CompSciRN: Practical Computer Skills (Topic)最新文献

{"title":"One Semester, Two Languages: How to Teach R and Python to Business School Students?","authors":"Yuxing Yan","doi":"10.2139/ssrn.3885951","DOIUrl":"https://doi.org/10.2139/ssrn.3885951","url":null,"abstract":"It is crazy to teach business students both R and Python at the same time! It was my thought when asked to teach such a course in 2020. However, after one-semester’s heavy struggle together with my students, I found that such a course is not only possible, but also desirable. In this paper, my teaching experiences are summarized into several areas: 1) write my own lecture notes; 2) use concepts and formulae suitable for business students; 3) tons of in-class exercises; 4) use the same formulae, data sets or even the same exercises several times; 5) recording my own video for each chapter even for a face-to-face lecture; 6) over 1,000 small programs; 7) many useful utility functions, and 8) teach R first, then compare Python with R constantly.","PeriodicalId":205839,"journal":{"name":"CompSciRN: Practical Computer Skills (Topic)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125549736","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":"Collusion and Network Effects: Modeling the Dynamics of Single- and Multi-Sided Platforms","authors":"Rosa M. Abrantes-Metz, Albert D. Metz","doi":"10.2139/ssrn.3869687","DOIUrl":"https://doi.org/10.2139/ssrn.3869687","url":null,"abstract":"In this paper we apply a general model of one-sided and two-sided platform businesses to a collusive framework which we model as joint profit maximization. We have a particular interest in how the social loss and other metrics depend on the strength of the network (direct or indirect) effect. We study how network effects impact the optimal collusive configuration, how that configuration compares to socially optimal .configurations, and how the deadweight loss decomposes between market power and the unpriced network externality. We find that full collusion (in the sense of joint profit maximization, acting as one single firm) is unlikely to develop if network effects are even moderately strong, since the optimal configuration requires one of the platforms to either be very small or, usually, to shut down altogether. Of course it remains possible that other forms of mutually beneficial coordination might still obtain. We further find that even when able to perfectly price discriminate for or against multi-homing subscribers, neither colluders nor planners meaningfully benefit from that option.","PeriodicalId":205839,"journal":{"name":"CompSciRN: Practical Computer Skills (Topic)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129799674","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 Employability Skills among IT & Engineering Students","authors":"Prem Kamble","doi":"10.2139/ssrn.3777059","DOIUrl":"https://doi.org/10.2139/ssrn.3777059","url":null,"abstract":"This paper is about improving employability skills among youth, particularly among engineering students. It focusses on the skills required by industry, particularly the IT industry, and ways and means to develop those required skills among the students to make them more employable. It tries to bridge the gap between industry and academic institutions. This paper will benefit students from any stream who wish to make a career in IT. With the IT boom, quite a few students from all engineering streams chose a career in IT. Hence this paper should be relevant to all technical streams of engineering. Most Employability Trainings for college students focus on cosmetic improvements in presentation style, personality development, language skills, etc. to impress the interviewer. As a Senior IT professional who has over 30 years of industry experience, mostly as CIO, the author feels that these cosmetic attributes are less significant for candidates from technical streams like engineering, particularly for IT function. What is required and appeals the most to the interviewer is not his/her personality, not even the current technical knowledge. Appears strange when I exclude technical knowledge? The paper will soon reveal why. Having worked with and trained several youngsters on the job, the I can vouch that the industry needs different skills in this environment of rapid technological changes. The paper discusses what exactly those skills are. This paper presents a much better, interesting and effective way to make IT and other engineering students, more employable. The method described here not only makes them more employable for their first employment after college, but it also helps them to remain employable, skilled and relevant throughout their career. This paper tries to identify those skills and discuss why they are important. More significantly, the paper not only presents a strategy to develop those skills in students by catching them young but also shows how the strategy was practically implemented to ensure that the students benefited from the strategy. The training is now available to students and colleges with upgraded contents, mostly free of cost.","PeriodicalId":205839,"journal":{"name":"CompSciRN: Practical Computer Skills (Topic)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124731982","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":"Risk Management- Em Asst","authors":"S. Michael","doi":"10.2139/ssrn.3737157","DOIUrl":"https://doi.org/10.2139/ssrn.3737157","url":null,"abstract":"Risk management is the process of finding out the risk in the project and identifying the solutions to the risks found. In ideal risk management, a prioritization process is followed whereby the risks with the greatest loss (or impact) and the greatest probability of occurring are handled first, and risks with lower probability of occurrence and lower loss are handled in descending order. In practice the process of assessing overall risk can be difficult, and balancing resources used to mitigate between risks with a high probability of occurrence but lower loss versus a risk with high loss but lower probability of occurrence can often be mishandled.","PeriodicalId":205839,"journal":{"name":"CompSciRN: Practical Computer Skills (Topic)","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125102206","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":"Investor Emotions and Earnings Announcements","authors":"Domonkos F. Vamossy","doi":"10.2139/ssrn.3626025","DOIUrl":"https://doi.org/10.2139/ssrn.3626025","url":null,"abstract":"Armed with a decade of social media data, I explore the impact of investor emotions on earnings announcements. In particular, I test whether the emotional content of firm-specific messages posted on social media just prior to a firm's earnings announcement explains its earnings and announcement returns. I find that investors are typically excited about firms that end up exceeding expectations, yet their enthusiasm results in lower announcement returns. Specifically, a standard deviation increase in excitement is associated with an 8.9 basis points lower announcement return, which translates into an approximately 7.2% annualized loss. Motivated by this finding, I then construct a zero-cost portfolio leveraging social media emotions and opinions around earnings announcements, and show performance exceeding the market by a factor of 1.75 over the decade. My findings confirm that emotions and market dynamics are closely related and highlight the importance of considering investor emotions when assessing a firm's short-term value.","PeriodicalId":205839,"journal":{"name":"CompSciRN: Practical Computer Skills (Topic)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116066390","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":"Effective Innovation Management in Strategic Planning","authors":"Rahul Reddy Nadikattu","doi":"10.2139/ssrn.3622850","DOIUrl":"https://doi.org/10.2139/ssrn.3622850","url":null,"abstract":"When designing how to structure an organization, administrative staff take into account a variety of things. Of these, the most ubiquitous challenge for management is typically how to ensure that the different departments within an overarching organization can operate together efficiently. This is exactly the goal of innovative management and strategic planning. By implementing a variety of techniques, companies can ensure that the goals of the different departments and employees align to a common objective. This process also can aid organizational management to establish the best and most efficient use of resources. By implementing innovation management in strategy planning information technology-based companies can fortify the strengths of the different departments and facilitate the overall success of the organization.","PeriodicalId":205839,"journal":{"name":"CompSciRN: Practical Computer Skills (Topic)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114842026","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 Architectural Models of Interaction of Virtual Communities for Organizing the Collective Documentation Process","authors":"Pavlo Getmanyuk, Y. Forkun","doi":"10.15587/2312-8372.2020.198536","DOIUrl":"https://doi.org/10.15587/2312-8372.2020.198536","url":null,"abstract":"The object of this research is organizational methods of virtual community creation in web area. In this article were released researches of concerning types, communicative features, information behavior, distribution of possible roles among web participants of virtual communities, methods of their organizing and management. The research was identified strengths and weaknesses of all types of virtual communities with their main opportunities in the web space. Main principles of communicative peculiarities among participants from one virtual community of each organization type were given. The main problems caused by opportunities in collaboration among different web communities. It causes uncontrollable data flows, which can have influences on a content generation process. There were analyzed a positioning of different virtual communities types. It was identified all possible integrational variations among different virtual communities. This depends on positioning principle of different web communities' types in the web area. There were proposed three main architectural paradigms of virtual community creation. The choosing of each of them depends on necessity of data flow management for improving content