Transfer of knowledge of the structural components of the model Q400 and Global Express: the case of Aerospace Bombardier, Querétaro

The aim of this paper is to analyze the knowledge transfer in the production of structural components of two aircraft:Q400 and Global Express of Bombardier Aerospace Company, Querétaro. Bombardier Aerospace is a pioneer company in the aviation sector in Mexico, and the third largest civil aircraft manufacturer. In 2005, Bombardier decided to invest in Mexico, creating Bombardier Aerospace de Mexico S. A. C. V. and transferring production lines from Japan and Toronto to Queretaro. The relocation strategy of both plants aims to reduce modular and general production costs facing other competitors. The relocation has been supported by the State Government funds, through a trust and the creation of Queretaro aerospace cluster. Among various benefits, the State of Queretaro donated seventy-eight acres of land where the Queretaro International Airport (QIA) and a training centre will be built to promote the development of this sector. The interest in this research is to analyze and describe the transfer of knowledge to the production of structural components of both aircraft models, thanks to the results of productivity and internal and external factors which have contributed along with this transfer

On the design of education conditional cash transfer programs and non education outcomes: the case of teenage pregnancy

We investigate the effect of education Conditional Cash Transfer programs (CCTs) on teenage pregnancy. Our main concern is with how the size and sign of the effect may depend on the design of the program. Using a simple model we show that an education CCT that conditions renewal on school performance reduces teenage pregnancy; the program can increase teenage pregnancy if it does not condition on school performance. Then, using an original data base, we estimate the causal impact on teenage pregnancy of two education CCTs implemented in Bogot´a (Subsidio Educativo, SE, and Familias en Acci´on, FA); both programs differ particularly on whether school success is a condition for renewal or not. We show that SE has negative average effect on teenage pregnancy while FA has a null average effect. We also find that SE has either null or no effect for adolescents in all age and grade groups while FA has positive, null or negative effects for adolescents in different age and grade groups. Since SE conditions renewal on school success and FA does not, we can argue that the empirical results are consistent with the predictions of our model and that conditioning renewal of the subsidy on school success crucially determines the effect of the subsidy on teenage pregnancy

El disseny d'uns quaderns de Pr??cticum des de la millora docent i el treball coresponsable per a la transfer??ncia de compet??ncies i el desenvolupament professional. 'El dise??o de unos cuadernos de Pr??cticum desde la mejora docente y el trabajo corresponsable para la transferencia de competencias y el desarrollo profesional'

Resumen basado en el de la publicaci??n

Transfer y generalización de conceptos físicos fundamentales a situaciones de experiencia (descontextualización curricular) : población EGB.

Explorar y analizar la capacidad del niño de tercero, quinto, y séptimo de EGB, para resolver problemas planteados ante situaciones de experiencia real, relacionados con conceptos físicos fundamentales, en los programas escolares y en los proyectos de Didáctica de las Ciencias. Se compone de un total de 932 alumnos: 245 de tercero de EGB, 318 de quinto, y 369 de séptimo, pertenecientes a diversos colegios tanto públicos como privados de Melilla. Diseño ex-post-facto. La exploración se realiza en base a experiencias físicas concretas a los alumnos y sobre las cuales se realizan preguntas. Se pretende medir diez conceptos físicos: longitud, tiempo, velocidad, masa, fuerza, energía mecánica, calor, temperatura, carga y fenómeno de reflexión de la luz. Se estudian la influencia de las variables de extracción social como variables independientes. Siete pruebas exploratorias para medir dichos conceptos. Media y desviaciones típicas. Significatividad estadística, prueba T de Student. Análisis factorial, rotación ortogonal. Paquete BMDP. Diagramas circulares. El nivel de aciertos encontrado en los alumnos está muy por debajo de los programas y previsiones oficiales y por las pautas de la Psicología Evolutiva. El nivel de acierto es superior en los niños de los cursos superiores. Las pruebas exploratorias resultan más válidas cuanto más alto es el nivel de acierto de las respuestas, lo que aparece vinculado al aumento de la edad y curso de escolarización. El conocimiento de los fenómenos físicos por parte de los niños de los cursos más bajos (tercero de EGB), está lejos de una estructuración en conceptos aislados, a pesar de que así aparecen en los programas escolares. Existe una gran falta de familiarización de los niños con instrumentos de exploración, basados en experiencias directas. Las diferencias observadas entre los colegios por la extracción social no se corroboran en los resultados. La calidad de la enseñanza en todos los casos es de escaso nivel. Debe ser a partir del conocimiento y vivencias del niño, respecto a la realidad física que le rodea, desde donde deben plantearse las planificaciones didácticas correspondientes, teniéndose en cuenta, además, las aportaciones de la Física, de la Psicología Evolutiva, de la Didáctica específica y de las legalidades pedagógicas. Fecha finalización tomada del código del documento.

