Assistive Technology Research Articles

Desktop Voice Assistant

Abstract: Desktop voice assistants have become a popular interface for human-computer interaction because they allow users to speak with their computers in natural language. However, modern desktop voice assistants sometimes struggle to understand and respond to complex queries and context. Privacy concerns concerning the collection and use of user data also remain significant barriers. In order to enhance desktop voice assistants, we present a novel personalization and multimodal interaction technique in this research. By combining text, voice, and visual inputs, our approach improves the accuracy and relevance of the responses. By combining several modalities, our system is able to better understand context and user intent, leading to more meaningful interactions. Furthermore, we propose a user-centric personalization strategy whereby the voice assistant progressively learns each user's preferences and usage patterns. Because it depends less on centralized data collection and processing, this customized approach improves user experience while simultaneously addressing privacy concerns. Through a series of experiments and user surveys, we show how effective our approach is in improving the overall performance and user experience of desktop voice assistants. Our results show that the combination of multimodal interaction with personalization produces more accurate and contextually relevant responses, improving the user experience. All things considered, our research advances desktop voice assistant technology by addressing significant interface and personalization issues. Our approach has the potential to significantly improve desktop voice assistant usability and user acceptance, which could result in considerably more intuitive and natural human-computer interaction.

Accessibility of digital systems in information retrieval by users with visual impairment

Purpose This paper aims to evaluate the accessibility of digital information systems as a key usability attribute in information retrieval by users with visual impairment (VI), to inform development of accessible information systems. Design/methodology/approach This study used a cross-sectional survey design based on the quantitative research paradigm. Data was collected from 117 students with visual impairments from selected public universities in Kenya, using a semi-structured questionnaire adapted from Web Content Accessibility Guidelines. Findings This study revealed that gender did not influence screen reader compatibility, alternative format preferences, perceptions of accessible content or digital library navigability. Instead, type of visual impairment, prior assistive technology (AT) training and digital library use frequency significantly impacted these attributes. Blind students reported positive experiences, favouring alternative formats, and expressed positive views on accessible content while those with low vision faced more challenges. Prior training in assistive technology and frequent digital library use resulted in higher screen reader compatibility and better navigability. Increased digital library use was linked to access to alternative content for those with prior assistive technology training. Research limitations/implications This study contributes to the existing literature on accessibility of digital information systems for users with visual impairments. Further research is needed to explore other factors that may influence the accessibility of digital systems, such as the design of user interfaces as well as an evaluation of accessibility of digital systems for other categories of disabilities such as hearing impairment, physical impairment, autism and intellectual disability, among others. Practical implications The findings of this study have practical implications for the design and development of digital systems such as digital libraries. Developers can leverage findings of this study to enhance compatibility of digital platforms with screen readers and provide alternative formats and accessible content. User-centred design principles can be used to create interfaces that are easy to navigate and friendly to users with visual impairments. Training programmes on assistive technology should be provided to users to enhance their skills and confidence in using digital systems. Originality/value This study contributes towards design and creation of navigable systems that are compatible with screen readers. The study also points out the importance of creating more inclusive and usable digital environments for persons with visual impairments.

Ethical Considerations in AI Simulations for Designing Assistive Technologies

Current ethical debates on the use of artificial intelligence (AI) in healthcare approach AI technology in three primary ways. First, they assess the risks and potential benefits of current AI-enabled products using ethical checklists. Second, they propose ex ante lists of ethical values relevant to the design and development of assistive technologies. Third, they advocate for incorporating moral reasoning into AI's automation processes. These three perspectives dominate the discourse, as evidenced by a brief literature summary. We propose a fourth approach: viewing AI as a methodological tool to aid ethical reflection. This involves an AI simulation concept informed by three elements: 1) stochastic human behavior models based on behavioral data for simulating realistic scenarios, 2) qualitative empirical data on value statements regarding internal policy, and 3) visualization components to illustrate the impact of variable changes. This approach aims to inform an interdisciplinary field about anticipated ethical challenges or trade-offs in specific settings, prompting a re-evaluation of design and implementation plans. This is particularly useful for applications involving complex values and behaviors or limited communication resources, such as dementia care or care for individuals with cognitive impairments. While simulation does not replace ethical reflection, it allows for detailed, context-sensitive analysis during the design process and before implementation.Finally, we discuss the quantitative analysis methods enabled by stochastic simulations and the potential for these simulations to enhance traditional thought experiments and future-oriented technology assessments.

