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Wheeler, Amanda A. "Handgrip strenth [sic] variations in baseball and softball over a six-week period of no strength training." Huntington, WV : [Marshall University Libraries], 2006. http://www.marshall.edu/etd/descript.asp?ref=699.
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Theses (M.S.)--Marshall University, 2006.Title from document title page. Includes abstract. Document formatted into pages: contains viii, 37 pages. Includes curriculum vitae. Bibliography: p. 16-18.
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Angliviel, de La Beaumelle Axel Christian Luc. "Evaluation of SHANSEP strenth-deformation properties of undisturbed Boston blue clay from automated triaxial testing." Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/34311.
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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1991.Includes bibliographical references (v. 1, leaves 250-252).
by Axel Christian Luc Angliviel de La Beaumelle.
M.S.
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Carvalho, Pedro Ivo de. "Influência da composição monomérica e da presença de sal difenil-iodônio nas propriedades mecânicas de resinas experimentais reforçadas com fibras de vidro." Universidade Federal de Goiás, 2017. http://repositorio.bc.ufg.br/tede/handle/tede/7256.
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Several researches aim to discover a best development of new glass-fiber-reinforced composite resins for the manufacture of intraradicular posts with better mechanical properties has been the aim of several researches lately. The reinforcement of composite resin with glass fibers can improve the mechanical properties, such as flexural strength, fracture resistance and compressive strength. Considering that the resin matrix monomers, the photoinitiator system and the interaction with the glass fibers interfere in the homogenization of the composite and in the degree of polymer conversion, the present work had as Objective: To evaluate the influence of different proportions of the monomers Bis-EMA / Bis-GMA / TEGDMA and photoactivator systems based on DFI and camphorquinone on the mechanical properties of a experimental fiberglass reinforced composite resin. Methodology: Ten groups were created (n = 10) using an experimental resin based on methacrylate, having as study factors: 1. Different matrices according to the proportions of monomers Bis-GMA (BG), TEGDMA (TE) and Bis-EMA (BE): And 2. The photoinitiator system: without DFI (SD) salt or DFI (CD) salt. The samples were prepared for the flexural strength (RF) and diametral tensile strength (RTD) tests. Statistical analysis showed that for RF (Mpa) there was significance in the interaction between the factors under study (p = 0.047). The highest result occurred for Group 10 (267.815 ± 45.05) c, followed by Group 9 (242.440 ± 44.83) bc; Group 8 (241.05 ± 44.83) b Group 3 (236.152 ± 26.42) abc. The lowest result occurred in Group 9 (192.450 ± 12.60) a, followed by Group 7 (202.35 ± 28.36) ab; Group 6 (207,240 ± 30,07) ab; Group 2 (209.530 ± 23.16) ab; Group 5 (216,760 ± 30,14); And Gruop 1 (218,880 ± 41,49). For RTD only the presence of DFI salt showed statistical significance (p = 0.001). The addition of the DFI salt in the composite significantly increased results for flexural strength and diametral tensile strength, while the increase of Bis-EMA was significant for better flexural strength results.
A busca pelo desenvolvimento de novos compósitos reforçados com fibra de vidro para a confecção de pinos intrarradiculares com melhores propriedades mecânicas tem sido a base de várias pesquisas atuais. O incremento fibras de vidro silanizadas nas resinas promove melhora nos valores de resistência à flexão, resistência à fratura e resistência compressiva. Tendo em vista que os monômeros da matriz resinosa, o sistema fotoiniciador e a interação com as fibras de vidro interferem na qualidade do compósito e no grau de conversão polimérica, o presente trabalho teve como objetivo avaliar as propriedades mecânicas de um compósito experimental reforçado por fibra de vidro composto por 30% de matriz orgânica, 47,5% de partícula de carga e 22,5% de vibras de vidro curta(3mm), variando proporções de monômeros Bis-EMA, Bis-GMA e TEGDMA e o efeito do sal de difenil-iodônio (DFI) em um sistema fotoiniciador à base de canforoquinona. Dez grupos foram criados (n=10) utilizando uma resina experimental a base de metacrilato, tendo como fatores em estudo: 1. Diferentes matrizes de acordo com as proporções dos monômeros Bis-GMA, TEGDMA e Bis-EMA e 2. O sistema fotoiniciador: sem sal DFI (SD) ou com sal DFI (CD). As amostras foram preparadas para os testes resistência flexural (RF) e resistência à tração diametral (RTD). Análise estatística mostrou que para RF (Mpa) houve significância na interação entre os fatores em estudo (p=0,047). Os melhores resultados foram encontrados para os grupos: Grupo 10 (267,815±45,05)c, seguido por Grupo 9 (242,440±44,83)bc. Para RTD somente a presença do sal DFI demonstrou significância estatística (p=0,001). Em MPa foram observados os maiores resultados: Grupo 10, (35,36±2,61b); Grupo 8, (35,07±6,89b). A adição do sal DFI no compósito aumentou significativamente resultados para resistência flexural e resistência à tração diametral, enquanto que a presença de Bis-EMA foi significante para melhores resultados somente em resistência flexural.
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Jemni, Monem, William A. Sands, Françoise Friemel, Michael H. Stone, and Carlton B. Cooke. "Any Effect of Gymnastics Training on Upper-Body and Lower-Body Aerobic and Power Components in National and International Male Gymnast?" Digital Commons @ East Tennessee State University, 2006. https://dc.etsu.edu/etsu-works/4610.
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Aerobic and anaerobic performance of the upper body (UB) and lower body (LB) were assessed by arm cranking and treadmill tests respectively in a comparison of national (N) and international (I) male gymnasts. Force velocity and Wingate tests were performed using cycle ergometers for both arms and legs. In spite of a significant difference in training volume (4–12 vs. 27–34 h·wk−1 for N and I, respectively), there was no significant difference between N and I in aerobic and anaerobic performance. Upper body and LB maximal oxygen uptake (JOURNAL/jscr/04.02/00124278-200611000-00029/ENTITY_OV0312/v/2017-07-20T235327Z/r/image-pngO2max) values were 34.44 ± 4.62 and 48.64 ± 4.63 ml·kg−1·min−1 vs. 33.39 ± 4.77 and 49.49 ± 5.47 ml·kg−1·min−1, respectively, for N and I. Both N and I had a high lactic threshold (LT), at 76 and 82% of JOURNAL/jscr/04.02/00124278-200611000-00029/ENTITY_OV0312/v/2017-07-20T235327Z/r/image-pngO2max, respectively. Values for UB and LB force velocity (9.75 ± 1.12 and 15.07 ± 4.25 vs. 10.63 ± 0.95 and 15.87 ± 1.25 W·kg−1) and Wingate power output (10.43 ± 0.74 and 10.98 ± 3.06 vs. 9.58 ± 0.60 and 13.46 ± 1.34 W·kg−1) were also consistent for N and I. These findings confirm the consistency of JOURNAL/jscr/04.02/00124278-200611000-00029/ENTITY_OV0312/v/2017-07-20T235327Z/r/image-pngO2max values presented for gymnasts in the last 4 decades, together with an increase in peak power values. Consistent values for aerobic and anaerobic performance suggest that the significant difference in training volume is related to other aspects of perfomance that distinguish N from I gymnasts. Modern gymnastics training at N and I levels is characterized by a focus on relative strength and peak power. In the present study, the high LT is a reflection of the importance of strength training, which is consistent with research for sports such as wrestling.
Aerobic and anaerobic performance of the upper body (UB) and lower body (LB) were assessed by arm cranking and treadmill tests respectively in a comparison of national (N) and international (I) male gymnasts. Force velocity and Wingate tests were performed using cycle ergometers for both arms and legs. In spite of a significant difference in training volume (4–12 vs. 27–34 h·wk−1 for N and I, respectively), there was no significant difference between N and I in aerobic and anaerobic performance. Upper body and LB maximal oxygen uptake (JOURNAL/jscr/04.02/00124278-200611000-00029/ENTITY_OV0312/v/2017-07-20T235327Z/r/image-pngO2max) values were 34.44 ± 4.62 and 48.64 ± 4.63 ml·kg−1·min−1 vs. 33.39 ± 4.77 and 49.49 ± 5.47 ml·kg−1·min−1, respectively, for N and I. Both N and I had a high lactic threshold (LT), at 76 and 82% of JOURNAL/jscr/04.02/00124278-200611000-00029/ENTITY_OV0312/v/2017-07-20T235327Z/r/image-pngO2max, respectively. Values for UB and LB force velocity (9.75 ± 1.12 and 15.07 ± 4.25 vs. 10.63 ± 0.95 and 15.87 ± 1.25 W·kg−1) and Wingate power output (10.43 ± 0.74 and 10.98 ± 3.06 vs. 9.58 ± 0.60 and 13.46 ± 1.34 W·kg−1) were also consistent for N and I. These findings confirm the consistency of JOURNAL/jscr/04.02/00124278-200611000-00029/ENTITY_OV0312/v/2017-07-20T235327Z/r/image-pngO2max values presented for gymnasts in the last 4 decades, together with an increase in peak power values. Consistent values for aerobic and anaerobic performance suggest that the significant difference in training volume is related to other aspects of perfomance that distinguish N from I gymnasts. Modern gymnastics training at N and I levels is characterized by a focus on relative strength and peak power. In the present study, the high LT is a reflection of the importance of strength training, which is consistent with research for sports such as wrestling.
