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The purpose of this paper is to assess the spatial and temporal variations of extreme hot days (H*) and heat wave frequencies across Iran.

The authors used daily maximum temperature (T_max) data of 27 synoptic stations in Iran. These data were standardized using the mean and the standard deviation of each day of the year. An extreme hot day was defined when the Z score of daily maximum temperature of that day was equal or more than a given threshold fixed at 1.7, while a heat wave event was considered to occur when the Z score exceeds the threshold for at least three continuous days. According to these criteria, the annual frequency of extreme hot days and the number of heat waves were determined for all stations.

The trend analysis of H* shows a positive trend during the past two decades in Iran, with the maximum number of H* (110 cases) observed in 2010. A significant trend of the number of heat waves per year was also detected during 1991-2013 in all the stations. Overall, results indicate that Iran has experienced heat waves in recent years more often than its long-term average. There will be more frequent and intense hot days and heat waves across Iran until 2050, due to estimated increase of mean air temperature between 0.5-1.1 and 0.8-1.6 degree centigrade for Rcp2.6 and Rcp8.8 scenarios, respectively.

The trend analysis of hot days and heat wave frequencies is a particularly original aspect of this paper. It is very important for policy- and decision-makers especially in agriculture and health sectors of Iran to make some adaptation strategies for future frequent and intense hot days over Iran.

This paper aims at contributing to the research on the role played by corruption in the health procurement by use non-parametric techniques to examine whether the efficient execution of Italian public contracts for healthcare infrastructures is affected by socio-economic variables (including the level of “environmental” corruption) in the area where the work is localised and by the institutional features of the contracting authority.

A data envelopment analysis (DEA) is applied to a sample of 405 contracts during the period 2000-2005. Smoothed bootstrap techniques to calculate confidence intervals for the estimated efficiency parameters along with different non-parametric tests and kernel density estimates are used.

Results show that “environmental” corruption negatively influences the performance of healthcare infrastructures. Furthermore, healthcare contracting authorities appear to be less efficient than other public bodies acting as procurers.

The paper highlights the role of environmental corruption in the provision of healthcare infrastructures.

Green sukuk is a tool to finance climate change which has garnered considerable attention. However, having only recently come into existence has its own set of challenges for this tool that require immediate identification and government intervention to intensify its growth. This study aims to explore the challenges encountered by green sukuk issuers and the structure of a reconciled green sukuk issuance framework to speed up the market’s growth with the right interventions.

The study engaged a qualitative approach via multiple case study interviews with green sukuk issuers and used expert views for data triangulation to generate the findings. A total of four green sukuk issuers participated in the interviews, and for data triangulation purposes, four expert’s opinions and views were considered. The thematic analysis technique is used to report the findings.

It was revealed that amongst the challenges encountered in the green sukuk market are shoddy green taxonomy, difficulty in identifying green assets, it is time-consuming and costly, no compelling benefits and exposure to higher-risk profiles.

This study may be influenced by observer error and observer bias. However, the researchers have taken cautious steps to overcome these issues by following strict case study methodology procedures and triangulating the qualitative research findings with views from green sukuk experts. These interventions increased the rigour and trustworthiness of the results.

This study is amongst the pioneer in Malaysia, exploring challenges in the green sukuk market. The results are relevant to governments, regulators, institutions and central banks to structure the right interventions to counter the challenges. Greater government involvement is required to strengthen the green sukuk market and to spearhead the green agenda.

The objective of this paper is to understand the success factors of mobile operators.

Explores the business practices of leading carriers in Japan, South Korea, China, Europe and the USA.

The paper finds several common characteristics in the more successful markets including a handset design and quality of service that are aligned with the operators' service concepts, effective billing systems, reasonable prices, and targeted marketing strategies. While these internal factors can be easily copied by a mobile operator, it is found that there are additional, external factors such as the existing customer base and its preferences, government policy, technological constraints and value chain dynamics that can greatly affect the transferability of a mobile operator's business model to another market.

The findings present opportunities for further research including the possibility of developing a new theory into which factors are more difficult to transfer and why.

The practical implications of this paper are that operators who wish to pursue profitable business models need to take into account the factors of a successful business model and which ones are easily transferable in their respective markets and which ones are not.

The paper is unique in that we compare the business models of mobile operators across five different countries.