Academic literature on the topic 'Limited joint mobility'

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Journal articles on the topic "Limited joint mobility"

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Bracamonte, Jesus (Jesse) D., Gretchen Anderson, and Molly Kresin. "Limited Joint Mobility Syndrome." Consultant 60, no. 3 (March 3, 2020): 91–93. http://dx.doi.org/10.25270/con.2020.03.00007.

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Aljahlan, Mohammad, Kwok-Choy Lee, and Ellen Toth. "Limited joint mobility in diabetes." Postgraduate Medicine 105, no. 2 (February 1999): 99–106. http://dx.doi.org/10.3810/pgm.1999.02.536.

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Gopinath, S., K. Manoj, and Rubiya. "Goniometry in limited joint mobility." Indian Journal of Endocrinology and Metabolism 16, no. 8 (2012): 443. http://dx.doi.org/10.4103/2230-8210.104125.

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Tasker, PRW. "Limited Joint Mobility - ?Prayer sign?" Practical Diabetes International 18, no. 1 (January 2001): 26. http://dx.doi.org/10.1002/pdi.154.

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Chang, Dillon E., Lois P. Buschbacher, and Richard F. Edlich. "Limited joint mobility in power lifters." American Journal of Sports Medicine 16, no. 3 (May 1988): 280–84. http://dx.doi.org/10.1177/036354658801600315.

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Campbell, R. R., S. J. Hawkins, P. J. Maddison, and J. P. Reckless. "Limited joint mobility in diabetes mellitus." Annals of the Rheumatic Diseases 44, no. 2 (February 1, 1985): 93–97. http://dx.doi.org/10.1136/ard.44.2.93.

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Dijs, HM, JM Roofthooft, MF Driessens, PG De Bock, C. Jacobs, and KL Van Acker. "Effect of physical therapy on limited joint mobility in the diabetic foot. A pilot study." Journal of the American Podiatric Medical Association 90, no. 3 (March 1, 2000): 126–32. http://dx.doi.org/10.7547/87507315-90-3-126.

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Eleven patients with limited joint mobility and neuropathy were enrolled in a physical therapy program of passive joint mobilization at a rate of two sessions per week. Treatment resulted in a significant improvement in joint mobility after 10 sessions. Further improvement after 20 sessions did not reach the level of statistical significance, although near-normal joint mobility was attained. After completion of therapy, there was a progressive deterioration in joint mobility. No serious adverse effects were noted during treatment. This study provides some evidence that use of physical therapy may result in significant, although temporary, improvement in the mobility of the ankle and foot joints in diabetic patients with limited joint mobility and neuropathy. As limited joint mobility has been associated with the development of abnormally high pressures under the feet, which in turn may contribute to plantar ulceration in the susceptible neuropathic foot, the results indicate that physical therapy may be useful in the prevention of plantar ulceration in diabetic patients with limited joint mobility and neuropathy, although this must be verified by additional research.
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Panevin, T. S., L. I. Alekseeva, and G. A. Melnichenko. "LIMITED JOINT MOBILITY SYNDROME IN DIABETES MELLITUS." Rheumatology Science and Practice 58, no. 3 (June 24, 2020): 330–35. http://dx.doi.org/10.14412/1995-4484-2020-330-335.

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Patients with diabetes mellitus (DM) often show changes in the locomotor apparatus (LMA), in particular cheiroarthropathy, a specific lesion of the connective tissue structures of the hand in the presence of persistent hyperglycemia, which leads to limited joint mobility (LJM) generally in the absence of pain syndrome. Some authors use the term «LJM syndrome» to describe LMA lesion in DM, since in the long course of the disease, the small and large joints of not only the upper, but also the lower limbs are involved in the pathological process. LJM is one of the little studied and poorly diagnosed conditions in comparison with traditional micro- and macro-vascular complications of DM, which, due to their direct correlation with life expectancy, receive more attention. The LJM syndrome is associated with other late complications of DM and can significantly impair functional activity, self-care, and quality of life. Damages to periarticular tissue and joints in DM are believed to be caused by the accumulation of glycation end products. A clinical examination plays a key role in the diagnosis of cheiroarthropathy.
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Frank, Robert N. "Sorbinil and Limited Joint Mobility in Diabetics." JAMA: The Journal of the American Medical Association 254, no. 11 (September 20, 1985): 1452. http://dx.doi.org/10.1001/jama.1985.03360110042017.

