4,084 research outputs found
Pelatihan Maintenance Korosi pada Baling Baling Kapal Klotok Balikpapan-Penajam Pasir Utara (PPU)
Community service is one of the tri dharma of higher education which is the duty of lectures college students, therefore in this servicewe rised the issue of how to maintain corrosion on klotok ship propellers for the Balikpapan-PPU routeand how to conduct optimal training activities so that theactors, owners and operators are orderly and take good care. The method of implementation is the form of training for 2 days and mentoring for 3 consecutive months. This training activity involved 2 lectures and 3 college students. This ship propeller maintenance training was attendedby 30 people consisting of 10 ship owners and 20 klotok ship operators. Implementation of on august 31st â September 1st 2018 with the hope that the owners and operators of the klotok ships can understand the importance of their klotok care so thath people who use sea transportation, especially the people of Balikpapan and Penajam Pasir Utara feel safe and confortable while in the klotok ship. This training makes it easier for ship owners to monitor operators directly and carryng our their klotok and operators also do not arbitrarily runklotok without maintenance.
Keywords :klotok ships, maintenance, ship propellers, ship operators, training.
 
The electron lifetime in Luttinger liquids
We investigate the decoherence of the electron wavepacket in purely ballistic
one-dimensional systems described through the Luttinger liquid (LL). At a
finite temperature and long times , we show that the electron Green's
function for a fixed wavevector close to one Fermi point decays as
, as opposed to the power-law behavior occurring at short
times, and the emerging electron lifetime obeys for
spinful as well as spinless electrons. For strong interactions, , reflecting that the electron is not a good Landau quasiparticle in LLs. We
justify that fractionalization is the main source of electron decoherence for
spinful as well as spinless electrons clarifying the peculiar electron mass
renormalization close to the Fermi points. For spinless electrons and weak
interactions, our intuition can be enriched through a diagrammatic approach or
Fermi Golden rule and through a Johnson-Nyquist noise picture. We stress that
the electron lifetime (and the fractional quasiparticles) can be revealed from
Aharonov-Bohm experiments or momentum resolved tunneling. We aim to compare the
results with those of spin-incoherent and chiral LLs.Comment: 20 pages, 1 column, 6 figures, 1 Table; expands cond-mat/0110307 and
cond-mat/0503652; final version to appear in PR
Measurement of the charged pion mass using X-ray spectroscopy of exotic atoms
The transitions in pionic nitrogen and muonic oxygen were measured
simultaneously by using a gaseous nitrogen-oxygen mixture at 1.4\,bar. Due to
the precise knowledge of the muon mass the muonic line provides the energy
calibration for the pionic transition. A value of
(139.57077\,\,0.00018)\,MeV/c (\,1.3ppm) is derived for the
mass of the negatively charged pion, which is 4.2ppm larger than the present
world average
River environment: a reference document, The
DBS-PFL-YHC-SAS-14.Includes bibliographical references (pages A-1-A-26).Prepared for United States of the Interior Fish and Wildlife Service.December 1975
Quantum dot admittance probed at microwave frequencies with an on-chip resonator
We present microwave frequency measurements of the dynamic admittance of a
quantum dot tunnel coupled to a two-dimensional electron gas. The measurements
are made via a high-quality 6.75 GHz on-chip resonator capacitively coupled to
the dot. The resonator frequency is found to shift both down and up close to
conductance resonance of the dot corresponding to a change of sign of the
reactance of the system from capacitive to inductive. The observations are
consistent with a scattering matrix model. The sign of the reactance depends on
the detuning of the dot from conductance resonance and on the magnitude of the
tunnel rate to the lead with respect to the resonator frequency. Inductive
response is observed on a conductance resonance, when tunnel coupling and
temperature are sufficiently small compared to the resonator frequency.Comment: 8 pages, 4 figure
New Radar Interferometric Time Series Analysis Toolbox Released
Interferometric synthetic aperture radar (InSAR) has become an important geodetic
tool for measuring deformation of Earthâs surface due to various geophysical phenomena,
including slip on earthquake faults, subsurface migration of magma, slowâmoving
landslides, movement of shallow crustal fluids (e.g., water and oil), and glacier flow.
Airborne and spaceborne synthetic aperture radar (SAR) instruments transmit microwaves
toward Earthâs surface and detect the returning reflected waves. The phase of the
returned wave depends on the distance between the satellite and the surface, but it is
also altered by atmospheric and other effects. InSAR provides measurements of surface
deformation by combining amplitude and phase information from two SAR images of
the same location taken at different times to create an interferogram. Several existing
openâsource analysis tools [Rosen et al., 2004; Rosen et al., 2011; Kampes et al., 2003 ;
Sandwell et al., 2011] enable scientists to exploit observations from radar satellites
acquired at two different epochs to produce a surface displacement map
Brokerage for Quality Assurance and Optimisation of Cloud Services: An Analysis of Key Requirements
As the number of cloud service providers grows and the requirements of cloud service consumers become more complex, the latter will come to depend more and more on the intermediation services of cloud service brokers. Continuous quality assurance and optimisation of services is becoming a mission-critical objective that many consumers will find difficult to address without help from cloud service intermediaries. The Broker@Cloud project envisages a software framework that will make it easier for cloud service intermediaries to address this need, and this paper provides an analysis of key requirements for this framework. We discuss the methodology that we followed to capture these requirements, which involved defining a conceptual service lifecycle model, carrying out a series of Design Thinking workshops, and formalising requirements based on an agile requirements information model. Then, we present the key requirements identified through this process in the form of summarised results
Density Correlation Functions in Calogero Sutherland Models
Using arguments from two dimensional Yang-Mills theory and the collective
coordinate formulation of the Calogero-Sutherland model, we conjecture the
dynamical density correlation function for coupling and , where is
an integer. We present overwhelming evidence that the conjecture is indeed
correct.Comment: 12 pages phyzzx, CERN-TH/94.7243 One reference change
Universality in quantum parametric correlations
We investigate the universality of correlation functions of chaotic and
disordered quantum systems as an external parameter is varied. A new, general
scaling procedure is introduced which makes the theory invariant under
reparametrizations. Under certain general conditions we show that this
procedure is unique. The approach is illustrated with the particular case of
the distribution of eigenvalue curvatures. We also derive a semiclassical
formula for the non-universal scaling factor, and give an explicit expression
valid for arbitrary deformations of a billiard system.Comment: LaTeX, 10 pages, 2 figures. Revised version, to appear in PR
Green Function of the Sutherland Model with SU(2) internal symmetry
We obtain the hole propagator of the Sutherland model with SU(2) internal
symmetry for coupling parameter , which is the simplest nontrivial
case. One created hole with spin down breaks into two quasiholes with spin down
and one quasihole with spin up. While these elementary excitations are
energetically free, the form factor reflects their anyonic character. The
expression for arbitrary integer is conjectured.Comment: 13pages, Revtex, one ps figur
- âŠ