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Online since: February 2012
Authors: Zhan Kui Wang, Yan Ling Zheng
Introduction The planetary gear reduction unit is basic equipment in mechanic industry, especially widespread used in machine and equipment industry, which trends in development is miniature type , high speed, low noise, high reliability.
As the key part in planetary gear reduction unit, the design and manufacture quality of the planetary gear affects the reduction unit using.
For minimum optimistic question, it can be selected as follow: (5) Where, F is the object function The model and optimal design of planetary gear The optimal design of the planetary gear is to search the best parameters making the weight of reduction unit lightest in the same load-bearing.
It also can be used easily to exchange dynamic data with other software, so it was selected for programming work; the differential evolution algorithm is selected for solving this optimal problem.
Start Input data and conditions Solving using DE Output calculating results Store the results End Figure 1 The program diagram Figure 2 The program software Conclusion The optimal design model of 2KH planetary gear is established and its optimization problem is solved by using the DE algorithm and programmed by using programming language visual basic 6.0.
Online since: September 2011
Authors: Li Jiao, Hai Zhang, Hong Wei Liu
The purpose of data fusion is to combine and process the data of multi-sensors, thus to obtain much more exact and reliable results than that of the single sensor.
And the purpose of data fusion is to combine and process the data of multi-sensors, thus to obtain much more exact and reliable results than that of the single sensor.
Dynamic multi-sensor data fusion system for Intelligent robots.
Mathematical method of multisensor data fusion.
Improved and generalized consensus data fusion method.”
Online since: December 2014
Authors: Hui Wang, Ping An Liu, Ling Ke Zeng, Yan Chun Liu, Wen Cheng Zhu, Xiao Su Cheng, Qian Ying Liang
Calculation and analysis for the Thermodynamic theory XRD phase analysis The synthesis process of titanium carbide produced by the carbon thermal reduction is a complex series of compounds.
According to the reaction equation of enthalpy delta △G0 [5] and standard state balance reaction temperature, to calculated from the reaction thermodynamics data of the materials, the results obtained are showed in table 3.
Table 3 Thermodynamic data of reactions △G0 (KJ/mol) T0(K) △G0(1)=258.12-0.199T 1297 △G0(2)=370.72-0.202T 1835 △G0(3)=224.76-0.162T 1387 △G0(4)=539.57-0.392T 1376 △G0(5)=264.56-0.210T 1260 △G0(8)=1354.15-0.965T 1403 △G0(10)=244.99-0.108T 2268 △G0(11)=314.60-0.214T 1470 △G0(12)=678.58-0.368T 1844 Mechanism of the microwave synthesis reaction of titanium carbide is concluded via analyzing the thermodynamic data and results of the XRD; When the temperature reaches to a value, the balance temperature to the lowest, and also the fastest one.
The thermodynamic analysis cannot be performed due to the lack of the thermodynamic data about γ-Ti3O5.
Comparing with conventional heating, the carbon thermal reduction reaction occurs through the heat source provided by microwave is much more different.the interphase is the Ti3O5 and γ-Ti3O5.when the microwave is used as the heat source.
Online since: October 2011
Authors: Dong Ma, Lin Zhao, Chao Ma, Jun Cheng Hu, Ming Zeng
The scheme proposed by using the new calculation method is evaluated by using data from block SH2 in the HeNan oilfield.
It can be seen that: J is determined by the requirements of desired effects, Frr is obtained by the core displacement experiments and other related parameters are given by well logging data and field document.
From the well logging data, it can be known that: layer-1 is with high permeability which accounts for 60 percent water absorption of the block.
The basic block parameters are also from the data of HeNan oilfield listed in Table-1.
[2] Mennella A,Chiappa L,Bryant S L: Pore scale mechanism for selective permeability reduction by polymer injection, SPE 39634(1998)
Online since: October 2017
Authors: Olena Mokrousova, Mariia Marukhlenko, Olena Okhmat
The high level of absorption of chromium compounds and their reduction by 30 % in the exhaust fluid was found.
The use of montmorillonite dispersions provides qualitative formation of the structure of the dermis and physical and mechanical properties, with a reduction of tanning agents’ costs/waste by 16 %.
The data received are consistent with the results of studies of working tanning solution for solid residue content and minerals in it (Table 2).
