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Experimental data sets prove that the proposed algorithm is effective and reasonable.
So, as long as the maintenance of data on user preferences, to analyze the draw users with similar tastes, then you can be similar to the views of customers to their recommended.
Each Movie data sets collected between 1996 ~ 1997 72916 users 2456676 1682 film and evaluating values ​​of the matrix is very sparse.
Data Mining and Knowledge Discovery, 2001,5(1-2):115-153
Web Usage Mining: Discovery and Application of Interesting Patterns from Web data.

Experimental study of a novel indirect evaporative cooler Yugang Wang 1,2, a, Jiaping Liu1, Huang xiang3 1College of Environment Engineering & City Planning, Xi’an University of Architecture and Technology, Xi’an, Shaanxi, 710055, china 2College of Mechanical Engineering, Jimei University, Xiamen, Fujian, 361021, china 3College of Environmental & Chemical Engineering, Xi’an Polytechnic University, Xi’an, Shaanxi, 710048, china ayugang0312@yahoo.com.cn Keywords: Dew Point Indirect Evaporative Cooling; Performance Testing; Data Analysis Abstract.
Set up a test-bed, test the pre-cooling section, cooling section, and the units consist of them separately, then analysis the data.
From the Fig. 3, it can be obtained that with the reduction of the primary air volume, the air volume ratio of secondary / primary air is increasing, the heat transfer efficiency first increased and then decreased.

The computational analysis provides useful data on cooling-related issues such as residual stress, shrinkage, warpage [6,7].
Further reduction of this distance could lead to decreased mechanical strength of the mound.
This approach takes the initial flow data to calculate the mould temperature distribution and then uses the temperature information to recalculate the flow solution.
Based on the CFD data, the design of the CCCs was iterated three times until an acceptable flow distribution and velocity were achieved in all branches with a satisfactory pressure drop.
A similar result was achieved for the fixed half with a reduction in the hotspots' temperature from 91 ℃ to 80 ℃.

Accordingly, the usage of such systems would definitely contribute in reduction of global emissions, hence stabilizing climate change and global warming.
Discussion Aside from acknowledging different structures of PCM, as well as their selection processes, more data should be extracted from real world applications of PCM-cooled PV systems and investigated in order to truly determine what PCM type is most suitable for which PV application.
This must take place in parallel with historical data information of actual PV networks, cooled via PCM.
In some cases the TPV reduction between mutual varieties is less, such as by 3℃, like in the case of using two different Inorganic PCM.
Outzourhit, Mathematical Models Calculating PV Module Temperature Using Weather Data: Experimental Study, Lecture Notes in Electrical Engineering. 519 (2018) 630-639. [21] R.

The quantitative predictions of mixing rates at different engine speed substantiate the cause of soot emission reduction at higher engine speed.
The predicted in-cylinder pressure and heat release histories are compared with the measured data and found to be closely matching with the experimental results.
Hence, the reduction of soot emission with increase in speed is attributed to increase in rate of mixing and lean operating conditions as evident from Figures 2 and 4 respectively.
Hence, there is a reduction in soot emission at higher speeds due to enhanced fuel-air mixing.
Chen, Simultaneous Reduction of NOx and Particulate Emission Using Multiple Injections in a Small Diesel Engine.

Based on literature data[23], formation of W2C due to the reaction between the produced W and C at the cathode is spontaneous above 973 K in thermodynamic conditions.
A distinct reduction wave appeared at a potential of -0.41 V, which was attributed to the reduction of tungsten ion to metallic tungsten.
This confirmed that the reduction of tungsten ion was a one-step process.
Ag/AgCl), which corresponds to the reduction of tungsten ion.
Che,Manual of inorganic thermodynamic data.Shenyang: Northeastern university Press,Shenyang,1994

The data shows that the progress of the damage in HPFRCCs in the compressive mode is characteristic of the type of hybrid fiber and its volume fraction.
From the AE data, the second and third compressive load cycles resulted in a successive decrease in the amplitude compared to the first compressive load cycle.
Based on the analysis of the data from individual event signals stored in the AE measurement system, the decrease in AE peak amplitude generally corresponded to events having smaller ring-down counts and shorter duration times.
The Kaiser effect was confirmed from the large reduction in the AE peak amplitude observed during repetitive load cycles arising from the use of macrofibers that had a high Young’s modulus.
Therefore, we have shown that the use of hybrid fibers in cement composites can decrease the damage in the material due to the reduction in friction between the sliding contacts of the crack surfaces under cyclic loading.

Figure. 1 The location of study area: Chengguan Town Data and Calculation In this paper, the remote sensing data of Chengguan Town, including two TM images acquired in August, 2008 and September, 2010, were selected to conduct the research. 1:50,000 topographic maps were acquired from government departments and 30 meter resolution of the DEM data was adopted through Internet downloads.
Then, pre- and post-disaster land use data in the town was derived by visual interpretation.
Due to the limitation of data in the yearbook, we can not obtain all the statistics of biological resources that were consumed by humans, and the values of the ecological footprint in this paper are less than the actual values of the ecological footprint.
The color trend gradually faded, showing the post-disaster reduction of biocapacity.
The reduction of cropland is 82.78gha, accounting for 0.98% of pre-disaster biocapacity.

The resultant data showed that their flame retardancy and smoke suspension were increased by the double-diffusion treatment and the best for that by the treatment with Zn2+ solution.
The cone data reported in this work were the average of three replicated experiments.
The abrupt reduction of two chemicals at the first cycle of leaching means removal of unreacted chemicals.
On the other hand, during the leaching test, the weights of wood-lead metaborate (W-LMB) specimens decreased slightly at first and then remained almost unchanged, showing little or no mass reduction after leaching.
This increases the weight reduction initiation temperature of wood and cellulose [9].

The correspondence of the theoretical results to the data of experiment on phase states of mechanically activated oxide NdMnO3 is shown.
As a result forming of nano-size granules is accompanied by oxidation-reduction reactions as a rule.
Activation in the inevitable grinding and subsequent heat treatment processes of oxidation-reduction and decomposition of the solid solution phase, distinguished by the composition largely determines the structural and magnetic properties of the oxides.
The purpose of the present work is the construction of a theoretical model of microscopic description of the cooperative JT transition, investigation of the relation between the non-stoichiometry and the state of JT subsystem, the analysis of effects caused by mechanoactivation of oxide systems and comparison with the experimental data on phase states of mechanically activated system NdMnO3+d.
It can be seen that with the increase of nonstoichiometry or decrease of grain size essential reduction of all parameters under considerations takes place.