bluuebunny/crossref_metadata_2025_split huggingface dataset:
X-Ray based navigation system for torsional correction - first clinical data
Authors: Grünwald Leonard , Buschbaum Jan , Lobenhoffer Philipp , Windolf Markus , Schröter Steffen 
Published: April 2018

It is well known that treatment of femoral shaft fractures can lead into torsional malalignment. In up to 15% of these cases a torsional correction is necessary. Further there are congenital torsional abnormities causing disbalances in the knee joint. In both cases a torsional correction osteotomy can be helpful. However the results of these kind of osteotomies can defer from the planned correction-angle. There are various intraoperative tests to check the corrected angle with the planned one. But still there are a lot of unsatisfying results. It is well known that there exist navigation systems for this kind of surgery. But usually they are expensive, time consuming and need a lot of hardware. The so called X-in-One system is a truly x-ray-based navigation system. Besides the c-arm two probes and one tablet pc are needed. The objective of this study was to proof the feasibility in a clinical setting. Additionally it was meant to be a validity check. After testing two cadaver legs in the laboratory we received the ethical approval to perform a first clinical trial. From November 2016 to June 2017 we included 5 patients who underwent torsional correction of their femur. Planning of rotational-angle was done by CT and measured with the Waidelich-method. After surgery CT and measurement was performed again to verify the success of surgery. During surgery the angle was measured with two wire technique and an angle template. To stabilize the osteotomized bone during surgery we used an external fixator. Therefore we could attach both navigation probes at each Schanz’screw (distal and proximal to the osteotomy). The surgeon was blinded to the results of the system. So the calculation was performed by the system after surgery. Therefore we took two x-ray images done during surgery, one before osteotomy and the other after the correction was stabilized. With these values we were able to calculate the validity of the new system to the CT-measurement and against the intraoperative measurement of the surgeon. In all 5 patients no adverse events, such as infection or non-union occurred. In one case the Schanz’screw with the attached probe was rotated during sugery accidentally. However the system detected this rotation correctly. There was no significant time delay by attaching and removing the probes. All intraoperative x-rays could be used as values for calculations of the X-in-One System. The results of our new system are impressive precise. No deviation more than 1° towards the CT measurement was recognized. After finishing the development of this system it will be an easy to use tool for torsional corrections of each bone. It is very helpful to perform precise torsional osteotomies without apparent disadvantages during surgery performance and patients’ safety. An additional benefit is that post-op CT is unnecessary. But still a lot of work has to be done to implement this system into the c-arm and get the certificate for intraoperative usage.
Improved early recovery after TKA through an app-based, feedback-controlled active muscle training - A prospective randomized trial
Authors: Weber-Spickschen Sanjay , Hardt Sebastian , Horstmann Hauke , Krettek Christian 
Published: April 2018

The aim of this prospective randomized controlled trial was to evaluate if an app-based, feedback-controlled active muscle training can be used to improve the early outcome after total knee arthroplasty. Sixty patients (mean age 67.3 years, range 45 to 84) awaiting primary total knee arthroplasty (TKA) were randomized into a control- and training group. Both Groups followed an identical postoperative protocol. Additionally, the training group performed an appbased, feedback-controlled active muscle training multiple times daily postoperatively. Outcome measures were active and passive range of motion, pain at rest and in motion, knee extension strength, the Timed “Up and Go”, 10 Meter Walk Test, 30 Second Chair Stand Test, Knee Injury and Osteoarthritis Outcome Score (KOOS), Knee Society Score (KSS) and inpatient data. Mean time to follow-up was 6.88 days in the control group and 6.59 days in the training group for a total of 47 patients (78.3 percent follow-up). The training group used the GenuSport Knietrainer a total of 18.4 times (range 6 to 42 times) on average. Active range of motion was 11.4 degrees higher in the training group (p=0.038), while passive range of motion was almost the same (p=0.906). Mean pain was significantly lower in the training group both at rest (p=0.01) and in motion (p=0.002). The training group reported significantly better outcomes in the KOOS Activities of Daily Living Score (p=0.037). No significant differences were observed in KOOS pain, symptoms, sports and quality of life (p=219, p=0.625, p=0.204, p=0.452, respectively). The KSS Knee Score and KSS Function Score were significantly better in the training group (p<0.001, p=0.011, respectively). An app-based and feedback-controlled active muscle training can significantly improve the early outcome after total knee arthroplasty, particularly reduce pain and improve the range of motion. More training had better effects on the outcome than less training. Treatment costs could possibly be reduced. These findings are highly relevant regarding rising expectations from patients and the need to reduce costs in the health care system. Further studies with a longer follow up are necessary.
Arthroscopic revision surgery in the arthrofibrotic knee: who benefits?
Authors: Weber Christian , Müller-Stromberg Jochen , Weber Nicola 
Published: April 2018

