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Loose Tangle is a concept in graph theory that has a dual relationship with branch-width which is well-known graph width parameter. Ultrafilter, a fundamental notion in mathematics, is similarly known to have a dual relationship with branch-width when extended to a connectivity system (X, f). In this compact paper, we revisit and contemplate the interplay between Loose Tangle and Filter through the lens of a submodular partition function.

Linear-width is a well-regarded width parameter in graph theory. The constructs of linear loose tangle and linear tangle present obstacles to attaining linear-width. In this succinct paper, our primary focus will be the exploration of maximal linear loose tangles.

Student project management is becoming increasingly important in various settings such as technical clubs, planning clubs, and research laboratories. However, effective methodologies for managing student-led projects have not yet been established. This study aims to address key issues related to cost and motivation in student-led projects and propose effective improvement plans. The significance of this study lies in its potential to identify challenges faced in current student project management practices and offer solutions to mitigate risks. By sharing our findings, we aim to encourage further research on this topic and promote the adoption of effective methodologies for managing student-led projects. Article visualizations

The domain of Information and Communication Technology (ICT) education has garnered significant consideration in recent times. However, several challenges are inherent to this area of study, including monetary expense, temporal factors, pedagogical environment, teacher training programs, incentive, syllabus design, and health-related concerns. This paper presents an analysis of the difficulties encountered in the realm of ICT education in Japan, taking into account ten different perspectives. Article visualizations

Recently, Project based Learning has garnered significant attention as a pedagogical approach. This paper aims to scrutinize and examine the advantages and impediments of Project based Learning from diverse standpoints. It intends to investigate and analyze the benefits and challenges of this educational method, while also considering related concepts such as Problem solving Based Learning. Article visualizations

[Purpose] The relationship between quality of life and life-space mobility in community-dwelling older adults has recently been reported. The present study aimed to elucidate this relationship in home-based rehabilitation users with limited life-space mobility and loss of independence in activities of daily living. [Participants and Methods] The study population comprised 33 home-based rehabilitation users. The participants were expected to have a wide range of the level of independence in activities of daily living; therefore, they were categorized into three groups according to the Barthel Index score: independent (95–100 points), moderately disabled (90–65 points), and severely disabled (60–0 points) groups. We examined the relationships among the Philadelphia Geriatric Center Morale Scale, Life-Space Assessment, and Barthel Index scores and age. [Results] We detected a strong positive correlation between the Philadelphia Geriatric Center Morale Scale and Life-Space Assessment scores in the independent group; however, no significant correlations were observed in the moderately and severely disabled groups. [Conclusion] Our findings suggest a relationship between subjective well-being and life-space mobility in home-based rehabilitation users who are mostly independent in activities of daily living. However, owing to the small sample size and characteristics of the scales used in this study, further studies are warranted to verify these results.

This study revealed the effects of tissue plasminogen activator (tPA) on medium-term functional independence in patients with stroke. We retrospectively examined 240 patients from April 2016 to March 2019 and selected 68 who met our criteria. After adjusting the functional status at the onset by propensity score matching, the functional independence measure (FIM) on admission to and discharge from the convalescent rehabilitation wards was compared between the groups classified by the presence or absence of tPA. Twelve pairs were derived by propensity score matching. Upon admission to the convalescent rehabilitation ward, the median score of the FIM was significantly higher in the tPA group than in the non-tPA group (P = .028). Patients in the tPA group had higher median FIM scores at discharge than those in the non-tPA group (P = .060). The difference in the independence level of activities of daily living (ADL) between the groups with and without tPA may gradually decrease with continuous inpatient rehabilitation. However, the tPA group tended to have high levels of independence in ADL at the time of discharge.

