Relevant bibliographies by topics / 68T37

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  2. Dissertations / Theses
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Academic literature on the topic '68T37'

Author: Grafiati
Published: 1 June 2024

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Journal articles on the topic "68T37"

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Brand, Quentin. "Notes of a Crocodile, Qiu Miaojin (2017)." East Asian Journal of Popular Culture 6, no. 1 (April 1, 2020): 135–41. http://dx.doi.org/10.1386/eapc_00020_5.

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Stryukova, N. "Invasive insects in the Republic of Crimea." Актуальные направления научных исследований XXI века: теория и практика 2, no. 6 (December 3, 2014): 119–24. http://dx.doi.org/10.12737/6837.

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Singh, C. "Diversity and Perspective of Macrophytes in the Wetlands of North Bihar, India." Indian Journal of Forestry 34, no. 2 (June 1, 2011): 229–38. http://dx.doi.org/10.54207/bsmps1000-2011-a58186.

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The wetlands of North Bihar harbour diverse macrophytes in free floating (8.55%), rooted floating (12.82%), unanchored submerged (3.42%), anchored submerged (6.84%) and emergent (68.37%) forms. The emergent habit appears to be fittest for survival in all the wetlands (ditches, lakes, ponds, chaurs, marshes). Amongst the recorded 117 species of macrophytes, the monocots (50.42%) dominate over algae (1.71%), ferns (2.57%) and dicots (45.30%).
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Moriarty, Aidan, Oihana Iriondo, Yonatan Amzaleg, Remi Klotz, and Min Yu. "Abstract 6837: Prolonged effects of hypoxia in luminal breast cancer cells." Cancer Research 84, no. 6_Supplement (March 22, 2024): 6837. http://dx.doi.org/10.1158/1538-7445.am2024-6837.

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Abstract Metastasis is the main cause of tumor-related mortality in breast cancer patients. Improving our understanding of the metastatic cascade is imperative to improve patient outcomes. Prior research indicates cancer cells with increased metastatic potential have acquired adaptive properties induced by factors in the tumor microenvironment (TME), including hypoxia. However, previous hypoxia research has primarily focused on signaling changes that occur when cancer cells are in the hypoxic TME and does not account for long-term changes that may occur once cancer cells re-enter normoxia, such as when they metastasize. Our research in patient-derived circulating tumor cell (CTCs) lines and breast cancer cell lines indicates that certain transcriptional changes are maintained after cells leave hypoxia, and that these post-hypoxic cells maintain a higher metastatic potential compared to cells not exposed to hypoxia. Taking an un-biased approach to define changes in hypoxia-exposed breast cancer cells upon reoxygenation, we performed bulk RNA-Seq on post-hypoxic luminal breast cancer cell lines compared to normoxic controls cultured either in adherent or suspension conditions, the latter to mimic the physiological context of CTCs. We found that a subset of genes that were differentially expressed in hypoxic conditions were maintained as up- or down-regulated after cells were reoxygenated, indicating a “hypoxic memory”. Additionally, a subset of differentially expressed genes were unique to the post-hypoxic cells, demonstrating both prolonged and novel gene expression changes induced by hypoxia exposure. We also performed functional assays and observed that this post-hypoxic state is associated with a more aggressive phenotype. Current research in our lab is on-going to understand the epigenetic changes that may be responsible for this hypoxic memory. Overall, this research will improve our understanding of the prolonged consequences of hypoxia on CTC biology and metastasis. Citation Format: Aidan Moriarty, Oihana Iriondo, Yonatan Amzaleg, Remi Klotz, Min Yu. Prolonged effects of hypoxia in luminal breast cancer cells [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2024; Part 1 (Regular Abstracts); 2024 Apr 5-10; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2024;84(6_Suppl):Abstract nr 6837.
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Schlechter, Armin, and Michael Brauer. "Rezension von: Michael Brauer (Hg.): Kulturen des Buches in Spätantike, Mittelalter und Früher Neuzeit." Zeitschrift für Württembergische Landesgeschichte 78 (January 19, 2022): 485–87. http://dx.doi.org/10.53458/zwlg.v78i.1504.

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Kulturen des Buches in Spätantike, Mittelalter und Früher Neuzeit, hg. von Michael Brauer unter Mitarbeit von Birgit Karl und Claudia Maria Kraml (Interdisziplinäre Beiträge zu Mittelalter und Früher Neuzeit 8), Heidelberg: Universitätsverlag Winter 2017. 240 S. ISBN 978-3-8253-6837-1. € 40,–
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Rahmiyani, Ira, Resha Resmawati Shaleha, Revita Permata Hati, Eva Tisnawati, Rini Harningsih, and Rizki Abdurochman Assidik. "EDUKASI STUNTING DENGAN PANDUAN MAKANAN GIZI SEIMBANG MENGGUNAKAN BUKU DIGITAL DAN AUDIO VISUAL DI LKSA AMANAH KOTA TASIKMALAYA." JMM (Jurnal Masyarakat Mandiri) 8, no. 2 (April 3, 2024): 2303. http://dx.doi.org/10.31764/jmm.v8i2.22164.

