Parameterized Study of the Test Cover Problem

We carry out a systematic study of a natural covering problem, used for identification across several areas, in the realm of parameterized complexity. In the {\sc Test Cover} problem we are given a set $[n]=\{1,...,n\}$ of items together with a collection, $\cal T$, of distinct subsets of these items called tests. We assume that $\cal T$ is a test cover, i.e., for each pair of items there is a test in $\cal T$ containing exactly one of these items. The objective is to find a minimum size subcollection of $\cal T$, which is still a test cover. The generic parameterized version of {\sc Test Cover} is denoted by $p(k,n,|{\cal T}|)$-{\sc Test Cover}. Here, we are given $([n],\cal{T})$ and a positive integer parameter $k$ as input and the objective is to decide whether there is a test cover of size at most $p(k,n,|{\cal T}|)$. We study four parameterizations for {\sc Test Cover} and obtain the following: (a) $k$-{\sc Test Cover}, and $(n-k)$-{\sc Test Cover} are fixed-parameter tractable (FPT). (b) $(|{\cal T}|-k)$-{\sc Test Cover} and $(\log n+k)$-{\sc Test Cover} are W[1]-hard. Thus, it is unlikely that these problems are FPT

Evanescent- Volume 3, Issue 1

Evanescent: A Journal of Literary Medicine is the journal of the Eakins Writers’ Workshop, which also sponsors the Drs. Theresa and Charles Yeo Writing Prize. The Eakins Writers’ Workshop is supported by the Jefferson Center for Injury Research and Prevention. Contents: Letters From The Editors Struggle/Growth The Drs. Theresa and Charles Yeo Writing Prize: First Place Stasis/Change The Drs. Theresa and Charles Yeo Writing Prize: Second Place Vulnerability/Strength The Drs. Theresa and Charles Yeo Writing Prize: Third Place Wonder/Wisdom Gratitude/Insight Afterward List of Contributor

k-RNN: Extending NN-heuristics for the TSP

In this paper we present an extension of existing Nearest-Neighbor heuristics to an algorithm called k-Repetitive-Nearest-Neighbor. The idea is to start with a tour of k nodes and then perform a Nearest-Neighbor search from there on. After doing this for all permutations of k nodes the result gets selected as the shortest tour found. Experimental results show that for 2-RNN the solutions quality remains relatively stable between about 10% to 40% above the optimum

16th Annual Pancreatic Cancer and Related Diseases Patient Symposium

On November 13, 2021, Charles J. Yeo, MD, FACS, and the multidisciplinary team of clinicians and scientists hosted the 16th Annual Pancreatic Cancer & Related Diseases Symposium. The video of the event is available here: vimeo.com/646517712/36786afe68. View our Pancreatic Cancer Program 2021 Update to learn more about Dr. Yeo and the team’s great work! PROGRAM Welcome and Program OverviewCharles J. Yeo, MD, FACSSamuel D. Gross Professor and Chair of Surgery Advances in FT in Treating Pancreatic CancerAdam Mueller, MD, PhDInstructor, Radiation Oncology KRAS Mutation Allele Frequency Impacts Prognosis in Pancreatic Ductal Adenocarcinoma Using Next-Generation SequencingHarish Lavu, MD, FACSProfessor of Surgery COVID-19 Pandemic and the JPTR: Results of the 2022-2021 Annual SurveyTheresa P. Yeo, PhD, AOCHP, ACNP-BC, FAANPProfessor, Jefferson College of Nursing Jefferson Pancreatic Cancer Research Institute UpdateAvinoam Nevler, MDAssistant Professor Pancreatic Cancer: Progress in Systemic TherapiesDaniel Lin, MD, MScAssistant Professor of Medical Oncology Pancreatic Neuroendocrine Tumors (PNETs): Overview and TreatmentWilbur B. Bowne, MDProfessor of Biochemistry and Molecular Biology Questions & Answers Survivor Tribute Photo & Survivor Testimonia

Anmeldelse av Majority World Theology: Christian Doctrine in Global Context

Majority World Theology: Christian Doctrine in Global Context Gene L. Green, Stephen T. Pardue og K. K. Yeo (red.) Downers Grove: IVP Academic, 2020 715 sider. Anmeldt av Knut AlfsvågpublishedVersio

Problem-based leadership: nurturing managers during turbulent times

Purpose – The paper explores problem-based learning (PBL) as a useful methodology in leadership development during turbulent times. It identifies several pertinent action points for managers to lead through problems while understanding their capacity to empower themselves and others to face challenges at work. Design/methodology/approach – Broad concepts of PBL are used to distil the characteristics of this methodology and how they might be applicable to leadership development. An actual case of PBL in leadership education and training is employed to illustrate the processes of problem solving and reflective action-taking. Findings – When confronted by problems, managers should adopt a learning-oriented mindset and draw on the strengths of others to generate immediate solutions for experimentation. In doing so, they need to accept failure as a prerequisite for creative tensions to be generated and applied in messy circumstances. Until they think out of the box, they will continue to solve problems in tried-and-tested ways obstructing the emergence of revolutionary solutions. Practical implications – In order for managers to make an impact on organizational process and improvement, they need to focus on the action and learn components of PBL. They should be given the space to listen to their own “voice” and internalize the “voice” of others through reflection and dialogue. They should also be recognized for their courage and boldness in confronting problems even if more problems are generated in the process. It is facing the goliath that managers truly grow to become real leaders. Originality/value – Although the concept of PBL has been around for a long while, its applicability to leadership development has not been sufficiently explored in both theory and practice. This paper brings another dimension to the common idea of problem solving where solution seeking is not an end it itself. At best, it is a means to discovering the potential of true leadership in those whose mindset is focused on learning and reflective decision-making