bluuebunny/crossref_metadata_2025 huggingface dataset:
Application of Artificial Intelligence in Academic Mental Health and Employment Evaluation
Authors: Zhang Xi
Published: October 2022

The enrollment expansion of colleges and universities and the acceleration of today's social process bring fierce competition to students. Colleges and universities should attach great importance to the mental health and employment anxiety of graduate students. In order to better explore the relationship between them, this paper uses artificial intelligence (AI) to evaluate students' psychology. The results show that: (1) When the crossover probability P value is less than 1, the psychology tends to be stable, and the emotion simulation conforms to the law of emotion change. (2) The accuracy of this model is higher than 82%, and the weighted fuzzy reasoning method can effectively analyze psychological symptoms. (3) After iteration, CNN has different recognition degrees for six emotions. (4) Finally, according to the emotional analysis given by the model, the source of students' psychological problems is discussed, and it is found that these students have different degrees of bad academic behavior; while they are anxious about employment, the employment rate is not satisfactory.
Industrial Establishments of Saudi Arabia
Authors: Ali Anis
Published: October 2022

The growth and development of a developing economy depend on the sustainable growth and development of the industrial sector of the nation. The study is based on the secondary data and chain-based index numbers calculated to get the growth trend of the industrial establishments that explains the extreme polar developing industrial establishments defined as economic activity. The analysis and interpretations explain that the establishments highest in number produce household or personal accessories while the minerals, petroleum, and pharmaceutical preparation establishments lowest in Saudi Arabia. The fastest-growing establishments related to mining and petroleum or wearing apparel and wooden products while establishments related tobacco products, furniture, paper products. Possibly, low demand for the products, unavailability of finance and skilled human resources, complex labor laws, regulatory systems, and insufficient technical and financial assistance affects the lowest number and slowest growing industrial establishments in Saudi Arabia.
The Impact of Cross-Culture Risk on International Business Negotiations
Authors: Al-Sharaa Mohammed Hashim Abdulkareem , Hishan Sanil S.
Published: October 2022

International business negotiations face differences between different cultures. Cultural dimensions can affect the negotiation processes that take place between representatives of different cultures in the negotiations. As a result of the cultural difference between the negotiating parties, there may be many misunderstandings. This paper discusses the impact of cultural dimensions on the conduct of international business negotiation processes. Twenty previous studies on international business negotiation and cultural differences were reviewed and analyzed. The Prisma flow diagram chart was used in this study in order to select articles that are relevant and useful for this study. The findings of this study show that preparation for negotiation is one of the most effective methods for the success of international business negotiations. We advise future researchers to focus on the positive aspect of the impact of cultural differences on international business
Identifying Factors Influencing E-WOM on Social Networking Sites
Authors: Agrawal Noopur , Tripathi Aditya P. , Jagwani Priti
Published: October 2022

The aim of present research is to examine the influence of identified factors on efficacy of electronic word-of-mouth (e-WOM) for selected e-retailers on social media platform Twitter, applying data mining technique through python software programming. Taking the use of different programming and context as a research gap, the relationship among three important factors viz; network related, text related and time related factors and their influence on e-WOM has been examined on randomly tracked 2582 tweets about two of the reputed Indian e-retailers, Snapdeal and Flipkart. This study may be of immense help to e-retailers in identifying their reference customers (influential customers) on social media platform which in turn may be channelized for the purpose of viral marketing and other communication campaigns.
A Novel CNN, Bidirectional Long-Short Term Memory, and Gated Recurrent Unit-Based Hybrid Approach for Human Activity Recognition
Authors: Thakur Narina , Singh Sunil K. , Gupta Akash , Jain Kunal , Jain Rachna , Peraković Dragan , Nedjah Nadia , Rafsanjani Marjan Kuchaki
Published: October 2022

Human activity recognition (HAR) is a crucial and challenging classification task for a range of applications from surveillance to assistance. Existing sensor-based HAR systems have limited training data availability and lack fast and accurate methods for robust and rapid activity recognition. In this paper, a novel hybrid HAR technique based on CNN, bi-directional long short-term memory, and gated recurrent units is proposed that can accurately and quickly recognize new human activities with a limited training set and high accuracy. The experiment was conducted on UCI Machine Learning Repository's MHEALTH dataset to analyze the effectiveness of the proposed method. The confusion matrix and accuracy score are utilized to gauge the performance of the presented model. Experiments indicate that the proposed hybrid approach for human activity recognition integrating CNN, bi-directional LSTM, and gated recurrent outperforms computing complexity and efficiency. The overall findings demonstrate that the proposed hybrid model performs exceptionally well, with enhanced accuracy of 94.68%.
Assessment of Shear Bond Strength of Thermal Spray Coatings by Applying Prismatic Samples
Authors: Zaytzev A.N. , Lukianova A.N. , Demoretsky D.A.
Published: October 2022

The purpose of this study was the research for a non-standardized method of measuring the shear bond strength at constant compression force and compare with the shear testing methods on cylindrical and prismatic samples, like DIN 50161:1977-10, DIN EN15340-2007. The conducted comparative analysis showed a significant shortcoming of the well-known methods for assessing the shear bond strength on samples for industrial application. The main one is an inability to measure the “actual/real” adhesion shear strength of thermal spray coatings for industrial parts. The shear bond strength of plasma-sprayed coating MgAl2O4 with thickness 0.30-has been investigated by applying the prismatic samples (linear dimensions of shear area 1.5-), using Nanovea scratch tester at compression forces ranging from 1 to 70 N. Shear force-displacement curves get essential information about adhesion/cohesion, delamination and cracking properties of thermal spray coating. An increase of shear forces is primarily associated with a rise in friction forces at the coating delamination boundary. Applying for parts of the ITER blanket modules, this research has demonstrated the importance of practical application of the shear testing results at compressive loads for ensuring product life.
Mechanical Behavior of Functionally Graded ABS Gyroid Lattice Structures Using Fused Deposition Modeling
Authors: Aranez Shaun Angelo C. , Basilia Blessie A. , Custodio Cyron L. , Margarito Marianito T.
Published: October 2022

