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DESIGnInG A HYBRID InTELLIGEnT MInInG SYSTEM FOR CREDIT RISK EVALUATIOn

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Journal of Systems Science & Complexity 2008年第4期21卷 527-539页

作者： lean YU Shouyang WAnG Fenghua WEn Kin Keung LAI Shaoyi HE Institute of Systems Science Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100190 China. School of Economy and Management Changsha University of Science ~ Technology Changsha 410076 China. Department of Management Sciences City University of Hong Kong Tat Chee Avenue Kowloon Hong Kong. Department of Information Systems and Operations Management College of Business Administration Cali fornia State University San Marcos San Marcos CA 92096-0001 USA.

In this study, a novel hybrid intelligent mining system integrating rough sets theory and support vector machines is developed to extract efficiently association rules from original information table for credit risk evaluation and analysis. In the proposed hybrid intelligent system, support vector machines are used as a tool to extract typical features and filter its noise, which are different from the previous studies where rough sets were only used as a preprocessor for support vector machines. Such an approach could reduce the information table and generate the final knowledge from the reduced information table by rough sets. Therefore, the proposed hybrid intelligent system overcomes the difficulty of extracting rules from a trained support vector machine classifier and possesses the robustness which is lacking for rough-set-based approaches. In addition, the effectiveness of the proposed hybrid intelligent system is illustrated with two real-world credit datasets.

关键词： Credit risk evaluation hybrid intelligent system rough sets support vector machine.

黑臭水体疏浚底泥耦合生物质材料协同好氧堆肥中试

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环境工程 2024年第3期42卷 138-146页

作者：宋楚轩唐文英罗双雪旷阁张伟周乐安高阳袁雨菲孙士权长沙理工大学水利与环境工程学院长沙410114 湖南省交通运输厅交通建设造价管理站长沙410016 洞庭湖水环境治理与生态修复湖南省重点实验室长沙410114

采用不同比例的麸皮和发酵青草等生物质材料耦合黑臭水体疏浚底泥进行好氧堆肥中试试验。针对实际工程产生的疏浚底泥,探究适宜比例的调理剂投加配比。设置不同物料配比的对照组2组(CK0、CK1)、试验组5组(T1—T5)进行中试试验,通过理化... 详细信息

采用不同比例的麸皮和发酵青草等生物质材料耦合黑臭水体疏浚底泥进行好氧堆肥中试试验。针对实际工程产生的疏浚底泥,探究适宜比例的调理剂投加配比。设置不同物料配比的对照组2组(CK0、CK1)、试验组5组(T1—T5)进行中试试验,通过理化性质、种子发芽率等指标检测揭示不同原料配比对底泥好氧堆肥过程中堆肥性能的影响。结果表明:堆肥初期,含水率控制在50%左右,C/n控制在25~35,1 d后各堆体温度均超过50℃,各组高温期(温度>55℃)维持时间超过5 d,均符合HJ 1266—2022《生物质废物堆肥污染控制技术规范》标准要求。堆肥过程中,堆体升温速率和最高温度随着生物质材料添加量的增加呈递增趋势,其中T1和T2组的最高温度均超过70℃并维持24 h以上,这证明将麸皮和发酵青草2种生物质材料按适宜比例混合作为调理剂能够促进堆体快速发酵;堆肥结束后,各组挥发分含量稳定在20%~30%,含水率为7%~16%,pH值为8.15~8.30,各组种子发芽指数(GI)均>140%。其中,T2组固氮作用最显著、堆肥品质最优。因此,在实际生产中,按m(疏浚底泥)∶m(发酵青草)∶m(麸皮)=400∶125∶125进行好氧发酵堆肥,可显著降低物料生物毒性并产生高肥效种植土。

关键词：疏浚底泥好氧堆肥种植土生物质材料资源化利用

numerical Analysis of the natural Gas Combustion Products

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Energy and Power Engineering 2012年第5期4卷 353-357页

