Journal of Northwest University(Natural Science Edition) 2002 Issue 3 Neural networks for solving the securities portfolio model of tradeoff between risk and return

Neural networks for solving the securities portfolio model of tradeoff between risk and return
tian xu zi

..............page:229-231

On the distribution of the inverse modulo n and its generalization
he xiao lin ; wang hui

..............page:225-228

Medical modal fast-reconstruction organization and simplification
geng guo hua ; zhao jie ; zhao zong tao

..............page:221-224

Multiple use and development of apple resources
song ji rong ; zhang jian gang ; li wen zhe ; shi hong bing ; huang jie ; ma hai xia ; xu kang zhen

..............page:217-220

The design and implement of call center for electrical customer service based on network environment
zhou tao ; gao ling

..............page:232-236

The application of PID neural network decoupling control technology in the VAV air-conditioning system
wang jun ; zuo wei ; shi lei ; ren qing chang

..............page:237-239

Quantum interference of quasi-∧-type four-level system
wang li ; zhang xiao an ; yang zhen hui

..............page:240-244

A study on the relations between survivals stress and electrode voltage
he chong bin

..............page:245-246

Influence of technics parameter of growth SiC films by HFCVD
zhao wu ; wang xue wen ; deng zhou hu ; zhang zhi yong

..............page:247-250

The effect of unequal-power Nj-th power Y-squeezing on a new type of multi-mode superimposition state light field with two state superimpositions
xue hong ; yang zhi yong ; hou zuo

..............page:251-254

A study on reconstruction of algorithms for two-dimensional medium target
wang xiao ning ; yan li ; xu jia dong

..............page:255-257,164

Syntheses of a novel imidazoline amphoteric surfactant and determination of properties
yue ke fen ; zhou chun sheng ; shi zhen ; yu li jun

..............page:258-260

The direct electrochemical synthesis of Cu(Ⅰ), Zn(Ⅱ), Fe(Ⅱ) complexes of 1, 5-bis(benzophenone) thiocarbohydrazone
liu jian ning ; gu ai ping ; zhang rong lan ; zhao jian she

..............page:261-264

Syntheses of epoxidised linseed oil
zhang ya zhou ; zhang bing lin ; zhao guo zhi

..............page:265-267

A study on prepapation of high-purity manganese carbonate from mangeniferous weste water
zhao li xin ; sun lai jiu ; guo ren min ; cheng wei hua

..............page:268-270,274

Application of BP neural network in reservoir parameter prediction of Es23 in Liangjialou Oilfield
huang shu wang ; zuo qi feng ; peng shi zuo ; wang shao hua ; liu wei

..............page:271-274

Strike-slip characteristics and hydrocarbon accumulation of M basin
zhang ya min ; liu chi yang ; wang zuo zuo ; zuo wei dong ; wang zheng bin

..............page:275-280

Fundmental characteristics and formation mechanism of secondary porosity in Jurassic reservoirs in Taibei Depression,Turpan-Hami Basin
dang ; zhao hong ; zhou li fa

..............page:281-285

Varieties, distributions and characteristics of gem-jade resources in China
qu hong jun ; liu yang jie

..............page:286-288,309

"DIGMAP" GIS softwave and its application
chen zheng jiang ; tang guo an

..............page:289-291

Design and achievement of drainage basin environmental information system based on WebGIS: With the example of drainage basin environmental information system of Jiangsu Province
wen bin ; ma xin hui

..............page:292-294

Analysis on the deteriorated mountains region of the southern calcareous stone region and its principle of the ecology
chen hai ; liang xiao ying

..............page:295-297,312

A study on the optimum for RAPD experimental protocol of CMS sorghum and their maintainers
fan chang fa ; sun chun zuo ; sun yi ; wang jing xue ; jia jing fen ; he jun xian ; guo zuo cai

..............page:298-302

A study on practice of bacteria-throwing to coke-plant wastewater degradation
lei ping ; guo ai lian ; zhang zhi jie ; zhao wen ming ; nie mai zuo

..............page:303-305

Modeling landfill methane production by a computer program
qi xiao li

..............page:306-309

A study on fermentation condition of endophytic fungus associated with taxol
zhang ya ni ; dong zhao zuo

..............page:310-312

Notes on a new specie of the genus Chelonus
he jian ping

..............page:313-315

A investigation to nurture ability of 0～3 ages children′s mother in Ningqiang experimental station
li jing ; wu li xia ; zhang fu chang ; gao xiao cai ; sun zuo ; zhang tian you

..............page:317-320

Plural variables model to the transformation problem
chen zhi zuo

..............page:321-324

nian qing de bo shi sheng dao shi zhao rong jiao shou
xue bao

..............page:316

shou jie guo ji hou ji yin zu sheng ming ke xue ji shu lun tan zai xi bei da xue ju xing
gao li xun

..............page:224

wo xiao san xue ke jin ru guo jia zhong dian xue ke
xue bao

..............page:236

wo xiao sheng ji zhong dian shi yan shi tong guo ping gu
xue bao

..............page:244

shan xi sheng sheng wu xin pian gong cheng ji shu yan jiu zhong xin zai wo xiao cheng li
xue bao

..............page:254

dian fen xi hua xue ji qi xiang guan ji shu yan jiu qu de xin jin zhan
xue bao

..............page:324