Journal articles: 'User adjustable'

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Bobisuthi, James F. "Headset with user adjustable frequency response." Journal of the Acoustical Society of America 104, no. 3 (1998): 1150. http://dx.doi.org/10.1121/1.424275.

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Guo, Junhong, Yining Liu, Ling Li, Xiaoqiang Xue, Jingya Su, and Haowen Ouyang. "Design of the user-side contract power transfer transaction mechanism considering adjustable loads." E3S Web of Conferences 256 (2021): 01013. http://dx.doi.org/10.1051/e3sconf/202125601013.

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In recent years, to cope with the increasing uncertainty of load side, the adjustability of load side is constantly improved. However, the power deviation of user side hasn’t been well adjusted due to the lack of the channel. This not only makes users face higher risks, but also makes incomplete use of sufficient load side adjustable resources. One of the effective ways to solve the problems above is user-side contract power transfer transaction. In this paper, main forms of adjustable load in major fields are discussed at first, then the user-side contract power transfer transaction mechanism considering adjustable load is proposed, finally the validity of the proposed mechanism is verified by a study case.

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KIM, Jaehong, Sangjae LEE, and Sehun KIM. "An Adjustable Scheduling Algorithm for Multi-User MIMO Systems." IEICE Transactions on Communications E92-B, no. 2 (2009): 527–32. http://dx.doi.org/10.1587/transcom.e92.b.527.

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LaViola, Joseph J., and Odest Chadwicke Jenkins. "Natural User Interfaces for Adjustable Autonomy in Robot Control." IEEE Computer Graphics and Applications 35, no. 3 (May 2015): 20–21. http://dx.doi.org/10.1109/mcg.2015.61.

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江, 和松. "An Evaluation Method for Weibo User Influence with Adjustable Parameters." Computer Science and Application 09, no. 01 (2019): 78–88. http://dx.doi.org/10.12677/csa.2019.91010.

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Yuan, Zhenlong, Jie Xu, Yibo Xue, and Mihaela van der Schaar. "Bits Learning: User-Adjustable Privacy Versus Accuracy in Internet Traffic Classification." IEEE Communications Letters 20, no. 4 (April 2016): 704–7. http://dx.doi.org/10.1109/lcomm.2016.2521837.

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Morishita, H., J. Tamura, T. Mori, T. Harada, and T. Sato. "Development of Active Lighting Device Adjustable to User and User's Action." Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2003 (2003): 28. http://dx.doi.org/10.1299/jsmermd.2003.28_2.

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Chaerani, Diah, Naufal Badruzzaman, Elis Hertini, and Endang Rusyaman. "Designing Graphical User Interface (GUI) for Adjustable Robust Maximum Flow Problem." Jurnal Matematika Integratif 17, no. 1 (August 5, 2021): 63. http://dx.doi.org/10.24198/jmi.v17.n1.30288.63-72.

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Aucella, Arlene F., Thomas Kirkham, Susan Barnhart, Lawrence Murphy, and Kris LaConte. "Improving Ultrasound Systems by User-Centered Design." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 38, no. 11 (October 1994): 705–9. http://dx.doi.org/10.1177/154193129403801101.

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A series of user-centered design methods were applied during the development of an ultrasound system. The methods included hospital site visits, interviews with sonographers, videotapes of examinations and usability testing with simulations of the console and displays. Based on user feedback and preferences, over one-hundred design changes were made to both the console and control panel. The resulting system accommodates users through an adjustable control panel and display monitor. In addition, the control panel and corresponding operator interface software reflects frequency-of-use and sequencing-of-use of functions, leading to more efficient interaction with the system.

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CHOI, WON-SEUK, JUN-MIN LEE, TAE YOUNG KIM, JUNG HWAN KIM, JUNG AH LEE, and HYUN CHOI. "DEVELOPMENT OF ADJUSTABLE WHEELCHAIR TRAINING STRUCTURE AND VALIDATION OF USEFULNESS FOR EVALUATION AND TRAINING OF MANUAL WHEELCHAIR SKILL." Journal of Mechanics in Medicine and Biology 20, no. 10 (December 2020): 2040032. http://dx.doi.org/10.1142/s0219519420400321.

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As the number of wheelchair users increases, safety accidents related to wheelchairs are increasing. Wheelchair training has been emphasized as a way to deal with this problem. Therefore, this study aimed to develop a wheelchair training structure as an adjustable type and verify its usefulness. Methods: In order to develop the wheelchair training structure as an adjustable type, idea meetings were held by related experts. The structure reflecting the ideas generated by the expert meetings was drawn through 3D modeling and it was produced by a commissioned woodwork shop. Then the final products including the adjustable curb and stairs were evaluated to verify their effectiveness and user satisfaction. Ten physical or occupational therapists rated satisfaction using the Korean-Quebec User Evaluation of Satisfaction with Assistive Technology, and four manual wheelchair users rated effectiveness using the wheelchair Skill Test-Questionnaire 5.0. And the evaluations were conducted twice before and after the 10 wheelchair training sessions each with 30 min duration. Results the result of satisfaction evaluation of the adjustable curbs and stairs by the 10 therapists showed that effectiveness was the highest, and the size and weight were the lowest. As for the effectiveness evaluation by the four manual wheelchair users, both the capacity and confidence of all subjects improved. Conclusion: This study confirmed that training using this type of wheelchair training construct will help wheelchair users improve the confidence and skills of using wheelchair which are essential for their safety and independent mobility. Therefore, if the adjustable curbs and stairs are to be used in the rehabilitation process of early manual wheelchair users, it is expected to contribute to the advancing their successful social return.

