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Journal articles on the topic 'Positioning and orientation of the scapula'

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Published: 4 June 2021

Last updated: 4 February 2022

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1

Gregory, Thomas, and Mickael Artuso. "Does the Orientation of the Glenoid Rim Respect the Scapula Blade Evolving With Age, Compared to the Glenoid Vault Cortex Plane? Impact in Glenoid Positioning in Total Shoulder Arthroplasty." JSES Open Access 3, no. 4 (December 2019): 233. http://dx.doi.org/10.1016/j.jses.2019.10.008.

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Trafimow, Jordan H., and Alexander S. Aruin. "Obtaining Glenoid Positioning Data from Scapular Palpable Points In Vitro." Advances in Orthopedics 2013 (2013): 1–4. http://dx.doi.org/10.1155/2013/391260.

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Both clinical and biomechanical problems affecting the shoulder joint suggest that investigators should study force transmission into and out from the scapula. To analyze force transmission between the humeral head and the glenoid, one must know the position of the glenoid. Studies have analyzed the position of the scapula from the positions of three palpable points, but the position of the glenoid relative to three palpable points has not been studied. Dry scapulae () were subjected to X-rays and a critical angle, (which relates the plane determined by the three palpable points on the scapula to a plane containing the glenoid center and the first two palpable points) was calculated. The mean value for was degrees. The obtained allows us to determine the position of the glenoid from three palpable points. This information could be used in calculation of forces across the shoulder joint, which in turn would allow optimizing the choice of strengthening exercises.

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Voleti, Pramod B., Surena Namdari, and Samir Mehta. "Fractures of the Scapula." Advances in Orthopedics 2012 (2012): 1–7. http://dx.doi.org/10.1155/2012/903850.

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The scapula plays a critical role in the association between the upper extremity and the axial skeleton. Fractures of the scapula account for 0.4% to 1% of all fractures and have an annual incidence of approximately 10 per 100,000 inhabitants. Scapular fractures typically result from a high-energy blunt-force mechanism and are often associated with other traumatic injuries. The present review focuses on the presentation, diagnosis, and treatment of fractures of the scapula. Indications for surgical treatment of glenoid fossa, scapular neck, and scapular body fractures are presented in detail. Finally, the authors’ preferred surgical technique, including positioning, approach, reduction, fixation, and post-operative management, is described.

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4

Veeger, H. E. J., F. C. T. van der Helm, and R. H. Rozendal. "Orientation of the scapula in a simulated wheelchair push." Clinical Biomechanics 8, no. 2 (March 1993): 81–90. http://dx.doi.org/10.1016/s0268-0033(93)90037-i.

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5

Frank, Rachel M., Jose Ramirez, Peter N. Chalmers, Frank M. McCormick, and Anthony A. Romeo. "Scapulothoracic Anatomy and Snapping Scapula Syndrome." Anatomy Research International 2013 (November 28, 2013): 1–9. http://dx.doi.org/10.1155/2013/635628.

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The scapulothoracic articulation is a sliding junction between the deep aspect of the scapula and thoracic rib cage at the levels of ribs 2 through 7. Motion at this articulation is dynamically stabilized by a variety of muscular attachments, allowing for controlled positioning of the glenoid to assist in glenohumeral joint function. A thorough understanding of the complex anatomic relationships, including the various muscles, and bursa, is critical to the evaluation of patients presenting with scapulothoracic disorders. The snapping scapula syndrome is caused by either osseous lesions or scapulothoracic bursitis and can be difficult to recognize and treat. The purpose of this review is to discuss the anatomy of the scapulothoracic articulation with an emphasis on the pathology associated with snapping scapula syndrome.

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Almeida, Alexandre, Daniel C. Agostini, Pietro FT Nesello, Nayvaldo C. de Almeida, Rafael Mioso, and Ana Paula Agostini. "Tomographic Analysis of Positioning of Reverse Baseplates Positioning." Journal of Shoulder and Elbow Arthroplasty 5 (January 2021): 247154922098771. http://dx.doi.org/10.1177/2471549220987714.

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Objective To verify whether reverse baseplate positioning without the support of intraoperative three-dimensional technology is within the acceptable parameters in the literature and whether glenoid bone deformity (GBD) compromises this positioning. Methods Sixty-nine reverse shoulder arthroplasties were evaluated with volumetric computed tomography (CT). Two radiologists performed blinded CT scan analysis and evaluated baseplate position within 2mm of the inferior glenoid; the inclination and version of the baseplate in relation to the Friedman line; and upper and lower screw and baseplate metallic peg end point positionings. The patients were divided according to the presence of GBD for statistical analyses. Results The two radiologists concurred reasonably in their interpretations of the following analyzed parameters: baseplate position within 2mm of the inferior glenoid rim (97.1% and 95.7%), baseplate inclination (82.6% and 81.2%), baseplate version (69.6% and 56.5%), the upper screw reaching the base of the coracoid process (71% and 79.7%), the inferior screw remaining inside the scapula (88.4% and 84.1%), and the metallic peg of the baseplate considered intraosseous (88.4% and 72.5%). Conclusion Reverse baseplate positioning without intraoperative three-dimensional technology is within the acceptable parameters of the literature, except for baseplate version and upper screw position. GBD did not interfere with baseplate positioning in reverse shoulder arthroplasty.

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7

Barmatz, Martin B., Glenn Aveni, Seth Putterman, and Joseph Rudnick. "Acoustic positioning and orientation prediction." Journal of the Acoustical Society of America 90, no. 1 (July 1991): 620. http://dx.doi.org/10.1121/1.401208.

