Relevant bibliographies by topics / Barrier-free lift

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Barrier-free lift'

Author: Grafiati
Published: 4 June 2021
Last updated: 4 February 2022

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Journal articles on the topic "Barrier-free lift"

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Hashino, Satoshi. "Development of Stair-climbing Wheelchair." Journal of Robotics and Mechatronics 14, no. 6 (December 20, 2002): 524–30. http://dx.doi.org/10.20965/jrm.2002.p0524.

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Construction of barrier free society is desired especially for elderly and handicapped who need to use wheelchair in daily life. Stair climbing is the hardest barrier for those people. Supply of stair lift method is contribution to provide joy and satisfaction in life of those people. By using our developed crawl-type mechanism on powered wheelchair, they can easily and effectively climb up and down stairs. These system are composed of two subsystems, a few reformed powered wheelchair, drive guide and traction guide attached to stair wall. Presented system is cost effective compared with other existing methods such as elevators, escalators and conventional stair lifts.
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SATO, Yuki, Atsushi OSAKI, and Takashi KINOSE. "MF313 Study on Improvement of a Barrier-free Environment of Ordinary House by Putting in the Lift." Proceedings of the JSME Symposium on Welfare Engineering 2007 (2007): 222–24. http://dx.doi.org/10.1299/jsmewes.2007.222.

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KANEKO, Hirotaka, Shigeru TADANO, and Kouya SARUTA. "302 A Development of Outdoor-Lift to Realize Barrier-Free at Entrance of House in Snowy and Cold Region." Proceedings of Conference of Hokkaido Branch 2001.41 (2001): 76–77. http://dx.doi.org/10.1299/jsmehokkaido.2001.41.76.

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Feng, Li-Hao, Kwing-So Choi, and Jin-Jun Wang. "Flow control over an airfoil using virtual Gurney flaps." Journal of Fluid Mechanics 767 (February 20, 2015): 595–626. http://dx.doi.org/10.1017/jfm.2015.22.

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AbstractFlow control over a NACA 0012 airfoil is carried out using a dielectric barrier discharge (DBD) plasma actuator at the Reynolds number of 20 000. Here, the plasma actuator is placed over the pressure (lower) side of the airfoil near the trailing edge, which produces a wall jet against the free stream. This reverse flow creates a quasi-steady recirculation region, reducing the velocity over the pressure side of the airfoil. On the other hand, the air over the suction (upper) side of the airfoil is drawn by the recirculation, increasing its velocity. Measured phase-averaged vorticity and velocity fields also indicate that the recirculation region created by the plasma actuator over the pressure surface modifies the near-wake dynamics. These flow modifications around the airfoil lead to an increase in the lift coefficient, which is similar to the effect of a mechanical Gurney flap. This configuration of DBD plasma actuators, which is investigated for the first time in this study, is therefore called a virtual Gurney flap. The purpose of this investigation is to understand the mechanism of lift enhancement by virtual Gurney flaps by carefully studying the global flow behaviour over the airfoil. First, the recirculation region draws the air from the suction surface around the trailing edge. The upper shear layer then interacts with the opposite-signed shear layer from the pressure surface, creating a stronger vortex shedding from the airfoil. Secondly, the recirculation region created by a DBD plasma actuator over the pressure surface displaces the positive shear layer away from the airfoil, thereby shifting the near-wake region downwards. The virtual Gurney flap also changes the dynamics of laminar separation bubbles and associated vortical structures by accelerating laminar-to-turbulent transition through the Kelvin–Helmholtz instability mechanism. In particular, the separation point and the start of transition are advanced. The reattachment point also moves upstream with plasma control, although it is slightly delayed at a large angle of attack.
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Dunn, Peter A. "Chapter 4.A Comparative Analysis of Barrier-Free Housing." Journal of Housing For the Elderly 12, no. 1-2 (August 27, 1997): 37–53. http://dx.doi.org/10.1300/j081v12n01_04.

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Altinay, Fahriye, Zehra Altinay, Mehmet Altinay, and Gökmen Dagli. "Evaluation of the Barrier-Free Tourism and Sustainability of the Barrier-Free Society in Cyprus." European Journal of Sustainable Development 9, no. 4 (October 1, 2020): 137. http://dx.doi.org/10.14207/ejsd.2020.v9n4p137.