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Schofield, Jonathon S., Katherine R. Schoepp, Michael Stobbe, Paul D. Marasco, and Jacqueline S. Hebert. "Fabrication and application of an adjustable myoelectric transhumeral prosthetic socket." Prosthetics and Orthotics International 43, no. 5 (March 29, 2019): 564–67. http://dx.doi.org/10.1177/0309364619836353.

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Background and Aim: Although upper limb myoelectric prostheses can offer improved functionality and dexterity over body-powered systems, abandonment rates remain high. User dissatisfaction in comfort and control are among the top contributors. The design of the prosthetic socket must be comfortable, while maintaining contact of control electrodes with the residual limb throughout the day. We present a myoelectric socket design that provides user-adjustable compression over electrode control sites to promote consistent control, while maintaining comfort and fit. Technique: A cable tensioning system was threaded through a series of paneled windows in the socket wall over electrode sites. Adjusting tension provided tuning of electrode contact. Discussion: A case study of a single transhumeral prosthetic user with a follow-up interview 11 months post delivery suggests that our adjustable design has the potential to address control and comfort challenges, critical factors in myoelectric prosthetic use, and abandonment. Clinical relevance Achieving consistent electrode contact with muscle control sites in traditional rigid sockets is a critical challenge for myoelectric prostheses. We present a unique solution via user-adjustable electrode contacts built into the socket.

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Wang, Wenjin, Xiqi Gao, Fu-Chun Zheng, and Wen Zhong. "CP-OQAM-OFDM Based SC-FDMA: Adjustable User Bandwidth and Space-Time Coding." IEEE Transactions on Wireless Communications 12, no. 9 (September 2013): 4506–17. http://dx.doi.org/10.1109/twc.2013.072613.121650.

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Xirouchaki, Nectaria, Eumorfia Kondili, Maria Klimathianaki, and Dimitris Georgopoulos. "Is proportional-assist ventilation with load-adjustable gain factors a user-friendly mode?" Intensive Care Medicine 35, no. 9 (June 16, 2009): 1599–603. http://dx.doi.org/10.1007/s00134-009-1524-2.

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Nazir, Fakhera, Muhammad Mohsin Riaz, Abdul Ghafoor, and Fahim Arif. "Flood Detection/Monitoring Using Adjustable Histogram Equalization Technique." Scientific World Journal 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/809636.

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Flood monitoring technique using adjustable histogram equalization is proposed. The technique overcomes the limitations (overenhancement, artifacts, and unnatural look) of existing technique by adjusting the contrast of images. The proposed technique takes pre- and postimages and applies different processing steps for generating flood map without user interaction. The resultant flood maps can be used for flood monitoring and detection. Simulation results show that the proposed technique provides better output quality compared to the state of the art existing technique.

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Yin, Li Li, and Ru Bo Zhang. "Situation Reasoning in an Integrating Adjustable Autonomy Framework." Key Engineering Materials 467-469 (February 2011): 1691–96. http://dx.doi.org/10.4028/www.scientific.net/kem.467-469.1691.

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Currently, integrating adjustable autonomy framework are increasingly involved in future warfighters in complex task environments. The adjustable autonomy system must know what the user is doing, what needs to be done in the present situation, and the comparative strengths for of the human and the system in each task. Towards reasoning the situation, we are working on situation reasoning in an integrating adjustable autonomy framework of unmanned surface platform. This article provides a summary of various related work, ranging from situation awareness to performance capacity level assessment and impact assessment. In the end, we use visualization to display the process of the situation reasoning.

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B., Nadimulla, and Aruna Mastani, S. "Adjustable PRPG for Low Power Test Patterns." International Journal of Recent Technology and Engineering 9, no. 6 (March 30, 2021): 195–201. http://dx.doi.org/10.35940/ijrte.f5500.039621.

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As the power consumption is more in the processes of testing, test vector set compression and controlling of toggling plays a crucial role in reducing the power consumption during test mode. In exploring the controlling techniques of toggling, Pre-Selected Toggling (PRESTO) of test patterns is a technique that can control the toggling of a test patterns in a precise manner in Built-in Self -Test (BIST) architectures. In this paper we modify the architecture of existing Full Version PRESTO that can be used to generate test vectors and in addition binary sequences used as scan chins such that the controlling of sequence of test vectors depends on number of 1’s present in the switch code which is user defined thus reducing the testing time with significant fault coverage, and in addition the optimization is also observed in area and power. The area has decreased by 12.2% and power consumption by 15.43%. The Synthesis and implementation of the architectures are done using Artix7 (xc7a100tcsg324-3) FPGA family. The simulation results have been analyzed through Mentor-graphics Questa-sim 10.7C

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Kimura, Suguru, Takeo Kato, and Yoshiyuki Matsuoka. "A Proposal of Robust Design Method for Deriving Adjustable Range." Advanced Materials Research 311-313 (August 2011): 2332–35. http://dx.doi.org/10.4028/www.scientific.net/amr.311-313.2332.

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Due to increased individuation of user needs and market globalization, the demands for product performance have diversified. However, a diversified performance is difficult to be obtained a unique design solution (design value). In a previous study, the robust design method (RDM), which ensures products with a robust performance under diverse conditions, was improved. This method was used to evaluate performance robustness with respect to an adjustable control factor (ACF), which is a factor that can be adjusted by the user. Unfortunately, the RDM is not applicable to design problems that have several ACFs due to the increased calculation amount. To resolve this issue, this study improves the previous method by applying a genetic algorithm and a method to extract the values of ACFs employed in the robustness calculation. The improved RDM was applied to two numerical examples to confirm its effectiveness.

