期刊文献+
共找到6,947篇文章
< 1 2 250 >
每页显示 20 50 100
基于CREAM方法的海上风机安装人因可靠性评估
1
作者 杜尊峰 刘治余 +1 位作者 杨源 赵亚琦 《中国海洋平台》 2024年第3期27-34,共8页
采用认知可靠性和差错分析法(Cognitive Reliability and Error Analysis Method,CREAM)对固定式海上风机安装作业的人因可靠性进行评估,并引入结构熵权法和马尔可夫方法对传统CREAM进行改进,实现人因差错概率、平均人为差错时间等人因... 采用认知可靠性和差错分析法(Cognitive Reliability and Error Analysis Method,CREAM)对固定式海上风机安装作业的人因可靠性进行评估,并引入结构熵权法和马尔可夫方法对传统CREAM进行改进,实现人因差错概率、平均人为差错时间等人因可靠性指标的定量计算。在充分结合现实条件的情况下,考虑海上风机安装的天气、海浪和操作水平等环境和人为因素的影响,针对固定式海上风机安装作业的要求和特点,结合作业人员可靠性评估结果,从操作素质、组织管理、环境改善等方面提出发展建议。 展开更多
关键词 海上风机安装 人因可靠性评估 cream
下载PDF
Effect of Soursop Puree and Gum Arabic on the Sensory Properties of Non-Dairy Coconut Milk-Based Ice Cream
2
作者 Sarah N. Mulwa Symon M. Mahungu Benard K. Muinde 《Food and Nutrition Sciences》 2023年第7期670-686,共17页
Coconut (Cocos nucifera) milk-based ice cream is one of the innovative non-dairy milk products gaining popularity among consumers. The objective was to develop coconut milk-based ice cream incorporated with soursop (A... Coconut (Cocos nucifera) milk-based ice cream is one of the innovative non-dairy milk products gaining popularity among consumers. The objective was to develop coconut milk-based ice cream incorporated with soursop (Annona muricata) fruit puree and gum Arabic from Acacia senegal var. kerensis, conduct a sensory evaluation using descriptive tests by trained panelists (n = 9) then evaluate for consumer acceptability by semi trained panelists (n = 30). A seven-point hedonic scale for colour, taste, flavour, texture and overall acceptability was used. The data obtained was subjected to analysis of variance (ANOVA) and the means were separated to determine their significance differences. Principal Component Analysis (PCA) was done for factor reduction to make it easy for the multi-dimensional descriptive data to be interpreted. PCA results indicated that unit increase in soursop and gum Arabic in the ice cream led to 83.1% increase in starchy taste, 78.3% increase in consistency and 73.6% decrease in coconut aroma. For consumer acceptability test, the obtained results showed that, soursop puree addition at successive levels led to a statistically significant effect (p < 0.05) on colour, flavour, texture, taste and overall acceptability while of gum Arabic incorporation was not significant (p > 0.05) for all attributes. The effect due to interaction between gum Arabic and soursop puree at the different levels however was significant for colour, flavour and texture but not significant for taste and overall acceptability. Our results therefore point to a potential application of soursop fruit and gum Arabic as alternative ingredients in the manufacture of a non-dairy ice cream with desirable sensory properties that would expand the variety of options consumers can choose from. 展开更多
关键词 Consumer Acceptability Ice cream Non-Dairy Sensory Properties Soursop Puree
下载PDF
优化的CREAM失误概率预测法在特种印刷企业的应用
3
作者 楚作东 何叶 +2 位作者 徐文庆 邓利民 彭敏君 《安全》 2024年第11期25-30,共6页
为弥补认知可靠性与失误分析法(CREAM)只能评估某项工作平均作业失误概率的缺陷,提出优化的CREAM,用于预测具体人员从事某项具体工作的失误概率。将生理和心理因素纳入人因可靠性评估体系,采用实验性测量手段予以表征,从而建立人内在因... 为弥补认知可靠性与失误分析法(CREAM)只能评估某项工作平均作业失误概率的缺陷,提出优化的CREAM,用于预测具体人员从事某项具体工作的失误概率。将生理和心理因素纳入人因可靠性评估体系,采用实验性测量手段予以表征,从而建立人内在因素权重因子、量化生理和心理因素对认知功能失误概率的影响,预测各作业步骤和整个作业过程的失误概率。将上述方法应用于某特种印刷企业的关键作业失误概率预测,结果显示:操作工的作业失误概率预测值范围为3.1×10^(-4)~9.6×10^(-2),且预测值与操作工目标作业的日常违章次数有关联性,证明优化后的CREAM具有可靠性。 展开更多
关键词 认知可靠性与失误分析法(cream) 失误概率(HEP) 生理因素 心理因素 人因可靠性
下载PDF
Quantification of the adulteration concentration of palm kernel oil in virgin coconut oil using near-infrared hyperspectral imaging
4
作者 Phiraiwan Jermwongruttanachai Siwalak Pathaveerat Sirinad Noypitak 《Journal of Integrative Agriculture》 SCIE CSCD 2024年第1期298-309,共12页