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Abstrak: Stunting merupakan kondisi gagal tumbuh kembang dan masalah terkait gizi yang disebabkan oleh asupan gizi yang kurang. Penderita stunting memiliki postur tubuh lebih pendek dari standar usianya, mudah sakit, serta memiliki produktivitas yang rendah pada saat dewasa. Penerapan pencegahan stunting pada anak-anak merupakan hal penting yang harus terus digerakkan sebagai upaya penurunan nilai prevalensi stunting. Dengan demikian, diharapkan angka kejadian stunting di Indonesia dapat ditekan. Kegiatan pengabdian masyarakat ini bertujuan untuk memberikan edukasi terkait stunting dan upaya pencegahannya melalui pola makan gizi seimbang menggunakan buku digital dan audio visual. Kegiatan pengabdian ini mampu meningkatkan kesadaran masyarakat tentang pentingnya mencegah stunting dengan pemenuhan gizi seimbang dan dengan edukasi melalui buku digital serta audio visual akan mudah dipahami oleh masyarakat. Kegiatan pengabdian kepada masyarakat ini dilakukan di LKSA Amanah Tasikmalaya dengan dihadiri jumlah responden 63 orang. Media yang digunakan berupa buku digital dan audio visual terkait stunting serta gizi seimbang, dan juga pemberian kuesioner dengan jumlah pertanyaan 10 soal. Hasil penilaian menggunakan kuesioner dengan metode pre-post test menunjukan adanya peningkatan dari 68,37% menjadi 88,90%. Sehingga terdapat peningkatkan pengetahuan responden terhadap penegtahuan stunting dan pola pemilihan makanan kandungan gizi seimbang.Abstract: Stunting is a condition of failure to grow and develop and problems related to nutrition caused by insufficient nutritional intake. Stunting sufferers have a body posture that is shorter than standard for their age, get sick easily, and have low productivity as adults. Implementing stunting prevention in children is an important thing that must continue to be carried out as an effort to reduce the prevalence of stunting. In this way, it is hoped that the number of stunting incidents in Indonesia can be reduced. This community service activity aims to provide education regarding stunting and efforts to prevent it through a balanced nutritional diet using digital books and audio visuals. This service activity is able to increase public awareness about the importance of preventing stunting by providing balanced nutrition and education through digital books and audio visuals that will be easily understood by the public. This community service activity was carried out at LKSA Amanah Tasikmalaya, attended by 63 respondents. The media used were digital books and audio visuals related to stunting and balanced nutrition, as well as providing a questionnaire with a total of 10 questions. The results of the assessment using a questionnaire with the pre-post test method showed an increase from 68.37% to 88.90%. So there is an increase in respondents' knowledge regarding stunting awareness and food selection patterns with balanced nutritional content.
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Michael, Livi. "The Short Story in German in the Twenty-First Century, Lyn Marven, Andrew Plowman and Kate Roy (eds) (2020)." Short Fiction in Theory & Practice 12, no. 2 (October 1, 2022): 252–59. http://dx.doi.org/10.1386/fict_00067_5.

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Review of: The Short Story in German in the Twenty-First Century, Lyn Marven, Andrew Plowman and Kate Roy (eds) (2020) Rochester and New York: Camden House, 354 pp., ISBN 978-1-64014-046-2, h/bk, £75 The Dead Girls’ Class Trip, Selected Stories, Anna Seghers (trans. M. B. Dembo) (2021) New York: New York Review Books Classics 272 pp., ISBN 978-1-68137-535-9, p/bk, £13.99
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Л, Энхцэцэг, Төвжаргал Н, Шагжжамба Д, and Зузаан П. "Улаанбаатар хотын агаарын тоосонцрын морфологийн судалгаа." Физик сэтгүүл 25, no. 478 (February 25, 2022): 133–38. http://dx.doi.org/10.22353/physics.v25i478.216.

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Бид энэ ажлаар Улаанбаатар хотын агаарын бохирдол дахь тоосонцрын морфологи болон элементийн агуулгыг электрон микроскоп, энергиэр ялгах рентгенфлуоресценцийн аргаар судлав. Судалгааны үр дүнгээс үзэхэд янз бүрийнөсгөлттэй электрон микроскопийн зургийн тусламжтайгаар тоосонцрын ширхэгийн хэмжээний тархалт болон хэлбэр дүрсийг судалж,энергээр ялгах рентгенфлуоресценцийн арга шиглан тоосонцрын ширхэгийн элементийн агуулгыг тодорхойлж, түүний эх үүсгүүрийг нарийвчлан тогтоох боломжтой болохыг харуулав. Цаашид нарийн болон том ширхэгт тоосонцрын хувьд улирлаас хамаарсан өөрчлөлтийг нарийвчлан судлах шаардлагатай. PACS numbers: 68.37.-d, 81.10.Aj, 78.70.En
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Barbosa, Lorena da Silva, Tirza Almeida da Silva, Sônia Maria Lemos, Daniel Cerdeira de Souza, Luziane Vitoriano da Costa, Kenne Samara Andrade Martins, Rômulo Chaves Pereira de Oliveira, and Eduardo Jorge Sant’Ana Honorato. "Abuse of Psychoactive Substances by Women and Treatment Difficulties." International Journal of Advanced Engineering Research and Science 6, no. 8 (2019): 295–304. http://dx.doi.org/10.22161/ijaers.68.37.

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Kajiwara, Yasuhiro, and Masahiro Kajiwara. "Application of Stable Isotopes in Medicine and Pharmacy." RADIOISOTOPES 68, no. 2 (February 15, 2019): 37–48. http://dx.doi.org/10.3769/radioisotopes.68.37.