quality and communication safety between different participants. Each of these paradigms has some strength and weaknesses. The own web service development is the best solution for data flow isolation from other web communities and safety. Free web services contain local virtual communities, which are contains a global one. Collaboration between different virtual communities can cause unnecessary informational behavior of their participants. The interesting method is to combine proposed paradigms. According to the results, authors proposed situational methods of architectural organizing of virtual communities. Each of them has some benefits and weak sides.","PeriodicalId":205839,"journal":{"name":"CompSciRN: Practical Computer Skills (Topic)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128283963","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":"The Role of Pre-Innovation Platform Activity for Diffusion Success: Evidence from Consumer Innovations on a 3D Printing Platform","authors":"Jörg Claussen, M. Halbinger","doi":"10.2139/ssrn.3453220","DOIUrl":"https://doi.org/10.2139/ssrn.3453220","url":null,"abstract":"Abstract Digital platforms are becoming increasingly important for household sector innovators that seek support for the innovation process and that want to make innovations available to large audiences. Innovation development and diffusion is especially challenging for first-time innovators as they cannot build on experiences from prior innovations. We argue that first-time innovators can increase the diffusion success of their innovations by engaging in pre-innovation platform activities. We use the context of the 3D printing platform Thingiverse to show that a consumer's pre-innovation platform activity increases innovation diffusion success and that frequency, quality and relatedness of a consumer's pre-innovation platform activity promotes this effect. We find support that innovation quality, the use of recombinant innovations, and innovation documentation are three mechanisms through which pre-innovation platform activities translate into higher diffusion success of consumers’ first innovation.","PeriodicalId":205839,"journal":{"name":"CompSciRN: Practical Computer Skills (Topic)","volume":"160 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131732009","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":"Initial Margin Simulation with Deep Learning","authors":"Xun Ma, S. Spinner, Alex Venditti, Z. Li, Strong Tang","doi":"10.2139/ssrn.3357626","DOIUrl":"https://doi.org/10.2139/ssrn.3357626","url":null,"abstract":"Regulatory initial margin (IM) for non-cleared OTC derivatives is currently being implemented in the financial industry per BCBS-IOSCO requirements. To incorporate IM into counterparty credit risk (CCR) measurements and xVA calculations (especially MVA), it is necessary to simulate future IM requirements inside a CCR/xVA system. However, this is an extremely challenging task because the two readily available approaches – brute force simulation and regression-based approximation – are either prohibitively expensive in terms of computational cost, or extremely difficult for large and diverse portfolios due to the high dimensionality of the problem. In this paper, a practical deep learning approach to IM simulation is proposed, with a proof-of-concept implementation and test results demonstrating fast and accurate portfolio-level simulation of scenario-dependent IM through multiple time steps. Model training is shown to converge quickly, and model performance is robust under practical conditions. This approach separates offline training from online simulation, so that it can be implemented in production without significant system overhaul. Conceptually, since training data are generated by a deterministic function (in this case the sensitivity-based SIMM model), data noise is not a concern and overfitting can be avoided, assuming portfolio turnovers occur gradually during periods of time much longer than model training cycles. Model output can also be explained or validated by the underlying data-generating function for transparency. Other potential applications of this deep learning approach are also discussed, including collateral optimization.","PeriodicalId":205839,"journal":{"name":"CompSciRN: Practical Computer Skills (Topic)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120987022","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 to Master Digital Age Competencies","authors":"R. Lawson, Daniel Smith","doi":"10.2139/SSRN.3275058","DOIUrl":"https://doi.org/10.2139/SSRN.3275058","url":null,"abstract":"As technology transforms the management accounting profession at an ever-increasing rate, are you concerned about having the necessary skills to further your career? Do you want to enhance your skill set but don’t know where to start? If so, don’t worry. In one or two weeks’ worth of time (perhaps spread over several months), you can develop the essential competencies you need to adapt to the modern workplace.","PeriodicalId":205839,"journal":{"name":"CompSciRN: Practical Computer Skills (Topic)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132928096","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}