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8

Bet-Or, Yaheli, Wolbert van den Hoorn, Venerina Johnston, and Shaun O’Leary. "Reliability and Validity of an Acromion Marker Cluster for Recording Scapula Posture at End Range Clavicle Protraction, Retraction, Elevation, and Depression." Journal of Applied Biomechanics 33, no. 5 (October 1, 2017): 379–83. http://dx.doi.org/10.1123/jab.2017-0058.

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Acromion marker cluster (AMC) methods have been shown to accurately track scapula motion during humeral elevation below 90°, however, their accuracy has not been assessed in shoulder girdle motion such as clavicle protraction, retraction, elevation, and depression independent of humeral movement. The aim of this study was to examine the reliability and validity of the AMC method to record scapula orientation at end range clavicle protraction, retraction, elevation, and depression. The right scapulae of 22 female and 20 male asymptomatic volunteers were assessed with an AMC and scapula locator (SL) method during end range clavicle protraction, retraction, elevation, and depression (without humeral elevation) using an 8-camera 3D movement registration system. Measurements recorded from the AMC and SL measures showed fair to excellent agreement (ICC 0.4–0.92). While the AMC method overestimated and underestimated scapular motion in some planes compared to the SL, root mean square error between methods were low for scapular internal/external rotation (2.3–3.7°), upward/downward rotation (4.5–6.6°), and anterior/posterior tilt (3.2–5.1°), across all conditions. The AMC method was shown to be a reliable and valid measurement of scapula orientation at end range clavicle movements independent of humeral movement.

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Oliver, Gretchen, and Wendi Weimar. "Scapula Kinematics of Youth Baseball Players." Journal of Human Kinetics 49, no. 1 (December 1, 2015): 47–54. http://dx.doi.org/10.1515/hukin-2015-0107.

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Abstract Literature has revealed the importance of quantifying resting scapular posture in overhead athletes as well as quantifying scapular kinematics during dynamic movement. Prior to this project much of the attention in throwing research had been focused on the position of the humerus without description of the positioning of the scapula. Therefore, it was the purpose of this study to present scapular kinematics during pitching in youth baseball players. Twenty-five youth baseball players (age 11.3 + 1.0 years; body height 152.4 + 9.0 cm; body mass 47.5 + 11.3 kg), with no history of injury, participated in the study. Scapular kinematics at the events of maximum humeral external rotation (MER) and maximum humeral internal rotation (MIR) during the pitching motion were assessed three-dimensionally while pitching fastballs for strikes. Results revealed that at the event of MER, the scapula was in a position of retraction, upward rotation and a posterior tilt. While at the event of MIR, the scapula was protracted, upward rotated and tilted anteriorly.

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10

Myers, Joseph B., Kevin G. Laudner, Maria R. Pasquale, James P. Bradley, and Scott M. Lephart. "Scapular Position and Orientation in Throwing Athletes." American Journal of Sports Medicine 33, no. 2 (February 2005): 263–71. http://dx.doi.org/10.1177/0363546504268138.

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Background Despite the recognized importance of proper 3-dimensional motion of the scapula in throwers, minimal research has quantified scapular position and orientation in throwing athletes. Hypothesis Throwing athletes exhibit scapular position and orientation differences when compared to nonthrowing control subjects. Study Design Descriptive laboratory study. Methods Scapular position and orientation during scapular plane humeral elevation were assessed with electromagnetic tracking in a group of 21 throwing athletes and 21 control subjects. Scapular upward/downward rotation, internal/external rotation, anterior/posterior tipping, elevation/depression, and protraction/retraction were assessed. Results The throwing athletes demonstrated significantly increased upward rotation, internal rotation, and retraction of the scapula during humeral elevation. No differences in anterior/posterior tipping and elevation/depression were present. Conclusions The results indicate that throwing athletes have scapular position and orientation differences compared to nonthrowing athletes. This suggests that throwers develop chronic adaptation for more efficient performance of the throwing motion. Clinical Relevance Clinicians evaluate scapular position, orientation, and movement in throwing athletes as part of the evaluation of shoulder injuries associated with the throwing motion. The current study provides clinicians with an understanding of the types of adaptations that may be observed in normal, healthy throwing athletes.

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11

Quinn, Joan M., and Anita C. Bundy. "Preliminary Normative Data on the Position of the Scapula in Normal Six-Year-Old Boys." Occupational Therapy Journal of Research 7, no. 1 (January 1987): 7–22. http://dx.doi.org/10.1177/153944928700700102.

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This study established preliminary normative data on the position of the scapula on the thorax in 91 normal 6-year-old hoys. Scapular abduction and upward tilt of the scapula were measured with a ruler and a beveled prOTRactor in four test positions. The data showed that multiple measurements were needed due to the high variability of scapular positioning across subjects. The most reliable and least variable of the four test positions was the quadruped position. Results provide therapists with acceptable guidelines for the range of scapular deviation in normal 6-year-old boys. Implications for further research are discussed.

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12

Janwantanakul, Prawit, Mark A. Jones, Mary E. Magarey, and Timothy S. Miles. "Characteristics of Shoulder-Position Sense: Effects of Mode of Movement, Scapular Support, and Arm Orientation." Journal of Sport Rehabilitation 11, no. 3 (August 2002): 157–68. http://dx.doi.org/10.1123/jsr.11.3.157.

