bluuebunny/crossref_metadata_2025 huggingface dataset:
Two-hop cognitive DF relaying with wireless power transfer in time and power domains
Authors: Zheng Lina , Zhai Chao
Published: October 2021

In this paper, we consider a wireless powered cognitive relaying system with a secondary relay (SR) capable of harvesting wireless energy. Along with an access point (AP) continuously transmitting the primary data to a primary user (PU), a secondary source (SS) can transmit the secondary data to a secondary destination (SD) with the help of SR using the decode-and-forward (DF) protocol. SR can harvest energy from both SS and AP in both time and power domains using time-splitting and power-splitting techniques. The interference from primary data transmissions can help boost the amount of harvested energy at SR. The transmit power of SS is regulated by the interference threshold at PU and the allowable peak power. Despite the above two constraints, the transmit power of SR is further constrained by the amount of harvested energy. Once SR successfully decodes the data from SS, it will forward the data to SD using a constrained power. We analyze the approximate outage probabilities for both primary and secondary systems. Simulation results are provided to verify the effectiveness of our theoretical analysis and reveal the impacts of various parameters to the outage performance.
Fixed point theorems in modular G-metric spaces
Authors: Okeke Godwin Amechi , Francis Daniel , de la Sen Manuel , Abbas Mujahid
Published: October 2021

We prove the existence and uniqueness of fixed points of some generalized contractible operators defined on modularG-metric spaces and also prove the modularG-continuity of such operators. Furthermore, we prove that some generalized weakly compatible contractive operators in modularG-metric spaces have a unique fixed point. Our results extend, generalize, complement and include several known results as special cases.
Operational matrices based on the shifted fifth-kind Chebyshev polynomials for solving nonlinear variable order integro-differential equations
Authors: Jafari H. , Nemati S. , Ganji R. M.
Published: October 2021

In this research, we study a general class of variable order integro-differential equations (VO-IDEs). We propose a numerical scheme based on the shifted fifth-kind Chebyshev polynomials (SFKCPs). First, in this scheme, we expand the unknown function and its derivatives in terms of the SFKCPs. To carry out the proposed scheme, we calculate the operational matrices depending on the SFKCPs to find an approximate solution of the original problem. These matrices, together with the collocation points, are used to transform the original problem to form a system of linear or nonlinear algebraic equations. We discuss the convergence of the method and then give an estimation of the error. We end by solving numerical tests, which show the high accuracy of our results.
An Ethnographic study of unhealthy alcohol use in a Danish Emergency Department
Authors: Sivertsen Ditte Maria , Becker Ulrik , Andersen Ove , Kirk Jeanette Wassar
Published: October 2021

Background

Emergency Departments (EDs) are important arenas for the detection of unhealthy substance use. Screening, Brief Intervention, and Referral to Treatment (SBIRT) for unhealthy alcohol use has been used in some ED settings with funding support from external sources. However, widespread sustained implementation is uncommon, and research aimed at understanding culture as a determinant for implementation is lacking. This study aims to explore cultural practices concerning the handling of patients with unhealthy alcohol use admitted to an ED.

Methods

An ethnographic study was conducted in an ED in the Capital Region of Denmark. The data consists of participant observations of Health Care Professionals (HCPs) and semi-structured interviews with nurses. Data was collected from July 2018 to February 2020. A cultural analysis was performed by using Qualitative Content Analysis as an analytic tool.

Results

150 h of observation and 11 interviews were conducted. Three themes emerged from the analysis: (1) Setting the scene describes how subthemes “flow,” “risky environment,” and “physical spaces and artefacts” are a part of the contextual environment of an ED, and their implications for patients with unhealthy alcohol use, such as placement in certain rooms; (2) The encounter presents how patients’ and HCPs’ encounters unfold in everyday practice. Subtheme “Professional differences” showcases how nurses and doctors address patients’ alcohol habits differently, and how they do not necessarily act on the information provided, due to several factors. These factors are shown in remaining sub-themes “gut-feeling vs. clinical parameters,” “ethical reasoning,” and “from compliance to zero-tolerance”; and (3) Collective repertoires shows how language shapes the perception of patients with unhealthy alcohol use, which may cause stigma and stereotyping. Subthemes are “occupiers” and “alcoholic or party animal?”.

