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PurposeTo systematically evaluate any consensus for the etiology, definition, presentation and outcomes of developmental lumbar spinal stenosis (DLSS). MethodsA comprehensive literature search was undertaken by 2 independent reviewers with PubMed, Ovid, and Web of Science to identify all published knowledge on DLSS. Search terms included “developmental spinal stenosis” or “congenital spinal stenosis” and “lumbar”. The inclusion criteria were English clinical studies with sample size larger than 8, articles examining the etiology, diagnostic criteria, surgical outcomes of DLSS, and its association with other spinal pathologies. Articles that did not specify a developmental component were excluded. The GRADE approach was used to assess their quality of evidence. ResultsThe initial database review found 404 articles. Twenty articles with moderate to very low quality met the inclusion criteria for analysis. The bony canal diameter was significantly shorter in patients with DLSS than normal subjects. In addition, the risk of re-operation on adjacent levels (21.7%) was high which could be explained by multi-level stenosis. However, there was a lack of consensus on the methodology of diagnosing DLSS and on its specific surgical techniques.ConclusionMulti-level stenosis and re-operation at adjacent levels are especially common with DLSS. Identification of these individuals provides better prognostication after surgery. However, current literature provides few consensus on its definition and the required surgical approach. Besides, there are limited reports of its etiology and association with other spinal pathologies. Due to these limitations, standardizing the definition of DLSS and investigating its etiology and expected clinical course are necessary.

Study Design: Cross-sectional study. Objectives: To define multilevel lumbar developmental spinal stenosis (DSS) using a composite score model and to determine its prevalence. Methods: This was a cohort study of 2385 openly recruited subjects with lumbosacral (L1-S1) MRIs. All subjects with previous spinal surgery or spinal deformities were excluded. The anteroposterior (AP) vertebral canal diameter was measured by two independent observers. Any associations between level-specific vertebral canal diameter and subject body habitus were analysed with non-parametric tests. Three or more stenotic levels, equivalent to a composite score of 3 or more, were considered as multilevel DSS. The median values of these subjects’ AP canal diameters were used to construct the multilevel DSS values. Receiver operating characteristic analysis was utilized to determine the ability of these cut-off values to screen for DSS by presenting their area under curve, sensitivity and specificity. Results: Subject body habitus was poorly correlated with AP vertebral canal diameter. Multilevel DSS was identified as L1<19 mm, L2<19 mm, L3<18 mm, L4<18 mm, L5<18 mm, S1<16 mm with 81%–96% sensitivity and 72%–91% specificity. The prevalence of multilevel DSS in this cohort was 7.3%. Conclusions: Utilizing a large homogeneous cohort, the prevalence of multilevel DSS is determined. Our cut-offs provide high diagnostic accuracy. Patients with multiple levels that fulfil these criteria may be at-risk of spinal canal compressions at multiple sites. Level of Evidence: III

Confucianist, Buddhist and Taoist teachings offer insight into emotion processing for members of East Asian cultures. Emerging research also suggests distinguishing Confucianism into restrictive (focused on restricting self-needs for the greater good), and empowering (emphasising self-improvement) facets, and this distinction may be relevant for emotional processes. However, research has not considered how endorsement of these teachings influence emotion regulation among East Asian trauma survivors. This study presents a secondary analysis from a larger study on cultural differences in emotion regulation, and explored how levels of adherence to these teachings influence daily emotion regulation and affective outcomes among Chinese Australian trauma survivors. Chinese Australian trauma survivors (  = 49) completed a baseline questionnaire assessing trauma exposure, posttraumatic stress disorder (PTSD) symptomatology and endorsement of Confucianism (restrictive and empowering), Buddhism, and Taoism. Participants then completed ecological momentary assessments (EMA) measuring daily use of suppression, acceptance and interpersonal emotion regulation and both positive and negative affect over seven days. First, Taoism was positively associated with the use of daily acceptance, and Buddhism was positively associated with daily use of interpersonal emotion regulation. Second, Taoism moderated the positive relationship between acceptance and positive affect, whereby the strength of this association increased as Taoism endorsement increased. Taoism also moderated the relationship between interpersonal emotion regulation and both positive and negative affect, such that the associations were only significant for participants with higher levels of Taoism. Both restrictive and empowering Confucianism also moderated the negative association between acceptance and negative affect, with this association only being significant for individuals with low levels of empowering Confucianism and high levels of restrictive Confucianism. Our findings provide preliminary indications that the Three Teachings of East Asia may influence emotion regulation and associated affective outcomes among Chinese trauma survivors, highlighting a need for further research.