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Hallgrimsson, Boas, and Mollee Bekele. "The Strengths of Street Knowledge." Thesis, Uppsala universitet, Företagsekonomiska institutionen, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-388954.
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In the late 1970s the culture of hip hop emerged from the streets of New York. It was an outlet for identity, expression and boasting among communities of young people who were raised in disadvantaged circumstances. Hip hop allowed for creative innovators to form a niche within the entertainment industry that has generated billions of dollars. The purpose of our study is to investigate how hip hop artists utilize entrepreneurial methods in their ventures. Specifically, we explore how these entrepreneurs build empires from storytelling and narrative creation. Entrepreneurial research has found storytelling as an increasingly validated method towards success. Much has been written about how entrepreneurs frame their ideas, how they have to be raconteurial in the early stages of their ventures in order to access resources, and how a “great” pitch is invaluable in capital raising. Hip hop artists rely on stories and storytelling, and the listeners response to the pitch dictates its value. The primary methods used in our study were theoretical and text analysis. We relied on content analysis, discourse analysis and critical discourse studies to analyze our data. We compared literature from various research disciplines including cultural studies, business studies, entrepreneurial research, post structuralism and philosophy. Our results indicate that hip hop artists negotiate experiences and create narratives that are then commodified. Our conclusions indicate that narratives that provide consumers a glimpse into communities of “others” while keeping listeners at a safe distance, sell. Furthermore, we find that rappers who exploit vulgarity and glamorize violence, misogyny and aggression are time and again rewarded with fame and fiscal success.
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Kureckas, Tadas. "Elektromagnetinio žingsninio variklio tyrimas." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2005. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2005~D_20050620_161707-93753.
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Analysis of electromagnetic stepper motor at work have been performed. Types of stepper motors and its characteristics have been described generally. The programmes of modelling have been searching using internet and analysed. The programme QuickField 5.2 Studen‘s edition is in consort to demands and requests. Using QuickField 5.2 Student‘s edition the model of electromagnetic motor have been created and experimentations have been performed. Varying displacement of motor magnetic part the distribution of magnetic flux density and magnetic field lines have been analysed. The experimentations involving change of motors mechanical characteristics too (varying air gap between magnetic circuit and secondary part). Teoretical characteristics of distribution of magnetic field energy density, strenth and magnetic flux have been maked and compared. The conclusions and theoretical results specifying operating principle facility of electromagnetic motor. Characteristics of distribution of magnetic field and energy can be used for rating of influence to operation of motor.
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Leckie, Andrew Francis. "Environmental Capacity of Local Streets with Street Treatments." Thesis, University of Canterbury. Civil and Natural Resource Engineering, 2012. http://hdl.handle.net/10092/7653.
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“I want my street to be like an extension to my driveway, where the kids can play safely and where the traffic does not bother us,” said one resident. Another said that she “likes traffic... We live in a city.” This gives an idea of the broad range of opinions and views that exist on traffic.
Traffic in local streets in a concern for residential amenity. There is always conflict between the residential amenity and traffic access functions of local streets. There is much debate on what a true local road is. The concept of environmental capacity was developed to identify a suitable maximum traffic volume on local streets, without overly adversely affecting residents. It was first introduced by Buchanan and Appleyard in separate research in the 1960s. Both men settled on thresholds of 2,000-3,000 vehicles per day. Chesterman, in 2009, carried out a study in Christchurch, surveying residents on four local streets with varying traffic volumes. He found residents living on busier streets felt that their streets were busier, noisier and less safe. There was also an increasing trend for these residents to have their houses turned away from the street and they tended to have less personal involvement with their neighbours. He found that perhaps a more suitable environmental capacity estimate was between 1,500 and 2,000 vehicles per day.
This study looked at further Christchurch streets, this time with street treatments, such as street calming and tree plantings, aiming to find an environmental capacity for these streets as well as seeing whether the street treatments affected the perceived environmental capacity. As well as reinforcing most of the conclusions found by Chesterman, a higher environmental capacity of around 2,000 vehicles per day was found for the surveyed streets. This suggests that indeed, street treatments such as those used in the surveyed streets can increase the environmental capacity, which has implications for local councils who want to maintain road traffic carrying capabilities without having unsatisfied residents.
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Desai, Maitri. "Reforming Complete Streets: considering the street as place." University of Cincinnati / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1428070222.
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Trigueros, Angelique Francesca. "Using Parent-Identified Strengths of Autistic Children to Advance Strength-Based Intervention." ScholarWorks, 2018. https://scholarworks.waldenu.edu/dissertations/5803.
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Questions remain about the range of abilities autistic children possess and what constitutes effective treatment. Strength-based intervention contrasts with traditional autistic intervention approaches that focus on children's deficits. Studies on strength-based intervention approaches have not revealed how children's strengths are identified and have not used the insights of parents for this purpose. Neurodiversity serves as the conceptual framework because the tenets of neurodiversity align with those of strength-based approaches and hold that autism is a variation of the human condition rather than a disability. The purpose of this qualitative interpretive phenomenological study was to explore how the parent-identified strengths of autistic children may act as the basis for the advancement of strength-based intervention. The research questions focused on identifying the strengths of autistic children through semistructured interviews with 15 parents of high-functioning autistic children, who were recruited using purposive sampling. Data were analyzed using a three-level method, and six themes emerged: Routine, Caring for Others, Relationship with Parent, Intervention in School, Therapy, and Outlook for the Future. Practical implications for community psychology include development of strength-based approaches based on altruism, parent-child relationships, and positive outlooks for the future. Further research is recommended on caring for others and displaying affection in relation to strength-related constructs, such as resiliency and growth. Effective strength-based interventions may help autistic children develop based on their strengths, leading to positive social change.
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Biel, Andrea P. "Teaching to Strengths: Evaluation of a Character Strength Curriculum and Disciplinary Outcomes." Xavier University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=xavier1564788317136618.
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Cowan, G. "Occupying streets : street design in station areas, London and Frankfurt." Thesis, University of Westminster, 2015. https://westminsterresearch.westminster.ac.uk/item/99746/occupying-streets-street-design-in-station-areas-london-and-frankfurt.
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Steinemann, Jeremy R. "Successful streets : performance measures, community engagement, and urban street design." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/73834.
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Thesis (M.C.P.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, 2012.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 171-181).
Over the past decade, local transportation agencies have increasingly re-designed urban arterials, their cities' major surface streets, to better accommodate a wide range of users. At the same time, a growing number of agencies are using performance measurement, the tracking and reporting of specific transportation-related variables, to evaluate and document their impacts. This report attempts to understand the role that performance measurement plays in design decision-making for urban arterial streets. First, the report examines how the selection and prioritization of performance measures shape urban arterial forms. While agencies in the mid-20th Century prioritized automobile performance in arterial design, present-day agencies attempt to balance performance across a broader range of street users and performance goals. Second, the report explores how local agencies can use performance-based planning for urban arterial projects at the same time as they engage in community-focused design processes. Research in transportation policy defines performance-based planning as a framework for agencies to use performance goals and measurement to guide decision-making. Existing research largely neglects the use of performance-based planning for project-level decisions and local transportation agencies. Since performance measurement systems hold agencies accountable to well-defined goals, performance-based planning may have value for both stakeholders and local officals in urban arterial design processes. To understand the potential role of performance-based planning for project-level design, this report examines four cases of urban arterial design: two in New York City (Prospect Park West in Brooklyn and 34th Street in Manhattan), and two in Portland, OR (North Williams Avenue and East Burnside). The cases were chosen because, in each, local officials faced community conflict about design and employed some form of performance measurement. The case study analysis finds that agencies can use performance-based planning to both guide design decisions and to actively engage community stakeholders. Among the cases considered, most employed only some features of performance-based planning, primarily to evaluate impacts and to make modifications to preliminary designs. One case, North Williams in Portland, was unique, however, in using a complete form of performance-based planning as a tool to increase participation by community stakeholders in the design process. Building upon the lessons from North Williams and the other cases, this report recommends a new framework for performance-based planning that attempts to empower stakeholders to participate in design decision-making, but recognizes that performance-based planning alone cannot resolve community conflicts.
by Jeremy R. Steinemann.