The adulteration concentration of palm kernel oil(PKO)in virgin coconut oil(VCO)was quantified using near-infrared(NIR)hyperspectral imaging.Nowadays,some VCO is adulterated with lower-priced PKO to reduce production ... The adulteration concentration of palm kernel oil(PKO)in virgin coconut oil(VCO)was quantified using near-infrared(NIR)hyperspectral imaging.Nowadays,some VCO is adulterated with lower-priced PKO to reduce production costs,which diminishes the quality of the VCO.This study used NIR hyperspectral imaging in the wavelength region 900-1,650 nm to create a quantitative model for the detection of PKO contaminants(0-100%)in VCO and to develop predictive mapping.The prediction equation for the adulteration of VCO with PKO was constructed using the partial least squares regression method.The best predictive model was pre-processed using the standard normal variate method,and the coefficient of determination of prediction was 0.991,the root mean square error of prediction was 2.93%,and the residual prediction deviation was 10.37.The results showed that this model could be applied for quantifying the adulteration concentration of PKO in VCO.The prediction adulteration concentration mapping of VCO with PKO was created from a calibration model that showed the color level according to the adulteration concentration in the range of 0-100%.NIR hyperspectral imaging could be clearly used to quantify the adulteration of VCO with a color level map that provides a quick,accurate,and non-destructive detection method. 展开更多
关键词 virgin coconut oil ADULTERATION CONTAMINATION palm kernel oil hyperspectral imaging
下载PDF
Effect of Adhesive Type on the Quality of Coconut Shell Charcoal Briquettes Prepared by the Screw Extruder Machine
5
作者 Samsudin Anis Deni Fajar Fitriyana +7 位作者 Aldias Bahatmaka Muhammad Choirul Anwar Arsyad Zanadin Ramadhan Fajar Chairul Anam Raffanel Adi Permana Ahmad Jazilussurur Hakim Natalino Fonseca Da Silva Guterres Mateus De Sousa Da Silva 《Journal of Renewable Materials》 EI CAS 2024年第2期381-396,共16页
Indonesia is one of the largest coconut-producing countries in the world.The utilization of coconut shell waste into briquettes will increase the selling value and become a great export opportunity.However,the effect ... Indonesia is one of the largest coconut-producing countries in the world.The utilization of coconut shell waste into briquettes will increase the selling value and become a great export opportunity.However,the effect of adhesives on the quality of coconut shell charcoal briquettes made using screw extruder machine has not been widely studied.This study aims to determine the effect of adhesive type on the quality of coconut shell charcoal briquettes.The process of fabricating briquettes in this study included crushing,mixing,blending,pressing,and drying.In the mixing process,3 types of adhesives were used,namely tapioca flour(Briquette_1),cassava flour(Briquette_2),and modified cassava flour(Briquette_3)with a concentration of 5%of the weight of coconut shell charcoal powders.The quality of the resulting briquettes and commercial briquettes will be evaluated by moisture content,ash content,volatile matter,fixed carbon,calorific value,density,compressive,and drop test testing.The results of this research showed that the type of adhesive had a significant effect on the quality of the briquettes produced.Specimen Briquette_1 had better quality than commercial briquettes(Briquette_4)and other briquette specimens.The test results showed that Briquette_1 produced briquettes with better compressive strength and friability than the other specimens,at 6.95 N/mm^(2) and 4.44%,respectively.The moisture content,ash content,fixed carbon,and calorific value of Briquette_1 have met the requirements set by the Indonesian National Standard(SNI)number 01-6235-2000.Meanwhile,the volatile matter content and density of Briquette_1 are by the standards of Japan and the United States America(USA). 展开更多