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Context:Although the repositioning test is widely used to evaluate proprioception, the effects of several test-associated variables on the test outcome are not known.Objective:To determine the effects of mode of movement, scapular support, and arm orientation on shoulder-position sense.Participants:49 healthy, randomly selected men.Methods:The repositioning test was conducted in 4 settings in which mode of movement, scapular support, and arm orientation were manipulated differently.Main Outcome Measure:Position-sense acuity was quantified as repositioning accuracy and consistency.Results:Active limb movement significantly enhanced repositioning accuracy and consistency compared with passive movement. Repositioning consistency was significantly better when the scapula was supported than when it was not. Arm orientation had no significant effect on repositioning accuracy and consistency.Conclusion:The protocol for evaluating or rehabilitating shoulder proprioception should include active limb movement with the scapula unsupported to ensure that it refects a patient’s proprioceptive demand during functional activities.

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Hinson, Robert Ebo, Ibn Kailan Abdul-Hamid, and Ellis L. C. Osabutey. "Investigating market orientation and positioning in star-rated hotels in Ghana." International Journal of Contemporary Hospitality Management 29, no. 10 (October 9, 2017): 2629–46. http://dx.doi.org/10.1108/ijchm-02-2016-0075.

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Purpose Market orientation and positioning have been widely recognized as organizational metrics linked to hotel performance. The purpose of this study is to offer the link among market orientation, positioning and hotel performance in Ghana’s (luxury) hotel sector. It also reports on the joint influence of market orientation and positioning on hotel performance in the same sector. Design/methodology/approach Three hypotheses were investigated on the link between market orientation and hotel performance, positioning and hotel performance, and the joint effect of market orientation and positioning on hotel performance. A survey of star-rated (luxury) hotels in the capital city of Ghana was used. One hundred and five responses were used in the analysis. Descriptive statistics, exploratory factor analysis and hierarchical regression were used to test the three hypotheses. Findings All hypotheses were accepted. Market orientation and positioning jointly affect hotel performance, and the study provides hotel managers with suggestions on how to enhance their performance via market orientation and positioning. Research limitations/implications Market orientation, positioning, and performance measures focused on management perspectives without including perceptions of customers. Originality/value This study is one of the few attempts to systematically investigate the intertwined concepts of market orientation, positioning and performance in a developing economy hospitality context.

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Nicholson, Kristen F., R. Tyler Richardson, Freeman Miller, and James G. Richards. "Determining 3D scapular orientation with scapula models and biplane 2D images." Medical Engineering & Physics 41 (March 2017): 103–8. http://dx.doi.org/10.1016/j.medengphy.2017.01.012.

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Bergstralh, Dan T., Nicole S. Dawney, and Daniel St Johnston. "Spindle orientation: a question of complex positioning." Development 144, no. 7 (March 28, 2017): 1137–45. http://dx.doi.org/10.1242/dev.140764.

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Phillips, James G., Tom J. Triggs, and James W. Meehan. "Cursor Orientation and Computer Screen Positioning Movements." Human Factors: The Journal of the Human Factors and Ergonomics Society 43, no. 3 (September 2001): 435–41. http://dx.doi.org/10.1518/001872001775898241.

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Iyer, Pramod, Arezoo Davari, Mohammadali Zolfagharian, and Audhesh Paswan. "Market orientation, positioning strategy and brand performance." Industrial Marketing Management 81 (August 2019): 16–29. http://dx.doi.org/10.1016/j.indmarman.2018.11.004.

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18

Tregubov, A. S., D. A. Malanin, and L. L. Cherezov. "USING OF PERSONALIZED SCREW GUIDE FOR LATARGET PROCEDURE." Journal of Volgograd State Medical University 76, no. 4 (December 28, 2020): 160–64. http://dx.doi.org/10.19163/1994-9480-2020-4(76)-160-164.

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The advisability of using a personalized guide in patients with anterior instability of the shoulder joint during Latarget procedure is shown. A multiplanar reconstruction of postoperative CT was carried out and the position of the bone block of the graft in the sagittal and axial planes relative to the articular process of the scapula was assessed. The angle between the screws and the plane of the articular process of the scapula was also evaluated. The use of preoperative CT planning with the manufacture of a personalized guide for positioning and fixing the bone block of the graft during the Latargier operation allows to increase the accuracy of the restoration of the defect in the articular surface of the glenoid, to position the implants more correctly and thereby reduce the risks associated with damage to the suprascapular nerve branch.

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Oyama, Sakiko, Joseph B. Myers, Craig A. Wassinger, R. Daniel Ricci, and Scott M. Lephart. "Asymmetric Resting Scapular Posture in Healthy Overhead Athletes." Journal of Athletic Training 43, no. 6 (November 1, 2008): 565–70. http://dx.doi.org/10.4085/1062-6050-43.6.565.

