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Auswahl der wissenschaftlichen Literatur zum Thema „Floor conveyor“
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Zeitschriftenartikel zum Thema "Floor conveyor"
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Srinivasan, L. "Design and Fabrication of Floor Conveyor." Applied Mechanics and Materials 110-116 (October 2011): 4795–98. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.4795.
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In most of the companies heavy loads were moved either with help of cranes or conveyors. The conveyors are cheaper and it is suitable for small scale industries. These conveyors are constrained and can move the load in only one direction. In this project an effort has been put forth to design a multidirectional conveyor with help of ball bearings which can handle the load at different directions. Floor conveyor consists of ball bearings & shaft that makes the load to move at any directions. In olden days logs were used to move heavy loads from one place to another we developed those concept further and found conveyors, further improvement leads to the floor conveyor with multidirectional movement. Multidirectional is achieved by amalgamation of two ball bearings which is connected by a small shaft.
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Silva, Daniel Corrêa da, Carlos Eduardo Soares Maia, Letícia Ali Figueiredo Ferreira, Ana Carla De Souza Gomes dos Santos, and Genildo Nonato Santos. "Efficient setup of the belt conveyor speed through of templates." Independent Journal of Management & Production 11, no. 5 (2020): 1565. http://dx.doi.org/10.14807/ijmp.v11i5.1284.
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It is not obvious to adjust the speed of a conveyor belt so that it is possible to optimize the transport for each piece conveyed even with various studies presented in this area. The complex methodologies that are shown and the many adaptations indicated in these studies may contribute to the low adoption of these configurations. A study made, in this work, from videos of advertisements showing belt conveyor in operating on the factory floor which presented only 44% efficiency. In this work, it was shown, through theoretical studies, a mathematical model that presents the relationship between the speed and the transport capacity of conveyor belts. Based on a model, a graphical method (using templates) has been proposed that helps in choosing the conveyor belt speed for most efficient configurations that can be identified and adopted simply and without many adaptations to the system as a whole.
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Ariff, Tasnim F., Muhd Fahmi B. Jusoh, Malek Parnin, and Mohd Hanif Azenan. "Improving Efficiency and Enhancing Productivity in Transporting Fertilizers by Using Conveyor Belt Cleaners." Advanced Materials Research 1082 (December 2014): 505–10. http://dx.doi.org/10.4028/www.scientific.net/amr.1082.505.
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Conveyor belts are used widely to carry and transport various materials ranging from fertilizers to foods items from the cargo ship to the packaging site. Spillage and carryback problems are common issues relating to transportaion of these types of materials at Malaysian ports. This leads to lots of wastage in fertilizers and food. In addition, extra manual labour work is required to shovel the spillage into the container. This raises the concern of hygiene especially when relating to food items. Furthermore, improper washing and drainage system has also lead to corrosion on the floor. This has resulted in a lot of inefficient work and lack in productivity in the material handling system. Therefore, in order to solve this problem, primary and secondary belt cleaners were designed using CATIA software. These newly improved simple and cost effective designs of the primary and secondary belt cleaners together with a spray shaft and efficient washing box were fabricated, tested and implemented successfully. The spillage was eliminated and with the new washing system, corrosion on the floor can be prevented from occuring in the future.
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RIVERA-BETANCOURT, MILDRED, STEVEN D. SHACKELFORD, TERRANCE M. ARTHUR, et al. "Prevalence of Escherichia coli O157:H7, Listeria monocytogenes, and Salmonella in Two Geographically Distant Commercial Beef Processing Plants in the United States†." Journal of Food Protection 67, no. 2 (2004): 295–302. http://dx.doi.org/10.4315/0362-028x-67.2.295.
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For two large beef processing plants, one located in the southern United States (plant A) and one located in the northern United States (plant B), prevalence of Escherichia coli O157:H7, Listeria spp., Listeria monocytogenes, and Salmonella was determined for hide, carcass, and facility environmental samples over the course of 5 months. The prevalence of E. coli O157: H7 (68.1 versus 55.9%) and Salmonella (91.8 versus 50.3%) was higher (P < 0.05), and the prevalence of Listeria spp. (37.7 versus 75.5%) and L. monocytogenes (0.8 versus 18.7%) was lower (P < 0.05) for the hides of cattle slaughtered at plant A versus plant B. Similarly, the prevalence of Salmonella (52.0 versus 25.3%) was higher (P < 0.05) and the prevalence of Listeria spp. (12.0 versus 40.0%) and L. monocytogenes (1.3 versus 14.7%) was lower (P < 0.05) for the fence panels of the holding pens of plant A versus plant B. The prevalence of E. coli O157:H7 (3.1 versus 10.9%), Listeria spp. (4.5 versus 14.6%), and L. monocytogenes (0.0 versus 1.1%) was lower (P < 0.05) for preevisceration carcasses sampled at plant A versus plant B. Salmonella (both plants), Listeria spp. (plant B), and L. monocytogenes (plant B) were detected on fabrication floor conveyor belts (product contact surfaces) late during the production day. For plant B, 21 of 148 (14.2%) late-operational fabrication floor conveyor belt samples were L. monocytogenes positive. For plant B, E. coli O157:H7 and L. monocytogenes were detected in preoperational fabrication floor conveyor belt samples. Overall results suggest that there are regional differences in the prevalence of pathogens on the hides of cattle presented for harvest at commercial beef processing plants. While hide data may reflect the regional prevalence, the carcass data is indicative of differences in harvest practices and procedures in these plants.
