bluuebunny/crossref_metadata_2025 huggingface dataset:
Impact of early versus late enteral nutrition on cell mediated immunity and its relationship with glucagon like peptide-1 in intensive care unit patients: a prospective study
Authors: Bakiner Okan , Bozkirli Emre , Giray Semih , Arlier Zulfikar , Kozanoglu Ilknur , Sezgin Nurzen , Sariturk Cagla , Ertorer Eda
Published: June 2013

Introduction

Glucagon-like peptide-1 (GLP-1) originates from the gastrointestinal system in response to the presence of nutrition in the intestinal lumen and potentiates postprandial insulin secretion. Also, it acts as an immune-modulator which has influences on cell-mediated immunity.

The aim of this study was to determine the impact of early enteral nutrition versus late enteral nutrition on plasma GLP-1 levels and the relationship between GLP-1 changes and cell-mediated immunity.

Materials and methods

The study was designed as a prospective, single-blinded study and carried out in the neurology intensive care unit (ICU) of a university hospital. Twenty-four naive patients with acute thromboembolic cerebrovascular events, with National Institute of Health (NIH) stroke scores between 12 and 16, were included. Any condition interfering with GLP-1 and immunity was regarded as exclusion criterion. Two patients died, and two dropped out of the study due to complicating conditions.

Patients were randomly subjected to early enteral feeding within the first 24 hours (Group 1), or late enteral feeding, beginning 48 hours after admission (Group 2) via a nasogastric tube. Calculated daily energy requirement was supplemented with parenteral nutrition, starting on the first study day for both groups. Blood samples were obtained before, and at 5, 15, 30, 60 and 120 minutes after the first enteral feeding for GLP-1 assays; this procedure was repeated on the third day. Before and 24 hours after the first enteral feeding, samples were also taken for immunological analysis. Clinical observations were recorded.

Pre- and post-feeding plasma GLP-1 changes between the two groups and within groups were evaluated. Lymphocyte subgroup changes before and 24 hours after the first enteral feeding in relation to GLP-1 changes were sought as well.

Results

Group 1 and Group 2 exhibited similar GLP-1 levels in the pre-feeding and post-feeding periods for both the first time and the third day of enteral feeding. Also, no significant change in pre-/post-feeding GLP-1 levels was observed within groups. T-helper and T-regulatory cells increased, T-cytotoxic cells decreased significantly in Group 1 (P = 0.02; P = 0.036; P = 0.0019), but remained the same in Group 2 after enteral feeding. Positive but statistically insignificant clinical effects in terms of predisposition to infections (10% vs 40%) and median time of ICU stay (10 vs 15 days) were observed in Group 1.

Conclusions

Depending on our findings, we propose that early enteral feeding may cause amelioration in cell-mediated immunity via factors other than GLP-1 in ICU patients with acute thromboembolic stroke. However, the possible deleterious effects of parenteral nutrition cannot be ruled out.
Kirchhoff migration using eikonal-based computation of traveltime source derivatives
Authors: Li Siwei , Fomel Sergey
Published: June 2013

The computational efficiency of Kirchhoff-type migration can be enhanced by using accurate traveltime interpolation algorithms. We addressed the problem of interpolating between a sparse source sampling by using the derivative of traveltime with respect to the source location. We adopted a first-order partial differential equation that originates from differentiating the eikonal equation to compute the traveltime source derivatives efficiently and conveniently. Unlike methods that rely on finite-difference estimations, the accuracy of the eikonal-based derivative did not depend on input source sampling. For smooth velocity models, the first-order traveltime source derivatives enabled a cubic Hermite traveltime interpolation that took into consideration the curvatures of local wavefronts and can be straightforwardly incorporated into Kirchhoff antialiasing schemes. We provided an implementation of the proposed method to first-arrival traveltimes by modifying the fast-marching eikonal solver. Several simple synthetic models and a semirecursive Kirchhoff migration of the Marmousi model demonstrated the applicability of the proposed method.
On the Number of Turns in Reduced Random Lattice Paths
Authors: Jiang Yunjiang , Xu Weijun
Published: June 2013

We consider the tree-reduced path of a symmetric random walk on ℤd. It is interesting to ask about the number of turns Tn in the reduced path after n steps. This question arises from inverting the signatures of lattice paths: Tn gives an upper bound of the number of terms in the signature needed to reconstruct a ‘random’ lattice path with n steps. We show that, when n is large, the mean and variance of Tn in the asymptotic expansion have the same order as n, while the lower-order terms are O(1). We also obtain limit theorems for Tn, including the large deviations principle, central limit theorem, and invariance principle. Similar techniques apply to other finite patterns in a lattice path.
Designing writing/designing reading: Textual ontologies and poetic practice
Authors: Hall Sean
Published: June 2013

