bluuebunny/crossref_metadata_2025 huggingface dataset:
Numerical Investigation of a Turbulent High-Speed Flow Separating from a Deforming Cantilever Plate
Authors: Thayer Jordan D. , McNamara Jack J. , Gaitonde Datta V.
Published: February 2023

Deep understanding of multiscale nonlinear phenomena, such as shocks, turbulent flow, and separation, is critical for the accurate and efficient treatment of high-speed fluid–structural interactions. To better characterize the principal issues, a numerical investigation is performed of the response of a Mach 2.0 flow to prescribed motion of a cantilever plate. The main features of the flow are separation at the end of the plate and re-attachment on the downstream floor, which are modulated by shear layer instabilities and interactions with the cavity beneath the plate. The influence of structural motions on the fluid dynamics is investigated through forced simple harmonic oscillations of the cantilever in three different dynamic modal states of a plate. The potential impact of flow resolution on energy transfer is assessed by comparing unsteady Reynolds-averaged Navier–Stokes (URANS) and large-eddy simulation (LES). Spectral and modal analyses are conducted to baseline the multiscale dynamics of the rigid configuration, revealing low-frequency fluid dynamics on the order of typical structural response scales. First examined is the oscillation of the cantilever in the first streamwise bending mode at the same frequency as the baseline low-frequency fluid dynamics. Second, the flow response to two-dimensional structural oscillations is studied by forcing the cantilever in a combination of the first streamwise bending and first spanwise torsional modes. For these, the URANS method compares reasonably well with the LES result for asymptotic time-averaged flow features. However, the associated integrated aeroelastic forces are underpredicted by the URANS by approximately 15% due to a longer separation length prediction. In the third motion, the potential for energy transfer through the broadband scales in the incoming boundary layer to high-frequency structural modes to the shear layer is examined by forcing the cantilever with a low-amplitude oscillation at a frequency on the order of the shear layer scales. This is observed as a mechanism to enhance the turbulence level of the shear layer scales and alter the time-averaged separation length. However, the mean integrated aeroelastic force is only marginally impacted for the amplitudes considered, with increases of 5% or less.
Riblet Performance Beneath Transitional and Turbulent Boundary Layers at Low Reynolds Numbers
Authors: Malathi Ananth Sivaramakrishnan , Vaid Aditya , Rao Vadlamani Nagabhushana , Nardini Massimiliano , Kozul Melissa , Sandberg Richard D.
Published: February 2023

Several high-resolution scale-resolving simulations are carried out to examine the effect of riblets on the mean and turbulent statistics of a zero-pressure-gradient boundary layer. The Reynolds number is chosen such that the riblets are exposed to both the transitional and turbulent regimes of the boundary layer. This is in contrast to the turbulent channel flow or fully turbulent boundary layers studied in the literature. The boundary layer is subjected to freestream turbulence and roughness tripping. The transition process and the extent of the turbulent regime on the riblets are altered by tripping the boundary layer with an isolated hemispherical roughness element. The influence of the riblets on the transition onset and the viscous drag reduction is demonstrated through time-averaged, phase-averaged, and instantaneous flow quantities. The effect of the V-shaped riblets with both sharp and curved tips (and valleys) is also explored. With riblets, the viscous drag in the turbulent regime is reduced by 4–6% when compared to a smooth surface, and the efficacy of sharp V-shaped riblets is shown to be marginally higher than for the curved riblets. In the transitional flow regime, the coherent structures over riblets are predominantly spanwise oriented. In particular, a separated shear layer forms over the riblet leading edge as the flow encounters an abrupt surface transition from the smooth surface onto the riblets. A leading-edge ramp is shown to effectively minimize the additional spurt in the turbulent kinetic energy and the associated losses incurred due to this abrupt surface change.
Crack Identification in Solid Rocket Motors Through the Neyman–Pearson Detection Theory
Authors: Cholevas Nicholas , Anyfantis Konstantinos N. , Mußbach Günter , Korompili Georgia , Riziotis Christos
Published: February 2023

Solid rocket motors (SRMs) are prone to bore cracking due to material degradation mechanisms and temperature changes that occur during storage and service life, and therefore early damage detection is of crucial importance. Structural health monitoring (SHM) strategies aim at measuring the load redistribution caused by a crack through embedded strain sensors. By acknowledging the existence of uncertainties, both in the material and measurement systems, this work employs a Neyman–Pearson detector that treats the crack identification problem as a binary statistical pattern recognition one. A typical SRM geometry, at its healthy state and with a bore crack of variable size, is considered in a probabilistic computational setting. A surrogate model is trained with synthetic data generated from a physics-based finite element model and then used for uncertainty propagation. Detection is first treated as a deterministic signal within noise, and next as an uncertain signal described by a probabilistic distribution. The system’s architecture is assessed through a procedure for arriving at the optimal number and location for sensor placement in conjunction with the SHM’s detection performance. The latter is described by receiver operating characteristic curves.
Experimental Study of Dynamic Icing Process on a Pitot Probe Model
Authors: Hu Haiyang , Al-Masri Faisal , Tian Linchuan , Hu Hui
Published: February 2023

