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Online since: February 2011
Authors: Fu Jen Wang, Kuei I Tsai, Tong Bou Chang, Hao Chuan Lee, Yu Jun Lin
Performance analysis of variable-speed compressor inverter driven has been studied extensively based on experimental data.
All of the experimental data were recorded at steady state.
The reduction of evaporator capacity can be improved while power consumption of compressor reduces apparently owing to the better superheat controlled by TEV.
All of the experimental data were recorded at steady state.
The reduction of evaporator capacity can be improved while power consumption of compressor reduces apparently owing to the better superheat controlled by TEV.
The Effect of Damage and Geometrical Variability on the Tensile Strength Distribution of Flax Fibers
Online since: November 2010
Authors: E. Spārniņš, Janis Andersons
The resulting strength distribution is further validated by applying it to experimental
data of elementary flax fiber strength at several gauge lengths.
Elementary fiber strength and modulus correlates with the average fiber diameter in that increase in fiber diameter is related to reduction of its stiffness and strength [5, 7].
Finally, fiber strength distribution due to geometrical variability is given by ( ) ( ) ∫ ∫ ∞ − ∞ − −−= = 0 0 0 1 00 2 0 exp exp1 dt Sc t Sc tm tl l dt t c t c p t PP S S S m m m S m S nd δ δ σ σ σ δ (3) where the analytical form of distributions ( )xPδ , ( )xPS , applied for fitting of experimental data as shown in Figs. 2 and 3, is substituted in the integrand in the right hand side of the equation.
Elementary fiber strength and modulus correlates with the average fiber diameter in that increase in fiber diameter is related to reduction of its stiffness and strength [5, 7].
Finally, fiber strength distribution due to geometrical variability is given by ( ) ( ) ∫ ∫ ∞ − ∞ − −−= = 0 0 0 1 00 2 0 exp exp1 dt Sc t Sc tm tl l dt t c t c p t PP S S S m m m S m S nd δ δ σ σ σ δ (3) where the analytical form of distributions ( )xPδ , ( )xPS , applied for fitting of experimental data as shown in Figs. 2 and 3, is substituted in the integrand in the right hand side of the equation.
Online since: July 2011
Authors: Xiao Qing Xie, Xing Can Pi, Guan Nan Li, Yun Lang Liu, Hai Jian Lu
Beichuan county's post-earthquake resettlement housing standard
Construction area (㎡)
Use Area(㎡)
Including(L:living room, B:bedroom)
L
B
kitchen
bathrom
balcony
1 L 1 B
50
40
12
15
5
3
2
1 L 2 Bs(small)
50
40
12+8
15
5
3
2
1 L1 B(big)
70
56
14+10
20
5
3
2
1 L3Bs
70
56
12+8+8
15
5
3
3
1L4Bs
90
72
12+10+8+8
20
5
4
3
Data Source: Sichuan Mianyang city government network, http://www.mianyang.gov.cn
3.2.2.Rural housing policy
Rural household can only have one homestead, the homestead can be broadly divided into 3 people / households, 4 persons / households and 5 persons / households.
The Beichuan post-earthquake reconstruction of rural homestead and architecture covers index Type of flat Number of household size (people) homestead area (M / household) Construction basal area (square meter) Compensation standards (Yuan) 3 people/ household 1-3 ≤90 households does not exceed 35 square meters in mountain aera does not exceed 30 square meters in hill and flat dam aera . 16000/ household 4 people/ household 4 >90--≤120 19000/ household 5 people/ household ≥5 >120--≤150 22000/ household Data Source: Sichuan Mianyang city government network, http://www.mianyang.gov.cn Beichuan county's disposal policy for post-earthquake housing played an important role in solving housing problems, but there are still some issues: (1) settlement room pricing standards.
Disaster Reduction in China(2005).
The Beichuan post-earthquake reconstruction of rural homestead and architecture covers index Type of flat Number of household size (people) homestead area (M / household) Construction basal area (square meter) Compensation standards (Yuan) 3 people/ household 1-3 ≤90 households does not exceed 35 square meters in mountain aera does not exceed 30 square meters in hill and flat dam aera . 16000/ household 4 people/ household 4 >90--≤120 19000/ household 5 people/ household ≥5 >120--≤150 22000/ household Data Source: Sichuan Mianyang city government network, http://www.mianyang.gov.cn Beichuan county's disposal policy for post-earthquake housing played an important role in solving housing problems, but there are still some issues: (1) settlement room pricing standards.
