bluuebunny/crossref_metadata_2025_split huggingface dataset:
Online regulation of walking gate speed for a five link bipedal robot via adaptive deforming of virtual holonomic constraints
Authors: Kakaei Mohammad Mehdi , Salarieh Hassan , Sohrabpour Saeed 
Published: July 2022

Abstract
Bipedal robots with instantaneous impact form a subclass of the dynamic systems with hybrid and under-actuation properties. Because of these two complex properties, finding an effective control method to show a rule base motion is difficult. In particular, few works are focused on how to regulate gate speed based on analytical stability and its own model which boost the robustness and accuracy. This is, thereby, still an open and challenging issue. In this paper, we present a solution for online regulating walking gait speed of bipedal robot based on its model while simultaneously stabilizing a closed orbit in the constraint manifold space. Suitable paths are therefore taken as the virtual holonomic constraints, which are then characterized by some parameters. By proposing a stability theorem, a hierarchical controller is designed in two levels. At the low-level, the controller stabilizes the constraints as an output of the system state space, thereby creating the constraint manifold. In order to achieve the desired gate speed, the high-level controller adaptively deforms this manifold through the characterization parameters. In this design, the robustness of the controller is taken into consideration to prevent the system from being affected by disturbances. Simulation results show that the control method has a good performance and works smoothly in regulating the robot gate speed. Furthermore, the robot is also resistant to disturbance during movement and performs a stable motion over time.
Sources and predictors of work-related stress among Omani Nurses: A cross sectional study
Authors: AL-Yaqoubi Safiya , Arulappan Judie 
Published: July 2022

Abstract
Background
Nurses experience high levels of stress as they deal with the patients having complex health care problems. Stress in nursing affects the practice of nursing profession worldwide. In response to this, the investigators explored the sources and predictors of work related stress among Omani Nurses.
Methods
Samples were selected through proportionate population sampling (PPS) from five selected tertiary care hospitals. Data were collected through self-administered nursing stress scale. The study included 383 Omani nurses. Descriptive and inferential statistics were used to analyze the data.
Results
The highest level of work-related stress was on the subscale of workload with a mean score of 8.99 followed by the subscale of emotional issues related to death and dying with a mean of 8.72. Omani nurses working in tertiary care hospitals were experiencing high levels of work-related stress due to workload secondary to severe shortage in number of nursing staffs and by performing non-specified work responsibilities. Work- related stress was associated with the nursing position as staff nurses, performing night shift and reduced job satisfaction.
Conclusion
The study's results may help in developing human resource strategies aimed at minimizing nurses’ stress and improving quality of health care and task force performance.
Identification of Discrete Two-dimensional Systems Using Hybrid Algorithm
Authors: Dehnavi Vahid Safari , Shafiee Masoud 
Published: July 2022

Abstract
This paper attempts to indicate the identification of discrete two-dimensional causal systems. Initially, two methods were proposed to estimate the order of model. Then, two models for identification used. The second model used a new hybrid algorithm to optimize the parameters. In the hybrid algorithm, the linear parameters are initialized by least square (LS) and optimized by recursive least square (RLS) with adaptive local forgotten factor in white noise condition. In colored noise conditions, by estimating the filter of noise, colored noise is converted to white noise. The hybrid algorithm optimizes nonlinear parameters by global nonlinear optimization algorithms such as metaheuristic algorithms. In metaheuristic algorithms, the grey wolf optimizer (GWO) and grasshopper optimization algorithm (GOA) with a new learning rate are used to optimize the nonlinear parameters. Finally, we proposed another method and nonlinear parameters optimized by backpropagation with a new algorithm proposed for determining the learning rate. The simulations reveal that the results are satisfying.
Increased Risk of All-Cause, Alzheimer’s, and Vascular Dementia in Adults with Migraine in Korea: a population-based cohort study
Authors: Hurh Kyungduk , Jeong Sung Hoon , Kim Seung Hoon , Jang Suk-Yong , Park Eun-Cheol , Jang Sung-In 
Published: July 2022