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Dissertations / Theses on the topic "68T37"

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Garcelon, Evrard. "Constrained Exploration in Reinforcement Learning." Electronic Thesis or Diss., Institut polytechnique de Paris, 2022. http://www.theses.fr/2022IPPAG007.

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Une application majeure de l'apprentissage machine automatisée est la personnalisation des différents contenus recommandé à différents utilisateurs. Généralement, les algorithmes étant à la base de ces systèmes sont dit supervisé. C'est-à-dire que les données utilisées lors de la phase d'apprentissage sont supposées provenir de la même distribution. Cependant, ces données sont générées par des interactions entre un utilisateur et ces mêmes algorithmes. Ainsi, les recommandations pour un utilisateur à un instant t peuvent modifier l'ensemble des recommandations pertinentes à un instant ultérieur. Il est donc nécessaire de prendre en compte ces interactions afin de produire un service de la meilleure qualité possible. Ce type d'interaction est réminiscente du problème d'apprentissage en ligne. Parmi les algorithmes dit en ligne, les algorithmes de bandits et d'apprentissage par Renforcement (AR) semblent être les mieux positionnés afin de remplacer les méthodes d'apprentissage supervisé pour des applications nécessitant un certain degré de personnalisation. Le déploiement en production d'algorithmes d'apprentissage par Renforcement présente un certain nombre de difficultés tel que garantir un certain niveau de performance lors des phases d'exploration ou encore comment garantir la confidentialité des données collectées par ces algorithmes. Dans cette thèse nous considérons différentes contraintes freinant l’utilisation d’algorithmes d’apprentissage par renforcement, en fournissant des résultats à la fois empirique et théorique sur la vitesse d’apprentissage en présence de différentes contraintes
A major application of machine learning is to provide personnalized content to different users. In general, the algorithms powering those recommandation are supervised learning algorithm. That is to say the data used to train those algorithms are assumed to be sampled from the same distribution. However, the data are generated through interactions between the users and the recommendation algorithms. Thus, recommendations for a user a time t can have an impact on the set of pertinent recommandation at a later time. Therefore, it is necessary to take those interactions into account. This setting is reminiscent of the online learning setting. Among online learning algorithms, Reinforcement Learning algorithms (RL) looks the most promising to replace supervised learning algorithms for applications requiring a certain degree of personnalization. The deployement in production of RL algorithms presents some challenges such as being able to guarantee a certain level of performance during exploration phases or how to guarantee privacy of the data collected by RL algorithms. In this thesis, we consider different constraints limiting the use of RL algorithms and provides both empirical and theoretical results on the impact of those constraints on the learning process
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Amin, Dipesh. "Computational and theoretical modelling of self-healable polymer materials." Thesis, University of Reading, 2016. http://centaur.reading.ac.uk/68437/.

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In this thesis we study self-healing polymeric materials, these are materials which can autonomously heal upon fracture (showing a partial or full recovery of mechanical strength). While there are a number of approaches to self-healing we focus on modelling supramolecular polymer networks. These are formed by physical association of linear or branched polymers via reversible and highly directional non-covalent bonds. We carry out hybrid molecular dynamics/Monte Carlo simulations of supramolecular networks formed by unentangled telechelic chains. The association of stickers leads to the formation of a transient network. At high bonding energies, the majority of stickers are fully reacted and the fraction of open stickers is less than 1%. We find the dynamical behaviour of such systems is dominated by a partner exchange mechanism in which stickers exchange their associated partners by the association and disassociation of sticker clusters. We propose a phantom chain hopping model to describe chain relaxation dynamics in supramolecular networks, which provides numerical predictions in reasonably good agreement with our simulation results. These systems are then studied under both shear and planar extensional flows. The presence of transient networks leads to a huge increase in viscosity. We find strain hardening behaviour in start-up flow for shear rates higher than the reciprocal of the average bond lifetime which we conclude results from the non-Gaussian stretching of polymer chains. An overall reduction in the number of network strands is also seen which ultimately leads to shear thinning behaviour in steady-state. We also carry out simulations of mildly entangled monodisperse polymer chains under planar extensional flow by taking advantage of the computational benefits afforded by using GPUs in scientific computing. The method developed is found to be 10 times faster than a CPU approach while providing similar accuracy. These simulations are shown alongside experiments of uniaxial extension and provide qualitatively similar behaviour (both showing extensional thickening at intermediate rates).
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Antypas, Nikoloas. "Essays on mergers and acquisitions : acquisition target prediction, CEO deal experience on deal performance, and value creation on a massive scale." Thesis, University of Reading, 2016. http://centaur.reading.ac.uk/68937/.