关键词 coconut charcoal BRIQUETTES ADHESIVE MIXING BLENDING PRESSING
下载PDF
Simple and High-Yield Synthesis of a Thinner Layer of Graphenic Carbon from Coconut Shells
6
作者 Retno Asih Haniffudin Nurdiansah +6 位作者 Mochamad Zainuri Deni S.Khaerudini Angelinus T.Setiawan A.Y.Dias Pudji Untoro Ahmad Sholihand Darminto 《Journal of Renewable Materials》 EI CAS 2024年第5期969-979,共11页
Biomass has become of recent interest as a raw material for‘green’graphenic carbon(GC)since it promotes an environmentally friendly approach.Here,we investigate a single pyrolysis route to synthesize GC from coconut... Biomass has become of recent interest as a raw material for‘green’graphenic carbon(GC)since it promotes an environmentally friendly approach.Here,we investigate a single pyrolysis route to synthesize GC from coconut shells which provides a simple method and can produce a high yield,thus being convenient for large-scale pro-duction.The pyrolysis involves a stepped holding process at 350℃ for 1 h and at 650℃ or 900℃ for 3 h.The GC sample resulted at the 900℃ pyrolysis has a thinner sheet,a less porous structure,a higher C/O ratio,and an enhanced electrical conductivity than those pyrolyzed at 650℃.The addition of Na3PO4 catalyst has no signifi-cant effects on the GC structures obtained by this route.The single pyrolysis route generates thinner GC sheets compared to the two-step heat treatment followed by the liquid phase exfoliation(LPE)procedure.Nevertheless,the latter method offers a formation of clean samples with a porous or holey feature which has potential for advanced energy-storage applications. 展开更多
关键词 Graphenic carbon BIOMASS coconut shells PYROLYSIS synthesis route
下载PDF
Enhancing Erectile Function and Alleviating Andropause Symptoms: Clinical Efficacy of a Human Stem Cell Conditioned Medium Cream
7
作者 Hoichi Amano 《Health》 2024年第7期626-634,共9页
Erectile dysfunction (ED) is increasingly prevalent in Japan, exceeding 30%, and increasing with age. Unhealthy lifestyle habits, obesity, insufficient exercise, and smoking have been implicated in its pathogenesis, a... Erectile dysfunction (ED) is increasingly prevalent in Japan, exceeding 30%, and increasing with age. Unhealthy lifestyle habits, obesity, insufficient exercise, and smoking have been implicated in its pathogenesis, along with endothelial dysfunction of the corpora cavernosa and impaired blood flow to the penis considered underlying factors. However, the current treatments are limited to Phosphodiesterase-5 (PDE5) inhibitors. ED is the primary symptom of andropathy. This study reports the clinical efficacy of human stem cell-conditioned medium cream for ED treatment. Ten men without underlying diseases suspected of andropause with ED (mean age 43.2 ± 4.4 y, Hb 15.2 ± 0.6 gm/dL, AST/ALT 30.2/37.9 ± 12.4/14.0, eGFR 82.7 ± 12.4 mL/min/1.73 m2) were targeted. The cream was applied twice daily to the genital and scrotal areas. The erectile hardness score (EHS), International Index of Erectile Function-5 (IIEF-5), and Aging Male Symptoms (AMS) scale were used to evaluate the participants before and 30 days after use, and the results were compared using paired t-tests. The post-use qualitative opinions were collected through interviews. Significant improvements were observed compared to baseline in the IIEF-5 (11.8 ± 4.6→17.2 ± 5.1, P < 0.001), and AMS (46.3 ± 6.7→37.6 ± 5.3, P < 0.001) scores post cream use. EHS did not show a statistically significant difference, but a trend towards improvement was observed. Qualitative feedback included increased morning erection, improved maintenance of erection during intercourse, and reduced post work fatigue. Human stem cell-conditioned medium contains endothelial growth factors that potentially contribute to the improvement of ED and andropause by enhancing corporal endothelial function. Future studies should include control groups to further investigate the efficacy of these treatments. 展开更多
