bluuebunny/crossref_metadata_2025 huggingface dataset:
Can Online Surveys Substitute Traditional Modes? An Error-Based Comparison of Online and On-Site Tourism Destination Surveys
Authors: Kim Namhyun , Yu Xiaojuan , Schwartz Zvi
Published: May 2013

Given the rising popularity of online research in tourism and hospitality, an imperative question is whether it can substitute or complement the more traditional survey modes. By measuring and controlling for coverage, sampling, nonresponse, and measurement errors, this study explores
the validity of the online survey mode, comparing responses to a visitor survey across the following two modes: online and the frequently used tourism research tool of on-site, face-to-face survey. The results reveal a lower response rate to the online survey, and differences between the two
tested modes in demographics (gender, travel party size, and age composition), tripographics, and travel behaviors. The findings support the notion that a mixed-mode survey has the potential of increasing response rate, mitigating the nonresponse error, and can be used to target certain segments
for bet- ter representation.
Incidence of Spondyloarthropathy in Patients with Ulcerative Colitis: A Population-based Study
Authors: Shivashankar Raina , Loftus Edward V. , Tremaine William J. , Harmsen W. Scott , Zinsmeister Alan R. , Matteson Eric L.
Published: May 2013

Objective.

Spondyloarthritis (SpA) is an important extraintestinal manifestation of inflammatory bowel disease (IBD). We assessed the cumulative incidence and clinical spectrum of SpA in a population-based cohort of patients with ulcerative colitis (UC).

Methods.

The medical records of a population-based cohort of residents of Olmsted County, Minnesota, USA, diagnosed with UC from 1970 through 2004 were reviewed. Patients were followed longitudinally until moving from Olmsted County, death, or June 30, 2011. We used the European Spondylarthropathy Study Group, Assessment of Spondyloarthritis International Society (ASAS) criteria, and modified New York criteria to identify patients with SpA.

Results.

The cohort included 365 patients with UC, of whom 41.9% were women. The median age at diagnosis of UC was 38.6 years (range 1.2–91.4). Forty patients developed SpA based on the ASAS criteria. The cumulative incidence of a diagnosis of SpA after an established diagnosis of UC was 4.8% at 10 years (95% CI 95% CI 2.2%–7.3%), 13.7% at 20 years (95% CI 9.0%–18.1%), and 22.1% at 30 years (95% CI 4.3%–29.1%).

Conclusion.

The cumulative incidence of all forms of SpA increased to about 22% by 30 years from UC diagnosis. This value is slightly greater than what we previously described in a population-based cohort of Crohn disease diagnosed in Olmsted County over the same time period. SpA and its features are associated with UC, and heightened awareness on the part of clinicians is needed for diagnosing and managing them.
Serum Urate and Incidence of Kidney Disease Among Veterans with Gout
Authors: Krishnan Eswar , Akhras Kasem S. , Sharma Hari , Marynchenko Maryna , Wu Eric , Tawk Rima H. , Liu Jinan , Shi Lizheng
Published: May 2013

Objective.

To study the association between serum urate level (sUA) and the risk of incident kidney disease among US veterans with gouty arthritis.

Methods.

From 2002 through 2011 adult male patients with gout who were free of kidney disease were identified in the data from the Veterans Administration VISN 16 database and were followed until incidence of kidney disease, death, or the last available observation. Accumulated hazard curves for time to kidney disease were estimated for patients with average sUA levels > 7 mg/dl (high) versus ≤ 7 mg/dl (low) based on Kaplan-Meier analyses; and statistical comparison was conducted using a log-rank test. A Cox proportional hazard model with time-varying covariates was used to estimate the unadjusted and adjusted hazard ratios for kidney disease.

Results.

Eligible patients (n = 2116) were mostly white (53%), with average age 62.6 years, mean body mass index 31.2 kg/m2, and high baseline prevalence of hypertension (93%), hyperlipidemia (67%), and diabetes (20%). Mean followup time was 6.5 years. The estimated rates of all incident kidney disease in the overall low versus high sUA groups were 2% versus 4% at Year 1, 3% versus 6% at Year 2, and 5% versus 9% at Year 3, respectively (p < 0.0001). After adjustment, high sUA continued to predict a significantly higher risk of kidney disease development (HR 1.43, 95% CI 1.20–1.70).

Conclusion.

Male veterans with gout and sUA levels > 7 mg/dl had an increased incidence of kidney disease.
Genèse et enjeux épistémologiques de la psychologie clinique périnatale
Authors: Missonnier Sylvain
Published: May 2013

L’exploration de la genèse récente et des enjeux épistémologiques de la psychologie clinique périnatale impose un rappel de la source matricielle de la psychologie clinique qui se définit par son objet à double face : l’exploration du quotidien de la réalité psychique consciente/inconsciente, subjective/intersubjective du sujet en situation sous ses formes individuelle/groupale, « normales »/« pathologiques » ; la mise en œuvre pratique de dispositifs de rencontres intersubjectives propices à l’observation contenante de la processualité associative verbale/non verbale, focale/libre et à la mise en sens subjectivante de sa phénoménologie et de ses obstacles conflictuels inhibiteurs et dissociatifs. La méthodologie clinique de cette réalité psychique est inséparable de sa mise en œuvre croisée chez tous les acteurs en présence. Aussi, la première face de l’objet de la psychologie clinique périnatale sera l’exploration du quotidien de la réalité psychique consciente/inconsciente, subjective/intersubjective du sujet en situation de (re)devenir parent, naître humain et être soignant sous ses formes « normales »/« pathologiques », individuelle, conjugale et groupale. L’attention envers les possibilités des parents et des soignants à bénéficier de cadres intimes, privés et institutionnels propices à la métabolisation de cette amplification de la processualité associative verbale et non verbale (en particulier somatique) inhérente aux transformations biopsychiques de la parentalisation et à son accompagnement professionnel, constitue la deuxième face de l’objet de la psychologie clinique périnatale. La promesse heuristique de la psychologie clinique périnatale est discutée.
L'audacieuse clinique du couple
Authors: Bastien Danielle , Janssen Christophe
Published: May 2013