Ex ovo omnia - Why don't we know more about egg quality via imaging?

Determining egg quality is the foremost challenge in assisted reproductive technology (ART). Although extensive advances have been made in multiple areas of ART over the last forty years, oocyte quality assessment tools have not much evolved beyond standard morphological observation. The oocyte not only delivers half of the nuclear genetic material and all of the mitochondrial DNA to an embryo but also provides complete developmental support during embryonic growth. Oocyte mitochondrial numbers far exceed those of any somatic cell, yet little work has been done to evaluate the mitochondrial bioenergetics of an oocyte. Current standard oocyte assessment in in vitro fertilization (IVF) centers include the observation of oocytes and their surrounding cell complex (cumulus cells) via stereomicroscope or inverted microscope, which is largely primitive. Additional oocyte assessments include polar body grading and polarized light meiotic spindle imaging. However, the evidence regarding the aforementioned methods of oocyte quality assessment and IVF outcomes is contradictory and non-reproducible. High resolution microscopy techniques have also been implemented in animal and human models with promising outcomes. The current era of oocyte imaging continues to evolve with discoveries in artificial intelligence models of oocyte morphology selection albeit at a slow rate. In this review, past, current, and future oocyte imaging techniques will be examined with the goal of drawing attention to the gap which limits our ability to assess oocytes in real time. The implications of improved oocyte imaging techniques on patients undergoing IVF will be discussed as well as the need to develop point of care oocyte assessment testing in IVF labs.

Nurturing Hope: Reproductive Outcomes with Sinosomatics Following Unsuccessful IVF Attempts.

For women who have experienced failed attempts at in vitro fertilization (IVF) and face medical issues leading to infertility, the renewed effort to seek fertility treatment, coupled with decreasing likelihood of success, can exert substantial emotional and physical strains. Consequently, many couples opt to discontinue treatment before attaining pregnancy. The objective of this study was to evaluate the reproductive outcomes in patients with unsuccessful prior IVF attempts who received a complementary treatment designed to alleviate emotional distress and burden. A retrospective analysis of data from infertile patients who initiated the complementary intervention at a private clinic between January 2014 and December 2016 was conducted. Information on diagnosis, history of infertility, prior assisted reproductive technologies treatments, mode of conception, and pregnancy outcomes were retrieved. The data of 133 patients with a history of one or more unsuccessful IVF treatments were analyzed. Patients had an average age of 36.7 years (± 4.4 SD) and had been experiencing infertility for an average of 4.6 years (± 2.7 SD). The two main causes of their infertility were endometriosis (36.1%, 48 patients) and diminished egg quality (31.6%, 42 patients). By May 2020, a significant proportion of the patients, 81.2% (108 patients), had achieved pregnancy, leading to 94 live births, which represents a 70.7% success rate. These pregnancies mostly resulted from natural-cycle IVF (35.1%), donor cycles (23.4%), and conventional IVF (21.3%). The dropout rate was comparatively low at 23.3%. The median time from the start of complementary treatment to delivery was 18 months, with a range of 12 to 28 months. This study highlights the potential value of complementary treatment approaches in conjunction with standard medical care for women who have experienced unsuccessful IVF treatments in the past and thus face a reduced chance of motherhood. The reported 71% live birth rate is notably high, indicating that the inclusion of complementary treatments may provide women with past IVF failures a tangible opportunity for achieving successful pregnancy and childbirth. However, these findings need to be confirmed through randomized controlled studies.

Exploring Muslim Communities' Experiences and Barriers While Accessing Assisted Reproductive Technologies: A Scoping Review of International Literature.

