DOD Acquisition Structures for a Dynamic World: A Case Study of Land Warrior vs TALOS

The United States Special Operations Command (USSOCOM) is revolutionizing the capabilities of the warfighter with the Tactical Assault Light Operator Suit (TALOS) program. The program will equip USSOCOM operators with a powered, armored, exoskeleton to enhance their survivability, lethality, and mobility. The project launched in 2013, with a functional prototype scheduled to be complete in 2018. The aggressive development timeline necessitated that USSOCOM use a novel acquisition structure—the Joint Acquisition Task Force (JATF). The JATF structure mandates a government team as the lead integrator, consisting of acquisition personnel, engineers, and users. This study compared the TALOS acquisition structure to that of Land Warrior, a similar project in regards to scope that used a traditional acquisition structure. The Land Warrior program launched in 1993, underwent numerous scope changes, and was eventually cancelled in 2007 with only limited fielding. This study identified that a root cause for Land Warrior’s cancellation is that its acquisition structure failed to capitalize on commercial innovations and changing requirements. These issues are critical considering the increasingly rapid advances in technology and the dynamic nature of the global socio-political climate. Meanwhile, the JATF structure allowed USSOCOM to avoid many of the pitfalls that Land Warrior experienced. This study analyzed developments to date to collect lessons learned from the TALOS project, focusing on its ability to capture innovation. This analysis found that the JATF structure allowed TALOS to foster innovation and account for changing requirements in a dynamic world

An Experimental Mixed Methods Pilot Study for U.S. Army Infantry Soldiers - Higher Levels of Combined Immersion and Embodiment in Simulation-Based Training Capabilities Show Positive Effects on Emotional Impact and Relationships to Learning Outcomes

This pilot study examines the impact of combined immersion and embodiment on learning and emotional outcomes. The results are intended to better enable U.S. Army senior leaders to decide if dismounted infantry Soldiers would benefit from a more immersive simulation-based training capability. The experiment\u27s between-subject design included a sample of 15 participants randomly assigned to one of three system configurations representing different levels of combined immersion and embodiment. The control group was a typical desktop, and the two experimental groups were a typical configuration of a Virtual Reality headset (VR) and a novel configuration using VR supported by an omnidirectional treadmill (ODT) for full body exploration and interaction. Unique from similar studies, this pilot study allows for an analysis of the Infinadeck ODT\u27s impact on learning outcomes and the value of pairing tasks by type with various levels of immersion. Each condition accessed the same realistically modeled geospatial virtual environment (VE), the UCF Virtual Arboretum, and completed the same pre and post VE-interaction measurement instruments. These tests included complicated and complex information. Declarative information involved listing plants/communities native to central Florida (complicated tasks) while the situational awareness measurement required participants to draw a sketch map (complex task). The Kruskal-Wallis non-parametric statistical test showed no difference between conditions on learning outcomes. The non-parametric Spearman correlation statistical test showed many significant relationships between the system configuration and emotional outcomes. Graphical representations of the data combined with quantitative, qualitative, and correlational data suggest a larger sample size is required to increase power to answer this research question. This study found a strong trend which indicates learning outcomes are affected by task type and significant correlations between emotions important for learning outcomes increased with combined immersion and embodiment

THE EFFECTS OF BODY ARMOR ON LOWER BACK AND KNEE BIOMECHANICS DURING BASIC AND MILITARY INSPIRED TASKS

With increased military personal protection equipment, body armor, comes the addition of carried load. Such person protection in recent history has been instrumental in combating the imminent threats (e.g., improvised explosive devices) of hostile environments, preventing otherwise lethal injuries. However, body armor has been suggested to degrade warfighters’ performance and compound the risk of musculoskeletal injuries. Both performance and risk of injury are intensely related to joint biomechanics. Therefore the objective of this project was set to determine the immediate and prolonged effects of wearing body armor on biomechanics of the lower back and knee. A randomized cross-over study design, wherein 12 sex-balanced, physically fit, young participants completed a series of tests before and after 45 min of treadmill walking with and without body armor. Tests included two simple tests (i.e., toe-touch and two-legged squat), two military inspired tests (i.e., box drop and prone to standing) and four knee torque tests (i.e., maximum isometric contraction of knee flexors and extensors, and concentric and eccentric isokinetic contraction of knee flexors and extensors. During these tests, kinematic, kinetic and torque measurements were used to investigate the immediate and prolonged effects of exposure to body armor on several measures of knee and lower back mechanics related to performance and risk of injuries. For the simple tests, the immediate effects of body armor were an increase of \u3e 40 ms (p ≤ 0.02) in flexion duration of the dominant joint and an ~1 s (p ≤ 0.02) increase in overall test duration as well as an ~18% (p = 0.03) increase in the lumbopelvic rhythm ratio near mid-range trunk flexion. For the military inspired tests, the immediate effects of body armor were an increase of ≥ 0.02 s (p ≤ 0.001) in temporal test durations and an increase of ~158 N (p = 0.01) box drop peak ground reaction force. Finally during the dynamometer testing, the BA condition was found to cause a greater reduction, ~10 N•m, in the maximum isometric strength of knee flexors (p = 0.04) and an increase (p ≤ 0.03) of strength ratios compared to the no armor condition

