bluuebunny/crossref_metadata_2025 huggingface dataset:
Costello syndrome: Analysis of the posterior cranial fossa in children with posterior fossa crowding
Authors: Calandrelli Rosalinda , D’Apolito Gabriella , Panfili Marco , Zampino Giuseppe , Tartaglione Tommaso , Colosimo Cesare
Published: August 2015

This study aimed to assess changes in the posterior cranial fossa (PCF) to shed light on the mechanism of cerebellar herniation in children with Costello syndrome (CS) and posterior fossa crowding. We performed a morphovolumetric PCF analysis on brain magnetic resonance imaging (MRI) in seven children with CS (mean age 31 ± 16 months) comparing the MRI scans with those of seven age-matched healthy subjects.

PCF volume (PCFV), PCF brain volume (PCFBV) and cerebellar volume (CeV) were assessed on axial T2-weighted MRI. Morphometric parameters (diameters of the foramen magnum, tentorial angle, basiocciput, supraocciput, basisphenoid and exocciput lengths) were measured on sagittal T1-weighted MRI. The volume of the cerebrospinal fluid (CSF) spaces was calculated as PCFV minus PCFBV.

Five out of seven CS children showed tonsillar herniation in the upper cervical canal; no child had hydrocephalus but three out of seven children showed ventriculomegaly. In addition, the PCFV/PCFBV ratio, PCFV, CSF spaces volume, basiocciput, basisphenoid and exocciput lengths and latero-lateral and antero-posterior diameters of the foramen magnum were significantly reduced, whereas no significant changes were found in supraocciput length, PCFBV, CeV or hindbrain volume

The volumetric reduction of the PCF due to bony posterior fossa hypoplasia is a predisposing factor for developing cerebellar tonsillar herniation through the foramen magnum in children with CS. The altered anatomy of the foramen magnum and upward expansion of the PCF secondary to an increased tentorial slope serves to explain the possible mechanism of cerebellar herniation in patients with CS.
Parietal intradiploic encephalocele: Report of a case and review of the literature
Authors: Arevalo-Perez Julio , Millán-Juncos José M
Published: August 2015

Encephaloceles consist of brain tissue and meninges that has herniated through a skull defect, usually located in the midline. They are seen more commonly in children and very rarely in adults. We present a case of an 84-year-old patient who was incidentally diagnosed with a lytic bone lesion in the right parietal intradiploic space, after computed tomography of the head was performed. A magnetic resonance imaging scan of the brain showed herniation of brain tissue through the defect. Magnetic resonance imaging was crucial in demonstrating the presence of parenchyma and its continuity with the rest of the brain, consequently distinguishing it from other entities. We report the imaging findings of a parietal indradiploic encephalocele with its differential diagnosis and a review of the relevant literature.
Does evaluator experience have an impact on the diagnosis of lumbar spine instability in dynamic MRI? Interobserver agreement study
Authors: Patriarca Lucia , Letteriello Mayla , Di Cesare Ernesto , Barile Antonio , Gallucci Massimo , Splendiani Alessandra
Published: August 2015

Objectives

We aimed to evaluate interobserver agreement in the definition of spine instability among spine neuroradiologists with or without experience in dynamic magnetic resonance imaging (MRI).

Material and methods

Two expert neuroradiologists and two residents retrospectively evaluated the pre-operative dynamic MRI examinations of patients with vertebral instability. Segmental motion, defined as excessive (more than 3 mm) translational motion from supine to upright, was investigated in 103 subjects (309 segments) using kinetic MRI. Radiographic parameters which can help indicate segmental instability include disc degeneration, facet joint osteoarthritis, and ligament flavum hypertrophy. These three radiographic parameters were simultaneously evaluated, and the combinations corresponding to significant segmental instability at each level were determined. The agreement among the neuroradiologists was calculated using the kappa coefficient. All patients had neurosurgical intervention to stabilize the spine.

Results

Agreement was high among experienced and non-experienced neuroradiologists. Agreement was nearly perfect for spinal location of spinal instability.

Conclusions

This study demonstrates that the experience of the evaluator has a low impact on the assessment of spinal instability if correct classification is used. The interobserver agreement confirms the usefulness and safety of kinetic MRI in the correct diagnosis of spinal instability even by less experienced evaluators.
Epiglottic masses identified on CT imaging: A case report and review of the broad differential diagnosis
Authors: Tresley Jonathan , Saraf-Lavi Efrat , Kryvenko Oleksandr , Sargi Zoukaa
Published: August 2015

Epiglottic masses may be cystic, granulomatous, infectious, benign or malignant neoplastic, or manifestations of a systemic disease. When large in size, the airway may become obstructed, and when accompanied by suspicious features such as cartilaginous invasion, extension to the pre-epiglottic or para-glottic spaces, or lymphadenopathy, the radiologist must consider malignancy as a primary differential diagnosis. However, when only benign features are identified, the differential diagnosis is broad. We present a 65-year-old female with an incidental 1 cm exophytic, pedunculated, papillomatous lesion on the laryngeal surface of the epiglottis discovered upon endoscopic evaluation for dyspepsia and heartburn. Because of her risk factors for malignancy, CT scan was requested and revealed only benign features. Subsequent excisional biopsy revealed a benign squamous papilloma; however, multiple additional differential considerations were entertained preoperatively.
Perforation of superior thyroid artery by guidewire during carotid artery stenting
Authors: Nomura Motohiro , Mori Kentaro , Seki Shunsuke
Published: August 2015

Background and aim

Although carotid artery stenting (CAS) has become a common treatment for carotid artery stenosis, some complications occur related to the procedures. Perforation of an external carotid artery (ECA) branch is a rare complication.

