1,093 research outputs found
Hegemony and socialisation of the mass public: the case of postwar Japan's cooperation with the United States on China policy
The constructivism-inspired study on hegemony focuses on the dominant state's ability to shape the beliefs and values of ruling elites in secondary states as a basis of hegemony while paying less attention to the attitude of the mass public in secondary states toward hegemony and the effects of its ‘socialisation’ with hegemonic ideas. This article provides a conceptual framework for studying the relations between hegemony and the mass-public of secondary states and then subjecting it to a preliminary test against postwar Japan's cooperation with the United States on China policy.
The main argument of this article is that hegemony may be strengthened and maintained if the mass public of secondary states is socialised with hegemonic conceptions of world order, state identities and underlying ideologies, and acquires an independent constraint on hegemony. The mass public's socialisation with hegemonic ideas, which amounts to a cultural transformation in secondary states, may take place as a result of propagation by the dominant state and secondary state elites, or as a result of important international and domestic events caused by the hegemon, and then come to feed back on the political structures and processes of secondary states in ways conducive to the maintenance of hegemony. When hegemonic ideas are firmly embedded in the security culture of secondary states, ruling elites in those states may cooperate with the hegemon because they themselves genuinely embrace hegemonic ideas. More importantly, some ruling elites may cooperate with the hegemon out of political expediency as the hegemon-induced cultural transformation may change political structures and processes in such ways as to link the ruling elites' political legitimacy closely with secondary states' continued support for hegemony.published_or_final_versio
Interplay between topological insulators and superconductors
Topological insulators are insulating in the bulk but possess metallic surface states protected by time-reversal symmetry. Here, we report on a detailed electronic transport study in high-quality Bi 2Se 3 topological insulator thin films contacted by superconducting (In, Al, and W) electrodes. The resistance of the film shows an abrupt and significant upturn when the electrodes become superconducting. In turn, the Bi 2Se 3 film greatly weakens the superconductivity of the electrodes, significantly reducing both their transition temperatures and their critical fields. A possible interpretation of these results is that the superconducting electrodes are accessing the surface states and the experimental results are consequences of the interplay between the Cooper pairs of the electrodes and the spin-polarized current of the surface states in Bi 2Se 3. © 2012 American Physical Society.published_or_final_versio
Testing the viability of measuring intraocular pressure using soundwaves from a smartphone
Abstract Early detection of increasing values of intraocular pressure (IOP) due to glaucoma can prevent severe ocular diseases and ultimately, prevent loss of vision. Currently, the need for an accurate, mobile measurement of IOP that shows no correlation to central corneal thickness is unmet within the modern healthcare practices. There is a potential to utilize soundwaves as a mobile measurement method and therefore, the relationship between IOP and the reflection coefficient of sound waves is investigated. Simulations are conducted using COMSOL Multiphysics to provide theoretical confirmation of the worthiness of the experiment. An experiment is conducted to further investigate the relationship between the internal pressure of an object and its acoustic reflection coefficient. The experiment exploits the use of hydrostatic pressure to determine internal pressure, and the reflection coefficient is measured and analyzed. An initial experiment is conducted to identify the resonant frequency of the object and the optimal frequency for maximizing reflection. The experiment shows comprehensively that there is a relationship between the internal pressure of an object and its acoustic reflection coefficient, providing a confirmation of the theory that would allow mobile measurements of IOP to be conducted with the use of a smart phone
Vulnerability-based spatial sampling stratification for the National Children\u27s Study, Worcester County, Massachusetts: capturing health-relevant environmental and sociodemographic variability
BACKGROUND: The National Children\u27s Study is the most ambitious study ever attempted in the United States to assess how environmental factors impact child health and development. It aims to follow 100,000 children from gestation until 21 years of age. Success requires breaking new interdisciplinary ground, starting with how to select the sample of \u3e 1,000 children in each of 105 study sites; no standardized protocol exists for stratification of the target population by factoring in the diverse environments it inhabits. Worcester County, Massachusetts, like other sites, stratifies according to local conditions and local knowledge, subject to probability sampling rules.
OBJECTIVES: We answer the following questions: How do we divide Worcester County into viable strata that represent its health-relevant environmental and sociodemographic heterogeneity, subject to sampling rules? What potential does our approach have to inform stratification at other sites?
RESULTS: We developed a multivariable, vulnerability-based method for spatial sampling consisting of two descriptive indices: a hazards/stressors exposure index (comprising three proxy variables), and an adaptive capacity/sociodemographic character index (five variables). Multivariable, health-relevant stratification at the start of the study may improve detection power for environment-child health associations down the line. Eighteen strata capture countywide heterogeneity in the indices and have optimal relative homogeneity within each. They achieve comparable expected birth counts and conform to local concepts of space.