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Crane, Barbara, Douglas Hobson, and Stephen Stadelmeier. "Development and Testing of an Innovative User-Adjustable Support Surface for Wheelchair Seating Discomfort." Assistive Technology 22, no. 3 (August 25, 2010): 152–62. http://dx.doi.org/10.1080/10400430903519936.

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Cao, Feng, Chao Zhang, Hao Yu Choo, and Hirotaka Sato. "Insect–computer hybrid legged robot with user-adjustable speed, step length and walking gait." Journal of The Royal Society Interface 13, no. 116 (March 2016): 20160060. http://dx.doi.org/10.1098/rsif.2016.0060.

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We have constructed an insect–computer hybrid legged robot using a living beetle ( Mecynorrhina torquata ; Coleoptera). The protraction/retraction and levation/depression motions in both forelegs of the beetle were elicited by electrically stimulating eight corresponding leg muscles via eight pairs of implanted electrodes. To perform a defined walking gait (e.g. gallop), different muscles were individually stimulated in a predefined sequence using a microcontroller. Different walking gaits were performed by reordering the applied stimulation signals (i.e. applying different sequences). By varying the duration of the stimulation sequences, we successfully controlled the step frequency and hence the beetle's walking speed. To the best of our knowledge, this paper presents the first demonstration of living insect locomotion control with a user-adjustable walking gait, step length and walking speed.

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Mattie, Johanne, Angie Wong, Danny Leland, and Jaimie Borisoff. "End user evaluation of a Kneeling Wheelchair with “on the fly” adjustable seating functions." Disability and Rehabilitation: Assistive Technology 14, no. 6 (April 18, 2018): 543–54. http://dx.doi.org/10.1080/17483107.2018.1462861.

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Piwetz, Christian, Frank Eiffert, Helmut Heck, and Bruno Müller-Clostermann. "An adjustable user interface providing transparent access to application programs for the physically disabled." ACM SIGCAPH Computers and the Physically Handicapped, no. 51 (January 1995): 11–16. http://dx.doi.org/10.1145/224474.224477.

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Ajao, K. R., T. Yahaya, H. A. Ajimotokan, A. A. Adeleke, M. Bello, and O. Ojegbenro. "Design and Fabrication of an Adjustable Sitting Inclinations Spinal Cord Rehabilitation Chair." Technological Engineering 13, no. 1 (October 1, 2016): 12–14. http://dx.doi.org/10.2478/teen-2016-0004.

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Abstract The adjustable sitting inclination rehabilitation chair was fabricated with mild steel and soft upholstered fabric was used for the overlay on the seat, headrest and armrest. The components were coupled with a linear actuator at the upper frame for the reclining of the backrest about it axis. The wheels are located outboard of the seat of the chair to enhance stability while foot rest supports the posterior weight of the users. The narrow seat allows free movement of the leg when the user is seated. Sitting inclinations of 120 and 135° protect the spine disc from compression and proffer more comfort for the users than other angles experimented. The adjustable sitting inclination SCRC is simple and affordable for low-income people with Spinal cord injury, especially for those in developing countries in order to support other therapies for their recovery processes.

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Duarte, Diego Santos, and Ricardo Manfredi Naveiro. "Proposal of an alternative concept of the manually adjustable hospital bed for user experience improvement." Product Management & Development 18, no. 2 (2020): 122–35. http://dx.doi.org/10.4322/pmd.2020.032.

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Driyanskii, V. M., and G. V. Zhogov. "Model for determination of the information needs of user in adjustable documentary information retrieval systems." Cybernetics 22, no. 4 (1987): 507–12. http://dx.doi.org/10.1007/bf01075082.

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Broydé, Frédéric, and Evelyne Clavelier. "A Tuning Computation Technique for a Multiple-Antenna-Port and Multiple-User-Port Antenna Tuner." International Journal of Antennas and Propagation 2016 (2016): 1–15. http://dx.doi.org/10.1155/2016/4758486.

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A multiple-user-port antenna tuner having the structure of a multidimensionalπ-network has recently been disclosed, together with design equations which assume lossless circuit elements. This paper is about the design of this type of antenna tuner, when losses are taken into account in each circuit element of the antenna tuner. The problem to be solved is the tuning computation, the intended results of which are the reactance values of the adjustable impedance devices of the antenna tuner, which provide an ideal match, if such reactance values exist. An efficient iterative tuning computation technique is presented and demonstrated.

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Kuber, Pranav Madhav, and Ehsan Rashedi. "Assessing the Ergonomic Benefits of a New Adjustable Forklift Backrest." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 64, no. 1 (December 2020): 976–80. http://dx.doi.org/10.1177/1071181320641235.

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A new forklift backrest has been developed by incorporating adjustability concepts into the design to facilitate comfort to a wide range of users. We have conducted a comparative study between the new and original backrests to assess the effectiveness of design features. Using the phenomenon of restlessness, discomfort of the user was associated with the amount of body movement, where we have used a motion- capture system and a force platform to quantify the individuals’ movement for a wide range of body sizes. Meanwhile, subjective comfort and design feedback were collected using a questionnaire. Our results showed a reduction in the mean torso movement and the maximum center of pressure change of location by 300 and 6 mm, respectively, for the new design. Taking advantage of adjustability feature, the new backrest design exhibited enhanced comfort for longer durations and reduced magnitude of discomfort for a wide range of participants’ body sizes.

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Liu, Dunnan, Tingting Zhang, Weiye Wang, Xiaofeng Peng, Mingguang Liu, Heping Jia, and Shu Su. "Two-Stage Physical Economic Adjustable Capacity Evaluation Model of Electric Vehicles for Peak Shaving and Valley Filling Auxiliary Services." Sustainability 13, no. 15 (July 21, 2021): 8153. http://dx.doi.org/10.3390/su13158153.

