Smart experimental designs provide military decision-makers with new insights from agent-based simulations

Naval Postgraduate School RESEARCH, 13, 2, Naval Postgraduate School, Monterey, CA, 2003, pp. 20-21, 57-59, 63

Interplay between the magnetic anisotropy contributions of Cobalt nanowires

We report on the magnetic properties and the crystallographic structure of the cobalt nanowire arrays as a function of their nanoscale dimensions. X-ray diffraction measurements show the appearance of an in-plane HCP-Co phase for nanowires with 50 nm diameter, suggesting a partial reorientation of the magnetocrystalline anisotropy axis along the membrane plane with increasing pore diameter. No significant changes in the magnetic behavior of the nanowire system are observed with decreasing temperature, indicating that the effective magnetoelastic anisotropy does not play a dominant role in the remagnetization processes of individual nanowires. An enhancement of the total magnetic anisotropy is found at room temperature with a decreasing nanowire diameter-to-length ratio (d/L), a result that is quantitatively analyzed on the basis of a simplified shape anisotropy model.Comment: 8 pages, 4 figure

Common Radio Resource Management Policy for Multimedia Traffic in Beyond 3G Heterogeneous Wireless Systems

Beyond 3G wireless systems will be composed of a variety of Radio Access Technologies (RATs) with different, but also complementary, performance and technical characteristics. To exploit such diversity while guaranteeing the interoperability and efficient management of the different RATs, common radio resource management (CRRM) techniques need to be defined. This work proposes and evaluates a CRRM policy that simultaneously assigns to each user an adequate combination of RAT and number of radio resources within such RAT to guarantee its QoS requirements. The proposed CRRM technique is based on linear objective functions and programming tools

User QoS-based Multi-Channel Assignment Schemes under Multimedia Traffic Conditions

The implementation of multi-channel assignment policies can improve a mobile’s network performance by increasing the user throughput and reducing transmission delays. However, to define efficient distribution policies, the varying service demands and the search for user QoS fairness should be considered under multimedia traffic scenarios. In this context, this paper proposes and evaluates novel bankruptcy and utility-based multi-channel distribution schemes aimed at maximising the resource’s efficiency and guaranteeing user QoS fairness

ALMA observations of the Red Rectangle, a preliminary analysis

We aim to study equatorial disks in rotation and axial outflows in post-AGB objects, as to disclose the formation and shaping mechanisms in planetary nebulae. So far, both disks and outflows had not been observed simultaneously. We have obtained high-quality ALMA observations of 12CO and 13CO J=3-2 and 12CO J=6-5 line emission in the Red Rectangle, the only post-AGB/protoplanetary object in which a disk in rotation has been mapped up to date. These observations provide an unprecedented description of the complex structure of this source. Together with an equatorial disk in rotation, we find a low-velocity outflow that occupies more or less the region placed between the disk and the optical X-shaped nebula. From our observations and preliminary modeling of the data, we confirm the previously known properties of the disk and obtain a first description of the structure, dynamics, and physical conditions of the outflow.Comment: 5 pages, 5 figure

Improving Navy MPTE Studies with Model-Driven Big Data

The goal of this research was to improve upon the ability of OPNAV N1 analysts to quickly and efficiently obtain experiment-based information from their computational models. The enhanced information will enable N1’s analysts to better support Navy leadership in resource and policy decisions that shape the future Navy and help it retain and develop its most talented Sailors. This project built on previous collaborations with N1 using data farming to enhance the information gleaned from their Navy talent management models, such as the Officer Strategic Analysis Model (OSAM) model, the Production Resource Optimization (PRO) model, and the Navy Total Force Strength Model (NTFSM). During this research period, (1) Ensign William Desousa (2015) investigated the behavior of economic inputs in NTFSM; (2) Lieutenant Peter Bazalaki (2016) used the new data farming capabilities we developed in OSAM to investigate Surface Warfare Officer (SWO) inventory across a breadth of possibilities; and (3) Lieutenant Allison Hogarth (2016) built, tested, and demonstrated a user interface in Excel that enables users of the PRO model to automatically execute a sophisticated design of experiments—the tool that enables this new capability is known as Production Resource Optimization Model With Experimental Design (PROMWED). In addition to working with the student-officers, the faculty supporting this project performed an empirical study of statistical software packages that may provide better understanding of the high-dimensional behavior of manpower models in the future (Erickson, Ankenman, & Sanchez 2016).Naval Research ProgramPrepared for Topic Sponsor: OPNAV N1; Research POC Name: Mr. Ian AndersoNPS-N16-N154-

Advancing the Application of Design of Experiments to Synthetic Theater Operations Research Model Data

