44,956 research outputs found
Women and Economics: New Historical Perspectives
No full textAbstractThis essay is the introduction to the 2022 supplemental issue of History of Political Economy, titled Women and Economics: New Historical Perspectives. We first reflect on the historiography of economics and the relative absence of women and gender in the mainstream of the field. Three approaches to the history of women and economics are delineated: making visible women economists, outlining the impact of including women in a broader narrative about economics, and analyzing gender metaphors in economic thought. We then preview and describe the nine contributions included in the volume. In the last section, we consider what is next for this research agenda, arguing that there are two important challenges to historians of economics. The first challenge concerns the consequences of delegating women and gender to a separate history. The second challenge concerns the “silences” of unwritten, undeveloped, and unpreserved work in the history of economics and how the community engaged with the past of economics should reflect on these.</jats:p
Implementation Of Various Types Of Fuzzy Controls On A Mobile Robot Using Sonar Sensors [QA9.64. N438 2008 f rb].
No full textDalam penyelidikan ini, sebuah robot bergerak telah digunakan untuk mengimplementasikan kawalan fuzzy jenis ‘Non-Singleton Type-2’ untuk kawalan pergerakan pengemudian dan tepian dinding dengan bantuan penderia sonar.
In this work, non-singleton type-2 fuzzy control has been implemented on a mobile robot for steering and sidewall movement control with the aid of ultrasonic sensors to compare its performances with the singleton type-2 and type-1 fuzzy control
Acyclicity and singleton cores in matching markets
No full textThis paper analyzes the role of acyclicity in singleton cores. We show that the absence of simultaneous cycles is a sufficient condition for the existence of singleton cores. Furthermore, acyclicity in the preferences of either side of the market is a minimal condition that guarantees the existence of singleton cores. If firms or workers preferences are acyclical, unique stable matching is obtained through a procedure that resembles a serial dictatorship. Thus, acyclicity generalizes the notion of common preferences. It follows that if the firms or workers preferences are acyclical, unique stable matching is strongly efficient for the other side of the marketStable matching, Acyclicity, Singleton cores
Predictors of cerclage failure in patients with singleton pregnancy undergoing prophylactic cervical cerclage.
No full textPURPOSE
The role of cervical cerclage to prevent preterm birth (PTB) remains controversial. The aim of this study was to identify prognostic factors for cerclage failure among singleton pregnant women following prophylactic cerclage (PC).
METHODS
A retrospective analysis of PC was performed in a single center. The main outcome measure was cerclage failure, defined by spontaneous early PTB prior to 32 weeks' gestation. Age, BMI, history of instrumentation of the uterus, history of second trimester miscarriage, previous conization, positive vaginal swab prior cerclage, gestational age at time of cerclage, CRP 1 week after cerclage and post-cerclage US changes of cervical length were tested as predictive factors. Descriptive statistical and binary logistic regression analyses were performed.
RESULTS
141 women underwent cerclage procedures between 2007 and 2016. 39 patients had PC with McDonald suture, singleton pregnancy and complete clinical follow-up information, thus fulfilling the inclusion criteria. Multivariate analysis showed that history of instrumentation of the uterus was the only independent prognostic factor [OR = 0.14 (0.03, 0.72) p = 0.019] for cerclage failure.
