of the original aspects of this work is the formulation of an objective function and the use of shadow matching and strain-energy regularization. With this objective function, the authors penalize the shape differences between silhouettes of the captured images and the FE representation of the deformed body. A similar method with a three-dimensional voxel cloud (VC) reconstruction is also illustrated. Challenges faced in implementing the VC method are discussed and the current computational implementation will also be covered.