Conclusions

Unhealthy alcohol use in the ED is entangled in complex cultural networks. Patients with severe and easily recognizable unhealthy alcohol use—characterized by an alcohol diagnosis in the electronic medical record, intoxication, or unwanted behavior—shape the general approach and attitude to unhealthy alcohol use. Consequently, from a prevention perspective, this means that patients with less apparent unhealthy alcohol use tend to be overlooked or neglected, which calls for a systematic screening approach.
Intermediate field directions recorded in Pliocene basalts in Styria (Austria): evidence for cryptochron C2r.2r-1
Authors: Schnepp Elisabeth , Arneitz Patrick , Ganerød Morgan , Scholger Robert , Fritz Ingomar , Egli Ramon , Leonhardt Roman
Published: October 2021

Pliocene volcanic rocks from south-east Austria were paleomagnetically investigated. Samples were taken from 28 sites located on eight different volcanoes. Rock magnetic investigations revealed that magnetic carriers are Ti-rich or Ti-poor titanomagnetites with mainly pseudo-single-domain characteristics. Characteristic remanent magnetization directions were obtained from alternating field as well as from thermal demagnetization. Four localities give reversed directions agreeing with the expected direction from secular variation. Another four localities of the Klöch–Königsberg volcanic complex (3) and the Neuhaus volcano (1) have reversed directions with shallow inclinations and declinations of about 240° while the locality Steinberg yields a positive inclination of about 30° and 200° declination. These aberrant directions cannot be explained by local or regional tectonic movements. All virtual geomagnetic pole positions are located on the southern hemisphere. Four virtual geomagnetic poles lie close to the geographic pole, while all others are concentrated in a narrow longitude sector offshore South America (310°–355°) with low virtual geomagnetic pole latitudes ranging from − 15° to − 70°. The hypothesis that a transitional geomagnetic field configuration was recorded during the short volcanic activity of these five localities is supported by 9 paleointensity results and39Ar/40Ar dating. Virtual geomagnetic dipole moments range from 1.1 to 2.9·1022Am2for sites with low VGP latitudes below about 60° and from 3.0 to 9.3·1022Am2for sites with higher virtual geomagnetic pole latitudes. The new39Ar/40Ar ages of 2.51 ± 0.27 Ma for Klöch and 2.39 ± 0.03 Ma for Steinberg allow for the correlation of the Styrian transitional directions with cryptochron C2r.2r-1 of the geomagnetic polarity time scale.

Graphic abstract
Solar radiation effects on leaf nitrogen and phosphorus stoichiometry of Chinese fir across subtropical China
Authors: Tong Ran , Cao Yini , Zhu Zhihong , Lou Chenyang , Zhou Benzhi , Wu Tonggui
Published: October 2021

Background

Solar radiation (SR) plays critical roles in plant physiological processes and ecosystems functions. However, the exploration of SR influences on the biogeochemical cycles of forest ecosystems is still in a slow progress, and has important implications for the understanding of plant adaption strategy under future environmental changes. Herein, this research was aimed to explore the influences of SR on plant nutrient characteristics, and provided theoretical basis for introducing SR into the establishment of biochemical models of forest ecosystems in the future researches.

Methods

We measured leaf nitrogen (N) and phosphorus (P) stoichiometry in 19 Chinese fir plantations across subtropical China by a field investigation. The direct and indirect effects of SR, including global radiation (Global R), direct radiation (Direct R) and diffuse radiation (Diffuse R) on the leaf N and P stoichiometry were investigated.

Results

The linear regression analysis showed that leaf N concentration had no association with SR, while leaf P concentration and N:P ratio were negatively and positively related to SR, respectively. Partial least squares path model (PLS-PM) demonstrated that SR (e.g. Direct R and Diffuse R), as a latent variable, exhibited direct correlations with leaf N and P stoichiometry as well as the indirect correlation mediated by soil P content. The direct associations (path coefficient = − 0.518) were markedly greater than indirect associations (path coefficient = − 0.087). The covariance-based structural equation modeling (CB-SEM) indicated that SR had direct effects on leaf P concentration (path coefficient = − 0.481), and weak effects on leaf N concentration. The high SR level elevated two temperature indexes (mean annual temperature, MAT; ≥ 10 °C annual accumulated temperature, ≥ 10 °C AAT) and one hydrological index (mean annual evapotranspiration, MAE), but lowered the soil P content. MAT, MAE and soil P content could affect the leaf P concentration, which cause the indirect effect of SR on leaf P concentration (path coefficient = 0.004). Soil N content had positive effect on the leaf N concentration, which was positively and negatively regulated by MAP and ≥ 10 °C AAT, respectively.

