Objective:Existing research shows that psychotherapists may experience secondary trauma and burnout,often neglecting self-care.This study aims to examine the effectiveness of self-care education in enhancing self-care...Objective:Existing research shows that psychotherapists may experience secondary trauma and burnout,often neglecting self-care.This study aims to examine the effectiveness of self-care education in enhancing self-care efficacy among psychotherapists and explore factors affecting improvements in their self-care abilities.Methods:A self-care workshop was conducted for 159 psychotherapists from various fields.Participants’demographic information and self-care ability data were collected.The Exercise of Self-Care Agency Scale(ESCA)was used to assess the participant’s self-care levels before and after the workshop.Results:Post-workshop,ESCA total scores and subscale scores of participants showed significant increases(all P<0.001).Notably,score improvement levels differed by gender and years of practice,with female therapists showing greater improvement than male therapists(t=2.069,P=0.040)and those with longer work experience showing greater improvement than those with shorter experience(F=2.537,P=0.042).Conclusion:Providing self-care education for psychotherapists is essential.Future self care education programs or interventions for psychotherapists should consider gender and work experience factors to better support their self-care enhancement.展开更多
Exploitation of sustainable energy sources requires the use of unique conversion and storage systems,such as solar panels,batteries,fuel cells,and electronic equipment.Thermal load management of these energy conversio...Exploitation of sustainable energy sources requires the use of unique conversion and storage systems,such as solar panels,batteries,fuel cells,and electronic equipment.Thermal load management of these energy conversion and storage systems is one of their challenges and concerns.In this article,the thermal management of these systems using thermoelectric modules is reviewed.The results show that by choosing the right option to remove heat from the hot side of the thermoelectric modules,it will be a suitable local cooling,and the thermoelectric modules increase the power and lifespan of the system by reducing the spot temperature.Thermoelectric modules were effective in reducing panel temperature.They increase the time to reach a temperature above 50℃ in batteries by 3 to 4 times.Also,in their integration with fuel cells,they increase the power density of the fuel cell.展开更多
Deep learning techniques are revolutionizing the developmentof medical image segmentation.With the advancement of Transformer models,especially ViT and Swin-Transformer,which enhances the remote-dependent modeling cap...Deep learning techniques are revolutionizing the developmentof medical image segmentation.With the advancement of Transformer models,especially ViT and Swin-Transformer,which enhances the remote-dependent modeling capability of the model through the self-attention mechanism,better segmentation performance can be achieve.Moreover,the high computational cost of Transformer has motivated researchers to explore more efficient models,such as the Mamba model based on state-space modeling(SSM),and for the field of medical segmentation,reducing the number of model parameters is also necessary.In this study,a novel asymmetric model called LA-UMamba was proposed,which integrates visual Mamba module to efficiently capture complex visual features and remote dependencies.The classical design of U-Net was adopted in the upsampling phase to help reduce the number of references and recover more details.To mitigate the information loss problem,an auxiliary U-Net downsampling layer was designed to focus on sizing without extracting features,thus enhancing the protection of input information while maintaining the efficiency of the model.The experiments were conducted on the ACDC MRI cardiac segmentation dataset,and the results showed that the proposed LA-UMamba achieves proved performance compared to the baseline model in several evaluation metrics,such as IoU,Accuracy,Precision,HD and ASD,which improved that the model is successful in optimizing the detail processing and reducing the complexity of the model,providing a new perspective for further optimization of medical image segmentation techniques.展开更多
