A study of acoustic characteristics of voluntary expiratory sounds produced before and immediately after swallowing

To evaluate the expiratory sounds produced during swallowing recorded simultaneously with videofluorographic examination of swallowing (VF) using fast Fourier transform (FFT), and to examine the relationship between dysphagia and its acoustic characteristics. A total of 348 samples of expiratory sounds were collected from 61 patients with dysphagia whose expiratory sounds were recorded during VF. The VF results were evaluated by one dentist and categorized into three groups: safe group (SG), penetration group (PG), and aspiration group (AG). The duration and maximum amplitude of expiratory sounds produced were measured as the domain characteristics on the time waveform of these sounds and compared among the groups. Time window-length appropriate for FFT and acoustic discriminate values (AD values) of SG, PG, and AG were also investigated. The groups were analyzed using analysis of variance and Scheffé's multiple comparison method. The maximum amplitude of SG was significantly smaller than those of PG and AG. The mean duration in SG (2.05 s) was significantly longer than those in PG (0.84 s) and AG (0.96 s). The AD value in SG was significantly lower than those in PG and AG. AD value detects penetration or aspiration, and can be useful in screening for dysphagia.

Instructors’ Perspectives of Challenges and Barriers to Providing Effective Feedback

Instructor perspectives regarding the challenges they experience in enacting effective feedback processes have not been the focus in the literature on effective feedback processes. This study investigated the challenges that instructors experienced in providing effective feedback to students between January and April 2020, particularly considering campus closures and the shift to online learning in response to the COVID-19 pandemic. This study consisted of six focus groups held between January and April 2020 with five instructors from different disciplines at the same institution with class sizes ranging from 14 to 82. Through a thematic analysis using a constant comparison method, it was found that the biggest challenges instructors experienced in providing effective feedback was their own workload, the disruption that student inaction on feedback brought to the feedback process, and how the instructors managed their own affective responses and mindsets towards feedback. These findings are discussed within the context of the COVID-19 pandemic and based on these findings, recommendations for instructors include considering their own limitations when designing feedback processes and checking their beliefs about feedback with their students’ perspectives on feedback in order to align understanding.

Eye Size Affects Cuteness in Different Facial Expressions and Ages

Researchers have suggested that infants exhibiting baby schema are considered cute. These similar studies have mainly focused on changes in overall baby schema facial features. However, whether a change in only eye size affects the perception of cuteness across different facial expressions and ages has not been explicitly evaluated until now. In the present study, a paired comparison method and 7-point scale were used to investigate the effects of eye size on perceived cuteness across facial expressions (positive, neutral, and negative) and ages (adults and infants). The results show that stimuli with large eyes were perceived to be cuter than both unmanipulated eyes and small eyes across all facial expressions and age groups. This suggests not only that the effect of baby schema on cuteness is based on changes in a set of features but also that eye size as an individual feature can affect the perception of cuteness.

Lessons Learned: Occupational Therapy in Nursing Homes during the First Wave of COVID-19 in Spain

This research aims to explore the perception that occupational therapists working in elderly care facilities have about the measures implemented against the COVID-19 pandemic in their resources, and the impact that these measures have had on occupational therapy in these facilities. An interpretive paradigm was selected, using a qualitative approach and a phenomenological design. Sixteen occupational therapists working in elderly care facilities in two Spanish regions were included. Data were collected through semi-structured interviews. A discourse analysis of the narrative information was carried out using open, axial, and selective coding processes and the constant comparison method. Four themes were extracted from the analysis results: The initial chaos in senior centers; The blurring of occupational therapists’ roles; The emergence of technology; and organizational and therapeutic proposals for future pandemics. The pandemic had a significant impact on the care and therapeutic processes in elderly care facilities. Occupational therapists had to stop performing their functions to dedicate themselves to other support, auxiliary or communication tasks between the center and the families. Similarly, it is worth noting the emergence of low-cost technology to facilitate communication and to carry out some therapeutic interventions.

MSSA: Constant Time State Search through Multi-Scope State Area

In the stateful data plane, the switch can record the state and forward packets based on the local state. This approach makes it possible to integrate complex network applications into the data plane, thus reducing the amount of communication required between the switch and the controller. However, due to the time it takes to look up the state for packets, packet-forwarding latency has increased. With increased network traffic, a large number of states may be recorded in the switch, and the problem of increased packet-forwarding latency caused by the lookup state becomes more serious. In this paper, we propose the multi-scope state area (MSSA) for recording state inside the switch, which can achieve a fixed-time state lookup in a large-scale state. MSSA divides the state sharing scope by associating with the switch’s multiple match–action tables, and the shared scope is used to determine the state area for recording state. When processing a packet, the state required will only be in a limited number of states that are recorded in a few state areas. We implemented a prototype pipeline that supports MSSA based on Intel’s DPDK framework and investigated the effect of state type, number, location, and comparison method on state search/insertion time. The results show that the cost of MSSA search state is constant, regardless of the number of states, and MSSA has a high space utilization rate.