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Abstract Context: Observation of the scapular posture is one of the most important components of the physical examination in overhead athletes. Postural asymmetry is typically considered to be associated with injuries. However, asymmetry in the overhead athlete's scapula may be normal due to the dominant use of the limb. Objective: To quantify the differences in resting scapular posture between the dominant and nondominant sides in 3 groups of healthy overhead athletes (baseball pitchers, volleyball players, and tennis players) using an electromagnetic tracking device. Design: Cross-sectional design. Setting: University-based biomechanics laboratory. Patients or Other Participants: A total of 43 players participated, including 15 baseball pitchers, 15 volleyball players, and 13 tennis players. All participants were healthy college-aged men. Intervention(s): Bilateral 3-dimensional scapular kinematics with the arm at rest were measured using an electromagnetic tracking device. Main Outcome Measure(s): Bilateral scapular position and orientation were measured. Between-groups and between-sides differences in each variable were analyzed using separate analyses of variance. Results: In tennis players, the scapula was more protracted on the dominant side than on the nondominant side (P < .05). In all overhead athletes, the dominant-side scapula was more internally rotated (P = .001) and anteriorly tilted (P = .001) than the nondominant-side scapula was. Conclusions: The dominant-side scapula of the overhead athletes was more internally rotated and anteriorly tilted than the nondominant-side scapula. The dominant-side scapula of the tennis players was more protracted than that on the nondominant side. Clinicians evaluating overhead athletes need to recognize that scapular posture asymmetry in unilateral overhead athletes may be normal. Our results emphasize the importance of the baseline evaluation in this population in order to accurately assess pathologic change in bilateral scapular positions and orientations after injury.

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Deng, Zhi-An, Zhiyu Qu, Changbo Hou, Weijian Si, and Chunjie Zhang. "WiFi Positioning Based on User Orientation Estimation and Smartphone Carrying Position Recognition." Wireless Communications and Mobile Computing 2018 (September 27, 2018): 1–11. http://dx.doi.org/10.1155/2018/5243893.

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Accuracy performance of WiFi fingerprinting positioning systems deteriorates severely when signal attenuations caused by human body are not considered. Previous studies have proposed WiFi fingerprinting positioning based on user orientation using compasses built in smartphones. However, compasses always cannot provide required accuracy of user orientation estimation due to the severe indoor magnetic perturbations. More importantly, we discover that not only user orientations but also smartphone carrying positions may affect signal attenuations caused by human body greatly. Therefore, we propose a novel WiFi fingerprinting positioning approach considering both user orientations and smartphone carrying positions. For user orientation estimation, we deploy Rotation Matrix and Principal Component Analysis (RMPCA) approach. For carrying position recognition, we propose a robust Random Forest classifier based on the developed orientation invariant features. Experimental results show that the proposed WiFi positioning approach may improve positioning accuracy significantly.

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Bigné, Enrique, Natalia Vila‐López, and Inés Küster‐Boluda. "Competitive positioning and market orientation: two interrelated constructs." European Journal of Innovation Management 3, no. 4 (December 2000): 190–98. http://dx.doi.org/10.1108/14601060010352443.

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Freedman, Adam P. "Measuring Earth orientation with the global positioning system." Bulletin Géodésique 65, no. 1 (March 1991): 53–65. http://dx.doi.org/10.1007/bf00806342.

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Fong, Chii Shyang, and Meng-Fu Bryan Tsou. "The Inner Compass of Spindle Positioning and Orientation." Developmental Cell 22, no. 3 (March 2012): 475–76. http://dx.doi.org/10.1016/j.devcel.2012.02.012.

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Lädermann, Alexandre, George S. Athwal, Hugo Bothorel, Philippe Collin, Adrien Mazzolari, Patric Raiss, and Caecilia Charbonnier. "Scapulothoracic Alignment Alterations in Patients with Walch Type B Osteoarthritis: An In Vivo Dynamic Analysis and Prospective Comparative Study." Journal of Clinical Medicine 10, no. 1 (December 27, 2020): 66. http://dx.doi.org/10.3390/jcm10010066.

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Background: Kinematic changes of the scapulothoracic joint may influence the relative position of the glenoid fossa and, consequently, the glenohumeral joint. As the alignment of the scapula relative to the thorax differs between individuals, such variability may be another factor in the development of posterior head subluxation. The purpose of this study was to compare scapulothoracic alignment in pathologic type B shoulders with contralateral healthy shoulders. Methods: Seven adult volunteers with unilateral type B glenohumeral osteoarthritis (OA) underwent bilateral computed tomography (CT) scans of the shoulders and arms. A patient-specific, three-dimensional measurement technique that coupled medical imaging (i.e., CT) and optical motion capture was used. Results: The scapulothoracic distance at the trigonum was 75 ± 15 mm for pathologic shoulders and 78 ± 11 mm for healthy shoulders (p = 0.583), while at the inferior angle, it was 102 ± 18 mm for pathologic shoulders and 108 ± 12 mm for healthy shoulders (p = 0.466). Conclusion: Scapula positioning at a resting position did not differ between pathologic and healthy shoulders. However, pathologic shoulders tended to be limited in maximal glenohumeral motion and exhibited greater anterior tilt of the scapula in internal rotation at 90 degrees, which may be adaptive to the restricted glenohumeral motion.

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Bi, Jingxue, Yunjia Wang, Xin Li, Hongji Cao, Hongxia Qi, and Yongkang Wang. "A novel method of adaptive weighted K-nearest neighbor fingerprint indoor positioning considering user’s orientation." International Journal of Distributed Sensor Networks 14, no. 6 (June 2018): 155014771878588. http://dx.doi.org/10.1177/1550147718785885.

