Comprehensive Evaluation of Distributed PV Grid-Connected Based on Combined Weighting Weights and TOPSIS-RSR Method

To effectively quantify the impact of distributed photovoltaic(PV)access on the distribution network,this paper proposes a comprehensive evaluation method of distributed PV grid connection combining subjective and objective combination of assignment and technique for order preference by similarity to an ideal solution(TOPSIS)—rank sum ratio(RSR)(TOPSIS-RSR)method.Based on the traditional distribution network evaluation system,a comprehensive evaluation system has been constructed.It fully considers the new development requirements of distributed PV access on the environmental friendliness and absorptive capacity of the distribution grid and comprehensively reflects the impact of distributed PV grid connection.The analytic hierarchy process(AHP)was used to determine the subjective weights of the primary indicators,and the Spearman consistency test was combined to determine the weights of the secondary indicators based on three objective assignment methods.The subjective and objective combination weights of each assessment indicator were calculated through the principle of minimum entropy.Calculate the distance between the indicators to be evaluated and the positive and negative ideal solutions,the relative closeness ranking,and qualitative binning by TOPSIS-RSR method to obtain the comprehensive evaluation results of different scenarios.By setting up different PV grid-connected scenarios and utilizing the IEEE33 node simulation algorithm,the correctness and effectiveness of the proposed subject-object combination assignment and integrated assessment method are verified.

Establishment of a comprehensive indicator to nondestructively analyze watermelon quality at different ripening stages

Two nondestructive methods based on visible and near-infrared(VIS-NIR)spectroscopy and X-ray image have been used for the evaluation of watermelon quality.The prediction perform-ance based on partial least squares(PLS)by diffuse transmittance measurement(500-1010 nm)was evaluated for_chemical quality attributes SSC(Rc=0.903;RMSEC=0.572%Brix;Rp=0.862;RMSEP=0.717%Brix;RPD=1.83),lycopene(Rc=0.845;RMSEC=0.266 mg/100 gFW;Rp=0.751;RMSEP=0.439 mg/100 gFW;RPD=1.13)and moisture(Rc=0.917;RMSEC=0.280%;Rp=0.937;RMSEP=0.276%;RPD=2.79).The X-ray calibration linearequations developed by extracting the appropriate gray threshold were sufficiently precise forvolume(R?=0.986)and weight(R?=0.993).In order to optimize prediction model of water-melon quality in growth period,multivariate multi-block technique factor analysis enabled in-tegration of these traits:chemical information is related to physical infomation.Applyingprinciple component analysis to extract common factors and varimax with Kaiser normalizationto improve explanatory,the comprehensive indicator based on variances was established satis.factorily with Rc=0.94,RMSEC=0.244,Rp=0.93,RMSEP=0.344 and RPD=2.00.Acomparison of these models indicates that the comprehensive indicator determined only by portable VIS-NIR spectrometer appears as a suitable method for appraising watermelon qualitynondestructively on the plant at diferent ripen stages.This method contributes to infer the picking date of watermelon with higher accuracy and bigger economic benefits than that byexperience.

Evaluation of Tactile Ground Surface Indicators Installed on Sidewalks Beside Ninghai Road of Nanjing Based on Fuzzy Comprehensive Evaluation

In recent years,tactile ground surface indicators have been vigorously constructed in all cities and towns in China,and the length of tactile ground surface indicators has been regarded as one of the standards for measuring urban civilization construction.However,there are many problems in the actual use of tactile ground surface indicators,and the construction of a large number of tactile ground surface indicators has not had a positive impact on the travel of the visually impaired.With the sidewalk of Ninghai Road in Nanjing,Jiangsu,China as the object of study,this study constructed an evaluation system of tactile ground surface indicators installed on the sidewalk beside a road and determined its weight,evaluated the tactile ground surface indicators installed on sidewalks beside Ninghai Road from the perspective of the visually impaired,using fuzzy comprehensive evaluation,and obtained the satisfaction of each indicator and analyzed the reasons of the indicator results.This set of evaluation system can provide basic ideas for the targeted evaluation of tactile ground surface indicators installed on the sidewalk beside a road based on different urban districts,different urban road grades,and different urban environmental conditions.