Abstract
Background: Studies investigating the association between migraine and dementia have reported inconsistent findings. This study aimed to evaluate whether patients with migraine have an increased risk of dementia compared to individuals without migraine.Methods: We obtained data from the 2002–2019 Korean National Health Insurance Health Screening Cohort. Non-migraine controls were selected using a 1:1 risk-set matching with a time-dependent propensity score. The main outcome was the development of all-cause dementia, and the secondary outcome was the development of each cause of dementia (Alzheimer’s, vascular, mixed or other specified, and unspecified dementia). The incidence rate of dementia was calculated using Poisson regression, and the association between migraine and dementia was evaluated using Cox proportional hazards regression.Results: Among 88,390 participants, 66.1% were female, and the mean baseline age was 55.3±9.4 years. During the study period, dementia cases were identified in 4,800 of the 44,195 patients with migraine and 3,757 of the 44,915 matched controls. The incidence rate of dementia was 139.6 (95% confidence interval [CI], 135.7–143.5) and 107.7 (95% CI, 104.3–111.1) cases per 10,000 person-years in patients with migraine and matched controls, respectively. Patients with migraine had a 1.30 (hazard ratio [HR], 1.30; 95% CI, 1.25–1.35), 1.29 (HR, 1.29; 95% CI, 1.23–1.35), 1.35 (HR, 1.35; 95% CI, 1.19–1.54), 1.68 (HR, 1.36; 95% CI, 1.00–1.83), and 1.30 (HR, 1.30; 95% CI, 1.17–1.45) times higher risk of developing all-cause dementia, Alzheimer’s dementia, vascular dementia, mixed or other specified dementias, and unspecified dementia than their matched controls, respectively.Conclusion: Our results suggest that migraine is associated with an increased risk of subsequent dementia. Further research is warranted to confirm these findings and to reveal the underlying mechanisms.
Treatment of rigid post-traumatic thoracolumbar kyphosis by a novel technique of spinal joints release
Authors: Wang Qing , Tang， Chao , Wang， GaoJu , Li， GuangZhou , Zhong， DeJun , Wang， Song , Ma Fei 
Published: July 2022

Abstract
Objective The purpose of this study was to evaluate the feasibility of a novel technique named spinal joints release (SJR) and observe its efficacy in treating rigid post-traumatic thoracolumbar kyphosis (RPTK).Methods RPTK patients who were treated by SJR with facet resection, limited laminotomy, clearance of the intervertebral space, and release of the anterior longitudinal ligament through the intervertebral foramen from August 2015 to August 2021 were reviewed. Operation time and intraoperative blood loss were recorded. The intraoperative, postoperative, and final follow-up complications were observed. The improvement in VAS score and ODI index were observed. Spinal cord functional recovery was evaluated by ASIA score. Improvement of local kyphosis (Cobb) was evaluated by radiography.Results Forty-three patients were successfully treated by the SJR surgical technique. There were no serious complications. The average operation time was 224 ± 31 min, and intraoperative blood loss was 450 ± 225 mL. All of the patients were followed up with an average of 26 ± 8.5 months. The VAS scores and ODI index improved significantly at the final follow-up. All of the 17 patients with incomplete spinal cord injury achieved more than one grade neurological recovery at the final follow-up. An 87% correction rate of kyphosis was achieved and maintained, with the Cobb angle decreasing from 27.7° preoperatively to 5.4° at the final follow-up.Conclusion Posterior SJR surgery for patients with RPTK has the advantages of less trauma and less blood loss, and kyphosis correction is satisfactory.
Negative experiences, social exclusion and unwanted attention on social media: Exploring the association with adolescent alcohol use
Authors: Ranganath Priya , Hjetland Gunnhild Johnsen , Finserås Turi Reiten , Brunborg Geir Scott , Hesse Morten , Skogen Jens Christoffer 
Published: July 2022

