nils-herrmann/clean_scirepeval huggingface dataset:
Process Mining Manifesto
Venue: Business Process Management Workshops
Year: 2011

Process mining techniques are able to extract knowledge from event logs commonly available in today's information systems. These techniques provide new means to discover, monitor, and improve processes in a variety of application domains. There are two main drivers for the growing interest in process mining. On the one hand, more and more events are being recorded, thus, providing detailed information about the history of processes. On the other hand, there is a need to improve and support business processes in competitive and rapidly changing environments. This manifesto is created by the IEEE Task Force on Process Mining and aims to promote the topic of process mining. Moreover, by defining a set of guiding principles and listing important challenges, this manifesto hopes to serve as a guide for software developers, scientists, consultants, business managers, and end users. The goal is to increase the maturity of process mining as a new tool to improve the (re)design, control, and support of operational business processes.
Failure mechanism and constitutive relation for an anchorage segment of an anchor cable under pull out loading
Year: 2020

It is a key to reveal the failure mechanism and constitutive relation of the anchor segment of the anchor cable. By using the self developed pull twist coupling device, the pull out tests for anchor cables with non rotation and free rotation conditions were carried out, respectively, and the pull out load torque displacement curves were obtained to study the failure mechanism and constitutive relation of the anchor cables. Results show that the pull out load of the anchor cable with non rotation is larger than that in the free rotation state, and the torque reverse force generated of the anchor cable accounts for 24.6 32.0% of the pull out load during the pull out tests. With the increase in pull out load, the torque increases firstly and then decreases when it reaches the peak value. The relationships between the pull out load and torque show the cubic polynomial and are basically linear at different stages. The failure mechanism of the anchorage segment displays the pulling failure at first and then the pulling and shearing failures. The pull out load torque displacement relationship of the anchor cable goes through three stages: the loading, the softening, and the residual stages. The fitted constitutive relationship curves are in good agreement with the experimental curves. The obtained conclusions can provide a theoretical reference for the similar practice.
Simulations of electromagnetic processes in an asynchronous traction drive of automatic electric braking of an electric train
Year: 2016

This paper shows the possibility and effectiveness of using an electric brake of motor railcar rolling stock with an asynchronous traction drive as an automatic brake. Since electric braking is unaffected by low temperatures and it can provide high efficiency protection from wheel slipping and skidding when integrated into a traction drive control system, as well as control braking torque with a high speed. Many motor axes and, hence, high power railcar rolling stock can provide less braking distance at electric braking than does pneumatic braking, which is especially important for emergency braking. However, an electric brake can be used as an automatic one only if it can be driven even in the case of loss of power from the catenary or diesel generator. The possibility in principle and the workability of using an electric brake as an automatic one are analyzed on the basis of mathematical simulations. The electromagnetic processes in an asynchronous traction drive under such conditions are considered, and the actuation time of an electric brake in the absence of supplied power is determined.
The Pushshift Reddit Dataset
Venue: ICWSM
Year: 2020

Social media data has become crucial to the advancement of scientific understanding. However, even though it has become ubiquitous, just collecting large scale social media data involves a high degree of engineering skill set and computational resources. In fact, research is often times gated by data engineering problems that must be overcome before analysis can proceed. This has resulted recognition of datasets as meaningful research contributions in and of themselves. Reddit, the so called "front page of the Internet," in particular has been the subject of numerous scientific studies. Although Reddit is relatively open to data acquisition compared to social media platforms like Facebook and Twitter, the technical barriers to acquisition still remain. Thus, Reddit's millions of subreddits, hundreds of millions of users, and hundreds of billions of comments are at the same time relatively accessible, but time consuming to collect and analyze systematically. In this paper, we present the Pushshift Reddit dataset. Pushshift is a social media data collection, analysis, and archiving platform that since 2015 has collected Reddit data and made it available to researchers. Pushshift's Reddit dataset is updated in real time, and includes historical data back to Reddit's inception. In addition to monthly dumps, Pushshift provides computational tools to aid in searching, aggregating, and performing exploratory analysis on the entirety of the dataset. The Pushshift Reddit dataset makes it possible for social media researchers to reduce time spent in the data collection, cleaning, and storage phases of their projects.
Exploratory text data analysis for quality hypothesis generation
Year: 2018

