bluuebunny/crossref_metadata_2025_split huggingface dataset:
How to learn new tasks: Shop floor performance effects of knowledge transfer and performance feedback
Authors: Letmathe Peter , Schweitzer Marcus , Zielinski Marc 
Published: November 2011

AbstractWe investigate how learning and the task performance of individuals are affected by different forms of knowledge transfer. Whereas previous research has proven the positive performance impacts of knowledge transfer, self‐observation and feedback mechanisms individually, we explore the cumulative effect of these factors on learning and performance. With the help of two laboratory experimental studies reproducing manufacturing tasks that are typical for industrial production, we show that explicit knowledge transfer is superior to other forms of knowledge transfer. Externally provided performance feedback in the form of cost information and non‐financial performance indicators has no effect on the order of different forms of knowledge transfer. Moreover, external feedback does not even have an additional significant performance effect on learning new tasks irrespective of the type of knowledge transfer.
Small-scale dynamo action in rotating compressible convection
Authors: Favier B. , Bushby P. J. 
Published: November 2011

AbstractWe study dynamo action in a convective layer of electrically conducting, compressible fluid, rotating about the vertical axis. At the upper and lower bounding surfaces, perfectly conducting boundary conditions are adopted for the magnetic field. Two different levels of thermal stratification are considered. If the magnetic diffusivity is sufficiently small, the convection acts as a small-scale dynamo. Using a definition for the magnetic Reynolds number ${R}_{M} $ that is based upon the horizontal integral scale and the horizontally averaged velocity at the mid-layer of the domain, we find that rotation tends to reduce the critical value of ${R}_{M} $ above which dynamo action is observed. Increasing the level of thermal stratification within the layer does not significantly alter the critical value of ${R}_{M} $ in the rotating calculations, but it does lead to a reduction in this critical value in the non-rotating cases. At the highest computationally accessible values of the magnetic Reynolds number, the saturation levels of the dynamo are similar in all cases, with the mean magnetic energy density somewhere between 4 and 9 % of the mean kinetic energy density. To gain further insights into the differences between rotating and non-rotating convection, we quantify the stretching properties of each flow by measuring Lyapunov exponents. Away from the boundaries, the rate of stretching due to the flow is much less dependent upon depth in the rotating cases than it is in the corresponding non-rotating calculations. It is also shown that the effects of rotation significantly reduce the magnetic energy dissipation in the lower part of the layer. We also investigate certain aspects of the saturation mechanism of the dynamo.
Home foreclosure and risk of psychiatric morbidity during the recent financial crisis
Authors: McLaughlin K. A. , Nandi A. , Keyes K. M. , Uddin M. , Aiello A. E. , Galea S. , Koenen K. C. 
Published: November 2011

BackgroundA defining feature of the US economic downturn of 2008–2010 was the alarming rate of home foreclosure. Although a substantial number of US households have experienced foreclosure since 2008, the effects of foreclosure on mental health are unknown. We examined the effects of foreclosure on psychiatric symptomatology in a prospective, population-based community survey.MethodData were drawn from the Detroit Neighborhoods and Health Study (DNHS), waves 1 and 2 (2008–2010). A probability sample of predominantly African-American adults in Detroit, Michigan participated (n=1547). We examined the association between home foreclosure between waves 1 and 2 and increases in symptoms of DSM-IV major depression and generalized anxiety disorder (GAD).ResultsThe most common reasons for foreclosure were an increase in monthly payments, an increase in non-medical expenses and a reduction in family income. Exposure to foreclosure between waves 1 and 2 predicted symptoms of major depression and GAD at wave 2, controlling for symptoms at wave 1. Even after adjusting for wave 1 symptoms, sociodemographics, lifetime history of psychiatric disorder at wave 1 and exposure to other financial stressors between waves 1 and 2, foreclosure was associated with an increased rate of symptoms of major depression [incidence density ratio (IDR) 2.4, 95% confidence interval (CI) 1.6–3.6] and GAD (IDR 1.9, 95% CI 1.4–2.6).ConclusionsWe provide the first prospective evidence linking foreclosure to the onset of mental health problems. These results, combined with the high rate of home foreclosure since 2008, suggest that the foreclosure crisis may have adverse effects on the mental health of the US population.
Co-morbid anxiety disorders in bipolar disorder and major depression: familial aggregation and clinical characteristics of co-morbid panic disorder, social phobia, specific phobia and obsessive-compulsive disorder
Authors: Goes F. S. , McCusker M. G. , Bienvenu O. J. , MacKinnon D. F. , Mondimore F. M. , Schweizer B. ,   National Institute of Mental Health Genetics Initiative Bipolar Disorder Consortium, DePaulo J. R. , Potash J. B. 
Published: November 2011

