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禹州大刘山煤业采空区水害防治技术研究与应用

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煤炭与化工 2024年第3期47卷 70-73页

作者：连志伟禹州大刘山煤业河南许昌461670

禹州市大刘山煤业有限公司为兼并重组矿井,存在附近老窑多,采空区错综复杂和部分地点水文地质情况不明等问题。针对这一情况,为保证大刘山煤业安全生产,采用物探与钻探相结合的方法对该矿采空区积水进行探查,圈定了3处电阻异常区,并施工... 详细信息

禹州市大刘山煤业有限公司为兼并重组矿井,存在附近老窑多,采空区错综复杂和部分地点水文地质情况不明等问题。针对这一情况,为保证大刘山煤业安全生产,采用物探与钻探相结合的方法对该矿采空区积水进行探查,圈定了3处电阻异常区,并施工了17个钻孔进行验证和采空区积水疏放,最终疏放积水7.9万m^(3),有效地保证了后期采掘作业的安全。

关键词：水文地质采空区积水水害防治

室内温度和相对湿度对有氧运动表现及体温调节的影响

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中国体育科技 2024年第4期60卷 47-53页

作者：史永祥连之伟胡胜谦胡莹颖上海交通大学上海200240 中国船舶及海洋工程设计研究院上海200011

目的:探讨室内温度、相对湿度(relative humidity,RH)及其交互作用对有氧运动表现及体温调节的影响。方法:采用正交实验设计,将温度(22℃、25℃、28℃)和RH(40%RH、55%RH、70%RH)组合为9组实验条件,16名身体健康的年轻男性受试者依次在... 详细信息

目的:探讨室内温度、相对湿度(relative humidity,RH)及其交互作用对有氧运动表现及体温调节的影响。方法:采用正交实验设计,将温度(22℃、25℃、28℃)和RH(40%RH、55%RH、70%RH)组合为9组实验条件,16名身体健康的年轻男性受试者依次在每种实验条件下进行递增负荷运动。实时监测皮肤温度与耳温变化,对各阶段体温平均值和增长率进行配对样本t检验。采用方差分析判断温度、RH及其交互作用对力竭时间的影响,并进行两两比较。结果:温度和RH会显著影响递增负荷运动的力竭时间(P=0.005,P=0.032),在28℃环境中力竭时间比22℃和25℃中更短(P=0.001,P=0.033),在70%RH的环境中力竭时间比40%RH中更短(P=0.009),但温度与RH的交互作用对力竭时间无显著性差异(P=0.871);28℃和70%RH的环境中核心温度偏高,28℃、55%RH和70%RH的环境中皮肤温度偏高。结论:28℃和70%RH对有氧运动表现有负面影响,且使运动过程中的体温明显偏高,但温度与RH对有氧运动表现的影响并没有交互作用。

关键词：热舒适有氧运动核心温度皮肤温度

Application of statistical analysis of sample size:How many occupant responses are required for an indoor environmental quality(IEQ)field study

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Building Simulation 2023年第4期16卷 577-588页

作者： Heng Du zhiwei lian Li Lan Dayi Lai Department of Architecture School of DesignShanghai Jiao Tong UniversityShanghai 200240China

Determining required sample size is one of the critical pathways to reproducible,reliable and robust results in human-related *** paper aims to answer a fundamental but often overlooked question:what sample size is required in surveys of occupant responses to indoor environmental quality(IEQ).The statistical models are introduced in order to promote determining required sample size for various types of data analysis methods commonly used in IEQ field *** Monte Carlo simulations are performed to verify the statistical methods and to illustrate the impact of sample size on the study accuracy and *** examples are presented to illustrate how to determine the value of the parameters in the statistical models based on previous similar research or existing *** required sample size including“worst”and“optimal”cases in each condition is obtained by this method and *** is indicated that 385 is a“worst case”sample size to be adequate for a subgroup analysis,while if the researcher has an estimate of the study design and outcome,the“optimal case”sample size can potentially be *** the required sample size is not achievable,the uncertainty in the result can properly interpret via a confidence *** is hoped that this paper would fill in the gap between statistical analysis of sample size and IEQ field research,and it can provide a useful reference for researchers when planning their own studies.