Freestyle text data such as surveys, complaint transcripts, customer ratings, or maintenance squawks can provide critical information for quality engineering. Exploratory text data analysis (ETDA) is proposed here as a special case of exploratory data analysis (EDA) for quality improvement problems with freestyle text data. The EDTA method seeks to extract useful information from the text data to identify hypotheses for additional exploration relating to key inputs or outputs. The proposed four steps of ETDA are: (1) preprocessing of text data, (2) text data analysis and display, (3) salient feature identification, and (4) salient feature interpretation. Five examples illustrate the methods.
Foresighting needs for secure societies "2035" the FOCUS roadmap and its implications for the science and practice of politics in civil security
Year: 2014

There is more than the societal dimension of security: the societal creation of security. There are no effective technological solutions without acceptance and public participation. Security Research should consider significant social, cultural, ethical, legal, and political aspects of security from the very beginning, that is, not only in the implementation perspective and in terms of public acceptance and ascribed legitimacy. Civil security is thus becoming an own sub field of public policy analysis, addressing societal security from a governance perspective. While "security governance" as such is not a new concept, it so far has mainly been applied to international security and strategic studies. However, growing concern about "societal security," public acceptance of home affairs, internal security, or homeland security and related technologies, the "objective" (factual) vs. "subjective" (felt) security continuum, and the "internal" "external" security continuum show the relevance of a governance approach to civil security. This need is contributed to by the increase in phenomena of "securitization," whereby issues are speech acted as security concerns and thus removed from the normal policy and governmental process. The FOCUS project on "foresight security scenarios" and a comprehensive approach to civil security in the 2035 time frame had a two year mission and was co funded by the European Union. The project performed multiple foresight on the international scale, including collaboration with foresight initiatives and project in a couple of countries, including far beyond the EU. The project aimed to define the most plausible threat scenarios that affect the "borderline" between the external and internal dimensions to security and to derive guidance for possible security roles of nations and organizations, and decisions to plan research in support of those roles. Scenario foresight in the FOCUS project was done on the level of critical and creative yet methodologically guided forward thinking at strategic level in order to increase the ability to cope with relevant alternative futures from the near future until 2035. The first part of the paper introduces the FOCUS scenario foresight approach. The second part presents selected results from FOCUS scenario foresight on future EU roles as a comprehensive security provider to its citizens, as they were used in roadmap development. The third part describes the reference scenarios towards which the roadmap was geared. The fourth part introduces the FOCUS roadmap. A brief fifth part provides an outlook on the way ahead: governing civil security and the research that contributes to it. IPSA 2014 FOCUS Foresighting needs for secure societies "2035" 3
Chronic kidney disease and the aging population
Venue: Journal of Nephrology
Year: 2014

The proportion of older people in the general population is steadily increasing worldwide, with the most rapid growth in lowand middle income countries  This demographic change is to be celebrated, because it is the consequence of socioeconomic development and better life expectancy. However, population aging also has important implications for society in diverse areas including health systems, labor markets, public policy, social programs, and family dynamics  A successful response to the aging population will require capitalizing on the opportunities that this transition offers, as well as effectively addressing its challenges. Chronic kidney disease (CKD) is an important public health problem that is characterized by poor health outcomes and very high health care costs. CKD is a major risk multiplier in patients with diabetes, hypertension, heart disease and stroke all of which are key causes of death and disability in older people  Since the prevalence of CKD is higher in older people, the health impact of population aging will depend in part on how the kidney community responds. March 13, 2014 will mark the celebration of the 9th World Kidney Day (WKD) an annual event jointly sponsored by the International Society of Nephrology and the International Federation of Kidney Foundations. Since its inception in 2006, WKD has become the most successful effort to raise awareness among policymakers and the general public about the importance of kidney disease. The topic for WKD 2014 is 'CKD in older people' This article reviews the key links among kidney function, age, health and illness and discusses the implications of the aging population for the care of people with CKD.
Nitrogen doped carbon quantum dots decorated 2D graphitic carbon nitride as a promising photocatalyst for environmental remediation: A study on the importance of hybridization approach.
Venue: Journal of environmental management
Year: 2020

