Cagayan de Oro, Philippines

Mindanao University of Science and Technology
Cagayan de Oro, Philippines

Mindanao University of Science and Technology commonly known as MUST is a higher education institution in the Philippines. It was known as Mindanao Polytechnic State College until 7 January 2009 when it has achieved its university status after a long odyssey from its humble beginnings as a tradeschool in 1927.The university offers graduate and undergraduate degrees in engineering, science and technology with over 40 bachelor's degree programs, 16 master's degree programs and 3 doctors degree programs.Its main campus is located in Lapasan, Cagayan de Oro City, with satellite campuses in Jasaan, Misamis Oriental, Oroquieta city and Panaon, Misamis Occidental. Wikipedia.

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Sequera M.S.,Mindanao University of Science and Technology | Guirnaldo S.A.,Mindanao State University - Iligan Institute of Technology | Permites I.D.,Mindanao Sanitarium and Hospital
Journal of Theoretical and Applied Information Technology | Year: 2017

Breast cancer has been one of the major causes of death among women since the last ten years and it has become an emergency for the healthcare systems of industrialized nations. This disease became the most common cancer among women. Today, detecting breast cancer at its early stage is the primary factor that will increase the chances of survival and will provide more options for treatment. Because of this, the proponent develops a computer – aided detection and classification system for mammographic abnormalities. These abnormalities are limited only with microcalcification and masses. These abnormalities are classified as to benign or malignant.The system is divided into three modules: (1) detection of microcalcification, (2) classification of microcalcification and (3) classification of masses. The proponent used a Naïve Bayes Classifier in detecting microcalcification and Fuzzy Logic System for classification of the severity of abnormalities. The data used were obtained from the Mammographic Image Analysis Society (MIAS) database. © 2005 - 2017 JATIT & LLS. All rights reserved.

Labis P.E.,Cagayan Electrical Power and Light Co. Inc. | Visande R.G.,Liceo de Cagayan University | Pallugna R.C.,Mindanao University of Science and Technology | Caliao N.D.,Mindanao University of Science and Technology
Renewable and Sustainable Energy Reviews | Year: 2011

The traditional approach in electric power generation is to have centralized plants distributing electricity through an extensive transmission and distribution network. Distributed generation (DG) provides electric power at a site closer to the customer, eliminating the unnecessary transmission and distribution costs. In addition, it can reduce fossil fuel emissions, defer capital cost, reduce maintenance investments and improve the distribution feeder voltage conditions. This study calculates and compares the cost of line losses, cost of transmission and distribution in the case of laying additional transmission line, the cost of carbon dioxide (GHG) emission in the case of fossil-fuel based distributed generation, and the cost of using renewable distributed generation in providing additional supply of power to a small rural electric utility. Results show that optimally located DG which is renewable in nature is economical in the long run when factors of fuel costs and carbon dioxide emissions are taken into account. The PV plant is the most economical because it can be moved to optimal location, followed by the wind and hydro, which are geographically fixed. © 2011 Elsevier Ltd. All rights reserved.

Jerusalem J.G.,Mindanao University of Science and Technology | Galarpe V.R.K.R.,Mindanao University of Science and Technology
Journal of Chemical Health and Safety | Year: 2015

The study focused on the occupational exposure of gaseous formaldehyde (HCHO) in selected hospital-histopathology laboratories in Cagayan de Oro. This was carried to estimate the potential levels of HCHO during gross-cutting period using absorbent medium between two time intervals. Modified passive sample set-ups of 2,4-dinitrophenylhydrazine (DNPH) and DNPH-coated silica were used for air sample collection between 1h and 3h intervals and were analyzed spectrometrically. Infrared (IR) analysis for DNPH-coated silica sample showed relevant peaks of the known IR spectra of formaldehyde hydrazone: 1,600-1,636cm-1 (CN); 1,000-1,350cm-1 (CN); 2,945-2,900cm-1 (aliphatic stretch); 3,218-3,080cm-1 (NHN); and 880-900cm-1 (meta disubstituted aromatic). Generally, gaseous HCHO concentrations in three histopathology laboratories during its gross-cutting period exceeded the recommended exposure ceiling limits of American Conference of Industrial Hygienists (ACGIH) and United States Department of Labor-Occupational Safety and Health Administration (USDOL-OSHA) (0.3-0.75ppm). Absorbing efficiency of DNPH set-up was statistically different from that of DNPH-coated silica set-up. Increased concentration was observed for the 3h interval using DNPH-coated (0.93±0.32ppm (Hospital A), 0.80±0.59ppm (Hospital B), and 1.03±0.36ppm (Hospital C)). Thus, the installation of exhausts ventilation system was seen necessary to minimize occupational exposure. © 2014 Division of Chemical Health and Safety of the American Chemical Society.