This study adopted a scoping review methodology to analyze international literature on the barriers impacting Muslim couples' access to equitable assisted reproductive technologies (ART). A total of 27 studies were included for review. Results show that Muslim communities face several barriers when accessing ART. These include cultural and religious barriers that impacted which aspects of ART couples were open to adopting, diminished quality of care due to low cultural/religious capacity of practitioners, as well as gendered norms which intersect with experiences of ART treatments. Further research, based in western countries, should be conducted to better understand how these contexts can support Muslim patients accessing ART.

Innovation in Transparent Technology with a Deep Dive into Iot-Connected Smart Glass

The goal of the project "Innovation In Transparent Technology With A Deep Dive Into IoT-Connected Smart Glass" using YOLO Image Processing is to create a cutting-edge assistive technology solution that will increase the mobility and freedom of people who are blind or visually impaired. The goal of this project is to incorporate wearable smart glasses with real-time object recognition utilizing the YOLO (You Only Look Once) algorithm. The Arduino Nano microprocessor, buzzer, and sensors that are built into the smart glasses will allow for the real-time recognition of common objects and obstacles within the user's surroundings. The system will use an easy-to-use, accessible user interface to communicate detected objects and navigation hints to the user through buzzer and vibration.

Cryopreservation of spermatozoa from black-and-gold howler monkeys (Alouatta caraya) using egg yolk-based or soy lecithin-based extenders.

There are more than 200 species and subspecies of Neotropical Primates of which more than 40% are listed as threatened by the IUCN Red List of Threatened Species. Both in situ and ex situ conservation programs can benefit from the use of assisted reproductive technologies. The objective of this study was to evaluate, for the first time, cryopreservation techniques for Alouatta caraya semen. Semen samples were collected from five adult males, analyzed, and frozen in either Test-egg yolk or Test-soy lecithin-based extenders containing either 3 or 4% glycerol. Frozen-thawed samples were analyzed at 10, 40, and 80min post-thaw. Egg yolk-based extenders were overall better than soy lecithin-based extenders. There was no significant difference between 3 and 4% glycerol in any of the parameters analyzed, however, 4% glycerol in egg yolk-based extender produced more favorable results for total motility, intact plasma membrane, lipidperoxidation, and DNA fragmentation index. This study brought novel information on semen characteristics and cryopreservation aspects for A. caraya, which can help shape future experiments to improve the outcome of frozen-thawed sperm for this and other species of Neotropical primates.

Smart homes: pioneering age-friendly environments in China for enhanced health and quality of life

Traditionally, China has been more reliant on a model of care that ensures older adults are cared for by family members. Whilst promoting the idea of older adults ageing in their own homes is essential, the provision of in-home care must shift from primarily relying on family caregivers to a model that places greater emphasis on gerontechnologies and enhanced healthcare service delivery. In this perspective article we argue for the adoption of a ‘smart home’ model in aged care in China. The smart home model argues for innovative technologies to older adult care, such as virtual support groups, video-conferencing, and electronic health records; assistive technologies that can safely maintain independence and assist with daily living such as sensors, wearables, telehealth, smart home technologies as well as interactive robotic technologies for mobility and cognitive support such as humanoid robots, rehabilitation robots, service/companion robots. The adoption and implementation of gerontechnologies have been slow, with only a handful of solutions demonstrating proven effectiveness in supporting home care. The utilisation of such digital technologies to support and enable older adults in China to age-in-place can bring a significant contribution to healthy ageing. Nonetheless, it’s crucial to focus on co-creating with end-users, incorporating their values and preferences, and enhancing training to boost the adoption of these gerontechnologies. Through a smart home model of care, China can age-in-place more effectively, leading to significant contributions to healthy ageing.