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The main aim of the current study is to evaluate the opinions of the students at the departments of tourism and special education towards to the concept of sustainability of barrier-free tourism and society therefore with the light of this aim, and current study attempted to address how disabled individuals could have an access to the tourism and life opportunities as well as the challenges that they are experiencing while having an access to these opportunities, probable solutions which might be employed to cope with these challenges, universal rights of the disabled individuals about having an access and transportation in contexts barrier-free tourism practices in TRNCThe current study employed a semi-structured interview as a data collection tool. The study group of the current research consisted of 80 participants who are the students at the tourism and specialized education teaching departments at Near East University and the University of Kyrenia. Data were collected with 20 minutes face to face interviews. While performing data analysis, responses of the participants were categorized and placed to the tables and then the researcher(s) re-examined the classified data set and formed underlying themes and categories. With the light of the findings, it can be stated that education at universities, secondary and primary schools should be intensified to inject necessary information to the students regarding barrier free tourism and provision of health care services for disabled people. At the reffered point. joint commitment should be carried among ministry of education, tourism, heallth and municipalities to raise public awareness regarding barrier free tourism. Additionally media and press should design more programs regarding barrier free tourism at their broadcasting stream to raise public awareness, and in-service trainings for disabled people should be provided to employees in hotels. Keywords: Barrier- Free Tourism, Sustainable Society, Education, Accessibility, Awareness
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Cao, Hong. "Use the Conception of Universal Design to Instruct Housing Construction." Applied Mechanics and Materials 174-177 (May 2012): 1669–72. http://dx.doi.org/10.4028/www.scientific.net/amm.174-177.1669.

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The housing construction should show the barrier-free design. By reflecting the status quo of the barrier-free design of houses in China, the paper analyses the profound meaning of instructing housing construction with the universal design，and further explores "universal houses" which adapt to all people throughout the whole life.
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Mabuchi, Mamoru, Kohmei Halada, and Tatsuhiko Aizawa. "Barrier-Free Processing of Materials for Environmentally Benign Life-Cycle Design." MATERIALS TRANSACTIONS 43, no. 3 (2002): 285–91. http://dx.doi.org/10.2320/matertrans.43.285.

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Kock, Martin. "Disability Law in Germany: An Overview of Employment, Education and Access Rights." German Law Journal 5, no. 11 (November 1, 2004): 1373–92. http://dx.doi.org/10.1017/s2071832200013286.

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Under German law, people with disabilities are entitled to help and assistance in order to avert, eliminate or improve their disability. The general goal is to overcome, as much as possible, the disability's effects and to enable the disabled to participate in all areas of society, especially in the labor market and in community life. The Federal Government is obliged to a barrier-free design and construction of public buildings, streets, etc. and to provide barrier-free access to communication, especially in the field of administrative Internet sites, official forms and notifications. In the area of public transportation, all facilities and means of transportation (bus, train, aircraft) are also required to be barrier-free. The same applies to restaurants.
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Khomutova, N. N., K. A. Vizner, S. A. Makhortova, and S. N. Chudievich. "Eyblism and the Social Environment in Theory and Practice." Sociology and Law, no. 4 (December 31, 2020): 25–31. http://dx.doi.org/10.35854/2219-6242-2020-4-25-31.

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The problem of the discrimination of people with disabilities remains being an urgent social problem. Misunderstanding of the meaning of this problem by others results in a situation when invalid’s level of life cannot be equal to a healthy person’s level of life. This article raises the issue of ableism in order to explore the idea of barrier-free environment integration. The results of a social survey are demonstrating a good level of respondent’s awareness concerning this problem and their will to participate in a discussion and taking of measures for the integration of a barrier-free environment with the intention to raise the invalid’s level of life.
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Dissertations / Theses on the topic "Barrier-free lift"

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Pospíchal, Pavel. "Fitness a Wellness centrum." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2018. http://www.nusl.cz/ntk/nusl-371942.

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The diploma thesis is about design and project documentation of fitness and wellness center. The designed object is situated in the outskirts of Havlíčkův Brod in a quiet environment and with direct connection to the city dam. The object is a three-storey partially-basement building with a flat green roof in three levels. The building is based on the base passages of plain concrete, reinforced concrete slabs and beads. The supporting, peripheral and partition walls are designed from the VELOX system. The outer casing consists of cement slab, reinforced concrete core and thermal insulation. In open-plan areas there are designed reinforced concrete columns. The ceiling structure is predominantly designed from reinforced concrete slabs to lost formwork. Part of the facade is plastered, the other part is ventilated. Individual architectural elements divide the object into units and fit into the natural landscape. The object is divided into several tracts where each has its own purpose and specification. In the 1st floor there is a gym, room for trainers and coordinating training room. In the center there is atrium, reception, cloakroom, buffet and public toilets. Vertical communication is possible using a suspended staircase or a hydraulic lift. On the 1st underground floor there is a reception desk and cloakroom for disabled people. In the western part of the tract there is an indoor pool with whirlpool, of course there are cloakrooms divided for men and women. The eastern part of the tract is used as a technical room of air-conditioning, there are also 3 saunas, including a relaxation room and dressing room. All facilities on the 1st underground floor have access to an outdoor park, including a dam and outdoor whirlpools. In the 2nd floor there is a staffing facility, an area for manegement, technical rooms and an outdoor green terrace. The designed object is designed for disabled people. Around the object there is designed a car park for 33 cars.
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Pospíšil, Václav. "Medicínské centrum." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-410080.