The primary objective of the research is to determine the influences of B2B relationship quality and opportunism on firm performance. This study takes a general perspective of business organisations by examining the hypothesised relationships in the context of B2B’s in the industrial business environment. The research employs a cross-sectional design whereby quantitative data is collected by means of an online survey. Using non-probability, judgmental and snowball sampling technique, a sample size of 98 employees from the industrial business environment within Malaysia was collected. The gathered data was analysed using statistical software Smart -PLS. The research yields several interesting findings on the association between B2B relationship quality and firm performance in the industrial business environment within Malaysia. Findings also unfolded that the quality of a relationship between businesses is able to influence firm performance and opportunism. Opportunism on the other hand was not found to have any influence on Firm Performance. The results of the study implied that the quality of the relationship between businesses that is built upon trust, commitment, satisfaction and information sharing are important in business relationships. A high-quality relationship that is shared among suppliers and customers is able to predict better firm performance and inhibit the negative effect of opportunism.

Abstract Background Although attention deficit hyperactivity disorder (ADHD) is known to be common in psychotic disorders, reported prevalence rates vary widely, with limited understanding of how different factors (eg, assessment methods, geographical region) may be associated with this variation. The aim was to conduct a systematic review and meta-analysis to determine the prevalence of ADHD in psychotic disorders and factors associated with the variability in reported rates. Study Design Searches were conducted in MEDLINE, Embase, PsycINFO, CINAHL, and Scopus in May 2023. Studies were eligible if the frequency of ADHD was reported in psychotic disorder samples. Pooled prevalence meta-analyses were performed. Subgroup analyses and meta-regressions explored whether demographic and study characteristics were associated with reported rates. Study Results Thirty-six studies were included, involving 30 726 individuals. The pooled lifetime prevalence of ADHD in psychotic disorders was 18.49% (95% CI 11.78%, 27.83%). The between-study heterogeneity was high (I2 = 98.4% [95% CI 98.2%, 98.6%]). Subgroup analyses revealed higher prevalence rates when using ADHD DSM-IV criteria compared to International Classification of Diseases (ICD)-10. Rates in childhood-onset psychotic disorders were higher than adolescent- and adult-onset psychotic disorder samples. Rates were higher in North America compared to other regions. Meta-regressions indicated a decrease in prevalence rates with publication year. Conclusions The prevalence of ADHD in psychotic disorders appears higher than in the general population, highlighting the need for clinical attention and further research into this comorbidity. Reported rates, however, vary significantly. Reasons may include diagnostic criteria, age of psychosis onset, region, study design, and publication year. Future research should investigate these factors using rigorous ADHD assessment protocols.

BackgroundLumbar disc degeneration (LDD) may be related to aging, biomechanical and genetic factors. Despite the extensive work on understanding its etiology, there is currently no automated tool for accurate prediction of its progression.PurposeWe aim to establish a novel deep learning-based pipeline to predict the progression of LDD-related findings using lumbar MRIs.Materials and methodsWe utilized our dataset with MRIs acquired from 1,343 individual participants (taken at the baseline and the 5-year follow-up timepoint), and progression assessments (the Schneiderman score, disc bulging, and Pfirrmann grading) that were labelled by spine specialists with over ten years clinical experience. Our new pipeline was realized by integrating the MRI-SegFlow and the Visual Geometry Group-Medium (VGG-M) for automated disc region detection and LDD progression prediction correspondingly. The LDD progression was quantified by comparing the Schneiderman score, disc bulging and Pfirrmann grading at the baseline and at follow-up. A fivefold cross-validation was conducted to assess the predictive performance of the new pipeline.ResultsOur pipeline achieved very good performances on the LDD progression prediction, with high progression prediction accuracy of the Schneiderman score (Accuracy: 90.2 ± 0.9%), disc bulging (Accuracy: 90.4% ± 1.1%), and Pfirrmann grading (Accuracy: 89.9% ± 2.1%).ConclusionThis is the first attempt of using deep learning to predict LDD progression on a large dataset with 5-year follow-up. Requiring no human interference, our pipeline can potentially achieve similar predictive performances in new settings with minimal efforts.

