Subjects: Statistics >> Social Statistics submitted time 2024-03-27 Cooperative journals: 《中国科学院院刊》
Abstract： The demographic reality of a large population and limited land resources in China necessitates the implementation of the world’s most stringent cultivated land protection system. Effective, timely, and accurate monitoring of the status of cultivated land protection red line is essential to ensuring cultivated land protection and food security. The development of cutting-edge technologies such as remote sensing big data, cloud computing, and artificial intelligence has provided new opportunities for cultivated land control and monitoring. This article systematically elaborates on the current research status and challenges in the field of cultivated land protection redline control and monitoring, including the establishment of the monitoring object system, the availability of remote sensing data, the accuracy, and timeliness of monitoring results, and other related issues. It introduces advanced technologies and prospects for big data technology in cultivated land redline monitoring and proposes innovative technical solutions for cultivated land redline monitoring. The article also discusses the challenges faced in achieving this paradigm shift in research and provides corresponding recommendations on the connotations of cultivated land protection, delineation of basic land units, and the construction of monitoring networks for implementing national land spatial planning.
Subjects: Psychology >> Experimental Psychology Subjects: Psychology >> Psychological Measurement submitted time 2024-03-04
Abstract： Statistical power is one of the key indicators for assessing the robustness and replicability of research results. However, the standardization and completeness of calculating and reporting statistical power in event-related potential studies still need improvement. This paper aims to provide researchers with references for calculating and reporting statistical power during the design or preregistration of research protocols at various stages of event-related potential studies by summarizing the influencing factors, methods, and application examples of statistical power in such studies.
Peer Review Status:
Awaiting Review
Subjects: Nursing >> Nursing submitted time 2023-10-17
Abstract： This article summarizes the nursing experience of a patient with chronic pelvic inflammatory disease of dampness heat stasis type treated with traditional Chinese medicine packaging combined with traditional Chinese medicine enema. Through nursing evaluation, nursing measures such as traditional Chinese medicine characteristic nursing, pain nursing, emotional nursing, and dialectical nursing were implemented to improve the patient's clinical symptoms and quality of life, Summary and analysis: In the treatment of chronic pelvic inflammatory disease patients with dampness heat stasis type, the combination of traditional Chinese medicine packaging and traditional Chinese medicine enema has a significant effect, can improve the treatment efficiency, alleviate the relevant symptoms of patients, and has high treatment safety, which is worth promoting.
Peer Review Status:Awaiting Review
Subjects: Nursing >> Nursing submitted time 2023-10-14
Abstract： This article summarizes the nursing experience of a patient with chronic pelvic inflammatory disease of dampness heat stasis type treated with traditional Chinese medicine packaging combined with traditional Chinese medicine enema. Through nursing evaluation, nursing measures such as traditional Chinese medicine characteristic nursing, pain nursing, emotional nursing, and dialectical nursing were implemented to improve the patient's clinical symptoms and quality of life, Summary and analysis: In the treatment of chronic pelvic inflammatory disease patients with dampness heat stasis type, the combination of traditional Chinese medicine packaging and traditional Chinese medicine enema has a significant effect, can improve the treatment efficiency, alleviate the relevant symptoms of patients, and has high treatment safety, which is worth promoting.
Peer Review Status:Awaiting Review
Subjects: Nursing >> Nursing submitted time 2023-05-12
Abstract： Objective To explore the application effect of BOPPPS combined with dynamic scenarios simulation in ICU nursing teaching. Methods Totally 57 nursing students who practiced their internship in ICU ward of a grade-A hospital from July, 2021 to February, 2022 were selected as the research objects. In the clinical teaching of ICU, 27 students in the control group adopted conventional teaching method, and 30 students in the experimental group adopted BOPPPS combined with dynamic scenarios simulation teaching method. The two groups were compared in terms of assessment results, independent learning ability and critical thinking level. Results The examination results of the test group were better than that of the control group, with a significant difference(P＜0.05). The experimental group had higher evaluation on the teaching effect of BOPPPS combined with dynamic scenario simulation. After teaching, the planning and implementation, self-management and total score of independent learning ability in the experimental group were significantly higher than those of the control group, with statistical significance (P＜0.05). There was statistically significant difference in the total score of critical thinking in experimental group before and after teaching (P＜0.05). Conclusion BOPPPS combined with dynamic scenarios simulation can improve students'' independent learning ability, cultivate students'' critical thinking, and achieve good teaching effect.