Standardized writing and reading practices in academia are well established. The academic book, article, dissertation and the report are all familiar in terms of both form and content. But due to the various forms of standardization it is often hard to challenge the Mandarin diseases of ‘group’ thought and instruction that Universities breed in imposing their own strict writing and reading protocols and forms of pedagogy. (Alongside these things sit all the evaluative forms and kinds of assessment machinery that go with the practice of trying to count and measure everything that academics or students produce.) So if we need to consider new ways to design writing and reading we should think more about the way in which we actually live with text, both virtually and actually. In order to present new semantic challenges for new writers and readers, then, we need might need to look at the ways that other practitioners from different fields and disciplines use and create (and curate) writing and reading – where ‘con’ (with) combines with ‘textere’ (weave/text) so that the text is woven with new meanings. In what follows, then, I will consider how a poetics of textual practice may start to encourage students to engage with richer, and more carefully designed, forms of meaning. More specifically, I wish to draw on various tasks that can be set to encourage student designers to put more meaning into their writing by making challenges to form. The production of writing and reading can be considered as integral to the research and ideational processes of design work. And so how graphic design can engender, unfold and fuse with other creative practices such as poetry may be important in enabling new textual rhythms, harmonies and melodies to develop in the subject of design.
Critical thinking as an embodied criticality: The lived experiences of international art students
Authors: Riley-Jones Gary
Published: June 2013

Using an adapted narrative enquiry approach, the purpose of the research is to present a model of criticality based on R. Barnett’s argument that criticality should ‘create epistemological and ontological disturbance in the minds and in the being of students’, which Barnett argues is a prerequisite to critical being, or in I. Rogoff’s terms, a ‘critical embodiment’. Inevitably, such a conceptualization involves a reformation of the student’s subject position including their sense of identity and it is clear that despite the ‘messy’ data provided by these unstructured narrative interviews with two international fine art students, there is evidence for Barnett’s and Rogoff’s positions. Indeed, identity is central to the practice of both participants who articulate their sense of othering in Foucauldian terms, operating at a very cognitive level within a western regime of truth.
Repeat orienteering
Authors: Upton Lawrence
Published: June 2013

An intermedia approach to writing is proposed in which the writing processes are seen as forms of inscription of media enabling the writer to learn from and adapt techniques from, for example, music and graphic art. Collaboration is proposed as a productive way of extending and expanding the writer’s skills. The centrality of writing as a means of instruction is questioned to propose the potential meaningfulness of even the asemic collocation.
Technological augmented narratives in public transportation
Authors: Ashkenazi Avi
Published: June 2013

This article stems from a brief about narrative and technology assigned during my M.A. Design Critical Practice at Goldsmiths, University of London. The project that developed from the brief was a group project, so when I say ‘we’ I mean my group: Blair Francy, Marion Lean and Jullian Lee. Our goal was to find new ways of telling narratives. These ways should carry in them the ability to create a better experience of story: engaging, revolving and natural. This article suggests new design concepts for the transportation system derived from a combination of creative writing methods, technology development processes, acting techniques (bodystorming) and design methodology.
The camera and the collecting gene
Authors: Rozental Rotem
Published: June 2013

The merging of the positions of photographer and collector defines the drive of a certain kind of photographic work, for which the camera becomes a collecting device, accumulating a collection that speaks the subjectivity of its author – the photographer. There are, however, two impulses at work here: the photographer-as-collector and the collector-as-photographer. Both are present in the work of Martin Parr, who has openly admitted that he has ‘the collecting gene’, but also, somewhat earlier, in the work of Walker Evans whose obsession with collectibles and whose mode of photographic collecting provide a striking historical precedent for Parr’s compulsive practice. My article explores the collecting impulse that motivates these photographers and, more particularly, shapes a new mode of making photographs and cataloguing social life that seem to escape established genre categories, including especially the category of documentary.
Reviews
Authors: O’Sullivan Simon , Wikström Josefine , Paul Richard
Published: June 2013

A Portrait of the Philosopher as an Old Man

Gilles Deleuze from A to Z, Gilles Deleuze (2011)
Gilles Deleuze in interview with Claire Parnet, Semiotext(e), New York, DVD set, Dir., Pierre-Andre Boutang, French with English subtitles trans., Charles J. Stivale, run time 453 minutes, ISBN: 1584351012, £23.72

Plug out

Face Value: An Essay on the Politics of Photography, Nathaniel Cunningham (2012) 1st ed., New York: Workingroup, 116 pp., ISBN: 978-0-615-69902-8, p/bk, $10.00.

