bluuebunny/crossref_metadata_2025 huggingface dataset:
Soutenir le développement professionnel des enseignants en haute école par la recherche : analyse d’un dispositif d’appel à projets interne
Authors: Biémar Sandrine , Quinting Birgit , Bragard Isabelle
Published: July 2023

Le décret de 2013 définissant les missions des institutions d’enseignement supérieur en Fédération Wallonie-Bruxelles de Belgique a identifié la recherche appliquée comme étant une mission à part entière des hautes écoles. Or, le projet professionnel des enseignants qui évoluent dans ces établissements est initialement guidé par l’enseignement. Afin d’affilier son corps enseignants à cette nouvelle mission, une hautes écoles a mis en place un appel à projets interne. L’étude présentée dans cet article prend pour objet le développement professionnel inédit des enseignants impliqués dans des projets de recherche. Dans une perspective d’amélioration continue de la démarche d’appel, sa visée compréhensive et exploratoire est de documenter le processus de construction identitaire dans lequel sont engagés ces enseignants-chercheurs, d’identifier les apprentissages réalisés ainsi que les facilitateurs et obstacles perçus. Ce sont 51 enseignants ont été interrogés par le biais d’un questionnaire individuel proposé en ligne. Les données ont fait l’objet d’une analyse de contenu qualitative. Les résultats indiquent notamment que le souhait de faire de la recherche s’articule à celui d’améliorer et d’alimenter ses pratiques d’enseignement. A cet égard, l’approche du Scholaship of Teaching and learning (Brew, 2010) pourrait apporter un éclairage sur la spécificité du processus de développement professionnel en HE. Le principal frein reste le temps dévolu au projet de recherche, à la fois trop court et difficile à articuler avec le temps dévolu à l’enseignement. Des leviers sont identifiés dans la dynamique collective au sein et entre équipes de projet ainsi que dans l’accompagnement institutionnel qui s’avère nécessaire.
Le codéveloppement « inter »professionnel pour aller au-delà des disciplines en formation initiale
Authors: Baron Marie-Pierre , Sasseville Nathalie , Vachon Catherine , Côté Carole , Doucet Manon
Published: July 2023

La Clinique universitaire d’orthopédagogie de l’Université du Québec à Chicoutimi (Québec, Canada) permet aux étudiants en enseignement en adaptation scolaire et sociale et de travail social d’offrir des services interprofessionnels à la population et, de ce fait, de développer en cours de formation les compétences propres à la collaboration. Pour soutenir la collaboration interprofessionnelle, des dispositifs sont mis en place à l’intérieur des cours, dont celui du groupe de codéveloppement professionnel. L’objectif de l’article est de connaitre la perception des étudiants inscrits au baccalauréat en enseignement en adaptation scolaire et sociale et en travail social quant à l’utilisation des groupes de codéveloppement professionnels comme soutien à la collaboration interprofessionnelle, et ce, au regard des cinq objectifs visés par ce dispositif. L’analyse de contenu d’entrevues de groupe réalisées au début et à la fin du projet rend compte, d’une part, que le contexte de formation favorise l’atteinte des objectifs du codéveloppement et, d’autre part, que les groupes de codéveloppement professionnels permettent la mise en place de facteurs favorisant la création de la relation de collaboration. Ce contexte de formation initiale, instauré dans le cadre d’activités cliniques, permet d’arrimer la théorie à la pratique et d’adapter la formation initiale aux besoins des milieux scolaires et sociaux.
Améliorer les pratiques d’enseignement pour favoriser la prise de notes des étudiants - Un accompagnement pédagogique par la recherche-action
Authors: Shtembari Arber , Gimenes Guillaume , Epinoux Nicolas , Haller Sophie , Olive Thierry
Published: July 2023

Cette étude restitue les résultats d’une recherche-action menée à l’université de Poitiers ayant pour objet un accompagnement pédagogique sur les pratiques d’enseignement favorisant la prise de notes des étudiants. La recherche-action impliquait une démarche réflexive de l’enseignant à partir des résultats d’un questionnaire sur la prise de notes mesurant les pratiques pédagogiques. Ce questionnaire novateur a été l’outil central de la démarche d’accompagnement permettant de croiser le regard de l’enseignant et de ses étudiants. La première partie du questionnaire renseigne sur les modalités pédagogiques mises en œuvre par l’enseignant pendant le cours; la seconde partie interroge les étudiants sur leur ressenti quant à leur capacité à prendre des notes lors d’un cours magistral. L’accompagnement pédagogique a notamment contribué à une prise de conscience de la part de l’enseignant sur certains aspects de sa communication pendant le cours en lui permettant de mettre en œuvre des modalités pédagogiques favorisant la prise de notes de ses étudiants. À la suite de cet accompagnement, les étudiants ont exprimé au travers de leurs réponses au questionnaire que les nouvelles pratiques pédagogiques de l’enseignant ont amélioré leur prise de notes.
Facteurs a priori et in situ de l’engagement des étudiants dans les forums de discussion des MOOC
Authors: Nleme Ze Yannick Stéphane , Molinari Gaëlle
Published: July 2023

Cette étude de cas instrumentale mixte explore les potentiels facteurs d’engagement des étudiants de l’université de Genève dans les forums de discussion des MOOC. Pour ce faire, les données issues de 127 réponses à un questionnaire et 11 entretiens semi-structurés ont été analysées au prisme de la théorie de l’autodétermination et ses motifs d’engagement, des modèles de la dynamique motivationnelle, de l’acceptabilité et l’acceptation in situ des technologies. Les résultats ont permis d’élaborer un modèle qui montre comment 11 facteurs a priori et 23 in situ influencent l’engagement des étudiants dans les forums.
Usage pédagogique des analogies dans l’enseignement supérieur
Authors: Naud Stéphanie , Sander Emmanuel , Benetos Kalliopi
Published: July 2023

