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Circularly polarized (CP) antennas are used in space applications for telemetry tracking and command (TT&C). In this paper, we present an antenna for a TT&C system that can employ only four antennas to achieve a wide quasi-isotropic coverage. The proposed single-feed circular polarized annular patch antenna is low profile and compact. It exhibits a wide impedance bandwidth of 19.7%, wide-angle circular polarization with an on-axis maximum gain higher than 6 dBi and an axial ratio below 4 dB in the frequency band 2.0–2.3 GHz. The developed low-cost antenna can be used for small-satellite data downlink where only two right hand circular polarized (RHCP) antennas and two left hand circular polarized (LHCP) antennas would be required since each antenna has an adequate CP gain on a wide angle. A prototype antenna has been fabricated and measured. The experimental validation shows a good agreement of the measured impedance bandwidth, axial ratio, and far-field pattern with the ones predic...

This paper focuses on the effects of nonbinding recommendations on bargaining outcomes. Recommendations are theorized to have two effects: they can create a focal point for final bargaining positions, and they can decrease outcome uncertainty should dispute persist. While the focal point effect may help lower dispute rates, the uncertainty reduction effect is predicted to do the opposite for risk-averse bargainers. Which of these effects dominates is of critical importance in the optimal design of alternative dispute resolution (ADR) procedures, which are becoming increasingly utilized to help resolve disputes in a variety of settings. We theoretically examine the effects of recommendations on the bargaining contract zone. Our theoretical framework, which allows bargainers ’ final positions to influence a binding outcome should negotiations fail, provides for a more stringent test of focal points than previously considered. We also present data from controlled laboratory bargaining ...

The maintenance portion of the software lifecycle represents a major drain on most software company's resources. The transition from programmers to maintainers is high risk, since usually the maintainers have to learn the system from scratch before they can begin modifying it appropriately. This paper introduces a method for automatically extracting important traceability information from a C# software project's source code. Using this traceability information, maintainers (and programmers) are better able to evaluate the impacts their actions will have on the entire project.

Recent cross-country empirical evidence indicates that the money-prices relationship depends on the level of inflation. This relationship is close to proportional for high inflation economies, but weakens when mean inflation is lower. Based on these findings, we focus on the Argentine experience along the last 30 years. Using descriptive analysis as well as cointegration tests we find that proportionality holds for the high inflation period but weakens under the low inflation regime. Money velocity is quite volatile but keeps a positive correlation with inflation in the long run. Under low inflation, velocity correlates negatively with money growth, a result consistent with the empirical evidence in the literature. We use VAR analysis to study the short-run dynamics of money and prices under high and low inflation. Including relevant macroeconomic variables such as the nominal interest rate, the exchange rate depreciation and GDP growth we study the transmission of nominal shocks to...

Sentiment analysis on Twitter data has attracted much attention recently. One of the system’s key features, is the immediacy in communication with other users in an easy, user-friendly and fast way. Consequently, people tend to express their feelings freely, which makes Twitter an ideal source for accumulating a vast amount of opinions towards a wide diversity of topics. This amount of information oers huge potential and can be harnessed to receive the sentiment tendency towards these topics. However, since none can invest an innite amount of time to read through these tweets, an automated decision making approach is necessary. Nevertheless, most existing solutions are limited in centralized environments only. Thus, they can only process at most a few thousand tweets. Such a sample, is not representative to dene the sentiment polarity towards a topic due to the massive number of tweets published daily. In this paper, we go one step further and develop a novel method for sentiment le...

C++ template metaprogramming has been used with great success to build software applications and libraries. In practice, however, template metaprogramming suffers usability, reliability, and capability shortcomings, and it is not well understood in theory. Template metaprogramming has these problems because it relies on emergent properties of disparate language features that were tailored to other purposes. As a step toward solid and sound language support for metaprogramming, this paper establishes firm semantic foundations for select capabilities of template metaprogramming. We analyze C++ and the idioms of template metaprogramming and isolate, in a language-neutral fashion, fundamental capabilities of C++ that enable metaprogramming. Guided by this analysis, we present a design for a core calculus that directly expresses fundamental metaprogramming capabilities, including static computation, code generation, and type reflection. We prove a typesafety property for compile-time eva...

In the present article, we describe the use of highly fluorescent carbon dots (CDs) for the preparation of an effective water-based carbon dot ink (CD-ink) for gravure printing. Carbon dots were prepared hydrothermally from citrate and triethylenetetramine, and mixed properly with certain resins that are used in gravure inks. The as-produced CD gravure ink was used successfully for printing high quality fluorescent images.

The years 2001, 2002, and 2003 experienced significant downsizing of the Information Technology (IT) industry. In 2004, outsourcing or off-shoring gave another blow to the IT job market. The future enrollment of computer science, computer information system, management information system majors might decrease. Most of us, the faculty who presented papers at the ISECON conferences, will have fewer students to

1. Introduction, 2. Brothers and sisters â€" adelphoi, 3. The believers, 4. The saints â€" hoi hagioi, 5. The assembly â€" hÄ" ekklÄ" sia, 6. Disciples â€" mathÄ" tai, 7. The way â€" hÄ" hodos, 8.'Christian'â€" Christianos, 9. Conclusions.