Pabilona L.L.,Mindanao University of Science and Technology | Villanueva E.P.,Mindanao State University
IOP Conference Series: Materials Science and Engineering | Year: 2015

This study is a computer simulation of the temperature profiles and experimental investigation of three 100 mm x 50 mm x 18 mm single mini channel condensers with hydraulic diameters of 3 mm, 2 mm, and 1mm. The mini channels which were made of copper were designed, fabricated and tested. Each unit was connected in a vapor compression cycle with R-134a as the refrigerant. The average refrigerant mass flow rates were varied from 1.296 - 69.471 g/s, and the average inlet and outlet condenser pressure variations were 102.5 - 121.8 kPa and 101.74 -121.23 kPa, respectively. Each condenser was placed inside a mini wind tunnel system where forced draft air was introduced to initiate convective heat transfer. Each condenser was tested and data were gathered every five minute interval for one hour using a Lab View Software. Computer simulations on the flow process were conducted using Solid Works software. The experimental results presented the inlet and outlet condenser pressures, and pressure drops. The experimental heat transfer coefficients were calculated at different mass fluxes during condensation. The values ranged from 3900 to 5200 W/m2-°K for the 3 mm, 2600 to 9000 W/m2-°K for the 2 mm, and 13 to 98 W/m2-°K for the 1 mm. The heat transfer coefficients calculated from experiments were then compared with the computed values using the correlations developed by Dittus-Boelter and Lee-Son. The results showed increasing deviation as the diameter decreased. The discrepancies could be attributed to the appropriateness of the Dittus-Boelter and Lee-Son correlations in small diameter channels, complexities in the flow process which involved two phase flow heat transfer in very small tubes, and the difficulties in attaining very accurate measurements in small channels.

Pachica A.O.,Mindanao University of Science and Technology | Bernardo J.B.L.,Mindanao University of Science and Technology
International Journal of Applied Engineering Research | Year: 2016

In an academic institution environment, students and employees need to wait for a long time for their transactions to be processed especially during payment and assessment. In this study, a middleware application had been developed for academic institution services utilizing Near Field Communication (NFC) technology. Users of this application need to load up their NFC-enabled ID card and just simply tap the loaded card to the NFC reader attached to the computer terminal upon paying of food bought at the academic institution’s cafeteria, thus, reduced contact time for payment transaction. The loading and reloading of NFC-enabled ID card is also done in the academic institution’s cafeteria. In addition, a mobile application was also developed in this study in order for the parents of the user to download such application in their android smartphone to monitor the payment and load transactions of the users. Based on the evaluation results, it had been found out that NFC middleware and mobile application had positive impact in terms of fast payment transaction. © Research India Publications.

Obsequio-Namoco S.I.,Mindanao University of Science and Technology
Pakistan Journal of Nutrition | Year: 2016

Vast information on health literacy is widely available with the emergence of media accessibility. However, do the adolescents effectively utilize this information especially in their choice of food to eat? Adolescence is a vital stage in the growing up years because it is the period of physical, psychological and social maturing from childhood to adulthood, hence, optimum health is imperative. These adolescents spend most of their waking up hours at school. Therefore, educators play a vital role in connecting the gap. This study involved 1364 public high school students from the seven National High Schools of East II District in Cagayan de Oro City. The researcher surveyed on the available snack items sold among school canteens, the prevalent food bought by students and their reasons for buying such foods. It was found out that the food frequently consumed by students do not meet the minimum required energy and nutrient intake for their age and that price and palatability were the primary criteria for food choice. The nutrient value of the food is the least factor that students consider. This paper discusses the recommendations on the need to integrate the basic health information to make appropriate health decisions into the instruction. © Asian Network for Scientific Information, 2016.

