The Experts below are selected from a list of 312 Experts worldwide ranked by ideXlab platform
En Sup Yoon - One of the best experts on this subject based on the ideXlab platform.
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a web based interactive virtual laboratory system for Unit Operations and process systems engineering education issues design and implementation
Computers & Chemical Engineering, 2002Co-Authors: Dongil Shin, En Sup YoonAbstract:The development of real educational content and customized virtual education systems satisfying the needs of a specific engineering education domain is getting more and more research attention in this era of ubiquitous Web and virtual technologies. By analyzing the characteristics of computer-based educational methods and adopting the rapidly changing Internet and object component technologies, we have developed a Web-based, interactive virtual laboratory system for Unit Operations and process systems engineering education, and validated its effectiveness by surveying student users of the implemented prototype system. In this paper, we also discuss many technical issues in building Web-based interactive virtual education systems and share the experience obtained. The proposed system is expected to overcome many obstacles in performing the Unit Operations laboratory in the current setting. More teachware and experiment suites are being added for more extensive, quantitative evaluation of educational efficiency of the proposed methodology and the system.
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web based interactive virtual laboratory system for Unit Operations and process systems engineering education
Computers & Chemical Engineering, 2000Co-Authors: Dongil Shin, En Sup Yoon, Sang Jin ParkAbstract:Abstract The development of the real educational contents and customized virtual education satisfying the needs of specific engineering education domain is getting more and more research attention in this area of Web and virtual technologies. By analyzing the characteristics of computer-based educational methods and using the rapidly changing Internet and object technologies, we developed a Web-based, interactive virtual laboratory system of Unit Operations and process systems engineering education. The proposed system is expected to overcome many obstacles in performing the Unit Operations laboratory at the current setting. More teachwares and experiments suites are being added for the extensive, quantitative evaluation on educational efficiency of the proposed system, and the result will be reported at the conference.
Dongil Shin - One of the best experts on this subject based on the ideXlab platform.
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a web based interactive virtual laboratory system for Unit Operations and process systems engineering education issues design and implementation
Computers & Chemical Engineering, 2002Co-Authors: Dongil Shin, En Sup YoonAbstract:The development of real educational content and customized virtual education systems satisfying the needs of a specific engineering education domain is getting more and more research attention in this era of ubiquitous Web and virtual technologies. By analyzing the characteristics of computer-based educational methods and adopting the rapidly changing Internet and object component technologies, we have developed a Web-based, interactive virtual laboratory system for Unit Operations and process systems engineering education, and validated its effectiveness by surveying student users of the implemented prototype system. In this paper, we also discuss many technical issues in building Web-based interactive virtual education systems and share the experience obtained. The proposed system is expected to overcome many obstacles in performing the Unit Operations laboratory in the current setting. More teachware and experiment suites are being added for more extensive, quantitative evaluation of educational efficiency of the proposed methodology and the system.
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web based interactive virtual laboratory system for Unit Operations and process systems engineering education
Computers & Chemical Engineering, 2000Co-Authors: Dongil Shin, En Sup Yoon, Sang Jin ParkAbstract:Abstract The development of the real educational contents and customized virtual education satisfying the needs of specific engineering education domain is getting more and more research attention in this area of Web and virtual technologies. By analyzing the characteristics of computer-based educational methods and using the rapidly changing Internet and object technologies, we developed a Web-based, interactive virtual laboratory system of Unit Operations and process systems engineering education. The proposed system is expected to overcome many obstacles in performing the Unit Operations laboratory at the current setting. More teachwares and experiments suites are being added for the extensive, quantitative evaluation on educational efficiency of the proposed system, and the result will be reported at the conference.
Murat Diker - One of the best experts on this subject based on the ideXlab platform.
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Textural Unit Operations in rough set theory
Information Sciences, 2017Co-Authors: Murat Diker, Ayşegül Altay Uğur, Sadık BayhanAbstract:Abstract In this study, we introduce a textural counterpart of the Unit operation of Wybraniec-Skardowska. A Unit di-operation has two parts which are called a Unit co-operation and a Unit operation, respectively. In this respect, we have two types of symmetry. We show that the symmetricity of direlations is equivalent to the Galois connectivity of Unit di-Operations. For discrete textures, we determine the image co-operation of a Unit co-operation. We prove that the symmetricity and duality are equivalent concepts for Unit di-Operations if one of the compounds is symmetric. We consider definability in terms of Unit Operations and Unit co-Operations. Further, we present a categorical discussion defining a category UN whose structures of objects are Unit Operations. We show that the category Rel whose objects are approximation spaces and morphisms are relation preserving functions can be embedded into UN .
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textures and fuzzy Unit Operations in rough set theory an approach to fuzzy rough set models
Fuzzy Sets and Systems, 2017Co-Authors: Murat DikerAbstract:Abstract In this paper, an approach for the fuzzy rough set models is presented using textures and a fuzzy version of the Unit Operations of Wybraniec-Skardowska. First, a fuzzy Unit operation and fuzzy Unit co-operation on fuzzy lattices are defined. It is proved that the well-known fuzzy rough set upper approximations as the approximation of Dubois and Prade are fuzzy Unit operation. Using fuzzy direlations, an axiomatic system for fuzzy Unit Operations is studied and it is shown that fuzzy rough set systems obtained by different fuzzy logical connectives as Kleene-Dienes and Godel implicators can be generated by the same textural fuzzy direlation. Finally, it is observed that the approximations of two different fuzzy rough set models together constitute two different Galois connections.