Conclusions

These results confirmed that SR had negatively direct and indirect impacts on plant nutrient status of Chinese fir based on a regional investigation, and the direct associations were greater than the indirect associations. Such findings shed light on the guideline of taking SR into account for the establishment of global biogeochemical models of forest ecosystems in the future studies.
Can consumers’ gamified, personalized, and engaging experiences with VR fashion apps increase in-app purchase intention by fulfilling needs?
Authors: Lau Oiyan , Ki Chung-Wha
Published: October 2021

While the development of virtual reality (VR) apps is trending among fashion retailers to cope with the COVID-19 pandemic and promote consumers’ online shopping, less is understood about whether and the way these new VR apps increase consumers’ in-app purchase. This study was designed to address this issue by applying self-determination theory within the context of Taobao Life, a 3D avatar-based and game-featured virtual world on the Taobao app. Specifically, we investigated (1) whether the extent to which a VR fashion app provides consumers with a sense of gamified experience (H1: challenge, and H2: achievement), personalized experience (H3: avatar customization, and H4: avatar identification), and engaging experience (H5: social presence, and H6: social support) fulfills their competence, autonomy, and relatedness needs; (2) whether these intrinsic needs fulfill determine positive consumer behavioral intentions (H7: intention to continue to use VR apps, and H8: intention to make in-app purchase), and (3) whether the intention to continue to use VR apps leads to a positive in-app purchase intention (H9). We tested the above empirically by conducting an online survey via Dynata, and the dataset of 251 responses was analyzed using structural equation modeling. The findings of our research provide theoretical and practical implications that can be applied in the fashion retail business.
Housing arrangement and vegetation factors associated with single-family home survival in the 2018 Camp Fire, California
Authors: Knapp Eric E. , Valachovic Yana S. , Quarles Stephen L. , Johnson Nels G.
Published: October 2021

Background

The 2018 Camp Fire, which destroyed 18,804 structures in northern California, including most of the town of Paradise, provided an opportunity to investigate housing arrangement and vegetation-related factors associated with home loss and determine whether California’s 2008 adoption of exterior building codes for homes located in the wildland-urban-interface (WUI) improved survival. We randomly sampled single-family homes constructed: before 1997, 1997 to 2007, and 2008 to 2018, the latter two time periods being before and after changes to the building code. We then quantified the nearby pre-fire overstory canopy cover and the distance to the nearest destroyed home and structure from aerial imagery. Using post-fire photographs, we also assessed fire damage and assigned a cause for damaged but not destroyed homes.

Results

Homes built prior to 1997 fared poorly, with only 11.5% surviving, compared with 38.5% survival for homes built in 1997 and after. The difference in survival percentage for homes built immediately before and after the adoption of Chapter 7A in the California Building Code (37% and 44%, respectively) was not statistically significant. Distance to nearest destroyed structure, number of structures destroyed within 100 m, and pre-fire overstory canopy cover within 100 m of the home were the strongest predictors of survival, but significant interactions with the construction time period suggested that factors contributing to survival differed for homes of different ages. Homes >18 m from a destroyed structure and in areas with pre-fire overstory canopy cover within 30–100 m of the home of <53% survived at a substantially higher rate than homes in closer proximity to a destroyed structure or in areas with higher pre-fire overstory canopy cover. Most fire damage to surviving homes appeared to result from radiant heat from nearby burning structures or flame impingement from the ignition of near-home combustible materials.

Conclusions

Strong associations between both distance to nearest destroyed structure and vegetation within 100 m and home survival in the Camp Fire indicate building and vegetation modifications are possible that would substantially improve outcomes. Among those include improvements to windows and siding in closest proximity to neighboring structures, treatment of wildland fuels, and eliminating near-home combustibles, especially in areas closest to the home (0–1.5 m).
Preparation and evaluation of polymeric beads composed of Chitosan–Gellan Gum–Gum Ghatti/-Gum Karaya polyelectrolyte complexes as polymeric carrier for enteric sustained delivery of Diclofenac sodium
Authors: Verma Anurag , Kumar Pradeep , Rastogi Vaibhav , Mittal Piyush
Published: October 2021

Background

An enteric coating is a multistep technique that involves deposition of a polymeric barrier over uncoated orally administered tablets to prevent them from dissolving or disintegrating in the stomach. However, as soon as the coating dissolves in the alkaline environment of intestine, the whole of the drug come in direct contact with gastric mucosa leading to irritation to distal parts of the gastrointestinal tract (GIT). Considering the above facts, there is clear need to develop a simple and effective enteric release formulation for gastric irritant drugs like Diclofenac sodium (DS). The goal of this study was to create enteric release polymeric polyelectrolyte complex (PEC) beads made up of cationic Chitosan (CH) and anionic Gellan Gum (GG) for sustained DS delivery to the intestine. The beads were prepared by extruding a solution of GG and Gum Ghatti (GT) or GG and Gum Karaya (GK) bearing DS into CH solution in 1% w/v acetic acid, with the help of a syringe fitted with a 18 gauge hypodermic needle.