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This thesis examines three important issues in the financial literature strand of M&As. The first analysis regards the field of acquisition target prediction (ATP) and the construction of profitable investment strategies based on identifying prospective targets and investing in their stock. The study introduces novel predictors, which connect market conditions to individual firm targetiveness, but the prediction accuracy does not seem to materially improve when compared to the literature. However, the investment performance of predicted targets is firmly positive, resembling the performance magnitude of actual targets. In a novel construct of rolling estimation, the model seems to have low intertemporality, suggesting opportunistic performance in both prediction accuracy and importance of predicting factors. The second analysis regards the effect of CEO deal experience on deal performance. Based on manually collected data, the CEO experience at the time of the appointment in the firm seems to be insignificant for the returns around the announcement, but long-run returns form an inverse U-shaped relationship with experience, suggesting positive effects from modest experience and exponentially decreasing effects for more experienced CEOs. The significance only for long-run returns suggests that investors have yet to account for the effects of experience on deal performance. As for the relationship pattern, the shift is attributed to the different behaviour expected by CEOs with different levels of experience. Inexperienced CEOs are alert and cautious, deliberating on the appropriate course of action, while more experienced CEOs may rely on their past experience, ignoring the special circumstances of each deal and applying their intuition indiscriminately. The latter behaviour can be classified as overconfident and hubristic. The third analysis focuses on the value creation of large deals (> $500 mil) in the aftermath of the 2008 crisis. For the first time in academic literature, the general population of deals creates positive and significant wealth for acquirer shareholders. This outcome stands contrary to the status quo of the several decades leading up to the crisis, when the average deal was value-destroying for the acquirer. The improvement in returns holds for any type of deal that has been reported to lead to adverse stock performance. This market-wide shift connects to the recent financial crisis of 2008. The economic meltdown brought a stream of regulations in the U.S. market in an attempt to prevent the re-enactment of a similar crisis. The Dodd-Frank act improved several aspects of reporting and accountability for listed firms. The stunning improvement in corporate governance metrics and the ample testing for the effect of different factors suggest that superior corporate governance is the main factor for the new deal-performance standard.
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Grandi, Luca. "Studio di un'infrastruttura di supporto al controllo e alla gestione della circolazione dei treni nelle stazioni." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/6837/.

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Il sistema ferroviario ha sempre ricoperto un ruolo rilevante nel nostro Paese sia per il trasporto di persone, sia per il trasporto di merci: risulta, quindi, essenziale per il commercio e per il turismo. A differenza della strada in cui i veicoli circolano “a vista”, una ferrovia richiede che i sistemi di distanziamento dei treni siano indipendenti dalla visibilità dei veicoli, poiché gli spazi di frenatura sono solitamente molto maggiori della distanza di visibilità stessa. Per questo motivo i sistemi di segnalamento e sicurezza ricoprono un ruolo di primo piano. Nel tempo sono stati effettuati ingenti investimenti che hanno portato all'impiego di nuove tecnologie le quali hanno permesso la progettazione di sistemi safety critical contenenti componenti informatici hardware e software. La caratteristica principale di tali sistemi è la proprietà di non arrecare danno alla vita umana o all'ambiente: tale proprietà viene comunemente associata al termine anglosassone safety per distinguerla dall’accezione di "protezione da violazioni all'integrità del sistema" che il termine "sicurezza" usualmente assume. Lo sviluppo economico e tecnologico a cui abbiamo assistito nell’ultimo ventennio ha inevitabilmente reso tali sistemi ancora più sofisticati e di conseguenza complessi, richiedendo allo stesso tempo requisiti e garanzie di buon funzionamento sempre più marcati ed articolati. È proprio a questi motivi che si devono gli studi su quella che viene definita la dependability dei sistemi di computazione, verso cui si concentrano e convogliano buona parte degli sforzi e delle risorse in fase di ricerca e progettazione. Il lavoro di tesi che segue è stato svolto in collaborazione con due grandi imprese del territorio nazionale: RFI (Reti Ferroviarie Italiane) e Sirti. Inizialmente abbiamo interagito con RFI per entrare nell’ambiente ferroviario ed assimilarne il lessico e i bisogni. All’interno di RFI è stato effettuato un tirocinio nel quale ci siamo occupati del “processo off-line” riguardante la gestione in sicurezza di una stazione; tale attività deve essere effettuata da RFI prima della messa in esercizio di una nuova stazione. Per far questo abbiamo dovuto utilizzare i programmi di preparazione dei dati messi a disposizione da Sirti. In un secondo momento abbiamo approfondito l’argomentazione della safety interfacciandoci con Sirti, una delle società che forniscono sistemi safety critical computerizzati per il controllo delle stazioni. In collaborazione con essa ci siamo addentrati nel loro sistema scoprendo le loro scelte implementative e come hanno raggiunto i loro obiettivi di safety. Infine, ci siamo occupati dell'inserimento nel sistema di una nuova funzionalità, per aumentarne l’affidabilità e la sicurezza, e delle problematiche relative all'impiego del componente che la realizza.
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Tosi, Simone <1986&gt. "Sublethal effects of a common neonicotinoid pesticide, thiamethoxam, on honey bees: impact on locomotion and thermoregulation." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amsdottorato.unibo.it/6837/.