Case description

An 83-year-old man presented with gait disturbance and dysarthria. MRI demonstrated a fresh cerebral infarction in the watershed territory of the left cerebrum and severe stenosis of the left internal carotid artery (ICA). He underwent CAS for the left ICA stenosis. After the procedure, the patient complained of discomfort of the throat. Swelling of the neck was observed and angiography showed extravasation of contrast medium from the superior thyroid artery. The patient was immediately sedated and intubated. Strict control of the blood pressure was continued. Two days after CAS, the tracheal tube was extracted. He was discharged without deficit on the 17th post-stenting day.

Conclusion

Injury of ECA branches is a potential complication when a guidewire is inserted during advancement of the materials. It may be life threatening due to associated respiratory problems. Once bleeding from the ECA is suspected, close observation of the patient’s neck and respiration and immediate intervention are necessary.
Brain atrophy and physical disability in primary progressive multiple sclerosis: A volumetric study
Authors: Galego Orlando , Gouveia Ana , Batista Sónia , Moura Cristina , Machado Egídio
Published: August 2015

Grey matter atrophy has been shown in primary progressive multiple sclerosis (PPMS), but its association with physical incapacity is unclear. We submitted 19 patients with PPMS to a neurological evaluation and brain magnetic resonance imaging (MRI) with volumetric analysis using FreeSurfer. We found no relation between the Expanded Disability Status Scale or disease duration and the grey matter or white matter structures analysed. Lesion load was negatively correlated with cortical and subcortical grey matter volumes, but not with total white matter volume. We concluded that physical disability in PPMS is not directly related to brain atrophy and that focal inflammatory white matter lesions may contribute to progressive neuronal degeneration.

Long abstract

Introduction: Primary progressive multiple sclerosis (PPMS) is characterized by chronic progression since onset, with predominant involvement of the spinal cord and prominent neurodegeneration. Grey matter atrophy has been shown in patients with PPMS, but its association with clinical incapacity is uncertain. We investigated the relationship between regional brain atrophy and physical disability in patients with PPMS.

Methods

Patients with an established diagnosis of PPMS underwent a neurological evaluation followed by brain MRI at 1.5 T. Volumetric analysis was performed with FreeSurfer software, and evaluated the neocortex, total white matter, total subcortical grey matter, putamen, caudate, globus pallidus, thalamus, hippocampus, brainstem, corpus callosum and pre-central gyrus volumes. Clinical data obtained included physical disability as measured by the Expanded Disability Status Scale (EDSS).

Results

Nineteen patients were included, 14 female (73.7%), mean age of 55.7 (SD 7.6) and mean disease duration of 13.0 years (SD 8.8). Median EDSS score was 6.0 (3.5–8.0). The average T1 lesion load (4.9 cm3, SD 3.4) and T2 load (10.5 cm3, SD 9.9) did not relate to disease duration. There was no significant correlation between EDSS score or disease duration and the cortical grey matter, deep grey matter or white matter structures analysed. Lesion load was negatively correlated with cortical and subcortical grey matter volumes ( p < 0.05), but not with total white matter volume.

Conclusions

Physical disability in PPMS is not directly related to brain volume loss. Grey matter atrophy correlates with lesion load in patients with PPMS, indicating that focal inflammatory white matter lesions may contribute to progressive neuronal degeneration.
The Effect of Assertiveness Training on the Mobbing That Nurses Experience
Authors: Asi Karakaş Sibel , Okanli Ayş e
Published: August 2015

This research was designed to determine the impact of assertiveness training on the mobbing experience of nurses. This study was conducted in two phases. In the first phase, 218 nurses completed the mobbing scale; the education group consisted of 38 nurses who received a score at or above 204 points. A total of 180 nurses were excluded from the education group because they received less than 204 points. The study was conducted with 30 nurses because 8 nurses did not agree to participate in the study. The 30 nurses received the assertiveness training program. Six months after training, the nurses completed the mobbing scale and Rathus Assertiveness Inventory (RAI) again. The assertiveness training positively affected the assertiveness and mobbing scores ( p = .000). After the training, the assertiveness scores increased and the mobbing condition score decreased ( p < .01). Assertiveness training is an effective method for decreasing mobbing. In line with these results, training programs, which support nurses’ personal development by providing counseling and support to nurse victims of mobbing, are recommended.
Does the Game Really Change? How Students Consume Mediated Sports in the Age of Social Media
Authors: Boehmer Jan
Published: August 2015

