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Availability of wind energy resource potential for power generation at Jos, Nigeria

O. O. Ajayi, R. O. Fagbenle, J. Katende, J. O. Okeniyi

Frontiers in Energy 2011, Volume 5, Issue 4, Pages 376-385 doi: 10.1007/s11708-011-0167-5

Abstract: The objective of this study was to assess the potential viability of the wind resource potential in Jos, Plateau state, Nigeria for power generation. The monthly mean wind speeds that span from 1987 to 2007 were employed to statistically analyze the monthly, annual and seasonal potentials of the wind energy resources at the site. Besides, the results were employed together with two models of wind energy conversion system to simulate the likely average output power. The outcome showed that Jos was suitable as a site for wind farm projects of varying sizes and that MW·h to GW·h of electricity is likely to be produced per period of months, seasons and years. The average wind speed range at the site was also estimated to be between 6.7 and 11.8 m/s across the months, years and seasons.

Keywords： green electricity renewable resources Weibull statistics Jos Nigeria

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The estimation for state of cable based on improved Weibull distribution model

Zhang Tieyan,Wang Chengmin,Sun Qiuye,Zhang Huaguang

Strategic Study of CAE 2008, Volume 10, Issue 10, Pages 42-46

Abstract: The famous methods for state estimation of cable are Weibull distribution model and Arrhenius method.And the Weibull distribution model is used for state estimation of cable.

Keywords： cable state estimation Arrhenius model Weibull distribution

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An Ameliorated Method of Simulation for theWeibull-distributed Clutter

Jiang Bin,He Xiang,Li Xiang,Wang Hongqiang,Guo Guirong

Strategic Study of CAE 2007, Volume 9, Issue 1, Pages 44-48

Abstract: the question that the realizable linear filter in physics is not considered in the simulation of the Weibull-distributedproposes the technique for the realizable filter in physics.Then the method of generation of random Weibull-distributed

Keywords： Weibull-distributed clutter ZMNL complex cepstrum realizable linear filter in physics simulation

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Weibull Shared Frailty Model Based on MCMC Method and Its Application in Reliability

Lin Jing,Han Yuqi,Zhu Huiming

Strategic Study of CAE 2006, Volume 8, Issue 2, Pages 55-60

Abstract: of the individuals obey the independent identically distribution, this paper constructs the Bayesian WeibullAs for the products whose lifetime distribution belongs to Weibull distribution, this paper brings forwardIt also gives out the parameters´ Bayesian estimation of the Weibull shared frailty model in the

Keywords： Bayesian analysis reliability MCMC simulation Gibbs sampling Weibull distribution shared frailty model

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Assessment of wind energy potential in Gaza Strip

Juma Yousuf ALAYDI

Frontiers in Energy 2011, Volume 5, Issue 3, Pages 297-304 doi: 10.1007/s11708-010-0134-6

Abstract: Furthermore, the values of the Weibull parameters and are determined from summary statistics of windConsequently, the wind power is estimated by adoption of the Weibull distribution expression.

Keywords： wind data wind resource assessment wind power density wind energy the Weibull distribution and Weibull

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An emerging market for groundwater remediation in China: Policies, statistics, and future outlook

Deyi Hou, Guanghe Li, Paul Nathanail

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 1, doi: 10.1007/s11783-018-1027-x

Abstract: There is a rapidly emerging and potentially huge market for the remediation of contaminated groundwater in China. The Chinese government published a Water Action Plan in April 2015, a Soil Action Plan in May 2016, and a draft Soil Pollution Prevention and Control Law in June 2017. All of these new policies and regulations put pressures on local governments and contaminated site owners, obliging them to conduct site investigation and to cleanup contaminated groundwater. The Chinese population in northern regions heavily depend on groundwater, with nearly 70% of water supply coming from aquifer sources in the Beijing-Tianjin-Hebei region. However, poor groundwater quality due to natural geochemical background and anthropogeic pollution is a serious concern, with poor or very poor quality water observed in nearly 80% of groundwater monitoring wells in 17 northern provinces. Shallow groundwater in many areas has been contaminated by toxic pollutants such as heavy metals and chlorinated organic compounds. There is an urgent need to better understand the situation and to conduct groundwater remediation at contaminated sites. The Chinese government is investing heavily in the research and development for groundwater remediation, which is expected to greatly add to the quality and quantity of groundwater remediation projects in the near future.

Keywords： Groundwater pollution Contaminated land Groundwater remediation Emerging market

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Anovel approach of noise statistics estimate using H∞ filter in target tracking

Xie WANG,Mei-qin LIU,Zhen FAN,Sen-lin ZHANG

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 5, Pages 449-457 doi: 10.1631/FITEE.1500262

Abstract: Noise statistics are essential for estimation performance.In practical situations, however, a priori information of noise statistics is often imperfect.Previous work on noise statistics identification in linear systems still requires initial prior knowledge

Keywords： Noise estimate H∞ filter Target tracking

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Performance Evaluation in Automatic Target Recognition Based on Fuzzy Comprehensive Evaluation and Statistics

Li Yanpeng,Li Xiang,Wang Hongqiang,Zhuang Zhaowen

Strategic Study of CAE 2005, Volume 7, Issue 3, Pages 64-68

Abstract: Recognition (ATR), the evaluation indexes and their measurement method are chosen with the application of statistics

Keywords： statistics fuzzy comprehensive evaluation automatic target recognition performance evaluation

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An investigation on patient dose in screen-film diagnostic radiology in Lhasa City, Xizang Autonomous Region, China

Xiang Du

Frontiers of Medicine 2013, Volume 7, Issue 4, Pages 506-509 doi: 10.1007/s11684-013-0294-y

Abstract:

This study aimed to investigate patient dose in diagnostic screen-film radiographic examinations in the city of Lhasa, China. Seven out of the twenty-six hospitals registered with the Lhasa Health Bureau were included in the investigation. The entrance surface air Kerma (ESAK) of seven conventional screen-film radiology X-ray equipment in these hospitals was measured with a QA dosimeter in September 2012. The X-ray examinations were divided into three categories: PA (posterior-anterior) chest, upper/lower limb, and AP (anterior-posterior) lumbar spine. For each category, ESAKs were calculated and analyzed. The mean ESAK was 0.6 mGy for PA chest, 0.3 mGy for upper/lower limb, and 1.8 mGy for AP lumbar spine. In addition, the mean ESAK value recorded for PA chest X-ray examinations exceeded the corresponding value recommended by the International Atomic Energy Agency (0.4 mGy).