Peer Review Status:Awaiting Review
Subjects: Psychology >> Social Psychology submitted time 2023-03-28 Cooperative journals: 《心理科学进展》
Abstract： Background: P-value is the most widely used statistical index for inference in science. A p-value greater than 0.05, i.e., nonsignificant results, however, cannot distinguish the two following cases: the absence of evidence or the evidence of absence. Unfortunately, researchers in psychological science may not be able to interpret p-values correctly, resulting in wrong inference. For example, Aczel et al (2018), after surveying 412 empirical studies published in Psychonomic Bulletin & Review, Journal of Experimental Psychology: General, and Psychological Science, found that about 72% of nonsignificant results were misinterpreted as evidence in favor of the null hypothesis. Misinterpretations of nonsignificant results may lead to severe consequences. One such consequence is missing potentially meaningful effects. Also, in matched-group clinical trials, misinterpretations of nonsignificant results may lead to false “matched” groups, thus threatening the validity of interventions. So far, how nonsignificant results are interpreted in Chinese psychological literature is unknown. Here we surveyed 500 empirical papers published in five mainstream Chinese psychological journals, to address the following questions: (1) how often are nonsignificant results reported; (2) how do researchers interpret nonsignificant results in these published studies; (3) if researchers interpreted nonsignificant as “evidence for absence,” do empirical data provide enough evidence for null effects? Method: Based on our pre-registration (https://osf.io/czx6f), we first randomly selected 500 empirical papers from all papers published in 2017 and 2018 in five mainstream Chinese psychological journals (Acta Psychologica Sinica, Psychological Science, Chinese Journal of Clinical Psychology, Psychological Development and Education, Psychological and Behavioral Studies). Second, we screened abstracts of these selected articles to check whether they contain negative statements. For those studies which contain negative statements in their abstracts, we searched nonsignificant statistics in their results and checked whether the corresponding interpretations were correct. More specifically, all those statements were classified into four categories (Correct-frequentist, Incorrect-frequentist: whole population, Incorrect-frequentist: current sample, Difficult to judge). Finally, we calculated Bayes factors based on available t values and sample sizes associated with those nonsignificant results. The Bayes factors can help us to estimate to what extent those results provided evidence for the absence of effects (i.e., the way researchers incorrectly interpreted nonsignificant results). Results: Our survey revealed that: (1) out of 500 empirical papers, 36% of their abstracts (n = 180) contained negative statements; (2) there are 236 negative statements associated with nonsignificant statistics in those selected studies, and 41% of these 236 negative statements misinterpreted nonsignificant results, i.e., the authors inferred that the results provided evidence for the absence of effects; (3) Bayes factor analyses based on available t-values and sample sizes found that only 5.1% (n = 2) nonsignificant results could provide strong evidence for the absence of effects (BF01 > 10). Compared with the results from Aczel et al (2019), we found that empirical papers published in Chinese journals contain more negative statements (36% vs. 32%), and researchers made fewer misinterpretations of nonsignificant results (41% vs. 72%). It worth noting, however, that there exists a categorization of ambiguous interpretations of nonsignificant results in the Chinese context. More specifically, many statements corresponding to nonsignificant results were “there is no significant difference between condition A and condition B”. These statements can be understood either as “the difference is not statistically significant”, which is correct, or “there is no difference”, which is incorrect. The percentage of misinterpretations of nonsignificant results raised to 64% if we adopt the second way to understand these statements, in contrast to 41% if we used the first understanding. Conclusion: Our results suggest that Chinese researchers need to improve their understanding of nonsignificant results and use more appropriate statistical methods to extract information from nonsignificant results. Also, more precise wordings should be used in the Chinese context.