Hide and Seek: Camouflage, Photography and the Media of Reconnaissance (2012) Hannah Rose Shell: Zone Books, New York, £22.95 hb, ISBN: 9781935408222, pp, 240.
Messunsicherheit primärer Auswahlsysteme zur Schwingungskalibrierung
Authors: Bühn Uwe , Begoff Philipp , Nicklich Holger
Published: June 2013

Primärsysteme zur Schwingungskalibrierung sind gekennzeichnet durch eine interferometrische Messung der Schwingungsgröße. In der Standard-Ausführung haben sie bereits eine recht geringe Messunsicherheit. Definiert man ein so genanntes Auswahlsystem mit fester Zuordnung aller Komponenten und ermittelt dafür die dominierenden Einflussfaktoren, dann erzielt man noch geringere Messunsicherheiten. Ist ein Auswahlsystem für den Einsatz in einem NMI vorgesehen, so entfällt die Rückführung auf das nationale Normal, und es werden Bestwerte für die Messunsicherheit erzielt.
Modeling the influence of tile drainage flow and tile spacing on phosphorus losses from two agricultural fields in southern Québec
Authors: Morrison J. , Madramootoo C. A. , Chikhaoui M.
Published: June 2013

Tile drainage is a widely adopted water management practice in the eastern Canadian provinces of Québec and Ontario. It aims to improve the productivity of poorly drained agricultural fields. Nevertheless, studies have also shown that subsurface drainage is a significant pollution pathway to surface water. This study was undertaken to evaluate the effect of tile drain spacing on surface runoff, subsurface drainage flows, and phosphorus (P) loss from two tile-drained agricultural fields located near Bedford, Québec. Field data were used with the DRAINMOD model, and in developed regression models in order to perform the analysis. Both DRAINMOD and the regression models showed good performance. Simulation results indicated that when lateral tile drain spacing is increased, the volume of subsurface drain flow decreases, and the volume of surface runoff increases, at sites with sandy and clay loam soils. For every 5 m increase in drain spacing, total phosphorus (TP) loads in subsurface drainage decreased by 6% at a site with sandy loam soil, and increased by 20% at a site with clay loam soil. TP loads in surface runoff increased as a result of increased drain spacing.
Editorial
Authors: Ashley Kevin
Published: June 2013

Kevin Ashley, Chief Editor, introduces Volume 8, Issue 1 (2013) of the International Journal of Digital Curation.
Data Intelligence Training for Library Staff
Authors: De Smaele Madeleine , Verbakel Ellen , Potters Nicole , Noordegraaf Marina
Published: June 2013

The Data Intelligence 4 Librarians course was developed by 3TU.Datacentrum at the end of 2011 to provide online resources and training for digital preservation practitioners, specifically for library staff. The course objectives are to transfer and exchange knowledge about data management, and to provide participants with the skills required to advise researchers or research groups on efficient and effective ways of adding value to their data. The paper describes the process of creating the course, the methodology and the results of the first pilot, which took place from February to June 2012. It also demonstrates the choices made during the design process and discusses the implications of the evaluation of the pilot course for further development: in particular, how the course might be expanded to more disciplines and other data repositories.
Impact of bovine leukemia virus infection on neutrophil and lymphocyte concentrations in dairy cattle
Authors: Swenson Cheryl L. , Erskine Ronald J. , Bartlett Paul C.
Published: June 2013

Objective—To determine the effect of bovine leukemia virus (BLV) infection on absolute neutrophil and lymphocyte concentrations in healthy lactating Holstein dairy cattle.

Design—Observational cross-sectional survey.

Animals—311 healthy lactating Holstein dairy cattle from herds in Michigan (n = 2), Wisconsin (1), Iowa (1), and Pennsylvania (1).

Procedures—Whole and anticoagulated (EDTA) blood samples were collected. Serum samples were tested for antibody against BLV by use of an ELISA. Absolute neutrophil and lymphocyte concentrations were measured in EDTA blood samples with an automated hematology analyzer and manual differential cell counts.

Results—208 cows tested positive and 103 cows tested negative for anti-BLV antibodies. Neutrophil concentration was not significantly different between BLV-positive versus BLV-negative cattle. The distribution of lymphocyte concentration was positively skewed for the entire cow population (n = 311) and the BLV-positive subset (208). In contrast, lymphocyte concentration distribution was approximately normal for BLV-negative cows (n = 103). Consequently, the presence or absence of BLV infection strongly influenced the calculated neutrophil-to-lymphocyte concentration ratio.

Conclusions and Clinical Relevance—Results indicated that absolute lymphocyte concentration is significantly affected by BLV infection in dairy cattle. Accordingly, hematologic reference intervals should be derived from healthy animals that are not infected with BLV and patient BLV status must be considered for meaningful interpretation of lymphocyte concentration. We recommend that the calculated neutrophil-to-lymphocyte ratio be abandoned because it does not provide more information than direct comparison of patient absolute leukocyte concentration with updated reference intervals from healthy BLV-negative cattle.
Equilibrium and kinetic studies of Cr (VI) removal from synthetic wastewater by Acroptilon repense flower powder
Authors: Ghaneian Mohammad Taghi , Ehrampoush Mohammad Hasan , Arany Asghar Mosleh , Jamshidi Behzad , Dehvari Mahboobeh
Published: June 2013