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The subject of my diploma thesis is the design of a new medical center MEDCEN in the area of the Jihlava hospital, on plot no. 4374/1. The total land area is 22 706 m2. The building has three aboveground and one underground floor. The vertical bearing structure consists of masonry ceramic elements, which are complemented by a monolithic, water-reinforced concrete in the underground floor. Vertical peripheral structures are equipped with thermal insulation system, in the above-ground floors with ventilated facade. The vertical load-bearing structures are made of prefabricated reinforced concrete panels and reinforced by reinforced concrete beams at the local load. The whole building is designed flat single-skin roof with a classic order of layers, where the main waterproofing layer consists of plasticized PVC foils. The layout of the building is divided into left and right wing, which connects the central central part. The entire underground floor is designed to be operational, there are parking spaces for employees, storage facilities and technical facilities of the building. Individual offices, nurses and waiting rooms are designed on all above-ground floors. In the central central part are designed sanitary rooms for visitors and employees. On the first floor is a pharmacy and X-ray examination room. On the third floor there are two office management offices and one-day surgery premises.
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Leung, Chun-sing Anthony. "Old People's community : care home /." Hong Kong : University of Hong Kong, 2001. http://sunzi.lib.hku.hk/hkuto/record.jsp?B25950368.

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Jánská, Kamila. "Bytový dům." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265228.

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Diploma thesis describes the design and processing of project documentation of the apartment building. The apartment building is located in the central part of the city of Brno, in the district of Štýřice. The building has 5 floors. Its basementless with flat roof and it is based on the footings of plain concrete. Load-bearing, peripheral walls and partitions are designed from ceramic blocks POROTHERM. Ceiling construction is designed to be assembled of ceramic ceiling fittings MIAKO built on POT supports. Peripheral walls of all floors are insulated with external thermal insulation composite system ETICS with thermal insulation of mineral wool. In the place of the plinth is wool replaced by XPS polystyrene. In the facade there are anchored wooden lattice constructions using ProPasiv anchors. These constructions are covered by façade cladding sheets CEMBRIT METRO and they devide whole building into separate units. There is housing and communal part of the building. On the first floor there are storage areas, the main service room, utility room and two barrier-free apartments. In the second to the fifth floor there are 9 residential units, one of which is designed as duplex apartment . All floors are connected by staircase and wheelchair lift. Parking for 17 cars is designed in front of the building . Two parking spaces are wheelchair accessible.
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Moody, Michelle Reid. "Final boundaries : a design for the fully-constructed body-subject." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/23316.

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Perry, Jill, and University of Lethbridge School of Health Sciences. "Designed for life : disabled/enabled at home." Thesis, Lethbridge, Alta. : University of Lethbridge, School of Health Sciences, 2008, 2008. http://hdl.handle.net/10133/734.

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Using a phenomenological hermeneutic methodology, this thesis describes the lived experience of people with mobility impairments in the context of their home environment. Nine individuals with mobility impairments were interviewed at length regarding their experiences in their homes. From the resulting narratives, the data were arranged under three thematic statements: Doing my thing, Being myself, and Evolving with my environment. The study highlights the interdependent nature of the person-environment-occupation relationship and reveals the potential for an enabling home design to affect all areas of human occupation (self-care, productivity and leisure). The efficient performance of self-care activities in the home emerged as being somewhat predictive of the extent to which participants were involved in the areas of productivity and leisure. This thesis offers support for the social model of disability and illuminates the need for incorporating universal design in all homes.
x, 98 leaves ; 29 cm. --
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Pilný, Ondřej. "Zdravotnické středisko Hlinsko." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2018. http://www.nusl.cz/ntk/nusl-372049.

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This diploma thesis deals with the design and elaboration process of a project documentation of medical center in city Hlinsko. New building is situated in the northern part of the city in the area determined for constructions of public infrastructure. It´s a four-floor object with partial basement and slant mansard and flat vegetative roof.Object is based on foundation strips and footings made from reinforced concrete.The bearing and internal walls are designed from KALKSANDSTEIN lime sand blocks.The beams and collums are used in the placed designed with open disposition.The ceiling in 1.PP is designed as reinforced concrete for securing fire safety.The rest od ceiling constructions is designed from prestressed concrete panels SPIROLL,with exception in 4.NP,where the ceiling constructions are made from solid roof system YTONG KOMFORT,which is layed on frame system made of steel and reinforced concrete.The peripheral walls of 1.PP are made from lost formwork, which is insulated with extruded polystyrene.The walls in floors above ground are insulated with combination of external thermal insulation system (ETICS) and ventilated facade with CEMBRIT SOLID and PATINA facade cladding panels. The building is functionally divided into several part.Cafe, pharmacy, ambulance and medical center, each with it´s own entrance.Pharmacy is equipped with shop, medicine mixer and storage.Ambulance is equipped with garage slots, background for employees, room of crisis preparedness and operating center.Medical centrum is equipped with emergency, RTG, operating theater, rehabilitations and other types of examination rooms.Each examination room is equipped with waiting room.For more comfort the center has a background for employees.The whole object is designed with forced air exchange. Designed object is barrier-free.In front of the building is situated parking slots for cars, motorbikes and ambulances.Total number of slots is 74 places, which 5 is designed for disabled people.
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Hort, Martin. "Polyfunkční dům." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-410007.

