Mutual impedance of nonplanar-skew sinusoidal dipoles

The mutual impedance of nonplanar-skew sinusoidal dipoles is presented as a summation of several exponential integrals with complex arguments. Mathematical models are developed to show the near-zone field of the sinusoidal dipole. The mutual impedance of coupled dipoles is expressed as the sum of four monopole-mobopole impedances to simplify the analysis procedure. The subroutines for solving the parameters of the dipoles are discussed

Most of the genetic covariation between major depressive and alcohol use disorders is explained by trait measures of negative emotionality and behavioral control

Background Mental health disorders commonly co-occur, even between conceptually distinct syndromes, such as internalizing and externalizing disorders. The current study investigated whether phenotypic, genetic, and environmental variance in negative emotionality and behavioral control account for the covariation between major depressive disorder (MDD) and alcohol use disorder (AUD). Method A total of 3623 members of a national twin registry were administered structured diagnostic telephone interviews that included assessments of lifetime histories of MDD and AUD, and were mailed self-report personality questionnaires that assessed stress reactivity (SR) and behavioral control (CON). A series of biometric models were fitted to partition the proportion of covariance between MDD and AUD into SR and CON. Results A statistically significant proportion of the correlation between MDD and AUD was due to variance specific to SR (men = 0.31, women = 0.27) and CON (men = 0.20, women = 0.19). Further, genetic factors explained a large proportion of this correlation (0.63), with unique environmental factors explaining the rest. SR explained a significant proportion of the genetic (0.33) and environmental (0.23) overlap between MDD and AUD. In contrast, variance specific to CON accounted for genetic overlap (0.32), but not environmental overlap (0.004). In total, SR and CON accounted for approximately 70% of the genetic and 20% of the environmental covariation between MDD and AUD. Conclusions This is the first study to demonstrate that negative emotionality and behavioral control confer risk for the co-occurrence of MDD and AUD via genetic factors. These findings are consistent with the aims of NIMH's RDoC proposal to elucidate how transdiagnostic risk factors drive psychopathology

Metal-Insulator transition in the Generalized Hubbard model

We present the exact ground-state wave function and energy of the generalized Hubbard model, subjected to the condition that the number of double occupied sites is conserved, for a wide, physically relevant range of parameters. For one hole and one double occupied site the existence of the ferromagnetic ground-state is proved which allow one to determine the critical value of the on-site repulsion corresponding to the point of metal-insulator transition. For the one dimensional model the exact solution for special values of the parameters is obtained.Comment: 20 pages, LaTex. Mod.Phys.Lett.B 7 (1993) 1397; Journal of Physics: Condensed Matter (to appear

Sinusoidal reaction formulation for radiation and scattering from conducting surfaces

The piecewise-sinusoidal reaction technique was developed for low-frequency scattering and radiation from perfectly conducting bodies of arbitrary shape. The theory and numerical results for scattering patterns of rectangular plates and radiation patterns of corner-reflector antennas are presented

Improving together : collaboration needs to start with regulators

The regulatory landscape in the UK is changing again. From 1 April 2019 NHS England and NHS Improvement became what is effectively a single organisation with far reaching responsibility for the oversight of the system. The structural features of this change, which will eventually require legislative reform, have been widely debated, not least by those affected by plans for a collaborative approach to improvement in the NHS.12 But there has been less discussion about the style and approach to regulation that might be best suited to drive improvement in the NHS as set out in the long term plan.3 We contend that a major change is required in the way the system interacts with service providers if we are to be successful in developing a new service model for the 21st century

Prosocial voice in the hierarchy of healthcare professionals: the role of emotions after harmful patient safety incidents

Purpose: Supporting and nurturing effective communication between healthcare professionals is vital to protect patients from harm. However, not all forms of employee voice are effective. Fear can lead to defensive voice, while the role of other emotions to drive voice behaviour is less well understood. This paper aims to understand what role the broader range of emotions, including compassion and shame, experienced by healthcare professionals following patient safety incidents (PSI) play in the subsequent enactment of prosocial voice, a positive and other-oriented form of communication. Design/methodology/approach: This study is based on data from a single English NHS hospital: interviews with healthcare professionals involved in PSIs (N = 40), observations at quality and risk committees and meetings (N = 26 h) and review of investigative documents (N = 33). Three recent PSIs were selected for cross-case analysis based upon organisational theory related to professional hierarchy, employee voice and literature on emotions. Findings: Among three cases, the authors found variance in context, emotional experience and voice behaviour. Where professionals feared blame and repercussion, voice was defensive. Meanwhile where they experienced shame and compassion, prosocial voice was enacted to protect patients. Practical implications: Healthcare organisations seeking to foster prosocial voice should: (1) be more considerate of professionals' emotional experiences post-PSI and ensure adequate support for recovery (2) establish norms for professionals to share their struggles with others (3) reward professionals who demonstrate caring behaviour (4) buffer professionals from workplace pressures. Originality/value: The authors’ study highlights how emotional experiences, such as shame and compassion, can mediate blame and defensiveness and lead to the enactment of prosocial voice in the professional hierarchy

Review of an Investigation of Ceramic Coatings for Metallic Turbine Parts and Other High-temperature Applications

No abstract availabl

Distinguishing cancerous from non-cancerous cells through analysis of electrical noise

Since 1984, electric cell-substrate impedance sensing (ECIS) has been used to monitor cell behavior in tissue culture and has proven sensitive to cell morphological changes and cell motility. We have taken ECIS measurements on several cultures of non-cancerous (HOSE) and cancerous (SKOV) human ovarian surface epithelial cells. By analyzing the noise in real and imaginary electrical impedance, we demonstrate that it is possible to distinguish the two cell types purely from signatures of their electrical noise. Our measures include power-spectral exponents, Hurst and detrended fluctuation analysis, and estimates of correlation time; principal-component analysis combines all the measures. The noise from both cancerous and non-cancerous cultures shows correlations on many time scales, but these correlations are stronger for the non-cancerous cells.Comment: 8 pages, 4 figures; submitted to PR