In this study the removal of Cr (VI) from synthetic wastewater was investigated using Acroptilon repens (Russian Knapweed) flower powder under various conditions (pH, contact time and initial concentration of Cr). The capacity of chromium adsorption at equilibrium conditions by this biosorbent was increased by adsorbate concentration. The results also showed that the removal efficiency of Cr (VI) was increased by increasing the contact time. By increasing the initial concentration of Cr (VI) solution, chromium removal was reduced. The suitability of adsorbents and their constants was tested or evaluated with the Langmuir, Freundlich and Temkin isotherms models. The results indicated that the Freundlich and Langmuir models (R2 > 0.99) gave a better concordance to the adsorption data in comparison with the Temkin equation (R2 = 0.97). The adsorption of Cr (VI) followed the pseudo-second-order kinetics (R2 = 0.991). The study showed that Acroptilon repens flower powder can be used as an effective lignocellulosic biomaterial and biosorbent for the removal of Cr (VI) from wastewater.
Two years' observational study of racial difference of breast cancer in patients presenting to a tertiary care hospital serving indigent population
Authors: Devkota Bishnu P , Armbrecht E
Published: June 2013

Background: Breast cancer is the most common malignancy after non-melanoma skin cancers and second highest cause of cancer deaths (after lung cancer) in females. Objective: To assess racial difference of breast cancer in patients presenting to a tertiary care hospital serving indigent population. Methods: Medical records of 119 Caucasians and 146 African American women with pathologically proven breast cancer who were admitted in a tertiary care hospital serving the indigent population from January 2004 to December 2006 were reviewed retrospectively. Analysis of Variance was performed for within and between group differences using SPSS 19. Results: Our study showed that mean age of cancer diagnosis was much earlier (47.6 years) in white women whose second degree relatives have breast cancer than those women whose first degree relatives have breast cancer (58.6 years). However, in the black women this differencewas not observed (p value for white is 0.002 but for black it was 0 .94). Conclusion: Family history of women with breast cancer in this study showed history of breast cancer in a second degree female relative increased the risk of breast cancer in white women; positive history was associated with earlier age of onset of the disease. We suggest future studies should look into genetic and biological markers in the second generation family members for increased risk of breast cancer. Health Renaissance, January-April 2013; Vol. 11 No.1; 102-106 DOI: http://dx.doi.org/10.3126/hren.v11i2.8215
Study of antimicrobial susceptibility pattern of Gram positive organisms causing UTI in a tertiary care hospital in eastern region of Nepal
Authors: Baral Ratna , Timilsina S , Jha P , Bhattarai NR , Poudyal N , Gurung R , Khanal B , Bhattachary SK
Published: June 2013

Background: Urinary tract infections (UTIs) are the most important cause of mortality and morbidity affecting all age groups with an estimated 150 million cases occurring globally per year. Resistance to antibiotics is highly prevalent in bacterial isolates causing UTI. Objectives: To observe the isolation of gram positive bacteria causing UTIs and determine their resistance pattern to antibiotics. Methods: A retrospective study was conducted in BPKIHS from August 2009- August 2010. A total of 11022 urine samples from patients who visited BPKIHS were analyzed. All specimens were inoculated on routine culture media. Bacterial isolates were identified by conventional bacteriological methods. Susceptibility testing was performed by standard methods as recommended by clinical laboratory standard institute. Results: A total of 459 gram positive uropathogens were isolated. Altogether 5 different gram positive bacteria were isolated among which Staphylococcus aureus (47%) was the most predominant organism followed by Enterococcus species (34%), Enterococcus faecalis (18%), and Coagulase-negative Staphylococci (1%). UTI caused by gram positive uropathogens was seen in 68.8% females as compared to 31.2% males. Multidrug resistance (MDR) isolates accounted for 308 out of 459 isolates (67.10%). Multidrug resistance was commonest with Enterococcus spp (71.5%) followed by Streptococcus spp (66.6%). Drugs, which retained usefulness for Gram-positive isolates were vancomycin, nitrofurantoin, ciprofloxacin and norfloxacin. Conclusion: The study revealed that bacterial resistance in gram positive uropathogens in tertiary hospital in eastern region continues to be a great problem. So, regular monitoring of emergence of resistance is highly recommended and specific antibiotics should be given only after the laboratory results are available. Health Renaissance, January-April 2013; Vol. 11 No.1; 119-124 DOI: http://dx.doi.org/10.3126/hren.v11i2.8218
Quality of life and pain prevalence in postoperative patients with oral malignancy- a prospective longitudinal study
Authors: Jaisani Mehul , Baliga M
Published: June 2013