Social media have been said to rival traditional media in the realm of sports. Actual evidence for a change in consumption patterns, though, remains scarce. This study investigates college students’ use of multiple distribution systems in the context of sports. More specifically, the relative importance of Twitter in relation to television is assessed. In addition, variables potentially predicting a greater reliance on Twitter are analyzed. Results indicate that television remains the primary distribution system for sports and that the importance of Twitter might have been overstated. The use of social media does not diminish the consumption of traditional sports broadcasts but is positively correlated. Finally, results of a regression analysis find that a subset of individuals is more likely to rely on Twitter depending on their tendency to engage in parasocial interactions, their Twitter use patterns, and their perceived expertise in sports.
Physiological and condition-related traits in the gynogenetic-sexual Carassius auratus complex: different investments promoting the coexistence of two reproductive forms?
Authors: Šimková Andrea , Hyršl Pavel , Halačka Karel , Vetešník Lukáš
Published: August 2015

Background

Carassius auratus complexis an extraordinary species complex including the diploid and polyploid forms exhibiting asexual and sexual reproduction modes. The coexistence of both forms in the same habitats is currently reported. The stable coexistence of asexual and sexual forms assumes some disadvantages for asexuals that balance the costs of sex. In our study, we hypothesized and tested the differences in physiological (including heamatological and immunological), growth-related, condition-related, and fitness-related traits between gynogenetic females and sexuals.

Results

Our results revealed similar growth performance in gynogenetic females and sexuals measured by body size and weight, or expressed by condition factor. The energy allocation in reproduction measured by the relative size of gonads revealed no difference between gynogenetic and sexual females; in addition, both females in spawning expressed the same estradiol levels in blood plasma. We found a gender specific trade-off between investment in reproduction and immunocompetence (measured by the spleen-somatic index). Higher aerobic performance expressed by the heart index and higher oxygen-carrying capacity were found in sexual males, with increasing values before and during spawning. Our study evidenced significantly lower aerobic performance but higher oxygen-carrying capacity per erythrocyte in gynogenetic females when compared to sexuals. IgM production differed between gynogens and sexuals ofC. auratuscomplex.

Conclusions

Our study indicates that a similar amount of energy is invested by both gynogenetic and sexual females ofC. auratuscomplex in reproductive behaviour. We suggest that lower aerobic performance in gynogens may represent their physiological disadvantage balancing the cost of sexual reproduction. A trade-off between the number of erythrocytes and the oxygen-carrying capacity per erythrocyte in sexual males and gynogenetic females may contribute to the coexistence of gynogenetic and sexual forms. In addition, the differences in specific immunity between gynogens and sexuals may also reduce the evolutionary disadvantage of sexual reproduction. In conclusion, we propose that several mechanisms contribute to the coexistence of the gynogenetic-sexualC. auratuscomplex.
Wireless indoor network planning for advanced exposure and installation cost minimization
Authors: Liu Ning , Plets David , Vanhecke Kris , Martens Luc , Joseph Wout
Published: August 2015

The possibility of having information access anytime and anywhere has caused a huge increase of the popularity of wireless networks. Requirements of users and owners have been ever-increasing. However, concerns about the potential health impact of exposure to radio frequency (RF) sources have arisen and are getting accounted for in wireless network planning. In addition to adequate coverage and reduced human exposure, the installation cost of the wireless network is also an important criterion in the planning process. In this paper, a hybrid algorithm is used to optimize indoor wireless network planning while satisfying three demands: maximum coverage, minimal full installation cost (cabling, cable gutters, drilling holes, labor, etc.), and minimal human exposure. For the first time, wireless indoor networks are being optimized based on these advanced and realistic conditions. The algorithm is investigated for three scenarios and for different configurations. The impact of different exposure requirements and cost scenarios is assessed.
Bilateral image denoising in the Laplacian subbands
Authors: Jin Bora , You Su Jeong , Cho Nam Ik
Published: August 2015

This paper presents an image denoising algorithm, which applies bilateral filtering (BLF) in the Laplacian subbands. It is noted that the subband images have wider area of photometric similarity than the original, and hence, they can be more benefited by the BLF than the original. Specifically, an image is Gaussian filtered to obtain a low band image, and the low band image is subtracted from the original to have the high band signal, which forms the Laplacian subbands. For the high band image denoising, we derive an adaptive kernel that is dependent on the edge intensity and photometric similarity of subband images. The high band image is convolved with this kernel and then added to the denoised low band signal, which produces the denoised image. We also propose to process the denoised high band signal by the gradient histogram preservation method, for sharpening the edges with less noise amplification. Experimental results show that the proposed denoising method provides higher PSNR than the original BLF and other multi-resolution denoising algorithms. Since the high band image is also effectively denoised in this process, the sharpened image by high band modification is also visually more pleasing when compared with the results of the conventional sharpening methods.
LINKS: Scalable, alignment-free scaffolding of draft genomes with long reads
Authors: Warren René L. , Yang Chen , Vandervalk Benjamin P. , Behsaz Bahar , Lagman Albert , Jones Steven J. M. , Birol Inanç
Published: August 2015

Background

Owing to the complexity of the assembly problem, we do not yet have complete genome sequences. The difficulty in assembling reads into finished genomes is exacerbated by sequence repeats and the inability of short reads to capture sufficient genomic information to resolve those problematic regions. In this regard, established and emerging long read technologies show great promise, but their current associated higher error rates typically require computational base correction and/or additional bioinformatics pre-processing before they can be of value.