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Rosenbloom, Arlan L. "Sorbinil and Limited Joint Mobility in Diabetics." JAMA: The Journal of the American Medical Association 254, no. 11 (September 20, 1985): 1453. http://dx.doi.org/10.1001/jama.1985.03360110042019.

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Dissertations / Theses on the topic "Limited joint mobility"

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Duffin, Anthony C., University of Western Sydney, of Science Technology and Environment College, and of Science Food and Horticulture School. "Structural and functional changes in the feet of young people with Type 1 diabetes mellitus." THESIS_CSTE_SFH_Duffin_A.xml, 2002. http://handle.uws.edu.au:8081/1959.7/408.

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Diabetes can affect the structure and function of the foot, resulting in severe limitation of mobility and reduction of life expectancy. Early warning signs include limited joint mobility (LJM), soft tissue changes, high plantar pressure (HPP), high pressure time integrals (P/TI) and plantar callus. These abnormalities were examined in 216 young people with diabetes and 57 controls. The fingers, toes, ankle subtalar and first metatarsophalangeal joints shows reduced motion and the plantar aponeurosis was thicker in diabetic subjects. Skin thickness was the same for diabetic and control subjects. LJM in the feet was more common in males and older subjects. Subtalar and finger LJM was associated with early sensory nerve changes and finger LJM was associated with retinopathy and higher HbAtc. Thicker plantar aponeurosis was associated with male gander and larger feet. High peak pressure, high P/TI and callus were no more common in diabetic subjects than controls. However, high P/TI and callus were associated with early sensory nerve changes in young people with diabetes. Diabetic subjects with callus were significantly older than those without callus. Those with HPP had higher body mass index and less motion at the first MTP joints than those without HPP. Although plantar callus, HPP and high P/TI were no more common in young people with diabetes these abnormailities may be complicated by diabetes. Cushioning, custom orthoses or both in combination significantly reduced peak pressure and P/TI in diabetic subjects.
Doctor of Philosophy (PhD)
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Frasco, Joana dos Santos. "Prospective evaluation of limited joint mobility in type 1 Diabetes Mellitus: from adolescence to adulthood." Master's thesis, 2014. https://repositorio-aberto.up.pt/handle/10216/73926.

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Frasco, Joana dos Santos. "Prospective evaluation of limited joint mobility in type 1 Diabetes Mellitus: from adolescence to adulthood." Dissertação, 2014. https://repositorio-aberto.up.pt/handle/10216/73926.

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Redmond, Christine Lorraine. "Hand conditions associated with diabetes: an observational study characterising hand function." Thesis, 2011. http://hdl.handle.net/2440/68760.

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In Chapter 1 of this thesis, I review the literature relating to the hand syndromes associated with diabetes. I describe their unique clinical features and current treatment options. I consider how these hand syndromes may contribute to physical disability in diabetes and formulate questions relating to the degree and the course of this disability. In Chapter 2, I describe and discuss the rationale for selecting the methods used to measure hand function. The methods used to measure disability and quality of life from the individual’s perspective and evaluate motor and sensory impairments of the hand are explained. Other data that was collected, such as body weight, height and information on diabetes duration and control, are discussed. The sample size required to detect a change in hand function is calculated and the clinics from which study participants were recruited are outlined. In Chapter 3, I describe the characteristics of the sample of adults with diabetes and the associated hand syndromes at their first assessment. My analysis of the factors that predicted hand disability at the initial presentation in this heterogeneous group is presented. In Chapters 4, I describe the change in hand function measured over the second and third assessments and determine the factors that were associated with this change. My analysis is extended to examine differences between the dominant and non-dominant hands and between men and women. In Chapter 5, I consider the precision of measures of hand function and discuss how this affected the data obtained. Minimal detectable changes are analysed and recommendations regarding hand assessments are made. In Chapter 6, I summarize the evidence that carpal tunnel syndrome and trigger finger contributed to hand disability in adults with diabetes. In addition to specific treatment strategies for these disorders strategies to address broader health issues are recommended. A greater emphasis should be given to strengthening the upper limb and implementing strategies to address physical inactivity and obesity in adults with diabetes.
Thesis (Ph.D.) -- University of Adelaide, School of Medicine, 2011
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Berliner, Dominik [Verfasser]. "Untersuchungen der Mikrozirkulation bei diabetischen Patienten mittels Laser-Doppler-Flowmetrie und Messung des transkutanen Sauerstoffpartialdrucks unter besonderer Berücksichtigung der limited joint mobility / vorgelegt von Dominik Berliner." 2008. http://d-nb.info/1000177416/34.