Arthrofibrotic stiffness of the knee joint has been recognized as a highly debilitating complication after complex knee reconstruction. The clinical impact of arthroscopic revision surgery was evaluated for patients with knee arthrofibrosis following total knee arthroplasty (TKA) and after joint preserving procedures. Hypothesis: Arthroscopic revision surgery is associated with functional benefits in both groups. We retrospectively reviewed a consecutive series of adult patients (#CHR: greaterlike#18 years) at a single institution who underwent arthroscopic revision for knee stiffness. Minimum follow-up: 24 months. The analysis included demographic, surgical and histological data. The following outcome parameters were evaluated: pain (Visual Analog Scale, VAS); objective score systems (Oxford Knee Score) and patient activity (Tegner Activity Scale (TAS), Univ. of California Activity Scale (UCLA)). Furthermore, range of motion (ROM) was compared pre-, intra- and postoperatively. Finally, we compared body mass index (BMI) and quality of life (EQ-5D) changes. We identified a total of 57 patients who underwent arthroscopic adhesiolysis for knee arthrofibrosis: 45 after TKA (Group 1) and 12 patients with ligament reconstruction (Group 2). The patient cohort included thirty (43.5%) males and thirty-six (56.5%) females. Mean age was 69 (SD 10.6) years in the TKA group and 41 (SD 12.7) years in group 2 (p=0.01). Mean length of stay (LOS) was 4.6 days in Group 1 and 2.8 days in Group 2. Pain levels (VAS) were reduced significantly in both groups (p=0.004); from 7.5 to 4.8 in Group 1 and from 7.8 to 2.9 (Group 2). In terms of sports activity, 26 patients (37.7%) reported an improved sports activity (UCLA score). The TAS improved from 2.58 to 4.08 in Group 2. The Oxford Knee Score improved from 23.5 to 27.2 in Group 1 and from 16.5 to 36.3 in Group 2. No reduction in BMI was observed. However, quality of life (EQ-5D) improved from 47.6 to 51.9 Group 1; and from 52.9 to 71.7 in Group 2. Arthroscopic revision of the stiff knee may offer clinical benefits in terms of significant pain reduction, an improved level of activity and quality of life in stiffness following both TKA and joint preserving surgical reconstruction.
Differences between primary and secondary osteosynthesis for fractures of the lower limb with acute compartment syndrome
Authors: Ull Christopher , Seybold Dominik , Königshausen Matthias , Schildhauer Thomas , Geßmann Jan 
Published: April 2018

To analyze the differences between primary and secondary osteosynthesis for fractures of the lower limb with acute compartment syndrome (ACS). From our trauma database, we indentified a total number of 107 patients with 126 fractures of AO/OTA type 41 to 44 and 120 ACS from January 01, 2001 to December 31, 2015 who were treated with primary or secondary osteosynthesis after compartment incision. 71 patients with 77 fractures of AO/OTA classification type 41 to 44 suffering ACS received primary osteosynthesis after compartment incision (POCI) and were compared to 36 patients with 49 fractures of AO/OTA type 41 to 44 and ACS, who were treated by secondary osteosynthesis after compartment incision (SOCI). Patients with POCI showed a significantly shorter length of stay in the hospital with significantly less necessary surgeries for definitive treatment of the fractures and the soft tissue closure than SOCI patients (p < 0,001). The overall rate of infections in both groups were 13% without any difference between POCI and SOCI. The POCI of AO/OTA fractures type 41 to 44 with ACS is a safe and effective procedure for unilateral und single fractures of the lower limb without an increasing infection rate.
Pre-soaking of hamstring grafts reduces risk of infection after ACL-reconstruction. A prospective study including 1000 patients
Authors: Offerhaus Christoph , Höher Jürgen , Balke Maurice 
Published: April 2018

