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Butuan, Philippines

Caraga State University is a state-controlled university in Agusan del Norte, Philippines. Its main campus is in Ampayon, Butuan City with an auxiliary campus in Cabadbaran City.On July 27, 2009, the Congress of the Philippines passed into law Republic Act No. 9854 which was signed by President Gloria Macapagal Arroyo on December 16, 2009, fusing together Northern Mindanao State Institute of Science and Technology in Butuan City and Northern Mindanao College of Arts, Science and Technology in Cabadbaran City into Caraga State University retaining the Butuan City branch at its main campus. Wikipedia.

Santillan J.,University of the Philippines at Diliman | Makinano M.,Caraga State University | Paringit E.,University of the Philippines at Diliman
Remote Sensing | Year: 2011

Landsat MSS and ETM+ images were analyzed to detect 25-year land-cover change (1976-2001) in the critical Taguibo Watershed in Mindanao Island, Southern Philippines. This watershed has experienced historical modifications of its land-cover due to the presence of logging industries in the 1950s, and continuous deforestation due to illegal logging and slash-and-burn agriculture in the present time. To estimate the impacts of land-cover change on watershed runoff, land-cover information derived from the Landsat images was utilized to parameterize a GIS-based hydrologic model. The model was then calibrated with field-measured discharge data and used to simulate the responses of the watershed in its year 2001 and year 1976 land-cover conditions. The availability of land-cover information on the most recent state of the watershed from the Landsat ETM+ image made it possible to locate areas for rehabilitation such as barren and logged-over areas. We then created a "rehabilitated" land-cover condition map of the watershed (re-forestation of logged-over areas and agro-forestation of barren areas) and used it to parameterize the model and predict the runoff responses of the watershed. Model results showed that changes in land-cover from 1976 to 2001 were directly related to the significant increase in surface runoff. Runoff predictions showed that a full rehabilitation of the watershed, especially in barren and logged-over areas, will be likely to reduce the generation of a huge volume of runoff during rainfall events. The results of this study have demonstrated the usefulness of multi-temporal Landsat images in detecting land-cover change, in identifying areas for rehabilitation, and in evaluating rehabilitation strategies for management of tropical watersheds through its use in hydrologic modeling. © 2011 by the authors. Source

Dellosa J.T.,Caraga State University
2015 IEEE 15th International Conference on Environment and Electrical Engineering, EEEIC 2015 - Conference Proceedings | Year: 2015

The Philippines is increasing its Renewable Energy deployments, especially on grid-connected residential solar photovoltaic (PV) installations. However, the implementation of Net-Metering is still at its early stage. Electric distribution utilities in the country, including the Agusan del Norte Electric Cooperative (ANECO) in Butuan City are apprehensive about the potential impact of Net-Metering on their operations, especially on the load management. It was also not clear to these distribution utilities whether there was a potential demand for solar PV installations from their subscribers and how feasible it was to invest in solar PV systems. © 2015 IEEE. Source

Balanay R.M.,University of Queensland | Balanay R.M.,Caraga State University | Halog A.,University of Queensland
International Journal of Life Cycle Assessment | Year: 2016

Purpose: This paper aims to promote life cycle thinking for the mining sector in the Philippines in enhancing the interventions intended for mining as a catalyst of sustainable development in the country. The environmental ills of mining hinder the sector’s acceptability as a catalyst, which is detrimental to its sustainability at the same time. Methods: Previous works on mining impacts and life cycle thinking and assessment in the country had been reviewed to glean insights on integrating life cycle thinking in mining. Why and how such thinking and approach should be accounted for in mining is examined from these works to figure out the strategies through which mining is helped in mitigating its environmental ills. Results and discussion: Life cycle thinking helps establish a logical approach in analysing issues associated with mining processes and products. It is of great relevance in preparing for contingencies for the adverse environmental outcomes that arise at any point of mining’s life cycle (exploration to mine closure) and the mining products’ life cycles (extraction to recycling or to accumulation). With its associated assessment procedures, life cycle thinking provides a logical system in obtaining scientific evidence for forward planning particularly on the aspect of sustainable mitigation of mining’s environmental outcomes. Conclusions: It is apt that life cycle thinking be seriously accounted for in mining to improve the current undertakings of troubleshooting and addressing the adverse environmental outcomes of mining. Important insights from it facilitate the identification of sustainable mitigation strategies and who could take the lead actions, such as in developing business linkages and new markets to capitalize on the wastes and emissions from mining operations. The insights can greatly help the mining sector build its capability to come in harmony with people and nature, and work as a catalyst of sustainable development in the country. © 2016 Springer-Verlag Berlin Heidelberg Source