The purpose of this study was to understand the relationship between abdominal muscle strength and recovery of upper limb function, after adjusting for various confounding factors, such as age, gender, and sensory function.We retrospectively analyzed data of 78 sub-acute stroke patients with mild-to-moderate upper limb dysfunction. Participants were divided into two groups, strong and weak, according to the abdominal muscle strength. The improvement of scores on the Simple Test for Evaluating Hand Function was compared between the groups. We employed propensity score matching to adjust for numerous relevant variables, including age, affected side, duration from onset, upper limb function, grip strength, sensory function, visuospatial perception, motivation, and cognitive function at admission.The improvement of scores on the Simple Test for Evaluating Hand Function of the strong group was significantly larger than the weak one, both before and after matching. This trend was noted in the subgroup analysis of participants with moderate dysfunction on admission; however; the trend was not clearly noticeable in participants with mild dysfunction.Our results suggest that abdominal muscle strength is significantly associated with the recovery of upper limb function in sub-acute stroke patients, especially in those with moderate upper limb dysfunction.Implications for RehabilitationAbdominal muscle strength is associated with the recovery of upper limb function in subacute stroke patients with moderate upper limb dysfunction.Abdominal muscle strength can be used as a predictive factor for the prognosis of upper limb function in stroke patients.

Objective: Previous studies have reported the relationship between nutritional status and gait independence in elderly fracture patients. However, the degree to which nutritional indicators are related to gait independence is unclear. The purpose of this study is to calculate a cutoff value for a nutritional indicator related to gait independence in patients with hip and vertebral compression fractures. Method: This study included 69 patients (33 hip fracture, 36 vertebral compression fracture) who underwent rehabilitation at a convalescent rehabilitation ward. The relationships between nutritional indexes (Mini-Nutritional Assessment-Short Form [MNA(Ⓡ)-SF] and skeletal muscle mass index [SMI] ) at admission and gait independence at discharge were analyzed using logistic regression. In addition, receiver operating characteristic analysis was performed to calculate a cutoff value that predicts gait independence. Results: Among the nutritional indicators used in this study, only MNA(Ⓡ)-SF was significantly able to predict gait independence at discharge, and this association was maintained, even after adjustment for confounders. The calculated MNA(Ⓡ)-SF cutoff values were 5.5 (sensitivity 100%, specificity 46.3%) and 7.5 points (sensitivity 67.9%, specificity 78.0%). Conclusion: This study suggests that MNA(Ⓡ)-SF may be an index for predicting gait independence in patients with hip or vertebral compression fractures in the convalescent rehabilitation ward. The cutoff values calculated in this study were simple and useful index for physical therapists to interpret the results of MNA(Ⓡ)-SF.

Previous reports indicate that the right ventrolateral prefrontal cortex (VLPFC) is involved in emotional regulation. However, most such studies were performed under unphysiological conditions, like the administration of transcranial direct current or repetitive transcranial magnetic stimulation. We have shown that the right VLPFC is stimulated by an acute bout of daily activity, such as cleaning. Here, we investigated the relationship between the right VLPFC and mood changes using this system. Fourteen young adults vacuumed a floor as a cleaning task and kept a standing position as a control task on separate days. The oxyhemoglobin (oxy-Hb) and deoxy-hemoglobin (deoxy-Hb) signals of the prefrontal cortex were measured during the tasks. The mood scale scores of Profile of Mood States 2nd edition (POMS) and Two-Dimensional Mood Scale (TDMS) were measured before and after both tasks. The differences in subscale scores between pre- and post-tasks in both scales were calculated as ΔPOMS and ΔTDMS. The cleaning task significantly increased the oxy-Hb signal in the bilateral VLPFC and right frontopolar, but did not affect the deoxy-Hb signals. The control task significantly decreased the oxy-Hb signal in some brain regions. The Confusion-Bewilderment score in POMS changed after the cleaning task. Importantly, the oxy-Hb signal in the right VLPFC was negatively correlated with the ΔPOMS Confusion-Bewilderment score. The activity of the right VLPFC stimulated by the cleaning task might have a correlation with the Confusion-Bewilderment mood state.

This paper extends the concept of filter on X into (X, f), where X is a finite underlying set and f is a symmetric submodular function from $$2^X$$ to N. Then, we show a cryptomorphism between a free ultrafilter and co-tangle on (X, f). The paper also provides game-theoretical interpretations of a branch decomposition tree and a free ultrafilter on (X, f).

The concept of linear tangle was introduced as an obstruction to mixed searching number. The concept of single ideal has been introduced as an obstruction to linear-width. Moreover, it was already known that mixed search number is equivalent to linear-width. Hence, by combining those results, we obtain a proof of the equivalence between linear tangle and single ideal. This short report gives an alternative proof of the equivalence.

