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1母乳喂养自信心量表在护理实践中的应用显示文摘目的 :引入并修订母乳喂养自信心量表 ,探讨影响母乳喂养自信心的主要因素 ,为卫生保健人员评估产妇的母乳喂养自信心水平提供有力工具。方法 :对原量表进行翻译、专家评审、预试验和试验 ,以确定信度、效度均满意的修订量表。根据班杜拉自信心理论框架自行设计调查问卷 ,对 186名产妇进行调查。结果 :母乳喂养自信心量表的信度系数为 0 .93,分半信度系数 0 .91。因子分析结果表明量表的结构与理论结构基本符合 ,量表得分与产后 1月、2月婴儿喂养方式的显著相关性表明预测效度也较满意。结论 :影响母乳喂养自信心的主要因素包括喂奶时的精神紧张程度 ;有经验的朋友对产妇哺乳技巧的评价 ;文化程度 ;母亲 (婆婆 )是否对产妇提供过母乳喂养相关知识。戴晓娜 Cindy-Lee Dennis 陈叙 徐玲 李涛 张莉 李彬 路光升 2004中华护理杂志2004,39,6:179
2龙门山冲断带的隆升和川西前陆盆地的沉降显示文摘通过龙门山地区和川西前陆盆地岩石样品的裂变径迹和镜质体反射率的测定和计算机模拟得出:(1)松潘-甘孜褶皱带10Ma以来至少隆升了3—4km,隆升速率最低为0.3—0.4mm/a;(2)龙门山逆冲推覆构造带10Ma以来至少隆升了5—6km,隆升速率最低为0.5—0.6mm/a;(3)龙门山滑脱拆离带60Ma以来隆升1—2km,隆升速率为0.016—0.032mm/a;(4)川西前陆盆地60Ma以来隆升了1.7—3km,隆升速率为0.028—0.05mm/a;(5)10Ma以来北川—映秀—小关子断裂西侧的隆升速率是其东侧隆升速率的40倍;(6)60Ma以前松潘—甘孜褶皱带的隆升与川西前陆盆地的沉降曲线呈镜象关系,即松潘—甘孜褶皱带隆升较快时,盆地沉降也较快。60Ma以来,川西前陆盆地也以隆升为主,但松潘—甘孜褶皱带的隆升速率要大得多;(7)川西前陆盆地的古地温梯度为25℃/km。刘树根 罗志立 戴苏兰 Dennis Arne C.J.L.Wilson 1995地质学报1995,69,3:163
3A review on the generation, determination and mitigation of Urban Heat Island显示文摘当在第 21 世纪的主要问题之一由于人的文明的都市化和工业化摆姿势到人,城市的热岛(UHI ) 被考虑。当他们消费,从城市的结构产生的大量热并且重新散发太阳辐射,并且从人为的热,来源是 UHI 的主要原因。二热来源作为与它的环境相比增加一个城市的区域的温度,它作为城市的热岛紧张(UHII ) 被知道。这个问题与大人口和广泛的经济活动在城市或宗主国里是甚至更坏的。30 亿个人在世界上住在估计城市的区域直接暴露于这个问题,它在不久的将来将显著地被增加。由于这个问题的严厉,广阔研究努力被奉献了,大量文学为这个题目是可得到的。在这个区域可得到的文学包括最近的研究途径,概念,方法论,最近的调查工具和缓解措施。这研究被执行通过 UHI 的最重要的特征的调查考察并且总结这个研究区域。热由应该被调查在的最重要的角色详细说明学习特别的城市的加热的城市的结构戏重新散发,这被结束 UHI。未来研究应该为减少城市的热岛的效果并且最终住在更好的环境集中于设计和计划参数,这也被结束。RIZWAN Ahmed Memon DENNIS Y.C. Leung LIU Chunho 2008Journal of Environmental Sciences2008,20,1:116
4龙门山造山带-川西前陆盆地系统构造事件研究显示文摘通过对构造事件形成的产物 (岩浆岩、各种矿物等 )进行氩 -氩年龄测定、裂变径迹年龄测定、ESR年龄测定和计算机模拟 ,得出龙门山造山带 -川西前陆盆地系统自印支期以来 ,共发生了 7次构造事件 :(1)卡尼期末的构造事件 (D1 ) ,形成 S1 和 F1 ,并有区域低温动热变质作用 ;(2 )诺利期末的构造事件 (安县运动 ,D2 ) ,产生川西前陆盆地上三叠统须四段与下伏地层不整合接触和须四段砾岩的分布 ,并有较强的岩浆作用 ;(3)燕山期 (12 0~ 130 Ma,D3) ,有较强的岩浆作用和变质作用 ;(4 )喜马拉雅期 6 0 Ma左右的构造事件 (D4) ;(5 )喜马拉雅期 30~ 40Ma的构造事件 (D5 ) ;(6 )喜马拉雅期 2 0~ 2 5 Ma的构造事件 (D6 ) ;(7)喜马拉雅期 10 Ma的构造事件 (D7)。后 4次构造事件使龙门山造山带刘树根 赵锡奎 罗志立 徐国盛 王国芝 C.J.L.Wilson Dennis Arne 2001成都理工学院学报2001,28,3:99
5河西地区可持续发展能力评价及地域分异规律显示文摘采用熵技术支持下的层次分析模型和多层次多目标模糊综合测度模型求算出河西地区的可持续发展能力 ,进而总结出可持续发展能力的地域分异规律。认为区内各县市可持续发展能力差异较大 ,但其地域分异呈现出某种规律性 :流域上游地区的可持续发展能力高于流域中下游地区 ,呈现出从上游到下游逐步递减的规律 ;工矿区可持续发展能力高于农区 ,呈现出从矿区到农区逐步递减的规律 ;牧区的可持续发展能力高于农区 ,呈现出从牧区到农区逐步递减的规律 ;城区的可持续发展能力高于农区 ,呈现出从城区到农区逐步递减的规律 ;少数民族地区的可持续发展能力高于汉族地区 ,呈现出从少数民族地区到汉族地区逐步递减的规律。这种分异规律可为河西地区新世纪生态环境建设和经济社会可持续发展提供定量化的科学决策依据。方创琳 Yehua Dennis Wei 2001地理学报2001,56,5:95
6鼎湖山针阔叶混交林优势种树干液流特征及其与环境因子的关系显示文摘运用Granier热扩散式探针法,于2010年干湿季对鼎湖山自然保护区针阔混交林4种优势树种马尾松、锥栗、木荷和广东润楠的树干液流密度进行连续监测,并同步观测气温、相对湿度和光合有效辐射等环境因子的变化,研究其树干液流特征及其对环境因子的响应.结果表明:在干湿季,4种优势树种的树干液流速率日变化均呈'昼高夜低'的典型单峰曲线,阔叶树锥栗、木荷和广东润楠的平均液流速率和峰值以及日液流量均显著大于针叶树马尾松;马尾松、锥栗、木荷和广东润楠的最大树干液流密度分别为29.48、38.54、51.67、58.32gH2O.m-2.s-1.优势树种树干液流速率的变化与环境因子的昼夜变化存在时滞;液流速率变化与光合有效辐射、水汽压亏缺和气温等环境因子的变化呈显著正相关,其中湿季以光合有效辐射为主导因子,干季以气温为主导因子.黄德卫 张德强 周国逸 刘世忠 Otieno Dennis 李跃林 2012应用生态学报2012,23,5:46