Abstract
Background
Adolescents’ presence on Social Media (SoMe) facilitates peer-connections making them susceptible to peer-influences and approval. Negative experiences on SoMe can affect adolescent stress and wellbeing, impelling their use of alcohol. This paper provides a novel understanding of the relationship between negative experiences on SoMe and key indicators of alcohol use in adolescents.
Methods
Data was collected from upper secondary school students (n = 3528, ages 16–19, 45% boys) in Bergen (Norway) using a web-based questionnaire during school-hours in 2020 and 2021. Dependent variables were alcohol consumption, binge drinking and scoring ≥ 2 points on the CRAFFT instrument screening for substance use problems in adolescents. Independent variables were two scales indicating “negative acts and exclusion” and “unwanted attention from others”. All models were adjusted for age, gender and subjective socioeconomic status. Results are presented as relative risk ratios (RRR), odds ratios (OR) and incidence rate ratios (IRR) with 95% confidence intervals.
Results
Using multinomial logistic regression models, “negative acts and exclusion” and “unwanted attention” were positively associated with trying alcohol (OR: 1.49 (95% CI 1.27–1.74) and 1.87 (95% CI 1.67–2.09) respectively, both p ≤ 0.001), with frequency and amount of alcohol consumed. Findings from logistic regression models indicated that “negative acts and exclusion” and “unwanted attention” were positively associated with i. CRAFFT-caseness (OR: 2.31 and 2.34) and ii. frequent binge drinking (OR: 1.55 and 1.89).
Conclusion
Both exclusion and unwanted attention on SoMe were associated with indicators of problematic drinking, including frequency, quantity, and consequences related to alcohol.
An approach for selecting appropriate mother wavelet and optimal level of decomposition for analyzing induction motor faults using quality parameters under variation in motor loading
Authors: Thakur Arunava Kabiraj , Mukherjee Alok , Kundu Palash Kumar , Das Arabinda 
Published: July 2022

Abstract
Wavelet transform is a widely used mathematical tool for analyzing fault signals. But the major problem lying with wavelet analysis is in the selection of the appropriate mother wavelet. Besides, selection of the optimal level of decomposition is also important since the complexity and time of computation increases proportionately as the level of decomposition increases. In this work, we have proposed a method for selecting an optimal mother wavelet and optimal level of decomposition of three phase fault current signals of induction motor, in order to achieve appreciably accurate result with optimized complexity. Here, we have analyzed the results using mother wavelets from the Daubechies (db), Coiflets (Coif) and Symlets (Sym) gropus and decomposed the fault current signals of three phase induction motors upto five levels. We have also varied the loading on the motor in three discrete steps in order to incorporate robustness to the model and analyzed the four major quality factors, viz., signal to noise ratio (SNR), root Mean square error (RMSE), peak signal to noise ratio (PSNR) and correlation coefficient (CC) for reaching a conclusion regarding optimum mother wavelet selection in favour of Symlet5 mother wavelet decomposed at level 4.
The gametogenic cycle and spawning of the Short-Necked Clam, Paphia undulata Born, 1778 from Timsah Lake, Suez Canal, Egypt
Authors: Mahmoud Mostafa A. M. , Yassien Mohamed H. 
Published: July 2022

Abstract
The Short-Necked Clam Paphia undulata is a marine edible bivalve consumed all over the world and locally in Egypt. In the past decade, its population declined across the Egyptian fisheries due to overexploitation and pollution. The gametogenic cycle and spawning studies of P. undulata were carried out during the period from January 2020 to December 2020 along Timsah Lake, Suez Canal, Egypt. Shell lengths of the collected clams ranged from 2.31 cm to 6.22 cm in males, 2.05 cm to 5.97 cm in females and 3.70 cm to 4.36 cm in hermaphrodite clams. These clams are functionally dioecious wherein male and female sexes are separate, with very low incidences of hermaphroditism. The sex ratio (male: female: hermaphrodite) of the clam population was 1.0: 1.07: 0.04. The onset of sexual maturity of both males and females was 2.3 cm and 2.7 cm respectively. Reproductive studies revealed that this species has a prolonged spawning season not restricted during a certain period.
A comparison of the effect of time-to-treatment on survival according to economic status of lung cancer patients with chronic diseases
Authors: Kim Woorim , Han Kyu-Tae 
Published: July 2022

