GVCs and environmental sustainability in MENA: Do digitalization and institutions make a difference?

The advent of digitalization has brought about profound changes in the global value chain, raising significant concerns about environmental sustainability. However, the environmental consequences resulting from the interplay between global value chain participation and digitalization have not been adequately explored, particularly in the Middle East and North Africa region (MENA). To address this gap, our research delves into the impact of global value chain participation on environmental sustainability in 15 MENA countries from 1996 to 2018. We also investigate the moderating effects of two critical policy variables: digitization and institutional quality, employing the SYS-GMM Panel method and Random Effects method. Empirical findings reveal that participating in the global value chain has positive environmental implications for MENA countries. These results hold true and remain consistent when considering forward value participation linkages and oil-importing nations. Furthermore, we observe that the proposed moderators play a significant role in shaping the environmental impact of the global value chain. Specifically, institutions and global value chains work in synergy to promote environmental sustainability in MENA, encompassing both oil-importing and oil-exporting groups. However, the interaction between the global value chain and digitalization generates a negative net effect, which diminishes beyond a specific digitalization threshold of 10.23%. Consequently, implementing complementary policies becomes crucial when digitization is below this threshold. Additionally, our study supports the resource curse hypothesis for the MENA region, suggesting that natural resources contribute to environmental degradation. These insights offer valuable guidance for enhancing global value chain integration while preserving a sustainable environment in MENA

Can the Resource Curse for Well-Being Be Morphed into a Blessing? Investigating the Moderating Role of Environmental Quality, Governance, and Human Capital

One of the most pressing global concerns is ensuring high levels of human well-being without overburdening natural resources. The impact of natural resource abundance on the economy’s monetary dimensions has long been controversial, with researchers debating whether it is a blessing or a curse. Recently, focus has shifted to its impact on non-monetary attributes (i.e., human well-being), with conflicting empirical evidence with respect to existence of the resource curse. However, studies on the indirect impact of natural resources on well-being are rare. This inquiry extends previous research by investigating the effect of natural resource abundance on human well-being and the underlying mechanisms that may clarify the convoluted link between the two variables in the UAE from 1990 to 2019. The novel contribution of this research is the evaluation of the resource curse concept from a broader perspective by considering how resource endowments indirectly affect human well-being via environmental quality, human capital, and governance channels. To this end, in the present study, we utilized the autoregressive distributed lag (ARDL) technique for cointegration and deployed the vector error correction model (VECM) for causality investigation. The ARDL results indicate cointegrated variables with diverse integration orders, signifying a long-term bond. Furthermore, the outcomes endorse the notion that resource endowment is inversely related to well-being as calibrated by the Human Development Index (HDI), corroborating the “Resource Curse Concept”, whereby large resource endowments impede human well-being. In terms of transmission channels, natural resources improve human well-being through environmental quality. In contrast, both human capital and governance have insignificant impacts on the influence of natural resources on well-being. Therefore, resource endowments improve human well-being as long as they do not harm the environment. The present analysis also resulted in the development of a feedback hypothesis between natural resource endowments and human well-being. The findings of this study provide several insights into the control of the direct and indirect adverse effects of natural resources on human well-being, the foremost being the provision of incentives for low-carbon energy use, reducing energy intensity, and assisting businesses engaged in R&D to minimize the cost of employing renewables, as well as investments in low-carbon technologies/cleantech and environmental technologies

Economic Development and Environmental Sustainability in the GCC Countries: New Insights Based on the Economic Complexity