Keywords： radiation dosage radiology radiation protection radiography/statistics & numerical data

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Probabilistic model for vessel-bridge collisions in the Three Gorges Reservoir

Bo GENG , Hong WANG , Junjie WANG ,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 3, Pages 279-285 doi: 10.1007/s11709-009-0044-z

Abstract: Based on a field observation on vessel transit path of three bridges over the Yangtze River in the Three Gorges Reservoir, and an analysis of the geometric probabilistic model of transiting vessels in collision probability calculation, the aberrancy angle and vessel velocity probabilistic model related with impact force, a probabilistic model is established and also verified by goodness-of-fit test. The vessel transit path distribution can be expressed by the normal distribution model. For the Three Gorges Reservoir, the mean and standard deviation adopt 0.2 and 0.1, respectively ( is the channel width). The aberrancy angle distribution of vessels accepts maximum I distribution model, and its distribution parameters can be taken as 0.314 and 4.354. The velocity distribution of up-bound and down-bound vessels can also be expressed by the normal distribution model.

Keywords： vessel-bridge collision probabilistic model parameter statistics

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Artificial intelligence and statistics Perspective

Bin YU, Karl KUMBIER

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 1, Pages 6-9 doi: 10.1631/FITEE.1700813

Abstract: Artificial intelligence (AI) is intrinsically data-driven. It calls for the application of statistical concepts through human-machine collaboration during the generation of data, the development of algorithms, and the evaluation of results. This paper discusses how such human-machine collaboration can be approached through the statistical concepts of population, question of interest, representativeness of training data, and scrutiny of results (PQRS). The PQRS workflow provides a conceptual framework for integrating statistical ideas with human input into AI products and researches. These ideas include experimental design principles of randomization and local control as well as the principle of stability to gain reproducibility and interpretability of algorithms and data results. We discuss the use of these principles in the contexts of self-driving cars, automated medical diagnoses, and examples from the authors’ collaborative research.

Keywords： Artificial intelligence Statistics Human-machine collaboration

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Application of Cu nanoparticles as N32 base oil additives

Qiang HE, Jun YE, Hongzhao LIU, Jinling LI,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 1, Pages 93-97 doi: 10.1007/s11465-009-0083-0

Abstract: Cu nanoparticles as N32 base oil additives are studied in the paper and their structure is characterized by transmission electron microscopy (TEM) and X-ray powder diffraction spectroscopy (XRD). The widely used steel-steel friction system is chosen to test the feasibility and practicality of Cu nanoparticles as bearing lubricant additives. The results show that N32 base oil with 0.5% Cu nanoparticle can improve the test sample contact fatigue life than pure N32 base oil.

Keywords： Cu nanoparticle tribological property contact fatigue weibull distribution

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Statistic and review of China’s earthquake prediction score

Gao Jianguo

Strategic Study of CAE 2009, Volume 11, Issue 6, Pages 129-131

Abstract: doesn't happen without signs or unknown,our country has the case summary for every large earthquake.Statistics

Keywords： earthquake earthquake prediction nearly 30 years’earthquake prediction statistics in china

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Techno-economic evaluation of wind energy in southwest Nigeria

Muyiwa S. ADARAMOLA, Olarenwaju M. OYEWOLA, Olayinka S. OHUNAKIN, Rufus R. DINRIFO

Frontiers in Energy 2012, Volume 6, Issue 4, Pages 366-378 doi: 10.1007/s11708-012-0205-y

Abstract: height, obtained from eight meteorological stations within the region was analyzed using a 2-parameter Weibull

Keywords： mean wind speed Weibull distributions wind turbine techno-economic analysis southwest geopolitical region

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Performance and kinetics of iron-based oxygen carriers reduced by carbon monoxide for chemical looping combustion

Xiuning HUA,Wei WANG,Feng WANG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 6, Pages 1130-1138 doi: 10.1007/s11783-015-0821-y

Abstract: Chemical looping combustion is a promising technology for energy conversion due to its low-carbon, high-efficiency, and environmental-friendly feature. A vital issue for CLC process is the development of oxygen carrier, since it must have sufficient reactivity. The mechanism and kinetics of CO reduction on iron-based oxygen carriers namely pure Fe O and Fe O supported by alumina (Fe O /Al O ) were investigated using thermo-gravimetric analysis. Fe O /Al O showed better reactivity over bare Fe O toward CO reduction. This was well supported by the observed higher rate constant for Fe O /Al O over pure Fe O with respective activation energy of 41.1±2.0 and 33.3±0.8 kJ·mol . The proposed models were compared via statistical approach comprising Akaike information criterion with correction coupled with F-test. The phase-boundary reaction and diffusion control models approximated to 95% confidence level along with scanning electron microscopy results; revealed the promising reduction reactions of pure Fe O and Fe O /Al O . The boosting recital of iron-based oxygen carrier support toward efficient chemical looping combustion could be explained accurately through the present study.

Keywords： chemical looping combustion iron-based oxygen carriers reduction kinetics carbon monoxide statistics