Abstract
Purpose: The topic of providing timely treatment to lung cancer patients with chronic diseases has not been widely examined. This study therefore aimed to investigate the association between time-to-treatment and five-year mortality in lung cancer patients with diabetes, hypertension, or dyslipidemia.Methods: The National Health Insurance elderly cohort data (2002-2019) were used. The participants were 2,023 lung cancer patients with diabetes, hypertension, or dyslipidemia who underwent surgery. The Cox proportional hazards model was used to analyze the impact of time-to-treatment for first cancer treatment on five-year mortality. The cut-off value for time-to-treatment was set at 30 days. Sub-group analysis was conducted according to the economic status and the level of comorbidities. Results: Compared with individuals who received their first treatment for lung cancer in less than 30 days from diagnosis, patients who received their treatment after 30 days showed a higher risk of five-year mortality (HR 1.328, 95% CI 1.077-1.639). This difference in mortality risk was magnified in individuals of lower economic status or with a higher level of comorbidities.Conclusion: Lung cancer patients with diabetes, hypertension, or dyslipidemia who received their first treatment for cancer 30 days after diagnosis were more associated with five-year mortality. It emphasizes the importance of avoiding delays in the treatment and management of lung cancer with chronic diseases.
Efficacy of Extracts from Datura Metel L. for Psoriasis: A meta-analysis of case series and single arm studies
Authors: Sang Xiaopu , Bi Huanzhou , Tu Yijun , Wang Yihang , Wu Fenfang 
Published: July 2022

Abstract
Background Datura Metel L. has been used to treat psoriasis in China for a long time. The effect of extracts from Datura Metel L. for Psoriasis has not been previously confirmed. This study aimed to evaluate the efficacy of extracts from Datura Metel L. for patients with psoriasis.Methods PubMed, Cochrane Library, Embase, and other databases were searched from database inception until to September 1, 2021. A quality assessment and data extraction were performed by 2 independent reviews. We used a random-effects meta-analysis model to estimate the pooled curative effect, pooled odds ratio (OR), and 95% confidence intervals. Results Nine studies were included in Meta‐analysis, including a total number of 1778 patients with psoriasis. The case cure rate of Datura Metel L. intravenous therapy was 0.48 (95% CI: 0.33, 0.62) and of Datura Metel L. oral therapy was 0.42 (95% CI: 0.17, 0.68), respectively. The case effective rate of Datura Metel L. intravenous therapy was 0.91 (95% CI: 0.84, 0.97) and of Datura Metel L. oral therapy was 0.94 (95% CI: 0.88, 0.99), respectively. Conclusions The extracts from Datura Metel L. showed the potential to treat psoriasis, and intravenous therapy might be a promising treatment to cure psoriasis, which is likely affected by selection and publication bias, still need more high quality clinical studies.
Factors affecting the treatment decision making of patients with wet age- related macular degeneration: A qualitative study in China
Authors: Wan Junli , Zhang Feng , Tan Mingqiong , wang lu , Hu Shaoyi , Bian wei 
Published: July 2022

Abstract
Background: The treatment decision making of patients with wet age-related macular degeneration （WAMD）is a very complex process，However, the influencing factors of WAMD in treatment decision making have not been well described.Methods: We performed a patient led qualitative study to explore patient experiences with decision-making processes when admitted to hospital with wet age-related macular degeneration. A qualitative approach using semi-structured interviews was used. Analysis was conducted using the thematic analysis approach. Results: Twenty-six patients with WAMD participated in the study. Four major themes were identified from the original data analysis. These themes included patient level (interpersonal characteristics of the patient, confidence in one’s own disease knowledge, expectations of the outcome of being involved in treatment decision making, weighting benefits or risks from others’ experiences, and self-efficacy in decision making); clinician level (interpersonal characteristics of the clinician, technical terms used by doctors, providing relevant information about options, and decision support); interaction level (doctor–patient communication, unbalanced relationship between doctors and patients, and patients fully trusting the doctor’s decision); and the system level (discontinuity of visits, lack of sufficient communication time, and insufficient system configuration).Conclusion: Our study has identified the influencing factors of treatment decision making in patients with WAMD during treatment. According to these influencing factors, we can construct patient decision-making assistance tools and formulate intervention models to provide a theoretical basis for patients to participate in treatment decision making effectively.
Robust H∞ based model predictive control for Lipschitz nonlinear switched systems under asynchronous switching
Authors: Rahdan Ali , Abedi Mostafa 
Published: July 2022

