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Asian Americans constitute 5% of the U.S. population. Their willingness to participate in research is important to examine because it influences participation rates and the representativeness of study results.
A total of 17,339 community members participated from six diverse Clinical and Translational Award (CTSA) sites. Community members were asked about their willingness to volunteer for eight different types of health research, their expectation of monetary compensation for research participation, their trust in research and researchers, their preferred language to receive health information, and their socio-demographic background. We examined Asian Americans’ willingness to participate in various types of health research studies and compared their perceptions with other racial/ethnic groups (i.e., Asian n = 485; African-American n = 9516; Hispanic/Latino n = 1889; Caucasian n = 4760; and other minority n = 689).
Compared to all other racial/ethnic groups, Asian Americans were less willing to participate in all eight types of health research. However, Asian Americans reported a lower amount of fair compensation for research participation than African-Americans and Hispanics/Latinos but were as likely to trust researchers as all other racial/ethnic groups.
Asian Americans are less willing to participate in health research than other racial/ethnic groups, and this difference is not due to dissatisfaction with research compensation or lower trust in researchers. Lack of trust in research and language barriers should be addressed to improve representativeness and generalizability of all populations in research.
Process-tracing has grown in popularity among qualitative researchers. However, unlike statistical models and estimators—or even other topics in qualitative methods—process-tracing is largely bereft of guidelines, especially when it comes to teaching. We address this shortcoming by providing a step-by-step checklist for developing a research design to use process-tracing as a valid and substantial tool for hypothesis testing. This practical guide should be of interest for both research application and instructional purposes. An online appendix containing multiple examples facilitates teaching of the method.
The present study aimed to examine the correlates of fruit and vegetable intake (FVI) separately among parents and their adolescents.
Parents and adolescents completed the Family Life, Activity, Sun, Health, and Eating (FLASHE) survey through the National Cancer Institute. The survey assessed daily intake frequencies of food/beverage groups, psychosocial, parenting and sociodemographic factors. Generalized linear models were run for both parents and adolescents, for a total of six models (three each): (i) sociodemographic characteristics; (ii) psychosocial factors; (iii) parent/caregiver factors.
Parent participants (n 1542) were predominantly 35–59 years old (86 %), female (73 %), non-Hispanic White (71 %) or non-Hispanic Black (17 %), with household income <$US 100 000 (79 %). Adolescents (n 805) were aged 12–14 years (50 %), non-Hispanic White (66 %) and non-Hispanic Black (15 %). Parents consumed 2·9 cups fruits and vegetables (F&V) daily, while adolescents consumed 2·2 cups daily. Educational attainment (higher education had greater FVI) and sex (men consumed more than women; all P<0·001) were significant FVI predictors. Parents with greater autonomous and controlled motivation, self-efficacy and preferences for fruit reported higher FVI (all P<0·001). Similarly, adolescents with greater autonomous and controlled motivation, self-efficacy and knowledge reported higher FVI (all P<0·001). Parenting factors of importance were co-deciding how many F&V teens should have, rules, having F&V in the home and cooking meals from scratch (all P<0·05).
Findings suggest factors that impact FVI among parents and their adolescent(s), which highlight the importance of the role of parent behaviour and can inform tailored approaches for increasing FVI in various settings.
A foundation diet, an intermediate blend and a summit diet were formulated with different levels of soyabean meal, casein and crystalline amino acids to compare ‘slow’ and ‘rapid’ protein diets. The diets were offered to male Ross 308 chicks from 7 to 28 d post-hatch and assessed parameters included growth performance, nutrient utilisation, apparent digestibility coefficients and disappearance rates of starch and protein (N) in four small intestinal segments. Digestibility coefficients and disappearance rates of sixteen amino acids in three small intestinal segments and amino acid concentrations in plasma from portal and systemic circulations from the foundation and summit diets were determined. The dietary transition significantly accelerated protein (N) disappearance rates in the distal jejunum and ileum. The transition from foundation to summit diets significantly increased starch digestibility coefficients in the ileum and disappearance rates in all four small intestinal segments. These starch responses were associated with significant enhancements in nutrient utilisation. The dietary transition linearly increased digestibility coefficients and disappearance rates of amino acids in the majority of cases. The summit diet increased plasma concentrations of five amino acids but decreased those of four amino acids relative to the foundation diet to significant extents. Plasma concentrations of free amino acids were higher in the portal than systemic circulations. Rapid protein disappearance rates advantaged poultry performance and influenced post-enteral availability of amino acids. If the underlying mechanisms are to be identified, further research into the impact of protein digestive dynamics on broiler performance is required but appears justified.