Les deux auteurs, une psychanalyste et un psychothérapeute, ayant une pratique commune en clinique de couple, présentent leurs cadres de travail et la visée de cette clinique particulière. Et ils rappellent qu’il n’était pas aisé historiquement de soutenir une clinique du couple dans une perspective psychanalytique ! Cela étant, les auteurs proposent une filiation épistémologique à divers auteurs (Freud, Lacan, Winnicott, Roussillon) soulignant la difficulté pour la psychanalyse d’intégrer la notion de couple, et pourtant la pertinence de le faire si l’on définit analytiquement le concept de lien. Par ailleurs, il s’agit pour chacun d’eux de préciser la façon dont ils pensent ce lien. « Complaisance mutuelle inconsciente » si on le situe au niveau des fantasmes mis en tension, « illusion conjugale » si on l’énonce en termes de transitionalité. Enfin et pour conclure, ils définissent la visée de ce travail clinique, encore souvent méconnu dans le monde analytique.
Clinical and Transitional Care: Considerations to Optimize Functional Recovery Following Hip Fracture
Authors: Eckard Travis , Cadogan Mary P.
Published: May 2013

Between 30% and 40% of community-dwelling older adults in the United States fall at least once each year, and approximately 10% of these falls are associated with a major injury such as a hip fracture. Return to maximum level of functional status following surgery requires individualized rehabilitation programs and may involve multiple care transitions. Using an individual example, this article provides context for meeting rehabilitation goals during transitional care following hip fractures. Understanding recommended clinical management strategies during the acute perioperative period and the rationale for postsurgical rehabilitation decisions based on clinical assessment, program eligibility, and Medicare coverage will allow all health professionals to provide optimal guidance and maximize functional recovery for older adults with hip fractures.
Evaluation of the Ability of a Photocoagulator to Rupture the Retinal Vein and Bruch’s Membrane for Potential Vein Bypass in Retinal Vein Occlusion
Authors: McAllister Ian L. , Vijayasekaran Sarojini , Xia Wei , Yu Dao-Yi
Published: May 2013

BACKGROUND AND OBJECTIVE:

To evaluate the laser power required to rupture both the retinal vein and Bruch’s membrane in a porcine model using a new laser system for treatment of retinal vein occlusion.

MATERIALS AND METHODS:

The retina was treated in areas with and without an overlying vein. Sections through the laser sites were stained for light and transmission electron microscopy. The percentage of the laser sites with rupture of the retinal vein and Bruch’s membrane, the degree of tissue damage, and the diameter of the rupture in Bruch’s membrane were determined.

RESULTS:

The rate of vein rupture was 75% at 3 W, and rupture of Bruch’s membrane was achieved at all powers tested. The mean diameter of the rupture in Bruch’s membrane increased with laser power.

CONCLUSION:

The Integre Duo laser system (Ellex Medical Lasers, Adelaide, Australia) is capable of rupturing the retinal vein and Bruch’s membrane at lower powers than prior laser systems.

[
Ophthalmic Surg Lasers Imaging Retina.
2013;44:268–273.]
High-Resolution Multimodal Imaging of Multiple Evanescent White Dot Syndrome
Authors: Boretsky Adam , Mirza Sarah , Khan Faraz , Motamedi Massoud , van Kuijk Frederik J.G.M.
Published: May 2013

The integrity of macular morphology was examined in a patient with multiple evanescent white dot syndrome (MEWDS) diagnosed through clinical and investigational adaptive optics (AO) retinal imaging techniques. Imaging was performed during the acute and recovery phases to examine changes in retinal morphology, revealing characteristic small multifocal white dots in the perifoveal region and a granular appearance in the fovea. Fluorescein angiography revealed early and intermediate hyperfluorescence, and regions of decreased fundus autofluorescence were observed. Photoreceptor disruption was apparent during the acute phase and recurrence. Conventional multimodal imaging combined with AO imaging offers more insight into the pathology of MEWDS by providing complementary views of the retina throughout the acute phase, recovery, and recurrence.

[
Ophthalmic Surg Lasers Imaging Retina.
2013;44:296–300.]
Traumatic Macular Hole From Intentional Basketball Overinflation
Authors: Yonekawa Yoshihiro , Miller John B. , Turalba Angela V. , Eliott Dean
Published: May 2013

We report a new mechanism of ocular trauma. A basketball was intentionally overinflated until it exploded, resulting in corneal edema, hyphema, iritis, vitreous hemorrhage, commotio retinae, and a macular hole. The macular hole did not close after observation and subsequent pars plana vitrectomy with posterior hyaloid removal, but a repeat vitrectomy with internal limiting membrane peeling resulted in hole closure. Basketball overinflation to the point of explosion is a potentially blinding practice of which the public and manufacturers should be made aware.