An experimental study was conducted to characterize the dynamic ice accretion process over the surface of a typical aeronautic Pitot probe model under different icing conditions. The experimental study was conducted in the Icing Research Tunnel available at Iowa State University. While a high-speed imaging system was used to record the dynamic ice accretion process, a three-dimensional (3D) scanning system was also used to measure the 3D shapes of the ice layers accreted on the test model. While opaque and grainy ice structures were found to accrete mainly along the wedge-shaped lip of the front port and over the front surface of the probe holder under a dry rime icing condition, much more complicated ice structures with transparent and glazy appearance were observed to cover almost entire surface of the Pitot probe under a wet glaze icing condition. While a flower-like ice structure was found to grow rapidly along the front port lip, multiple irregular-shaped ice structures accreted over the probe holder under a mixed icing condition. The characteristics of the icing process under different icing conditions were compared in terms of 3D shapes of the ice structures, the profiles of the accreted ice layers, the ice blockage to the front port, and the total ice mass on the Pitot probe model. The acquired ice accretion images were correlated with the 3D ice shape measurements to elucidate the underlying icing physics.
New data on the genus Belyta Jurine, 1807 (Hymenoptera: Diapriidae, Belytinae) from Iran
Authors:   Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran, Izadizadeh M. , Talebi A.A. ,   Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran, Chemyreva V.G. ,   Zoological Institute, Russian Academy of Sciences, St. Petersburg, Russia, Farahani S. ,   Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization, Tehran, Iran, Kazerani F. ,   Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization, Tehran, Iran, Ameri A. ,   Insect Taxonomy Research Department, Iranian Research Institute of Plant Protection, Agricultural Research, Tehran, Iran
Published: February 2023

The genus Belyta Jurine, 1807 (Hymenoptera: Diapriidae) is studied in northern Iran. The specimens were collected using Malaise traps in the Alborz, Golestan, Gilan, Mazandaran and Qazvin Provinces during 2010–2018. The seven species of Belyta are recorded from Iran for the first time, Belyta abrupta Thomson, 1858, B. bicolor Jurine, 1807, B. depressa Thomson, 1858, B. elongata Thomson, 1858, B. rugosicollis Kieffer, 1909, B. sanguinolenta Nees, 1834 and B. validicornis Thomson, 1858. Diagnostic characters, illustrations, geographical distributions, and a key to Iranian species are provided.
مهارات القرن الحادي والعشرين المضمنة في مقرر المهارات الحياتية والتربية الأسرية للمرحلة الثانوية
Authors: الزبيدي أماني هاشم , العرفج عبير محمد
Published: February 2023

هدف البحث الحالي إلى الكشف عن درجة تضمين مهارات القرن الحادي والعشرين في مقرر المهارات الحياتية والتربية الأسرية للمرحلة الثانوية. واستخدم البحث المنهج الوصفي مُتمثلًا بأسلوب تحليل المحتوى؛ لحساب درجة تضمين مهارات القرن الحادي والعشرين في الأهداف والأنشطة وأسئلة التقويم الواردة في المقرر. ولهذا الغرض أعدت الباحثة بطاقةً لتحليل المحتوى اشتملت على ثلاثة مجالات رئيسة لمهارات القرن الحادي والعشرين -كما جاءت في منظمة الشراكة من أجل مهارات القرن الحادي والعشرين- توزعت كالآتي: مهارات التعلم والإبداع، ومهارات الثقافة الرقمية، ومهارات المهنة والحياة، وقد تضمنت (71) مؤشرًا. وتوصلَت النتائج إلى أن مُتوسط النسبة المئوية لدرجة تضمين مهارات القرن الحادي والعشرين في مقرر المهارات الحياتية والتربية الأسرية للمرحلة الثانوية بلغ (33.33%) بدرجة توافر منخفضة، حيث بلغت النسبة المئوية لدرجة تضمين مهارات القرن الحادي والعشرين في أهداف المقرر (13.08%) بدرجة توافر منخفضة جدًا، وبلغت النسبة المئوية لدرجة تضمين مهارات القرن الحادي والعشرين في أنشطة المقرر (48.31%) بدرجة توافر متوسطة، وبلغت النسبة المئوية لدرجة تضمين مهارات القرن الحادي والعشرين في أسئلة التقويم الواردة في المقرر (37.82%) بدرجة توافر منخفضة. وفي ضوء النتائج قدمت الباحثة مجموعة من التوصيات، وأهمها: ضرورة توجيه عناية الخُبراء التربويين والقائمين على تخطيط المناهج إلى إعادة النظر في محتوى مقرر المهارات الحياتية والتربية الأسرية للمرحلة الثانوية بحيث يتم معالجة تضمين مهارات القرن الحادي والعشرين في المقرر وتنظيمها وتحسينها، ومعالجة تفاوت نسب المهارات المتضمنة فيها.
درجة توافر منحى العلم والتقانة والمجتمع والبيئة (STSE) في مناهج العلوم بسلطنة عمان
Authors: الرمحي حمود سليمان سيف , البادري أحمد حميد محمد
Published: February 2023