Functionally graded additive manufacturing (FGAM) is a fused deposition modeling (FDM) technique that steadily varies the ratio of the material distribution in a single specimen depending on a specific function. The gyroid design is used in a variety of applications because of its high porosity, surface area, and its good mechanical properties. This work investigated the relationship between the geometric design and the mechanical performance of the acrylonitrile butadiene styrene (ABS) gyroid structure using FDM. Tensile, compression, and flexural tests were performed to determine the mechanical behavior of the functionally graded lattice structures with controlled infill densities per layer. Results showed that the performance of the ABS gyroids is dominated by their geometrical design. The tensile strength of the single-layered structure increased linearly with respect to the increase in infill density from 15% to 35% however, compression and flexural results from 25% to 35% showed an exponential increase of 175.52% and 112.14%, respectively. Increasing the outer layer density from 15% to 35% for the three-layered structures resulted in an increase in tensile strength up to 62%. It was observed that the three-layered structures having the same amount of infill densities provided similar mechanical behavior in all the tests conducted. Fracture failures occurred in the adjoining layers wherein the density of the interconnected structures is a function of its material distribution.
Influence of Nitrate Species A(NO3)2 on Physico-Mechanical Properties of the Aluminosilicate Adhesives for Wooden Structure
Authors: Guzii Sergii G. , Romanyuk Volodymyr , Yermakova Olena , Kostyrkin Oleg , Petrova Olena , Ishchuk Volodymyr
Published: October 2022

The article presents the results of studies of the positive effect of compounds of the type A(NO3)2, as modifiers of the aluminosilicate adhesive of the composition Na2O∙Al2O∙6SiO2∙20H2O, on increasing the strength of adhesive joints of wood of various species. The grade strength increases 1.39 times compared to the strength of the adhesive that does not contain these compounds. According to the degree of influence on the shear strength along the fibers, the additives can be ranked in the series Ba (NO3)2 > Ca (NO3)2 > Mg (NO3)2 > 95%Ca (NO3)2+5%NH4NO3. It is noted that for gluing samples from a pine substrate, it is advisable to add magnesium and barium nitrates to the aluminosilicate glue in an amount of 1% (by weight); beech wood - calcium and barium nitrates in the amount of 1 and 0.5% (by weight); oak wood - calcium nitrates in an amount of 1% (by mass), a mixture of nitrates in an amount of 0.5% (by mass) and barium nitrate in an amount of 0.5 and 1.5% (by mass). According to the influence on the strength of adhesive joints, the substrates can be ranked in the order beech > oak > pine. Further studies will present the results of the effect of alkaline earth metal nitrates on the deformation properties of adhesive joints and on rheokinetic and colloid-chemical properties.
Ezrin Promotes Antigen Receptor Diversity during B Cell Development by Supporting Ig H Chain Variable Gene Recombination
Authors: Aysola Varun , Abd Christina , Kuo Alexander H , Gupta Neetu
Published: October 2022

Genome-level rearrangements of Ig genes during B cell development are critical for generation of a diverse repertoire of BCRs that bind to a multitude of foreign Ags and some self Ags. Bone marrow B cell development involves a variety of cell–cell interactions, cell migration, and receptor signaling that likely benefit from the activity of membrane-cytoskeletal reorganizing proteins. However, the specific contribution of such proteins toward BCR repertoire diversification is poorly understood. Ezrin is a membrane-cytoskeletal linker protein that regulates mature B cell activation through spatial organization of the BCR. We employed next-generation sequencing to investigate whether Ezrin plays a role in IgH rearrangements and generation of BCR diversity in developing bone marrow B cells. BCR repertoire development occurred stochastically in B cell progenitors from both control and B cell conditional Ezrin-deficient mice. However, the loss of Ezrin resulted in fewer unique CDRs (CDR3s) in the BCRs and reduced Shannon entropy. Ezrin-deficient pre-B cells revealed similar utilization of joining (J) genes but significantly fewer variable (V) genes, thereby decreasing V-J combinatorial diversity. V-J junctional diversity, measured by CDR3 length and nucleotide additions and deletions, was not altered in Ezrin-deficient pre-B cells. Mechanistically, Ezrin-deficient cells showed a marked decrease in RAG1 gene expression, indicating a less efficient DNA recombination machinery. Overall, our results demonstrate that Ezrin shapes the BCR repertoire through combinatorial diversification.
Individual Blade Control for Component Load Alleviation using a Model Predictive Control Formulation
Authors:   Georgia Institute of Technology, Mballo Chams , Prasad J.V.R
Published: October 2022