[
Ophthalmic Surg Lasers Imaging Retina.
2013;44:303–305.]
Injury Rehabilitation Overadherence: Preliminary Scale Validation and Relationships With Athletic Identity and Self-Presentation Concerns
Authors: Podlog Leslie , Gao Zan , Kenow Laura , Kleinert Jens , Granquist Megan , Newton Maria , Hannon James
Published: May 2013

Context:

Evidence suggests that nonadherence to rehabilitation protocols may be associated with worse clinical and functional rehabilitation outcomes. Recently, it has been recognized that nonadherence may not only reflect a lack of rehabilitation engagement but that some athletes may “overadhere” to their injury-rehabilitation regimen or risk a premature return to sport. Presently, no measure of overadherence exists, and correlates of overadherence and risking a premature return to sport remain uncertain.

Objective:

To provide initial validation of a novel injury-rehabilitation overadherence measure (study 1) and to examine correlates of overadherence and risking a premature return to sport (study 2).

Design:

Cross-sectional study.

Setting:

High school athletes (study 1) and collegiate athletes (study 2).

Patients or Other Participants:

In study 1, 118 currently injured US adolescent athletes competing in a range of high school sports participated. In study 2, 105 currently injured collegiate athletes (National Collegiate Athletic Association Divisions I–III) volunteered.

Main Outcome Measure(s):

The Rehabilitation Overadherence Questionnaire was a novel instrument developed to assess injured athletes' tendency toward overadherence behaviors and beliefs. We used an adapted version of the Injury Psychological Readiness to Return to Sport Scale to assess the tendency to risk a premature return to sport.

Results:

In study 1, the construct validity of the overadherence measure was supported using principal axis factoring. Moreover, bivariate correlation and regression analyses indicated that self-presentation concerns and athletic identity were positive predictors of adolescent rehabilitation overadherence and a premature return to sport. Study 2 provided support for the 2-factor structure of the overadherence measure found in study 1 via confirmatory factor analysis. Further support for the relationship among self-presentation concerns, athletic identity, and rehabilitation overadherence was also noted.

Conclusions:

The Rehabilitation Overadherence Questionnaire is a valid and reliable measure of overadherence.
Factor V Leiden Thrombophilia in a Female Collegiate Soccer Athlete: A Case Report
Authors: Erickson Kendra , Powers Michael E.
Published: May 2013

Objective:

To raise awareness among health care providers caring for an active population to an uncommon genetic mutation that increases the risk for a potentially fatal venous thromboembolism.

Background:

A 19-year-old previously healthy female collegiate soccer athlete complained of coughing and progressively decreased exercise tolerance, which were attributed to a recent illness and lack of sleep. Later that evening, she complained of dyspnea and pleuritic pain and was referred to the emergency department. Bilateral pulmonary emboli were identified with computed tomography, and a hypercoagulable panel revealed that the patient was heterozygous for the factor V Leiden mutation.

Differential Diagnosis:

Pneumonia, pneumothorax, pericarditis, pleuritis, gastroesophageal reflux disease, pulmonary embolism.

Treatment:

Intravenous heparin therapy was initiated immediately in the emergency department. This was followed by inpatient anticoagulant therapy for 5 days and outpatient anticoagulant therapy for an additional 12 months. During this time, the patient was unable to participate in soccer drills or return to competition and was limited to conditioning activities due to the risk of increased bleeding time.

Uniqueness:

Documented cases of pulmonary embolism in a young athletic population are rare and are usually associated with genetic risk factors. Factor V Leiden is a relatively uncommon genetic mutation that dramatically increases the risk for venous thromboembolism. Although the fatality rate in this population is low, fatality is preventable if the condition is recognized early and managed properly.

Conclusions:

Athletes should be encouraged to communicate with their athletic trainers regarding any changes in health status or medication usage. When an athlete presents with nonspecific symptoms such as dyspnea and chest pain, athletic trainers should consider the possibility of pulmonary embolism. A high degree of suspicion results in early diagnosis and treatment and may prevent a fatal event.
Vision 2025 and the Bible translation movement
Authors: Franklin Kirk J. , Niemandt Cornelius J.P.
Published: May 2013

Complex questions have arisen about how Christian mission agencies function within a globalised context. The changing context has impacted on how the missio Dei has been worked out within these agencies and this has had implications of a theological and missiological nature in particular as to how the agencies have interacted with the church worldwide. This has lead to new paradigms of how mission is conceptualised. The growth of the church worldwide in newer soil has forced mission agencies such as the Wycliffe Global Alliance (WGA) to re-evaluate their place in the world. It has been assumed that as resources have decreased from parts of the world where the WGA has had its traditional roots, there are missiological factors in determining how this impacts on the WGA. There are many missiological implications for the WGA that come from influences in church history on the importance of the translatability of the gospel especially in the context of Bible translation. These have impacted the WGA’s understanding of itself and in particular of how it has interpreted and reinterpreted its Vision 2025. When the missio Dei converges with outcomes of globalisation there are numerous implications for an agency such as the WGA. Consequently, the article concludes that none of these matters can be ignored. Instead they must be explored and lessons learnt from them that can be passed along to others in similar situations.
Novel Integrative Genomics Approach for Associating GWAS Information with Intrinsic Subtypes of Breast Cancer
Authors: Hicks Chindo , Koganti Tejaswi , Brown Alexandra S. , Monico Jesus , Backus Kandis , Miele Lucio
Published: May 2013