Disaster Reduction in China(2005).
Online since: December 2011
Authors: Gang Chen, Jie Zhang, Nai Wang Yang, Yang Guang Wang
The performances of NaLS and NaHLS as drilling fluid additive were tested according to API Procedure No.13B
Scheme 1 The hydroxymethylation of lignosulfonate and formaldehyde
Results and Discussion
Evaluation of NaHLS as drilling fluid additive
Data for the NaHLS samples, as well as LS, prepared for drilling fluid tests were given in Table 1, which include: plastic viscosity(PV), yield point(YP), apparent viscosity(AV), gel strength(G10s), filter loss(FL), density(ρ), pH value, specific conductance(S) and thickness of mud cake(H).
NaLS and NaHLS can reduce the FL under room temperature and 120℃ with 0.9-3.5 ml reduction compared with the FL of base mud.
These data imply that NaHLS functions are better than NaLS under any conditions, particularly under higher temperatures (180 ℃) and that further work on this new class of additives is warranted.
NaLS and NaHLS can reduce the FL under room temperature and 120℃ with 0.9-3.5 ml reduction compared with the FL of base mud.
These data imply that NaHLS functions are better than NaLS under any conditions, particularly under higher temperatures (180 ℃) and that further work on this new class of additives is warranted.
Online since: May 2011
Authors: Ren Jie Wang, Shou Zhi Pu, Shi Qiang Cui
Generally, photochromic diarylethenes undergo reversible photoinduced cyclization/cycloreversion reactions between two isomers upon irradiation with UV and visible light, and the two isomers of diarylethenes differ from each other not only in their absorption spectra, but in many physical and chemical properties including geometry, refractive index, as well as oxidation/reduction potential, etc [5,6].
As shown in Figure 4, the quality of images recorded in 1c/PMMA film showed a clear contrast and without cross talk, which are important in rewritable data storage.
The optical storage experiment showed that the diarylethene derivative can be use as a data storage medium.
As shown in Figure 4, the quality of images recorded in 1c/PMMA film showed a clear contrast and without cross talk, which are important in rewritable data storage.
The optical storage experiment showed that the diarylethene derivative can be use as a data storage medium.
Online since: June 2012
Authors: Xiang Ping Pang, Hao Yan, Kai Liu, Kun Qian
Other important applications in which closed loop thermosyphons are preferred to forced circulation loops, are those in which the absence of pumping elements allows a considerable costs reduction, e.g. geothermal plants or solar heaters, that have low temperature thermal sources but relatively high circulating flow rate [3], or, finally, where the pumping system cannot be conveniently positioned, such as cooling systems for internal combustion engines, turbine blade cooling or computer cooling [4].
An efficient modelling approach of the considered system is based on an approximation of its non linear partial derivative equations by using a truncated Fourier series expansion of the variables, even if different modelling strategy, based on neural NARMAX models, directly obtained from experimental data.
To this purpose, it is necessary to reconstruct the temperature function T(x,t) from the variables of the model αk(t) and βk(t), this is performed with the relation: (8) In order validate the model several simulations have been compared with experimental data.
An efficient modelling approach of the considered system is based on an approximation of its non linear partial derivative equations by using a truncated Fourier series expansion of the variables, even if different modelling strategy, based on neural NARMAX models, directly obtained from experimental data.
To this purpose, it is necessary to reconstruct the temperature function T(x,t) from the variables of the model αk(t) and βk(t), this is performed with the relation: (8) In order validate the model several simulations have been compared with experimental data.
Online since: May 2014
Authors: Kang Wang, Zhong Ke Wu, Jun Li Zhao
Spectral analysis as a dimension reduction method, it aims to embed the data into a lower dimension.
And it is difficult to verify the accuracy of the correspondence results by random data, consequently a trade-off evaluation system used to assess the accuracy of result is urgent need.
