IRPN: Innovation & Operations (Topic)最新文献

{"title":"Industrial measurements of the gas and temperature in Si and FeSi production process","authors":"M. Ksiazek, R. Saadieh, Heiko Gærtner, S. Grådahl, Bendik Sægrov, M. Tangstad, A. Valderhaug, E. Ringdalen","doi":"10.2139/ssrn.3922198","DOIUrl":"https://doi.org/10.2139/ssrn.3922198","url":null,"abstract":"The production process for silicon has been steadily improving with respect to health, safety and environmental aspects due to improved process understanding, process design and operation control. Nonetheless, a deeper understanding of the process dynamics with respect to the process gas within the furnace charge is required, especially focusing on composition and chemistry before combustion with ambient air in the off gas.This paper presents the results of industrial trials focusing on measuring the charge temperature and gas composition from Si and FeSi furnace. The two main goals of this research were to: a) verify a system designed to extract gaseous samples from the charge of SAF. b) analyse both temperature distribution and gas composition from Si and FeSi process.Temperatures inside and at the top of the charge differs significantly from place to place, and temperatures on top of the charge can be higher than inside. A Micro-GC was successfully used to measure the gas composition on- and inside the charge. Off- gas measurements were carried out during the campaign with a portable emission analyser.","PeriodicalId":105021,"journal":{"name":"IRPN: Innovation & Operations (Topic)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121059308","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":"Assessment of the Authenticity of a Semiempirical Turbulent Combustion Method in Afterburner of a Gas Turbine Engine","authors":"V. Loginov, V. Rublov, Аlexandr Yelansky","doi":"10.15587/2312-8372.2020.199964","DOIUrl":"https://doi.org/10.15587/2312-8372.2020.199964","url":null,"abstract":"The object of research is the working process of the afterburner of the combustion chamber of a turbojet dual-circuit engine with flow mixing. The research was aimed at developing a comprehensive methodology for calculating the afterburner-output device of a forced turbojet engine, taking into account the unevenness of the coefficient of oxygen excess and flow turbulence. To calculate the process of mixture formation, let’s use the model of the separate flow of the gas and liquid phases, taking into account the influence of finite transfer rates between the phases. The gas phase is calculated using a numerical method based on the Eulerian-Lagrangian approach, which allows one to calculate a three-dimensional compressible unsteady flow in an afterburner and is described by Navier-Stokes equations with Reynolds averaging and a one-parameter model of turbulent viscosity. The differential equations of the liquid phase are solved by the Runge-Kutta method. Accounting for turbulent combustion is carried out using the semi-empirical theory. The main indicator of the afterburner combustion chamber working process is the coefficient of completeness of combustion, on which the engine thrust during forced operation depends. To evaluate the combustion efficiency, the fields of velocity, temperature, pressure, mass fraction of oxygen, fuel vapor and pulsation velocity are calculated. These values are determined by numerical simulation of a two-phase flow. The work uses a model of the separate flow of the gas and liquid phases, taking into account the influence of finite transfer rates between the phases. Having data of numerical calculation and a semi-empirical model, let’s determine the completeness of fuel combustion, depending on the coefficient of excess air and the length of the combustion zone. The technique used in this work allows to calculate the completeness of fuel combustion in the afterburner, and the calculation results coincide with experimental data with an error of no more than 7%. Having data on the completeness of combustion, one can determine the thrust of the nozzle during forced operation of the engine.","PeriodicalId":105021,"journal":{"name":"IRPN: Innovation & Operations (Topic)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125350063","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":"Three Configurations of Corporate Innovation Programs and Their Interplay","authors":"Michael Kötting, Andreas Kuckertz","doi":"10.2139/ssrn.3735829","DOIUrl":"https://doi.org/10.2139/ssrn.3735829","url":null,"abstract":"\u0000Purpose\u0000The success of corporate innovation is based less upon the success of a single innovation program than on a holistic and overarching corporate innovation system integrating various activities. Taking this perspective, the purpose of this paper is to extend existing research on the design of innovation programs.\u0000\u0000\u0000Design/methodology/approach\u0000Utilizing an inductive theory-building case study approach, this study provides a detailed analysis of how one of the largest and most successful German technology companies structures its many innovation activities.\u0000\u0000\u0000Findings\u0000The analysis identifies key elements of innovation programs and suggests three configurations that illustrate how these generic elements can be structured so as to offer the best fit with the underlying logic of the respective innovation program. Furthermore, this study highlights how the identified configurations come together to deliver overarching strategic innovation goals.\u0000\u0000\u0000Originality/value\u0000Existing research too often focuses solely on single innovation programs. The current research is among the first to take a holistic and overarching perspective, considering different innovation programs within a single company and analyzing their configuration and their interplay.