đổi mới kiểm tra đánh giá kết quả học tập môn toán bậc thcs

hoa duoc

Ngày tải lên : 15/05/2015, 01:00

... Foods for Extraneous Materials 137 A B C D E Extraneous Matter in Soft Cheese 140 Extraneous Matter in Jam 140 Extraneous Matter in Infant Food 141 Extraneous Matter in Potato Chips 141 Extraneous ... S = eight of sodium tartrate dihydrate (g) A = l of KF reagent required for titration of m sodium tartrate dihydrate Chapter 25 Determination of Moisture Content III Titration of Sample Prepare ... approximately 0.3 g of sodium tartrate dihydrate, previously dried at 150C for 2h Fill the buret with the KF reagent, then titrate the water in the sodium tartrate dihydrate sample as in Step...

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INTERNATIONAL STANDARD Microbiology of food and animal feeding stuffs — Horizontal method for the detection of Salmonella spp docx

Ngày tải lên : 07/03/2014, 16:20

... sugar/iron agar (TSI agar) B.6.1 Composition Meat extract Yeast extract Peptone Sodium chloride (NaCl) Lactose Sucrose Glucose Iron(III) citrate Sodium thiosulfate Phenol red Agar Water 18 3,0 ... °C for 18 h ± h 9.3 Selective enrichment 9.3.1 Transfer 0,1 ml of the culture obtained in 9.2 to a tube containing 10 ml of the RVS broth (5.2.2); transfer ml of the culture obtained in 9.2 to ... auto-agglutinable strains have been eliminated Use the antisera according to the producer's instructions if different from the description below 9.5.4.2 Elimination of auto-agglutinable strains Place...

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Báo cáo khoa học: "A Generalized-Zero-Preserving Method for Compact Encoding of Concept Lattices" pot

Ngày tải lên : 17/03/2014, 00:20

... other constraints As a result, instead of using constraints |Si | ≥ ri we can use constraints |Si | = ri Doing so reduces the search space Subset is transitive; so if we have constraints Si ... contain thousands of types We use binary constraints between every pair of types, for a total of millions of constraints—and these are variables and constraints over a domain of sets, not integers ... partial order Removing the redundant constraints means there are no constraints between elements after u and elements before, or incomparable with, u All constraints across u must involve u directly...

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Báo cáo khoa học: "a Method for Automatic Evaluation of Machine Translation" pot

Ngày tải lên : 23/03/2014, 20:20

... good translations and bad translations, we computed the modiﬁed precision numbers on the output of a (good) human translator and a standard (poor) machine translation system using reference translations ... simply by comparing ngram matches between each candidate translation and the reference translations Experiments over large collections of translations presented in Section show that this ranking ... counts up the number of candidate translation words (unigrams) which occur in any reference translation and then divides by the total number of words in the candidate translation Unfortunately, MT...

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Standard Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube Specimens)

Ngày tải lên : 26/03/2014, 21:55

... 0.485 for all portland cements and 0.460 for all air-entraining portland cements The amount of mixing water for other than portland and air-entraining portland cements shall be such as to produce ... Method C1437 10.3.2 For portland and air-entraining portland cements, merely record the flow 10.3.3 In the case of cements other than portland or airentraining portland cements, make trial mortars ... following classifications: Class A, Non-air entrained cements—for use in concrete, such as sold under Specifications C150, C595, and C1157 Class B, Air-entrained cements—for use in concrete, such...

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Báo cáo khoa học: "A Bayesian Method for Robust Estimation of Distributional Similarities" pot

Ngày tải lên : 30/03/2014, 21:20

... we apply the Bayesian framework to the calculation of distributional similarity The method is straightforward: Instead of using the point estimation of v(wi ), we ﬁrst estimate the distribution ... if we use Eq 8, meaning that the self-similarity might not be the maximum This is conceptually strange, although not a serious problem since we hardly use sim(wi , wi ) in practice If we want ... validation of the parameter tuning documents), where each sentence has a dependency parse, we extracted noun-verb and nounnoun dependencies with relation types and then calculated their frequencies...

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a novel method for the synthesis of titania nanotubes using

Ngày tải lên : 05/05/2014, 15:26

... for elemental analysis Diffuse reﬂectance ultraviolet and visible (DRUV–vis) spectra of TiO2 samples were measured from the optical absorption spectra using a UV–vis spectrophotometer (UV-2401 ... spectra of samples prepared using ethylene glycol and annealed under H2 gave maximum absorption in the visible region (Fig 10) A large red-shift also occurred for the Ti–O charge transfer transition ... polytetraﬂuoroethylene (PTFE) holder exposing only a 0.7 cm2 area to the electrolyte Nanotubular TiO2 arrays were formed by anodization of the Ti foils in 300 ml of electrolytic solution using ultrasonic...

