Dual Position Research Articles

Prone Single Position Approach to Lateral Lumbar Interbody Fusion: Systematic Review and Meta-Analysis.

Lateral lumbar interbody fusion (LLIF) with posterior screw fusion is a safe and effective treatment for patients suffering from degenerative spine disorders. While LLIF has been shown to restore disc height, decompress neural components, correct sagittal imbalances, and improve pain scores, the approach requires repositioning patients for posterior pedicle fixation, which requires 2 separate surgeries. The evolution of surgical techniques, navigation, and robotics has allowed for a single position approach to LLIF with the patient in the prone position. The purpose of this study was to perform a systematic review and meta-analysis comparing the prone single position (PSP) LLIF approach to the dual position LLIF approach. We hypothesized that PSP LLIF will have a reduced operative time, complication rate, and blood loss compared with the dual position LLIF procedure. A systematic review was performed in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses 2020 guidelines. PubMed and Embase databases were searched with key terms: (lateral AND [interbody OR "inter body"] AND lumbar AND fusion) AND (prone OR single). Results were extracted and reviewed by 2 authors (MR and RB) per selection criteria. Patient demographics were extracted from the selected studies, along with surgical, patient-reported, and radiographic outcomes. A meta-analysis was performed using an unstandardized mean difference or log odds ratio with a confidence level of 95%. Fifteen studies were included in the systematic review and 5 studies compared PSP LLIF to dual position LLIF for meta-analysis. PSP LLIF had a reduced operative time and length of stay compared with the dual position approach, although there was no significant reduction in estimated blood loss. Additionally, PSP LLIF improved lumbar lordosis more effectively than dual position LLIF. There was no difference in segmental lordosis or pelvic tilt. There was no difference in intraoperative complications, postoperative complications, or reoperations. PSP LLIF reduces operative time and length of stay, with no relative increase in complications or reoperations compared with the dual position approach. Additionally, PSP LLIF improves lumbar lordosis relative to dual position LLIF, which may improve functional outcomes and reduce the risk of developing adjacent segment disease. The associated operative and postoperative benefits of PSP LLIF may improve long-term outcomes of patients undergoing spinal fusion.

UVIO: Adaptive Kalman Filtering UWB-Aided Visual-Inertial SLAM System for Complex Indoor Environments

Precise positioning in an indoor environment is a challenging task because it is difficult to receive a strong and reliable global positioning system (GPS) signal. For existing wireless indoor positioning methods, ultra-wideband (UWB) has become more popular because of its low energy consumption and high interference immunity. Nevertheless, factors such as indoor non-line-of-sight (NLOS) obstructions can still lead to large errors or fluctuations in the measurement data. In this paper, we propose a fusion method based on ultra-wideband (UWB), inertial measurement unit (IMU), and visual simultaneous localization and mapping (V-SLAM) to achieve high accuracy and robustness in tracking a mobile robot in a complex indoor environment. Specifically, we first focus on the identification and correction between line-of-sight (LOS) and non-line-of-sight (NLOS) UWB signals. The distance evaluated from UWB is first processed by an adaptive Kalman filter with IMU signals for pose estimation, where a new noise covariance matrix using the received signal strength indicator (RSSI) and estimation of precision (EOP) is proposed to reduce the effect due to NLOS. After that, the corrected UWB estimation is tightly integrated with IMU and visual SLAM through factor graph optimization (FGO) to further refine the pose estimation. The experimental results show that, compared with single or dual positioning systems, the proposed fusion method provides significant improvements in positioning accuracy in a complex indoor environment.

Positioning regulation of organelle network via Chinese microneedle.

The organelle network is a key factor in the repair and regeneration of lesion. However, effectively intervening in the organelle network which has complex interaction mechanisms is challenging. In this study, on the basis of electromagnetic laws, we constructed a biomaterial-based physical/chemical restraint device. This device was designed to jointly constrain electrical and biological factors in a conductive screw-threaded microneedle (ST-needle) system, identifying dual positioning regulation of the organelle network. The unique physical properties of this system could accurately locate the lesion and restrict the current path to the lesion cells through electromagnetic laws, and dynamic Van der Waals forces were activated to release functionalized hydrogel microspheres. Subsequently, the mitochondria-endoplasmic reticulum (ER) complex was synergistically targeted by increasing mitochondrial ATP supply to the ER via electrical stimulation and by blocking calcium current from the ER to the mitochondria using microspheres, and then the life activity of the lesion cells was effectively restored.