Background: Epidemiology of pain in oral cancer patients, the effects of curative treatment on this pain, and the impact that the pain experience may have on the patient.s quality of life is an overshadowed topic. Methods: A prospective and descriptive study on prevalence of pain, with its impact on quality of life (QOL) was carried out in 36 diagnosed cases of squamous cell carcinoma (SCC) of oral cavity, and were treated with a curative intension. QOL assessment was done using a questionnaire followed by clinical examination at 6months and 12 months post-treatment. Pain was assessed using memorial pain assessment card and pain faces. Results: 42 patients enrolled for this descriptive study but at the end of one year study period only 36 patients completed both the questionnaires. We observed that QOL in our patients, was significantly influenced by mode of soft tissue reconstruction, tongue mobility, speech intelligibility, cosmesis and oral competence. At 6months 16.7% patients reported no pain but at 12months this proportion increased to 52.8%. Severity of pain reduced significantly over time with significant improved pain relief. We observed significant correlation between pain, QOL and mood scale at 12months post-treatment. Conclusion: This study has clarified and statistically confirmed some principles on the residual QOL for patients treated by surgical resection and flap reconstruction for cancer of the oral cavity already presented in the literature. Pain is common among those presenting with curable head and neck cancer. Pain can be reduced by curative treatment. Health Renaissance, January-April 2013; Vol. 11 No.1; 125-133 DOI: http://dx.doi.org/10.3126/hren.v11i2.8219
Colorectal signet ring cell carcinoma coexisting with tuberculosis
Authors: Pradhan Anju , Karki S , Khaniya S
Published: June 2013

Background: Though tuberculosis and carcinoma of the bowel are fairly common conditions, the sites of predilection for the two differ, tuberculosis being common in the ileum while carcinoma in the large bowel. Both occurring at the same site is a very rare entity and very few cases have been reported in the literature and none has been recorded in the eastern part of Nepal. Case description: A 35 years old female presented with the complaint of constipation and passage of blood mixed stool since one month. Proctoscopy revealed constricting lesion in the rectum. Provisional diagnosis of carcinoma rectum was made. Histopathological examination showed ulceroinfiltrative lesion in the rectum measuring 11cm in length and extending upto the distal end of sigmoid colon. After microscopic examination a diagnosis of Signet ring cell carcinoma of rectum and sigmoid colon coexisting with tuberculosis was made. Seven lymph nodes dissected from the specimen showed metastatic tumor deposits along with coexisting tuberculous lymphadenitis. Special stain for AFB (TB) and IHC for mucicarmine was positive. Health Renaissance, January-April 2013; Vol. 11 No.1; 162-165 DOI: http://dx.doi.org/10.3126/hren.v11i2.8226
Massively-Parallel Molecular Dynamics Simulation of Clathrate Hydrates on Blue Gene Platforms
Authors: English Niall
Published: June 2013

Massively-parallel classical equilibrium molecular dynamics (MD) simulations have been performed to investigate the computational performance of the Simple Point Charge (SPC) model and single-particle model of Molinero et al. applied to simulation of methane hydrates, using systems consisting of several million particles, on a variety of Blue Gene/L, P and Q platforms. It was found that the newer Blue Gene/Q platform offers attractive performance for massively-parallel simulation.
Stability of Slash Pine Families with Major Gene and Partial Resistance to Single-Gall and Mixed-Gall Inocula of Cronartium quercuum fusiforme in Greenhouse Studies
Authors: Gramacho Karina , Schmidt Robert , Miller Thomas
Published: June 2013

Single-gall and mixed-gall inocula from fusiform rust (Cronartium quercuum fusiforme) galls in field studies were used in greenhouse tests to investigate their pathogenic variability and the temporal and spatial stability of fusiform rust incidence of resistant slash pine (Pinus elliottii var. elliottii) seedlings. Analyses of variance showed significant main effects for families and inocula and for the interactions of families and inocula indicating abundant pathogenic variation and differential family resistance. Averaged over all families and inocula, there were no significant differences between sequential inocula, i.e., inocula from successive generations of the pathogen. However, when analyzed separately Family R1 with segregated major gene resistance showed increased rust incidence with successive generations of the pathogen. Also Family R1 accounted for a major portion of the temporal (51.4%) and spatial (49.6%) interaction sum of squares. In contrast the other resistant families each accounted for a minor portion of this statistic. These results indicate pathogen virulence toward major gene resistance, possible selection for virulence and the relative instability of Family R1 compared with other resistance families.
Corrigendum: Ubiquitin Pathway and Ovarian Cancer
Authors:   Current Oncology Editorial Office
Published: June 2013

The expansion of a gene name was incorrectly given in the paper (p. 326, col. 1, under the subheading “2.6 Ubiquitin-Like Activity of shprh Protein and Ovarian Cancer”).[...]
L'inventaire des plans d'eau français : outil d'une meilleure gestion des eaux de surface
Authors: Bartout Pascal , Touchart Laurent
Published: June 2013

La France souffre d’un manque important de connaissances dans le domaine de l’eau, et notamment des plans d’eau, contribuant à l’inadéquation des mesures préconisées à l’heure actuelle sur les milieux lotiques et lentiques. À travers un travail d’inventaire poussé mettant en évidence 16 fois plus de plans d’eau que ce que ne reconnaît officiellement l’État français, les auteurs tentent de comprendre les raisons de cette méconnaissance de la localisation même des milieux lentiques en 2012 en s’attachant à synthétiser les apports chiffrés et méthodologiques des quelques inventaires existants puis à confronter les résultats de leurs travaux avec le terrain. Entièrement géoréférencé, ce nouvel outil doit pouvoir constituer une base solide de connaissances autour de laquelle nombre de recherches complémentaires sur les lacs, étangs et autres mares seront à même de produire des indicateurs fiables quant au bon état des eaux préconisé par la DCE 2000, tout en insistant sur le volet humain, trop souvent négligé.
Configurations d'activité collective et processus d'apprentissage lors de travaux pratiques
Authors: Guérin Jérôme
Published: June 2013

