Aproximaci??n a la ense??anza del verbo espa??ol a estudiantes japoneses, con especial atenci??n a algunos de sus aspectos m??s problem??ticos

Resumen basado en el de la publicaci??n

Factors involved in making post-performance judgments in mathematics problem-solving

Resumen tomado de la publicaci??n

G??nesis y problem??tica del funcionariado docente en Espa??a: un aspecto de la pol??tica escolar del siglo XIX

Resumen basado en el de la publicaci??n

La problem??tica de la funci??n directiva en primaria desde posiciones encontradas : los directores frente al profesorado

Resumen tomado de la publicaci??n

Trabajar y evaluar por competencias en Ciencias Sociales en los centros de Educaci??n Secundaria : realidad y problem??tica en la Regi??n de Murcia

Resumen basado en el de la publicaci??n

La problem??tica convivencial en nuestros centros educativos ??qu?? podemos hacer?

Monogr??fico con el t??tulo: 'La problem??tica convivencial en nuestros centros educativos ??qu?? podemos hacer?'

La traducci??n pedag??gica en la ense??anza del espa??ol como lengua extranjera a estudiantes japoneses : propuesta de unidades did??cticas para trabajar algunos aspectos problem??ticos de la ense??anza del verbo

Resumen basado en el de la publicaci??n

Un modelo para el an??lisis de objetos matem??ticos en libros de texto chilenos : situaciones problem??ticas, lenguaje y conceptos sobre probabilidad

Resumen basado en el de la publicaci??n

Ab initio benchmark study for the oxidative addition of CH4 to Pd: importance of basis-set flexibility and polarization

To obtain a state-of-the-art benchmark potential energy surface (PES) for the archetypal oxidative addition of the methane C-H bond to the palladium atom, we have explored this PES using a hierarchical series of ab initio methods (Hartree-Fock, second-order Møller-Plesset perturbation theory, fourth-order Møller-Plesset perturbation theory with single, double and quadruple excitations, coupled cluster theory with single and double excitations (CCSD), and with triple excitations treated perturbatively [CCSD(T)]) and hybrid density functional theory using the B3LYP functional, in combination with a hierarchical series of ten Gaussian-type basis sets, up to g polarization. Relativistic effects are taken into account either through a relativistic effective core potential for palladium or through a full four-component all-electron approach. Counterpoise corrected relative energies of stationary points are converged to within 0.1-0.2 kcal/mol as a function of the basis-set size. Our best estimate of kinetic and thermodynamic parameters is -8.1 (-8.3) kcal/mol for the formation of the reactant complex, 5.8 (3.1) kcal/mol for the activation energy relative to the separate reactants, and 0.8 (-1.2) kcal/mol for the reaction energy (zero-point vibrational energy-corrected values in parentheses). This agrees well with available experimental data. Our work highlights the importance of sufficient higher angular momentum polarization functions, f and g, for correctly describing metal-d-electron correlation and, thus, for obtaining reliable relative energies. We show that standard basis sets, such as LANL2DZ+ 1f for palladium, are not sufficiently polarized for this purpose and lead to erroneous CCSD(T) results. B3LYP is associated with smaller basis set superposition errors and shows faster convergence with basis-set size but yields relative energies (in particular, a reaction barrier) that are ca. 3.5 kcal/mol higher than the corresponding CCSD(T) values

Families of periodic horseshoe orbits in the restricted three-body problem

We compute families of symmetric periodic horseshoe orbits in the restricted three-body problem. Both the planar and three-dimensional cases are considered and several families are found.We describe how these families are organized as well as the behavior along and among the families of parameters such as the Jacobi constant or the eccentricity. We also determine the stability properties of individual orbits along the families. Interestingly, we find stable horseshoe-shaped orbit up to the quite high inclination of 17◦

Using problem-based learning for introducing producer theory and market structure in intermediate microeconomics

This paper shows how instructors can use the problem‐based learning method to introduce producer theory and market structure in intermediate microeconomics courses. The paper proposes a framework where different decision problems are presented to students, who are asked to imagine that they are the managers of a firm who need to solve a problem in a particular business setting. In this setting, the instructors’ role is to provide both guidance to facilitate student learning and content knowledge on a just‐in‐time basis

Are distortion levels a problem with digital signal processing hearing aids and frequency modulation (FM) systems?

The purpose of this study was to examine objective and subjective distortion present when frequency modulation (FM) systems were coupled with four digital signal processing (DSP) hearing aids. Electroacoustic analysis and subjective listening tests by experienced audiologists revealed that distortion levels varied across hearing aids and channels.