Nécessaires à l’apprentissage, les conceptions intuitives agissent comme un filtre et contraignent la construction de conceptions nouvelles. Le dispositif pédagogique « Argumentation par Analogie » a été élaboré dans le but de soutenir le changement conceptuel des étudiants. Les activités soutenues par les technologies numériques visent à rendre explicites les conceptions intuitives mobilisées par les étudiants par le biais d’analogies et à pointer leurs limites à travers des analogies alternatives. L’objectif de cet article est de faire état des effets de l’usage pédagogique des analogies sur l’enseignement dans un contexte universitaire. Nos hypothèses sont testées par trois études traitant les données recueillies auprès des étudiants de master et de première année de bachelor en sciences de l’éducation. Les résultats obtenus à la suite des analyses qualitatives (propriétés de la notion mobilisées; nature des similitudes) et quantitatives (proportion des analogies, des types de similitudes) permettent d’affirmer que l’aptitude à produire une analogie et le contenu de celles-ci informent sur la maîtrise de la notion en question par les étudiants. Ainsi, recueillir les conceptions des étudiants sur les notions abordées par le biais de la production d’analogies donne à l’enseignant une vision plus claire de l’acquisition des notions travaillées. Le dispositif « Argumentation par Analogie » permet de rendre conscientes et explicites les analogies jusqu’alors utilisées de façon informelle pour qu’elles deviennent une base systématique de la construction de nouvelles connaissances.
Rôle de l’expérience professionnelle dans le milieu des soins sur les performances et la motivation des étudiants en soins infirmiers dans un dispositif hybride
Authors: Sacré Margault , Toczek Marie-Christine , Policard Florence , Serres Guillaume , Paulet Catherine , Petit Sabine , Neuville Emmanuelle , Lafontaine Dominique
Published: July 2023

Les dispositifs d’enseignement hybride dans la formation en soins infirmiers sont peu représentés dans la littérature scientifique (Li et al., 2019). Pourtant le public de cette formation est particulier puisque nombre d’étudiants ont une expérience professionnelle dans le milieu des soins avant même de débuter leur cursus. Cette étude se propose d’identifier les variables qui prédisent les performances des étudiants, notamment en prenant en compte leur expérience professionnelle. Dans un dispositif hybride alternant un enseignement sous la forme de capsules vidéo, accompagnées d’évaluations formatives en ligne et des travaux dirigés en présentiel, des variables liées à la motivation et à la participation sont mesurées auprès de 143 étudiants. Les résultats montrent que les comportements observables et la motivation des étudiants influencent différemment leurs performances selon qu’ils ont ou non une expérience professionnelle préalable. Ces résultats sont décrits et discutés et pourraient constituer un point d’ancrage à une littérature scientifique combinant l’enseignement hybride et la formation en soins infirmiers.
Métalittératie et pensée critique de futurs enseignants : pratiques et perceptions en francophonie
Authors: Michelot Florent , Poellhuber Bruno , Béland Sébastien
Published: July 2023

La pensée critique et la capacité à aborder l’information sont apparues comme étant cruciales au cours des dernières années, particulièrement en raison du rôle délétère, réel ou supposé, des médias sociaux. Pour répondre à cet enjeu, le rôle de l’éducation et, par conséquent, des enseignants apparaît central. Dans cet article, nous rapportons les observations réalisées auprès de futurs enseignants en formation initiale dans une activité de visionnement et de débat sur un groupe social Facebook. Grâce à une vidéocapture (screencasting) et un protocole de pensée à voix haute, nous avons été en mesure de documenter les pratiques de pensée critique et les stratégies de métalittératie (un concept englobant des compétences telles que la littératie informationnelle et numérique) d’enseignants en formation en Wallonie, en France et au Québec (n = 9). Avec une série d’entrevues (n = 32), nous avons pu mettre en contraste ces stratégies avec les stratégies déclarées comme étant connues. Les étudiants en formation professionnalisante mobiliseraient davantage des stratégies métacognitives et autocritiques tandis que celles et ceux en formation disciplinaire mobiliseraient plutôt des stratégies dites critériées. Quel que soit le type de formation, on recense moins de stratégies mobilisées que de stratégies connues.
A new nominal genus for “Prestosuchus” chiniquensis Huene, 1938 (Triassic of southern Brazil): Huenesuchus, genus novus et combinatio nova
Authors: Kischlat Edio-Ernst
Published: July 2023

The nominal genus Prestosuchus Huene was originally proposed comprising two nominal species but without a valid indication of the type-species. According to the International Code of Zoological Nomenclature, this indication is essential for proposals after the year 1930. Consequently, both nominal species, although valid, have a very uncomfortable situation. Therefore, a new nominal genus, Huenesuchus, is here proposed to correct this nomenclatural situation to be used in the new combination Huenesuchus chiniquensis. In addition, it is noted that two class-group names that have been used lately in the literature are previously occupied. The first, Suchia Krebs, is previously occupied by Simpson. The second, Loricata Merrem, is previously occupied by Schumacher. Therefore, two substitute names are here proposed: Holosuchia for the first and Loricatosuchia for the second. Keywords: Archosauria, Prestosuchus, Huenesuchus, Santa Maria Formation, Triassic.
A new herrerasaurid dinosaur record from southern BrazilL (Upper Triassic) and its faunal association
Authors: Silva Fernanda Oliveira da , Martinelli Agustín G. , Ferigolo Jorge , Ribeiro Ana Maria
Published: July 2023

