Industrial & Manufacturing Engineering eJournal最新文献

{"title":"An Advanced Class of Log-Type Estimators for Population Variance Using an Attribute and a Variable","authors":"Ch.Kusma Kumari, Ratan Kumar Thakur","doi":"10.34218/ijierd.11.1.2020.001","DOIUrl":"https://doi.org/10.34218/ijierd.11.1.2020.001","url":null,"abstract":"In this paper, a class of log-type estimator using the auxiliary information in form of attribute as well as variable is proposed. Double sampling technique has been considered as it is assumed that the auxiliary information about the auxiliary attribute as well as auxiliary variable is unknown. Bias and mean squared error has been found up to the first order of approximation. The proposed classes are compared to some commonly used estimators both theoretically as well as empirically and they perform better than commonly used estimators available in the literature.","PeriodicalId":319585,"journal":{"name":"Industrial & Manufacturing Engineering eJournal","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126228619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Discovering Business Processes from Email Logs using fastText and Process Mining","authors":"Yaghoub Rashnavadi, Sina Behzadifard, Reza Farzadnia, Sina Zamani","doi":"10.2139/ssrn.3671233","DOIUrl":"https://doi.org/10.2139/ssrn.3671233","url":null,"abstract":"Communication\u0000has never been more accessible than today. With the help of Instant messengers\u0000and Email Services, millions of people can transfer information with ease, and\u0000this trend has affected organizations as well. There are billions of\u0000organizational emails sent or received daily, and their main goal is to\u0000facilitate the daily operation of organizations. Behind this vast corpus of\u0000human-generated content, there is much implicit information that can be mined\u0000and used to improve or optimize the organizations’ operations. Business\u0000processes are one of those implicit knowledge areas that can be discovered from\u0000Email logs of an Organization, as most of the communications are followed\u0000inside Emails. The purpose of this research is to propose an approach to\u0000discover the process models in the Email log. In this approach, we combine two\u0000tools, supervised machine learning and process mining. With the help of supervised\u0000machine learning, fastText classifier, we classify the body text of emails to\u0000the activity-related. Then the generated log will be mined with process mining techniques\u0000to find process models. We illustrate the approach with a case study company\u0000from the oil and gas sector.","PeriodicalId":319585,"journal":{"name":"Industrial & Manufacturing Engineering eJournal","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126858883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mind the Gap: A Design for a New Energy Technology Commercialization Foundation","authors":"Jetta L. Wong, D. Hart","doi":"10.2139/ssrn.3905536","DOIUrl":"https://doi.org/10.2139/ssrn.3905536","url":null,"abstract":"The United States’ strong support for energy research and development (R&D) should position it well to lead the global energy transition. But the United States has difficulty moving new technologies from early discovery to scale. This gap in the nation’s energy innovation system could put the climate at risk by stalling the transition. It could also open the way for China and other countries to capitalize on U.S. investments. If key technologies are made overseas, the United States will lose out on many of the commercial opportunities the transition will create, and its national security could be compromised. A nonprofit Energy Technology Commercialization Foundation (ETCF), authorized by Congress to work closely with the U.S. Department of Energy (DOE), could help fill this gap by allowing energy innovators’ access to DOE’s tremendous technical expertise and world-class facilities, thereby helping them advance more quickly. It would encourage DOE-funded researchers to more aggressively seek commercial applications for their discoveries, and connect them with partners, funding, and tools to do so. These activities would be motivated by national and regional opportunities to develop globally scalable solutions to decarbonization challenges through collaborative partnerships with the private sector.","PeriodicalId":319585,"journal":{"name":"Industrial & Manufacturing Engineering eJournal","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127816941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hypothetical Yield Curve Scenarios for Credit Stress Testing","authors":"B. Desai, Kausick Saha","doi":"10.21314/jfmi.2019.120","DOIUrl":"https://doi.org/10.21314/jfmi.2019.120","url":null,"abstract":"Central counterparties (CCPs) use several extreme but plausible scenarios for assessing their credit exposures on account of member defaults under stressed market conditions. These stress testing results help in sizing the resources (also known as default waterfall resources) that could be required for mutualizing losses if low-probability, high-intensity events were to materialize. Stress testing also aids CCPs in assessing the adequacy of their prefunded default waterfall resources on a regular basis. In this paper, we discuss a set of hypothetical yield curve shift scenarios generated by applying extreme value distributions and a shaping procedure. These statistically derived hypothetical stress scenarios could be susceptible to model risk, leading to under- or overestimation of a CCP’s resource requirements. This paper highlights the merits of the model and its associated risks as well as the methods used for minimizing these model risks. The methodology has been developed by the Clearing Corporation of India Limited for stress testing its exposures in the government securities market. While modeling extreme movements of interest rate curves is not a new theme, we have attempted to present a procedure for deriving stress scenarios that can be applied to portfolios containing long and short positions in debt market securities of varying residual