Genome-wide association studies (GWAS) have achieved great success in identifying common variants associated with increased risk of developing breast cancer. However, GWAS do not typically provide information about the broader context in which genetic variants operate in different subtypes of breast cancer. The objective of this study was to determine whether genes containing single nucleotide polymorphisms (SNPs, herein called genetic variants) are associated with different subtypes of breast cancer. Additionally, we sought to identify gene regulator networks and biological pathways enriched for these genetic variants. Using supervised analysis, we identified 201 genes that were significantly associated with the six intrinsic subtypes of breast cancer. The results demonstrate that integrative genomics analysis is a powerful approach for linking GWAS information to distinct disease states and provide insights about the broader context in which genetic variants operate in different subtypes of breast cancer.
Characterization of the Kynurenine Pathway and Quinolinic Acid Production in Macaque Macrophages
Authors: Lim Chai K. , Yap Margaret M.C. , Kent Stephen J. , Gras Gabriel , Samah Boubekeur , Batten Jane C. , De Rose Robert , Heng Benjamin , Brew Bruce J. , Guillemin Gilles J.
Published: May 2013

The kynurenine pathway (KP) and one of its end-products, the excitotoxin quinolinic acid (QUIN), are involved in the pathogenesis of several major neuroinflammatory brain diseases. A relevant animal model to study KP metabolism is now needed to assess whether intervention in this pathway may improve the outcome of such diseases. Humans and macaques share a very similar genetic makeup. In this study, we characterized the KP metabolism in macaque primary macrophages of three different species in comparison to human cells. We found that the KP profiles in simian macrophages were very similar to those in humans when challenged with inflammatory cytokines. Further, we found that macaque macrophages are capable of producing a pathophysiological concentration of QUIN. Our data validate the simian model as a relevant model to study the human cellular KP metabolism in the context of inflammation.
On Gorenstein Flat Preenvelopes of Complexes
Authors: Yang Gang , Liu Zhongkui , Liang Li
Published: May 2013

In this paper we show that if the class

{\cal B}

of

R

-modules is closed under well ordered direct limits, then the class

{\cal B}

is preenveloping in the category of

R

-modules if and only if the class

dw{\cal B}

is preenveloping in the category of

R

-complexes, where

dw{\cal B}

denotes the class of all complexes with all components in

{\cal B}

. As an immediate consequence, we get that over commutative and Noetherian rings with dualizing complexes every complex admits a Gorenstein flat preenvelope.
The Category of Partial Doi–Hopf Modules and Functors
Authors: Chen Q.-C. , Wang D.-G.
Published: May 2013

Let

(H, A, C)

,

(H', A', C')

be two partial Doi-Hopf datums consisting of a Hopf algebra

H

, a partial right

H

-comodule algebra

A

and a partial right

H

-module coalgebra. Given

{\alpha}: H \rightarrow H '

,

{\beta}: A \rightarrow A '

and

{\gamma}: C \rightarrow C'

, we define an induction functor between the category

{\cal M}(H)^{C}_{A}

of all partial Doi-Hopf modules and the category

{\cal M}(H')^{C'}_{A'}

, and we prove that this functor has a right adjoint. Specially, we then give necessary and sufficient conditions for the functor

F :{\cal M}(H)^{C}_{A} \rightarrow {\cal M}(H)_{A}

(exactly the category of right

A

-modules). This leads to a generalized notion of integrals. Moreover, from these results, we deduce a version of Maschke-type Theorems for partial Doi–Hopf modules. The applications of our results are considered.
Ostrowski Type Inequalities Related to the Generalized Baouendi-Grushin Vector Fields
Authors: Dou Jingbo , Han Yazhou
Published: May 2013

In this paper, we employ a new method to prove a representation formula related to the generalized Baouendi-Grushin vector fields, and then the Ostrowski type inequalities is established in the ball and bounded domain, respectively, via the representation formula and

L^\infty

norm of the horizontal gradient. In addition, in the same spirit, we show the Hardy inequalities with boundary term related to the generalized Baouendi-Grushin vector fields.
$SE$-Supplemented Subgroups of Finite Groups
Authors: Guo Wenbin , Skiba Alexander N. , Yang Nanying
Published: May 2013

Let

G

be a finite group,

H

a subgroup of

G

and

H_{seG}

be the subgroup generated by all subgroups of

H

which are

S

-quasinormally embedded in

G

. Then we say that

H

is

SE

-supplemented in

G

if

G

has a subgroup

T

such that

HT=G

and

H\cap T\leq H_{seG}

. We investigate the influence of

SE

-quasinormally embedded of some subgroups on the structure of finite groups. Our results improve and extend a series of recent results.
Berezin Quantization and Holomorphic Representations
Authors: Cahen Benjamin
Published: May 2013

Let

G

be a quasi-Hermitian Lie group and let

{\pi}

be a unitary highest weight representation of

G

realized in a reproducing kernel Hilbert space of holomorphic functions. We study the Berezin symbol map

