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The method is simple and practical, the hardware resources is relatively less, high transmission efficiency , suitable for low data rate data encryption of small wireless data transmission system, can be widely used in various kinds of terminal positioning and small digital wireless receiving system. 1.
The entry of the DES algorithm has three parameters: the Data, the Key and Mode. 64 a total of 8 bytes of the Key, the Key is to work; A 64 - bit, 8 bytes for the Data to be encrypted or decrypted Data; Mode is the way of DES-working, have two kinds: encryption or decryption.
Tis is the way how DES algorithm works: if the Mode for encryption, than use the Key to encrypt the Data , generated password form of Data (64) as the output of the DES; If Mode for decryption, use the Key to the password form Data decryption of Data reduction for Data clearly form on the (64) as the output of DES.
Consistent with the Key in the ends of the communication, the two sides, the communication of source point with Key to DES encryption of core data, and then in the form of a password in the process of public communication transmission to the finish line, data on arrival, with the same Key to decrypt the password data, and recreates the plain code forms the core of the data.
Due to the operation of the data in the access operation is frequent, place the data in DARAM space, which is accessed twice each cycle,can reduce the process of conflict problems in the execution, improve the efficiency of code execution.

Due to the lack of valid testability evaluation methods for complex equipment in the final phase, a new testability evaluation method based on test data in development phase is proposed.
Finally, testability evaluation is achieved by using the field test data to construct the posterior distribution.
Thus, the field test (success/failure) data are (22, 1).
In this paper, testability test data of the development phase is fully used, and a Bayes data fusion method based on mixed Beta prior distribution is applied to analyze and evaluate the FDR of large-scale radar equipment.
Zhang, “Bayesian assessment for product reliability using pass-fail data”.

All these information can appear in the basic spatial data platform.
The integration of data in disaster reduction system based on GIS.
In this system, XML is used to unity and standard the data format, and Web Service is used to do data exchange.
The data layer provide the urban emergency system with support services, which realizes the integrated storage of spatial data and attribute data, the information exchange, information integration and so on.
The database server also provide a reliable guarantee for data management, data replication, data updating and maintenance, and data security.

In this paper, with a subway station in Beijing as a test location，the measurement and data analysis are carried out, and the schemes put forward for energy conservation and emission reduction in subway air- conditioning system.
Fig.1 Subway air-conditioner room Fig.2 Big fan system Fig.3 Small fan system Fig.4 BAS system Data testing and analysis Data test.
Tab.2 Test project and test point Test site Platform （North） Platform （South） Station hall （North） Station hall （South） Environmental control room (fan) Working area Environmental control room（air conditioning） Table tanks （front Table tanks （back） The bottom of the wind pavilion General control room The entrance of the wind pavilion Security room equipment room —— Test point Temperature and relative humidity We have done the calibration for all the instruments before the test, using formula (1) to find out the measurement deviation of each instrument, and check the measurement of the data and get relatively accurate data
Tab.3 The temperature of chilled water and cooling water Aug. 28 The inlet and outlet temperature of chilled water[˚C] Chilled water temperature difference[˚C] The inlet and outlet temperature of cooling water[˚C] Cooling water temperature [˚C] 6:45 10.7 6.9 3.8 22.8 26.3 3.5 10:30 10.7 6.9 3.8 25.3 29.8 4.5 14:30 11.3 7.4 3.9 20.9 26.4 5.5 16:00 11.4 7.6 3.8 26 31 5 19:00 11.3 7.5 3.8 23.2 25.1 1.9 21:00 11.5 7.3 4.2 25 30 5 According to the data measured, inlet and outlet temperature difference of cooling water system fluctuates much , and temperature difference is small, so the whole system is in the operation situation of high flow and low temperature difference.

It transmits air pressure data by the means of IIC
The Samsung's S3C2440A based on the ARM920T architecture is selected as the control core of the embedded gateway, together with all other unit, which is used for data acquisition, data preprocessing, data storage, and data forwarding of the atmospheric information and meteorological parameters.
The sensor node will send the acquisition data to the embedded gateway when the capacity of environmental data collected up to the set value.
“Data_Collection” thread can be used to complete the task of data collection.
It implements several functions, such as the analysis of environmental data, the more limited control alarm, data display and query, etc.

