167 research outputs found
Image Search Engine for Digital History: A deep learning approach
No full textThis research investigates and describes an image search engine for digital history using deep learning technologies. It is part of the Engineering Historical Memory research, contributing to a multilingual and transcultural approach to decode-encode the treasure of human experience and transmit it to the next generation of world citizens. The engine provides a new way to search in online (historical) digital libraries using content-based image retrieval and makes linguistic metadata redundant. State-of-the-art deep learning methodologies in computer vision have been investigated and tested. These methodologies include both template-based matching and feature-based matching. A VGG16 Convolutional Neural Network based approach, called D2-Net, is concluded to provide the best basis. D2-Net is then further analyzed, improved, and optimized to run on a large dataset of more than 12k image combinations related to history, heritage, and art. The final implementation shows promising results with a precision of 0.96 and a recall of 0.44 on a challenging testing dataset. Future improvements include speed improvement and model training.Authors are listed in alphabetical order (Hardy-Littlewood Rule). https://github.com/EHM-Search-Engines/ISEDH-Deep-Learning Github repository containing the source code and documentation for this thesis.Engineering Historical MemoryElectrical Engineerin
Computationally Efficient Human Body Modelling for Real Time Motion Comfort Assessment
No full textDue to the complexity of the human body and its neuromuscular stabilization, it has been challenging to efficiently and accurately predict human motion and capture posture while being driven. Existing simple models of the seated human body are mostly two-dimensional and developed in the mid-sagittal plane exposed to in-plane excitation. Such models capture fore-aft and vertical motion but not the more complex 3D motions due to lateral loading. Advanced 3D full body active human models (AHMs), such as in MADYMO, can be used for comfort analysis and to investigate how vibrations influence the human body while being driven. However, such AHMs are very time-consuming due to their complexity. To effectively analyze motion comfort, a computationally efficient and accurate three dimensional (3D) human model, which runs faster than real time, is presented. The model's postural stabilization parameters are tuned using available 3D vibration data for head, trunk and pelvis translation and rotation. A comparison between AHM and EHM is conducted regarding human body kinematics. According to the results, the EHM model configuration with two neck joints, two torso bending joints, and a spinal compression joint accurately predicts body kinematics.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Intelligent Vehicle
Regulatory and Other Challenges to Pork Production
No full textBill Ehm, as chair of the Iowa Environmental Protection Commission, oversees environmental rules that are enforced by the Iowa Department of Natural Resources. Also a poultry producer, he works for Crestland Coop. He compared the pork industry to the poultry industry, which had left the state but now is returning with a different look. The pork industry may be going through similar changes.
Dave Pyburn said one of the biggest issues facing the pork industry today is food safety. What makes it difficult is that the industry must deal with more than just reality, but consumer perceptions about food safety. Already, all meat processing plants with more than 10 employees must have a Hazard Analysis Critical Control Point (HACCP) food safety system. Plants must address hazards in microbial, physical, and chemical forms.
