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The purpose of this paper is to prepare superabsorbent polymers (SAPs) based on acrylic acid, which is considered hygroscopic material to incorporate in rubber formulation, which results in producing moisten rubber that is used as roofing sheets.

SAPs were synthesized via free radical bulk polymerization technique using different content of cross-linker N, N'-methylenebisacrylamide and potassium persulfate. Differential scanning calorimeter, thermal gravimetric analysis, Fourier transform infrared spectroscopy and transmission electron microscopy were used to characterize SAPs and confirmed the formation of cross-linked hydrogel structure. The water absorbency and the gel fraction for sodium polyacrylate (NaPA) were investigated. Then, the influence of obtained NaPA on the swelling behavior of the prepared natural rubber (NR) compound has been discussed.

Absorption characteristics and gel fraction of NaPA were found to depend on the content of the cross-linker in the system. SAPs are used to improve the absorbance behavior and performance of the NR to produce, roofing sheets using in hot weather. The morphology of the obtained rubber compound was well-explained by using a scanning electron microscope.

The research provides a simple way to produce moisten rubber that can be used as a roofing sheet to overcome warm weather.

Moisten rubber roofing sheets provide a low-cost option in many developing countries with hot climates, and thus, help save the environment from global warming.

The purpose of this paper is to analyze the effect of political instability on rural credit in Lima between 1835 and 1865. In particular, it explores the effects of wars on interest rates for the agricultural sector.

The paper relies on primary sources for the study of the early credit market of Lima. In particular, the study relies on a sample of more than 800 notarized loans for 1835–1865, collected from the National Archives of Peru, to determine the effect of wars on the cost of credit.

The evidence shows that wars increased interest rates on rural loans and that the impact of wars on the cost of credit was greater when the State lacked fiscal resources. Political instability made funding more costly for landlords and farmers, especially in the late 1830s and early 1840s.

This paper is one of the few historical studies on the role of wars on rural credit in Latin America. It contributes to our understanding of the linkages between political instability and financial development.

The purpose of this paper is to study the temperature characteristics of hydro-viscous clutch with different structure of friction disks and obtain the distribution of film temperature.

The mathematical model of oil film between friction disks with radial grooves is established. Based on the flow rate equation, the temperature rise equation of oil film is deduced. Considering two-phase flow, the temperature distribution in the oil shear stage and the effects of the ratio of inner radius to outer radius on film temperature rise is studied by using computational fluid dynamics (CFD) technology.

The results show that when input speed is constant, the increase in the ratio of inner to outer radius leads to an increase in the peak temperature and the decrease in the ratio results in a larger increasing rate of temperature.

These results are of interest for the study of hydro-viscous drive and its applications. This study can also provide a theoretical basis for the mechanism of temperature rise by considering the effect of two-phase flow.

This paper aims to examine the impact of coastline on the rental value of residential property in proximity to the coastline, using the hedonic pricing model from two perspectives. First, Model 1A–C accounted for estimating the influence of coastal amenities while controlling for other housing attributes influencing rent. Second, Model 2A–C accounted for the interaction between coastal amenities/disamenities and other housing attributes influencing rent.

A survey approach was adopted for the data collection process. For both models, property values were measured in proximity to coastline using 0–250 m, 251–500 m and 0–500 m.

Findings revealed that property rental value increases as we move away from the coastline when disamenities are not controlled. The results suggested that for a mean-priced home (N2,941,029 or $8,170) at the mean distance from the coastline (301.83 m), a 1% increase in distance from the coastline would result in a 0.001% or N9.77 ($0.03) increase in rental value.

The implication to real estate valuers is that varying premiums should be considered when valuing a property depending on the distance to the coastline while considering other housing attributes.

This research introduces a novel approach to the hedonic model for determining property values in proximity to coastal environment by estimating the influence of coastal amenities while controlling for other housing attributes influencing rent, on the one hand, and accounting for the interaction between coastal amenities/disamenities and other housing attributes influencing rent, on the other.

The purpose of the paper is to explore the legal and institutional frameworks for optimal regulation of capital market beyond compliance-based regulation, to enable the market to deliver on its strategic role as the enabler of efficient allocation of resources and economic growth.

The paper relies on doctrinal approach to assess the existing regulatory approaches and prospects for the future.

The paper found that the regulatory authorities unduly concentrate on compliance-based and sanction-based regimes without sufficient emphasis on innovations and transformative solutions that foster diversification and efficiency in the market. The paper also found that the deployment of innovations and transformative solutions complemented with robust regulation is positively correlated with capital market growth.

The paper offers fresh insights on the optimal approaches to regulation of capital market that transcend compliance-based and sanction-based regimes to reliance on innovative tools that expand, diversify and effectuate the functionality and utility of capital market.

Asylum seekers, refugees and immigrants’ access to healthcare vary in South Africa and Cape Town due to unclear legal status. The purpose of this paper is to shed light on the source of this variation, the divergence between the 1996 South African Constitution, the immigration laws, and regulations and to describe its harmful consequences.

Based on legal and ethnographic research, this paper documents the disjuncture between South African statutes and regulations and the South African Constitution regarding refugees and migrants’ access to healthcare. Research involved examining South African jurisprudence, the African Charter, and United Nations’ materials regarding rights to health and health care access, and speaking with civil society organizations and healthcare providers. These sources inform the description of the immigrant access to healthcare in Cape Town, South Africa.

Asylum-seekers and refugees are entitled to health and emergency care; however, hospital administrators require documentation (up-to-date permits) before care can be administered. Many immigrants – especially the undocumented – are often unable to obtain care because of a lack of papers or because of “progressive realization,” the notion that the state cannot presently afford to provide treatment in accordance with constitutional rights. These explanations have put healthcare providers in an untenable position of not being able to treat patients, including some who face fatal conditions.

