New spectra in the HEIDI Higgs models

We study the so-called HEIDI models, which are renormalizable extensions of the standard model with a higher dimensional scalar singlet field. As an additional parameter we consider a higher-dimensional mixing mass parameter. This leads to enriched possibilities compared to a previous study. We find effective spectral densities of the Higgs propagator, consisting of one, two or no particle peaks, together with a continuum. We compare with the LEP-2 data and determine for which range of the model parameters the data can be described. Assuming two peaks to be present we find for the new mass scale \nu\approx 56\pm12 \gev, largely independent of the dimension. In the limiting case of $d\rightarrow 6$ and two peaks we find a higher dimensional coupling constant $\alpha_6=0.70 \pm 0.18$, indicative of strong interactions among the higher dimensional fields. The LHC will not be able to study this Higgs field.Comment: 17 pages, 4 figure

A General Equilibrium Analysis of the Interplay between Foreign Direct Investment and Trade Adjustments

The theoretical literature on trade and foreign direct investment (FDI) indicates that they could be either substitutes or complements. The empirical evidence on U.S.-Japan and Asia-Pacific Economic Cooperation (APEC) countries suggests that trade and FDI exhibit a complementary relationship. In this paper, we employ a multi-region, multisectoral computable general equilibrium (CGE) model that incorporates FDI to evaluate the impact of APEC trade and investment liberalization on economic welfare and the interplay between FDI and trade adjustments.APEC liberalization, foreign direct investment, CGE model

Deep Integration and Its Impacts on Nonmembers: EU Enlargement and East Asia

Ten countries-most completing their transition from socialist-based economies to market economies-became the EU members in 2004, two additional countries are slated to join the Union in 2007, and a few others are expected to become members at some future dates. Despite a relatively small economic size of the new member, acceding and candidate countries, this type of deep integration can have non-negligible effects on countries outside of the preferential zone as the reduction in barriers across partners leads to a re-orientation of trade. In this study, we evaluate the extent of trade adjustments and the economic impacts it will have on the East Asian economies using a dynamic computable general equilibrium (CGE) model. The overall macroeconomic effects on East Asia are small. There is some trade diversion, but there may be an opportunity to increase market penetration in some sectors of the expanding EU for which East Asia has a marked comparative advantage. This paper also assesses the relative importance of linking trade openness to productivity and lowering trade costs between the new member, acceding and candidate countries and the EU-15.EU enlargement, East Asia, CGE model

Regional Integration, Sectoral Adjustments and Natural Groupings in East Asia

Although East Asian countries were relatively inactive in signing free trade agreements (FTAs) until the end of 1990s, a number of FTAs involving East Asian countries have been signed since the turn of the century. Because sectoral interests can exert significant influence on policy negotiations, the sectoral results would be particularly important for political economy considerations. The objective of this study is to compare welfare gains and sectoral adjustments resulting from various FTA scenarios in East Asia using a dynamic global computable general equilibrium (CGE) model. The RCA rankings of commodities with various FTA scenarios and those with the global trade liberalization are correlated to examine how gnaturalh each grouping would be. The results suggest that the ASEAN+3 FTA, with relatively large welfare gains and small structural adjustments, could be a facilitating intermediate step towards global free trade. Some of the smaller FTAs, such as the ASEAN-China and ASEAN-Korea FTAs, would result in large structural adjustments for ASEAN countries.Regional integration; FTA; RCA; East Asia; CGE model

Colored Jones polynomials without tails

We exhibit an infinite family of knots with the property that the first coefficient of the n-colored Jones polynomial grows linearly with n. This shows that the concept of stability and tail seen in the colored Jones polynomials of alternating knots does not generalize naively.Comment: 5 pages, 1 ca

Mining Event Logs to Support Workflow Resource Allocation

Workflow technology is widely used to facilitate the business process in enterprise information systems (EIS), and it has the potential to reduce design time, enhance product quality and decrease product cost. However, significant limitations still exist: as an important task in the context of workflow, many present resource allocation operations are still performed manually, which are time-consuming. This paper presents a data mining approach to address the resource allocation problem (RAP) and improve the productivity of workflow resource management. Specifically, an Apriori-like algorithm is used to find the frequent patterns from the event log, and association rules are generated according to predefined resource allocation constraints. Subsequently, a correlation measure named lift is utilized to annotate the negatively correlated resource allocation rules for resource reservation. Finally, the rules are ranked using the confidence measures as resource allocation rules. Comparative experiments are performed using C4.5, SVM, ID3, Na\"ive Bayes and the presented approach, and the results show that the presented approach is effective in both accuracy and candidate resource recommendations.Comment: T. Liu et al., Mining event logs to support workflow resource allocation, Knowl. Based Syst. (2012), http://dx.doi.org/ 10.1016/j.knosys.2012.05.01

Two--loop heavy Higgs corrections to the Higgs fermionic width

We calculate the two--loop electroweak corrections to the fermionic decay width of the Higgs boson at leading order in $m_{H}$. The sum of one--loop and two--loop radiative corrections turns out to be at 6% level over the whole range of $m_{H}$ where the perturbation theory is supposed to be a sensible approximation. We show that the perturbative approach breaks down at $m_{H} \sim$ 1.4 TeV, and address the question of its relevance beyond this limit.Comment: 7 pages, Freiburg--THEP 94/0

Highly coherent kilohertz quasi-periodic oscillations from a neutron star X-ray binary EXO 1745-248

We report the discovery ($20\sigma$) of kilohertz quasi-periodic oscillations (kHz QPOs) at ~ 690 Hz from the transient neutron star low-mass X-ray binary EXO 1745-248. We find that this is a lower kHz QPO, and systematically study the time variation of its properties using smaller data segments with and without the shift-and-add technique. The quality (Q) factor occasionally significantly varies within short ranges of frequency and time. A high Q-factor (264.5 +- 38.5) of the QPO is found for a 200 s time segment, which might be the largest value reported in the literature. We argue that an effective way to rule out kHz QPO models is to observationally find such high Q-factors, even for a short duration, as many models cannot explain a high coherence. However, as we demonstrate, the shift-and-add technique cannot find a very high Q-factor which appears for a short period of time. This shows that the coherences of kHz QPOs can be higher than the already high values reported using this technique, implying further constraints on models. We also discuss the energy dependence of fractional rms amplitude and Q-factor of the kHz QPO.Comment: Minor changes, typos corrected, reference added; 8 pages, 5 figures, accepted for publication in The Astrophysical Journal Letter