Results

Instantly created spherical beads were dried in a hot air oven 60 °C overnight. In 0.1 M HCl and 6.8 pH phosphate buffer, the dried beads were tested for drug entrapment in the beads, in vitro swelling of beads and in vitro drug release studies from the beads. The % drug entrapment efficiencies (% DEE) of these PEC beads ranged from 59.54 ± 2.09 to 81.03 ± 4.22%. In 0.1 M HCl, the PEC beads swelled the least in vitro, but expanded significantly in phosphate buffer (pH 6.8). The in vitro release of Diclofenac sodium from different PEC beads in 0.1 M HCl was found to be less than 7.5 percent, whereas the release was sustained for 6 h in phosphate buffer (pH 6.8).

Conclusions

From the experimental data, it may be concluded that these PEC beads can be useful as potential multiple-unit enteric release polymeric carrier systems for sustained delivery of gastric irritant drugs like Diclofenac sodium.
Peptide-based enteral formula vs a whole protein enteral formula after major intestinal surgeries in children
Authors: Mostafa Mohamed Saber , Gamal Yasmin , Soliman Mohamed H.
Published: October 2021

Background

Malnutrition is a common finding after major abdominal surgeries especially after prolonged period of fasting in children. Enteral feeding is the commonest support way postoperatively for stimulating gut hormones, modulating immunity, and maintaining the barrier function of the intestinal mucosa.

Our aim was to compare the results and outcome regarding tolerance, nutritional status, and hospital stay following a postoperative diet of peptide-based enteral formula against a whole protein enteral formula after major intestinal surgeries in pediatric patients who had resection and re-anastomosis after intussusception.

Results

This is a prospective cohort study on two groups of patients with a total of 30 patients during the period between January 2019 and June 2020.

All patients in both groups underwent major intestinal surgeries (resection and re-anastomosis after intussusception). The first group received postoperative whole protein formula exclusively on the 3rd postoperative day while the other group received peptide-based formula exclusively on the same day.

Postoperative mean serum albumin and pre-albumin levels were significantly higher in peptide-based formula group compared to those who had protein-based formula as their initial feeds (P value < 0.05). The average hospital stay was also significantly shorter in the peptide group (P value < 0.05). Peptide formula was easily tolerated than protein formula in postoperative children who had major intestinal surgeries.

Conclusion

Peptide-based enteral formulas are better tolerated and more useful as regards nutritional status than whole-protein formulas in post-operative course of pediatric patients regarding clinical outcome and better economically with shorter hospital stay.
Investigating Student Perceptions of Instructor Talk: Alignment with Researchers’ Categorizations and Analysis of Remembered Language
Authors: Ovid Dax , Rice Mallory M. , Luna Joshua Vargas , Tabayoyong Karen , Lajevardi Parinaz , Tanner Kimberly D.
Published: October 2021

Students were asked to evaluate a stimulus set of previously recorded Instructor Talk quotes as positive or negative, and whether students could recall noncontent instructor language was investigated. Overall, students’ evaluations of Instructor Talk quotes were in alignment with researchers, and most students could recall memories of Instructor Talk.
Physics-constrained deep learning for ground roll attenuation
Authors: Pham Nam , Li Weichang
Published: October 2021

We have developed a method to combine unsupervised and supervised deep-learning approaches for seismic ground roll attenuation. The method consists of three components that have physical meaning and motivation. The first component is a convolutional neural network (CNN) to separate a seismic record into ground roll and signal, while minimizing the residual between the sum of the generated signal and ground roll from two subnetworks and the input seismic record. The second component creates a maximum separation of signal and ground roll in the f- k domain, by training a supervised classifier. The third component is a CNN mapping signal to ground roll, which overcomes the problem of finding appropriate masks in traditional methods. Each component in our method is closely related to and motivated by the wave characteristics of the ground roll. Test results on field seismic records demonstrate the effectiveness of combining these components in preventing signal leakage and removing ground roll from seismic data.
Heterodox transients in time-domain-induced polarization
Authors: Fiandaca Gianluca , Olsson Per-Ivar , Maurya Pradip Kumar , Kühl Anders , Bording Thue , Dahlin Torleif , Auken Esben
Published: October 2021