The Predebon Site, located in São João do Polêsine, Quarta Colônia region (Rio Grande do Sul, Brazil) has a Triassic fauna, including footprints and traces of small vertebrates and abundant remains of rhynchosaurs. This fauna is typical of the Hyperodapedon Assemblage Zone, which is correlated to the late Carnian Ischigualasto Formation (Ischigualasto-Villa Unión Basin) in Argentina. The present study records new fossil remains for the Predebon Site collected in 2001 that consists of two dorsal and two sacral vertebrae referred to the same individual (MCN-PV 10344), and two isolated, serrated blade-shaped teeth (MCN-PV 10425 and 10426). The trunk vertebrae were identified as between 11th and 15th. The sacral vertebrae are fully fused, with no indication of another fused vertebral element, not even signs suggestive of dorsosacral and caudosacral vertebrae, also because the ilia are not preserved. The general characteristics observed are: (i) lateral fossa in the vertebral body; (ii) concave ventral face of the vertebral body; (iii) neural spine high and wide at the top, subquadrangular in shape, in both dorsal and sacral vertebrae; (iv) infrapre- and infrapostzygapophyseal ridges on the dorsals; (v) presence of hyposphene and hypantrum; and (vi) first sacral vertebra larger than the second, with transverse processes and broad sacral ribs, triangular in shape in dorsal view. This set of features in the vertebral elements is similar to that present in Herrerasaurus ischigualastensis from the Ischigualasto Formation and allows us to consider MCN-PV 10344 as a member of the Herrerasauridae clade. It differs from Staurikosaurus pricei, which has three smaller and more slender sacral vertebrae and a low neural spine without subquadrangular platform at the top, and from Gnathovorax cabreirai, which has subrectangular platforms, slightly more elongated anteroposteriorly, suggesting the presence of a new herrerasaurid morphotype. The two isolated, serrated blade-shaped teeth were attributed to Archosauriformes indet., because this morphotype is observed in several groups within this clade. Keywords: Dinosauria, Hyperodapedon Assemblage Zone, late Carnian, Predebon Site, Rio Grande do Sul, Brazil.
Burdigalian ichnofabric from the Guri Member, Dezful Embayment, southwestern Iran
Authors: Ghanavati Mehdi , Moghaddam raj Maghfouri , Aleali Mohsen , Arian Mehran
Published: July 2023

The carbonate strata of the Burdigalian Guri Member are located in the Dezful Embayment along the northern Persian Gulf shore. Ichnofabric analysis and paleoecology of the Guri Member in the Dezful Embayment are described by investigating three outcrop sections. The facies features of the Guri Member show a very shallow marine environment with high oxidation content. The Guri Member contains remarkably well-preserved specimens of Thalassinoides suevicus. It is mainly recorded as Y and T forms in the shallow water facies. Two ichnofabrics were recognized in the dominantly carbonate sedimentary succession. Ichnofabrics A, and B are interpreted as representing the tidal flat and lagoon environments respectively. Ichnofabric interpretation of the Miankuh section might be simply indicating more time to colonization in relation to the Parsi section. Keywords: ichnofabric, Miocene, Dezful Embayment, Guri Member.
Paleoecologia isotópica (δ13C, δ18O) de mamíferos do Pleistoceno final–Holoceno de Ituaçu, Bahia, Brasil
Authors: Leoni Ronaldo Araujo , Dantas Mário André Trindade , Cherkinsky Alexander , Alves-Silva Laís
Published: July 2023

Isotopic paleoecology (δ13c, δ18o) of mammals from the late Pleistocene–Holocene of Ituaçu, Bahia, Brazil. In this paper, the isotopic paleoecology (δ13C, δ18O) of fossils of the mammals Alouatta sp., Cebus sp., Myocastor coypus, Dicotyles tajacu, Tamandua tetradactyla, and Tapirus terrestris collected in Lapa do Bode cave, Ituaçu Municipality, State of Bahia, is described. Radiocarbon ages of 6,480–6,653 Cal yr. BP (14C collagen = 5,790±25 years) were obtained for T. tetradactyla and 27,798–28,221 Cal yr. BP (14C collagen = 23,950±50 years) for M. coypus. The herbivore taxa (T. terrestris, δ13C = -14.9 ‰; Alouatta sp., δ13C = -13.0 ‰; M. coypus, δ13C = -12.7 ‰) had a diet composed mainly of C3 plants (piC3< 80%), indicating forested environment, a similar interpretation also suggested from other taxa that ingested >60% C3 plants such as Cebus sp. (δ13C = -13.1 ‰); D. tajacu (δ13C = -9.7 ‰; T. tetradactyla, δ13C = -11.0 ‰), allowing to suggest that these taxa lived in low-density forests and arboreal savanna habitats. Keywords: caves, paleodiet, carbon isotopes, oxygen isotopes.
Ideluralia nom. nov., a new name for the ostracode genus Bairdiella Egorova, 1960
Authors: Antonietto Lucas Silveira , Brandão Simone Nunes
Published: July 2023

The purpose of this work is to propose a new name, Ideluralia nom. nov., to the genus Bairdiella Egorova (Ostracoda), preoccupied by Bairdiella Gill (Teleostei). Keywords: nomenclature, taxonomy, Ostracoda, Devonian.
Posterior longitudinal ligament suturation after lumbar discectomy provides postoperative a large intradural area: First report
Authors: Batcik Osman Ersegun , Kanat Ayhan , Durmaz Serdar , Ozdemir Bulent , Beyazal Mehmet
Published: July 2023

Background:

Stability and flexibility of the spine are provided by the posterior longitudinal ligament (PLL). It plays a key role in the pathogenesis of lumbar disc herniation (LDH) by preventing disc protrusion. The effect of the suturing of the PLL on the intradural area was investigated.

Patients and Methods:

The patients were included in whom lumbar microdiscectomy was performed between January 2021 and July 1, 2022. The patients were randomly divided into two groups as PLLs were sutured and unsutured.

Results:

Forty-six (23 males and 23 females) patients were included. The PLLs were sutured in 22 patients (Group 1) and not sutured in 24 patients (Group 2). The levels, sides of LDHs, and ages and gender of patients were also analyzed in both groups, which were not statistically significant. Preoperative mean spinal intradural areas were 77.29 mm2 for the PLL unsutured group and 85.40 mm2 for the PLL sutured group (Groups 1 and 2). For patients in Groups 1 and 2, the postoperative mean spinal intradural areas grew to 134.73 mm2 and 96.12 mm2, respectively. The difference in preoperative mean spinal intradural regions between the two groups was not statistically significant; however, Group 1 showed a substantial difference (sutured PLL patients).