M.C.P.
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Wong, On-wa. "Urban foci in Shamshuipo : revitalization of Nam Cheong street /." Hong Kong : University of Hong Kong, 1998. http://sunzi.lib.hku.hk/hkuto/record.jsp?B25956541.
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Brännvall, Elisabet. "Aspects on Strenght Delivery and Higher Utilisation of the Strength Potential of Kraft Pulp Fibres." Doctoral thesis, KTH, Träkemi och massateknologi, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4373.
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Studies on strength delivery and related fields have so far concentrated on finding the locations in the mill where fibres are damaged and what the damages consist of. However, fibres will invariably encounter mechanical stresses along the fibreline and in this thesis a new concept is introduced; the vulnerability of fibres to mechanical treatment. It is hypothesised that fibres with different properties have different abilities to withstand the mechanical forces they endure as they are discharged from the digester and transported through valves, pumps and various washing and bleaching equipment. In the thesis, results are presented from trials where pulps with significantly different hemicellulose compositions were high-intensity mixed at pH 13, 70°C and 10% pulp consistency and pulp strength evaluated. By varying alkalinity and temperature, pulps with different carbohydrate composition could be obtained. High alkali concentration and low temperature resulted in high glucomannan content and low xylan content, whereas cooking at low alkali concentration and high temperature rendered a pulp with low glucomannan and high xylan content. The high alkalinity pulp was stronger, determined as tear index at given tensile index. The pulp viscosity was also higher for this pulp. However, when the pulps were subjected to high-intensity mixing, the high alkalinity pulp lost in tear strength and the re-wetted zero-span tensile strength was substantially reduced. The pulp cooked at high alkalinity was thus interpreted as being more vulnerable to mechanical treatment than the pulp obtained by cooking at low alkalinity. Another pair of pulps was manufactured at high and low sodium ion concentrations, but otherwise with similar chemical charges. The pulp obtained by cooking at low sodium ion concentration became stronger, evaluated as tear index at a given tensile index and the curl index was substantially lower, 8% compared to 12% for the pulp cooked at a high sodium ion concentration. The viscosity was 170 ml/g higher for the pulp manufactured at low sodium ion concentration. When the pulps were subjected to high-intensity mixing, the tear strength of the pulp manufactured at high sodium ion concentration was reduced. The re-wetted zero-span tensile index decreased also after mixing. The pulp obtained by cooking at higher sodium ion concentration was thus interpreted as being more vulnerable to mechanical treatment than the pulp manufactured at lower sodium ion concentration. In the thesis, two reasons for the low strength delivery of industrially produced pulps compared to laboratory-cooked pulps are put forward. Since the ionic strength of mill cooking liquor systems is much higher than is normally used in laboratory cooking, this can partly explain the difference in strength between mill- and laboratory-cooked pulp. A higher sodium ion concentration was shown in this thesis work to give a pulp of lower strength. Secondly, it is suggested that the difference in retention time of the black liquor in laboratory cooking and continuous mill cooking systems can explain the difference in tensile strength between laboratory-cooked and mill-produced pulp. The black liquor in a continuous digester has a longer retention time in the digester than the chips. This gives a longer time for the dissolved xylan to degrade and, as a consequence, the xylan deposited on the mill pulp fibres will be more degraded than the xylan deposited on the laboratory-cooked pulp fibres. In the thesis, results are also presented from studies using different strength-enhancing chemicals. The fibre surfaces of bleached never-dried and once-dried pulp were modified by the polyelectrolyte multilayer technique using cationic and anionic starch. Although the pulps absorbed the same amount of starch, the never-dried pulp reached a higher tensile index than the once-dried pulp. When the starch-treated never-dried pulp was dried and reslushed it still had higher tensile index than the never-dried untreated pulp. The starch layers were thus able to counteract part of the hornification effect. The never-dried starch treated pulps were subsequently dried, reslushed and beaten. Pulp with starch layers had a better beatability evaluated as the tensile index obtained after given number of PFI revolutions than dried untreated pulp. Hence, there is a potential to increase the tensile index of market pulp by utilising the polyelectrolyte multilayer technique before drying. Addition of CMC to bleached mill pulp and laboratory-cooked pulp increased the tensile strength to the same degree for both pulps. CMC addition had a straightening effect on the fibres, the shape factor increased and this increased the zero-span tensile strength also.QC 20100519
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Patterson, Mason Foushee. "Standardization of Street Sampling Units to Improve Street Tree Population Estimates Derived by I-Tree Streets Inventory Software." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/42687.
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Street trees are a subpopulation of the urban forest resource and exist in the rights-of-way adjacent to public roads in a municipality. Benefit-cost analyses have shown that the annual benefits provided by the average street tree far outweigh the costs of planting and maintenance. City and municipal foresters spend a majority of their time and resources managing street tree populations. Sample street tree inventories are a common method of estimating municipal street tree populations for the purposes of making urban forest policy, planning, and management decisions.
i-Tree Streets is a suite of software tools capable of producing estimates of street tree abundance and value from a sample of street trees taken along randomly selected sections (segments) of public streets. During sample street tree inventories conducted by Virginia Tech Urban Forestry, it was observed that the lengths of the sample streets recommended by i-Tree varied greatly within most municipalities leading to concern about the impact of street length variation on sampling precision.
This project was conducted to improve i-Tree Streets by changing the recommended sampling protocol without altering the software. Complete street tree censuses were obtained from 7 localities and standardized using GIS. The effects of standardizing street
segments to 3 different lengths prior to sampling on the accuracy and precision of i-Tree Streets estimates were investigated though computer simulations and analysis of changes in variation in number of trees per street segment as a basis for recommending procedural changes.
It was found that standardizing street segments significantly improved the precision of i-Tree Streets estimates. Based on the results of this investigation, it is generally recommended that street segments be standardized to 91m (300 ft) prior to conducting a sample inventory. Standardizing to 91m will significantly reduce the number of trees, the number of street segments, and the percentage of total street segments that must be sampled to achieve an estimate with a 10% relative standard error.
The effectiveness of standardization and the associated processing time can be computed from municipal attributes before standardization so practitioners can gauge the marginal gains in field time versus costs in processing time. Automating standardization procedures or conducting an optimization study of segment length would continue to increase the efficiency and marginal gains associated with street segment standardization.Master of Science
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Xue, Bing, and 薛冰. "Symbiotic street: stray cattle andcittizens [i. e. citizens] on streets of Ahmedabad." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hub.hku.hk/bib/B5070803X.
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Chittajallu, Dilip R. ""How good is the street?" a characteristic-based evaluation of Vine, Walnut, and Main streets, Cincinnati, Ohio /." [Cincinnati, Ohio] : University of Cincinnati, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=ucin1093027197.
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Hatcher, Alexandra M. "From the Internet to the streets| Occupy Wall Street, the Internet, and activism." Thesis, Northern Arizona University, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=1537772.
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In September of 2011 protestors filled the streets of New York City’s Wall Street Financial District as part of the social movement known as Occupy Wall Street. Prior to their protests in the streets, Occupy Wall Street was a movement that originated and spread online through various social media such as Facebook, YouTube, Twitter, and interactive webpages. The strategy of using Internet communication as a tool for activism is not new. Social movements since the 1990s have utilized the Internet.
The growing use of Web 2.0 technologies in our everyday lives is a topic that is not yet fully understood or researched by anthropologists, nor is its potential for ethnographic research fully realized. This thesis addresses both of these points by presenting a case study of how, as anthropologists, we can collect data from both the online and in-person presences of a group.
This thesis focuses on the social movement, Occupy Wall Street, because of its beginnings and continuing activity online. In-person data of the Occupy Wall Street movement were collected at Occupy movements in Flint, Michigan and New York City, New York using traditional ethnographic methods such as interviews and participant observation. Online data were collected using computer scripts (programs that automate computer tasks), that recursively downloaded websites onto my personal, locally owned hard drive. Once the online data was collected, I also used computer scripts to filter through data and locate phenomena on the websites that I had chosen to focus. By analyzing both online and in-person data I am able to gain a more holistic view and new ways of understanding social movements.
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Lian, Erwin. "DESIGN INVASION FROM THE STREETS: A STUDY OF STREET ART’S APPLICATION IN DESIGN." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1250138042.