BackgroundCo-morbidity of mood and anxiety disorders is common and often associated with greater illness severity. This study investigates clinical correlates and familiality of four anxiety disorders in a large sample of bipolar disorder (BP) and major depressive disorder (MDD) pedigrees.MethodThe sample comprised 566 BP families with 1416 affected subjects and 675 MDD families with 1726 affected subjects. Clinical characteristics and familiality of panic disorder, social phobia, specific phobia and obsessive-compulsive disorder (OCD) were examined in BP and MDD pedigrees with multivariate modeling using generalized estimating equations.ResultsCo-morbidity between mood and anxiety disorders was associated with several markers of clinical severity, including earlier age of onset, greater number of depressive episodes and higher prevalence of attempted suicide, when compared with mood disorder without co-morbid anxiety. Familial aggregation was found with co-morbid panic and OCD in both BP and MDD pedigrees. Specific phobia showed familial aggregation in both MDD and BP families, although the findings in BP were just short of statistical significance after adjusting for other anxiety co-morbidities. We found no evidence for familiality of social phobia.ConclusionsOur findings suggest that co-morbidity of MDD and BP with specific anxiety disorders (OCD, panic disorder and specific phobia) is at least partly due to familial factors, which may be of relevance to both phenotypic and genetic studies of co-morbidity.
AN EXTENDED FRAMEWORK FOR PREFERENCE RELATIONS – CORRECTED VERSION
Authors: Gustafsson Johan E. 
Published: November 2011

It is regretted that the originally published paper (doi:10.1017/S0266267111000010, published online 22 June 2011) was not the author's final amended version. We apologise for this oversight and reproduce the entire corrected paper here in print and online, with revised notation.In order to account for non-traditional preference relations the present paper develops a new, richer framework for preference relations. This new framework provides characterizations of non-traditional preference relations, such as incommensurateness and instability, that may hold when neither preference nor indifference do. The new framework models relations with swaps, which are conceived of as transfers from one alternative state to another. The traditional framework analyses dyadic preference relations in terms of a hypothetical choice between the two compared alternatives. The swap framework extends this approach by analysing dyadic preference relations in terms of two hypothetical choices: the choice between keeping the first of the compared alternatives or swapping it for the second; and the choice between keeping the second alternative or swapping it for the first.
Automated unsupervised authorship analysis using evidence accumulation clustering
Authors: LAYTON ROBERT , WATTERS PAUL , DAZELEY RICHARD 
Published: November 2011

AbstractAuthorship Analysis aims to extract information about the authorship of documents from features within those documents. Typically, this is performed as a classification task with the aim of identifying the author of a document, given a set of documents of known authorship. Alternatively, unsupervised methods have been developed primarily as visualisation tools to assist the manual discovery of clusters of authorship within a corpus by analysts. However, there is a need in many fields for more sophisticated unsupervised methods to automate the discovery, profiling and organisation of related information through clustering of documents by authorship. An automated and unsupervised methodology for clustering documents by authorship is proposed in this paper. The methodology is named NUANCE, forn-gram Unsupervised Automated Natural Cluster Ensemble. Testing indicates that the derived clusters have a strong correlation to the true authorship of unseen documents.
Identification of a highly polymorphic tetranucleotide repeat locus (DXpS) at Xp and development of a DXpS/HUMARA biplex methylation-based PCR assay that enhances detection of X-chromosome inactivation
Authors: Machado Filipe , Ramos Ester , Radic Pamela , de Brasi Carlos , Medina-Acosta Enrique 
Published: November 2011