Conclusions:

This study first time indicates that suturing PLL has a protective and supportive role in patients who were operated on for LDH.
Anterior selective scalenectomy for periforaminal exposure in the ventral supraclavicular approach
Authors: Gagliardi Filippo , Medone Marzia , Giordano Leone , Snider Silvia , Piloni Martina , Pompeo Edoardo , Roncelli Francesca , Ruffino Luca , Mortini Pietro
Published: July 2023

Aims and Objectives:

Route of choice to access cervical paravertebral lesions with foraminal involvement is the anterolateral corridor with its variants. Main limitation of these techniques is represented by the limited surgical access to periforaminal area due to the bulk generated by the anterior scalene muscle (ASM). Over the years, alternative techniques for ASM surgical management have been developed, which are still today a matter of debate. Most popular include ASM scalene complete section (SCS) and ASM medial detachment (SMD). Authors describe an innovative, minimally invasive muscle section technique, the anterior selective scalenectomy (ASS), which reduces the risk of iatrogenic morbidity and optimizes exposure of periforaminal area in anterolateral cervical routes.

Materials and Methods:

A laboratory investigation was conducted. Technique was applied in a surgical setting, and an illustrative case was reported.

Results:

ASS is a quick and easy technique to perform. It allows optimization of surgical visibility and control on the periforaminal area in the cervical anterolateral corridor. It respects muscle anatomy and vascularization, favoring functional recovery and management of peri-operative pain; it reduces the risk of morbidity on phrenic nerve and pleura. Considering the minimally invasive nature of the technique, it allows for a slightly more limited exposure compared to traditional techniques while ensuring optimal surgical maneuverability on the target area.

Conclusions:

ASS represents an effective and safe alternative to traditional ASM section techniques for the exposure of periforaminal area in anterolateral cervical routes. It is indicated in case of lesions with paravertebral development and minimal intraforaminal component in the C3-C6 segment.
Reasons for transfer and subsequent outcomes among patients undergoing elective spine surgery at an orthopedic specialty hospital
Authors: Fried Tristan Blase , Lee Yunsoo , Heard Jeremy C. , Siegel Nicholas S. , Issa Tariq Z. , Lambrechts Mark J. , Zaworski Caroline , Wang Jasmine , D'Amore Taylor , Syal Amit , Lawall Charles , Mangan John J. , Canseco Jose A. , Woods Barrett I. , Kaye Ian David , Hilibrand Alan S. , Vaccaro Alexander R. , Kepler Christopher K. , Schroeder Gregory D.
Published: July 2023

Objective:

To evaluate the reasons for transfer as well as the 90-day outcomes of patients who were transferred from a high-volume orthopedic specialty hospital (OSH) following elective spine surgery.

Materials and Methods:

All patients admitted to a single OSH for elective spine surgery from 2014 to 2021 were retrospectively identified. Ninety-day complications, readmissions, revisions, and mortality events were collected and a 3:1 propensity match was conducted.

Results:

Thirty-five (1.5%) of 2351 spine patients were transferred, most commonly for arrhythmia (n = 7; 20%). Thirty-three transferred patients were matched to 99 who were not transferred, and groups had similar rates of complications (18.2% vs. 10.1%; P = 0.228), readmissions (3.0% vs. 4.0%; P = 1.000), and mortality (6.1% vs. 0%; P = 0.061).

Conclusion:

Overall, this study demonstrates a low transfer rate following spine surgery. Risk factors should continue to be optimized in order to decrease patient risks in the postoperative period at an OSH.
Optimal anatomical angle and distance for drilling in cervical oblique corpectomy: A surgical anatomical study
Authors: Baran Oguz , Saygi Tahsin , Balak Naci
Published: July 2023

Background:

One of the difficulties of oblique corpectomy, less discussed in the literature, is the problem of how to achieve an optimum corpectomy. Therefore, this anatomico-radiological study was conducted to shed light on the use of the microscope at an appropriate angle and optimum drill distances in clinical cases undergoing cervical oblique corpectomy surgery.

Materials and Methods:

We examined the average distance of the diagonal line extending from the medial aspect of the ipsilateral vertebral foramen to the contralateral pedicle in cervical computed tomography -angiography axial scans in four cervical vertebrae, C3, C4, C5, and C6. We also measured the average angle between this diagonal trajectory and the horizontal line, making a total of 712 measurements in 89 patients.

Results:

We found that horizontal drilling with an average length of 23–26 mm at an acute angle of about 22° °–23°° is optimal for adequate decompression of the spinal cord in the oblique corpectomy approach. Depending on the patient and the level of the vertebra, the distance and the angle of the horizontal drilling may range from 18 mm to 31 mm and from 15°° to 33°, respectively.

Conclusions:

For an optimum cervical oblique corpectomy that provides adequate spinal cord decompression and maintains spinal stability, it is necessary to operate under a surgical microscope positioned at an acute angle and to know the horizontal drilling distance.
The modified occipital condyle screw: A quantitative anatomic study investigating the feasibility of a novel instrumented fixation technique for craniocervical fusion
Authors: Dietz Nicholas , Gruter Basil Erwin , Haegler Joshua , Cho Samuel K. , Tubbs R. Shane , Spiessberger Alexander
Published: July 2023

Study Design:

Prospective human anatomical study.

Objective:

Occipitocervical fusion with occipital plate or condyle screws has shown higher failure rates in those with skeletal dysplasia. The modified occipital condyle screw connects the occipital condyle to the pars basilaris of the occipital bone that may achieve fortified bony purchase and serve as a more rigid fixation point. We evaluate anatomical feasibility of a novel cranial fixation technique designed to decrease risk of pseudarthrosis.