Subjects: Psychology >> Statistics in Psychology submitted time 2020-10-17
Abstract： P-value is the most widely used statistical index for inference in science. Unfortunately, researchers in psychological science may not be able to interpret p-value correctly, resulting in possible mistakes in statistical inference. Our specific goal was to estimate how nonsignificant results were interpreted in the empirical studies published in Chinese Journals. Frist, We randomly selected 500 empirical research papers published in 2017 and 2018 in five Chinese prominent journals (Acta Psychological Sinica, Psychological Science, Chinese Journal of Clinical Psychology, Psychological Development and Education, Psychological and Behavioral Studies). Secondly, we screened the abstracts of the selected articles and judged whether they contained negative statements. Thirdly, we categorized each negative statement into 4 categories (Correct-frequentist, Incorrect-frequentist: whole population, Incorrect-frequentist: current sample, Difficult to judge). Finally, we calculated Bayes factors based on the t values and sample size associated with the nonsignificant results to investigate whether empirical data provide enough evidence in favor of null hypothesis. Our survey revealed that: (1) 36% of these abstracts (n = 180) mentioned nonsignificant results; (2) there were 236 negative statements in the article that referred to nonsignificant results in abstracts, and 41% negative statements misinterpreted nonsignificant results; (3) 5.1% (n = 2) nonsignificant results can provide strong evidence in favor of null hypothesis (BF01 > 10). The results suggest that Chinese researchers need to enhance their understanding of nonsignificant results and use more appropriate statistical methods to extract information from non-significant results.
Peer Review Status:Awaiting Review
Subjects: Environmental Sciences, Resource Sciences >> Basic Disciplines of Environmental Science and Technology submitted time 2020-06-21 Cooperative journals: 《干旱区研究》
Abstract：利用主被动微波卫星（SMAP）土壤含水量数据，从相同空间尺度上对比了全球在运行系统中3种常见遥感干旱指数[距平植被指数(AVI)、植被健康指数(VHI)、植被供水指数(VSWI)]在哈萨克斯坦农业干旱监测上的一致性。通过皮尔森相关系数（r）和肯德尔秩相关系数（τ），分别检验干旱指数与土壤含水量及其在干旱等级判断上的相关性，以评估遥感在哈萨克斯坦作物生长季中后期干旱监测中的适用性。结果表明：不同干旱指数在该地区一致性不高。基于植被状况的遥感干旱指数与土壤含水量相关性较低，而结合植被和地表温度的综合指数具有显著正相关。不同土层比较上，VSWI指数与作物根区（0~100 cm）土壤含水具有较强相关性（r>0.6），表明其对植物生长季中后期的土壤含水状况有较好的响应能力。
Subjects: Geosciences >> Geography submitted time 2020-01-06 Cooperative journals: 《干旱区地理》