Objectives: The aim of this study was to investigate whether an interaction exists between sensory impairment and age with respect to the recovery of upper-limb function in patients with subacute stroke. Methods: This retrospective observational study included 83 patients recovering from subacute stroke in a rehabilitation hospital ward. The recovery of upper-limb function in four groups classified by age and sensory impairment were compared using analysis of covariance. Furthermore, multiple regression analysis was performed with recovery of upper-limb function as the dependent variable and with binarized sensory impairment and binarized age and their interaction term as the independent variables. Results: The estimated marginal means of upper-limb recovery were significantly higher in the non-late elderly (≤74 years) without sensory impairment group than in the other three groups. No significant differences were observed among the following three groups: the non-late elderly with sensory impairment, the late elderly (≥75 years) without sensory impairment, and the late elderly with sensory impairment. In multiple regression analysis, the interaction term between sensory impairment and age was significantly associated with improvement in upper-limb function (β=0.16, P

Background: A severely obese woman (39.8 kg/m2) with relapsed acute myeloid leukemia was admitted to our hospital to undergo salvage chemotherapy followed by cord blood transplantation (CBT). Case: During the salvage chemotherapy period, a 70-day weight loss program addressing diet and exercise was administered. After the 70-day intervention, the patient’s body weight and body fat mass had decreased (8.6% and 15.0%, respectively) without any adverse events. The number of available cord blood units with total nucleated cells per body weight greater than 2 × 107/kg was zero at admission and two after weight loss; therefore, CBT could be performed. Discussion: Considering this case, we suggest that a weight loss program combining exercise and nutrition therapy may help patients scheduled for hematopoietic stem cell transplantation by focusing on risk management.

Objectives The purpose of this study was to clarify the interaction among cognitive and physical functions associated with toilet independence in stroke patients. Materials and methods We retrospectively examined 125 stroke patients. We performed decision tree analysis to detect the interaction associated with toilet independent using assessment of motor function on the affected side, muscle strength on unaffected side, trunk function, neglect, motivation, and cognitive function. The interactions detected via decision tree confirmed the existence and influence using logistic regression. Results The verticality test of the Stroke Impairment Assessment Set (3 or ≤2 points) was selected at the first level, and the Revised Hasegawa's dementia scale (≥19 or ≤18 points) and age (≥70 or ≤69 y) were selected at the second level of decision tree. Interaction terms created by these factors were significantly associated with toilet independence after adjusting for the independent influence of each factor using logistic regression. Conclusions Our results show an interaction of trunk and cognitive functions or trunk function and age associated with toilet independence. The probability of toilet independence dramatically changes if two factors of each interaction were satisfied in stroke patients.

Spherical tokamak (ST) research in Japan has produced many innovative results: (i) plasma start-up to I p > 70 kA was achieved by electron cyclotron wave (ECW) with N ∥ = 0.75, while electron heating to T e > 500 eV was achieved with N ∥ = 0.26 on QUEST. (ii) The radiofrequency (RF)-induced transport model was combined with the x-ray emission model, and extended magnetohydrodynamics equilibrium with kinetic electrons was developed to interpret fast-electron-dominated lower hybrid wave sustained plasmas on TST-2. (iii) Density as high as 30 times the cutoff density was achieved by electron Berstein wave current drive combined with electron beam injection on LATE. (iv) Multiple plasmoids formed by tearing instability in the elongated current sheet were observed, and flux closure and ion heating by plasmoid-mediated fast magnetic reconnection were observed on HIST. (v) Optimization of ECW-assisted inductive start-up with a vertical field with positive decay index was performed on TST-2. (vi) Stabilization of the vertical displacement event by a set of upper and lower helical field coils was demonstrated on TOKASTAR-2. (vii) A 6 h discharge was achieved by cool-down of the center stack cover on QUEST, where the plasma duration limit was consistent with the wall saturation time estimated by modeling. (viii) Extension of ion heating by plasma merging was achieved on TS-3U, TS-4U, UTST, MAST, and ST40.