Психологическая помощь детям, пострадавшим в результате боевых действий

<p style="text-align: justify;">This article presents a comprehensive program of psychological and pedagogical support and rehabilitation of children who witnessed or suffered during hostilities developed by specialists of the Federal Coordination Center for Psychological Services in the Education System of the Russian Federation of the Moscow State University of Psychology & Education. The program is based on the results of a theoretical and methodological analysis of foreign and domestic experience in psychological assistance to minors who have experienced traumatic experiences, and an empirical study of the characteristics of the psychological state of children and adolescents living in territories involved in the consequences of hostilities. The program includes a description and results of the screening procedure, developed algorithms for interdepartmental interaction, technologies for psychological, pedagogical, medical and social assistance to children and families based on educational organizations. The testing of this program was carried out in 2023 in schools of the Donetsk People’s Republic, Kherson, Rostov and Belgorod regions.</p>

Technological frontier in Uruguay's beef cattle production: An analysis of technical efficiency and its main drivers

AbstractGlobally, livestock grazing is a major land occupier and is often criticized for its environmental impact. To address these concerns, enhancing livestock productivity is crucial to mitigate these impacts, boost farm competitiveness, and increase food production. The understanding of production variability is key to this endeavor. This paper assesses the technical efficiency of cow‐calf beef production units in Uruguay, excluding dairy and feedlot operations. Using data from the 2016 National Livestock Survey and Wang's frontier model, we estimate a translog stochastic production frontier, incorporating bovine livestock units, land area, and equivalent working units as key inputs. This model also controls soil productivity, improved grazing areas, productive orientation (beef‐cattle systems or beef cattle‐ovine mixed systems), beef production system (cow‐calf, full cycle, and fattening operation), access to electric power, and agroecological regions. Furthermore, it explores factors affecting technical inefficiency, such as ownership (individual, corporate without contract, and corporate with contract) and land tenure types (owner, tenant, or other types), besides the presence of third‐party owned cattle, technical assistance (including veterinarian and agronomic), and specific beef cattle technologies (such as continuous bull presence, artificial insemination, ovarian activity diagnosis, pregnancy diagnosis, use of scales for classifying females, temporary and early weaning, and cows and heifers grazing together). Findings indicate an average technical efficiency of 71.3%. Notably, factors such as agronomic and veterinary assistance, artificial insemination, weaning practices, third‐party‐owned cattle presence, pregnancy diagnosis, land tenure, and ownership type significantly impact technical efficiency. Our findings suggest that within the specific segment of cow‐calf operations in Uruguay, there is a potential to enhance beef production by 40.2% through improvements in farm management. [EconLit Citations: Q12, D24].

Vitrification of human blastocysts for couples undergoing assisted reproduction: an updated review

Over the past 40 years there has been a worldwide critical change in the field of assisted reproduction technology (ART), leading to the increased application of single blastocyst transfer, which is extremely important to avoid the risks of multiple pregnancy and associated complications for both mother and babies. Indeed, advancements in ART over the last few decades have been obtained thanks to several improvements, including ovarian stimulation, embryo culture conditions and, of course, progress in cryopreservation methods, especially with the application of vitrification. The ability to cryopreserve human embryos has improved significantly with vitrification compared to the initially adopted slow-freezing procedures. Since the introduction of vitrification, it has become the gold standard method to effectively cryopreserve human blastocysts. However, some new protocols are now being explored, such as the short warming procedure and even shorter exposure to the equilibration solution before vitrification, which seem to provide optimal results. Therefore, the main aim of the current narrative review, will be to illustrate the benefit of vitrification as an effective method to cryopreserve the human blastocyst and to illustrate new protocols and variations which in future may increase the performance of vitrification protocols.

Smart Glasses for Visually Impaired People Using IoT

The visually handicapped have a difficult time getting by in a world that is mostly intended for sighted people. Even seemingly simple things like locating obstacles, traversing new places, and keeping spatial awareness can be difficult for them and frequently impede their freedom and movement. Their sense of dependence and loneliness are exacerbated by the absence of real-time support and systems catered to their individual needs, which exacerbates these challenges. Smart glasses are made especially for those who are blind or visually impaired to address these issues. These smart glasses use technologies to improve the wearer's movement and independence while offering real-time help. It seeks to remove the obstacles that visually impaired people encounter when attempting to safely and successfully navigate their environment by utilizing modern sensor technology and creative IoT solutions. [3] Its primary goal is to create a wearable assistive technology with features including proximity alarms, object detection, distance measuring, and location mapping. It seeks to provide a complete and user-friendly system that caters to the unique needs of visually impaired people by integrating a variety of sensors, communication modules, and cloud-based platforms. The goal of the glasses is to let people to live more independently and confidently by removing the limits imposed by visual impairment, which will ultimately improve their overall quality of life.

