A multilevel approach for obtaining locally optimal finite element meshes

In this paper we consider the adaptive finite element solution of a general class of variational problems using a combination of node insertion, node movement and edge swapping. The adaptive strategy that is proposed is based upon the construction of a hierarchy of locally optimal meshes starting with a coarse grid for which the location and connectivity of the nodes is optimized. This grid is then locally refined and the new mesh is optimized in the same manner. Results presented indicate that this approach is able to produce better meshes than those possible by more conventional adaptive strategies and in a relatively efficient manner

The Role of Emotional Overcontrol in the Acceptance of Counselor Training Feedback

Feedback is an essential component of counselor training, making it crucial that students receive and utilize this information effectively. This research was conducted to address the problem of counseling students experiencing difficulty with accepting feedback during the training process. Radically Open Dialectical Behavior Therapy and the concept of emotional overcontrol were used as a lens for exploring the possible correlation between measures of overcontrol and difficulty with accepting feedback within counselor training programs. This research contributed to the literature—much of which has focused on the behaviors of instructors and supervisors in the feedback process—by providing support for the perspective that student traits affect the efficacy of feedback interactions. The research questions were 1) What is the relationship between counseling student emotional control and accepting feedback within the classroom setting? and 2) What is the relationship between counseling student emotional control and accepting feedback within the supervisory relationship? A quantitative design was used, consisting of a survey tool administered to master’s level counseling students. Analysis consisted of correlation and regression analyses, with additional qualitative coding used for three open-ended prompts. Results indicated that measures of overcontrol correlated significantly with features associated with feedback receptivity within the classroom setting. Results indicated that individuals who scored higher on measures of overcontrol were more likely to experience feedback as threatening, more likely to desire privacy in the feedback process, may retain feedback less effectively, and in some cases, may believe feedback is less useful than their non-overcontrolled peers. No significant correlations were found between measures of overcontrol and feedback in the supervisory setting. In the regression analysis, approximately 34% of the variance in sensitivity to feedback within the classroom setting was explained by measures of overcontrol, indicating that this individual student trait is relevant to the efficacy of feedback interactions. Qualitative data suggested that the element of personal relationship was also a relevant variable for determining the degree to which students accepted feedback from instructors and supervisors. Implications for counselor training programs are discussed, including the recommendation that emotional overcontrol be considered when working with students who struggle with training feedback

The Role of Emotional Overcontrol in the Acceptance of Counselor Training Feedback

Feedback is an essential component of counselor training, making it crucial that students receive and utilize this information effectively. This research was conducted to address the problem of counseling students experiencing difficulty with accepting feedback during the training process. Radically Open Dialectical Behavior Therapy and the concept of emotional overcontrol were used as a lens for exploring the possible correlation between measures of overcontrol and difficulty with accepting feedback within counselor training programs. This research contributed to the literature—much of which has focused on the behaviors of instructors and supervisors in the feedback process—by providing support for the perspective that student traits affect the efficacy of feedback interactions. The research questions were 1) What is the relationship between counseling student emotional control and accepting feedback within the classroom setting? and 2) What is the relationship between counseling student emotional control and accepting feedback within the supervisory relationship? A quantitative design was used, consisting of a survey tool administered to master’s level counseling students. Analysis consisted of correlation and regression analyses, with additional qualitative coding used for three open-ended prompts. Results indicated that measures of overcontrol correlated significantly with features associated with feedback receptivity within the classroom setting. Results indicated that individuals who scored higher on measures of overcontrol were more likely to experience feedback as threatening, more likely to desire privacy in the feedback process, may retain feedback less effectively, and in some cases, may believe feedback is less useful than their non-overcontrolled peers. No significant correlations were found between measures of overcontrol and feedback in the supervisory setting. In the regression analysis, approximately 34% of the variance in sensitivity to feedback within the classroom setting was explained by measures of overcontrol, indicating that this individual student trait is relevant to the efficacy of feedback interactions. Qualitative data suggested that the element of personal relationship was also a relevant variable for determining the degree to which students accepted feedback from instructors and supervisors. Implications for counselor training programs are discussed, including the recommendation that emotional overcontrol be considered when working with students who struggle with training feedback