The research is limited by the fact that South African courts have not adjudicated a direct challenge to being refused care at healthcare facility on the basis of legal status. This limits the ability to know how rights afforded to “everyone” within the South African Constitution will be interpreted with respect to immigrants seeking healthcare. The research is also limited by the non-circulation of healthcare admissions policies among leading facilities in the Cape Town region where the case study is based.

Articulation of the disjuncture between the South African Constitution and the immigration laws and regulations allows stakeholders and decision-makers to reframe provincial and municipal policies about healthcare access in terms of constitutional rights and the practical limitations accommodated through progressive realization.

In South Africa, immigration statutes and regulations are inconsistent and deemed unconstitutional with respect to the treatment of undocumented migrants. Hospital administrators are narrowly interpreting the laws to instruct healthcare providers on how to treat patients and whom they can treat. These practices need to stop. Access to healthcare must be structured to comport with the constitutional right afforded to everyone, and with progressive realization pursued through a non – discriminatory policy regarding vulnerable immigrants.

This paper presents a unique case study that combines legal and social science methods to explore a common and acute question of health care access. The case is novel and instructive insofar as South Africa has not established refugee camps in response to rising numbers of refugees, asylum seekers and immigrants. South Africans thus confront a “first world” question of equitable access to healthcare within their African context and with limited resources in a climate of increasing xenophobia.

The current review aims to focus on how risk and protective factors for self-harm in secure mental health hospitals are captured in the literature.

Fifty-seven articles were included in a systematic review, drawn from an initial 1,119 articles, post duplicate removal. Databases included Psycinfo, Psycarticles, Psycnet, Web of Science and EBSCO host. A thematic analysis was used, which included a meta-ethnographic approach for considering qualitative papers.

There was a clear focus on risk factors, with eight identified (in order of occurrence): raised emotional reactivity and poor emotion regulation; poor mental health; traumatic experiences; personality disorder diagnosis and associated traits; increased use of outward aggression – dual harm; constraints of a secure environment and lack of control; previous self-harm and suicide attempts; and hopelessness. Protective factors featured less, resulting in only three themes emerging (in order of occurrence): positive social support and communication; positive coping skills; and hope/positive outlook.

This includes a proposal to move focus away from “risk” factors, to incorporate “needs”, in terms of individual and environmental factors. There is also a need for more attention to focus on developing high quality research in this area.

The research captures an area where a synthesis of research has not been comprehensively undertaken, particularly with regards to capturing protective as well as risk factors.

This study aims to better understand the effects of speeches as a valuable communication tool for central banks. It extends the analysis of the effects of public speeches on jumps to determine whether individual speakers matter partly because of their name, position or institution.

This study detects intraday jumps using a robust-to-jump volatility estimator that accounts for deterministic seasonality. As a result, this study removes spurious jumps that occur when volatility is high and consider the relatively small jumps that occur when volatility is low. After identifying jumps, this study examines their reactions to senior official speeches and macroeconomic news surrounding the US and European Union (EU) financial crises.

Despite having the most influential individual speakers, this study finds that the impact of the Federal Reserve (Fed) and European Central Bank (ECB) is mitigated because the two institutions have a relatively small impact on currency jumps. This finding shows that the speaker’s name is more important than his or her institution affiliation. While the Federal Reserve Bank President and Chief Executive, as well as ECB board members, significantly reduce jump sizes, particularly during the EU crisis period, both the Fed Chairman and the ECB President increase the magnitude of the jump in both the US crisis and noncrisis periods, contributing to market instability.

The implications of the results include international portfolio management, currency derivatives pricing and hedging, risk management and market efficiency.

The findings contribute to a better understanding of the effects of senior official speech attributes on currency jumps in various economic states. The results raise questions about the speaker’s name, institution and position’s effectiveness in calming markets and reducing uncertainty.

Extant research on workplace ostracism has investigated a victimization perspective to understand ostracism at the cost of examining the perpetrator-centric view of ostracism. This study aims to draw on the self-categorization theory and the social exchange theory to investigate the harmful effects of workplace romance in cultivating workplace ostracism from the perspective of perpetrator to combat concerns for victim blaming. This study further proposes that workplace ostracism triggered by workplace romance provokes interpersonal conflict. Besides, this study investigates the moderating role of prosocial behavior in the underlying linkages.

This study uses a multisource, time-lagged research design to collect data from employees working in the service sector organizations in Pakistan. This study analyzes 367 responses using SmartPLS (v 4.0).

The findings of this study reveal that workplace romance elicits workplace ostracism, which, in turn, fosters interpersonal conflict among coworkers. In addition, this study finds that ingroup prosocial behavior strengthens the associations between workplace romance and workplace ostracism, and workplace romance and interpersonal conflict, mediated by workplace ostracism such that the associations are more potent at higher levels of ingroup prosocial behavior and vice versa.

To the best of the authors’ knowledge, this is the first study that examines workplace romance as the perpetrator-centric antecedent of workplace ostracism, and ingroup prosocial behavior in exaggerating the outgroup ostracism and interpersonal conflict.

Video games are often thought of as trite activities for younger generations. However, research in game studies over the last few decades have revealed that games can be valuable tools for growth and connection, particularly among older generations. Exploring the ways digital games can be used as tools for connection has gained increased attention in recent months with global quarantines as a result of COVID-19. This article reviews the research that has examined the utility of digital games for older adults, focusing specifically on the ways in which games can be tools for social connectedness and psychological healing for older adults and intergenerationally. Special focus will be placed on the role games can play for post-traumatic stress among first responders.