Occupational therapy and chronic pain - the didactic experience at academic pain league at the University of São Paulo medical school

Occupational Therapy interventions for people with chronic pain focus on promoting independence/autonomy and rescuing meaningful activities (interrupted after the limitations brought about by illness). Various strategies can be used, such as: guidance on energy conservation and joint protection techniques, prescription and/or manufacture of positioning devices, prescription and/or manufacture of assistive technology equipment, development of creative and expressive activities, training activities of daily living, environmental assessment, guidance for family members and caregivers. This article aims to present the implementation of the Occupational Therapy Service at the FMUSP Pain League, developed since 2023. The work focused on implementing Occupational Therapy as one of the professions that make up the FMUSP Pain League, on a permanent and continuous basis; and, in addition, allow undergraduates teaching opportunities (theoretical and practical) related to the multidisciplinary care of people with chronic pain, as well as promoting research actions in the area of ​​Occupational Therapy and Chronic Pain. In OT, a student and the supervising teacher work, together with the multidisciplinary team. Activities are weekly and take place at night. Remote and in-service supervision is carried out. The implementation took place in 3 stages. In the first stage, we sought to understand the dynamics of the league, as well as characterize the patients and their specific demands, through participant observation. The second stage was structured around the specific OT intervention; evaluations of league users were carried out, with the application of evaluation and recording instruments. The third stage focused on monitoring patients and families, with new assessments carried out when necessary. Interventions follows through individual plan care, family guidance, development of educational material, prescription and/or production of assistive technology devices. The service uses a specific evolution form and the data feeds into a service database. We consider that the results obtained are satisfactory, as theoretical and practical learning was possible for the participating student. Currently, Occupational Therapy is already part of the League's routine activities, with participation in the Introductory Course, in the Board of Directors and in planning activities for 2024.

Concerns regarding the accessibility of self-service interactive devices for people with disabilities.

Self-service interactive devices allow users to access information or services without directly interacting with service personnel. As the prevalence of disability increases, it is important to consider the barriers individuals face in using these devices and explore opportunities to increase accessibility through assistive and adaptive technologies. This study aimed to establish recommendations to enhance the accessibility of self-service interactive devices, with the objective of understanding users' experiences with these devices. Nineteen semi-structured interviews were held with stakeholders focusing on accessible design for people with disabilities, categorized as (a) persons with lived experiences with disability, (b) disability advocates, or (c) assistive technology industry experts. The study used content analysis to identify recurring concepts and opportunities to improve accessibility. Participants discussed the potential benefits of updating or incorporating additional accessibility technologies into self-service devices and proposed solutions to existing deficiencies. Common concerns expressed among participants included the privacy and security of self-service devices, protection of personal information, and the consistency and usability of devices. Participants also suggested how this inconsistency could be mitigated and how to improve existing accessibility functionalities. Accessible functionalities in self-service devices have the potential to help address the unmet needs of Canadians with disabilities. With the breadth of available accessible and adaptive technologies, the study concludes that it is imperative to understand (1) what technologies are useful to people with disabilities, (2) whether the inclusion of these technologies is feasible in self-service devices, and (3) how user experience can be improved.

Hyperparameter tuning using Lévy flight and interactive crossover-based reptile search algorithm for eye movement event classification

Introduction: Eye movement is one of the cues used in human–machine interface technologies for predicting the intention of users. The developing application in eye movement event detection is the creation of assistive technologies for paralyzed patients. However, developing an effective classifier is one of the main issues in eye movement event detection.Methods: In this paper, bidirectional long short-term memory (BILSTM) is proposed along with hyperparameter tuning for achieving effective eye movement event classification. The Lévy flight and interactive crossover-based reptile search algorithm (LICRSA) is used for optimizing the hyperparameters of BILSTM. The issues related to overfitting are avoided by using fuzzy data augmentation (FDA), and a deep neural network, namely, VGG-19, is used for extracting features from eye movements. Therefore, the optimization of hyperparameters using LICRSA enhances the classification of eye movement events using BILSTM.Results and Discussion: The proposed BILSTM–LICRSA is evaluated by using accuracy, precision, sensitivity, F1-score, area under the receiver operating characteristic (AUROC) curve measure, and area under the precision–recall curve (AUPRC) measure for four datasets, namely, Lund2013, collected dataset, GazeBaseR, and UTMultiView. The gazeNet, human manual classification (HMC), and multi-source information-embedded approach (MSIEA) are used for comparison with the BILSTM–LICRSA. The F1-score of BILSTM–LICRSA for the GazeBaseR dataset is 98.99%, which is higher than that of the MSIEA.