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There are many factors affecting Wi-Fi signal in indoor environment, among which the human body has an important impact. And, its characteristic is related to the user’s orientation. To eliminate positioning errors caused by user’s human body and improve positioning accuracy, this study puts forward an adaptive weighted K-nearest neighbor fingerprint positioning method considering the user’s orientation. First, the orientation fingerprint database model is proposed, which includes the position, orientation, and the sequence of mean received signal strength indicator at each reference point. Second, the fuzzy c-means algorithm is used to cluster orientation fingerprint database taking the hybrid distance of the signal domain and position domain as the clustering feature. Finally, the proposed adaptive algorithm is developed to select K-reference points by matching operation, to remove the reference points with larger signal-domain distances, minimum and maximum coordinate values, and calculate the weighted mean coordinates of the remaining reference points for positioning results. The experimental results show that the average error decreases by 0.7 m, and the root mean square error decreases to about 1.3 m by the proposed technique. And, we conclude that the proposed adaptive weighted K-nearest neighbor fingerprint positioning method can improve positioning accuracy.

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Chaudhary, Neha, Luis Nero Alves, and Zabih Ghassemlooy. "Impact of Transmitter Positioning and Orientation Uncertainty on RSS-Based Visible Light Positioning Accuracy." Sensors 21, no. 9 (April 27, 2021): 3044. http://dx.doi.org/10.3390/s21093044.

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This paper present simulation-based results on the impact of transmitter (Tx) position and orientation uncertainty on the accuracy of the visible light positioning (VLP) system based on the received signal strength (RSS). There are several constraining factors for RSS-based algorithms, particularly due to multipath channel characteristics and set-up uncertainties. The impact of Tx uncertainties on positioning error performance is studied, assuming a statistical modelling of the uncertainties. Simulation results show that the Tx uncertainties have a severe impact on the positioning error, which can be leveraged through the usage of more transmitters. Concerning a smaller Tx’s position uncertainty of 5 cm, the average positioning errors are 23.3, 15.1, and 13.2 cm with the standard deviation values of 6.4, 4.1, and 2.7 cm for 4-, 9-, and 16-Tx cases, respectively. While for a smaller Tx’ orientation uncertainty of 5°, the average positioning errors are 31.9, 20.6, and 17 cm with standard deviation values of 9.2, 6.3, and 3.9 cm for 4-, 9-, and 16-Tx cases, respectively.

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de Castro, Marcelo P., Daniel Cury Ribeiro, Felipe de C. Forte, Joelly M. de Toledo, Daniela Aldabe, and Jefferson F. Loss. "Shoulder Kinematics Is Not Influenced by External Load During Elevation in the Scapular Plane." Journal of Applied Biomechanics 30, no. 1 (February 2014): 66–74. http://dx.doi.org/10.1123/jab.2012-0083.

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The current study aimed to compare the shoulder kinematics (3D scapular orientation, scapular angular displacement and scapulohumeral rhythm) of asymptomatic participants under unloaded and loaded conditions during unilateral shoulder elevation in the scapular plane. We used a repeated-measures design with a convenience sample. Eleven male participants with an age range of 21–28 years with no recent history of shoulder injury participated in the study. The participants performed isometric shoulder elevation from a neutral position to approximately 150 degrees of elevation in the scapular plane in intervals of approximately 30 degrees during unloaded and loaded conditions. Shoulder kinematic data were obtained with videogrammetry. During shoulder elevation, the scapula rotated upwardly and externally, and tilted posteriorly. The addition of an external load did not affect 3D scapular orientation, scapular angular displacement, or scapulohumeral rhythm throughout shoulder elevation (P> .05). In clinical practice, clinicians should expect to observe upward and external rotation and posterior tilt of the scapula during their assessments of shoulder elevation. Such behavior was not influenced by an external load normalized to 5% of body weight when performed in an asymptomatic population.

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Kalafatis, Stavros P., Charles Blankson, Marvyn Luxly Boatswain, and Markos H. Tsogas. "Preference for action: regulatory mode in B2B positioning decision-making." Journal of Business & Industrial Marketing 35, no. 12 (May 8, 2020): 2111–25. http://dx.doi.org/10.1108/jbim-04-2019-0145.

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Purpose Grounded in regulatory mode theory (RMT), this study aims to investigate the impact of managers’ orientation for action (locomotion and assessment) in business-to-business positioning decision-making. Design/methodology/approach Data are collected using a scenario-based experimental design. Study 1 examines whether interest and involvement in recommending a positioning strategy depends on a manager’s regulatory mode orientation. The impact of such orientations on the likelihood of changing a recommended positioning strategy is the focus of Study 2. The moderating effects of task motivation (expected rewards resulting from a recommendation), market feedback and the line manager’s leadership style are examined. Findings Both assessment and locomotion are significant determinants of involvement in recommending a positioning strategy. The introduction of motivation as a moderator helps explain differences in level of interest in positioning decision-making. Locomotion, but not assessment, affects the likelihood of changing a recommended positioning strategy. Assessment amplifies the impact of locomotion, while none of the interaction effects between regulatory mode orientation and contextual factors is a significant determinant of changing a positioning strategy. Originality/value To the best of the authors’ knowledge, this is the first application of RMT on positioning decision-making. Results from two experiments provide novel insights into the predictive relevance of managers’ preference in terms of involvement with the decision-making process and the likelihood of altering positioning.

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Tabără, Iulian Alexandru. "Positioning and Orientation Requirements for Robotic Assembly by Insertion." Applied Mechanics and Materials 162 (March 2012): 423–28. http://dx.doi.org/10.4028/www.scientific.net/amm.162.423.

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Based on the relative positions of the parts to be assembled, positions imposed by the technological process of insertion, the conditions required to perform a predetermined operation have been defined. The relations that express the relative positions and orientations of the axes of the parts to be assembled have been determined. These expressions enable the establishment of the functional requirements imposed on the robot. We have taken into consideration the influence of robot accuracy on its positioning and orientation repeatability.