Abstract：改革开放40 a以来，新疆土地利用和地表覆被发生了巨大变化，在产生巨大社会经济效益的同时，也产生了许多生态与环境问题。为了给未来新疆土地利用、水资源开发及社会经济可持续发展国土空间规划提供依据，通过采用分区分层的决策树方法和向量相似度的变化检测方法，完成了新疆2015年、2010年、2000年、1990年、1975年的土地覆被1∶100 000矢量数据集，准确反演了过去40 a（改革开放40 a）来新疆地表覆被变化过程，分析了新疆土地覆被变化与国家改革开放政策相互关系，从垦荒（1975—1990年）、农业资源开发（1990—2000年）、西部大开发（2000—2010年）、对口援疆（2010—2015年）4个阶段，阐述了国家政策力度和导向对土地覆被变化的影响。分析表明：新疆土地覆被变化由耕地开垦、人工表面增长的高速发展模式开始向兼顾生态文明建设的可持续发展方向转型，各主要地类的变化也由急剧发展转向基本可控。近40 a新疆耕地面积增加了128%（50 414.02 km2），新增耕地依照水土资源配置特征，遵循空间规律分布；人工表面（建设、交通、工矿用地）面积增加了197%（7 497.11 km2），在2000年后增速明显，2010年后南疆增加幅度很大；1990年前林地面积呈现减少趋势，1990年后呈增加的态势，新增林地广泛分布在全疆天然林封育保护范围和天保工程实施区内；湿地1990年前面积减少明显，1990—2000年保持稳定，2000年后呈增加趋势；草地和其他类型的面积呈现持续减少态势。
Subjects: Geosciences >> Other Disciplines of Geosciences submitted time 2019-09-10 Cooperative journals: 《干旱区研究》
Abstract：以乌海市晟辉能源技术公司沙区太阳能光伏电场为研究对象，对光伏矩阵内光伏板的前沿、后沿及光伏阵列行道处风沙输移情况进行观测，研究沙区光伏电站的风沙流输移规律。研究表明：① 各观测点输沙量均随着高度的增加呈降低趋势，光伏板前沿、后沿、行道处各观测点输沙量随高度增加的最佳拟合方程均为多项式函数，且R2均大于0.95，拟合结果可信。② 光伏板前沿、后沿处风沙流结构特征值大于1，风沙流呈非饱和状态，地表表现为风蚀。电场矩阵行道处风沙流结构特征值均小于1，风沙流为饱和状态，地表表现为堆积。由于光伏板对风沙流的导向作用，导致光伏板下方形成气流加速区，光伏板下方出现掏蚀现象，因此光伏板下方为场区内部风沙防治的重点区域。③ 光伏矩阵内部各观测点的输沙量均低于旷野处，且随着深入电站内部输沙量逐渐降低。沙区光伏电站控制沙害的关键位置为电站迎风边缘处。
Subjects: Geosciences >> Other Disciplines of Geosciences submitted time 2019-09-09 Cooperative journals: 《干旱区研究》
Abstract：为探寻天山地区气候模拟WRF（weather research and forecasting）模式中最优参数化方案组合，针对云微物理方案（MIC）、积云对流方案（CS）、行星边界层/近地面层方案（PBL/SLS）、陆面过程方案（LSM）以及长短波辐射方案（LSW）设计了6组季节尺度物理参数化方案敏感性试验，模拟时间设为2014-11-28—2015-12-01。利用地面气象站观测数据和GPM（global precipitation measurement）卫星降水数据（R≥0.6），对模式模拟的日最高、最低气温及降水进行验证。结果表明：WRF模式对气温的模拟效果较好，且对日最高气温（0.8
Subjects: Environmental Sciences, Resource Sciences >> Basic Disciplines of Environmental Science and Technology submitted time 2019-08-02 Cooperative journals: 《干旱区地理》
Abstract：干旱是全球范围内影响最为广泛的自然灾害之一，其所导致的土壤沙漠化、荒漠化和盐碱化给生态环境造成不可逆的危害。通过对MODIS数据进行投影转换、去云等预处理的基础上，利用地形校正对[WTBX]TVDI模型进行改进，构建了改进型的温度植被干旱指数（mTVDI）用于新疆干旱区旱情监测。利用土壤实测数据对mTVDI及传统的TVDI模型进行对比验证。研究结果表明：（1） 利用EVI与校正后的LST构建的mTVDIE对干旱区旱情的敏感度最高，与实测土壤水分数据的相关性R2为0.74。（2） 从空间上看，新疆2015年旱情分布以塔里木盆地和准噶尔盆地为两个干旱中心，旱情状况由严重逐步向周围山区递减至湿润状态。从时间上看，新疆6月、7月和8月旱情最为严重。（3） 研究利用TRMM降水数据对基于mTVDIE反演的新疆旱情时空分布特征进行对比分析，结果表明二者所表现出的旱情时空分布较为一致，不同时间段内的降水量与mTVDIE之间具有一定的相关性，且均通过了P<0.01显著性检验。综上，基于TVDI所提出的mTVDIE 能够有效开展新疆干旱区旱情监测，且精度较高，从而为今后定量化开展大区域尺度旱情监测研究提供参考。
Subjects: Dynamic and Electric Engineering >> Electrical Engineering submitted time 2019-03-05 Cooperative journals: 《电气工程学报》
Abstract：本文针对双芯对称型可控移相器（TCPST）推导了注入功率方程和注入电 流模型。针对两种不同的模型，利用电力系统分析综合程序 PSASP 6.2 提供的用户自 定义模型，构造了两种适合于 PSASP 的潮流算法，便于进行含 TCPST 电力系统的潮 流分析。基于 PSASP 6.2 搭建了 3 机 9 节点系统，并进行仿真。结果表明本文所搭建 的两种模型均能有效实现含 TPCST 系统的潮流计算，对于其他电力系统元件建模具有 一定的参考意义。