О пределах взаимодействия субъектов общественного контроля и органов судебной власти в Российской Федерации

This article is devoted to the analysis of the limits of interaction of subjects of public control with judicial authorities in the Russian Federation. The paper examines the main directions of the above-mentioned interaction. In particular, the dual position of judicial authorities in their relations with subjects of public control is noted: on the one hand, their activities, acts and decisions act as objects of public control; on the other hand, the latter have the right to apply to the court in defense of the rights of an indefinite circle of individuals, the rights and legitimate interests of some varieties of legal entities. The article formalizes and analyzes the main problems that hinder the definition of the limits of interaction of subjects of public control with judicial authorities in the Russian Federation, a system of measures for their resolution is developed and justified. The methods of scientific research are used in the work: formal-logical; comparative-legal; historical-legal; statistical; sociological. The purpose of the study is to substantiate the optimal limits of interaction of subjects of public control with judicial authorities in the Russian Federation, allowing to achieve the goals and objectives of this institution of civil society.

Гедонизм в поэзии и имидже Генриха Сапгира

Genrikh Sapgir was an author of the “Lianozovo school” of Russian uncensored poetry. He held a dual position in the literature of his time, as he was a well-known official children’s writer, which provided his relatively good (for the USSR) standard of living, while simultaneously his whole “mature” period of poetry lay in the field of uncensored poetry, without crossing its borders into official poetry. In his personal life, however, Sapgir would often cross borders: in artistic circles his image was that of a hedonistic trouble-making dandy who loved feasts, women, and the bohemian lifestyle. This image did not fit within the frame of the common concept of the “illicit poet” due to Sapgir’s many acquaintances among official authors and his material wellbeing; however, it also challenged the conventions for official literature, because official artists’ personal behavior was constantly monitored by the party apparatus and labor unions. Hedonistic motifs played a very important role throughout his uncensored poetic oeuvre. It would be reasonable to assume that Sapgir’s behavior continued the traditions of “life creation” of the modernist period under the new sociocultural and political circumstances of the cultural underground in the late Soviet era.

The Witnesses, the Mediators, and the Treatment Plan Promoters: A Phenomenological Study of Residential Facility Staff Members’ Role as Companions on Wilderness Journeys

Background: Wilderness therapy (WT) has become a popular method of intervention with youth residing in residential facilities (RFs), and an important part of their treatment plan. Thus, the dual positioning and role of RF staff members - who both accompany participants on the WT journey and, at the same time, participate in their on-site, daily therapeutic processes - becomes pivotal in therapy programs for this population. Purpose: To examine the meaning of RF staff members’ role in supporting youth from RFs during the WT process. Methodology: The study adopted a qualitative-phenomenological approach, anchored in semi-structured, in-depth interviews with 12 therapeutic-educational workers (6 social workers and 6 youth workers) employed in RFs in Israel. Findings/Conclusions: Three roles emerged from the interviews: the witness, the mediator, and the promoter of the treatment plan. Implications: An ecological-systemic approach is recommended. This approach will provide an opportunity for the RF team members to engage in possible interventions during the journey. It will also allow them to expand the change process which takes place on the WT journey, to the daily treatment plan of the youth within the RF, and among the social and educational systems in which they are involved.

Single position, prone oblique lateral interbody fusion (OLIF)-case illustration and technical considerations.

Oblique lateral interbody fusion (OLIF) is a powerful method to treat various spinal conditions and is frequently combined with posterior instrumentation. This is traditionally performed in dual positions, with the patient first in lateral then turned prone. Single position lateral surgery (SPS-L) has been studied in a bid to improve surgical efficiency and reduce operative costs, but various limitations have been identified. More recently, the single position prone surgery (SPS-P) has been described as an alternative to address some of these limitations. This case illustrates a patient who underwent SPS-P using an OLIF corridor with subsequent posterior decompression and instrumentation. The benefits and limitations of this procedure compared to the conventional techniques are highlighted in this case. We present the case of a 75-year-old female presenting with thoracic myelopathy over T11/12 and concurrent L2-4 spinal stenosis. She underwent OLIF of L2/3 and L3/4, posterior decompression of T11/12 and L2/3, and posterior instrumented fusion from T10-L4 via a single prone position. We aim to describe the advantages of this approach and the challenges encountered through our experience. SPS-P offers numerous benefits compared to the already powerful SPS-L. In the upper levels of the lumbar spine, a pre-psoas approach may also be feasible. However, the prone lateral technique does not replace all patients suited for a lateral interbody fusion but should be seen as a viable option for selected cases such as those with previous fusion at the L5/S1 with adjacent degeneration requiring extension and posterior fixation.