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Neonicotinoids have been pointed to as a factor responsible for the increased honey bee colony losses in the last decades. Many studies have investigated the effects of the first marketed neonicotinoid, imidacloprid, while fewer have focused on thiamethoxam. One recent study showed that sublethal doses of thiamethoxam lead to colony failure by decreasing forager homing flight success. We thus decided to investigate the mechanism which caused this phenomenon. Our hypothesis was that this effect was caused by impairment of forager locomotion abilities. Therefore we tested the effects of sublethal acute and chronic exposures to thiamethoxam on forager walking (Chapter 2) and flight (Chapter 3) performances. The acute treatment (1.34 ng/bee) affected walking locomotion firstly triggering hyperactivity (30 min post-treatment) and then impairing motor functioning (60 min post-treatment). 2-day continuous exposures to thiamethoxam (32.5, 45 ppb) elicited fewer effects on walking locomotion, however both exposure modes elicited an increased positive phototaxis. Similarly, in flight experiments, the single dose (1.34 ng/bee) elicited hyperactivity shortly after intoxication (increased flight duration and distance), while longer and continuous exposures (32.5, 45 ppb) impaired forager motor functions (decreased flight duration, distance, velocity). It is known that flight muscles temperature needs to be precisely regulated by bees during flight. Therefore, we further hypothesized that the impaired flight performances of neonicotinoid intoxicated bees were caused also by thermoregulation anomalies. We tested the effects that acute thiamethoxam exposures (0.2, 1, 2 ng/bee) elicit on forager thorax temperature (Chapter 4). Foragers treated with high doses exhibited hyperthermia or hypothermia when respectively exposed to high or low environmental temperatures. In summary, we show that sublethal doses of thiamethoxam affected forager walking and flight locomotion, phototaxis and thermoregulation. We also display the intricate mode of action of thiamethoxam which triggered, at different extents, inverse sublethal effects in relation to time and dose.
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Manzan, Sebastiano. "Essays in nonlinear economic dynamics." [Amsterdam : Amsterdam : Thela Thesis] ; Universiteit van Amsterdam [Host], 2003. http://dare.uva.nl/document/68437.

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DiGenova, Kevin (Kevin J. ). "Design of organic Rankine cycles for conversion of waste heat in a polygeneration plant." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/68937.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2011.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 124-126).
Organic Rankine cycles provide an alternative to traditional steam Rankine cycles for the conversion of low grade heat sources, where steam cycles are known to be less efficient and more expensive. This work examines organic Rankine cycles for use in a polygeneration plant that converts coal feedstock into hydrocarbon products and electricity. Since a Fischer Tropsch reactor is the largest source of low grade heat in the polygeneration plant, rejecting heat at a constant temperature of 240°C, the analysis in this work focuses on utilizing the waste heat from this process. Organic Rankine cycles (ORC's) are modeled in MATLAB using pure substance data available from Refprop 8.0. Various working fluids are considered, with a particular focus on hexane, heptane, octane, nonane, and decane. Hexane is the best option for the Fischer Tropsch heat source and the working fluids considered here. A set of ORC design concepts (building blocks) is developed to allow a cycle to be matched to a generic heat source, and is demonstrated using the Fischer Tropsch heat source profile. The low pressure steam Rankine cycle achieves a 20.6% conversion, while a baseline hexane organic Rankine cycle achieves a 26.2% conversion efficiency for the same Fischer Tropsch heat source. If the ORC building blocks are combined into a cycle targeted to match the temperature-enthalpy profile of the heat source, this customized hexane cycle achieves 28.5% conversion efficiency. For a polygeneration plant with a 25,000 ton per day input of coal, the conversion efficiency is improved by 0.3 to 0.5 points. Moreover, by combining the ORC building blocks identified in this work into new configurations, cycle designers can create customized organic Rankine cycles that target any heat source temperature-enthalpy profile to achieve improved conversion efficiencies.
by Kevin J. DiGenova.
S.M.
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Faulk, Joanna (Joanna E. ). "Composite materials in dynamic shipboard structural mounts." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/68837.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2011.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 18).
The purpose of this thesis is to investigate the viability of replacing traditional metal structural and machinery mounts with padding made of composite material. The two types of padding or isolation materials are represented by steel and CFRP (carbon fiber reinforced polymer). Machinery and instruments in ships are often mounted for two main reasons: they create unwanted vibrations and they need to be isolated from shock and external vibration. In order to analyze this problem, the machinery or instrument plus its padding are modeled as a mass-spring-damper system. The results show that CFRP generally works better for vibration isolation, while steel works better for shock isolation.
by Joanna Faulk.
S.B.
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Chen, Fred (Fred Fu-Chin). "Energy-efficient wireless sensors : fewer bits, Moore MEMS." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/68437.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2011.
Cataloged from PDF version of thesis. Page 184 blank.
Includes bibliographical references (p. 171-183).
Adoption of wireless sensor network (WSN) technology could enable improved efficiency across a variety of industries that include building management, agriculture, transportation, and health care. Most of the technical challenges of WSNs can be linked to the stringent energy constraints of each sensor node, where wireless communication and leakage energy are the doninant components of active and idle energy costs. To address these two limitations, this thesis adopts compressed sensing (CS) theory as a generic source coding framework to minimize the transmitted data and proposes the use of micro-electro-mechanical (MEM) relay technology to eliminate the idle leakage. To assess the practicality of adopting CS as a source coding framework we examine the inpact of finite resources, input noise, and wireless channel impairments on the compression and reconstruction performance of CS. We show that CS, despite being a lossy compression algorithm, can realize compression factors greater than loX with no loss in fidelity for sparse signals quantized to medium resolutions. We also model the hardware costs for implementing the CS encoder and results from a test chip designed in a 90 nm CMOS process that consumes only 1.9 [mu]W for operating frequencies below 20 kHz, verifies the models. The encoder is desioned to enable continuous, on-the-fly compression that is demonstrated on electroencephalography (EEG) and electrocardiogram (EKG) signals to show the applicability of CS. To address sub-threshold leakage, which limits the energy performance in CMOS-based sensor nodes, we develop design methodologies towards leveraging the zero leakage characteristics of MEM relays while overcoming their slower switching speeds. Projections on scaled relay circuits show the potential for greater than loX improvements in energy efficieicy over CMOS at up to 10-100 Mops for a variety of circuit sub-systems. Experimental results demonstrating functionality for several circuit building blocks validate the viability of the technology, while feedback from these results is used to refine the device design. Incorporating all of the design elements, w present simnulation results for our most recent test chip design which implements relay-based versions of the CS encoder circuits in a 0.25 jim lithographic process showing 5X improvement over our 90 nm CMOS design.
by Fred Chen.
Ph.D.
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Manning, Isaac Hall 1958. "The urban garden : Port Alliance, Texas." Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/68237.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Architecture, 1990.
Includes bibliographical references (p. 171-175).
This thesis focuses on of three urban parks; Central Park i n New York , the Fens to Franklin Park in Boston, and Rock Creek Park in washington, designed by Frederick Law Olmsted and the growth of the cities around them. Imbedded in the histories of the parks and their cities are strategies for the development of a new town on the plains of north Texas around an airport named Alliance. A regional park system organized along the creek bottoms and flood plains surrounding Alliance can be a strong organizing element for growth in the last undeveloped quadrant of the Dallas-Fort Worth area. Not unlike the area around Alliance, Olmsted's parks were in the path of urban growth , yet each of the parks has been bounded by a diverse range of built response s from the cities that now surround them. This thesis examines the evolution of the urban edge where Olmsted's parks and their cities meet. The built domain that bounds the parks is called the Urban Garden. The Urban Garden i s a metaphorical set of ideas about how the urban edge of the city and the park interact. The variations in the Urban Gardens of New York, Boston, and Washington provide vivid examples of how cities build at the edge of urban parks. These variations of the urban edge suggest some possible futures for the parks and the city that will develop around Alliance.
by Isaac Hall Manning.
M.S.
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Books on the topic "68T37"

