2006: Proceedings of the 24th Samahang Pisika ng Pilipinas National Physics Congress

50 years of seeing and experimenting with single surface atoms

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Physics, pedagogy, and cognitive neuroscience at the crossroads

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Systems biophysics: An opportunity for Filipino researchers

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State of the art cancer management through physics

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Stochastic modeling of the structure and mechanical properties of the DNA

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Ex-planets and exo-planets: Why Pluto is not a planet anymore

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Diverse carbothermal ZnO crystal habit and their optical properties

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Painting characterization using photometric stereo and spectral unmixing

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Common path interferometric techniques for removing the undiffracted beam in phase-only holographic generation of multifoci patterns

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Relativistic dynamics in regions of extremely small accelerations

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Criticality of a nonconservative self-organized branching process in a stochastically dynamic population

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PC and microcontroller-based remote-controlled exploring wheeled robot

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Some properties of disordered clusters in two-dimensional gradient percolation

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Numerical quantum evolution of confined particle with non-periodic boundary conditions through split operator method reconstructed by Gegenbauer series

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Mass extinction efficiency of aerosols measured during the 2006 New Year celebration in Manila

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Empirical modeling of average daily solar radiation using surface meteorological observations of University of the Philippines Los Baños

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Aerosol-cloud color ratio derived from 1064 nm – 532 nm LIDAR measurements

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Wind energy potential for the Philippines: A preliminary study

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Preferential attachment model of multilevel marketing

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Prisoner's Dilemma game as a model for cooperation dynamics on scale-free networks with small-world properties

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Wavepacket simulations in a message-passing cluster environment using a multi-agent-based loop scheduling

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Jamming of mixed and homogenous hard spheres in a two-dimensional hopper

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Modeling the effects of diversity on the spread of an infection

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Experimental study on the angle of repose of rice in the presence of an interstitial matrix

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Prose and poetry disambiguation using syntactic networks

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Spectral unmixing of idealized aquatic benthos with consideration of water­-column effect

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Rapid reef assessment through subsurface underwater video

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Unmixing error of composite spectra as a function of concentration, signal-to-noise ratio, and peak separation

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Bathymetry using an underwater color locus

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Imaging of Si photodiode under different biasing conditions via optical feedback microscopy

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Fluorescence properties of a rhodamine­-doped elastomer waveguide

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Four-fold azimuthal angle dependence of the terahertz radiation power in (100) p-InAs under 1-T transverse magnetic field

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A simple optical experiment for the measurement of the speed of convection flow

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Determination of moisture content of seaweeds (Euchema cottonii) using microwaves

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3­-dimensional direct observation of single-­walled carbon nanotubes distribution in living cells

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Numerical model for analyzing the dynamics of a dielectric particle in an optical landscape

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Image transfer from the laser excitation pulse to the Stokes in a hydrogen Raman shifter

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Holographic generation of wavelet beam shapes with dynamic scaling parameter

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Phase retrieval using measurements of a volume speckle field with synthetic apertures

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Microcontroller­-based irrigation controller

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Optimization studies of a 2.45 GHz microwave argon plasma with varying distances between two repelling hexapoles

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Microcontroller-based data transmission through SMS technology of cellular phones using AT commands

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High resolution tracking of mobile agents by electromagnetic time­-reversal techniques

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Modified filter design to optimize the synthetic reference wave in the generalized phase contrast method

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Tracking the onset of defect in light emitting semiconductor devices via two-photon excitation microscopy and spectral microthermography

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Psuedo-nondiffracting and self-reconstructing properties of helico-conical optical beams

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Electron energy distribution function (EEDF) analysis of negative hydrogen ion (H⁻) enhancement in a magnetized sheet plasma source

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Boosting the coupling efficiency in single-mode micro-structured fibers using Laguerre-Gaussian beams

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Investigation of the optical properties of Nd³⁺-doped LaF₃ and YLiF₄ in the deep ultraviolet (DUV) and vacuum ultraviolet (VUV) region

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Structural and electrical characterization of the chromatic transitions when doping spin-coated polyaniline films

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Study on the effects of Zr content on the PbO-ZrO₂-TiO₂ system at 1100°C

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Transmission spectra of microstructured polymer fiber using terahertz-time domain spectroscopy (THz-TDS)

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Standard crystallographic and superspace descriptions of the crystal structure of Ca₅Nb₄TiO₁₇

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Optical spectra of InAs quantum dots in InGaAs/GaAs quantum wells

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Thickness measurement of nano-size carrageenan thin films by x-ray reflectivity and total-reflection x-ray fluorescence spectroscopy

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Effect of using variable extractor voltage in N⁺ plasma-enhanced chemical vapor deposition on substrate land pads

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Effect of methyl substituents on the electrical conductivity and computed molecular properties of chlorine-doped polyaniline

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Effect of sintering temperature on the electrical property and microstructure of Zn_0.9Bi_0.02Mn_0.02Cr_0.02Al_0.04O varistor