정보보호최고책임자의 겸직과 정보보호 성과: 정보보호 공시 데이터를 중심으로

정보보호최고책임자의 겸직과 정보보호 성과: 정보보호 공시 데이터를 중심으로

Design and experiment of high-speed and precise positioning seeding control system for rice seedlings based on dual-position feedback adjustment (DPFA)

To improve the alignment accuracy of the mechanical drum-type rice bowl seedling raising precision seeding line under the high-speed sowing operation state between the seed outlet and the bowl hole. This paper proposes a high-speed and precise positioning seeding control system for rice seedlings based on dual position feedback adjustment (DPFA). Based on Siemens PLC controller, through sensor selection and installation, controller parameter acquisition and calculation, and human–computer interaction software development. We have completed the design of the high-speed and precise alignment seeding control system for rice pot seedlings. Realize the dual position detection of the mechanical drum-type seed wheel and the 406-hole tray. Applying the fuzzy PID controller optimized the dual-position feedback regulation rice pot seedling high-speed and precise alignment planting control system. The response time was shortened to 0.0432 s, the overshoot was 4.5 %, and the adjustment time was 0.1105 s. The sowing test was conducted with sowing speed and height as the main influencing factors and sowing uniformity, leakage rate, and sowing pass rate as the evaluation indexes. The test results show that the sowing speed is within 500 trays/h ∼ 600 trays/h, the sowing uniformity is higher than 65 %, the missed seeding rate is less than 1.5 %, and the qualified rate of sowing is above 94 %. Among them, the maximum sowing uniformity was 66.27 %, the minimum value of missing seeding was 0.89 %, and the sowing qualification rate was 97.06 %. The accuracy rate of material shortage alarms is 100 %. The DPFA-based high-speed and precise alignment sowing control system for rice pot seedlings can realize the exact alignment control function of the mechanical drum-type seedling raising and sowing line.

Implicit Motive and Its Role in the Plot of A. S. Pushkin

The article examines the concept of implicit motive. Its specificity lies in the fact that it does not actively manifest itself in the plot and does not directly influence the development of the action. Its purpose is different: to connect texts that are far apart from each other into supertextual unites, organizing the author’s model of the world. Using the example of three works by A. S. Pushkin – “My Pedigree”, “Yezersky” and “Bronze Horseman” show how ancestry motive creates such unity. “My Pedigree”, written three years before the other two texts, reflected Pushkin’s dual position: an impoverished aristocrat among poets and a poet among the wealthy nobility. Thus, the poem turned out to be a rhetorical invective directed at two addresses: against the literary party of Bulgarin, on the one hand, and against the new nobility, on another. In the first case, Pushkin’s victory was unequivocal and consolidated the poet’s fame for centuries. It was more difficult with another addressee: the nobility, very far from the literary struggle and who continued to look at Pushkin with considering disdain. A reflection of continuing duality was the poet’s rejection of direct rhetoric and the transition to poetics, where the autobiographical motive of ancestry was transformed into fate of fictional characters: first Andrey Yezersky, then Eugene from “The Bronze Horseman”. Such a transition, in our opinion, gives grounds to consider the three works as a single super text.

Methods of using interactive technologies in technical university

The article is devoted to the theoretical justification of the necessity of using forms of interactive foreign language teaching in higher education institutions on the example of students of “Logopaedics”, as well as to the experimental verification of the necessary pedagogical conditions for it. Methods of interactive learning are rarely used in pedagogical practice, because most programmes are rather conservative and do not provide for active work of students. The following pedagogical conditions are proposed for the implementation of interactive foreign language teaching: activation of the students’ educational and professional activity by increasing their motivation for professional foreign language activity, change of the teacher’s position from the leader to the dual position of the organiser-participant of the joint educational activity, use of interactive methods and forms of conducting training sessions, development of the content of the academic discipline in the direction of interactive learning.

