基于Lab色彩空间的沙尘降质图像增强方法

针对沙尘天气导致的数字图像质量大幅下降问题,提出一种基于Lab色彩空间的沙尘降质图像增强方法。将沙尘图像增强分解为偏色校正与细节增强两个步骤处理。偏色校正部分包括去除色偏与亮度拉伸。首先对Lab与YUV色彩空间中的沙尘图像直方图偏移特点进行了分析,然后提出一种Lab空间偏色校正算法修正直方图偏移,并对初步去除偏色的图像进行亮度拉伸,提升图像对比度。在细节增强部分,引入一种基于饱和度估计透射率的去雾方法进一步增强图像细节信息。实验结果表明,相较于各对比算法,所提算法可以去除不同程度沙尘带来的色偏,且在面对中小型图像时具有最佳的时间性能表现。在量化指标方面,基于无参考感知的图像质量评估标准和基于熵的无参考图像质量评价标准分别提升了3.2%和10.7%。本文方法可以有效去除色偏,还原清晰图像。

基于单片机和LabVIEW的无线温度监测与控制系统设计

本文设计了一个基于STC89C52单片机和LabVIEW的无线温度监测与控制系统.该系统采用上下位机的结构,其中下位机通过STC89C52单片机控制DS18B20采集实时温度,并利用控制模块实现加热或降温,同时,通过蓝牙模块实现与上位机的无线通信;上位机以LabVIEW作为开发平台,实现对温度的实时显示、处理、存储、阈值设定和温度控制等功能.该系统电路设计简单、成本低、扩展性强、人机界面友好,可用于智能大棚的温度控制等需要温度检测的场所,具有广阔的应用前景.

Perceived stress among staff in Saudi Arabian dental colleges before and after an accreditation process: A cross-sectional study

BACKGROUND Accreditation processes are extensively employed to guarantee the quality of higher education institutions.However,this process can potentially generate a stressful atmosphere for staff,thus impacting their ability to perform optimally under pressure.AIM To examine the knowledge of the National Commission for Academic Assessment and Accreditation(NCAAA)and its effects on perceived stress among dental college staff before and after the program accreditation process.METHODS The present cross-sectional questionnaire-based study included 300 employees from three dental colleges.The same employees had to fill out the questionnaire 1 mo after the NCAAA process.RESULTS Approximately 51.33%of the included employees believed that NCAAA is essential to attract quality students to join the program before and after the program.A total of 44.67%felt that their stress was high before,and 31.33%had low stress levels before and after NCAAA.These findings were statistically significant(P≤0.05).CONCLUSION NCAAA raised the prestige of the institution and specific programmes and increased prospects to attract better students,staff,and money,according to the employees.In addition to their needed teaching,research,and other service responsibilities,this work requires a tremendous amount of faculty effort and may cause them stress.

The Impact of Nursing Staff’s Work Attitude on the Fear of Patients Recovering from Benign Tumors:Family Support as a Mediating Variable

The perception of nursing staff’s attitude influences patient fear.Understanding this dynamic is crucial for fostering a supportive environment conducive to patient well-being and effective healthcare practices.The purpose of this research is to investigate how the attitudes and behaviours of nursing staff influence the fear and anxiety levels of patients recovering from benign tumors,aiming to improve patient care and recovery outcomes.Data was collected from a sample of 100 participants,comprising 20 nursing staff and 80 patients recovering from benign tumors.Surveys were administered to gather quantitative data on attitudes and fear levels.Participants were selected randomly from hospital records and outpatient clinics.Our analysis encompassed nursing staff attitude,patient fear levels,the influence of family support,progression of tumor recovery,patient-reported satisfaction,and the quality of healthcare services provided.The quantitative aspect utilized PLS-SEM software to perform regression analysis,evaluating both direct and indirect effects.Statistical analysis assessed the relationships between nursing staff attitudes,patient fear during benign tumor recovery,and the mediating role of family support.The findings of the study demonstrate that better nurse attitudes(Hypothesis 1,β=0.45,p<0.001)and stronger family support(Hypothesis 2,β=0.32;p<0.001) are linked to lower levels of patient fear.Partially mediating the relationship between nurse attitudes and patient fear,according to Hypothesis 3(β=0.28,p<0.002),is family support.Patients’perceptions of family support are highly influenced by nursing behaviour,as demonstrated by Hypothesis 4(β=0.38;p<0.001).Our research showed a strong relationship between the attitudes of nursing personnel and patient fear levels.Family support demonstrated a strong mediating effect on patient fear.Patient-reported satisfaction is positively correlated with family support.However,no significant relationship was found between healthcare service quality and patient fear.