1

Kulenbekov, Zheenbek E., and Baktyiar D. Asanov, eds. Water Resource Management in Central Asia and Afghanistan. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-68337-5.

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Okamoto, Tatsuaki, Yong Yu, Man Ho Au, and Yannan Li, eds. Provable Security. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-68637-0.

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Hamm, Ingrid, Helmut Seitz, and Martin Werding, eds. Demographic Change in Germany. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-68137-3.

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Cuellar, Jorge, Tom Maibaum, and Kaisa Sere, eds. FM 2008: Formal Methods. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-68237-0.

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Imura, Shinichi, Noriya Akamatsu, Hirohiko Azuma, Kazuhiko Sawai, and Seisuke Tanaka, eds. Hip Biomechanics. Tokyo: Springer Japan, 1993. http://dx.doi.org/10.1007/978-4-431-68237-0.

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Utsunomiya, Joji, and Henry T. Lynch, eds. Hereditary Colorectal Cancer. Tokyo: Springer Japan, 1990. http://dx.doi.org/10.1007/978-4-431-68337-7.

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Pochiraju, Bhimasankaram, and Sridhar Seshadri, eds. Essentials of Business Analytics. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-68837-4.

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Abdellaoui, Mohammed, and John D. Hey, eds. Advances in Decision Making Under Risk and Uncertainty. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-68437-4.

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Koch-Remmele, Claudia, and Roland Kreutzer. Funktionskrankheiten des Bewegungssystems nach Brügger. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-68837-2.

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Yasui, Kyuichi. Acoustic Cavitation and Bubble Dynamics. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-68237-2.

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Book chapters on the topic "68T37"

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Konishi, Nobuo. "Two-Dimensional Finite Element Analysis for Stress Distribution in Normal and Dysplastic Hips." In Hip Biomechanics, 3–10. Tokyo: Springer Japan, 1993. http://dx.doi.org/10.1007/978-4-431-68237-0_1.

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Hattori, Tomokazu, Shirou Hirose, Kazuhiko Sawai, and Shigeo Niwa. "—Overview— Clinical Gait Analysis in Hip Patients." In Hip Biomechanics, 105–14. Tokyo: Springer Japan, 1993. http://dx.doi.org/10.1007/978-4-431-68237-0_10.

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Ohtsuka, Hiromi, Kazuhiko Sawai, and Shigeo Niwa. "Simple Solid Models for Surgical Planning in Hip Arthroplasties." In Hip Biomechanics, 117–22. Tokyo: Springer Japan, 1993. http://dx.doi.org/10.1007/978-4-431-68237-0_11.

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Matsuno, Takeo, Kiyoshi Kaneda, Kaoru Shimakage, and Shigeo Matsuno. "Application of Three-Dimensional Milling System in Hip Disorders." In Hip Biomechanics, 123–28. Tokyo: Springer Japan, 1993. http://dx.doi.org/10.1007/978-4-431-68237-0_12.

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Yano, Satoru, Shinji Kimura, and Tadashi Hashimoto. "Three-Dimensional Fitting of Stem by Computer Analysis." In Hip Biomechanics, 129–37. Tokyo: Springer Japan, 1993. http://dx.doi.org/10.1007/978-4-431-68237-0_13.

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Iida, Hirokazu, Takao Yamamuro, Ryuichi Kasai, Yoshitaka Matsusue, and Yasutaka Matsuda. "Computer Simulation for the Planning of Total Hip Replacement: Improvement of the Simulation System." In Hip Biomechanics, 139–47. Tokyo: Springer Japan, 1993. http://dx.doi.org/10.1007/978-4-431-68237-0_14.