Growing concerns of water pollution by dye pollutants from the textile industry has led to vast research interest to find green solutions to address this issue. In recent years, heterogeneous photocatalysis has harvested tremendous attention from researchers due to its powerful potential applications in tackling many important energy and environmental challenges at a global level. To fully utilise the broad spectrum of solar energy has been a common aim in the photocatalyst industry. This study focuses on the development of an efficient, highly thermal and chemical stable, environmentally friendly and metal free graphitic carbon nitride (g C3N4) to overcome the problem of fast charge recombination which hinders photocatalytic performances. Nitrogen doped carbon quantum dots (NCQDs) known for its high electronic and optical functionality properties is believed to achieve photocatalytic enhancement by efficient charge separation through forming heterogeneous interfaces. Hence, the current work focuses on the hybridisation of NCQDs and g C3N4 to produce a composite photocatalyst for methylene blue (MB) degradation under LED light irradiation. The optimal hybridisation method and the mass loading required for maximum attainable MB degradation were systematically investigated. The optimum photocatalyst, 1 wt% NCQD/g C3N4 composite was shown to exhibit a 2.6 fold increase in photocatalytic activity over bare g C3N4. Moreover, the optimum sample displayed excellent stability and durability after three consecutive degradation cycles, retaining 91.2% of its original efficiency. Scavenging tests were also performed where reactive species, photon hole (h+ was identified as the primary active species initiating the pollutant degradation mechanism. The findings of this study successfully shed light on the hybridisation methods of NCQDs which improve existing g C3N4 photocatalyst systems for environmental remediation by utilising solar energy.
Bayesian estimation of the global minimum variance portfolio
Venue: Eur. J. Oper. Res.
Year: 2017

In this paper we consider the estimation of the weights of optimal portfolios from the Bayesian point of view under the assumption that the conditional distributions of the logarithmic returns are normal. Using the standard priors for the mean vector and the covariance matrix, we derive the posterior distributions for the weights of the global minimum variance portfolio. Moreover, we reparameterize the model to allow informative and non informative priors directly for the weights of the global minimum variance portfolio. The posterior distributions of the portfolio weights are derived in explicit form for almost all models. The models are compared by using the coverage probabilities of credible intervals. In an empirical study we analyze the posterior densities of the weights of an international portfolio.
Chapter 10 Presenting Findings from Qualitative Research: One Size Does Not Fit All!
Venue: The Production of Managerial Knowledge and Organizational Theory: New Approaches to Writing, Producing and Consuming Theory
Year: 2019

In this chapter, the authors explore the state of our field in terms of ways to present qualitative findings. The authors analyze all articles based on qualitative research methods published in the Academy of Management Journal from 2010 to 2017 and supplement this by informally surveying colleagues about their "favorite" qualitative authors. As a result, the authors identify five ways of presenting qualitative findings in research articles. The authors suggest that each approach has advantages as well as limitations, and that the type of data and theorizing is an important consideration in determining the most appropriate approach for the presentation of findings. The authors hope that by identifying these approaches, they enrich the way authors, reviewers, and editors approach the presentation of qualitative findings.
Games with vector payoffs a dynamic programming approach
Year: 2015

In several decision making scenarios in adversarial environments, a decision maker cares about multiple objectives at the same time. For example, in certain defense operations, an agent might be interested in simultaneously defending multiple targets from an enemy. In a repeated game against an unknown opponent, a player wants to minimize `regret' i.e. to try to choose a strategy that performs well relative to each strategy in some given class of strategies in hindsight. In dynamic asymmetric information games where a player lacks some information that other players have, a typical goal is to choose a strategy that gives appropriate worst case guarantees simultaneously on all possibilities. Many of these scenarios can be modeled as a vector valued sequential game between the agent and an adversary. This thesis is concerned with characterizing and efficiently computing the optimal worst case guarantees that an agent can achieve on the losses in such games.The main contribution of this work is to show that for large classes of sequential games, these optimal guarantees can be characterized as the fixed point of a dynamic programming operator defined on the space of extremal (either maximal or minimal) elements of subsets of some partially ordered topological space. We first present this result in detail for the model of discounted repeated games with vector payoffs and then extend it to stochastic games with multiple states, and finally to reachability games (which model several types of pursuit evasion games that arise in defense operations) For each of these models, we prove several structural properties of the set of these optimal guarantees and the corresponding optimal strategies. This approach opens up the possibility of using many well known dynamic programming based methods and algorithms for approximating these guarantees and computing approximately optimal strategies. One such method based on approximate value iteration is presented for the case of repeated games.This approach results in the first characterization of the minmax optimal regret and the corresponding optimal strategy for expected regret minimization in repeated games with discounted losses. Further, it results in the first known procedure for efficiently computing an approximately optimal strategy for the uninformed player in Aumann and Maschler's celebrated model of zero sum discounted repeated games with incomplete information on one side.
Design for an educational computer game about art variables
Year: 2018