Cet article est consacré à l’étude de l’activité collective lors de travaux pratiques en lycée professionnel. En s’inscrivant dans une approche orientée « activité », l’objectif de l’étude est de décrire les formes d’interactions entre les élèves et l’enseignant en classe afin d’identifier leurs incidences sur le maintien d’une activité collective viable et les processus d’apprentissage. La reconstruction de l’organisation et de la signification de l’activité a mis en évidence des formes typiques de configuration d’activité collective qui participent à l’investissement durable des élèves et offrent des opportunités en termes d’apprentissage. Une analyse fine d’un cas exemplaire de processus de coordinations et d’ajustements montre comment les enseignants exploitent l’émergence des erreurs de production pour inciter les élèves à construire de nouvelles connaissances pour l’action et à étendre la signification de savoirs théoriques. L’article discute la relation entre configuration d’activité et culture commune, la relation entre activité productive et activité constructive, et la spécificité de la disposition des enseignants à enseigner en travaux pratiques.
Politique monétaire unique, taux bancaires et prix immobiliers dans la zone euro
Authors: Blot Christophe , Labondance Fabien
Published: June 2013

L’objectif de notre contribution est d’analyser empiriquement les mécanismes de transmission de la politique monétaire vers les prix immobiliers dans les principales économies de la zone euro. Nous tenons compte explicitement du rôle des banques, via le canal du taux d’intérêt. Notre approche est en deux étapes : la première permet d’illustrer la répercussion des taux contrôlés par la BCE sur les taux pratiqués par les banques pour les crédits immobiliers, tandis que la deuxième fait le lien entre les taux bancaires et les prix immobiliers. Cette analyse permet de comprendre les différentes sources de l’hétérogénéité de la transmission de la politique monétaire. Il apparaît en effet que le canal du taux d’intérêt est de plus en plus homogène dans la zone euro. Mais ce résultat masque le rôle des effets d’offre de crédit qui ont pu induire une hétérogénéité de la transmission de la politique monétaire. La transmission des taux bancaires aux prix immobiliers et à l’ensemble de l’économie demeure dépendante des structures propres à chaque État membre.
Psychose, somatose... et entre les deux
Authors: Chambrier-Slama Josiane
Published: June 2013

L’auteur rappelle la place que Michel de M’Uzan accorde aux fonctionnements paradoxaux et lui pose cinq questions. Existe-t-il en clinique un seul type de désinvestissement ? Ne faut-il pas considérer de nouveaux types de narcissismes ? Peut-on se contenter d’écarter la référence à la pulsion de mort et se proposer, là où la destructivité fait rage, « d’être nulle part » ? Cette référence, insistante en clinique contemporaine, ne témoigne-t-elle pas d’un moment évolutif du processus théorisant, à dépasser ? Quels rapports entre somatose et état-limite ?
Psychose somatose : commentaire de l'observation d'A. Gibeault
Authors: Jean-Strochlic Christine
Published: June 2013

La discussion du cas présenté par A. Gibeault retrouve l’impact traumatique initial et son évolution en partie silencieuse jusqu’à l’apparition de somatisations. Apparaît ainsi une histoire psychosomatique qui prend appui sur la relation transférentielle et origine un autre éclairage psychopathologique.
A Modular Framework for Vision-Based Human Computer Interaction
Authors: Iannizzotto Giancarlo , La Rosa Francesco
Published: June 2013

This chapter introduces the VirtualBoard framework for building vision-based Perceptual User Interfaces (PUI). While most vision-based Human Computer Interaction applications developed over the last decade focus on the technological aspects related to image processing and computer vision, our main effort is towards ease and naturalness of use, integrability and compatibility with the existing systems and software, portability and efficiency. VirtualBoard is based on a modular architecture which allows the implementation of several classes of gestural and vision-based human-computer interaction approaches: it is extensible and portable and requires relatively few computational resources, thus also helping in reducing energy consumption and hardware costs. Particular attention is also devoted to robustness to environment conditions (such as illumination and noise level). We believe that current technologies can easily support vision-based PUIs and that PUIs are strongly needed by modern applications. With the exception of gaming industry, where vision-based PUIs are already being intensively studied and in some cases exploited, more effort is needed to merge the knowledge from HCI and computer vision communities to develop realistic and industrially appealing products. This work is intended as a stimulus in this direction.
Open Source Urban Governance
Authors: Silva Carlos Nunes
Published: June 2013

