Search results

The purpose of this paper is to investigate the structural, electronic and optical properties of pure zinc oxide (ZnO) and transition metal (Tm)-doped ZnO using Tm elements from silver (Ag) and copper (Cu) by a first-principles study based on density functional theory (DFT) as implemented in the pseudo-potential plane wave in CASTEP computer code.

The calculations based on the generalized gradient approximation for Perdew-Burke-Ernzerhof for solids with Hubbard U (GGA-PBEsol+U) were performed by applying Hubbard corrections U_d = 5 eV for Zn 3d state, U_p = 9 eV for O 2p state, U_d = 6 eV for Ag 4d state and U_d = 9.5 eV for Cu 3d state. The crystal structure used in this calculation was hexagonal wurtzite ZnO with a space group of P63mc and supercell 2 × 2 × 2.

The total energy was calculated to determine the best position for Ag and Cu dopants. The band structures and density of states show that Tm-doped ZnO has a lower bandgaps value than pure ZnO because of impurity energy levels from Ag 4d and Cu 3d states. In addition, Ag-doped ZnO exhibits a remarkable enhancement in visible light absorption over pure ZnO and Cu-doped ZnO because of its lower energy region and extended wavelength spectrum.

The results of this paper are important for the basic understanding of the 3d and 4d Tm doping effect ZnO and have a wide range of applications in designing high-efficiency energy harvesting solar cells.

The purpose of this study is to investigate a joint economic lot-size model with the possibility of cofinancing between members of a three-echelon supply chain (SC) including one supplier, one manufacture and one retailer. Given the differences in credit as well as differences in access to capital markets, SC members will be able to create a financial alliance to maximize the profits of each member. This study proposed a model to maximize the annuity stream of the SC by considering the financial interaction between SC members.

This joint economic lot-sizing problem was described and modeled mathematically. To evaluate the mathematical model, different scenarios were considered with (and without) the possibility of financial interaction.

It is suggested that, in addition to the goods and information flow among SC members, proper financial flow can also have an impact on the improvement of SC performance.

While previous studies consider cofinancing between members of a two-echelon SC, this paper considers a three-echelon SC including one supplier, one manufacturer and one retailer where financial cooperation between different levels of the SC in both upstream and reverse directions will be possible.

This paper presents an investigation on the development of different pattern placement strategies in robotic palletisation of box packages in the packaging industry with practical implementations for one, two, four and five block patterns with the aim of improving the operational efficiency in robotic palletisation.

The work involves considering the gripper design and maximum number of picks and various process parameters that affect the robotic implementation of pallet patterns and develops a methodology to form different patterns for a given pallet size.

The proposed methodology represents an efficient approach for pallet pattern implementation and results in reduced number of placements required for a given number of boxes per layer and reduced time for palletisation.

The paper introduces a novel technique for pallet loading problem (PLP) considering the physical aspects and restrictions encountered when using the robot and the gripper size to generate the pattern on the pallet. Traditional solutions of PLP do not consider these aspects in pattern placements.

This study aims to offer a new area of discourse by investigating the factors determining the usage of the Islamic non-bank financing product ar-rahnu (Islamic pawnbroking) among women micro-entrepreneurs in Malaysia within the framework of the informal credit market theory.

The study is based on primary data obtained by using self-administered questionnaires distributed in three states in Malaysia: Kedah, Kelantan and Terengganu. The questionnaires were distributed to a total of 750 participants, with each state contributing 250 respondents. Total number of respondents valid for data analysis was however 600.

Based on descriptive and inferential statistics by using the IBM statistical package for the social sciences and structural equation modelling analysis of moment structures, the results show that the main factor influencing women micro-entrepreneurs to use ar-rahnu is the service charge.

This study only covers three states in Malaysia and is limited to examining the use of ar-rahnu by women micro-entrepreneurs in those states.

As micro-entrepreneur s often face constraints to obtaining financial access in the formal credit market, ar-rahnu provides an alternative mode of obtaining business financing to female micro-entrepreneurs, so they can sustain their operations and even expand their businesses. The significance of such factors like service fee, as revealed in this study, indicates that managers should focus on this element when offering Islamic financial products, especially to women micro-entrepreneurs.

The informal credit market theory is frequently used in conventional studies. This paper adds Sharīʿah compliance in the context of this theory as a new area to be considered when discussing Islamic financial products.

This paper aims to examine the money laundering vulnerability of private legal practitioners in Tanzania, the involvement of these practitioners in money laundering activities and their role in preventing, detecting and thwarting money laundering and its predicate crimes.

The paper applies the “black-letter” law research approach to describe, examine and analyze the anti-money laundering law in Tanzania. It also uses the “law-in-context” research approach to interrogate the anti-money laundering law and to provide an understanding of factors impacting on the efficacy and readiness of private legal practitioners in Tanzania to tackle money laundering. The review of literature and analysis of statutory instruments and case law, reports of the anti-money laundering authorities and agencies and media reports-generated data are used in this paper. This information was complemented by data from interviews of purposively selected private legal practitioners.