Abstract
This paper proposes an asynchronous robust H∞ model predictive control scheme for discretetime Lipschitz nonlinear switched systems. It is assumed that there exist some mismatches between the switching of the subsystems and the controllers. For this purpose, two different types of cost functions have to be minimized, including the cost function with the finite horizon in the mismatched intervals and with the infinite horizon in the matched intervals. The control scheme is developed based on the multiple Lyapunov functions and persistent dwell time switching signal to ensure the H∞ performance. Therefore, conservative aspects of the other model predictive methods developed based on the common Lyapunov function and arbitrary switching signals are treated. Due to the online framework of the suggested strategy, fewer constraints have to be resolved simultaneously. So, there will be fewer feasibility problems and unexpected variations issues compared to offline methods, which are widely used in the literature of switched systems. The non-convex control scheme is formulated as an optimization problem in the framework of linear matrix inequality, as well as the optimal values of some parameters are obtained. Finally, a numerical example is developed, and the performance of the proposed scheme is evaluated.
Clinical Profile and Demographic Distribution of Pigment Dispersion Syndrome: An electronic medical record-driven big data analytics from an eye care network in India
Authors: Warjri Gazella Bruce , Das Anthony Vipin , Senthil Sirisha 
Published: July 2022

Abstract
Purpose: To describe the demographics and clinical profile of pigment dispersion syndrome (PDS) in patients presenting to a multi-tier ophthalmology hospital network in India. Methods: This cross-sectional hospital-based study included 2,961,706 new patients presenting between August 2010 and September 2021. Patients with a clinical diagnosis of PDS in at least one eye were included as cases. The data were collected using an electronic medical record system. Results: Overall, 403 (0.014%) patients were diagnosed with PDS. Three fourth of the patients were male (75.43%) and 91.81% had bilateral affliction. The most common age group at presentation was during the fourth decade of life with 100 (24.81%) patients. In the 773 eyes, 443 (57.31%) eyes had mild or no visual impairment (<20/70) and blindness (>20/400) in 81 (10.48%) eyes. Krukenberg spindle was seen in 445 (57.57%) eyes and iris transillumination defects in 33 (4.27%) eyes. About a third of the eyes, 241 (31.18%) eyes had an intraocular pressure >21 mm of Hg at presentation. 328 (42.43%) eyes were on more than one anti-glaucoma medication. YAG peripheral iridotomy was documented in 100 (12.94%) eyes. In the 46 (5.95%) eyes that required a glaucoma related surgical intervention, combined surgery was performed in 30 (3.88%) eyes and trabeculectomy in 16 (2.07%) eyes. Conclusion: PDS is more common in males presenting during the fourth decade of life and is predominantly bilateral. A third of the eyes have raised intraocular pressure and a tenth of them are affected with blindness at presentation.
Control variables of serum ferritin concentrations in hospitalized newborn infants: an observational study
Authors: Hisano Tadashi , Okada Junichiro , Tsuda Kennosuke , Iwata Sachiko , Saitoh Shinji , Iwata Osuke 
Published: July 2022

Abstract
Background: Excess as well as deficiency of iron are deleterious to cellular and organ homeostasis. Serum ferritin levels have been used as a clinical marker of iron storage; however, their distribution and determinants in sick newborn infants remain unclear. This study aimed to investigate the reference range and independent variables of serum ferritin in hospitalized newborn infants. Methods: Newborn infants of 24 h of age who were hospitalized at a tertiary neonatal intensive care unit between April 2015 and March 2017 were retrospectively reviewed for their clinical variables and serum ferritin levels. Results: A total of 368 infants (36.2 ± 2.8 weeks gestation and 2319 ± 623 g at birth) were included in this study. The median serum ferritin level was 149 µg/L (inter-quartile range: 81–236). The multivariable model used to explain serum ferritin values comprised hemoglobin, lactate dehydrogenase, blood pH, and maternal hypertensive disorders in pregnancy (all p<0.001, adjusted for sex and birth weight). Conclusion: Serum ferritin value in hospitalized newborn infants was convertible with the range measured using umbilical cord blood. Our novel findings indicated the association between blood pH, lactate dehydrogenase, and ferritin levels, suggesting the influence of antenatal hypoxia-ischemia and stress to serum ferritin levels.