A novel bis-β-diketone ligand, 4,4'-bis(4,4,4-trifluoro-1,3-dioxobutyl)(phenoxy)-1,1'-binaphthalene (BTPB), is designed for synthesis of a white light emissive lanthanide complex. The ligand bears two benzoyl β-diketonate sites linked by a 1,1'-binaphthoxy spacer. Reaction of the doubly negatively charged bis-bidentate ligand with lanthanide ions forms triple-stranded dinuclear complexes Sm2(BTPB)3(H2O)4 () and Gd2(BTPB)3(H2O)4 (), which have been fully characterized by various spectroscopic techniques. UV-Vis absorption and emission spectroscopic techniques are used to investigate photophysical properties of the ligand and its complexes in THF and CHCl3. In some cases aggregation of the ligand results in the appearance of a new luminescence band at about 510 nm in addition to the monomer fluorescence. In complex , partial energy transfer from BTPB results in Sm(iii)-based red light emission in addition to the BTPB-based blue/green emission. With the variation of the excited wavelength and concentration of the solution, complex shows a tunable white light emission with the balance of three primary colors. This is an unusual case of observation of white light emission from a single molecule Sm(iii) complex.

Quantum simulation is a prominent application of quantum computers. While there is extensive previous work on simulating finite-dimensional systems, less is known about quantum algorithms for real-space dynamics. We conduct a systematic study of such algorithms. In particular, we show that the dynamics of a d-dimensional Schrödinger equation with η particles can be simulated with gate complexity 1 O ηdF poly(log(g ′ /ǫ)) , where ǫ is the discretization error, g ′ controls the higher-order derivatives of the wave function, and F measures the time-integrated strength of the potential. Compared to the best previous results, this exponentially improves the dependence on ǫ and g ′ from poly(g ′ /ǫ) to poly(log(g ′ /ǫ)) and polynomially improves the dependence on T and d, while maintaining best known performance with respect to η. For the case of Coulomb interactions, we give an algorithm using η 3 (d + η)T poly(log(ηdT g ′ /(∆ǫ)))/∆ one-and two-qubit gates, and another using η 3 (4d) d/2 T poly(log(ηdT g ′ /(∆ǫ)))/∆ one-and twoqubit gates and QRAM operations, where T is the evolution time and the parameter ∆ regulates the unbounded Coulomb interaction. We give applications to several computational problems, including faster real-space simulation of quantum chemistry, rigorous analysis of discretization error for simulation of a uniform electron gas, and a quadratic improvement to a quantum algorithm for escaping saddle points in nonconvex optimization.1 The Õ notation omits poly-logarithmic terms. Specifically, Õ(g) = O(g poly(log g)).

Background and Aim: It is particularly obvious that vocational and technical education (VTE) has been stigmatized for a long time in the field of secondary vocational education. The severe stigma that secondary vocational students suffer from may negatively affect junior high school students' choice to attend secondary vocational schools and become such students. This study aims to develop the junior high school students to Secondary Vocational Students Stigma Scale (SVSSS) and to test its reliability and validity. Methods: The initial questionnaire was formed following an open-ended questionnaire and expert review based on the conceptual model of stigma as a theoretical framework. A total of 316 junior high school students (sample 1) were administered with the resulting data subjected to item analysis and exploratory factor analysis (EFA). And a total of 416 junior high school students (sample 2) were administered with the data applied for validity, reliability, and cross-group invariance test. Results: It was revealed in the EFA that the SVSSS consists of 20 items in total, including three dimensions, namely negative labeling, social isolation, and devaluation and discrimination. Favorable structural validity of the questionnaire was demonstrated in confirmatory factor analysis (CFA) (x 2 /df=2.907, RMSEA=0.068, RFI=0.925, CFI=0.956, NFI=0.934, IFI=0.956, PNFI=0.816, PCFI=0.835). The aggregate scores of the SVSSS, exhibiting cross-gender invariance, were significantly negatively associated with willingness to choose secondary vocational education and positively correlated with academic performance. Cronbach's α coefficient of the SVSSS and each dimension ranged from 0.815 to 0.963, with split-half reliability from 0.777 to 0.969. Conclusion:Featuring favorable reliability and validity, the SVSSS was found to be an effective tool for the measurement of the secondary vocational education stigma among junior high school students, with its measurement invariance across genders.

Introduction Occupational stigma toward nurses exerts a negative impact on the physical and mental health and work performance of nurses. However, hitherto, there has been no quantitative instrument designed to assess occupational stigma toward nurses. Objective The present study aimed to develop the Nurse Occupational Stigma Scale (NOSS) and test its reliability and validity in the Chinese context. Methods The items of the scale were formed through the open-ended interview and literature review. A questionnaire survey was administered among 765 patients using NOSS and the Caring Behaviors Inventory (CBI-24). Results In the initial questionnaire, a total of 21 items were developed, and 5 items were dropped for cross-loadings. The formal scale consists of 16 items divided into three dimensions of negative label, nurse-patient relationship, and devaluation and discrimination. The results of confirmatory factor analysis (CFA) indicated that the three-factor model fitted well ( χ 2 /df=2.635, RMSEA=0.064, RFI=0.926, CFI=0.962, NFI=0.941, IFI=0.953). The total scores of the NOSS and the scores of all dimensions were significantly negatively correlated with the scores of the CBI-24. The internal consistency coefficients of the scale and all dimensions were between 0.827–0.920, and the split-half reliability coefficients were between 0.826–0.942. The NOSS had the measurement invariance across gender. Conclusion With its good reliability and validity, the NOSS can be an appropriate instrument for researchers to conduct studies about nurse occupational stigma.

Introduction The Brief Barratt Impulsiveness Scale (BBIS) can be used in large scale rapid assessments and improves data quality while reducing subject response burden. It has been verified to have good reliability and cross-cultural consistency in multiple countries. However, there are no tests of impulsivity for the Chinese married population. Aim To investigate the applicability of the BBIS among the Chinese married population. Methods The BBIS was administered to 664 married middle-aged adults (sample 1) for item analysis and exploratory factor analysis (EFA), and to 758 married middle-aged adults (sample 2) for confirmatory factor analysis (CFA). At the same time, the trait anger scale (TAS), the quality marriage index (QMI) and the emotion reactivity scale (ERS) are selected as the calibration standards to test the correlation validity of the calibration standards. Results BBIS includes 8 items, which are composed of two dimensions of poor self-control and behavioral impulsivity; the two dimensions explained 68.10% of the total variance. CFA demonstrated that the fit index of the two-factor structure of the scale was good ( χ 2 /df =2.315, RMSEA=0.042, RFI=0.971, CFI=0.989, NFI=0.982, IFI=0.990). The internal consistency reliability of each dimension and total scores were 0.824, 0.826 and 0.787, respectively. Total BBIS scores were significantly positively correlated with trait anger and emotional reactivity, and showed a significant negative correlation with marital quality. The Chinese version of BBIS had measurement equivalence between men and women. Conclusion The BBIS has good reliability and validity in the Chinese married population, and the measurement results can be compared across groups between different genders, which can be used as a suitable tool for impulse related research.