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a novel method for the synthesis of cao nanoparticle

Ngày tải lên : 06/05/2014, 08:55

... hydrolysis be extracted out and detected via GC) In this and elimination products on the Lewis acid reaction, the chlorine atom in 2-chloroethyl sites were revealed, respectively Figure FTIR spectra of ... and were shaken for about synthesized size nanoparticles are less than 12 h Then, by micropipet extracted 10 μL 100 nm That means the synthesized catalysts of solutions and injected to GC and GC-MS ... NPs/Polyvinylpyrrolidone (PVP) 44 M Sadeghi et al., J Appl Chem Res., 7, 4, 39-49 (2013) GC analysis illustrated that 75% and 100% of 2-CEPS For the evaluation of the reaction of 2-CEPS in contact to the...

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solgel based hydrothermal method for the synthesis of 3d flowerlike zno microstructures

Ngày tải lên : 06/05/2014, 13:26

... been evaluated by photodegradation of Reactive Blue 14 (KGL) under ultraviolet (UV) irradiation The experimental results demonstrated that self-assembled 3D * Corresponding author Tel.: +86 13623731736; ... field-effect transistors [3], solar cells [4], gas sensors [5,6], among others [7] Besides the above applications, ZnO is also regarded as a promising photocatalytic material in the UV spectral range ... (FESEM; JSM-6701F, JEOL), transmission electron microscopy (TEM; JEM-2100, JEOL), and scanning electron microscopy (SEM; JSM-6390LV, JEOL) Photoluminescence (PL) spectra were measured on a Shimadzu...

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báo cáo hóa học:" A rapid method for the generation of uniform acellular bone explants: a technical note" pot

Ngày tải lên : 20/06/2014, 04:20

... http://www.josr-online.com/content/5/1/32 transplantation operation on possibly autologous bone The method must routinely result in a totally acellular sample We demonstrate that a rapid cycle of freezethawing ... overall uniform cell viability Whereas viability of non-treated days cultured bone demonstrated a central area of decreased marrow survival Macroscopically, all treatment groups, cultured on ... magnification Presence of formazan crystals within osteocytes demonstrating cellular LDH activity and therefore cell viability was demonstrated in non-cultured and non-treated bone explants The positive...

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báo cáo hóa học:" Mid-term results of ponseti method for the treatment of congenital idiopathic clubfoot (A study of 67 clubfeet with mean five year follow-up)" pot

Ngày tải lên : 20/06/2014, 04:20

... 6:3 Submit your next manuscript to BioMed Central and take full advantage of: • Convenient online submission • Thorough peer review • No space constraints or color ﬁgure charges • Immediate publication ... deformity This is best accomplished with the feet in well-fitted, open-toed, medial bar, high-top straight-last shoes attached to Denis-Browne bar of approximately Porecha et al Journal of Orthopaedic ... day, and thereafter worn only at night until the age of years By day, shoes with an open toe box, straight medial border, lateral flaring of the sole and reverse Thomas heels were used until the...

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báo cáo hóa học:" Mid-term results of ponseti method for the treatment of congenital idiopathic clubfoot (A study of 67 clubfeet with mean five year follow-up)" docx

Ngày tải lên : 20/06/2014, 07:20

... 6:3 Submit your next manuscript to BioMed Central and take full advantage of: • Convenient online submission • Thorough peer review • No space constraints or color ﬁgure charges • Immediate publication ... deformity This is best accomplished with the feet in well-fitted, open-toed, medial bar, high-top straight-last shoes attached to Denis-Browne bar of approximately Porecha et al Journal of Orthopaedic ... day, and thereafter worn only at night until the age of years By day, shoes with an open toe box, straight medial border, lateral flaring of the sole and reverse Thomas heels were used until the...

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Báo cáo hóa học: " A quantum dots and superparamagnetic nanoparticle-based method for the detection of HPV DNA" ppt

Ngày tải lên : 21/06/2014, 01:20

... different colors under the excitation of an appropriate wavelength; broad absorption spectra; and narrow emission spectra, which mean simultaneous excitation of different colored QDs by a single wavelength ... nanoparticles To demonstrate the formation of superparamagnetic nanoparticles, the as-prepared Fe O solution was dropped on the copper grid coated with carbon film and characterized by transmission electron ... extraction of DNA of cervical swab samples, PCR reaction and nucleic acid agarose gel electrophoresis and staining of ethidium bromide, while our hybridization assay method only require extraction...

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Báo cáo hóa học: " A relaxed hybrid steepest descent method for common solutions of generalized mixed equilibrium problems and fixed point problems" potx

Ngày tải lên : 21/06/2014, 01:20

... ¯ Since < − (γ − ηγ ) < 1, it follows that PΘ(gf + (I - A)) is a contraction of C into itself Therefore, by the Banach Contraction Mapping Principle, it has a unique fixed point, say z Î C, that ... be a contraction mapping with h Î (0, 1) Assume that Θ := F(S) ∩ EP(F) ≠ ∅ Let {xn}, {yn} and {un} be sequence generated by the following iterative algorithm: ⎧ ⎨ x1 = x ∈ C chosen arbitrary, ... hybrid-extragradient method for generalized mixed equilibrium problems and fixed point problems and variational inequality problems Taiwanese J Math 12, 1401–1433 (2008) Peng, JW, Yao, JC: Two extragradient...