This thesis is dedicated to educational computer games. It also contains a rough design for educational computer game about art variables. In the first theoretical part, I summarized the findings of important authors from this field what the game in general is and what is a computer game. I am writing about the learning potential of educational computer games, their benefits and negative experience of use, their impact on learning, study motivation and how playing games in class affects the dynamics between pupils. The game I intend to develop is a mix of a technology and fine art which is why the thesis also describes art variables, as they are the main topic. In the practical part of my thesis, I described a model for game development SADDIE, and, combined the model with my personal ideas as well. I described what the image and content would be, sketches of characters are included, what the (pupil) players would do in the fantasy world of art variables and how are the learning goals linked to the final goals of the game.
USE OF NEW FEATURES AND ADD INS IN POWERPOINT TO CREATE ANIMATIONS THAT STIMULATE LEARNING
Year: 2012

Animations and simulations play a significant role in developing e learning materials, as they clarify more complicated concepts through visual means. In order to integrate a large range of media in the course content, e learning authoring tools are used. One of the most known and used unspecialized authoring tool is MS PowerPoint. The paper examines the new abilities of MS PowerPoint 2010, as it is and associated with some add ins, to create animations. Animations were developed for the Environmental protection course, a course usually regarded as challenging by textile chemistry students, and the students have been questioned to determine their opinions concerning computerized simulations and animations. Changes in the students performance as a result of introducing animations and simulations into the Environmental protection course have been analysed.
Evaluation of Correlation between Clinical and Magnetic Resonance Findings of Patellar Chondromalacia
Year: 2020

Correspondence (Iletisim) Deniz Ozel, M.D. Okmeydani Egitim ve Arastirma Hastanesi, Saglik Bilimleri Universitesi, Radyoloji Bolumu, Istanbul, Turkey Phone (Telefon) +90 533 027 49 08 E mail (E posta) denizozel34@hotmail.com Submitted Date (Basvuru Tarihi) 05.02.2020 Accepted Date (Kabul Tarihi) 22.04.2020  Evaluation of Correlation between Clinical and Magnetic Resonance Findings of Patellar Chondromalacia doi: 10.14744/hnhj.2020.82504 muscular atrophy and limited flexion of the knee. This test asks about the duration of complaints. The highest possible score is one hundred and lower ratings indicate greater pain/disability [3, 4] For confusing cases, additional knee MRI is performed to confirm the diagnosis. According to the literature, the two main methods of patellar chondromalacia can be identified with conventional knee MRI. The first method is defining and grading the patellar cartilage signal intensity and the second method is measuring the mean thickness of the cartilaginous tissue. This study aimed to evaluate the correlation between clinical appearance and MRI features of chondromalacia and to define a novel MRI indicator to diagnose patellar chondromalacia. After a search of the literature, we discovered that many articles are drawing the usefulness of new MRI techniques and their correlations with arthroscopy. However, there are few articles about the correlation between clinical appearance and commonly used MRI features, so we hoped to contribute to the existing knowledge [5, 6]  We prospectively reviewed the clinical scores of the patients who underwent the knee MRI and diagnosed to be chondromalacia based on clinical scores. The knee MRI images Chondromalacia staging was performed by the same radiologist with a 4 year experience. This study was performed in our institute between May 2017 and February 2019. If the knee pain was suggestive for the presence of chondromalacia clinically, then VAS and Kujala AKPS were noted. Corresponding MR features were evaluated. If any individual had additional knee disturbance/s, those could be a reason for the knee pain, such as meniscal or ligament injuries, inflammatory processes or masses; they excluded from this study to objectively determine the source of the pain disturbance. Another reason for exclusion was the presence of motion artifacts that prevent optimal cartilage evaluation. The patients with pediatric age were also excluded from this study because of ongoing maturation, so the patellar cartilage thickness and the signal intensity could be confusing.
Editor's Note: When Everyone Became a Teacher
Year: 2020

While I've always considered being a children's librarian as being a teacher, I never expected how much impact the word "teacher" would have in spring 2020 With the advent of the COVID 19 pandemic and school closures, many of us became full time teachers to our own children And that didn't come without its challenges And while schools and teachers did offer online assistance, many parents like me! struggled to keep thoughtful and effective learning going every day Cooking class? Sure! I can make cupcakes! Science? Buy a tomato plant and watch it grow! Physical education meant a brisk walk around the neighborhood