关键词： indoor environmental quality built environment field study sample size thermal comfort

The effect of noise exposure on sleep quality of urban residents:A comparative study in Shanghai,China

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Building Simulation 2023年第4期16卷 603-613页

作者： Xinbo Xu Li Lan Yuxiang Sun zhiwei lian School of Design Shanghai Jiao Tong UniversityShanghai 200240China China Institute of Urban Governance Shanghai Jiao Tong UniversityShanghai 200030China

Noise exposure is becoming extremely common in urban area,but its specific impact on sleep remains *** the limitations of previous researches,a field study which can conduct both horizontal and longitudinal analysis was *** participants were tested during two weeks in their homes,and the noise level of bedroom was artificially regulated by changing the status of window and *** the 1050 test nights in 75 households,noise exposure was reflected from both instrument monitoring at night and perception questionnaire in the morning,and sleep quality was accessed from actigraphy and *** analysis results showed that,92.3%of the bedroom acoustic environment did not meet the minimum requirements of Chinese standards,and 87.9%of subjects had ever experienced harmful noise during the test ***,sleep quality was affected by noise exposure from the perspective of both physiological and psychological;the duration of rapid eye movement(REM)sleep was significantly(p<0.05)shortened with the increase of sound intensity,the duration of deep sleep shortened and subjective sleep quality worsened significantly(p<0.05)with the increase of acoustic sensation *** addition,females were more sensitive to noise exposure and their subjective sleep quality was more likely to be influenced by *** study has important implications for acoustic environment design of bedrooms in cities,and suggested more attention should be paid to the anxiety caused by noise exposure.

关键词： noise exposure sleep quality sound intensity subjective perception urban governance

A sleep staging model for the sleep environment control based on machine learning

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建筑模拟(英文) 2023年第8期16卷 1409-1423页

作者： Ting Cao zhiwei lian Heng Du Jingyun Shen Yilun Fan Junmeng Lyu School of Design Shanghai Jiao Tong UniversityShanghai 200240China

To date,dynamic sleep environment has been attracted the focus of *** to the individual difference on sleep phase and thermal comfort,changes in sleep environment should be occupant-centered,and precise regulation of the environment required current sleep ***,few studies connected occupants and the environment through physiological signal-based model of sleep ***,this study tried to develop a data driven sleep staging model with higher accuracy through sleep experiments collecting *** database was processed and selected efficiently according to the characteristics of physiological ***,the sleep staging model with an average accuracy of 93.9%was built,and other mean indicators(precision:82.5%,recall:83.1%,F1 score:82.8%)performed *** features adopted by model were found to come from different brain regions,and the global brain signals were suggested to play an important role in the construction of sleep staging ***,the computational processing of physiology signals should consider their characteristics,i.e.,time domain,frequency domain,time-frequency domain and nonlinear *** model obtained in this study may deliver a credible reference to advance the research on control of sleep environment.

关键词： sleep environment sleep staging model physiological signals machine learning environmental control

Parametric study on the sleep thermal environment

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Building Simulation 2022年第5期15卷 885-898页

作者： Ting Cao zhiwei lian Jingwen Zhu Xinbo Xu Heng Du Qiantao Zhao School of Design Shanghai Jiao Tong UniversityShanghai 200240China

Sleep thermal environment has a great effect on occupants7 sleep *** purpose of this study was to explore the relationships between sleep thermal environment parameters and sleep quality in winter and *** whole experiments involved indoor ambient temperatures(winter:17℃,20℃,23℃;summer:23℃,26℃,29℃)and relative humidity(RH;winter:40%,55%,70%;summer:40%,60%,80%).A total of 18 young subjects(23±2 years old)were divided into the two different season groups to experience the corresponding environmental *** subjective environmental perception and objective physiological signals were *** results showed that thermal sensations at 20℃in winter,as well as 26℃in summer,were considered as the thermal neutral *** sensation in winter before sleep was susceptible to SET*,while the middle value of SET*(32℃)related to the middle indoor air temperature(26℃)and air humidity(60%)before and after sleep could be the summer combination of neutral thermal ***,cold and wet environment in winter was found to seriously affect the deep *** summer,mild temperature contributing to good sleep quality might weaken the effect of humidity on *** combining the sleep environmental perception result with contour line and regression analysis on objective sleep quality,the suggested values of thermal environment parameters for young adults(21-25 years old)were as follows:20.3℃and 56%RH in winter,as well as 26.1℃and 52%RH in summer.