Peligro V.C.,Institute of Education | Jumawan J.C.,Caraga State University
AACL Bioflux | Year: 2016

Nile tilapia (Oreochromis niloticus) is one of the major organisms found in the river and is used as the indicator of developmental noise and predict the status of the river. Thus, this study was conducted to assess the current ecological condition of Masao river, Butuan City using the fluctuating asymmetry in the body shapes of O. niloticus. A total of 100 individuals were collected by net fishing techniques. The landmark-based geometric morphometric method was used in determining the variations in the patterns of fluctuating asymmetry (FA) of O. niloticus with a total of sixteen bilateral traits. FA were analyzed using symmetry and asymmetry geometric data (SAGE) program version 1.0. Results in Procrustes ANOVA showed highly significant levels of FA (p<0.0001*) and principal component scores showed a high percentage FA (71.4051%), possibly mean that Masao river is in poor environmental status and fishes in the area experienced greater developmental perturbations and stresses. Principal component (PC) 1 has the highest percentile (44.3596%) of FA. The most common affected landmarks were found in landmarks 1, 3, 5, 9, 10 and 16. These are the rostral tip of premaxilla, anterior insertion of dorsal fin, dorsal insertion of caudal fin, anterior insertion of anal fin, dorsal base of pelvic fin, and dorsal base of pectoral fin because these parts were used mostly for fish mobility. Findings of this study validated the use of FA to be a useful tool in determining the current ecological status of Masao river. © 2016, BIOFLUX SRL. All rights reserved. Source

Japitana M.,Caraga State University | Bermoy M.,Caraga State University
ACRS 2015 - 36th Asian Conference on Remote Sensing: Fostering Resilient Growth in Asia, Proceedings | Year: 2015

The Province of Surigao del Sur, located along the northeastern coast of Mindanao facing the Pacific Ocean, is one of the provinces in the Caraga Region which have the largest coastal area and marine life biodiversity. This region is also one of the study area of Phil-LiDAR 2.B.14 Project in which one of the objectives is mapping of benthic habitats and marine aquaculture. Among the benthic habitats that are dominant in Surigao del Sur are seagrasses which are known to be highly productive ecosystem that provides shelter and serves as food source to diverse species of young and adult fish, marine invertebrates and marine mammals. Hence, this study is conducted in accordance to the objective of the project and also to assess the vastness of the seagrasses in the shallow water areas in the coast of Surigao del Sur by employing remote sensing techniques. Landsat 8 image is used in seagrass mapping by means of unsupervised ISODATA classification method. Landsat 8 images have been found to be efficient and could be an alternative in conducting benthic mapping because of its additional coastal blue band. The satellite image was radiometrically calibrated and atmospherically corrected using Fast Line-of-Sight Atmospheric Analysis of Hypercubes (FLAASH) method. Unsupervised ISODATA classification was then applied with minimum and maximum classes of 20 and 30, respectively. The seagrasses classification was clustered into two classes, namely, dense seagrass and sparse seagrass. Accuracy assessment of the classified features was performed using the validation points collected from the actual field survey. The classification has an overall accuracy of 87.5% and kappa coefficient of 0.84. It is then concluded that the classification method used is reliable and efficient in mapping spatial extents of seagrasses. Source

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