作者： Fernando Rueda Martínez Miguel Toledo Velázquez Georgiy Polupan Juan Abugaber Francis Guillermo Jarquín López Celerino reséndiz Rosas José ángel Ortega Herrera researching and Graduate Section Applied Hydraulics and Thermal Engineering Laboratory ESIME - IPn researching and Graduate Section ESIME Culhuacan - IPn México D.F researching and Graduate Section Pachuca Technological Institute Pachuca Hidalgo México researching and Graduate Section. ESIME - IPn

The combustion products of fuels containing the elements C, H, O, n and S are calculated. The methodology is based on the equations obtained in the stoichiometric balance of atoms. The adiabatic flame temperature is determined considering that the pressure of the boiler furnace remains constant. The scope of this work is limited to the analysis of natural gas (methane) with molecular formula CH4. The methodology can, however, be employed for the calculation of combustion products of a great variety of hydrocarbons under the established *** the development of the methodology two cases are contemplated: Φ ≤ 1 (lean and stoichiometric mixture) and Φ > 1 (rich mixture). In the first case it is considered that when the combustion is complete, the combustion products are O2, H2O, CO2, n2, SO2, and the solution follows directly. When the combustion is incomplete, however, the products H, O, n, H2, OH, CO, nO, O2, H2O, CO2, n2 and SO2 can be generated, according to Stephen R. Turns, (2000). When bal-ances of atoms are performed, four conservation equations are obtained, one for each of the C, O, H and n elements. An additional restriction requires that the sum of the molar fractions of the products equals one mol. Finally, seven equilibrium constants, corresponding to the seven chemical reactions of combustion, are introduced. All this provides a system of four nonlinear equations which is solved with the newton-Raphson method.

关键词： Combustion Products Adiabatic Flame Stoichiometric Mixture

Investigations on Low Speed Axial Compressor with Forward and Backward Sweep

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Journal of Thermal Science 2007年第2期16卷 121-133页

作者： M.Govardhan O.G.Krishna Kumar n.Sitaram Thermal Turbomachines Laboratory Department of Mechanical EngineeringIndian Institute of Technology MadrasChennai 600036India

In the recent past, experimental studies have shown some advantages of blade lean and sweep in axial compressors. As most of the experimental results are combined with other features, it is difficult to determine the effect of individual parameters on the performance of the compressor. The present numerical studies are aimed at understanding the performance and three-dimensional flow pattern at the exit of swept and unswept rotors. Three rotors, namely; unswept, 200 forward swept and 200 backward swept rotors are analysed with a specific intention of understanding the pattern of the blade boundary layer flow. The analysis was done using a fully three-dimensional viscous CFD code CFX-5. results indicated reduction in pressure rise with sweep. Backward sweep is detrimental as far as the performance near endwalls is considered. On the other hand total pressure loss in the wake in mid span region is less with backward sweep, which favours its application here. However, backward sweep adversely affects the stall margin. The ability of the forward sweep to deflect the streamlines towards hub gets diminished at low flow rates. Forward sweep changes the streamline pattern in such a way that the suction surface streamlines are deflected towards the hub and the pressure surface streamlines are deflected towards the easing. An opposite behaviour is observed in backward swept rotors.

关键词： Sweep pressure rise streamline shift stall margin blade loading

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AEPPS对超支化聚酰胺纳滤膜性能的影响

精细化工 2020年第3期37卷 590-597页

作者：段龙繁邓慧宇陈庆春邦宇晏乐安徐又一东华理工大学核资源与环境国家重点实验室江西南昌330013 浙江大学高分子科学研究所浙江杭州310027

通过与均苯三甲酰氯(TMC)的界面聚合反应,将n-氨乙基哌嗪丙基磺酸盐(AEPPS)两性离子化合物引入超支化聚酰胺纳滤膜中以改善膜性能。着重考察AEPPS的质量分数对膜性能的影响。结果表明,与以往报道该物质与哌嗪或间苯二胺等小分子混合使... 详细信息