Comprehensive early warning of rock burst utilizing microseismic multi-parameter indices

Rock bursts have become one of the most severe risks in underground coal mining and its early warning is an important component in the safety management. Microseismic(MS) monitoring is considered potentially as a powerful tool for the early warning of rock burst. In this study, an MS multi-parameter index system was established and the critical values of each index were estimated based on the normalized multi-information warning model of coal-rock dynamic failure. This index system includes bursting strain energy(BSE) index, time-space-magnitude independent information(TSMII) indices and timespace-magnitude compound information(TSMCI) indices. On the basis of this multi-parameter index system, a comprehensive analysis was conducted via introducing the R-value scoring method to calculate the weights of each index. To calibrate the multi-parameter index system and the associated comprehensive analysis, the weights of each index were first confirmed using historical MS data occurred in LW402102 of Hujiahe Coal Mine(China) over a period of four months. This calibrated comprehensive analysis of MS multi-parameter index system was then applied to pre-warn the occurrence of a subsequent rock burst incident in LW 402103. The results demonstrate that this multi-parameter index system combined with the comprehensive analysis are capable of quantitatively pre-warning rock burst risk.

Comprehensive evaluation of water quality parameters in Tianjin Dagu Dainage Canal

In this paper, some indices of sulfide, organic carbon, oil and heavy metals （copper, lead, zinc, cadmium, mercury, arsenic and chromium） in the sediments from Dagu Dainage Canal at the Bohai Bay during four seasons in 2012 - 2013 are selected, and Water Quality Pollution Index （API） is applied to evaluate water quality indices, aiming for the systematic evaluation of the water quality of Dagu Dainage Canal. The results showed that four stations of D3, D6, D7and D9 for S2 had the type Ⅱand Ⅲ of water; others had the type Ⅰ ; the total level of TOC, TPH, Cu, Pb, Zn, Cd, Hg, As and Cr were type Ⅰ, Ⅳ, Ⅱ, Ⅴ, Ⅱ, Ⅴ, Ⅲ, Vand Ⅴ. Water Quality Pollution Index （API） was 3.28, which illustrated Dagu Dainage Canal was in the state of contamination and the degree of pollution exceeded the standard functional areas.

Spatial and Temporal Differences of Urban Land Comprehensive Carrying Capacity in Guangxi

The comprehensive carrying capacity of urban land can reflect the re- source level, economic scale, social development and environmental pressure of ur- ban land carrying. The assessment indicator system of urban land comprehensive carrying capacity was constructed from the 4 aspects of resource, economy, society, environment, and principal component analysis and cluster analysis were used to evaluate the urban land comprehensive carrying capacity of Guangxi and the 14 cities in 2005-2014, and analyzed its spatial and temporal characteristics as well as the driving forces, with the aim to provide references for improving the urban land comprehensive carrying capacity. The results showed that, the overall urban land comprehensive carrying capacity in Guangxi increased in 2005-2014, and there were significant differences in the land comprehensive carrying capacities among the cities in Guangxi in 2005-2014, in which Liuzhou, Guilin, Nanning belonged to the regions with the highest carrying capacity, while Beihai, Yulin, Wutong belonged to the regions with high carrying capacity, and the carrying capacities of the other cities changed with the changes of time. The economic development degree was an important factor influencing urban land comprehensive carrying capacity, but could not directly represent the urban land comprehensive carrying capacity level.

Comprehensive Evaluation on Urban Sustainable Development of Harbin City in Northeast China

It is an effective way in realizing urban coordinated and sustainable development to establish a series of in- dicators and to evaluate urban environmental and socioeconomic development. According to the characteristics of Harbin City in Northeast China, an indicator system including five subsystems and 37 indicators was established for comprehensive evaluation on urban sustainable development. The development indexes of all urban subsystems and complex system were calculated quantitatively using the comprehensively integrated methods composed of Principle Component Analysis, Analytic Hierarchy Process and weighed index method, and then the comprehensive level of ur- ban sustainable development and the degree of urban interior coordination were analyzed. The results indicated that 1) the overall urban development presented an uptrend, however, the interior development was not well balanced from 1996 to 2006; 2) the development in each subsystem presented a strong fluctuation; and 3) the development in re- sources subsystem showed a downtrend. Based on those results, the suggestions of urban sustainable development were put forward at the end.