The chapter explores the emerging paradigm of Open Source Urban Governance, a new urban policy model associated with the extensive use of computer-mediated communication and with the use of different modes of citizen mass collaboration – Crowdsourcing, Neogeography, Volunteered Geographic Information (VGI), and Citizen Science. The chapter is organized into five main sections. The first section discusses the concept of e-participation. The next two sections address the objectives, context, determinants, and ethical issues in e-participation, and the different levels of e-participation in each policy stage and by stakeholder. The last two sections explore the e-tools available for citizen participation in urban governance and the impacts and benefits of e-participation. The chapter ends with a reference to future research directions in this field.
Model-Driven Development of Mobile Information Systems
Authors: Bruns Ralf , Dunkel Jürgen
Published: June 2013

Significant improvements in the development of business applications for mobile devices have been made in recent years. However, the state of the art in software development is for mobile computing still not as mature as it is for conventional information systems on desktop computers. Therefore, declarative and code generation approaches should be preferred instead of manually coding. In the BAMOS project an architecture has been designed and implemented for the generic and flexible development of mobile information systems. The architecture is based on the declarative description of the available services and enables the access to service-oriented architecture (SOA) systems for mobile devices. In this chapter, the authors present a model-driven approach for generating almost the complete source code of mobile services. By applying model-driven development, a new service can be conveniently modeled with a graphical modeling tool and the graphical models are then used to generate the corresponding XML descriptions of the mobile user interface and the workflow specification. In order to use such a service no specific source code has to be implemented on the mobile device. In addition, an alternative modeling approach based on a textual representation of the models using a formal grammar expressed in EBNF is presented.
SaaS Requirements Engineering for Agile Development
Authors: Gill Asif Qumer , Bunker Deborah
Published: June 2013

The emergence of Software as a Service (SaaS) has made it possible to develop dynamic and complex business processes as eServices. The development of business processes as eServices (SaaS) can be assisted by the means of adaptive or agile development processes. The development of business processes in terms of SaaS require to perform SaaS requirements engineering (RE), which is an important phase of a software development process for the success of any project. The challenge here is how best to do SaaS RE (e.g. mapping business process to eServices) and select agile development practices for developing business processes in terms of SaaS. In order to address this challenge, an integrated agile RE model for SaaS project development environments is outlined within this chapter. The purpose of the proposed RE model is to aid in iteratively determining SaaS requirements in short iterations as opposed to the “only first and onetime upfront” phase of a development process. Each identified SaaS requirement or a set of requirements for a given iteration is linked to a single or set of specific agile practices for implementation in short iterations. This model can be used as a guideline by organisations wishing to understand the challenging task of mapping business processes to SaaS and its implementation by using agile software development processes or practices.
Implementing Internal Software Process Assessment
Authors: Fauzi Shukor Sanim Mohd , Ramli Nuraminah , Nor Mustafa Kamal Mohd
Published: June 2013

Software process assessments have become commonplace in the software industry because the software industry usually does not recognize the level of their software process. From the time software is developed, a phenomenon called software crisis exists subsuming wrong schedules and cost estimates, low productivity of people, as well as low productivity. A promising approach out of this crisis is now growing up in the software engineering community. One of the approaches is Software Process Assessment. We present our experience in implementing internal software process assessment at one of the mid-size Information Technology (IT) company by using the customized SPA method. The customized model is basically based on Standard CMMI Appraisal Method for Process Improvement (SCAMPI).
A Model to Assist the Maintenance vs. Replacement Decision in Information Systems
Authors: Pusatli O. Tolga , Regan Brian
Published: June 2013

An extensive literature review shows that Information Systems (IS) are changed and eventually replaced by substitutes under the influence of productivity, popularity, and specialisation of IS along with associated available support facilities, maintenance activities, failures, and user feedback. This chapter compiles those factors emerged from software engineering, IS, software quality assurance measurements, and computer science literature. A final product is a proposed model bringing those factors together as they are suspected to raise a need for taking the decision of evaluating change requests that may lead to a further maintenance or replace the IS. While keeping in mind that limitations on advanced testing exist, an expected service of such a model may help decision makers to explain maintenance/replacement decision of IS/component in a more itemized manner, hence diminish overburden pressure of experience responsibility on them.
Scheduling Large and Complex IT Projects Using Sliding-Frame Approach
Authors: Cohen Yuval , Sadeh Arik , Zwikael Ofer
Published: June 2013

Many IT projects and software development projects are very complex and sophisticated involving a large coordinated team. Such projects are a constant part of the operations of software companies such as Microsoft, SAP, Oracle, Google, Yahoo, IBM, and others. Many other companies carry large software projects as part of their IT operations. As a result of the size and complexity of such projects, a rolling horizon approach for their planning and management is not only plausible but also desirable. For large projects, traditional project scheduling techniques cannot provide an optimal and timely solution to minimum project duration under precedence and resource constraints. This paper proposes a technique that allows utilizing non-polynomial (NP) algorithms in a heuristic manner – generating high quality schedules in reasonable time. This approach can be applied efficiently for solving most project scheduling problems. The main advantage of this approach is its ability to dissect the original problem into small sub-problems of a controllable size to which exact techniques can be applied. Thus, it neutralizes the complexity of the applied algorithms (and their non-polynomial growth). Moreover, the same technique could be used for implementing a rolling-horizon approach in project planning and management.
Quality-Driven Software Development for Maintenance
Authors: Dubielewicz Iwona , Hnatkowska Bogumila , Huzar Zbigniew , Tuzinkiewicz Lech
Published: June 2013

