Mechanical properties of some materials used in airplane construction

Since lightness is desirable in airplane construction, greater stresses must be tolerated than in other kinds of construction. It is therefore necessary to have a more accurate knowledge of the greatest stresses that may occur and of the actual properties of the materials used. The Aeronautic Research Laboratories took the limit of elasticity as the basis of the strength calculations. Many tests were made of different steels, woods, aluminum alloys, and fabrics

Protection of wooden airplane parts against moisture by means of varnish

The objects of the experiments herein described were to test the protection afforded by Valspar oil varnish against the absorption of moisture by wooden airplane parts and the consequent changes in their elastic properties and to compare some of the best Dutch varnishes with Valspar

Patient values in physiotherapy practice, a qualitative study

Objectives: Physiotherapy is, like all healthcare professions, relational and value-laden. Patient-centred care, evidence-based practice and value-based practices are concepts in which patient values lie at the heart of high-quality healthcare practices. Nevertheless, physiotherapists have limited awareness of what patient values are in the physiotherapy encounter. The purpose of this study is to explore these patient values. Methods: A qualitative study design using content analysis was used involving 17 adult participants with chronic or recurrent musculoskeletal pain. Data were collected during July 2015–July 2016 in three primary care physiotherapy facilities in Rotterdam, The Netherlands. Two researchers analysed the interviews and derived relevant codes from the data. After an iterative process of comparing, analysing, conceptualizing, and discussing the data, a pre-existing analytic framework was refined in which distinct values were delineated. Results: Emerging patient values were encompassed in three themes, each consisting of two to four elements: (1) values about oneself (uniqueness and autonomy), (2) values regarding actions of the professional (technically skilled professional, conscientious professional, compassionate professional, responsive professional) and (3) values regarding interactions between patients and the professionals (partnership and empowerment). Conclusion: This study emphasizes the need for discussing patient values in the clinical encounter and helps physiotherapists to understand what deems to be important for patients with musculoskeletal pain in physiotherapy practice. The results of this study contribute to the existing body of knowledge of this important aspect of the quality of physiotherapy practice and may inspire clinicians and educators to actively implement patient values in clinical practice and the physiotherapy education

Further development in measuring communicative participation: identifying items to extend the applicability of the communicative participation item bank

Background: The ability to communicate is a prerequisite for participation in today’s society. To measure participation in adults with communication disorders, the Communicative Participation Item Bank (CPIB) was developed in 2006. Since then, several new PROMs have been developed to measure communication and the impact of communication disorders on participation. Moreover, the CPIB items do not all appear to be relevant to certain populations with communication problems and context of communicative participation is changing rapidly, given the increased use of digital communication forms. The purpose of this study was to identify new PROMs developed since 2006 that aim to measure (aspects of) communication, in order to select items that are suitable for expanding the Communicative Participation Item Bank to make the item bank more widely applicable (e.g., to the hearing-impaired population) and tailored to the current societal context. Methods: Medline and Embase were used to search for PROMs that aim to measure (aspects of) communication. Each new PROM as well as the CPIB, was evaluated to determine to what extent it contains items that measure communicative participation and to what extent these items capture all communicative participation domains by linking each item to the ICF Activities and Participation domains. Results: This study identified 31 new PROMs, containing 391 items that were labelled as measuring communicative participation. The majority of the 391 items measure aspects of ICF Activities and Participation domain ‘communication’, followed by the domain ‘interpersonal interactions and relationships’. The other ICF Activity and Participation domains were less often addressed. Analysis of the CPIB showed that items do not cover all domains of participation as defined in the ICF, such as the ‘major life areas’ domain. Conclusions: We found a potential pool of 391 items measuring communicative participation that could be considered for extending the CPIB. We found items in domains that are already present in the CPIB, but also items that relate to new domains, such as an item on talking with customers or clients for the ‘major life areas’ domain. Inclusion of new items in other domains would benefit the comprehensiveness of the item bank

Measuring quality of life in Dutch people with aphasia: development and psychometric evaluation of the SAQOL-39NL

