Multivariate visualization: A Taxonomy and novel visualization methods

2021 ◽  
Author(s):  
Tom O'Kane ◽  
Dustin Fife

While intuitive visualizations for bivariate analyses are numerous and able to be constructed with relative ease, the same is not true for multivariate analyses. Commonly utilized multivariate visualization strategies are often cognitively taxing for readers and there is little guidance for researchers seeking to decide upon the proper visualization for their analysis. In this paper we seek to rectify these limitations by developing a data analysis taxonomy that allows one to easily identify appropriate visualizations. This taxonomy aims to provide guidance to researchers in their decision-making regarding which multivariate visualization strategy best fits their research question. Our taxonomy classifies research questions into five different categories (zero-order effects, conditioning, moderation, mediation, and clustering), providing example research questions and analyses for each. Throughout, we identify tools appropriate for multivariate visualizations, including ghost lines, added variable plots, and paneling. All these tools are freely available in R through the Flexplot package, as well as in the Visual Modeling module in JASP.

2020 ◽  
Vol 13 (1) ◽  
pp. 315
Author(s):  
Malte Schäfer ◽  
Manuel Löwer

With the intent of summing up the past research on ecodesign and making it more accessible, we gather findings from 106 existing review articles in this field. Five research questions on terminology, evolution, barriers and success factors, methods and tools, and synergies, guide the clustering of the resulting 608 statements extracted from the reference. The quantitative analysis reveals that the number of review articles has been increasing over time. Furthermore, most statements originate from Europe, are published in journals, and address barriers and success factors. For the qualitative analysis, the findings are grouped according to the research question they address. We find that several names for similar concepts exist, with ecodesign being the most popular one. It has evolved from “end-of-pipe” pollution prevention to a more systemic concept, and addresses the complete life cycle. Barriers and success factors extend beyond the product development team to management, customers, policymakers, and educators. The number of ecodesign methods and tools available to address them is large, and more reviewing, testing, validation, and categorization of the existing ones is necessary. Synergies between ecodesign and other research disciplines exist in theory, but require implementation and testing in practice.


Risks ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 123
Author(s):  
Ioana Lavinia Safta ◽  
Andrada-Ioana Sabău (Popa) ◽  
Neli Muntean

Creative accounting has its background since early studies in 1975, until the present time. It continues to be a subject of great interest for the companies and interested parties. Thus, the current paper will aim to answer the following proposed research questions: 1. Which are the most used methods for detecting the manipulation of financial statements in the literature? 2. Which are the terms that are most frequently encountered in the literature associated with “creative accounting? 3. Which are the journals that have the highest frequency of articles written on the topic “creative accounting”? 4. Over time, how did research evolve in the field of creative accounting? 5. Which countries are most preoccupied in publishing regarding this topic? To answer the research question 1, the models published in the literature for measuring manipulation techniques through creative accounting were reviewed and analyzed. For the remaining research questions, a bibliometric analysis for the publications in this area was performed. For collecting the sample, articles on this topic were selected from the international Web of Science database. Following this, a bibliometric analysis of the articles was performed, using the VOSviewer program. A total of 4045 publications on creative accounting were identified. Through the bibliometric analysis we have answered research question 2, by identifying the key words that have the closest proximity to creative accounting. To answer the remaining research questions, we identified the journals with the highest frequency of publication and the countries with the highest interest on the topic. It is especially important to evaluate the quality of this many research papers and to obtain valuable information.


2021 ◽  
pp. 205789112110405
Author(s):  
Ikhsan Darmawan

Although the number of countries that have adopted e-voting has decreased lately, the number of academic publications on e-voting adoption has increased in the last two years. To date, there is no coherent narrative in the existing literature that explains the progress of the research on e-voting adoption. This article aims to answer the following research question: “How has research on the topic of e-voting adoption progressed over the last 15 years?” The article provides a semi-systematic review of 78 studies that were conducted from 2005 to 2020. In this article, I argue that although the studies on e-voting adoption are dominated by a single case study, by research in the United States, and by the positivist paradigm, scholars have employed the term “e-voting adoption” diversely and the research on e-voting adoption has evolved to address more specific research questions. Recommendations for the future agenda of research on e-voting adoption are also discussed.