Visualization analysis of the capability of weapon system of systems for multi-dimensional indicators

In the field of weapon system of systems (WSOS) simulation, various indicators are widely used to describe the capability of WSOS, but it is always difficult to describe the comprehensive capability of WSOS quickly and intuitively by visualization of multi-dimensional indicators. A method of machine learning and visualization is proposed, which can display and analyze the capabilities of different WSOS in a two-dimensional plane. The analysis and comparison of the comprehensive capability of different components of WSOS is realized by the method, which consists of six parts: multiple simulations, key indicators mining, three spatial distance calculation, fusion project calculation, calculation of individual capability density, and calculation of multiple capability ranges overlay. Binding a simulation experiment, the collaborative analysis of six indicators and 100 possible kinds of red WSOS are achieved. The experimental results show that this method can effectively improve the quality and speed of capabilities analysis, reveal a large number of potential information, and provide a visual support for the qualitative and quantitative analysis model.

Regional comprehensive assessment on environment-health of China

The aim of the study was to assess the environment-health development in different regions of China. 175 indicators, such as average life expectancy at birth, emission intensity of waste gas, GDP etc. were chosen to describe various aspects of the environment, health and development of China. Of all the indicators, life expectancy can sufficiently reflect health situation of population. Consequently, life expectancy was identified as key indicator, and 42 out of 175 indicators were selected for establishing the environment-health indicator framework with three grades of integrative indices to assess the development of environment-health of China. Based on the hierarchical relation between various grades of indices, the comprehensive environment-health index was calculated and contributed to classify the environment-health situation of 30 provinces, municipalities and autonomous regions in China which were divided into five grades by four predefined limits. Comprehensive assessment indicates that the environment-health situation of the eastern and coastal areas is superior to that of inland which is the western regions with underdeveloped economy and rigorous natural condition. Especially, the Qinghai-Tibet and Yunnan-Guizhou plateaus in southwestern China are most vulnerable in the environment and population health. These fit in with the pattern of national socio-economic development, which fully shows that socio-economic context plays a dominant role in the improvement of environment-health in China.

Comprehensive Assessment of Tourism Environment in Oases of Xinjiang

[Objective] The study aimed to assess tourism environment in oases of Xinjiang. [Method] Based on basic theory of tourism environ- ment assessment and related standards at home and abroad, the evaluation indicator system and standards for tourism environment in oases of Xin- jiang were constructed according to the actual situation of the tourism environment, and then the comprehensive evaluation model was constructed to assess tourism environment in Urumqi using linear weighted sum. [Result] The comprehensive score of tourism environment in Urumqi is 6.807 68, and the tourism environment is in a good state. Resource and landscape environment is the best, followed by social service and economic environ- ment, while the other environments are bad. [ Conclusion] The comprehensive evaluation indicator system for tourism environment in oases of Xin- jiang is rational.

Dynamic Tracking and Comprehensive Evaluation on the Natural Resources Security Elements and System in China

System theory,pressure-state-response and drivingpressure-state-impact-response model have been applied to establishing China's dynamic tracking evaluation system of natural resources security in this article.Based on analytic hierarchy process and Delphi methods,the natural resources security situation has been evaluated systematically from 1991 to 2007.The result showed that the overall level of China's natural resources security presented a downtrend from 1991 to 2007.The basic reasons are the pressure indicators such as population,GDP,natural resources trade increased gradually,resulting in tension and fragility of natural resources security.

Ayurveda perspective and global scenario of Wet cupping therapy-a comprehensive review

Wet cupping is a simple and minor procedure practiced in Ayurveda and various traditional medicine system worldwide.In Ayurveda wet cupping therapy is practiced under the scope of Raktamo Kshana(therapeutic bloodletting)which is adopted to remove vitiated Rakta(blood).The present work is aimed to explore the wet cupping therapy from Ayurveda perspective along with global scenario.In this review,classical Ayurveda text and PubMed,Cochrane library,science direct,Google scholar and DHARA database were scrutinized for worldwide work on wet cupping therapy.The Ayurveda science can utilize these researches in completing its lost knowledge and also provide integrative effort in re-validation and enrichment of WCT which are required at large for greater benefit of the mankind.The method of WCT application,principles,indications,contraindications,complications and probable mode of action from Ayurveda perspective and global scenario were introduced and summarized.