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Johnson, Eric P. "Composite strength statistics from fiber strength statistics." Thesis, Monterey, California. Naval Postgraduate School, 1991. http://hdl.handle.net/10945/26420.
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Utilization of composites in critical design applications requires an extensive engineering experience data base which is generally lacking, especially for rapidly developing constituent fibers. As a supplement, an accurate reliability theory can be applied in design. This investigation is a part of a research effort to develop a probabilistic model of composite reliability capable of using data produced in small laboratory test samples to predict the behavior of large structures with respect to their actual dimensions. This work included testing of composite strength which was then used in exploring the methodology of predicting composite reliability from the parent single filament fiber strength statistics. This required testing of a coordinate set of test samples which consisted of a composite and its parent fibers. Previously collected fiber strength statistics from two different production spools were used in conjunction with the current effort. This investigation established that, for a well made composite, the Local Load Sharing Model of reliability prediction exhibited outstanding correlation with experimental data and was sufficiently sensitive to predict deficient composite strength due to a specific fiber spool with an abnormally weak lower tail. In addition, it provided an upper bound on the composite reliability. This investigation is unique in that is used a coordinate set of data with an unambiguous genesis of parent fiber and subsequent composite. The findings of this investigation are also definitive in that six orders of extrapolation of size in reliability prediction has been verified
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Mahlangu, Nompumelelo Innocentia. "Factors that contribute to street children leaving rehabilitation centres and returning to the streets /." Pretoria : [s.n.], 2003. http://upetd.up.ac.za/thesis/available/etd-06172005-154603/.
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Mahlangu, Nompumelelo Innocentia. "Factors that contribute to street children leaving rehabilitation centres and returning to the streets." Diss., University of Pretoria, 2002. http://hdl.handle.net/2263/25588.
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Much of prevailing research on street children pertains to their experiences at home prior to their abode on the streets, as well as their ordeal on the streets once they have departed from their homes. Only a few studies highlight their experiences in rehabilitation centres. Hence no study was undertaken to explore factors that contribute to their departure from rehabilitation centres and return to the streets. The aim of the study was to determine why do some of the street children who were formerly placed in the rehabilitation centres return to the streets. Thus the objectives of the study were to (a) determine the norms and values that are applicable in the centres and (b) determine whether their tendency of returning to the streets results from their negative perception of certain factors in the centres, as well as their desire to resume the life that they adopted on the street prior to their placement in the centres. The sample comprised of sixteen street children who have previously resided in the centres. Focus group interviews were adopted as data collection techniques, and the children were subjected to four focus group interviews. A semi-structured interview was also conducted to one of the caregivers in the centre. A Grounded Theory Approach, which is an integration of the methods proposed by Strauss and Corbin (1990), Glaser (1992), Creswell (1998) and Strauss and Corbin (1998), was utilised for the analysis of the interviews. The findings evinced that the children's departure from the centres and return to the streets culminated from their familiarity with street life, desire to return home, discontentment with some of the living conditions in the centres, ill-treatment by the police and older boys, as well as their desire to resume street life, that is, to partake in income-generation activities and to be reunited with other children who reside on the streets. Much of their interaction with the caregivers also contributed to their retreat from the centres. The caregivers subjected them to discrimination, ill-treatment, false accusations, humiliation, restriction and threatened to transfer them to another centre. In addition to the above- mentioned factors, there were unanticipated findings that also emerged during the study. The findings were clustered as follows: factors that influenced the children to leave the centre and return home, factors that influenced the children to leave their homes and reside on the streets, factors that influenced the children to leave the streets and reside in the centre and factors that influenced the children to leave their homes and return to the streets. Therefore, the children's negative perception of the conditions that they were subjected to in the centres contributed to their return to the streets, as they related well with other street children and were able to earn an income on the streets.Dissertation (MA (Psychology))--University of Pretoria, 2002.
Psychology
unrestricted
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Gorrell, Casey. "Narrowing the gap: correlating street width and pedestrian safety to justify narrowing urban streets." Kansas State University, 2014. http://hdl.handle.net/2097/17554.
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Master of Landscape ArchitectureDepartment of Landscape Architecture and Regional & Community Planning
Katie Kingery-Page
Many cities in the United States have developed into auto-dominated places with decreased accessibility for pedestrians and bleak cityscapes of wide, barrier-like streets. While many studies exist on the correlation between street width and vehicular safety, and vehicular speed and pedestrian safety, little information is available on the correlation between street width and pedestrian safety. This project began while the researcher interned with the New York City Department of Transportation (NYCDOT) Pedestrian Projects Group (PPG). The researcher was asked to begin a study of New York City (NYC) streets, specifically analyzing the relationship between street width and pedestrian safety using NYC safety data. The street types studied represent a variety of conditions found in many cities. The exploratory correlation study, completed after returning to Kansas State University, found that narrow streets trend towards higher safety. The correlation study between street width and pedestrian safety provides justification to narrow Bluemont Avenue in Manhattan, Kansas and increase pedestrian safety. Bluemont Avenue is a primary vehicular connection between the east and west sides of Manhattan. The city’s future construction plans propose widening the street to accommodate a center turning lane along the entire length of Bluemont Avenue. The research presented in this report supports the hypothesis that narrower streets are safer for pedestrians. By utilizing the results of the study, a designer can strengthen their argument to narrow wide, auto-dominated streets. In addition, the use of a two-stage design process can create a safer environment for pedestrians on Bluemont Avenue. By utilizing a temporary design followed by a permanent installation, the City of Manhattan can decrease the priority of Bluemont Avenue within the vehicle hierarchy and increase pedestrian safety. The intent of this report is to begin a conversation with the City of Manhattan to begin looking at streets not as mere vehicular paths, but paths for all modes of transit.
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Kinser, Ann M., Michael W. Ramsey, Harold S. O'Bryant, C. Ayres, William A. Sands, T. Wolfe, J. Calloway, J. Whittington, and Michael H. Stone. "Preliminary Report: The Effects of Simultaneous Stretch and Vibration on Flexibility and a Measure of Explosive Strength (Vertical Jumps)." Digital Commons @ East Tennessee State University, 2006. https://dc.etsu.edu/etsu-works/4143.
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Amador, Lui. "Strength within| Addressing Structural Opportunity Gaps for Men of Color at 4-Year Universities through a Strengths-Based Approach." Thesis, California State University, Long Beach, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10825323.
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The enrollment, retention, and graduation rates for African American, Latino, Native American, and segments of Asian and Pacific Islander men in higher education are disproportionately lower than women from all racial groups and White men. A significant body of research substantiates the concern by institutions on the opportunity gap for men of color in higher education. Despite the research and concerted efforts by institutions, this opportunity gap continues to affect the educational and overall college experience of men of color. Through qualitative interviews employing a photo elicitation protocol and a conceptual framework based on validation theory, Critical Race Theory (CRT) and Anti-Deficit Perspectives, this study examines the social, cultural, and institutional factors that shape this population’s experience in higher education. This research will examine the strengths and assets that men of color identify as supporting their success in college. This study will also examine how institutional resources and practices informed by an anti-deficit framework can effectively improve the experiences of men of color in school.
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Lee, Chi-wai Corina, and 李智慧. "Conserving historic streets in Hong Kong: a feasibility study using the case of Ladder Street." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hub.hku.hk/bib/B50716098.
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Hong Kong has carried out heritage conservation since the late 1970s based on the Antiquities & Monuments Ordinance of 1976, but protecting individual buildings has been the main focus. This is a fragmented way to conserving tangible heritage and is neither to the best interest of the building nor to the visitor experience.
Designating a street as historical is common in countries such Britain, Canada and the United States. However, they normally conserve the area as a whole rather than a single street. For example, Cleveland Street in London, England, is listed but it is treated as an “Conservation Area” rather than a “conservation street”. As designating streets as heritage is not new to these countries. It is, however, a quite new concept to Hong Kong. 2009 marked the first time in Hong King’s history that streets were listed as Grade I built heritage, namely Pottinger Street and Ladder Street. Both are in the Central district. Is it a good way to conserving a street by just designating it as a heritage, but segregating it from its context? What other support measures are required to have it be really conserved?
This dissertation focuses on whether it works as conservation by designating a street as a built heritage without including its context. The scope covers one case-study street, Ladder Street in Sheung Wan, and tracks the changes of the area after its Grade I listing in December 2009. Ladder Street is one of the earliest streets constructed in Hong Kong. It is not only a “built heritage” in itself, it also cuts across several streets featuring other “built heritage,” such as Man Mo Temple, YMCA and the Hong Kong Museum of Medical Sciences building. This study will attempt to evaluate if it is appropriate to designate a street.