Results

We present LINKS, the Long Interval Nucleotide K-mer Scaffolder algorithm, a method that makes use of the sequence properties of nanopore sequence data and other error-containing sequence data, to scaffold high-quality genome assemblies, without the need for read alignment or base correction. Here, we show how the contiguity of an ABySS Escherichia coli K-12 genome assembly can be increased greater than five-fold by the use of beta-released Oxford Nanopore Technologies Ltd. long reads and how LINKS leverages long-range information in Saccharomyces cerevisiae W303 nanopore reads to yield assemblies whose resulting contiguity and correctness are on par with or better than that of competing applications. We also present the re-scaffolding of the colossal white spruce (Picea glauca) draft assembly (PG29, 20 Gbp) and demonstrate how LINKS scales to larger genomes.

Conclusions

This study highlights the present utility of nanopore reads for genome scaffolding in spite of their current limitations, which are expected to diminish as the nanopore sequencing technology advances. We expect LINKS to have broad utility in harnessing the potential of long reads in connecting high-quality sequences of small and large genome assembly drafts.
Genetically based low oxygen affinities of felid hemoglobins: lack of biochemical adaptation to high-altitude hypoxia in the snow leopard
Authors: Janecka Jan E. , Nielsen Simone S. E. , Andersen Sidsel D. , Hoffmann Federico G. , Weber Roy E. , Anderson Trevor , Storz Jay F. , Fago Angela
Published: August 2015

Genetically based modifications of hemoglobin (Hb) function that increase blood–O2 affinity are hallmarks of hypoxia adaptation in vertebrates. Among mammals, felid Hbs are unusual in that they have low intrinsic O2 affinities and reduced sensitivities to the allosteric cofactor 2,3-diphosphoglycerate (DPG). This combination of features compromises the acclimatization capacity of blood–O2 affinity and has led to the hypothesis that felids have a restricted physiological niche breadth relative to other mammals. In seeming defiance of this conjecture, the snow leopard (Panthera uncia) has an extraordinarily broad elevational distribution and occurs at elevations above 6000 m in the Himalayas. Here, we characterized structural and functional variation of big cat Hbs and investigated molecular mechanisms of Hb adaptation and allosteric regulation that may contribute to the extreme hypoxia tolerance of the snow leopard. Experiments revealed that purified Hbs from snow leopard and African lion exhibited equally low O2 affinities and DPG sensitivities. Both properties are primarily attributable to a single amino acid substitution, β2His→Phe, which occurred in the common ancestor of Felidae. Given the low O2 affinity and reduced regulatory capacity of feline Hbs, the extreme hypoxia tolerance of snow leopards must be attributable to compensatory modifications of other steps in the O2-transport pathway.
Company credit policy as a factor in its effective and long-term development
Authors: Ивченко Юлия , Ivchenko Yuliya
Published: August 2015

The scientific and practical publications and regulatory sources for essence credit policy of the firm are analyzed. Based on the analysis it was concluded that there is no unified approach to the content of the term «company credit policy». The credit policy of the firm as a set of principles and methods for management of accounts receivable and the provision of trade credit to buyers; management of payables and bank credits as the main sources of borrowed working capital; management of free cash in the form of giving commercial loans to other companies and opening bank deposits examined.
Reputation and charisma of a leader as cognitive images formed in perception of followers
Authors: Евтихов Олег , Evtikhov Oleg
Published: August 2015

The article deals with the phenomenon of reputation and charisma of organizational leader from the perspective of cognitive psychology. The author analyzes the different scientific ideas concerning the structure of reputation of a leader and the peculiarities of its formation in perception of followers. Leader’s charisma is considered as a cognitive phenomenon. The author describes the essential characteristics (components) the leader’s charisma that increase the leadership potential of organizational and political leaders.
Strategic management of railway line technical capabilities at variable traffic volumes
Authors: Космин Владимир , Kosmin Vladimir
Published: August 2015

The general formulation of the strategic management of the technical condition of railway at random (monotonic — a classic case, and nonmonotonic — a generic case) change in transport is considered. Possible situations and their solutions are showed. The illustrations for common cases, such as monotonically increasing needs in transportation and non-monotonically changing needs in transportation showed.
Management of competitiveness in the market of high school education enforcement services
Authors: Соловьев Тимофей , Solovev Timofey
Published: August 2015

The article discusses approaches to creating institutions of higher education competitive advantages; systematizes the factors affecting the competitiveness of universities in today´s market conditions. The need to form a strategic (long-term) competitiveness of the university management and competitive potential of high school identified.
Business process automation
Authors: Ляндау Юрий , Lyandau YUriy , Стасевич Денис , Stasevich Denis
Published: August 2015

The article deals with the modern approach of integrated automation of business processes based on the developed strategy of information technology, its benefits, results and structure. The authors study the basic integrated applications to automate complex business processes.
Management of social adaptation of disabled employees in modern Russian organizations
Authors: Прошина Анна , Proshina Anna
Published: August 2015

The article presents the results of sociological research the author analyzes the experience of management of social adaptation of employees with disabilities in Russian organizations.
The efficiency of government expenditures policies: use of dummy variables in the regression building of Armey — Rahn curve
Authors: Горидько Нина , Goridko Nina
Published: August 2015

The paper is devoted to the capacities of using dummy variables to construct models that approximate the crisis dynamics of the economic indicators. On the example of Armey — Rahn curve describing the relationship between the GDP growth and the share of government expenditures in GDP, it is proved that the use of dummy variables to indicate the years of crisis provides a meaningful and adequate model if the crisis years have located in the middle of the time series.