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Okumura, Hideo. "—Overview— Clinical Applications of Image Analyses in the Hip Joint." In Hip Biomechanics, 149–54. Tokyo: Springer Japan, 1993. http://dx.doi.org/10.1007/978-4-431-68237-0_15.

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Ohashi, Hirotsugu, Kenji Hirohashi, Yoshinobu Hara, Itsuo Furuya, and Akira Shimazu. "Biomechanical Analysis of the Dysplastic Hip: Pre- and Post-Pelvic and Femoral Osteotomy." In Hip Biomechanics, 157–69. Tokyo: Springer Japan, 1993. http://dx.doi.org/10.1007/978-4-431-68237-0_16.

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Shiba, Naoto, Hisashi Yamashita, Fujio Higuchi, and Akio Inoue. "Computer Simulation of Hip Osteotomies for Dysplastic Coxarthroses: Use of a Rigid Body Spring Model." In Hip Biomechanics, 171–86. Tokyo: Springer Japan, 1993. http://dx.doi.org/10.1007/978-4-431-68237-0_17.

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Ebihara, Katsuhiko, Hiroyuki Sindo, Hirohiko Azuma, and Tokuhide Doi. "Simulation of Rotational Acetabular Osteotomy: Comparison of Graphic and Organ Models." In Hip Biomechanics, 187–94. Tokyo: Springer Japan, 1993. http://dx.doi.org/10.1007/978-4-431-68237-0_18.

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Conference papers on the topic "68T37"

1

SPIE, Proceedings of. "Front Matter: Volume 6837." In Photonics Asia 2007, edited by Guoguang Mu, Feijun Song, Francis T. S. Yu, and Suganda Jutamulia. SPIE, 2007. http://dx.doi.org/10.1117/12.785148.

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"Correlations Between Rapid Chloride Test Results and On-Site Chloride Ingress." In SP-170: Fourth CANMET/ACI International Conference on Durability of Concrete. American Concrete Institute, 1997. http://dx.doi.org/10.14359/6837.

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Taslim, M. E., and A. Khanicheh. "Experimental and Numerical Study of Impingement on an Airfoil Leading-Edge With and Without Showerhead and Gill Film Holes." In ASME Turbo Expo 2005: Power for Land, Sea, and Air. ASMEDC, 2005. http://dx.doi.org/10.1115/gt2005-68037.

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This experimental investigation deals with impingement on the leading-edge of an airfoil with and without showerhead film holes and its effects on heat transfer coefficients on the airfoil nose area as well as the pressure and suction side areas. A comparison between the experimental and numerical results are also made. The tests were run for a range of flow conditions pertinent to common practice and at an elevated range of jet Reynolds numbers (8000–48000). The major conclusions of this study were: a) the presence of showerhead film holes along the leading edge enhances the internal impingement heat transfer coefficients significantly, and b) while the numerical predictions of impingement heat transfer coefficients for the no-showerhead case were in good agreement with the measured values, the case with showerhead flow was underpredicted by as much as 30% indicating a need for a more elaborate turbulence modeling.
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Co´rdoba, Oscar. "Gas Path Analysis Study for Overhaul Engines." In ASME Turbo Expo 2005: Power for Land, Sea, and Air. ASMEDC, 2005. http://dx.doi.org/10.1115/gt2005-68137.

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This paper could be considered as a sequel to current studies in overhaul steady state engine gas path diagnostic field. What is new in this work is the diagnostic system tuning based on experience gained over the years. Some heuristic rules will be presented to fit the statistical information required by the Iterated Extended Kalman Filters (IEKF) methodology. Taking into account that no engine performance models from the manufacturer are usually available in maintenance workshops, several details about gas path modeling techniques will be shown. Turbofan engine results derived from experiments carried out in a test cell will be presented. They show how the maintenance actions may be quantified and how their prediction helps the overhaul decisions with a high economical impact.
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Bhargava, R. K., C. B. Meher-Homji, M. A. Chaker, M. Bianchi, F. Melino, A. Peretto, and S. Ingistov. "Gas Turbine Fogging Technology — A State-of-the-Art Review: Part II — Overspray Fogging, Analytical and Experimental Aspects." In ASME Turbo Expo 2005: Power for Land, Sea, and Air. ASMEDC, 2005. http://dx.doi.org/10.1115/gt2005-68337.

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The strong influence of ambient temperature on the output and heat rate on a gas turbine has popularized the application of inlet fogging and overspray for power augmentation. One of the main advantages of overspray fogging is that it enhances power output as a result of decrease in compression work associated with the continuous evaporation of water within the compressor due to fog intercooling. A comprehensive review on the current understanding of the analytical and experimental aspects of overspray fogging technology as applied to gas turbines is presented in this paper.
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Thorpe, Steven J., Robert J. Miller, Shin Yoshino, Roger W. Ainsworth, and Neil W. Harvey. "The Effect of Work Processes on the Casing Heat Transfer of a Transonic Turbine." In ASME Turbo Expo 2005: Power for Land, Sea, and Air. ASMEDC, 2005. http://dx.doi.org/10.1115/gt2005-68437.