基于Living Lab理念的体验式教学设计与应用研究——以“高等数学”课程为例

针对传统“高等数学”课程教学存在抽象理论难以理解、实践应用环节欠缺、学习兴趣普遍不高和教学质量效果不佳等问题,提出采用Living Lab理念的体验式教学方法作为课堂教学的补充和改进方案。Living Lab理念强调在真实环境中进行学习和研究,以实地考察、实践操作和数学建模等活动为载体,将抽象的数学理论与实际生活和工程问题相结合,促进学生对数学知识的理解和应用。Living Lab理念的体验式教学为改进高等数学课程教学提供了新思路和新方法,有助于提高教学质量和激发学生的学习动力。

Research Progress on Career Development of Nursing Staff

There are few studies on career development as an exclusive concept in the field of nursing in China.Currently,research related to the career development of nursing staff primarily relies on inductive evaluation tools,and there is less systematic summarization of this research.This paper reviews the concept,evaluation tools,and influencing factors of nursing career development,aiming to provide a reference for future research in this area.

Analysis of The Impact of The Healthcare Roundtable Model on the Major Disease Perceptions and Competencies of Cardiovascular Medicine Nursing Staff

Objective: To analyze the impact of the healthcare roundtable model on the major disease perceptions and competencies of cardiovascular nursing staff. Methods: Forty female nursing staff working in the hospital from April to June 2023 were selected and were randomly divided into a control group and an observation group, with 20 in each group. For 60 days, the control group used the conventional learning and communication model and the observation group used the medical and nursing roundtable model. The cognitive scores of cardiovascular disease-related knowledge, competency scores, and satisfaction with the learning and communication model before and after the implementation of the model in both groups were compared. Results: After the implementation, the cognitive scores related to cardiovascular disease-related knowledge, competency scores, and satisfaction with the learning and communication model in the observation group were significantly higher than those in the control group (P < 0.05). Conclusion: The healthcare roundtable model improved the knowledge and competence of cardiovascular internal medicine nursing staff in major diseases, and it is worth popularizing.

E-Lab手术示教系统在神经介入医生规范化培训中的应用

目的分析在神经介入医生培训中基于E-Lab手术示教系统开展脑血管造影的培训效果。方法对2022年9月至2023年3月在海军军医大学第一附属医院脑血管病中心进修的45名医生进行入组筛选,将14名符合入组条件的进修医生分为试验组和对照组,每组7人,试验组采取理论授课+基于E-Lab系统的录播案例开展培训,对照组按照传统理论授课+临床带教操作模式进行培训,比较试验组和对照组在不同培训模式下理论知识和操作技能的学习效果。结果学员的平均年龄、职称,以及培训期间造影例数、疾病类别、主动脉弓解剖类型、经桡动脉入路例数等基线指标比较,差异无统计学意义(P>0.05)。最终考核中的技能考核成绩和总成绩,2组比较差异有统计学意义(P<0.05)。其中2组的理论考核成绩差异无统计学意义(P>0.05);而技能考核中,2组导丝控制、导管控制、血管超选、操作时间、熟练程度技能得分比较,差异有统计学意义(P<0.05)。结论将E-Lab系统应用于脑血管造影术的进修学员教学培训中,对其操作技能培养有效果和优势,为神经介入的人才培养提供了新思路。

基于Neptune Lab智能实验系统综合测试平台助力教学创新策略

Neptune Lab智能实验系统的综合测试平台对教学创新策略具有一定的助力作用。通过Neptune Lab系统,教师可以收集学生的实验数据、实验报告和成绩等信息,全面评估学生的实验操作能力和学习效果。本文首先介绍Neptune Lab系统的特点和优势,其次探讨该系统在教学创新中的应用,包括教学效果评估、智能化教学辅助、虚拟实验环境等方面。最后,总结Neptune Lab系统在教学创新中的潜在发展方向。

敦煌文化在数字领域中的设计研究——以Team Lab为例

敦煌壁画在中国古代艺术中占据着至关重要的地位,其独特的艺术风格和丰富的文化内涵使其成为中国古代文化的瑰宝之一。而提及对敦煌壁画的保护和传承,“数字敦煌”居功至伟。在此基础上,敦煌壁画的数字艺术设计得以蓬勃发展。本文旨在探究敦煌壁画在数字领域下的设计研究,通过对日本Team Lab及其作品的分析,探索敦煌文化在数字领域中的设计创新实践及其所面临的挑战,并展望其未来的发展。