maturities.","PeriodicalId":319585,"journal":{"name":"Industrial & Manufacturing Engineering eJournal","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127099471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Determining the Strength and Thermal, Chemical Resistance of the Epoxy Polymer Composite Filled With Basalt Micro Nano Fiber in the Amount of 15–80% by Weight","authors":"D. Rassokhin, D. Starokadomsky, A. Ishchenko, O. Tkachenko, M. Reshetnyk, Lyudmyla Kоkhtych","doi":"10.15587/1729-4061.2020.200491","DOIUrl":"https://doi.org/10.15587/1729-4061.2020.200491","url":null,"abstract":"The possibility to obtain composites containing the micronano basalt fiber (MNBF) in the amount of 15‒80 % by weight has been experimentally demonstrated; it is distinguished by a series of improved properties such as strength, chemical and fire resistance. It has been shown that at average concentrations (up to 15 %) the properties of the composite differ slightly from the unfilled polymer (N-polymer). However, at 50 % by weight, and especially 80 % by weight, there are serious changes in the properties manifested by a profound change in the morphology, as confirmed by SEM-microscopy. It has been established that the introduction of microbasalt could increase strength at compression to 10 % (with a measurement error less than 5 %), and only at a very high filling in the amount of 80 % by weight. Strengthening the effect of microbasalt is expressed in an increase in the compression load of a composite aged in water and its elastic modulus up to 6–12 %. It has been determined that the drop in bending strength (by about 2 times) after filling is a tendency that is characteristic of almost all epoxy fillers. Basalt fiber was no exception. The natural exception is only those samples with basalt roving, which increase their strength at bending. At the same time, the high content (but not at 15 % by weight) has revealed an almost two-fold growth in the module at bending: higher for the composite with roving, which is very important from a practical point of view. Microbasalt filling reduces the rate and degree of swelling in 35 % Н 2 О 2 ‒ the more active the higher the percentage of filling. Visually, they demonstrate the signs of oxidation with peroxide (white); however, no significant destruction (as in acetone) has been detected. We have built the curves to estimate the degree of the polymer swelling. In addition, the swelling character of the composites with a high degree of filling, in the amount of 50 and 80 % by weight, has been investigated. The study results led to the conclusion of the degree of compaction of the structure of the composite and the increase in its resistance to aggressive environments through an increase in the share of the inorganic phase","PeriodicalId":319585,"journal":{"name":"Industrial & Manufacturing Engineering eJournal","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123952184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Secure OMP Based Pattern Recognition That Supports Image Compression","authors":"T. Nakachi","doi":"10.5121/sipij.2020.11202","DOIUrl":"https://doi.org/10.5121/sipij.2020.11202","url":null,"abstract":"In this paper, we propose a secure Orthogonal Matching Pursuit (OMP) based pattern recognition scheme that well supports image compression. The secure OMP is a sparse coding algorithm that chooses atoms sequentially and calculates sparse coefficients from encrypted images. The encryption is carried out by using a random unitary transform. The proposed scheme offers two prominent features. 1) It is capable of pattern recognition that works in the encrypted image domain. Even if data leaks, privacy can be maintained because data remains encrypted. 2) It realizes Encryption-then-Compression (EtC) systems, where image encryption is conducted prior to compression. The pattern recognition can be carried out using a few sparse coefficients. On the basis of the pattern recognition results, the scheme can compress selected images with high quality by estimating a sufficient number of sparse coefficients. We use the INRIA data set to demonstrate its performance in detecting humans in images. The proposal is shown to realize human detection with encrypted images and efficiently compress the images selected in the image recognition stage.","PeriodicalId":319585,"journal":{"name":"Industrial & Manufacturing Engineering eJournal","volume":"240 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116623789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance of Cylindrical and Planar Mesoscale Combustor With Double Narrow Slit Flame Holder for Micropower Generator","authors":"S. Adiwidodo, I. Wardana, L. Yuliati, M. N. Sasongko","doi":"10.15587/1729-4061.2020.198570","DOIUrl":"https://doi.org/10.15587/1729-4061.2020.198570","url":null,"abstract":"This research compared the performance of a cylindrical mesoscale combustor against two planar mesoscale combustors, which include the shape of the flame front, temperature of the combustor axis and the combustor wall, and the resulting flammability limit. The combustor used has a circular, square and rectangular cross-section. All three combustors have the same cross-section area and combustion chamber volume. The flame holder used is a double narrow slit. The fuel used is liquefied petroleum gas with a pure oxygen oxidizer. The experiment results showed that the cylindrical combustor produces a more even flame shape that fills the combustion chamber and there is no clear separation between the sides of the flame on each side of the narrow slit. A high ratio of the entrance to average velocity results in a large adverse pressure gradient which generates vortex and recirculation behind the flame holder which gives the mixture a longer chance in the combustion chamber (prolonged residence time). The flame front shape affects the temperature of the combustor axis. The flame front shape that fills the entire combustion chamber has a higher flame temperature than the separate flame front shape. The circular combustor has the highest average axis temperature, but it has the lowest combustor wall temperature. This fact