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A large number of renewable energy and EVs (electric vehicles) are connected to the grid, which brings huge peak shaving pressure to the power system. If we can make use of the flexible characteristics of EVs and effectively aggregate the adjustable resources of EVs to participate in power auxiliary services, this situation can be alleviated to a certain extent. In this paper, a two-stage physical and economic adjustable capacity evaluation model of EVs for peak shaving and valley filling ancillary services is constructed. The main steps are as follows: with the help of the deep learning ability of the AC (Actor-Critic) algorithm, the optimal physical charging scheme of EV fleet is determined to minimize the grid fluctuation under the travel constraints of private EVs, and the optimized charging power is transferred to the second stage. In the second stage, load aggregators encourage users to participate in ancillary services by setting subsidy prices. In this stage, the model constructs a user decision model based on a logistic function to describe the probability of users accepting dispatching instructions. With the goal of maximizing the revenue of load aggregators, the wolf colony algorithm is used to solve the optimal solution of the time-sharing subsidy level, and finally the economic adjustable capacity of the EV fleet considering the subjective decision of users is obtained.

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Abdelrahman, Amro M., Bethany R. Lowndes, Anita T. Mohan, Shelley S. Noland, Dawn M. Finnie, Valerie Lemaine, and M. Susan Hallbeck. "Surgeons’ Perspectives on User-Designed Prototypes of Microsurgery Armrests." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 62, no. 1 (September 2018): 1047–51. http://dx.doi.org/10.1177/1541931218621241.

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Microsurgery is considered one of the most demanding surgical techniques. In a recent American Society of Reconstructive Microsurgeons survey, respondents reported that about half their procedures lasted 8 hours or longer and 8% had tremor during their surgery. Thus, the aim of this study was to define user centered design requirements for a microsurgery armrest, create low-fidelity armrest design concepts and evaluate microsurgeons’ perspectives on the advantages/disadvantages of five potential design concepts. Direct and videotaped observations of microsurgery, user brainstorming during a co-creation workshop and semi-structured interviews were used. The resulting five microsurgery armrest concepts were presented pictorially through semi-structured interviews, where microsurgeons defined armrest design requirements as: a) an armrest that allows the surgeons to be as close as possible to the patient; b) adjustable to accommodate different procedures sites and surgeon preferences; c) rigid enough to support arms; d) is not difficult to set up; nor e) large or bulky; and f) complies with operative sterility rules. This study illustrated how involving the users (microsurgeons) early in the design process provides useful perspectives on design requirements and implementation barrier for a cost-effective ergonomic microsurgery armrest to foster sound ergonomic surgical practice and reduce musculoskeletal health risk factors during microsurgery.

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Scerri, P., D. V. Pynadath, and M. Tambe. "Towards Adjustable Autonomy for the Real World." Journal of Artificial Intelligence Research 17 (September 1, 2002): 171–228. http://dx.doi.org/10.1613/jair.1037.

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Adjustable autonomy refers to entities dynamically varying their own autonomy, transferring decision-making control to other entities (typically agents transferring control to human users) in key situations. Determining whether and when such transfers-of-control should occur is arguably the fundamental research problem in adjustable autonomy. Previous work has investigated various approaches to addressing this problem but has often focused on individual agent-human interactions. Unfortunately, domains requiring collaboration between teams of agents and humans reveal two key shortcomings of these previous approaches. First, these approaches use rigid one-shot transfers of control that can result in unacceptable coordination failures in multiagent settings. Second, they ignore costs (e.g., in terms of time delays or effects on actions) to an agent's team due to such transfers-of-control. To remedy these problems, this article presents a novel approach to adjustable autonomy, based on the notion of a transfer-of-control strategy. A transfer-of-control strategy consists of a conditional sequence of two types of actions: (i) actions to transfer decision-making control (e.g., from an agent to a user or vice versa) and (ii) actions to change an agent's pre-specified coordination constraints with team members, aimed at minimizing miscoordination costs. The goal is for high-quality individual decisions to be made with minimal disruption to the coordination of the team. We present a mathematical model of transfer-of-control strategies. The model guides and informs the operationalization of the strategies using Markov Decision Processes, which select an optimal strategy, given an uncertain environment and costs to the individuals and teams. The approach has been carefully evaluated, including via its use in a real-world, deployed multi-agent system that assists a research group in its daily activities.

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Cornell, Paul, and Doug Kokot. "Naturalistic Observation of Adjustable VDT Stand Usage." Proceedings of the Human Factors Society Annual Meeting 32, no. 8 (October 1988): 496–500. http://dx.doi.org/10.1518/107118188786762883.

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Ergonomists have long recommended user adjustable furniture for office workers. A majority of the recommendations have been based upon anthropometric models of economically “correct” postures. Research validation of these proposals is sparse, and those that have been conducted are predominantly laboratory oriented. This research observed the use of adjustable furniture in a field setting. Three questions were addressed: 1) what are the preferred settings when the equipment has been used for a length of time?; 2) do people change the settings?; and 3) how do these measures relate to anthropometric data? The offices of 91 workers were measured covertly. Twenty one offices were measured once, 41 twice, and 29 three times. All the offices had an adjustable VDT stand with independent height and angle adjustments for both the keyboard and display. Seat height had a mean and standard deviation of 20.0 and 0.85 inches. The height of the home row of the keyboard had a mean of 29.1 and a standard deviation of 1.2 inches. For the display surface the mean and standard deviation were 29.7 and 1.3 inches. In terms of repeated measures, 62.9% of the chair heights, 57.1 % of the keyboard heights, and 91.4% of the display heights did not change. Of the observed changes, 90% were between 0.25 in and 0.75 inches. None of the observed heights correlated well with stature, seated eye height, or popliteal length. One correlation was 0.32, all others were less than 0.20. The results are similar to other published data in that the measured settings are much higher than anthropometric models would predict. More significantly, they do not match the new ANSI guideline nor the proposed CSA guideline for adjustable furniture. This suggests that the ergonomic theories behind these recommendations need to be modified to more closely reflect actual use products.