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Diploma thesis describes the design and processing of project documentation of the multifunctional building. The multifunctional building is located in the central part of the town Náměšť nad Oslavou. The building has 4 floors. It is partly cellared building with flat roof and walkable terraces. This building is consisted of 2 functional parts, the first part is designed for living and the second one is designed for contact with the customer. There are shops and offices. The first floor is wheelchair accessible. In the basement there is a technical background of the building and cellars for housing units. In this multifunctional building we can find 13 residential units and five offices. All of the floors are connected with staircase and lift. The Carpark and the private garden with playground are also part of this residential area. This building is based on concrete blocks. Load-bearing, peripheral walls and connecting walls are made of ceramic blocks. A monolitic ceiling construction is the combination of the iron and the concrete. Two types of insulation are used in peripheral walls. The first one is called ETICS, external thermal insulation composite system, made of polystyrene. The second type of insulation is facade cladding system where the main insulation layer is made of mineral wool. The insulation layer is replaced by XPS polystyrene where facade is in contact with the ground. Facade cladding panels are made of cement and wood fibers called Cembrit.
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Konar, Devoshini. "A qualitative study of the relationship between disability, access and service provisions on the quality of life of the disabled in the Greater Durban Metropolitan Area." Thesis, 2008. http://hdl.handle.net/10413/344.

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Huang, Yi-Xiang, and 黃義翔. "Make Actions and Let Life Easier: Explore the Barrier-free Environment for the High School Students with Physical Disabilities and Their Main Caregivers." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/498c7s.

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碩士
國立東華大學
特殊教育學系
102
This study aims to investigate in the status of campus barrier-free environment for two high schools, to identify the perceptions of the students with physical disabilities in using barrier-free environment, and to collect the ideas of the students’ main caregivers toward the design of the barrier-free environment. The participants of this study included three high school students with physical disabilities and their main caregivers. The data was collected by using the field investigation form and semi-structured interviews. In order to get the final results, the researcher analyzed data corresponding to purpose of the research. The findings of this study are as follows: 1. On average, the total qualification rate of barrier-free environment for the school A and school B was 89.2% and 92.3% respectively. Their qualification rate were nearly or more than 90%, which means the school did an excellent job for the students with physical disabilities. 2. Three students with physical disabilities and their main caregivers were very satisfied with two accessibility facilities “refuge floor entrance and exit” and “wheelchair auditorium”, therefore they did not provide any improvement suggestions. However, except the two facilities mentioned, the six participants were less satisfied in other facilities. Therefore, they provided different suggestions to their schools. 3. Other significant research findings included “some viewpoints of students with physical disabilities and main caregivers were not included in the barrier-free environment regulations”, “students with physical disabilities and main caregivers were more satisfied for current school’s barrier-free environment than their previous one”, “students with physical disabilities and main caregivers had individual perceptions about the feeling of invisible accessibility”, “students with physical disabilities have depended upon other’s assistance”. Finally, based on the results of the research, the researcher made several recommendations to governments, schools, teachers, caregivers, and future researchers.
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Books on the topic "Barrier-free lift"

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Maryland Homes for Life Coalition of Howard County. Homes for life: Using universal design to create barrier free homes for better living. [Ellicott City, MD (P.O. Box 6686, Ellicott City 21042)]: The Coalition, 2003.

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Schwarz, Shelley Peterman. Home accessibility: 300 tips for making life easier. New York, NY: Demos Medical Pub., 2012.

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Tada, Joni Eareckson. Barrier-free friendships: Bridging the distance between you and friends with disabilities. Grand Rapids, Mich: Zondervan Pub. House, 1997.

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Donoghue, Edward A. ADA & vertical transportation: A handbook on accessibility regulations for elevators, wheelchair lifts and escalators. Mobile, Ala: Elevator World, 1993.

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Donoghue, Edward A. ADA & vertical transportation: A handbook on accessibility regulations for elevators, wheelchair lifts, and escalators. Mobile, AL (P.O. Box 6507, Mobile 36660): Elevator World, Educational Division, 1993.

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Agency, Medical Devices. Guidance on the safe use of wheelchairs and vehicle-mounted passenger lifts. London: Medical Devices Agency, 2003.

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1935-, Hoffmann Diethelm, ed. Das Wohnstift Klosterkirchhof =: The Klosterkirchhof Home. Berlin: Ernst, 1994.