Post-operative infection of the knee is one of the major concerns following ACL-reconstruction. The purpose of this study was to investigate whether the pre-soaking of hamstring grafts in vancomycin reduces the incidence of post-operative infection. This prospective study included more than 1000 patients undergoing primary ACL-reconstruction over a period of 4 years. Group 1 received intra-operative iv-antibiotics without pre-soaking of the graft. Group 2 received iv-antibiotics and additionally the graft was bathed in a vancomycin solution of 5 mg/mL. In group 1, a total of 2,3% of the patients suffered a post-operative joint infection. In contrast, there were no post-operative infections in the second group (0%). Statistical analysis revealed a significantly reduced post-operative infection rate when bathing the autograft in vancomycin. Pre-soaking of hamstrings grafts with vancomycin combined with classical iv antibiotic prophylaxis reduced the rate of post-operative infection when compared to iv-antibiotics alone. This technique should be utilized to reduce the overall incidence of knee infections following ACL reconstruction.
Brentuximab vedotin plus bendamustine: a highly active first salvage regimen for relapsed or refractory Hodgkin lymphoma
Authors: LaCasce Ann S. , Bociek R. Gregory , Sawas Ahmed , Caimi Paolo , Agura Edward , Matous Jeffrey , Ansell Stephen M. , Crosswell Howland E. , Islas-Ohlmayer Miguel , Behler Caroline , Cheung Eric , Forero-Torres Andres , Vose Julie , O’Connor Owen A. , Josephson Neil , Wang Yinghui , Advani Ranjana 
Published: April 2018

Key PointsThe outpatient BV and bendamustine regimen is highly active as first salvage therapy in relapsed/refractory HL, with manageable toxicity. The CR rate of 73.6% exceeded those reported for standard chemotherapy regimens, and post-ASCT outcomes generally appeared excellent.
Enhancing recurrent neural network-based language models by word tokenization
Authors: Noaman Hatem M. , Sarhan Shahenda S. , Rashwan Mohsen. A. A. 
Published: April 2018

AbstractDifferent approaches have been used to estimate language models from a given corpus. Recently, researchers have used different neural network architectures to estimate the language models from a given corpus using unsupervised learning neural networks capabilities. Generally, neural networks have demonstrated success compared to conventional n-gram language models. With languages that have a rich morphological system and a huge number of vocabulary words, the major trade-off with neural network language models is the size of the network. This paper presents a recurrent neural network language model based on the tokenization of words into three parts: the prefix, the stem, and the suffix. The proposed model is tested with the English AMI speech recognition dataset and outperforms the baseline n-gram model, the basic recurrent neural network language models (RNNLM) and the GPU-based recurrent neural network language models (CUED-RNNLM) in perplexity and word error rate. The automatic spelling correction accuracy was enhanced by approximately 3.5% for Arabic language misspelling mistakes dataset.
Evaluation of the 2D reflection seismic method toward the exploration of thrust-controlled mineral deposits in southwestern Fujian Province, China
Authors: Liu Guofeng , Meng Xiaohong , Ni Jianhui , Chen Zhaoxi , Zhang Da 
Published: April 2018

The southwestern region of the Fujian Province is one of the major ore districts in China. The current model states that mineral deposition is highly controlled by thrust structure, which means that there may be concealed deposits located deep within overlapping thrust areas. Reflection seismology, which has great depth penetration and higher resolution than other geophysical methods, has great potential to delineate complex structures and give some clues to mineralization. In 2015, an experimental 2D reflection seismic survey called “Fujian 2D” was conducted in this region. Data were acquired along a 13.8 km length, with a source interval of 60 m, and 691 identical receivers with an equal spacing of 20 m were used to record data for each source. Due to topographical restrictions caused by the source environment, the mass or position of some shots was changed. Despite the restrictions, the average fold number reached 64 for a 10 km distance along the middle of the survey line. During the data processing procedure, conventional technologies involving static correction, noise elimination, deconvolution, and iterative velocity analyses were applied. After the prestack time migration failed to obtain a high-quality imaging result, rugged prestack depth migration (PSDM) was introduced that resulted in a better quality image of the subsurface structure and which included near-surface parts of the thrusts. In addition, P- and S-wave velocities and density data were determined from two borehole cores. Forward modeling and imaging found that the Permian marble hosting the mineral deposits has lower velocity than the surrounding rocks, where contacts give rise to strong reflections. The final rugged PSDM also clearly delineated the thrust bodies and magma intrusion zones. Combining this forward modeling with the known geology of the investigated site, the Fujian 2D reflection seismic experiment demonstrates great potential for unveiling the main elements controlling mineral deposition, such as tectonic structure, stratigraphic contacts, and lithology. Our experimental results demonstrate that reflection seismology has a wide range of applications for future mineral exploration at greater depths.
Terrorist Assemblages
Authors: Puar Jasbir K. 
Published: April 2018