Materials and Methods:

Occipital condyles were analyzed morphologically using multiplanar three-dimensional reconstructed, ultra-thin section computed tomography. The following parameters were obtained: occipital condyle length, maximal cross section, location of hypoglossal canal, axial and sagittal orientation of the long axis, occipital condyle pedicle (OCP) diameter, maximal length of OCP screw, and entry point.

Results:

Forty patients with total of 80 occipital condyles were analyzed and the following measurements were obtained: occipital condyle length 24.1 mm (20.5–27.7, standard deviation [SD]: 2.2); condyle maximum axial cross-section 12.6 mm (9–15.8, SD: 1.9); length of OCP screw 38.9 mm (29.3–44, SD: 5.7); diameter of OCP 3.4 mm (3.2–3.6, SD: 0.2); clearance below hypoglossal canal 4.5 mm (3.4–7, SD: 1.1); and distance of screw entry point from condylar foramen 2 mm (range 0-4, SD 1.6).

Conclusion:

The modified occipital condyle screw connects the condyle with the clivus through the pars basilaris and represents a safe and technically feasible approach to achieve craniocervical fusion in skeletally mature individuals. This cephalad anchor point serves as an alternate fixation point of the occipitocervical junction with increased strength of construct and decreased risk of hardware failure or pseudarthrosis given cortical bone purchase and longer screw instrumentation.
Navigated versus conventional pediatric spinal deformity surgery: Navigation independently predicts reoperation and infectious complications
Authors: Katz Austen D. , Song Junho , Hasan Sayyida , Galina Jesse M. , Virk Sohrab , Silber Jeff Scott , Essig David , Sarwahi Vishal
Published: July 2023

Context:

Literature on treating pediatric spinal deformity with navigation is limited, particularly using large nationally represented cohorts. Further, the comparison of single-institution data to national-level database outcomes is also lacking.

Aim:

(1) To compare navigated versus conventional posterior pediatric deformity surgery based on 30-day outcomes and perioperative factors using the National Surgical Quality Improvement Program (NSQIP) database and (2) to compare the outcomes of the NSQIP navigated group to those of fluoroscopy-only and navigated cases from a single-institution.

Settings and Design:

Retrospective cohort study.

Subjects and Methods:

Pediatric patients who underwent posterior deformity surgery with and without navigation were included. Primary outcomes were 30-day readmission, reoperation, morbidity, and complications. The second part of this study included AIS patients < 18 years old at a single institution between 2015 and 2019. Operative time, length of stay, transfusion rate, and complication rate were compared between single-institution and NSQIP groups.

Statistical Analysis Used:

Univariate analyses with independent t-test and Chi-square or Fisher's exact test was used. Multivariate analyses through the application of binary logistic regression models.

Results:

Part I of the study included 16,950 patients, with navigation utilized in 356 patients (2.1%). In multivariate analysis, navigation predicted reoperation, deep wound infection, and sepsis. After controlling for operative year, navigation no longer predicted reoperation. In Part II of the study, 288 single institution AIS patients were matched to 326 navigation patients from the NSQIP database. Operative time and transfusion rate were significantly higher for the NSQIP group.

Conclusions:

On a national scale, navigation predicted increased odds of reoperation and infectious-related events and yielded greater median relative value units (RVUs) per case but had longer operating room (OR) time and fewer RVUs-per-minute. After controlling for operative year, RVUs-per-minute and reoperation rates were similar between groups. The NSQIP navigated surgery group was associated with significantly higher operative time and transfusion rates compared to the single-institution groups.
Top-ten most-cited articles on anterior column release in the context of minimally invasive lumbar interbody fusion
Authors: Gohel Paulomi , Patel Kevin P. , Lavadi Raj Swaroop , Fields Daryl P. , Agarwal Nitin , Alan Nima
Published: July 2023

Introduction:

Lateral anterior column release (ACR) is a minimally invasive option for the correction of sagittal plane deformity. To assemble a homogeneous picture of published research on ACR, an advanced bibliometric analysis was conducted to compile the top-ten most-cited articles on the topic of ACR.

Methods:

A keyword search using the Thomson Reuters Web of Knowledge was conducted to identify articles discussing the role of lateral ACR. The articles were then ranked based on the total number of citations to identify the ten most-cited articles published. A subjective appraisal of the findings of these articles was conducted to provide a ranked literature review and to examine trends in the study of ACR between 2012 and 2019.

Results:

The earliest published article on ACR was in 2012 by Deukmedjian et al. Three articles were in vitro biomechanical assessments of ACR, and seven articles were on outcome analyses, which were either case series or case controlled. The most-cited article was a biomechanical study authored by Uribe et al. The article with the highest rate of citations/year was authored by Manwaring et al. Uribe and the European Spine Journal were the most frequently cited author and journal, respectively.

Conclusions:

The lateral ACR approach has enjoyed significant scholarly attention since its advent. Higher-level analyses with robust control groups, larger sample sizes, and long-term follow-up are necessary to improve our understanding of this approach.
Patient-reported outcomes after posterior surgical stabilization for thoracolumbar junction fractures: A pilot study with combined patient-reported outcome measure methodology
Authors: Demetriades Andreas K. , Chowdhury Sirajam Munira , Mavrovounis Georgios
Published: July 2023

Background:

Thoracolumbar junction fractures (TLJFs) attract controversy for several parameters, including surgery versus conservative treatment, fusion versus stabilization, open versus percutaneous surgery, construct length, and downstream metalwork extraction.

Aims and Objectives:

The aim of this pilot study was to assess the effectiveness of surgical treatment in patients with burst (AO Classification Type A4) TLJFs using patient-reported outcome measures (PROMs) and evaluate and compare different PROMs in this clinical scenario.