关键词 Erectile Dysfunction ANDROPAUSE Human Stem Cell Conditioned Medium cream Stem Cell
下载PDF
STPA和CREAM方法在飞行冲突调配人因差错研究中的应用
8
作者 袁乐平 吴昊 《安全与环境学报》 CAS CSCD 北大核心 2024年第5期1886-1893,共8页
为了研究管制员飞行冲突调配的人因差错问题,进而有效评估管制员解决飞行冲突的可靠性,以保障空中交通的安全运行,提出系统理论过程分析(System Theoretic Process Analysis, STPA)与认知可靠性与失误分析方法(Cognitive Reliability an... 为了研究管制员飞行冲突调配的人因差错问题,进而有效评估管制员解决飞行冲突的可靠性,以保障空中交通的安全运行,提出系统理论过程分析(System Theoretic Process Analysis, STPA)与认知可靠性与失误分析方法(Cognitive Reliability and Error Analysis Method, CREAM)相结合的人因可靠性分析方法。首先,通过STPA方法构建系统控制模型,识别不安全控制行为(Unsafe Control Action, UCA)以及致因因素,找到管制员在调配飞行冲突过程中可能存在的差错行为;其次,基于CREAM扩展法对管制员的差错行为进行定量分析,得到管制员调配飞行冲突的人因失误概率。研究显示:使用该方法能够系统、全面地识别出管制员在调配飞行冲突过程中出现的差错行为,进而计算管制员飞行冲突调配的人因失误概率。实例分析表明该方法可以预测管制员在飞行冲突调配过程中的人因失误概率及可靠性,为管制员人因可靠性分析提供了新思路。 展开更多
关键词 安全工程 空中交通管制员 飞行冲突 系统理论过程分析(STPA) 认知可靠性与失误分析方法(cream) 人因可靠性
下载PDF
An Improved CREAM Model Based on DS Evidence Theory and DEMATEL
9
作者 Zhihui Xu Shuwen Shang +3 位作者 Yuntong Pu Xiaoyan Su Hong Qian Xiaolei Pan 《Computer Modeling in Engineering & Sciences》 SCIE EI 2024年第3期2597-2617,共21页
Cognitive Reliability and Error Analysis Method(CREAM)is widely used in human reliability analysis(HRA).It defines nine common performance conditions(CPCs),which represent the factors thatmay affect human reliability ... Cognitive Reliability and Error Analysis Method(CREAM)is widely used in human reliability analysis(HRA).It defines nine common performance conditions(CPCs),which represent the factors thatmay affect human reliability and are used to modify the cognitive failure probability(CFP).However,the levels of CPCs are usually determined by domain experts,whichmay be subjective and uncertain.What’smore,the classicCREAMassumes that the CPCs are independent,which is unrealistic.Ignoring the dependence among CPCs will result in repeated calculations of the influence of the CPCs on CFP and lead to unreasonable reliability evaluation.To address the issue of uncertain information modeling and processing,this paper introduces evidence theory to evaluate the CPC levels in specific scenarios.To address the issue of dependence modeling,the Decision-Making Trial and Evaluation Laboratory(DEMATEL)method is used to process the dependence among CPCs and calculate the relative weights of each CPC,thus modifying the multiplier of the CPCs.The detailed process of the proposed method is illustrated in this paper and the CFP estimated by the proposed method is more reasonable. 展开更多
关键词 Human reliability analysis cream uncertainty modeling DEPENDENCE Dempster-Shafer evidence theory DEMATEL
下载PDF
Improvement of Mechanical Qualities of Clay Material through Coconut Fiber Stabilization
10
作者 Boukaré Ouedraogo Abdoulaye Compaore +2 位作者 Moumouni Derra Kalifa Palm Dieudonné Joseph Bahiebo 《Materials Sciences and Applications》 2024年第7期201-212,共12页
The criticisms regularly formulated towards clay or soil, in general, are its weak mechanical qualities and low water quality. Therefore, it is necessary to find techniques to improve the properties of this material, ... The criticisms regularly formulated towards clay or soil, in general, are its weak mechanical qualities and low water quality. Therefore, it is necessary to find techniques to improve the properties of this material, which is widely used worldwide. Here, we propose stabilizing clay with coconut fiber as a solution to enhance its mechanical properties. To