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Duffin, Anthony C. "Structural and functional changes in the feet of young people with Type 1 diabetes mellitus." Thesis, 2002. http://handle.uws.edu.au:8081/1959.7/408.

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Diabetes can affect the structure and function of the foot, resulting in severe limitation of mobility and reduction of life expectancy. Early warning signs include limited joint mobility (LJM), soft tissue changes, high plantar pressure (HPP), high pressure time integrals (P/TI) and plantar callus. These abnormalities were examined in 216 young people with diabetes and 57 controls. The fingers, toes, ankle subtalar and first metatarsophalangeal joints shows reduced motion and the plantar aponeurosis was thicker in diabetic subjects. Skin thickness was the same for diabetic and control subjects. LJM in the feet was more common in males and older subjects. Subtalar and finger LJM was associated with early sensory nerve changes and finger LJM was associated with retinopathy and higher HbAtc. Thicker plantar aponeurosis was associated with male gander and larger feet. High peak pressure, high P/TI and callus were no more common in diabetic subjects than controls. However, high P/TI and callus were associated with early sensory nerve changes in young people with diabetes. Diabetic subjects with callus were significantly older than those without callus. Those with HPP had higher body mass index and less motion at the first MTP joints than those without HPP. Although plantar callus, HPP and high P/TI were no more common in young people with diabetes these abnormailities may be complicated by diabetes. Cushioning, custom orthoses or both in combination significantly reduced peak pressure and P/TI in diabetic subjects.
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Books on the topic "Limited joint mobility"

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Halligan, Eugene P. A study of collagen abnormalities in subjects with limited joint mobility and their role in the development of diabetic complications. Dublin: University College Dublin, 1995.

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Herman, Mira, Amaresh Vydyanathan, and Allan L. Brook. Sacroiliac Joint Injections: Computed Tomography. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199908004.003.0039.

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Sacroiliac (SI) joint disease is a common cause of low back pain. It is not easily diagnosed by physical examination, as the joint has limited mobility and referral patterns are not sufficiently delineated from other pathological conditions implicated in low back pain. The accuracy of provocative testing of the sacroiliac joint is controversial. Many physicians use injection of the SI joint with local anesthetic and/or steroid as a diagnostic and therapeutic tool in treating SI joint–related pain. Historically, SI joint intra-articular injections have been performed without imaging guidance. Imaging-guided techniques, often using CT fluoroscopy, increase the precision of these procedures and help confirm needle placement while achieving better results and reduced complications rates. Sacroiliac joint injection is routinely performed on an outpatient basis. The patient is questioned regarding previous steroid use (oral, cutaneous, or injected) to avoid iatrogenic Cushing syndrome. Repeat injections can be administered depending on patient’s response.
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Yang, Sarah T., and Tariq M. Malik. Chronic Shoulder Pain. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190271787.003.0009.