Negative-induced polarization (IP) time-domain transients, sign-changing or nonmonotonically decaying transients, are currently often considered as measurement errors and are removed in data processing. These transients, here called heterodox in the sense of other than generally accepted signals, might originate from measurement errors, inductive effects, or poor signal processing, but synthetic modeling and field measurements indicate that these transients are physically possible. A simple theoretical explanation of the basic mechanism for their origin can be found through the superposition of contributions from regions with different sensitivities, and such heterodox transients can be identified through the processing of full-waveform IP data. A mathematical classification of orthodox and heterodox IP transients into six different types is evaluated based on the temporal development of the sign of their amplitude and derivative. The basic mechanism for IP transients with heterodox shapes is further investigated by considering the subsurface Cole-Cole parameter sensitivities and time-varying IP potential for 2D synthetic models. The time-domain forward response and sensitivities are computed through a time transformation that accounts for the current waveform. This approach allows for quantitative unbiased estimates of the time-domain transients and sensitivities, different from the estimates obtained when using multiple direct-current forward computations, as is often done in the inversion of time-domain IP data. Time-domain IP transients may differ from the traditionally expected decaying-like transients when the electrode geometry has IP potential sensitivities with different signs for areas with different IP parameters. Hence, previously disregarded IP transients containing valuable information of the subsurface can be kept for inversion and contribute to the final parameter distribution. An increased understanding of theoretically possible IP transients makes way for more accurate processing of data in the future, reducing the time and resources needed for spectral inversion of time-domain data.
Transdimensional simultaneous inversion of velocity structure and event locations in downhole microseismic monitoring
Authors: Jiang Xingda , Zhang Wei , Yang Hui , Zhao Chaofeng , Wang Zixuan
Published: October 2021

In downhole microseismic monitoring, the velocity model plays a vital role in accurate mapping of the hydraulic fracturing image. For velocity model uncertainties in the number of layers or interface depths, the conventional velocity calibration method has been shown to effectively locate the perforation shots; however, it introduces nonnegligible location errors for microseismic events, especially for complex geologic formations with inclinations. To improve the event location accuracy, we have exploited the advantages of the reversible jump Markov chain Monte Carlo approach in generating different dimensions of velocity models and adopted a transdimensional Bayesian simultaneous inversion framework for obtaining the effective velocity structure and event locations simultaneously. The transdimensional inversion changes the number of layers during the inversion process and selects the optimal interface depths and velocity values to improve the event location accuracy. The confidence intervals of the simultaneous inversion event locations estimated by Bayesian inference enable us to evaluate the location uncertainties in the horizontal and vertical directions. Two synthetic examples and a field test are presented to illustrate the performance of our methodology, and the event location accuracy is shown to be higher than that obtained using the conventional methods. With less dependence on prior information, our transdimensional simultaneous inversion method can be used to obtain an effective velocity structure for facilitating highly accurate hydraulic fracturing mapping.
New directions in research on childhood adversity
Authors: Danese Andrea , Lewis Stephanie J.
Published: October 2021

Childhood adversities are major preventable risk factors for poor mental and physical health. Scientific advances in this area are not matched by clinical gains for affected individuals. We reflect on novel research directions that could accelerate clinical impact.
Ibrutinib Plus Rituximab Versus Placebo Plus Rituximab for Waldenström's Macroglobulinemia: Final Analysis From the Randomized Phase III iNNOVATE Study
Authors: Buske Christian , Tedeschi Alessandra , Trotman Judith , García-Sanz Ramón , MacDonald David , Leblond Veronique , Mahe Beatrice , Herbaux Charles , Matous Jeffrey V. , Tam Constantine S. , Heffner Leonard T. , Varettoni Marzia , Palomba M. Lia , Shustik Chaim , Kastritis Efstathios , Treon Steven P. , Ping Jerry , Hauns Bernhard , Arango-Hisijara Israel , Dimopoulos Meletios A.
Published: October 2021

PURPOSE

The double-blind, randomized, placebo-controlled phase III iNNOVATE study showed sustained efficacy of ibrutinib-rituximab in Waldenström's macroglobulinemia (WM). Here, we present the final analysis from iNNOVATE.

METHODS

Patients had confirmed symptomatic WM, either previously untreated or previously treated; patients with prior rituximab had at least a minor response to their last rituximab-based regimen. Patients were randomly assigned to once-daily ibrutinib 420 mg plus rituximab or placebo plus rituximab (n = 75 per arm). The primary end point was progression-free survival (PFS). Secondary end points included response rate, time to next treatment, hemoglobin improvement, overall survival, and safety.

