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Sweeney et al proposed a method: k-anonymity.
S is the set which contain n records, k is specific anonymous parameter, then the optimal solution of k members clustering issue is to produce a set of clusters E={ e1, e2 ,…, em } which is fit to the following requirements: (1) (2) (3) (4) Wherein, |e| represents the size of the cluster of e, p(l, i) represent the i data point in el, △(x, y) represent the distance between the data points x and y.

Work done by Upender et al., 2010 confirmed that the replacement of TeO2 by Sm2O3 in the glass network will increase the number of oxygen atoms [13].
El-mallawany and A.

Elemental analysis was carried out on a Vario EL III analyzer.
Al-Omar and I.

Tashima et al. [9-11] performed several studies related to the use of RHA obtained by an uncontrolled burning condition as mineral addition for concrete and mortars.
Payá, La transmutación sostenible de los residuos para nuevas materias primas en el ámbito del concreto.

Martínez Fernández: Avances en el estudio fractográfico de fibras cerámicas de circona-erbia mediante microscopía óptica confocal, Bol.
Peña et al: Bol.

References [1] Cross T A, Baker M R, Chapin M A, et al.
[2] Vail P R，Audemard F，Bowman S A，el a1．The stratigraphic signatures of tectonics，eustasy and sedimentology an overview [A]．In：Einsele G，Ricken W，Seilacher A eds．Cycles and Events in Stratigraphy[c]．Berlin Heidberg：Springer Verlag，1 991：617-659

Chemical composition design of the powder is: 7.2% C, 39.0% Cr, 1.5% B, an appropriate amount of V, Mo, Nb, W, Si, Mn, Ti, Al and other alloying elements.
References [1] EL Mansori and Nuoari: Int.J.Machine Tools Manufacture Vol. 47 (2007), p. 1715 [2] G.R.Huo, B.K.Zhu and R.G.Yao: Hot Working Technol.

[8] Ling Z, Ronglu X, Yi W, El-Sabbagh A: Shock and Vibration, Vol. 18(2011), p. 221
[9] Al-Ajmi M A, Bourisli R I: Mechanics of Advanced Materials and Structures, Vol. 15(2008), p. 250

Tran et al. prepared tyramine-terminated polypseudorotaxane from tyamine-terminated PEG and α-CDs and conjugated RGD toα-CDs, then the as-prepared polypseudorotane and 4-hydroxy phenyl acetic acid modifed chitosan exhibited rapid gelation and formed a bioactive hydrogels after adding horseradish peroxidase and hydrogen peroxide [5].
El-Shabouri, T.

ZHANG et al [10] studied the seismic coefficient of earth- rockfill dams with the height more than 150 m.
Four seismic waves with different frequency spectra were adopted, including Taft wave (the first wave), El Centro wave (the second wave), Banshen wave (the third wave) and Shenhu wave (the fourth wave).