AbstractThe methylation-based PCR assay at the polymorphic (CAG)n repeat in exon 1 of the human androgen receptor _AR_ gene (HUMARA) is a standard method for determination of the methylation state of alleles in active X (Xa) and inactive X (Xi) chromosomes. HUMARA assay is endowed with heterozygosity rates ~85% worldwide. This means that in a proportion of females it is uninformative. The HUMARA genotype is not neutral, being linked to Kennedy´s disease. Moreover, allele designation and quantification from trinucleotide repeats demand normalizing for minor (stutter) products differing from the original template by multiples of the repeat unit. Here, we report on the identification of a highly polymorphic tetranucleotide repeat (named DXpS) mapping to within a CpG island on Xp. This island is 191 bp downstream from the start of the repeat element, and contains sites for the HhaI, HpaII and BstUI methyl-sensitive restriction enzymes. We developed the DXpS and the HUMARA markers into a biplex methylation-based quantitative fluorescent PCR assay. For DXpS we observed twelve alleles with negligible stuttering. DXpS exhibited a heterozygosity rate of 87% (n = 60), matching that of HUMARA. The combined informativeness of the biplex assay was 98%. Random and nonrandom X-inactivation patterns inferred with DXpS in phenotypically normal females and haemophiliac females carrying a defective F8 gene were highly concordant (r^2^ = 0.96) with HUMARA patterns. DXpS represents a notable advancement in detecting X-chromosome inactivation due to the observed high rate of heterozygosity, negligible stuttering, concordance with HUMARA, and the apparent neutrality of allelic variants. Financial support: FAPESP (09/10615-7), FAPERJ, CNPq.
Nonlinear perturbations of linear elliptic systems at resonance
Authors: Korman Philip 
Published: November 2011

We consider a semilinear system

Δ
u

a
m
p
;
+
λ
v
+

b
1

(
v
)
=
f
(
x
)
,

x
∈
Ω
,

u
=
0

\ \ \ \,\,for

x
∈
∂
Ω

,

Δ
v

a
m
p
;
+

λ
1
2

λ

u
+

b
2

(
u
)
=
g
(
x
)
,

x
∈
Ω
,

v
=
0

\ \ \ \, for

x
∈
∂
Ω

,

\begin{align*} \Delta u&+ \lambda v+b_1(v)=f(x),\;\; x \in \Omega ,\quad \;\;\; u=0 \mbox {\ \ \ \,\,for $x \in \partial \Omega $} ,\\ \Delta v&+\frac {\lambda ^2 _1}{\lambda } u+b_2(u) =g(x),\;\; x \in \Omega ,\quad v=0 \mbox {\ \ \ \, for $x \in \partial \Omega $}, \end{align*}

whose linear part is at resonance. Here

λ
>
0

\lambda >0

and the functions

b
1

(
t
)

b_1(t)

and

b
2

(
t
)

b_2(t)

are bounded and continuous. Assuming that

t

b
i

(
t
)
>
0

tb_i(t)>0

for all

t
∈
R

t \in R

,

i
=
1
,
2

i=1,2

, and that the first harmonics of

f
(
x
)

f(x)

and

g
(
x
)

g(x)

lie on a certain straight line, we prove the existence of solutions. This extends a similar result for one equation, due to D.G. de Figueiredo and W.-M. Ni.
Age-Related Differences in the Effect of a Perceived Threat to Stability on Postural Control
Authors: Laufer Yocheved , Barak Yaron , Chemel Idit 
Published: November 2011