基于LabVIEW和Arduino的高职传感器课程改革

在传统的“传感器应用技术”课程教学中,实践教学高度依赖实验室设备。基于LabVIEW图形化编程软件和Arduino开源硬件平台,开发传感器口袋实验室教学项目较好解决了上述问题。通过一个具体的教学实例,介绍了基于上述平台组织教学实施与考核的全过程。实践表明,运用传感器口袋实验室和在线开放平台课程可以为学生创造随时随地学习和实践的条件,改革后学生的学习积极性和考核成绩均得到了大幅提升。

基于LMS Virtual.Lab调相机机房噪声仿真分析

特高压直流输变电工程以其输送距离长、送电容量大、传输稳定性优良、可以灵活控制等各种优势在电力传输领域具有广阔的应用前景。其中,调相机作为直流输变电工程的重要组成部分,可以改善电网功率因数,维持电网电压水平。目前,调相机本体的噪声问题影响着电网工人、周边居民的身心健康,对周边声环境造成污染,已经成为直流电网建设快速发展的重要挑战。因此研究调相机机房内外声场的分布对于噪声控制意义重大。根据声场有限元方法,在LMS Virtual.Lab中建立调相机机房声场仿真模型,并计算得到换流站调相机机房声场分布。之后通过与实测数据进行对比,验证仿真方法的准确性,并对模型进行优化改良,研究成果可以对调相机机房的后续降噪措施提供相应理论模型基础。

Living Lab体验教学法在产科实习生规范化护理教学中的应用

目的:分析Living Lab体验教学法在产科实习生规范化护理教学中的应用。方法:选择2019年6月至2021年6月我院产科护理实习生58名作为研究对象,按照随机数字表法分组,对照组接受常规教学法,试验组接受Living Lab体验教学法。比较两组实习生理论知识、实践操作考核成绩及满意度。结果:试验组理论知识、实践操作考核成绩均显著高于对照组(P<0.05);试验组实习生规范化护理教学满意度高于对照组(P<0.05)。结论:Living Lab体验教学法可有效提高产科护理实习生理论知识、实践操作考核成绩。

Relationship of High Work Engagement among Staff Midwives with Their Immediate Superiors’ Burnout on Maternity and Labor Wards in Japan

Introduction: Mental conditions for work among workers are related to clinical performance and influenced by colleagues within the same workplace. The aim of study was to examine the work engagement and burnout of staff midwives working on maternity and labor wards and to determine the factors related to high work engagement of staff midwives, including their immediate superiors’ work engagement and burnout. Methods: A cross-sectional questionnaire survey was employed in Japan. Questionnaires were distributed to 452 midwives/nurses working on maternity and labor wards of 20 hospitals and responses from 96 staff midwives and 17 of their immediate superiors were analyzed. Work engagement and burnout (exhaustion, cynicism, and professional efficacy) were assessed by the Utrecht Work Engagement Scale and the Maslach Burnout Inventory-General Survey, respectively. To examine the association of work engagement among staff midwives with their ages, marital status and work engagement and burnout of their superiors, logistic regression analysis was conducted. Results: Immediate superiors showed significantly higher level of work engagement than staff midwives, while there was no difference in the burnout. High work engagement of staff midwives was significantly correlated with the professional efficacy (AOR 1.93, 95% CI 1.12 - 3.33) and cynicism (AOR 2.01, 95% CI, 1.04 - 3.90) of their immediate superiors. There was no correlation of work engagement between them. Conclusions: High work engagement of staff midwives was correlated to high professional efficacy and cynicism of their immediate superiors, suggesting that there might be crossover effects on mental conditions for work between staff midwives and their immediate superiors.

Wet-Lab教学模式在眼科临床教学中的应用

目的:探讨Wet-Lab教学模式在眼科临床教学中的应用价值。方法:随机选择于我院眼科实习的五年制临床医学本科生40人做为研究对象,分为对照组和试验组,对照组采用传统教学模式,由带教老师按照实习大纲对学生进行面对面授课;试验组采用Wet-Lab教学模式,模拟临床操作平台,由带教老师指导学生借助猪眼进行简单的显微临床操作。实习结束时考核两组学生眼科理论知识(50分)及临床实践(50分)能力。结果:试验组学生理论知识、临床实践操作及眼科总成绩均高于对照组,与对照组对较,差异具有统计学意义(P<0.01)。结论:Wet-lab教学模式可以明显提高学生的学习热情及积极性,使学生的理论知识储备及临床综合实践能力全面提高,值得在眼科教学中应用。