do this, we used an experimental method, first determining the geotechnical properties of the clay and then its mechanical properties. The geotechnical study using the Proctor Test revealed that the dry density of the clay is γb = 1.42 g/cm3, and its water content is W = 22.3%. By applying the rolling method, the Atterberg limits were determined: liquid limit Wl = 63.6, plastic limit Wp = 27.9, plasticity index Ip = 35.7, and consistency index Ic = 1.46. With 25 P = 35.7 1.3, according to the water classification, it falls into class A3ts. The mechanical part focused on compression and flexural strengths obtained using a PROETI hydraulic press. We obtained a flexural strength of 0.63 MPa for simple clay (BA);0.89 MPa for clay + 0.25% fiber (BAF1/4);1.68 MPa for clay + 0.5% fiber (BAF1/2);1.87 MPa for clay + 0.75% fiber (BAF3/4);and 3.91 MPa for clay + 1% fiber (BAF1). As for the compression strength, BA = 5.90 MPa, BAF1/4 = 6.395 MPa, BAF1/2 = 6.292 MPa, BAF3/4 = 6.065 MPa, and BAF1 = 5.423 MPa. The addition of fiber has thus improved the mechanical qualities of the simple clay. These stabilized bricks can be used for sustainable and bioclimatic construction, providing higher durability and good comfort. 展开更多
关键词 Compression Strength Flexural Strength coconut Fiber CLAY Geotechnical Properties
下载PDF
Coconut Fiber Pyrolysis: Bio-Oil Characterization for Potential Application as an Alternative Energy Source and Production of Bio-Degradable Plastics
11
作者 Patrick Ssemujju Lubowa Hiram Ndiritu +1 位作者 Peter Oketch James Mutua 《World Journal of Engineering and Technology》 2024年第2期310-319,共10页
The current energy crisis could be alleviated by enhancing energy generation using the abundant biomass waste resources. Agricultural and forest wastes are the leading organic waste streams that can be transformed int... The current energy crisis could be alleviated by enhancing energy generation using the abundant biomass waste resources. Agricultural and forest wastes are the leading organic waste streams that can be transformed into useful alternative energy resources. Pyrolysis is one of the technologies for converting biomass into more valuable products, such as bio-oil, bio-char, and syngas. This work investigated the production of bio-oil through batch pyrolysis technology. A fixed bed pyrolyzer was designed and fabricated for bio-oil production. The major components of the system include a fixed bed reactor, a condenser, and a bio-oil collector. The reactor was heated using a cylindrical biomass external heater. The pyrolysis process was carried out in a reactor at a pressure of 1atm and a varying operating temperature of 150˚C, 250˚C, 350˚C to 450˚C for 120 minutes. The mass of 1kg of coconut fiber was used with particle sizes between 2.36 mm - 4.75 mm. The results show that the higher the temperature, the more volume of bio-oil produced, with the highest yield being 39.2%, at 450˚C with a heating rate of 10˚C/min. The Fourier transformation Infrared (FTIR) Spectroscopy analysis was used to analyze the bio-oil components. The obtained bio-oil has a pH of 2.4, a density of 1019.385 kg/m<sup>3</sup>, and a calorific value of 17.5 MJ/kg. The analysis also showed the presence of high-oxygenated compounds;carboxylic acids, phenols, alcohols, and branched oxygenated hydrocarbons as the main compounds present in the bio-oil. The results inferred that the liquid product could be bestowed as an alternative resource for polycarbonate material production. 展开更多
关键词 Batch Pyrolysis Technology coconut Fiber BIO-OIL Fourier Transformation Infrared Analysis
下载PDF
基于CREAM和AHP的残疾人驾驶员人因可靠性分析
12
作者 魏灿 《机电产品开发与创新》 2024年第2期217-221,共5页
