Supersymmetric and Shape-Invariant Generalization for Nonresonant and Intensity-Dependent Jaynes-Cummings Systems

A class of shape-invariant bound-state problems which represent transition in a two-level system introduced earlier are generalized to include arbitrary energy splittings between the two levels as well as intensity-dependent interactions. We show that the couple-channel Hamiltonians obtained correspond to the generalizations of the nonresonant and intensity-dependent nonresonant Jaynes-Cummings Hamiltonians, widely used in quantized theories of laser. In this general context, we determine the eigenstates, eigenvalues, the time evolution matrix and the population inversion matrix factor.Comment: A combined version of quant-ph/0005045 and quant-ph/0005046. 24 pages, LATE

An Algebraic q-Deformed Form for Shape-Invariant Systems

A quantum deformed theory applicable to all shape-invariant bound-state systems is introduced by defining q-deformed ladder operators. We show these new ladder operators satisfy new q-deformed commutation relations. In this context we construct an alternative q-deformed model that preserve the shape-invariance property presented by primary system. q-deformed generalizations of Morse, Scarf, and Coulomb potentials are given as examples

W.A.T.E.R. - a structured approach for training on advanced measurement and experimental research

W.A.T.E.R. stands for Workshop on Advanced measurement Techniques and Experimental Research. It is an initiative started in 2016 in association with the Experimental Methods and Instrumentation (EMI) committee of the International Association for Hydro-Environment Engineering and Research (IAHR) aimed at advancing the use of experimental techniques in hydraulics and fluid mechanics research. It provides a structured approach for the learning and training workshop series to postgraduate students (aiming specifically at doctoral students), young researchers, and professionals with an experimental background in fluid mechanics. It offers an opportunity to learn about state-of-the-art instrumentation and measurement techniques and the latest developments in the field by partnering with manufacturers. W.A.T.E.R. brings together academics, instrumentation manufacturers and public sectors in a structured setting to share knowledge and to learn from good practices. It is about training people who already have a certain knowledge and skill level but who need to go deeper and/or wider in the field of measurement and experimental research

Sustainable development in Portuguese higher education institutions from the faculty perspective

Higher education institutions play a fundamental role and have great responsibility in promoting sustainability and achieving sustainable development goals. It is therefore essential to study the teacher's perceptions of incorporating sustainability since they are responsible for promoting competences and preparing citizens to respond with solutions to future challenges. The aim of this research is to analyse the perceptions of sustainability held by teachers at Portuguese public higher education institutions. A descriptive and exploratory study was conducted by administering an online questionnaire. The sample is made up of 444 teachers from different Portuguese public higher education institutions (54.1% women and 45.9% men). The results show that while most teachers believe higher education institutions promote the integration of sustainability in their activities, only 16% consider that sustainable development is holistically integrated in the institutions' different activities. About 30% of the teachers report that they largely or extensively integrate sustainable development in their curricular units, but only 20% of them state that higher education institutions provide regular or systematic training in SD. Teachers prefer to increase students' sustainable development education through conferences, seminars, or research projects. Almost 90% of teachers are concerned about climate change or the environment, but only 40% or less engage in sustainable development-related activities. Four clusters are also identified, representing teachers' different perceptions of the higher education institutions' promotion of sustainability, teachers' participation in sustainable development issues and concerns about climate change. Although teachers feel that sustainability is starting to be integrated in higher education institutions, this is not done holistically; moreover, differences are found between teachers in polytechnics and universities and between different scientific areas.info:eu-repo/semantics/publishedVersio

Bedload velocity and backscattering strength from mobile sediment bed: A laboratory investigation comparing bistatic versus monostatic acoustic configuration

