Machine Learning and Finance: A Review using Latent Dirichlet Allocation Technique (LDA)

The aim of this paper is provide a first comprehensive structuring of the literature applying machine learning to finance. We use a probabilistic topic modelling approach to make sense of this diverse body of research spanning across the disciplines of finance, economics, computer sciences, and decision sciences. Through the topic modelling approach, a Latent Dirichlet Allocation Technique (LDA), we can extract the 14 coherent research topics that are the focus of the 6,148 academic articles during the years 1990-2019 analysed. We first describe and structure these topics, and then further show how the topic focus has evolved over the last two decades. Our study thus provides a structured topography for finance researchers seeking to integrate machine learning research approaches in their exploration of finance phenomena. We also showcase the benefits to finance researchers of the method of probabilistic modelling of topics for deep comprehension of a body of literature, especially when that literature has diverse multi-disciplinary actors

Green Intellectual Capital And Green Supply Chain Performance: Does Big Data Analytics Capabilities Matter?

In light of global environmental concerns growing, environmental awareness within firms has become more important than before, and many scholars and researchers have argued the importance of environmental management in promoting sustainable organizational performance, especially in the context of supply chains. Thus, the current study aimed at identifying the impact of the components of green intellectual capital (green human capital, green structural capital, green relational capital) on green supply chain performance in the manufacturing sector in Jordan, as well as identifying the moderating role of big data analytics capabilities. To achieve this aim, we developed a conceptual model of Structural Equation Modelling-Partial Least squares and tested through the Smart-PLS software on a sample of 438 respondents. Empirical results showed that each of the components of green intellectual capital and big data analytics explains 71.1% of the variance in green supply chain performance and that all components of green intellectual capital have a statistically significant impact on green supply chain performance. The results also revealed that the relationship between green relational capital and green supply chain performance is moderated through big data analytics capabilities. Finally, this study made a theoretical and managerial implications to the supply chain literature and industry

A REVIEW ON THE USE OF VEGETABLE OIL AND ITS WASTE IN CONSTRUCTION APPLICATIONS

The generation of waste materials is causing an impact on the environment due to many reasons including the effect on human health and decrease in landfill space. Of these waste materials is the waste cooking oil. There are large amounts of waste vegetable oil generated in the world and most of it is disposed of in the sewer system which can cause problems when treating wastewater. This paper is a review of literature on the use of vegetable oil (VO) and waste vegetable oil (WVO) as chemical admixtures in construction materials. The construction materials include mainly concrete and pavement. The properties examined were fresh, mechanical and durability properties. Fresh properties included slump test while the mechanical properties comprised compressive and flexural strength as well as shrinkage. The durability and durability related properties consisted of water absorption both by total immersion and capillary action, carbonation and efflorescence. This review suggests that virgin vegetable oil and its waste has the potential to be used as chemical admixtures in construction materials to improve their workability water resistance

THE PREVALENCE OF HELICBACTER PYLORI AMONG PATIENTS COMPLAINING FROM ABDOMINAL PAIN

Helicobacter pylori has been associated with a number of gastrointestinal disorders including gastritis, peptic ulcer disease, gastric adenocarcinoma and gastric mucosa-associated lymphoid tissue (MALT) lymphoma. The present study was conducted to determine the prevalence of Helicobacter pylori infection among patients complaining from abdominal pain and visiting internal medicine clinics. It was also purposed to investigate the relationship between both age and sex with Helicobacter pylori infection. A retrospective study was conducted and included 101patients with abdominal pain. The results showed that the prevalence of IgG against Helicobacter pylori infection is 85%, while about 38.6% of cases were positive for IgA against Helicobacter pylori. No significant relationships were found for IgG, IgA with age and sex (p value >0.05). Taken together, the study showed high prevalence of H. pylori infection among patients complaining of abdominal pain. H.pylori infection is not associated significantly with age and sex

User acceptance and adoption of smart homes: A decade long systematic literature review

This survey aims to provide a coherent and bibliometric overview of the theories and constructs employed in smart homes acceptance and adoption literature. To achieve the study aims, we con-ducted a systematic search for every article related to the SH concept, services and applications, user acceptance and adoption, and integrated IoT home appliances and devices, in 10 major library databases, namely, IEEE Digital Library, ACM Digital Library, Association for Information Systems (AIS), Elsevier, Emerald, Taylor and Francis, Wiley InterScience, Springer, Inderscience, and Hindawi. These databases contain literature focusing on smart home adoption using IoT tech-nology. 40 research articles of journal and peer-reviewed conferences were found relating to our research objective, presented and distributed chronologically, by publisher, country, theory and model, key construct, and with full bibliometrics for each article. Additionally, this survey includes a word cloud and a taxonomy of the entire factors used to understand users’ acceptance and adoption of smart homes in different contexts and applications. This study has many ad-vantages in covering the current research gap in the literature and also the researchers identify theoretical and practical research implications, research limitations, and recommendations for improving the acceptance and usage of smart homes literature

Bioassays activity and FT-IR analysis of clinacanthus nutans (Burm F.) lindau leaves extracts