\u0000","PeriodicalId":105021,"journal":{"name":"IRPN: Innovation & Operations (Topic)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133548579","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":"Why We Care About Certified B Corporations: From Valuing Growth to Certifying Values","authors":"Joel Gehman, Matthew G. Grimes, Ke Cao","doi":"10.5465/AMD.2018.0074","DOIUrl":"https://doi.org/10.5465/AMD.2018.0074","url":null,"abstract":"This article is a commentary on \"The Impact of B Lab Certification on Firm Growth\" by Simon Parker, Edward Gamble, Peter Moroz, and Oana Branzei.","PeriodicalId":105021,"journal":{"name":"IRPN: Innovation & Operations (Topic)","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125512635","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":"How Research in Production and Operations Management May Evolve in the Era of Big Data","authors":"Q. Feng, J. Shanthikumar","doi":"10.2139/ssrn.3089257","DOIUrl":"https://doi.org/10.2139/ssrn.3089257","url":null,"abstract":"We are living in an era in which data is generated in huge volume with high velocity and variety. Big Data and technology are reshaping our life and business. Our research inevitably needs to catch up with these changes. In this short essay, we focus on two aspects of supply chain management, namely, demand management and manufacturing. We feel that, while rapidly growing research on these two areas is contributed by scholars in computer science and engineering, the developments made by production and operations management society have been insufficient. We believe that our field has the expertise and talent to push for advancements in the theory and practice of demand management and manufacturing (of course, among many other areas) along unique dimensions. We summarize some relevant concepts emerged with Big Data and present several prototype models to demonstrate how these concepts can lead to rethinking of our research. Our intention is to generate interests and guide directions for new research in production and operations management in the era of Big Data.","PeriodicalId":105021,"journal":{"name":"IRPN: Innovation & Operations (Topic)","volume":"3 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113957416","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":"Effect of E-Commerce on Organization Sustainability","authors":"Sanjay Chaudhary","doi":"10.2139/ssrn.2795411","DOIUrl":"https://doi.org/10.2139/ssrn.2795411","url":null,"abstract":"This paper establishes the relationship between e-commerce and sustainability factors in the business organizations. The author has also shown the medium to the high positive effect of e-commerce on a clear majority of twenty sustainability factors belonging to environmental, economic, social and general domains as per the opinion survey. Given the effect of e-commerce on sustainability factors, with an overall mean score of 3.61 out of the maximum rating of 5 in an opinion survey, consequently the respondent generally believes that the e-commerce does have a positive effect on the overall sustainability of an organization. The author suggests e-commerce as one the sustainability development measures that can be implemented by business organizations. The sustainability factors are arranged in the metrics, that can be adopted by a business manager for measuring the extent of the e-commerce effect on the sustainability of a business organization. E-commerce managers may also use the findings of this study to gain further insight into sustainability aspects of e-commerce activities. The author urges businesses to leverage e-commerce to create sustainable solutions that address customer, environmental and societal value expectations. The author has shown in the statistical analysis, that overwhelming majority of the sustainability factors (economic, environmental, social) is positively correlated with each other. Therefore, business practice shall be congruent and compatible with the business initiatives for environmental and social responsibility. Furthermore, the author urges businesses to leverage e-commerce not only for economic reasons, but these activities will also help meet environmental compliance.","PeriodicalId":105021,"journal":{"name":"IRPN: Innovation & Operations (Topic)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121661176","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":"Development of Framework for Predictive Maintenance in Indian Manufacturing Sector","authors":"N. Srivastava, S. Mondal","doi":"10.1504/IJSOM.2016.075764","DOIUrl":"https://doi.org/10.1504/IJSOM.2016.075764","url":null,"abstract":"Every machine degrades with time and requires maintenance. Among all types of maintenance policies, predictive maintenance is established as the best form of maintenance policy as numerous benefits are associated with it. Despite all the benefits, it finds restrictive usage in manufacturing companies. A literature survey reveals that limited funds is the major reason for restrictive usage of predictive maintenance, as predictive maintenance is capital intensive. In this paper, a predictive maintenance framework using predictive maintenance models with no investment on technology component is proposed for Indian manufacturing sector.","PeriodicalId":105021,"journal":{"name":"IRPN: Innovation & Operations (Topic)","volume":"337 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114240671","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":"Measuring the Benefit of Offering Auxiliary Services: Do Bag-Checkers Differ in Their Sensitivities to Airline Itinerary Attributes?","authors":"M. Nicolae, Mark E. Ferguson, L. Garrow","doi":"10.2139/ssrn.2724018","DOIUrl":"https://doi.org/10.2139/ssrn.2724018","url":null,"abstract":"When firms evaluate their service system design choices, there is typically more uncertainty surrounding the value that a particular auxiliary service