The effect of radio frequency interference on the 136- to 138-MHz return link and 400.5- to 401.5-MHz forward link of the Tracking and Data Relay Satellite System

The purpose is to update the RFI estimates in the 136- to 138-MHz VHF band and to make estimates for the first time for the 400.5- to 401.5-MHz UHF band. These preliminary predictions are based on primarily ITU frequency-registration data, with missing data bridged by engineering judgement

The Impact of ASEAN-China FTA Early Harvest Program: the Case of the Philippines with Focus on Short-run Effects on the Agriculture Sector

This paper aims to provide some information on the implications for the Philippine agriculture sector of the ASEAN-China Free Trade Agreement. In particular, the paper explores the possible impact of the agreement, with emphasis on the Early Harvest Program (EHP). It also provides a brief background on the state of the Philippine agriculture system, the liberalization initiatives undertaken, as well as some policy gaps and interventions done to address these. The paper also revisits a simulation exercise conducted on the possible short-run impact of an EHP to identify the vulnerable sectors.agriculture sector, China, agricultural liberalization, ASEAN-China Free Trade Agreement, Early Harvest Program (EHP)

How Productive is Public Capital? A Meta-Analysis

The paper analyzes the contribution of public capital to private output using several meta-analytical techniques. Both fixed and random effects models are estimated by Weighted Least Squares. Sample overlap across studies is explicitly controlled for by employing a ‘full’ Generalized Least Squares estimator. The weighted average output elasticity of public capital amounts to 0.08 after correcting for publication bias. A substantial part of the heterogeneity across studies is explained by study design parameters, such as econometric specification, estimation technique, empirical model, type of public capital, and level of aggregation of public capital data. The large elasticities of public capital found in the early literature seem to be caused by either unidentified (but present) cointegrating relationships or spurious relationships in national time series.public capital, infrastructure, public investment, meta-analysis, meta-regression analysis, publication bias

Communication performance over the TDRS multipath/interference channel

Previously developed models are used to predict communication system performance for two cases: and aircraft/TDRS and a weather satellite/TDRS relay. The magnitude of multipath, differential time delay, Doppler shift, time and Doppler spread, and interference expected to be encountered are reviewed and applied to the two cases of interest

Corruption and development, revisited

Graft and corruption is considered to be one of the biggest threats to development. Several studies had shown the tremendous impact of corruption in the economy. For a number of developing countries, a huge portion of government resources is lost and wasted due to corrupt activities, further plunging the country to poverty and underdevelopment. Various efforts to combat this social ill have been explored. However, the problem continues to persist. This short paper revisits the issue and aims to contribute to the growing literature of understanding corruption in developing economies and creating the necessary policy response. It answers the following questions: What are the different forms of corruption? What drives corruption? What has been done to address the issue? The Philippine case is also briefly discussed

SOCR Analyses: Implementation and Demonstration of a New Graphical Statistics Educational Toolkit

The web-based, Java-written SOCR (Statistical Online Computational Resource) tools have been utilized in many undergraduate and graduate level statistics courses for seven years now (Dinov 2006; Dinov et al. 2008b). It has been proven that these resources can successfully improve students' learning (Dinov et al. 2008b). Being first published online in 2005, SOCR Analyses is a somewhat new component and it concentrate on data modeling for both parametric and non-parametric data analyses with graphical model diagnostics. One of the main purposes of SOCR Analyses is to facilitate statistical learning for high school and undergraduate students. As we have already implemented SOCR Distributions and Experiments, SOCR Analyses and Charts fulfill the rest of a standard statistics curricula. Currently, there are four core components of SOCR Analyses. Linear models included in SOCR Analyses are simple linear regression, multiple linear regression, one-way and two-way ANOVA. Tests for sample comparisons include t-test in the parametric category. Some examples of SOCR Analyses' in the non-parametric category are Wilcoxon rank sum test, Kruskal-Wallis test, Friedman's test, Kolmogorov-Smirnoff test and Fligner-Killeen test. Hypothesis testing models include contingency table, Friedman's test and Fisher's exact test. The last component of Analyses is a utility for computing sample sizes for normal distribution. In this article, we present the design framework, computational implementation and the utilization of SOCR Analyses.