هدفت الدراسة التعرف على درجة توافر منحى العلم والتقانة والمجتمع والبيئة (STSE) في مناهج العلوم من سلسلة كامبريدج الدولية المطبقة في الحلقة الثانية من التعليم الأساسي بسلطنة عمان، ومدى اختلاف هذه الدرجة بين الصفوف، تكونت عينة الدراسة من مناهج العلوم للصفوف8-5، المقررة لطلبة التعليم الأساسي للعام الدراسي 2021/2022، وللإجابة عن أسئلة الدراسة استخدم الباحثان المنهج التحليلي، وأعد بطاقة تحليل المحتوى، تكونت في صورتها النهائية من(30) مؤشرا موزعة على ستة مجالات رئيسة لمنحى العلم والتقانة والمجتمع والبيئة وهي: الآثار الإيجابية للعلم والتقانة في المجتمع والبيئة، والآثار السلبية للعلم والتقانة في المجتمع والبيئة، وأثر المجتمع في العلم والتقانة، وأثر العلم والتقانة في حل المشكلات البيئية، والعلاقات المتبادلة بين العلم والتقانة، ومحددات كل من العلم والتقانة، واعتمد الموضوع (الدرس) كوحدة للتحليل، وللتحقق من صدق الأداة تم عرضها على عدد من المحكمين المختصين، أما ثباتها فتم عن طريق حساب معامل الثبات لـ " Holisti " بين ثلاثة محللين لعينة من موضوعات المناهج المحللة، وكشفت النتائج عن: توافر المنحى بنسبة (16.3%)، وهي تعتبر نسبة ضعيفة، لأهمية المنحى التربوية ولكونه من أبعاد الثقافة العلمية، كما كشفت تفاوت توزيع مجالات المنحى في مناهج الصفوف العينة، ووجود دلالة إحصائية تؤكد على اختلاف توافر المنحى في مناهج الصفوف المحللة. وأوصت الدراسة في ضوء تلك النتائج بأهمية تضمين مجالات المنحى ومؤشراته عند تطوير مناهج العلوم لمراحل التعليم الأساسي، وتوزيع نسب توافره توزيعا شاملا ومتزنا في موضوعات مناهج العلوم.
بناء أداة لقياس الاتجاه نحو التعلم عن بُعد وتطبيقها على عينة من طلبة جامعة مؤتة
Authors: المواضية حنين لافي زعل , المواضية نوفه سميح كامل
Published: February 2023

هدفت هذه الدراسة إلى بناء أداة لقياس الاتجاه نحو التعلم عن بُعد وتطبيقها على عينة من طلبة جامعة مؤتة، وتكونت عينة الدراسة من (500) طالباً وطالبة من جامعة مؤتة، تم اختيارهم من خلال أسلوب العينة المتاحة في ظل جائحة كورونا. وتم استخدام أداة القياس والذي تكونت بصورتها النهائية من (46) فقرة موزعة على خمسة أبعاد. وأشارت النتائج أنه يوجد فروق ذات دلالة إحصائية في الاتجاه نحو التعلم عن بُعد تُعزى لمتغير الكلية ولصالح الكليات الإنسانية. كما أظهرت النتائج بأن دلالات صدق وثبات أداة قياس الاتجاه نحو التعلم عن بُعد كان مرتفعاً. وأشارت النتائج أيضا بأن اتجاهات الطلبة نحو التعلم عن بُعد في جامعة مؤتة كان ايجابياً وبدرجة متوسطة وأنه لا يوجد فروق ذات دلالة إحصائية في الاتجاه نحو التعلم عن بُعد تُعزى لمتغير الجنس. وفي ضوء هذه الدراسة توصلت الباحثتان إلى مجموعة من التوصيات من بينها: البحث عن أساليب إحصائية جديدة لمعرفة دلالات صدق وثبات أداة قياس التعلم عن بُعد.
Perumusan Karakteristik Fisik Peri Urban Primer di Kota Banjarmasin
Authors: Uzma Syarfiatul , Ridhoni Miftahul , Caesarina Hanny Maria
Published: February 2023

Wilayah peri urban merupakan wilayah yang memiliki karakteristik kekotaan dan kedesaan. Wilayah Peri urban memiliki karakteristik pertambahan penduduk dan kepadatan penduduk yang tinggi, sektor ekonominya yang didominasi non-pertanian, dan kesadaran penduduk sebagai penduduk kota pada daerah tersebut. Adanya interaksi yang terjadi dengan wilayah kota maupun desa dapat mempengaruhi perkembangan wilayah peri urban. Perkembangan tersebut dapat menimbulkan perkembangan dan pembangunan wilayah yang tidak terarah dan terkendali. Kota Banjarmasin merupakan perkotaan yang mengalami pertumbuhan terutama sektor perdagangan dan jasa dan Kawasan permukiman.  Merujuk dari Teori Singh (2011) yang membagi 3 klasifikasi peri urban, yaitu peri urban primer (ciri kekotaan lebih mendominasi), peri urban sekunder (ciri kekotaan dan kedesaan saling mempengaruhi) dan rural peri urban (ciri kedesaan lebih mempengaruhi). Lokasi penelitian ini adalah kelurahan yang berada di Kota Banjarmasin yang berbatasan langsung dengan kabupaten/kota lain disekitarnya. Tujuan dari penelitian ini adalah perumusan karakteristik peri urban primer berdasarkan aspek fisik di Kota Banjarmasin. Metode yang digunakan dalam penelitian ini adalah analisa deskriptif terhadap penelitian terdahulu dan metode expert judgement (pendapat para ahli). Variabel karakteristik fisik peri urban primer yang didapakan berupa karakteristik pemanfaatan lahan pertanian, kepadatan bangunan, persentase permukiman dan persentase jalan aspal. Karakteristik fisik yang didapat kemudian akan di lakukan verifikasi kepada narasumber ahli untuk menguji variable dan memilih karakteristik yang paling banyak dipilih oleh narasumber ahli yang bisa diterapkan di Kota Banjarmasin. Dari rangkaian analisis yang dilakukan, diperoleh kesimpulan bahwa terdapat 4 (empat) karakteristik fisik peri urban primer yang dapat diterapkan di Kota Banjarmasin, yaitu karakteristik pemanfaatan lahan pertanian, kepadatan bangunan, persentase permukiman dan persentase jalan aspal.
Synthesis, Structure, and Reactivity of a Gallylene Derivative Bearing a Phenalenyl-Based Ligand
Authors: Kodama Takuya , Mukai Nijito , Tobisu Mamoru
Published: February 2023