S

and the corresponding Stratonovich–Weyl map

W

which is defined on the space of Hilbert–Schmidt operators acting on the space of

{\pi}

, generalizing some results that we have already obtained for the holomorphic discrete series representations of a semi-simple Lie group. In particular, we give explicit formulas for the Berezin symbols of the representation operators

{\pi} (g)

(for

g\in G

) and

d{\pi} (X)

(for

X

in the Lie algebra of

G

) and we show that

S

provides an adapted Weyl correspondence in the sense of [B. Cahen,
Weyl quantization for semidirect products,
Differential Geom. Appl. 25 (2007), 177–190]. Moreover, in the case when

G

is reductive, we prove that

W

can be extended to the operators

d{\pi} (X)

and we give the expression of

W(d{\pi} (X))

. As an example, we study the case when

{\pi}

is a generic unitary representation of the diamond group.
Perfect numbers and finite groups
Authors: De Medts Tom , Maróti Attila
Published: May 2013

A number is perfect if it is the sum of its proper divisors. We extend this notion to finite groups by calling a finite group a Leinster group if its order is equal to the sum of the orders of all proper normal subgroups of the group. We provide some general theory, we present examples of Leinster groups, and we prove some related results.
On the (non-)Contractibility of the Order Complex of the Coset Poset of an Alternating Group
Authors: Patassini Massimiliano
Published: May 2013

Let Alt

_k

be the alternating group of degree

k

. In this paper we prove that the order complex of the coset poset of Alt

_k

is non-contractible for a big family of

k\in {\mathbb N}

, including the numbers of the form

k=p+m

where

m\in \{3,\ldots,35\}

and

p> k/2

. In order to prove this result, we show that

P_G(-1)

does not vanish, where

P_G(s)

is the Dirichlet polynomial associated to the group

G

. Moreover, we extend the result to some monolithic primitive groups whose socle is a direct product of alternating groups.
On the Functionally Countable Subalgebra of $C(X)$
Authors: Ghadermazi Mostafa , Karamzadeh O.A.S. , Namdari M.
Published: May 2013

Let

{C_c{{\char 40}}X{{\char 41}}} =\{\,f\in C(X): f(X) \hbox{ is countable}\}

. Similar to

C(X)

it is observed that the sum of any collection of semiprime (resp. prime) ideals in the ring

{C_c{{\char 40}}X{{\char 41}}}

is either

{C_c{{\char 40}}X{{\char 41}}}

or a semiprime (resp. prime) ideal in

{C_c{{\char 40}}X{{\char 41}}}

. For an ideal

I

in

{C_c{{\char 40}}X{{\char 41}}}

, it is observed that

I

and

\sqrt{I}

have the same largest

z_c

-ideal. If

X

is any topological space, we show that there is a zero-dimensional space

Y

such that

{C_c{{\char 40}}X{{\char 41}}} \cong {C_c{{\char 40}}Y{{\char 41}}}

. Consequently, if

X

has only countable number of components, then

{C_c{{\char 40}}X{{\char 41}}} \cong C(Y)

for some zero-dimensional space

Y

. Spaces X for which

{C_c{{\char 40}}X{{\char 41}}}

is regular (called

CP

-spaces) are characterized both algebraically and topo log ically and it is shown that

P

-spaces and

CP

-spaces coincide when

X

is zero-dimensional. In contrast to

C^*(X)

, we observe that

{C_c{{\char 40}}X{{\char 41}}}

enjoys the algebraic properties of regularity,

\aleph _{_0}

-selfinjectivity and some others, whenever

C(X)

has these properties. Finally an example of a space

X

such that

{C_c{{\char 40}}X{{\char 41}}}

is not isomorphic to any

C(Y)

is given.
An Identity on Partial Generalized Automorphisms of Prime Rings
Authors: Huang Shuliang
Published: May 2013

Let

R

be a prime ring with center

Z(R)

,

T:R \,\longrightarrow \,R

be a non-zero partial generalized automorphism of

R

,

L

a Lie ideal of

R

,

s\geq 0, t\geq 0

and

n\geq 1

fixed integers, such that

(u^{s}(T(u)\circ u)u^{t})^{n}=0

for all

u\in L

. If either Char

(R)> n+1

or Char

(R)=0

, then

L\subseteq Z(R)

.
A Geometric Approach for Convexity in Some Variational Problem in the Gauss Space
Authors: Goldman M.
Published: May 2013

In this short note we prove the convexity of minimizers of some variational problem in the Gauss space. This proof is based on a geometric version of an older argument due to Korevaar.
Complete Determination of the Number of Galois Points for a Smooth Plane Curve
Authors: Fukasawa Satoru
Published: May 2013

Let

C

be a smooth plane curve. A point

P

in the projective plane is said to be Galois with respect to

C

if the function field extension induced by the projection from

P

is Galois. We denote by

{\delta} (C)

(resp.