7Spatiotemporal dynamics of carbon intensity from energy consumption in China显示文摘持续发展被全球气候变化严重由于碳排出物质问了。作为一个发展中的乡村,中国答应了在 2020 在在它的碳紧张上的一年 2005 的水平下面减少 40%-45% 。这个目标的实现在精力在省的规模节省和排出物减小的国家规模,而且行动和份额取决于社会和经济的不仅真实转变。基于 IPCC 提供的方法,这份报纸在 19972010 从精力消费检验空间与时间的动力学和瓷器碳紧张的统治因素。目的是为政策在中国在精力保存和碳排放减小上做提供科学基础。结果如下被显示出。第一,瓷器碳排出物从 1997 ~ 2010 从 4.16 Gt 增加了到 11.29 Gt,与 7.15% 的年度生长率,它比 GDP (11.72%) 的低得多。第二,那瓷器碳紧张有一变得空间的我显示了的 Morans 的趋势在省的规模的凝块。有高或低的价值的省看起来是路径依赖者或对某程度锁空间。第三根据空间面板 econometric 模型的意见,精力紧张,精力结构,工业结构和都市化率是从精力塑造瓷器碳紧张的空间与时间的模式的统治因素消费。因此,以便实现精力保存和排放减小的目标,中国应该改进精力利用的效率,优化精力和工业结构,选择低碳的都市化途径并且实现精力的地区性的合作策略保存和排出物减小。CHENG Yeqing WANG Zheye YE Xinyue WEI Yehua Dennis 2014Journal of Geographical Sciences2014,24,4:40
8Land use change and carbon cycle in arid and semi-arid lands of East and Central Asia显示文摘Dramatic changes in land use have occurred in arid and semi-arid landsof Asia during the 20th century. Grassland conversion into croplands and ecosystem degradation is widespread due to the high growth rate of human population and political reforms of pastoral systems. Rangeland degradation made many parts of this region vulnerable to environmental and political changes. The collapse of the livestock sector in some states of central Asia, expansion of livestock inChina and intensive degradation of grasslands in China are examples of the responses of pastoral systems to these changes over the past decades. Carbon dynamics in this region is highly variable in space and time. Land use/cover changes with widespread reduction of forest and grasslands increased carbon emission from the region.Togtohyn Chuluun Dennis Ojima 2002Science China(Life Sciences)2002,45,z1:34
9小花棘豆(Oxytropis glabra DC.)内生真菌的培养与鉴定显示文摘小花棘豆(Oxytropis glabra DC.)是内蒙古草原上的重要毒草,实验结合微生物学和分子生物学手段进行了其内生真菌研究。结果表明:体外培养的小花棘豆内生真菌生长缓慢,呈圆形、隆起、边缘整齐、辐射状生长的白色菌落,后菌体分泌黑褐色的色素物质,分生孢子近圆柱形,有粗且比孢子壁厚的暗色横隔膜,隔膜数1-5个。10个菌株的5.8S rDNA/ITS序列与内生真菌Embellisia sp.L12株的序列高度相似。推测该内生真菌属于Embellisia。卢萍 Dennis Child 赵萌莉 Dale R Gardener 吕桂芬 韩国栋 2009生态学报2009,29,1:29
10Expression, Imprinting, and Evolution of Rice Homologs of the Polycomb Group Genes显示文摘Polycomb 组蛋白质(PcG ) 在基因表示的 epigenetic 规定起重要作用。一些核心 PcG 蛋白质例如 Zeste (E (z)) 的 Enhancer, Zeste (12 ) 的 Suppressor (苏(z) 12 ) ,并且额外的性梳子(转换字符) ,在植物被保存。米饭染色体包含象基因, OsiEZ1 和 OsCLF 一样的二 E (z) ,苏(z) 的二个相当或相同的事物 12, OsEMF2a 和 OsEMF2b,和二像转换字符的基因, OsFIE1 和 OsFIE2。OsFIE1 仅仅在内乳被表示;当父亲的拷贝不是活跃的时,母亲的拷贝被表示。另外的米饭 PcG 基因在大量纸巾被表示并且没在内乳被印。象基因一样的二 E (z) 看起来以前复制了 dicots 和 monocots 的分离;12 可能在 Gramineae 和二像转换字符的基因的进化期间复制了的苏(z) 的二个相当或相同的事物是可能的在草的祖先复制了。Arabidopsis 表示种子的 PcG 基因 MEA 和 FIS2 的相当或相同的事物都没在米饭染色体被识别。我们在三 PcG 基因的米饭相当或相同的事物孤立 T-DNA 插入线。在这些 T-DNA 插入线没有自治内乳发展。有在 OsEMF2b 的 T-DNA 插入的一根线包括改变的 flowering 时间和反常的花机关显示多种的显型,建议在为这基因的米饭开发的重要角色。Ming Luo Damien Platten Abed Chaudhury W.J. Peacock Elizabeth S. Dennis 2009Molecular Plant2009,2,4:25
