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51.
Kizmaz [13] studied the difference sequence spaces e∞(△), c(△), and c0(△).Several article dealt with the sets of sequences of m-th order difference of which are bounded, convergent, or convergent to zero. Altay and Basar [5] and Altay, Basar, and Mursaleen [7] introduced the Euler sequence spaces eτ0, eτ0, andeτ∞, respectively. The main purpose of this article is to introduce the spaces eτ0(△(m)), eτc(△(m)), and eτ∞(△(m)) consisting of all sequences whose mth order differences are in the Euler spaces eτ0, eτc, and eτ∞, respectively. Moreover, the authors give some topological properties and inclusion relations, and determine the α-, β-, and γ-duals of the spaces eτ0(△(m)), eτc(△(m)), and eτ∞(△(m)), and the Schauder basis of the spaces eτ0(△(m)), eτc(△(m)). The last section of the article is devoted to the characterization of some matrix mappings on the sequence space eτc(△(m)). 相似文献
52.
The interacting boson approximation IBA-1 model space, in which neutron and proton degrees of freedom are not distinguished,
can be considered as a subspace of the IBA-2 model space. Using the microscopic background of the IBA-2 model, a correspondence
can be established between IBA-1 and IBA-2 model space. Since the space of the IBA-1 model can be regarded as a subspace of
the IBA-2 model there is a unique way to ‘Project’ the operators of the IBA-2 model onto those of IBA-1. This projection can
be carried out using theF-spin formalism. In the IBA-2 model, the lowest states are indeed fully symmetric, and using the calculations with the help
of this projection, we explore the energy levels and the electric quadrupole transition probabilitiesB(E2; {ie393-01}) and γ-ray E2/M1 mixing ratios for selected transitions of162, 164, 166, 168, 170Er. Owing to admixtures of non-fully-symmetric states in IBA-2, we renormalized the parameters (ε) and (κ). This is the first time we show that this projection can be applied to some heavier isotopes and the results obtained for162, 164, 166, 168, 170Er isotopes are reasonably in good agreement with the previous experimental values. 相似文献
53.
Dominik Hainzl Jürgen Burhenne Hulusi Barlas Harun Parlar 《Fresenius' Journal of Analytical Chemistry》1995,351(2-3):271-285
Twenty-five pure environmentally relevant toxaphene components have been isolated from photochemically modified technical toxaphene by means of a combination of column chromatography on silica gel and preparative high resolution liquid chromatography. These compounds are 6 chlorinated camphenes (1–3, 5, 7, and 11) and 19 chlorinated bornanes (4, 6, 8–10, 12–16, 18–24, 26, and 27 according to Table 1). Two further chlorobornanes (17 and 25) have been isolated from a highly chlorinated mixture obtained by the excess chlorination of 2-exo,10-dichlorobornane. The structural elucidation of the isolated compounds has been carried out with spectroscopical methods. 相似文献
54.
A highly efficient gain-clamped L-band EDFA with improved noise figure characteristic is demonstrated by simply adding a broadband
C-band FBG in double-pass system. The combination of the FBG and optical circulator has created laser in the cavity for gain
clamping. By adjusting the power combination of pumps 1 and 2, the clamped gain level can be controlled. The amplifier gain
is clamped at 28.1 dB from −40 to −25 dBm with a gain variation of less than 0.5 dB by setting the pumps 1 and 2 at 59.5 and
50.6 mW, respectively. The gain is also flat from 1574 nm to 1604 nm with a gain variation of less than 3 dB. The corresponding
noise figure varies from 5.6 to 7.6 dB, which is 0.8 to 2.6 dB less than those of unclamped amplifier. 相似文献
55.
56.
Soboh Rawan S. M. Al-Masoodi Ahmed H. H. Erman Fuad. N. A. Al-Masoodi Ab. H. H. Arof H. Yasin M. Harun S. W. 《Journal of Russian Laser Research》2022,43(2):193-200
Journal of Russian Laser Research - In this paper, we employ a Zinc Phthalocyanine (ZnPc) organic material to construct a saturable absorber (SA) that is used in a laser cavity to generate... 相似文献
57.
Fiber optic displacement sensor is demonstrated using a multimode fused coupler probe and a concave mirror target. It is observed
that a focal length of the concave mirror make a significant influence to the displacement response, which illustrates three
linear slopes with the second slope peaks at the position that is in vicinity of two times of the focal length. The highest
sensitivity of 0.56 mV/mm is obtained with an infinity focal length and it is decreased as the focal length of the concave
mirror decreases. The widest linear range of approximately 3.3 mm is observed in the third slope region with focal length
of 6.0 mm. The highest linear range obtained with the use of 50:50 coupler. 相似文献
58.
59.
60.
Harun Karsli 《逼近论及其应用》2010,(2):140-152
In the present paper we state some approximation theorems concerning point- wise convergence and its rate for a class of non-convolution type nonlinear integral opera- tors of the form:Tλ(f;x)=B∫AKλ(t,x,f(t))dr,x∈〈a,b〉λλA.In particular, we obtain the pointwise convergence and its rate at some characteristic points x0 off as (x,λ) → (x0, λ0) in LI 〈A,B 〉, where 〈 a,b 〉 and 〈A,B 〉 are is an arbitrary intervals in R, A is a non-empty set of indices with a topology and X0 an accumulation point of A in this topology. The results of the present paper generalize several ones obtained previously in the papers [191-[23] 相似文献