Hamoy E.,Mindanao University of Science and Technology | Confesor M.N.,Mindanao State University - Iligan Institute of Technology
IOP Conference Series: Materials Science and Engineering | Year: 2015

We report on our experimental investigation of the dynamics of a passive tracer in a bath of active self-propelling granular particles. We found a caging like dynamics of the passive tracer such that for low active particle concentrations the passive tracer exhibits longer periods of inactivity. For increasing active particle concentration the occurrence of short period inactivity increases.

Saculinggan M.,Mindanao University of Science and Technology | Balase E.A.,Capitol University
Journal of Physics: Conference Series | Year: 2013

Most statistical tests such as t-tests, linear regression analysis and Analysis of Variance (ANOVA) require the normality assumptions. When the normality assumption is violated, interpretation and inferences may not be reliable. Therefore it is important to assess such assumption before using any appropriate statistical test. One of the commonly used procedures in determining whether a random sample of size n comes from a normal population are the goodness-of-fit tests for normality. Several studies have already been conducted on the comparison of the different goodness-of-fit(see, for example [2]) but it is generally limited to the sample size or to the number of GOF tests being compared(see, for example [2] [5] [6] [7] [8]). This paper compares the power of six formal tests of normality: Kolmogorov-Smirnov test (see [3]), Anderson-Darling test, Shapiro-Wilk test, Lilliefors test, Chi-Square test (see [1]) and D'Agostino-Pearson test. Small, moderate and large sample sizes and various contamination levels were used to obtain the power of each test via Monte Carlo simulation. Ten thousand samples of each sample size and contamination level at a fixed type I error rate α were generated from the given alternative distribution. The power of each test was then obtained by comparing the normality test statistics with the respective critical values. Results show that the power of all six tests is low for small sample size(see, for example [2]). But for n = 20, the Shapiro-Wilk test and Anderson-Darling test have achieved high power. For n = 60, Shapiro-Wilk test and Liliefors test are most powerful. For large sample size, Shapiro-Wilk test is most powerful (see, for example [5]). However, the test that achieves the highest power under all conditions for large sample size is D'Agostino-Pearson test (see, for example [9]). © Published under licence by IOP Publishing Ltd.

Caliao N.D.,Mindanao University of Science and Technology
Renewable Energy | Year: 2011

Today, many countries are integrating large amount of wind energy into the grid and many more are expected to follow. The expected increase of wind energy integration is therefore a concern particularly to transmission grid operators. Based on the past experience, some of the relevant concerns when connecting significant amount of wind energy into the existing grid are: fault ride through requirement to keep wind turbines on the grid during faults and wind turbines have to provide ancillary services like voltage and frequency control with particular regard to island operation.While there are still a number of wind turbines based on fixed speed induction generators (FSIG) currently running, majority of wind turbines that are planned to be erected are of variable speed configurations. The reason for this is that FSIG are not capable of addressing the concern mentioned above. Thus, existing researches in wind turbines are now widely directed into variable speed configurations. This is because apart from optimum energy capture and reduction of mechanical stress, preference of these types is also due to the fact that it can support the network such as its reactive power and frequency regulation. Variable wind turbines are doubly fed induction generator wind turbines and full converters wind turbines which are based on synchronous or induction generators.This paper describes the steady state and dynamic models and control strategies of wind turbine generators. The dynamic models are presented in the dq frame of reference. Different control strategies in the generator side converter and in the grid side converter for fault ride through requirement and active power/frequency and reactive/voltage control are presented for variable speed wind turbines. © 2011 Elsevier Ltd.

Caliao N.D.,Mindanao University of Science and Technology
Journal of Renewable and Sustainable Energy | Year: 2011

Small signal analysis of the fully rated converter wind turbine connected to a large power system was undertaken. The dynamic behaviour of the fully rated converter wind turbine was investigated using eigenvalue analysis. Eigenvalue analysis was undertaken to determine the influence of the network short circuit level on the networks dominant eigenvalues. It was shown that the strength of the transmission system does not influence the dynamic behaviour of the generator of the fully rated converter wind turbine. © 2011 American Institute of Physics.

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