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Davie, Ann Rose. That all may worship: An interfaith welcome to people with disabilities. Edited by Thornburgh Ginny and National Organization on Disability (U.S.). Washington, DC: National Organization on Disability, 2000.

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Davie, Ann Rose. That all may worship: An interfaith welcome to people with disabilities. Edited by Thornburgh Ginny and National Organization on Disability (U.S.). Washington, D.C: National Organization on Disability, 1992.

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Chicago Transit Authority. Research and Planning Dept., ed. Lift-equipped fixed-route bus survey: A comparison of service characteristics and issues among transit operators. Chicago, IL: The Authority, 1990.

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Book chapters on the topic "Barrier-free lift"

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Yoshino, Takashi, and Katsuya Ikenobu. "Language-Barrier-Free Room for Second Life." In Cognitive Technologies, 167–82. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-21178-2_11.

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"Lifts." In Barrier-Free Design, 82–100. Routledge, 2012. http://dx.doi.org/10.4324/9780080499772-16.

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Dubilet, Alex. "Conceptual Experimentation with the Divine." In The Self-Emptying Subject. Fordham University Press, 2018. http://dx.doi.org/10.5422/fordham/9780823279463.003.0003.

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This chapter shifts from Eckhart’s sermons to his Biblical commentaries to show how his theorization of univocity and immanence has a concrete theological and exegetical basis. It argues that for Eckhart, God is not a name for a pious barrier to thought or action, but the site of the most fruitful conceptual experimentation. Through speculative exegesis of key Christian theological topics, Eckhart subverts the theological and cosmological hierarchies in order to make room for a dispossessed, univocal life of radical equality “with God.” By showing how Eckhart employs the divine in order to theoretically articulate absolute immanence, this chapter acts as a provocation to the standard discursive distributions—between philosophy and theology, between medieval and modern, between religious and secular—and the assumptions that underwrite them. It articulates a figure unacceptable to common secularization narratives—a religious figure that prayed to God to be free of God in order to become free of one’s self as a possession, and yet in so doing was not espousing a covertly atheist position, but an exegetically-grounded formulation of life free not only from the regime of disciplinary practices, but also from all transcendent grounding.
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Crissey, Etsuko Takushi. "Living in America." In Okinawa's GI Brides. University of Hawai'i Press, 2017. http://dx.doi.org/10.21313/hawaii/9780824856489.003.0007.

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Witnesses at the 2012 trial in Ohio of a former airman convicted of beating his Okinawan wife to death testified that he had often battered her. The case exemplified the isolation of wives who arrive with no acquaintances in the U.S. besides their husbands, and cannot overcome the language barrier to make other contacts. Isolation also results from the individualistic nature of American society. Interviewees accustomed to close relationships with relatives and neighbours typical in Okinawa were surprised that in the U.S. “neighbours don’t even speak to each other.” Many suffered from homesickness. However, one expressed her gratitude for the close friendship and support of an American woman next door who guided her to the supermarket and post office, teaching her the essentials for daily life. Several encountered racial discrimination in employment, marriage (before 1967), and the bullying of their children in school. Some women had been apprehensive about coming to the U.S. where Japanese Americans were interned during World War II and anti-Japanese hostility persisted afterwards. Those whose husbands were still in the military had free family health care and discount shopping, but had to endure their husbands’ long absences, and deployments to areas of conflict.
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Conference papers on the topic "Barrier-free lift"

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Abdelraouf, Hatem, Sadek Z. Kassab, and Ahmed M. Nagib Elmekawy. "Simulations of Flow Separation Control Using Different Plasma Actuator Models." In ASME 2020 Fluids Engineering Division Summer Meeting collocated with the ASME 2020 Heat Transfer Summer Conference and the ASME 2020 18th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/fedsm2020-20426.

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Abstract This study investigates the active flow control on NACA0012 airfoil numerically by introducing dielectric barrier discharge (DBD) plasma actuators. The flow over the airfoil simulations were performed using ANSYS program for free-stream velocity 14.6 m/s with wide range of angle of attacks (from 0 to 20 degrees) on NACA0012 airfoil with applied voltage 16 kV across the electrodes. There are several plasma actuator models, which simulate the effect of the plasma actuator. This paper focuses on two numerical methods: Shyy model and Suzen model. They depend on calculating the induced body force of the plasma and import it in Navier Stokes equation as an external body force. Mesh independence study is performed on the airfoil and validate the results without plasma activation with the experimental results. Two actuators were added at positions 0.1 and 0.3 of the chord length to the airfoil and an investigation is performed on the lift CL and drag Cd coefficients of the airfoil without and with the activation of the plasma. Thereafter, a comparison between the numerical results of two different plasma simulation models that were applied.
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Aono, Hikaru, Taku Nonomura, Aiko Yakeno, Kozo Fujii, and Koichi Okada. "Plasma Flow Control Simulation of an Airfoil of Wind Turbine at an Intermediate Reynolds Number." In ASME 2013 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/fedsm2013-16327.