The economic development and environmental sustainability nexus have long been a fiercely debated issue. Researchers have widely acknowledged the environmental Kuznets curve (EKC) hypothesis when evaluating this relationship. Recently, an emerging strand of research examined the EKC through the lens of the Economic Complexity Index (ECoI) as a broader measure of economic development. However, empirical evidence of the index’s environmental impact is still limited. Despite its growing prominence, no prior research has been conducted in the Gulf Cooperation Council (GCC) using the ECoI, particularly in the EKC context. Furthermore, research comparing the ECoI differentiated impacts on Ecological Footprint and Carbon Dioxide (CO2) emissions is largely lacking. Extending on this line of research, our investigation intends to ascertain the influence of ECoI, income, globalization as well as non-renewable energy consumption on two dominant environmental pressure metrics: CO2 emissions and ecological footprint per capita (EFpc) within the EKC hypothesis context in six GCC countries during 1995–2018. To this end, Pedroni’s cointegration approach was conducted to examine the long-term association between variables; cointegration coefficients were analyzed using Dynamic and Fully modified OLS. Our investigation indicates the emergence of an inverted U-shaped link between ECoI and environmental sustainability in the GCC region for both CO2 emissions and EFpc. Furthermore, according to the individual country analysis, our findings demonstrate that the EKC hypothesis is sensitive to both the environmental degradation indicator used and the country analyzed; such that the quadratic link incorporating ECoI is confirmed for Saudi Arabia, Bahrain, United Arab Emirates, and Kuwait when EFpc is employed. In comparison, it holds for Kuwait, Oman, and Qatar when CO2 emissions are used. Moreover, the findings show that income per capita and non-renewables consumption significantly harm environmental sustainability, however, in terms of EFpc only. In contrast, through its three sub-dimensions, globalization contributes to the environmental burden by increasing both EFpc and CO2 emissions. These conclusions emphasize the economic complexity’s dominant role in mitigating environmental pollution in GCC beyond a certain threshold. Finally, the paper reaches a concise set of implications. Among the foremost, the GCC nations could enhance their environmental sustainability by diversifying their energy sources and increasing reliance on renewable sources, encouraging investment in carbon-reduction technologies, converting their economy from energy-intensive to technology-intensive, as well as imposing strict environmental laws to enable globalization to improve environmental quality

Selective immunoglobulin M deficiency in an adult with miliary tuberculosis: A clinically interesting coexistence. A case report and review of the literature

AbstractSelective immunoglobulin M (SIgM) deficiency is a rare form of dysgammaglobulinemia. Here we are reporting a 31year old man with multiple cervical and testicular abscesses who was investigated and found to have miliary tuberculosis (MTB) with primary SIgM deficiency (Serum IgM: 17.4mg/dL) and was treated aggressively with anti-tuberculous treatment

The Halting Process of Democratization in the Arab World: Current Challenges and Prospects

Following the uprisings that began in 2010, a number of scholars leaped to hasty conclusions about the end of “Arab exceptionalism” in regard to democracy. More than half a decade later, however, the outcomes have generally been negative and disappointing, as some Arab countries have plunged into civil war and internal conflict that threaten their very existence as political entities. In other cases, the ruling elites have taken tentative steps on the path of political reform in an effort to divert the winds of change; alternatively, democratization has at times been considered a low priority in the face of perceived security and development challenges. All of these responses represent attempts by ruling regimes to modernize authoritarianism rather than to engage in genuine democratization. The aim of this chapter is to account for the most significant political and democratic trends in the Arab world in the wake of the Arab Spring and to analyze the current challenges facing the process of democratization

New mechanism of cluster-field evaporation in rf breakdown

Using a simple field evaporation model and molecular dynamics simulations of nanoscale copper tip evolution in a high electric field gradient typical for linacs, we have studied a new mechanism for rf-field evaporation. The mechanism consists of simultaneous (collective) field evaporation of a large group of tip atoms in high-gradient fields. Thus, evaporation of large clusters is energetically more favorable when compared with the conventional, ‘‘one-by-one’’ mechanism. The studied mechanism could also be considered a new mechanism for the triggering of rf-vacuum breakdown. This paper discusses the mechanism and the experimental data available for electric field evaporation of field emission microscopy tips

Simulation of high power deposition on target materials: applications in magnetic, inertial fusion, and high power plasma lithography devices

High power and particle deposition on target materials are encountered in many applications including magnetic and inertial fusion devices, nuclear and high energy physics applications, and laser and discharge produced plasma devices. Surface and structural damage to plasma-facing components due to the frequent loss of plasma confinement remains a serious problem for the Tokamak reactor concept. The deposited plasma energy causes significant surface erosion, possible structural failure, and frequent plasma contamination. The chamber walls in inertial fusion energy (IFE) reactors are also exposed to harsh conditions following each target implosion. Key issues include intense photon and ion deposition, wall thermal and hydrodynamic evolution, wall erosion and fatigue lifetime, and chamber clearing and evacuation to ensure desirable conditions prior to next target implosion. Both Laser and Discharge produced plasma are being used as a light source for extreme ultraviolet (EUV) lithography. A key challenge for Discharge Produced Plasma (DPP) and laser produced plasma (LPP) devices is achieving sufficient brightness to support the throughput requirements of High-Volume Manufacturing lithography exposure tools. An integrated model for the description of hydrodynamics and optical processes in a DPP device has been developed, integrated. And benchmarked