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Zhang Xiaoyue, 张小跃, 林志立 Lin Zhili, and 张春熹 Zhang Chunxi. "High accuracy positioning and orientation based on laser velocimeter." High Power Laser and Particle Beams 26, no. 3 (2014): 31012. http://dx.doi.org/10.3788/hplpb20142603.31012.

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Hile, Harlan, and Gaetano Borriello. "Positioning and Orientation in Indoor Environments Using Camera Phones." IEEE Computer Graphics and Applications 28, no. 4 (July 2008): 32–39. http://dx.doi.org/10.1109/mcg.2008.80.

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32

Krall, Alfred H., and Thomas B. Bahder. "Orientation and velocity effects in the global positioning system." Journal of Applied Physics 90, no. 12 (December 15, 2001): 6513–25. http://dx.doi.org/10.1063/1.1417993.

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Yang, Peng, Li Xie, and Jilin Liu. "Simultaneous celestial positioning and orientation for the lunar rover." Aerospace Science and Technology 34 (April 2014): 45–54. http://dx.doi.org/10.1016/j.ast.2011.07.003.

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Skouta, Katerina. "Dipole Positioning Recognition Using Neural Networks." Key Engineering Materials 605 (April 2014): 673–76. http://dx.doi.org/10.4028/www.scientific.net/kem.605.673.

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A ships position could be detected by its magnetic signature. A crucial issue, regarding this approach for naval vessel monitoring, is the difficulty in defining the appropriate number of magnetic sensors needed and their respective configuration, in order to predict accurately the position of the magnetic mass through the measured magnetic field intensities on a specific boundary. In the present paper, this problem is dealt downscaled at tracing the exact position and orientation of a single dipole. In particular, Neural Networks, properly calibrated, are implemented as a method for the detection of the position and the orientation of a dipole through the measured magnetic field inducted. The results indicate that measurements of two magnetic field sensors at the boundary could provide sufficient information about the dipoles position, with a certainty of 99%.

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Neiva, Patrícia Dayrell, Renata Noce Kirkwood, and Ricardo Godinho. "Orientation and position of head posture, scapula and thoracic spine in mouth-breathing children." International Journal of Pediatric Otorhinolaryngology 73, no. 2 (February 2009): 227–36. http://dx.doi.org/10.1016/j.ijporl.2008.10.006.

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Klinger, Cristiano Pinto, Elvis Silveira-Martins, Gabriela Jurak de Castro, and Carlos Ricardo Rossetto. "Strategic positioning, differentiation and performance of Brazilian wineries." International Journal of Wine Business Research 32, no. 2 (November 14, 2019): 219–46. http://dx.doi.org/10.1108/ijwbr-11-2018-0068.

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Purpose The purpose of this study is to verify whether managers’ strategic orientation influences decision-making related to differentiation and whether these two factors impact on the performance of the firms in the Brazilian wine industry. Design/methodology/approach A survey was conducted with representatives from 123 wineries located in the following Brazilian states: 78.86 per cent in Rio Grande do Sul; 13.01 per cent in Santa Catarina; 2.44 per cent in Paraná; 2.44 per cent in São Paulo; 1.63 per cent in Bahia; and 1.63 per cent in Pernambuco. The data were analyzed using multivariate statistical techniques, resulting in a structural equations model of the constructs. Findings The research findings show that there is a positive association between prospector orientation and differentiation. Analyst positioning was negatively associated with differentiation of winery companies. It was also possible to show that differentiation has a positive relationship with performance. Originality/value While a previous study attempted to identify wineries’ strategic orientation using other theoretical constructs, this study makes a contribution to consolidating reflections on strategic orientation focused on differentiation and performance. The results contribute to expanding the scientific debate by filling a gap in existing theory and also provide information of use to decision-makers, demonstrating, which approaches improve differentiation, and hence, performance.

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Modan, Gabriella, and Amy Shuman. "Positioning the interviewer: Strategic uses of embedded orientation in interview narratives." Language in Society 40, no. 1 (February 2011): 13–25. http://dx.doi.org/10.1017/s0047404510000850.

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AbstractThe structure and function of a sociolinguistic interview sets up a context that affords informants the opportunity to achieve their own goals. We examine how an informant manipulates the reception format of the speech event, using embedded orientation to characterize information as alternately given or new, and the interviewer consequently as an insider or outsider. Whereas previous analyses have examined how embedded orientation highlights or sheds light on information in complicating action clauses, we posit that the content of embedded orientation clauses is important in and of itself. Rather than serving as simply background information, embedded orientation can do important ideological work. In the case here, embedded orientation introduces into the narrative traces of a local story—the history of local Fascism, a topic that is rarely discussed in the teller's community. (Embedded orientation, narrative, sociolinguistic interview)

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Xing, Qiang, Zhen Dong Dai, and Hao Wang. "A Method of Rapid Position Estimation." Applied Mechanics and Materials 461 (November 2013): 781–85. http://dx.doi.org/10.4028/www.scientific.net/amm.461.781.

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Initiation of insect’s optomotor reaction, researchers developed the element movement detector (EMD) in motion detection. The detector can estimate the motion parameters of the moving target quickly in 2-D spatial orientation, such as angular velocity and angular rotation. Based on the function of compound eyes, we promoted a fast positioning EMD model. It has the ability in positioning in 3-D spatial orientation with wide field of view (FOV). And then we did some experiments to verify that the positioning algorithm had higher estimation accuracy of position in time.