通过与均苯三甲酰氯(TMC)的界面聚合反应,将n-氨乙基哌嗪丙基磺酸盐(AEPPS)两性离子化合物引入超支化聚酰胺纳滤膜中以改善膜性能。着重考察AEPPS的质量分数对膜性能的影响。结果表明,与以往报道该物质与哌嗪或间苯二胺等小分子混合使用效果不同,当AEPPS与端氨基超支化聚酰胺混合作为水相反应物时,随着AEPPS质量分数的增加,膜的脱盐顺序发生变化,由na2SO4>Mg SO4>Mg Cl2>na Cl逐渐变为Mg SO4>Mg Cl2≈na2SO4>na Cl,最后是Mg SO4>na2SO4>Mg Cl2>na Cl。脱盐率先增大后降低,膜通量呈现相反趋势。AEPPS的引入增强了膜的亲水性及抗蛋白质吸附能力。当水溶液中AEPPS质量分数为0.6%时,制备的纳滤膜nF06在牛血清蛋白或溶菌酶蛋白溶液中反复运行3次后,通量恢复率分别为99.3%和99.4%。

关键词： n-氨乙基哌嗪丙基磺酸盐端氨基超支化聚酰胺纳滤膜脱盐抗蛋白质吸附水处理技术

Physical activity and nutrition attitudes in obese Hispanic children with non-alcoholic steatohepatitis

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World Journal of Gastroenterology 2011年第39期17卷 4396-4403页

作者： Lana n Hattar Theresa A Wilson leanel A Tabotabo E O'Brian Smith Stephanie H Abrams Division of Pediatric Gastroenterology Hepatologyand NutritionBaylor College of Medicine Stephanie H Abrams Department of PediatricsBaylor College of Medicine

AIM:To assess nutrition,physical activity and health-ful knowledge in obese children with biopsy-proven nonalcoholic steatohepatitis(nASH or nA)compared to children without liver ***:Children with biopsy-proven nASH comprised the nASH ***,sex and ethnicity matched control groups consisted of obese(OB)and lean(CO) children with no liver *** were adminis-tered the School Physical Activity and nutrition Survey and one blood draw was ***:Fifty-seven patients were enrolled with a mean age of 12.1±2.1 years,and all were *** though the OB and nA had a similar increased body mass index(%),35%of the nA group always read nutrition labels compared to none in the OB(Pnd more nA children felt their diet is"less healthy".nA consumed the least amount of fruits with only 25%having≥1 fruit/d vs 45%in OB and 64.7% in CO(PnA vs CO).Only 15%of nA subjects performed light exercise vs 35%and 59%of OB and CO groups,respectively(P=0.02).The mean physical activity score was lowest in the nA group(Pngst the subjects with nASH,we found that 100% of patients with grade 2 or 3 fibrosis had a sedentary score>2 compared to only 63.6%of those with grade 1 or no fibrosis(PnCLUSIOn:Children with nASH had increased sedentary behavior,decreased activity,and fruit *** studies may determine the benefit of changing these behaviors as treatment for nASH.

关键词： non-alcoholic steatohepatitis Hispanic Pe-diatric nutrition Physical activity School physical activity nutrition survey

non-alcoholic Fatty Liver Disease in South Asians:A Review of the Literature

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Journal of Clinical and Translational Hepatology 2017年第1期5卷 76-81页

作者： Sital Singh Gabriela n.Kuftinec Souvik Sarkar Division of Gastroenterology and Hepatology and Department of Internal Medicine University of CaliforniaDavisUSA Department of Internal Medicine University of CaliforniaDavisUSA

non-alcoholic fatty liver disease(nAFLD)and non-alcoholic steatohepatitis(nASH)are national and global *** disease is characterized by a spectrum of liver steatosis(fat deposition),inflammation(in nASH)and *** and specifically nASH can lead to cirrhosis,which carry risks of progression to portal hypertension and hepatocellular carcinoma(HCC).nASH is also associated with higher mortality from cardiovascular *** of the data for nAFLD has been obtained from the perspective of developed nations,although the disease is increasing and threatening to reach epidemic proportions across the *** data is notable for high prevalence of nAFLD in South Asian populations,presumably resulting from a combination of underlying genetic polymorphisms and changes in socio-economic *** is also notable that an‘Asian Paradox'has been defined for nAFLD based upon the observation of lower than predefined body mass index(BMI),otherwise termed as"lean nAFLD",among this ***,data remains limited in regards to the characteristics of nAFLD/nASH in this *** this article,we present a review of the literature and discuss the prevalence,associated risk factors and burden of HCC in South Asians with nAFLD.