The reduction of consumption of chrome tanning compounds by almost 20 % compared to the control (option 3) to the level of 1.25 % allows to reach content of Cr2О3 of 4.3 %, which complies with the requirements of regulations.
The analysis of the data received indicates that samples obtained by processing under option 3 have the optimal value of physical and mechanical properties.
Online since: March 2013
Authors: Wei Ming Wang, Kuan Chin Shen, Amy H. I. Lee, Chun Yu Lin, Ying Wei Tu
., Hsinchu 300, Chinese Taipei aamylee@cuh.edu.tw, bm10021019@chu.edu.tw, camytu@chu.edu.tw, dd09803006@chu.edu.tw, eweiming@chu.edu.tw Keywords: Solar energy, site selection,data envelopment analysis (DEA) Abstract.
Through literature review and the experience of the experts in the field, this research aims to collect the most important factors for site selection.Data envelopment analysis (DEA) is applied to assess what place is most suitable for the establishment of a solar plantin Taiwan.
Method Data envelopment analysis (DEA) can consider multiple inputs and outputs to generate a single measuring index for each decision making units (DMU).
In an input orientation (input minimization), maximal movement toward the frontier through proportional reduction of inputs is focused [6].
[6]Chung, S.H., Pearn, W.L., Lee, A.H.I., Measuring production performance with different product mixes in semiconductor fabricator using data envelopment analysis (DEA).International Journal of Industrial Engineering- Theory, Application, and Practice 13(1), 5-17(2006).
Online since: February 2023
Authors: Farah Hanim Ab Hamid, Ikhmal Zariq Al Imran Jamal Ikhsan, Muhamad Noor Faqeh Bakar, Hariz Asyraf Hamizlan, Anwar Addini Mazzam
The volumetric flask was topped up with distilled water up to the datum line.
TCP Reduction (TR).
ANOVA is another step in RSM to test the fitness of the second-order polynomial models to the experimental data.
Furthermore, the value of R2 of the model obtained for K and TR were 0.95668 and 0.9270 respectively, indicating that the model fit the data well [27].
Thus, these values indicate the fitness of the mathematical model to the experimental data [31].
Online since: June 2015
Authors: Yu Sheng Jiang, Ke Liu, Jia Liu
The industrial analysis data of the two samples are shown in Table 1.
These data reveal that the GRP waste would be easier than coal powder to burn and burnout.
Analyses of clinker and process data.
The data of Table 2 show that the main oxides of clinker are all at desirable levels to maintain an acceptable quality at the feeding rate of 2 t/h.
Referring to the data of 2006 IPCC Guidelines for National Greenhouse Gas Inventories and IPCC CO2 emission coefficient from stationary source and mobile source (fuel), default CO2 emission coefficient and calorific value of coal are determined to 100000 kg/TJ and 5200 kcal/kg, respectively.
Online since: January 2016
Authors: Bořek Patzák, Michal Bošanský
The tasks exchange data through mutual, explicit communication.
Shared variables are shared among the individual threads, which means that the data are visible and accessible by all threads simultaneously.
Mutex acts like a lock protecting access to shared data.
While mutexes implement synchronization by controlling thread access to data, condition variables allow threads to synchronize based upon the actual value of data.
The reduction clause allows to accumulate a shared variable without explicit synchronization.
Online since: April 2014
Authors: Gwang Hee Kim, Yoon Seok Shin, Hyo Min Song
As formwork accounts for about 25 percent of the entire duration of a construction project, including nuclear power plant construction, and requires considerable efforts, to achieve a reduction in construction duration, it is necessary to reduce the duration of formwork.
Therefore, we investigated a case site of an AL-Form applied nuclear power plant in Korea to obtain fundamental data on the applicability of AL-Form to nuclear power plants.
However, in comparison with the increase of construction cost, the material arrangement and cleaning cost was decreased due to the reduction in consumable materials and wastes achieved through the use of AL-Form.
Kwon, in: The trends of Construction Duration Reduction for Nuclear Power Plant in Domestic and Foreign, and Future Prospects, KPMA Symposium (2009),p.279 [2].
Kim, The Development of a Productivity Prediction System in the Structural Framework of Apartment Housing Projects Using Data Mining Technique , Journal of Architectural Institute of Korea, Vol. 24 (2008), p.113
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