Tenth Anniversary Expanded Edition
Ten years on, Jasbir K. Puar’s pathbreaking Terrorist Assemblages remains one of the most influential queer theory texts and continues to reverberate across multiple political landscapes, activist projects, and scholarly pursuits. Puar argues that configurations of sexuality, race, gender, nation, class, and ethnicity are realigning in relation to contemporary forces of securitization, counterterrorism, and nationalism. She examines how liberal politics incorporate certain queer subjects into the fold of the nation-state, shifting queers from their construction as figures of death to subjects tied to ideas of life and productivity. This tenuous inclusion of some queer subjects depends, however, on the production of populations of Orientalized terrorist bodies. Heteronormative ideologies that the U.S. nation-state has long relied on are now accompanied by what Puar calls homonationalism—a fusing of homosexuality to U.S. pro-war, pro-imperialist agendas.
As a concept and tool of biopolitical management, homonationalism is here to stay. Puar’s incisive analyses of feminist and queer responses to the Abu Ghraib photographs, the decriminalization of sodomy in the wake of the Patriot Act, and the profiling of Sikh Americans and South Asian diasporic queers are not instances of a particular historical moment; rather, they are reflective of the dynamics saturating power, sexuality, race, and politics today.
This Tenth Anniversary Expanded Edition features a new foreword by Tavia Nyong’o and a postscript by Puar entitled “Homonationalism in Trump Times.” Nyong’o and Puar recontextualize the book in light of the current political moment while reposing its original questions to illuminate how Puar’s interventions are even more vital and necessary than ever.
Carbon Quantum Dots as Fluorescent Component in Peroxyoxalate Chemiluminescence for Hydrogen Peroxide Determination
Authors: Nakano Koji , Honda Takayuki , Yamasaki Kanako , Tanaka Yoshiki , Taniguchi Keiichi , Ishimatsu Ryoichi , Imato Toshihiko 
Published: April 2018

Abstract
Nitrogen-doped carbon quantum dots synthesized by one-pot, microwave-assisted pyrolysis of citric acid in the presence of a small number of N-doping precursors, 1,2-ethylenediamine, were found to be involved in the chemically initiated electron exchange luminescence enabling peroxyoxalate chemiluminescence assay of hydrogen peroxide in the concentration range of 10–1000 µM.
Collective concept formation in educational management: An intervention study in São Paulo, Brazil
Authors: Lemos Mon­ica Fer­reira , Engeström Yrjö 
Published: April 2018