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The flow over a National Renewable Energy Laboratory S825 airfoil was simulated for a chord Reynolds number of 7.5×105 and an angle of attack of 22.1 deg. These conditions approximately matched a blade element condition of 75% radius of 42-m-diameter wind turbine operating 2.5 rpm under a free-stream of 10 m/s. Computed flow of the uncontrolled case characterized massive separation from near the leading edge due to high angle of attack. With the active flow control by a dielectric barrier discharge plasma actuator, separation was reduced and the lift-to-drag ratio increased from 2.25 to 6.52. Impacts of the plasma actuator on the shear layer near the leading edge were discussed. Direct momentum addition provided by the case setup of plasma actuator considered in current study seemed to be a dominant factor to prevent the separation of shear layer near the leading edge rather than influence of small disturbances induced by the plasma actuator operated in a burst modulation. However, due to the high angle of attack and the thick airfoil, the control authority of the plasma actuator with the setup (i.e. the operating condition and number of plasma actuators installed on the wing surface) considered was insufficient to completely suppress the separation over the NREL S825 airfoil.
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Alves, Andre L. R., and Theodoro A. Netto. "Instantaneous Probability of Uncontrolled External Leakage During the Production Phase of a Subsea Well." In ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/omae2013-10558.

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This work develops a methodology for evaluating the uncontrolled external leakage probability of a subsea well during the production phase. Based on a barrier diagram, an algorithm for possible leak paths identification is proposed, considering different operation modes: gas lift operation, free flowing or well closed at the subsea Xmas Tree. Considering the equivalency between these paths and the minimum cut sets from a fault tree modeling, the uncontrolled external leakage probability is calculated using the upper bound approximation. The effect of common cause failures is considered for the failure mode fail-to-close-valve. The instantaneous availability function of each component is modeled to represent the maintenance strategy applied. Non repairable, repairable and periodically tested items are used. For the latter, a nomenclature to distinguish two subtypes is introduced: the PT-R and PT-NR models, respectively Periodically Tested Repairable, and Periodically Tested Non Repairable. Probability distributions parameters are roughly estimated in order to make a case study. The failure rate functions determined are used as input for the proposed model, regarding the following failure modes: fail-to-close, external-leakage, and internal-leakage at the closed position. The objective of this section is to adjust a Weibull distribution, eliminate the usual assumption of constant failure rate and account for eventual wear-out effects. Finally, instantaneous probability results and sensitivity analysis are demonstrated for a base case study. Parameters like time between tests, inspections, and component reliability are varied in order to identify the impact on the uncontrolled external leakage probability. Therefore, the main objective is to propose a model that could support decision making on the well integrity management system during the production phase of a subsea well. To make this possible, reliable input data should be further considered.
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Borthakur, Darshan Prakash, and Supriyo Das. "Understanding the Life and Ageing of XLPE Insulation considering Free Energy Barrier Concept." In 2019 IEEE 4th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON). IEEE, 2019. http://dx.doi.org/10.1109/catcon47128.2019.cn0029.

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Hammer, Aaron C., Tom D. Gonzalez, Herb P. Dhuet, Hege Andresen, Siv Merete M. Sunde, Elshan Jabrayilov, Iris Sok Yee Kam, and Torstein Tviet. "Development of API 11D1 and API 19AC Validation Grade V0 Barrier-Qualified Gravel Pack System for Troll Phase 3 Big-Bore, High-Rate Gas Completions on the Norwegian Continental Shelf." In SPE Offshore Europe Conference & Exhibition. SPE, 2021. http://dx.doi.org/10.2118/205403-ms.

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Abstract The Troll Phase 3 (TP3) wells were designed to enable high gas rates and sand free production for an expected lifetime of 40 years with a minimum pressure drop. By taking reservoir and production properties into account, open-hole gravel pack (GP) sand screens in the lower completion and big bore tubing in the upper completion were selected. To further reduce the pressure loss in the well, reduce rig time and cost, and reduce deployment risks, eliminating the intermediate completion was proposed. Traditionally, an intermediate completion is required to serve as a gas-tight barrier for running of the upper completion, mainly due to historical limitations of the GP extension (GP sleeve) not being a barrier qualified to API 19AC Validation grade V0 (referred to as V0 hereafter) after pumping sand slurry through it (post-erosion). An extensive qualification program was completed to qualify the GP system to API 11D1 and API 19AC V0 for use as a gas-tight barrier post-erosion. This allows the GP system to serve as a primary barrier while installing the upper completion and temporarily abandoning the well. The GP packer was qualified to API 11D1 V0 with the additional requirement to perform entire qualification in as-rolled casing and including a plug-in-tailpipe load case. The GP sleeve provided the most technically challenging requirements: a full-scale erosion test, immediate closure of the sleeve after pumping operation, followed by API 19AC Annex A V0 validation. Challenges were encountered trying to meet the rigorous V0 (zero bubble) acceptance criteria post-erosion. A significantly different approach was developed to achieve gas-tight performance in debris-laden environments. The new design successfully passed the post-erosion API 19AC V0 qualification to the full rating of the GP sleeve. The GP system development and qualification enabled the industry-first V0 post-erosion GP system for Equinor, which eliminates the need for an intermediate completion. This state-of-the-art gravel pack system enabled the simplified high gas rate, big-bore well design, not previously possible given well barrier considerations. The reduced pressure drop across the lower completion is expected to yield a higher gas production rate for the 40 years expected well life, contributing significant value to the TP3 project.
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Rinaldi, Claudia, and Marco Mandelli. "The Role of Diffusion and Oxidation Kinetics in a Coating Life Prediction Code: Application to Components." In ASME Turbo Expo 2009: Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-60063.