2021 ◽  
Author(s):  
Yamamah Kashkool ◽  
wael Al-bayati

"The period of approving the Constitution of the Republic of Iraq for the year 2005 was surrounded by a state of political turmoil that usually accompanies any transitional phase that carries many political variables through the transition from a phase of dictatorial rule to a new phase bearing the features of democracy. In its approval, the lack of clarity in the political vision and the weakness of the constitutional legal culture of its authors, as well as the way in which it was approved by a popular referendum, which is voted on by yes or no, and does not allow an opportunity to discuss its articles and articles and diagnose its shortcomings. One of the shortcomings in our constitution is that it does not refer to regulating the resignation of the Prime Minister. This position has a political nature, and an administrative nature, and its occupant has the right to decide not to continue with this position and be satisfied with working in this field for any reason, and this must be in accordance with the context Organized legal, which is known as resignation., and this is what we dealt with in this research. For the purpose of researching this topic, we asked a research question that is... How can we address the legislative shortcomings that surrounded the Constitution of the Republic of Iraq for the year 2005 and related to regulating the resignation of the Prime Minister? From this research question, we derived several secondary research questions... 1- What is the limitation of legislative shortcomings? 2- What are the reasons for the legislative deficiencies in the Iraqi constitution? 3- Does the Prime Minister have the right to resign during his tenure? 4- To whom is the resignation submitted? 5- Who is the party that decides whether or not to accept the resignation? 6- What are the procedures that follow the acceptance of the resignation? By discussing these questions, we will try to reach the possibility of developing a legislative text that deals with a complete organization of the resignation of the Prime Minister, especially since the idea of ​​amending the constitution and to this day is still valid and possible, because many political, social and economic conditions in the country have changed from the time of entry into force of this constitution, which makes the idea of ​​the amendment obligatory and necessary"


2018 ◽  
Vol 45 (1) ◽  
pp. 48-53 ◽  
Author(s):  
Emmanuelle Bélanger ◽  
Anna Towers ◽  
David Kenneth Wright ◽  
Yuexi Chen ◽  
Golda Tradounsky ◽  
...  

ObjectivesIn 2015, the Province of Quebec, Canada passed a law that allowed voluntary active euthanasia (VAE). Palliative care stakeholders in Canada have been largely opposed to euthanasia, yet there is little research about their views. The research question guiding this study was the following: How do palliative care physicians in Quebec position themselves regarding the practice of VAE in the context of the new provincial legislation?MethodsWe used interpretive description, an inductive methodology to answer research questions about clinical practice. A total of 18 palliative care physicians participated in semistructured interviews at two university-affiliated hospitals in Quebec.ResultsParticipants positioned themselves in opposition to euthanasia. Their justifications were framed within their professional commitment to not hasten death, which sat in tension with the value of patients’ autonomy to choose how to die. Participants described VAE as unacceptable if it impeded opportunities to evaluate and alleviate suffering. Further, they contested government rhetoric that positioned VAE as a way to improve end-of-life care. Participants felt that VAE would diminish the potential of palliative care to relieve suffering. Dilemmas were apparent in their narratives, about reconciling respect for patient autonomy with broader palliative care values, and the value of accompanying and not abandoning patients who make requests for VAE while being committed to neither prolonging nor hastening death.ConclusionsThis study provides insight into nuanced positions of experienced palliative care physicians in Quebec and confirms expected tensions between an important stakeholder and the practice of VAE as guided by the new legislation.


2018 ◽  
Vol 23 (1) ◽  
pp. 41-63 ◽  
Author(s):  
Karissa R. Pelletier ◽  
Jesenia M. Pizarro

This study examines the covariates of weapon choice in homicide incidents. Two research questions are examined. The first research question is: what variables influence the use of a particular type of weapon in a homicide? The second research question asks: how does the method of weapon retrieval, or lack thereof, affect the choice of weapon? The findings suggest that firearms are more likely to be on the offender’s person and carried to the incident scene relative to other weapon types. In addition, the use of specific types of weapons is conditioned by the demographic and lifestyle characteristics of victims and offenders.