{\delta} '(C)

) the number of Galois points contained in

C

(resp. in

{\mathbb P}^2 \setminus C

). In this article, we determine the numbers

{\delta} (C)

and

{\delta} '(C)

in any remaining open cases. Summarizing results obtained by now, we will present a complete classification theorem of smooth plane curves by the number

{\delta} (C)

or

{\delta} '(C)

. In particular, we give new characterizations of Fermat curve and Klein quartic curve by the number

{\delta} '(C)

.
Primary Extramedullary Plasmacytoma of Maxillary Sinus
Authors: Ray Chinmaya Sundar , Mishra Aparajita , Khatua Rabindra Kumar , Baliarsingh Prasenjit
Published: May 2013

A rare case of extramedullary plasmacytoma of maxillary sinus in a 58-year-old man presenting with right-sided nasal obstruction and intermittent blood tinged nasal crusting. Nasal endoscopy revealed that a dark red colored mass arising from the lateral wall of nose. A biopsy specimen was diagnosed as plasmacytoma (Kappa light chain type). Serum and urine electrophoresis failed to detect any myeloma component or Bence-Jones protein. All other screening tests to rule out multiple myeloma were negative. These findings confirmed the diagnosis of extramedullary plasmacytoma. The mass was completely excised by lateral rhinotomy approach. No recurrence has been noted at the end of 6 months follow-up.

How to cite this article

Ray CS, Mishra A, Khatua RK, Baliarsingh P. Primary Extramedullary Plasmacytoma of Maxillary Sinus. Clin Rhinol An Int J 2013;6(1):51-53.
Endoscopic Management of Nasal Myiasis: A 10 Years Experience
Authors: Agrawal Arpit , Goyal Anuj , Yadav SPS , Ranga Rupender K
Published: May 2013

Background

The present study was undertaken to compare the efficacy of endoscopic removal with conventional techniques in nasal myiasis patients.

Materials and methods

Out of 144, 72 nasal myiasis patients treated using Hopkins rigid nasal endoscope and visible caudal end of maggots was grasped with Blakesley forceps and removed during endoscopy. Rests were identified from crawling movements or the visible caudal end was buried in necrotic material. Complete clearance of cavernous cavity of maggots in affected nasal cavity from anterior nares to choanae was done and same was repeated on other side if needed.

Results

The mean age in two groups was 57.5 years (range 40-60) in nasal myiasis patients whereas there were 20% males and 80% females. Mean duration of nasal symptom in both groups was 2 days. Endoscopically mean 120 maggots (range: 90-160) were removed in first sitting as compared to conventional technique where mean of 80 (range: 40-90) were achieved. The mean duration of endoscopic treatment was 2 days whereas in control group it was 5 days. The difference was statistically significant (p < 0.001).

Conclusion

Nasal endoscopic procedure is superior to the manual extraction method for removal of maggots. The larvae located in deep and inaccessible areas can be identified and removed easily. The disease was controlled in shorter time and in fewer sittings. Further the quick and complete eradication of myiasis ensures less damage to the intranasal tissues.

How to cite this article

Ranga RK, Yadav SPS, Goyal A, Agrawal A. Endoscopic Management of Nasal Myiasis: A 10 years Experience. Clin Rhinol An Int J 2013;6(1):58-60.
Studies of gravity wave propagation in the mesosphere observed by MU radar
Authors: Lue H. Y. , Kuo F. S. , Fukao S. , Nakamura T.
Published: May 2013

Abstract. Mesospheric data were analyzed by a composite method combining phase and group velocity tracing technique and the spectra method of Stokes parameter analysis to obtain the propagation parameters of atmospheric gravity waves (AGW) in the height ranges between 63.6 and 99.3 km, observed using the MU radar at Shigaraki in Japan in the months of November and July in the years 1986, 1988 and 1989. The data of waves with downward phase velocity and the data of waves with upward phase velocity were independently treated. First, the vertical phase velocity and vertical group velocity as well as the characteristic wave period for each wave packet were obtained by phase and group velocity tracing technique. Then its horizontal wavelength, intrinsic wave period and horizontal group velocity were obtained by the dispersion relation. The intrinsic frequency and azimuth of wave vector of each wave packet were checked by Stokes parameters analysis. The results showed that the waves with intrinsic periods in the range 30 min–4.5 h had horizontal wavelength ranging from 25 to 240 km, vertical wavelength from 2.5 to 12 km, and horizontal group velocities from 15 to 60 m s−1. Both upward moving wave packets and downward moving wave packets had horizontal group velocities mostly directed in the sector between directions NNE (north-north-east) and SEE in the month of November, and mostly in the sector between directions NW and SWS in the month of July. Comparing with mean wind directions, the gravity waves appeared to be more likely to propagate along with mean wind than against it. This apparent prevalence for downstream wave packets was found to be caused by a systematic filtering effect existing in the process of phase and group velocity tracing analysis: A significant portion of upstream wave packets might have been Doppler shifted out of the vertical range in phase and group velocity tracing analysis.
Uncovering the 2010 Haiti earthquake death toll
Authors: Daniell J. E. , Khazai B. , Wenzel F.
Published: May 2013

Abstract. Casualties are estimated for the 12 January 2010 earthquake in Haiti using various reports calibrated by observed building damage states from satellite imagery and reconnaissance reports on the ground. By investigating various damage reports, casualty estimates and burial figures, for a one year period from 12 January 2010 until 12 January 2011, there is also strong evidence that the official government figures of 316 000 total dead and missing, reported to have been caused by the earthquake, are significantly overestimated. The authors have examined damage and casualties report to arrive at their estimation that the median death toll is less than half of this value (±137 000$). The authors show through a study of historical earthquake death tolls, that overestimates of earthquake death tolls occur in many cases, and is not unique to Haiti. As death toll is one of the key elements for determining the amount of aid and reconstruction funds that will be mobilized, scientific means to estimate death tolls should be applied. Studies of international aid in recent natural disasters reveal that large distributions of aid which do not match the respective needs may cause oversupply of help, aggravate corruption and social disruption rather than reduce them, and lead to distrust within the donor community.
Open access book publishing in writing studies: A case study
Authors: Bazerman Charles , Blakesley David , Palmquist Mike , Russell David
Published: May 2013

