Form Factors for Exclusive Semileptonic BB--Decays

We developed the new parton model approach for exclusive semileptonic decays of $B$-meson to $D,~D^*$ by extending the inclusive parton model, and by combining with the results of the HQET, motivated by Drell-Yan process. Without the nearest pole dominance ans\"atze, we {\bf derived} the dependences of hadronic form factors on $q^2$. We also calculated numerically the slope of the Isgur-Wise function, which is consistent with the experimental results.Comment: 20 pages, RevTex, 2 ps figure files(uuencoded in seperate file

Phenomenological Implications of the Topflavor Model

We explore phenomenologies of the topflavour model for the LEP experiment at $m_{_Z}$ scale and the atomic parity violation (APV) experiment in the $C_s$ atoms at low energies. Implications of the model on the $Z$ peak data are studied in terms of the precision variables $\epsilon_i$'s. We find that the LEP data give more stringent constraints on the model parameters than the APV data.Comment: 23 pages (including 5 .eps figs), ReVTeX, the 1st revised version, to appear in Phys. Lett.

A NEW APPROACH TO BASEBALL BAT SWING WARM-UP

The purpose of this study was to compare a new form of warm-up with the traditional warm-up routine in baseball bat swing. Three different warm-up conditions (i.e., the standard bat warm-up (CO), the overweighted arm warm-up (OA), and the overweighted bat warm-up (OB)) were tested. Twenty subjects who had competitive baseball experience in high school or college participated in this study. Results indicated that during warm-up swings the bat speed of the CO (31.95 ± 1.50 m/s) was significantly faster than that of the OA (31.35 ± 1.82 m/s) and the OB (25.55 ± 1.43 m/s). However, the OA warm-up increased bat speed (0.659 ± 2.79%) more than the CO (0.049 ± 2.54%) and OB (−0.203 ± 3.83%) warm-ups. However, these differences were not statistically significant due to large variation across subjects. This study also found a significant drop of the bat speed at the first trial (−0.499 ± 3.21% and −1.07 ± 3.21% for the OA and OB warm-ups, respectively) immediately following loaded warm-ups. It was concluded that the overweighted arm warm-up might be better than the traditional warmup routine (i.e., the overweighted bat) but a short break (e.g., 3-min) is recommended to maximize the performance

EFFECTS OF CUSTOM-MADE 3D PRINTED INSOLES FOR FLAT-FOOT PEOPLE ON GAIT PARAMETERS: A PRELIMINARY STUDY

The purpose of this study was to make low-cost and custom-made 3D printed insoles for flat-foot people and to investigate the feasibility of these insoles in walking and running. Thirty people (15 normal and 15 flat-foot people) participated in this study. 3D scanner, 3D printer, and CAD software were used to produce insoles and motion capturing system and a force plate were used to perform gait analysis. Results indicated that custom-made 3D printed insoles were not effective on joint angles and ground reaction forces, but they affected the trajectory of COP positively during stance phase. Further study with different filling rate and materials of insoles are required to generalize 3D printed insoles for flatfoot people

Approximate Flavour Symmetries and See-Saw Mechanism

We study the approximate flavour symmetries imposed on the lepton sector assuming see-saw mechanism as the neutrino mass structure. We apply the symmetry to various neutrino phenomenologies and obtain constraints on neutrino masses and mixings.Comment: 10 pages, RevTex, 2 PS figures (uuencoded in seperate file). To appear in Mod. Phys. Lett.

Effects Of Patent Pools On Innovation Investment Ex Ante Perspectives

Recently Patent Pooling has a fast growing interest as a good alternative means to decrease transaction costs between IPRs owners and promote technology commercialization and diffusion. In this paper we attempt to shed light on the effects of patent pooling on the ex-ante innovation investment or incentive using the game theoretical economic model. We generalize the model by including many vertical integrated firms, research laboratories, and specialized manufacturing firms. Main results of this paper are: 1) Patent Pools can affect on the innovation incentives of vertically integrated firms(I-firms) and of research laboratories(R-firms) differently, and the effect depends on the number of I-firms owning essential  patents and the number of specially manufacturing firms(M-firms). But in the presence of many I-firms owning essential patents, the instruction of patent pooling increases  I-firms’ ex-ante innovation incentive or investments with independence of M-firms. 2) There is strategic complementary relationship between innovation investments of I-firms and those of R-firms, so I-firms’ increased ex-ante innovation investments make R-firms’ ex-ante innovation investments increasing. 3) In the case of R-firms maximizing private profit, the best aspect is to license independently their patent technology when I-firms make up patent pools. But this aspect is not desirable for I-firms because I-firms’ gross profit is smaller than that of I-firms which license their patent technologies independently. However, we show that in the cases of many I-firms owning essential patent technologies, patent pools including only I-firms(IP) or all upstream firms(CP) can affect asymmetrically on the I-firms’ or R-firms’ innovation investments. Nonetheless, any types of patent pools make the innovation investments of I-firms and R-firms higher than those of all firms which license independently. In summary, nowadays under general aspects that production of final goods requires many complex technologies and that many I-firms and R-firms attend R&D for essential technologies, competition authorities’ deregulation for patent pooling or government policy supporting the patent pooling can promote upstream firms’ innovation incentives or investments and compulsory licensing about R-firms is not necessary for enhancing upstream firms’ innovation investments or incentives.