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Under the umbrella of an Italian R&D programme, furnace-cyclic tests of thermal barrier coating (TBC) specimens were carried out to study the coating/substrate interactions and to determine a quantitative description of the degradation as induced by diffusion and oxidation at the interface of TBC and the bond coat (BC). On the basis of these experiments a coating life prediction code was developed, which utilized two alternative approaches for the oxidation kinetics of BC: “phenomenological” oxidation law and “free kinetics” oxidation behaviour. In this paper, the capability is shown of the latter methodology to predict more reliably the oxide thickness, the formation of non alumina oxide and formation of Kirkendall voids. The model was tested for MCrAlY and MCrAlYRe bond coats deposited by different thermal spray processes on various alloys. Examples of predictions are shown together with some comparisons with the experimental findings on the exposed specimens or ex-service components. Finally the oxidation kinetics is discussed with regards to the influence of the presence of TBC on the oxidation process in BC, taking into consideration that alumina and Zirconia–Yttria properties and their interactions. The inverse problem solution (IPS) method was applied together with the developed code to estimate the local mean operating temperature on the component surface. Some examples of code application to ex-service components are also shown.
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Singha, Tripuresh Deb, Apurba Das, Gopal Agarwal, Tanmoy Bandyopadhyay, and Amit Karmakar. "Free Vibration Characteristics of Sandwich Conical Shells With FGM Face Sheets: A Finite Element Approach." In ASME 2019 Gas Turbine India Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gtindia2019-2545.

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Abstract This paper presents an analytical investigation on the free vibration characteristics of symmetric sandwich conical shell with functionally graded material (FGM) face sheets using finite element method. Sandwich-type structures offer higher stiffness to weight ratio with excellent thermal barrier in high temperature application extending the operational life of the component. The sandwich-type conical structure used in the advanced supersonic and hypersonic space vehicles. The material properties of FGM face sheets are considered to be varied in thickness direction as per simple power law distribution in terms of the volume fractions of the FGM constituents. The core layer is considered as homogeneous and made of an isotropic material (Titanium alloy-Ti–6Al–4V). A finite element method is used to reduce the governing equations of vibration problem. The QR iteration algorithm used to solve the standard eigen value problem for determine the natural frequencies. Convergence studies are performed in respect of mesh sizes to substantiate the accuracy of the proposed method. Computer codes developed to obtain the numerical results for the combined effects of twist angle and rotational speed on the free vibration characteristics of symmetric sandwich conical shell with FGM face sheets. A detailed numerical study is carried out to examine the influence of the sandwich plate type, volume fraction index on the free vibration characteristics. The typical mode shapes are also illustrated for different cases.
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Le-Naour, Frederic, Antoine Marret, Kenny MacLeod, Romain Vivet, and Ida Margaretha Aglen. "Electrical & Optical Double Barrier Qualification and Implementation on FENJA Electrically Trace Heated Pipe-in-Pipe Project." In Offshore Technology Conference. OTC, 2021. http://dx.doi.org/10.4043/31214-ms.