ASEAN Rules of Origin: Lessons and Recommendations for Best Practice

Rules of origin (ROO) set the criteria in determining the nationality of a product and where a product was made. The importance of ROO has increased in the past years as more countries engage in free trade agreements (FTAs) and begun treating goods differently according to where the product was made, along with trade-specific preferences or restrictions to the imported good once its origin is determined. This study is done to cull the lessons from ASEAN's experience in determining and implementing the rules of origin. It draws the important lessons and makes recommendations for best practice that would contribute to the cooperation and integration efforts in the region. The paper examines the various design and implementation practice in ROO regimes, focusing on RTAs where the ASEAN is involved. The paper presents findings from recent studies on the cost of ROO compliance and the FTA utilization rates. It concludes with recommendations on simplification of ROO and some reforms on administrative procedures, bringing in the development country dimension, and some general guidelines to follow to improve ROOs

Neutron spectroscopic factors of Ni isotopes from transfer reactions

177 neutron spectroscopic factors for nickel isotopes have been extracted by performing a systematic analysis of the angular distributions measured from (d,p) transfer reactions. A subset of the extracted spectroscopic factors are compared to predictions of large-basis shell models in the full pf model space using the GXPF1A effective interaction, and the (f5/2, p3/2, p1/2, g9/2) model space using the JJ4PNA interaction. For ground states, the predicted spectroscopic factors using the GXPF1A effective interaction in the full pf model space agree very well with the experimental values, while predictions based on several other effective interactions and model spaces are about 30% higher than the experimental values. For low-energy excited states (<3.5 MeV), the agreement between the extracted spectroscopic factors and shell model calculations is not better than a factor of two.Comment: 18 pages, 4 figures, 2 tables. accepted for publication in PR

The associations of adipokines with selected markers of the renin-angiotensinogen-aldosterone system: the multi-ethnic study of atherosclerosis.

Among obese individuals, increased sympathetic nervous system (SNS) activity results in increased renin and aldosterone production, as well as renal tubular sodium reabsorption. This study determined the associations between adipokines and selected measures of the renin-angiotensinogen-aldosterone system (RAAS). The sample consisted of 1970 men and women from the Multi-Ethnic Study of Atherosclerosis who were free of clinical cardiovascular disease at baseline and had blood assayed for adiponectin, leptin, plasma renin activity (PRA) and aldosterone. The mean age was 64.7 years and 50% were female. The mean (s.d.) PRA and aldosterone were 1.45 (0.56) ng ml(-1) and 150.1 (130.5) pg ml(-1), respectively. After multivariable adjustment, a 1-s.d. increment of leptin was associated with a 0.55 ng ml(-1) higher PRA and 8.4 pg ml(-1) higher aldosterone (P&lt;0.01 for both). Although adiponectin was not significantly associated with PRA levels, the same increment in this adipokine was associated with lower aldosterone levels (-5.5 pg ml(-1), P=0.01). Notably, the associations between aldosterone and both leptin and adiponectin were not materially changed with additional adjustment for PRA. Exclusion of those taking antihypertensive medications modestly attenuated the associations. The associations between leptin and both PRA and aldosterone were not different by gender but were significantly stronger among non-Hispanic Whites and Chinese Americans than African and Hispanic Americans (P&lt;0.01). The findings suggest that both adiponectin and leptin may be relevant to blood pressure regulation via the RAAS, in that the associations appear to be robust to antihypertension medication use and that the associations are likely different by ethnicity

Regional Economic Integration in East Asia: Progress and Pathways

The East Asian region is a major global economic player, given its economic size and potential. As such, Regional Economic Integration in East Asia could be considered as an important building bloc toward integration of the Asia-Pacific region. East Asia has made significant progress in creating institutions for closer cooperation and integration. The next step would be how to strengthen support to these mechanisms such that they would effectively deliver the regional goals, as well as help the region overcome pressing issues. This short paper will discuss the state of economic integration in East Asia. It will also discuss the challenges in economic cooperation and integration in the region, as well as some policy strategies to overcome the challenge