Dual Position Offset Injection based Multi-Parameter Decoupled Estimation of PMSM Considering Signal Injection Induced Inductance Variation

Dual Position Offset Injection based Multi-Parameter Decoupled Estimation of PMSM Considering Signal Injection Induced Inductance Variation

Satyajit Ray’s Versatile Creativity in Children's Literature and His Persistent Impact on Young Minds

"Pather Panchali" and "Charulata" are two of the most significant contributions that the creative genius Satyajit Ray has made to the film industry. On the other hand, he has not restricted his creative abilities to the area of film; rather, he has been a prolific writer and a storyteller in the realm of published works for children. Through the creation of a fictional and engaging character, Ray eventually became a well-liked figure among young minds. Readers of all ages were kept interested by the numerous mysteries and the smart plot throughout the entire book. The brilliant author introduced the thrill of solving crimes, the beauty of travel, and a brilliant scientist with an unquenchable curiosity about the universe through the adventures of Feluda and the beloved character Professor Shonku. These adventures have not only ignited his young readers' interest in scientific exploration, but they have also entertained them. It is clear that Ray is a skilled writer since he is able to take young minds to a magical world that is filled with wonder, creativity, and fantasy. It is via his narratives that a rich tapestry is created, one that resonates with people of all ages and that leads to a realm of magic. The study underlines Ray's tremendous impact on Indian children's literature, which has kindled young minds with inspiration and love for reading and storytelling. Ray's work has been credited with a number of remarkable accomplishments. In addition, the paper discusses Ray's unique dual position as an author and illustrator, which provides a powerful visual representation of his story and leaves an impression on the minds of the readers. His literary prowess is a talent that will never go out of style for any reader, and it will continue to motivate future generations to invent stories and discover new worlds.

МЕТАМОРФОЗЫ ВЕЩИ В КУЛЬТУРЕ: ОСОБЕННОСТИ СИМВОЛИЧЕСКОЙ КОММУНИКАЦИИ

The symbolic nature of a thing predetermines it for mimicry and metamorphosis – it is both here and there, in the past and the future, nothing and something, necessity and possibility, inviolability and changeability. A thing is the objective embodiment of the readiness to make direct contact with the outside world, to create a new reality, to recode entities. The ambivalence of the sign properties of a thing puts it in a borderline position – contact with it is motivated by human needs and the need to clarify, define, change something. The immobility of the very physical essence of a thing serves as a support and impetus for the transformation and doubling of the surrounding reality. The world of things appears to the world of people as a kind of stage for constructing the so-called augmented reality. In this regard, an ordinary thing can be not only an art object, but also a motivator and designer of new subject connections in artistic modeling. Moreover, the dual positionality of a thing makes it a convenient tool for all kinds of objective transformations and imitations, especially in ritual and sacred cultural practices. The author tries to clarify in this article some features of the transformation of the objective world of culture in the context of the symbolic and communicative properties of a thing.

Board of Directors and Financial Restatement: Evidence from The Two-Tier System

Purpose : This study investigates the role of the characteristics of the Board of Directors (BoD) on financial restatements. The characteristics are reviewed based on board tenure, board size, board independence, female board, foreign board member, board level education, board accounting expertise, and dual board position. Method : The research sample is a manufacturing company on the Indonesia Stock Exchange for 2017-2021. The analytical tool used is logistic regression. Findings : This study found that five board characteristics negatively affect financial restatements: board tenure, board size, board independence, female board, and board accounting expertise. On the other hand, a dual position has a positive effect on financial restatements. Meanwhile, foreign board and board education do not significantly affect financial restatements. Novelty : First, considering BoD as a decision maker in the company, board characteristics influence group dynamics in collaboration and communication to implement corporate governance. Second, studies that analyze the impact of executive boards on financial statements still need to be expanded, especially in Indonesia, which adheres to a two-tier system. Third, previous studies that examine the role of BoD and financial restatements have provided contradictory evidence, and many studies still need to prove the effectiveness of the BoDs’ characteristics on financial restatements. Keywords : Director; Female; Restatement

The Utility and Appropriateness of Single-Position Circumferential Lumbar Interbody Fusion Using O-Arm-Based Navigation in the Novel Oblique Position.

Single-position surgery with patients in a lateral position, which involves inserting percutaneous pedicular screws (PPS) and lateral interbody fusion (LIF) to avoid changing the position, has been reported. The purpose of the present study was to evaluate the utility and appropriateness of single-position LIF-PPS using O-arm-based navigation in the innovative oblique position. This study involved a retrospective analysis of 92 consecutive patients with lumbar spondylolisthesis who underwent LIF-PPS using O-arm-based navigation. Thirty-five subjects demonstrated surgery with repositioning, as well as 24 in the lateral decubitus position, and 33 in the oblique during PPS, where the position was changed to the lateral decubitus position using bed rotation without resetting. We compared these three groups in terms of the surgery time, blood loss, and the accuracy of the screw placement. The operative time was significantly shorter in the single-position surgery, both in the lateral and oblique positions, compared to surgery in a dual position. The blood loss was significantly increased in the lateral position compared to the dual and oblique positions. The screw trajectory angle on the downside was significantly smaller in the lateral position, and the accuracy of the screw placement on the downside was significantly lower in the lateral position compared to the dual and oblique positions. Single-position surgery could reduce the average surgery time by about 60 min. The present study indicated the oblique position during PPS insertion might make single-position surgery more useful to improve the accuracy of PPS on the downside, with less blood loss.