With the rapid development of big data,online education can use big data technology to achieve personalized and intelligent education as well as improve learning effect and user satisfaction.In this study,the users of...With the rapid development of big data,online education can use big data technology to achieve personalized and intelligent education as well as improve learning effect and user satisfaction.In this study,the users of The Open University of China online education platform were taken as the research object,their user behavior data was collected,cleaned,and analyzed with text mining.The RFM model and the improved K-Means algorithm were used to construct the user portrait of the platform group and the needs and preferences of different types of the users were analyzded.Chinese word segmentation was used to show the key words of different types of users and the word cloud of their using frequency.The focus of different user groups was determined to facilitate for the follow-up course recommendation and precision marketing.Experimental results showed that the improved K-Means algorithm can well depict the behavior of group users.The index of silhouette score was improved to 0.811 by the improved K-Means algorithm,from random uncertainty to a fixed value,which can effectively solve the problem of inconsistent results caused by outlier sample points.展开更多
Femtosecond laser processing is an important machining method for micro-optical components such as Fresnel zone plate(FZP).However,the low processing efficiency of the femtosecond laser restricts its application.Here,...Femtosecond laser processing is an important machining method for micro-optical components such as Fresnel zone plate(FZP).However,the low processing efficiency of the femtosecond laser restricts its application.Here,a femtosecond laser Bessel beam is proposed to process micro-FZP,which is modulated from a Gaussian beam to a Bessel annular beam.The processing time for FZP with an outer diameter of 60μm is reduced from 30 min to 1.5 min on an important semiconductor material gallium arsenide(GaAs),which significantly improves the processing efficiency.In the modulation process,a central ablation hole that has an adverse effect on the diffraction performance is produced,and the adverse effect is eliminated by superimposing the blazed grating hologram.Meanwhile,the FZP machined by spatial light modulator(SLM)has good morphology and higher diffraction efficiency,which provides a strong guarantee for the application of micro-FZP in computed tomography and solar photovoltaic cells.展开更多
Energetic compounds bearing the trinitromethyl group are garnering broad attraction as potential candidates for a new generation of high energy dense oxidizers.In this work,an effective dual modulation strategy involv...Energetic compounds bearing the trinitromethyl group are garnering broad attraction as potential candidates for a new generation of high energy dense oxidizers.In this work,an effective dual modulation strategy involving both molecular isomerization and crystal morphology control was employed to design and optimize trinitromethyl-oxadiazole with improved comprehensive performance.Utilizing this dual strategy,3,5-bis(trinitromethyl)-1,2,4-oxadiazole(3)was synthesized,resulting in the formation of two distinct crystal morphologies(needle and sheet)corresponding to two crystal forms(3-a and3-b).Encouragingly,while maintaining ultra-high oxygen balance(21.73%),3 achieves impressive densities(1.97-1.98 g/cm^(3)).To our knowledge,the density of 1.98 g/cm^(3)for 3-a sets a new record among that of nitrogen-rich monocyclic compounds.Notably,practical crystal morphology prediction was creatively introduced to guide the experimental crystallization conditions of 3,increasing the impact sensitivity and friction sensitivity from 1 J to 80 N(3-a)to 10 J and 240 N(3-b),respectively.Additionally,the crystal structural analyses and theoretical calculations were conducted to elucidate the reasons of differences between 3-a and 3-b in density and stability.This work provides an efficient strategy to enhance performance of trinitromethyl derivatives,broadening the path and expanding the toolbox for energetic materials.展开更多