Phenalenyl-based N,N-bidentate ligand-stabilized monovalent gallium(I) 1 was synthesized and characterized. Compound 1 promotes the oxidative addition of I-I, Si-Cl, C-I, and S-S bonds and oxidative cyclization with various Pi-components. Compound 1 can also coordinate to a tungsten complex to form a gallium-tungsten bond.
Lithium-mediated mechanochemical cyclodehydrogenation
Authors: Fujishiro Kanna , Morinaka Yuta , Ono Yohei , Tanaka Tsuyoshi , Scott Lawrence , Ito Hideto , Itami Kenichiro
Published: February 2023

Cyclodehydrogenation is an essential synthetic method for the preparation of polycyclic aromatic hydrocarbons, polycyclic heteroaromatic compounds, and nanographenes. Among the many examples, anionic cyclodehydrogenation using potassium(0) has attracted synthetic chemists because of its irreplaceable reactivity and utility in obtaining rylene structures from binaphthyl derivatives. However, existing methods are difficult to use in terms of practicality, pyrophoricity, and lack of scalability and applicability. Herein, we report the development of a lithium(0)-mediated mechanochemical anionic cyclodehydrogenation reaction for the first time. This reaction could be easily performed using a conventional and easy-to-handle lithium(0) wire at room temperature, even under air, and the reaction of 1,1-binaphthyl is complete within 30 min to afford perylene in 94% yield. Using this novel and user-friendly protocol, we investigated substrate scope, reaction mechanism, and gram-scale synthesis. As a result, remarkable applicability and practicality over previous methods, as well as limitations, were comprehensively studied by computational studies and NMR analysis. Furthermore, we demonstrated two-, three-, and five-fold cyclodehydrogenations for the synthesis of novel nanographenes. In particular, quinterrylene ([5]rylene or pentarylene), the longest non-substituted molecular rylene, was synthesized for the first time.
Christological Ecclesiology & Reconciliation
Authors: Retallick Shaun
Published: February 2023

This article explores the Catholic Church’s response to Canada’s Indian Residential School system; namely, how it has chosen to frame and understand its role and responsibility in the harm inflicted upon indigenous persons and communities. The predominant approach has been to spare the Catholic Church itself of culpability while focusing on that of individual Catholics and institutions (e.g., dioceses and religious orders). At the root of this perspective appears to be the distinction between the Church, which is holy, and her members, who are sinners. This article, however, argues that this view is insufficient in light of a christological ecclesiology: Church institutions and members form one body in Christ with two natures, divine and human, which should neither be divided nor confused. With this view in mind, it is argued that reconciliation efforts can and should be made on behalf of not only individual Catholics and institutions, but the Catholic Church as a whole.
A Rare Presentation of Salmonella typhi Meningitis in a Seven Month Old Infant
Authors: Dingore Vaishnavi , Limaye Kashmira , Sane Sudhir
Published: February 2023

Salmonella typhi is a gram negative bacillus known to cause enteric fever in all age groups especially children. Meningitis caused by S. typhi is a rare phenomenon and is mainly seen in infants. We report a case of typhoid meningitis in a previously healthy seven month old male infant.
Acute Lymphoblastic Leukemia, Invasive Aspergillus Fungal Pneumonia and Complications: A Pandora’s Box
Authors: L Rokade M
Published: February 2023

Acute lymphoblastic leukemia is a malignancy associated with overproduction of immature lymphocyte population. There is a progressive replacement of bone marrow and other lymphoid organs by abnormal cells. The common symptoms include fatigue bruising spontaneous bleeding and infections. This is more common in children. A patient with leukemia is at an increased risk for infections both as a result of disease itself and due to complications associated with chemotherapy. Neutropenia is the major determinant for development of infections. Radiologic lsquoHalo signrsquo is characteristically observed in angio-invasive fungal pneumonia. Early institution of antifungal regimen based on this sign results in improved outcomes.Multiple complications are observed in leukemia such as development of vascular aneurysms hemorrhagic complications cellular infiltration and tumor cell lysis syndrome. Radiology plays an important role in the early diagnosis and guided interventions. A multidisciplinary approach results in improved outcomes.
Ergonomics and Undergraduate Dental Students - A Knowledge, Attitude and Practice Study
Authors: M Remya , Varughese Anju , Sarah John Ashley , Subramanian Deepthy , Chandran Pallavi
Published: February 2023

Background and aim Musculoskeletal disorders are common among dental practitioners reducing their productivity work quality and often leading to early retirement from practice. The application of ergonomic principles will help to reduce these work-related musculoskeletal disorders. Therefore it is critical to teach dental students at the undergraduate level about ergonomic principles. The study aimed to assess the knowledge attitude and practice towards ergonomics among undergraduate dental students.Methods A questionnaire-based cross-sectional study was conducted among 183 undergraduates third years final years and house surgeons using a predesigned self-administered questionnaire. The questionnaire consisted of 25 questions of which 16 questions were related to knowledge five questions were related to attitude and four were related to practice. The data collected were statistically analyzed using SPSS software version 20 and group comparison was done using the Chi-square test.Results Only one-third of the participants had fair knowledge regarding ergonomics. 66 of students showed a positive attitude which shows that students are willing to embrace ergonomic principles in their routine clinical activities. Around 37.1 students demonstrated good practice. Knowledge and practice were found significantly correlated with age and academic year of the students.Conclusion Dental students showed limited knowledge regarding the principles of ergonomics in the present study. Institutions should conduct educational programs to increase awareness about ergonomics and more emphasis should be given to the practical implementation of these in their clinical practice.
Triage of Pediatric Dengue Disease Cases at KBNIMS Kalaburagi Outpatient Clinic – A Retrospective Observation Study
Authors: Chengty Siddaling , Uplaonkar Vinod
Published: February 2023

