Performance Analysis of a Combined Blade Savonius Wind Turbines

Sanusi, Arifin,Soeparman, Sudjito,Wahyudi, Slamet,Yuliati, Lilis Korean Society for Fluid machinery 2017 International journal of fluid machinery and syste Vol.10 No.1

The Savonius wind turbine has a lower performance than other types of wind turbines which may attract more study focus on this turbine. This study aimed to improve wind turbine performance by combining a conventional blade with an elliptical blade into a combined blade rotor. The analysis was performed on three blade models in computational fluid dynamics (CFD) using ANSYS_Fluent Release 14.5. Then the results were verified experimentally using an open wind tunnel system. The results of the numerical simulation were similar to the experimental and showed that the combined blade rotor has better dragging flow and overlap flow than the conventional and elliptical blade. Experimental verification showed that the combined blade was to increase the maximum coefficient of power ($Cp_{max.}$) by 11% of the conventional blade and to 5.5% of the elliptical blade.

Neural Network Analysis in Forecasting the Malaysian GDP

SANUSI, Nur Azura,MOOSIN, Adzie Faraha,KUSAIRI, Suhal Korea Distribution Science Association 2020 The Journal of Asian Finance, Economics and Busine Vol.7 No.12

The aim of this study is to develop basic artificial neural network models in forecasting the in-sample gross domestic product (GDP) of Malaysia. GDP is one of the main indicators in presenting the macro economic condition of a country as set by the world authority bodies such as the World Bank. Hence, this study uses an artificial neural network-based approach to make predictions concerning the economic growth of Malaysia. This method has been proposed due to its ability to overcome multicollinearity among variables, as well as the ability to cope with non-linear problems in Malaysia's growth data. The selected inputs and outputs are based on the previous literatures as well as the economic growth theory. Therefore, the selected inputs are exports, imports, private consumption, government expenditure, consumer price index (CPI), inflation rate, foreign direct investment (FDI) and money supply, which includes M1 and M2. Whilst, the output is real gross domestic product growth rate. The results of this study showed that the neural network method gives the smallest value of mean error which is 0.81 percent with a total difference of 0.70 percent. This implies that the neural network model is appropriate and is a relevant method in forecasting the economic growth of Malaysia.

Variations in Projections of Precipitations of CMIP6 Global Climate Models under SSP 2-45 and SSP 5-85

Mohammed Sanusi Shiru,김진혁,정은성 대한토목학회 2022 KSCE Journal of Civil Engineering Vol.26 No.12

This study projects precipitation over East Asia comprising of East China, South Korea, and Japan using ten Global climate models (GCM) of the Coupled Model Intercomparison Project Phase 6 (CMIP6) and their Multi-Model Ensemble (MME). The historical GCMs were assessed using statistical metrics and compromise programming for their abilities in replicating the observed precipitation in order to assess their skills in projecting precipitation relative to the MME. Linear scaling method was used in bias correcting the GCMs using Global Precipitation Climatology Center (GPCC) as reference observed data. Probability density function and mean monthly precipitation of GCMs for the different months over the period 2021 − 2060 and 2061 − 2100 were compared with those of the observed under SSPs 2-45 and 5-85. The study revealed that NorESM2-MM, MRI-ESM2-0, MME and ACCESS-ESM1-5 have the best abilities to replicate the observed precipitation in the area of study. Under SSP 2-45, spatial projections show that the changes in precipitation for 2021 − 2060 are expected to range between -32.0 − 4.0% while those for 2061 − 2100 are -46.7 − 4.4%. Under SSP 5-85, the expected changes in precipitation range from -40 to 6.6% during 2021 to 2060 while the range is -87.3 to 6.6% with the highest decreases expected for CanESM5. The MME projects the changes of -12.0 − 6.6% during this period. The mean monthly precipitations for the different months over 2021 – 2060 and 2061 – 2100 show that while some GCMs project increases in mean monthly precipitation, others projected decreases depending on the months. Study show, no model exhibits the exact features of the observed precipitation. A model’s projection skill may be independent of its ability to replicate the properties of the observed climate. Therefore, there is a need for caution in choosing GCMs for the climate projection. This study suggests the use of the MME or the other models that have closest projections to it for climatic and hydrological studies in the region.