Metabolic Disturbance Induced by the Embryo Contributes to the Formation of Chalky Endosperm of a Notched-Belly Rice Mutant

Grain chalkiness is a key quality trait of the rice grain, whereas its underlying mechanism is still not thoroughly understood because of the complex genetic and environmental interactions. We identified a notched-belly (NB) mutant that has a notched-line on the belly of grains. The line dissects the endosperm into two distinct parts, the upper translucent part, and the bottom chalky part in the vicinity of the embryo. Using this mutant, our previous studies clued the negative influence of embryo on the biochemical makeup of the endosperm, suggesting the need for the in-depth study of the embryo effect on the metabolome of developing endosperm. This study continued to use the NB mutant to evolve a novel comparison method to clarify the role of embryo in the formation of a chalky endosperm. Grain samples of the wild-type (WT) and NB were harvested at 10, 20, and 30 days after fertilization (DAF), and then divided into subsamples of the embryo, the upper endosperm, and the bottom endosperm. Using non-targeted metabolomics and whole-genome RNA sequencing (RNA-seq), a nearly complete catalog of expressed metabolites and genes was generated. Results showed that the embryo impaired the storage of sucrose, amino acid, starch, and storage proteins in the bottom endosperm of NB by enhancing the expression of sugar, amino acids, and peptide transporters, and declining the expression of starch, prolamin, and glutelin synthesis-related genes. Importantly, the competitive advantage of the developing embryo in extracting the nutrients from the endosperm, transformed the bottom endosperm into an “exhaustive source” by diverting the carbon (C) and nitrogen (N) metabolism from synthetic storage to secondary pathways, resulting in impaired filling of the bottom endosperm and subsequently the formation of chalky tissue. In summary, this study reveals that embryo-induced metabolic shift in the endosperm is associated with the occurrence of grain chalkiness, which is of relevance to the development of high-quality rice by balancing the embryo–endosperm interaction.

Enhancing energy efficiency for cellular-assisted vehicular networks by online learning-based mmWave beam selection

Millimeter Wave (mmWave) technology has been regarded as a feasible approach for future vehicular communications. Nevertheless, high path loss and penetration loss raise severe questions on mmWave communications. These problems can be mitigated by directional communication, which is not easy to achieve in highly dynamic vehicular communications. The existing works addressed the beam alignment problem by designing online learning-based mmWave beam selection schemes, which can be well adapted to high dynamic vehicular scenarios. However, this kind of work focuses on network throughput rather than network energy efficiency, which ignores the consideration of energy consumption. Therefore, we propose an Energy efficiency-based FML (EFML) scheme to compensate for this shortfall. In EFML, the energy consumption is reduced as far as possible under the premise of meeting the basic data rate requirements of vehicle users, and the users requesting the same content in close proximity can be organized into the same receiving group to share the same mmWave beam. The simulation results demonstrate that, compare with the comparison method with best energy efficiency, the proposed EFML improves energy efficiency by 17–41% in different scenarios.

Seeking Choice to Fulfill Health Literacy Needs: Health Literacy Opportunities for Consumers in Hospital Waiting Areas

In this research, we explore and theorize on the potential of hospital outpatient rehabilitation waiting areas to respond and contribute to the health literacy needs of consumers. Constructivist grounded theory informed the sampling and analytical procedures. Thirty-three consumers attending outpatient rehabilitation for a range of health conditions were recruited to this multi-site study. Semi-structured interview and participant observation data were collected and analyzed concurrently using the constant comparison method. The substantive theory of “seeking choice to fulfill health literacy needs” and five interdependent categories were developed. Results indicated that consumers sought choice reflective of their needs; however, the waiting area offered limited choice. Consumers shared ideas to address the lack of choice. Results provide insight into the health literacy needs of consumers in hospital outpatient waiting areas and how health services can appropriately respond to these needs. Future research should investigate the effect of health service environments on health outcomes.

THE ISSUES OF EVIDENCE FACILITATION IN THE REGULATION OF PACKAGE TRAVEL AND HOTEL SERVICES IN THE CONTEXT OF PROTECTING TRAVELLERS AND TOURISTS

Purpose. The aim of the article is to show the significance and diversity of legal constructions concerning the facilitations of proof in provisions regulating package travel and hotel services in the context of protecting travellers and tourists. Method. Analysis regarding the regulation of package travel and hotel services including the facilitations of proof are carried out using the formal-dogmatic and legal comparison method. The comparative method has a significant meaning for the proper interpretation of provisions regulating package travel and hotel services due to the interpenetration of national and international regulations. In the process of recreating norms from legal provisions, it is therefore helpful to analyse their similarities and differences. Findings. The provisions regulating package travel and hotel services include the facilitations of proof which improve the legal situation of travellers and tourists, as well as ensuring their protection. Research and conclusions limitations. There is no comprehensive study on facilitations of proof in the regulation of package travel and hotel services in literature on the subject. Practical implications. Conclusions resulting from the article will allow to determine the proper nature of the provisions referring to the facilitations of proof in the regulation of package travel and hotel services, which will enable their proper application in practice. Originality. The issue of the facilitations of proof in the regulation of package travel and hotel services has not been comprehensively researched so far. Type of work. Problem article.