Ultra-low temperature scanning tunnelling microscopy and spectroscopy (STM/STS) achieved by dilution refrigeration can provide unrivalled insight into the local electronic structure of quantum materials and atomic-scale quantum systems. Effective isolation from mechanical vibration and acoustic noise is critical in order to achieve ultimate spatial and energy resolution. Here, we report on the design and performance of an ultra-low vibration (ULV) laboratory hosting a customized but otherwise commercially available 40mK STM. The design of the vibration isolation consists of a T-shaped concrete mass block (55t), suspended by actively controlled pneumatic springs, and placed on a foundation separated from the surrounding building in a \"room-within-a-room\" design. Vibration levels achieved are meeting the VC-M vibration standard at >3 Hz, reached only in a limited number of laboratories worldwide. Measurement of the STM's junction noise confirms effective vibration isolation on par with custom built STMs in ULV laboratories. In this tailored low-vibration environment, the STM achieves an energy resolution of 43ueV (144 mK), promising for the investigation and control of quantum matter at atomic length scales.

The market is inexorably moving towards voice and data convergence. Voicemail, unified messaging conferencing, presence and instant messaging are built into more and more voice over IP (VoIP) products. VoIP solutions are much cheaper than they used to be, and a great replacement for the traditional analogue system. For most organisations, the move to VoIP is prompted by their existing telephony infrastructure reaching the end of its useful life. However, earlier migration may be triggered by new buildings, company mergers or business-driven requirements for new applications which can be more easily delivered or integrated with IP telephony systems. Companies that see the opportunities afforded by leveraging the new capabilities of IP communications systems to improve business processes should consider moving to VoIP now. It is entirely possible to integrate a new VoIP network into an old telecommunications system. A VoIP solution can be implemented into an existing environment piece-by-piece and quickly rolled out over an existing network without ripping out what's already there and \"fork-lifting\" in a whole set of new products. 2007 is likely to be the first year that IP phones outsell traditional phones. Nearly all Private Branch Exchange (PBX) vendors now offer IP telephony products, and there are well-established solutions available for all areas of the market, from the smallest SME to the largest enterprise.

3Com has identified several trends in the fast-growing SMB market that will drive innovation in the networking industry in 2006. Specifically, SMBs will focus on the following key areas of their business over the next 12 months: Leveraging Web-based applications. An increase in SMB-focused, cost- effective and easier-to-use versions of business applications such as customer relationship management (CRM) and enterprise resource planning (ERP) optimised for the SMB market will drive the need for more network bandwidth and performance to alleviate costly business downtime. The trend toward \"on-demand applications\" and \"software as a service\" is also altering the way SMBs approach networking. Some SMBs will employ an application service provider (ASP) model of outsourcing for SMB cost savings and IT management. But other SMBs will need to manage the applications internally because of the need to integrate the applications into other systems and processes specific to the organisation. Network management, monitoring and service and support will be critical factors in 2006.

Research clearly shows that IP telephony in the enterprise lowers the total cost of network ownership (TCO). Yet, while cost savings are important, the long-term value proposition for IP communications, including multimedia over IP, is the ability to add new applications that improve employee flexibility and productivity. Companies can significantly enhance business communications through the deployment of new IP-enabled services and applications such as IP Messaging, IP Conferencing and IP Contact Centre.