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KOIDIS (Π. ΚΟΙΔΗΣ), P., and M. BORI (Μ. ΜΠΟΡΗ). "Isolation of Salmonella from the egg-laying producing plant." Journal of the Hellenic Veterinary Medical Society 50, no. 3 (2018): 238. http://dx.doi.org/10.12681/jhvms.15716.
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In the present paper, the presence of Salmonella spp. in the egg-laying hens producing plants in Thessaloniki area was studied. In total, 2.230 eggshell samples, 588 samples surfaces from floor, walls, conveyor belts, utensils and packaging areas, 168 feed samples and 68 water samples were examined. The survey showed that the rate of contamination in the eggshells was 0.29-3.29% (mean value 1.65%). The contamination rate of the surrounding area of the cages (floor, walls, conveyor belts) and the surfaces in the packaging areas were 6.81% and 7.58% respectively. The feed was contaminated at a rate of 0-6.6% (mean value 4.2%), while all the water samples were free of Salmonella spp. Eighty-six strains of Salmonella were isolated belonging to the S. enteritidis serotype (76.8%), S. bredeney (20.29%) and S. Heidelberg (2,3%). The high prevalence of S. enteritidis, in contrast to the other serotypes, isolated from the eggshells, from the area of the egg producing plants and the feed, showed that strict preventive measures should be applied for the protection of public health and the avoidance of dispersion of Salmonella in the environment.
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Usman, Shaban, Hai Tao Zhu, and Mazhar Ul Haq. "Design Improvement of Assembly Workplace through Ergonomic Simulation and Analysis Using DELMIA." International Journal of Engineering Research in Africa 21 (December 2015): 238–46. http://dx.doi.org/10.4028/www.scientific.net/jera.21.238.
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The aim of this research is to demonstrate the ergonomic process modeling and simulation of manual assembly work through virtual assembly approach in order to present workplace and process improvement prior to their physical prototyping. In this regard, a case study has been carried out to analyze an assembly workplace of a diesel engine by ergonomics simulation and virtual assembly approach. DELMIA, a software tool, has been exploited for the ergonomic simulation and analysis in virtual assembly environment. The case study demonstrates several improvements in the ergonomics of the operators performing assembly on production line of the diesel engine. The assembly process of last few stations of the diesel engine simulated and analyzed on DELMIA in order to exhibit the advantages of the virtual assembly approach to the workplace deign and saving of process time and energy expenditure of operator. On last station of the engine assembly line, parts are assembled relatively at higher and complex positions and it is difficult for an operator to assembly them. Since, the assembly is carried out on conveyor; it is not convenient to change the height of conveyor to overcome the problem. Therefore, height of the floor of last work station is altered / increased. In order to achieve the increased floor height, a number of benches of variable heights are placed on the floor on the last working station one by one in the simulation environment and simulation of the process is carried out. The simulation results show that the ergonomics of operators have significantly changed by altering working height of the operator. Simulation of second last and other working station has also been performed by altering the height of the floor, but no improvements in the ergonomics of the operator observed for these stations
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Xie, Jiacheng, Zhaojian Yang, Xuewen Wang, Shuping Wang, and Qing Zhang. "A Joint Positioning and Attitude Solving Method for Shearer and Scraper Conveyor under Complex Conditions." Mathematical Problems in Engineering 2017 (2017): 1–14. http://dx.doi.org/10.1155/2017/3793412.
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In a fully mechanized coal-mining face, the positioning and attitude of the shearer and scraper conveyor are inaccurate. To overcome this problem, a joint positioning and attitude solving method that considers the effect of an uneven floor is proposed. In addition, the real-time connection and coupling relationship between the two devices is analyzed. Two types of sensors, namely, the tilt sensor and strapdown inertial navigation system (SINS), are used to measure the shearer body pitch angle and the scraper conveyor shape, respectively. To improve the accuracy, two pieces of information are fused using the adaptive information fusion algorithm. It is observed that, using a marking strategy, the shearer body pitch angle can be reversely mapped to the real-time shape of the scraper conveyor. Then, a virtual-reality (VR) software that can visually simulate this entire operation process under different conditions is developed. Finally, experiments are conducted on a prototype experimental platform. The positioning error is found to be less than 0.38 times the middle trough length; moreover, no accumulated error is detected. This method can monitor the operation of the shearer and scraper conveyor in a highly dynamic and precise manner and provide strong technical support for safe and efficient operation of a fully mechanized coal-mining face.