Customised 3D-Printed Surgical Guide for Breast-Conserving Surgery after Neoadjuvant Chemotherapy and Its Clinical Application.

For patients eligible to undergo breast-conserving surgery (BCS) after neoadjuvant chemotherapy, accurate preoperative localisation of tumours is vital to ensure adequate tumour resection that can reduce recurrence probability effectively. For this reason, we have developed a 3D-printed personalised breast surgery guide (BSG) assisted with supine magnetic resonance imaging (MRI) and image 3D reconstruction technology, capable of mapping the tumour area identified on MRI onto the breast directly using dual positioning based on the manubrium and nipple. In addition, the BSG allows the colour dye to be injected into the breast to mark the tumour region to be removed, yielding more accurate intraoperative resection and satisfactory cosmetic outcomes. The device has been applied to 14 patients from January 2018 to July 2023, with two positive margins revealed by the intraoperative biopsy. This study showed that the BSG-based method could facilitate precise tumour resection of BCS by accurately localising tumour extent and margin, promoting the clinical efficacy in patients with breast cancer as well as simplifying the surgical process.

EPT-Net: Edge Perception Transformer for 3D Medical Image Segmentation.

The convolutional neural network has achieved remarkable results in most medical image seg- mentation applications. However, the intrinsic locality of convolution operation has limitations in modeling the long-range dependency. Although the Transformer designed for sequence-to-sequence global prediction was born to solve this problem, it may lead to limited positioning capability due to insufficient low-level detail features. Moreover, low-level features have rich fine-grained information, which greatly impacts edge segmentation decisions of different organs. However, a simple CNN module is difficult to capture the edge information in fine-grained features, and the computational power and memory consumed in processing high-resolution 3D features are costly. This paper proposes an encoder-decoder network that effectively combines edge perception and Transformer structure to segment medical images accurately, called EPT-Net. Under this framework, this paper proposes a Dual Position Transformer to enhance the 3D spatial positioning ability effectively. In addition, as low-level features contain detailed information, we conduct an Edge Weight Guidance module to extract edge information by minimizing the edge information function without adding network parameters. Furthermore, we verified the effectiveness of the proposed method on three datasets, including SegTHOR 2019, Multi-Atlas Labeling Beyond the Cranial Vault and the re-labeled KiTS19 dataset called KiTS19-M by us. The experimental results show that EPT-Net has significantly improved compared with the state-of-the-art medical image segmentation method.

Coping with paradoxical demands: the dual position of deans in French business schools

ABSTRACT Recent studies have highlighted the major challenges faced by managers in the higher education sector and shown the contradictory demands which foster paradoxical tensions. Previous works have also underlined some specific tensions and rigidities that business school deans regularly face in their role. Yet, few studies have empirically explored which paradoxical tensions deans face and how they cope with them. Our paper addresses this gap. Using a qualitative study, we explore the simultaneous and interrelated contradictions faced by deans in French business schools and address how they manage the tensions related to these conflictual and complicated situations. Our work reveals five main tensions that deans have to face and two individual categories of responses to these tensions. It underlines two types of cognitive mindsets (paradox mindset and dilemma mindset) adopted by deans to deal with paradoxical tensions and highlights how deans have become academic entrepreneurs with hybrid profiles in a paradoxical system.

WeldNet: A deep learning based method for weld seam type identification and initial point guidance

To address the limitations associated with the low intelligence of welding robots, a weld seam type identification and initial point guidance method based on deep neural network named WeldNet was proposed. By incorporating channel shuffling and an attention module, the size of the WeldNet model is reduced while preserving high detection accuracy. With the help of the proposed Center-Box annotation method, the optimized WeldNet network can not only automatically identify the type of welding workpieces at a frequency of 66 Hz, but also extract the initial point of the weld seam with an error of less than 1.63 pixels. Based on the principle of ”monocular vision dual position shooting”, automatic guidance of the initial point of the weld seam is achieved, which greatly improves the intelligence level of welding robots. The experimental results show that the method proposed can accurately identify various types of weld joints such as butt joints, lap joints, and fillet joints with a recognition rate of 99.6%, and the method can also guide the welding torch to align with the initial point of the weld seam with an error of just 0.85 mm.