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Search Results: 1 - 10 of 19259 matches for " Richard Tillman "
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The Vertical and Horizontal Spatial-Temporal Conceptual Metaphor Representation of Chinese Temporal Words  [PDF]
Tian Hong, Xianyou He, Richard Tillman, Xueru Zhao, Yumei Deng
Psychology (PSYCH) , 2017, DOI: 10.4236/psych.2017.811111
Abstract: People rely on spatial-temporal metaphor when they talk and think about abstract temporal concept. The purpose of this study is to further investigate the mechanism of the multi-dimensional spatial-temporal conceptual metaphor in Chinese. Using the spatial cuing paradigm, we examined the cognitive impact of the Chinese vertical and horizontal spatial-temporal metaphor, and explored the dominant dimension between the two metaphors in context. The results showed that the processing of temporal concepts for Chinese speakers involved not only the horizontal spatial-temporal metaphor, but also the vertical spatial-temporal metaphor. The horizontal dimension was the dominant dimension of spatial-temporal metaphor in the processing of temporal concepts in Chinese. The findings demonstrated that representation of time depends on representation of space, supporting the Metaphorical Structuring View.
Cysteine Supplementation to Parenteral Nutrition Improves Red Blood Cell Glutathione Concentrations of Critically Ill Preterm Neonates  [PDF]
Oscar R. Herrera, Michael C. Storm, Emma M. Tillman, Richard A. Helms
Food and Nutrition Sciences (FNS) , 2018, DOI: 10.4236/fns.2018.95047
Abstract: Premature neonates have immature antioxidant enzyme systems rendering them more susceptible to oxidative injury. One key antioxidant is glutathione (GSH). The rate limiting amino acid (AA) in GSH production is thought to be cysteine. Critically ill premature neonates who are parenterally fed are often supplemented with additional cysteine, yet the need for cysteine and optimal dose is unknown. This was a prospective, un-blinded, three-group, randomized crossover study aimed to evaluate three doses of cysteine by analyzing red blood cell (RBC) GSH, plasma AA, weight, and nitrogen balance. Neonates were randomized to receive 72 hours of each of the following cysteine doses: 10 mg/g AA, 20 mg/g AA, and 40 mg/g AA. GSH, plasma AAs, weight, and nitrogen balance were evaluated at baseline (after 72 hours of 0 mg/g AA), day three, day six, and day nine. Sixteen patients completed all doses of cysteine, which resulted in significantly increased RBC GSH concentrations over baseline. Plasma concentrations of cystine, total and free cysteine/cystine, glycine and serine increased with cysteine dose. All cysteine doses were associated with adequate weight gain, and positive nitrogen balance. These results are contrary to more recent studies of cysteine effect on RBC GSH concentrations in preterm neonates and infants, but may reflect the severity of illness in our study subjects, where cysteine requirements may be increased.
Tumour Transfer to Bone Graft Donor Site: A Case Report and Review of the Literature of the Mechanism of Seeding
Richard G. Dias,Adesegun Abudu,Simon R. Carter,Robert J. Grimer,Roger M. Tillman
Sarcoma , 2000, DOI: 10.1155/s1357714x00000098
Abstract: Purpose. Transmission of malignant tumour cells to a bone graft donor site is a rare complication of bone grafting.We report a case of seeding of malignant fibrous histiocytoma from the femur to a pelvic bone graft donor site.
A unique, culture-aware, personalized learning environment
Tillman Swinke
International Journal of Emerging Technologies in Learning (iJET) , 2012, DOI: 10.3991/ijet.v7is2.2323
Abstract: This paper examines what current learning systems offer towards the idea of a multi- dimensional learning system. It will show the requirements for a multi-dimensional learning system and that no current system is able to meet them. Therefore a new model is proposed that is not only capable of fulfilling the requirements for cultural diversity but also of satisfying the rising demand for personalization that has been rising in the course of the last twenty years. This new model will enable systems, which bring the personalization of e- learning to the next level.