Functions constructed for Ukraine and Russia, clearly answer the question of what years could be considered as a crisis, and what ones determine a stagnation. Simulation results confirm the negative impact of the crisis onto economic growth.
Scientific articles from positions of system analysis
Authors: Данилов Александр , Danilov Aleksandr
Published: August 2015

From the standpoint of system analysis and current requirements of Higher Attestation Commission of the Ministry of Education of the Russian Federation to dissertation research, the linear structure of a scientific article in the journal is determined. In fact, the work can be seen as guidelines for authors on the preparation of the articles, including the publications in the scientific journal «Russian Journal of Management» (ISSN 2308-3565).
Development of the control mechanism of reproduction of labor in the realization of development strategy of Russian North and the Arctic
Authors: Поварич Илья , Povarich Ilya , Харченко Алексей , Kharchenko Aleksey
Published: August 2015

The current state of the control mechanism reproduction of the labor force in the Russian North is analyzed. Its compliance with the strategic objectives of development of the northern territories of Russia is determined. The key problems of the existing mechanism of management and direction of its development in the conditions of implementation of strategies for the development of the Russian North and the Arctic are identified.
Institutional vector of national corporate governance model development
Authors: Причина Дарья , Prichina Darya , Панфилова Елена , Panfilova Elena
Published: August 2015

The main vectors of development of the national model of corporate governance are considered. Its institutional features are determined. The specifics of the agency problem resolution coordinates “principal — agent” activity and structure of the board of directors of Russian companies are studied. Features of non-financial reporting and corporate transparency companies are disclosed as well as the basic contradiction of the formation and development of the Russian model of corporate governance is determined.
Using the gaming simulation technology to overcome the mental problems in a developing lean production
Authors: Кондратьев Эдуард , Kondratev Eduard , Гудз Николай , Gudz Nikolay
Published: August 2015

The article describes the experience of lean manufacturing by involving staff in the process of change by playing technique. An important condition for the transition of the production system to the lean principles is to prevent excessive instrumentalism, which can lead to demotivation of people and return the changes back.
Contemporary dynamics of a labour market in Russia and barriers for innovative enhancement
Authors: Нижегородцев Роберт , Nizhegorodtsev Robert
Published: August 2015

The paper discusses the level of coincidence between objectives of innovative enhancement for Russian economy and contemporary state of a labour market. It proves there are two crucial barriers for innovative enhancement — a low price of labour and closeness of a skilled labour market for employees from abroad. Some conclusions about the barest necessity to increase a labour price in order to eliminate a number of barriers for stable growth of Russian economy are drawn.
Factor analysis of the level of manageability of the organization
Authors: Рыбалкина Зарина , Rybalkina Zarina , Куликов Вячеслав , Kulikov Vyachyeslav
Published: August 2015

The factors that according to the authors contribute to manageability, determined using econometric methods. Through the analysis performed by the example of 59 organizations, the conclusion as to which of them is a priority for organizations manageability is given.
About the Tasks of Descriptive Geometry With Imaginary Solutions
Authors: Иванов  , Ivanov G. , Дмитриева  , Dmitrieva I.
Published: August 2015

The article is devoted to the discussion of the scientific

methodological problems of presentation tasks of descriptive

geometry along with having real and imaginary solutions. Examples

of such problems are given, graphics solutions who give the wrong answers. As a consequence they resulted in some the textbooks on

descriptive geometry to the emergence false claims type “ the curve

degenerates to a point”, “a torus is a surface of the second order”,

“conical and cylindrical surfaces are a special cases of the torsoboy

surface in the case of degeneration of the ribs return torsoboy the

surface at the point, etc.”

In the article gives a correct mathematical interpretation of

imaginary solutions the tasks by considering of examples an the

determine the order and class of plane algebraic curve, the isolated

point touch, of the line of intersection of surfaces of the second

order with a common plane of symmetry. To obtain a mathematically

valid answers the conclusion about the need for a combination

of graphical and analytical solutions. This approach meets the

requirements of the GEF on ensure as intrasubject discussed in this

publication, and so interdisciplinary competencies. The latter have

a broad outlet of descriptive geometry in complex space in the

theory of algebraic curves and surfaces, kremenovic transformations,

field theory, etc.
Mechanisms of development of administrative potential
Authors: Рыбалкина Зарина , Rybalkina Zarina
Published: August 2015

Competition strengthening between the enterprises increases

the importance of development of administrative potential.

Development of administrative potential is the most important reserve

of increase of efficiency of activity of the enterprise. In article

mechanisms of development of the administrative potential, allowing

to introduce achievements of science in practice of administrative

activity are offered.
Collusion in Dynamic Buyer-Determined Reverse Auctions
Authors: Fugger Nicolas , Katok Elena , Wambach Achim
Published: August 2015

Although binding reverse auctions have attracted a good deal of interest in the academic literature, in practice, dynamic nonbinding reverse auctions are the norm in procurement. In those, suppliers submit price quotes and can respond to quotes of their competitors during a live auction event. However, the lowest quote does not necessarily determine the winner. The buyer decides after the contest, taking further supplier information into account, on who will be awarded the contract. We show, both theoretically and empirically, that this bidding format enables suppliers to collude, thus leading to noncompetitive prices.

