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1.
With the entrance of WTO and the exploration of the West,CI has become a trendy topic among the western companies.However there exist some problems.First of all,the understanding towards CI is inadequate;sceondly,the corporate images are lagged behind the age and the thirdly,the charge is not reasonable.I personally believe that it is necessary to establish the consciousness of company branding,realize that CI is a systematic project ,act according to the actual situation and develop the quality of CI design .Professionals should gradually set up a quality standard amidst enterprises, consumers and designers and therefore lesd CI into a benign cycle.Moreover it is to create more chances for the west to communicate with the external world and gradually increase the companies′,design workers′ and consumers′ recognition towards CI,promote the quality of design ,synchronize the CI projects in the west and the world so that our enterprises may keep up the pace with the world . 相似文献
2.
Currently,TT&C of spacecraft is performed by a ground system.Because more and more
spacecrafts are launched into orbits,it is difficult for the ground system to meet the TT&C requirements of the
spacecrafts.To explore a new,effective and economical TT&C mode is absolutely necessary.A method is
proposed to use SGBM mode in TT&C spacecrafts in low earth orbits,here.Firstly,the principle of the mode
is discussed;secondly,the system to simulate the mode is designed;thirdly,the relative issues to use the
mode are indicated;fourthly,the experimental results(simulation)to apply the mode to TT&C spacecrafts are
analyzed;and finally dawn is the main conclusion of the method. 相似文献
3.
The meridian(Jingluo经络)is a core principle of traditional Chinese medicine.The meridian
plays a central role in the regulation of human health and vitality.In the past50years,the scientific evidence
has been gathered via our physiological experiments to confirm the biological basis of the human meridian
pathway phenomenon.Meridian Science has been established as a new branch of natural science to advance
and promote the study of this important phenomenon for human life.In this paper,the authors describe the
theoretical concept of the meridian and mathematics expression,its relationship to an efficient meridian
circadian cycle,and its significance to human life. 相似文献
4.
Yuan Zhencai Zhang Xuefeng Deng Yunqing Wu Chengkui Cao Ruiling Peng Quansheng 《中国工程科学》2007,9(1):45-48
Objective:Study the influence of the stop time in winter,times of plateau on the index in early
days for plateau constructors meet;Method:Is it participate in plateau construction of2002-2004to choose,
enter into the plateau again of2003-2005practise clothes finish to mate326materials“physical examination
in front of the worker”,which is passed in Nanshankou Hospital in early days,divided into3groups according
to the difference of year for the physical examination,examine by leaning towards relevant analytical methods;
Result:(1)In the situation of day controlling about the stop time in winter,times of garrison in plateau and
blood and oxygen saturation lever(SaO2),the systolic pressure(sBP)is presented and shouldered relevantly
winter to control.Present positive correlation with the value of hemoglobin(Hb);(2)It is stopped that in case
of controlling and is garrisoned in the number of times of plateau in winter day and blood and oxygen saturation
lever(SaO2)to present positive correlation.Present and shoulder with the hemoglobin(Hb)relevantly.
Conclusion:In order to ensure the health of plateau constructors to the maximum extent,should try one’s best
to reduce the number of times of returning to the plateau in possible cases.At the same time each one
constructs for year and returns to the time that the hinterland concentrates rest should be on above90days. 相似文献
5.
The assessment of water security is an important content in the security management of water
resources due to the fact that the state of water security directly affects both the sustainable development of
regional economy and the improvement on the living quality of mankind.Grey associative analysis is introduced
and applied to assessment of water security on the basis of grey characteristics of the assessment index system of
water security.As a case study shows,grey associative analysis is used for evaluating water security of some
provinces in China,and the satisfactory assessment results are obtained.The sequence of provinces in China
with regard to water security from good to poor is obtained and,moreover,the water security level of each
region is also confirmed.The results obtained accord with the actual state of each region.They are of practical
significance and can be used to guide the management of regional water security and a sustainable development
of the economy therein.At the same time,the results demonstrate that grey associative analysis provides a new
method for assessing water security quantitatively but needs a further study. 相似文献
6.
Because rainfall seeping makes losing stability of unsaturated soil slope,and arouses great loss to
production and human being safety,the stability of unsaturated soil slope has been researched by many
scholars recently.This article mainly uses the model for the prediction of shear strength with respect to soil
suction,developed by Vanapalli and Fredlund to formulate rainfall seeping how to affect the stability of
unsaturated soil slope.Firstly,volumetric water content of unsaturated soil slope changes with rainfall
duration,and effective saturation changes with its volumetric water content.Secondly,soil volume weight
changes with its volumetric water content.Thirdly,matric suction also changes with its volumetric water
content.According to these causes,this article researches how much they make the contribution to the
minimum safety coefficient respectively.At last,these factors roundly considered,this article gets the rule of
minimum safety coefficient of unsaturated soil slope with rainfall duration that is minimum safety coefficient
gradually increasing firstly,then decreasing that is composed of two sectors,first is slowly decreasing,then is
fast decreasing after some value. 相似文献
7.