Objectives: The present study was designed to investigate the antidiabetic and antioxidant activities of the different solvents extracts of Clinacanthus nutans (Burm. F) Lindau leaves through different bioassays as well as to identify the functional group(s) responsible for the particular bioactivity through Fourier transform infrared (FT-IR) spectroscopy. Design and method: Mature leaves of C. nutans were collected, oven dried at 40 °C, powdered, and extracted in 80% hydro-methanol to obtain crude extract. This extract was then subjected to liquid to liquid partition to obtain hexane, ethyl acetate, butanol and aqueous extracts. All the extracts were then analysed for their bioactivity through various bioassays which include anti-oxidant (DPPH and FRAP) assay, xanthine oxidase and α-glucosidase inhibitory assays. FTIR analyses for the qualitative identification of bioactive compounds was then carried out to all the extracts. Results: Bioactivity analyses of the plant’s leaves extracts on anti-oxidant (DPPH and FRAP) assay, xanthine oxidase and α-glucosidase inhibitory assays revealed that the hexane extract was highly active against α-glucosidase. Meanwhile ethyl acetate exhibited average activity in DPPH scavenging and xanthine oxidase inhibitory assays. Highest FRAP value was exhibited by ethyl acetate extract compared to others. Interestingly, FT-IR spectra analyses of each extract confirmed the presence of different functional groups that may have contributed to the various biological activity. Conclusion: The results of the present study produced the FTIR spectrum profile for the vulnerable medicinally important plant C. nutans (Burm. F) Lindau that further confirms its medicinal values. Hence, C. nutans leaves extract is medicinally potent that may serve essentially in the development of new pharmaceuticals for natural plant-based medicine. Keywords: Clinacanthus nutans (Burm. F) Lindau, DPPH, FRAP, xanthine oxidase, α-glucosidase, FTIR, active principle

The impact of capital structure on Islamic Finance Development Indicador (IFDI): A cross-country analysis

The aim of this paper is to examine the effect of the capital structure on the financial development of Islamic banks. To measure Islamic financial development, we use the country-level Refinitiv Islamic Finance Development Indicator® (IFDI) during the years 2014 to 2019. The global or combined IFDI score is made up of five performance dimensions that are considered by Islamic investors: Quantitative Development, Governance, Corporate Social Responsibility, Awareness and Knowledge. Using a sample of 105 banks, covering banking systems in 19 Muslim-majority countries, the study uses a Two-Stage least squares (2SLS) regression to examine the banks\u27 financial development determinants to control IFDI\u27s reverse causality for capital structure. Aftercontrolling the macroeconomic environment, financial market structure and taxation, the results indicate that the development of banks responds positively to an increase in equity (capital ratio). The result is consistent with the signaling theory, which predicts that the best performing banks will reliably transmit this information through higher capital. The non-monotonic relationship found between financial development on shareholders \u27equity and banks\u27 capital ratios suggests that issues of shares with low capital ratios (less than 48.42%) are expensive and have a negative effect on their equity indicator. development.On the other hand, well-capitalized bank managers are advised to trust equity when faced with the decision to raise capital, as the capital ratio begins to positively affect their financial development. This study aimed to fill the gap between the capital structure of Islamic banks and their relationship with a five-dimensional indicator. Future research, however, could confront the capital structure of banks with their profitability or profitability (conventional measures and used by Western banks), as well as analyze the effect of each of the dimensions that make up the IFDI, by bank or by country on decision of their structures

Collaboration, wealth and value creation, SMEs’ halal products communities, and information systems

This paper takes the form of a general review. It introduces the notion of government-industry collaboration and information sharing in the Halal industry that work together for achieving common goals such as in economic, health, environmental, and social well-being – moving towards making living more meaningful, productive, fruitful and profound. Technological empowerment – in particular inter-organizational information systems (IS) and information sharing – is regarded as the key driver for supporting a sustainable economic development at the global, regional and local levels. Through IS, it is viable and essential to establish a global knowledge base, shared, used, enhanced and contributed to by a variety of experts and professionals throughout the world in different fields toward achieving common goals. The paper raises awareness of relevant government-industry collaboration initiatives, leveraging on the strategic use of IS to promote individual and community growth as well as to facilitate sustainable development. As there are five main components of an IS – hardware, software,data, procedures/processes, and people – this also mean that many different skills and effective change management programs are required to ensure users’ acceptance, leadership commitment and business processes between organizations are improved in ensuring ISs are effective in delivering the business goals of participating partners and collaborators

Absorption and Desorption of Hydrogen in Metal Hydrides

The purpose of this project is to study the reaction rate during the absorption process of hydrogen in metal hydrides. Magnesium Hydride (MgH2) was chosen to be the metal hydride material for the storage medium. A car was modelled to calculate the theoretical consumption of hydrogen fuel during an hour drive at a constant cruising speed. The reaction equilibrium constant was derived from Vant Hoff equation with variable values of operating conditions. Then, the rate equation role was to determine the reaction rate of the absorption process of hydrogen by magnesium. This report contains new aspects, which show the conditions of obtaining hydrogenation rates and represents new approach of improvement of hydrogen absorption process in light metals, such as magnesium, that can provide promising results for the hydrogen storage applications