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Chronic shoulder pain has multiple etiologies, including tendon tears (rotator cuff or biceps tendon), subacromial impingement (leading to subacromial bursitis or tendinitis), osteoarthritis, and shoulder joint instability. The condition is often associated with limited mobility; therefore, most interventions aim at preserving range of motion. Among the various treatment modalities, physical therapy is an effective first intervention. Corticosteroid injections do not necessarily help all chronic shoulder pain but may allow effective physical therapy for functional improvement. Multimodal analgesics and modulating agents (anti-inflammatories, antiepileptics, etc.) can also be used as part of a conservative regimen. Surgery is recommended when conservative therapy fails.
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Shaibani, Aziz. Muscle Stiffness and Cramps. Oxford University Press, 2015. http://dx.doi.org/10.1093/med/9780199898152.003.0020.

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Muscle stiffness is a nonspecific term meaning limited muscle mobility that is not due to weakness. It is opposite to flexibility. Muscle and joint pain may be described as stiffness. Painful sustained muscle cramps are usually associated with muscle stiffness. A careful history is paramount. Exercise-induced muscle cramps are usually myopathic (metabolic or mitochondrial myopathy), while resting and nocturnal cramps are neurogenic (neuropathy, motor neuron disease, etc). Metabolic cramps are electrically silent. Focal or generalized stiffness is typically seen in stiff person syndrome. Upper motor neuron lesions are associated with spasticity and stiffness (HSP, PLS, myelopathies, etc.). Painful cramps and fasciculations are important clues to peripheral nerve hyperexcitability disorder, which may also present with neuromyotonia. Not unusually, no cause is found for muscle cramps and stiffness. Symptomatic treatment frequently helps.
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Shaibani, Aziz. Muscle Stiffness and Cramps. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190661304.003.0020.

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Muscle stiffness as a nonspecific term means limited muscle mobility. Muscle and joint pain may be described as stiffness. Painful, sustained muscle cramps are usually associated with muscle stiffness. A careful history is paramount. Exercise-induced muscle cramps are usually myopathic (metabolic or mitochondrial myopathy) while resting, and nocturnal cramps are neurogenic [neuropathy, motor neuron disease (MND), etc.]. Metabolic cramps are electrically silent. Focal or generalized stiffness is typically seen in stiff person syndrome (SPS). Upper motor neuron (UMN) lesions are associated with spasticity and stiffness [hereditary spastic paraplegia (HSP), primary lateral sclerosis (PLS), myelopathies, etc.]. Painful cramps and fasciculation are important clues to peripheral nerve hyperexcitability disorder, which may also present with neuromyotonia. Not unusually, no cause is found for muscle cramps and stiffness. Symptomatic treatment frequently helps.
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Frawley, Geoff. Mucopolysaccharidoses. Oxford University Press, 2013. http://dx.doi.org/10.1093/med/9780199764495.003.0064.

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The mucopolysaccharidoses (MPS) are a group of seven chronic progressive diseases caused by deficiencies of 11 different lysosomal enzymes required for the catabolism of glycosaminoglycans (GAGs). Hurler syndrome (MPS IH) is an autosomal recessive storage disorder caused by a deficiency of α‎-L-iduronidase. Hunter syndrome (MPS II) is an X-linked recessive disorder of metabolism involving the enzyme iduronate-2-sulfatase. Many of the MPS clinical manifestations have potential anesthetic implications. Significant airway issues are particularly common due to thickening of the soft tissues, enlarged tongue, short immobile neck, and limited mobility of the cervical spine and temporomandibular joints. Spinal deformities, hepatosplenomegaly, airway granulomatous tissue, and recurrent lung infections may inhibit pulmonary function. Odontoid dysplasia and radiographic subluxation of C1 on C2 is common and may cause anterior dislocation of the atlas and spinal cord compression.
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Hems, T. E. J. Reconstruction after nerve injury. Oxford University Press, 2011. http://dx.doi.org/10.1093/med/9780199550647.003.006009.