Background and aim Dengue infection is a systemic and dynamic disease that is complex in its manifestations. However managing it is relatively straightforward inexpensive and effective in saving lives if appropriate and timely measures are taken. This study aimed to define case severity based on clinical features a simple tourniquet test that can be performed easily at the OPD level laboratory parameters USG findings and particularly the inferior vena cava IVC collapsibility index.Material and Methods A retrospective observational study involving 80 paediatric dengue patients presenting to OPD at Khaja Banda Nawaz Teaching and General Hospital Kalaburagi from Dec 2019 to July 2021 was conducted.Results Out of 80 patients 51 63 patients presented with features of dengue fever 25 31 patients presented with Dengue Haemorrhagic Fever DHF and 4 5 patients presented with Dengue Shock Syndrome DSS. Thirty six patients 71 with dengue fever were managed on an OPD basis and 15 29 were managed in OPD day-care. Twenty nine patients 36 showing features of DHF and DSS were hospitalised.Conclusion This study showed that a well-managed front-line response reduces hospital admissions and complications. Ultrasound examination helps identify the plasma leakage and inferior vena cava collapsibility facilitating fluid management.
PERISTIWA ENTREPRENEURIAL: TINJAUAN DAN PENGEMBANGAN PEMIKIRAN SHAPERO DALAM CERITA TIGA WIRAUSAHA DI BALI
Authors: Tua Roni
Published: February 2023

The corpus of academic literature on entrepreneurship is progressing rapidly, which could lead to negligence for classical ideas that may still be pertinent and contextually necessary to be developed. The unanswered topic of what attributes attach to an entrepreneur and give rise to the label "entrepreneur" may be advanced after scholars revisit earlier theories. This study is a re-examination of Albert Shapero's notion of the displaced entrepreneur and his classical theory of entrepreneurial event, both of which have been useful in understanding the transition and intention of individual entrepreneurship: an artshop owner, a maker and an exporter of creative products. This study uses a qualitative technique to compare the experiences of three Bali-based creative product entrepreneurs. This study produces findings, confirmation of the crucial importance of prior employment, the potential entrepreneur's place of employment, and a crucial step in partnership building. The conclusions have significance for both theoretical and practical formulations of relevant and contextualised entrepreneurship development strategies.
The Association Between Functional Movement Screen Scores and Knee Valgus Moments During Unplanned Sidestep Cutting in Netball
Authors: Boey Desmond , Lee Marcus
Published: February 2023

Background

Regular employment of three-dimensional (3D) motion analyses to assess and monitor knee valgus moments; a contributor to non-contact anterior cruciate ligament (ACL) injury; during unplanned sidestep cutting (USC) is costly and time-consuming. An alternative quick-to-administer assessment tool to infer an athlete’s risk for this injury could allow prompt and targeted interventions to mitigate this risk.

Purpose

This study investigated whether peak knee valgus moments (KVM) during weight-acceptance phase of an unplanned sidestep cut were correlated with composite and component scores of the Functional Movement Screen (FMS™).

Study Design

Cross-sectional, Correlation

Methods

Thirteen female national-level netballers performed six movements of the FMS™ protocol and three trials of USC. A 3D motion analysis system captured lower limb kinetics and kinematics of each participant’s non-dominant leg during USC. Averages of peak KVM across USC trials were calculated and examined for correlations with composite and component scores of the FMS™.

Results

No correlations were found between FMS™ composite or any of its component scores with peak KVM during USC.

Conclusions

The current FMS™ did not show any correlations with peak KVM during USC on the non-dominant leg. This suggests that the FMS™ has limited utility in screening for non-contact ACL injury risks during USC.

Level of Evidence

3
Video Analysis of 26 Cases of Second ACL Injury Events in Collegiate and Professional Athletes
Authors: Vargas Manuela , Chaney Grace K , Mejía Jaramillo María C. , Cummings Paige , McPherson April , Bates Nathaniel A.
Published: February 2023

Background

Significant effort has gone into the identification and quantification of the underlying mechanisms of primary ACL injury. Secondary ACL injury is observed in approximately 1/4 to 1/3 of athletes who return to sport following ACL reconstruction. However, little has been done to evaluate the mechanisms and playing circumstances surrounding these repeat injuries.

Hypothesis/Purpose

The purpose of this study was to characterize the mechanisms of non-contact secondary ACL injuries using video analysis. It was hypothesized that in video recordings of secondary ACL injury, athletes would exhibit greater frontal plane hip and knee angles, but not greater hip and knee flexion, at 66 ms following initial contact (IC) as compared to at IC and 33ms following IC.

Study Design

Cross-Sectional Study

Methods

Twenty-six video recordings of competitive athletes experiencing secondary ACL ruptures via noncontact mechanisms were analyzed for lower extremity joint kinematics, playing situation, and player attention. Kinematics were assessed at IC as well as 33 ms (1 broadcast frame) and 66 ms (2 broadcast frames) following IC.

Results

Knee flexion and knee frontal plane angles were greater at 66 ms than IC (p ≤ 0.03). Hip, trunk, and ankle frontal plane angles were not greater at 66 ms than IC (p ≥ 0.22). Injuries were distributed between attacking play (n=14) and defending (n=8). Player attention was most commonly focused on the ball (n=12) or an opponent (n=7). A single-leg landing accounted for just over half of the injuries (54%), while a cutting motion accounted for the remainder of the injuries (46%).

Conclusion

Secondary ACL injury was most likely to occur during landing or a sidestep cut with player attention external to their own body. Knee valgus collapse combined with limited hip motion was identified in the majority of secondary injuries.