Background: Cross-cultural adaptation of health-related quality of life (HRQL) scales is useful as it allows comparisons of therapy outcomes across different countries to be drawn. Aims: To adapt the English Stroke and Aphasia Quality of Life—39 item generic stroke scale (SAQOL-39g) into Dutch. To investigate the psychometric properties (acceptability, internal consistency, test–retest reliability and construct validity) of the Dutch version (SAQOL-39NL). Methods & Procedures: Established guidelines for cross-cultural adaptation of self-report measures were followed. Individuals with chronic aphasia were recruited from six centres in The Netherlands. Participants completed the SAQOL-39NL and a visual analogue scale on HRQL in an interview format with an aphasia specialist speech and language therapist. Outcomes & Results: The cross cultural adaptation resulted in a consensus version of the SAQOL-39NL, which participants (n = 13) felt was informative and of value in assessing the impact of stroke on their lives. The SAQOL-39NL was acceptable (no missing data; no floor or ceiling effects) to people with chronic aphasia (n = 47). Internal consistency (Cronbach’s alpha = 0.89 for scale; 0.84–0.91 for domains) and test–retest reliability were excellent (ICC = 0.90 for scale, 0.70–0.93 for domains). Internal validity (moderate intercorrelations between domains) and convergent validity (r = 0.45) were good. Conclusions: The SAQOL-39NL is a psychometrically sound measure of HRQL for Dutch speaking people with aphasia. As is common with new measures, its psychometric properties need to be evaluated further; and its appropriateness as a clinical outcome measure needs to be determined. Yet, the SAQOL-39NL is a promising new measure for use in clinical practice, audit and research

A systematic review exploring characteristics of youth with severe and enduring mental health problems (SEMHP)

A small group of youth and emerging adults deals with severe and enduring mental health problems (SEMHP). Current mental health care struggles to recognize and treat this group timely and adequately, leaving these youth between the cracks of the system. A first step to improve care for this group is to gain a deeper understanding of the characteristics of youth with SEMHP. Therefore, this study aimed at reviewing current literature about this target group and what is known so far about their characteristics. We included 39 studies with a focus on youth aged 12-25 years with SEMHP. After critical appraisal, a content analysis and in-depth thematic analysis were conducted. According to the included studies, youth with SEMHP were characterized by severe distress and recurrent comorbid mental health problems, with pervasive suicidality. Further, underlying trauma, family conflicts, peer rejection, deep feelings of hopelessness, and psychosocial malfunctioning characterized SEMHP. It was described that for youth with SEMHP a pervasive pattern of dysfunction in multiple domains is present leading to a detrimental impact. Subsequently, this pattern exerts a reciprocal influence on the mental health problems, causing a vicious circle further worsening SEMHP. Our findings emphasize the need for a holistic approach and to look beyond the traditional classification system in order to meet the needs of these youth with wide-ranging comorbid mental health problems.New methods for child psychiatric diagnosis and treatment outcome evaluatio

Patient experiences: a systematic review of quality improvement interventions in a hospital setting

Purpose: In the era of value-based healthcare, one strives for the most optimal outcomes and experiences from the perspective of the patient. So, patient experiences have become a key quality indicator for healthcare. While these are supposed to drive quality improvement (QI), their use and effectiveness for this purpose has been questioned. The aim of this systematic review was to provide insight into QI interventions used in a hospital setting and their effects on improving patient experiences, and possible barriers and promoters for QI work. Methods: Prisma guidelines were used to design this review. International academic literature was searched in Embase, Medline OvidSP, Web of Science, Cochrane Central, PubMed Publisher, Scopus, PsycInfo, and Google Scholar. In total, 3,289 studies were retrieved and independently screened by the first two authors for eligibility and methodological quality. Data was extracted on the study purpose, setting, design, targeted patient experience domains, QI strategies, results of QI, barriers, and promotors for QI. Results: Twenty-one pre–post intervention studies were included for review. The methodological quality of the included studies was assessed using a Critical Appraisal Skills Program (CASP) Tool. QI strategies used were staff education, patient education, audit and feedback, clinician reminders, organizational change, an

European regulatory agenices should employ full time statisticians

No abstract available

Magnetic properties of colloidal suspensions of interacting magnetic particles

We review equilibrium thermodynamic properties of systems of magnetic particles like ferrofluids in which dipolar interactions play an important role. The review is focussed on two subjects: ({\em i}) the magnetization with the initial magnetic susceptibility as a special case and ({\em ii}) the phase transition behavior. Here the condensation ("gas/liquid") transition in the subsystem of the suspended particles is treated as well as the isotropic/ferromagnetic transition to a state with spontaneously generated long--range magnetic order.Comment: Review. 62 pages, 4 figure