1,417 research outputs found
Reducing the number of templates for aligned-spin compact binary coalescence gravitational wave searches using metric-agnostic template nudging
Efficient multi-dimensional template placement is crucial in computationally
intensive matched-filtering searches for Gravitational Waves (GWs). Here, we
implement the Neighboring Cell Algorithm (NCA) to improve the detection volume
of an existing Compact Binary Coalescence (CBC) template bank. This algorithm
has already been successfully applied for a binary millisecond pulsar search in
data from the Fermi satellite. It repositions templates from over-dense regions
to under-dense regions and reduces the number of templates that would have been
required by a stochastic method to achieve the same detection volume. Our
method is readily generalizable to other CBC parameter spaces. Here we apply
this method to the aligned--single-spin neutron-star--black-hole binary
coalescence inspiral-merger-ringdown gravitational wave parameter space. We
show that the template nudging algorithm can attain the equivalent
effectualness of the stochastic method with 12% fewer templates
Pengaruh Jenis Pupuk Dan Konsentrasi Benzyladenin (BA) Terhadap Pertumbuhan Dan Pembungaan Anggrek Dendrobium Hibrida
Dendrobium as ornamental plants that are used as cut flowers, potted plants, wreaths, garden ornament has a high economic value (due to the type, beauty, shape, texture, flower size, and rarity), has a broad market opportunities, sources of germplasm as mains to cross in order to get new varieties, and to cultivate them do not require large tracts of land. to get orchid production which is reached with good cultivation, one of them is by using fertilizers and growth regulators (PGR) to obtain growth and good flowering of orchids. This study was conducted to answer the following questions: (1) Which type of foliar fertilizer that can generate the best response to the growth and flowering of orchid Dendrobium, (2) how the effect of benzyladenine (BA) on the growth and flowering of orchid Dendrobium, (3) whether there is an interaction between foliar fertilizers and provision of benzyladenine (BA) to influence the growth and flowering of orchid Dendrobium. The research conducted in the greenhouse, Faculty of Agriculture, University of Lampung from January to June 2014. The experiments were carried out with a complete randomized block design with three replications. The treatments arranged in factorial (2x5). The first factor of 2 types of fertilizers, was (NPK 20-15-15) and (NPK 10-40-15). The second factor is the various concentrations of BA are: 0, 100, 200, 300, and 400 mg/l. based on data and discussion of experimental results that have been raised, it can be concluded as follows: Gandasil fertilizer (NPK 20-15-15) and Hyponex (NPK 10-40-15), had no effect on the growth and flowering of plants Dendrobium hybrids indicated by a variable percentage of plants to germinate, the number of new shoots, the height of new shoots, the increase of leaf pseudo stem diameter, and the percentage of flowering plants. Application of benzyladenine (BA) on the concentration of 100-400 mg / l, can stimulate flowering orchid hybrid Dendrobium, which is indicated by an increase in the percentage of flowering from 60.50 to 64.83%. Application of BA on the concentration of 100-400 mg / l had no effect on the percentage of ornamental plants whis have new sprout, and the number and the height of new shoots. There is no interaction between the two types of NPK (20-15-15 and 10-40-15), with concentrations of BA in influencing all observed variables
The slicing dependence of non-spherically symmetric quasi-local horizons in Vaidya Spacetimes
It is well known that quasi-local black hole horizons depend on the choice of
a time coordinate in a spacetime. This has implications for notions such as the
surface of the black hole and also on quasi-local physical quantities such as
horizon measures of mass and angular momentum. In this paper, we compare
different horizons on non-spherically symmetric slicings of Vaidya spacetimes.
The spacetimes we investigate include both accreting and evaporating black
holes. For some simple choices of the Vaidya mass function function
corresponding to collapse of a hollow shell, we compare the area for the
numerically found axisymmetric trapping horizons with the area of the
spherically symmetric trapping horizon and event horizon. We find that as
expected, both the location and area are dependent on the choice of foliation.