Abstract
Background. Studies indicate that the strategy for postural control may be affected by psychological factors, and that young adults respond to perceived threat to stability by increasing their ankle stiffness. The objective of this study was to compare the postural control strategy adopted by young and old adults when faced with postural threat induced by manipulating surface height.
Methods. Sixty elderly (mean age 77.5 ± 4.4 years) and 20 young volunteers (mean age 21.5 ± 3.7 years) participated in the study. Movement of the center of pressure (COP) was recorded for 60 seconds with a portable force-plate, as participants stood with eyes open and closed, both at ground level and 85 cm above ground level. Analysis of variance and Tukey–Kramer tests were conducted to determine the effects of age, postural threat, and vision on mean power frequency (MPF), on amplitude variability both in the anterior–posterior (AP) and medio-lateral (ML) directions, and on mean COP sway velocity, with the significance level set at p =.05.
Results. Postural threat did not affect COP measures for the young adults, whereas it induced greater changes in MPF in the AP and ML directions in the elderly participants. A similar trend was observed in the elderly group for amplitude variability in the ML direction and for mean COP sway velocity.
Conclusions. In comparison with young adults, elderly adults tend to have an exaggerated postural response to conditions that are perceived as threatening to stability. This response involves primarily increases in MPF, with limited compensatory decreases in amplitude variability observed only in the ML direction.
Variations in Service Use in the Program of All-Inclusive Care for the Elderly (PACE): Is More Better?
Authors: Temkin-Greener Helena , Bajorska Alina , Mukamel Dana B. 
Published: November 2011

AbstractBackground.  To date, there has been little empirical evidence about the relationship between service use and risk-adjusted functional outcomes among the frail, chronically ill elderly population. The Program of All-Inclusive Care for the Elderly (PACE) offers a unique model within which to investigate this relationship. We examine variation in the risk-adjusted utilization of acute, rehabilitative, and supportive services in PACE, and assess whether use of these services is associated with risk-adjusted functional outcomes.Methods.  The analytical sample included 42,252 records for 9853 individuals in 29 programs, over 3 years. Outcome was measured as change in functional status. Service use was assessed for hospital and nursing home admissions, day center attendance, therapy encounters, and personal home care. Mixed regression, generalized estimating equation (GEE) log-linear Poisson models and bootstrap procedures were used.Results.  We examined the marginal effect of the five services on functional status over time, having controlled for each program's risk-adjusted use of services and functional status of their enrollees. We observed a statistically significant association between hospital admissions and functional status. Sites using more hospital care had worse functional outcomes. We found no other significant relationship between functional change and service use. However, correlations between program-level measures showed that sites providing more day center care and more therapy had significantly fewer hospital admissions.Conclusions.  Findings suggest that programs with high hospital use may do well to re-examine and adjust the intensity of day center care. Greater focus on service provision in this setting may enhance care coordination and lead to reductions in hospitalizations, better outcomes, and cost savings.
Strains of Singlehood in Later Life: Do Race and Gender Matter?
Authors: Pudrovska Tetyana , Schieman Scott , Carr Deborah 
Published: November 2011

Abstract
Objectives. Few studies have identified the distinctive aspects of singlehood that are distressing to older adults. The objectives of our study were: (a) to examine whether divorced, widowed, and never-married older adults differed in their experiences of single strain, an indicator of chronic stressors associated with being unmarried; and (b) to assess whether the marital status differences we explored varied by gender and race.
Methods. Using data from a subsample of 530 unmarried older adults and ordinary least squares regression, we estimated main and interactive effects of marital status, gender, and race on single strain.
Results. Divorced and widowed persons reported higher single strain than never-married persons, although the magnitude of these effects varied considerably by race and gender. Never-married White women reported higher levels of single strain than their male counterparts. White widows and widowers exhibited higher single strain than widowed Black adults. Black women uniformly fared better than White women, whereas divorced and never-married Black men were not different from their White peers in terms of single strain.
Discussion. Psychological adjustment to singlehood among older adults reflects patterns of gender and race stratification and socialization over the life course.
Information seeking behaviour of library users at Metropolitan College of New York
Authors: Mavodza Judith 
Published: November 2011