The publication of scholarly books has been shaped strongly in recent decades by two factors: assessments by publishers of the potential market for books and the influence of publisher's reputations on tenure and promotion decisions. This article reflects on the choices made by a group of senior scholars in the field of composition and rhetoric as they conceived of and published an open access book on activity theory and writing and, subsequently, published an open access book series in the area of rhetoric and composition. The implications of open access book publishing for access to scholarly work and tenure-and-promotion decisions are considered.
Mass book digitization: The deeper story of Google Books and the Open Content Alliance
Authors: Leetaru Kalev
Published: May 2013

The Google Books and Open Content Alliance (OCA) initiatives have become the poster children of the access digitization revolution. With their sights firmly set on creating digital copies of millions upon millions of books and making them available to the world for free, the two projects have captured the popular imagination. Yet, such scale comes at a price, and certain sacrifices must be made to achieve this volume. With its greater visibility, most studies have focused on Google Books, addressing limitations of its image and metadata quality. Yet, there has been surprisingly little comparative work of the two endeavors, exploring the relationship between these two peers and their deeper similarities, rather than their obvious surface differences. While the academic community has lauded OCA's "open" model and condemned the proprietary Google, all is not always as it seems. Upon delving deeper into the underpinnings of both projects, we find Google achieves greater transparency in many regards, while OCA's operational reality is more proprietary than often thought. Further, significant concerns are raised about the long-term sustainability of the OCA rights model, its metadata management, and its transparency that must be addressed as OCA moves forward.
Complicit subversions: Cultural new media activism and ‘high’ theory
Authors: Hoofd Ingrid Maria
Published: May 2013

How do current technological structures change the activist landscape and its use of certain academic theories? And what, in turn, could this relationship tell us about a possible exacerbation of contemporary forms of in- and exclusion? This article will argue that the productive crossovers in the Internet between cultural new media activism and ‘high’ theory mark precisely the humanist subject’s complicity in contemporary technocratic neo-liberalism. It will do so by analyzing in detail how cultural new media activism defines itself in relation to the ‘complicit’ university with its ‘elitist’ theories, especially through these activists’ problematic perception of the Internet as a neutral realm.
Learning together apart: Distance education in a virtual world
Authors: Holmberg Kim , Huvila Isto
Published: May 2013

A course in information studies was partly held in the virtual world of Second Life. Second Life was used as a platform to deliver lectures and as a place for organizing group assignments and having discussions. Students' opinions about Second Life were studied and compared to their opinions about more traditional methods in education. The results show a lower threshold for participation in lectures. According to the students, Second Life should not replace face-to-face education, but it could serve as an excellent addition to other more traditional methods and platforms used in education. The students also considered that lectures held in Second Life were much more "fun" than those using other methods. This particular aspect, and its effect on learning outcomes, requires further research. This research demonstrates that Second Life has potential as a learning environment in distance education.
Webtapping: Securing the Internet to save us from transnational terror?
Authors: Bronk Chris
Published: May 2013

Considerable debate surrounds the issue of wiretapping as a tool for the collection of intelligence in combating trans-national organizations employing terror tactics in pursuit of their political agendas. This paper argues that the language used to frame this debate is outmoded. At root conventional wisdom of the wiretapping issue in the United States is framed by a general consensus that fails to account for now ubiquitous digital means of communication. In addition, the issue of information security, the protection of computer networks, government and private alike, but often tied in some way to critical infrastructure, is inextricably linked to digital eavesdropping. The author argues that while attempts to understand the totality of network activity may be of great value in protection of critical infrastructure, this webtapping presents potentially grave implications for individual liberties and may produce limited payoffs in defeating terror organizations or cyber-attackers.
The rise and fall of a Facebook hate group
Authors: Oboler Andre
Published: May 2013

One Facebook group has repeatedly caught the media’s attention. The group is called "Israel" is not a country!... ... Delist it from Facebook as a country! Despite the opinions of experts who highlighted the racist nature of the group, Facebook refused to take action. After unsuccessfully lobbying Facebook for intervention, a organization known as the Jewish Internet Defense Force took control of the Facebook group in late July 2008 and began to manually dismantle it from the inside. The rise and fall of this group highlights open questions on the right response to online hate in user generated content.
Student perceptions of the effectiveness of group and individualized feedback in online courses
Authors: Ice Philip , Kupczynski Lori , Wiesenmayer Randy , Phillips Perry
Published: May 2013

While an abundance of research exists on best practices in the face-to-face classroom, the same is not true for online learning. In this new and constantly evolving environment, researchers are just beginning to understand what constitutes effective learning strategies. One of the most well recognized models for explaining online learning is the Community of Inquiry Framework (CoI). However, despite its recent empirical validation, the CoI provides only general indicators of effectiveness, not guides to specific practices. This study looks at a common practice, providing students with feedback, and assesses whether narrowly targeted, individualized feedback or group feedback is more effective. Through mixed methods research the authors examined student preferences and strategies by student level, finding that while there is no one best solution there are strategies that appear most appropriate for different learner levels. Suggestions for implementing best practices and directions for future research are also discussed.
Ubuntuism, commodification, and the software dialectic
Authors: Chege Mike
Published: May 2013

“Free as in speech, but not free as in beer,” is the refrain made famous by Richard Stallman, the standard-bearer of the free software movement. However, many free software advocates seem to be of the opinion that the purity of free software is somehow tainted by any preoccupation with money or profit. Inevitably, this has implications for the economic sustainability of free software, for without a source of income, how can free software hope to survive? The challenge of finding a way to ensure economic sustainability without sacrificing the ideals of free software is what we have termed the “software dialectic.”