RESULTS

With a median follow-up of 50 (range, 0.5-63) months, median (95% CI) PFS was not reached (57.7 months to not evaluable) with ibrutinib-rituximab versus 20.3 months (13.0 to 27.6) with placebo-rituximab (hazard ratio, 0.250; P < .0001). PFS benefit was regardless of prior treatment status, MYD88 and CXCR4 mutation status, or key patient characteristics. Higher response rates (partial response or better) were observed with ibrutinib-rituximab (76% v 31% with placebo-rituximab; P < .0001) and were sustained over time. Median time to next treatment was not reached with ibrutinib-rituximab versus 18 months with placebo-rituximab. More patients receiving ibrutinib-rituximab versus placebo-rituximab had sustained hemoglobin improvement (77% v 43%; P < .0001). Median overall survival was not reached in either arm. Ibrutinib-rituximab maintained a manageable safety profile; the prevalence of grade ≥ 3 adverse events of clinical interest generally decreased over time.

CONCLUSION

In the final analysis of iNNOVATE with a median follow-up of 50 months, ibrutinib-rituximab showed ongoing superiority across clinical outcomes in patients with WM regardless of MYD88 or CXCR4 mutation status, prior treatment, and key patient characteristics.
Modelling sentiments based on objectivity and subjectivity with self-attention mechanisms
Authors: Ng Hu , Chia Glenn Jun Weng , Yap Timothy Tzen Vun , Goh Vik Tor
Published: October 2021

Background: The proliferation of digital commerce has allowed merchants to reach out to a wider customer base, prompting a study of customer reviews to gauge service and product quality through sentiment analysis. Sentiment analysis can be enhanced through subjectivity and objectivity classification with attention mechanisms.

Methods: This research includes input corpora of contrasting levels of subjectivity and objectivity from different databases to perform sentiment analysis on user reviews, incorporating attention mechanisms at the aspect level. Three large corpora are chosen as the subjectivity and objectivity datasets, the Shopee user review dataset (ShopeeRD) for subjectivity, together with the Wikipedia English dataset (Wiki-en) and Internet Movie Database (IMDb) for objectivity. Word embeddings are created using Word2Vec with Skip-Gram. Then, a bidirectional LSTM with an attention layer (LSTM-ATT) imposed on word vectors. The performance of the model is evaluated and benchmarked against classification models of Logistics Regression (LR) and Linear SVC (L-SVC). Three models are trained with subjectivity (70% of ShopeeRD) and the objectivity (Wiki-en) embeddings, with ten-fold cross-validation. Next, the three models are evaluated against two datasets (IMDb and 20% of ShopeeRD). The experiments are based on benchmark comparisons, embedding comparison and model comparison with 70-10-20 train-validation-test splits. Data augmentation using AUG-BERT is performed and selected models incorporating AUG-BERT, are compared.

Results: L-SVC scored the highest accuracy with 56.9% for objective embeddings (Wiki-en) while the LSTM-ATT scored 69.0% on subjective embeddings (ShopeeRD).  Improved performances were observed with data augmentation using AUG-BERT, where the LSTM-ATT+AUG-BERT model scored the highest accuracy at 60.0% for objective embeddings and 70.0% for subjective embeddings, compared to 57% (objective) and 69% (subjective) for L-SVC+AUG-BERT, and 56% (objective) and 68% (subjective) for L-SVC.

Conclusions: Utilizing attention layers with subjectivity and objectivity notions has shown improvement to the accuracy of sentiment analysis models.
The implications of Industry 4.0 on supply chains amid the COVID-19 pandemic: a systematic review
Authors: Reza Mohammad Nurul Hassan , Jayashree Sreenivasan , Malarvizhi Chinnasamy Agamudai Nambi , Rauf Md Abdur , Jayaraman Kalaivani , Shareef Syed Hussain
Published: October 2021

Background: COVID-19 has caused significant disruptions in supply chains. It has increased the demand for products and decreased the supply of raw materials. This has interrupted many production processes. The emerging technologies of Industry 4.0 have the potential to streamline supply chains by improving time-sensitive customized solutions during this emergency.

Purpose: This research examines the effects of the epidemic on supply chains and how these effects are reduced through Industry 4.0 technology.

