Appraising critical success factors in sustainable housing projects: A comparative study of PPP modalities in Saudi Arabia.

This study examines the critical success factors (CSFs) crucial for the effective deployment of public-private partnership (PPP) models in sustainable housing projects in the Kingdom of Saudi Arabia (KSA), underpinning the nation's Vision 2030. Through a robust methodology that incorporates a profound literature review, structured interviews, and a survey involving key stakeholders, the study prioritizes fourteen significant CSFs integral to PPP efficacy. Employing Analytical Hierarchy Process analysis, key outcomes underscore the paramount importance of technical aspects with an emphasis on sustainability, tailoring risk-sharing and allocation to encompass green technologies and eco-friendly practices, and economic stability in the light of long-term environmental sustainability in fostering successful sustainable housing projects. Notably, the Build-Operate-Transfer (BOT) model is categorized as the most effective PPP modality, attaining a mean importance score of 4.07. This model is contrasted with other modalities such as Design-Build-Operate (DBO) and Build-Own-Lease-Transfer (BOLT), which scored lower in effectiveness. This comprehensive evaluation provides crucial insights for policymakers and practitioners, emphasizing the strategic selection of PPP modalities and the prioritization of CSFs to enhance the sustainability and effectiveness of housing projects in KSA.

Evaluation of insurance policies in the Saudi Arabian construction contracts.

The construction sector is more complicated and prone to risk than many other industries due to the size of the projects and the financial capital involved. Arranging insurance is the prudent course of action for risk management in the construction sector. There is a lack of clarity in insurance policies for public construction projects in the Kingdom of Saudi Arabia (KSA), which poses additional risks to all involved contracting parties. The aim of this research is to evaluate insurance policies in the KSA's public construction projects to identify the key deficiencies and obstacles and provide a road map for improvement in the insurance sector concerning insurance against financial losses, professional liability, defects' liability, hidden defects, and others. Forty-two contractors and forty-two owners in Saudi Arabia were surveyed, using a questionnaire to gather information for the study about their knowledge of and attitudes regarding risk transfer through insurance (professional liability, defects liability, and hidden defects). The study also covers the selection criteria for insurance policies for projects that potentially shift risk to the construction sector. Ten criteria were also examined as potential sources of liability issues and suggested as potential remedies in KSA. The findings indicate that the duty and liability of engineers and those participating in these projects can be offset by engineers' insurance against professional errors and hidden flaws, and by the construction industry's clear liability policy. Additionally, the research is envisaged to contribute to construction projects' overall quality and safety, ensuring that robust legal and financial safeguards protect all stakeholders.

Prevalence of Possible Mental Disorders in Syrian Refugees Resettling in the United States Screened at Primary Care.

Little is known about mental health problems among newly arrived Syrian refugees in the US. It is important to determine the prevalence of common consequences of exposure to trauma and high stress, and provide needed interventions, as these conditions if untreated, can be detrimental to mental and physical health. Adult Syrian refugees (n = 157, 47.1% women, 52.9% men) were screened at one-month mandatory primary care health visit for Posttraumatic Stress Disorder (PTSD), anxiety and depression using PTSD Checklist, and Hopkins Symptoms Checklist. Prevalence of possible diagnoses was high for PTSD (32.2%), anxiety (40.3%), and depression (47.7%). Possible prevalence of depression and anxiety were higher among women, but there was no gender difference for possible PTSD. We found a high prevalence of possible psychiatric disorders related to trauma and stress among Syrian refugees newly resettled in the US. Due to the high prevalence and feasibility of brief screening tools in primary care facilities, we recommend mental health screening during primary care health visits for resettled Syrian refugees.

High-Performance Polymers Sandwiched with Chemical Vapor Deposited Hexagonal Boron Nitrides as Scalable High-Temperature Dielectric Materials.

Polymer dielectrics are the preferred materials of choice for power electronics and pulsed power applications. However, their relatively low operating temperatures significantly limit their uses in harsh-environment energy storage devices, e.g., automobile and aerospace power systems. Herein, hexagonal boron nitride (h-BN) films are prepared from chemical vapor deposition (CVD) and readily transferred onto polyetherimide (PEI) films. Greatly improved performance in terms of discharged energy density and charge-discharge efficiency is achieved in the PEI sandwiched with CVD-grown h-BN films at elevated temperatures when compared to neat PEI films and other high-temperature polymer and nanocomposite dielectrics. Notably, the h-BN-coated PEI films are capable of operating with >90% charge-discharge efficiencies and delivering high energy densities, i.e., 1.2 J cm-3 , even at a temperature close to the glass transition temperature of polymer (i.e., 217 °C) where pristine PEI almost fails. Outstanding cyclability and dielectric stability over a straight 55 000 charge-discharge cycles are demonstrated in the h-BN-coated PEI at high temperatures. The work demonstrates a general and scalable pathway to enable the high-temperature capacitive energy applications of a wide range of engineering polymers and also offers an efficient method for the synthesis and transfer of 2D nanomaterials at the scale demanded for applications.