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Conductive atomic force microscopy of plasma sputter-type ion source deposited gallium nitride thin films

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Mechanism of hydrothermal growth of ZnO nanoflowers and nanoblades

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Effects of PbO on the electrical properties of ZnO-Bi₂O₃-Sb₂O₃ varistor ceramics

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Surface morphology and optical characterization of argon plasma treatment of polyaniline emeraldine base at various powers

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A novel liquid phase epitaxial technique for growth of Bi₂Sr₂CaCu₂O_8+δ thin films

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Effect on electrical conductivity of crosslinking via curing process

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Geometry optimization of meso-polyhalogenated (F, Cl, and Br) iron (II) porphyrin using density functional theory

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Characterizing the effect of seating arrangement in a classroom learning using neural networks

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Incorporating an OSH course in the undergraduate physics curriculum

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Developing a standardized science process skills test in mechanics and thermodynamics

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Observing students' strategy in solving kinematics problems

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Cognitive expectations of Liberal Arts students and Business Majors in a general education Introductory Physics class

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Students' preferred choice of method in answering problems regarding tension

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Evaluation of Physics Fair projects at UP Los Baños

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Students' misconception on forces and work

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Tear propagation model of woven fabrics

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Relaxation and steady-state behavior of an analytically tractable one-dimensional model

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Heat capacity of logistic maps with bidirectional coupling

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Molecular dynamics of two particles on a ring

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Modeling the survival of minority languages

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A finite temperature magnetic phase transition in a one dimensional lattice

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Sustainable and catastrophic harvest methods in a logistic equation-based growth model of natural resources

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Time reversal symmetry breaking confined time of arrival operators

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Analytical underpinnings of a hybrid analytic-numeric scheme for the Abe-Thurner generalization of the diffusion equation

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Green's function for a superconductor-normal metal bilayer

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Thermodynamic properties of a two dimensional electron gas in the fractional quantum Hall regime

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Long time dynamical behavior of the confined quantum time of arrival eigenfunctions

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Prompt J/ψ plus jet associated production in ep deep-inelastic scattering

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Automated Guided Vehicle control using wireless network interface

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PC-based camera system for controlling a microcontroller-­based Automated Guided Vehicle

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Microcontroller-based data logging instrument for measuring hydrogen sulfide gas concentration at Mudspring, Los Baños, Laguna

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Mobile ECG: A real time telemonitoring system via GSM and GPRS

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Parallel implementation of the Gerchberg-Saxton algorithm and holographic field projection using a phase-only spatial light modulator

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Generation of variable optical field patterns using amplitude spatial Fourier filtering

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Temporal behavior of nitrogen Raman lines with increasing input energy

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Laser induced breakdown spectroscopy of copper in air

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Chlorophyll­-doped silicone as a new fluorescent material

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Modal analysis of Teflon photonic crystal fiber waveguide in terahertz frequency region

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Automated thresholding in electric guitar note recognition using Fourier analysis and neural network

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Optimization of single beam optical trap using nonlinear refractive index parameter of microspheres

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Investigation of the gas discharge ion source three-electrode system for optimum H⁺ extraction

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Investigations on the effects of Ti target position and bias potential to the synthesis of TiN in a magnetized sheet plasma source

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Electron temperature measurement of an argon microwave discharge using spectroscopic analysis of 4p transition levels

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Automated analysis of Langmuir probe traces using nonlinear regression

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Synthesis of PAni-EB ultrafine fibers by electrospinning

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Study on the effect of Philippine bentonite as filler on the permeability of geosynthetic clay liners

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Effects of lead oxide on zinc oxide ceramics

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Fractal dimension of the current-voltage graph of ZnO and Zn_(1−x−y)Bi_xTi_yO fired at different temperature

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Investigation on the grain features of PbO-doped ZnO and ZnO varistors

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Spectroscopic analysis of 1,4-dihydroxynaphthalene in the 0.5- to 6-THz region using GaP THz wave generator

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Triboelectrification of hydrocarbon solvents during wafer machining

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Particle deposition using Monte Carlo simulation

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Synthesis of MgO on stainless steel substrates in a magnetized sheet plasma source

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Strain-induced splitting of the valence band in epitaxially lifted-off GaAs films

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Fabrication and characterization of InAlAs/InGaAs PIN structures lattice-matched to (100) InP grown via molecular beam epitaxy

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Rotation and reptation of swirling spheres as slope relaxation and avalanche

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A Compound Gauss-Markov Random Field (CGMRF) modeling of Philippine unemployment data

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Thermal interaction of a black hole with a finite temperature environment

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Complexity in competitive populations

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Relating the mean first passage times for continuous and discrete time random walks on complex networks

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Particle density dependence of molecular dynamics estimated reaction rates

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Solution of the Navier-Stokes Equation (NSE) for the incompressible laminar flow along a cylindrical pipe using finite difference method