Materials and Methods:

Patient records of consecutive patients who underwent posterior stabilization surgery for TLJFs were retrospectively reviewed. Data were collected on demographics, medical and social history, neurological examination, and postoperative complications. Telephone interviews and a combined PROM methodology (Numerical Rating Scale [NRS], EuroQol [EQ]-5D-5L, and Oswestry Disability Index [ODI]) were utilized to assess the effectiveness of intervention. Descriptive statistics were used to analyze exposure variables and outcome measures. Spearman's rank correlation was used for the outcome measures.

Results:

Thirteen patients were included. The mean age was 42 ± 16 years; the male: female ratio was 8:5; the mean follow-up was 18.9 ± 6.4 months. The mean NRS score was 3.3 ± 2.5, in line with a median score of 2 (2) on EQ-5D-5L pain/discomfort scale. Statistically significant correlations were found between several PROMs: pain-EQ-5D-5L and NRS (rs = 0.8, P = 0.002), pain-EQ-5D-5L and ODI (rs = 0.8, P = 0.001), usual anxiety/depression-EQ-5D-5L, and ODI (rs = 0.7, P = 0.008).

Conclusion:

A combined PROM methodology showed supportive evidence for safety and efficacy in the surgical stabilization of burst TLJFs. This alleviated significant pain and prevented neurological deficit and major disability. The preliminary widespread correlation between these PROMs supports further larger studies of their combined use in clinical practice, to measure the outcomes of spine trauma patients.
The impact of demineralized bone matrix characteristics on pseudarthrosis and surgical outcomes after posterolateral lumbar decompression and fusion
Authors: Heard Jeremy C. , Lee Yunsoo , Lambrechts Mark J. , Berthiaume Emily , D'Antonio Nicholas D , Bodnar John , Paulik John , Mangan John J. , Canseco Jose A. , Kurd Mark F. , Kaye I. David , Vaccaro Alexander R. , Kepler Christopher K. , Schroeder Gregory D. , Hilibrand Alan S.
Published: July 2023

Objectives:

The objectives of our study were to compare the fusion rates and surgical outcomes of lumbar fusion surgery based on the (1) type of demineralized bone matrix (DBM) carrier allograft, (2) the presence/absence of a carrier, and (3) the presence of bone fibers in DBM.

Methods:

Patients >18 years of age who underwent single-level posterolateral decompression and fusion (PLDF) between L3 and L5 between 2014 and 2021 were retrospectively identified. We assessed bone grafts based on carrier type (no carrier, sodium hyaluronate carrier, and glycerol carrier) and the presence of bone fibers. Fusion status was determined based on a radiographic assessment of bony bridging, screw loosening, or change in segmental lordosis >5°. Analyses were performed to assess fusion rates and surgical outcomes.

Results:

Fifty-four patients were given DBM with a hyaluronate carrier, 75 had a glycerol carrier, and 94 patients were given DBM without a carrier. DBM carrier type, bone fibers, and carrier presence had no impact on 90-day readmission rates (P = 0.195, P = 0.099, and P = 1.000, respectively) or surgical readmissions (P = 0.562, P = 0.248, and P = 0.640, respectively). Multivariable logistic regression analysis found that type of carrier, presence of fibers (odds ratio [OR] = 1.106 [0.524–2.456], P = 0.797), and presence of a carrier (OR = 0.701 [0.370–1.327], P = 0.274) were also not significantly associated with successful fusion likelihood.

Conclusion:

Our study found no significant differences between DBM containing glycerol, sodium hyaluronate, or no carrier regarding fusion rates or surgical outcomes after single-level PLDF. Bone particulates versus bone fibers also had no significant differences regarding the likelihood of bony fusion.
Spatial Computing for preoperative planning and postoperative evaluation of single-position lateral approaches in spinal revision surgery
Authors: Elsayed Galal A. , Lavadi Raj Swaroop , Pugazenthi Sangami , Jaikumar Vinay , Mitha Rida , Hafez Daniel M. , Ogunlade John O. , Agarwal Nitin
Published: July 2023

Spatial computing (SC) in a surgical context offers reconstructed interactive four-dimensional models of radiological imaging. Preoperative and postoperative assessment with SC can offer more insight into personalized surgical approaches. Spine surgery has benefitted from the use of perioperative SC assessment. Herein, we describe the use of SC to perform a perioperative assessment of a revision spinal deformity surgery. A 79-year-old wheelchair-bound male presented to the neurosurgery clinic with a history of chronic lumbar pain associated with bilateral lower extremity weakness. His surgical history is significant for an L2-L5 lumbar decompression with posterior fixation 1 year prior. On examination, there were signs of thoracic myelopathy. Imaging revealed his previous instrumentation, pseudoarthrosis, and cord compression. We perform a two-staged operation to address the thoracic spinal cord compression and myelopathy, pseudoarthrosis, and malalignment with a lack of global spinal harmony. His imaging is driven by a spatial computing and SC environment and offers support for the diagnosis of his L2-3 and L4-5 pseudoarthrosis on the reconstructed SC-based computed tomography scan. SC enabled the assessment of the configuration of the psoas muscle and course of critical neurovascular structures in addition to graft sizing, trajectory and approach, evaluation of the configuration and durability of the anterior longitudinal ligament, and the overlying abdominal viscera. SC increases the familiarity of the patient's specific anatomy and enhances perioperative assessment. As such, SC can be used to preoperatively plan for spinal revision surgery.
Unilateral facet fixation as a salvage procedure: Report of two cases with cervical primary bone tumors with extensive bone destruction
Authors: Shah Abhidha , Prasad Apurva , Vutha Ravikiran , Goel Atul
Published: July 2023