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♦ Late reconstructive procedures may improve function if there is persisting paralysis after nerve injury♦ Transfer of a functioning musculotendinous unit to the tendon of the paralysed muscle is the most common type of procedure♦ Passive mobility must be maintained in affected joints before tendon transfer can be performed♦ The transferred muscle should be expendable, have normal power, and have properties appropriate to the function it is required to restore♦ Tendon transfers can provide reliable improvement in function after isolated radial nerve palsy♦ A number of procedures have been described for reconstruction of thumb opposition but impaired sensation after median nerve injury may limit gain in function♦ Tendon transfers are possible to improve clawing of fingers and lateral pinch of the thumb after ulnar nerve palsy or other cases of intrinsic paralysis.
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Book chapters on the topic "Limited joint mobility"

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Pendsey, Sharad. "Limited Joint Mobility (LJM)." In Diabetic Foot: A Clinical Atlas, 58. Jaypee Brothers Medical Publishers (P) Ltd., 2003. http://dx.doi.org/10.5005/jp/books/11473_18.

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"Mobility (LJM) Limited Joint." In Diabetic Foot, 133–38. CRC Press, 2013. http://dx.doi.org/10.1201/9780203485613-17.

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Holleman, F. "Limited Joint Mobility (revision number 8)." In Diapedia. Diapedia.org, 2011. http://dx.doi.org/10.14496/dia.71040851516.8.

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Goodfellow, John, John O'Connor, Hemant Pandit, Christopher Dodd, and David Murray. "Introduction and Historical Overview." In Unicompartmental Arthroplasty with the Oxford Knee. Goodfellow Publishers, 2015. http://dx.doi.org/10.23912/978-1-910158-45-6-4342.

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Osteoarthritis of the knee is one of the most common causes of painful loss of mobility in middle-aged and elderly people in many populations and is the main indication for knee replacement surgery. From the early days of arthroplasty, it was recognised that arthritis was often limited to the medial (or lateral) compartment of the knee and, in the pioneering operation of MacIntosh 1 , metal spacers could be used in one compartment or both. Gradually, however, as the advantages of bicompartmental arthroplasty were appreciated, unicompartmental (or partial) replacement was less and less practised, and in some countries almost disappeared. With the introduction of tricompartmental replacement, a large body of surgical opinion concluded that osteoarthritis of the knee was a disease of the whole joint (like osteoarthritis of the hip) and that common sense required the replacement of all the articular surfaces to provide long-term relief of symptoms.
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Segal, Yoram, Ofer Hadar, and Lenka Lhotska. "Assessing Human Mobility by Constructing a Skeletal Database and Augmenting it Using a Generative Adversarial Network (GAN) Simulator." In Studies in Health Technology and Informatics. IOS Press, 2022. http://dx.doi.org/10.3233/shti220967.

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This paper presents a neural network simulator based on anonymized patient motions that measures, categorizes, and infers human gestures based on a library of anonymized patient motions. There is a need for a sufficient training set for deep learning applications (DL). Our proposal is to extend a database that includes a limited number of videos of human physiotherapy activities with synthetic data. As a result of our posture generator, we are able to generate skeletal vectors that depict human movement. A human skeletal model is generated by using OpenPose (OP) from multiple-person videos and photographs. In every video frame, OP represents each human skeletal position as a vector in Euclidean space. The GAN is used to generate new samples and control the parameters of the motion. The joints in our skeletal model have been restructured to emphasize their linkages using depth-first search (DFS), a method for searching tree structures. Additionally, this work explores solutions to common problems associated with the acquisition of human gesture data, such as synchronizing activities and linking them to time and space. A new simulator is proposed that generates a sequence of virtual coordinated human movements based upon a script.
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Conference papers on the topic "Limited joint mobility"

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Vennelakanti, Ravigopal, Malarvizhi Sankaranarayanasamy, Ramyar Saeedi, Rahul Vishwakarma, Prasun Singh, Jian Sun, Yushi Akiyama, and Hisao Adachi. "Multimodal Mobility Framework: Towards Seamless Mobility Experience." In 2021 Joint Rail Conference. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/jrc2021-58377.