Hydrogenase-positive SRB utilize hydrogen for bacterial reduction of sulfate.
Cathodic oxygen reduction rates could be increased due to enhancement in exchange currents.
For example, for cathodic oxygen reduction for stainless steel, ennoblement could be caused by noble shift in reversible potential for the oxygen reduction or enhancement in its exchange current density.
Biofilms can also influence the nature of oxidation – reduction conditions at metal – solution interfaces.
Data on materials of construction, water and deposit analysis, microbial and metallurgical analysis and treatment are essential to examine MIC failures.

In order to select best long-time acoustical parameters, different feature reduction methods or feature selection methods are proposed by researchers.
Some research works have been focused on the automatic detection of voice disorders from the excitation waveform collected with a laryngograph, or extracted from the acoustic data by inverse filtering.
In [8], PCA and LDA are used as feature reduction methods.
Among the feature reduction methods, LDA followed by k-NN classifier gives the best accuracy of 90.25%.
Moqarezadeh, Identification of Voice Disorders Using Long-Time Features and Support Vector Machine with Different Feature Reduction Methods, J.

The most important cause of UHI is directly related to the fact that urbanization induces an increase in impermeable surfaces that absorb heat and a reduction in natural vegetation.
In addition, they respond to other problematics, such as stormwater management, improvement of water quality, reduction of pollution, sound absorption and reduction of vehicle rolling noise (Nguyen, 2014).
For this study, the test specimens were placed outside during three hot days, from 23/06/2020 to 26/06/2020, while recording meteorological data.
Meteorological data (ambient temperature, relative humidity, wind speed, radiation flux) were measured every half hour using a "Davis Vantage Pro 2" weather station.
The weather was clear and sunny with no clouds. 3 RESULTS AND DISCUSSION 3.1 Evolution of meteorological data over time Meteorological data were recorded every half hour of the experimental period for three days between June 23, 2020 at 9:00 am and June 26, 2020 at 9:00 am.

The power flow analysis of the distribution networks with penetration of non-linear loads can either be done using a power quality logging equipment to record the data of power quality phenomenon which is then used to accurately model the distribution network or the standard power quality load models are incorporated into the distribution network for simulation analysis [5].
The effectiveness of capacitor bank and harmonic filters for voltage profile improvement and harmonic distortion reduction were investigated in the study by [14] and [15] respectively.
Input Network data End Start Fig. 1.
Reinforcement with reactive power compensators and filters Conclusion and Recommendation Cost Analysis Load Flow analysis Harmonic Flow Analysis Power supply quality Analysis Distribution Network Modelling The IEEE 33-Bus distribution network was modelled with the data obtained from Sreevidya et al., (2019) and the mapping chart data of Benin Electricity Distribution Company (BEDC), Ado-Ekiti Business District was used to model Ajilosun 43-Bus Feeder network.
Power losses on the Distribution Network Feeders Power Losses Before Reinforcements After Reinforcements IEEE 33-Bus P- 385.67 kW, Q- 697.28 kVar P- 222.46 kW, Q- 648.33 kVar Ajilosun 43-Bus P- 707.24 kW, Q- 1,458.9 kVar P- 558.1 kW, Q- 1,227.95 kVar The results on Table 3 depicts a feeder capacity increase for the distribution networks due to the reduction in active power losses and an improvement in the power factor due to the reduction in reactive power losses.

Owning to an effect of increment of damping device with the new type lead dampers, there is a reduction by 40% above in the maximum root stress of porcelain bushing.
Thus the fashion of vibration-reduction control of the dampers is to provide additional damping to the equipments.
Table 4 provides the data of time history of stress at the root of porcelain bushing by random seismic wave with different amplitude.
It changes dynamic performance of 1100kv porcelain arrester after being established , resulting in a reduction of stress of the root of porcelain bushing by more than 40%, as well as an obvious reduction of replacement of the equipment top at the same time.