The main objective of this research is to review the Hong Kong experience in conserving built heritage, the designation procedure in Hong Kong, the reasons of designating Ladder Street, the impact on the streetscape and its implications in Hong Kong. Overseas example will be examined and their applicability in the Hong Kong context will be discussed. Ultimately, possible areas for further investigation will be identified.published_or_final_version
Conservation
Master
Master of Science in Conservation
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Man, Pui Yee. "The spatiality of governing public streets : a case of Sai Yeung Choi street pedestrian scheme." HKBU Institutional Repository, 2009. http://repository.hkbu.edu.hk/etd_ra/1079.
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Haff, G. Gregory, R. Ruben, M. Molanari, Keith B. Painter, Michael W. Ramsey, Margaret E. Stone, and Michael H. Stone. "The Relationship between the Eccentric Utilization Ratio, Reactive Strength and Pre-Stretch Augmentation and Selected Dynamic and Isometric Muscle Actions." Digital Commons @ East Tennessee State University, 2009. https://dc.etsu.edu/etsu-works/4522.
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Kamp, Nicolas. "Toughness-strength relationships in high strength 7xxx aluminium alloys." Thesis, University of Southampton, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.288151.
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Stone, Michael H., Meg E. Stone, William A. Sands, Kyle C. Pierce, Robert U. Newton, G. Gregory Haff, and Jon Carlock. "Maximum Strength and Strength Training---A Relationship to Endurance?" Digital Commons @ East Tennessee State University, 2006. https://dc.etsu.edu/etsu-works/4615.
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Endurance can be defined as the ability to maintain or to repeat a given force or power output. The sport performance-endurance relationship is a multi-factorial concept. However, evidence indicates that maximum strength is a major component. Conceptually, endurance is a continuum. The literature indicates that (a) maximum strength is moderately to strongly related to endurance capabilities and associated factors, a relationship that is likely stronger for high intensity exercise endurance (HIEE) activities than for low intensity exercise endurance (LIEE); (b) strength training can increase both HIEE and LIEE, the effect being greater for HIEE; (c) the volume of strength training plays a role in endurance adaptation; and (d) mechanical specificity and training program variables also play a role in the degree of adaptation..
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Senn, Daniel LeRoy. "Short-term Training Effects of Dynamic Warm Up Volume on Speed, Power, and Agility." Thesis, North Dakota State University, 2011. https://hdl.handle.net/10365/29320.
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This study examined the short-term training effects of two volumes of a dynamic warm up
performed 4 days per week over a 3 1/2-week period. A total of 25 Division III wrestlers
volunteered for the study. Three participants either dropped out or were unable to attend
post-testing, resulting in 22 total participants completing the study. Groups were divided
into control, low volume, and high volume groups. All participants completed pre and poststudy
performance tests including the standing long jump, proagility, start-stop-cut, and 30-
meter sprint. The low and high volume training groups each performed the same dynamic
warm up prior to each pre-season captain's practice. The control group did not participate
in an organized warm up. The low volume group performed one set of each warm up
exercise, and the high volume group performing two sets of each warm up exercise. Data
analysis indicated significant increases in performance for the standing long jump (p =
.011) and start-stop-cut (p = .000) measures among the entire sample population. However,
there was no significant difference between the groups in these measures. No significant
results were found either for the sample as a whole or between groups for the proagility and
30-meter measures. The increased performance of all groups, including the control group,
fails to provide evidence for the effectiveness of training with either warm up volume.
Further research is needed to address limitations of this study to determine effectiveness of
various warm up volumes.
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Baltodano-Goulding, Rafael. "Tensile strength, shear strength, and effective stress for unsaturated sand." Diss., Columbia, Mo. : University of Missouri-Columbia, 2006. http://hdl.handle.net/10355/4364.
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Thesis (Ph.D.)--University of Missouri-Columbia, 2006.The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (February) Vita. Includes bibliographical references.
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Zaina, Mazen Said Civil & Environmental Engineering Faculty of Engineering UNSW. "Strength and ductility of fibre reinforced high strength concrete columns." Awarded by:University of New South Wales. School of Civil and Environmental Engineering, 2005. http://handle.unsw.edu.au/1959.4/22054.
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The main structural objectives in column design are strength and ductility. For higher strength concretes these design objectives are offset by generally poor concrete ductility and early spalling of the concrete cover. When fibres are added to the concrete the post peak characteristics are enhanced, both in tension and in compression. Most of the available experimental data, on fibre reinforced concrete and fibre reinforced high strength concrete columns, suggest that an improvement in both ductility and load carrying capacity due to the inclusion of the fibres. In this thesis the ductility and strength of fibre reinforced high strength concrete are investigated to evaluate the effect of the different parameters on the performance of columns. The investigation includes both experimental and the numerical approaches with 56 high strength fibre reinforced concrete columns being tested. The concrete strength ranged between 80 and 100 MPa and the columns were reinforced with 1, 2 or 2.6 percent, by weight, of end hooked steel fibres. The effect of corrugated Polypropylene fibres on the column performance was also examined. No early spalling of the cover was observed in any of the steel fibre reinforced column tested in this study. A numerical model was developed for analysis of fibre and non-fibre reinforced eccentrically loaded columns. The column is modelled as finite layers of reinforced concrete. Two types of layers are used, one to represent the hinged zone and the second the unloading portion of the column. As the concrete in the hinged layers goes beyond the peak for the stress verus strain in the concrete the section will continue to deform leading to a localised region within a column. The numerical model is compared with the test data and generally shows good correlation. Using the developed model, the parameters that affect ductility in fibre-reinforced high strength concrete columns are investigated and evaluated. A design model relating column ductility with confining pressure is proposed that includes the effects of the longitudinal reinforcement ratio, the loading eccentricity and the fibre properties and content and design recommendations are given.
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Ledwell, Noah Michael Huntington. "Corticospinal and strength adaptations following unilateral strength training after stroke." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/59445.
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Unilateral strength training of the less affected (LA) limb has been shown to improve strength bilaterally. This improved strength is referred to as cross-education in the literature. This intervention has the potential to be beneficial for individuals who cannot train both sides of the body due to post-stroke hemiparesis. To date only one group has researched cross-education in the upper limb in stroke, with varied results. The main purpose of our work was to determine if strength training of the LA forearm would change patterns of cortical excitability bilaterally after stroke, and additionally affect changes in strength and function bilaterally. Twenty-four participants with chronic (> 6 months) stroke-related hemiparesis engaged in three baseline sessions separated by 4-7 days. During these sessions individuals’ forearm strength, motor function, and motor impairment were tested, along with a TMS based assessment of corticospinal excitability and intracortical circuits. On a fourth visit participants completed their first training session using the LA arm, then were given the same wrist extension strength-training device to take home. Participants completed three 25-minute training sessions, weekly; one in the laboratory and the remaining two at home. After 5 weeks of training, participants returned to the laboratory for post-intervention retention tests. Cross-education increased strength in the LA wrist extensors (p = 0.026) and the untrained, more-affected (MA) wrist extensors (p = 0.05) in participants with chronic stroke, at the 1-week retention test. Further, LA arm strength remained increased at 5-week retention test (p = 0.023) despite there being no further training. There were strength improvements in the majority of participants in both their trained (17 of 24) and untrained (12 of 24) wrist extensors. There was a decrease in corticospinal inhibition in the LA hemisphere, and a release of interhemispheric inhibition (IHI) bilaterally. A significant increases in motor function and a decrease in motor impairment was seen, respectively. Results indicate that cross-education could be a valuable tool for increasing strength in chronic stroke. Cross-education training of the LA upper limb may allow individuals who do not have adequate function in their MA limb prior to training engage in rehabilitative interventions post-training.Medicine, Faculty of
Graduate
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Chittajallu, Dilip Roy. "“How Good Is the Street?” a Characteristic-Based Evaluation of Vine, Walnut, and Main Streets, Cincinnati, Ohio." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1093027197.
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Gregoire, Maxwell, Nathan Brooks, Raisa Trubko, and Alexander Cronin. "Analysis of Polarizability Measurements Made with Atom Interferometry." MDPI AG, 2016. http://hdl.handle.net/10150/621408.
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We present revised measurements of the static electric dipole polarizabilities of K, Rb, and Cs based on atom interferometer experiments presented in [Phys. Rev. A 2015, 92, 052513] but now re-analyzed with new calibrations for the magnitude and geometry of the applied electric field gradient. The resulting polarizability values did not change, but the uncertainties were significantly reduced. Then, we interpret several measurements of alkali metal atomic polarizabilities in terms of atomic oscillator strengths f(ik), Einstein coefficients A(ik), state lifetimes tau(k), transition dipole matrix elements D-ik, line strengths S-ik, and van der Waals C-6 coefficients. Finally, we combine atom interferometer measurements of polarizabilities with independent measurements of lifetimes and C-6 values in order to quantify the residual contribution to polarizability due to all atomic transitions other than the principal ns-np(J) transitions for alkali metal atoms.