依据我国残疾人驾驶机动车辆现状,提出一种基于AHP的残疾人驾驶车辆人因可靠性分析方法。根据残疾人应对道路交通突发事件时需要执行的任务,改进CPC因子;针对人因可靠性分析法存在的片面性问题,采用层次分析法建立CPC因子网络层次结构,... 依据我国残疾人驾驶机动车辆现状,提出一种基于AHP的残疾人驾驶车辆人因可靠性分析方法。根据残疾人应对道路交通突发事件时需要执行的任务,改进CPC因子;针对人因可靠性分析法存在的片面性问题,采用层次分析法建立CPC因子网络层次结构,计算其权重,对残疾人驾驶员执行应对道路交通突发事件的任务的人因失误概率进行预测。研究结果表明,从方法的科学性性和可行性角度分析,改进后的CREAM方法研究该问题更具优势。 展开更多
关键词 cream 层次分析法 人因可靠性 残疾人驾驶员 交通安全
下载PDF
Coconut oil research:Past,present,and future directions
13
作者 Jiao-Jiao Yin He Huang +6 位作者 Xiao-Ming Jiang Xing-Yang Guo Bao-Hui Pan Pan Gao Wu Zhong Chuan-Rong Hu Dong-Ping He 《Food and Health》 2024年第1期43-52,共10页
Coconut oil contains a rich amount of medium-chain fatty acids,including lauric acid,decanoic acid,and octanoic acid,as well as the corresponding medium-chain triglycerides.It possesses functional attributes such as f... Coconut oil contains a rich amount of medium-chain fatty acids,including lauric acid,decanoic acid,and octanoic acid,as well as the corresponding medium-chain triglycerides.It possesses functional attributes such as facile digestion and absorption,as well as antibacterial and antioxidant properties.The study utilized the Citespace and VOSviewer visual analysis software to examine the quantity of published papers,authors,publishing institutions,research hotspots and frontiers of 3442 effective literatures on the theme of"coconut oil"in the Web of Science(WoS)Core Collection database.The research on coconut oil can be condensed into four primary sections:(1)investigation and utilization of physiochemical characteristics of coconut oil,(2)analysis of nutritional composition and study of the effectiveness of coconut oil,(3)identification of adulteration in coconut oil,(4)evaluation of the impact of coconut oil as a dietary supplement on animal metabolism.Additionally,research focal points have evolved in three distinct phases.Prior to 2008,numerous studies were conducted to investigate the precise fatty acid makeup of coconut oil and its potential for lowering cholesterol levels.From 2009 to 2016,significant emphasis was placed on examining the impact of coconut oil on methane production in ruminants.Between 2018 to 2023,the main focus will be on investigating how nanoparticles can alter the properties of coconut oil.In the future,the anticipated research areas of interest are expected to focus on the rapid detection method of coconut oil,the efficacy of coconut oil and the advancement of coconut resources.The objective of this review is to provide researchers with relevant information about coconut oil,aiming to foster the continued growth of the coconut oil industry. 展开更多
关键词 coconut oil visualized analysis research hotspots physiochemical properties nutrient composition
下载PDF
Flocculation of Kaolinite Suspensions in Water by Coconut Cream Casein 被引量:1
14
作者 Jacques K. Fatombi Jean-Aimé Mbey +4 位作者 Taofiki Aminou Bruno Lartiges Nikita Topanou Odile Barres Roger G. Josse 《Journal of Water Resource and Protection》 2011年第12期918-924,共7页
The flocculation of kaolinite colloidal particles was carried out at pH = 6 in suspension of initial turbidity varying between 24 NTU and 102 NTU by a casein extracted from Cocos nucifera cream. During Jar-test essays... The flocculation of kaolinite colloidal particles was carried out at pH = 6 in suspension of initial turbidity varying between 24 NTU and 102 NTU by a casein extracted from Cocos nucifera cream. During Jar-test essays, 90% to 99% of colloids were eliminated in the sediments. The optimal doses of casein used depend on the initial colloids concentrations of the suspension and were found to be 60 mg/L and 100 mg/L respectively for suspensions having turbidity of 24 NTU and 102 NTU. The corresponding residual turbidity are respectively 2.80 NTU and 10.22 NTU for clarified water. The structural analysis of the freeze-dried sediments by FTIR shows sharp adsorption bands at 1558 cm–1 and 1653 cm–1, indicating the presence of casein in the sediment. The flocculation process between the particles of kaolinite and the coconut casein is adsorption and bridging. 展开更多