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Wang, Kai, Yanli Huang, Huadong Gao, et al. "Recovery Technology of Bottom Coal in the Gob-Side Entry of Thick Coal Seam Based on Floor Heave Induced by Narrow Coal Pillar." Energies 13, no. 13 (2020): 3368. http://dx.doi.org/10.3390/en13133368.
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To improve the resource recovery efficiency of mining face in thick coal seams, the correlation between deformation failure of bottom coal in the gob-side entry and coal pillar width was analyzed by theoretical analysis, numerical calculation, and similar simulation experiments. The results showed that, when the coal pillar was strong, with the decrease of pillar width, the failure depth of the bottom coal in the gob-side entry and floor heave increased. The deformation failure depth of the bottom coal in the entry was inversely related to the width of the coal pillar. The bottom coal was further fractured and dispersed under the action of tension, shear, and extrusion in the process of floor heave. Based on the floor heave induced by the narrow coal pillar, a recovery technique of the bottom coal with thick coal seams in the gob-side entry was developed. The width of the narrow pillar to be reserved was obtained by theoretical calculation and revised by numerical simulation; ultimately, the reasonable width was determined. Under the complex stress of the narrow pillar, the bottom coal in the gob-side entry was fully heaved, cracked, and separated. To realize the comprehensive mechanization and resource recovery of bottom coal, a matching mining excavator loader, transfer conveyor, and retractable belt conveyor were selected to transport the crushed bottom coal in the entry. This method has been successfully applied to the return airway of working face 8407 in the No. 5 Coal Mine of Yangquan Coal Group with remarkable economic and social benefits.
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Li, Juanli, Yang Liu, Jiacheng Xie, Xuewen Wang, and Xing Ge. "Cutting Path Planning Technology of Shearer Based on Virtual Reality." Applied Sciences 10, no. 3 (2020): 771. http://dx.doi.org/10.3390/app10030771.
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With regards to the low degree of digitization, lack of real geological terrain, and low degree of automation in the cutting process of the traditional virtual fully mechanized mining face, we studied the key technologies of virtual operation and cutting path planning of the shearer on the three-dimensional (3D) roof and floor based on the virtual reality engine (Unity3D). Firstly, the virtual 3D coal seam was constructed through the 3D geological coordinate data of the mine. On this basis, the shape function of the scraper conveyor with the adaptive configuration on the floor was constructed to obtain the combined operation of the virtual shearer and the scraper conveyor. The movement of the shearer’s walking and height-adjustment was then, analyzed. A strategy for automatic height-adjustment based on the adjustment of the direction of the drum movement is hence, proposed to control the cutting path of the shearer. Finally, different experimental schemes were simulated in the developed prototype system after which each of the schemes was evaluated using the fuzzy comprehensive evaluation method. The results show that the proposed strategy for trajectory control can improve the accuracy and stability of the shearer’s motion trajectory. In Unity3D, the pre-selected schemes and digital and visual planning of coal production are previewed ahead of time, the whole production process can be mapped synchronously in the production process. It is also obtained that the virtual preview and evaluation of the production process can provide some guidance for actual production.
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Anjas Tambunan, Erwin Rozer Sitanggang, and Anggianika Mardhatillah. "Design of Vernis Sprayer Using Macroergonomic Analysis and Design." International Journal of Science, Technology & Management 1, no. 3 (2020): 251–55. http://dx.doi.org/10.46729/ijstm.v1i3.58.
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The process of spraying varnish is an important part of this industry but it still uses minimal tools so that this process has several obstacles, namely wasted time, unreliable work positions, frequent defects, and disturbed other work stations. To overcome this, a varnish sprayer has been designed, but there are still many things that need to be improved in terms of shape. The research was conducted at SMEs AAT RATTAN CHANDY CRAFT which is engaged in rattan handicrafts such as chairs, tables, serving covers. From the data obtained, 21 out of 28 people experienced complaints in the arms and hands due to less ergonomic work positions and tools. This study uses the Macroergonomic Analysis and Design method, in order to obtain a varnish spray design proposal in the form of a rectangular, faceted iron frame, the main drive of the dynamo (motor), the belt rope as a power connector, the conveyor as a spraying route, the spray gun as a sprayer. The dimensions of this varnish sprayer are 230 cm high, 200 cm wide and 500 cm long. In the proposed working method, there must be two operators, the first operator at the input door of the lifting tool and putting the product on the conveyor, the second operator receiving at the output door of the tool. This eliminates bending and squatting activities because the conveyor height is made as high as 137 cm from the floor surface.