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Amiri, Soroush. "Bond strength and shear strength of fiber-reinforced self-consolidating concrete." Mémoire, Université de Sherbrooke, 2017. http://hdl.handle.net/11143/10190.
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Le béton auto-plaçant renforcé de fibres (BAPF) est l’un des récents développements dans le monde de la technologie du béton combinant les performances de l’auto-consolidation avec la ductilité post-pic et les nombreux avantages face à la fissuration grâce à la présence des fibres dans le béton. L’utilisation de BAPF accroît l’efficacité économique globale de la phase de construction en réduisant la main d’oeuvre, ou la consommation d’énergie requise, en accélérant la vitesse de construction, la réduction ou l’élimination de ferraillage conventionnel et à la simplification des détails et placement du ferraillage. Le BAPF a gagné en popularité dans ses utilisations durant les dernières années telles dans les tabliers de ponts, les poutrelles et les poutres.
En dépit de preuve d’amélioration de synergie entre la technologie d’auto-placement et l’ajout de fibres dans le BAPF, il est obligatoire de déterminer les propriétés convenables de ce matériau pour trouver les caractéristiques inappropriées dans le béton à l’état frais et durci. A cet égard, les défauts, tels l’agglomération de fibres, la ségrégation et la performance d’écoulement et le placement incorrects à cause de propriétés rhéologiques inappropriées à l’état frais, entraînent une réduction dans la résistance évaluée.
L’objectif principal de cette étude est d’évaluer les propriétés du béton auto-plaçant (BAP), des mélanges intégrant différentes teneurs en granulats et du BAPF (avec insertion de différents types et teneurs de fibres). Ceci peut aider au développement de BAPF avec une rhéologie adaptée et une performance mécanique adéquate incluant une résistance d’adhésion et de cisaillement convenable pour des applications structurelles. Dans le but d’évaluer l’effet des fibres sur les propriétés rhéologiques de BAP à l’état frais, des mélanges intégrant quatre types de fibres avec différents élancement (L/D) seront étudiés. Ces fibres incluent des crochets d’acier (STH 55/30), du fil d’acier tréfilé (STN 65/13), de la macro-fibre synthétique de propylène (PP 56/38) et de l’alcool polyvinylique (PVA 60/12) avec différentes teneurs volumiques (0.25%, 0.5%) ajoutées au BPA de référence. Tous les mélanges ont un rapport w/b fixé à 0,42 et la teneur en granulats grossiers est respectivement de 29, 32 et 35% par volume de béton.
Les caractéristiques de béton frais ont été évaluées en considérant l’affaissement, l'évaluation du temps d’écoulement (V-funnel), l'amplitude à l'écoulement du BAP (J-Ring), le tassement de surface et le rhéomètre ConTec. Les propriétés du béton durci, en particulier la résistance à la compression, la résistance à la traction par fendage, la résistance à la flexion, et le module élastique ont été évaluées. L’effet des types de fibres, des teneurs en fibres et en granulats sur la résistance à la rupture et la robustesse du BAP au cisaillement des mélanges optimisés, incluant le BAP de référence, le SCCAGG (32% and 35%), le FRSCC ST-H (0.25% and 0.5%), le FRSCCPP (0.25% and 0.5%), le PVA (0.25% and 0.5%) et le ST-N (0.25% and 0.5%) ont été testés en utilisant l’essai de cisaillement direct pour évaluer la résistance en cisaillement et la résistance résiduelle du béton. Les résultats des essais prennent en considération la capacité portante en cisaillement de l’élément structurel fabriqué à partir de BAPF. Les résultats des essais montrent que l’ajout de fibres était beaucoup plus efficace que l’accroissement de la teneur en agrégats sur la résistance au cisaillement du BAP. L’amélioration de la contrainte au cisaillement à la rupture comparée au mélange de référence est plus grande avec 16.3% pour l’ajout de fibre de type STN 0.5%, 15.8% pour l’ajout de fibre de type STH 0.5%, 14.92% pour l’ajout de fibre de type PP 0.5% et 7.73% pour l’ajout de fibre de type PVA 0.5%. De plus, l’ajout de fibres améliore le comportement post-pic en cisaillement du BPA en comparaison à l’augmentation de la teneur en granulats. L’augmentation de la teneur en fibres de 0.25% à 0.5%, par volume de béton, a amélioré la résistance et la ténacité au cisaillement, le comportement en flexion peu importe le type de fibres. Cette amélioration a été la plus élevée dans le cas du STH 0.5% et la plus basse pour des valeurs de PVA0.5%.
La réponse de la résistance à l’adhésion des barres d’armatures localisées à différentes hauteurs de l’élément de mur (effet top-bar) a été étudiée pour des mélanges optimisés; le BPA de référence, les mélanges ST-H 0.5, et PP 0.5 ont été testés à travers l’essai d’arrachement direct des barres coulées dans le large élément de mur. Utilisation de fibres de propylène et de fibres à crochets d’acier au BPA a légèrement augmenté le facteur de modification à l’adhérence (effet top-bar) de 1 dans le cas du BPA jusque 1,1 et 1,2 pour les fibres de propylène et de crochets d’acier respectivement. Les éléments de mur fabriqués à partir du mélange de BPA de référence a montré la distribution de résistance la plus uniforme avec moins de 5% de réduction de sa résistance à l’adhérence sur la hauteur. Ces pertes de résistance à l’adhérence pour les éléments de mur coulés avec du BPA intégrant les de fibres de propylène et de fibres à crochets d’acier sont respectivement de 10% et 20%.Abstract : Fiber reinforced self-consolidating concrete (FR-SCC) is one of the recent developments in the world of concrete technology which combines the self-consolidating performance with the post-peak ductility and multiple cracking advantages due to presence of fiber reinforcement in concrete. The use of FR-SCC increases the overall economic efficiency of the construction process by reducing the workforce, or energy consumption required, increasing speed of construction, reduction or elimination of the conventional reinforcement and to the simplification of reinforcement detailing and placement. The FR-SCC has gained increasing popularity applications in the last few years such as bridge decks, girders and beams. Despite the improvement evidence of synergy between self-consolidating technology and fiber addition in the FR-SCC, finding adequate properties of this material is mandatory to find any improper characteristics in the fresh and hardened states. In this regards, defects, such as fiber clustering, segregation and improper flow performance and placement due to improper rheological properties in the fresh state, which leads to reduction in strength, are evaluated. The main objective of this study is to evaluate some rheological and mechanical properties of self-consolidating concrete (SCC) mixtures with different aggregate contents and FR-SCC (incorporating different fiber types and contents). This can help to develop of FR-SCC with adapted rheology and proper mechanical performance including bond strength and shear strength for structural application. In order to evaluate the effect of fibers on rheological properties of SCC in the fresh state, mixtures incorporating four types of fibers with different aspect ratio (L/D) were investigated. The fibers included steel hooked (STH 55/30), steel drawn wire needles (STN 65/13), synthetic macro-fiber propylene (PP 56/38) and polyvinyl alcohol (PVA 60/12) with variety of volume content (0.25%, 0.5%) added to the SCC reference. All mixtures has a fixed w/b ratio of 0.42 and different coarse aggregate contents of 29, 32 and 35%, by volume of concrete. The fresh concrete characteristics were evaluated by considering the slump flow, V-funnel, J-Ring, surface settlement and ConTec rheometer. The hardened properties, mainly compressive strength, splitting tensile strength, flexural strength, flexural toughness, and modulus of elasticity were evaluated. The effect of fiber type, fiber content, and coarse aggregate content on ultimate shear load and shear toughness of the optimized mixtures. The mixtures including SCC reference, SCC with aggregate volume of 32% and 35% (SCCAGG 32% and SCCAGG 35%), SCC incorporating ST-H fibers with the dosages of 0.25% and 0.5% (FRSCC ST-H 0.25% and FRSCC ST-H 0.5%), SCC incorporating PP fibers with the dosages of 0.25% and 0.5% (FRSCC PP 0.25% and FRSCC PP 0.5%), SCC incorporating PVA fibers with the dosages of 0.25% and 0.5% (FRSCC PVA 0.25% and FRSCC PVA 0.5%) and SCC incorporating ST-N fibers with the dosages of 0.25% and 0.5% (FRSCC ST-N 0.25% and FRSCC ST-N 0.5%) were tested using the direct shear push-off test to evaluate shear strength and residual shear strength of the concrete. These test results could be used in the shear load carrying capacity of the structural element made by FRSCC. The test results show that adding fiber was much more effective than increasing aggregate content on the shear strength behaviour of SCC. The ultimate shear stress improvement of the mixtures incorporating fiber compared to the SCC reference mixture were 16.3% for STN 0.5%, 15.8% for STH 0.5%, 14.92% for PP 0.5%, and 7.73% for PVA 0.5% mixture. Moreover, adding fibers improved the post-peak shear behaviour of SCC compared to addition of aggregate content. Increasing the fiber content from 0.25% to 0.5%, by volume of concrete, improved shear strength, shear toughness and flexural toughness behaviour regardless of the fiber types. This enhancement was highest in the case of STH 0.5% and lowest values for PVA0.5%. The bond strength response of rebars located at different heights of the wall element (top-bar effect) investigated for optimized mixtures, including SCC reference, ST-H 0.5, and PP 0.5 mixtures was tested through direct pull-out test of rebars cast in the large wall elements. Adding propylene and steel hooked fibers to SCC is found to slightly increase the bond modification factor (top-bar effect) from 1 in the case of SCC up to 1.1 and 1.2 for propylene and steel hooked fibers, respectively. The wall elements made with SCC reference mixture showed the most uniform bond strength distribution and had less than 5% reduction of bond strength along the height. These bond strength losses for wall element cast with SCC incorporating 0.5 % of steel hooked fiber and that of propylen fiber with the same volume are 10% and 20%, respectively.