Design/methodology/approach: An extensive literature review using the “Preferred Reporting Items for Systematic Review and Meta-Analysis” method was carried out on the impact of the COVID-19 pandemic on supply chains and Industry 4.0 technologies. The study was undertaken by selecting keywords validated by experts and a search was conducted in the Scopus, ProQuest, and Google Scholar databases. Publications from the leading journals on these topics were selected. The bibliographical search resulted in 1484 articles followed by multiple layers of filtering. Finally, the most pertinent articles were selected for reviewing, and a total of 53 articles were analysed.

Findings: This study discusses the impact of COVID-19 on the supply chain and how the emerging technologies of Industry 4.0 can help manufacturers to ease the impact. These technologies will enhance the production system through the automation and optimization of production flow convergence, enabling efficiencies and improvements among the suppliers, manufacturers, and consumers in the COVID-19 situation.

Originality/value: The study summarizes the impact of the COVID-19 on supply chains and shows the potential of Industry 4.0 technologies to lessen the impact on manufacturing supply chains. This is valuable information for policymakers and practitioners so that they can get insights and take necessary actions.
Financial development, poverty, and human development in the Fintech age: a regional analysis of the Southeast Asian states
Authors: Chhorn Dina
Published: October 2021

This paper examines the effect of financial development in the Fintech age, measured by broad money, domestic credit, and mobile money, on poverty and human development in the Southeast Asian economies. Using unbalanced longitudinal dataset (1990-2017), the findings suggest that broad money and domestic credit contribute to poverty reduction and promote human development. The role of mobile money is seen to have a statistically positive impact only if we analyse it with human development. Additionally, when we take a closer look at the different stage of economic, political and institutional development in this region, we found that the positive effect of broad money and domestic credit is mostly found only in the less developed and less democratic countries. The mobile money, on the other hand, is found to statistically promote the human development in both groups of countries, but there is no statistical relationship for poverty analysis. To avoid the endogeneity bias driven by the fact that the variables in the analysis are not exogenous, the paper uses the instrumental variables and two-stage least squares for panel-data estimations, taking from the economic literature on the role of financial development in developing countries. In doing so, along with additional statistical tests of subsample analysis of political and institutional factors and higher- and lower-income countries, the results confirm the robustness in the analysis.
Motivation Differences behind Knowledge Sharing Behaviour among Instagram Food Bloggers in Bandung
Authors:   School of Business and Management, Institut Teknologi Bandung, Indonesia, Nurasiah Sofa Parihah , Wisesa Anggara
Published: October 2021

Abstract. Since becoming a "pop culture" for the millennial generation in sharing information and knowledge, social media has been able to open opportunities for culinary industry players, especially restaurant owners and food bloggers, to collaborate using social media to achieve mutually beneficial goals. Food bloggers uniquely connect restaurants and consumers through culinary product reviews, categorised as knowledge sharing. However, the difference in the motivation behind the knowledge sharing process raises questions about the practice of knowledge sharing that is carried out because of monetary motivation and non-monetary motivation. Following that question, this study aims to understand the motivation behind knowledge sharing activity and sustainability carried out by food bloggers as knowledge contributors. Using the phenomenological approach and method, this research was conducted by arranging interviews with notable food blog account owners on Instagram to explore their experiences as a food blogger. The phenomenological analysis is used to reveal the essence of their experience related to motivation to become a food blogger that encourages them to share their knowledge on social media. The study conducted found that the shift from non-professionals to non-professional food bloggers was due to the trend of reviewing food and requests for cooperation from other Instagram users. On the go, no food blogger has purely monetary or non-monetary motivations. Both motivations emerge and have their respective impacts. Monetary motivation allows food bloggers to experience knowledge-sharing process and behaviour adjustments due to cooperation with restaurant owners. In contrast, non-monetary motivation enables food bloggers to carry out knowledge sharing processes and behaviours independently. Keywords: Knowledge sharing quality, monetary motivation, non-monetary motivation, food blogger, social media
Kesiapan Modal Insani Era Industri 4.0 pada Industri Manufaktur, Perbankan dan Telekomunikasi
Authors:   Sekolah Bisnis dan Manajemen, Institut Teknologi Bandung, Indonesia, Hendarman Achmad Fajar , Primatasya Astrid Alfina , Sufiadi Azzahra Nabila , Sonia Veren
Published: October 2021

