Working Situation and Research Willingness: A Case of Primary School Teachers in The Southeast of China

Based on the pursuit of research-oriented teachers, this study temped to understand whether school teachers have the time, willingness, and demands to conduct research while teaching. A qualitative survey was conducted among primary school mathematics teachers in southern Fujian province, the Southeast of China, through Questionnaires Star, and 102 texts were obtained. The survey found that primary school mathematics teachers' average daily work time in the sample was about 10 hours. The work contents were cumbersome and diverse, including rigid and semi-rigid tasks, and a social control mode of short-term responsibility with limited personal autonomy was found. The lesson preparation adopted the modification and imitation mode, and the classroom teaching conducted preset adjustment orientation. The research awareness and innovation ability of lesson preparation and teaching were insufficient, but the overall willingness to do research was very high. Teaching-based empirical research was their favorite, aiming at improving personal, professional rank, and student achievement. The reasons for not wanting to do research were mainly busy work, lack of theoretical literacy, and expecting mentors to lead or team up with famous teachers. As such, some recommendations were put forward

Working Situation and Research Willingness: A Case of Primary School Teachers in The Southeast of China

Based on the pursuit of research-oriented teachers, this study temped to understand whether school teachers have the time, willingness, and demands to conduct research while teaching. A qualitative survey was conducted among primary school mathematics teachers in southern Fujian province, the Southeast of China, through Questionnaires Star, and 102 texts were obtained. The survey found that primary school mathematics teachers' average daily work time in the sample was about 10 hours. The work contents were cumbersome and diverse, including rigid and semi-rigid tasks, and a social control mode of short-term responsibility with limited personal autonomy was found. The lesson preparation adopted the modification and imitation mode, and the classroom teaching conducted preset adjustment orientation. The research awareness and innovation ability of lesson preparation and teaching were insufficient, but the overall willingness to do research was very high. Teaching-based empirical research was their favorite, aiming at improving personal, professional rank, and student achievement. The reasons for not wanting to do research were mainly busy work, lack of theoretical literacy, and expecting mentors to lead or team up with famous teachers. As such, some recommendations were put forward

Performance improvement of the LM device and its application to precise measurement of motion trajectories within a small range with a machining centre

In order to apply the LM device previously developed to precisely measuring small motion trajectories located on the different motion planes, three major improvements are successfully performed under the condition of completely maintaining the advantages of the device. These improvements include 1) development of a novel connection mechanism to smoothly attach the device to the spindle of a machining centre; 2) employment of a new data sampling method to achieve a high sampling frequency independent of the operating system of the control computer; and 3) proposal of a set-up method to conveniently install the device on the test machining centre with respect to different motion planes. Practical measurement experiment results with the improved device on a machining centre sufficiently demonstrate the effectiveness of the improvements and confirm several features including a very good response to small displacement close to the resolution of the device, high precision, repeatability and reliance. Moreover, based on the measurement results for a number of trajectories for a wide range of motion conditions, the error characteristics of small size motions are systematically discussed and the effect of the movement size and feed rate on the motion accuracy is verified for the machining centre tested

1,4-Bis(2-pyridylimino­meth­yl)benzene

In the crystal structure of the title compound, C18H14N4, the mol­ecule assumes site symmetry with the centroid of the benzene ring located on the inversion center. The mol­ecule is almost flat, with a dihedral angle of 2.70 (9)° between the pyridine and benzene rings

Hexaaqua­manganese(II) tetra­aqua­bis(2-amino­pyrazine-κN 4)manganese(II) disulfate dihydrate

The reaction of manganese(II) sulfate and 2-amino­pyrazine affords the title salt, [Mn(H2O)6][Mn(C4H5N3)2(H2O)4](SO4)2·2H2O. The metal atoms in the tetra­aqua-coordinated and hexa­aqua-coordinated cations lie on centers of inversion in octa­hedral geometries. The cations, anions and solvent water mol­ecules are linked by O—H⋯O, N—H⋯O and O—H⋯N hydrogen bonds into a three-dimensional network

(2E)-2-[2-(4-Chloro­phen­yl)hydrazin-1-yl­idene]-4,4,4-trifluoro-3-oxobutanal

The title compound, C10H6ClF3N2O2, was synthesized by coupling 4-dimethyl­amino-1,1,1-trifluoro­but-3-en-2-one with 4-chloro­benzene­diazo­nium chloride. It crystallizes with two mol­ecules in the asymmetric unit, which form two similar centrosymmetric dimers via hydrogen bonds. Extensive electron delocalization and intra­molecular N—H⋯O hydrogen bonds are responsible for a planar conformation of the mol­ecules (maximum deviations = 0.010 and −0.015 Å for the two molecules). In addition to hydrogen bonds, π–π stacking inter­actions with centroid–centroid distances of 3.604 (2) and 3.583 (2) Å contribute to the stability of the crystal structure

Tetra­aqua­bis(4-formyl­benzoato-κO)cobalt(II) tetra­hydrate

The CoII atom in the title compound, [Co(C8H5O3)2(H2O)4]·4H2O, which exists in an all-trans octa­hedral coordination geometry, lies on a center of inversion. The coordinated and uncoordinated water mol­ecules engage in extensive hydrogen-bonding inter­actions, forming a three-dimensional hydrogen-bonded network