provides than there is on the cost of providing that service. To help inform this decision, we propose an approach where we compare the relative value of the segment of passengers who use an auxiliary service to the segment that does not use it. We demonstrate this approach for a typical auxiliary service common to the airline industry. In 2008, most U.S. airlines implemented checked baggage fee policies to decrease their costs by reducing the number of customer service agents needed in the check-in and baggage handling processes. The success of this change has led to a current debate at many of these airlines on whether to make further staffing cuts in these areas, essentially making it even less attractive for passengers to check their baggage. Our proposed methodology helps answer whether passengers who continue to check bags in today’s baggage-fee era are more or less valuable than passengers who do not check bags. We explore this question empirically by examining, through a stated preference survey, if a history of checking or not checking bags can be used to segment passengers based on how their itinerary choices are influenced by common airline service attributes (price, number of connections, itinerary time, schedule delay, and on-time performance). Contrary to the opinions of some top airline executives, we find that the passengers who continue to check bags at airlines that charge baggage fees are generally less sensitive to differences in three of these important service attributes and are less likely to switch airlines when a competing airline improves its offerings along these dimensions. Thus, airlines that charge for checked bags should consider improving the customer experience for their bag-checking passengers, as they represent a potentially more valuable segment class to the airline.","PeriodicalId":105021,"journal":{"name":"IRPN: Innovation & Operations (Topic)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129123031","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":"Improving Service Levels through Reverse Factoring","authors":"Kasper van der Vliet, M. Reindorp, J. Fransoo","doi":"10.2139/ssrn.2694242","DOIUrl":"https://doi.org/10.2139/ssrn.2694242","url":null,"abstract":"Does 'reverse factoring' - a supply chain finance solution that has recently become popular in industry - allow for operational benefits? Are the benefits automatic, or do they need to be explicitly required in the reverse factoring arrangement? We explore these questions through a periodic review inventory model of a supplier (she) that serves demands of two corporate customers, A and B. The customers have the same payment term toward the supplier and the same minimum service level requirements, but customer A (he) can offer reverse factoring. The supplier chooses her base stock policy and internal cash retention policy in order to minimize her average total cost, while satisfying the customers' service level requirements. We use simulation-based optimization to determine the optimal policies and cost. Through numerical experimentation, we find that the supplier does not automatically offer a better service to customer A, but would rather collect any financial savings resulting from reverse factoring. These savings are however large enough that customer A can require a significant service level improvement. We find that the maximum improvement depends on the initial service level requirement, the demand uncertainty, the absolute difference between the supply lead time and the payment term, and the relative size of expected demand from customer A. Our work contributes to a better understanding of the operational dimensions of supply chain finance.","PeriodicalId":105021,"journal":{"name":"IRPN: Innovation & Operations (Topic)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132377069","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":"I Heard it Through the Grapevine: Market Control of Controlling Family Shareholders","authors":"André Jansson, Ulf Larsson-Olaison","doi":"10.1111/corg.12124","DOIUrl":"https://doi.org/10.1111/corg.12124","url":null,"abstract":"Manuscript Type. Empirical. Research Question/Issue. This paper addresses the issue of whether controlling family shareholders are exposed to market control. The paper advances the theory that the expected performance of controlling shareholders, inferred from their track records, is constantly reflected in the market value of controlled firms. Research Findings/Insights. By using event‐study methodology, we show that unexpected acts that are detrimental to minority shareholder interests performed by controlling family shareholders lead to short‐term negative abnormal returns in firms that otherwise are completely unaffected by the detrimental acts, but are controlled by the same family‐based business group. Theoretical/Academic Implications. The results shed new light on the significance of track records in corporate governance that have implications for research on informal corporate governance mechanisms, governance of family firms, and, possibly, comparative corporate governance. The results also have tentative implications for the understanding of the function of family‐controlled business groups consisting of industrially unrelated firms by suggesting a function that has heretofore been neglected. Practitioner/Policy Implications. The results have implications for reform work in corporate governance by showing that practitioners and regulators must consider variability in non‐legal corporate governance mechanisms when analyzing and attempting to change different national corporate governance systems to achieve desired effects.","PeriodicalId":105021,"journal":{"name":"IRPN: Innovation & Operations (Topic)","volume":"55 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113937164","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}