And it is difficult to verify the accuracy of the correspondence results by random data, consequently a trade-off evaluation system used to assess the accuracy of result is urgent need.
Online since: May 2014
Authors: Meng Jun Li, Ya Jie Dou, Lei Lei Chang
The Case study
The data of this case study is derived from the US weapon acquisition for the 2012 fiscal year [8], of which 60 key technologies are selected.
One is transforming the belief degrees into the Basic Probability Mass (BMP), which derives the matching degree of the assessment goal on all the combinations/rules by clustering the matching degrees of the input data on all the combinations/rules; the other is synthesizing the result of the four combinations/rules and obtaining the belief of achieving the kth level in the result, denoted as ; and the incomplete information, denoted as .
There is still much successive work needs to be done, e. g. the technology redundancy reduction, the tradeoff analysis among varied resources, the reallocation of funding budgets as well as technology groups and et al.
One is transforming the belief degrees into the Basic Probability Mass (BMP), which derives the matching degree of the assessment goal on all the combinations/rules by clustering the matching degrees of the input data on all the combinations/rules; the other is synthesizing the result of the four combinations/rules and obtaining the belief of achieving the kth level in the result, denoted as ; and the incomplete information, denoted as .
There is still much successive work needs to be done, e. g. the technology redundancy reduction, the tradeoff analysis among varied resources, the reallocation of funding budgets as well as technology groups and et al.
Online since: July 2013
Authors: Ionică Cîrciu, Mircea Boşcoianu, Vasile Prisacariu
Morphing transformations
Starting from the recent studies from the big universities and research centers (Bristol University, NASA, DARPA) we can establish a classification of the morphing concept (figure 1): omni-morphing (internal morphology with multiple non planar dynamic volume); active poly-morphing (local multidirectional geometrical modifications and the wing is aero-elastic active: sliding wings, telescopic wings, folding rotating wings, folding wings); passive poly-morphing (local multidirectional geometrical modifications); active mono-morphing (local multidirectional geometrical modifications: interconnected flaps with flight stabilizer, spoilers, weight reduction of the wings, variable volume, variable chord wing, vectorial traction); unidirectional and discreet mono-morphing (local multidirectional geometrical modifications: discreet spoilers as controlled surfaces, flaps)[1].
Example of sensors (figure 2) and collected data: weather (temperature and humidity), biometrical (the quality of the atmosphere-smoke, gas, contaminated atmosphere), navigation (GPS), telemetry (speed, altitude, pressure), attitude (the position compared to other objects, the position/form of the wing at every moment).
Data for morphing angles morph 00 morph 100 morph -100 Conclusions The special UAV missions require exceptional evolutions from UAV (evolutions at small speeds, small turns, and quick maneuver).
Example of sensors (figure 2) and collected data: weather (temperature and humidity), biometrical (the quality of the atmosphere-smoke, gas, contaminated atmosphere), navigation (GPS), telemetry (speed, altitude, pressure), attitude (the position compared to other objects, the position/form of the wing at every moment).
Data for morphing angles morph 00 morph 100 morph -100 Conclusions The special UAV missions require exceptional evolutions from UAV (evolutions at small speeds, small turns, and quick maneuver).
Online since: July 2013
Authors: Daniel Buzea, Luciana Cristea, Mihaela Ioana Baritz, Loredana Ungureanu, Diana Cazangiu
It followed the evolution of the temperature on a period of 20 minute of phone conversation; it made data acquisition at every 5 minute.
During the tests it takes into account the reduction of the measurement and analysis errors to obtain the accurate and fair measurements.
Fig. 1 Initial thermal map Fig. 2 Thermal map after 20 minutes of phone conversation From the analysis obtained by the data acquisition in the two areas (Figure 3 and Figure 4) it observes the trend of temperature increasing related to the exposure time at the electromagnetic radiation of the cell phone during the conversations.
During the tests it takes into account the reduction of the measurement and analysis errors to obtain the accurate and fair measurements.
Fig. 1 Initial thermal map Fig. 2 Thermal map after 20 minutes of phone conversation From the analysis obtained by the data acquisition in the two areas (Figure 3 and Figure 4) it observes the trend of temperature increasing related to the exposure time at the electromagnetic radiation of the cell phone during the conversations.