Showing papers by "Lei Wang published in 2004"

Dialectical Self-Esteem and East-West Differences in Psychological Well-Being

Abstract: A well-documented finding in the literature is that members of many East Asian cultures report lower self-esteem and psychological well-being than do members of Western cultures. The authors present the results of four studies that examined cultural differences in reasoning about psychological contradiction and the effects of naive dialecticism on self-evaluations and psychological adjustment. Mainland Chinese and Asian Americans exhibited greater "ambivalence" or evaluative contradiction in their self-attitudes than did Western synthesis-oriented cultures on a traditional self-report measure of self-esteem (Study 1) and in their spontaneous self-descriptions (Study 2). Naive dialecticism, as assessed with the Dialectical Self Scale, mediated the observed cultural differences in self-esteem and well-being (Study 3). In Study 4, the authors primed naive dialecticism and found that increased dialecticism was related to decreased psychological adjustment. Implications for the conceptualization and measurement of self-esteem and psychological well-being across cultures are discussed.

Reconstruction of May–July precipitation in the north Helan Mountain, Inner Mongolia since A.D. 1726 from tree-ring late-wood widths

Abstract: By analyzing statistical characteristics of five tree-ring standard chronologies, early-wood ring width (EWW), late-wood ring width (LWW), total ring width (TRW), minimum early-wood density (MinD), maximum late-wood density (MaxD) and, their climatic response respectively, we reconstructed the May to July precipitation using late-wood ring width (LWW) over the north Helan Mountain since A.D. 1726. The explained variance is 42% (R2adj = 41%,F= 31.46,p < 0.000001). After 11-a moving average, the explained variance reaches 82% (F= 156.9,p < 0.05). On the decadal scale, the rainfall reconstruction of the northern Helan Mountain displays a quite similar variation pattern with that of the April to early July precipitation in Baiyinaobao, east of Inner Mongolia for the last 150 years. It may reflect the intensity variation of the East Asia Summer Monsoon front to a certain extent. Spectrum analysis shows 11-a and 22-a periodicities in the May to July precipitation reconstruction at the north Helan Mountain.

Physical mapping of a rice lesion mimic gene, Spl1 , to a 70-kb segment of rice chromosome 12

Abstract: The rice lesion mimic mutant spotted leaf 1 ( spl1) was first identified in the rice ( Oryza sativa) cultivar Asahi in 1965. This mutant displayed spontaneous disease-like lesions in the absence of any pathogen, and was found to confer resistance to multiple isolates of rice blast. We employed a map-based cloning strategy to localize the Spl1 gene. A total of ten cleaved amplified polymorphic sequence (CAPS) markers linked to the Spl1 gene were identified and mapped to an 8.5-cM region on chromosome 12. A high-resolution genetic map was developed using these ten CAPS markers and a segregating population consisting of 3202 individuals. A BAC contig containing four BAC clones was constructed, and Spl1 was localized to a 423-kb region. Seven spl1 mutants were obtained from the IR64 deletion mutant collection, and molecular analysis using these mutants delimited the Spl1 gene to a 70-kb interval, covered by two BAC clones. These results provide the basis for cloning this gene, which is involved in cell death and disease resistance in rice.

High-power vertical cavity surface emitting laser with good performances

Abstract: Fabrication and performance of a high-power bottom-emitting InGaAs/GaAsP vertical cavity surface emitting laser with 430 µm diameter are described. The device realises the maximum room temperature CW output power 1.52 W at 987.6 nm with FWHM 0.8 nm. The far-field divergence angle is below 20°. Reliability test shows at 70°C an output power 0.35 W over 500 h.