Dissertationen zum Thema "Floor conveyor"
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Pacher, Ján. "Návrh konstrukce rozmetadla tuhých statkových hnojiv." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443173.
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The diploma thesis deals with the structural design of a solid manure spreader and the subsequent strength control of self-supporting construction. The introduction of the work consists of a research analysis of current design solutions of spreaders on the market with similar parameters as in the assignment. Subsequent chapters deal with the conceptual design of the spreader, preparation of the calculation model, suitable replacement of the components and evaluation of the strength analysis itself. The diploma thesis is accompanied by partial drawing documentation. The work was created in cooperation with ZDT Nové Veselí.
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Kupka, Filip. "Komíny s přirozeným tahem a připojování spotřebičů paliv." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2012. http://www.nusl.cz/ntk/nusl-225544.
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Diploma thesis deals with problematics of offtake of flue gasses. In experimental part there was measured compound of flue gasses by analyzator of flue gates. Aplication is a project of heating of object of The Academy of Sciences of the Czech Republic in Brno. Project solves design of heating system, flue and of source of heat. Heating area is created by floor convectors,towel rails and radiators. Source of heat is designed in two variants : as a cascade of condensation boilers and as a cascade of low-temperature boilers.
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Bernardo, André Gonçalo Antunes. "Modelação de sistemas AVAC para software de avaliação de desempenho em contexto de pré-projeto." Master's thesis, 2017. http://hdl.handle.net/10316/83343.
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Dissertação de Mestrado Integrado em Engenharia Mecânica apresentada à Faculdade de Ciências e Tecnologia<br>A utilização generalizada de sistemas de climatização para atingir as condições de conforto tem fomentado um aumento de consumo energético nos edifícios.A preocupação generalizada com a eficiência energética e o impacto ambiental levam à necessidade de fazerem-se escolhas que sejam melhores do ponto de vista ambiental, com o objectivo da melhoria do desempenho energético.Com vista a auxiliar as escolhas de melhoria do desempenho energético foi, encontra-se em desenvolvimento uma ferramenta protótipo dedicada ao desenho de plantas que integra a simulação dinâmica, permitindo assim estimar o consumo energético numa fase inicial do projeto.O objectivo deste trabalho foi implementar na referida ferramenta sistemas de climatização e avaliar o consumo energético e o conforto térmico oferecido por cada um dos sistemas. Os sistemas implementados foram o aquecimento por convetores, o aquecimento por piso radiante e o sistema de aquecimento e arrefecimento {\it multisplit}. Nesta dissertação é descrito a forma como foram implementados os sistemas, desde da seleção de objetos a modelar em simulação dinâmica, a parametrização dos sistemas na base de dados e programar no código da ferramenta as rotinas para inserir os sistemas de modo automático.Após a implementação dos sistemas, e para demonstrar a sua aplicação, foram realizados casos de estudo. Estes foram efetuados para dois edifícios unifamiliares gerados pela ferramenta, um com uma geometria em "L" e outro em "T", e testados em vários locais de Portugal. Os resultados obtidos foram utilizados para avaliar o conforto térmico, comparar o funcionamento e consumo de energia primaria dos sistemas implementados.<br>The widespread use of air conditioning systems to achieve the comfort conditions has encouraged an increase in energy consumption in buildings. The global concern about energy efficiency and environmental impacts lead judicious choices that are best economically and environmentally, with the aim of improving the building performance.In order to assist building practitioners in the improvement of the energy performance of buildings, it was developed a prototype tool dedicated to floor plan design that integrates dynamic simulation, allowing to estimate the energy consumption at an early stage of project design.The aim of this work is to implement HVAC systems in the tool and evaluate the energy consumption and the thermal comfort offered by each one of the systems. The systems implemented were the baseboard heating, the underfloor heating, and the multisplit system. In this dissertation is described how the systems were implemented, from the selection of objects to be modeled in dynamic simulation, parameterization of systems in the tool database, and the programming of routines in the tool for the automatic retrieval and implementation of the systems.After the implementation of the systems, case studies were carried out. These were corresponded to two single-family houses generated by the tool, one having a L-shape and the other T-shape geometry, in different climatic locations in Portugal. The results obtained were used to evaluate the thermal comfort, to compare the operation and primary energy consumption of the implemented systems.<br>Outro - Este trabalho tem o apoio da Fundação para a Ciência e Tecnologia (FCT) e do Fundo Europeu de Desenvolvimento Regional (FEDER) através do COMPETE -- Programa Operacional Competitividade e Internacionalização (POCI), no âmbito do projeto Ren4EEnIEQ (PTDC/EMS-ENE/3238/2014 e POCI-01-0145-FEDER-016760, respetivamente).