This paper was accepted by Teck-Hua Ho, behavioral economics.
Exhibition Review
Authors: Tseëlon Efrat
Published: August 2015

‘Strikking’/‘Knitting History’: Permanent exhibition, Norsk Folkemuseum/folk museum, Oslo, Norway
Eccentricity in Order to Re-centre: La Maison Rouge
Authors: Bal Mieke
Published: August 2015

In the ten years of its existence, La Maison Rouge has been an influential venue in the Paris art world. Besides monographic shows, it has organized innovative exhibitions through three different pathways: internationalization, the inclusion of ‘art brut’ and other materials made by or representing psychiatric patients, and the presentation of private collections. These exhibitions were all curated carefully on the basis of thoughtful principles. Paradoxically, the institution’s anniversary exhibition Le mur seemed to undermine the very idea of curating by consigning the selection and arrangement of artworks to a computer. This article seeks to understand the paradox this curatorial methodology raises, and posits that eccentricity can be construed as a meaningful basis for constructing exhibitions.
Exhibition Reviews
Authors: Frascina Francis , Barbu Adam , Lehtinen Heini , Pecorari Marco , Springgay Stephanie , Suslau Dzmitry
Published: August 2015

LOVE IS ENOUGH: WILLIAM MORRIS & ANDY WARHOL Curated by Jeremy Deller, Modern Art Oxford, 6 December 2014 – 8 March 2015

CHRISTIAN BOLTANSKI, ALMAS Curated by Beatriz Bustos, Museo Nacional de Bellas Artes, Santiago, Chile, 30 October 2014 – 4 January 2015

BIO 50 – 24TH BIENNIAL OF DESIGN LJUBLJANA Curated by Jan Boelen, Maja Vardjan and Cvetka Požar, Museum of Architecture and Design, Museum of Modern Art, and eighteen other locations, Ljubljana, 18 September – 7 December 2014

OLIVIER SAILLARD AND TILDA SWINTON, THE CLOAKROOM – VESTIAIRE OBLIGATOIRE Musée de la Mode de Paris Galliera, Paris, 22–29 November 2014

CENTRE FOR INCIDENTAL ACTIVISMS (CIA) #2 Orchestrated by Emelie Chhangur, Suzanne Carte, Michael Maranda and Allyson Adley, and co-organized with Maggie Flynn, Ame Henderson, Jp King and Terrarea, Art Gallery of York University, Toronto, 6 January – 2 March 2014

FISCHLI/WEISS, ROCK ON TOP OF ANOTHER ROCK Curated by Hans-Ulrich Obrist and Julia Peyton-Jones, Serpentine Galleries, London, 7 March 2013 – 30 September 2014
Conference Review
Authors: Strüngmann Agustina
Published: August 2015

CURATING: GLITTERING MYTH, SOCIAL SYMPTOM, REVOLUTIONARY FORCE? A CONFERENCE ON CURATORIAL KNOWLEDGE PRODUCTION Organized by Dorothee Richter and the Research Platform for Curatorial and Cross-disciplinary Cultural Studies, Practice-Based Doctoral Programme, University of Reading in cooperation with the Postgraduate Programme in Curating, Institute for Cultural Studies in the Arts, Zurich University of the Arts. Held at Zurich University of the Arts, 15 November 2014.
TandemHeart as a Bridge to Recovery in Legionella Myocarditis
Authors: Briceño David F. , Fernando Rajeev R. , Nathan Sriram , Loyalka Pranav , Kar Biswajit , Gregoric Igor D.
Published: August 2015

Legionnaires' disease is the designation for pneumonia caused by the Legionella species. Among the rare extrapulmonary manifestations, cardiac involvement is most prevalent, in the forms of myocarditis, pericarditis, postcardiotomy syndrome, and prosthetic valve endocarditis. Mechanical circulatory support has proved to be a safe and effective bridge to myocardial recovery in patients with acute fulminant myocarditis; however, to our knowledge, this support has not been used in infectious myocarditis specifically related to Legionellosis.

We describe a case of Legionella myocarditis associated with acute left ventricular dysfunction and repolarization abnormalities in a 48-year-old man. The patient fully recovered after left ventricular unloading with use of a TandemHeart percutaneous ventricular assist device. In addition, we review the English-language medical literature on Legionella myocarditis and focus on cardiac outcomes.
Direct Percutaneous Repair of Left Ventricular Pseudoaneurysm via Transthoracic Deployment of a Ventricular Septal Defect Closure Device
Authors: Moriarty John , Harris Tyler J. , Vorobiof Gabriel , Kwon Murray , Aboulhosn Jamil
Published: August 2015