2017 ◽  
Vol 8 (2) ◽  
pp. 70-93
Author(s):  
Kallol Das ◽  
Karman Khanna ◽  
Surankita Ganguly

There is increasing consumer involvement and hence, investor interest in the airlines industry, as far as emerging economies is concerned. A study of the literature by the authors did not produce any research paper on the process drivers of brand equity in the context of airlines. Therefore, the present study makes an attempt to address this gap. The primary research question is: What are the driving factors for building brand equity in the case of airline services? This paper uses a “two-case” multiple-case design employing theoretical replication. The cases are based on two Indian organizations, Indigo Airlines and Go Air. Both these businesses are similar in many aspects but have achieved very contrasting outcomes. The primary research question is broken down into following two secondary research questions. How is Indigo Airlines building its brand? How is Go Air building its brand? Data collection involved use of documents, archives, observations, participant-observations, and surveys. Data analysis involved conducting cross-case analysis. The findings have been used to develop a conceptual framework for building brand equity in airlines.


BMJ Open ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. e052953
Author(s):  
Timothy Peter Clark ◽  
Brennan C Kahan ◽  
Alan Phillips ◽  
Ian White ◽  
James R Carpenter

Precise specification of the research question and associated treatment effect of interest is essential in clinical research, yet recent work shows that they are often incompletely specified. The ICH E9 (R1) Addendum on Estimands and Sensitivity Analysis in Clinical Trials introduces a framework that supports researchers in precisely and transparently specifying the treatment effect they aim to estimate in their clinical trial. In this paper, we present practical examples to demonstrate to all researchers involved in clinical trials how estimands can help them to specify the research question, lead to a better understanding of the treatment effect to be estimated and hence increase the probability of success of the trial.


2021 ◽  
pp. bmjqs-2021-012988
Author(s):  
Perla J Marang-van de Mheen ◽  
Hein Putter ◽  
Esther Bastiaannet ◽  
Alex Bottle

When comparing hospitals on their readmission rates as currently done in the Hospital Readmission and Reduction Program (HRRP) in the USA, should we include the competing risk of mortality after discharge, which precludes the readmission, in the analysis? Not including competing risks in current HRRP metrics was raised recently as a limitation with possible unintended consequences, as financial penalties for higher readmission rates are more severe than for higher mortality rates. Incorrectly including or ignoring competing risks can both induce bias. In this paper, we present a framework to clarify situations when competing risks should be taken into account and when they should not. We argue that the research question and the perspective from which it is asked determine whether the competing risk is also of interest and should be included in the analysis, or if only the event of interest should be considered. This information is often not explicitly reported but is needed to interpret whether the results are valid. Using the examples of readmissions and cancer, we show how different research questions fit different perspectives from which these are asked (patient, system, regulatory/insurance). Slightly changing the research question or perspective may thus change the analysis. Even though some may argue that any introduced bias is likely to be small, in the context of the HRRP, even small changes may mean that a hospital will face (higher) financial penalties. The impact of getting it wrong matters.


2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Abdullah Alshibani ◽  
Jay Banerjee ◽  
Fiona Lecky ◽  
Timothy J. Coats ◽  
Rebecca Prest ◽  
...  

Abstract Background Emergency care research into ‘Silver Trauma’, which is simply defined as major trauma consequent upon relatively minor injury mechanisms, is facing many challenges including that at present, there is no clear prioritisation of the issues. This study aimed to determine the top research priorities to guide future research. Methods This consensus-based prioritization exercise used a three-stage modified Delphi technique. The study consisted of an idea generating (divergent) first round, a ranking evaluation in the second round, and a (convergent) consensus meeting in the third round. Results A total of 20 research questions advanced to the final round of this study. After discussing the importance and clinical significance of each research question, five research questions were prioritised by the experts; the top three research priorities were: What are older people’s preferred goals of trauma care? Beyond the Emergency Department (ED), what is the appropriate combined geriatric and trauma care? Do older adults benefit from access to trauma centres? If so, do older trauma patients have equitable access to trauma centre compared to younger adults? Conclusion The results of this study will assist clinicians, researchers, and organisations that are interested in silver trauma in guiding their future efforts and funding toward addressing the identified research priorities.


Sign in / Sign up

Export Citation Format

Share Document