NPS NRP Executive SummaryNavy leadership is interested in initiatives that can potentially increase the responsiveness of campaign analysis. Simulation-based campaign analysis is used to measure risk for investment options in how best to equip, organize, supply, maintain, train, and employ our naval forces. The Synthetic Theater Operations Research Model (STORM) is a stochastic simulation model used to support campaign analysis by the U.S. Navy, Marine Corps, and Air Force. Building, testing, running, and analyzing campaign scenarios in STORM is a complex, time-consuming process. A simulated campaign may span months, involve scores of ships and battalions, hundreds of aircraft and installations, all executing thousands of interconnected missions involving numerous events in time and space. Creating, testing, and approving the inputs for a single design point (DP) requires a significant investment in analysts’ time and computing resources. Consequently, there are limits on the number of DPs that can be produced, executed, and analyzed during a study’s timeframe.N8 - Integration of Capabilities & ResourcesThis research is supported by funding from the Naval Postgraduate School, Naval Research Program (PE 0605853N/2098).Approved for public release. Distribution is unlimited

Multi-Channel Radio Resource Distribution Policies in Heterogeneous Traffic Scenarios

Multi-channel operation in wireless systems has been proposed to increase user throughput and reduce transmission delays. However, multi-channel operation requires adequate resource allocation policies to guarantee user fairness and avoid channel access stagnation. The definition of such policies is particularly challenging in heterogeneous traffic scenarios where each traffic service has different quality of service requirements. In this context, this work proposes and evaluates various multichannel radio resource distribution policies designed to operate under heterogeneous traffic environments. In particular, this paper proposes the application of bankruptcy policies to guarantee user fairness, and compares their performance to other schemes. The proposed policies can also be extended to manage radio resources in heterogeneous wireless systems

Efficiently Using Families of Diverse Models to Better Inform Decision Makers in Objective and Repeatable Ways

NPS NRP Project PosterThe Marine Corps seeks to integrate analytical processes that develop actionable insights for decision makers across its enterprise. One supporting goal in this endeavor is to develop a methodology for implementing a wargame-analytic continuum by formally linking outcomes of wargames with more traditional constructive closed-form simulations. The primary research objective is to explore methods and tools that provide the greatest utility when integrating wargames with constructive simulations. As part of this, we will develop, assess, and document a translation/transformation process used to convert a human-in-the-loop wargaming activity into the analytic domain, highlighting judgment calls and issues, and how they were resolved. The research will be done in support of one or more current Marine Corps analysis issues. The SEED Center will focus on constructive simulations that augment other analyses by other organizations. Candidate analysis "partners" include OAD, MCWL, and NPS. Wargaming activities may include NPS, MCWL, and others. MCWL live-fire events may also be leveraged or informed. In addition to regular reviews, the research deliverables will include: (1) A final brief and/or technical report and student theses (if applicable); (2) All findings, methods, and data used in the study, as well as guidance on how the Marines can most efficiently acquire and organically use wargames within an analytic continuum; and (3) Appropriate conference or journal papers related to this research.Marine Corps Modeling & Simulation Office (MCMSO)HQMC Combat Development and Integration (CD&I)This research is supported by funding from the Naval Postgraduate School, Naval Research Program (PE 0605853N/2098). https://nps.edu/nrpChief of Naval Operations (CNO)Approved for public release. Distribution is unlimited.

Efficiently Using Families of Diverse Models to Better Inform Decision Makers in Objective and Repeatable Ways

NPS NRP Executive SummaryThe Marine Corps seeks to integrate analytical processes that develop actionable insights for decision makers across its enterprise. One supporting goal in this endeavor is to develop a methodology for implementing a wargame-analytic continuum by formally linking outcomes of wargames with more traditional constructive closed-form simulations. The primary research objective is to explore methods and tools that provide the greatest utility when integrating wargames with constructive simulations. As part of this, we will develop, assess, and document a translation/transformation process used to convert a human-in-the-loop wargaming activity into the analytic domain, highlighting judgment calls and issues, and how they were resolved. The research will be done in support of one or more current Marine Corps analysis issues. The SEED Center will focus on constructive simulations that augment other analyses by other organizations. Candidate analysis "partners" include OAD, MCWL, and NPS. Wargaming activities may include NPS, MCWL, and others. MCWL live-fire events may also be leveraged or informed. In addition to regular reviews, the research deliverables will include: (1) A final brief and/or technical report and student theses (if applicable); (2) All findings, methods, and data used in the study, as well as guidance on how the Marines can most efficiently acquire and organically use wargames within an analytic continuum; and (3) Appropriate conference or journal papers related to this research.Marine Corps Modeling & Simulation Office (MCMSO)HQMC Combat Development and Integration (CD&I)This research is supported by funding from the Naval Postgraduate School, Naval Research Program (PE 0605853N/2098). https://nps.edu/nrpChief of Naval Operations (CNO)Approved for public release. Distribution is unlimited.