This paper considers synthesis of a load alleviation scheme based on active rotor control for helicopter component life extension. The proposed load alleviation scheme is formulated in a model predictive framework. Using a reduced order coupled body/rotor/inflow dynamic model onboard the vehicle, real-time estimates of component loads arising due to vehicle maneuvers are generated. The load estimates in turn are used in an optimal control formulation to obtain the higher harmonic individual blade control (IBC) inputs needed to reduce selected harmonics of component loads. The performance of the proposed component load alleviation using IBC scheme is implemented in a comprehensive nonlinear model of a generic helicopter. Nonlinear model simulations show that significant individual harmonic load reduction can be obtained with very little impact on the maneuver performance and minimal impact on the uncontrolled harmonics of component loads.
Performance Advantages and Resonance Analysis of a Variable Speed Rotor Using Geometrically Exact Beam Formulations
Authors:   Georgia Institute of Technology, Chandrasekaran Ruthvik , Hodges Dewey
Published: October 2022

The efficiency and operating envelope of a rotorcraft is constrained by the speed of the rotor. Most helicopters operate with a constant rotor speed. Varying the speed of the rotor based on the operating condition could significantly improve the rotor’s performance. In this study, a hingeless rotor model with elastic blades is built in Dymore to study various aspects of Variable Speed Rotor (VSR) technology. The rotor blades are modeled as one-dimensional beams using state of the art beam theory known as the geometrically exact beam theory (GEBT). An unsteady aerodynamics model with dynamic stall and finite-state dynamic inflow is used to obtain the aerodynamic loads acting on the rotor. The power savings that can be achieved at various advance ratios by varying the speed of the rotor is evaluated. Maximum power savings of 41:47% was achieved at mN = 0:2. However, changing the rotor speed leads to vibration issues when a rotor passes through a resonance point. A methodology to identify the important resonance points for a given flight condition and rotor speed transition is also provided. The forces acting on the rotor blade during resonance crossings at different advance ratios is evaluated.
An Examination of Aerodynamic and Structural Loads for a Rotor Blade Optimized with Multi-Objective Genetic Algorithm
Authors:   US Army DEVCOM AvMC, Lim Joon ,   US Army ERDC, Allen Luke , Dettwiller Ian , Haehnel Robert
Published: October 2022

A rotor blade design optimization framework has been developed by integrating the Dakota, C81Gen, ParFoil, and RCAS software packages using Galaxy Simulation Builder (GSB). It provides a fully automated, GUI-based design tool for rotor blade optimization. Global design optimization is successfully carried out by optimizing airfoils on the UH-60A rotor blade using Multi Objective Genetic Algorithm (MOGA) in Dakota. The design optimization objective is to minimize rotor power at µ = 0.3 and in hover. A total of 12 design parameters are used and 50,000 function evaluations are made with MOGA to optimize three airfoil segments ranging from r/R=0.736 to the blade tip. The resulting optimal design shows favorable rotor power reductions over a full range of flight speeds including hover. It shows a 9.2% reduction at µ = 0.4, a 6.7% reduction at µ = 0.35 and a 0.6% reduction in hover. The significant rotor power reductions in high speed cruise result mainly from a drag reduction on the advancing side near the blade tip where it is near the transonic region. This outcome is possible with morphing airfoils by shifting the camber crest towards the leading edge and the thickness crest towards the mid chord as well as reducing the thickness.
AW609 Civil Tiltrotor Drive Train Torsional Stability Analysis and Certification Test Campaign
Authors:   Leonardo Helicopters, Haidar Ahmad , Belluomini Luca , Trezzini Alberto
Published: October 2022

The certification of the Leonardo Helicopters AW609 tiltrotor includes certifying, for the first time, the tiltrotor drive train architecture in a civilian aircraft. This paper presents a Simulink-based linear analysis that predicts torsional stability across the flight envelope as well as sensitivity to important design parameters. The paper also describes the ground and flight-test methodology carried out in the certification test campaign. The post-processing of experimental data is summarized, and results from the certification test campaign are presented as model correlation.
How Big is a Lock Number?
Authors:   Washington University St. Louis, Seidel Cory , Peters David
Published: October 2022

The traditional Lock number for lifting rotors is recast in terms of a different set of parameters. This new formulation, while not changing the basic definition of the Lock number, gives additional physical insight into the design variables that influence this number. The new formulation enables one to better understand why Lock numbers fall into the range they do. The fundamental basis of the Lock number is studied for 33 rotors, ranging in size from the main rotor of the CH-53E (with 7 blades and a diameter of 79 ft) down to the tail rotor of the Robinson R22 Beta (with 2 blades and a diameter of 3.5 ft).
Educators' Perceptions of Characteristics That Define Athletic Training Student Competence: A Report From the Association for Athletic Training Education Research Network
Authors: Welch Bacon Cailee E. , Cavallario Julie M. , Pike Lacy Alicia M. , Walker Stacy E. , Eberman Lindsey E.
Published: October 2022

Context

As health professions education continues to transition toward competency-based education, it is essential that educators have an in-depth understanding of student competence and how it is achieved. However, little is known concerning the perceptions of educators regarding student competence in athletic training.

Objective

To explore athletic training educators' perceptions of student competence.

Design

Cross-sectional.

Setting

Online survey with open-ended questions.

Patients or Other Participants

In total, 368 of 1577 athletic training educators accessed the survey (23.3% access rate); 327 were included in data analysis because they indicated they served as an athletic training educator at the time of data collection and completed at least 1 open-ended question. Respondents represented athletic training programs in 47 states, and their average age was 41.5 ± 9.4 years.

Main Outcome Measure(s)

We used a 10-item survey, including 5 demographic items and 5 open-ended questions to collect data. Descriptive statistics were used to characterize the demographic variables, while responses to the open-ended questions were coded by a 3-person team following the consensual qualitative research approach. To enhance trustworthiness, an external auditor confirmed the accuracy of the findings following the structured, 4-phase data analysis progression.