Software maintenance is sometimes considered as a special kind of activity that is separated from a software development process. Meanwhile, the opposite is true; maintenance should be taken into account from the beginning of the software development process. Because a model-based software development is the prevailing software development paradigm, the maintainability should be considered within models that arise in software development process. We claim that the quality of the models arising in the software development process has a positive influence on their maintainability: the higher quality of the models, the more effective maintainability activity. The background for our consideration is MDA approach, and the scope of the consideration is limited to perfective maintenance only. The set of so called 6C quality characteristics is assumed to define a quality of MDA-models. Our selection of 6C quality characteristics is justified by the fact that they are related to activities performed on models within the maintenance. To assess MDA-models in the context of the maintainability, we define checklists for the 6C characteristics. These checklists are used for derivation of some measures which are useful in checking to what scope a given characteristics is satisfied. The main advantage of the approach is its independence of the knowledge of future changes of user requirements that trigger perfective maintenance. In the chapter, we demonstrate a simple example of how to assess the quality of PIM-models that are the realization of the CIM-model. Additionally, we discuss how to select, for further development, the best PIM-model from the set of possible solution.
Business Intelligence and Agile Methodology for Risk Management in Knowledge-Based Organizations
Authors: Almustafa Muhammad Mazen , Alkhaldi Dania
Published: June 2013

In this highly technology - dependent, knowledge- based economy, the causes for failure of most software development projects are related to rapid technology changes, in-flux business requirements, or failure to tackle risk. Accordingly, risk management plays significant and crucial role in organizations’ response to this rapidly changing economy. Risk management process is illustrated in four main steps: identify the risk, analyze the risk, treat the risk and monitor the risk. This chapter discusses and explores the role of business intelligence and agile methodology to manage risk effectively and efficiently. It explores the risk management traditional tools that are commonly used, the role of business intelligence in risk management, and the role of agile methodology in risk management.
Analyses of Evolving Legacy Software into Secure Service-Oriented Software using Scrum and a Visual Model
Authors: Chung Sam , Crompton Conrado , Bai Yan , Endicott-Popovsky Barbara , Baeg Seung-Ho , Park Sangdeok
Published: June 2013

This chapter explores using service-oriented computing to reengineer non-secure legacy software applications to create new secure target applications. Two objectives of this chapter are: (1) to analyze the architectural changes required in order to adopt new web technologies and cope with resultant vulnerabilities in source code; and (2) to measure the level of effort required to modernize software by adopting new web technologies and adding security countermeasures. To meet these objectives, a model-driven Scrum for Service-Oriented Software Reengineering (mScrum4SOSR) methodology was chosen and applied to a reengineering project. Scrum is employed to manage the reengineering project, as well as to measure implementation effort related to the modernization process. Further, a re-documentation technique called 5W1H Re-Doc is used to re-document the non-secure software application at a high level of abstraction in order to help project participants comprehend what is needed to identify candidate services for service-oriented reengineering. Case studies with and without security features are created for different types of applications - a desktop graphical user interface, a web application, a web services application, a restful web services application, and an enterprise service bus application.
The Use of HCI Approaches into Distributed CSCL Activities Applied to Software Engineering Courses
Authors: Giraldo Fáber D. , Villegas María Lilí , Collazos César A.
Published: June 2013

This chapter is written as one method to supply the necessary support systems for educational and training design. As such, the authors propose their global development software (GDS) methodology emerges as a revolutionary discipline. It is based on the externalization of software development between geographically distant places in order to reduce development costs. Traditional educational and training process in software engineering must be advocated to consider (or enhance) this new trend, with its respective challenges and necessary skills (multicultural interaction, effective communication, distributed software project management), into curriculums. GDS therefore demands the presence of supporting systems to provide permanent user interaction and enhanced communication tasks. The presence of such interactions is a key aspect to promote the performance and knowledge acquisition processes among globally distributed software development teams. The main goal of such interactions into platforms that support distributed contexts is to reduce the impact generated by the tyranny of distance. This work exposes some human-computer interaction (HCI) principles applied by the authors’ research team in order to structure a supporting user interface environment that reflects the distributed computer supported collaborative learning (CSCL) practice in software engineering. The chapter describes several services that are provided for managing the interaction between participants, such as synchronous interactions through Microsoft © LiveMeeting and Adobe © Connect, and asynchronous interactions such as Moodle forums. In this way, the authors implement effective HCI into educational professional practice scenarios for a distributed CSCL within the specialized domain of software engineering.