11独生与非独生儿童的行为发展研究:六年追踪报告显示文摘为明了独生子女与非独生子女的行为发展是否有差异,针对198.1~85年在南京地区所调查的3~6岁儿童,分别于1988~89年及1990~91年作第四年与第六年的追踪调查,研究这些儿童在各个发展阶段中有何过程上的变化。两次追踪调查时,被调查儿童总数分别是422及416名,其年龄分布大至分别为7~10岁及9~12岁。按Achenbach儿童行为量表评走所示,独生与非独生子女各有不同的行为表现,且其行为发展上的差异又随性别而略有所别。陶国泰 邱景华 李宝林 曾文星 徐静 Dennis Mclaughblin 1996中国心理卫生杂志1996,10,1:24
12Pancreatic insulinoma:current issues and trends显示文摘BACKGROUND:Although insulinomas are very rare tumors, they are the most common pancreatic neuroendocrine neoplasms.The incidence in general population is 1-4 per 1 000 000 yearly but the incidence is higher in autopsy studies. The malignancy of insulinomas is difficult to be predicted on the basis of their histological features,and the current WHO classification has been re-evaluated.This review aimed to summarize classical knowledge with current trends in the diagnosis and treatment of insulinomas. DATA SOURCES:A Medline search using terms'insulinoma', 'treatment'and'neuroendocrine tumors'was conducted. Additional references were sourced from key articles. RESULTS:Surgery is the treatment of choice for insulinoma and has an extremely high success rate.Medical treatment is also available but only for patients who are unable or unwilling to undergo surgical treatment.Preoperative localization is necessary for planning the surgical approach.Many methods exist for localization of an insulinoma and can be invasive and non-invasive.The combination of biphasic thin section helical CT and endoscopic ultrasonography(EUS)has an almost 100% sensitivity in localizing insulinomas.Laparoscopic ultrasound is mandatory to localize intraoperatively these tumors.EUS-guided fine needle tattoing is an alternative method of localization in case of lack of laparoscopic ultrasound. CONCLUSION:Laparoscopic resection for benign insulinomas is the procedure of choice,whereas pancreatectomy is reserved for large,potentially malignant tumors.Dennis Vaidakis John Karoubalis Theodora Pappa George Piaditis George N Zografos 2010Hepatobiliary & Pancreatic Diseases International2010,9,3:22
13锡林河流域放牧条件下草原CH_4通量研究结果初报显示文摘采用静态箱法 ,于 1998年 7月至 2 0 0 0年 2月对放牧条件下锡林河流域冷蒿 (Artemisia frigida) -小禾草草原甲烷地 -气交换通量进行了野外原位测定。研究结果表明 :锡林河流域草原是甲烷的弱汇 ,其吸收通量变幅较大 ,在0~ 499.6 8μg.m- 2 .h- 1之间 ,且具有明显的季节变化特征 ,表现为甲烷通量随温度的降低而逐渐降低。分析揭示了甲烷通量与温度和降水之间的关系 ,尤其是与地温之间的定量关系。两年的研究结果还表明 ,不同放牧率处理在一定的时间尺度上对土壤 -植被系统吸收甲烷没有显著影响。王艳芬 纪宝明 陈佐忠 Dennis Ojima 2000植物生态学报2000,24,6:23
14塔里木河中游胡杨与灰叶胡杨气体交换特性对比研究显示文摘在自然条件下利用Li-6400光合作用系统对塔里木河中游地区的天然胡杨、灰叶胡杨净光合速率(Pn)、气孔导度(Gs)、胞间CO2浓度(Ci)、蒸腾速率(Tr)和水分利用效率(WUE)等生理指标进行测定分析,探讨它们对外界干旱环境适应的生理特性,为进一步研究胡杨、灰叶胡杨的光合水分生理特性,以及保护恢复塔里木河流域的天然胡杨林提供依据。结果表明:(1)在整个光合日变化进程中,胡杨的日平均Pn、Gs、Tr以及WUE均高于灰叶胡杨。(2)胡杨和灰叶胡杨的净光合速率日变化均呈'双峰'曲线并存在光合'休眠'现象。(3)胡杨、灰叶胡杨在正午时分出现的Pn下降主要是受到气孔限制的影响既气孔限制值增大、胞间CO2浓度减小;傍晚时分出现的光合速率下降主要是因受到外界光照强度减弱,既受非气孔限制影响较大。(4)决定胡杨和灰叶胡杨Pn日变化的环境因子作用大小均为:光量子通量密度(PPFD)>气孔导度(Gs)>空气相对湿度(RH)>气温(Tair);决定胡杨与灰叶胡杨Tr日变化的环境因子作用大小顺序分别为:气温(Tair)>光量子通量密度(PPFD)>气孔导度(Gs)>空气相对湿度(RH)和光量子通量密度(PPFD)>气温(Tair)>气孔导度(Gs)>空气相对湿度(RH)。研究认为,胡杨与灰叶胡杨为适应干旱半干旱区的环境,在长期适应过程中形成了不同的生理生态对策,胡杨主要是通过调节Gs来有效控制蒸腾失水,提高WUE,进而适应干旱环境;灰叶胡杨主要是通过高蒸腾耗水,降低WUE来减少干旱环境对自身的伤害。张志刚 李宏 DENNY WALTHER 杨婵婵 郭光华 2012西北植物学报2012,32,12:19