On the issue of repeated implantation failures with assisted reproductive technologies

Embryo implantation is the first key step of a successful pregnancy, but implantation failures in patients undergoing assisted reproductive technology (ART) programs remains quite common. The main known factors of repeated implantation failures (RIF) in patients undergoing ART are unhealthy lifestyle, genetic factor, uterus pathology, endometriosis and adenomyosis, thrombophilia, and also male factor and embryonic factors. RIF factors and ways to overcome them receive much attention from researchers. However, although many possible RIF causes have been identified, much remains unknown regarding the etiology and management of this condition. In clinical practice, studies and interventions are often used without clear scientific rationale or convincing evidence of their effectiveness due to the lack of standardization of diagnostic and treatment methods. An effective strategy for treating RIF risk factors is necessary to increase the chances of successful pregnancy in assisted reproductive technology programs.

Ceria Nanoparticle Systems Alleviate Degenerative Changes in Mouse Postovulatory Aging Oocytes by Reducing Oxidative Stress and Improving Mitochondrial Functions.

Postovulatory aging oocytes usually feature diminished potential for fertilization and poor embryonic development due to enhanced oxidative damage to the subcellular organelles and macromolecules, which stands as a formidable obstacle in assisted reproductive technologies (ART). Here, we developed lipoic acid (LA) and polyethylene glycol (PEG)-modified CeO2 nanoparticles (LA-PEG-CeNPs) with biocompatibility, enzyme-like autocatalytic activity, and free radical scavenging capacity. We further investigated the LA-PEG-CeNPs effect in mouse postovulatory oocytes during in vitro aging. The results showed that LA-PEG-CeNPs dramatically reduced the accumulation of ROS in aging oocytes, improving mitochondrial dysfunction; they also down-regulated the pro-apoptotic activity by rectifying cellular caspase-3, cleaved caspase-3, and Bcl-2 levels. Consistently, this nanoenzyme prominently alleviated the proportion of abnormalities in spindle structure, chromosome alignment, microtubule stability, and filamentous actin (F-actin) distribution in aging oocytes, furthermore decreased oocyte fragmentation, and improved its ability of fertilization and development to blastocyst. Taken together, our finding suggests that LA-PEG-CeNPs can alleviate oxidative stress damage on oocyte quality during postovulatory aging, implying their potential value for clinical practice in assisted reproduction.

Regulatory safeguards needed if preimplantation genetic testing for polygenic risk scores (PGT-P) is permitted in Singapore

Singapore, a highly affluent island city-state located in Southeast Asia, has increasingly leveraged new assisted reproductive technologies (ART) to overcome its dismal fertility rates in recent years. A new frontier...

BLINDS EYE: Advancing Navigation for the Visually Impaired with Arduino Uno

Blinds Eye Advancing Navigation for the Visually Impaired with Arduino Uno. Navigating their surroundings independently, visually impaired individuals encounter challenges with traditional aids. This advanced blind navigation system, integrating an Arduino Uno for processing, a GPS module for real-time tracking, and a panic button for emergencies, presents a groundbreaking solution. Ultrasonic and IR sensors detect obstacles, issuing audio alerts and adjusting routes. An RF module aids in locating a misplaced smart stick. Overcoming limitations of existing solutions, the system's audio output provides crucial information, ensuring safer and more efficient independent travel for the visually impaired." Key Words: Arduino Uno, Blind navigation, Visually impaired, GPS module, Ultrasonic sensors, Infrared sensors, RF module, Assistive technology