https://hdl.handle.net/20.500.12852/18 2026-04-05T16:10:11Z https://hdl.handle.net/20.500.12852/2472 Tuning of speed-governing system for Kalayaan Pumped Storage Power Plant Calibjo, Cirilo C. Changes in system frequency are caused by any imbalance between load and generation. To control these, a speed governor is usually provided. The change in frequency may be either stable or unstable depending on the values of the parameters of the plant and governor. This paper describes a simple analytical procedure of tuning electro-hydraulic P.I.D. governors for the units of Kalayaan Pumped Storage Power Plant. Mathematical analysis is carried out using MATLAB simulation software, while validation through time simulation is performed using Power System Simulator/ Engineering (PSS/ E). Optimum gain settings were found both during isolated and grid operations. Although actual plant testing was not possible, the result of the study is seen as an improvement from the usual trial-and-error approach which is currently being practiced. Journal article 1996-07-01T00:00:00Z https://hdl.handle.net/20.500.12852/2421 Image segmentation and analysis of concrete cracks: A building safety evaluation system Jardeleza, Donie S. One of the factors that determine a city to be highly urbanized is through its strong foundation of structural safety implementations. It demands for a well-established skills of structural specialists in maintaining the quality and reliability of these man-made structures. This study aims to understand and interpret information taken from captured images of concrete cracks. Specifically, it investigates collected images of concrete structure deformities by extracting pixel related details. In this relation, images contain useful features that convey every shades of color value intensities it displays. Known as the “Queen City of the South”, Iloilo City is popular for its Spanish colonial churches and old houses. Regular monitoring of buildings are often undertaken using traditional procedures such as visual inspection and manual recording, making it tedious in the long run. The need to develop a building safety evaluation system to aid in the systematic approach of performing the routine assessment of any structure. The methodology applied through Iterative Modeling was the segmentation of captured concrete crack images and categorized accordingly through clustering using Partitioning Around Medoids (PAM). By using a public dataset containing 20,000 observations to serve as training sets, the pixels extracted were classified by a formulated crack severity category (CSC) which were specified as cutoffs. Percentage values were calculated and those were below a certain light intensity threshold in a pixel were constituted to be part of a crack. Results have shown that k-medoids algorithm was able to minimize the distance between points labeled within a cluster as well as the distances between each of the clusters. These evidence in the results have dramatically decreased the false positives and misclassification of the images. Having known all the related features in the identification of concrete cracks can support building evaluators and regulatory organizations in maintaining and preserving the quality of building construction at the same time, it will encourage the conceptualization of new insights and recommend improvements for better decision making endeavors. Abstract only 2022-07-01T00:00:00Z https://hdl.handle.net/20.500.12852/1408 Theological library in the new normal environment: New dynamics of institutional relationship Alenzuela, Reysa; Peleña, Ma. Cynthia T. The global pandemic has changed the course of how libraries function, transforming the service delivery, collection, space, and facilities of theological libraries. While there are discussions on faculty-librarians’ relationship, the value of the library committee and the need for cohesive library relationships with academic departments and other support offices are not fully engaged. This is much less in the conversations of theological librarians. Hence, this empirical perspective from Henry Luce III Library (HLL) of the Central Philippine University hopes to provide insights on the role of faculty as members of the library committee and other stakeholders inside and outside the university. Book chapter 2021-08-02T00:00:00Z https://hdl.handle.net/20.500.12852/1332 CPU information in computer technology Bhuiyan, Mohammad M.; Calibjo, Cirilo C. The CPU Information in Computer Technology is a state-of-the-art manner of accessing any information about Central Philippine University. We know that universities as big as CPU needs a more advanced way of letting the people acquire information about the university. These information ranges from degree/course offered in the elementary, high school and the different colleges, enrollment procedures, names and the area where a faculty or staff belongs, library features, the URC facilities and other aspects of the university. The CPU information system involves a touch screen machine comparable to the Automated Teller Machine where one does a transaction on a single basis. The user touches the main page that would lead him/her to the desired information. The use of the touch screen will not involve a mouse or a keyboard and that it only needs one's finger to operate it. The use of the said system will only take about a few minutes and the user is able to know what he wants. Abstract only 2003-03-01T00:00:00Z