We describe cases of two patients with primary cervical bone tumors that resulted in extensive destruction of bones of the region. In the first patient, the tumor and its growth resulted in the destruction of C3–C5 vertebral bodies and the unilateral destruction of facets and pedicles. In the second case, there was focal destruction of the body and odontoid process and unilateral pedicle and facet of C2. Tumor resection and spinal stabilization were the aims of the surgery. In both cases, unilateral fixation of facets was done. In the first patient, multi-segmental transarticular fixation by Camille's technique was done, and in the second patient, unilateral lateral mass plate and screw fixation was done by the Goel technique. Solid bone fusion of spinal segments was observed at more than a 2-year follow-up in both cases. Based on this experience, it appears that unilateral facetal fixation can provide firm stability and can be used when other more frequently and popularly used techniques are either not available or possible.
Basilar invagination associated with brainstem tumor opposite the odontoid process
Authors: Shah Abhidha , Vutha Ravikiran , Goel Atul
Published: July 2023

An 8-year-old girl presented with the symptom of nasal regurgitation and hoarseness of voice. Investigations revealed severe basilar invagination and a large intra-axial pons-medulla brainstem tumor adjoining the tip of the odontoid process. The child underwent lateral mass plate and screw atlantoaxial fixation and attempted craniovertebral junction realignment. Biopsy of the brainstem tumor was done during the same surgical procedure. Histology of the brainstem tumor revealed it to be a pilocytic astrocytoma. Simultaneous presence of brainstem tumor and basilar invagination is a rare clinical association and a complex therapeutic challenge. The possible cause of genesis of brainstem tumor in an unusual location is speculated.
Morphophysiology of passion-fruit seedlings in different substrates under different strategies of irrigation with brackish water
Authors: Lessa Carla Ingryd Nojosa , Sousa Geocleber Gomes de , Sousa Henderson Castelo , Lacerda Claudivan Feitosa de , Silva Alexsandro Oliveira da , Guilherme José Marcelo da Silva
Published: July 2023

The presence of salts in the irrigation waters of the semiarid region negatively affects the production of seedlings. Thus, substrates based on carbonized rice husk are an alternative for production in saline environments, associated with irrigation management strategies with brackish water. This study evaluated the physiological responses of yellow passion-fruit seedlings as a function of irrigation strategies with brackish water in different substrates. The study was developed at the Universidade da Integração Internacional da Lusofonia Afro-Brasileira, Redenção, Ceará. The design was entirely randomized, in a 2 × 5 factorial scheme with two substrate compositions (S1 - soil; S2 – sandy soil, sand and carbonized rice husk - 1:1:1 – volume basis) and five irrigation strategies with brackish water (IS1 - low salinity water during the entire cycle 1-65 days after sowing (DAS); and salt stress initiation at: IS2 - 11 DAS; IS3 - 16 DAS; IS4 - 21 DAS; IS5- 26 DAS), with five repetitions. Soil as a substrate was efficient for photosynthesis and chlorophyll. It also provided better results for transpiration, stomatal conductance and leaf area regardless of the strategy. Internal carbon concentration and water use efficiency were higher in soil associated with saline stress at 11, 16 and 21 DAS. Under the same substrate, the stem diameter of the seedlings was greater when irrigated with lower salinity during the phase. The substrate composed of carbonized rice is associated with greater seedling height and increased leaf temperature.

Keywords: plant physiology, Passiflora edulis, salinity, substrate.
Modeling Alex Hurricane: flood map simulation applying Multisensor grid precipitation, Monterrey, Mexico
Authors: Stella Juan M.
Published: July 2023

A simulation was carried out in the Santa Catarina River watershed, located in the State of Nuevo Leon, Mexico, to study flood patterns and velocity maps during the occurrence of Hurricane Alex in June-July 2010. To conduct this simulation, a two-dimensional model of the Santa Catarina River Watershed was employed using the HEC-RAS software. The model was driven by Multisensor grid precipitation data as input. Land cover and soil layers were utilized in order to obtain various parameters within the watershed, such as Curve Number, Manning Number, Abstraction Ratio, Infiltration Rate, and Percent of Impervious Land. The simulated water levels were calibrated by comparing them with observed values at the Cadereyta Hydrometric Station, which is located near the city of Monterrey. The utilization of the HEC-RAS two-dimensional model combined with Multisensor grid precipitation demonstrates that this particular model is easy to set up and is user-friendly. Moreover, the model exhibits stability and possesses the ability to accurately simulate flood patterns and velocity maps within the watershed.

Keywords: Floodmap, HEC-RAS 2D, Mexico, Monterrey, MRMS-QPE.
Event Data Recorder - Retrieval Tool Protocol
Authors:   Event Data Recorder Committee
Published: July 2023

This SAE Recommended Practice utilizes existing industry standards to identify a common physical interface and define the protocols necessary to retrieve records stored by light duty vehicle event data recorders (EDRs). To accomplish this, the SAE J1962 diagnostic connector is designated as the primary physical interface for EDR retrieval tools.

This SAE Recommended Practice is intended to be used for the development of EDR retrieval tools. Retrieval tools are intended to interface with light duty vehicles and to produce EDR record reports with data element formats specified by SAE J1698-1.

Limitations:

This SAE Recommend Practice specifies how EDR records should be imaged, translated, and reported by EDR retrieval tools. It does not specify how EDR records are recorded and stored by individual vehicles.

This SAE Recommended Practice addresses EDR record retrieval (including imaging and translating) via the connection to the vehicle’s SAE J1962 connector or via direct connection to an electronic control unit (ECU) containing an EDR record. Direct connection to an ECU may require the use of specialized interface adapters.
THIẾT KẾ VÀ PHÂN TÍCH CƠ CẤU MỀM THAY ĐỔI CHUYỂN ĐỘNG TỊNH TIẾN THÀNH CHUYỂN ĐỘNG XOAY DỰA TRÊN VI CƠ CẤU TRUYỀN ĐỘNG TĨNH ĐIỆN RĂNG LƯỢC
Authors: NGÔ TIẾN HOÀNG
Published: July 2023