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Avrorin, A. D., A. V. Avrorin, V. M. Aynutdinov, R. Bannash, I. A. Belolaptikov, V. B. Brudanin, N. M. Budnev, et al. "Spatial positioning of underwater components for Baikal- GVD." EPJ Web of Conferences 207 (2019): 07004. http://dx.doi.org/10.1051/epjconf/201920707004.

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Baikal-GVD is a cubic kilometer-scale neutrino telescope currently under construction in Lake Baikal. The detector’s components are mobile and may drift from their initial coordinates or change their spatial orientation. This introduces a reconstruction error, particularly a timing error for PMT hits. This problem is mitigated by a combination of a hydroacoustic positioning system and per-component acceleration and orientation sensors. Under regular conditions, the average positioning accuracy for a GVD component is estimated to be less than 13 cm.

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Riccobene, Giorgio. "The Positioning system for KM3NeT." EPJ Web of Conferences 207 (2019): 07005. http://dx.doi.org/10.1051/epjconf/201920707005.

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The paper describes the implementation of a hybrid positioning system based on tilt and compass sensors, integrated into an electronic board, and an acoustic positioning system to be installed aboard KM3NeT. The acoustic system will be capable to fulfil detector relative and absolute positioning, to provide data for cross-fertilisation with Earth and Sea science (bio-acoustics and environmental monitoring) and to allow studies for neutrino acoustic detection. Tilt and Compass boards installed in each optical module provide information about the DOM orientation.

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Seldin, Lindsey, and Ian Macara. "Epithelial spindle orientation diversities and uncertainties: recent developments and lingering questions." F1000Research 6 (June 23, 2017): 984. http://dx.doi.org/10.12688/f1000research.11370.1.

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Mitotic spindle orientation is a conserved, dynamic, and highly complex process that plays a key role in dictating the cleavage plane, fate, and positioning of cells within a tissue, therefore laying the blueprint for tissue structure and function. While the spindle-positioning pathway has been extensively studied in lower-model organisms, research over the past several years has highlighted its relevance to mammalian epithelial tissues. Although we continue to gain critical insights into the mechanisms underlying spindle positioning, many uncertainties persist. In this commentary, we will review the protein interactions that modulate spindle orientation and we will present important recent findings that underscore epithelial tissue-specific requirements and variations in this important pathway, as well as its potential relevance to cancer.

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de Cesar Netto, Cesar, Jackson Staggers, Walter Smith, Sung Lee, Sierra Phillips, Martim Pinto, Alexandre Godoy Dos Santos, Lauren Roberts, Bahman Sahranavard, and Ashish Shah. "First Tarsometatarsal Joint Shape and Orientation." Foot & Ankle Orthopaedics 3, no. 3 (July 1, 2018): 2473011418S0020. http://dx.doi.org/10.1177/2473011418s00203.

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Category: Bunion Introduction/Purpose: Studies have demonstrated that patients with hallux valgus (HV) deformities have increased mobility in the first tarsometatarsal (TMT) joint. Anatomical factors widely considered to play a role in the instability are shape and frontal plane orientation of the joint. An oblique rather than horizontal orientation of the articular surfaces and a round shape, rather than a flat shape, are believed to predispose to the deformity. The purpose of this study was to assess whether the shape and angulation of the first TMT joint are affected by the positioning of the foot and orientation of the x-ray beam. Methods: Ten adult above knee fresh frozen cadaveric specimens were used, with a mean age of 79.9 (range, 54-88) years. There were no clinical forefoot deformities noted in any of the feet. One of the specimens had moderate ankle arthritis and one had a mild cavus-varus. A radiolucent loading apparatus was built that, allowing neutral positioning of a plantigrade foot and controlled angulation of 5o, 10 o, 15o and 20o in dorsiflexion, plantarflexion, inversion and eversion. Fluoroscopic images were obtained of each cadaveric specimen in all seventeen different positions, with the x-ray beam perpendicular to the floor and aiming to the base of the 1st metatarsal. Two blinded orthopaedic surgeons independently measured the 1st tarsometatarsal (TMT) joint angle and graded the distal articular cartilage of the medial cuneiform as flat or curved. Readers also graded the image quality into assessing the joint into “Low”, “Intermediate” and “Good”. Results: 1st TMT joint angle was 112.92o ± 6.89o. Values were significantly different between cadaveric specimens (p<.0001). There was a tendency for increased valgus angulation of the joint in images positioned in neutral, plantarflexion and inversion and decreased valgus angulation with dorsiflexion and eversion.Regarding the shape of the distal articular cartilage of the medial cuneiform, joints with flat configuration showed significantly increased mean 1st TMT joint angle when compared to curved surfaces (115.9o vs. 110.7o, p<.0001). In 8 out of 10 of the cadaveric specimens (80%) the shape of the 1st TMT joint changed between curved or flat configuration depending on the positioning of the foot. In only 2/10 (20%) the joint configuration remained the same for all different positions (one flat and one curved). Conclusion: Our cadaveric study found that the shape and angulation of the first TMT joint is affected by the positioning of the foot and orientation of the x-ray beam. Clinical usefulness of the 1st TMT radiographic anatomical characteristics is limited and should not influence in the treatment of patients with possible instability the first tarsometatarsal (TMT) joint.

