248 research outputs found
A Simultaneous Model to measure Academic and Financial Performances of Scientific Activities
I propose a new model to measure simultaneously academic and financial
performances of scientific activities quantitatively. The tool is very simple
and can be applied to any branches of science, while it is also adjustable to
varying macroeconomic indicators. I argue that implementing the model could
realize a fair and objective decisionmaking and also reward and punishment
system in order to improve the individual and institutional performances in
scientific activities.Comment: 5 pages, PDF only, talk given at the 7th ASEAN Science and Technology
Week - Subcommittee on Science & Technology Infrastructure and Resource
Development (5-12 August 2005
SciBlog : A Tool for Scientific Collaboration
I describe a newly developed online scientific web-log (SciBlog). The online
facility consists of several moduls needed in a common and conventional
research activity. I show that this enables scientists around the world to
perform an online collaboration over the net.Comment: 4 figures, invited talk at the Workshop on Knowledge Management (6-9
December 2004
Scientific and Financial Performance Measure : A Simultaneous Model to Evaluate Scientific Activities
An alternative model to measure simultaneously scientific and financial
performances of scientific activities is proposed. This mathematical model
focuses only on the final scientific outcomes in each fiscal year to gurantee
the objectivity. The model is suited for the purpose of immediate and
quantitative evaluation needed by policy makers to make decision in the
subsequent fiscal year. The model can be applied to any branches of science,
while it is also adjustable to varying macro-economic indicators. This enables
the policy makers to evaluate equally scientific activities in various fields
of science. It is argued that implementing the model could realize a fair,
transparent and objective reward and punishment system in any scientific
activities in order to improve both individual and institutional performances.
The model also enables an automatic evaluation embedded in any scientific
databases either in the local system or over the net.Comment: 10 pages, 2 figure
Semileptonic B decay as a test of CKM unitarity
I point out that B \to X_q \l^+ \l^- decays are sensitive
probes of possible violation of CKM unitarity. I compute the decay rates and
asymmetries in a minimal extension of the Standard Model containing an
additional isosinglet charge (-1/3) quark, which leads to a deviation from CKM
unitarity. It is shown that even for small mixing ratios
, the contribution of the
tree-level FCNC appearing in the model should change the rates and
asymmetries significantly. Especially the CP asymmetry, A_{CP} (B \to X_s \l^+
\l^-), can be enhanced to be few percents, while in the standard model the
size is less than . On the other hand, A_{CP} (B \to X_d \l^+
\l^-) is not altered so much. Constraints for the mixing ratios are extracted
from the experiments of for and mixing for under a natural assumption that the couplings
of the tree-level are almost unity, i.e. .Comment: 11 pages, Latex with eepic.sty and epic.sty, revised for publicatio
Branching-ratio and CP violation in semi-inclusive flavor-changing top decays
Semi-inclusive top decays, t \to q_i \v, are examined in the framework of
the standard model, with , \v : vector meson formed by
q_j \qb_j (). By using a simple model of hadronization, that
is 0 \l| \qb_j \gamma^\mu q_j \r| \v = \mv \fv \evj^\mu, the total branching
ratio is expected to be \br(\tivj) < ({\l| \vij^\ast \vtj \r|}/{\l| \vtb
\r|})^2 \times O({10}^{-3}) depends on the size of the coupling constant
\fv. On the other hand, the CP asymmetry should be induced only by the
long-distance effects of intermediate state q_k \qb_k () that
subsequent scatters into the vector meson. The analytical results including the
continuum contributions are given with keeping all masses. However, it yields
the CP asymmetry to be small, i.e. \acp (\tivj) < {\im [(\vij^\ast \vtj)^\ast
(\vik^\ast \vtk)]}/{\l| \vij^\ast \vtj \r|^2} \times O({10}^{-2}) for an
identified q_k \qb_k intermediate state, and suppressed more again by a
factor of \sim {({m_b}^2 - {m_s}^2)}/{\mv^2} for summing up all of them.
Particularly, \acp (t \to u \Upsilon) \simeq \pm 1%, induced by the
intermediate state or .Comment: 6 pages, LaTeX, no figure, revised version for publicatio
Field theory approach in the dynamics of biomatter
A new approach to model the biomatter dynamics based on the field theory is
presented. It is shown that some well known tools in field theory can be
utilized to describe the physical phenomena in life matters, in particular at
elementary biomatters like DNA and proteins. In this approach, the biomatter
dynamics are represented as results of interactions among its elementary
matters in the form of lagrangian. Starting from the lagrangian would provide
stronger underlying theoretical consideration for further extension. Moreover,
it also enables us to acquire rich physical observables using statistical
mechanics instead of relying on the space-time dynamics from certain equation
of motions which is not solvable due to its nonlinearities. Few examples from
previous results are given and explained briefly.Comment: 7 page
Effect of the Flavor Changing Neutral Current on Rare decays
We study the effect of the FCNC on rare decays in the beyond standard
model with vector like singlet quarks. It has been shown that does not receive sizable contribution compared with that of the
standard model while , ,
can be changed from the predictions of the standard model.Comment: 7 pages, Proceeding of 1994 International Workshop on B Physics in
Nagoya (World Scientific, 1995) 314, LaTeX, no figure
Introducing OPTO : Portal for Optical Communities in Indonesia
Since January 1, 2005 we have launched "OPTO" Portal, a website dedicated to
optical communities in Indonesia. The address of this portal is
http://www.opto.lipi.go.id and is self-supporting managed and not for
commercial purposes. Our aims in launching this portal are to benefit Internet
facility in increasing the communities' scientific activity; to provide an
online reference in Indonesian language for optics-based science and technology
subjects; as well as to pioneer the communities' online activities with real
impacts and benefits for our society. We will describe in the paper the
features of this portal that can be utilized by all individuals or members of
optical communities to store and share information and to build networks or
partnership as well. We realized that this portal is still not popular and most
of our aims are still not reached. This conference should be a good place for
all of us to collaborate to properly utilize this portal for the advantages to
the optical communities in Indonesia and our society at large.Comment: 3 pages, Proceeding of the 2nd International Conf. on Optics and
Laser Applications 200
Lagrangian dynamics of the Navier-Stokes equation
Most researches on fluid dynamics are mostly dedicated to obtain the
solutions of Navier-Stokes equation which governs fluid flow with particular
boundary conditions and approximations. We propose an alternative approach to
deal with fluid dynamics using the lagrangian. We attempt to develop a gauge
invariant lagrangian which reconstructs the Navier-Stokes equation through the
Euler-Lagrange equation. The lagrangian consists of gauge boson field \A_\mu
with appropriate content describing the fluid dynamics, i.e. \A_\mu = (\Phi,
-\uv). An example of applying the lagrangian to the interaction of fluid in a
solitonic medium is also given.Comment: 9 pages, 1 figure, talk at the International Conference on Applied
Mathematics 2005, Bandun
GRID Architecture through a Public Cluster
An architecture to enable some blocks consisting of several nodes in a public
cluster connected to different grid collaborations is introduced. It is
realized by inserting a web-service in addition to the standard Globus Toolkit.
The new web-service performs two main tasks : authenticate the digital
certificate contained in an incoming requests and forward it to the designated
block. The appropriate block is mapped with the username of the block's owner
contained in the digital certificate. It is argued that this algorithm opens an
opportunity for any blocks in a public cluster to join various global grids.Comment: 5 pages, Proceeding of the 2008 International Conference on Computer
and Communication Engineerin
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