Economist Helen Jensen presented information about two types of regulations, and the potential for new regulations.</p
BM roadmapping approach: overcoming the barriers for the implementation of Lead Time Based Pricing
No full textThis research explores the factors that challenge the implementation of Revenue Management (RM) in manufacturing industries. Previous research focused mainly on Order Management to explain how RM could be applied with studies that are mathematical by nature. However, there is no empirical study explaining the implementation process of RM in manufacturing industries. This research adopts a differential approach and methodology which aims at filling the existing implementation gap. First, to avoid vagueness, the research proposes Lead Time based Pricing as the specific RM strategy to pursue. Then, the research focuses on creating a roadmap for the RM implementation. In order to create such roadmap, the research focuses on the field of Business Model Innovation (BMI). In this field, the research describes the BM ontology and BM roadmapping, tools which will be used for constructing the roadmap. It proposes to combines BM roadmapping with the BMI process to help facilitating the task of roadmapping and finally, upon the discovery issues hindering the real implementation of RM, the research identifies BMI barriers which are, afterwards, compared with the data collected to confirm its significance on the RM (specifically LTBP) case. With the assistance of Infineon Technologies, a semiconductor manufacturer, the research approach chosen is an instrumental case study with semi-structured interviews as a data collection methodology. The data is quoted, codified and analyzed with Atlas.ti 8.0 and the information is useful to pursue the realization of the BM roadmapping, giving answer to the main research question of this research. Management of Technology (MoT
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‘At the breast is best?’ A corpus-informed feminist critical discourse analysis of the marginalisation of expressing human milk in online infant feeding promotional discourse
No full textExisting feminist analyses of infant feeding practices have examined the promotion of long-term exclusive direct breastfeeding (DBF) as symbolic of “total motherhood” (Wolf 2011), where formula feeding is framed in contrast as “risky” (Murphy 1999, 2000; Brookes et al. 2016; Woollard 2018). Discourses of expressing human milk (EHM), and their discriminatory potential, are currently under-researched. However, researchers note that rhetorical strategies that exclude EHM as a form of breastfeeding can reinforce the perceived normalcy of feeding at the breast and relegate breastmilk expression and formula feeding as “deviant” practices (Murphy 1999; Hunt and Thomson 2017; Rasmussen et al. 2017; [author] 2020; Anders et al. 2022).
To that end, this study integrates Feminist Critical Discourse Analysis (Lazar 2005, 2007, 2014) and corpus linguistics (e.g. Baker 2014) to examine discourses of breastmilk expression (EHM) in a corpus of online infant feeding promotional literature taken from seven organisations, with a particular focus on the largest two organisations in the corpus: La Leche League Great Britain (LLLGB) and the UK National Health Service (NHS). The analysis reveals language choices that marginalise EHM in servitude of “breast is best” (Murphy 1999), and specifically reinforce the message that ‘at the breast is best’. We show how EHM is marginalised in the texts via representations of exclusive DBF as the ‘gold standard’ of infant feeding, recirculating discourses of “total motherhood” (Wolf 2011), “natural mothering” (Bobel 2003) and “intensive motherhood” (Hays 1996)
Relationship between equine herpesvirus-1 viremia and abortion or equine herpesvirus myeloencephalopathy in domesticated horses: A systematic review
No full textBackground: Equine herpes virus type 1 (EHV-1) infection in horses is associated with upper respiratory disease, neurological disease, abortions, and neonatal death. Objective: To determine if there is an association between the level and duration of EHV-1 viremia and either abortion or equine herpesvirus myeloencephalopathy (EHM) in domesticated horses?. Methods: A systematic review was performed searching numerous databases to identify peer reviewed reports that evaluated viremia and EHM, or viremia and abortion published before January 19, 2021. Randomized controlled trials and observational studies were assessed for risk of bias or publication quality. Results: A total of 189 unique studies were identified, of which 34 met the inclusion criteria. Thirty studies evaluated viremia and neurologic outcomes including 4 observational studies. Eight experimental studies examined viremia and abortion, which used the Ab4 and OH03 virus strains or recombinant Ab4 derivatives. Incidence rates for both EHM and abortion in experimental studies varied among the studies as did the level of evidence. Viremia was generally detectable before the onset of either EHM or abortion. Risk of bias was generally low to moderate, sample sizes were small, and multiple studies reported negative outcome data. Conclusions and Clinical Importance: The results of this study support that viremia is regularly present before EHM or abortion occurs. However, no inferences could be made about the relationship between the occurrence of either neurological signs or abortion and the magnitude or duration of viremia
A phase II multicenter study of metastasectomy for intra- and extra-hepatic metastases from colorectal cancer.