CONCLUSION: The approach offers moderate to high potential to inform other sites, limited by intersite differences in data availability, geodemographics, and technical capacity. Energetic community engagement from the start promotes local stratification coherence, plus vital researcher-community trust and co-ownership for sustainability
Finite-time control and synchronization for memristor-based chaotic system via impulsive adaptive strategy
Digenean parasites of Chinese marine fishes: a list of species, hosts and geographical distribution
In the literature, 630 species of Digenea (Trematoda) have been reported from Chinese marine fishes. These belong to 209 genera and 35 families. The names of these species, along with their hosts, geographical distribution and records, are listed in this paper
The Added Value of Radiographs in Diagnosing Knee Osteoarthritis Is Similar for General Practitioners and Secondary Care Physicians; Data from the CHECK Early Osteoarthritis Cohort
Objective: The purpose of this study was to evaluate the added value of radiographs for
diagnosing knee osteoarthritis (KOA) by general practitioners (GPs) and secondary care physicians
(SPs). Methods: Seventeen GPs and nineteen SPs were recruited to evaluate 1185 knees from the
CHECK cohort (presenters with knee pain in primary care) for the presence of clinically relevant
osteoarthritis (OA) during follow-up. Experts were required to make diagnoses independently,
first based on clinical data only and then on clinical plus radiographic data, and to provide certainty
scores (ranging from 1 to 100, where 1 was “certainly no OA” and 100 was “certainly OA”).
Next, experts held consensus meetings to agree on the final diagnosis. With the final diagnosis
as gold standard, diagnostic indicators were calculated (sensitivity, specificity, positive/negative
predictive value, accuracy and positive/negative likelihood ratio) for all knees, as well as for
clinically “certain” and “uncertain” knees, respectively. Student paired t-tests compared certainty
scores. Results: Most diagnoses of GPs (86%) and SPs (82%) were “consistent” after assessment of
radiographic data. Diagnostic indicators improved similarly for GPs and SPs after evaluating the
radiographic data, but only improved relevantly in clinically “uncertain” knees. Radiographs added
some certainty to “consistent” OA knees (GP 69 vs. 72, p < 0.001; SP 70 vs. 77, p < 0.001), but not to the
consistent no OA knees (GP 21 vs. 22, p = 0.16; SP 20 vs. 21, p = 0.04). Conclusions: The added value
of radiographs is similar for GP and SP, in terms of diagnostic accuracy and certainty. Radiographs
appear to be redundant when clinicians are certain of their clinical diagnosi
Molecular crowding defines a common origin for the Warburg effect in proliferating cells and the lactate threshold in muscle physiology
Aerobic glycolysis is a seemingly wasteful mode of ATP production that is seen both in rapidly proliferating mammalian cells and highly active contracting muscles, but whether there is a common origin for its presence in these widely different systems is unknown. To study this issue, here we develop a model of human central metabolism that incorporates a solvent capacity constraint of metabolic enzymes and mitochondria, accounting for their occupied volume densities, while assuming glucose and/or fatty acid utilization. The model demonstrates that activation of aerobic glycolysis is favored above a threshold metabolic rate in both rapidly proliferating cells and heavily contracting muscles, because it provides higher ATP yield per volume density than mitochondrial oxidative phosphorylation. In the case of muscle physiology, the model also predicts that before the lactate switch, fatty acid oxidation increases, reaches a maximum, and then decreases to zero with concomitant increase in glucose utilization, in agreement with the empirical evidence. These results are further corroborated by a larger scale model, including biosynthesis of major cell biomass components. The larger scale model also predicts that in proliferating cells the lactate switch is accompanied by activation of glutaminolysis, another distinctive feature of the Warburg effect. In conclusion, intracellular molecular crowding is a fundamental constraint for cell metabolism in both rapidly proliferating- and non-proliferating cells with high metabolic demand. Addition of this constraint to metabolic flux balance models can explain several observations of mammalian cell metabolism under steady state conditions
Insights from Modeling the 3D Structure of New Delhi Metallo-β-Lactamse and Its Binding Interactions with Antibiotic Drugs
New Delhi metallo-beta-lactamase (NDM-1) is an enzyme that makes bacteria resistant to a broad range of beta-lactam antibiotic drugs. This is because it can inactivate most beta-lactam antibiotic drugs by hydrolyzing them. For in-depth understanding of the hydrolysis mechanism, the three-dimensional structure of NDM-1 was developed. With such a structural frame, two enzyme-ligand complexes were derived by respectively docking Imipenem and Meropenem (two typical beta-lactam antibiotic drugs) to the NDM-1 receptor. It was revealed from the NDM-1/Imipenem complex that the antibiotic drug was hydrolyzed while sitting in a binding pocket of NDM-1 formed by nine residues. And for the case of NDM-1/Meropenem complex, the antibiotic drug was hydrolyzed in a binding pocket formed by twelve residues. All these constituent residues of the two binding pockets were explicitly defined and graphically labeled. It is anticipated that the findings reported here may provide useful insights for developing new antibiotic drugs to overcome the resistance problem
Difference inequality for stability of impulsive difference equations with distributed delays
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