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Search Results: 1 - 10 of 219775 matches for " C. Love "
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Orbital Approach to High Temperature Superconductivity  [PDF]
Peter Love
Natural Science (NS) , 2019, DOI: 10.4236/ns.2019.111001
Abstract: High temperature superconductivity in cuprates is explained in terms of 3d-orbital capture in copper. In elemental Cu 3d-orbital capture abstracts an electron from the 4 s2 valence orbital, and leaves it as 4 s1. This is known since Cu occurs in Group IB of the Periodic Table. This forms an electron vacancy, or hole, in the valence shell. Therefore, the energy of 3d-orbital capture is stronger than the energy of unpairing of a paired-spin 4 s2 orbital. In cuprates 3d-orbital capture abstracts an electron from a Cu-O covalent bond, and leaves a hole in the excited state orbital. By electron-hole migration the excited state orbital leads to a coordinate covalent bond. This leads to superconductivity. The 3d-orbital process accounts for superconductivity and insulator behavior in cuprates. These results lend credence to the statement that 3d-orbital capture in copper is the cause of high temperature superconductivity.
You don't want to know what you're missing
A. Ross Otto,Bradley C. Love
Judgment and Decision Making , 2010,
Abstract: When people learn to make decisions from experience, a reasonable intuition is that additional relevant information should improve their performance. In contrast, we find that additional information about foregone rewards (i.e., what could have gained at each point by making a different choice) severely hinders participants' ability to repeatedly make choices that maximize long-term gains. We conclude that foregone reward information accentuates the local superiority of short-term options (e.g., consumption) and consequently biases choice away from productive long-term options (e.g., exercise). These conclusions are consistent with a standard reinforcement-learning mechanism that processes information about experienced and forgone rewards. In contrast to related contributions using delay-of-gratification paradigms, we do not posit separate top-down and emotion-driven systems to explain performance. We find that individual and group data are well characterized by a single reinforcement-learning mechanism that combines information about experienced and foregone rewards.
Evaluating Astronomy Literacy of the General Public
C. Love,A. Murphy,S. Bonora
Physics , 2013,
Abstract: A scientifically literate society is important for many different reasons, some of which include democratic and scientific topics. This study was performed in order to identify topics in astronomy and science in general that may not be well understood by the general public. Approximately 1,000 adults at a popular science museum in Philadelphia, PA completed True-False survey questions about basic astronomy concepts. The participants were also asked to provide their age, gender, and highest degree obtained. Although 93 +/- 0.8% of the participants correctly answered that scientists can calculate the age of the Earth, only 58 +/- 2% provided the correct response that scientists can calculate the age of the Universe. Some participants (30 +/- 1%) responded that scientists have found life on Mars. Females scored an average total score of 78 +/- 2%, whereas males scored an average 85 +/- 1%. Participants with an age of 56 and over had an average score of 78 +/- 4% compared to participants under the age of 56 that were found to have an average score of 82 +/- 2%. Lastly, participants' highest degree obtained scaled with number of correct responses, with graduate level degree earners providing the largest amount of correct responses and an average score of 86 +/- 2%.
Inverse Problems for Difference Equations with Quadratic Eigenparameter Dependent Boundary Conditions-II  [PDF]
Sonja Currie, Anne Love
Advances in Pure Mathematics (APM) , 2016, DOI: 10.4236/apm.2016.610051
Abstract: The following inverse problem is solved—given the eigenvalues and the potential b(n) for a difference boundary value problem with quadratic dependence on the eigenparameter, λ, the weights c(n)?can be uniquely reconstructed. The investi-gation is inductive on m where represents the number of unit intervals and the results obtained depend on the specific form of the given boundary conditions. This paper is a sequel to [1] which provided an algorithm for the solution of an analogous inverse problem, where the eigenvalues and weights were given and the potential was uniquely reconstructed. Since the inverse problem considered in this paper contains more unknowns than the inverse problem considered in [1], an additional spectrum is required more often than was the case in [1].