A generalized multiple-mode prolate spherical wave functions (PSWFs) multi-carrier with index modulation approach is proposed with the purpose of improving the spectral efficiency of PSWFs multi-carrier systems. The p...A generalized multiple-mode prolate spherical wave functions (PSWFs) multi-carrier with index modulation approach is proposed with the purpose of improving the spectral efficiency of PSWFs multi-carrier systems. The proposed method,based on the optimized multi-index modulation, does not limit the number of signals in the first and second constellations and abandons the concept of limiting the number of signals in different constellations. It successfully increases the spectrum efficiency of the system while expanding the number of modulation symbol combinations and the index dimension of PSWFs signals. The proposed method outperforms the PSWFs multi-carrier index modulation method based on optimized multiple indexes in terms of spectrum efficiency, but at the expense of system computational complexity and bit error performance. For example, with n=10 subcarriers and a bit error rate of 1×10^(-5),spectral efficiency can be raised by roughly 12.4%.展开更多
In the base of utility and marginal utility,the article put forwardthe concept of utility and marginal utilityof educational outlay and the theory of them,and analyzed the actuality of educational resource deployment ...In the base of utility and marginal utility,the article put forwardthe concept of utility and marginal utilityof educational outlay and the theory of them,and analyzed the actuality of educational resource deployment in ourcountry,gave some advice about howtoi mprove our educational resource deployment of compulsory education.展开更多
百年来,中国学者在译介杜威名著Democracy and Education时,对其书名翻译多有不同,前后有近十种译名之别,致使杜威民主教育思想在中国传播过程中呈现出多重面向。从20世纪10-20年代流行的"平民主义与教育"译介到30年代流行的&...百年来,中国学者在译介杜威名著Democracy and Education时,对其书名翻译多有不同,前后有近十种译名之别,致使杜威民主教育思想在中国传播过程中呈现出多重面向。从20世纪10-20年代流行的"平民主义与教育"译介到30年代流行的"民本主义与教育"译介再到40年代起流行的"民主主义与教育"译介,杜威Democracy and Education在不同的时代背景下总是受社会思潮的影响发生着某种转译嬗变,以契合时代发展需要。总的来说,该书在中国长达百年的译介传播并非只是一次比一次更逼真复现杜威文本思想的过程,而是在时空交错的历史长河中伴随转变着的社会情境一次又一次不断被重新阐释的过程。在新时期,还需注重结合当前社会情境对Democracy and Education进行转化性阐释,以适应时代变革图新需要进而揭示其当代意涵。展开更多
《Education at a Glance:OECD indicators》是OECD每年发布的关于各成员国3年前教育发展概况统计。通过对2010-2015年6年间OECD发布的《Education at a Glance:OECD indicators》报告中关于幼儿教育阶段经费投入状况的分析发现:OECD国...《Education at a Glance:OECD indicators》是OECD每年发布的关于各成员国3年前教育发展概况统计。通过对2010-2015年6年间OECD发布的《Education at a Glance:OECD indicators》报告中关于幼儿教育阶段经费投入状况的分析发现:OECD国家近年对幼儿教育的投入占GDP的比例平均0.6℅以上,占教育总体投入的8.5℅以上,并且教育投入正在向幼儿教育倾斜;政府是学前教育投入的绝对主体,并正在逐步通过多种方式降低家庭负担的比重;在保证一定数量的公办幼儿教育机构的基础上逐渐扩大对私立机构的投入和资助。OECD国家幼儿教育经费投入趋势对我国幼儿教育经费投入具有重要的参考价值。展开更多
基金supported by the Natural Science Foundation of Hunan Province,China(2023JJ60076).
文摘Objective:Existing research shows that psychotherapists may experience secondary trauma and burnout,often neglecting self-care.This study aims to examine the effectiveness of self-care education in enhancing self-care efficacy among psychotherapists and explore factors affecting improvements in their self-care abilities.Methods:A self-care workshop was conducted for 159 psychotherapists from various fields.Participants’demographic information and self-care ability data were collected.The Exercise of Self-Care Agency Scale(ESCA)was used to assess the participant’s self-care levels before and after the workshop.Results:Post-workshop,ESCA total scores and subscale scores of participants showed significant increases(all P<0.001).Notably,score improvement levels differed by gender and years of practice,with female therapists showing greater improvement than male therapists(t=2.069,P=0.040)and those with longer work experience showing greater improvement than those with shorter experience(F=2.537,P=0.042).Conclusion:Providing self-care education for psychotherapists is essential.Future self care education programs or interventions for psychotherapists should consider gender and work experience factors to better support their self-care enhancement.