In this case report, we describe direct percutaneous delivery of a muscular-ventricular-septal-defect occluder device to close a left ventricular pseudoaneurysm. The occluder was positioned and deployed with the aid of concurrent transthoracic ultrasonography, transesophageal echocardiography, and fluoroscopy. In contrast with previously published reports, we describe and illustrate a direct transthoracic route across the pseudoaneurysmal sac, which obviated the need for indirect transfemoral or transapical approaches.
Ultrasound Biomicroscopic Imaging for Interleukin-1 Receptor Antagonist–Inhibiting Atherosclerosis and Markers of Inflammation in Atherosclerotic Development in Apolipoprotein-E Knockout Mice
Authors: Li Rong-Juan , Sun Yan , Wang Qin , Yang Jiao , Yang Ya , Song Li , Wang Zheng , Luo Xiang-Hong , Su Rui-Juan
Published: August 2015

We sought to validate the hypothesis that the development of atherosclerosis can be suppressed by the interleukin-1 receptor antagonist (IL-1Ra) in murine models of atherosclerosis in vivo, noninvasively seen by means of high-resolution ultrasound biomicroscopy, and we studied changes in inflammatory markers such as IL-1 and C-reactive protein (CRP) plasma levels in these models of atherosclerosis.

We divided IL-1Ra+/−/apolipoprotein-E (apoE)−/− and IL-1Ra+/+/apoE−/− mice into 2 age groups, used as atherosclerotic models. The control groups were age-matched IL-1Ra+/+/apoE+/+ mice. Plaque thickness was measured in the ascending aorta in short-axis images by means of ultrasound and histology. Plasma levels of IL-1 and CRP were quantified in the 3 murine groups.

At 16 weeks, plaque thickness in the ascending aortas of the IL-1Ra+/−/apoE−/− mice was significantly greater than that in the IL-1Ra+/+/apoE−/− mice, on ultrasound and histology (P <0.01). In contrast, at 32 weeks, the differences between these 2 genotypes were not statistically significant. Serum IL-1 levels were lower in the IL-1Ra+/−/apoE−/− mice than in the IL-1Ra+/+/apoE−/− mice at 16 and 32 weeks (P <0.05). At 16 weeks, serum CRP levels in the IL-1Ra+/−/apoE−/− mice were higher than in the IL-1Ra+/+/apoE−/− mice (P <0.01).

Our results suggest that ultrasound biomicroscopy enables evaluation of atherosclerotic lesions in vivo, noninvasively and in real-time, in apoE−/− mice. Partial IL-1Ra deficiencies might promote early plaque development in 16-week-old apoE−/− mice. The balance of IL-1 and IL-1Ra might influence atherosclerotic development. Finally, CRP might affect the initiation of atherosclerosis, rather than its progression.
Use of a Vascular Sheath in the Axillary Artery as an Alternative Access Approach for Placing an Impella 5.0 Device
Authors: Shah Ankur S. , Lee Richard , Hui Dawn S. , Lim Michael J. , Neumayr Robert H. , Stolker Joshua M.
Published: August 2015

Many patients who are in cardiogenic shock need mechanical support for clinical stabilization after acute insults such as myocardial infarction. However, the placement of advanced devices can be hindered by anatomic constraints or the physiologic sequelae of shock, as we describe in this report.

A 67-year-old woman with prior coronary artery bypass grafting and extensive chest-wall scarring from previous defibrillator implantations presented with myocardial infarction and refractory cardiogenic shock. The patient's vascular anatomy and prior surgery precluded conventional percutaneous implantation of an Impella 5.0 ventricular support device. We delivered the Impella device through the patient's tortuous, vasoconstricted axillary artery with use of a vascular sheath and other percutaneous techniques. The success of this approach suggests that combining the expertise of cardiologists and cardiovascular surgeons can improve the outcomes of patients with complex anatomic issues.
Plasma Exchange for Urgent Apixaban Reversal in a Case of Hemorrhagic Tamponade after Pacemaker Implantation
Authors: Lam Wilson W. , Reyes Meredith A. , Seger John J.
Published: August 2015

We report the case of an 82-year-old man in whom hemorrhagic pericardial effusion occurred one week after pacemaker implantation, while he was taking apixaban. Few therapies exist for reversing the anti-Xa effect of apixaban. To reverse anticoagulation, our patient underwent plasma exchange, which facilitated pericardiocentesis and prevented possible surgical intervention. To our knowledge, this is the first report of the use of plasmapheresis to reverse the anticoagulant effect of apixaban.
ANALISA PEMANFAATAN KOMPOS SEBAGAI MEDIA BIOCOVER DI TEMPAT PEMROSESAN AKHIR SAMPAH: Studi Kasus Kota Depok, Jawa Barat
Authors: Kristanto Gabriel Andari , Rahayu Dwi , Novita Evy
Published: August 2015

High percentage of organic waste in urban areas makes composting as good alternative in waste processing. However, composting has not been effectively used and the result is not optimal. Previous studies found compost can be used as biocover media to reduce methane emission landfill. The objective of the study is to identify the characteristic of produced at temporary waste unit Depok, West Java and the effect of compaction toward the amount of methane removal in the landfill. Before applied as biocover media, compost was characterized followed by maturation process. Study on methane removal efficiency was conducted as batches in four reactors for 35 days with compaction rate varying from 750, 800, 850 dan 900 kg/m3. Composting media used in the research had 80 cm thickness with artificial gas consisting of 50% CH4 dan 50% CO2. Initially, compost did not meet criteria as mature compost based on SNI 19-7030-2004, and as media biocover hence a pre-treatment was needed to improve the quality compost to meet the requirements. Compaction rate of 900 kg/m3has highest elimination capacity of methane i.e. 98,31%±3,6% and 13,98±4,32 g/m3/hour.
SIFAT POLIMER DAN KEMAMPUAN TERBIODEGRADASI BLEND BIODEGRADABLE POLYMER POLI (L-ASAM LAKTAT) (PLLA)
Authors: Sitompul Johnner P , Insyani Rizki , Woo Lee Hyung
Published: August 2015