Buchteile zum Thema "Floor conveyor"
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Răileanu, Silviu, Theodor Borangiu, Nick Ivănescu, Octavian Morariu, and Florin Anton. "Integrating the Digital Twin of a Shop Floor Conveyor in the Manufacturing Control System." In Service Oriented, Holonic and Multi-agent Manufacturing Systems for Industry of the Future. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-27477-1_10.
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Broughton, Chad. "Boom Days in Appliance City." In Boom, Bust, Exodus. Oxford University Press, 2015. http://dx.doi.org/10.1093/oso/9780199765614.003.0004.
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Packing Insulation Was Mike Patrick’s first job at Midwest Manufacturing. He was one of 300 men, mostly young, hired in January 1959 to help Admiral, a Chicago-based company that owned the Galesburg factory, meet America’s seemingly insatiable postwar appetite for appliances. He had failed an eye test during the nurse’s exam at the factory and had to get glasses before he started. Patrick had suspected he needed glasses because he always had trouble seeing the chalkboard from the back of the room in high school. But because he was an athlete, he didn’t want to tie glasses around his head during basketball games. New hires got the nastiest, most grueling jobs, and stuffing insulation— which was like prickly cotton candy—into bare metal cabinets was one of them. The cabinets came from the metal-cutting area of the factory known as the “black line,” because the steel, darkened with oil, hadn’t yet been painted. The black line was the birthplace of these early Admiral refrigerators. Flatbed semis unloaded massive rolls of thick steel from Chicago—the plant used 10 rolls a day, 50 million pounds a year—that cutters and folding machines would shape into five sides. Gun welders then joined what would become the back, the two sides, and the top and bottom of the refrigerator. They left the door for later. The fused steel cabinet dangled from an overhead conveyor as it rode to the paint shop to be cleaned of its oily residue and painted. It would continue on the conveyor to a cabinet bank, where the empty cabinets gathered until they were needed on the line. When the scheduler called for them, men would slide the cabinets to the line across a concrete floor, which had been treated with a smooth, protective coating to prevent damage. A young man then spread scalding, gooey tar into the corners and up and down the creases of the bare metal cabinets. He shot the tar out of a pistol-gripped nozzle attached to a long canvas hose that he snaked in and around the metal shell.
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Nath, Renya N., N. Priya, and C. R. Rene Robin. "A Social Media Content Based Location and Situation Analysis Model for Disaster Management." In Emergency and Disaster Management. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-6195-8.ch014.
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Social media has evolved as an inseparable entity in everybody's life. People make use of social media like Face book, twitter, etc. to express their feelings. That's the reason organizations make use of social media information to infer the behavior of its users. The recent ChennaiRains2015 followed by Chennai flood show the reachability of social media as most of the people have utilized it to convey their status and requirements. Many people have utilized the same social media to express their willingness for providing help (food, shelter, evacuation and medical) to the flood victims. Connecting such people to the needy in a timely manner can make the disaster management process more efficient. In this paper, the authors highlight, (1) the design of Apache Storm based real time analytics of twitter data for extracting location and status of flood affected areas and (2) the development of an optimized map connecting the volunteers (people ready to help flood victims) and the flood victims who have raised their requests via social media.
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Silverman, Randy, Tomomi Nakashima, Jeffrey M. Hunt, and Joyce Tuia. "A Stitch in Time." In Advances in Library and Information Science. IGI Global, 2016. http://dx.doi.org/10.4018/978-1-4666-8624-3.ch010.
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A single fire, flood, or earthquake can irrevocably erode or destroy the ability of cultural property to convey meaning. Preventing collection damage of this type is far more cost effective than repairing it. This chapter addresses deliberate, incremental, and affordable approaches to minimizing potential collection risks. Hindsight provides 100% clarity about the difference small actions could have made before a damaging event occurs. True leadership is recognizing hypothetical problems and initiating timely actions that will prevent damage from occurring. The chapter includes nine case studies that provide achievable examples of strategies for mitigating fire, flood, and earthquake risks in libraries and other cultural institutions.
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Azzouni, Jody. "Usage Traps in the Language of Iterated Knowledge Attributions." In Attributing Knowledge. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780197508817.003.0006.
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How we easily slip between metacognitive thought and assertion and ground-floor thought and assertion is illustrated; how, as a result, we easily confuse the two is also illustrated. “Do you know the time?” is often speaker-meant merely as a request for information as opposed to what it literally conveys, a question about the auditor’s knowledge state. Distinctions between having concepts, grasping one’s own concepts, and metacognizing one’s propositional attitudes (in various ways) are distinguished. Why it is so easy to confuse being aware of being in pain and being in pain is explained; that it seems it isn’t possible to be in pain without being aware of it illustrates metacognitive confusions. Similarly, kinds of justifications are distinguished that are often confused, ones that involve metacognition and ones that don’t. How “level confusions” bedevil philosophical arguments is illustrated.
