Utilización de servicios no financieros de apoyo a las empresas para contribuir al desarrollo de las Pequeñas y Medianas Empresas (PYMEs) en Tanzania

[ENG] A variety of factors inhibit the development of MSMEs in African countries, which in turn affects entrepreneurship, job creation and economic transformation. Using cross-sectional data from 250 MSMEs in the Dar es Salaam region, we find in most of the examined variables the positive relationship between the use of non-financial business support services (BDS) and the development of MSMEs in the Dar es Salaam region. However, contrary to expectations, building business linkages and mentoring programs recorded negative relationships with MSMEs development. This is related to restricted capacities stemming from the size of MSMEs compared to large companies and deficiencies in the content of mentoring programs. In addition, the discrepancy between BDS demand and supply as well as the low adoption rate of BDS are associated with the inadequate adaptation of BDS to the needs of MSMEs, high service costs and a lack of qualified service providers. Thus, we argue that the provision of BDS to MSMEs should be demand-driven and that institutions should build on the pre-eminent characteristics of MSMEs when designing business support programs. On the other hand, Government efforts to nurture the development of MSMEs through policies and programs should extend to promoting business linkages between MSMEs and large enterprises.[SPA] Diversos factores inhiben el desarrollo de las MIPYMES en los países africanos, lo que a su vez afecta al emprendedurismo, la creación de empleo y la transformación económica. Utilizando datos transversales de 250 PYMEs de la región de Dar es Salaam, encontramos que en la mayoría de las variables examinadas existe una relación positiva entre el empleo de Servicios de Desarrollo Empresarial (SDE) y el desarrollo de las PYMEs en la región de Dar es Salaam. Sin embargo, en contra de lo esperado, la creación de vínculos empresariales y los programas de tutoría registraron relaciones negativas con el desarrollo de las PYMEs. Esto está relacionado con las restricciones de capacidad derivadas del tamaño de las PYMEs en comparación con las grandes empresas, además de las deficiencias en el contenido de los programas de tutoría. También, el desajuste entre la demanda y la oferta de SDE, así como la baja tasa de adopción de los SDE, se explican por: los SDE prestados no se ajustan a las necesidades de las PYMEs, a los elevados costes de los servicios y a la escasez de proveedores de servicios cualificados. Por lo tanto, sostenemos que la prestación de SDE a las PYMEs debe estar orientada a la demanda y que las instituciones deben basarse en las características preeminentes de las PYMEs al diseñar los programas de apoyo empresarial.Por otra parte, los esfuerzos del gobierno para fomentar el desarrollo de las PYMEs a través de políticas y programas deberían extenderse a la promoción de los vínculos empresariales entre las PYMEs y las grandes empresas

Managerial Skills for Micro, Small and Medium-sized Enterprises (MSMEs)

Effective managerial skills can play a key role in the internal governance of micro and small businesses in Africa, enabling them to survive, compete and thrive in a dynamic business environment. However, due to the low absorption capacity, many micro and small entrepreneurs and managers lack the necessary managerial skills. We collected data from MSMEs owners and managers in Tanzania to examine the managerial skills required and their effect on business performance based on thematic content analysis and regression analysis. The results show that the managerial skills of MSMEs owners and managers have a significantly positive effect on MSMEs performance, in particular, financial management, marketing, human relations, and entrepreneurial skills were crucial skills in running small businesses successfully. However, financial management, marketing and entrepreneurial skills were the main skills gaps for many MSMEs owners and managers, suggesting that education, mentoring, and training in these areas for MSMEs owners and managers need to be strengthened. This study argues that since young people form the majority of the stakeholders running small businesses, targeted policies and strategies to promote entrepreneurship among young people through entrepreneurial learning and experiences can help instil an entrepreneurial mindset, one of the crucial skills in small business management

Measurements of branching fraction ratios and CP-asymmetries in suppressed B^- -> D(-> K^+ pi^-)K^- and B^- -> D(-> K^+ pi^-)pi^- decays