应用型高校教育信息化评价指标体系模型探讨及实证研究

教育信息化是当今世界各国教育改革和发展的共同趋势,应用型高校是我国高等教育体系的重要组成部分。对应用型高校的教育信息化建设程度进行评价,是把握目前我国应用型高校教育信息化发展状况和提高教育信息化水平的重要举措。本研究基于文献资料形成基础指标,结合高校实际情况确定各级维度指标。利用模糊层次分析法(fuzzy analytic hierarchy process,FAHP)确定各项指标权重,结合模糊综合评判法(fuzzy synthetic evaluation method,FSEM)构建适用于我国应用型高校教育信息化建设程度的评价模型,并以山西省某医学院校为例,对其教育信息化水平的发展情况进行实证研究。研究结果表明,山西省某医学院校在信息化建设方面具有微弱优势,在人力资源方面得分最高,说明该高校近年来较注重人才全方位引进,在科研信息资源方面正向研究应用型大学大步迈进,但同时在信息公开方面存在延迟问题。因此,利用数学建模对应用型高校教育信息化程度进行评价具有一定的可行性和有效性,有助于推动高校教育新基建落地实施和教育信息化建设进一步深化。

面向全流程的科研机构知识管理能力评价指标框架研究——以沈阳市12家国家级重点实验室为例

识别及提升知识管理能力是科研机构评价活动的核心任务,但由于不同科研机构之间存在着研究领域和管理体系的差异,跨机构的评价和经验共享存在诸多障碍。现有的知识管理能力评价体系多以科研成果或行政流程为主要指标,存在一些不容忽视的隐患。为此,基于资源基础观和动态能力理论,将知识作为核心管理资源,并将知识资源的相关管理流程作为评价知识管理能力的指标,通过系统文献综述及德尔菲方法梳理出一套包含6个环节、30项要素的全流程知识能力评价指标框架,采用该指标框架对沈阳市12家国家级重点实验室的知识管理能力进行横向评价,根据评价结果给出有针对性的管理及政策建议。研究表明:该指标框架既能从一个更完整、动态的角度了解科研机构的知识管理能力,还能为科研机构之间的横向比较、评估和政策指导提供便利;12家实验室在知识收集、存档、阐述和应用方面表现良好,但在知识的保留、分享、协作、创新以及转化方面存在较大改良空间。为此,应建立全面公正的评估机制,通过定期审计和评估来确保实验室达到预定的知识管理标准。

大数据赋能高职学生综合素质评价改革的路径研究

学生综合素质评价能对高职人才培养进行积极反馈,但是当前面临着评价指标缺乏科学性、评价主体缺乏多元性、评价数据缺乏全面性、评价运用缺乏精准性等现实困境,大数据赋能高职学生综合素质评价改革能够有效缓解当前困境。为此,高职院校要充分挖掘大数据的技术优势,基于系统思维、数字思维、全局思维、闭环思维,做好评价指标梳理、评价数据治理、应用场景建设等工作;同时加强组织、技术、经费等方面的支持保障,以构建更为科学的学生综合素质评价改革体系。

基于明胶-卡拉胶复合基材的新型凝胶糖果制备及性能研究

新型凝胶糖果壁材起骨架支撑和密封芯材的作用,其性能直接决定凝胶糖果的质量。以明胶为壁材的凝胶糖果,具有力学性能好的优点,但热稳定性差。而卡拉胶为壁材时则表现出热稳定性强的特点,但力学性能差,不可在凝胶糖果壁材中单独使用。该文通过明胶、卡拉胶进行复合制备壁材,以提升新型凝胶糖果的力学性能和稳定性,制备出抗性评价(由耐温耐湿性和破裂压力两部分组成)较高的新型凝胶糖果,同时提升凝胶糖果贮藏期内感官评价的稳定性。综合稳定性指标将新型凝胶糖果贮藏期内品质指标综合为一个指标并进行了量化,从而判断新型凝胶糖果在贮藏期内稳定性的变化,进而比较不同贮藏温度下食品的稳定性。该文通过设计优化明胶、卡拉胶复合壁材配方,以明胶、卡拉胶和甘油为自变量,以感官评价和抗性评价为因变量,采用响应面试验确定明胶-卡拉胶壁材的最佳组成为明胶100份、卡拉胶3.4份和甘油30份。在壁材配方组成优化的基础上,分别采用明胶、明胶-卡拉胶复合制备凝胶糖果,并测定其在温度25、35、45℃下,贮藏90 d期间干燥失重和感官评价等品质指标的变化,根据品质指标变化得出其综合稳定性指标。