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Saunders, Jack. "‘The merits of Brother Worth’." In Waiting for the Revolution. Manchester University Press, 2018. http://dx.doi.org/10.7228/manchester/9781526113658.003.0006.
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Between 1968 and 1975, members of the Trotskyist Socialist Labour League, the International Socialists and the Militant Tendency held senior positions in factory union organisations at British Leyland factories in Birmingham, Solihull, and at Chrysler in Linwood and Coventry. This chapter consists of a detailed study of shop steward documents at Chrysler's engine factory in Stoke Aldermoor (Coventry), where the IS had a few dozen members, including Deputy Works Convenor John Worth. It looks at how politics affected IS members’ participation in everyday workplace life. Crucially, rather than looking at their contribution to shop-floor activism as an attempt to “import” ideas from outside the factory, I will show how radical militants were often politicised in ways that reflected feelings with wider resonance amongst their co-workers. The presence of an IS fraction within the plant contributed to the changing politics and social practices of the wider trade union movement within the factory, but was ultimately constrained by the constraints of working solely within the issues which the workforce defined as legitimately “industrial”.
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Yaniv, Bracha. "Dedication of Ceremonial Objects." In Ceremonial Synagogue Textiles, translated by Yohai Goell. Liverpool University Press, 2019. http://dx.doi.org/10.3828/liverpool/9781906764180.003.0007.
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This chapter explores 179 dedicatory inscriptions, which are grouped according to object, origin, and chronology and reflect customs relating to various aspects of the donation of the objects to the synagogue. It covers the dedicatory inscription on a ceremonial object donated to a synagogue that reflects the emotions and aspirations of the donor that conveys information relating to the event or person commemorated or honoured. It also explains how inscriptions can contribute significantly to the study of the community's customs, social life, and history. The chapter explores the tradition of having a dedicatory inscription that is known from ancient times, from inscriptions in the mosaic floors of synagogues. It also analyses the inscription of a name as a means of establishing the donor's rights that is mentioned in medieval halakhic sources.
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Haroutounian, Joanne. "Perspectives." In Kindling the Spark. Oxford University Press, 2002. http://dx.doi.org/10.1093/oso/9780195129489.003.0007.
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Four friends were observing the Grand Canyon for the first time—a geologist, an environmentalist, a photographer, and a poet. The geologist scientifically appraised the ancient formations of rock before him, examining and explaining fine details of this wondrous sight to his friends. The environmentalist stood close to the edge, peering into the canyon. She began a brisk dialogue with her scientific friend, pointing to different vegetation and the winding river in the canyon floor, explaining her views of the contextual changes of nature and its impact on the canyon. The photographer listened halfheartedly, busily clicking one shot after another, catching the changing light and shadow against the canyon walls. The poet listened attentively to the friendly scientific banter. She smiled while watching her photographer friend immersed in his work and sat quietly with pen and pad in hand, savoring the unique aesthetic experience. Four very different perspectives of the Grand Canyon—one analytically defined, one naturally developmental, one phenomenological, and one reflective. You observe this scene. You realize the value of each perspective of the Grand Canyon experience. You also are aware of the behavior of distinct personalities as they connect with the environment. Their views are specialized and focused to their particular interests. If you try to understand these perspectives and synthesize them with your own, you discover that you can enjoy a richer aesthetic awareness of the Grand Canyon. With imaginative juices in high gear, visualize the concept of musical talent as that vast Grand Canyon. Part I of this book offers unique perspectives of “what talent means” from specialists across different fields. The more specialized a person becomes in a respective field, the more a perspective becomes intensely focused and defined. The scientific psychometricians convey the importance of measuring music aptitude, the sensory base of musical talent. Developmental psychologists offer ideas about the growth of talent through musical learning. Performers and teachers of performers focus on the attributes of the talented performer. You may find the parameters of “talent” stretched in our discussions of musical creativity.
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Verschuur, Gerrit L. "The Killer Strikes." In Impact! Oxford University Press, 1996. http://dx.doi.org/10.1093/oso/9780195101058.003.0004.
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At the beginning of the nineteenth century, French paleontologist Baron Georges Cuvier recognized that many fossils represented the remains of species that no longer roamed the earth but were only to be found in certain rock strata. To convey what this discovery meant, he painted a vivid picture. “Life on earth,” he wrote, “has been frequently interrupted by frightful events.” A modern commentator, Derek Ager, likened the tale revealed by the fossil record to that of the life of a soldier: “Long periods of boredom and short periods of terror.” The periods of “boredom” are what we experience for most of our lives, when all is well with the world. That is the way we like it. The climate is benign and the seasons come and go in an endless and reassuringly predictable procession, and we survive nicely without being threatened by nature. Sometimes the spell is broken by a catastrophe; a tornado ripping at our house, a flood washing it away, or fire engulfing all in its path. After the terror has passed, all is peaceful again. Sixty-five million years ago a catastrophe of awesome proportions struck our planet. Something happened to wipe out the dinosaurs as well as about 60 percent of all species that lived at the time. After a century or more of sifting through incriminating evidence left at the scene of the crime, scientists have at last identified a comet or asteroid colliding with earth as the killer. The victims of this headlong collision on earth were felled by the devastating explosion of impact or killed in its aftermath. The comet impact of 65 million years ago was not the first of its kind, nor will it be the last. To appreciate how serious the danger is, let’s start with the dinosaurs. Their history has slowly and laboriously been pried from ancient rock and clay layers in which fossils are preserved. Fossilization happens to plants and animals whose remains sink into the muddy sediments at the bottom of oceans, seas, lakes, rivers, and streams where they are preserved in what will later become layers of rock.
