检索结果-南通市图书馆

Thinking Probabilistically Revisited

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Business Review 2022年第1期21卷 1-4页

作者： Warren richard hughes University of Waikato HamiltonNew Zealand

Probability distributions are derived for real-world situations where the environment may be subject to high volatility involving radical revisions in probability judgments.A simple procedure is outlined deriving an initial probability distribution which may then be adjusted to reflect additional or new *** trade-off between minimal computation and maximum information is examined.

关键词： probability assessment pairwise judgments reciprocal matrices eigenvalues geometric means

A Study of Fluid Flow in Sediments and the Effect of Tidal Pumping

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Earth Science 2017年第5期28卷 842-847页

作者： Paulo Waltrich John Whitehead richard hughes Karsten Thompson Department of Petroleum Engineering Louisiana State University

Offshore drilling and production operations can result in spills or leaks of hydrocarbons into seabed sediments, which can potentially contaminate these sediments with oil. If this oil later mi- grates to the water surface it has the potential for negative environmental impacts. For proper contin- gency planning and to avoid larger consequences in the environment, it is essential to understand me- chanisms and rates for hydrocarbon migration from oil containing sediments to the water surface as well as how much will remain trapped in the sediments. It is believed that the amount of oil transported out of the sediment can be affected by tidal pumping, a common form of subterranean groundwater dis- charge （SGD）. However, we could find no study experimentally investigating the phenomenon of fluid flow in subsea sediments containing oil and the effects of tidal pumping. This study presents an experi- mental investigation of tidal pumping to determine if it is a possible mechanism that may contribute to the appearance of an oil sheen on the ocean surface above a sediment bed containing oil. An experimen- tal apparatus was constructed of clear PVC pipe allowing for oil migration to be monitored as it flowed out of a sand pack containing oil, while tidal pressure oscillations were applied in three different man- ners. The effect of tidal pumping was simulated via compression of air above the water （which simulated the increasing static head from tidal exchange）. Experimental results show that sustained oil release oc- curred from all tests, and tests with oscillating pressure produced for longer periods of time. Further- more, the experimental results showed that the oil migration rate was affected by grain size, oil satura- tion, and oscillation wave type. In all oscillating experiments the rate and ultimate recovery was less than the comparable static experiments. For the conditions studied, the experimental results indicate that with an oscillating pressure on top of a

关键词： tidal pumping oil migration sediments oil release rate.

Thinking Probabilistically

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Chinese Business Review 2021年第5期20卷 164-167页

作者： Warren richard hughes Department of Economics University of WaikatoHamiltonNew Zealand

Probability distributions are derived for real-world situations involving hard-to-quantify outcomes unlike drug trials for *** may involve levels of satisfaction,risk,inflation,etc.,that show extreme volatility over time requiring frequent *** judgments by the decision-maker form the basis for the simple calculations that could replace traditional revision of prior distributions.

关键词： probability assessment Bayesian revision pairwise judgments reciprocal matrices

Assessing Probabilities for Events Pertaining to Buy/Sell and Similar Decisions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Business Review 2017年第5期16卷 245-249页

作者： Warren richard hughes The University of Waikato Hamilton New Zealand

Probability Assessment

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Management Studies 2022年第5期10卷 331-334页

作者： Warren richard hughes Department of Economics University of WaikatoHamiltonNew Zealand

The methodology presented below can be viewed as a means of quantifying intuitions,guesses,hunches etc.,about relative likelihoods for alternative events leading to a“ballpark”probability *** intuitions etc.,will lead to different“ballpark”distributions.A final distribution can then be formulated by the decision-maker using other information as in minimum or maximum collective probabilities for groups of events or similar *** judgments may be idiosyncratic to the decision-maker and not easily replicable in an algorithm.