An Approach to Modeling Simulated Military Human-agent Teaming

With the rise of human-agent teaming (HAT), a new cycle of scientific discovery commenced. Through scientific discovery, a number of theories of constructs in HAT were developed, however, an overarching model is lacking that elucidates the relative importance of these constructs in relation to human performance. The main objective of this research was to develop a model of simulated military HAT and to validate it against selected empirical data. Experimental data borrowed from four simulated military HAT studies were used to test the proposed Core model. The Core model was assumed to be directly affecting task performance and consisted of constructs related to Task Composition, Task Perception, and the qualities that each team member (Human/Agent Qualities) brings to the team. The available experimental data were tested against the null model: everything, within and between these Core sections, are equal contributors to hit rate. Furthermore, in order to validate the Core model, a validation approach was developed based on relative importance, wherein the outcome was a proportional value and followed a beta distribution (Ferrari & Cribari-Neto, 2004). This new modeling approach consisted of (1) application of dominance analysis (DA; Azen & Budescu, 2003; Budescu, 1993) to determine the most important contributors to task performance, (2) establishing robustness and generalizability of the dominance outcome through bootstrap procedures (Azen & Budescu, 2003; Efron, 1981), and (3) combining the dominant predictors into a full beta regression model to evaluate the fit and significance of the model (Ferrari & Cribari-Neto, 2004). DA of all four experimental studies examined in this research led to rejecting the null hypotheses. Constructs in the proposed Core model were not equally important to performance in these simulated military HAT studies. Results showed consistently similar yet different dominance patterns in relation to human performance. Attempts were made to elucidate the most important predictors of task performance. Analyses unveiled the importance of taking task difficulty into consideration when assessing the relative importance within the proposed Core model

Proceedings, MSVSCC 2012

Proceedings of the 6th Annual Modeling, Simulation & Visualization Student Capstone Conference held on April 19, 2012 at VMASC in Suffolk, Virginia

Investigation Of Tactile Displays For Robot To Human Communication

Improvements in autonomous systems technology and a growing demand within military operations are spurring a revolution in Human-Robot Interaction (HRI). These mixed-initiative human-robot teams are enabled by Multi-Modal Communication (MMC), which supports redundancy and levels of communication that are more robust than single mode interaction. (Bischoff & Graefe, 2002; Partan & Marler, 1999). Tactile communication via vibrotactile displays is an emerging technology, potentially beneficial to advancing HRI. Incorporation of tactile displays within MMC requires developing messages equivalent in communication power to speech and visual signals used in the military. Toward that end, two experiments were performed to investigate the feasibility of a tactile language using a lexicon of standardized tactons (tactile icons) within a sentence structure for communication of messages for robot to human communication. Experiment one evaluated tactons from the literature with standardized parameters grouped into categories (directional, dynamic, and static) based on the nature and meaning of the patterns to inform design of a tactile syntax. Findings of this experiment revealed directional tactons showed better performance than non-directional tactons, therefore syntax for experiment two composed of a non-directional and a directional tacton was more likely to show performance better than chance. Experiment two tested the syntax structure of equally performing tactons identified from experiment one, revealing participants’ ability to interpret tactile sentences better than chance with or without the presence of an independent work imperative task. This finding advanced the state of the art in tactile displays from one to two word phrases facilitating inclusion of the tactile modality within MMC for HR

From capability to concept : fusion of systems analysis techniques for derivation of future soldier systems

The intent of this thesis is to define a set of processes for use within UK Government dismounted soldier systems research that will provide stakeholders with auditable and traceable information to understand gaps in military capability and justify future procurement decisions. The need for this approach is linked to organisational shifts within the UK Ministry of Defence, and more specifically Government research with the move towards procurement of capability rather than equipment. In conjunction with reducing defence budgets and increased scrutiny, there is a need to prioritise spending to those areas that will provide the most significant enhancement to operational effectiveness. The proposed process suite provides underpinning data to support Government decisions, from definition of military need through to concept design and prioritisation of future research activities. The approach is grounded in the field of systems thinking and systems engineering providing the logical and systematic constructs required for highly complex systems where the human is a central focus. A novel fusion of existing systems tools and techniques enables both subjective data from domain experts and objective data in the form of operational analysis and field trials to be utilised for analysis across the five NATO capability domains, with output defining the relative importance of survivability, sustainability, mobility, lethality and C4I in the context of operational and strategic level military goals as well as wider challenges represented by the doctrinal defence lines of development. Future developments should include alignment with developing pan-MoD initiatives in the form of MODAF, if required by the customer organisation. This would enable generic versions of the process suite to be applied to any defence domain and problem.EThOS - Electronic Theses Online ServiceGBUnited Kingdo

Proceedings, MSVSCC 2011

Proceedings of the 5th Annual Modeling, Simulation & Visualization Student Capstone Conference held on April 14, 2011 at VMASC in Suffolk, Virginia. 186 pp

The Limits Of DIS: Final Report

Two reports on the computational capabilities of formal DIS networks in simulating real physical events and the demands placed on DIS in the future as projected by the DIS user community.; Contents: 50514 01 Purpose -- Background -- Phase 1 -- Phase 2 --Appendices -- A On the limitation of DIS by Thomas L. Clarke -- Appendix B Useful communications in distributed interactive simulation by Scott H. Smith --Appendix C Useful communications in distributed interactive simulation (viewgraphs) by Scott H. Smith