关键词 FLOCCULATION coconut CASEIN KAOLINITE TURBIDITY
下载PDF
人因可靠性评价的改进加权BN-CREAM模型
15
作者 马彦辉 左凯瑛 +1 位作者 王颖 王志琼 《工业工程》 北大核心 2023年第6期83-92,共10页
传统认知可靠性与失误分析方法 (cognitive reliability and error analysis method,CREAM)存在诸多缺陷,导致适用面较窄,但仍具有较大的开发潜力。为提高方法评价的精度和扩展其适用性,提出一种改进加权的贝叶斯网络(Bayesian network,... 传统认知可靠性与失误分析方法 (cognitive reliability and error analysis method,CREAM)存在诸多缺陷,导致适用面较窄,但仍具有较大的开发潜力。为提高方法评价的精度和扩展其适用性,提出一种改进加权的贝叶斯网络(Bayesian network,BN)与CREAM方法相结合的模型。该模型首先使用灰色关联法与决策实验室分析法获取在场景下因子的权重,再利用贝叶斯网络推理得到调整后的共同绩效条件因子节点概率分布;然后将加权后的因子进行抽样仿真,得到在该场景下人所处控制模式的概率分布。选用1 800 W定制种子电源的案例,通过分析评估结果,再对比其他方法,验证了模型的有效性和可行性。改进后模型的适用性更广,输出结果更客观,为人因可靠性评价指标体系的构建提供参考。 展开更多
关键词 人因可靠性评价 认知可靠性与失误分析方法(cream) 灰色-决策与实验室法 贝叶斯网络
下载PDF
N-Doped rGO-Like Carbon Prepared from Coconut Shell:Structure and Specific Capacitance 被引量:1
16
作者 Imam Khambali Budhi Priyanto +8 位作者 Retno Asih Malik Anjelh Baqiya Muhammad Mahyiddin Ramli Nurul Huda Osman Sarayut Tunmee Hideki Nakajima Triwikantoro Mochamad Zainuri Darminto 《Journal of Renewable Materials》 SCIE EI 2023年第4期1823-1833,共11页
An rGO−like carbon compound has been synthesized from biomass,i.e.,old coconut shell,by a carbonization process followed by heating at 400°C for 5 h.The nitrogen doping was achieved by adding the urea(CH4N2O)and ... An rGO−like carbon compound has been synthesized from biomass,i.e.,old coconut shell,by a carbonization process followed by heating at 400°C for 5 h.The nitrogen doping was achieved by adding the urea(CH4N2O)and stirring at 70°C for 14 h.The morphology and structure of the rGO-like carbon were investigated by electron microscopies and Raman spectroscopy.The presence of C-N functional groups was analyzed by Fourier transform infrared and synchrotron X-ray photoemission spectroscopy,while the particle and the specific capacitance were measured by particle sizer and cyclic voltammetry.The highest specific capacitance of 72.78 F/g is achieved by the sample with 20%urea,having the smallest particles size and the largest surface area.The corresponding sample has shown to be constituted by the appropriate amount of C–N pyrrolic and pyridinic defects. 展开更多
关键词 N-DOPED rGO−like carbon coconut shell specific capacitance
下载PDF
基于CREAM的管线打开作业人因失误事故研究 被引量:1
17
作者 王冬冬 王登辉 李慕晨 《安全》 2023年第7期15-22,共8页
为提升管线打开作业的人因可靠性,深入探讨管线打开作业人因失误事故发生的根原因,基于认知可靠性和失误分析方法(CREAM),建立了管线打开作业人因失误模型,将失误模式划分为疏忽、擅自、错误、违反,建立了涵盖环境、人、信息、组织、危... 为提升管线打开作业的人因可靠性,深入探讨管线打开作业人因失误事故发生的根原因,基于认知可靠性和失误分析方法(CREAM),建立了管线打开作业人因失误模型,将失误模式划分为疏忽、擅自、错误、违反,建立了涵盖环境、人、信息、组织、危险源、技术6个方面的前因分类表和后果—前因追溯表,追溯分析人因失误的根原因,并运用扩展法对人因失误的发生概率进行定量预测。将模型应用于管线打开作业人因失误事故实例分析,结果显示:追溯到事故发生的根原因与员工个性缺陷、管理问题、安全意识欠缺等方面相关;获得3个人因失误事件的人因失误概率值分别为0.006、0.04、0.006;并提出了有针对性的建议、措施。 展开更多
关键词 管线打开作业 认知可靠性和失误分析方法(cream) 追溯分析 人因失误
下载PDF
Effects of Incorporating Coconut Cake or Palm Kernel Cake in Piglet Fattening
18
作者 Ouattara Howélé Ouattara Bazoumana +1 位作者 Kamagaté Soualio Kati-Coulibaly Séraphin 《Open Journal of Animal Sciences》 CAS 2023年第1期137-150,共14页
In C&#244te d’Ivoire, coconut and palm cultivation are very developed. Industrial utilization of these crops fruits is generated some under products that can be used in breeding. The aim of this study was to test... In C&#244te d’Ivoire, coconut and palm cultivation are very developed. Industrial utilization of these crops fruits is generated some under products that can be used in breeding. The aim of this study was to test the potentialities in the breeding of cattle-cake of coconut and cattle-cake of palm kernel when they are incorporated in diets of piglet fattening. 