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Ahmed, El-Mahadi. "Rheological properties, loss of workability and strength development of high-strength concrete." Thesis, University College London (University of London), 2002. http://discovery.ucl.ac.uk/1317867/.
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The successful production of high-strength concrete which meets the desired strength and durability is dependent on optimising its rheological (or flow) properties and reducing its loss of workability during the transportation, placing and compaction stages. The research presented in this thesis aimed to: 1. Determine whether mix stability and compactability can be adequately described by the two Bingham parameters of yield value and plastic viscosity. 2. Reduce the uncertainties in material selection with regards to the performance of superplasticizers and cement replacement materials. 3. Examine how the two Bingham parameters vary at different degrees of compaction by vibration. 4. Determine how these influence the strength development characteristics in the hardened state. 5. An additional aim was to carry out any modifications to the test apparatus and methods which experience makes necessary. Measurements with Tattersall's MH two-point workability test apparatus indicated that mix stability correlates more closely with the yield value than with plastic viscosity, whilst the opposite is true with respect to compactability under self-weight. The performance of conventional and new-generation superplasticizers (based on SMF, SNF, MLS, Vinyl and Acrylate polymers) was evaluated with different dosages, mixing procedures and cements. The SNF superplasticizer produced slightly lower initial workabilities than the Acrylate superplasticizer, but the longest workability retentions of the superplasticizers tested. Partial cement replacements by CSF in binary blends produced lower superplasticizer dosage demands, higher initial workabilities and longer workability retentions than those due to PFA and GGBS. When used in ternary blended cements, CSF enhanced the performance of mixes containing PFA or GGBS at w/b ratios of 0.30-0.22. A novel method developed to assess the vibration response of fresh concretes has, for the first time, demonstrated that both the yield value and plastic viscosity decrease during compaction. The method has also demonstrated that the maximum compressive strengths and densities of concretes compacted for different vibration durations/amplitudes coincide with the attainment of zero yield value. Continuous reductions in plastic viscosity during vibration mainly reduced the homogeneity of concrete compacted in short columns.
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Kim, Minjae Ph D. Massachusetts Institute of Technology. "Strength matters : tie strength as a causal driver of networks' information benefits." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/109653.
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Thesis: S.M. in Management Research, Massachusetts Institute of Technology, Sloan School of Management, 2017.Vita. Cataloged from PDF version of thesis.
Includes bibliographical references (pages 39-43).
Studies of social networks have often taken the existence of a social tie as a proxy for the transmission of information. However, other studies of social networks in the labor market propose that the likelihood of information transmission might depend on strength of the tie; and that tie strength is a potentially important source of the tie's value. After all, even if job seekers have social ties to those who have valuable job information, the seekers will gain little information benefit when the ties do not actually transmit the information. This paper clarifies the conditions under which social ties might provide information benefits. We use a survey vignette experiment and ask MBA students about their likelihood of relaying job information via strong ties (to friends) or weak ties (to acquaintances), holding constant the structural locations spanned by the tie and job seekers' fit with the job. The results support the claim that strength of tie has a causal effect on the chances of information transmission: potential referrers are more likely to relay job information to their friends than to acquaintances. The larger implication of these findings is that whatever benefits there might be to using weak ties to reach distant nonredundant information during job search, these benefits need to be considered against the likely fact that people connected via weak ties are less likely to actually share information about job opportunities than are people to whom the job seeker is strongly tied.
by Minjae Kim.
S.M. in Management Research
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Soutsos, Marios Nicou. "Mix design, workability heat evolution and strength development of high strength concrete." Thesis, University College London (University of London), 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308062.
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A literature survey of the properties and uses of high strength concrete, defined for this study as having a strength in excess of 60 N/tnm2, has shown that of prime need is a systematic, reproducible procedure for attaining high strength concrete. The "Maximum Density Theory", i.e. the requirement that the aggregate occupies as large a relative volume as possible, has been adopted as an approach to optimisation of the mix proportions. However, this does not consider the effect that the aggregate suIface area has on the requirement of excess paste for lubrication. To investigate the combined effect of void content and surface area, mixes with lower sand proportions than that required for minimum void content were tested for slump. The optimum sand proportion is the one that produces the highest slump, for a particular cement content. This procedure has been called: "The Modified Maximum Density Theory". Having thus optimised the cement and aggregate contents, partial cement replacement by mineral admixtures, at low water-cement ratios, has been investigated in order to assess: a) their contribution to long term strengths, b) their contribution to reducing the heat evolution of concrete mixes, and c) their effect on the workability of concrete. Condensed silica fume (at replacement levels of up to 15%) produced higher compressive strengths than ordinary Portland cement. Ground granulated blast furnace slag (at replacement levels of up to 30%) can be used without decreasing the 28-day strength. Replacement by 20% pulverised fuel ash resulted in a 15% decrease in the 28-day strength and equal strength to ordinary Portland cement concrete at ages beyond 56-days. Temperature measurements during hydration, under adiabatic conditions, have however shown that these replacement levels do not lower the temperature rise at a water-binder ratio of 0.26. The higher levels required for significant temperature reduction will also cause a significant reduction in the strength. To offset this ground granulated blast furnace slag (58%) and pulverised fuel ash (36%) in combination with 10% condensed silica fume 4 were used. These combinations reduced the temperature rise by more than 10°C while the reduction in the 28-day compressive strength was less than 15%. Partial cement replacement by pulverised fuel ash and ground granulated blast furnace slag improved the workability and therefore allowed a reduction in the superplasticiser dosage required for a given slump. The use of condensed silica fume reduces the workability at low superplasticiser dosages, but it has a water-reducing effect above a certain superplasticiser dosage. Results from these studies have been used to formulate guidelines for the proportioning of materials for producing high strength concrete.
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Strnisková, Veronika [Verfasser]. "Der Budweiser-Streit als Beispiel eines Konflikts zwischen Handelsmarken und geographischen Angaben – mögliche Lösungen des Streits / Veronika Strnisková." Aachen : Shaker, 2011. http://d-nb.info/1070152560/34.
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Tsao, Chia-Lin. "A street life project : walking on main streets in Hsin-Chu City Centre, Taiwan : a socio-cultural approach." Thesis, Oxford Brookes University, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.490489.
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Wallendorf, Anneke. "Interface : activating a transitional space between private retail interiors and exterior public streets in Robert Sobukwe Street Sunnyside." Diss., University of Pretoria, 2014. http://hdl.handle.net/2263/45294.
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Many of the buildings along Robert Sobukwe Street have been renovated in an effort to regenerate the area, including the Sunny Park Mall. These renovations have improved the general perception of the street but not the overall accessibility to the interior spaces behind the facades. The building facades are a barrier between exterior and interior spaces with little integration.
A decline in the pedestrian activity of the retail street stores has occurred due to these renovations in other areas. Consideration towards pedestrian users has shifted from the public street to the design for private interiors.
Through the understanding of user behaviour, an intervention strategy can be formed to align social needs with the spatial needs of both the public and private users to inform a design which satisfies both.