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Akagi, Kenichi, and Barbara Kelly. "The Perception of Flicker in Various Ambient Light Conditions and at User Adjustable Screen Brightness Levels." Proceedings of the Human Factors Society Annual Meeting 35, no. 20 (September 1991): 1437–41. http://dx.doi.org/10.1177/154193129103502004.

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Kato, Takeo, Suguru Kimura, and Yoshiyuki Matsuoka. "Mathematical Consideration on a Robustness Index for Adjustable Control Factors." Advanced Materials Research 338 (September 2011): 26–29. http://dx.doi.org/10.4028/www.scientific.net/amr.338.26.

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Due to increased diversity of user needs and market globalization, use application and environment of the products have diversified. This causes the products are difficult to be designed. In other words, it is difficult for designers to find a unique design parameter value (a unique design solution) which assures the fluctuant products performance to be satisfied the design requirements. In such cases, the designers derive several values (range) of design parameters which can be adjusted by users or manufacturers and enable to satisfy the product performance by the adjustment. Unfortunately, the kind of design problems have not discussed sufficiently in the conventional robust design researches. This paper describes a robustness index which is applicable to such design problems and a mathematical consideration on a calculating method of the index using the Monte Carlo method.

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Hirata, Yasuhisa, Jun'ichi Higuchi, Takuro Hatsukari, and Kazuhiro Kosuge. "Parameter Setting Method for Sit-Stand Assist System Based on Human Model." Journal of Robotics and Mechatronics 21, no. 3 (June 20, 2009): 324–31. http://dx.doi.org/10.20965/jrm.2009.p0324.

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The simple sit-stand support we have designed consists of a handrail and height-adjustable electric bed for assisting the user to stand from sitting on the bed. The human-model-based evaluation indexes for sit-stand movement enabled us to set support parameters such as handrail position, bed height, and foot positioning stabilizing the user and reducing the user's muscle burden. Support system parameters take into account the user's physical dimensions and disabilities, as verified in experiments.

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Casall, John Gordon. "Technology Advancements in Hearing Protection: Active Noise Reduction, Frequency/Amplitude-Sensitivity, and Uniform Attenuation." Proceedings of the Human Factors Society Annual Meeting 36, no. 3 (October 1992): 258–62. http://dx.doi.org/10.1518/107118192786751880.

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Conventional hearing protection devices have often been implicated in compromised auditory perception, degraded signal detection, and reduced speech communication abilities. Recent technological developments have been used to augment hearing protectors in an attempt to alleviate these problems for the user, while at the same time providing adequate attenuation. Operational characteristics, design features, performance data, and applications for active noise reduction, sound transmission, frequency-selective, adjustable attenuation, amplitude-sensitive, and uniform attenuation devices are discussed.

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Cunliffe, M. W. "An Adjustable Thermoplastic Knee Brace, Directly Moulded and Colour Coordinated." British Journal of Occupational Therapy 55, no. 11 (November 1992): 430–34. http://dx.doi.org/10.1177/030802269205501110.

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The knee brace described was developed to give a low cost knee brace of sufficient rigidity, quality of fit and comfort to the patient's leg. The brace is custom moulded from thermoplastic material and incorporates a ready-made adjustable knee hinge. It has a colour coordinated covering of beige towelling and securing straps of red Velcro, the latter being attractive to the younger patient who has been the main user. Its main use to date has been application following a Leeds-Keio anterior cruciate ligament implant at the Royal Preston Hospital. The study comprised 30 patients.

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Cui, Yong, Ullrich Martin, and Jiajian Liang. "PULSim: User-Based Adaptable Simulation Tool for Railway Planning and Operations." Journal of Advanced Transportation 2018 (2018): 1–11. http://dx.doi.org/10.1155/2018/7284815.

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Simulation methods are widely used in the field of railway planning and operations. Currently, several commercial software tools are available that not only provide functionality for railway simulation but also enable further evaluation and optimisation of the network for scheduling, dispatching, and capacity research. However, the various tools are all lacking with respect to the standards they utilise as well as their published interfaces. For an end-user, the basic mechanism and the assumptions built into a simulation tool are unknown, which means that the true potential of these software tools is limited. One of the most critical issues is the lack of the ability of users to define a sophisticated workflow, integrated in several rounds of simulation with adjustable parameters and settings. This paper develops and describes a user-based, customisable platform. As the preconditions of the platform, the design aspects for modelling the components of a railway system and building the workflow of railway simulation are elaborated in detail. Based on the model and the workflow, an integrated simulation platform with open interfaces is developed. Users and researchers gain the ability to rapidly develop their own algorithms, supported by the tailored simulation process in a flexible manner. The productivity of using simulation tools for further evaluation and optimisation will be significantly improved through the user-adaptable open interfaces.

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Shi, Xiaohua, Hao Lu, and Ziming Chen. "Design and Analysis of an Intelligent Toilet Wheelchair Based on Planar 2DOF Parallel Mechanism with Coupling Branch Chains." Sensors 21, no. 8 (April 10, 2021): 2677. http://dx.doi.org/10.3390/s21082677.

