20,047 research outputs found
DSIF station schedules
System manages Deep Space Instrumentation Facilities /DSIF/ equipment construction and modification planning. Versatile program applies to such tasks as employee time and task schedules, pay schedules, operations schedules, and plant and equipment procurement, construction, modification or service
Spillovers, Foreign Investment, and Export Behavior
Case studies of export behavior suggest that firms who penetrate foreign markets reduce entry costs for other potential exporters, either through learning by doing or through establishing buyer- supplier linkages. We pursue the idea that spillovers associated with one firm's export activity reduce the cost of foreign market access for other firms. We identify two potential sources of spillovers: export activity in general and the specific activities of multinational enterprises. We use a simple model of export behavior to derive a logit specification for the probability a firm exports. Using panel data on Mexican manufacturing plants, we find evidence consistent with spillovers from the export activity of multinational enterprises but not with general export activity.
Strategi Perencanaan Produk Perumahan: Pemetaan Preferensi Terhadap Desain Rumah Tinggal
Kesan visual suatu produk mempengaruhi kredibilitas dan keputusan akuisisi produk tersebut. Produk rumah tinggal dengan kualitas desain visual seperti apakah yang akan memiliki preferensi tinggi dan akan cepat diserap oleh pasar? Penelitian ini menjawab pertanyaan tersebut. Data dikumpulkan dengan metode survei dan dianalisis dengan analisis faktor dan pemetaan preferensi. Analisis faktor mengungkap empat dimensi, preferensi, keteraturan, kabaruan dan kompleksitas. Pemetaan preferensi memetakan penyebaran posisi produk terhadap empat dimensi tersebut dan menggambarkan hubungan antar dimensi. Dari peta preferensi dapat diidentifikasi rumah tinggal yang secara perseptual dianggap memiliki keteraturan, kebaruan pada tingkat tertentu dan tingkat kompleksitas sedang, cenderung memiliki preferensi tinggi. Rumah tinggal tersebut juga memiliki karakteristik penggunaan warna dan material alami, warna senada tetapi berbeda gelap/terang, ruang transisi di bagian depan, dan penempatan elemen repetitif dan fokus
A theoretical investigation of the aerodynamics of slender wing-body combinations exhibiting leading-edge separation
Theoretical investigation of aerodynamics of slender wing-body combinations exhibiting leading edge separatio
Perceived Value, Leisure Experience, Dan Willingness to Stay: Arsitektur Hotel Untuk Dewasa Muda Indonesia
. Hospitality concept can be defined in two aspects i.e. in philosophy and economy aspects. Architecture design that related with hospitality facilities such as hotel building, need to shows the philosophy of hospitality concept that related with experience management, and hospitality in economy concept that related with cost for the experience. The aim of this study is to reviewing relationship of Indonesian early-adulthoods perception and preference (willingness to stay) to hotel design with perceived value (in philosophy) and leisure experience (in economy) concepts in hospitality context. This study used sequential mixed-method to investigate respondents perception and willingness to stay, which is that result will be associated with perceived value and leisure experience concepts. The results showing the sign of a link between respondents willingness to stay with perceived value and leisure experience
The physiological basis for genetic variation in water use efficiency and carbon isotope composition in Arabidopsis thaliana.
Ecologists and physiologists have documented extensive variation in water use efficiency (WUE) in Arabidopsis thaliana, as well as association of WUE with climatic variation. Here, we demonstrate correlations of whole-plant transpiration efficiency and carbon isotope composition (δ(13)C) among life history classes of A. thaliana. We also use a whole-plant cuvette to examine patterns of co-variation in component traits of WUE and δ(13)C. We find that stomatal conductance (g s) explains more variation in WUE than does A. Overall, there was a strong genetic correlation between A and g s, consistent with selection acting on the ratio of these traits. At a more detailed level, genetic variation in A was due to underlying variation in both maximal rate of carboxylation (V cmax) and maximum electron transport rate (Jmax). We also found strong effects of leaf anatomy, where lines with lower WUE had higher leaf water content (LWC) and specific leaf area (SLA), suggesting a role for mesophyll conductance (g m) in variation of WUE. We hypothesize that this is due to an effect through g m, and test this hypothesis using the abi4 mutant. We show that mutants of ABI4 have higher SLA, LWC, and g m than wild-type, consistent with variation in leaf anatomy causing variation in g m and δ(13)C. These functional data also add further support to the central, integrative role of ABI4 in simultaneously altering ABA sensitivity, sugar signaling, and CO2 assimilation. Together our results highlight the need for a more holistic approach in functional studies, both for more accurate annotation of gene function and to understand co-limitations to plant growth and productivity
Invariant submanifold for series arrays of Josephson junctions
We study the nonlinear dynamics of series arrays of Josephson junctions in
the large-N limit, where N is the number of junctions in the array. The
junctions are assumed to be identical, overdamped, driven by a constant bias
current and globally coupled through a common load. Previous simulations of
such arrays revealed that their dynamics are remarkably simple, hinting at the
presence of some hidden symmetry or other structure. These observations were
later explained by the discovery of (N - 3) constants of motion, each choice of
which confines the resulting flow in phase space to a low-dimensional invariant
manifold. Here we show that the dimensionality can be reduced further by
restricting attention to a special family of states recently identified by Ott
and Antonsen. In geometric terms, the Ott-Antonsen ansatz corresponds to an
invariant submanifold of dimension one less than that found earlier. We derive
and analyze the flow on this submanifold for two special cases: an array with
purely resistive loading and another with resistive-inductive-capacitive
loading. Our results recover (and in some instances improve) earlier findings
based on linearization arguments.Comment: 10 pages, 6 figure
Zero Temperature Phase Transition in Spin-ladders: Phase Diagram and Dynamical studies of Cu(Hp)Cl
In a magnetic field, spin-ladders undergo two zero-temperature phase
transitions at the critical fields Hc1 and Hc2. An experimental review of
static and dynamical properties of spin-ladders close to these critical points
is presented. The scaling functions, universal to all quantum critical points
in one-dimension, are extracted from (a) the thermodynamic quantities
(magnetization) and (b) the dynamical functions (NMR relaxation). A simple
mapping of strongly coupled spin ladders in a magnetic field on the exactly
solvable XXZ model enables to make detailed fits and gives an overall
understanding of a broad class of quantum magnets in their gapless phase
(between Hc1 and Hc2). In this phase, the low temperature divergence of the NMR
relaxation demonstrates its Luttinger liquid nature as well as the novel
quantum critical regime at higher temperature. The general behaviour close
these quantum critical points can be tied to known models of quantum magnetism.Comment: few corrections made, 15 pages, to be published in European Journal
of Physics
Risk of sexual recidivism as a function of age and actuarial risk
The study of risk for sexual recidivism has undergone substantial development in recent years. The foundation for advances in this area has been the use of actuarial measures to identify subgroups of offenders with different observed rates of sexual re-offending over time. An unresolved issue within this research area has been the moderating function of age in the assessment of risk. The current study examined sexual re-offending as a function of age and actuarial risk in a large sample of sexual offenders released from prison between 1990 and 2004. There was an overall decrease in the rate of sexual re-offending over the age of 50. However, a small group of offenders from the higher actuarial risk categories of the older age groups continued to re-offend at higher rates than their lower-risk peers. <br /
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