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Abstract Unlike metals where dislocations carry strain singularity but no charge, dislocations in oxide ceramics are characterized by both a strain field and a local charge with a compensating charge envelope. Oxide ceramics with their deliberate engineering and manipulation are pivotal in numerous modern technologies such as semiconductors, superconductors, solar cells, and ferroics. Dislocations facilitate plastic deformation in metals and lead to a monotonous increase in the strength of metallic materials in accordance with the widely recognized Taylor hardening law. However, achieving the objective of tailoring the functionality of oxide ceramics by dislocation density still remains elusive. Here a strategy to imprint dislocations with {100} slip systems and a tenfold change in dislocation density of BaTiO3 single crystals using high‐temperature uniaxial compression are reported. Through a dislocation density‐based approach, dielectric permittivity, converse piezoelectric coefficient, and alternating current conductivity are tailored, exhibiting a peak at medium dislocation density. Combined with phase‐field simulations and domain wall potential energy analyses, the dislocation‐density‐based design in bulk ferroelectrics is mechanistically rationalized. These findings may provide a new dimension for employing plastic strain engineering to tune the electrical properties of ferroics, potentially paving the way for advancing dislocation technology in functional ceramics.

IntroductionWorldwide, the primary care sector played a key role in coping with the challenges of the SARS-CoV-2 pandemic.MethodsThe aim of this study was to explore the resilience of the German primary healthcare system during the second wave of the pandemic from the perspective of identified interface stakeholders, i.e., representatives of hospitals, district offices, and medical associations. Qualitative data from interviews and focus groups were analyzed according to a resilience framework.ResultsThe main findings include a gap in knowledge transfer, unstructured allocation of responsibilities, and a resulting unregulated flow of patients. Social brokers supported care coordination and knowledge transfer. The response to the capacity to cope with uncertainties was slow and chaotic at the system level and heterogeneous at the individual level. Building on previous relationships fostered functioning communication, while competition in primary care was identified as a barrier to resilience.ConclusionImplications for further research and for strengthening the resilience of primary care can be derived based on this study.

Abstract Aim Examine perceptions of nurses who obtained a recognised nursing qualification in Germany about the integration of internationally qualified nurses (IQN) in the German nursing workforce. Design Qualitative interview study. Methods Semi‐structured interviews with 21 state‐qualified nurses who had graduated from a German nursing program were conducted either face‐to‐face or by telephone. Nurses were selected using the purposive sampling method. Additionally, to reach a sufficient sample size, snowball sampling was applied. Each interview was pseudonymized and transcribed. Transcripts were coded according to Qualitative Content Analysis with data structured into themes and sub‐themes. The study was reported according to the Consolidated Criteria for Reporting Qualitative Studies (COREQ) checklist for qualitative research. Results Two main themes including sub‐themes were identified: (a) Enabling Factors to Workplace Integration: motivated nursing team, structured orientation program, support by a preceptor, additional practical skills and specific language training and (b) Barriers to Workplace Integration: lack of language proficiency, cultural differences, othering and racism/discrimination. The findings of the study suggest that working in a diverse workplace can be challenging, it is therefore important for successful integration to recognise not only the experiences of IQN but also the perceptions of nurses who work with internationally qualified peers. No patient or public contribution. Registration number The study has been prospectively registered (27 June 2019) at the German Clinical Trial Register (REDACTED).

Abstract Background Older adults with multimorbidity represent a growing segment of the population. Metrics to assess quality, safety and effectiveness of care can support policy makers and healthcare providers in addressing patient needs. However, there is a lack of valid measures of quality of care for this population. In the MULTIqual project, 24 general practitioner (GP)-reported and 14 patient-reported quality indicators for the healthcare of older adults with multimorbidity were developed in Germany in a systematic approach. This study aimed to select, validate and pilot core sets of these indicators. Methods In a cross-sectional observational study, we collected data in general practices (n = 35) and patients aged 65 years and older with three or more chronic conditions (n = 346). One-dimensional core sets for both perspectives were selected by stepwise backward selection based on corrected item-total correlations. We established structural validity, discriminative capacity, feasibility and patient-professional agreement for the selected indicators. Multilevel multivariable linear regression models adjusted for random effects at practice level were calculated to examine construct validity. Results Twelve GP-reported and seven patient-reported indicators were selected, with item-total correlations ranging from 0.332 to 0.576. Fulfilment rates ranged from 24.6 to 89.0%. Between 0 and 12.7% of the values were missing. Seventeen indicators had agreement rates between patients and professionals of 24.1% to 75.9% and one had 90.7% positive and 5.1% negative agreement. Patients who were born abroad (− 1.04, 95% CI = − 2.00/ − 0.08, p = 0.033) and had higher health-related quality of life (− 1.37, 95% CI = − 2.39/ − 0.36, p = 0.008), fewer contacts with their GP (0.14, 95% CI = 0.04/0.23, p = 0.007) and lower willingness to use their GPs as coordinators of their care (0.13, 95% CI = 0.06/0.20, p