Ultraviolet-Finite QFT on Curved Space-Times
P. Tillman
Physics , 2010,
Abstract: This paper proposes a different interpretation on the renormalization program of an interacting Klein-Gordon field in curved space-times. Rather than being just another renormalization program we argue that it that it makes the QFT ultraviolet-finite at its foundation. More precisely, we argue that renormalization is a part of the foundation of QFT and that without it the theory is mathematically ill-defined or at the very least incompletely specified.
Deformation Quantization, Quantization, and the Klein-Gordon Equation
P. Tillman
Physics , 2006, DOI: 10.1088/1751-8113/40/25/S55
Abstract: The aim of this proceeding is to give a basic introduction to Deformation Quantization (DQ) to physicists. We compare DQ to canonical quantization and path integral methods. It is described how certain issues such as the roles of associativity, covariance, dynamics, and operator orderings are understood in the context of DQ. Convergence issues in DQ are mentioned. Additionally, we formulate the Klein-Gordon (KG) equation in DQ. Original results are discussed which include the exact construction of the Fedosov star-product on the dS and AdS space-times. Also, the KG equation is written down for these space-times. This is a proceedings to the Second International Conference on Quantum Theories and Renormalization Group in Gravity and Cosmology.
Deformation Quantization: From Quantum Mechanics to Quantum Field Theory
P. Tillman
Physics , 2006,
Abstract: The aim of this paper is to give a basic overview of Deformation Quantization (DQ) to physicists. A summary is given here of some of the key developments over the past thirty years in the context of physics, from quantum mechanics to quantum field theory. Also, we discuss some of the conceptual advantages of DQ and how DQ may be related to algebraic quantum field theory. Additionally, our previous results are summarized which includes the construction of the Fedosov star-product on dS/AdS. One of the goals of these results was to verify that DQ gave the same results as previous analyses of these spaces. Another was to verify that the formal series used in the conventional treatment converged by obtaining exact and nonperturbative results for these spaces.
Explicit Constructions of the Fedosov star on some Lorentzian Space-Times
P. Tillman
Physics , 2006,
Abstract: This paper has been withdrawn by the author due to the fact that the results were found to be done previously.
A primordial theory
George Sparling,Philip Tillman
Physics , 2004,
Abstract: We review the twistor approach to the Zhang-Hu theory of the four-dimensional Quantum Hall effect. We point out the key role played by the group Spin(4,4), as the symmetry group of the boundary. It is argued that this group, which ignores the square root of minus one used in relativity and quantum mechanics, is the focal point of a primordial theory, one where the Cartan concept of triality is paramount, from which the standard theories emerge via a series of phase transitions of the Zhang-Hu fluid. An important role will be played by the Jordan cross-product algebras, particularly the exceptional Jordan algebra associated to the split octaves and by the associated Freudenthal phase space. The geometry and Hamiltonian theory of these spaces is examined in detail. A possible link to the theory of massive particles is outlined.
Fedosov Observables on Constant Curvature Manifolds and the Klein-Gordon Equation
Philip Tillman,George Sparling
Physics , 2006,
Abstract: In this paper we construct the set of quantum mechanical observables in the Fedosov *-formalism (a coordinate invariant way to do quantum mechanics on any manifold M) of a single free particle that lives on a constant curvature manifold with metric signature (p,q). This was done for most but not all constant curvature manifolds. We show that the algebra of all observables in n=p+q dimensions is SO(p+1,q+1) in a nonperturbative calculation. A subgroup of this group is identified as the analogue of the Poincare group in Minkowski space i.e. it is the space of symmetries on the manifolds considered. We then write down a Klein-Gordon (KG) equation given by the the equation p^2|phi>=m^2|phi> for the set of allowed physical states. This result is consistent with previous results on AdS. Furthermore we lay out the standard scheme for the free KG field from the single particle theory. Furthermore we argue that this scheme will work on a general space-time.
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