Selection of dominant multi-exciton transitions in disordered linear J-aggregates

We show that the third-order optical response of disordered linear J-aggregates can be calculated by considering only a limited number of transitions between (multi-) exciton states. We calculate the pump-probe absorption spectrum resulting from the truncated set of transitions and show that, apart from the blue wing of the induced absorption peak, it agrees well with the exact spectrum.Comment: 8 pages, 2 figures, accepted to Journal of Luminescenc

CBT in Primary Care

This is a community improvement project designed to address the growing need for and shortage of mental health care in Vermont. The project focuses on creating a brief training tool and guide for primary care physicians to be able to incorporate cognitive behavioral therapy in their practice

PROSPECTIVE NURSING STUDENTS’ PERCEPTIONS OF THE IMPORTANCE OF NUTRITION LITERACY: A TRANSCENDENTAL PHENOMENOLOGICAL STUDY

Proper nutrition is essential to the prevention of chronic diseases such as cancer, heart disease, and diabetes. It is also important during the recovery period from disease as well as in the maintenance of general good health. In many health care settings, nurses are the initial health care provider with whom patients have contact. All forms of literacy require a solid foundation in fundamental literacy concepts that must be reinforced to fully develop content-specific literacy, such as nutrition literacy. Nutrition literacy is defined as the extent to which nutrition information is acquired, processed, comprehended, and applied in ways that benefit human health. Nurses are integral members of the health care team and should receive proper nutrition education. In light of the key role nutrition plays in health and disease, it is imperative during the early assessment of patients to properly evaluate them with consideration of their nutritional health. Accordingly, nurses should have a solid foundation in fundamental literacy concepts as well as nutrition literacy and possess and understand both fundamental and advanced nutrition concepts and be able to communicate this information to patients. The purpose of this qualitative transcendental phenomenological study was to explore prospective nursing students’ perceptions of the importance of nutrition literacy related to the field of nursing and whether they would be sufficiently prepared to address nutrition issues in a clinical setting. All participants were seeking admission to a Bachelor of Science in Nursing (BSN) program that would result in eligibility for registered nurse (RN) certification. A semi-structured interview protocol involving the incorporation of open-ended questions was employed to collect information regarding the participants’ life experiences with nutrition and nursing. Additionally, a questionnaire was used to collect participant demographic information. The findings of the study indicate prospective nursing students believe nutrition is a vital component of health care delivery and should be an integral part of nutrition education to prepare nutritionally-literate nurses for clinical practice

Two-hundred inch multi-cell /pressure test/

Multi-cell tank configuration stress data and discontinuity effects from pressure test

Type-II super-Backlund transformation and integrable defects for the N=1 super sinh-Gordon model

A new super-Backlund transformation for the N=1 supersymmetric sinh-Gordon equation is constructed. Based on this construction we propose a type-II integrable defect for the supersymmetric sinh-Gordon model consistent with this new transformation through the Lagrangian formalism. Explicit expressions for the modified conserved energy, momentum and supercharges are also computed. In addition, we show for the model that the type-II defect can also been regarded as a pair of fused defects of a previously introduced type. The explicit derivation of the associated defect matrices is also presented as a necessary condition for the integrability of the model.Comment: Latex 31 pages. Version accepted for publicatio

N=1 super sinh-Gordon model with defects revisited

The Lax pair formalism is considered to discuss the integrability of the N=1 supersymmetric sinh-Gordon model with a defect. We derive associated defect matrix for the model and construct the generating functions of the modified conserved quantities. The corresponding defect contributions for the modified energy and momentum of the model are explicitly computed.Comment: Latex 26 page

30-nm wavelength conversion at 10 Gbit/s by four-wave mixing in a semiconductor optical amplifier

Four-wave mixing (FWM) in semiconductor optical amplifiers (SOAs) is currently the only available strictly transparent wavelength-conversion technique, which is not penalized by phase matching. The span of the conversion is limited primarily by conversion efficiency and signal-to-noise (SNR) issues, both of which are expected to improve with the use of longer SOAs. In this paper, we demonstrate significantly enhanced performance of long converters in a system experiment at 10 Gbit/s. The experiment shows for the first time, to our knowledge, that FWM wavelength down-conversions can span the full gain bandwidth of erbium-doped fiber amplifiers

Defects in the supersymmetric mKdV hierarchy via Backlund transformations

The integrability of the ${\cal N}=1$ supersymmetric modified Korteweg de-Vries (smKdV) hierarchy in the presence of defects is investigated through the construction of its super B\"acklund transformation. The construction of such transformation is performed by using essentially two methods: the B\"acklund-defect matrix approach and the superfield approach. Firstly, we employ the defect matrix associated to the hierarchy which turns out to be the same for the supersymmetric sinh-Gordon (sshG) model. The method is general for all flows and as an example we derive explicitly the B\"acklund equations in components for the first few flows of the hierarchy, namely $t_3$ and $t_5$. Secondly, the supersymmetric extension of the B\"acklund transformation in the superspace formalism is constructed for those flows. Finally, this super B\"acklund transformation is employed to introduce type I defects for the supersymmetric mKdV hierarchy. Further integrability aspects by considering modified conserved quantities are derived from the defect matrix.Comment: 40 pages. Some comments and references added. Version accepted for publication in JHE