15Therapeutic temperature modulation is associated with pulmonary complications in patients with severe traumatic brain injury显示文摘AIM: To examine complications associated with the use of therapeutic temperature modulation(mild hypothermia and normothermia) in patients with severe traumatic brain injury(TBI). METHODS: One hundred and fourteen charts were reviewed. Inclusion criteria were: severe TBI with Glasgow Coma Scale(GCS) < 9, intensive care unit(ICU) stay > 24 h and non-penetrating TBI. Patients were divided into two cohorts: the treatment group received therapeutic temperature modulation(TTM) with continuous surface cooling and indwelling bladder temperature probes. The control group received standard treatment with intermittent acetaminophen for fever. Information regarding complications during the time in the ICU was collected as follows: Pneumonia was identified using a combination of clinical and laboratory data. Pulmonary embolism, pneumothorax and deep venous thrombosis were identified based onimaging results. Cardiac arrhythmias and renal failure were extracted from the clinical documentation. acute respiratory distress syndrome and acute lung injury were determined based on chest imaging and arterial blood gas results. A logistic regression was conducted to predict hospital mortality and a multiple regression was used to assess number and type of clinical complications. RESULTS: One hundred and fourteen patients were included in the analysis(mean age = 41.4, SD = 19.1, 93 males), admitted to the Jackson Memorial Hospital Neuroscience ICU and Ryder Trauma Center(mean GCS = 4.67, range 3-9), were identified and included in the analysis. Method of injury included motor vehicle accident(n = 29), motor cycle crash(n = 220), blunt head trauma(n = 212), fall(n = 229), pedestrian hit by car(n = 216), and gunshot wound to the head(n = 27). Ethnicity was primarily Caucasian(n = 260), as well as Hispanic(n = 227) and African American(n = 223); four patients had unknown ethnicity. Patients received either TTM(43) or standard therapy(71). Within the TTM group eight patients were treated with normothermia after TBI and 35 patients were treated with hypothermia. A logistic regression predicting in hospital mortality with age, GCS, and TM demonstrated that GCS(Beta = 0.572, P < 0.01) and age(Beta =-0.029) but not temperature modulation(Beta = 0.797, ns) were significant predictors of in-hospital mortality [χ2(3) = 22.27, P < 0.01] A multiple regression predicting number of complications demonstrated that receiving TTM was the main contributor and was associated with a higher number of pulmonary complications(t =-3.425, P = 0.001). CONCLUSION: Exposure to TTM is associated with an increase in pulmonary complications. These findings support more attention to these complications in studies of TTM in TBI patients.Kristine H O’Phelan Amedeo Merenda Katherine G Denny Kassandra E Zaila Cynthia Gonzalez 2015World Journal of Critical Care Medicine2015,4,4:18