Developing support and an environment for patients with dementia in hospitals is important. This study aims to assess the immediate effect of one-session cognitive stimulation intervention on the mood of patients with dementia in a hospital as preliminary evidence. This study included 33 female patients. The cognitive stimulation intervention was conducted in the day room of the hospital ward by two occupational therapists. The patients participated in one or more sessions. The cognitive stimulation intervention was designed to discuss current affairs that implicitly stimulate memory, executive function, and language skills, according to the cognitive stimulation definition. Outcomes were evaluated using a two-dimensional mood scale. The primary outcome was pleasure. The before and after session scores for the first session and the average score before and after each session at multiple times were compared. The patients’ pleasure showed significant improvements in both analyses. These results may indicate that one-session Cognitive stimulation intervention in a hospital effectively improves a mood of pleasure immediately. This study is the first report to provide preliminary evidence on the beneficial alterations of mood after one-session cognitive stimulation intervention for patients with dementia in hospitals. Cognitive stimulation intervention may be an effective non-pharmacotherapy for these patients.

The factors necessary for successful use of chopsticks or a spoon, by patients with a paretic upper extremity (UE) following stroke are unknown.We identified the functional capacities and interactions related to chopsticks or spoon use in patients with right hemiplegia following stroke.Participants were 139 stroke patients with right hemiplegia who required rehabilitation, divided into the following three categories: able to use chopsticks, able to use a spoon, or unable to use a spoon. We collected sociodemographic data, medical data, physical and cognitive function data, and functional grades associated with chopsticks or spoon use by the paretic dominant UE while eating. We identified a complex interaction of variables relating to functional use of chopsticks or a spoon using a classification and regression tree analytic process.Patients with UE Brunnstrom recovery stage (BRS)IV, and a Hasegawa Dementia Scale - Revised (HDS-R) score16 had a 91.3% probability of being able to use chopsticks. Moreover, patients with a UE BRS ofIV, and the HDS-R score ≤16 had a 66.7% probability of being able to use a spoon. By contrast, patients with a UE BRS of ≤IV had a 90.5% probability of not being able to use a spoon.The interaction of BRS as a measure of UE function and HDS-R score as a measure of cognitive function affect the ability of patients with stroke histories to functionally use the paretic UE to operate chopsticks or a spoon.

Background Dressing performance relates strongly with balance function, and it is mainly influenced by the motor functions of the affected and unaffected lower extremity and trunk function in stroke patients. For the remedial approach to be effective, ascertaining the degree of function needed in the affected and unaffected lower extremities and trunk to achieve balance function requisite for dressing is necessary. Objectives This study aimed to elucidate standards of lower extremity and trunk function necessary for stroke patients to gain balance requisite for dressing. Methods The study included 105 first-time stroke patients, who were classified by Berg Balance Score ≥44 or not and ≥32 or not which are previously reported standard indicators for independent and supervision level in dressing. Receiver operating characteristic curves were determined for the stroke impairment assessment item of sensory and motor function of affected lower extremity, abdominal muscle strength, and knee extension muscle strength. Results Area under the curve was ≥0.7 for all variables. In BBS 44-point analyses, the calculated cut-off values were 4 points for SIAS hip flexion, 4 points for SIAS knee extension, 2 points for SIAS foot pat on the affected side, 3 points for SIAS tactile and position sensation of the affected lower extremity, 3 points for SIAS abdominal muscle strength, and 3 points for SIAS knee extension muscle strength on the unaffected side. Conclusions These cut-off values can be used as targets for motor functions, when using the remedial approach for achieving dressing independence.