综合护理用于持续性高眼压状态下原发性闭角型青光眼效果分析

目的探讨综合护理用于持续性高眼压状态下原发性闭角型青光眼的效果。方法选取医院2021年2月至2023年2月收治的持续性高眼压状态下原发性闭角型青光眼患者64例,按盲摸双色球法均分为对照组和观察组,各32例。对照组患者给予一般护理,观察组患者加用综合护理。结果术后,观察组患者眼压及前房深度均显著低于对照组(P<0.05);观察组患者住院时间显著短于对照组(P<0.05);观察组并发症发生显著低于对照组(P<0.05);观察组患者护理满意程度显著高于对照组(P<0.05)。结论综合护理可显著改善持续性高眼压状态下原发性闭角型青光眼患者的相关指标、并发症发生情况及护理满意程度。

基于熵权-模糊综合评价法的无人机多光谱春玉米长势监测模型研究

为实现春玉米长势的快速监测,实时掌握田间作物的生长状况,本文以新疆维吾尔自治区克拉玛依地区种植的春玉米作为研究对象,利用无人机多光谱影像对春玉米进行长势监测。基于地面采集的春玉米叶片叶绿素含量、叶面积指数、地上部生物量和株高等数据,结合熵权法(EWM)和模糊综合评价法(FCE)建立综合长势指标CGMI_(EWM)和CGMI_(FCE)。通过无人机遥感影像数据构建光谱指数,并利用皮尔逊相关性分析法和方差膨胀因子确定模型最佳输入变量。采用偏最小二乘法(PLS)、随机森林回归(RF)及粒子群算法(PSO)优化RF模型建立春玉米长势反演模型,结合模型精度评价指标,最终确定春玉米空间影像长势分布图。结果表明,以CGMI_(EWM)和CGMI_(FCE)构建综合长势指标的相关性均高于单一长势指标的相关性;利用CGMI_(FCE)长势指标结合PSO-RF模型反演春玉米长势的效果最优,其决定系数(R^(2))为0.823,均方根误差(RMSE)为0.084%,相对分析误差(RPD)为2.345;研究区春玉米长势集中在生长正常(ZZ)等级,说明全区春玉米长势较为稳定。研究结果可为春玉米的田间管理提供科学依据。

高校网球教师职业胜任的综合素养模型构建研究

破解高校网球教师职业能力不足的现实困境,助力高校网球教育教学质量持续提升,需厘清高校网球教师职业胜任的综合素养模型。本文采用文献资料法、文本分析法、问卷调查法、数理统计法等研究方法,构建了包含知识、能力、职业品格、个性特质4个一级指标和网球专业知识、网球综合知识、职业核心能力、现代教学能力、职业道德标准、职业认同标准、个人素质、人际素质8个二级指标,以及网球基础知识、网球教学知识、网球英语知识等26项三级指标的高校网球教师职业胜任的综合素养模型,以期为高校网球教师综合素养的提升提供有效参考。

北疆绿洲农业区气象干旱指数的确定及干旱特征分析

气象干旱指数是衡量农业干旱程度的指标之一。选取降水距平百分率PA、标准化降水指数SPI、标准化降水蒸散指数SPEI,通过SPI和SPEI构建的新标准化降水蒸散指数nSPEI 4种气象干旱指数,利用北疆绿洲农业区1961—2020年的气象数据,进行相关性、回归拟合、不同等级干旱频率分布分析,选出符合实际的干旱指数,进而分析研究区的气象干旱变化特征。结果表明:(1)PA的干旱标准低估了干旱程度,SPI对温度上升引起的干旱加剧不敏感,SPEI计算蒸散发选用的Thornthwaite方法会高估温度对干旱的影响,nSPEI克服了SPI和SPEI的不足,对研究区的适用性最优。(2)近60年,研究区气象干旱随时间呈波动性变化特征。进入21世纪以来,春、夏季表现为湿—干变化,秋季表现为弱的干—湿变化;春、夏季干旱由弱增强、秋季略减弱;以全局性干旱为主,春季局域性干旱增多,夏、秋季局域性干旱减少;春季特旱多,夏季重旱多。