Dislocations are often perceived as a culprit for degradation in functionality. Here, the authors introduce a general framework for engineering dislocations and domain walls and demonstrate its full potential on a ferroelectric BaTiO3 single crystal.

Abstract Background Primary care is a relevant pillar in managing not only individual, but also societal medical crises. The COVID-19 pandemic has demanded a rapid response from primary care with interventions in the health care system. The aim of this paper was to explore the responses of primary care practitioners (PCP) during the early COVID-19 pandemic and to analyze these with a view on the resilience of the primary health care system from the PCPs perspective. Methods Shortly after the first COVID-19 wave (July—October 2020) n = 39, semi-structured telephone interviews were conducted with PCP in practices and at Corona contact points (CCP) in Baden-Wuerttemberg (Germany). Qualitative content analysis was applied, and the evolved categories were related to in a framework for resilience. Results Primary care had an overall strong ability to adapt and show resilience, albeit with wide variance in speed and scope of the responses. When coping with uncertainty, the reasons given by PCPs in favor of opening a CCP mainly involved intrinsic motivation and self-initiative; the reasons against doing so were i.e. the lack of personal protective equipment, problems with space, and worries about organizational burden. A strong association existed between the establishment of a CCP and the use of resources (i.e. existing networks, personal protective equipment, exercising an office of professional political function). Our study predominantly found adaptive aspects for measures taken at medical practices and transformative aspects for setting up outpatient infection centers. PCPs played an important role in the coordination process (i.e. actively transferring knowledge, integration in crisis management teams, inclusion in regional strategic efforts) reaching a high level in the dimensions knowledge and legitimacy. The dimension interdependence repeatedly came into focus (i.e. working with stakeholders to open CCP, interacting among different types of primary care facilities, intersectoral interfaces). A need for regional capacity planning was visible at the time of the interviews. Conclusions The results can be used for practical and research-based institutional and capacity planning, for developing resilience in primary care and for augmentation by perspectives from other stakeholders in the primary health care system.

Abstract Background Patients with multiple long-term conditions often face a variety of challenges arising from the requirements of their health care. Knowledge of perceived treatment burden is crucial for optimizing treatment. In this study, we aimed to create a German version of the Multimorbidity Treatment Burden Questionnaire (MTBQ) and to evaluate its validity. Methods The steps to translate the MTBQ included forward/back translation, cognitive interviews (n = 6) and a pilot test (n = 7). Psychometric properties of the scale were assessed in a cross-sectional survey with primary care patients aged 65 and older with at least 3 long-term conditions (n = 344). We examined the distribution of responses, dimensionality, internal reliability and construct validity. Results Cognitive interviewing and piloting led to minor modifications and showed overall good face validity and acceptability. As expected, we observed a positively skewed response distribution for all items. Reliability was acceptable with McDonald’s omega = 0.71. Factor analysis suggested one common factor while model fit indices were inconclusive. Predefined hypotheses regarding the construct validity were supported by negative associations between treatment burden and health-related quality of life, self-rated health, social support, patient activation and medication adherence, and positive associations between treatment burden and number of comorbidities. Treatment burden was found to be higher in female participants (Mdn 1 = 6.82, Mdn 2 = 4.55; U = 11,729, p = 0.001) and participants with mental health diagnoses (Mdn 1 = 9.10, Mdn 2 = 4.55; U = 3172, p = 0.024). Conclusions The German MTBQ exhibited good psychometric properties and can be used to assess the perceived treatment burden of patients with multimorbidity.