Subjects: Civil Engineering and Building Construction >> Basic Disciplines of Civil Engineering and Building Construction submitted time 2018-10-26 Cooperative journals: 《土木建筑工程信息技术》
Abstract：大型场馆类项目往往具有造型复杂、结构复杂、专业众多的特点。实际施工中也面临着施工组织难、工序穿插多、施工难度大的情况，应用BIM技术能较好地解决类似的问题[引用已删除]。本文主要介绍了郑州博物馆新馆项目在设计、施工两个阶段如何应用BIM技术解决上述问题，实现了高标准设计、高质量建设、高水平管理。通过此次综合应用，项目建立了由业主驱动，全过程、多参与方协同的BIM实施体系，形成了设计BIM向施工BIM过渡的方法经验，总结了BIM与施工生产业务流程相融合的管理模式。针对设计阶段复杂钢结构的空间定位、曲面幕墙的“深化+加工+施工”技术、基于BIM的“进度+资源+工作”计划管理提出了新的管理思路。本项目结合实际对BIM技术在大型场馆的应用进行探索，通过BIM技术在各个专业的应用，总结BIM技术对促进项目实施的帮助，为以后BIM技术在大型场馆工程应用提供了可参考性资料和有力的支撑。
Subjects: Civil Engineering and Building Construction >> Basic Disciplines of Civil Engineering and Building Construction submitted time 2018-10-26 Cooperative journals: 《土木建筑工程信息技术》
Abstract：大型场馆类项目往往具有造型复杂、结构复杂、专业众多的特点。实际施工中也面临着施工组织难、工序穿插多、施工难度大的情况，应用BIM技术能较好地解决类似的问题[引用已删除]。本文主要介绍了郑州博物馆新馆项目在设计、施工两个阶段如何应用BIM技术解决上述问题，实现了高标准设计、高质量建设、高水平管理。通过此次综合应用，项目建立了由业主驱动，全过程、多参与方协同的BIM实施体系，形成了设计BIM向施工BIM过渡的方法经验，总结了BIM与施工生产业务流程相融合的管理模式。针对设计阶段复杂钢结构的空间定位、曲面幕墙的“深化+加工+施工”技术、基于BIM的“进度+资源+工作”计划管理提出了新的管理思路。本项目结合实际对BIM技术在大型场馆的应用进行探索，通过BIM技术在各个专业的应用，总结BIM技术对促进项目实施的帮助，为以后BIM技术在大型场馆工程应用提供了可参考性资料和有力的支撑。
Subjects: Medicine, Pharmacy >> Preclinical Medicine submitted time 2017-12-07 Cooperative journals: 《南方医科大学学报》
Abstract： Objective To study the effect of allitridum on rapidly delayed rectifier potassium current (IKr) in HEK293 cell line. Methods HEK293 cells were transiently transfected with HERG channel cDNA plasmid pcDNA3.1 via Lipofectamine. Allitridum was added to the extracellular solution by partial perfusion after giga seal at the final concentration of 30 μmol/L. Whole-cell patch clamp technique was used to record the HERG currents and gating kinetics before and after allitridum exposure at room temperature. Results The amplitude and density of IHERG were both suppressed by allitridum in a voltage-dependent manner. In the presence of allitridum, the peak current of IHERG was reduced from 73.5±4.3 pA/pF to 42.1±3.6 pA/pF at the test potential of +50 mV (P<0.01). Allitridum also concentration-dependently decreased the density of the IHERG . The IC 50 of allitridum was 34.74 μmol/L with a Hill coefficient of 1.01. Allitridum at 30 μmol/L caused a significant positive shift of the steady-state activation curve of I HERG and a markedly negative shift of the steady-state inactivation of IHERG , and significantly shortened the slow time constants of I HERG deactivation. Conclusion Allitridum can potently block IHERG in HEK293 cells, which might be the electrophysiological basis for its anti-arrhythmic action.