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Abstract Mobility is no longer just a necessity for travelers, but choices among several possible routes and transportation modes. Urban passenger rail transport plays an essential role because it is affordable, convenient, safe, and fast. On the other hand, rail lines are limited to high passenger density corridors. Inevitably, rail has to be placed together with different transport modes, forming a multimodal network. However, to enable this integration with other modes of transport, numerous practical problems remain, such as making a smooth transition from the existing siloed, mode specific operational structure towards an interconnected system of transportation modes and business models for a seamless connected journey. The current isolated operational structure lacks a single truth and accurate visibility, which further discourages participation from augmenting transportation modes and leads to the extended reaction time for new technology integration. This research article introduces a Multimodal Mobility (MMM) solution framework that provides a functional interface to integrate and synchronize the railroad operations with other public transit networks (including train-bus-rapid transits) and micro-mobility services. The known approach to addressing the users’ seamless mobility experience entails a centralized, prearranged, a priori knowledge and mechanism for operating intermodal transport systems. In contrast, the method defined in this paper focuses on a market-driven demand-responsive system that allows for dis-intermediation in a network of peer-level transportation modes operations. The framework facilitates blockchain-based decentralized and multi-organizational engagement. The focus here is the role of railroad in the multimodal ecosystem and its performance advancements in this integrated solutions framework. Leveraging a combination of graph analytics and machine learning algorithms, we provide methods to address challenges in encoding spatial and temporal dependencies of multimodal transit networks and handle complex optimization problems such as mixed time window and volume variation for resource allocation and transit operational analytics. This enables operation of different transit modes with varied resolution and flexibility for operational parameters like time, capacity, ridership, revenue management, etc. The analytics enable solutions for recommendations on synchronizing and integrating operations of transportation systems. Further, the network’s decentralization and modular handling enable market-driven co-optimization of operational resources across various transportation modes to ensure seamless transit experience for users.
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Lee, Yuyu, Michi Kanda, Jiarui Zu, Fangqing Zhengren, George Chernyshov, and Kai Kunze. "Smart eyewear enabled interactive pet toy for users with limited mobility." In UbiComp '19: The 2019 ACM International Joint Conference on Pervasive and Ubiquitous Computing. New York, NY, USA: ACM, 2019. http://dx.doi.org/10.1145/3341162.3343821.

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Mollo, Kimberly, Kyndra Adams, Andrew Berger, Eric Schneider, and Tod Corlett. "Empowering Individuals with Limited Joint Mobility: An Embedded Interdisciplinary Program between Occupational Therapy and Industrial Design." In 13th International Conference on Applied Human Factors and Ergonomics (AHFE 2022). AHFE International, 2022. http://dx.doi.org/10.54941/ahfe1001655.

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This paper highlights the third consecutive year of an ongoing, embedded interdisciplinary collaborative program between Occupational Therapy Doctoral (OTD) and Master of Industrial Design (design) students and faculty co-creating assistive devices that improve participation in tasks and activities for individuals living with Fibrodysplasia Ossificans Progressiva (FOP). FOP is a rare and progressive genetic disease, causing an individual's muscles, tendons, and ligaments to turn to bone, resulting in fixation and immobility. During the 9-month collaborative experience, OTD and design students co-conducted 2 sets of interviews with FOP clients identifying activities of daily living that were problematic secondary to individual disease course. OTD students administered the Canadian Occupational Performance Measure (COPM) to identify which daily routines and activities were impacted. Design students employed standardized questions to clarify how their activities were performed. Findings informed initial assistive device prototypes, which were then sent to FOP clients for user testing. After testing was completed, design students continued to prototype and conducted a second feedback interview. This program also included several interprofessional educational experiences designed by the OTD students for their design peers under occupational therapy (OT) and design faculty supervision. Content was created to reinforce FOP clients’ needs and was delivered through shared learning modules, activities, and peer-to-peer discussion. Weekly collaboration occurring in design coursework between disciplines and use of OT-related tools such as the COPM helped the design students leverage their skills by contextualizing what they observed when interacting with FOP clients, ultimately creating better products that met the needs of individuals with FOP. Findings presented include current data up to February 2022 from OTD and design interviews and FOP user feedback; data collection and prototyping will continue through May 2022. Outcomes demonstrated and reinforced the need for consistent, higher-level embedded interdisciplinary collaborative approaches that uniquely meet the needs of clients experiencing complex medical issues and help to expand the usability of assistive devices for other populations with complex issues.
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Tian, L., G. Ahmadi, and J. Y. Tu. "Brownian Diffusion of Nano-Fibers: Application to Mobility Characterizations." In ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/ajkfluids2019-4652.