CONCLUSION
This is the first study showing that a history of previous uterine instrumentation is an independent predictor of cerclage failure. This finding has significant clinical implications for women of childbearing age, particularly when management of miscarriage/abortion is being considered. Women should be informed about the potential risks when counseled prior to surgical evacuation and medical management or cervical ripening should be considered. These results are also helpful in counseling patients undergoing cerclage, when a prior uterine instrumentation has been performed
The Π¹₂-singleton conjecture
No full textThe real
0
#
=
Thy
⟨
L
,
ε
,
ℵ
1
,
ℵ
2
,
…
⟩
{0^\# } = {\operatorname {Thy}}\left \langle {L,\varepsilon ,{\aleph _1},{\aleph _2}, \ldots } \right \rangle
is a natural example of a nonconstructible definable real. Moreover
0
#
{0^\# }
has a definition that is absolute: for some formula
ϕ
(
x
)
,
0
#
\phi (x),{0^\# }
is the unique real
R
R
such that
L
[
R
]
⊨
ϕ
(
R
)
L[R] \vDash \phi (R)
. Solovay conjectured that there is a real
R
R
such that
0
>
L
R
>
L
0
#
0{ > _L}R{ > _L}{0^\# }
and
R
R
also has such an absolute definition. We prove his conjecture by constructing a
Π
2
1
\Pi _2^1
-singleton
R
R
,
0
>
L
R
>
L
0
#
0{ > _L}R{ > _L}{0^\# }
. A variant of our construction produces a countable nonempty
Π
2
1
\Pi _2^1
set of reals not containing a
Π
2
1
\Pi _2^1
-singleton. The latter result answers a question of Kechris.</p
Measurement of the branching fractions for B--> D(*)+pi(-)l(-)(nu)over-bar(l) and (B)over-bar(0)-> D-(*)0 pi(+)l(-)(nu)over-bar(l)
No full textWe report on a measurement of the branching fractions for B- --> D(*)+ pi(-)l(-)(nu) over bar (l) and (B) over bar (0) --> D-(*)0 pi(+)l(-)(nu) over bar (l) with 275 x 10(6) B (B) over bar events collected at the Y(4S) resonance with the Belle detector at KEKB. Events are tagged by fully reconstructing one of the B mesons in hadronic modes. We obtain B(B- --> D(+)pi(-)l(-)(nu) over bar (l)) = (0.54 +/- 0.07 (stat) +/- 0.07(syst) +/- 0.06(BR)) x 10(-2), B(B- --> D*+pi(-) l(-) (nu) over bar (l)) (0.67 +/- 0.11 (stat) +/- 0.09(syst) +/- 0.03(BR)) x 10(-2), B((B) over bar (0) --> D(0)pi(+)l(-) (nu) over bar (l)) = (0.33 +/- 0.06(stat) +/- 0.06(syst) +/- 0.03(BR)) x 10(-2), B((B) over bar (0) -->D(*0)pi(+)l(-)(nu) over bar (l)) = (0.65 +/- 0.12(stat) +/- 0.08(syst) +/- 0.05(BR)) x 10(-2), where the third error comes from the error on (B) over bar --> D((*))l(-)(nu) over bar (l) decays. Contributions from B-0 --> D(*+)l(-)(nu) over bar (l) decays are excluded in the measurement of (B) over bar (0) --> D(0)pi(+)l-(nu) over bar (l).Astronomy & AstrophysicsPhysics, Particles & FieldsSCI(E)0ARTICLE5null7
DDT resistance and transformation by different microbial strains isolated from DDT-contaminated soils and compost materials
No full textBioremediation is a potential option to treat 1, 1, 1-trichloro-2, 2-bis (4-chlorophenyl) ethane (DDT) contaminated sites. In areas where suitable microbes are not present, the use of DDT resistant microbial inoculants may be necessary. It is vital that such inoculants do not produce recalcitrant breakdown products e.g. 1, 1-dichloro-2, 2-bis (4-chlorophenyl) ethylene (DDE). Therefore, this work aimed to screen DDT-contaminated soil and compost materials for the presence of DDT-resistant microbes for use as potential inoculants. Four compost amended soils, contaminated with different concentrations of DDT, were used to isolate DDT-resistant microbes in media containing 150 mg l−1 DDT at three temperatures (25, 37 and 55°C). In all soils, bacteria were more sensitive to DDT than actinomycetes and fungi. Bacteria isolated at 55°C from any source were the most DDT sensitive. However DDT-resistant bacterial strains showed more promise in degrading DDT than isolated fungal strains, as 1, 1-dichloro 2, 2-bis (4-chlorophenyl) ethane (DDD) was a major bacterial transformation product, while fungi tended to produce more DDE. Further studies on selected bacterial isolates found that the most promising bacterial strain (Bacillus sp. BHD-4) could remove 51% of DDT from liquid culture after 7 days growth. Of the amount transformed, 6% was found as DDD and 3% as DDE suggesting that further transformation of DDT and its metabolites occurred.D. Kantachote, I. Singleton, N. McClure, R. Naidu, M. Megharaj & B. D. Harc
Habitat Manipulation and Rodent Damage Control: Reducing Rodent Damage in Australian Macadamia Orchards
No full textPerinatal outcome in singleton and twin pregnancies complicated by Hellp sindrome in the third trimestre of gestation.
No full textPerinatal outcome in singleton and twin pregnancies complicated by Hellp sindrome in the third trimestre of gestation
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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