Private legal practitioners in Tanzania are vulnerable to money laundering. There is an emerging evidence that indicates the involvement of some private legal practitioners in the commission of money laundering and/or its predicate crimes. The law designates the legal practitioners as reporting persons and imposes on the obligation to fight against money laundering. Law-related factors and practical challenges undermine the capacity of the legal practitioners to curb money laundering. Additionally, certain hostile perceptions contribute to the legal practitioners’ unwillingness, indifference or opposition against the fight against money laundering.

The paper underscores the need for Tanzania to reform its policy and legal frameworks to create enabling environment for anti-money laundering gatekeepers, including private legal practitioners to partake efficiently in the fight against money laundering. It also underlines the importance of incorporating the principles that govern the private legal practise to enable the practitioners to partake effectively in tackling money laundering.

This paper generates useful information to private legal practitioners, policy makers and academicians on issues relating to money laundering and its control in Tanzania and presents recommendations on possible policy and legal reforms that can be adopted and applied to augment the role of the legal practitioners in Tanzania to combat money laundering.

This paper attempts to rejuvenate waqf in the health sector by identifying and elaborating on its issues and challenges. The government budget for this sector is significant; thus, the present paper aims to provide a nongovernment budget to lessen the government's burden

This qualitative study uses structured in-depth interviews with 12 respondents to generate valuable insights and thoughts in order to frame recommendations.

The findings highlight the key themes: human resources, finance, collaboration and coordination, legal issues, basic healthcare insufficiency, data and digitalization, accountability and sustainability and infrastructure. The following are the proposed solutions: capacity building program (CBP), hybrid waqf scheme, big data connectivity, specific legal framework, refocusing and reallocating of resources for the health sector during and after the pandemic

This study focuses on Indonesia and Malaysia as the authors believe that these two countries have a lot of practice in the field. Further studies may focus on other countries, such as Pakistan.

This paper proposes potential ways to embrace government policy consideration, optimize the elaboration among productive waqf with other kinds, improve governance of and coordination among waqf institutions and increase the awareness to improve significant development.

By considering this paper's recommendations, waqf stakeholders in the healthcare system can improve the social benefits for poor and needy patients.

This study presents the latest strategic analysis of waqf, which is important for the government policy in developing waqf.

This study aims to investigate the effect of electrodeposition parameters (i.e. time and voltage) on the properties of hydroxyapatite (HA) coating fabricated on Ti6Al4V surface.

A full factorial design along with response surface methodology was utilized to evaluate the main effect of independent variables and their relative interactions on response variables. The effect of electrodeposition voltage and deposition time on HA coatings Ca/P molar ratio and the size of deposited HA crystals were examined by structural equation modeling (SEM). The formation of plate-like and needle-like HA crystals was observed for all experiments.

The results obtained showed that the higher electrodeposition voltage leads to lower Ca/P values for HA coatings. This is more significant at lower deposition times, where at a 20-minute deposition time, the voltage increased from 2 to 3 V and the Ca/P decreased from 2.27 to 1.52. Full factorial design results showed that electrodeposition voltage has a more significant effect on the size of the deposited HA crystal. With increasing the voltage from 2 to 3 V at a deposition time of 20 min, the HA crystal size varied from 99 to 36 µm.

The investigation delved into the impact of two critical parameters, deposition time and voltage, within the electrodeposition process on two paramount properties of HA coatings. Analyzing the alterations in coating characteristics relative to variations in these process parameters can serve as a foundational guide for subsequent research in the domain of calcium-phosphate deposition for implants.

This study aims to compare machine learning models, datasets and splitting training-testing using data mining methods to detect financial statement fraud.

This study uses a quantitative approach from secondary data on the financial reports of companies listed on the Indonesia Stock Exchange in the last ten years, from 2010 to 2019. Research variables use financial and non-financial variables. Indicators of financial statement fraud are determined based on notes or sanctions from regulators and financial statement restatements with special supervision.

The findings show that the Extremely Randomized Trees (ERT) model performs better than other machine learning models. The best original-sampling dataset compared to other dataset treatments. Training testing splitting 80:10 is the best compared to other training-testing splitting treatments. So the ERT model with an original-sampling dataset and 80:10 training-testing splitting are the most appropriate for detecting future financial statement fraud.

This study can be used by regulators, investors, stakeholders and financial crime experts to add insight into better methods of detecting financial statement fraud.

This study proposes a machine learning model that has not been discussed in previous studies and performs comparisons to obtain the best financial statement fraud detection results. Practitioners and academics can use findings for further research development.