16糖尿病足的管理——选择最佳的模式显示文摘根据糖尿病足病病人危险程度管理和可以充分利用的卫生资源,组织一支包括糖尿病专科医生、护士、骨科、血管外科、足医等在内的多学科协作的防治队伍,对于防治糖尿病足和减少糖尿病截肢率是非常重要的。采用远程医疗会诊系统可以方便糖尿病足病人、节省医疗经费和提高工作效率,有利于发挥大医院的技术优势。建立足病防治网络,可以使整个区域内的足病工作人员规范化和标准化地工作,提高医疗水平和建立数据库。Dennis Yue 王玉珍 2004国外医学(内分泌学分册)2004,24,5:18
17The Ozone Component of Global Change:Potential Effects on Agricultural and Horticultural Plant Yield,Product Quality and Interactions with Invasive Species显示文摘The productivity,product quality and competitive ability of important agricultural and horticultural plants in many regions of the world may be adversely affected by current and anticipated concentrations of ground-level ozone(O3).Exposure to elevated O3 typically results in suppressed photosynthesis,accelerated senescence,decreased growth and lower yields.Various approaches used to evaluate O3 effects generally concur that current yield losses range from 5% to 15% among sensitive plants.There is,how-ever,considerable genetic variability in plant responses to O3.To illustrate this,we show that ambient O3 concentrations in the eastern United States cause substantially different levels of damage to otherwise similar snap bean cultivars.Largely undesirable effects of O3 can also occur in seed and fruit chemistry as well as in forage nutritive value,with consequences for animal production.Ozone may alter herbicide efficacy and foster estab-lishment of some invasive species.We conclude that current and projected levels of O3 in many regions worldwide are toxic to sensitive plants of agricultural and horticultural significance.Plant breeding that incorporates O3 sensitivity into selection strategies will be increasingly necessary to achieve sustainable production with changing atmospheric composition,while reductions in O3 precursor emissions will likely benefit world food pro-duction and reduce atmospheric concentrations of an important greenhouse gas.Fitzgerald Booker Russell Muntifering Margaret McGrath Kent Burkey Dennis Decoteau Edwin Fiscus William Manning Sagar Krupa Arthur Chappelka David Grantz 2009Journal of Integrative Plant Biology2009,51,4:18
18Management of postoperative spinal infections显示文摘Postoperative surgical site infection(SSI) is a common complication after posterior lumbar spine surgery. This review details an approach to the prevention,diagnosis and treatment of SSIs. Factors contributing to the development of a SSI can be split into three categories:(1) microbiological factors;(2) factors related to the patient and their spinal pathology; and(3) factors relating to the surgical procedure. SSI is most commonly caused by Staphylococcus aureus. The virulence of the organism causing the SSI can affect its presentation. SSI can be prevented by careful adherence to aseptic technique,prophylactic antibiotics,avoiding myonecrosis by frequently releasing