Kenji Tsuchiya,1 Shinichi Mitsui,1 Ryuji Fukuyama,2 Noriki Yamaya,3 Takaaki Fujita,4 Kaori Shimoda,1 Fusae Tozato1 1Department of Rehabilitation Sciences, Gunma University Graduate School of Health Sciences, Gunma, 2Department of Rehabilitation, Gunma Seishi Ryougoen, Gunma, 3Department of Health Sciences, Gunma University School of Medicine, Gunma, 4Department of Rehabilitation, Faculty of Health Sciences, Tohoku Fukushi University, Miyagi, Japan Purpose: Although acute bouts of exercise reportedly have beneficial effects on executive function, inactive people may find it difficult to start exercising. In this study, we focused on housework activities (HAs) that generate a sense of accomplishment and require a mild intensity of physical activity. We examined the impact of an acute bout of HA on executive function and oxygenated hemoglobin (oxy-Hb) flow to related cortical regions. Materials and methods: Twenty-five participants (age, 18–21 years; mean, 19.88±0.60years; six males and 19 females) underwent two experiments, ie, HA and control experiments, which were conducted on different days. Participants vacuumed a dirty floor in the HA experiment and mimicked the same motion with an unplugged vacuum cleaner on a clean floor in the control experiment.Results: Heart rate recorded during the experiments showed no significant difference in the intensity of physical activity between control and HA groups. A questionnaire revealed a sense of accomplishment after completing the HA experiment. Participants performed the Stroop color–word task (SCWT) pre- and post-experiments; cortical hemodynamic changes were simultaneously monitored using functional near-infrared spectroscopy. Variation in Stroop interference scores for SCWT total response between pre- and post-experiments was significantly higher in the HA group than in the control group, and that for SCWT correct response showed a similar trend. Variation in the Stroop interference score for oxy-Hb flow to the right ventrolateral prefrontal cortex (R-VLPFC) showed the same trend.Conclusion: Thus, HAs may have a greater beneficial effect on executive function than other physical activities through the activation of PFC, including R-VLPFC. Keywords: cognitive function, near-infrared spectroscopy, cleaning, stroop interference, positive emotion, prefrontal cortex

The applicability of tokamak, helical and laser fusion reactors as a volumetric fusion neutron source has been examined using the systems codes that have been utilised for the conceptual design of DEMO and commercial reactors in Japan. This study has clarified the characteristics of reactor-based volumetric neutron sources that can be designed based on the current physics and engineering basis with a reasonable running cost (∼5B Yen/year). Although the achievable neutron flux is 2–3 orders lower than that of accelerator driven neutron sources, tokamak and helical neutron sources can provide a much larger irradiation area for the test of large components. Laser neutron sources have both high operability and tritium breeding capacity. These reactor-based neutron sources also serve as an integrated test bed of the entire reactor system.

Improvement of the vertical stability of tokamak plasma with only local coils above and below the plasma was observed for the first time. The local coils in triangular shape, named upper and lower triangular (ULT) coils, were installed in TOKASTAR-2, a tokamak-stellarator hybrid device at Nagoya University. The ULT coils generate the effective radial magnetic field BReff, which is expected to stabilize the plasma vertical position. The region of the plasma position where vertical displacement events (VDEs) did not occur was extended by applying the ULT magnetic field. Stabilization of the plasma vertical position was related to the ratio of the vertical-direction derivative of the effective radial field generated by the ULT coils, ∂BReff/∂Z, to that of the axisymmetric radial field, ∂BR/∂Z. Moreover, even when VDEs occurred in discharges with the ULT magnetic field, the VDE speed was mitigated by the effect of the ULT magnetic field; the VDE speed increased with ∂BR/∂Z, while decreased with ∂BReff/∂Z.

Purpose This study aimed to clarify which cognitive and physical factors are associated with the need for toileting assistance in stroke patients and to calculate cut-off values for discriminating between independent supervision and dependent toileting ability. Method This cross-sectional study included 163 first-stroke patients in nine convalescent rehabilitation wards. Based on their FIMⓇ instrument score for toileting, the patients were divided into an independent-supervision group and a dependent group. Multiple logistic regression analysis and receiver operating characteristic analysis were performed to identify factors related to toileting performance. The Minimental State Examination (MMSE); the Stroke Impairment Assessment Set (SIAS) score for the affected lower limb, speech, and visuospatial functions; and the Functional Assessment for Control of Trunk (FACT) were analyzed as independent variables. Result The multiple logistic regression analysis showed that the FIMⓇ instrument score for toileting was associated with the SIAS score for the affected lower limb function, MMSE, and FACT. On receiver operating characteristic analysis, the SIAS score for the affected lower limb function cut-off value was 8/7 points, the MMSE cut-off value was 25/24 points, and the FACT cut-off value was 14/13 points. Conclusion Affected lower limb function, cognitive function, and trunk function were related with the need for toileting assistance. These cut-off values may be useful for judging whether toileting assistance is needed in stroke patients.