Results

Our findings revealed that educators described the meaning of student competence in a variety of ways that ranged between lower-level cognitive learning, midlevel cognitive learning, and high-level cognitive learning. Educators further characterized student competence as being time based or student or skill based or both. Finally, educators perceived that student competence is achieved when a student is ready to practice autonomously yet shared conflicting views on the similarities or differences between student competence and student readiness.

Conclusions

The views and perceptions of student competence varied among athletic training educators. To progress toward competency-based education, our findings highlight the need to establish consensus regarding student competence among educators in athletic training education.
Role of artificial intelligence in the diagnosis of COVID-19
Authors: Mohammed PK Rajeesh , Gulati Saakshi , Gupta Shivangi
Published: October 2022

The ongoing COVID-19 pandemic due to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection has resulted in a significant public health care system crisis. This disease has resulted in devastating damage to human lives and significant disruption in economies. Use of “machine-learning” algorithms as tools of artificial intelligence may help identify a suspected or infected individual with an estimation of chances of survival. These algorithms make use of recorded observational data including medical histories, patient demographics as well as any related data on COVID-19.
Sentinel Lymph Node Biopsy using Methylene Blue Alone in an Era of Significance of the Depth of Invasion in Oral Cancers
Authors: Shanmugam Subbiah , Susikar Sujay , Hussain Syed Afroze , Bharanidharan T. , Reddy Kishore Kumar
Published: October 2022

Aim:

To evaluate the accuracy of methylene blue dye alone in identifying sentinel nodes in oral cancers with clinically N0 neck and the significance of the depth of invasion (DOI) in combination with sentinel lymph node (SLN) biopsy in predicting nodal metastasis.

Methods:

This is a prospective study done over 24 months accruing 67 patients with cN0 neck admitted to our center for oncology. SLN harvesting was done adhering to the standard procedure using methylene blue dye for all early-stage oral cavity cancers with N0 neck clinically. Data were collected, grouped, and analyzed for deducing DOI, sensitivity, specificity, positive predictive value, and negative predictive value of the procedure and compared with other studies in the literature.

Results:

Out of 67 patients, males (76.1%) outnumbered female (23.9%) patients. The mean age of the patients was 51.5 years. Tongue (61.2%) was the most common site. Sentinel nodes were identified in 89.5% of patients. The mean number of Sentinel nodes identified was 1.9. The mean DOI was 7.3 mm. SLNs were most commonly identified in Level I (78.3%). Sensitivity, specificity, positive predictive value, and negative predictive value and accuracy deduced in this study were 75%, 97.9%, 90%, 94%, and 93.3%, respectively.

Conclusion:

Methylene blue dye alone can be successfully used for SLN identification in clinically node-negative oral cavity cancers, particularly with less DOI. DOI alone for predicting nodal involvement can be used with caution. Combination of DOI and sentinel node biopsy may help in better identification of nodal involvement.
Comparison of Acoustic Reflex Thresholds Across Different Stimuli
Authors: Devi Neelamegarajan , Murugesan Ajithkumar
Published: October 2022

Background:

Acoustic reflex (AR) is the contraction in the middle ear muscles in response to severe acoustic stimulation. Thresholds of AR can be obtained using different stimuli and different stimulus parameters. However, the reflexes are often difficult to elicit in hearing-related disorders such as hyperacusis, recruitment, young infants, and children with autism. Comparisons of AR thresholds (ARTs) across different stimuli, such as PT, broadband noise, and clicks at different rates, can provide information on the stimuli optimally used for difficult-to-test populations.

Objective:

The study aimed to estimate and correlate the ARTs elicited by pure-tones (PT), the low-frequency band (low pass [LP]) and high-frequency band (high pass [HP]), wide-band noise (WB), and clicks at different rates.

Materials and Methods:

ARTs using different stimuli like PT of frequencies 500, 1 k, 2 k, 4 k Hz, the low-frequency band (LP) (i.e., noise in the frequency range of 125–1600 Hz), the high-frequency band (HP) (i.e., noise in the frequency range of 1600–4000 Hz), wideband noise (WB) (125–4 kHz), and clicks at different click repetition rates as 50/s, 100/s, 150/s, 200/s, 250/s, and 300 clicks/sec was measured on 50 normal-hearing individuals. The ARTs were documented for both ipsilateral and contralateral recording for all test stimuli.

Results:

The mean ART obtained for 500 Hz PT was between 85 and 95 dB HL, for WB, it was between 80 and 85 dB, and for LP and HP, it was between 75 and 80 dB HL. For click stimulus, a better threshold of 70 dB HL was obtained at 300/s. The mean ART elicited by PT and WB noise was higher than click stimuli. The mean comparison of the ART obtained between PT and WB revealed better thresholds for WB noise. Between WB noise and clicks, better ART was observed for click stimuli. The clicks elicited ART were better than noise stimuli followed by PT. Ipsilateral stimulation yielded better responses than contralateral stimulation for all stimuli.

Discussion:

The mean ART for click stimulus was better because it stimulated a wider frequency range in cochlea than PT, LP, and HP. Even though WB has a wider frequency range than clicks, the mean ART for click stimulus was much better because of a factor called temporal integration, i.e., stimulation at a higher rate (300/s).