Subjects: Astronomy >> Astrophysical processes submitted time 2017-09-26 Cooperative journals: 《天文研究与技术》
Abstract：谱线观测是上海天文台65 m射电望远镜的主要观测手段之一，在和美国国家射电天文台联合研制脉冲星和谱线观测终端的基拙上，开发了观测控制软件，设计了流量定标的硬件和软件，开发了频率校准程序。经过大量的观测测试，证明观测和数据校准系统的有效性，并于2015年下半年对国内用户开放，取得了大量的观测结果。详细介绍本终端的组成和功能，观测控制软件的流程，结合观测数据介绍流量定标和频率校准的处理方法和结果，并给出下一步的工作计划。
Subjects: Biology >> Botany >> Plant ecology, plant geography submitted time 2016-05-03
Abstract： Aims Accurate estimation of carbon density and storage is among the key challenges in evaluating ecosystem carbon sink potentials for reducing atmospheric CO2 concentration. It is also important for developing future conservation strategies and sustainable practices. Our objectives were to estimate the ecosystem carbon density and storage of Picea schrenkiana forests in Tianshan region of Xinjiang, and to analyze the spatial distribution and influencing factors. Methods Based on field measurements, the forest resource inventories, and laboratory analyses, we studied the carbon storage, its spatial distribution, and the potential influencing factors in Picea schrenkiana forest of Tianshan. Field surveys of 70 sites, with 800 m2 (28.3 m × 28.3 m) for plot size, was conducted in 2011 for quantifying arbor biomass (leaf, branch, trunk and root), grass and litterfall biomass, soil bulk density, and other laboratory analyses of vegetation carbon content, soil organic carbon content, etc. Important findings The carbon content of the leaf, branch, trunk and root of Picea schrenkianais varied from 46.56% to –52.22%. The vegetation carbon content of arbor and the herbatious/litterfall layer was 49% and 42%, respectively. The forest biomass of Picea schrenkiana was 187.98 Mg?hm–2, with 98.93% found in the arbor layer. The biomass in all layers was in the order of trunk (109.81 Mg?hm–2) > root (39.79 Mg?hm–2) > branch (23.62 Mg?hm–2) > leaf (12.76 Mg?hm–2). From the age-group point of view, the highest and the lowest biomass was found at the mature forest (48.70 Mg?hm–2) and young forest (30.72 Mg?hm–2), respectively. The carbon density and storage were 544.57 Mg?hm–2 and 290.84 Tg C, with vegetation portion of 92.57 Mg?hm–2 and 53.14 Tg C, and soil portion of 452.00 Mg?hm–2 and 237.70 Tg C, respectively. The spatial distribution of carbon density and storage appeared higher in the western areas than those in the eastern regions. In the western Tianshan Mountains (e.g., Yili), carbon density was the highest, whereas the central Tianshan Mountains (e.g., Manasi, Fukang, Qitai) also had high carbon density. In the eastern Tianshan Mountains (e.g., Hami), it was low. This distribution seemed consistent with the changes in environmental conditions. The primary causes of carbon density difference might be a combined effects of multiple environmental factors such as terrain, precipitation, temperature, and soil.
Peer Review Status:Awaiting Review
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