Level of Evidence

Level IIIb
Differences in Thigh Muscle Activation Between Standing and Landing Exercises for Knee Injury Prevention and Rehabilitation
Authors: Bencke Jesper , Strøm Mark , Curtis Derek J. , Bandholm Thomas , Zebis Mette K.
Published: February 2023

Background

In injury prevention or rehabilitation programs, exercises that facilitate enhanced hamstring activity may be beneficial when aiming to enhance knee joint stability during movements in sports with higher risk of acute knee injury. Information about neuromuscular activation of the hamstring muscles in commonly used exercises may improve exercise selection and progression in programs for knee injury prevention or rehabilitation.

Purpose

To investigate (1) how balance devices with progressing degrees of instability influence the activity of muscles controlling the knee joint in typical balance exercises with different demands on postural control, and (2) if any between-sex differences exist.

Study design

Cross-sectional study.

Methods

Twenty habitually active healthy adults (11 males) participated in this cross-sectional study. Single-leg stance, single-leg squat and single-leg landing were performed on the floor and two different balance devices imposing various levels of challenge to postural control. Three-dimensional motion analysis was used to obtain hip and knee joint angles, and as primary outcomes, and peak normalized EMG activity from the hamstrings and quadriceps muscles was measured for comparison between exercises.

Results

The more challenging in terms of maintaining stable balance the devices were, the higher hamstring muscle activity levels were observed. There was a clear progression across balance devices from single-leg stance to single-leg squat and further to single-leg landing displaying increasing hamstring activity levels. The change in medial hamstring activity across all devices when changing from single-leg squat to single-leg landing was significantly higher for the female participants than for the males reaching a higher level of activity.

Conclusion

The muscle activity of the hamstrings and quadriceps increased when the motor task was more dynamic. Specifically, single-leg landings were effective in increasing the hamstring muscle activity over the single-leg stance to single-leg squat exercises, and muscle activity was significantly increased with the most unstable device. Increases in hamstring muscle activation was greater in female subjects than males with increasing instability of the balance devices.

Trial identifier

Not registered.

Level of evidence

3
MSK Ultrasound - An IJSPT Perspective
Authors: Page Phil , Manske Robert C , Voight Michael , Wolfe Chris
Published: February 2023

MSK ultrasound is a valuable imaging technique which has become increasingly popular in recent years. This efficient technique proves beneficial in a variety of ways. MSK ultrasound effectively streamlines the process by enabling practitioners to securely and accurately image and assess structures all in one simple step. By allowing healthcare providers to access critical information quickly and conveniently, MSK ultrasound can help identify conditions early when interventions are most effective. Moreover, it may be able to shorten diagnostic times and reduce costs through more cost-effective use of resources such as imaging and laboratory testing. Furthermore, MSK ultrasound can provide additional insights into musculoskeletal anatomy and help improve patient care and outcomes. In addition, utilizing this method reduces exposure to radiation and provides enhanced patient comfort with its quick scan duration. MSK ultrasound has a high potential to provide quick and accurate diagnosis of MSK disturbances when used correctly. As clinicians become more comfortable and familiar with this technology, we will continue to see its use expand for various MSK assessments. In this commentary we’ll explore how ultrasound can be used in physical therapy, specifically for musculoskeletal assessment. We’ll also look at some of the potential benefits and limitations of using ultrasound in PT practice.
Poder y diversidad. Los aportes de la Interseccionalidad a la didáctica de las ciencias sociales
Authors: Massip Sabater Mariona , Castellví Mata Jordi
Published: February 2023

Una educación democrática, inclusiva y atenta a la diversidad tiene que serlo en todos sus ámbitos, también en el de los contenidos. Cuando cuestionamos los contenidos de las ciencias sociales escolares y las personas que los protagonizan con perspectiva de género llama la atención, en primer lugar, la ausencia de la mujer como sujeto histórico y social. Preguntarnos por el eje identitario del género nos permite cuestionar todas las identidades invisibilizadas en la construcción heteropatriarcal del currículum. En este artículo planteamos la importancia del concepto de la interseccionalidad para repensar los contenidos curriculares y sus protagonistas afrontando las identidades desde el reconocimiento de la diversidad y entendiéndola dentro de las relaciones de poder y discriminación, algo fundamental si aspiramos a una educación que no sea reproductora de desigualdades sino crítica, comprometida y transformadora.
Reseña de Proyecto LATE (laboratorio temporal)
Authors: García-Ceballos Silvia
Published: February 2023

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Prevenir Auschwitz: la enseñanza del Holocausto a partir de una exposición de fotografías
Authors: Corchado Guillén David
Published: February 2023

Enseñar el Holocausto en la Educación Secundaria es una tarea irrenunciable al tiempo que compleja, por su condición de acontecimiento extremo y casi inefable. El tratamiento de la Historia desde el punto de vista de los vencidos y la memoria como herramienta movilizadora, ofrecen posibilidades educativas muy valiosas para afrontar la enseñanza del Holocausto. Lo mismo ocurre con la educación en valores democráticos, que se presenta como una tarea necesaria en un contexto, el actual, de renacimiento de los movimientos neofascistas y de extrema derecha, y de banalización y negación del genocidio judío. Para este cometido, la fotografía se presenta como una fuente de información primaria útil para llevar el método histórico al aula y como un recurso didáctico motivador en una sociedad híper saturada de imágenes.
La Transición entre pupitres. Una propuesta didáctica para el estudio de la Transición democrática en 2º de Bachillerato
Authors: Magaldi Fernández Adrián
Published: February 2023

La Transición democrática española supone un período fundamental de nuestra historia reciente. Esta se trata del hito configurador de nuestro actual sistema democrático, lo que evidencia la importancia de que sea estudiada en los institutos de nuestro país. Este artículo pretende trazar una propuesta didáctica para su estudio en 2º de Bachillerato. Uniendo las ideas de aprendizaje en espiral, aula invertida y aprendizaje constructivista se diseña un planteamiento didáctico innovador que pretende fomentar la reflexión y el análisis crítico respecto a un período clave para comprender nuestra realidad socio-política.
“Arqueología para descubrir la Hélade”: Una actividad gamificada para el trabajo con fuentes en Educación Secundaria
Authors: Rubio-Navarro Alodia , García-Ceballos Silvia , González González José Manuel
Published: February 2023