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This paper considers the effect of the rotor tip on the casing heat load of a transonic axial flow turbine. The aim of the research is to understand the dominant causes of casing heat-transfer. Experimental measurements were conducted at engine-representative Mach number, Reynolds number and stage inlet to casing wall temperature ratio. Time-resolved heat-transfer coefficient and gas recovery temperature on the casing were measured using an array of heat-transfer gauges. Time-resolved static pressure on the casing wall was measured using Kulite pressure transducers. Time-resolved numerical simulations were undertaken to aid understanding of the mechanism responsible for casing heat load. The results show that between 35% and 60% axial chord the rotor tip-leakage flow is responsible for more than 50% of casing heat transfer. The effects of both gas recovery temperature and heat transfer coefficient were investigated separately and it is shown that an increased stagnation temperature in the rotor tip gap dominates casing heat-transfer. In the tip gap the stagnation temperature is shown to rise above that found at stage inlet (combustor exit) by as much as 35% of stage total temperature drop. The rise in stagnation temperature is caused by an isentropic work input to the tip-leakage fluid by the rotor. The size of this mechanism is investigated by computationally tracking fluid path-lines through the rotor tip gap to understand the unsteady work processes that occur.
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Evans, Robin. "Factors Influencing Sulphide Scale Generation Associated with Waterflood Induced Reservoir Souring." In International Symposium on Oilfield Scale. Society of Petroleum Engineers, 2001. http://dx.doi.org/10.2118/68337-ms.

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Zhou, D., L. Jia, and J. Kamath. "An Investigation of Counter-Current Imbibition Processes in Diatomite." In SPE Western Regional Meeting. Society of Petroleum Engineers, 2001. http://dx.doi.org/10.2118/68837-ms.

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Starkey, Elizabeth M., Cailyn Spencer, Kevin Lesniak, Conrad Tucker, and Scarlett R. Miller. "Do Technological Advancements Lead to Learning Enhancements?: An Exploration in Virtual Product Dissection." In ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/detc2017-68237.

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Recent shifts into larger class sizes and online learning have caused engineering educators to rethink the way they integrate inductive, or active learning activities into their courses. One way engineering educators have done this is through the integration of new technological environments. However, little is known about how the type of technological environment utilized in active learning exercises impacts student learning and satisfaction. Thus, as a first step to understanding the impact of technological advancements on student learning and satisfaction, a study was conducted with 18 senior level undergraduate engineering students who were asked to perform product dissection, or the systematic disassembly of a product, using three technological interfaces (computer, iPad, immersive virtual reality). Variations in the complexity of the product dissected were also explored. The results of this study indicate that variations in technological interfaces did not impact student learning as assessed by a Student Learning Assessment (SLA). However, the complexity of the product dissected did impact learning, with students scoring significantly lower on the SLA when dissecting the most complex product. The results also indicated that students perceived learning and satisfaction were highest when using the immersive virtual reality system. These results suggest that the costs of investing in more technological advanced systems for product dissection may not yet outweigh the educational benefits. However, the increase in student satisfaction with VR environments has the potential to positively impact student retention in engineering programs.
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Luan, Siyao, Deborah L. Thurston, Madhav Arora, and James T. Allison. "Developing and Comparing Alternative Design Optimization Formulations for a Vibration Absorber Example." In ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/detc2017-68337.

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In some cases, the level of effort required to formulate and solve an engineering design problem as a mathematical optimization problem is significant, and the potential improved design performance may not be worth the excessive effort. In this article we address the tradeoffs associated with formulation and modeling effort. Here we define three core elements (dimensions) of design formulations: design representation, comparison metrics, and predictive model. Each formulation dimension offers opportunities for the design engineer to balance the expected quality of the solution with the level of effort and time required to reach that solution. This paper demonstrates how using guidelines can be used to help create alternative formulations for the same underlying design problem, and then how the resulting solutions can be evaluated and compared. Using a vibration absorber design example, the guidelines are enumerated, explained, and used to compose six alternative optimization formulations, featuring different objective functions, decision variables, and constraints. The six alternative optimization formulations are subsequently solved, and their scores reflecting their complexity, computational time, and solution quality are quantified and compared. The results illustrate the unavoidable tradeoffs among these three attributes. The best formulation depends on the set of tradeoffs that are best in that situation.
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Reports on the topic "68T37"

1

Эффективность педагогического сопровождения познавательной деятельности студентов Вуза. Кучумов Д.В., Ямалетдинова Г.А., December 2020. http://dx.doi.org/10.14526/2070-4798-2020-15-4-67-70.

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Способность активно обучаться на протяжении всей жизни является необходимой компетенцией специалиста, и это стало важной задачей института высшего образования в современном мире. В данной работе рассмотрена эффективность применениямодели педагогического сопровождения познавательной деятельности студентов на занятиях восточным единоборством при помощи анализа статистических данных полученных в результате эксперимента. Материалы и методы. Анализ и обобщение научной литературы, тестирование показателей физического здоровья, методы математической статистики. Результаты. Оценивая физическое состояние студенток рядом тестов до и после эксперимента, мы наблюдали статистически достоверные улучшения показателей контрольной и экспериментальной групп, но показатели экспериментальной группы стали выше, и более однородны. Темп прироста в экспериментальной группе составил диапазон от 19,06 % до 68,37 %, а в контрольной группе от 12,25 % до 58,89 %. Заключение. Проанализированы данные, подтвердившие, что применение модели педагогического сопровождения познавательной деятельности при преподавании восточных единоборств студентам нефизкультурного вуза оказало позитивное влияние на показатели состояния здоровья.
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