Conventional wisdom holds that languages, as ethnic markers, build communities with shared preferences and strong social networks. Consequently, ethnolinguistic homogeneity can facilitate growth. This article challenges this conception of language as a cultural marker. It argues that language is also a practical vehicle of communication; people can be multilingual, and second languages can be learned. Hence language boundaries are neither (1) congruent with ethnic boundaries nor (2) static. If true, the purported advantages of ethnolinguistic homogeneity should also be evident in countries with large populations of non-native speakers conversant in official languages. The study tests this hypothesis using an original cross-national and time-variant measure that captures both mother-tongue speakers and second-language learners. The empirical results are consistent with the understanding of language as an efficiency-enhancing instrument: countries with exogenously high levels of heterogeneity can avoid the ‘growth tragedy’1 by endogenously teaching the official language in schools.
What explains minority language recognition in dictatorships? In this paper, we argue that minority language groups in authoritarian regimes are more likely to have their languages recognized when their interests are represented by a party in the legislature. Moreover, the level of recognition is greater. We test this argument using original group-level and time-variant measures of minority party in legislature and minority language policies for all Asian dictatorships from 1980 to 2000. The results are robust even when we shift the analysis to the country level globally and account for possible spurious correlations.
A case-control study was conducted to determine risk factors for hospital-onset Clostridium difficile infection among patients admitted to 2 surgical units. Ertapenem prophylaxis was significantly associated with C. difficile infection risk (odds ratio, 3.13 [95% CI, 1.13–8.68], P=.028) and may offer an antimicrobial stewardship target among surgical patients.
Infect. Control Hosp. Epidemiol. 2015;36(11):1351–1354
Bone is a complex tissue-organ system integrating multiple components in hierarchical layers of molecular cues, cellular communities, and networking highways. Bone moves through space and time in a dynamic manner modulated by homeostatic mechanisms nuanced through a coordinated intercalation of biological and biomechanical rhythms. The price we vertebrate species pay for maintaining this magnificently orchestrated tissue-organ is daunting.
Bone is the most metabolically expensive tissue in the human body. For every ounce of bone, a pound of soft tissue is required for maintenance . Moreover, the human skeletal system must be rugged in order to handle years of cyclic loading at high forces on the order of kilonewtons, and highly sensitive to the calibrated kinetics of calcium and phosphate release in order to maintain meticulously modulated ion levels . Consequently, the intrinsic design of bone and the dynamics that sustain it are an instructional core for regenerative bone therapeutics.
In this chapter we will introduce the profoundly compelling biodynamic structural marvel that gives shape to the amorphous mass in which it is wrapped and provides the fulcrums and pulleys that propel our anatomy along the avenues and boulevards of our towns. We will probe the blueprint of bone as a defining mold that guides and mentors attempts in the laboratory to design and develop compositions to repair and regenerate this structural tour de force.
Central line-associated bloodstream infection (CLABSI) is a national target for mandatory reporting and a Centers for Medicare and Medicaid Services target for value-based purchasing. Differences in chart review versus claims-based metrics used by national agencies and groups raise concerns about the validity of these measures.
Evaluate consistency and reasons for discordance among chart review and claims-based CLABSI events.
We conducted 2 multicenter retrospective cohort studies within 6 academic institutions. A total of 150 consecutive patients were identified with CLABSI on the basis of National Healthcare Safety Network (NHSN) criteria (NHSN cohort), and an additional 150 consecutive patients were identified with CLABSI on the basis of claims codes (claims cohort). Ail events had full-text medical record reviews and were identified as concordant or discordant with the other metric.
In the NHSN cohort, there were 152 CLABSIs among 150 patients, and 73.0% of these cases were discordant with claims data. Common reasons for the lack of associated claims codes included coding omission and lack of physician documentation of bacteremia cause. In the claims cohort, there were 150 CLABSIs among 150 patients, and 65.3% of these cases were discordant with NHSN criteria. Common reasons for the lack of NHSN reporting were identification of non-CLABSI with bacteremia meeting Centers for Disease Control and Prevention (CDC) criteria for an alternative infection source.