Poly(D,L-lactic acid) (PDLLA) and poly(ethylene glycol) (PEG) was used to modify mechanical and biodegradability properties of poly(L-lactic acid) (PLLA) through solution blending method using solvent mixture of dichloromethane-ethanol. Polymer samples were then characterized using FTIR, DSC, UTM, and enzymatic degradation test. FTIR spectrum of pure PLLA showed specific IR absorption peaks at wavenumber of 3504 cm-1 (-OH), 1757 cm-1 (-C=O), and 1381 cm-1 (-CH3 symmetric). Further, polymer blend samples showed absorption peak shifts at 1755 cm-1 and 1382 cm-1 for PLLA/PDLLA due to stereocomplex interaction and at 3429 cm-1 due to hydrogen bond interaction. DSC results showed that there was melting temperature depression for all polymer blend samples compared to pure PLLA with increasing of either PDLLA or PEG composition. In PLLA/PDLLA, two melting points were discovered because of homocrystallite and stereocomplex phase formation. While PLLA/PEG samples showed increasing crystallinity to 69% at 20%-wt PEG composition. Mechanical analysis showed that 10%-wt of PDLLA addition in PLLA produced better mechanical performance than pure PLLA while 20%-wt of PEG addition showed highest elongation at break with the value of 89%. Polymer blend samples were degradable during enzymatic degradation test represented by percent weight loss with maximum value of 21% for PLLA/PEG sample. Keywords: polymer properties, solution-blending, Poly(lactic acid), polymer blend, enzymatic degradation
Turf and Illegal Drug Market Competition between Gangs
Authors: Naranjo Alberto J.
Published: August 2015

Street-level illegal drug markets generate much of the violence and intimidation that local communities face nowadays. These markets are mainly driven by territorial gangs who finance their activities through the sale of drugs. Understanding how the existence of both turf and drug market competition may have unintended consequences of law enforcement policies on violence is the main contribution of the paper. We propose a two-stage game-theoretical model where two profit maximizing gangs compete in prices and invest in guns. We find that policies such as traditional or community policing can have different and unexpected effects on the level of violence.
Primary standards for measuring flow rates from 100 nl/min to 1 ml/min – gravimetric principle
Authors: Bissig Hugo , Petter Harm Tido , Lucas Peter , Batista Elsa , Filipe Eduarda , Almeida Nelson , Ribeiro Luis Filipe , Gala João , Martins Rui , Savanier Benoit , Ogheard Florestan , Niemann Anders Koustrup , Lötters Joost , Sparreboom Wouter
Published: August 2015

Microflow and nanoflow rate calibrations are important in several applications such as liquid chromatography, (scaled-down) process technology, and special health-care applications. However, traceability in the microflow and nanoflow range does not go below 16 μl/min in Europe. Furthermore, the European metrology organization EURAMET did not yet validate this traceability by means of an intercomparison between different National Metrology Institutes (NMIs). The NMIs METAS, Centre Technique des Industries Aérauliques et Thermiques, IPQ, Danish Technological Institute, and VSL have therefore developed and validated primary standards to cover the flow rate range from 0.1 μl/min to at least 1 ml/min. In this article, we describe the different designs and methods of the primary standards of the gravimetric principle and the results obtained at the intercomparison for the upper flow rate range for the various NMIs and Bronkhorst High-Tech, the manufacturer of the transfer standards used.
Basic nutrition knowledge of recent medical graduates entering a pediatric residency program
Authors: Castillo Marigold , Feinstein Ronald , Tsang James , Fisher Martin
Published: August 2015

Objective:

This study assesses the basic nutritional knowledge of fourth year medical/osteopathic school graduates entering a pediatric residency program and compares the knowledge of the medical students to that of the patients and parents who completed the same survey previously.

Methods:

Medical and osteopathic school graduates entering a pediatric residency program completed an 18-question nutrition survey during resident orientation in June of 2011 and 2012.

Results:

The incoming interns averaged answering 52% of the questions correctly. Interns did better than both groups but the only statistically significant difference was between the interns and the non-eating disorder adolescents and their parents (p<0.001).

Conclusion:

Incoming residents to a pediatric residency program appear to be deficient in basic nutritional knowledge. With the ever increasing burden of obesity and its associated co-morbidities on society, it is imperative that medical education focuses on preparing physicians to appropriately counsel all populations on proper nutrition.
Language conflict research: a state of the art
Authors: Darquennes Jeroen
Published: August 2015

After a broad overview of the history and the areas of focus of research on language conflict, this article pays particular attention to a number of selected features of societal language conflict. A discussion of the causes, the visibility, the manifestations, the discursive focal points, the management and the outcomes of the management of societal language conflict precedes a sketch of methodological approaches in language conflict research. The snapshot of language conflict research ends with a list of research desiderata.