Konferenzberichte zum Thema "Floor conveyor"
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Kupkovits, Robert, Eugenia Kennedy, and Jeffrey A. Kornuta. "Review of Risk and Assessment of Safety for Powered Conveyor Systems." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-71386.
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Conveyor systems are common mechanical handling equipment used throughout many industries to transport materials in various directions — horizontally, vertically, at an angle or around curves — and at various heights including floor-mounted and overhead systems. There are many types of conveyors including both powered and non-powered. Each type of conveyor presents its own unique sets of hazards. Although conveyors reduce injuries associated with manual material handling tasks, they can present a different set of hazards to those installing, operating or maintaining them. These hazards are typically associated with the powered mechanical motion of belts, shafts, sprockets, chains and various other subcomponents. Many industry standards are currently in use for conveyors, such as ASME B20.1, Safety Standard for Conveyors and Related Equipment. These industry standards address safe practices in the design, construction, installation, operation and maintenance of conveyor equipment. This paper will focus on identifying and defining the hazards associated with powered conveyor systems, reviewing workplace injury data for powered conveyors and comparing with data for nonpowered conveyors to better understand the trends, quantifying many of the risks associated with conveyors, and exploring and discussing the engineering and administrative controls currently available to address these hazards. A brief look at recent updates to some of the relevant standards will be presented to guide the discussion.
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Honegger, A., A. Tulsian, E. Creighton, A. Phillip, and D. Mukhopadhyay. "Development of a Small 5-Axis Micro-Milling Center for Parts Up to 100 mm in Diameter." In ASME 2010 International Manufacturing Science and Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/msec2010-34221.
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In this paper, the development of a small 5-axis machine tool (the Microlution 5100-S) for production-level micro-machining applications is presented. This machine is based on the concept that small parts should be manufactured on specially designed small machines, a.k.a. micro-machine tools (mMTs). The performance goals for this development effort were established as follows: ±1 micron linear positioning accuracy, capability to perform simultaneous 5-axis machining on parts up to 100 mm in diameter, maximum acceleration of 2g and a high-speed spindle with a maximum speed between 50,000 and 70,000 RPM. Additionally, this development is directed at addressing the needs of high-volume micro-machining applications. Hence, the machine required the development of a reliable, high-capacity tool-changer and compatibility with many productivity enhancing equipments viz. palette transfer robots and chip conveyors. Lastly the advantages of using this machine for miniature part production are presented with respect to savings in energy, increase in productivity and lowering of floor-space requirements.
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Schwartz, Mark P., and Thomas M. White. "Retrofit of the McKay Bay Waste-to-Energy Facility." In 10th Annual North American Waste-to-Energy Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/nawtec10-1003.
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This paper provides an overview of the City of Tampa’s 1,000-TPD, four-unit McKay Bay Facility which began operations as an incinerator in 1967; was upgraded to a waste-to-energy (WTE) facility (using waste heat boilers) in 1985; and then again retrofitted during a 33-month design, procurement, and construction period, from 1999 to 2001. As the selected project developer for this recent retrofit, Wheelabrator McKay Bay, Inc. (WMBI) chose to design new chute-to-stack units within the space constraints of the existing refuse feed chutes, ground floor slab and bottom ash conveyors. This paper identifies key plant statistics and describes the project scope, schedule, controls, and safety issues. Results of acceptance testing, including air emissions, are reviewed and compared against contractual and permit requirements. The unique challenges faced by the operations staff during the retrofit are discussed in detail. Several examples of “lessons learned” regarding design and operations are given.
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Talmon, Arno M., and Cees van Rhee. "Test Set-Up for Irregular Vertical Hydraulic Transport in Deep Ocean Mining." In ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2011. http://dx.doi.org/10.1115/omae2011-49375.