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Abstract In this study, the Brownian diffusion of elongated nano-fibers was investigated numerically. Motions of nano-fibers of different sizes and aspect ratios were resolved by solving the corresponding system of equations governing their coupled translational and rotational motions. The study allowed a close examination of the Brownian diffusion of nano-fibers with respect to the coupling of their translational and rotational motions and how the rotation affects the fibrous particle macroscopic diffusion properties. Particular attention was given to the rotational relaxation time in determining the isotropic and anisotropic diffusive properties of elongated particles. Theoretical and semi-empirical equations were developed to quantify the diffusion coefficients of nano-fibers. Orientation averaged mobility of the nanofiber, nanorod and non-spherical nano-agglomerates was examined by the newly developed Brownian diffusion model. The result was compared with the particle mobility by collision limited reaction rate theory, empirical models and the experimental measurements. The study led to the discovery of a surface dominated mobility for nanoparticles with Knudsen number greater than 5 (Kn > 5). For particles in this range, all morphologies can be viewed as point collision and therefore the use of the equivalent surface mobility diameter was reasonably justified. Beyond this range when Kn < 0.1, however, the study showed that the particle morphology starts to play an important role, and accuracy of the surface mobility approximation reduces as the Knudsen number decreases. The study opened up new approaches for studying fundamental diffusive processes of nano-particles of complex shapes which are numerous in natural environment.
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Blum, Michelle M., and Timothy C. Ovaert. "Synthesis and Characterization of Boundary Lubricant-Functionalized PVA Gels for Biotribological Applications." In ASME 2010 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2010. http://dx.doi.org/10.1115/sbc2010-19281.

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Hyaline cartilage is a material which exhibits ideal tribological properties by maintaining naturally low friction, leading to high wear resistance in articulating joints. When damage to hyaline cartilage occurs, due to diseases such as osteoarthritis or traumatic tissue injuries, tissue regeneration is limited due to cartilage’s avascular and aneural nature. The resulting bone-on-bone contact causes serious pain and limited mobility. Current treatment options are limited to total or partial joint replacements, which are not ideal procedures due to long term failure of components and osteolysis. A vastly improved material is desirable, which better mimics the structure and excellent tribological behavior of natural cartilage.
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de Vries, Charlotte, and Matthew B. Parkinson. "Identifying Glenoid Geometries Through Radial Basis Functions for Implant Design." In ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/detc2014-35478.

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Total Shoulder Arthroplasty is performed on patients to restore range of motion of the shoulder and decrease pain caused by osteoarthritis at the glenohumeral joint. The glenohumeral joint is a slightly unstable ball and socket joint, where muscles hold the humerus in contact with the glenoid, located on the scapula. Improper sizing or alignment of the implant can cause the surgery to fail to restore mobility to the shoulder or only restore mobility for a limited time. Additionally, placement of the glenoid implant on the scapula is complicated by the limited view available during surgery and the deformation of the glenoid caused by osteoarthritis. Implant designs must take into account the large amount of variability present in both intact and osteoarthritic joints. The purpose of this research is to provide a morphable glenoid representation for the scapula to assist with preoperative planning and implant design. CT scans of healthy and osteoarthritic glenoids were provided by Hershey Medical Center for this study. Principal component analysis and radial basis functions are used to represent a range of potential glenoid geometries, both with and without osteoarthritis. This parametric model can be used to guide the design and sizing of implants. This approach should be extensible to the modeling of other bony surfaces, which can improve both implant design and surgical procedure.
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McCluskey, Thomas L., Mauro Vallati, and Santiago Franco. "Automated Planning for Urban Traffic Management." In Twenty-Sixth International Joint Conference on Artificial Intelligence. California: International Joint Conferences on Artificial Intelligence Organization, 2017. http://dx.doi.org/10.24963/ijcai.2017/776.