Conclusions:

The click stimuli at a higher rate can be used effectively to measure ART's for individuals with lower comfortable levels as it can elicit reflex at lower thresholds.
Kite String Injury to the Head-and-Neck Region
Authors: Swain Santosh Kumar
Published: October 2022

Flying kite is a popular sport among children although many adults also fly kites in festive seasons. People frequently fly kites to celebrate the arrival of spring. These kite festivals feature a sport called kite fighting, in which competitors attempt to sever the string of a rival kite with their own kite. The majority of injuries are sustained at the time of flying kites due to falls, cuts, neck injuries, or even death. Injury to the head-and neck region by kite string is often fatal. These injuries can range from a superficial laceration to profound muscle, tendon, artery, or nerve injury. Flying kite is associated with simple injury to grievous trauma. The severity of the injury is determined by the abrasive materials used on the kite's string to improve its cutting capabilities. Injuries caused by flying kites are usually avoidable. Because the neck is frequently exposed while riding a motorcycle, this is likely the source of the high number of injuries in this area. Injuries caused by kite string can be avoided. The preventive methods include choosing a safe site and improving knowledge of the kite string's potential threats. There are not many research articles concerning kite string injury in head-and-neck area. This review article seeks to provide a complete overview of head-and-neck kite string injuries.
Gastric Remnant Shape Following Laparoscopic Sleeve Gastrectomy Correlates with Weight Loss
Authors: Jobson Dale , Freckelton Julia , Seale Melanie , Chong Lynn , Winter Nicole N. , Read Matthew , Ward Salena , Hii Michael W.
Published: October 2022

Background:

Laparoscopic sleeve gastrectomy (LSG) is a safe and effective bariatric surgical procedure. Sleeve configuration is believed to be an important outcome of good operative technique, yet the relationship of sleeve shape to clinical outcomes including weight loss and postoperative symptoms is not clearly defined. This study aims to identify whether gastric remnant anatomical shape is associated with short-term postoperative weight loss or symptoms of reflux, regurgitation, or dysphagia.

Methods:

207 LSG patients were identified from a prospective, multicentre unit database who had surgery between June 2015 and June 2019. Routine postoperative upper gastrointestinal gastrograffin contrast studies were performed between postoperative days one to five and analyzed using a standardized protocol. Gastric remnant shape was classified as either tubular, proximal pouch or distal pouch consistent with previous studies. ANOVA Kruskal − Wallis and Mann − Whitney U-tests were performed to determine the effect of gastric remnant anatomy on weight loss. Descriptive statistics examined the symptoms of reflux, regurgitation, and dysphagia.

Results:

Gastric remnant anatomy was classified as tubular in 159/207 (78%), proximal pouch in 15/207 (7%), and distal pouch in 33/207 (16%). Patients with a tubular shape had a significantly greater reduction in median body mass index at 12 months postoperatively compared to those with a proximal pouch (11.3 kg/m2 vs. 10.2 kg/m2, P = 0.01). There was no relationship identified between gastric remnant shape and postoperative reflux, regurgitation, or dysphagia.

Conclusion:

A tubular-shaped gastric remnant is associated with increased weight loss. This suggests that tubular shape should be considered the desired LSG shape for greatest weight loss.
Early Weight Loss
Authors: Satheesh Sigin , Shetty Aashik , Nasta Amrit Manik , Goel Madhu , Goel Ramen
Published: October 2022

Background:

Bariatric surgery is the most effective weight loss intervention for patients with severe obesity. Several studies have shown wide variability in weight loss response between patients. The aim of the study is to identify comparative poor responders based on weight loss in the early postoperative period.

Methods:

A retrospective analysis of 125 patients who underwent primary bariatric surgery by a single surgeon and completed 1 year of follow-up was performed. Patients were divided into two groups based on % Total Weight loss (%TWL) at 1 month after surgery: Group 1-who lost <10% TWL and Group 2-who lost >10% TWL. The comparison of factors in both groups at different time points was executed using paired t-tests or analysis of variance. The relationships between Group 1 and Group 2 after 1 year follow-up period were assessed through linear regression analyses.

Results:

Seventy (56%) patients lost <10% TWL and 55 (44%) patients lost more than 10% TWL in 1 month after surgery. Mean weight loss at 1 month and 1 year after surgery was 9 ± 5.5 kg and 37 ± 13.3 kg in Group 1 compared to 16 ± 5.2 and 46 ± 16.4 kg in Group 2, respectively. Patients with >10%TWL at 1 month had significantly greater %TWL at 1 year (P = 0.001). Linear regression analysis showed a positive correlation between patients who lost >10%TWL 1 month after surgery and weight loss at 1 year.

Conclusion:

Postoperative percentage TWL of <10% at 1 month can be used as an early determinant of comparatively poor weight loss at 1 year. Early initiation of aggressive and multimodal treatment strategies is likely to improve overall weight loss outcomes after surgery.
Measuring control of disease in Chronic Rhinosinusitis; assessing the correlation between SinoNasal Outcome Test-22 and Visual Analogue Scale item scores
Authors: Dietz de Loos D.A.E. , Cornet M.E. , Hopkins C. , Fokkens W.J. , Reitsma S.
Published: October 2022