Global Breast Cancer: The Lessons to Bring Home
Silvia C. Formenti,Alan A. Arslan,Susan M. Love
International Journal of Breast Cancer , 2012, DOI: 10.1155/2012/249501
Abstract: Breast cancer is the most common cancer affecting women globally. This paper discusses the current progress in breast cancer in Western countries and focuses on important differences of this disease in low- and middle-income countries (LMCs). It introduces several arguments for applying caution before globalizing some of the US-adopted practices in the screening and management of the disease. Finally, it suggests that studies of breast cancer in LMCs might offer important insights for a more effective management of the problem both in developing as well as developed countries. 1. Introduction Breast cancer is the most common cancer affecting women. Globally, about 1.4 million new cases are diagnosed each year [1]. Breast cancer incidence varies considerably throughout the world; age-standardized incidence is about 4-fold higher in high-income countries in North America and Western Europe compared to countries with the lowest per capita income [2]. A strong correlation between age-standardized incidence of breast cancer and the average gross domestic product per capita can be demonstrated [3]. However, in many low- and middle-income countries (LMCs), incidence is increasing at a faster pace than in developed countries, where the incidence is already high [4]. Several hypotheses for this rapid raise have been proposed. The most common explanation regards the rapid spreading of “westernization” of diet and lifestyle [4], characterized by switching to foods that have a high-energy density while decreasing physical activity, resulting in higher rates of obesity. Diet changes may also result in loss of protective factors associated with traditional diets. For example, westernization of diet in Japan and Japanese immigrants to the US is associated with marked increase of breast cancer incidence and mortality [5]. Changes in women’s reproductive patterns, often as a result of improved socioeconomic conditions, include the occurrence of earlier menarche and delayed or reduced parity, each recognized as additional risk factors of breast cancer [6]. Breast cancer in Singapore’s women exemplifies the impact of these changes as their incidence of breast cancer is rapidly approaching that seen in Europe [7], a worrisome sign of the looming epidemic of breast cancer in other rapidly developing countries such as China and India. In addition, longer lifespan, better policies for reporting disease diagnosis and the introduction of screening, at least in some countries, all contributed to the increasing breast cancer incidence in LMCs. 2. Differences in Epidemiology and
Averaging and sampling for magnetic-observatory hourly data
J. J. Love, V. C. Tsai,J. L. Gannon
Annales Geophysicae (ANGEO) , 2010,
Abstract: A time and frequency-domain analysis is made of the effects of averaging and sampling methods used for constructing magnetic-observatory hourly data values. Using 1-min data as a proxy for continuous, geomagnetic variation, we construct synthetic hourly values of two standard types: instantaneous "spot" measurements and simple 1-h "boxcar" averages. We compare these average-sample types with others: 2-h average, Gaussian, and "brick-wall" low-frequency-pass. Hourly spot measurements provide a statistically unbiased representation of the amplitude range of geomagnetic-field variation, but as a representation of continuous field variation over time, they are significantly affected by aliasing, especially at high latitudes. The 1-h, 2-h, and Gaussian average-samples are affected by a combination of amplitude distortion and aliasing. Brick-wall values are not affected by either amplitude distortion or aliasing, but constructing them is, in an operational setting, relatively more difficult than it is for other average-sample types. It is noteworthy that 1-h average-samples, the present standard for observatory hourly data, have properties similar to Gaussian average-samples that have been optimized for a minimum residual sum of amplitude distortion and aliasing. For 1-h average-samples from medium and low-latitude observatories, the average of the combination of amplitude distortion and aliasing is less than the 5.0 nT accuracy standard established by Intermagnet for modern 1-min data. For medium and low-latitude observatories, average differences between monthly means constructed from 1-min data and monthly means constructed from any of the hourly average-sample types considered here are less than the 1.0 nT resolution of standard databases. We recommend that observatories and World Data Centers continue the standard practice of reporting simple 1-h-average hourly values.