Despite the many advantages of using active ultrasound sonars, recent studies have shown that the specific acoustic geometry, signal-processing configuration, and complex surface-volume scattering process at the riverbed introduce several uncertainties in bedload estimation. This study presents a comparison of bedload velocity and bottom echo intensity measurements performed by monostatic and bistatic active ultrasound systems. The monostatic configuration is widely applied in the field to measure the apparent velocity at the riverbed with an acoustic current Doppler profiler (ADCP). Two laboratory investigations were conducted in two different hydraulic facilities deploying ADCP Stream Pro, monostatic and bistatic acoustic velocity profilers, manufactured by Ubertone. The bistatic instruments provided more accurate bedload velocity measurements and helped in understanding the acoustic sampling of the monastic systems. The bistatic profiles succeeded in measuring a profile over the active bedload layer, and the monostatic instruments resulted in different bedload velocity estimations depending on the acoustic resolution and sampling. The echo intensity increased in the cells measured within the active bedload layer with respect to the cell measuring the water column above. The cells that sampled the immobile bed surface beneath the bedload layer showed a reduction of the echo intensity compared with the cells above. The acoustic sampling, which combines the measurement volume geometry and internal processing, seems crucial for more accurate outputs. Future research about the use of monostatic instruments in the field should aim to define the best possible setting for the acoustic parameters at a given bedload condition that may be tuned by evaluating the backscattering at the river bottom together with the apparent bedload velocity

Sustainable development in Portuguese higher education institutions from the faculty perspective

Thanks are due to the following entities: (a) We acknowledge financial support to CESAM by FCT/MCTES (UIDP/50017/2020+UIDB/50017/2020+ LA/P/0094/2020), through national funds; (b) We acknowledge financial support to the Life Quality Research Centre by Fundação para a Ciência e Tecnologia (UID/CED/04748/2020), through national funds.Higher education institutions play a fundamental role and have great responsibility in promoting sustainability and achieving sustainable development goals. It is therefore essential to study the teacher's perceptions of incorporating sustainability since they are responsible for promoting competences and preparing citizens to respond with solutions to future challenges. The aim of this research is to analyse the perceptions of sustainability held by teachers at Portuguese public higher education institutions. A descriptive and exploratory study was conducted by administering an online questionnaire. The sample is made up of 444 teachers from different Portuguese public higher education institutions (54.1% women and 45.9% men). The results show that while most teachers believe higher education institutions promote the integration of sustainability in their activities, only 16% consider that sustainable development is holistically integrated in the institutions' different activities. About 30% of the teachers report that they largely or extensively integrate sustainable development in their curricular units, but only 20% of them state that higher education institutions provide regular or systematic training in SD. Teachers prefer to increase students' sustainable development education through conferences, seminars, or research projects. Almost 90% of teachers are concerned about climate change or the environment, but only 40% or less engage in sustainable development-related activities. Four clusters are also identified, representing teachers' different perceptions of the higher education institutions' promotion of sustainability, teachers' participation in sustainable development issues and concerns about climate change. Although teachers feel that sustainability is starting to be integrated in higher education institutions, this is not done holistically; moreover, differences are found between teachers in polytechnics and universities and between different scientific areas.info:eu-repo/semantics/publishedVersio

Are the sustainable development goals being implemented in the Portuguese higher education formative offer?

Purpose. The study aims to examine: (a) the vertical integration of the Sustainable Development Goals (SGDs) in Portuguese public higher education institutions, namely at the level of undergraduate and master´s degrees, and (b) the extent to which Portuguese higher education institutions are preparing for the United Nations call to promote SDGs. Method. A content analysis of the designations and objectives of the 2556 undergraduate and master’s degrees (in 33 Portuguese public higher education institutions) was made to determine whether they promote at least one sustainable development goal. Findings. The results show that: (a) 198 courses directly address at least one SDG; (b) on average, each higher education institution (HEI) has 6 courses that explicitly address at least one SDG; (c) universities have more courses in SDG areas than polytechnics; (d) more master's degrees embrace SDGs than undergraduate degrees; and (e) most of the courses addressing SDGs are from the social sciences and humanities areas and from natural and environmental sciences. Value. This paper serves to raise the awareness of Portuguese higher education institutions of their role and responsibility in furthering sustainable development goals.publishe

Generalized Ladder Operators for Shape-invariant Potentials

A general form for ladder operators is used to construct a method to solve bound-state Schr\"odinger equations. The characteristics of supersymmetry and shape invariance of the system are the start point of the approach. To show the elegance and the utility of the method we use it to obtain energy spectra and eigenfunctions for the one-dimensional harmonic oscillator and Morse potentials and for the radial harmonic oscillator and Coulomb potentials.Comment: in Revte