While the literature on the economics of free software is already quite substantial, in this essay we approach the subject by considering first principles, such as the difference between wealth and money, how the market chooses what to produce, and what the laws of thermodynamics have to do with economics. Finally, even though the ideas expressed in this essay apply to free software in general, here we shall be focusing on that particular incarnation of free software known as the GNU/Linux system.
Opening Pandora's box: How technologies of communication and cognition may be shifting towards a 'psycho-civilized society'
Authors: Dennis Kingsley
Published: May 2013

Increasingly there are indications that the uses of wireless technologies have been developed to target an individual's biological body, with specific focus upon the neuronal functioning of the brain. In this paper I examine how some of these uses have had detrimental effects, and what this implies for both present and upcoming developments for particular wireless/sensor technologies. I consider whether this is not shifting dangerously towards a psycho-civilised society, where greater emphasis is placed upon social control and pre-emptive strategies.
Market Ideology and the Myths of Web 2.0
Authors: Scholz Trebor
Published: May 2013

This essay debunks the myths of the Web 2.0 brand and argues that the popularized phrase limits public media discourse and the imagination of a future World Wide Web.
The WIMBA experience: Technology in the Rio Grande Valley
Authors: Reyes Maria Elena
Published: May 2013

Trying to orient undergraduate students into the teaching profession is difficult under any circumstances. After modifying instruction and adding a technology component over a three week period, students appeared more effectively engaged with the course content. The researcher concluded that instructional systems like the one used in this study are assisting instructors in improving student learning, adding another dimension to the classroom experience, and delivering effective instruction. A short overview of the Rio Grande Valley in Texas and the area’s mostly Latino population introduces this study.
Metadata provision and standards development at the Collaborative Digitization Program (CDP): A History
Authors: Cronin Christopher
Published: May 2013

What began in 1998 as the Colorado Digitization Project is now known as the Collaborative Digitization Program (CDP), or CDP@BCR. The CDP’s Heritage West database represents not only the primary product of the organization, but also one of the oldest continuously-operating collaborative repositories of cultural heritage metadata in the country. As a basis for the author’s forthcoming quantitative and qualitative analysis of Dublin Core metadata in Heritage West, the following article offers a history of how the CDP has, over time, organized and managed the metadata provision for its digitization projects.
Second Life: A Virtual World. Why Are Librarians There?
Authors: Frank Ilene
Published: May 2013

Educators and librarians have been exploring Second Life, a 3D virtual world. With more and more users in virtual worlds, educators and librarians need to keep themselves informed about the ways these platforms can be useful. Librarians involved in Second Life are experimenting with services and activities to discover the best way to use virtual worlds. This paper recaps a presentation given a WebWise in Miami, Florida, March 2008.
Obfuscatocracy: A stakeholder analysis of governing documents for virtual worlds
Authors: Grimes Justin M. , Jaeger Paul T. , Fleischmann Kenneth R.
Published: May 2013

Virtual worlds are governed not only by the source code used to develop the world, but also by civil code documents that establish a governance structure that constrains the interactions of users of the virtual world and regulates relationships among stakeholders of the virtual world. While previous research has examined specific aspects of these documents, this paper analyzes these governing documents as a totality. By examining the totality of and the interplay among the governing documents of a number of established social worlds, this paper seeks to discover insights that can prove valuable both for scholarly understanding of social world governance and for the various stakeholders of social worlds. Following this analysis, the paper offers a set of policy recommendations and considerations to facilitate the development of governing documents that more democratically and equally serve the needs and rights of all stakeholders in virtual worlds. The paper concludes that virtual worlds and their governing documents are boundary objects with agency, in that they are the result of interactions among stakeholder groups and in turn reshape the relationships among those stakeholder groups.
Exploring characteristics and effects of user participation in online social Q&A sites
Authors: Shah Chirag , Oh Jung Sun , Oh Sanghee
Published: May 2013

People are seeking more meaningful and customized information than what is obtained by keywords-based queries and document retrieval through a search engine. In this paper, we look at a set of such services, referred to as social Q&A sites. With sites such as Google Answers, and primarily Yahoo! Answers, we attempt to understand various characteristics of user participation and their possible effects on the design and success of the site. We discuss these social Q&A sites by comparing their designs based on user participation and point out the effects and defects of each. We show that active user participation is the core component of these sites. We further analyze rich data collected from more than 55,000 Yahoo! Answers user profiles to understand the nature of user participation, and the quality of this participation. With our analysis we discover that Yahoo! Answers model implicitly encourages users to make an active contribution. An important contribution of the work reported here is the framework with which various factors relating to user participation in social Q&A sites can be studied.