retractors and preoperatively optimizing modifiable patient factors. Increasing pain is commonly the only symptom of a SSI and can lead to a delay in diagnosis. C-reactive protein and magnetic resonance imaging can help establish the diagnosis. Treatment requires acquiring intra-operative cultures to guide future antibiotic therapy and surgical debridement of all necrotic tissue. A SSI can usually be adequately treated without removing spinalinstrumentation. A multidisciplinary approach to SSIs is important. It is useful to involve an infectious disease specialist and use minimum serial bactericidal titers to enhance the effectiveness of antibiotic therapy. A plastic surgeon should also be involved in those cases of severe infection that require repeat debridement and delayed closure.Vishal Hegde Dennis S Meredith Christopher K Kepler Russel C Huang 2012World Journal of Orthopedics2012,3,11:17
19Robotic surgery for rectal cancer: A systematic review of current practice显示文摘AIM: To give a comprehensive review of current litera-ture on robotic rectal cancer surgery.METHODS: A systematic review of current literature via PubMed and Embase search engines was per-formed to identify relevant articles from january 2007 to november 2013. The keywords used were: 'robotic surgery', 'surgical robotics', 'laparoscopic computer-assisted surgery', 'colectomy' and 'rectal resection'. RESULTS: After the initial screen of 380 articles, 20 pa-pers were selected for review. A total of 1062 patients(male 64.0%) with a mean age of 61.1 years and body mass index of 24.9 kg/m2 were included in the review.Out of 1062 robotic-assisted operations, 831(78.2%) anterior and low anterior resections, 132(12.4%) in-tersphincteric resection with coloanal anastomosis, 98(9.3%) abdominoperineal resections and 1(0.1%) Hart-mann's operation were included in the review. Robotic rectal surgery was associated with longer operative time but with comparable oncological results and anastomotic leak rate when compared with laparoscopic rectal surgery. CONCLUSION: Robotic colorectal surgery has con-tinued to evolve to its current state with promising re-sults; feasible surgical option with low conversion rate and comparable short-term oncological results. The challenges faced with robotic surgery are for more high quality studies to justify its cost.Tony Wing Chung Mak Janet Fung Yee Lee Kaori Futaba Sophie Sok Fei Hon Dennis Kwok Yu Ngo Simon Siu Man Ng 2014World Journal of Gastrointestinal Oncology2014,6,6:16
20基于人工神经网络的注水开发油藏产量预测显示文摘针对传统注水开发油藏产量预测方法存在的问题,提出了基于人工神经网络的预测模型,阐述了模拟工作流程,并进行了算例分析。提出了基于流体物理学和测量数据随机组合的特征提取方法,以提高模型的预测效果。优选贝叶斯正则化算法作为模型的训练算法,该算法一般耗时较长,但能对产油量、产气量、产水量等嘈杂数据集进行良好泛化。通过计算均方误差及决定系数、绘制误差分布直方图及模拟数据-验证数据交会图等方式进行模型评价。用90%的历史数据训练、验证、测试目标模型结构,然后用其余10%数据进行盲测。研究表明,提出的流体产量预测模型决定系数超过0.9,模拟结果与实际数据吻合程度高,输入信息少,计算成本低。NEGASH Berihun Mamo YAW Atta Dennis 2020石油勘探与开发2020,47,2:15
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