Thirumalachari Ramasami - One of the best experts on this subject based on the ideXlab platform.
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Sono-leather technology with ultrasound: A boon for Unit Operations in leather processing - review of our research work at Central Leather Research Institute (CLRI), India
Ultrasonics Sonochemistry, 2009Co-Authors: Venkatasubramanian Sivakumar, Paruchuri Gangadhar Rao, Gopalaraman Swaminathan, Thirumalachari RamasamiAbstract:Ultrasound is a sound wave with a frequency above the human audible range of 16 Hz to 16 kHz. In recent years, numerous Unit Operations involving physical as well as chemical processes are reported to have been enhanced by ultrasonic irradiation. There have been benefits such as improvement in process efficiency, process time reduction, performing the processes under milder conditions and avoiding the use of some toxic chemicals to achieve cleaner processing. These could be a better way of augmentation for the processes as an advanced technique. The important point here is that ultrasonic irradiation is physical method activation rather than using chemical entities. Detailed studies have been made in the Unit Operations related to leather such as diffusion rate enhancement through porous leather matrix, cleaning, degreasing, tanning, dyeing, fatliquoring, oil-water emulsification process and solid-liquid tannin extraction from vegetable tanning materials as well as in precipitation reaction in wastewater treatment. The fundamental mechanism involved in these processes is ultrasonic cavitation in liquid media. In addition to this there also exist some process specific mechanisms for the enhancement of the processes. For instance, possible real-time reversible pore-size changes during ultrasound propagation through skin/leather matrix could be a reason for diffusion rate enhancement in leather processing as reported for the first time. Exhaustive scientific research work has been carried out in this area by our group working in Chemical Engineering Division of CLRI and most of these benefits have been proven with publications in valued peer-reviewed international journals. The overall results indicate that about 2-5-fold increase in the process efficiency due to ultrasound under the given process conditions for various Unit Operations with additional benefits. Scale-up studies are underway for converting these concepts in to a real viable larger scale operation. In the present paper, summary of our research findings from employing this technique in various Unit Operations such as cleaning, diffusion, emulsification, particle-size reduction, solid-liquid leaching (tannin and natural dye extraction) as well as precipitation has been presented. © 2008 Elsevier B.V. All rights reserved.
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sono leather technology with ultrasound a boon for Unit Operations in leather processing review of our research work at central leather research institute clri india
Ultrasonics Sonochemistry, 2009Co-Authors: Venkatasubramanian Sivakumar, Gopalaraman Swaminathan, Thirumalachari RamasamiAbstract:Abstract Ultrasound is a sound wave with a frequency above the human audible range of 16 Hz to 16 kHz. In recent years, numerous Unit Operations involving physical as well as chemical processes are reported to have been enhanced by ultrasonic irradiation. There have been benefits such as improvement in process efficiency, process time reduction, performing the processes under milder conditions and avoiding the use of some toxic chemicals to achieve cleaner processing. These could be a better way of augmentation for the processes as an advanced technique. The important point here is that ultrasonic irradiation is physical method activation rather than using chemical entities. Detailed studies have been made in the Unit Operations related to leather such as diffusion rate enhancement through porous leather matrix, cleaning, degreasing, tanning, dyeing, fatliquoring, oil–water emulsification process and solid–liquid tannin extraction from vegetable tanning materials as well as in precipitation reaction in wastewater treatment. The fundamental mechanism involved in these processes is ultrasonic cavitation in liquid media. In addition to this there also exist some process specific mechanisms for the enhancement of the processes. For instance, possible real-time reversible pore-size changes during ultrasound propagation through skin/leather matrix could be a reason for diffusion rate enhancement in leather processing as reported for the first time. Exhaustive scientific research work has been carried out in this area by our group working in Chemical Engineering Division of CLRI and most of these benefits have been proven with publications in valued peer-reviewed international journals. The overall results indicate that about 2–5-fold increase in the process efficiency due to ultrasound under the given process conditions for various Unit Operations with additional benefits. Scale-up studies are underway for converting these concepts in to a real viable larger scale operation. In the present paper, summary of our research findings from employing this technique in various Unit Operations such as cleaning, diffusion, emulsification, particle-size reduction, solid–liquid leaching (tannin and natural dye extraction) as well as precipitation has been presented.
Kurt Brorson - One of the best experts on this subject based on the ideXlab platform.
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analysis of viral clearance Unit Operations for monoclonal antibodies
Biotechnology and Bioengineering, 2010Co-Authors: George Miesegaes, Scott Lute, Kurt BrorsonAbstract:Demonstration of viral clearance is a critical step in assuring the safety of biotechnology products. We generated a viral clearance database that contains product information, Unit operation process parameters, and viral clearance data from monoclonal antibody and antibody-related regulatory submissions to FDA. Here we present a broad overview of the database and resulting analyses. We report that the diversity of model viruses tested expands as products transition to late-phase. We also present averages and ranges of viral clearance results by Protein A and ion exchange chromatography steps, low pH chemical inactivation, and virus filtration, focusing on retro- and parvoviruses. For most Unit Operations, an average log reduction value (LRV, a measure of clearance power) for retrovirus of >4 log10 were measured. Cases where clearance data fell outside of the anticipated range (i.e., outliers) were rationally explained. Lastly, a historical analysis did not find evidence of any improvement trend in viral clearance over time. The data collectively suggest that many Unit Operations in general can reliably clear viruses. Biotechnol. Bioeng. 2010;106: 238–246. Published 2010 Wiley Periodicals, Inc.
