Competition Policy and Regulation in Ports and Shipping

The country's archipelagic configuration requires an efficient maritime transport infrastructure composed of ports and shipping for growth and socioeconomic integration. This paper examines competition policy and the regulatory framework of the port and shipping sectors. It assesses the policies and programs of the government in promoting competition in these sectors and recommends areas for policy and regulatory reform. After a brief description of the analytical underpinnings of competition policy and regulation, the paper reviews the present state of competition and regulation in Philippine ports and interisland shipping to identify emerging issues that call for policy action. It provides specific recommendations for policy and regulatory reform.competition policy, regulatory framework, maritime transport, ports and inter-island shipping, market contestability

Competition Policy and Regulation in Ports and Shipping

The Philippines is an archipelago of approximately 7,107 islands. It has a long coastline extending to 235,973 square kilometers which is longer than that of the United States (UNESCAP 2002b). The countrys archipelagic configuration requires an efficient maritime transport infrastructure composed of ports and shipping for growth and socioeconomic integration. The integration of peripheral islands to the urban economic nodes such as Metro Manila, Cebu, Davao and General Santos and the diffusion of investments and economic activities fundamentally count on an efficient road and maritime transport network. This paper examines competition policy and the regulatory framework of the port and shipping sectors. It assesses the policies and programs of the government in promoting competition in these sectors and recommends areas for policy and regulatory reform. After a brief description of the analytical underpinnings of competition policy and regulation the paper reviews the present state of competition and regulation in Philippine ports and inter-island shipping to identify emerging issues that call for policy action. It provides specific recommendations for policy and regulatory reform

Veteran Teacher Perceptions of the Grossmont Model of Peer Assistance and Review. Is it a Viable Alternative to Traditional Evaluation?

This study looked at factors that influenced veteran teacher perceptions of the newly implemented Peer Assistance and Review (PAR) program in the Grossmont Union High School District. More specifically, the study explored (1) reasons why teachers with at least five years of successful teaching experience voluntarily chose to forfeit their regularly scheduled traditional evaluation and substitute it with a peer review, (2) factors that contributed to positive perceptions of the PAR program, (3) factors that contributed to negative perceptions of the PAR program, and (4) perceived differences between the traditional and PAR methods of teacher evaluation. This study incorporated multiple traditions of qualitative research and used guided interviews as data for the interpretive analysis. The study\u27s findings suggest that respondents\u27 views of the traditional approach to teacher evaluation played a critical role in their decision to volunteer for the PAR alternative, as did a simple desire to try something new. The evidence from the study provides tentative support for the premise that respondents view the PAR experience as the preferred method of evaluation. Respondents indicate experiencing (1) an ownership of their professional growth activity, (2) a desire to continue improvements, (3) changes in their classroom practice, (4) an ability to focus on a specific area in their teaching practice, and (5) freedom to take risks without fear of reprisal should efforts to improve result in failure. However, respondents also indicate that the Grossmont Model of PAR (1) requires more time than that normally involved with traditional evaluation, (2) is incorrectly identified as a remediation tool for ineffective teachers, and (3) requires participants to critically assess their teaching practice - a process, according to respondents, that many veteran teachers are unable to honestly perform. Additional research is needed to investigate whether or not PAR will remain the preferred method of evaluation over a longer period of time. This research would involve identifying if increased professional growth opportunities (as a result of PAR activities) favorably affects student achievement

Chemical abundance analysis of Tucana III, the second r-process enhanced ultra-faint dwarf galaxy

We present a chemical abundance analysis of four additional confirmed member stars of Tucana III, a Milky Way satellite galaxy candidate in the process of being tidally disrupted as it is accreted by the Galaxy. Two of these stars are centrally located in the core of the galaxy while the other two stars are located in the eastern and western tidal tails. The four stars have chemical abundance patterns consistent with the one previously studied star in Tucana III: they are moderately enhanced in r-process elements, i.e., they have 0.4dex. The non-neutron-capture elements generally follow trends seen in other dwarf galaxies, including a metallicity range of 0.44 dex and the expected trend in α-elements, i.e., the lower metallicity stars have higher Ca and Ti abundances. Overall, the chemical abundance patterns of these stars suggest that Tucana III was an ultra-faint dwarf galaxy, and not a globular cluster, before being tidally disturbed. As is the case for the one other galaxy dominated by r-process enhanced stars, Reticulum II, Tucana III's stellar chemical abundances are consistent with pollution from ejecta produced by a binary neutron star merger, although a different r-process element or dilution gas mass is required to explain the abundances in these two galaxies if a neutron star merger is the sole source of r-process enhancement

Photoluminescence-free photoreflectance spectra using dual frequency modulation

The following article appeared in Journal of Applied Physics 102.9 (2007): 093507 and may be found at https://aip.scitation.org/doi/10.1063/1.2802991Photoreflectance (PR) spectra are usually obtained by measuring the relative change on the reflectivity of a semiconducting sample induced by a chopped laser beam. The laser beam can also produce photoluminescence (PL) emission at the sample surface which, detected at its same frequency, could appear as an offset distorting the PR spectrum. This parasitic and intrinsically noisy PL signal, not easily discriminated electronically nor optically filtered, can become the dominant part of the PR spectrum at low sample temperatures, hiding spectrum features under its associated noise, or even avoiding data acquisition. An alternative method for PL signal discrimination is proposed in this work, using a different chopping frequency for each light beam: PL and reflected signals will appear each one at its own chopping frequency, while PR signal will be detected at its frequency sum, allowing signal separation by frequency. Both experimental setups are compared using a highly luminescent quantum well structure at low temperatures. While the standard setup suffers the PL limitation, the proposed method overcomes this constraint, allowing good quality spectra to be measured at temperatures as low as 12

Photodetector Fabrication by Dielectrophoretic Assembly of GaAs Nanowires Grown by a Two-steps Method

GaAs nanowires (NWs) are promising advanced materials for the development of high performance photodetectors in the visible and infrared range. In this work, we optimize the epitaxial growth of GaAs NWs compared to conventional procedures, by introducing a novel two-steps growth method that exhibits an improvement of the resulting NW aspectratio and an enhancement of the NW growth rate. Moreover, we investigate the contactless manipulation of NWs using non-uniform electric fields to assemble a single GaAs NW on conductive electrodes, resulting in assembly yields above 90%/site and an alignment yields of around 95%. The electrical characteristics of the dielectrophoretic contact formed between the NW and the electrode have been measured, observing that the use of n-type Al-doped ZnO (AZO) as electrode material for NW alignment produces Schottky barrier contacts with the GaAs NW body. Moreover, our results show the fast fabrication of diodes with rectifying characteristics due to the formation of a low-resistance contact between the Ga catalytic droplet at the tip of the NW and the AZO electrode. The current-voltage measurements of a single GaAs NW diode under different illumination conditions show a strong light responsivity of the forward bias characteristic mainly produced by a change on the series resistance