No full text 482 Background: Metastasectomy for liver limited metastases from colorectal cancer (CRC) provides excellent 5-year overall survival (OS) rates. The presence of extra-hepatic metastases (EHM) has traditionally been a contraindication to surgery. On this basis, as many as 80% of patients are deemed ineligible for liver resection. Due to the improved safety of hepatic surgery, there is a growing interest in multi-site metastasectomy for patients with intra-hepatic and extra-hepatic metastases (IHM, and EHM). The objective of this study was to evaluate the results of complete metastasectomy for patients with IHM and EHM from CRC. Methods: A phase II study of metastasectomy for both IHM and EHM from CRC was conducted at 2 high volume hepato-pancreato-biliary (HPB) centers. Eligible patients with any number resectable IHM and up to 3 foci of EHM, resectable with RO intent were offered metastasectomy. Clinical and survival data was analyzed using standard statistical methods. Results: Twenty-five patients were enrolled with a median age of 57 (32-84) years; 14/25 (56%) patients presented with synchronous disease. The median number of IHM, EHM and combined sites were 2, 1 and 3, respectively. The lung was the most common site of EHM (12/25, 48%). Protocol surgery was completed in 18/25 (72%) including 11/25 (44%) planned sequential resections. Perioperative morbidity and mortality was 11/25 (44%) and 1/25 (4%), respectively. The median disease free survival was 6 months. The median OS from the time of CRC diagnosis, first metastasectomy and completion metastasectomy was 47, 27 and 23 months, respectively. Conclusions: Complete metastasectomy of multi-site CRC is feasible and safe. However, disease will recur in the majority of patients. The impact to aggressive multi-site metastasectomy is modest but may provide OS benefit in selected patients. </jats:p
IGFEM-based reduced-order modeling and design of nonlinear composites
No full textMotivated by significant advances in manufacturing, development of powerful computational techniques, and increases in computational capacity, the design of material microstructures with specific macroscopic behaviors has been investigated over the past two decades. The main challenges with the solution of these inverse problems is the computational cost associated with modeling the mechanical behavior of complex domains as optimization algorithms are usually iterative, requiring many evaluations of the domain response. For this reason, the majority of existing work on this subject focuses on linear theory.
In this work, a powerful nonlinear solver to model the failure of composite materials is developed using an Interface-enriched Generalized Finite Element Method (IGFEM). Cohesive interfacial failure and damage mechanisms in the constituents are the primary source of nonlinearity and the shape of material interfaces and nonlinear damage parameters are the key design variables used to obtain desired nonlinear macroscopic behaviors. Several three-dimensional particulate composite periodic unit cells are optimized to demonstrate the flexibility of IGFEM in the shape optimization process due to its use of a non-conforming mesh.
A reduced-order model based on integrating the IGFEM with the Eigendeformation-based reduced-order Homogenization Method (EHM) is then formulated to relieve the extreme computational cost of these large three-dimensional nonlinear finite element evaluations. A multi-resolution optimization scheme is presented to produce microstructure designs near the optimum quickly with the IGFEM-based EHM that are later refined with a high fidelity IGFEM-based optimizer. The damage parameters of several three-dimensional particulate composite microstructures are then designed using this method, showing dramatic deceases in the computational cost and improvements in the final designed material.Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2022-12-01The student, David Brandyberry, accepted the attached license on 2020-09-29 at 19:09.The student, David Brandyberry, submitted this Dissertation for approval on 2020-09-29 at 19:10.This Dissertation was approved for publication on 2020-10-13 at 14:51.DSpace SAF Submission Ingestion Package generated from Vireo submission #15821 on 2021-03-04 at 16:18:52Made available in DSpace on 2021-03-05T21:40:36Z (GMT). No. of bitstreams: 2
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Korrelationen zwischen der Kinematik und den Kraftanforderungen im Gerätturnen
No full textZiel dieser Studie war es, Zusammenhänge zwischen Kinematik und Kraftanforderungen an den Ringen im Gerätturnen zu ermitteln. Zu diesem Zweck wurde das Schwung- und Krafthalteelement Stemme rückwärts zum Kreuzhang gewählt und analysiert.
Die Datenerhebung erfolgte im Rahmen der Europameisterschaften 2022 in München. Für die Analyse der Kraftanforderungen wurde die vertikale Kraft in den Aufhängungen der Ringe mit eindimensionalen Kraftsensoren gemessen und für die Analyse der Kinematik ein markerloses Bewegungserfassungssystem eingesetzt.
