Bari-Markus property for Riesz projections of 1D periodic Dirac operators

The Dirac operators Ly = i ((1)(0) (0)(-1))dy/dx + v(x)y, y = ((y1)(y2)), x is an element of[0, pi], with L-2-potentials v(x) = ((0)(Q(x)) (P(x))(0)), P, Q is an element of L-2([0, pi]), considered on [0, pi] with periodic, antiperiodic or Dinchlet boundary conditions (bc), have discrete spectra, and the Riesz projections, S-N = 1/2 pi iota integral(vertical bar z vertical bar=N - 1/2) (z - L-bc)(-1) dz. p(n) = 1/2 pi iota integral(vertical bar z-n vertical bar=1/2) (z - L-bc)(-1) dz are well-defined for vertical bar n vertical bar >= N if N is sufficiently large. It is proved that Sigma(vertical bar n vertical bar>N) parallel to P-n - P-n(0)parallel to(2) < infinity, where P-n(0), n is an element of Z, are the Riesz projections of the free operator. Then, by the Ban Markus criterion, the spectral Riesz decompositions f = SN + Sigma(vertical bar n vertical bar>N) P(n)f, for all f is an element of L-2 converge unconditionally in L-2. (C) 2010 WILEY-VCH Verlag GmbH & Co KGaA, Weinho

Probing EWSB through vector boson scattering at the LHC

We estimate the power of the LHC in probing effects of strongly-interacting symmetry breaking sector through vector boson scattering in a complete partonic analysis.Comment: Talk given at IFAE 2009, Bari, Italy, 15-17 April 200

Local strategic networks and policies in European ICT clusters - the cases of Amsterdam, Bari, Dublin and Oulu

Regional interfirm networks are believed to be a vehicle for innovation and regional economic growth. From this perspective, local and regional governments are increasingly trying to promote these types of networks. This article discusses the relation between strategic networks and local development. It focuses on the role of local institutions that support strategic networking in ICT clusters in a number of European cities. It also discusses and analyses the way local and national governments try to influence local strategic networks in this sector. Our case studies are Amsterdam, Bari, Dublin, and Oulu.strategic networks policies ICT cluster casestudy Amsterdam Bari Dublin Oulu

Screening of Different Tomato Varieties in Saline Areas of Bangladesh

A field study was conducted to screen out a number of Bangladeshi Tomato (Lycopersicon esculentum L.) varieties for salinity tolerance. Three levels of salinity were 2.0-4.0 dS m-1, 4.1-8.0 dS m-1 and 8.1-12.0 dS m-1. Significant varietal and or salinity treatment effects were registered on plant height, leaf area, plant growth, yield, dry matter plant-1, Na+ and Claccumulation in tomato tissues. Variety BARI Tomato 14, BARI Hybrid Tomato 5 and BARI Tomato 2 consistently showed superior biological activity at moderate salinity (4.1-8.0 dS m-1), based on dry matter biomass production thus displaying relatively greater adaptation to salinity. Under saline condition, all plant parameters of tomato varieties were reduced compared to the control except number of fruits of BARI Tomato 14, BARI Hybrid Tomato 5 and BARI Tomato 2. Thus, BARI Tomato 14, BARI Hybrid Tomato 5 and BARI Tomato 2 can be regarded as a breeding material for development of new tomato varieties for tolerance to salinity in saline areas of Bangladesh. DOI: http://dx.doi.org/10.3329/ijarit.v2i1.13989 Int. J. Agril. Res. Innov. &amp; Tech. 2 (1): 13-18, June, 201

Influence of sowing date on the growth and yield performance of wheat (Triticum aestivum L.) varieties