shows that the circular combustor has the smallest heat loss from the flame to the combustor wall. Furthermore, a circular mesoscale combustor has the most extensive stability map. For the same volume, the circular combustor has a lower surface area to volume ratio, thus the heat loss is also low. The dead zone area also becomes narrower, only at a low reactant rate. Rectangular combustors have the largest surface area to volume ratio, thus the losses are also the biggest. Despite the narrowest flammability limits, rectangular combustors have the highest average wall temperatures","PeriodicalId":319585,"journal":{"name":"Industrial & Manufacturing Engineering eJournal","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122137476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and Implementation of Smart Blind Stick","authors":"Shubham Bele, Swapnil Ghule, Akshay Gunjal, Nitesh Anwat","doi":"10.2139/ssrn.3645413","DOIUrl":"https://doi.org/10.2139/ssrn.3645413","url":null,"abstract":"Independence is the building methodology in achieving dreams, goals, and objectives in life. Visually impaired persons find themselves challenging to go out independently. There are millions of visually impaired or blind people in this world who are always in need of helping hands. For many years the white cane became a well-known attribute to blind person’s navigation and later efforts have been made to improve the cane by adding remote sensors. Blind people have a big problem when they walk on the street or stairs using a white cane, but they have sharp haptic sensitivity. The electronic walking stick will help the blind person by providing a more convenient means of life. The main aim of this paper is to contribute our knowledge and services to the people of the blind and disable society.","PeriodicalId":319585,"journal":{"name":"Industrial & Manufacturing Engineering eJournal","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132196902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Determination of the Rational Number of Blades of the Centrifugal Wheel of a Submersible Pump","authors":"M. Isametova, D. Karaivanov, R. Nussipali","doi":"10.15587/1729-4061.2020.200998","DOIUrl":"https://doi.org/10.15587/1729-4061.2020.200998","url":null,"abstract":"The CAD/CAE/CAM method of end-to-end design of the impeller of a seven-stage submersible pump ODDESSEzentralasien –UPP 13-7/6 used for pumping sulfuric acid in hydrometallurgy is presented. The studies are conducted in order to increase the efficiency of the pump manufactured at the KARLSKRONA LC AB LLP plant (Kazakhstan). Computer calculations of the centrifugal wheel with 8 and 9 blades for strength were carried out in the NASTRAN top-level CAE system. The influence of the number of centrifugal wheel blades on the level of stresses arising in the sections of the blades of the cover and main centrifugal wheel discs is determined. The maximum stress in the sections of the wheel with 8 blades reached 319 MPa and the wheel with 9 blades 199 MPa. The influence of the number of blades on the dynamic characteristics of the rotor shaft is examined. To do this, design mechanical and computer schemes of dynamic calculation are simulated to determine the amplitude-frequency characteristics of the rotor shaft. The harmonics amplitudes at frequencies caused by liquid pulsation at the blade frequency of 400 Hz and 450 Hz reached 110 -4  m and 810 -4  m, respectively. Based on the results of computer modeling of static and dynamic problems, a model of the impeller of a centrifugal multistage pump with a rational number of 8 double curvature blades is developed. The choice of the number of blades meets the criterion of wheel strength and the dynamic criterion of the shaft-wheel system. For the production of the prototype wheel, an analysis of the process parameters of 3D printing in terms of surface roughness of finished products is carried out. Based on the analysis, stereolithography the technology is chosen and centrifugal wheels are printed for further bench hydrodynamic tests in a plant. The studies based on CAD/CAE/CAM computer modeling allow reducing the time and costs of developing a rational wheel geometry that meets the criterion of both the strength of the wheel itself and the criterion of vibration activity of the rotor shaft","PeriodicalId":319585,"journal":{"name":"Industrial & Manufacturing Engineering eJournal","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130697647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and Development of Biometric Enabled Advanced Voting System","authors":"A. Jatain","doi":"10.2139/ssrn.3670189","DOIUrl":"https://doi.org/10.2139/ssrn.3670189","url":null,"abstract":"The focus of this paper is to design and development of a biometric enabled biometric electronic voting machine. The proposed biometric electoral voting system allows the user to scan fingerprint and iris so that his or her credentials can be compared to existing fingerprint and iris images already stored in the system's database. Counting is going on right away, making the voting process more efficient, faster and safer. This system requires the identification of the voter Aadhaar card, the voter's thumb impression as well as the iris image. Voter's complete data, including all voters' fingerprint and iris image, is collected and stored in the database. While voting, the voter gives their Aadhaar card details and puts eye in front of the iris camera and finger inside a fingerprint scanner, the system looks for the seal already provided in the data base, and then compares the iris image to authenticate the voter's identity. If the data matches, the system commands the voter to vote through the electronic voting machine. If the fingerprints do not match, the voting presiding officer looks for the registration, or the iris image does not match after the fingerprint match, the voter is not allowed to vote, consider it vote rigging.","PeriodicalId":319585,"journal":{"name":"Industrial & Manufacturing Engineering eJournal","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132606467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}