We report the first reconstruction in hadron collisions of the suppressed decays B^- -> D(-> K^+ pi^-)K^- and B^- -> D(-> K^+ pi^-)pi^-, sensitive to the CKM phase gamma, using data from 7 fb^-1 of integrated luminosity collected by the CDF II detector at the Tevatron collider. We reconstruct a signal for the B^- -> D(-> K^+ pi^-)K^- suppressed mode with a significance of 3.2 standard deviations, and measure the ratios of the suppressed to favored branching fractions R(K) = [22.0 \pm 8.6(stat)\pm 2.6(syst)]\times 10^-3, R^+(K) = [42.6\pm 13.7(stat)\pm 2.8(syst)]\times 10^-3, R^-(K)= [3.8\pm 10.3(stat)\pm 2.7(syst]\times 10^-3, as well as the direct CP-violating asymmetry A(K) = -0.82\pm 0.44(stat)\pm 0.09(syst) of this mode. Corresponding quantities for B^- -> D(-> K^+ pi^-)pi^- decay are also reported.Comment: 8 pages, 1 figure, accepted by Phys.Rev.D Rapid Communications for Publicatio

Performance of CMS muon reconstruction in pp collision events at sqrt(s) = 7 TeV

The performance of muon reconstruction, identification, and triggering in CMS has been studied using 40 inverse picobarns of data collected in pp collisions at sqrt(s) = 7 TeV at the LHC in 2010. A few benchmark sets of selection criteria covering a wide range of physics analysis needs have been examined. For all considered selections, the efficiency to reconstruct and identify a muon with a transverse momentum pT larger than a few GeV is above 95% over the whole region of pseudorapidity covered by the CMS muon system, abs(eta) < 2.4, while the probability to misidentify a hadron as a muon is well below 1%. The efficiency to trigger on single muons with pT above a few GeV is higher than 90% over the full eta range, and typically substantially better. The overall momentum scale is measured to a precision of 0.2% with muons from Z decays. The transverse momentum resolution varies from 1% to 6% depending on pseudorapidity for muons with pT below 100 GeV and, using cosmic rays, it is shown to be better than 10% in the central region up to pT = 1 TeV. Observed distributions of all quantities are well reproduced by the Monte Carlo simulation.Comment: Replaced with published version. Added journal reference and DO

Performance of CMS muon reconstruction in pp collision events at sqrt(s) = 7 TeV

The performance of muon reconstruction, identification, and triggering in CMS has been studied using 40 inverse picobarns of data collected in pp collisions at sqrt(s) = 7 TeV at the LHC in 2010. A few benchmark sets of selection criteria covering a wide range of physics analysis needs have been examined. For all considered selections, the efficiency to reconstruct and identify a muon with a transverse momentum pT larger than a few GeV is above 95% over the whole region of pseudorapidity covered by the CMS muon system, abs(eta) < 2.4, while the probability to misidentify a hadron as a muon is well below 1%. The efficiency to trigger on single muons with pT above a few GeV is higher than 90% over the full eta range, and typically substantially better. The overall momentum scale is measured to a precision of 0.2% with muons from Z decays. The transverse momentum resolution varies from 1% to 6% depending on pseudorapidity for muons with pT below 100 GeV and, using cosmic rays, it is shown to be better than 10% in the central region up to pT = 1 TeV. Observed distributions of all quantities are well reproduced by the Monte Carlo simulation.Comment: Replaced with published version. Added journal reference and DO