The Three-Gorge Water Conservancy Project on the Yangtze River started to impound water by
locking gates on June1,2003.A swarm of more than2000small earthquakes suddenly occurred densely along the river section in Xinling Town north of Badong,Hubei Province,on June7.This caused grave concern in the following years,but,with the completion of the second- and third-phase engineering construction,the water level in the reservoir will rise up to156m and175m respectively,no matter whether it can induce larger and stronger earthquakes.After an analysis of the distribution of active faults in the eastern part of the reservoir area,their intersections and capability to generate earthquakes from a seismo-tectonic viewpoint,we consider that after the reservoir impounding,two potential focal zones existing in Badong and Zigui counties may generate M5.5earthquake,the seismic intensity of which may reachⅧ.It will induce landslide bodies
in the reservoir area to be reactivated and slide.The evidence is the large-scale landslide occurring on the Shazhenxi Creek river in Zigui County on June12,2003. 相似文献
8.
Chlorophylls and carotenoids are the main pigments in leaves of higher plants.They combine to give
color to leaves.Based on the CIE1931chromaticity coordinates of chlorophylls and cartotenoids,which were
obtained from their classical absorption spectra and the law of additive color mixing,the theoretical color gamut
of higher plant leaves is determined.The theoretical prediction agrees well with our experimental results. 相似文献
9.
Shaker screen is one of important equipments in the industry of oil,metallurgy,coal and timbering.
The movement locus of shaker screen affects the capacity and efficiency of shaker screen to split the solid
particle from crude ore directly.To test movement of shaker locus,two eddy current transducers are employed.
A discussion of the usage of these eddy current transducer to test and acceleration sensors will be made.The
experiment results from a real elliptic shaker screen have good agree with the design requirements. 相似文献
10.
In order to improve the finite analytic method’s adaptability for irregular unit,by using coordinates
rotation technique this paper establishes a five-point element scheme of finite analytic method.It not only
solves unsteady groundwater flow equation but also gives the boundary condition.This method can be used to
calculate the three typical questions of groundwater.By compared with predecessor’s computed result,the
result of this method is more satisfactory. 相似文献
11.
According to the character and the condition for shell defor mation and force balance,we have set up
the mathematical models of the contact angle and the contact pressure distribution between the tyre and the
shell,studied The features of a multi-body contact model between the roller and the tyre,and developed the
build-up procedure of the contact finite element model between the roller and the tyre.The stress distribution
rule of the roller and the tyre is obtained as follows.The contact center is the center of the contact stress
circle,and the contact stress is also reduced gradually from the contact center to the contact boundary.The
equivalent stress of the tyre varies5times per circle,thus making the trye fracture easily. 相似文献
12.
The Cu唱10Ag and Cu唱10Ag唱RE(RE=Ce,Y)alloys in situ filamentary composites were prepared.
The relationships of the ultimate tensile strengths(UTS)and microstructure changes of the composites were
studied.With increasing of the true strainη,the sizes of the Ag filaments in the composites reduce accord ing
to a negative exponential function ofη:d=d0·exp(-0畅228η),and the UTS of the composites increase also
according to a exponential function ofη,σCu桙Ag=σ0(Cu)+[kCu桙Ag d0-1桙2]exp(η桙3),here d0is a coefficient
related to the original size of Ag phase.The strain strengthening follows a two唱stage strengthening effect.The
strengthening mechanisms are related to changes of microstructure in the deformation process.At the low true
strain stage,the strengthening is mainly caused by the working hardening controlled by dislocation increasing;
at the high true strain stage,the strengthening is mainly caused by the super唱fine Ag filaments and the large
coherent interfaces between the Ag filaments and Cu matrix.The trace RE additions and the rapid solidification
obviously refine scales of the Ag filament of the composites,and therefore obviously increased the strain
strengthening rate.The microstructure refinement of the composites,especially the refinement of Ag filament,
is the main reason of the high strain strengthening effect in Cu唱Ag alloy in situ filamentary composites. 相似文献
13.