文摘Exploitation of sustainable energy sources requires the use of unique conversion and storage systems,such as solar panels,batteries,fuel cells,and electronic equipment.Thermal load management of these energy conversion and storage systems is one of their challenges and concerns.In this article,the thermal management of these systems using thermoelectric modules is reviewed.The results show that by choosing the right option to remove heat from the hot side of the thermoelectric modules,it will be a suitable local cooling,and the thermoelectric modules increase the power and lifespan of the system by reducing the spot temperature.Thermoelectric modules were effective in reducing panel temperature.They increase the time to reach a temperature above 50℃ in batteries by 3 to 4 times.Also,in their integration with fuel cells,they increase the power density of the fuel cell.
文摘Deep learning techniques are revolutionizing the developmentof medical image segmentation.With the advancement of Transformer models,especially ViT and Swin-Transformer,which enhances the remote-dependent modeling capability of the model through the self-attention mechanism,better segmentation performance can be achieve.Moreover,the high computational cost of Transformer has motivated researchers to explore more efficient models,such as the Mamba model based on state-space modeling(SSM),and for the field of medical segmentation,reducing the number of model parameters is also necessary.In this study,a novel asymmetric model called LA-UMamba was proposed,which integrates visual Mamba module to efficiently capture complex visual features and remote dependencies.The classical design of U-Net was adopted in the upsampling phase to help reduce the number of references and recover more details.To mitigate the information loss problem,an auxiliary U-Net downsampling layer was designed to focus on sizing without extracting features,thus enhancing the protection of input information while maintaining the efficiency of the model.The experiments were conducted on the ACDC MRI cardiac segmentation dataset,and the results showed that the proposed LA-UMamba achieves proved performance compared to the baseline model in several evaluation metrics,such as IoU,Accuracy,Precision,HD and ASD,which improved that the model is successful in optimizing the detail processing and reducing the complexity of the model,providing a new perspective for further optimization of medical image segmentation techniques.
文摘With the rapid development of big data,online education can use big data technology to achieve personalized and intelligent education as well as improve learning effect and user satisfaction.In this study,the users of The Open University of China online education platform were taken as the research object,their user behavior data was collected,cleaned,and analyzed with text mining.The RFM model and the improved K-Means algorithm were used to construct the user portrait of the platform group and the needs and preferences of different types of the users were analyzded.Chinese word segmentation was used to show the key words of different types of users and the word cloud of their using frequency.The focus of different user groups was determined to facilitate for the follow-up course recommendation and precision marketing.Experimental results showed that the improved K-Means algorithm can well depict the behavior of group users.The index of silhouette score was improved to 0.811 by the improved K-Means algorithm,from random uncertainty to a fixed value,which can effectively solve the problem of inconsistent results caused by outlier sample points.
基金Projects(51875584,51875585,51975590)supported by the National Natural Science Foundation of China。
文摘Femtosecond laser processing is an important machining method for micro-optical components such as Fresnel zone plate(FZP).However,the low processing efficiency of the femtosecond laser restricts its application.Here,a femtosecond laser Bessel beam is proposed to process micro-FZP,which is modulated from a Gaussian beam to a Bessel annular beam.The processing time for FZP with an outer diameter of 60μm is reduced from 30 min to 1.5 min on an important semiconductor material gallium arsenide(GaAs),which significantly improves the processing efficiency.In the modulation process,a central ablation hole that has an adverse effect on the diffraction performance is produced,and the adverse effect is eliminated by superimposing the blazed grating hologram.Meanwhile,the FZP machined by spatial light modulator(SLM)has good morphology and higher diffraction efficiency,which provides a strong guarantee for the application of micro-FZP in computed tomography and solar photovoltaic cells.
