Hybrid Approaches Using Decision Tree, Naive Bayes, Means and Euclidean Distances for Childhood Obesity Prediction

Muhamad Hariz Muhamad Adnan,Wahidah Husain,Nur'Aini Abdul Rashid 보안공학연구지원센터 2012 International Journal of Software Engineering and Vol.6 No.3

Influence of Big Data Analytics Capability on Innovation and Performance in the Hotel Industry in Malaysia

Muhamad Luqman KHALIL(Muhamad Luqman KHALIL ),Norzalita Abd AZIZ(Norzalita Abd AZIZ ) 한국유통과학회 2023 The Journal of Asian Finance, Economics and Busine Vol.10 No.2

This study aims to address the literature gap by examining the direct relationship between big data analytics capability, marketing innovation, and organizational innovations. Additionally, this study would examine big data analytics capability as the antecedent for both innovation types and how these relationships influence firm performance. The research model is developed based on the integration of resource-based view and knowledge-based view theories. The quantitative method is used as the research methodology for this study. Based on a purposive sampling method, a total of 115 questionnaires were obtained from managers in star-rated hotels located in Malaysia. Partial least square structural equation modeling (PLS-SEM) is utilized for the data analysis. The result shows that big data analytics capability positively affects marketing and organizational innovations. The findings show that big data analytics capability and organizational innovation positively influence firm performance. Nonetheless, the result revealed that marketing innovation is not positively related to firm performance. The findings also indicate to hotel managers the importance of big data analytic capability and the resources required to build and develop this capability. The contributions from this study enrich the literature on big data and innovation, which is particularly limited in the hospitality and tourism context.

SHP2 is Indispensable for growth factors signal transduction during bovine oocyte maturation and blastocyst development

Muhamad Idrees,Kyeong-Lim Lee,Ayman Mesalam,Seok-Hwan Song,Il-Keun Kong 한국수정란이식학회 2018 한국수정란이식학회 학술대회 Vol.2018 No.11

The aim of this study was to investigate the role of Src homology 2-containing phosphotyrosine phosphatase SHP2 in intricate signaling network invoked by oocyte to achieve cytoplasmic maturation and also blastocyst development. Activation of SHP2 regulates multicellular differentiation, proliferation and survival through numerous signal pathways. The most prominent pathway is RAS/PI3K and p-AKT signaling cascade, as a result mitogenic effect become enhanced. Oocytes were cultured in cisplatin an anticancer drug, but selective activator of SHP2 and our grouping were SOF medium alone, SOF + EGF, SOF + CISPLATIN 0.3 μM, and SOF + EGF + CISPLATIN 0.3 μM. We evaluated that EGF neutralizes the apoptotic effect of cisplatin as well as maintain the high expression of SHP2, as a result blastocyst development become boosted up. We also found that inhibition of SHP2 with its specific inhibitor PHPS1 5 μM decreases the blastocyst development and neutralizes growth factors effect. The developmental ability and quality of bovine embryos were determined by assessing their cell number, gene expression, immunofluorescence, and immunoblot. The differences in embryo development between experimental groups were analyzed by one-way ANOVA. Our results show that SHP2 have significant effect on MAP kinase pathways which expand the cumulus cells during oocyte maturation and blastocyst development as compare to inhibition of SHP2 with PHPS1. SHP2 not only transduce the signaling of epidermal growth factor but it also has a role in signal transduction of FGF and IGF. The expression of ERK, PI3K/p-AKT and mTOR was increased with EGF, but with the treatment of SHP2 inhibitor the expression of these genes become drop done. So we can conclude from these results that SHP2 is important for oocyte maturation as well as for blastocyst development.

Potency of Botryococcus braunii cultivated on palm oil mill effluent wastewater as a source of biofuel

Muhamad Maulana Azimatun Nur,Tutik Muji Setyoningrum,I Gusti Suinarcana Budiaman 대한환경공학회 2017 Environmental Engineering Research Vol.22 No.4

Indonesia is known as the largest oil palm producer in the world. However, along with the production, it generates wastes and pollution that caused the environmental problem in surrounding areas. Previous researchers reported that the high palm oil mill effluent (POME) concentration inhibited microalgae growth. However, the inhibition factor was not clearly explained by using kinetic model. This study presents kinetic models of Botryococcus braunii (B. braunii) cultivated on POME wastewater under different turbidity condition. Results showed that the growth model of Zwietering was closely suitable with experimental results. It was found that B. braunii was able to consume organic carbon from the POME wastewater on the logarithmic model. A modified kinetic model of Monod Haldane described the influence of turbidity and chemical oxygen demand on the cultivation. Turbidity of POME medium inhibited the growth rate at KI 3.578 and KII 179.472 NTU, respectively. The Lipid (39.9%), and carbohydrate (41.03%) were found in the biomass that could be utilized as biofuel source.

A Way to Further Understanding of Basic Engineering Principle by Supervising Junior High School Students through Sets of Science Experiment

Muhamad Naim,Shozo Tsuzuki,Shoichiro Fujisawa,Takao Hanabusa 한국공학교육학회 2010 공학교육연구 Vol.13 No.5

The objective of this project is to cultivate interest among junior high school students toward Science & Technology. Six simple experiments will be introduced to the participants (junior high school students) of this project which is focusing on the basic principles of engineering including law of motion, free-fall, force, energy, friction and work. Our student team has been assigned to design six set of experiment according to the principles. The experiments are easy to understand and simple to assemble by the students of age 13 to 15. Experimental manuals were written by the members using simple words complete with figure so that all the participants can understand the procedure of each experiment. In order to make sure the manuals are practically working, the experiment sets were tested and the results were compared with actual theory. As a result, we believe that the experiments can be done by the students within less supervision. The students are able to set up the experiments by using some simple equipment around them. By doing this experiments, we can further our understanding and explain better the principles of energy, force and work.