[Purpose] Dressing is an activity of daily living for which stroke patients often show discrepancies between capacity and actual performance. The aim of this study was to elucidate the physical function and unilateral spatial neglect in stroke patients that reduce their level of actual performance despite having the capacity for dressing independently. [Subjects and Methods] This retrospective study included 60 first-time stroke patients judged by occupational therapists as able to dress independently. The patients were divided into two groups according to their FIM(®) instrument scores for dressing the upper and lower body: an independent group with both scores ≥6 and an assistance group with one or both scores ≤5. After adjusting for confounding factors through propensity score matching, the groups were compared by using Stroke Impairment Assessment Set items, the Simple Test for Evaluating Hand Function of both upper limbs, and the Berg balance scale. [Results] The assistance group had a significantly lower score for the Berg balance scale than the independent dressing group (31.0 ± 12.3 vs. 47.8 ± 7.4). [Conclusion] The results of the present study suggested that the balance function has an effect on the discrepancy between dressing capacity and performance.

[Purpose] Interventions using music, physical exercise, and reminiscence therapy are widely used both for rehabilitation and care of the elderly. This study aimed to investigate the effect of structured interventions comprising music, physical exercise, and reminiscence therapy on cognitive function and quality of life of the community-dwelling elderly. [Subjects and Methods] The study included 15 community-dwelling elderly people who used a day-care center. Participants underwent sessions comprising the following three factors: 1) singing songs familiar to the elderly; 2) physical exercise to music; and 3) observation of historical pictures. Sessions were conducted once or twice per week, 30 to 40 min per day, for 10 weeks. Pre and post interventions of the Mini Mental State Examination, the Behavioral Rating Scale for the Elderly, and the SF-8 were compared. [Results] No significant difference was observed between pre- and post-intervention scores on the Mini Mental State Examination and the Behavioral Rating Scale for the Elderly. However, the post intervention physical component summary of SF-8 was significantly higher than the pre intervention summary. [Conclusion] This study suggests that interventions comprising music, physical exercise, and reminiscence therapy may contribute toward the improvement of elderly individuals' health-related quality of life, especially physical health.

PURPOSE: To create a model to predict independence in the activities of daily living at discharge in stroke patients in the convalescence stage. The study also examined whether the predictability of functional independence at discharge would be improved by creating a specific prediction model for each rehabilitation facility. METHODS: To create the prediction model, data of 65 first stroke patients were analyzed using stepwise multiple regression analysis. Age, time post-stroke, Functional Independence Measure motor subscale score, Functional Independence Measure cognitive subscale score, Stroke Impairment Assessment Set, Berg Balance Scale, and Vitality Index at admission were selected as predictor variables of Functional Independence Measure motor subscale score at discharge. The accuracy of this model was compared with an existing prognosis model using data from 98 first-stroke patients, comparing the difference between actual and predicted Functional Independence Measure motor subscale score at discharge for each model. RESULTS: The prediction formula created included admission Functional Independence Measure motor subscale score, Vitality Index, age, and Stroke Impairment Assessment Set score. The adjusted R square value was 0.60. The prediction errors of the new and previous models were −2.5 ± 10.8 and −18.3 ± 18.7, respectively, which were significantly different. CONCLUSION: Our results suggest that prediction accuracy may be improved by creating prediction formulas specifically for each institution.

Background Little is known about the existence and impact of interactions among multiple impairments to gait independence. The purpose of this study is to reveal the interaction of physical functions and its impact on gait independence in stroke patients. Methods This retrospective study included 108 subacute stroke patients. We conducted a decision tree analysis to examine the existence of interactions in relation to gait independence among the gross motor function of lower limb, knee extension strength, sensory function, and trunk function. Further, we confirmed the existence and impact of interaction detected via the decision tree after adjusting for the effects of confounding factors using logistic regression. Results The knee extension strength and proprioception on the affected side were selected in the first and second level of the decision tree. In addition, the knee extension strength was selected in the third level. The interaction of the knee extension strength and proprioception on the affected side was significantly associated with gait independence, both before and after adjusting for age, visuospatial perception, and cognitive functions. Conclusions Our results suggest that the interaction of the knee extension strength and proprioception on the affected side is strongly associated with gait independence in stroke patients.