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The mining of scarce minerals from the sea-floor at the depths of several kilometers and bringing them to a processing plant at the ocean surface requires new techniques. Seafloor Massive Sulphide (SMS) deposits are known to have an extremely rich mineral content, and are considered technically-economically-environmentally feasible to explore. Vertical hydraulic transport is the link between the sea-floor mining and the maritime vessel where the first processing stage will take place. Clogging of any part of the vertical transport system is an absolute disaster. Fine particles are conveyed faster than coarse particles. High concentrations of fines cannot bypass high concentrations of coarse particles, hence these particle fractions accumulate, potentially blocking the pipe. Fundamental research into yet unexplored physics is necessary. Besides numerical flow simulations, it is necessary to conducted experiments on the transport over large vertical distances. Such tests aim to investigate the dynamic development of density waves consisting of different particle diameters and clogging phenomenon thereof. Different particle size fractions have to be followed in real time as they overtake each other, and change their shape, merge and segregate. It is however impossible to back-scale the prototype riser to a one-pass laboratory test set-up, but the process can be simulated by repeated flow through an asymmetric vertical pipe loop, where slurry flow in the upward leg represent vertical hoist conditions and the slurry is returned quickly via the downward leg. The particle accumulation process is allowed to take place in the upward leg whereas in the downward leg the restoring process is nearly neutralized. The development of accumulations in time (= distance traveled to the ocean surface) can be followed upon multiple passes of the solids batches through the upward leg. The novelty of the described testing method is that the essentials of fundamental processes occurring in long vertical stretches are quantified in a specially designed laboratory setup. Via subsequent implementation of the results in a numerical flow simulation, reliable transport scenarios can be delineated.
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Kazmer, David, Philip Barkan, and Kosuke Ishii. "Quantifying Design and Manufacturing Robustness Through Stochastic Optimization Techniques." In ASME 1996 Design Engineering Technical Conferences and Computers in Engineering Conference. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-detc/dac-1600.
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Abstract Critical design decisions are often made during the detailed design stage assuming known material and process behavior. However, in net shape manufacturing processes such as stamping, injection molding, and metals casting, the final part properties depend upon the specific tool geometry, material properties, and process dynamics encountered during production. As such, the end-use performance can not be accurately known in the detailed design stage. Moreover, slight random variations during manufacture can inadvertently result in inferior or unacceptable product performance and reduced production yields. These characteristics make it difficult for the designer to select the tooling, material, and processing details which will deliver the desired functional properties, let alone achieve a robust design which is tolerant to process variation. This paper describes a methodology for assessing the design/manufacturing robustness of candidate designs at the detailed design stage. In the design evaluation, the fundamental sources of variation are explicitly modeled and the effects conveyed through the manufacturing process to predict the distribution of end-use part properties. This is accomplished by utilizing optimization of manufacturing process variables within Monte Carlo simulation of stochastic process variation, which effectively parallels the industry practice of tuning and optimizing the process once the tool reaches the production floor. The resulting estimates can be used to evaluate the robustness of the candidate design relative to the product requirements and provide guidance for design and process modifications before tool steel is cut, as demonstrated by the application of the methodology for dimensional control of injection molded parts.
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Stelter, Nolan, Arnav Das, Zahra Hanifah, and Rizwan Uddin. "Dose Minimization Game for Smartphones." In 2018 26th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icone26-82450.
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Due to misconceptions surrounding radiation and nuclear energy, educating the general public about basic radiation concepts has become increasingly important. The Virtual Education and Research Laboratory (VERL) at the University of Illinois at Urbana-Champaign (UIUC) has developed a 3D, virtual, interactive game that conveys the physics of radiation and principles of radiation protection to the player. The model is a scavenger hunt style game that takes place in a virtual model of a TRIGA research reactor. Several virtual radiation sources are placed in the 3D virtual model of the TRIGA facility. Radiation drops away from the radiation source. The effect of shielding can also be incorporated in modeling the radiation transport, leading to realistic radiation fields. The user’s goal is to find and collect (virtual) objects placed in this facility while minimizing the dose received in doing so. The player is meant to learn about time, distance, and shielding — key concepts in radiation protection. The start screen displays the radiation field in the form of a colored coded floor, as well as the location of the desired objects. With the given information, the player is encouraged to plan the route to collect the items and minimize exposure. By repeatedly playing the game, the player becomes familiar with the layout of the facility, and of the location of the radiation sources. This educational game is a useful teaching tool. Those unfamiliar with radiation protection concepts are able to understand how important time, distance, and shielding are in minimizing dosage. Additionally, this game proves to be a useful engagement and outreach tool. Upon completion of the game, the user is shown the score, the dose received, as well as a list of dose received in well-known instances such as eating a banana or in getting an x-ray at the dentist’s office. The dose minimization game developed earlier for computers has now been developed for use as a game-app for cell phones. These recent developments allow for wider outreach, further increasing the use of the model as an outreach and educational tool.
Berichte der Organisationen zum Thema "Floor conveyor"
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Shipping department employee dies after falling into floor opening on conveyor line - Virginia, July 12, 1995. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 1995. http://dx.doi.org/10.26616/nioshface9515.
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