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Due to the fixed size of the structure or the possibility of only simple manual adjustment, the traditional toilet wheelchair cannot easily be adapted to the size of the user or the toilet. In this paper, a planar two-degree-of-freedom parallel mechanism with coupling branch chains is proposed to enable both seat height adjustment and body posture adjustment of a toilet chair, solving the problems of posture adaptability between the user and the machine, and height matching in the process of using the wheelchair-assisted toilet. The model of the parallel mechanism was designed after analyzing the general rules of posture transformation in the human body before and after the toilet process, and the dimensions of each linkage were then determined according to the constraint conditions. By analyzing the degree of freedom, kinematics, workspace, singularity and position of the center of gravity, the rationality of the design was ensured. The weighted average function was used to find the optimal fixed point of the horizontal moving slider, and the actual trajectory at the end of the single driving mode was close to the ideal trajectory. The experimental results show that the adjustable seat height range is 290~550 mm and the adjustable angle range is 0~90°, which can enable disabled people to use the toilet independently.

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Wang, Jun, Xun Dou, Shizhen Wang, Zhen Wang, and Longzhang Zhao. "Integrated Energy Purchase-Sale Decision Making and Scheduling for Integrated Energy Service Provider Considering User Grading Dynamic Combination." E3S Web of Conferences 160 (2020): 02001. http://dx.doi.org/10.1051/e3sconf/202016002001.

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In an open energy market environment, energy retail competition is intensifying. integrated energy service provider (IEPS) with the right to operate regional integrated energy system. Under the requirement of distributed resource transaction access and scheduling security, how to integrate multi-level and multi-type user resources to participate in market operation, allocate resources within the region under its jurisdiction and improve the income of energy purchase and sale is the key for IESP to gain a favourable position in the market competition. Based on the operation framework of IESP including user grading and dynamic combination platform, integrate real-time dynamic combination of user resources into optimal scheduling, aiming at the operating economy of IEPS, an integrated energy purchase-sale decision making and scheduling method for IEPS considering user grading dynamic combination is proposed. Finally, an example is given to analysis through the regional integrated energy system with electric-gas-heat coupling. The results show that by reasonably combining users and scheduling distributed energy and adjustable load. The IESP can ensure the stable operation of the regional energy system, integrate and utilize decentralized resources to participate in the market, and maximize the economic benefits of energy purchase and sale.

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Peeters, Roel, Dave Singelée, and Bart Preneel. "Threshold-Based Location-Aware Access Control." International Journal of Handheld Computing Research 2, no. 3 (July 2011): 22–37. http://dx.doi.org/10.4018/jhcr.2011070102.

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Designing a secure, resilient and user-friendly access control system is a challenging task. In this article, a threshold-based location-aware access control mechanism is proposed. This design uniquely combines the concepts of secret sharing and distance bounding protocols to tackle various security vulnerabilities. The proposed solution makes use of the fact that the user carries around various personal devices. This solution offers protection against any set of or fewer compromised user’s devices, with being an adjustable threshold number. It removes the single point of failure in the system, as access is granted when one carries any set of user’s devices. Additionally it supports user-centered management, since users can alter the set of personal devices and can adjust the security parameters of the access control scheme towards their required level of security and reliability.

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Krestanova, Alice, Martin Cerny, and Martin Augustynek. "Review: Development and Technical Design of Tangible User Interfaces in Wide-Field Areas of Application." Sensors 21, no. 13 (June 22, 2021): 4258. http://dx.doi.org/10.3390/s21134258.

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A tangible user interface or TUI connects physical objects and digital interfaces. It is more interactive and interesting for users than a classic graphic user interface. This article presents a descriptive overview of TUI’s real-world applications sorted into ten main application areas—teaching of traditional subjects, medicine and psychology, programming, database development, music and arts, modeling of 3D objects, modeling in architecture, literature and storytelling, adjustable TUI solutions, and commercial TUI smart toys. The paper focuses on TUI’s technical solutions and a description of technical constructions that influences the applicability of TUIs in the real world. Based on the review, the technical concept was divided into two main approaches: the sensory technical concept and technology based on a computer vision algorithm. The sensory technical concept is processed to use wireless technology, sensors, and feedback possibilities in TUI applications. The image processing approach is processed to a marker and markerless approach for object recognition, the use of cameras, and the use of computer vision platforms for TUI applications.

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Geetha, Dr V., Dr C. K. Gomathy*, Mr Maddu Pavan Manikanta Kiran, and Mr Gandikota Rajesh. "A Secure Based Preserving Social Media Data Management System." International Journal of Engineering and Advanced Technology 10, no. 4 (April 30, 2021): 210–14. http://dx.doi.org/10.35940/ijeat.d2455.0410421.

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Personalized suggestions are important to help users find relevant information. It often depends on huge collection of user data, especially users’ online activity (e.g., liking/commenting/sharing) on social media, thereto user interests. Publishing such user activity makes inference attacks easy on the users, as private data (e.g., contact details) are often easily gathered from the users’ activity data. during this module, we proposed PrivacyRank, an adjustable and always protecting privacy on social media data publishing framework , which protects users against frequent attacks while giving personal ranking based recommendations. Its main idea is to continuously blur user activity data like user-specified private data is minimized under a given data budget, which matches round the ranking loss suffer from the knowledge blurring process so on preserve the usage of the info for enabling suggestions. a true world evaluation on both synthetic and real-world datasets displays that our model can provide effective and continuous protection against to the info given by the user, while still conserving the usage of the blurred data for private ranking based suggestion. Compared to other approaches, Privacy Rank achieves both better privacy protection and a far better usage altogether the rank based suggestions use cases we tested.

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Summerfelt, Steven T., Kyle H. Holland, Joseph A. Hankins, and Martin D. Durant. "A hydroacoustic waste feed controller for tank systems." Water Science and Technology 31, no. 10 (May 1, 1995): 123–29. http://dx.doi.org/10.2166/wst.1995.0368.

