Suchergebnisse

Over the last decade, the federal acquisition workforce has had to adapt to the need for new skill sets. Procurement reforms in the late 1990s required contracting specialists to have a greater knowledge of market conditions, industry trends, and market prices. Using market forces to determine reasonable prices has required an increase in both market research and price analysis methods. Most contracts pricing of acquisitions required cost analysis before these reforms became part of contracting regulations. These new regulations dictate a skill set for conducting price analysis that is largely missing from both the workplace and Defense Acquisitions University (DAU) existing curriculum. Since 2001, the Department of Defense Inspector General (DoDIG) and the Government Accountability Office (GAO) have issued several reviews of selected agencies discussing concerns about commercial and noncommercial prices of spare parts and services. Most of these reports have identified situations in which contracting officers failed to obtain adequate pricing information for justifying price reasonableness. In conclusion, both the DoDIG and the GAO have found that the contracting officers need improved expertise in both understanding and conducting price/cost analysis. The current gap in knowledge contributes to agencies missing cost saving opportunities as well as ventures to improve acquisition outcomes. Exercising appropriate price analysis methods that come from adequate price analysis guidance and training would address this gap. ; Naval Postgraduate School Acquisition Research Program

Over the last decade, the federal acquisition workforce has had to adapt to the need for new skill sets. Procurement reforms in the late 1990s required contracting specialists to have a greater knowledge of market conditions, industry trends, and market prices. Using market forces to determine reasonable prices has required an increase in both market research and price analysis methods. Most contracts pricing of acquisitions required cost analysis before these reforms became part of contracting regulations. These new regulations dictate a skill set for conducting price analysis that is largely missing from both the workplace and Defense Acquisitions University (DAU) existing curriculum. Since 2001, the Department of Defense Inspector General (DoDIG) and the Government Accountability Office (GAO) have issued several reviews of selected agencies discussing concerns about commercial and noncommercial prices of spare parts and services. Most of these reports have identified situations in which contracting officers failed to obtain adequate pricing information for justifying price reasonableness. In conclusion, both the DoDIG and the GAO have found that the contracting officers need improved expertise in both understanding and conducting price/cost analysis. The current gap in knowledge contributes to agencies missing cost saving opportunities as well as ventures to improve acquisition outcomes. Exercising appropriate price analysis methods that come from adequate price analysis guidance and training would address this gap. ; Naval Postgraduate School Acquisition Research Program

The Friendship Theorem states that if any two people in a party have exactly one common friend, then there exists a politician who is a friend of everybody. In this paper, we generalize the Friendship Theorem. Let $\lambda$ be any nonnegative integer and $\mu$ be any positive integer. Suppose each pair of friends have exactly $\lambda$ common friends and each pair of strangers have exactly $\mu$ common friends in a party. The corresponding graph is a generalization of strongly regular graphs obtained by relaxing the regularity property on vertex degrees. We prove that either everyone has exactly the same number of friends or there exists a politician who is a friend of everybody. As an immediate consequence, this implies a recent conjecture by Limaye et. al.

The Friendship Theorem states that if any two people in a party have exactly one common friend, then there exists a politician who is a friend of everybody. In this paper, we generalize the Friendship Theorem. Let λ be any nonnegative integer and µ be any positive integer. Suppose each pair of friends have exactly λ common friends and each pair of strangers have exactly µ common friends in a party. The corresponding graph is a generalization of strongly regular graphs obtained by relaxing the regularity property on vertex degrees. We prove that either everyone has exactly the same number of friends or there exists a politician who is a friend of everybody. As an immediate consequence, this implies a recent conjecture by Limaye et. al. ; Naval Postgraduate School

The article of record as published may be located at http://www.combinatorics.org/ojs/index.php/eljc/article/view/v15i1n3 ; The Electronic Journal of Combinatorics 15(1) (2008), #N3 ; The Friendship Theorem states that if any two people in a party have exactly one common friend, then there exists a politician who is a friend of everybody. In this paper, we generalize the Friendship Theorem. Let A be any nonnegative integer and p be any positive integer. Suppose each pair of friends have exactly A common friends and each pair of strangers have exactly p common friends in a party. The corresponding graph is a generalization of strongly regular graphs obtained by relaxing the regularity property on vertex degrees. We prove that either everyone has exactly the same number of friends or there exists a politician who is a friend of everybody. As an immediate consequence, this implies a recent conjecture by Limaye et al.

The article of record as published may be found at https://doi.org/10.3389/fdata.2019.00017 ; Social Media platforms in Cyberspace provide communication channels for individuals, businesses, as well as state and non-state actors (i.e., individuals and groups) to conduct messaging campaigns. What are the spheres of influence that arose around the keyword #Munich on Twitter following an active shooter event at a Munich shopping mall in July 2016? To answer that question in this work, we capture tweets utilizing #Munich beginning 1 h after the shooting was reported, and the data collection ends approximately 1 month later1. We construct both daily networks and a cumulative network from this data. We analyze community evolution using the standard Louvain algorithm, and how the communities change over time to study how they both encourage and discourage the effectiveness of an information messaging campaign. We conclude that the large communities observed in the early stage of the data disappear from the #Munich conversation within 7 days. The politically charged nature of many of these communities suggests their activity is migrated to other Twitter hashtags (i.e., conversation topics). Future analysis of Twitter activity might focus on tracking communities across topics and time.

Social Media platforms in Cyberspace provide communication channels for individuals, businesses, as well as state and non-state actors (i.e., individuals and groups) to conduct messaging campaigns. What are the spheres of influence that arose around the keyword #Munich on Twitter following an active shooter event at a Munich shopping mall in July 2016? To answer that question in this work, we capture tweets utilizing #Munich beginning 1 h after the shooting was reported, and the data collection ends approximately 1 month later. We construct both daily networks and a cumulative network from this data. We analyze community evolution using the standard Louvain algorithm, and how the communities change over time to study how they both encourage and discourage the effectiveness of an information messaging campaign. We conclude that the large communities observed in the early stage of the data disappear from the #Munich conversation within 7 days. The politically charged nature of many of these communities suggests their activity is migrated to other Twitter hashtags (i.e., conversation topics). Future analysis of Twitter activity might focus on tracking communities across topics and time.