18 piglets teamed up into three homogenous groups (three males castrate and three females) were used. The control group was fed a diet made with 55% of maize + 10% of bran maize + 25% fish powder + 4% of ash + 3% of salt. The test 1 group called diet ESSAI 1 was fed a mixture of 70% of the control diet and 30% of cattle-cake of coconut. The test 2 group called diet ESSAI 2 was fed with a mixture of 70% of the control diet and 30% of cattle-cake of palm kernel. The analysis made showed that the two cattle-cake are nutritiously rich and their incorporation in diets at degree of 30% of the total diet induced growth performance similar to that obtained with the control diet. Animals of each group were in good health and diets EASSAI 1 and ESSAI 2 were cheaper than the control diet. Then, cattle-cake of coconut and cattle-cake of palm kernel can be recommended as part of the diet of piglet (about 30%) in order to enhance profit with the same growth performance. 展开更多
关键词 Diet Cattle-Cake coconut Kernel Palm PIGLET
下载PDF
改进贝叶斯网络模型在起重作业人机交互差错风险分析中的应用 被引量:1
19
作者 晋良海 闫月蓉 +3 位作者 陈颖 邵波 陈述 陈云 《安全与环境学报》 CAS CSCD 北大核心 2024年第1期213-220,共8页
为量化分析起重作业人机交互差错风险,根据安全工效学原理及安全技术规范将起重作业人、机、环相关影响因素作为根节点,按照事故致因层次关联关系确定子节点,构建起重作业人机交互差错的3层级贝叶斯网络模型(Bayesian Network, BN);基... 为量化分析起重作业人机交互差错风险,根据安全工效学原理及安全技术规范将起重作业人、机、环相关影响因素作为根节点,按照事故致因层次关联关系确定子节点,构建起重作业人机交互差错的3层级贝叶斯网络模型(Bayesian Network, BN);基于模糊集理论,采用认知可靠性与失误分析方法(Cognitive Reliability and Error Analysis Method, CREAM),厘定贝叶斯网络父节点失效概率以及中间节点条件概率;利用逆向推理仿真技术分析起重作业人机交互差错发生的因果链,探究起重伤害事故发生的人机交互差错风险。结果表明:起重作业人机交互差错最可能致因链为起重设备安全检查不到位→管理人员失误→人员操作失误→起重伤害事故发生;单因素失效条件下,起重作业人机交互差错风险概率呈线性增长趋势;在多因素失效条件下,一级节点因素失效概率愈大则人机交互差错效应愈显著,且呈现非线性增长态势。 展开更多
关键词 安全工程 起重作业 人机交互差错 贝叶斯网络(BN) 认知可靠性与失误分析方法(cream)
下载PDF
Textural and functional analysis of sorghum flour cookies as ice cream inclusions
20
作者 J.S.Myers Scott R.Bean +2 位作者 F.M.Aramouni X.Wu K.A.Schmidt 《Grain & Oil Science and Technology》 CAS 2023年第2期100-111,共12页
Flour serves as one of the primary ingredients of cookies,which affects dough properties,physical changes during baking,and post-baking cookie properties.Two gluten-free cookie formulations were developed with the goa... Flour serves as one of the primary ingredients of cookies,which affects dough properties,physical changes during baking,and post-baking cookie properties.Two gluten-free cookie formulations were developed with the goal of use as inclusions in frozen desserts.Blonde and chocolate cookies were made with sorghum flour or all-purpose wheat flour and then evaluated for physical and chemical properties.To determine functionality in a frozen state,texture analysis was conducted on cookies at−30℃,−17°C,and 20℃,replicating various ice cream storage temperatures.To simulate the process effect of incorporating the product into a frozen dessert,cookies were crumbled mechanically,and the crumbles were separated based on size.When evaluating cookies,no significant differences(P<0.05)were observed in width(W),thickness(T),spread,and W/T ratio for flour source within formula.Blonde cookies had lower moisture contents than chocolate cookies;further,blonde cookies made from sorghum flour had less moisture than those made with wheat flour.As the cookie temperature decreased from 20℃to−17℃,cookie hardness increased,with flour type having no effect.Within formula,cookies had similar instrumental color parameters.However,blonde cookies made from sorghum flour produced more smaller-sized pieces than those made from wheat flour.The results of this study demonstrate that sorghum flour cookies have desirable properties for use as inclusions in ice cream and other frozen desserts. 展开更多
关键词 COOKIE SORGHUM Inclusion GLUTEN-FREE Ice cream
下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部