Một cơ cấu mềm có khả năng thay đổi linh hoạt chuyển động tịnh tiến thành chuyển động tròn xoay được nghiên cứu để ứng dụng trong hệ thống vi cơ điện tử (MEMS). Phương pháp để đạt được sự biến đổi chuyển động này là do sự sắp xếp đối xứng cùa hai đầu vào chuyển động tuyến tính. Chuyển động tính tiến này được cung cấp bởi cơ cấu truyền động comb-drive được sắp xếp đối xứng nhau và được treo bởi hệ thống các lò xò đối xứng. Sự chuyển động tịnh tiến được hình thành bởi lực tĩnh điện giữa răng lược di chuyển (movable comb-drive) đóng vai trò cực âm V_- và răng lược cố định (fixed comb-drive) đóng vai trò cực dương V_+. Để đạt được một tỷ số biến đổi (transduction ratio) của chuyển động xoay tròn so với chuyển động tịnh tiến, thuật toán giải thuật di truyền NSGA-II (Genetic Algorithm) được sử dụng để tối ưu hóa thiết kế cho đường cong tham số Bézier. Trong nghiên cứu này, vật liệu tổng hợp (composite materials) bao gồm một lớp kim loại và lớp Silicon dioxide 〖SiO〗_2 phủ trên và dưới bề mặt lớp kim loại được sử dụng để chế tạo cơ cấu mềm này. Với sự đột phá trong MEMS, cơ cấu mềm này có thể được sử dụng trong một số các ứng dụng vi quang học như bộ chuyển mạch quang học, đo đạc các nhiễu xạ, bộ giảm cường độ quang học, v.v… Phân tích phần tử hữu hạn (FEA) được thực hiện để dự đoán các hành vi của cơ cấu. Tỷ số truyền biến đổi chuyển động đạt được xấp xỉ khoảng 1.2 độ/µm. Để đáp ứng cho việc gia công chế tạo, cơ cấu mềm tích hợp mạch điện điều khiển sẽ được thiết kế trên phần mềm Cadence Virtuoso. Dựa vào các kết quả mô phỏng cho thấy sự dịch chuyển theo phương z (out-of-plane) tại vi trí đĩa xoay là rất nhỏ, điều này chứng tỏ cơ cấu không bị  xoắn, võng khi điện áp được đặt vào. Ngoài ra, ứng suất sinh ra trong cơ cấu mềm nhỏ hơn rất nhiều so với ứng suất cho phép của vật liệu. Một hệ thống thí nghiệm được trình bày để xác định khả năng làm việc của cơ cấu.
MỘT SỐ GIẢI PHÁP NÂNG CAO HIỆU SUẤT CỦA HỆ THỐNG LÒ HƠI CÔNG NGHIỆP SỬ DỤNG NHIÊN LIỆU RẮN HOẶC KHÍ
Authors: NGUYỄN THANH QUANG
Published: July 2023

Lò hơi công nghiệp đốt nhiên liệu rắn và khí được sử dụng rộng rãi để cung cấp hơi bão hòa cho quá trình sản xuất. Việc sử dụng nhiên liệu rắn có thành phần và độ ẩm khác nhau ảnh hưởng lớn đến hiệu suất và chi phí sản xuất nhiệt. Bài báo trình bày nghiên cứu quá trình trao đổi nhiệt trong lò hơi cho nhiên liệu độ ẩm cao là sinh khối và than nâu Indonesia và đề xuất một số giải pháp kỹ thuật nhằm nâng cao hiệu suất. Kết quả cho thấy, lò hơi áp suất 8 bar đốt sinh khối, tiêu hao nhiêu liệu tăng từ 200 lên 350 kg/ tấn hơi với độ ẩm 10% và 40% và tăng nhanh khi độ ẩm > 40%, mức ẩm hợp lý là < 20 %. Hiệu suất lò giảm đến 10% khi độ ẩm chênh lệch 30%. Đối với than, hiệu suất lò giảm 1,2%, tiêu hao nhiên liệu tăng khoảng 10% khi độ ẩm tăng 5%. Thu hồi nhiệt khi đốt khí tự nhiên là 9,63% và khí hóa lỏng là 8,18%. Kết quả đạt được là cơ sở tham khảo cho hệ thống lò hơi công nghiệp hiện có ở Việt Nam, góp phần tăng hiệu quả sử dụng nhiệt và giảm chi phí sản xuất hơi.
NGHIÊN CỨU ĐÁNH GIÁ CÁC MÔ HÌNH TRONG CHẨN ĐOÁN SỰ CỐ TRONG HỆ THỐNG CHILLER
Authors: TRẦN ĐÌNH ANH TUẤN
Published: July 2023

Một mô hình tham số đặc tính chính xác sẽ có vai trò then chốt trong việc nâng cao tỷ lệ chính xác của quá trình phát hiện và chẩn đoán lỗi trong hệ thống chiller. Vì vậy trong nghiên cứu này đã thực hiện so sánh đánh giá 3 phương pháp MLR, GRNN và RBFNN đóng vai trò là mô hình tham số để mô hình hóa các đặc tính hoạt động của chiller. Hai chỉ số thống kê là R2 và RMSE được sử dụng là tiêu chí đánh giá mô hình ở giai đoạn huấn luyện mô hình. Sau đó, kết hợp với phương pháp t-test  cùng với quy luật chẩn đoán để nghiên cứu khảo sát và đánh giá khả năng phát hiện chẩn đoán của 3 mô hình. Bộ dữ liệu thực nghiệm thường được sử dụng hầu hết cho hướng nghiên cứu phát hiện chẩn đoán sự cố trong hệ thống chiller của ASHRAE RP-1043 đã được sử dụng trong nghiên cứu này. Nghiên cứu tiến hành khảo sát đánh giá 3 mô hình với 3 trường hợp tiêu biểu là “Chiller hoạt động bình thường” và 2 sự cố thường xuất hiện trong hệ thống chiller “Thiếu môi chất lạnh”, “Tắc thiết bị ngưng tụ”. Kết quả của nghiên cứu cho thấy rằng, RBFNN và GRNN là một chiến lược rất thiết thực và có độ chính xác cao.