关键词： probability assessment pairwise judgments spreadsheets minimal calculation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

对数视频放大器

国外红外与激光技术 1977年第Z2期 65-111页

作者： richard S.hughes

前言许多电量的测量必须在很宽的动态范围中进行。对雷达接收机、遥测装置和通讯接收机的输入信号在短时间间隔内常常从几微伏改变到几伏。激光测距仪的返回脉冲可能变化若干数量级,这要看目标的瞬时几何形状而定。就上述要求来说,瞬时... 详细信息

前言许多电量的测量必须在很宽的动态范围中进行。对雷达接收机、遥测装置和通讯接收机的输入信号在短时间间隔内常常从几微伏改变到几伏。激光测距仪的返回脉冲可能变化若干数量级,这要看目标的瞬时几何形状而定。就上述要求来说,瞬时动态范围的限制因素常常是线性接收放大器。

关键词：对数放大器动态范围线性放大器对数转换线性增益代入对数变换方程

Evaluation of utility in shoulder pathology:Correlating the American Shoulder and Elbow Surgeons and Constant scores to the EuroQoL

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

World Journal of Orthopedics 2012年第3期3卷 20-24页

作者： Blaine T Bafus richard E hughes Bruce S Miller James E Carpenter Department of Orthopaedic Surgery Cleveland Clinic Foundation Cleveland OH 44115-2325 United States Department of Orthopaedic Surgery University of Michigan Ann Arbor MI 48109-2200 United States

AIM: To study whether health utility scores can be derived from shoulder-specific ***: Authors investigated two questions:(1) do the American Shoulder and Elbow Surgeons(ASES) score and the Constant score correlate with the EuroQo L(EQ-5D), a measure of health utility?(2) can the ASES and Constant scores be obtained from a complete study sample without bias? Thirty subjects with various shoulder diagnoses completed ASES, Constant, and EQ-5D instruments. Pearson correlations were calculated to assess the associations between EQ-5D score and ASES and Constant ***: The correlation between EQ-5D score and ASES score was 0.60(P < 0.001); it was 0.54 for EQ-5D and Constant scores(P < 0.003). A multiple regression model containing ASES score, Constant score, age, and gender failed to adequately predict EQ-5D. Moreover, 25% of patients meeting the inclusion criteria did not complete the ASES questionnaire because they did not feel that specific questions, such as "do usual sport-list" and "throw ball overhand," applied to ***: Authors' results do not support the use of the ASES and Constant scores in predicting EuroQ ol health utility values. However, the Constant score was more suitable for this patient population because all patients were able to complete it.

关键词： Utility EuroQoL American Shoulder and Elbow Surgeons score Constant score Shoulder Outcomes

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

鉴定黄色蓝宝石的两种重要工艺

中国宝玉石 1988年第6期 52-54页

作者： richard W.hughes 石其光江西地质科学院

本文讨论了两种鉴定黄(或橙)色蓝宝石的新工艺: 1.在光源和浸没管之间放置蓝色滤光片,以提供天然和合成黄(橙)色蓝宝石中色带(直或弯)的必要对比依据。 2.斯里兰卡黄色至橙色蓝宝石的热处理鉴定,可以通过将原石置于高瓦数电灯泡下作褪... 详细信息

本文讨论了两种鉴定黄(或橙)色蓝宝石的新工艺: 1.在光源和浸没管之间放置蓝色滤光片,以提供天然和合成黄(橙)色蓝宝石中色带(直或弯)的必要对比依据。 2.斯里兰卡黄色至橙色蓝宝石的热处理鉴定,可以通过将原石置于高瓦数电灯泡下作褪色试验的方法来进行。随着对其缓缓加热,样品的颜色将会变得更深,褐色更浓,当其冷却至室温,颜色即恢夏正常。

关键词：褪色试验斯里兰卡滤光片

Assessing Probabilities of Unique Events: A New Approach

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Business Review 2019年第1期18卷 43-46页

作者： Warren richard hughes University of Waikato Hamilton New Zealand

Decision-makers in unique or one-off situations may have difficulties in framing the probabilities of possible events that are required in modern decision-making. This paper illustrates a new approach to probability determination based on pairwise primary judgments on the relative likelihoods of the possible events. Related “news” on the situation can also be used to update these prior probabilities using Bayesian Revision. Illustrative calculations outline the entire process through to determination of posterior probabilities following a “news” event.

关键词： Lehman failure probabilities odds Analytic Hierarchy Process (AHP) Bayesian Revision