Actualmente siguen siendo minoritarias las investigaciones educativas que han estudiado la capacidad de la gamificación para fomentar las competencias propias de cada disciplina. Con el objetivo de evaluar el potencial de la gamificación para desarrollar las competencias del pensamiento histórico, este trabajo presenta el diseño, la implementación y el análisis de los resultados de una actividad gamificada destinada a la asignatura “Geografía e Historia” de 1º de la ESO. Los resultados obtenidos en esta investigación de diseño semi-experimental apuntan a que la gamificación puede favorecer el desarrollo de algunas heurísticas propias del trabajo con fuentes, como su contextualización y su análisis, si bien es menos evidente el potencial de esta estrategia para ayudar a comprender sesgos y perspectivas en el proceso de atribución de la autoría de las fuentes.
Reporteros de la historia: la gamificación en el marco de un proyecto interdisciplinar en un aula multigrado de primaria
Authors: Callarisa Mas Joan , Guinó Arias Margarita
Published: February 2023

Este artículo describe el desarrollo de un proyecto colaborativo compartido entre escuela y universidad. En este caso, entre la Universidad de Vic y la escuela Pompeu Fabra de Salt. En este proyecto los protagonistas de la experiencia son los alumnos del tercer ciclo de primaria de la escuela Pompeu Fabra de Salt (Gironès) y el grupo de trece alumnos de la Universidad de Vic matriculados en la asignatura Didáctica de las Ciencias Sociales, del doble grado en Maestro de Educación Infantil y Primaria en mención inglesa. Esta colaboración se ha vertebrado en torno a la participación del grupo de primaria en el proyecto interdisciplinar "Reporteros de la historia”.
Flipped Classroom in a Digital Learning Space: Its Effect on the Students’ Attitude Toward Mathematics
Authors: Romero Anton A , Angeles Edarlyn D
Published: February 2023

Mathematical attitudes tend to deteriorate starting at grade 7 level. In this experiment, the impact of flipped learning on the students' declining attitudes toward mathematics have been investigated. The effect of the flipped classroom in a digital learning space was determined by employing a non-equivalent (pretest and posttest) control-group quasi-experimental design. One hundred sixty-six grade 7 university students served as the participants of this study, eighty-three (83) each for the experimental and control groups. The data was gathered using the Attitude Towards Mathematics Inventory (ATMI) composed of four constructs. The results were analyzed by employing the Mann-Whitney U Test, Wilcoxon Signed Ranks test and descriptive statistics. The results revealed that the overall attitude across the four constructs of ATMI for the control group declined significantly while the experimental group maintained their positive attitude after one school year. Also, the participants in the flipped classroom were better than the participants in the control group with regard to the overall ATMI and the construct value, motivation, and enjoyment. It was concluded that the use of a traditional strategy in digital space negatively affects the attitude of the students in mathematics. The flipped classroom was able to address the declining attitude of the secondary students and maintained their joy, motivation, self-confidence, and value of mathematics. Furthermore, this study recommends employing the flipped classroom model in a different mode of learning to improve attitude and academic performance, while improving the sampling technique, and making it the basis of administration of policymaking, facilitating the creation of ATMI using the native language of the country.
Effects of COVID-19 Pandemic on Accounting Students’ Capability to Use Technology
Authors: Al-Absy Mujeeb Saif Mohsen
Published: February 2023

The study aims to examine accounting students’ perceptions of: (i) the importance of using technology during the COVID-19 pandemic; (ii) the impact of the COVID-19 pandemic on the extent of their use of technology; (iii) the impact of the COVID-19 pandemic on their capability to use technology; and (iv) their satisfaction with using the Tally software program during the COVID-19 pandemic. A quantitative method was used in which a questionnaire was distributed to students at a higher education institution; specifically, students in the Accounting and Finance Department at Gulf University. The results showed that among the responding students there was a high level of agreement on the importance of using technology during the COVID-19 pandemic. Respondents highly agreed on the significant impact of the COVID-19 pandemic on the extent of students’ use of technology. Moreover, findings indicated that there was a high level of agreement on the impact of the COVID-19 pandemic on the students’ capability to use technology. Lastly, the results pointed out a high level of satisfaction with using the Tally software program during the COVID-19 pandemic. The study contributes to the body of knowledge by providing empirical evidence on the issue of using technology in education during COVID-19. The results provide evidence that students are now more competent in using most educational technologies. Hence the study helps policymakers and educational institutions appreciate the importance of technological tools in education, and will therefore encourage them to apply technological tools that can improve student performance.
Kebijakan Retribusi Daerah: Analisis Potensi Pendapatan pada Tempat Rekreasi dan Venue Olahraga Komersial
Authors: Suparman Nanang , Septiadi Muhammad Andi
Published: February 2023

Regional levies are one of the sources of regional income that can fulfill finance regions to carry out their autonomy. Business service levies are fees for services provided by the government that are commercial in nature because basically these services can also be provided by the private sector. Recreation and sporting venues that are increasingly in demand by the community are example of business service fees that have significant potential to increase local income. The purpose of this study is to analyze the potential for levies for recreational and sports venues in Ciamis Regency, obstacles  in determining potential levies for recreational and sports venues, as well as efforts made to increase the potential for levies for recreation and sports venues. The method used in this reseach is a qualitative methode with a case study approach. Data collection technique are carried out in several ways including observation, interviews, documentation and audio visuals. The result of data analysis conclude that the average revenue from recreation and sports in the last five years is still low around 3,66%, this means that a wider potential is nedeed, while at the level implementation of the collection there are several obstacles such as low public awareness, lack of facilities, and adequate infrastructure.
Analisis Pelaksanaan Otonomi Khusus dalam Mengatasi Kemiskinan di Kabupaten Aceh Barat
Authors: Ramazan Siti , Safrida Safrida
Published: February 2023