基金supported by the National Natural Science Foundation of China(No.22375021,22235003,22261132516&22205021)the BIT Research and Innovation 265 Promoting Project(Grant No.2023YCXZ017)。
文摘Energetic compounds bearing the trinitromethyl group are garnering broad attraction as potential candidates for a new generation of high energy dense oxidizers.In this work,an effective dual modulation strategy involving both molecular isomerization and crystal morphology control was employed to design and optimize trinitromethyl-oxadiazole with improved comprehensive performance.Utilizing this dual strategy,3,5-bis(trinitromethyl)-1,2,4-oxadiazole(3)was synthesized,resulting in the formation of two distinct crystal morphologies(needle and sheet)corresponding to two crystal forms(3-a and3-b).Encouragingly,while maintaining ultra-high oxygen balance(21.73%),3 achieves impressive densities(1.97-1.98 g/cm^(3)).To our knowledge,the density of 1.98 g/cm^(3)for 3-a sets a new record among that of nitrogen-rich monocyclic compounds.Notably,practical crystal morphology prediction was creatively introduced to guide the experimental crystallization conditions of 3,increasing the impact sensitivity and friction sensitivity from 1 J to 80 N(3-a)to 10 J and 240 N(3-b),respectively.Additionally,the crystal structural analyses and theoretical calculations were conducted to elucidate the reasons of differences between 3-a and 3-b in density and stability.This work provides an efficient strategy to enhance performance of trinitromethyl derivatives,broadening the path and expanding the toolbox for energetic materials.
基金supported by the China National Postdoctoral Program for Innovative Talents(BX20200039)the Special Fund Project of“Mount Taishan Scholars”Construction Project in Shandong Province(ts20081130).
文摘A generalized multiple-mode prolate spherical wave functions (PSWFs) multi-carrier with index modulation approach is proposed with the purpose of improving the spectral efficiency of PSWFs multi-carrier systems. The proposed method,based on the optimized multi-index modulation, does not limit the number of signals in the first and second constellations and abandons the concept of limiting the number of signals in different constellations. It successfully increases the spectrum efficiency of the system while expanding the number of modulation symbol combinations and the index dimension of PSWFs signals. The proposed method outperforms the PSWFs multi-carrier index modulation method based on optimized multiple indexes in terms of spectrum efficiency, but at the expense of system computational complexity and bit error performance. For example, with n=10 subcarriers and a bit error rate of 1×10^(-5),spectral efficiency can be raised by roughly 12.4%.
文摘In the base of utility and marginal utility,the article put forwardthe concept of utility and marginal utilityof educational outlay and the theory of them,and analyzed the actuality of educational resource deployment in ourcountry,gave some advice about howtoi mprove our educational resource deployment of compulsory education.
文摘百年来,中国学者在译介杜威名著Democracy and Education时,对其书名翻译多有不同,前后有近十种译名之别,致使杜威民主教育思想在中国传播过程中呈现出多重面向。从20世纪10-20年代流行的"平民主义与教育"译介到30年代流行的"民本主义与教育"译介再到40年代起流行的"民主主义与教育"译介,杜威Democracy and Education在不同的时代背景下总是受社会思潮的影响发生着某种转译嬗变,以契合时代发展需要。总的来说,该书在中国长达百年的译介传播并非只是一次比一次更逼真复现杜威文本思想的过程,而是在时空交错的历史长河中伴随转变着的社会情境一次又一次不断被重新阐释的过程。在新时期,还需注重结合当前社会情境对Democracy and Education进行转化性阐释,以适应时代变革图新需要进而揭示其当代意涵。
文摘《Education at a Glance:OECD indicators》是OECD每年发布的关于各成员国3年前教育发展概况统计。通过对2010-2015年6年间OECD发布的《Education at a Glance:OECD indicators》报告中关于幼儿教育阶段经费投入状况的分析发现:OECD国家近年对幼儿教育的投入占GDP的比例平均0.6℅以上,占教育总体投入的8.5℅以上,并且教育投入正在向幼儿教育倾斜;政府是学前教育投入的绝对主体,并正在逐步通过多种方式降低家庭负担的比重;在保证一定数量的公办幼儿教育机构的基础上逐渐扩大对私立机构的投入和资助。OECD国家幼儿教育经费投入趋势对我国幼儿教育经费投入具有重要的参考价值。