Designated non-financial businesses and professions (DNFBPs) are important actors both in the formal and informal sectors owing to the nature of services they offer. The DNFBPs are key players in financial and economic development and thus are highly vulnerable to money laundering (ML) and terrorist financing (TF) risks. Globally, and indeed, within the West African region, typologies studies have indicated several instances of misuse of DNFBPs for the laundering of proceeds of crime and to a lesser extent, TF. Factors that make DNFBPs vulnerable to ML and TF in the region, include limited understanding of ML/TF risk and anti-money laundering and combating the financing of terrorism (AML/CFT) obligations, and poor implementation of AML/CFT measures by the sector. As reporting institutions, DNFBPs are required to implement appropriate measures to mitigate the ML/TF risk facing them. Mutual evaluation reports (MERs) of countries in the region noted weak implementation of AML/CFT measures by DNFBPs compares to financial institutions. These coupled with the general poor monitoring and supervision of DNFBPs for compliance, make them a weak link in member states’ AML/CFT regime. This study examined how Economic Community of West African States member states can plug the loopholes in the DNFBPs to strengthen their AML/CFT regime and thus improve their performance during mutual evaluation. This study reviewed data from the publications of Inter-Governmental Action Group against Money Laundering in West Africa (GIABA), Financial Action Task Force (FATF) and other credible sources.

This study is more of desk-review based on secondary data, including information obtained from GIABA, and FATF publications, and websites as well as information obtained from reliable sources on the internet. The authors reviewed the MERs of GIABA member states that have been assessed under the second round, especially that of Ghana, Senegal, Cape Verde, Mali and Burkina Faso, with particular focus on sections of the reports relating to preventive measures and supervision. In general, this paper adopts a policy approach with a view to explaining the importance and benefits of implementing AML/CFT preventive measures by reporting entities, especially the DNFBPs.

This study found that there is a general lack of information on the exact size of DNFBPs across member states, the risk of ML/TF associated with DNFBPs is generally identified as high across member states (albeit at different levels), the extent and level of monitoring/supervision of DNFBPs for AML/CFT compliance trails what is obtainable in financial institutions; the institutional and operational frameworks for regulating, supervising and monitoring DNFBPs are either weak or poorly defined in many member states; and the focus of AML/CFT technical assistance has been more on financial institutions than DNFBPs. Although the number of MERs reviewed for this work may be few, the findings and conclusions in the concluded MERs reflect regional peculiarities, including high informality of the economies, preponderance use of cash in transactions, diversity of DNFBPs and the general weak application of AML/CFT preventive measures by these entities, and the weak AML/CFT supervision or monitoring of DNFBPs which cut across all GIABA member states. Although efforts to address the weaknesses in the DNFBPs, including training and supervision, have commenced, in most member states, these are still at rudimentary levels.

However, this study is limited by the fact that it was desk-based review without direct inputs of industry players (DNFBPs and their supervisors).

In general, this paper adopts a policy approach with a view to explaining the importance and benefits of implementing AML/CFT preventive measures by reporting entities, especially the DNFBPs. It aims to bring to the fore the weaknesses of the DNFBPs in the implementation of AML/CFT preventive measures and therefore will be useful to national authorities who are striving toward strengthening their national AML/CT regimes and to DNFBPs who wish to protect the integrity and stability of their system.

It is imperative to mention that the weak compliance by DNFBPs, and indeed other challenges inhibiting effective implementation of preventive measures, is not peculiar to West Africa. A review of MERs of 17 African countries (eight countries in the Eastern and Southern Africa Anti Money Laundering Group region, five in GIABA region and three in the Middle East and North Africa region assessed under the current round as on October 2020, show a similar pattern of weak ratings under Immediate Outcome 4.

Sustainability represents innovative elements in determining the profitability of real estate investments, among other factors, including the green component in real estate. Evidence from the literature has pointed out that incorporating green features into residential buildings can reduce operational costs and increase the building’s value. Although green real estate is considered the future trend of choice, it is still being determined whether prospective buyers are willing to accept the extra cost of green residential investment. Therefore, this study aims to investigate the effect of housing attributes and green certification on residential real estate prices.

The impact of the housing attribute and green certification in the residential sectors was assessed using a transaction data set comprising approximately 861 residential units sold in Selangor, Malaysia, between 2014 and 2022. Linear and quantile regression were used in this study by using SPSS software for a robust result.

The findings indicate that the market price of residential properties in Malaysia is influenced by housing attributes, transaction types and Green Building Index certification. The empirical evidence from this study suggests that green certification significantly affects the sales price of residential properties in Malaysia. The findings of this research will help investors identify measurable factors that affect the transaction prices of green-certified residential real estate. These identifications will facilitate the development of strategic plans aimed at achieving sustainable rates of return in the sustainable residential real estate market.

Specifically, this research will contribute to achieving area 4 of the 11th Malaysia Plan, which pertains to pursuing green growth for sustainability and resilience. This will be achieved by enhancing awareness among investors and homebuyers regarding the importance of green residential buildings in contributing to the environment, the economy and society.

The regression model for housing attributes and green certification on house price developed in this study could offer valuable benefits to support and advance Malaysia in realising its medium and long-term goals for green technology.