However, the area variation is not large, of order for a slowly
evolving horizon with . We also calculate analytically the
difference in area between the spherically symmetric quasi-local horizon and
event horizon for a slowly accreting black hole. We find that the difference
can be many orders of magnitude larger than the Planck area for sufficiently
large black holes.Comment: 10 pages, 5 figures, corrected minor typo
Does Internet Harms Music Sales? a Constructive Perspective
The main issue brought by this study is whether internet as medium and their users as actors behind the fall of music industry\u27s revenue during these years – many people stand on this point of view - or could be the facilitator of music purchasing. This study used data panel from 16 countries ranging from 1999 to 2004 to prove whether internet and their users harm the revenue of music industry, and employs four dummy variables, including piracy rates, economic development, market size, and individualism/collectivism. The results indicated that internet through their users in the USA does not harm as much as industry claimed before, only 2.1 percent. Furthermore, the panel data results indicate that level of piracy rates released by IFPI in 2001 partially supported, and surprisingly, the internet positively significant influences on the music sales for country\u27s with piracy level in the range of 25 to 50 percent. Moreover, the internet users interact with economic development and individualism/collectivism, and it has shown that internet users have positively significant impacts on the music sales. However, market size does not support the model developed in this study. The managerial implications, limitations of the study and directions for further research are also presented. Keywords: internet, piracy, music sales, piracy rates, economic development, market size, individualism/collectivism
Effective Viscous Damping Enables Morphological Computation in Legged Locomotion
Muscle models and animal observations suggest that physical damping is
beneficial for stabilization. Still, only a few implementations of mechanical
damping exist in compliant robotic legged locomotion. It remains unclear how
physical damping can be exploited for locomotion tasks, while its advantages as
sensor-free, adaptive force- and negative work-producing actuators are
promising. In a simplified numerical leg model, we studied the energy
dissipation from viscous and Coulomb damping during vertical drops with
ground-level perturbations. A parallel spring-damper is engaged between
touch-down and mid-stance, and its damper auto-disengages during mid-stance and
takeoff. Our simulations indicate that an adjustable and viscous damper is
desired. In hardware we explored effective viscous damping and adjustability
and quantified the dissipated energy. We tested two mechanical, leg-mounted
damping mechanisms; a commercial hydraulic damper, and a custom-made pneumatic
damper. The pneumatic damper exploits a rolling diaphragm with an adjustable
orifice, minimizing Coulomb damping effects while permitting adjustable
resistance. Experimental results show that the leg-mounted, hydraulic damper
exhibits the most effective viscous damping. Adjusting the orifice setting did
not result in substantial changes of dissipated energy per drop, unlike
adjusting damping parameters in the numerical model. Consequently, we also
emphasize the importance of characterizing physical dampers during real legged
impacts to evaluate their effectiveness for compliant legged locomotion
Sistem Organisasi Kognitif Dan Afektif Dan Pengaruhnya Terhadap Kinerja Apotek Di Surabaya: Efek Moderasi Orientasi Kewirausahaan
: Apothecary is a highly regulated and competitive industry due to less differentiation and high density in certain areas. Interestingly, the performance of apothecaries is heterogeneous; and based on market orientation perspective we argue that the condition exists due to different level on responding competitors\u27 actions as well as customers\u27 needs. Further, we argue that managers\u27 entrepreneurial orientation can strengthen these relationships. The mechanism of how can apothecaries develop their responsiveness to competitors and customers also is investigated. We distributed questionnaires among apopthecary managers in Surabaya and generated 131 responses. By using PLS, the results indicate that responsiveness to competitors positively influence on their performance, while responsiveness to customers is not. The moderating effect of entrepreneurial orientation is also not confirmed. Responsiveness to competitors is highly determined by cognitive and affective organizational system, while responsiveness to customers mainly determined by affective organizational system. Managerial and academic implications are further discussed in this paper
Rancang Bangun Sistem Regulations Legislation Library Di Sekretariat Dprd Kabupaten Jombang Menggunakan Embarcadero Delphi Xe3
Parliament Secretariat is agency that provides administrative services and providers to support the smooth running of secretarial duties and legislative functions as place where had made rules and regulations that apply in that area .Information technology facilities utilization is required to increase effectiveness and efficiency the performance of secretariat really can be better so the application of technology in the scope of government and the duties more optimal.A large number of books and legal regulations legislation can be managed as benefits the library at Parliament Secretariat. the classification system is required so that the circulation of information,archive and document storage becomes more accurate and well-organized.So that the authors design a system information books and regulations legislation data in the scope of the Parliament secretariat institutions.In this study realized "Design System of 'Regulations Legislation Library'at the Jombang Parliament Secretariat Using Embarcadero Delphi XE3" with Touch technology and MYSQL as database server
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