The implementation of special autonomy in West Aceh Regency has been carried out well, this can be seen from the various efforts made by the government in tackling the problems that exist in the community, especially the problem of poverty alleviation. Poverty is a point where people are unable to meet basic needs in maintaining a better life. So this study aims to analyze the implementation of special autonomy as a whole in West Aceh Regency in an effort to alleviate poverty, therefore an in-depth analysis is needed in order to achieve good results. This research uses qualitative methods through a case study approach, data collection techniques are carried out through observation, interviews, documentation, and literature studies. Data analysis was carried out through data reduction, data display, and drawing conclusions. Based on the findings in the field, it shows that the people of West Aceh Regency are still in a high poverty level, namely 18.34%. The conclusion of this study states that the implementation of special autonomy as an effort to alleviate poverty has not yet fully run optimally in West Aceh Regency, because there are still many inequalities from the regional government in distributing special autonomy funds to each district/city. In this case, districts/cities only get 40%, and the other 60% is managed by the province. Thus, the special autonomy fund used for poverty alleviation is only 5% of 40% in Aceh Barat District
Analysis of Public Trust and POLRI Performance: An Exploratory Study
Authors: Zulganef Zulganef , Nilasari Irma
Published: February 2023

The purpose of this study is to analyze and understand the relationship of public trust and users loyalty as performance of  POLRI institution. This study is carried out by distributing questionnaires (both open-ended and close-ended) on 500 residents in Bandung City, Indonesia, to find out about their perception and trust towards POLRI institution. This study uses quantitative and qualitative approach with descriptive-verificative method to gain deeper information about the phenomena that occurs.  This study results in several findings, that the public has good perception of the performance of POLRI in maintaining unity and integrity, handling political and/or legal cases, handling the conditions of public order and security, as well as the handling of COVID-19. However, there is still a need to draw sympathy from the public and gain higher trust from them, which is also suggested in this study.
Analisis Model Implementasi Kebijakan Publik pada Pemerintah Desa di Kecamatan Dau Kabupaten Malang
Authors: Sumarsono Cokro Wibowo , Muchsin Slamet , Sunariyanto Sunariyanto
Published: February 2023

Semangat dari Undang Undang Nomor 6 tahun 2014 tentang Desa adalah mengembalikan otoritas desa, namun pada implementasi lapangannya birokratisasi pihak supradesa kepada pemerintah desa berlangsung dengan sangat ketat. Penelitian ini mengambil lokus pada desa-desa yang berada di Kecamatan Dau Kabupaten Malang guna menganalisis pelaksanaan kebijakan di kawasan perdesaan yang diapit oleh Kota Malang dan Kota Batu. Kajian analisis terhadap implementasi kebijakan publik pada pemerintahan desa diperlukan guna merumuskan rekomendasi model implementasi kebijakan publik di desa-desa yang memiliki keragaman latar belakang demografi, sosiologi dan tingkat pendidikan warga. Rumusan masalah dalam penelitian ini adalah bagaimanakah faktor pendukung dan faktor penghambat implementasi kebijakan publik pada pemerintahan desa, serta bagaimanakah analisis model implementasi kebijakan bidang pelayanan publik, pembangunan infrastruktur dan pemberdayaan masyarakat pada pemerintahan desa di Kecamatan Dau berdasarkan faktor komunikasi, sumberdaya, disposisi dan struktur birokrasi. Penelitian ini menggunakan pendekatan kualitatif  dengan kombinasi antara kajian pustaka dan penelitian lapang. Analisis data menggunakan tahapan pengumpulan data, kondensasi data, penyajian data dan menarik kesimpulan. Pelayanan publik terkonsentrasikan dalam administrasi kependudukan, pengelolaan air bersih, pengelolaan sampah dan pengurusan pemakaman warga. Pembangunan infrastruktur terbagi dalam partisipasi publik, inovasi kebijakan, program prioritas dan sumber pendanaan. Sedangkan pemberdayaan masyarakat terkonsentrasikan dalam pemberdayaan lembaga kemasyarakatan desa dan kearifan lokal desa.
SEMIOTIC CONCEPTUALIZATION OF THE BODY AND THE COMPARATIVE PHRASEOLOGY
Authors:   Russian State University for the Humanities, Kreidlin Grigorii E.
Published: February 2023

The article considers a fragment of the Russian and Spanish semiotic conceptualization of the human body. This fragment is presented by the somatic object “heart”, as there are phraseological somatisms with the name of this object both in Russian and in Spanish. The article provides a semantic description of the Russian word сердце and its Spanish equivalent corazón: ‘an invisible somatic object located in the upper left part of the human body behind the chest. The heart can be heard because it is constantly beating. The main function of the heart is to supply blood to all somatic objects in the human body’. The importance of including physical, structural and functional features of the heart into the semantic representations of these words is demonstrated. Among the physical features of the heart we consider caritivity and redundancy, among the structural ones – the presence of alien objects on / inside the heart (in particular, hair or wool), as the functional ones – the ability of the heart to supply blood to the body and its parts. This feature approach allows to explain some of the uses of the Spanish and Russian words for the heart. The difference in phraseological somatisms of two languages with these words is demonstrated.