This intervention utilises the principles of way finding, activities and thresholds to build an interface linking the two environments based on the private needs for occupation and public need for interaction.
It provides a strategy to incorporate exterior spaces into a design and not limit the field to the space between the walls of existing buildings. To extend the space and create a transition dedicated to engaging the needs of both users is beneficial to the development and sustainability of this context.Dissertation (MInt(Prof))--University of Pretoria, 2014.
Architecture
MInt(Prof)
Unrestricted
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Engelin, Edvinsson Tobias. "Reimagine streets as places : A public space and public life analysis." Thesis, KTH, Urbana och regionala studier, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-298536.
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I århundraden har gator haft ett ekonomiskt, medborgerligt, kulturellt, socialt och politiskt värde. Gator var tidigare de främsta ‘platserna’ där människor samlades för att umgås, handla och koppla av. Men från 1950-talet och framåt, då antalet motoriserade fordon började ta fart, har gatornas funktion som ‘plats’ förbisetts. Som ett resultat har gator utformats och planerats för ett enda syfte, det vill säga flödet av fordonstrafik. Men i takt med ett växande intresse för social och urban hållbarhet har den moderna gatans roll och funktion i våra städer ifrågasatts. Kritiken har ofta riktats mot att gator under de senaste årtiondena endast behandlats som korridorer för trafikflöden fastän de kan erbjuda så många fler funktioner. Diskussionen har därför till stor del handlat om behovet av ett skifte från gata som en länk eller en trafikled till gata som en plats eller en destination. Under senare år har olika begrepp såsom ”gator för människor” och ”gator som platser” fått stor uppmärksamhet. Dessa koncept syftar till att utgå från människor vid utformning och planering av gator. Exempel från hela världen visar hur allt fler städer tar gator i anspråk och omformar dessa till just platser för människor. I Stockholm exempelvis finns det en tradition sedan år 2015 att tillfälligt omforma konventionella bilgator till sommargågator för människor under sommarhalvåret. Syftet med denna studie är att mäta och utvärdera det offentliga livet och de rumsliga kvaliteterna före och efter den temporära utformningen av Rörstrandsgatan och Skånegatan till sommargågator i Stockholm. Vidare är fokus för denna studie att utforska nyckelbegrepp och teorier för hur man utformar ”gator som platser”. De två huvudfrågorna som ska besvaras i denna studie är: (1) Hur förändras det offentliga stadslivet och de offentliga rumsliga kvaliteterna före och efter den tillfälliga omformningen av Rörstrandsgatan och Skånegatan till sommargågator? (2) Vilka är nyckelbegreppen och de viktigaste teorierna inom stadsplanering för diskussionen om ”gator som platser”? I denna studie har två metoder använts; direkt observation och litteraturstudie. Direkt observation följer Jan Gehls observationsmetod. Det är en metod som används för att studera samspelet mellan det offentliga rummet och det offentliga stadslivet genom att använda en kombination av flera olika verktyg. Dessa verktyg kan i sin tur användas för att mäta det offentliga stadslivet på olika sätt. En litteraturstudie har också använts för att samla information om olika teorier för hur man skapar gator där människor vill vistas och spendera tid. Resultaten i denna studie visar att sommargator har en positiv inverkan på det offentliga stadslivet. Exempelvis noterades fler sociala interaktioner mellan människor, antalet aktiviteter som ägde rum ökade också vilket gjorde gatan livligare under hela dagen. Resultatet visar också att människor dröjer sig kvar och stannar till en längre stund på sommargågatorna.For centuries streets have had an economic, civic, cultural, social and political value. Streets used to be the major ’places’ where people gathered to socialize, trade and relax. However, since the growth of motorized vehicles started in the 1950s, the ‘place’ function of streets has been overlooked. As a result, streets have been planned for one major purpose only, that is, the mobility of vehicular traffic. However, with today’s growing emphasis on urban and social sustainability, it is being recognized that there is a need to shift the function of streets and instead favor the ‘place function’ over the ‘traffic function’. Streets are much more than corridors of vehicular movement. In recent years, concepts such as ‘streets for people’ and ‘streets as places’ have gained much attention. These concepts aim to put people first in the design of streets. All around the world cities are reclaiming streets as public spaces for people. In Stockholm, for example, conventional streets are temporarily redesigned as summer pedestrian streets during the summer. The purpose of this study is to measure and evaluate the success of public life and public space qualities before and after the temporary redesign of Rörstrandsgatan and Skånegatan into summer pedestrian streets in the city of Stockholm, Sweden. Further on, the focus of this study is also to explore key concepts and main theories of how to design ‘streets as places’. The two research questions to be answered in this study are: (1) How does public life and public space qualities change before and after the temporary redesign of Rörstrandsgatan and Skånegatan into summer pedestrian streets? (2) What are the key concepts and main urban planning theories needed in the discussion of ‘streets as places’? For this study two methods were used; direct observation and literature review. Direct observation follows Jan Gehl’s method of observation. It is a method used for studying the interaction of public space and public life by using a combination of multiple public life tools. Overall, these tools can be used to measure public life in various ways. Literature review was used to determine the fundamental factors that contributes to make streets places where people want to spend time and linger. The results show that summer pedestrian streets have a positive impact on public life. For example, more social interactions were observed, the amount of activities taking place also increased making the street more lively throughout the day. The result also shows that people stay a longer time on the summer pedestrian streets and linger.
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Wang, Hao. "Theoretical strength of solids." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/42747.
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Theoretical strength of solids is defined as the ultimate strength beyond which plastic deformation, fracture, or decohesion would occur. Understanding the microscopic origin from quantum mechanics and thermoelastic formulation is of great importance to mechanical properties and engineering design of various solids. While quite a few theory models have been made in the past century by several generations of scientists, including Frankel and Born, a general and convincing framework has not been fully established. We study this issue from three respects: (1) Unify various elastic stability criteria for solids that determine an upper bound of theoretical strength; (2) with ab initio method, we test the elastic stability conditions of crystal Au. The phenomenon of bifurcation is observed: under hydrostatic expansion, the rhombohedral modulus reaches zero first of all; while under uniaxial tensile stress, the tetragonal shear modulus first reaches zero; (3) propose a nonlinear theoretical formulation of stability criterion. As an analytic method, this scheme is quite simple, in the mean time, it saves computation resource.
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Raaphorst, Sebastian. "Variable Strength Covering Arrays." Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/23684.
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Recently, covering arrays have been the subject of considerable research attention as they hold both theoretical interest and practical importance due to their applications to testing. In this thesis, we perform the first comprehensive study of a generalization of covering arrays called variable strength covering arrays, where we dictate the interactions to be covered in the array by modeling them as facets of an abstract simplicial complex.
We outline the necessary background in the theory of hypergraphs, combinatorial testing, and design theory that is relevant to the study of variable strength covering arrays. We then approach questions that arise in variable strength covering arrays in a number of ways. We demonstrate their connections to hypergraph homomorphisms, and explore the properties of a particular family of abstract simplicial complexes, the qualitative independence hypergraphs. These hypergraphs are tightly linked to variable strength covering arrays, and we determine and identify several of their important properties and subhypergraphs.
We give a detailed study of constructions for variable strength covering arrays, and provide several operations and divide-and-conquer techniques that can be used in building them. In addition, we give a construction using linear feedback shift registers from primitive polynomials of degree 3 over arbitrary finite fields to find variable strength covering arrays, which we extend to strength-3 covering arrays whose sizes are smaller than many of the best known sizes of covering arrays.
We then give an algorithm for creating variable strength covering arrays over arbitrary abstract simplicial complexes, which builds the arrays one row at a time, using a density concept to guarantee that the size of the resultant array is asymptotic in the logarithm of the number of facets in the abstact simplicial complex. This algorithm is of immediate practical importance, as it can be used to create test suites for combinatorial testing.
Finally, we use the Lovasz Local Lemma to nonconstructively determine upper bounds on the sizes of arrays for a number of different families of hypergraphs. We lay out a framework that can be used for many hypergraphs, and then discuss possible strategies that can be taken in asymmetric problems.
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Lin, Ying-Tsair. "Ship longitudinal strength modelling." Thesis, University of Glasgow, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320513.
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Othman, R. B. "High-strength interstitial alloys." Thesis, University of Newcastle Upon Tyne, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373060.
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Stone, Michael H. "Strength Training and Endurance." Digital Commons @ East Tennessee State University, 2007. https://dc.etsu.edu/etsu-works/4576.
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Hornsby, W. Guy, Margaret E. Stone, and Michael H. Stone. "Strength and Conditioning Coaching." Digital Commons @ East Tennessee State University, 2013. https://dc.etsu.edu/etsu-works/4680.
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