Performance Analysis of a Combined Blade Savonius Wind Turbines

Arifin Sanusi,Sudjito Soeparman,Slamet Wahyudi,Lilis Yuliati 한국유체기계학회 2017 International journal of fluid machinery and syste Vol.10 No.1

The Savonius wind turbine has a lower performance than other types of wind turbines which may attract more study focus on this turbine. This study aimed to improve wind turbine performance by combining a conventional blade with an elliptical blade into a combined blade rotor. The analysis was performed on three blade models in computational fluid dynamics (CFD) using ANSYS_Fluent Release 14.5. Then the results were verified experimentally using an open wind tunnel system. The results of the numerical simulation were similar to the experimental and showed that the combined blade rotor has better dragging flow and overlap flow than the conventional and elliptical blade. Experimental verification showed that the combined blade was to increase the maximum coefficient of power (Cpmax.) by 11% of the conventional blade and to 5.5% of the elliptical blade.

Replicability of Annual and Seasonal Precipitation by CMIP5 and CMIP6 GCMs over East Asia

Mohammed Sanusi Shiru,Shamsuddin Shahid,채승택,정은성 대한토목학회 2022 KSCE Journal of Civil Engineering Vol.26 No.4

Global climate models (GCMs) structure is a source of uncertainty in climate change projections. Therefore, evaluation of the performances of GCMs is crucial for development of adaptation and mitigation measures and risk reduction against climate change impacts. This study quantified the performances of 10 GCMs of the Coupled Model Intercomparison Project 5 (CMIP5) and their CMIP6 equivalents in replicating precipitation over East Asia during 1975 – 2005. The CMIP5 and CMIP6 GCMs and their multi-model ensembles (MMEs) were annually and seasonally compared with the Global Precipitation Climatology Centre (GPCC) precipitation. Compromise Programming was used to rank GCMs by aggregating their scores obtained using statistical performance indices. Taylor diagram was used to assess their relative performances and GCMs' ability to replicate seasonal precipitation distribution was evaluated. Results revealed most CMIP6 GCMs' have better replicability of GPCC precipitation than CMIP5 GCMs. The MME mean of the CMIP6 showed better replicability of annual and seasonal GPCC precipitation than that of CMIP5. The CMIP6 MME also showed efficiency in simulating the seasonal precipitation distribution over East Asia. This study indicates improvements of some CMIP5 GCMs in their CMIP6 equivalents over East Asia. Findings from this study can be significant to policy makers and engineers in reducing the uncertainties in prediction of events such as floods and droughts.

The Syntactic Position of Negative Markers in Idoma and Tiv: A Deviation from Language Universal Validity

Issa Olarongbe Sanusi,Lydia Damilola Oyewole 세종대학교 언어연구소 2019 Journal of Universal Language Vol.20 No.1

Syntacticians and typologists have carried out a cross-linguistic study of the syntactic position of the negative marker with respect to the verb in a given sentence (Greenberg 1966 and Dryer 1988). The objective of this study is to carry out a comparative study of the negative marking strategies in both Idoma and Tiv languages, spoken in Benue State, Nigeria. Given the fact that the two languages belong to the same genetic family (Benue -Congo) and share the same basic word order (subject, S; object, O; verb ,V); the study is intended to find out the extent to which the negative marking strategies in the two languages conform to the assumption under language universals. The assumption is that there is an overall tendency for the negative marker to precede the main verb in SVO languages. That is, a location between the subject and the verb. Since none of the two writers speaks any of the two languages, data were collected through interview method. And the frame technique method was adopted in presenting structured grammatical sentences in English to native speakers of the two languages to translate to both Idoma and Tiv. The Principles and Parameters approach was employed for our analysis in this study. Our findings revealed that what obtains in both Idoma and Tiv negative constructions is contrary to the assumption under language universals. Instead of preceding the main verb, the negative markers occur at the sentence-final position, in each of the two languages. Notwithstanding the deviation from the language universal validity, we have discovered a high degree of similarities in the syntactic behaviour of negative markers in both Idoma and Tiv languages.

Ballistic study of alumina ceramic-steel composite for structural applications

Olawale M. Sanusi,Olatunde A. Oyelaran,Jubril A. Badmus 한양대학교 세라믹연구소 2020 Journal of Ceramic Processing Research Vol.21 No.4

The protection of security/military personnel and their structural facilities such as vehicles, aircraft and other securityhardware continues to attract research attention as trade-off between weight and protection lingers. Ceramics are employedin lightweight armour system for its ballistic efficiency and weight advantage; meanwhile, it is comparatively expensive. Thisresearch examined the effectiveness of sintered alumina, developed from corundum, as a laminate component of ceramic-steelcomposite for structural armour applications. Both armour steel and medium carbon steel were separately impacted by 7.62 ×51 mm armour-piercing (AP) projectile before laminated with the prepared sintered ceramic in evaluating its ballisticresistance. The mechanical properties of the sintered ceramic compete favourably with the commercial CoorsTEK® sinteredceramics. Subsequently, varying target configurations of the ceramic and medium carbon steel composites were studied andanalyzed against the same projectile in accordance with NIJ Standard-0108.01. The composite structure, depending on theconfiguration, displays different forms of failure modes. The high-impact experimental study confirmed the protectivecapability of the sintered ceramic by its severity interaction against projectile and delay of projectile penetration when usedas a laminate component plate.