X-ray emission from the Sombrero galaxy: discrete sources

We present a study of discrete X-ray sources in and around the bulge-dominated, massive Sa galaxy, Sombrero (M104), based on new and archival Chandra observations with a total exposure of ~200 ks. With a detection limit of L_X = 1E37 erg/s and a field of view covering a galactocentric radius of ~30 kpc (11.5 arcminute), 383 sources are detected. Cross-correlation with Spitler et al.'s catalogue of Sombrero globular clusters (GCs) identified from HST/ACS observations reveals 41 X-rays sources in GCs, presumably low-mass X-ray binaries (LMXBs). We quantify the differential luminosity functions (LFs) for both the detected GC and field LMXBs, whose power-low indices (~1.1 for the GC-LF and ~1.6 for field-LF) are consistent with previous studies for elliptical galaxies. With precise sky positions of the GCs without a detected X-ray source, we further quantify, through a fluctuation analysis, the GC LF at fainter luminosities down to 1E35 erg/s. The derived index rules out a faint-end slope flatter than 1.1 at a 2 sigma significance, contrary to recent findings in several elliptical galaxies and the bulge of M31. On the other hand, the 2-6 keV unresolved emission places a tight constraint on the field LF, implying a flattened index of ~1.0 below 1E37 erg/s. We also detect 101 sources in the halo of Sombrero. The presence of these sources cannot be interpreted as galactic LMXBs whose spatial distribution empirically follows the starlight. Their number is also higher than the expected number of cosmic AGNs (52+/-11 [1 sigma]) whose surface density is constrained by deep X-ray surveys. We suggest that either the cosmic X-ray background is unusually high in the direction of Sombrero, or a distinct population of X-ray sources is present in the halo of Sombrero.Comment: 11 figures, 5 tables, ApJ in pres

Azimuthal anisotropy of charged particles at high transverse momenta in PbPb collisions at sqrt(s[NN]) = 2.76 TeV

The azimuthal anisotropy of charged particles in PbPb collisions at nucleon-nucleon center-of-mass energy of 2.76 TeV is measured with the CMS detector at the LHC over an extended transverse momentum (pt) range up to approximately 60 GeV. The data cover both the low-pt region associated with hydrodynamic flow phenomena and the high-pt region where the anisotropies may reflect the path-length dependence of parton energy loss in the created medium. The anisotropy parameter (v2) of the particles is extracted by correlating charged tracks with respect to the event-plane reconstructed by using the energy deposited in forward-angle calorimeters. For the six bins of collision centrality studied, spanning the range of 0-60% most-central events, the observed v2 values are found to first increase with pt, reaching a maximum around pt = 3 GeV, and then to gradually decrease to almost zero, with the decline persisting up to at least pt = 40 GeV over the full centrality range measured.Comment: Replaced with published version. Added journal reference and DO

Search for the standard model Higgs boson in the H to ZZ to 2l 2nu channel in pp collisions at sqrt(s) = 7 TeV

A search for the standard model Higgs boson in the H to ZZ to 2l 2nu decay channel, where l = e or mu, in pp collisions at a center-of-mass energy of 7 TeV is presented. The data were collected at the LHC, with the CMS detector, and correspond to an integrated luminosity of 4.6 inverse femtobarns. No significant excess is observed above the background expectation, and upper limits are set on the Higgs boson production cross section. The presence of the standard model Higgs boson with a mass in the 270-440 GeV range is excluded at 95% confidence level.Comment: Submitted to JHE

Combined search for the quarks of a sequential fourth generation

Results are presented from a search for a fourth generation of quarks produced singly or in pairs in a data set corresponding to an integrated luminosity of 5 inverse femtobarns recorded by the CMS experiment at the LHC in 2011. A novel strategy has been developed for a combined search for quarks of the up and down type in decay channels with at least one isolated muon or electron. Limits on the mass of the fourth-generation quarks and the relevant Cabibbo-Kobayashi-Maskawa matrix elements are derived in the context of a simple extension of the standard model with a sequential fourth generation of fermions. The existence of mass-degenerate fourth-generation quarks with masses below 685 GeV is excluded at 95% confidence level for minimal off-diagonal mixing between the third- and the fourth-generation quarks. With a mass difference of 25 GeV between the quark masses, the obtained limit on the masses of the fourth-generation quarks shifts by about +/- 20 GeV. These results significantly reduce the allowed parameter space for a fourth generation of fermions.Comment: Replaced with published version. Added journal reference and DO