关键词： sleep thermal environment moderate parameters thermal sensation humid sensation interaction effect-regression analysis

The effects of light illuminance and correlated color temperature on mood and creativity

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Building Simulation 2021年第3期14卷 463-475页

作者： Li Lan Sarra Hadji Lulu Xia zhiwei lian Department of Architecture School of DesignShanghai Jiao Tong UniversityShanghai200240China

The lighting environment is one of the indoor environmental factors that may influence *** combined effects of illumination(300 lx vs.2000 lx)and color temperature(3000 K vs.6000 K)on mood and creativity were investigated in 24 *** exposure,participants completed questionnaires to assess their mood and lighting perceptions,performed creative and analytical tasks,and collected saliva samples for analysis of melatonin *** interactive effect of illuminance and color temperature on the mood was *** participants performed better on the performance of Flexibility,Fluency and Originality in the verbal creative task when they expressed higher positive mood(at 2000 lx,6000 K and 300 lx,3000 K)and performed better on the performance of Resistance to closure in the figural creative task when they reported the lowest positive mood(at 2000 lx,3000 K).Analytical thinking,including calculation and echoic memory skills,was facilitated at the lighting setting(300 lx,6000 K)that induced the least affective *** significant difference in melatonin concentration was *** evidence implies that the affective state of the occupants was influenced by light and that their creative performance was altered *** findings will help to elaborate a design guideline on the lighting environment according to the specific needs of different tasks.

关键词： lighting color temperature illumination mood creativity productivity

Multivariate analysis of subjective evaluation of indoor lighting environment

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Frontiers of Architectural Research 2021年第3期10卷 614-624页

作者： Jingyun Shen zhiwei lian School of Design Shanghai Jiao Tong UniversityShanghai 200240China China Institute of Urban Governance Shanghai Jiao Tong UniversityShanghai 200030China

Though subjective feelings affected by lighting have been studied a lot,multivariate experimental studies are lacking in this research *** composite rotatable design(CCRD)was applied to investigate the influence of illuminance,correlated color temperature(CCT)and illuminance uniformity on satisfaction in this study.A series of subject experiments were carried out and polynomial regression models of luminous satisfaction for different activity scenarios were *** and CCT affected the satisfaction significantly in visual task scenarios,and the effect of them was independent with each other,which was demonstrated by the regression model(R2=0.89).The variation of luminous satisfaction in general activity scenarios cannot be fully explained by the three investigated *** results contributed to the knowledge of multivariate analysis of luminous environment and indicated that much could be expected referring to the application of CCRD in this field.

关键词： Lighting satisfaction Multivariate analysis Illuminance CCT Uniformity Central composite rotatable design City

Thermal comfort models and their developments:A review

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能源与人工环境(英文) 2021年第1期2卷 21-33页

作者： Qiantao Zhao zhiwei lian Dayi Lai Department of Architecture School of DesignShanghai Jiao Tong UniversityChina

In the past several years,thermal comfort,especially development and application of thermal comfort model,has been a research focus of building *** the 1970s,a series of thermal comfort models based on people’s thermal sensation to environment have been established,and gradually became an important part of the field of thermal comfort *** this review,the existing thermal comfort models are summarized from various perspectives,such as models applied in different environments like sleeping environment and outdoor ***,models used for different groups people,such as elderly and different races are *** the part,adaptive models are *** additions,data-driven models were *** paper introduced the advantages and disadvantages of each *** on the above review,future research work of thermal comfort model is proposed.

关键词： Thermal comfort Model Human thermoregulation Built environment Development