Artiklis analüüsitakse, kuidas Brasiilias São Paulos loodi haridusjuhtidele mõeldud kujundava sekkumisprojekti käigus uus hariduskorralduse kontseptsioon. Võgotskile ja Leontievile tuginedes esitasime küsimuse, milline on osalejate isikliku arusaama ja hariduskorralduse sotsiaalse tähenduse vastastikmõju ühise kontseptsiooni kujundamisel. Ühise kontseptsiooni loomise käigus tekkinud arutelusid analüüsiti kolmes järgus: alguses väljapakutud viimistlemata kontseptsiooni (ingl raw object) selgitamine, viimistlemata kontseptsiooni edasiarendamisel tekkinud vastuolude käsitlemine ja uue kontseptsiooni stabiliseerimine. Viimistlemata kontseptsioon väljendas hariduskorralduse harjumuspärast eesmärki aidata kaasa õpetamis- ja õppimistingimuste parandamisele. Vastuolud tekkisid peamiselt arusaamades selle kohta, kas hariduskorraldus on vajalik õpetamiseks ja õppimiseks või õpetamise ja õppimise kaudu kogukonna muutmiseks. Stabiliseerumine saavutati hääletamise tulemusena ning uue hariduskorralduse eesmärk määratleti näiliselt samamoodi nagu viimistlemata kontseptsiooni puhul. Stabiliseerumisperiood jäi siiski ajutiseks ja sellega seoses tuli püüda ületada kahe alternatiivse definitsiooni vastasseisu. Seega jäid nii hariduskorralduse tähendus kui ka kontseptsioon avatuks edasistele muudatustele. Siinses artiklis kirjeldame, kuidas kaasati haridusjuhte ühisesse jõupingutusse hariduskorralduse kontseptsiooni väljatöötamisel. Artiklis tutvustame ja testime uut teoreetilist raamistikku, mille abil saab uurida ühise kontseptsiooni kujundamisega kaasnevaid muutusi hariduskorralduses.
Full text
Collective concept formation in educational management: An intervention study in São Paulo, Brazil
Authors: Lemos Mon­ica Fer­reira , Engeström Yrjö 
Published: April 2018

The purpose of this paper is to analyze how a new concept of educational management was produced in a formative intervention project for manager educators in the city of São Paulo, Brazil. Drawing on Vygotsky and Leontiev, we asked: What is the nature of the interplay between participants’ personal senses and the societal meaning of educational management in the process of collective concept formation? The collective concept formation discourse was analyzed in three steps: initial explication of a raw object, clashes in further elaboration of the raw object, and stabilization of the new concept. The raw object reproduced a taken-for-granted meaning of educational management as promoting conditions for teaching and learning. The clashes occurred mainly between the notion of management for teaching and learning and the notion of management for teaching and learning for community transformation. The stabilization was achieved by a vote and defined the purpose of educational management seemingly as it was already formulated in the raw object. However, this stabilization was temporary and involved attempts to transcend the opposition between the two alternative definitions. Thus, the actual meaning and concept of educational management remained open to further steps. In this paper, we report on how manager educators engage in a collective effort to conceptualize educational management. Our article proposes and tests a new theoretical framework for studying changes in educational management as processes of collective concept formation.
Arenas for implicit education: Looking at leftovers
Authors: Marsico Giuseppina , He Min , Valsiner Jaan 
Published: April 2018

In schools and kindergartens much of education happens in "secondary places" – locations in the territory of the educational institution that are not meant for direct instruction purposes, but where all participants necessarily encounter in their daily lives. We analysed entrances, corridors and staircases from the perspective of semiotic encoding of educational values and objectives into the "secondary places", using, as evidence, ethnographic experiences from Chinese kindergartens and schools. We demonstrate that such encoding completes the fullness of cultural organisation of the environment guaranteeing the redundancy of the educational directions of the messages.
Teachers’ learning experiences in the context of neoliberal educational c hange
Authors: Timoštšuk Inge , Ugaste Aino , Mets-Alunurm Kristi 
Published: April 2018

Õpetajatöö on stressirohke ja pingete tõttu võidakse ametist loobuda. Ühed pingete põhjused on kiired muutused haridussüsteemis. Uuenevate olude ja ootustega toime tulek eeldab õpetajalt õppimist ja sotsiaalse keskkonna tuge. Et mõista, kuidas õpetajate õppimist muutuste taustal toetada, on meie eesmärk kirjeldada, kuidas kajastuvad neoliberaalsed haridusmuutused õpetajate õpikogemustes, ning analüüsida, millised õpikogemused on õpetajatele tähenduslikumad. 33 õpetajaga tehtud intervjuudest selgub, et õpetajad tajuvad positiivsete majanduslike muutuste kõrval vastuolu liberaalsete väärtuste (nt õppija individuaalsuse arvestamise) ning haridustulemuslikkusele, sh tulemuste mõõdetavusele orienteerituse vahel. Selle vastuoluga toimetulekuks saadakse tuge lähematelt kolleegidelt, kuid vajatakse ka kõrgetasemelist täiendõpet ja õpetaja kui tipp-professionaali tunnustamist ühiskonnas.
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