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Báo cáo hóa học: " Research Article The Shrinking Projection Method for Common Solutions of Generalized Mixed Equilibrium Problems and Fixed Point Problems for Strictly Pseudocontractive Mappings" ppt

Ngày tải lên : 21/06/2014, 05:20

... pseudocontractive with the coefficient k ∈ 0, if Sx − Sy ≤ x−y k I−S x− I−S y , ∀x, y ∈ E, 1.2 ∀x, y ∈ E 1.3 pseudocontractive if Sx − Sy ≤ x−y I−S x− I−S y , The class of strictly pseudocontractive ... and pseudocontractive mappings Within the past several decades, many authors have been devoted to the studies on the existence and convergence of fixed points for strictly pseudocontractive mappings ... method to study strictly pseudocontractive mappings More precisely, take k ∈ 0, , and define a mapping Sk by Sk x kx − k Sx, ∀x ∈ E, 1.4 where S is strictly pseudocontractive mappings Under appropriate...

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Báo cáo hóa học: " Research Article Hybrid Method for a Class of Stochastic Bi-Criteria Optimization Problems" docx

Ngày tải lên : 21/06/2014, 07:20

... the constraints to be satisfied is greater than or equal to some value The larger this value is taken, the higher probability the constraints are satisfied In other words, the chance constraints ... introduce the so-called chance constraint method to convert it into a deterministic inequality constraint, which is used to guarantee that the stochastic constraint is satisfied with a probability ... constraint method, then the optimal solution would have less constraints violation degree than that obtained by the method proposed in this paper But in this situation, a joint chance constraint...

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Báo cáo hóa học: " Research Article A General Projection Method for a System of Relaxed Cocoercive Variational Inequalities in Hilbert Spaces" pot

Ngày tải lên : 22/06/2014, 18:20

... Kang, “A system of nonlinear variational inequalities involving strongly monotone and pseudocontractive mappings,” Advances in Nonlinear Variational Inequalities, vol 6, no 2, pp 91–99, 2003...

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A FUNCTIONAL-ANALYTIC METHOD FOR THE STUDY OF DIFFERENCE EQUATIONS EUGENIA N. PETROPOULOU AND potx

Ngày tải lên : 23/06/2014, 00:20

... Mechanics, University of Patras, 26500 Patras, Greece E-mail address: jenpetro@des.upatras.gr Panayiotis D Siafarikas: Department of Mathematics, University of Patras, 26500 Patras, Greece E-mail address: ... (2.6) or (2.12), the abstract form of u(i1 , ,i p ) in H or H1 , respectively In general, if G is a mapping in l2 (l1 ) and N is a mapping in H(H1 ), p p we call N(u) the abstract form of G(u(i1 ... form of G(u(i1 , ,i p )) if G u i1 , ,i p = N(u),ei1 , ,i p (2.13) Illustrative examples In this section, we will illustrate our method using two characteristic examples of difference equations...

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A MODIFIED QUASI-BOUNDARY VALUE METHOD FOR A CLASS OF ABSTRACT PARABOLIC ILL-POSED PROBLEMS M. pot

Ngày tải lên : 23/06/2014, 00:20

... et Applications, Travaux et Recherches e e e e Math´ matiques, no 15, Dunod, Paris, 1967 e [8] M M Lavrentiev, Some Improperly Posed Problems of Mathematical Physics, Springer Tracts in Natural ... (1.1) and the ﬁnal condition (1.2) (resp., the boundary condition (1.6)) Now, let {Eλ }λ>0 be a spectral measure associated to the operator A in the Hilbert space H, then for all f ∈ H, we can write ... diﬀerential problems, Sibirski˘ Matematicheski˘ Zhurı ı nal 33 (1992), no 2, 125–134, 221 (Russian), translated in Siberian Math J 33 (1992), no 2, 289–298 [10] K Miller, Stabilized quasi-reversibility...

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Radio Occultation Method for Remote Sensing of the Atmosphere and Ionosphere docx

Ngày tải lên : 29/06/2014, 16:20

... restores the field along the straight line z  z0 by use of transformation of the field measured along the tangent РY' to orbital trajectory at point P It is assumed that the straight line z  z0 is ... pseudo-random codes: the basic Р-code with the speed of transmission 10.23 Mb/s and open С/А code with the speed of transmission 1.023 Mb/s Diagrams of transmitting antenna illuminate practically uniformly ...  a  h Let us introduce the altitude h of the arbitrary point C on the ray trajectory and designate a is the earth’s radius,  is the central angle LOG, rg  a  H g , rl  a  H l , and rt...

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