Background: In chronic rhinosinusitis (CRS), aim of treatment is control of disease. EPOS2020 suggests the use of visual analogue scale (VAS) measurements on several symptoms. We aim to determine if individual VAS items can be replaced by widely used SinoNasal Outcome Test-22 (SNOT-22) items when determining control of disease, to avoid using double measurements and to stimulate its use in clinical practice. Methods: Analyses were made on correlations between individual SNOT-22 scores and symptom-specific questions from consecutive patients with CRS visiting our tertiary referral rhinologic clinic for the first time. Results: 157 CRS patients were included. Correlations of individual items were strong (r greater than 0.8). Best parity in sensitivity, specificity, positive predicting value, negative predicting value, odds ratio and Receiver Operating Characteristic curves were found in individual item score of VAS greater than 5 and SNOT item-score ≥3. This cut off is valid for measuring control of disease, combining several nasal, facial pain and sleep symptoms (controlled, partially controlled and uncontrolled). Conclusion: There is strong correlation between individual items measured as SNOT or VAS. For the definition of CRS disease control, as proposed in EPOS2020, the use of symptoms specific SNOT ≥3 is predictive of VAS greater than 5.
“The Most Crushing Thing”: Understanding Resident Assessment Burden in a Competency-Based Curriculum
Authors: Ott Mary C. , Pack Rachael , Cristancho Sayra , Chin Melissa , Van Koughnett Julie Ann , Ott Michael
Published: October 2022

Background

Competency-based medical education (CBME) was expected to increase the workload of assessment for graduate training programs to support the development of competence. Learning conditions were anticipated to improve through the provision of tailored learning experiences and more frequent, low-stakes assessments. Canada has adopted an approach to CBME called Competence by Design (CBD). However, in the process of implementation, learner anxiety and assessment burden have increased unexpectedly. To mitigate this unintended consequence, we need a stronger understanding of how resident assessment burdens emerge and function.

Objective

This study investigates contextual factors leading to assessment burden on residents within the framework of CBD.

Methods

Residents were interviewed about their experiences of assessment using constructivist grounded theory. Participants (n=21) were a purposive sample from operative and perioperative training programs, recruited from 6 Canadian medical schools between 2019 and 2020. Self-determination theory was used as a sensitizing concept to categorize findings on types of assessment burden.

Results

Nine assessment burdens were identified and organized by threats to psychological needs for autonomy, relatedness, and competence. Burdens included: missed opportunities for self-regulated learning, lack of situational control, comparative assessment, lack of trust, constraints on time and resources, disconnects between teachers and learners, lack of clarity, unrealistic expectations, and limitations of assessment forms for providing meaningful feedback.

Conclusions

This study contributes a contextual understanding of how assessment burdens emerged as unmet psychological needs for autonomy, relatedness, and competence, with unintended consequences for learner well-being and intrinsic motivation.
MÉTODO SIMPLIFICADO DE DETERMINAÇÃO DE ÍNDICE DE ÁREA FOLIAR PARA SIMULAÇÃO TÉRMICA DE HORTAS URBANAS EM COBERTURAS PLANAS
Authors: Cunha Eduardo Grala da , Ritter Viviane , Peil Roberta , Hohn Daniela , Correa Celina Maria Britto , Maieves Helayne , Estima Mariana , Sena Vitória , Schulz Julia
Published: October 2022

São conhecidas as vantagens ambientais das coberturas verdes sobre as edificações, dentre elas, o efeito positivo sobre a temperatura dos espaços internos. As hortas urbanas sobre as coberturas planas podem ser ainda mais interessantes, na medida em que possibilitam o cultivo de alimentos saudáveis junto à habitação. Este artigo tem como objetivo geral apresentar métodos para a definição do Índice de Área Foliar (IAF) para espécies vegetais de hortas urbanas em coberturas planas, observando o ciclo de crescimento da vegetação. O IAF é extremamente relevante na simulação térmica das coberturas verdes. A pesquisa foi desenvolvida em três etapas. Na primeira foi definida uma edificação residencial para receber a horta urbana. A edificação foi modelada e configurada no software Energy Plus versão 8.9. Na segunda etapa do método foram definidos três cenários quanto ao IAF considerando o ciclo de crescimento da espécie vegetal alface. Na terceira etapa foram rodadas as simulações termo energéticas e os resultados analisados. Observou-se que entre o cenário que considera a média do IAF constante num ano e o cenário que observa o ciclo IAF de 30 em 30 dias houve uma diminuição de até 2,4% na Intensidade de uso de energia.
RESÍDUO DE MINÉRIO DE MANGANÊS DA REGIÃO AMAZÔNICA E O SEU POTENCIAL USO COMO MATERIAL SUPLEMENTAR AO CIMENTO PORTLAND
Authors: Gomes-pimentel Maurilio , Gomes Cassia F. F. , Silva Micael R. C. , Viveiros Danielle S. , Picanço Marcelo S.
Published: October 2022

O manganês está entre os vinte elementos mais abundantes na crosta terrestre, é considerado essencial na fabricação do ferro e do aço, desoxidantes e na fabricação de ligas metálicas. Entretanto, durante a obtenção do manganês é gerado uma grande parcela de resíduo que vem sendo depositada em barragens. Aqui, esse resíduo foi avaliado como material fíler no cimento Portland. Os resultados mostraram que a substituição do cimento pelo resíduo aumenta a resistência à compressão e reduz os vazios e a absorção de água das amostras. Essas descobertas têm implicações importantes para substancial aplicação do resíduo como material suplementar ao cimento.
HORTAS COMUNITÁRIAS NOS VAZIOS URBANOS COMO ESTRATÉGIA DE REQUALIFICAÇÃO DE CENTROS URBANOS SUSTENTÁVEIS E SAUDÁVEIS
Authors: Lima Márcia , Nerbas Patrícia , Michels Guilherme
Published: October 2022