关键词： non-alcoholic fatty liver disease(nAFLD) non-alcoholic steatohepatitis(nASH) South Asia

Commercialization of disruptive innovations:Literature review and proposal for a process framework

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International Journal of Innovation Studies 2021年第3期5卷 127-144页

作者： Javier nieto Cubero Saheed Adebayo Gbadegeshin Carolina Consolación Design Processes research Group EINACentre Universitari de Disseny I ArtUniversitat Autonoma De Barcelona08017BarcelonaSpain Department of Management and Entrepreneurship Turku School of EconomicsUniversity of Turku20014TurkuFinland Department of Management ETSEBCUniversitat Politecnica De Catalunya08034BarcelonaSpain

The challenges of disruptive innovations have gained significant attention from both academics and practitioners,commercialization being one of the most critical *** the same time,however,it is the less studied area of disruptive ***,this article examined scholarly papers on the commercialization of disruptive innovations through a multidisciplinary systematic literature *** resulted in the analysis of 64 high-quality peer-reviewed academic *** analysis highlighted the commercialization models and main constructs that are affecting the commercialization process:market orientation,market learning,user’s involvement,market configuration,adoption networks and stakeholders,and innovation *** study evidences how commercialization has evolved from a later stage in innovation to influence even the early phases of innovation,characterized in turn by exploration,learning and ecosystem creation ***,the analysis led to a proposition that established an integrated commercialization model for high uncertainty *** model has three phases:1)Concept/value proposition validation,2)Business model validation&Market creation,and 3)Creating sales in the majority ***,the article contributes to a better understanding of commercialization processes in high uncertainty innovations,bridging also the academic-practitioner divide.

关键词： Disruptive innovation Radical innovation Emerging technologies Commercialization process Market creation Scale-up lean start-up

Dietary manipulation and testosterone replacement therapy may explain changes in body composition after spinal cord injury: A retrospective case report

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World Journal of Clinical Cases 2019年第17期7卷 2427-2437页

作者： Ashraf S Gorgey Robert M Lester Mina P Ghatas Sakita n Sistrun Timothy Lavis Spinal Cord Injury and Disorders Service Hunter Holmes McGuire VAMCRichmondVA 23249United States Department of Physical Medicine and Rehabilitation Virginia Commonwealth UniversityRichmondVA 23249United States Bionutrition Service Center for Clinical and Translational ResearchVirginia Commonwealth UniversityRichmondVA 23249United States

BACKGROUnD Reduced level of physical activity,high-fat diet and skeletal muscle atrophy are key factors that are likely to contribute to deleterious changes in body composition and metabolic following spinal cord injury (SCI).Reduced caloric intake with lowering percentage macronutrients of fat and increasing protein intake may likely to improve body composition parameters and decrease ectopic adiposity after *** To highlight the effects of dietary manipulation and testosterone replacement therapy (TRT) on body composition after SCI METHODS A 31-year-old male with T5 SCI was administered transdermal TRT daily for 16 *** intake and percentage macronutrients were analyzed using dietary *** resonance imaging and dual-energy x-ray absorptiometry were used to measure changes in body *** Caloric intake and fat percentage were reduced by 445 kcal/d and 6.5%,*** body weight decreased by 8%,body fat decreased by 29%,and lean mass increased by 7%.Thigh subcutaneous adipose tissue cross-sectional area was reduced by 31%.COnCLUSIOn Manipulation of caloric intake,fat percentage,and protein percentage may have influenced body composition after SCI.

关键词： Spinal cord injury Diet High-protein Low-fat nutrients Basal metabolic rate Case report