Three-Phase PWM-Switched Autotransformer Voltage-Sag Compensator Based on Phase AngleAnalysis

Muhamad Mansor,Nasrudin Abd. Rahim 전력전자학회 2011 JOURNAL OF POWER ELECTRONICS Vol.11 No.6

Many voltage sag compensators have been introduced, including the traditional dynamic voltage restorer (DVR), which requires an energy storage device but is inadequate for compensating deep and long-duration voltage sags. The AC-AC sag compensators introduced next do not require a storage device and they are capable of compensating voltage sags. This type of compensator needs an AC-AC converter to regulate the output voltage. Presented in this paper is a three-phase PWM-switched autotransformer voltage sag compensator based on an AC-AC converter that uses a proposed detection technique and PWM voltage control as a controller. Its effectiveness and capability in instantly detecting and compensating voltage sags were verified via MATLAB/Simulink simulations and further investigated through a laboratory prototype developed with a TMS320F2812 DSP as the main controller.

Stingless Bees Propolis: Production and Application in Cosmetic and Medicine Industry

Muhamad SAHLAN 한국생물공학회 2017 한국생물공학회 학술대회 Vol.2017 No.4

The Impact of Exchange Rate, Bank Indonesia Certificate and Global Indexes on the Composite Price Index (IHSG) in Indonesia

Muhamad YUNANTO,Henny MEDYAWATI 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.6

The purpose of this study is to analyze the contribution of exchange rates, Bank Indonesia Certificate (SBI), and global stock price indexes toward the Composite Stock Price Index (IHSG), and the shocks caused by the global index to the IHSG. The research variables are HSGI, rupiah exchange rate, and global stock price index, which includes NASDAQ, the Hong Kong stock price index (Hang Seng), the Japanese stock price index (Nikkei 225), and the South Korean stock price index (Kospi). The data used is monthly time-series data from 2008 to 2019. The data used in this study are secondary data obtained from Bank Indonesia publications through www.bi.go.id, the Indonesia Stock Exchange, and Yahoo Finance (finance.yahoo.com). Following the type of data used, the research steps include the unit root test, cointegration test, and estimation using the Vector Error Correction Model (VECM). Based on the results of the impulse response and variance decomposition analysis, it can be seen that the overall global index, exchange rates, and SBI interest rates contributed to the IHSG movement. Based on the analysis of variance decomposition, the percentage value of the contribution of the Hang Seng index is the biggest compared to the NASDAQ, Nikkei 225, and Kospi.

Properties of Cu2ZnSn(SxSe1x)4 thin films prepared by one-step sulfo-selenization of alloyed metal precursors

Muhamad Ikhlasul Amal,이상현,김규호 한국물리학회 2014 Current Applied Physics Vol.14 No.7

The pentenary system, Cu2ZnSn(SxSe1x)4 (CZTSSe), is a promising alternative for thin film solar cells. In this study, CZTSSe thin films were prepared using a two-stage process involving the thermal diffusion of sulfur (S) and selenium (Se) vapors into sputtered metallic precursors at approximately 450 C. The effects of the sulfur content on the composition, structure, optical and electrical characteristics of the CZTSSe thin films were investigated. The films showed a kesterite structure with a predominant (112) orientation. X-ray diffraction and Raman spectroscopy confirmed the formation of a single phase CZTSSe compound. The band gap was dependent on the sulfur content and was calculated to be 1.25 eV, 1.33 eV and 1.40 eV for CZTSSe films with a S/(S þ Se) ratio of 0.3, 0.5 and 0.7, respectively. All films exhibited ptype semiconductor properties.

Improving unmanned ground vehicle navigation by exploiting virtual sensors and multisensor fusion

Muhamad Ilyas,박상덕,백승호 대한기계학회 2014 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.28 No.11

This paper investigates techniques on improving navigation accuracy using multiple sensors mounted on a mobile platform and exploitingthe inherent characteristic of a ground vehicle that does not move along the cross-track and off the ground, often termed nonholonomicconstraints (NHC) for car-like vehicles that assume no slip or skid. The forward velocity of the vehicle is obtained using awheel encoder. The 3D velocity vector becomes observable during the normal moving state of the vehicle by using NHC, which producesone virtual sensor. Another virtual sensor is the zero-velocity update (ZVU) condition of the vehicle; when the condition is true, the3D velocity vector (which is zero) becomes observable. These observables were employed in an extended Kalman filter (EKF) update tolimit the growth of inertial navigation system error. We designed an EKF for data fusion of inertial measurement units, global positioningsystems (GPS), and motion constraints (i.e., NHC and ZVU). We analyzed the effects of utilizing these constraints on improving navigationaccuracy in stationary and dynamic cases. Our proposed navigation suite provides reliable accuracy for unmanned ground vehicleapplications in a GPS-denied environment (e.g., forest canopy and urban canyon).