Bose-Einstein Condensation in the presence of an artificial spin-orbit interaction

Bose-Einstein condensation in the presence of a synthetic spin-momentum interaction is considered, focusing on the case where a Dirac or Rashba potential is generated via a tripod scheme. We found that the ground states can be either plane wave states or superpositions of them, each characterized by their unique density distributions.Comment: 5 pages, no figure

Impacts of Ageing Population on Monetary and Exchange Rate Managements in Singapore

This paper finds that the ageing of the population in Singapore will cause a reversal of the current net Central Provident Fund (CPF) contribution into a substantial net CPF withdrawal from 2025, with a peak occurring at 2035. The result is qualitatively robust to changes in the underlying assumptions of the projection. The paper then highlights the implications of this change on the exchange rate and monetary managements in Singapore. First, the Monetary Authority of Singapore (MAS)’s ability to influence Singapore’s exchange rate will be greatly hampered. Second, the net CPF withdrawal will mean sustained liquidity injection into (instead of the usual liquidity drain from) the economy. To avoid unnecessary inflation, the MAS has to find a sustainable way to mob up the excess liquidity due to the sustained liquidity injection. As a simple reversal of MAS’s current foreign exchange market operation will result in substantial shrinkage of foreign reserves, the paper proposes the issuance of government bonds to achieve the dual objectives of mobbing up the excess liquidity and avoiding the shrinkage of foreign reserves. This measure will also help the bond market development in Singapore. Finally, the paper proposes two other measures that can help maintain MAS’s influence on Singapore’s exchange rate to a reasonable level in the longer future.Ageing Population, Central Provident Fund, Exchange Rate System, Monetary Policy, Singapore.

Management of therapist directiveness in integrative psychotherapy: A corpus-assisted discourse study

Healthcare practitioners often face the dilemma of whether to provide advice during medical consultations due to concerns around affecting patients’ autonomy in decision making. Healthcare practitioners’ directiveness in patient–practitioner interactions may influence the success of medical consultations. Research has revealed that healthcare practitioners employ various communicative strategies and linguistic patterns to manage directiveness in medical consultations, such as the notions of likelihood and uncertainty, use of information, and politeness. Nonetheless, few scholars have examined how psychotherapists manage directiveness in counseling or psychotherapy sessions. Directives are inevitable speech acts in counseling or psychotherapy. Therapists may encounter challenges when producing directives, such as preventing clients from seeking their own solutions or clients becoming excessively dependent on therapists’ suggestions. Drawing upon the systems of mood and modality in systemic functional linguistics, this article employs a corpus-assisted approach to investigate therapists’ directives in terms of phraseological patterns, use of modality, and corresponding interpersonal meanings. Results reveal that therapists tend to manage directiveness by forming indicative directives and using low-value modulation modality. This article is the first corpus-assisted study to contribute to an understanding of therapist directiveness in psychotherapy from a lexico-grammatical perspective.