Gautam Chandra Mondal Abhay Kumar Singh Tej Bahadur Singh Brajendra Kumar Tewary Amalendu Sinha 《材料科学与工程:中英文A版...》2013,(8):540-549
A total of 33 samples of mine water discharges from the different mines of West Bokaro Coalfields of Hazaribag district of Jharkhand, India, were analyzed to carry out qualitative assessment and suitability for domestic, irrigation and industrial purposes. The electrical conductivity (EC) for measured samples and spatial differences reflects the wide variation in lithology, surface activities and hydrological regime prevailing in the region. The anion chemistry shows the dominance of SO42- and HCO3 with minor contribution from CI, NO3 and F. The cation chemistry indicate that 79% of the samples are Ca 〉 Mg 〉 Na 〉 K, while the 6% belong to Ca 〉 Na 〉 Mg 〉 K and 1% of Ca 〉 Mg 〉 K 〉 Na. Concentrations of some heavy metals (Fe, Mn, Ni, Cr) are found to be well above the prescribed permissible levels recommended for the drinking water. The water quality assessment for drinking purposes indicate that most of the mine water having high TDS, total hardness (TH) and sulphate concentrations, suggests that mine water of the study area is not suitable for direct use in drinking and domestic purposes. The mine water can be used for irrigation purposes; however, high values of salinity, %Na, SAR, RSC and Mg-hazard at certain sites restrict its suitability for agriculture uses. 相似文献
14.
Lu Zhongwu 《中国工程科学》2007,9(2):111-114
Some notes on sustainable development and scientific outlook on development were given.It is
addressed that the mission of higher education to contribute to sustainable development should be reinforced and further expanded.The present situation of China’s higher education and the improvements required were analyzed.Two modes of thinking(reductionism and holism)and the relationship between the mode of thinking and the mode of development were discussed.The change in the mode of thinking is the key point for Chinese higher education,and more intensive reform of teaching affairs is necessary.A proposal of the revision of China’s Higher Education Act and University Constitutions was put forward. 相似文献
15.
From the viewpoint of disaster prevention in the urban areas,this paper analyzes the value of urban
public security system,selects typical cases to make a comparison of Chinese and foreign public security
treatment mechanisms,and makes systematic summarization of the Chinese and foreign historic experiences.
Then,the paper puts forward some designs on structure of the Chinese urban public security system structure.
This paper is of the opinion that at present the management of urban public security concerning unexpected
incidents should be strengthened.The effective way is to set up the sound urban public security system,urban
public security mechanism and related laws and regulations. 相似文献
16.
A new approach to the research of the distribution of prime-triplets is developed.It differs from the
usual methods(involving the sieve method)for this kind of research,and basing on Chebyshev inequality and
on the computation of average concentration of all the related subset.It leads to the proofs of following Lemma
2and Theorem2(Lemma1and Theorem1in Reference1had been proved by means of this new method):
Lemma2 Among all the prime-triplet-subsets there exists at least one such subset which is an infinite set.
Theorem2 All the prime-triplet-subsets or infinitely many such subsets are infinite sets.
Formulas for estimating the amount of such infinite sets are provided in this paper. 相似文献
17.
Wang Jingtao 《中国工程科学》2007,9(2):129-138
Here is proposed the principle of interaction between plastic volumetric and shear strains,revealing
the main origin of generating the complexity and variety of deformations for geotechnical materials.Here are
also explained the manners of the interaction between plastic volumetric and shear strains and the conditions of
generating shear dilatancy.It is demonstrated that dependency of the stress path exists and is a combination of
effects of this interaction.According to this principle,it is theoretically proved that the space critical state line
exists,and is unique and independent of the stress history.Based on this principle,the constitutive models
that are able completely and accurately to characterize the basic behavior features for geotechnical materials
have been constructed within the framework of thermodynamics.What is determined is a general expression of
the constitutive relation as well as the inequality of the dissipative potential increment for obeying the second
law of thermodynamics. 相似文献
18.
Jiang Fuqiang 《中国工程科学》2007,9(2):153-160
Based on the corresponding theories of engineering thermodynamics and hydro-dynamics,a careful
study is made of the characteristics of air flow in different duct-embedded ways.According to critical Reynolds
number,the atmospheric critical velocity of the duct with different diameters,which makes laminar flow
different from turbulent flow,is calculated.Given the condition in which a forced flow occurs and the wind
strength is larger than the atmospheric pressure gradient along the air-duct,a rational ratio of the length to the
diameter is presented.Based on the above theory and field test data on soil temperature and embankment
settlement,the advantages and disadvantages are discussed in details of all duct-embedded ways that might
affect the stability of embankment. 相似文献
19.
Systems engineering is not a new discipline.However,up to now,there is little consensus on its
exact definition and scope.The scopes of several disciplines(neighboring disciplines of systems engineering)
overlap with that of systems engineering.In this paper,the methods to identify similarities and dissimilarities
between systems engineering and its neighboring disciplines are discussed.The research of this paper is
expected to be helpful for clarifying the definition and scope of systems engineering. 相似文献
20.
A new simple approach to effectively detect QRS-T complexes in ECG curve is described,so as to
easily get the P-wave(when AF does not happen)or the f-wave(when AF happens).By means of signal
processing techniques such as the power spectrum function,the auto-correlation function and cross-correlation
function,two kinds of ECG signal when AF does or does not happen were suc cessively analyzed,showing the
evident differences between them. 相似文献