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Abstract This paper provides an overview of the work completed to design, qualify, manufacture and integrate electrical and optical double barrier penetrators with the Electrically Trace Heated Pipe-in-Pipe (ETH-PiP) as part of the Neptune Energy Fenja Development Project. Typical subsea penetrator systems in the oil and gas industry, such as pumps, compressors and X-trees are designed to be retrievable, to enable periodic refurbishment as well as providing the option for replacement, if required. However, the ETH-PiP architecture makes retrieval of system components complicated and uneconomical. Both the electrical and optical dual barrier penetrator system designs have to comply with a set of ETH-PiP specific criteria, such as to be maintenance free over a 25 years service life, prevent water ingress to the pipeline, provide pressure containment for operational media (in an unlikely scenario where the inner pipe bursts) and guarantee minimum footprint to allow an optimum integration onto the Pipeline End Termination (PLET) structure. In addition, the electrical system has to comply with a medium voltage rating (i.e. 5.0/8.7kV) to ensure a wide range of possible ETH-PiP architectures. The optical system has to maintain insertion loss below 0.5dB and a back reflection below -45dB to comply with the stringent requirements of distributed temperature monitoring sensor system over long distances. The qualification program of the electrical dual barrier penetrator system was performed in accordance with IEC 60502-4 and SEPS-SP-1001. A tailor made sequence had to be developed for the optical system, based on guidance from SEAFOM-TSD-01, considering that the system partly falls outside the associated standard application. The electrical dual barrier penetrator system qualification sequence was developed in two phases; firstly, the electrical transition contacts in the feedthrough chamber were qualified in accordance with IEC 60502-4 and secondly, four electrical double barrier penetrator prototypes were manufactured to allow the completion of the qualification sequence defined as per SEPS-SP-1001. The optical dual barrier penetrator system qualification employed the manufacturing of three prototypes to execute the pre-defined qualification sequence. Following the individual qualification of the electrical and optical dual barrier penetrator systems, subsequent welding and full-scale assembly trials were performed to ensure that the maximum allowable temperatures within the penetrators would not be exceeded during welding to the PLET, and to proof test the assembly procedure. Electrical verification testing was also undertaken during these trials to verify that the integrity of the penetrators had been maintained during the assembly and that the PLET arrangement did not give rise to any electrical stresses that could result in excessive deterioration of the penetrators. Integration of the four electrical and two optical dual barrier penetrator systems to the project PLET was completed in Q1 2020, with the actual subsea installation of the first ETH-PiP section including the PLET in Q3 2020.
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Su, Ziyi, Kazuaki Inaba, Amit Karmakar, and Apurba Das. "Free Vibration and Thermal Fluid Structure Interaction Simulation of Functionally Graded Pipe by Modeling As Layered Structure." In JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/lemp2020-8506.

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Abstract Functionally graded materials (FGMs) are advanced class of composite materials which can be used as the thermal barrier to protect inner components from the outside high temperature environment. In FGMs, the volume fraction of each constituent can be tailored made across the thickness for desired applications. In this work, the simulation of FGMs in pipes is considered. Despite the wide application of pipes in machinery, those pipes would suffer from many safety problems, such as thermal stress, cavitation, fracture etc. Application of FGMs to the piping systems could lead to some new solutions accounting for safety measures and higher service life. However, the complex phenomena within the fluid structure interaction are hard to describe with the theoretical solution. The visualization of results from simulation will be helpful in understanding the distribution of kinds of physical quantities within the concerned model. For the simulation, FGMs are modeled as the layered structure in the standard finite element method (FEM) package based on FGM constituent law. The free vibration of the FG pipe is simulated and the accuracy of layered model is verified by numerical calculations. Further, based on the layered model, conjugate heat transfer simulations in a heat exchanger with FGMs are conducted.
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Hsieh, Hsuan-Tsung Sean, Ning Li, Yitung Chen, Kenny Kwan, Jen-Yuan Huang, and Changyeol Lee. "Knowledge-Based Information Resource Management System for Materials of Fast Reactors." In 17th International Conference on Nuclear Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/icone17-75485.

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In the development of advanced fast reactors, materials and coolant/material interactions pose a critical barrier for higher temperature and longer core life designs. For advanced burner reactors (sodium cooled), experience has shown that the qualified structural materials and fuel cladding severely limits the economic performance. In other liquid metal cooled reactor concepts, advanced materials and better understanding and control of coolant and materials interactions are necessary for realizing the potentials. Researches from universities, national laboratories and related industrial participants have been continuously generating invaluable data and knowledge about materials and their interactions with coolants in the past few decades. Under the consideration of cost and time constraints, the paradigm of designing and implementing a successful Gen IV Nuclear Energy Systems can be shifted and updated via the integration of information and internet technologies. Such efforts can be better visualized by implementing collective (centralized or distributed) data storages to serve the community with organized material data sets. Material property data provided by MatWeb.com and the ongoing development of web-based GEN IV material handbook are few examples. From system design perspective, sodium-cooled fast reactor (SFR) proposed in the GEN IV system have been significantly developed. According to the GEN IV ten-year program plan, current R&D work will be pointed to demonstration of the design and safety characteristics, and design optimization. All of those activities follow the path of data generation, analysis, knowledge discovery and finally decision making and implementation. We are proposing to create a modularized web-based information system with models to systematically catalog existing data and guide the new development and testing to acquire new data. Technically speaking, information retrieval and knowledge discovery tools will be implemented for researchers with both information lookup options from material database and technology/development gap analysis from intelligent agent and reporting components. The goal of the system is not only to provide another database, but also to create a sharable and expandable platform-free, location-free online system for research institutes and industrial partners.
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