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The objective of this work was to develop a commercially viable method to reduce waste feed and thus improve production efficiency and reduce discharge of solids and nutrients within tank based aquaculture systems. We developed and custom fabricated a feeding controller which uses ultrasound to detect uneaten feed and controls feeding events based upon appetite satiation as measured by the quantity of waste feed detected. During feeding, the developed device functions as a combination ultrasonic detector, feedback controller, and interval timer. The device functions as a feedback controller by ultrasonically sampling the stock tank effluent and turning off the feeder when an excessive amount of feed enters the effluent flow. After feeding has been inactivated, the ultrasonic waste feed controller operates as an interval timer and provides a user selected delay between feedings. A custom hydroacoustic probe assembly was developed to detect uneaten feed. The controller can be calibrated by adjusting the transducer signal gain to detect signals resulting from feed pellets, while reducing signals resulting from faeces. The controller has an adjustable set-point for deactivating the feeder circuit based upon the number of feed pellets detected by the transducer and a programmable delay time interval (from 5 to 160 min) to set the time between feedings. The controller also has an adjustable sampling rate for detection at different pipe velocities and an adjustable observation volume for use in standard 2, 3, 4 and 6 inch diameter effluent pipes. The cost in materials and labour to produce this waste feed controller was estimated at around $100 (U.S.).

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Neumann, Alexander, Benjamin Strenge, Lars Schalkwijk, Kai Essig, and Thomas Schack. "Facilitating Workers’ Task Proficiency with Subtle Decay of Contextual AR-Based Assistance Derived from Unconscious Memory Structures." Information 12, no. 1 (January 4, 2021): 17. http://dx.doi.org/10.3390/info12010017.

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Contemporary assistance systems support a broad variety of tasks. When they provide information or instruction, the way they do it has an implicit and often not directly graspable impact on the user. System design often forces static roles onto the user, which can have negative side effects when system errors occur or unique and previously unknown situations need to be tackled. We propose an adjustable augmented reality-based assistance infrastructure that adapts to the user’s individual cognitive task proficiency and dynamically reduces its active intervention in a subtle, not consciously noticeable way over time to spare attentional resources and facilitate independent task execution. We also introduce multi-modal mechanisms to provide context-sensitive assistance and argue why system architectures that provide explainability of concealed automated processes can improve user trust and acceptance.

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Xu, Hong Sheng, and Qing Tan. "Building Electronic Commerce Recommendation System Based on Ontology Learning and BP Neural Network." Advanced Materials Research 718-720 (July 2013): 1961–66. http://dx.doi.org/10.4028/www.scientific.net/amr.718-720.1961.

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Electronic commerce recommendation system can effectively retain user, prevent users from erosion, and improve e-commerce system sales. BP neural network using iterative operation, solving the weights of the neural network and close values to corresponding network process of learning and memory, to join the hidden layer nodes of the optimization problem of adjustable parameters increase. Ontology learning is the use of machine learning and statistical techniques, with automatic or semi-automatic way, from the existing data resources and obtaining desired body. The paper presents building electronic commerce recommendation system based on ontology learning and BP neural network. Experimental results show that the proposed algorithm has high efficiency.

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Nadia, Nadia, Agnes Kurniati, Francisco Maruli Panggabean, and Thomas Galih Satria. "Gamification for Increasing Learning Motivation of College Student." Engineering, MAthematics and Computer Science (EMACS) Journal 3, no. 1 (February 1, 2021): 27–30. http://dx.doi.org/10.21512/emacsjournal.v3i1.6843.

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The purpose of this research is to build an attractive gamification system that could motivate college students as the user target by customized challenges with adjustable difficulty-scaled reward systems. The methods used for the research consists of problem identification, collecting and analyzing the data, problem formulation, solution and design creation, product implementation, and evaluation. StudyGO is a mobile application that has 2 main features that have gamification aspects which are focused and scheduled study. The application evaluation is done with questionnaire evaluation based on 5 measurable human factors. The majority results from the application feels very motivated and rewarded enough from this gamification system.

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Marino, A. T., J. J. Distefano, and E. M. Landaw. "DIMSUM: an expert system for multiexponential model discrimination." American Journal of Physiology-Endocrinology and Metabolism 262, no. 4 (April 1, 1992): E546—E556. http://dx.doi.org/10.1152/ajpendo.1992.262.4.e546.

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DIMSUM is a highly automated, rule-based expert system designed to fit multiexponential models of increasing dimension to time series data, followed by selection of the best candidate model based on a user-modifiable and weighted decision tree of statistical criteria for model discrimination. The major features of DIMSUM are 1) an interactive and friendly user interface; 2) options for incorporating prior information about the parameters, the data, and/or the system from which the data were collected, in the form of equality and inequality constraints; 3) a built-in algorithm for automatically obtaining starting values for parameter estimation; 4) a robust weighted least-squares parameter estimation algorithm operating in an adaptive, user-adjustable search space; 5) comprehensive statistical results comparing different order candidate models fitted to the data; and 6) a novel, user-modifiable (learning) rule-based advisory subsystem providing an “expert's” interpretation of these statistical results and an explanation of all advice.

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Sierra-Aguilar, Juan Esteban, Cristian Camilo Marín-Cano, Jesús M. López-Lezama, Álvaro Jaramillo-Duque, and Juan G. Villegas. "A New Affinely Adjustable Robust Model for Security Constrained Unit Commitment under Uncertainty." Applied Sciences 11, no. 9 (April 28, 2021): 3987. http://dx.doi.org/10.3390/app11093987.