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Born series solution of the time kernel equation and quantum mechanical derivation of the anharmonic oscillator classical time of arrival

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Superalgebraic computation of the Quantum Confined Time of Arrival operator eigenvalues

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Modified time kernel equation for simple potentials

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Comparison of modified Redlich-Kwong equations of state in evaluating compression factors of real gases

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Emerging structure in the network of Bill co-authorships in the Philippine House of Representatives

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Multilane traffic organization and path optimization in ants

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Beliefs about physics and learning physics: A profile of (non-major in physics) high school physics teachers

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Student lab: Ohm's law using microcomputer based lab

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Computer-based interactive module on electromagnetism

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A student's experiment on data acquisition for sound waves

3D simulation and analysis of the magnetic field from a double-hexapole

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Tilt angle determination in images of semi-regular patterned object using local spectral distortion

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Robust underwater object tracking using color and motion cues

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Robust smile detection algorithm using curvature and area as cues

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Simulation of local weather over Metro Manila

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Automated altazimuth mount for a 6-inch Newtonian telescope

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PC-based tracking system for a 6-­inch automated altazimuth telescope mount

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A study on the contralateral breast dosimetry of tangential beam radiotherapy using 6 MV linear accelerator beams

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Measurement of the absorption coefficients of materials and the effect of air spaces between sample and reflector using the two-microphone method

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Determination of soil concentration in water from digital images

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Fabrication, characterization and modeling of tunable elastomer lenses

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Reflectance spectrum of saba (Musa acuminata x balbasiana Colla cv. Saba) and Latondan (Musa acuminata x balbasiana Colla cv. Silk)

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Response of black garden ants, Lasius niger to different sound frequencies (0, 500, 1k, 10k, 50k, 100k, 250k and 500k Hz)

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Determination of the transmission spectra of a celery (Apium graveolens dulce) leaf infected with Septoria (Septoria apiicola) late blight

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Determination of optical spectral signatures of tobacco mosaic virus and frog-eye leaf spot on tobacco leaves

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Acquisition of the free precession signal and analysis of the proton spin lattice relaxation time of different aqueous solutions using the GLX Explorer

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Numerical and experimental simulation of an electrocardiogram using a Michelson interferometer

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Surface morphology and composition of YBa₂Cu₃O_7−δ (Y-123) films on (001) LaAlO₃ grown by liquid phase sintering technique

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AC magnetic susceptibility of granular La_2­−xSr_xCuO_4−­δ

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MgB₂ synthesis on alumina/porous ceramic substrates using different binders

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Fabrication of carbon nanotubes by ambient thermal chemical vapor deposition method

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MgB₂ films on sapphire and alumina by spin-coating and postannealing techniques

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Formation of Mn-doped zinc oxides thru solid state reaction at room temperature

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Fabrication of perchloric-doped polyaniline film using polyvinyl acetate (PVA) as binder

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Characterization of polyaniline­-polyvinyl acetate film fabricated via handsheet roller

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Electrophysical characterization of polyaniline−poly-ortho-anisidine copolymer using HyperChemistry

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Semi-empirical computations on the molecular properties of polythiophene (PT), polyisothianaphthene (PITN), and polythiophene-polyisothianaphthene (PT-PITN) co-polymer

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Effect of inorganic acid dopants on selected molecular properties affecting electrical conductivity of poly (2,5-xylidine)

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Information propagation within complex networks

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Scaling of wealth distribution in a winner-take-all economic game

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Information relay via SMS in small groups

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Modification of the Berthelot equation of state

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Robustness of meaning and readability in written syntactic networks

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Scientific collaboration in the SPP Physics Congress in 2001−2005

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Jamming of hard spheres in a 2D hopper

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Evolution of the reduced probability distribution function of a random walker on a lattice with zigzag boundaries

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On the feasibility of analytical approximations for the bound state energy spectra of one-dimensional quantum systems

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Eigenenergies of the generalized Hulthen potential by the asymptotic iteration method

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Considering weak-field limit of power-class (R^1−ε) gravity in terms of its equivalent STG-(Brans-Dicke type) theory in the vacuum-Jordan-conformal frame

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Conservation of mechanical energy and the Philippine Peso

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Secondary students' misconceptions and errors in drawing/plotting kinematics graphs

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An investigation on the existence of mental disjunction among students

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Self-efficacy in physics subject, physics examination and physics experiments of tertiary General Physics students

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Analog-to-digital converters and digital-to-analog converters workshop

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Principles of physics in cooking

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How the history of physics can help us teach

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Locally produced General Physics laboratory apparatus

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Digital electronics exercises using fabricated digital training boards

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Learning the physics of skating

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Hands-on experiments and inquiry for teaching electricity and magnetism in Secondary Science IV

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Discovering the physics in bubbles

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Home-made physics learning tools

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Studying fluid mechanics the fun way through challenging tasks/games

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