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Pierrynowski, M. R. "Quantifying scapula orientation and its influence on maximal hand force capability and shoulder muscle activity." Yearbook of Sports Medicine 2010 (January 2010): 70–71. http://dx.doi.org/10.1016/s0162-0908(10)79680-x.

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McAdams, T. R. "Quantifying scapula orientation and its influence on maximal hand force capability and shoulder muscle activity." Yearbook of Hand and Upper Limb Surgery 2011 (January 2011): 190–91. http://dx.doi.org/10.1016/j.yhls.2011.04.028.

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Picco, Bryan R., Steven L. Fischer, and Clark R. Dickerson. "Quantifying scapula orientation and its influence on maximal hand force capability and shoulder muscle activity." Clinical Biomechanics 25, no. 1 (January 2010): 29–36. http://dx.doi.org/10.1016/j.clinbiomech.2009.09.008.

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Zebehazy, Kim T., Rebecca L. Renshaw, and George J. Zimmerman. "Positioning Practices of Orientation and Mobility Specialists When Teaching Street Crossings: Is There a Standard Approach?" Journal of Visual Impairment & Blindness 115, no. 2 (March 2021): 85–94. http://dx.doi.org/10.1177/0145482x211000947.

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Introduction: An important skill for orientation and mobility (O&M) specialists to have is to monitor clients appropriately when they are learning to cross intersections. Techniques books provide some suggestions for positioning during street crossings, but no research has been conducted about consensus or priorities for making appropriate decisions on positioning. The purpose of this study was to investigate general positioning decisions using visual monitoring techniques. Method: A total of 234 participants (practicing O&M specialists, preservice O&M students, and O&M university personnel) completed a 40-question survey. The survey included demographic questions, diagrams of intersections that participants used to select positioning locations, questions about lanes of threat, and questions about important factors to consider when positioning to monitor safety. Commonality of selections were analyzed and compared with demographic information. Results: The greatest consensus was found for all intersection types when the client is positioned on the corner waiting to cross and for identification of the first lane of threat. More variable position selections were made for monitoring during the crossings, and the second and third lane of threat selections were also more variable. Factors respondents indicated as most important to consider when positioning aligned with their positioning choices overall. Discussion: Personnel preparation programs may want to consider to what extent they teach considerations for positioning before and during crossings, and whether the predominant tendency to put oneself between the client and traffic warrants additional conversation. Future research should look at more complex intersections and the additional nuances used to make positioning choices. Implications for practitioners: Practitioners should reflect on whether they actively change their positioning decisions based on the situation and type of intersection versus tending to use a standard strategy.

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Urde, Mats, and Christian Koch. "Market and brand-oriented schools of positioning." Journal of Product & Brand Management 23, no. 7 (November 11, 2014): 478–90. http://dx.doi.org/10.1108/jpbm-11-2013-0445.

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Purpose – The purpose of this paper is to revise the concept of positioning to differentiate between fundamental approaches to it and chart a scheme of schools of positioning. Design/methodology/approach – An extensive literature review traces the roots and evolution of the concept. Two approaches to positioning are explored and related to the paradigms of market and brand orientation. Based on current theory and practice, different schools of positioning are identified and categorized along a market- and brand-orientation spectrum. Metaphors differentiate schools of positioning, illustrated by case examples. Findings – Positioning is a key concept in marketing, branding and strategy. However, its theoretical and practical usefulness is in peril due to its many meanings, applications and overall vagueness. There is a need for a theoretical overview of positioning, which the literature currently lacks. Two approaches to define a brand’s position are identified and introduced: market- and brand-oriented positioning. Five principal schools of positioning show how these are different and why differentiating between them matters. The choice of school implies the market- and/or brand-oriented approach to positioning. Research limitations/implications – Further empirical case-based research might investigate when, what and how different positioning schools are applied in practice. The brief cases in this paper indicate a dynamic over time regarding the applications of the brand- and market-oriented school of positioning. An in-depth theoretical and practical investigation of the dynamics of positions would be of value for the research field. Practical implications – The distinction among different schools of thought helps bridge the gap between the theory and practice of positioning. A specific positioning objective can guide management in the selection of a particular school of positioning, which enables management to make more insightful conscious choices regarding its opportunities, limitations and consequences. Social implications – Position and positioning is of relevance in society in broad terms, e.g. in sports, politics and culture. Positioning strategy is discussed and implemented in different industries (business-to-business and consumer), for all kinds of brands (including, for instance, corporate brands) and for “brands” in the very widest sense (such as places or people). Originality/value – This paper relates positioning to the fundamental discussion of brand and market orientation. It integrates positioning research and provides a structured overview of the concept.

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WU Liang, 吴量, 王建立 WANG Jian-li, and 王昊京 WANG Hao-jing. "Three FOV celestial positioning and orientation with minimum loss function." Optics and Precision Engineering 23, no. 3 (2015): 904–12. http://dx.doi.org/10.3788/ope.20152303.0904.

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Overeem, Arend W., David M. Bryant, and Sven C. D. van IJzendoorn. "Mechanisms of apical–basal axis orientation and epithelial lumen positioning." Trends in Cell Biology 25, no. 8 (August 2015): 476–85. http://dx.doi.org/10.1016/j.tcb.2015.04.002.

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Bompard, Guillaume, and Nathalie Morin. "p21-activated kinase 4 regulates mitotic spindle positioning and orientation." BioArchitecture 2, no. 4 (July 2012): 130–33. http://dx.doi.org/10.4161/bioa.21132.

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