基于CIE-Lab及RGB颜色空间的马铃薯块茎酶促褐变程度评价

为了研究不同品种马铃薯在不同时间段的褐变程度,针对77个国内当前主栽的马铃薯品种(系),进行了多时间点的酶促褐变程度研究,基于CIE-Lab、酶促褐变程度(BD)RGB、红色比率(RR)、绿色比率(GR)、蓝色比率(BR)等,通过聚类分析、隶属函数排名,将77个马铃薯品种(系)分成4个类别。结果显示,最易酶促褐变的闽中101、青薯9号及不易酶促褐变中的陇薯19号、甘农薯7号在马铃薯酶促褐变机理探索中具有潜在研究价值。

LaB6空心阴极发射体失效的拓展寿命模型及可靠性定量评估

空心阴极的寿命是制约离子推力器寿命及可靠性的关键因素之一,而发射体殆尽失效又是制约空心阴极寿命及可靠性的关键因素。在前面工作中,已建立了LaB6空心阴极工作在额定发射电流下时发射体的损耗过程及工作寿命预测模型,文章在此寿命预测模型的基础上提出了一种发射体寿命扩展模型,即发射体进一步消耗发射体下游顶端高温区域,利用扩展模型重新计算了发射体耗尽失效模式下空心阴极的寿命,并用威布尔统计规律及分析方法定量分析了空心阴极的可靠性,较基本模型而言,扩展模型中空心阴极的寿命及可靠性均得到明显提升。并且发射体温度分布对发射体寿命及可靠性有重要影响。

基于LAB颜色空间的图像去阴影网络

图像中出现阴影是一种常见现象,然而它会对图像内容的识别以及整体感官质量产生一定影响。目前已有许多传统和基于深度学习的方法用于图像阴影去除工作。这些方法大多数仍是在RGB颜色空间直接处理图像,但这将图像的亮度和颜色信息混合在了一起,而LAB则将图像的亮度和颜色信息放在了不同通道,并且实验证明:LAB颜色空间更适合用于阴影去除。采用了并行的双分支结构,以更好地学习各个通道之间的信息。提出的边缘优化模块可以使图像中阴影和非阴影连接区域过渡更加自然。实验结果表明,方法在ISTD数据集上优于多个目前主流方法。

基于Living Lab理念的体验式教学方法在急诊科护理带教中的应用效果分析

目的:探讨基于Living Lab理念的体验式教学方法在急诊科护理带教中的应用效果。方法:选取2020年7月至2021年6月在本院急诊科实习的38名护生作为对照组,接受常规带教法,2021年7月至2022年6月实习的38名护生作为试验组,接受基于Living Lab理念的体验式教学法,两组护生均培训5周。对比两组护生对实习的满意度、理论和实践考核得分。结果:试验组护生对于实习环境、教学水平、教学形式、教学内容方面的满意度评分均明显高于对照组(P<0.05)。试验组护生理论和实践考核得分均明显高于对照组(P<0.05)。结论:基于Living Lab理念的体验式教学方法用于培训急诊科护生可以提高其满意度,改善护生对理论和操作技能的掌握程度。

EYESi模拟器结合Wet-lab在白内障手术培训中的效果评价

目的:比较单一EYESi虚拟手术模拟器(Dry-lab)、Wet-lab以及两种方式联合教学在超声乳化白内障吸除显微手术培训中的效果及差异,以期探索更科学高效的教学方式。方法:选取中山大学中山眼科中心接受住院医师规范化培训的1年级住院医师18名,随机分为Dry-lab组、Wet-lab组和联合组,每组各6人,分别接受8次有效Dry-lab训练、8次Wet-lab训练、4次有效Dry-lab训练联合4次Wet-lab训练。培训前后问卷调查评估三种教学方式的模拟效果与学员满意度,并在猪眼模型上考核超声乳化白内障吸除手术的三个主要步骤,以评估学员的培训效果。结果:Dry-lab与Wet-lab训练均能有效帮助学员学习使用显微器械,操作手感较好。但在立体感(P=0.007)、与人眼操作相比近似度(P<0.001)以及对掌握技术的帮助度(P=0.003)上,Wet-lab优于Dry-lab训练;而在缩短培训用时(P<0.001)上,Dry-lab培训更具优势。联合培训模式培训效果优于单一Wet-lab训练(P=0.014)和模拟器培训(P=0.012),整体满意度高于Wet-lab训练(P=0.042)和Dry-lab培训(P=0.042)。结论:Dry-lab与Wet-lab训练在超声乳化白内障吸除显微手术培训中各有优势,而两者相结合的教学模式更为高效,培训效果更佳,整体满意度高。