The aim of this paper is to investigate the existence of optimal solutions for control problems involving nonlinear stochastic Schrödinger equations perturbed by a multiplicative fractional Brownian motion. Finite-dimensional approximations and a linearization method are employed and lead to ε-optimal solutions for the considered problems. [ABSTRACT FROM AUTHOR]

Abstract Background The increasing nursing shortages worldwide has focused attention on the need to find more effective ways to recruit and retain nurses. The aim of this study was to gain understanding of factors that keep German nurses in nursing and explore their perceptions of factors that contribute to nurses leaving or staying in the profession. Methods An explorative qualitative study was undertaken at four different hospitals (two university hospitals and two public hospitals) in Baden-Wuerttemberg, a state in South Germany. Semi-structured face-to-face or telephone interviews were conducted with 21 state-qualified nurses who had graduated from a German nursing program. Each interview was pseudonymized and transcribed. Transcripts were coded according to Qualitative Content Analysis with data structured into themes and subthemes. The study was reported according to the Consolidated Criteria for Reporting Qualitative Studies (COREQ) checklist for qualitative research. Results Two themes emerged from the analysis and each theme had several subthemes: a) PUSH FACTORS i.e. factors that may push nurses to consider leaving the profession included limited career prospects, generational barriers, poor public image of nursing, and workplace pressures; b) PULL FACTORS i.e. factors that nurses wished for and could keep them in the profession included professional pride, improved remuneration, recognition of nursing, professionalisation, and improving the image of nursing as a profession. Conclusion The decision to leave or stay in nursing is influenced by a complex range of dynamic push and pull factors. Nurse Managers responsible for stabilizing the workforce and maintaining their health system will continue to have to navigate challenges until working conditions, appropriate wages and career development opportunities are addressed. A key to tackling nursing shortages may be focusing on pull factors and nurse managers listening in particular to the perspectives of junior nurses directly involved in patient care, as giving them opportunity to further develop professionally, reinforcing a strong and supportive workplace relationships, paying an appropriate salary, and improving the public image of nursing profession. Registration number The study has been prospectively registered (27 June 2019) at the German Clinical Trial Register ( DRKS00017465 ).

Abstract Background Inadequate assessment of the severity and urgency of health problems is one of the factors contributing to unnecessary emergency department visits. A software-based instrument for standardized initial assessment (SmED) aims to support healthcare professionals and steer patients to the appropriate source of care. The aim of this study was to evaluate the implementation process of SmED based on the point of view of users in order to facilitate sustainable implementation. Methods A quantitative process evaluation on the basis of a paper-based questionnaire was carried out alongside the implementation of SmED in 26 outpatient emergency care services within 11 federal states in Germany. Healthcare professionals who worked with SmED either at the joint contact points of the outpatient emergency care service and the emergency departments of hospitals ("Joint Counter", German “Gemeinsamer Tresen”) or at the initial telephone contact points of the outpatient emergency care service (116117) were invited to participate in the survey. Results 200 users of SmED completed the questionnaire comprising the five scales: Intervention effectiveness/efficacy, Interprofessional context/occupational Interest, Individual Context, Organisational Framework Conditions, and Medical Context. Several individual characteristics were related to the implementation process of SmED. Female and younger healthcare professionals and participants with less than five years of professional experience tended to evaluate the implementation process as more positive. Factors related to the Individual Context and to the Medical Context were associated with the reported use of SmED (p = 0.004 and 0.041, respectively). Conclusion The involvement of healthcare professionals, particularly more experienced professionals, in the implementation of SmED may help to facilitate sustainable implementation. In addition, training of potential user prior and during the implementation process and the adaption of Organisational Context factors are crucial. Trial registration The study was registered at the German Clinical Trials Register prior to the start of the study (DRKS00017014).

Abstract Background Patients with multimorbidity (here defined as three or more chronic conditions) require constant treatment and care. Furthermore, they have to manage their health and diseases in daily life. Offering support to patients’ medical self-management is an important task of primary care. The aim of this study was to explore, what further support is needed from the perspective of patients’ and primary care practitioners. Methods A qualitative study using individual semi-structed interviews with 17 patients with multimorbidity and 7 practitioners (4 primary care physicians and 3 practice assistants) was conducted in Germany. Data were audio-recorded, pseudonymised and transcribed verbatim. Data analysis was performed using qualitative content analysis to structure data into themes and subthemes. All data were managed and organised in MAXQDA. Results The three broad themes: current status, challenges and further support emerged. Patients reported on unfulfilled needs regarding role or emotional management, like coping with loneliness, loss of independence and, changing habits. The importance of social contact was highlighted by patients and practitioners. Patients articulated further support from their primary care practitioners on coping with the disease. Practitioners’ wished for further support in aspects of social participation, public transport, and community resources. Conclusion Challenges regarding self-management of elderly patients with multimorbidity may be addressed by harnessing social support and community initiatives.