Return-on-Investment Measurement and Assessment of Research Fund: A Case Study in Malaysia

Nur Azura SANUSI,Noor Hayati Akma SHAFIEE,Nor Ermawati HUSSAIN,Zuha Rosufila ABU HASAN,Mohd Lazim ABDULLAH,Nor Hayati SA’AT 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.9

This study estimates the financial value of return on investment (ROI) of research funds. Four simulation estimations are employed to measure ROI finance value that considers the outputs, outcomes, impacts and total ROI from the allocation input received. Research outputs, outcomes, and impacts can be quantitatively measured based on improvements to existing systems. In terms of input, the Malaysian government has allocated MYR301,350,000 for fundamental research in the 2021 budget compared with 2019, up 9.5 percent from 2019. It brings up the question: To what extent does the input of research funds allocated by the government yield a good return in outputs, outcomes, and impacts to the academic community, society, and country? The result of total ROI shows around MYR7 return is generated by researchers for each Malaysian ringgit channeled by the funder. More specifically, for a research project, it is more difficult to produce impacts and outcomes compared to research outputs. The positive return is evidence that all the allocated funds are beneficial to the stakeholders. The government can apply this approach in calculating ROI for evaluation and fund allocation to universities. Furthermore, the positive financial value of research output, outcome, and impact automatically contribute to a positive innovation environment in Malaysia.

The Mathematical Operations in Bàtɔ̀nū Numeral System

Issa O. Sanusi,Lateefat Oluwatosin Yusuf 세종대학교 언어연구소 2018 Journal of Universal Language Vol.19 No.1

This paper examines the morphological properties of Bàtɔ̀nū numerals. The primary aim of the paper is to investigate the mathematical operations involved in the Bàtɔ̀nū numeral system. Based on this, the study has the following objectives: To show a descriptive analysis using the lexical phonology and morphology approach in the derivational processes of the numeral system, to show the relevant constraints or imperatives for well-formedness (addition, multiplication, subtraction and conjunction), to examine the representation of number in quality and amount, in line with the system of forming complex numbers and counting operations, finally, to determine the patterns and also the agreed method of counting in Bàtɔ̀nū. The study adopted Mohanan‟s (1982) and Kiparsky‟s (1982a) lexical phonological and morphological theories based on their problem-solving effectiveness and their reliability in handling African language data. Data for the study were generated from both primary and secondary sources. The informant method was adopted in collecting data, through the use of frame technique. The study concluded that Bàtɔ̀nū employed subtractive mechanism in the formation of numeral system. The language uses productively the additive element “kà”1 meaning „and‟ in adding other base numerals. Generally speaking, it could be observed that money counting system in Bàtɔ̀nū employs the mathematical operations of addition, subtraction and multiplication in order to achieve simplicity in the counting system.

Effects of Asset Diversification and Human Capital Efficiency on Bank Performance: Evidence from Asian Countries

Suryaning BAWONO(Suryaning BAWONO ),Anwar SANUSI(Anwar SANUSI ),Bambang SUPRIADI(Bambang SUPRIADI ),Boge TRIATMANTO(Boge TRIATMANTO ),Eny Lestari WIDARNI(Eny Lestari WIDARNI ) 한국유통과학회 2023 The Journal of Asian Finance, Economics and Busine Vol.10 No.1

This study seeks to determine if the efficiency of bank human resources, as played by human capital, impacts the performance and diversification of banks. This study uses secondary data from data obtained from 385 commercial banks in 33 countries in Asia during the 2010-2020 period with the diversification analysis method. We use the Z-score to measure the amount of standard deviation that must be from earnings (ROAA). We examined it using the Tobit regression technique. According to the regression estimation results, human capital has a significant role in the performance and effective diversification of Asian banks. The human capital efficiency coefficient (HCE) is significantly negative with the cost-to-income ratio (CTIR) and significantly positive with Profitability, Financial Stability, and cost efficiency score. The level of efficiency of human resources has an effective role in increasing human capital which has an impact on bank diversification and performance. The development of human resources in a human capital framework plays an important role in the diversification and improvement of bank performance. Human capital has a significant role in the performance and effective diversification of Asian banks. The level of efficiency of human resources has an effective role in increasing human capital which has an impact on bank diversification and performance.