Catchment conceptualisation for examining applicability of chloride mass balance method in an area of historical forest clearance
H. Guan,A. Love,C. T. Simmons,Z. Ding
Hydrology and Earth System Sciences Discussions , 2009,
Abstract: Among various approaches for estimating groundwater recharge, chloride mass balance (CMB) method is one of the most frequently used, in particular, for arid and semiarid regions. Widespread native vegetation clearance, common history in many areas globally, has changed land surface boundary condition, posing a question whether the current system has reached new chloride equilibrium for CMB application. To examine CMB applicability for catchments, conceptual catchment types of various chloride equilibrium conditions are defined. The conceptualization, combined with some local climate conditions, is demonstrated to be useful in examining whether a catchment has reached new chloride equilibrium. The six conceptual catchment types are tested with eleven selected catchments in the Mount Lofty Ranges (MLR), a coastal hilly area in South Australia having experienced historical widespread forest clearance. The results show that six of the eleven catchments match type VI chloride balance condition (chloride non-equilibrium with a gaining stream), with the ratio of stream chloride output over atmospheric chloride input (catchment chloride O/I) ranging from 2 to 4. Two catchments match type V chloride balance condition (chloride non-equilibrium with a losing stream), with catchment chloride O/I values about 0.5. For these catchments, the CMB method is not appropriate to apply. The results also suggest that neither a below-one chloride O/I value nor a low seasonal fluctuation of streamflow chloride concentration (a factor below 4) guarantees a chloride equilibrium condition in the study area. But a large chloride O/I value (above one) and a large fluctuation of streamflow chloride concentration (a factor of 10 and above) generally indicates either a chloride disequilibrium, or cross-catchment water transfer, or both, for which CMB is not applicable. Based on the regression between chloride O/I values and annual precipitation for type VI catchments, a catchment with annual precipitation of 900 mm in MLR has most likely reached new chloride equilibrium, for which CMB can be applied given that no cross-catchment water transfer occurs. CMB is applied for one catchment at chloride equilibrium, resulted in a net groundwater recharge estimate of 30 mm, about 4% of annual precipitation.
Real-Time Strategy Game Training: Emergence of a Cognitive Flexibility Trait
Brian D. Glass, W. Todd Maddox, Bradley C. Love
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0070350
Abstract: Training in action video games can increase the speed of perceptual processing. However, it is unknown whether video-game training can lead to broad-based changes in higher-level competencies such as cognitive flexibility, a core and neurally distributed component of cognition. To determine whether video gaming can enhance cognitive flexibility and, if so, why these changes occur, the current study compares two versions of a real-time strategy (RTS) game. Using a meta-analytic Bayes factor approach, we found that the gaming condition that emphasized maintenance and rapid switching between multiple information and action sources led to a large increase in cognitive flexibility as measured by a wide array of non-video gaming tasks. Theoretically, the results suggest that the distributed brain networks supporting cognitive flexibility can be tuned by engrossing video game experience that stresses maintenance and rapid manipulation of multiple information sources. Practically, these results suggest avenues for increasing cognitive function.
The Gods of Yucatán from A.D. 1560 to 1980
Love, Bruce;
Estudios de cultura maya , 2011,
Abstract: this work presents a review of ethnohistorical writings and ethnographic studies (some by the author) in search of maya deities as they appear in the religious life of the maya people of yucatán. this introductory survey spans more than four centuries, from the 1560s to the 1980s. many of the gods of the early colonial period continue living today in the indigenous communities of the peninsula, while others have disappeared completely. this article traces their presence or absence over time and proposes that their disappearance or survival is a reflection of their role in maya society. the patron gods of social/civic groups have disappeared while the agricultural gods of the forest and the sky survive today.
Competir y ganar: Calidad de los candidatos en las elecciones legislativas de 2006 en México
Love, Gregory;
Política y gobierno , 2009,
Abstract: the article argues that in the 2006 federal chamber of deputies election, individual candidate traits and experience affected electoral outcomes. analyses were conducted using a unique dataset of biographical information for 171 candidates in 57 randomly drawn districts. the findings demonstrate that candidates mattered in the recent federal legislative elections. additionally, they show that the common definition of "high quality" candidates (previous office holders) is insufficient in the mexican case. the second part of the article analyzes how differing types of candidates were nominated by each party/pact, and examines how the types of nominated candidates can be partially predicted based on the party's nominating rules and their pool of members with previous local electoral success.
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