A requalificação de centros urbanos consolidados vem sendo apontada como uma medida para o desenvolvimento urbano sustentável, uma vez que impõe o desafio de refazer a cidade existente, reinventando-a, de modo inteligente e inclusivo. Neste sentido, este artigo destaca a importância da qualidade dos espaços públicos abertos para o sucesso dos projetos de requalificação dos centros urbanos, bem como a necessidade da busca de alternativas para a carência desses espaços. Assim, propõe uma discussão sobre a utilização dos vazios urbanos e dos miolos de quarteirão com áreas verdes e hortas urbanas comunitárias, considerando todos os seus possíveis benefícios ambientais, sociais e econômicos, como uma importante estratégia de requalificação de centros urbanos. As hortas urbanas tem sido apontadas como importantes espaços multiuso, não só para produzir alimentos, mas também para disponibilizar espaços de lazer, essenciais para cidades que busquem a sustentabilidade e responsividade às necessidades dos habitantes locais. Ressalta-se que esses espaços de cultivo na cidade podem trazer oportunidade de geração de renda, organização comunitária e convivência entre moradores. Concluindo, este artigo pretende fornecer subsídios para projetos de requalificação de centros urbanos, na busca da produção de cidades mais sustentáveis, saudáveis e, sobretudo, inclusivas.
DESTINOS POTENCIAIS DA CAMINHADA: UM ESTUDO EMPÍRICO
Authors: Pereira Luís Gustavo Rocha , Casarim Mariana Gimenez , Leão Ana Luiza Favarão , Faraco José Luiz , Kanashiro Milena
Published: October 2022

O deslocamento a pé é um modo acessível e sustentável, que potencializa melhores condições de qualidade do ar e proporciona benefícios à saúde da população. Evidências consistentes sugerem que a caminhada utilitária está vinculada à disponibilidade e proximidade de destinos, cuja distinção é fundamental. A caminhabilidade foi pouco investigada em países em desenvolvimento e cidades de pequeno porte, sobretudo tendo os destinos como foco. O objetivo desta pesquisa é aplicar uma categorização de destinos relacionada a caminhada na cidade de Rolândia-PR. Foram adicionadas informações ao banco de dados da pesquisa Origem-Destino e elaborada a categorização, a partir dos pontos de destino georreferenciados e relacionada à idade dos respondentes. Foi reportado um grande número de viagens com motivo de “Educação”, principalmente por crianças e seus acompanhantes; idosos e pessoas com baixa escolaridade tiveram alto índice de viagens em “Compras”, “Saúde” e principalmente em “Recreação”. A linha férrea e as rodovias foram identificados como importantes elementos estruturantes na espacialização dos destinos.
DISTRIBUIÇÃO SOCIOESPACIAL DOS ESPAÇOS LIVRES PARA PRÁTICAS SOCIAIS NO CONTEXTO URBANO
Authors: Stein Eduarda Marchiori , Ramos Larissa Leticia Andara , Jesus Luciana Aparecida Netto , Conde Karla Moreira
Published: October 2022

Os espaços livres de uso público possuem função de destaque nas cidades pois contribuem para a vitalidade urbana, a melhoria do microclima, o enriquecimento sociocultural, o convívio e a troca de experiências. No entanto, o adensamento populacional e as mudanças no uso do solo resultam na carência de espaços públicos para práticas sociais. Nesse sentido, o artigo apresenta uma análise comparativa e reflexiva da distribuição socioespacial e da abrangência das praças do município de Vila Velha-ES, tendo como recorte as Regionais Grande Centro, Grande Ibes e Grande Aribiri. As análises visam verificar se tais espaços atendem de forma democrática ou priorizam parcelas específicas do território urbano. Trata-se de um estudo aplicado, de abordagem quanti-qualitativa, definido em três etapas metodológicas: Contextualização; Identificação e Mapeamento; e Análises comparativas. Os resultados evidenciam a distribuição não homogênea das praças nas Regionais. Enquanto bairros de renda superiores e baixa densidade populacional possuem até 4 praças, bairros com rendas inferiores e maiores densidades apresentam ausência de espaços públicos para práticas sociais. Espera-se com essa pesquisa influenciar futuras intervenções, de modo a qualificar o espaço urbano, em especial, de Vila Velha. (Iniciação Científica – meio)
COMPARATIVO NO USO DA SIMULAÇÃO COMPUTACIONAL COM MÉTODO PRESCRITIVO NO CÁLCULO DA CARGA TÉRMICA
Authors: Medeiros H. G. , Rodrigues G. M. , Queiróz G. , Santos L. A. O. , Souza R. V. G. , Veloso A. C. O.
Published: October 2022

O presente artigo surgiu da problemática de utilização da simulação computacional para o cálculo da carga térmica em edificações. A pesquisa visou comparar o desempenho do método simplificado da extinta norma ABNT NBR 5858:1983 com método de simulação proposto pela ABNT NBR 16401:2008 em projetos de ar condicionado. Usando como objeto de estudo o prédio da Faculdade de Farmácia da UFMG. Foi verificado pelo método simulação uma carga térmica 2% menor do que pelo método simplificado. Concluiu-se que a simulação computacional pode ajudar o projetista de ar condicionado e, também contribui para a economia de recursos energéticos no uso do condicionamento térmico de edificações. Porém a metodologia simplificada apresenta resultado confiável para sistemas simples que utilizam aparelhos unitários com objetivo de fornecer conforto térmico aos espaços.
ANÁLISE DE ILUMINAÇÃO NATURAL EM SALA DE AULA EM VITÓRIA-ES
Authors: Mapelli-basilio Yulli R. , Laranja Andréa
Published: October 2022