Substantial discordance between NHSN and claims-based CLABSI indicators persists. Compared with standardized CDC chart review criteria, claims data often had both coding omissions and misclassification of non-CLABSI infections as CLABSI. Additionally, claims did not identify any additional CLABSIs for CDC reporting. NHSN criteria are a more consistent interhospital standard for CLABSI reporting.
Why is it that some governments recognize only one language while others espouse multilingualism? Related, why are some governments able to shift language policies, and if there is a shift, what explains the direction? In this article, the authors argue that these choices are theproduct of coalitional constraints facing the government during critical junctures in history. During times of political change in the state-building process, the effective threat of an alternate linguistic group determines the emergent language policy. If the threat is low, the government moves toward monolingual policies. As the threat increases, however, the government is forced to co-opt the alternate linguistic group by shifting the policy toward a greater degree of multilingualism. The authors test this argument by examining the language policies for government services and the education system in three Southeast Asian countries (Singapore, Malaysia, and Thailand).
This paper describes the photolysis of polystyrene with 1.06μm laser. The laser dissociation is measured with mass spectrum method. It gives the mean mass value of particles, quantum value and percentage of m/e=104 vs time.
Using a first principles pseudopotential total energy approach with a localized basis for the electronic wave functions, we have investigated the structural and bonding properties of β-Si3N4 and β-C3N4, which is a proposed structure for carbon nitride. The latter system is used as a prototype for studying the properties of possible covalent C-N solids. For β-Si3N4, calculated structural properties such as lattice constant and bulk modulus are in excellent agreement with experimental values. This gives support for the predicted properties of β-C3N4.β/C3N4 is found to be a good candidate for a new low-compressibility solid, with compressibility comparable to diamond. Despite similarities between β-Si3N4 and β-C3N4 in terms of crystal structure and valency of constituent elements, differences are found in their electronic bonding properties. A comparison of the bonding in β-Si3N4 and β-C3N4 with other first and second row semiconductors is useful for understanding trends in the structural properties of these materials.
Linear-response theory provides an efficient approach for calculating the vibrational properties of solids. Moreover, because the use of supercells is eliminated, points with little or no symmetry in the Brillouin zone can be handled. This allows accurate determinations of quantities such as real-space force constants and electron-phonon coupling parameters. We present highly converged calculations of the spectral function α2F(ω) and the average electron-phonon coupling for Al, Pb, and Li. We also present results for the free energy of vacancy formation in Al calculated within the harmonic approximation.
Our direct growth approach of integrating compound semiconductors (CS) and silicon CMOS is based on a unique silicon template wafer with an embedded CS template layer of Germanium (Ge). It enables selective placement of CS devices in arbitrary locations on a Silicon CMOS wafer for simple, high yield, monolithic integration and optimal circuit performance. HBTs demonstrate a peak current gain cutoff frequency ft of 170GHz at a nominal collector current density of 2mA/μm2. To the best of our knowledge this represents the first demonstration of an InP-based HBT fabricated on a silicon wafer.
Recent research has found that cell spreading on materials affects cell functions, including proliferation and differentiation. Also, cell spreading is related to filopodia extension which has been shown to be dependent on substrate topography. To better understand this correlation, live-cell imaging was used here to investigate osteoblast (bone forming cell) filopodia extension and cell spreading on two different kinds of diamond. Nanocrystalline diamond (NCD) and submicron crystalline diamond (SMCD) were fabricated to possess similar surface chemistry but different topographies, consisting of nanoscale spherical grains in NCD and submicron polyhedral grains in SMCD. The filopodia extension and cell expansion results showed that cells on nanoscale topographies had faster filopodia extension and greater expansion area than on submicron topographies. Results indicated that substrate topography has an impact on cell filopodia extension and cell spreading, and NCD promoted filopodia extension and cell expansion better than SMCD.
We report on a direct epitaxial growth approach for the heterogeneous integration of high speed III-V devices with Si CMOS logic on a common Si substrate. InP-based heterojunction bipolar transistor (HBTs) structures were successfully grown on patterned Si-on-Lattice-Engineered-Substrate (SOLES) substrates using molecular beam epitaxy. DC and RF performance similar to those grown on lattice-matched InP were achieved in growth windows as small as 15×15μm2. This truly planar approach allows tight device placement with InP-HBTs to Si CMOS transistors separation as small as 2.5 μm, and the use of standard wafer level multilayer interconnects. A high speed, low power dissipation differential amplifier was designed and fabricated, demonstrating the feasibility of using this approach for high performance mixed signal circuits such as ADCs and DACs.