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Showing 1 to 20 of 152 for “"unimodal"”.
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Unbounded unimodal search and pursuit problems
A variation of Kraft's inequality is proven for a unimodal search tree. The inequality is used to prove the near optimality of an algorithm for solving the unbounded discrete unimodal search problem. New results on the computational complexity of determining if capture is possible is obtained for …
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Iterated Grid Search Algorithm on Unimodal Criteria
The unimodality of a function seems a simple concept. But in the Euclidean space R^m, m=3,4,..., it is not easy to define. We have an easy tool to find the minimum point of a unimodal function. The goal of this project is to formalize and support distinctive strategies that typically guarantee …
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Testing for Unimodal Relationships between Diversity, Disturbance, and Productivity
Many unimodal ecological theories, though implemented into resource management, remain contentious in the literature and are often analyzed with inappropriate techniques, namely quadratic regressions. Two of these theories, the intermediate disturbance and productivity hypotheses, are assessed as …
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Multimodal implications of a unimodal investment : the benefits measurement
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1980.
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Unimodal, log-concave and Pólya frequency sequences in combinatorics
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mathematics, 1988.
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Studies of one-dimensional unimodal maps in the chaotic regime
… periodic interval we define a different unimodal map. After applying a certain renormalization procedure to this new unimodal map, we find the period doubling fixed point g(x) which depends on the details of the map hλ(x) and the scaling constant α. The thermodynamics and the scaling …
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The distribution of wave heights and periods for seas with unimodal and bimodal power density spectra
… Spectra with a single peak are designated as unimodal and spectra with two peaks as bimodal. Seas are further classified by spectral width, a function of the three lowest spectral moments. The joint distributions of wave heights and periods from seas with narrow spectral widths take the …
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UNDERSTANDING THE MOLECULAR WEIGHT DISTRIBUTION SHAPE-PROPERTY RELATIONSHIP BASED ON LINEAR UNIMODAL AND BIMODAL POLYETHYLENES MODEL SYSTEM
… polymers. Previous studies on comparison of the unimodal and bimodal MWD shape without controlling dispersity, chain branching, phase separation or average molecular weight make it hard to decouple the independent contribution of MWD shape. In this work, we have successfully synthesized unimodal …
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The role of intensity, temporal synchrony, and biogenic amines for unimodal and multimodal integration during learning and memory of honey bees and bumble bees
… I investigated the effects of biogenic amines on unimodal and bimodal PER conditioning in bumble bees expanding our understanding of how octopamine (OA) and dopamine (DA) work in tandem to modulate appetitive learning and memory. My results suggest that the influence of octopamine (OA) and …
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Impact of Central Vision Loss on Eye Movements and Time-to-Contact Judgments
… the interaction between eye movements and unimodal (visual-only) versus multimodal (audiovisual) presentation on TTC estimates. Further, eye movements differ between individuals with normal vision and individuals with central vision loss during navigation tasks. However, no study has …
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Bedload Transport in Gravel-Bed Streams under a wide range of Shields Stresses
… bed material, a gravel bed may have either unimodal or bimodal sediment. This study examines more closely some aspects of bedload transport in gravel-bed streams and proposes explanations based on fluvial mechanics. First, a comparison between perennial and ephemeral gravel-bed streams is …
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A Hybrid Multibiometric System for Personal Identification Based on Face and Iris Traits. The Development of an automated computer system for the identification of humans by integrating facial and iris features using Localization, Feature Extraction, Handcrafted and Deep learning Techniques
… deal with a number of significant limitations of unimodal biometric systems, including sensitivity to noise, population coverage, intra-class variability, non-universality, and vulnerability to spoofing. This PhD thesis is focused on the combination of both the face and the left and right irises, …
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A Hybrid Multibiometric System for Personal Identification Based on Face and Iris Traits. The Development of an automated computer system for the identification of humans by integrating facial and iris features using Localization, Feature Extraction, Handcrafted and Deep learning Techniques.
… deal with a number of significant limitations of unimodal biometric systems, including sensitivity to noise, population coverage, intra-class variability, non-universality, and vulnerability to spoofing. This PhD thesis is focused on the combination of both the face and the left and right irises, …
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Effects of Prenatal Sensory-Evoked Arousal on Postnatal Behavior and Perceptual Responsiveness in Bobwhite Quail (Colinus virginianus)
… bobwhite quail. Exposure to moderate amounts of unimodal prenatal sensory stimulation has been shown to accelerate early intersensory responsiveness, while exposure to concurrent prenatal bimodal sensory stimulation has been shown to interfere with perceptual learning and development. An …
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Experimental Investigation of Gaseous Oxyacetylene Blast Enhancement by the Combustion of Suspended Multimodal Spherical Aluminum Powder
… detonations conducted with the addition of unimodal aluminum particles approximately 1, 10, 30, and 95 μm in diameter. These experiments were controlled by maintaining a particle mass concentration of 200 g/m3, a constant volume of air for particle dispersion, and a consistent size for the …
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Multimodal Non-Contact Sensing of Neonatal Vital Signs Using Radar and Video
… signs such as respiratory rate (RR), using both unimodal (solely video or radar) and multimodal fusion approaches that combine data from both sensors. Preliminary testing was conducted on neonatal simulator mannequins, followed by a clinical study at Tufts Medical Center NICU which collected data …
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A Study on Multimodal AI for Mild Cognitive Impairment Detection
… majority of the existing research is based on unimodal data (e.g., only speech or prosody), but recent studies have shown that multimodality leads to a more accurate prediction of MCI. However, effectively exploiting different modalities is still a big challenge due to the lack of efficient …
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The interactive effects of disturbance and nutrient enrichment on species diversity and biomass of intertidal rocky-shore communities
Unimodal patterns of diversity along gradients of both disturbance and productivity rank amongst the most celebrated generalizations in ecology, known as the Intermediate Disturbance Hypothesis (IOH) and Productivity Diversity Hypothesis. However, doubt about their generality has arisen from …
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