O conforto visual no ambiente interno é considerado bastante relevante por ser fator imprescindível no bem estar e aprendizagem em ambientes escolares. Desta forma esta pesquisa tem como objetivo analisar a disponibilidade de iluminação natural em sala de aula em Vitória-ES. Na metodologia foram feitas simulações com o software TropLux, para as tipologias de céus padrões da CIE: Céu 3 (encoberto), Céu 7 (parcialmente nublado) e Céu 12 (claro), orientação Nordeste. Foram feitas análises com relação aos percentuais das UDIs (Useful Daylight Illuminances) e uniformidade de acordo com a ABNT. Quanto às UDIs, as análises foram feitas para todos os dias do ano, de 7h às 17h. No que se refere à uniformidade esta foi analisada no dia 21 de cada mês (janeiro a dezembro) nos horários de 8h, 10h, 12h, 14h e 16h, conforme sugere a NBR 15215-4 (ABNT, 2005). Os resultados das simulações mostram que, para Céu 7 e Céu 12, 75% das horas simuladas caracterizam-se com iluminação natural satisfatória (500<E<2.000lx). No que se refere à uniformidade foi nos Céus 7 e 12 nos horários simulados de 10 e 12h que se observou os melhores resultados, quando a marquise existente consegue garantir o sombreamento e reduzir o ofuscamento.
ESTATÍSTICA E CONFORTO AMBIENTAL: LEVANTAMENTO DO USO EM ARTIGOS SOBRE ILUMINAÇÃO NATURAL NO ENCAC/ENTAC 2009-2019
Authors: Ribeiro Pedro Vitor Sousa , Ribeiro Angélica Dória , Rodrigues Juliana de Paula Valente , Carvalho Filho Gilson , Cabús Ricardo Carvalho
Published: October 2022

A utilização de ferramentas de estatística na análise de dados em estudos na área de conforto ambiental, ainda é algo pouco comum, mesmo tendo sido amplamente utilizada na elaboração de métodos experimentais e softwares. O artigo tem o objetivo de levantar a ocorrência da utilização de ferramentas de estatística em publicações nacionais na área de conforto luminoso, com ênfase na iluminação natural. Foram escolhidos os artigos de dois eventos da área de conforto ambiental, o ENCAC e o ENTAC, no período entre 2009 e 2019. Para cada artigo foi definido um índice denominado de potencial do uso de estatística, baseando-se nas variações de parâmetros de simulação ou de medição, para fins de comparação. Foram analisados um total de 233 artigos. Observa-se que há a crescente presença de pesquisas que se utilizam de simulação computacional, também de forma associada à medição. O uso da estatística ainda é baixo, perto dos 22%, enquanto que mais de 80% dos trabalhos possuem potencial de uso. Conclui-se que a utilização de tais ferramentas de análises de dados ainda é muito restrita, mas com grande potencial de uso.
FERRAMENTA SIMPLIFICADA PARA A ESTIMATIVA DO DESEMPENHO DA ILUMINAÇÃO NATURAL EM EDIFICAÇÕES RESIDENCIAIS
Authors: Pereira Fernando O. R. , Fonseca Raphaela W. , Giraldo Natália V. , Scalco Veridiana A. , Mariano Pedro O. P. , Queiroz Natália , Rosa Franciele F.
Published: October 2022

A luz natural é um recurso que traz inúmeros benefícios para a saúde e bem estar das pessoas. Portanto, garantir a suficiência da luz natural nos ambientes internos desde as fases iniciais de projeto é importante, sendo favorável o uso de métodos simplificados em detrimento de simulações complexas. O objetivo deste trabalho é apresentar uma ferramenta simplificada para a avaliação do desempenho de ambientes residenciais quanto à suficiência de iluminação natural, por meio de ábacos. O método foi estruturado em três etapas: i. proposta conceitual do ábaco; ii. a base de dados gerada por simulação computacional, utilizando o plugin DIVA para Grasshopper; iii. análise dos resultados e consolidação do ábaco. Como resultados foram apresentadas as análises do desempenho de iluminação natural de acordo com a base de dados, o ábaco consolidado e um estudo de caso. Conclui-se que o ábaco consiste em uma ferramenta de avaliação expedita aplicável a grande parte dos ambientes residenciais encontrado no estoque construído nacional. Como principal limitação, o ábaco deve ser individualizado para diferentes tipos de vidro e características locais.
BALANÇO ENERGÉTICO NULO EM HABITAÇÃO DE INTERESSE SOCIAL: ESTUDO DE CASO NO SUL DO BRASIL
Authors: Lima Marcos Vinícius de , Silva Thaísa Leal da , Ribeiro Lauro André
Published: October 2022

No Brasil, a crise energética ocorrida em 2001 abriu o caminho para a Política Nacional de Conservação e Uso Racional de Energia. Atualmente, a produção de eletricidade nos edifícios como forma de suprir a demanda própria já é realidade. Neste contexto, este artigo possui como objetivo investigar o consumo energético de uma habitação de interesse social consolidada no contexto climático do sul do Brasil (ZB2), bem como avaliar a viabilidade de produção de energia elétrica fotovoltaica para suprir a demanda energética da edificação, contribuindo para a disseminação de edificações com balanço energético nulo (NZEB). O objeto da pesquisa é uma edificação consolidada no conjunto habitacional Canaã, do programa Minha Casa, Minha Vida na cidade de Passo Fundo/RS. Como método estimou-se o consumo de energia através do método de simulação computacional recomendado pelo RTQ-R, o potencial de geração de energia renovável local através de geração fotovoltaica, e a análise econômica por meio das ferramentas VPL, TIR e Payback. O trabalho demonstra que é possível implantar habitações NZEBs do ponto de vista econômico para geração de energia em tipologia de interesse social no sul do Brasil.