Insgesamt wurden die Ausführungen von 17 professionellen Turnern untersucht. Für die Analyse der Kinematik wurden vier Ausführungsparameter bestimmt und deren Einfluss auf den Kraftbedarf statistisch analysiert, wobei die Kraftdaten auf das jeweilige Körpergewicht normiert wurden und das relative Kraftmaximum als Bezugspunkt für den Kraftbedarf gewählt wurde. Bei den vier Ausführungsparametern handelte es sich um die maximale Körpervorneigung während des Rückschwungs vor der Stemmbewegung des Elementes, den minimalen Arm-Rumpf-Winkel (ARW) während des Elementverlaufs, die höchste Position des Körperschwerpunktes (KSP) während des Elementverlaufs und die Distanz, um die der KSP von der höchsten Position in den Kreuzhang absinkt.
Es zeigte sich eine signifikante Korrelation zwischen der höchsten KSP-Position und dem Kraftmaximum. Für die anderen Ausführungsparameter konnten Tendenzen ermittelt werden. Darüber hinaus konnten die Korrelationen der Parameter untereinander zu zwei Ausführungsvarianten zusammengefasst werden. Dabei führt eine Ausführungsvariante zu einem größeren relativen Kraftmaximum und zu größeren Abzügen als die anderen. Die biomechanische Betrachtung dieser Ausführungsvarianten ergab jedoch, dass die Ausführungsvariante mit dem größeren mittleren Kraftmaximum dennoch leichter auszuführen ist, während die andere Ausführungsvariante in der Durchführung anspruchsvoller ist und besser bewertet wird.The aim of this study was to determine possible relationships between kinematics and strength requirements on the rings in apparatus gymnastics. For this purpose, the swing to strength hold element uprise backward to cross was analysed.
The data collection took place at the 2022 European Championships in Munich. For the analysis of the force requirements, the vertical force in the suspensions of the rings was measured with one-dimensional force sensors and a markerless motion capture system was used for the analysis of the kinematics.
In total, the performances of 17 professional gymnasts were examined. For the analysis of the kinematics, four execution parameters were determined and their influence on the force requirement was statistically analysed, whereby the force data was normalised to the respective body weight and the relative force maximum was chosen as the reference point for the force requirement. The four execution parameters were the maximum body forward lean during the backswing before the uprise movement, the minimum arm-torso angle during the element run, the highest position of the center of mass (COM) during the element and the distance by which the COM descends from the highest position into the cross-slope.
There was a significant correlation between the highest position of center of mass and the maximum force. Trends could be determined for the other execution parameters. In addition, the correlations between the parameters could be combined into two execution variants. One of the two variants leads to a larger relative maximum force and to larger deductions than the others. However, the biomechanical analysis of these execution variants showed that the execution variant with the larger average force maximum is nevertheless easier to execute, while the other execution variant is more demanding in execution and is rated better
The geology of the Lyons west oil field, Rice County, Kansas
No full textThesis (M.S.)-- Wichita State University, College of Liberal Arts and Sciences, Dept. of GeologyThe discovery well of the Lyons West field was drilled in February, 1963. More than 100 wells have been drilled in the field since that time and development is continuing toward the southwest at the present time. The sandstone production is controlled by a combination of structural and stratigraphic entrapment conditions. This reservoir was discovered by drill-stem testing a shallower previously undetected sandstone zone in a well which was drilled with the Arbuckle dolomite as the primary objective.
Complete agreement within the industry cannot be obtained concerning the age and stratigraphic relationship of the producing sandstone body even among the operators currently active in the field. Based on the results of stratigraphic and lithologic studies recently completed, it is the contention of this author that the producing unit under study is a Kinderhookian sandstone of Lower Mississippian age. Reservoir engineering problems exist in the form of abnormally high water production in certain wells which are structurally higher than wells which are water-free. It is also the contention of this author that the production of water is related to the physical parameters of the producing formation, such as grain size, permeability, interstitial cement and sorting rather than faulting, pinchouts of separate sandstones or differing ages or other phenomena used to describe this anomaly.Abstract -- Introduction -- Stratigraphy -- Structure -- Geologic history of Lyons west field area -- Field history -- Steve analysis study -- Formation pressure studies -- Fluid production -- Conclusion -- References -- Appendice
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