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Emerging technologies are bringing significant changes to the character of warfare. One such emerging technology, autonomous weapon systems (AWS), is proving increasingly crucial for the United States to maintain its technological superiority over its adversaries. However, AWS brings increasingly complex challenges that demand legal, ethical, and operational considerations. The thesis asks a question related directly to current DOD policy on AWS: how can a human operator apply appropriate judgment during future AWS employment? Using authority, responsibility, and accountability as an analytical framework, the thesis builds upon U.S. policy and strategy with respect to autonomy in weapon systems, international law considerations, and the application of AWS in an operational environment. It uses case studies of the 1988 U.S.S. Vincennes incident and 2003 Operation Iraqi Freedom Patriot fratricides to examine how human judgment was executed alongside autonomous functions within weapon systems, providing lessons learned for AWS research, development, and implementation. The thesis uncovers critical ideas for keeping a human operator from losing control by remaining involved with specific oversight measures—allowing appropriate judgment to be applied during the employment process., Lieutenant Colonel, United States Air Force, Approved for public release. Distribution is unlimited.

Octopus predation and species selection contribute to community structure in benthic habitats, where plastic pollution accumulates. This study investigated how the bioactive plastic additive oleamide alters trophic interactions and behaviors of the common octopus (Octopus vulgaris) and its prey. We quantified activity budgets and trophic interactions for octopuses and multiple prey types (hermit crabs, free-living crabs, bivalves, and gastropods) before and after exposure to oleamide. Our analysis suggested that some taxa (octopuses and hermit crabs) exhibit more active behaviors during oleamide exposure. Free living crabs responded primarily to the threat of octopus predation, while other taxa did not show clear behavioral responses. Exposure to oleamide increased trophic interactions and the probability of mobile prey taxa being observed on the same side of the aquarium as the octopus, thus increasing the opportunity for predation. Our results support previous research showing that plastic leachates can impair decision-making, making prey more susceptible to predation., 2023, Includes bibliography., Degree granted: Thesis (MS)--Florida Atlantic University, 2023., Collection: FAU Electronic Theses and Dissertations Collection

By regulating the abundance of prey populations, predators can directly and indirectly influence food web interactions in ways that influence ecosystem function. Predator functional responses quantify how predator foraging rate changes with prey abundance. Due to the large numbers of individuals needed for these experiments, most studies are conducted on small, abundant taxa. Consequently, we know relatively little about the functional responses of many marine taxa, especially those that are large and highly mobile. We present a novel method for studying predator foraging behaviors by integrating two innovative approaches: passive acoustics to document the occurrence of underwater predation events in concert with a recently developed statistical method that uses the times between predation events to estimate functional response parameters. We demonstrate and expand on the application of these methods by quantifying the shape of the predator functional responses for whitespotted eagle rays (Aetobatus narinari) preying on hard clams (Mercenaria mercenaria)., 2023, Includes bibliography., Degree granted: Thesis (MS)--Florida Atlantic University, 2023., Collection: FAU Electronic Theses and Dissertations Collection

Complex life cycles are common across parasite taxa and frequently require trophic transfer of parasites from prey to predator; however, studies on parasite-host interactions often neglect variation in parasite life histories. Here I use two focal freshwater digenetic trematode species, Halipegus occidualis tongueworms and Haematoloechus complexus lungworms, as an empirical system to investigate how parasite life history traits drive host-parasite interactions across the life cycle. To examine how parasite life history and host ecology influence parasite genetic patterns, I characterized the genetic diversity of within-host infrapopulations, as well as overall population genetic structure, of sympatric tongueworm and lungworm populations. Infection load and genetic diversity of host-level parasite infrapopulations increased with host trophic level, highlighting the benefits of trophic transfer and multihost life cycles. Concurrently, first intermediate host population dynamics and dispersal ability played a role in predicting population-level parasite genetic diversity and structure., 2023, Includes bibliography., Degree granted: Dissertation (PhD)--Florida Atlantic University, 2023., Collection: FAU Electronic Theses and Dissertations Collection

Pleurogonius malaclemys is a digenean trematode with a life cycle that begins in Ilyanassa obsoleta as a first and second intermediate host and Malaclemys terrapin as a definitive host. The fluke matures and reproduces within terrapins and, therefore, relies on terrapins for dispersal. Thus, we hypothesized that the genetic structure of flukes would reflect contemporary changes in the connectivity of terrapin populations. Flukes were sampled by dissecting mudsnails collected from eight sites along the eastern United States. Following amplification of the COI mitochondrial marker, 21 haplotypes were identified and a high degree of structure was detected. We propose that this suggests the parasite could serve as a tool for monitoring terrapin populations. This study sets a foundation for the genetic diversity of the fluke, and provides a first step towards developing the species as a proxy for studying terrapin population size, connectivity, and health, which may help conserve both species., 2023, Includes bibliography., Degree granted: Thesis (MS)--Florida Atlantic University, 2023., Collection: FAU Electronic Theses and Dissertations Collection

The purpose of this thesis is to explore and define the framework for a type of military development strategy that links technological decisions to strategic effects—technology strategy. This study is novel, as most approaches to technology strategy focus on producing technology as an end in itself instead of focusing on technology development and acquisition as the principal means for achieving strategic effects. By placing technology as the means and strategic effects as the ends, this study deduces an original, perhaps seminal, description of technology strategy and a framework for its formulation. Arms-racing case studies and an exploration of offense-defense theory structure this exploration and enable the observation of technology strategy’s core characteristics, which are its relationships to doctrinal innovation and organizational design, forms or templates, approaches to acquisition, and potential pitfalls. The structural components of the technology strategy concept illuminated are then arranged in a proposed taxonomy that fits within the U.S. military’s joint concept development process. Beyond the descriptive and structural components, this study also identifies notable best practices in the application of technology strategy, particularly those that an effective technology strategy should encompass—both the decisions surrounding which weapons, transportation, and information systems to invest in, and their implications, in practice, for organization and doctrine.