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Currently, optimization models for the safe and reliable operation of power systems deal with two major challenges: the first one is the reduction of the computational load when considering N−1 contingencies; the second one is the adequate modeling of the uncertainty of intermittent generation and demand. This paper proposes a new affinely adjustable robust model to solve the security constrained unit commitment problem considering these sources of uncertainty. Linear decision rules, which take into account the forecasts and forecast errors of the different sources of uncertainty, are used for the affine formulation of the dispatch variables, thus allowing the tractability of the model. Another major novelty is that the evaluation of the N−1 security constraints is performed by incorporating a novel method, proposed in the literature, based on the user-cuts concept. This method efficiently and dynamically adds only the binding N−1 security constraints, increasing the computational efficiency of the model when transmission line contingencies are considered. Finally, Monte Carlo simulations on the post-optimization results were run to demonstrate the effectiveness, feasibility and robustness of the solutions provided by the proposed model.

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Gillham, Michael, Matthew Pepper, Steve Kelly, and Gareth Howells. "Feature determination from powered wheelchair user joystick input characteristics for adapting driving assistance." Wellcome Open Research 2 (September 27, 2017): 93. http://dx.doi.org/10.12688/wellcomeopenres.12280.1.

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Background: Many powered wheelchair users find their medical condition and their ability to drive the wheelchair will change over time. In order to maintain their independent mobility, the powered chair will require adjustment over time to suit the user's needs, thus regular input from healthcare professionals is required. These limited resources can result in the user having to wait weeks for appointments, resulting in the user losing independent mobility, consequently affecting their quality of life and that of their family and carers. In order to provide an adaptive assistive driving system, a range of features need to be identified which are suitable for initial system setup and can automatically provide data for re-calibration over the long term. Methods: A questionnaire was designed to collect information from powered wheelchair users with regard to their symptoms and how they changed over time. Another group of volunteer participants were asked to drive a test platform and complete a course which represented manoeuvring in a very confined space as quickly as possible. Two of those participants were also monitored over a longer period in their normal home daily environment. Features, thought to be suitable, were examined using pattern recognition classifiers to determine their suitability for identifying the changing user input over time. Results: The results are not designed to provide absolute insight into the individual user behaviour, as no ground truth of their ability has been determined, they do nevertheless demonstrate the utility of the measured features to provide evidence of the users’ changing ability over time whilst driving a powered wheelchair. Conclusions: Determining the driving features and adjustable elements provides the initial step towards developing an adaptable assistive technology for the user when the ground truths of the individual and their machine have been learned by a smart pattern recognition system.

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Gillham, Michael, Matthew Pepper, Steve Kelly, and Gareth Howells. "Feature determination from powered wheelchair user joystick input characteristics for adapting driving assistance." Wellcome Open Research 2 (December 6, 2017): 93. http://dx.doi.org/10.12688/wellcomeopenres.12280.2.

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Background: Many powered wheelchair users find their medical condition and their ability to drive the wheelchair will change over time. In order to maintain their independent mobility, the powered chair will require adjustment over time to suit the user's needs, thus regular input from healthcare professionals is required. These limited resources can result in the user having to wait weeks for appointments, resulting in the user losing independent mobility, consequently affecting their quality of life and that of their family and carers. In order to provide an adaptive assistive driving system, a range of features need to be identified which are suitable for initial system setup and can automatically provide data for re-calibration over the long term. Methods: A questionnaire was designed to collect information from powered wheelchair users with regard to their symptoms and how they changed over time. Another group of volunteer participants were asked to drive a test platform and complete a course which represented manoeuvring in a very confined space as quickly as possible. Two of those participants were also monitored over a longer period in their normal home daily environment. Features, thought to be suitable, were examined using pattern recognition classifiers to determine their suitability for identifying the changing user input over time. Results: The results are not designed to provide absolute insight into the individual user behaviour, as no ground truth of their ability has been determined, they do nevertheless demonstrate the utility of the measured features to provide evidence of the users’ changing ability over time whilst driving a powered wheelchair. Conclusions: Determining the driving features and adjustable elements provides the initial step towards developing an adaptable assistive technology for the user when the ground truths of the individual and their machine have been learned by a smart pattern recognition system.

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Gillham, Michael, Matthew Pepper, Steve Kelly, and Gareth Howells. "Feature determination from powered wheelchair user joystick input characteristics for adapting driving assistance." Wellcome Open Research 2 (May 10, 2018): 93. http://dx.doi.org/10.12688/wellcomeopenres.12280.3.

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Background: Many powered wheelchair users find their medical condition and their ability to drive the wheelchair will change over time. In order to maintain their independent mobility, the powered chair will require adjustment over time to suit the user's needs, thus regular input from healthcare professionals is required. These limited resources can result in the user having to wait weeks for appointments, resulting in the user losing independent mobility, consequently affecting their quality of life and that of their family and carers. In order to provide an adaptive assistive driving system, a range of features need to be identified which are suitable for initial system setup and can automatically provide data for re-calibration over the long term. Methods: A questionnaire was designed to collect information from powered wheelchair users with regard to their symptoms and how they changed over time. Another group of volunteer participants were asked to drive a test platform and complete a course which represented manoeuvring in a very confined space as quickly as possible. Two of those participants were also monitored over a longer period in their normal home daily environment. Features, thought to be suitable, were examined using pattern recognition classifiers to determine their suitability for identifying the changing user input over time. Results: The results are not designed to provide absolute insight into the individual user behaviour, as no ground truth of their ability has been determined, they do nevertheless demonstrate the utility of the measured features to provide evidence of the users’ changing ability over time whilst driving a powered wheelchair. Conclusions: Determining the driving features and adjustable elements provides the initial step towards developing an adaptable assistive technology for the user when the ground truths of the individual and their machine have been learned by a smart pattern recognition system.

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Journal articles on the topic 'User adjustable'

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