A field study was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh to investigate the effect of sowing date on the performance of wheat varieties. The experiment, laid out in RCBD with three replications, comprised four sowing dates viz.,15 November, 30 November, 15 December and 30 December, and four varieties of wheat viz. BARI Gom 25, BARI Gom 26, BARI Gom 27 and Shatabdi. The results suggested that the highest plant population m-2&nbsp;(58.17) and the highest plant height (89.59 cm) were obtained in 15 November sowing. BARI Gom 25 produced the highest plant population m-2&nbsp;(50.33) and the highest plant height (86.32) while the same trend was observed in the interaction of BARI Gom 25×15 November sowing. The lowest performance of these two parameters was observed in the interaction of Shatabdi × 30 December sowing. The highest grain yield (2.18 ha-1) was found in the interaction of BARI Gom 25 × 15 November sowing as contributed by its highest number of effective tillers hill-1&nbsp;(4.73), the highest number of spikelets spike-1&nbsp;(17.77), the highest number of grains spike-1(37.89) and the highest 1000-grain weight (29.99g). The individual effect of the BARI Gom 25 and 15 November sowing on those parameters was also observed as the highest. The lowest grain yield (1.5 t ha-1) was found in the interaction of Shatabdi × 30 December sowing because of the poor performance of the yield components of this treatment combination. The variety BARI Gom 25 and BARI Gom 26 both gave better yield when sown on 15 November. Therefore, BARI Gom 25 and BARI Gom 26 should be sown on 15 November rather than late sowing to obtain better performance and grain yield of wheat

The Prolongation Problem for the Heavenly Equation

We provide an exact regular solution of an operator system arising as the prolongation structure associated with the heavenly equation. This solution is expressed in terms of operator Bessel coefficients.Comment: 9 pages, Proc. SIGRAV Conference (Bari 1998

Effect of different sowing dates on yield of tomato genotypes

The experiment was conducted at Agricultural Research Station, Thakurgaon, Bangladesh during October 2009 to March 2010 to observe the effect of sowing dates on yield of tomato genotypes. Three sowing dates viz. October 1, October 15 and October 30 were considered as factor A and tomato variety viz., BARI Tomato-2, BARI Tomato-3, BARI Tomato-4, BARI Tomato-9 and BARI Hybrid Tomato-4 considered as factor B. The experiment was laid out in RCBD (Factorial) with three replications. Early flowering (52.40 days) as well as early fruit harvesting (119.13 days) was occurred in October 1 sowing, where as sowing on October 30 resulted in delayed flowering (71.73 days) and fruit harvesting (140.67 days), respectively. Number of fruits per plant was also the highest (27.40) in October 1 sowing and the lowest (13.73) was in October 30 sowing. Seed sowing of October 1 was found better in respect of yield (74.75 tha-1) compared to October 15 (58.55 tha-1) and October 30 (24.60 tha-1) sowing. Among the variety, BARI Tomat-2 produced the highest (68.12 tha-1) marketable yield followed by BARI Tomato-9 (56.16 tha-1) and BARI Tomato-3 while BARI Tomato-4 gave the lowest (36.91 tha-1) marketable yield. DOI: http://dx.doi.org/10.3329/ijarit.v4i1.21090 Int. J. Agril. Res. Innov. &amp; Tech. 4 (1): 40-43, June, 201

Hydroponic and in vitro screening of wheat varieties for salt-tolerance

Salt-tolerant wheat cultivars are essential for sustainable wheat production and global food security. The present study aimed to establish a reliable screening protocol as well as successfully isolated the potential salt-tolerant wheat varieties by discerning morpho-physiological parameters with multivariate analysis. Seventeen wheat varieties were evaluated at 0, 12, 15 and 18 dSm-1 salinity levels in a hydroponic culture system at the seedling stage. Moreover, in vitro callusing responses of four selected varieties were determined to clarify the salt tolerance capability at 0, 9, 12 and 15 dSm-1 salt treatments. The seedling growth of most wheat varieties was highly interrupted and reduced by the toxic effects of salinity, however, some varieties such as BARI Gom-32, BARI Gom-33, BARI Gom-31, BARI Gom-30, and BARI Gom-28 showed the lowest reduction under all salinity stress conditions. The total salt tolerance index (TSTI) showed that the cultivar BARI Gom-33 was the most salt-tolerant followed by BARI Gom-32 and BARI Gom-30 whereas BARI Gom-25 was identified as the most sensitive. These results were strongly supported by the principal component analysis (PCA) and Ward’s Methods Euclidean based clustering. In vitro results revealed that the lowest reduction of callus induction was recorded in BARI Gom-33 which might show the greatest tolerance to salinity by improving morpho-physiological characteristics against salt stress. Therefore, the identified genotypes might be employed as donor parents to develop salt-tolerant and high-yielding cultivars in the wheat breeding programme