Search results

The paper aims to propose a new mathematical model for allocation and scheduling of vessels at multiple marine container terminals of the same port, considering the access channel depth variations by time of day.

This paper proposes a new mathematical model for allocation and scheduling of vessels at multiple marine container terminals of the same port, considering the access channel depth variations by time of day. The access channel serves as a gate for vessels entering or leaving the port. During low-depth tidal periods the vessels with deep drafts have to wait until the depth of the access channel reaches the required depth.

A number of numerical experiments are performed using the operational data collected from Port of Bandar Abbas (Iran). Results demonstrate that the suggested methodology is able to improve the existing port operations and significantly decrease delayed vessel departures.

The contribution of this study to the state of the art is a novel mathematical model for allocation and scheduling of vessels at multiple terminals of the same port, taking into consideration channel depth variations by time of day. To the best of the authors’ knowledge, this is the first continuous berth scheduling linear model that addresses the tidal effects on berth scheduling (both in terms of vessel arrival and departure at/from the berth) at multiple marine container terminals.

The aim of this study is to investigate the effect of web - based disclosure on the cost of debt for the MENA region setting.

The sample of this paper consists of 237 MENA listed non-financial companies for the year 2017. Multiple regression models were used to examine the impact of online disclosure on the cost of debt. Content analysis is used to measure the extent of web-based disclosure.

The results reveal that there is a negative and significant association between the web-based disclosure and the company’s cost of debt. These results support the hypothesis of the economic utility of the information disclosed on the website for creditors in this region.

The results of the study have important implications for managers in the MENA region. It is necessary for managers to improve the company’s transparency through web-based disclosure. The companies must benefit from the different technologies offered by the Internet in order to offer to the creditors unlimited access to up to date information. In fact, web-based disclosure may mitigate the information asymmetry, the uncertainty of creditors and, consequently, reduces the cost of debt. 10; 10;Moreover, the results of the study provide empirical evidence for the advantages of voluntary web-based disclosure. The results highlight the importance to companies and regulators of understanding the benefits of using the website as a means of information disclosure. The regulators in MENA countries can rely on these results to establish suitable policies to improve the quality of web-based disclosure. The regulators need also to put in rules in relation to the online disclosure. In fact, an understanding of web-based disclosure is important for regulators and companies. Given the positive effect of online disclosure (the reduction of the cost of debt), knowledge about the economic consequences of web-based disclosure would enable companies in the MENA region to optimize their online disclosure policies.

This study, added to the existing literature by examining the consequences of online disclosure practices in MENA countries. Most previous studies conducted in this region were limited to analyzing the determinants of the company’s web-based disclosure. This paper would extend the literature on the online disclosure practices by investigating the association between these practices and the cost of debt in a developing economics: the MENA region. Previous studies were limited to testing this association only in developed countries.

The Iranian patients’ rights charter defines patient rights as a reflection of fundamental human rights in the field of medicine and incorporates all elements of patient rights accepted in international texts. The purpose of this paper is to study the way in which diabetes patients’ rights are being exercised in everyday hospital practice in Birjand, Iran.

A cross-sectional study design was used in 2014. The sample size was estimated 150 patients, out of which 108 diabetes patients completed questionnaire. The questionnaire of diabetes patients’ perspectives on the patients’ rights was used to collect data. The questionnaire consists of 22 questions. Data entry and analysis were carried out using SPSS software (version 22). Descriptive and inferential statistics were calculated with all survey items and total scores, as well as demographic data.

The response rate was 72 percent. Overall, the mean score percentage of diabetes patients’ perspectives on the patients’ rights was 74.04± 8.4. Furthermore, statistical significant differences were found among diabetes patients in relation to patients’ perspectives on the patients’ rights according to highest level of education (F=16.52, p=0.002), their habitat(t=3.49, p=0.001), age groups (F=18.70, p=0.0001) and the duration of the disease (F=5.16, p=0.007). The results showed that no statistically significant differences were observed among diabetes patients in relation to diabetes patients’ perspectives on the patients’ rights according to their gender (F=1.57, p=0.12) and marital status (F=1.56, p=0.09).

Clinicians can provide care based on patients’ rights, and their knowledge of patients’ rights needs to be evaluated. Educational courses, leaflets, booklets and posters can be helpful in this regard. In addition, professional organizations and the Ministry of Health need to be more sensitive to this issue.

This paper aims to study the impacts of viscous dissipation, thermal radiation and Joule heating on squeezing flow current and the heat transfer mechanism for a magnetohydrodynamic (MHD) nanofluid flow in parallel disks during a suction/blowing process.

First, the governing momentum/energy equations are transformed into a non-dimensional form and then the obtained equations are solved by modified Adomian decomposition method (ADM), known as Duan–Rach approach (DRA).

The effect of the radiation parameter, suction/blowing parameter, magnetic parameter, squeezing number and nanoparticles concentration on the heat transfer and flow field are investigated in the results. The results show that the fluid velocity increases with increasing suction parameter, while the temperature profile decreases with increasing suction parameter.

A complete analysis of the MHD fluid squeezed between two parallel disks by considering Joule heating, thermal radiation and adding different nanoparticles using the novel method called DRA is addressed.

This paper aims to identify the unidimensionality and reliability of 84 factors that influence the performance of construction projects and develop a confirmatory factor analysis (CFA) model.

The study adopted a deductive research approach and started by identifying the positive factors that influence construction project performance. This was followed by the modification of the identified factors. After that, a questionnaire was developed out of the factors for data collection. Exploratory factor analysis was used to establish the factor structure of the positive factors, and this was verified using CFA afterwards. A model fit analysis was performed to determine the goodness of fit of the hypothesised model, followed by the development of the confirmatory model.

The study demonstrated substantial correlation in the data, sufficient unidimensionality and internal reliability. In addition, the estimated fit indices suggested that the postulated model adequately described the sample data.

The paper revealed that performance can be enhanced if stakeholders identify and leverage the positive factors influencing performance. The paper suggests that project stakeholders, particularly government, project owners, consultants and construction firms, can improve project performance by critically examining economic and financial systems (EFS), regulation and policy-making systems (RPS), effective management practices (EMP) and project implementation strategies (PIS).

The contribution of this paper to the present literature is identifying the positive factors and developing the confirmatory factor model. The model comprised 42 positive variables under four indicators: EMP, RPS, PIS and EFS.