Implementaci??n European Credit Transfer System en un curso de Programaci??n en Ingenier??a

Monogr??fico con el t??tulo: El an??lisis de la interacci??n alumno-profesor: l??neas de investigaci??n. Resumen basado en el de la publicaci??n

Evaluación del transfer : análisis de las propiedades psicométricas de la prueba PEPT.

Resumen tomado de la publicación

Estimating the reliability coefficient of tests in presence of missing values

Resumen tomado de la publicaci??n

Elements del pr??cticum que afavoreixen la transfer??ncia de compet??ncies

Resumen basado en el de la publicaci??n

La transfer??ncia de la formaci?? als sectors de la construcci?? i l???hostaleria

Resumen basado en el de la publicaci??n

Cross-linguistic influence in the acquisition of tense-aspect in L3 English : a proposal for the study of L2 to L3 transfer in the use of English simple past by L1 Italian / L2 Spanish classroom learners

Resumen basado en el de la publicaci??n

La Mejora de la docencia universitaria a través de la trasferencia de buenas prácticas = Improving college teaching through the transfer of good practice

La comunicación presentada forma parte del proyecto excelencia titulado: “Conocimiento y competencia profesional del profesor universitario sobre enseñanza y el aprendizaje en entornos de tecnología avanzada de la información y la comunicación”; que pretendía apoyar , desde la investigación de campo, la mejora de la actividad académica universitaria y difundir a nivel operativo acciones de innovación educativa y del uso de la tecnología avanzada en los procesos de enseñanza-aprendizaje, que permitiesen construir y recopilar el conocimiento profesional docente en la universidad

Electronic couplings and on-site energies for hole transfer in DNA: systematic quantum mechanical/molecular dynamic study

The electron hole transfer (HT) properties of DNA are substantially affected by thermal fluctuations of the π stack structure. Depending on the mutual position of neighboring nucleobases, electronic coupling V may change by several orders of magnitude. In the present paper, we report the results of systematic QM/molecular dynamic (MD) calculations of the electronic couplings and on-site energies for the hole transfer. Based on 15 ns MD trajectories for several DNA oligomers, we calculate the average coupling squares 〈 V2 〉 and the energies of basepair triplets X G+ Y and X A+ Y, where X, Y=G, A, T, and C. For each of the 32 systems, 15 000 conformations separated by 1 ps are considered. The three-state generalized Mulliken-Hush method is used to derive electronic couplings for HT between neighboring basepairs. The adiabatic energies and dipole moment matrix elements are computed within the INDO/S method. We compare the rms values of V with the couplings estimated for the idealized B -DNA structure and show that in several important cases the couplings calculated for the idealized B -DNA structure are considerably underestimated. The rms values for intrastrand couplings G-G, A-A, G-A, and A-G are found to be similar, ∼0.07 eV, while the interstrand couplings are quite different. The energies of hole states G+ and A+ in the stack depend on the nature of the neighboring pairs. The X G+ Y are by 0.5 eV more stable than X A+ Y. The thermal fluctuations of the DNA structure facilitate the HT process from guanine to adenine. The tabulated couplings and on-site energies can be used as reference parameters in theoretical and computational studies of HT processes in DNA

Estimates of electronic coupling for excess electron transfer in DNA

Electronic coupling Vda is one of the key parameters that determine the rate of charge transfer through DNA. While there have been several computational studies of Vda for hole transfer, estimates of electronic couplings for excess electron transfer (ET) in DNA remain unavailable. In the paper, an efficient strategy is established for calculating the ET matrix elements between base pairs in a π stack. Two approaches are considered. First, we employ the diabatic-state (DS) method in which donor and acceptor are represented with radical anions of the canonical base pairs adenine-thymine (AT) and guanine-cytosine (GC). In this approach, similar values of Vda are obtained with the standard 6-31 G* and extended 6-31++ G* basis sets. Second, the electronic couplings are derived from lowest unoccupied molecular orbitals (LUMOs) of neutral systems by using the generalized Mulliken-Hush or fragment charge methods. Because the radical-anion states of AT and GC are well reproduced by LUMOs of the neutral base pairs calculated without diffuse functions, the estimated values of Vda are in good agreement with the couplings obtained for radical-anion states using the DS method. However, when the calculation of a neutral stack is carried out with diffuse functions, LUMOs of the system exhibit the dipole-bound character and cannot be used for estimating electronic couplings. Our calculations suggest that the ET matrix elements Vda for models containing intrastrand thymine and cytosine bases are essentially larger than the couplings in complexes with interstrand pyrimidine bases. The matrix elements for excess electron transfer are found to be considerably smaller than the corresponding values for hole transfer and to be very responsive to structural changes in a DNA stack