Physical Properties of Denture Base Resins Potentially Resistant to \u3cem\u3eCandida\u3c/em\u3e Adhesion

Purpose: The addition of anionic charge on denture base resins has been shown to inhibit Candida albicans adhesion and to facilitate adsorption of salivary defense molecules. The aim of this study was to evaluate the physical properties of a modified denture base resin for denture fabrication. Materials and Methods: Specimens made from heat polymerizing resin Lucitone 199 were used as the control group. The two experimental groups, E-10 and E-20, had 10% and 20%, respectively, of the monomer substituted with an experimental phosphate-containing monomer. Flexural strength and modulus, water sorption, solubility, and color stability tests were conducted to ensure compliance with ADA specification No. 12. Water diffusion coefficient into the resins and stainability were also assessed. ANOVA and Scheffé tests were performed for statistical significance. Results: There was an overall decline in all properties with the addition of the experimental phosphate compound. The flexural strength and modulus, water sorption and solubility for E-10, as well as the control were, however, within the ADA specifications. The diffusion coefficients were significantly different (p \u3c 0.05) for the three groups. Staining and color specimens showed no significant difference (p \u3e 0.05) among the three groups. Conclusions: Within the limitations of this study, the physical properties of the phosphate denture base resin at 10% should be suitable for denture fabrication based on the properties assessed

Effect of Phosphate Group Addition on the Properties of Denture Base Resins

Statement of problem Acrylic resins are prone to microbial adherence, especially by Candida albicans. Surface-charged resins alter the ionic interaction between the denture resin and Candida hyphae, and these resins are being developed as a means to reduce microbial colonization on the denture surface. Purpose The purpose of this study was to investigate the physical and mechanical properties of phosphate-containing polymethyl methacrylate resins for their suitability as a denture material. Material and methods Using PMMA with cross-linker (Lucitone 199) as a control, 4 experimental groups containing various levels of phosphate with and without cross-linker were generated. The properties examined were impact strength, fracture toughness, wettability (contact angle), and resin bonding ability to denture teeth. Impact strength was tested in the Izod configuration (n=16), and fracture toughness (n=13) was measured using the single-edge notched bend test. Wettability was determined by calculating the contact angle of water on the material surface (n=12), while ISO 1567 was used for bonding ability (n=12). The data were analyzed by 1- and 2-way ANOVA (α=.05). Results A trend of increased hydrophilicity, as indicated by lower contact angle, was observed with increased concentrations of phosphate. With regard to the other properties, no significant differences were found when compared with the control acrylic resin. Conclusions No adverse physical effect due to the addition of a phosphate-containing monomer was found in the acrylic denture resins. Additional mechanical and physical properties, biocompatibility, and clinical efficacy studies are needed to confirm the in vivo anti-Candida activity of these novel resins

Longitudinal spin-relaxation in nitrogen-vacancy centers in electron irradiated diamond

We present systematic measurements of longitudinal relaxation rates ($1/T_1$) of spin polarization in the ground state of the nitrogen-vacancy (NV$^-$) color center in synthetic diamond as a function of NV$^-$ concentration and magnetic field $B$. NV$^-$ centers were created by irradiating a Type 1b single-crystal diamond along the [100] axis with 200 keV electrons from a transmission electron microscope with varying doses to achieve spots of different NV$^-$ center concentrations. Values of ($1/T_1$) were measured for each spot as a function of $B$.Comment: 4 pages, 8 figure

New supersymmetric quartet of nuclei in the A=190 mass region

We present evidence for a new supersymmetric quartet in the A=190 region of the nuclear mass table. New experimental information on transfer and neutron capture reactions to the odd-odd nucleaus 194 Ir strongly suggests the existence of a new supersymmetric quartet, consisting of the 192,193 Os and 193,194 Ir nuclei. We make explicit predictions for the odd-neutron nucleus 193 Os, and suggest that its spectroscopic properties be measured in dedicated experiments.Comment: 5 pages, 4 figures, updated figures and revised text, Physical Review C, Rapid Communication, in pres