A retrospective study assessing the relative clinical value of performing VRA versus ABR on infants between the ages of seven and twelve months

This paper discusses a study to test two methods of hearing screening for infants--visual reinforcement audiometry and auditory brainstem responses.

The value to deaf children of an extra-curricular reading activity

This paper discusses a proposal for extra curricular activities in deaf schools to help promote literacy for hearing impaired children.

Vigencia de La novela ecuatoriana, de Ángel F. Rojas (Dossier: Cuatro narradores del 30, relecturas en su centenario)

Luego de ubicar a Ángel F. Rojas entre los ensayistas de temas literarios de su generación, la autora sustenta la vigencia del crítico lojano. Más allá de que no exista, en el siglo XX, ningún otro estudio de similar alcance sobre la novela ecuatoriana, plantea que los méritos de esta obra radican en los criterios de periodización empleados, en que los juicios emitidos se sustentan en criterios estéticos, y en que jerarquiza las obras de acuerdo a su valor literario, no se trata de crítica impresionista o biografista, ni sesgada negativamente por consideraciones ideológicas. Rojas incluye, entonces, tres rasgos propios de la moderna crítica literaria: el deslinde, el establecimiento de jerarquías y la emisión de juicios sustentados en la literaturidad de las obras. Un buen número de las conclusiones del autor mantiene actualidad, igual ocurre con la significación de muchas de ellas en el canon del país. El texto de Rojas inicia la moderna crítica literaria ecuatoriana, y mantiene su lugar referencial entre los estudios de la novela en este país.

spotlight europe #2012/06 - September 2012: The value of Europe

Do the citizens of the EU actually know what it is worth to them personally? The surveys increasingly suggest that they reject it and regard it with contempt. After living for years in a state of emergency, many people have started to cast doubt on the whole notion of integration, and on the ability of the politicians involved to find meaningful solutions to the crisis.

spotlight europe #2012/06 - September 2012: Der Wert Europas = The value of Europe

No abstract.

An integral equation method for a boundary value problem arising in unsteady water wave problems

In this paper we consider the 2D Dirichlet boundary value problem for Laplace’s equation in a non-locally perturbed half-plane, with data in the space of bounded and continuous functions. We show uniqueness of solution, using standard Phragmen-Lindelof arguments. The main result is to propose a boundary integral equation formulation, to prove equivalence with the boundary value problem, and to show that the integral equation is well posed by applying a recent partial generalisation of the Fredholm alternative in Arens et al [J. Int. Equ. Appl. 15 (2003) pp. 1-35]. This then leads to an existence proof for the boundary value problem. Keywords. Boundary integral equation method, Water waves, Laplace’s

Boundary value problems for third-order linear PDEs in time-dependent domains

We present the extension of a methodology to solve moving boundary value problems from the second-order case to the case of the third-order linear evolution PDE qt + qxxx = 0. This extension is the crucial step needed to generalize this methodology to PDEs of arbitrary order. The methodology is based on the derivation of inversion formulae for a class of integral transforms that generalize the Fourier transform and on the analysis of the global relation associated with the PDE. The study of this relation and its inversion using the appropriate generalized transform are the main elements of the proof of our results.

An interpretation of baroclinic initial value problems: results for simple basic states with nonzero interior PV gradients

In the Eady model, where the meridional potential vorticity (PV) gradient is zero, perturbation energy growth can be partitioned cleanly into three mechanisms: (i) shear instability, (ii) resonance, and (iii) the Orr mechanism. Shear instability involves two-way interaction between Rossby edge waves on the ground and lid, resonance occurs as interior PV anomalies excite the edge waves, and the Orr mechanism involves only interior PV anomalies. These mechanisms have distinct implications for the structural and temporal linear evolution of perturbations. Here, a new framework is developed in which the same mechanisms can be distinguished for growth on basic states with nonzero interior PV gradients. It is further shown that the evolution from quite general initial conditions can be accurately described (peak error in perturbation total energy typically less than 10%) by a reduced system that involves only three Rossby wave components. Two of these are counterpropagating Rossby waves—that is, generalizations of the Rossby edge waves when the interior PV gradient is nonzero—whereas the other component depends on the structure of the initial condition and its PV is advected passively with the shear flow. In the cases considered, the three-component model outperforms approximate solutions based on truncating a modal or singular vector basis.

Living up to the value agenda: the empirical realities of through-life value creation in construction

Current research agendas are increasingly encouraging the construction industry to operate on the basis of 'added value'. Such debates echo the established concept of 'high value manufacturing' and associated trends towards servitization. Within construction, the so-called 'value agenda' draws heavily from the notion of integrated solutions. This is held to be especially appropriate in the context of PFI projects. Also relevant is the concept of service-led projects whereby the project rationale is driven by the client's objectives for delivering an enhanced service to its own customers. Such ideas are contextualized by a consideration of broader trends of privatization and outsourcing within and across the construction industry's client base. The current emphasis on integrated solutions reflects long-term trends within privatized client organizations towards the outsourcing of asset management capabilities. However, such trends are by no means uniform or consistent. An in-depth case study of three operating divisions within a major construction company illustrates that firms are unlikely to reorientate their business in response to the 'value agenda'. In the case of PFI, the tendency has been to establish specialist units for the purposes of winning work. Meanwhile, institutionally embedded operating routines within the rest of the business remain broadly unaffected.