PurposeThis paper seeks to comment on the information seeking behaviour of Metropolitan College of New York (MCNY) library users.Design/methodology/approachThe paper is based on studying database usage patterns from January 2007 to December 2010, as well as a literature review.FindingsThe results of the study suggest the position that database usage statistics can give insight into information behaviour and help inform collection management decisions, but on their own are not sufficient to give the complete picture.Practical implicationsThe outcomes may be useful in the design of library instruction sessions in future student groups in the College as well as in postsecondary settings, in addition to informing collection management decisions.Originality/valueA study of library database use patterns by library users brought out relevant information relating to the tailoring and enhancement of library service.
Changing technology
Authors: Rudall B.H. 
Published: November 2011

PurposeThis paper aims to review current research with particular reference to new research and development initiatives and examines some of the changes since 1971.Design/methodology/approachA general review and survey of selected research and development topics is given and some new challenges and applications of future technologies are considered with particular reference to their impact and potential.FindingsThe paper illustrates the multi‐ and trans‐disciplinary nature of studies in cybernetics, systems and management sciences, with a view to further research and development activity. It comments on some of the changes that have occurred in the late twentieth and early twenty‐first century.Practical implicationsThe choice of review provides an awareness of current trends in these areas of endeavour.Originality/valueThe reviews are selected from a global database and give a studied assessment of current research and development initiatives. With notes on the contribution of Kybernetes to communicating changes in technology.
Benchmarking leading supply chain management and logistics strategy journals
Authors: Ellinger Alexander E. , Chapman Karen 
Published: November 2011

PurposeThe purpose of this paper is to compare the performance of the supply chain management and logistics (SCML) strategy journals recently added to the Web of Science database to the performance of journals from other business disciplines also recently admitted to the Web of Science database on the Thomson Reuters selection process criteria.Design/methodology/approachA benchmarking approach is used to examine the relative performance of SCML journals over a two‐year period.FindingsThe two sets of journals' publishing standards and the number of citations for authors from the two groups are quite similar. Journals in the benchmark group had greater international diversity and balance among their authors, editors and editorial boards, while the SCML journals were cited more often in Web of Science and had lower self‐citation rates.Research limitations/implicationsThis study required a great deal of counting, and some of the data were collected multiple times to check for accuracy. Still, it is possible that mistakes were made. Data from different years and different authors may have yielded different results.Practical implicationsThe recent addition of six journals to the Web of Science database allows leading SCML journals to compete on a level playing field with other top‐tier business journals and can therefore be regarded as a major step forward in the maturation of the discipline, as well as recognition of the quality of the journals.Originality/valueThe authors' benchmarking study extends previous examinations of SCML journals relative to leading journals in other business fields, and offers direction for how SCML researchers and journal editors can continue to contribute to the maturation of the discipline.
Israeli response to mass death
Authors: Levinson Jay 
Published: November 2011

PurposeIn recent years Israel has had extensive experience of dealing with mass disasters. Its response mechanism is always adapting itself to new threat patterns. This paper aims to focus on Israel's disaster response activities.Design/methodology/approachThe paper is based on personal research and experience and reviews disaster response in Israel.FindingsFrom the establishment of the state of Israel in 1948 until the late‐1980s, disaster response, even in the civilian sector, was considered a military responsibility. The Israel Police was viewed at best as a support to the army, rendering purely technical assistance such as fingerprint comparison for victim identification. Although the civilianization of response became predominant during recurrent terrorist attacks of the 1990s, the army still continues its planning under the previous model as governmental authorities refrain from intervention. In the new working framework the Israel Police and other civilian offices, both official and volunteer, have accrued considerable practical experience in responding to disasters and mass death situations.Practical implicationsNumerous lessons learnt with practical application are described. The paper highlights that what was successful yesterday gives no guarantee for the future. Planning must always be up to date with current technology and trends.Originality/valueThe paper is original and no similar work exists.