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The global growth in urbanisation increases the demand for services including road transport infrastructure, presenting challenges in terms of mobility. Optimising the exploitation of urban road network, while attempting to minimise the effects of traffic emissions, is a great challenge. SimplyfAI was a UK research council grant funded project which was aimed towards solving air quality problems caused by road traffic emissions. Large cities such as Manchester struggle to meet air quality limits as the range of available traffic management devices is limited. In the study, we investigated the application of linked data to enrich environmental and traffic data feeds, and we used this with automated planning tools to enable traffic to be managed at a region level. The management will have the aim of avoiding air pollution problems before they occur. This demo focuses on the planning component, and in particular the engineering and validation aspects, that were pivotal for the success of the project.
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8

Farelo, Fabian, Redwan Alqasemi, and Rajiv Dubey. "Autonomous Control and Simulation of a Wheelchair Mounted Robotic Arm Performing Activities of Daily Living Tasks." In ASME 2009 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2009. http://dx.doi.org/10.1115/sbc2009-206878.

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A wheelchair-mounted robotic arm was designed and developed to enhance the capabilities of mobility-impaired persons with limited upper extremities limitations exceeding previous models specifications and performance [1]. The major enhancements of the wheelchair’s mechanical design are the incorporation of DC servo drive with encoders at each individual joint. The arm has seven degrees of freedom (DoF) and is side-mounted on a power wheelchair (fig 1). The control system allows coordinated Cartesian control, and offers expandability for research in combined mobility and manipulation. This paper discusses the control scheme and a virtual simulation of the existing WMRA prototype performing several activities of daily living.
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9

Moses, Matthew S., M. Kendal Ackerman, and Gregory S. Chirikjian. "Origami Rotors: Imparting Continuous Rotation to a Moving Platform Using Compliant Flexure Hinges." In ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/detc2013-12753.

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A mechanism that admits continuous free rotation between a fixed platform and a rotating body is described. The mechanism is a serial kinematic chain with several revolute joints. The end of the kinematic chain has free and unlimited rotational motion, equivalent to a standard mechanical pivot, but the travel of each individual joint in the chain is limited to less than ±70 degrees. The joints that compose the chain can thus be constructed using compliant flexure hinges. The entire mechanism can be folded from a single flat sheet of material, and is thus well suited for self-assembly by folding, which is an increasingly attractive technique for building micro-scale devices. Potential applications include rotating propellers for micro underwater or fluid-immersed (e.g. within a blood vessel) robots, and high-mobility wheel-legs for crawling vehicles.
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10

Ozkul, Mine Cuneyitoglu, Afsar Saranli, and Yigit Yazicioglu. "Acoustic Surface Perception for Improved Mobility of Legged Robots." In ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/detc2012-70638.

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A dynamically dexterous legged robot has the distinct property that the legs are continuously interacting with the environment. During walking and running, this interaction generates acoustic signals that carry considerable information about the surface being traversed, state of the robot legs and joint motors as well as the stability of the locomotion. Extracting a particular piece of information from this convolved acoustic signal however is an interesting and challenging area of research which we believe may have fundamental benefits for legged robotics research. For example, the identification of the surface that the robot travels on gives us the ability to dynamically adapt gait parameters hence improve dynamic stability. In the present paper, we investigate this particular sub-problem of surface identification using naturally occurring acoustic signals and present our results. We show that a spectral energy based feature set augmented by time derivatives and an average zero crossing rate carries enough information to accurately classify a number of commonly occurring indoor and outdoor surfaces using a popular higher dimensional vector quantizer classifier. Our experiments also suggest that VQ surface models may be velocity dependent. These initial results with a carefully collected but relatively limited dataset indicate a promising direction for our future research on improving outdoor mobility for dynamic legged robots.
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