Abstract. Digital transformation has interested many firms or organizations in the World. This transformation relates to the context of industry 4.0. One of the most organizational parts affected by the transformation is human capital. Therefore, this research will conduct a mapping through analyzing the readiness of a firm to face industry 4.0 related to the human capital aspect (Knowledge, Hard Skills, Soft Skills, and Attitude) The method used in this research is quantitative method and employs a questionnaire survey to gather the data from telecommunication, banking, and manufacture company in Indonesia. Then, the result of the gaps is analyzed using descriptive statistics and HDI Formula. The findings of the readiness as follow; Knowledge, preliminary; Hard Skills, not ready; Soft Skills, optimal; Attitude, ready. In this case, Soft Skills become the best (optimal) in facing industry 4.0 compare to the other factors. Keywords: Readiness, gap, human capital, industry 4.0, digital
New Perspectives in COPD Management
Authors: Yawn
Published: October 2021

LEARNING OBJECTIVES
• Collaborate with patients to inform treatment decision-making that addresses their symptoms, goals, and concerns
• Individualize guideline-recommended therapy to reduce chronic obstructive pulmonary disease (COPD) exacerbations, improve lung function, manage daily symptoms such as breathlessness, and help achieve the patient’s goals
• Select an inhaler and an optimal dose of medication to best meet a patient’s needs and capabilities
Procurement for Assembly Under Asymmetric Information: Theory and Evidence
Authors: Davis Andrew M. , Hu Bin , Hyndman Kyle , Qi Anyan
Published: October 2021

We study an original equipment manufacturer (OEM) purchasing two inputs for assembly from two suppliers with private cost information. The OEM can contract with the two suppliers either simultaneously or sequentially. We consider both cases in which the OEM has relatively equal bargaining power (the dynamic bargaining institution) or substantial bargaining power (the mechanism design institution). For the dynamic bargaining institution, we show that in sequential bargaining, the supply chain profit is higher, the OEM earns a lower profit, the first supplier earns a higher profit, and the second supplier may earn a higher or lower profit, than compared with simultaneous bargaining. For the mechanism design institution, we show that all players’ profits are the same in simultaneous and sequential contracting. We also benchmark against a case where the OEM procures both inputs from a single integrated supplier (a dyadic supply chain). We then test these predictions in a human-subjects experiment, which supports many of the normative predictions qualitatively with some deviations: an OEM with relatively equal bargaining power weakly prefers to contract with suppliers simultaneously, whereas an OEM with substantial bargaining power prefers to contract with suppliers sequentially. In addition, the OEM’s profit and supply chain efficiency are higher in the dyadic supply chain than the assembly system.

This paper was accepted by Charles Corbett, operations management.
Sharing Demand Information with Retailer Under Upstream Competition
Authors: Jain Aditya
Published: October 2021

We analyze demand information sharing collaboration between two manufacturers and a retailer under upstream competition. The manufacturers produce partially substitutable products, which are stocked by the retailer that sells them in the market characterized by random demand. The manufacturers are privately informed about uncertain demand and decide on whether to share this information with the retailer. We show that by not sharing information, a manufacturer ends up distorting its wholesale price upward to signal its private information to the retailer, and under upstream competition, this distortion is propagated to the competing manufacturer. Thus, although a manufacturer’s decision to not share information may benefit or hurt its own profit, this always benefits the competing manufacturer. Under low intensity of competition, signaling-driven distortions exacerbate double marginalization and hurt all parties, whereas under more intense competition, these distortions help manufacturers offset downward pressure on wholesale prices. Thus, in equilibrium similarly informed manufacturers share information in the former case but not in the latter case. Additionally, when manufacturers differ in their information accuracies, only the better-informed manufacturer shares information. The retailer always benefits from both manufacturers sharing information, and its benefits are larger when the better-informed manufacturer shares information. We show existence of a contracting mechanism the retailer can employ to enable information sharing. Finally, we analyze manufacturers’ information acquisition decisions and find that under competition, two manufacturers acquire minimal information so that they are better off not sharing information in the information sharing game.

This paper was accepted by Vishal Gaur, operations management.
A New Homotopy Proximal Variable-Metric Framework for Composite Convex Minimization
Authors: Tran-Dinh Quoc , Liang Ling , Toh Kim-Chuan
Published: October 2021

This paper suggests two novel ideas to develop new proximal variable-metric methods for solving a class of composite convex optimization problems. The first idea is to utilize a new parameterization strategy of the optimality condition to design a class of homotopy proximal variable-metric algorithms that can achieve linear convergence and finite global iteration-complexity bounds. We identify at least three subclasses of convex problems in which our approach can apply to achieve linear convergence rates. The second idea is a new primal-dual-primal framework for implementing proximal Newton methods that has attractive computational features for a subclass of nonsmooth composite convex minimization problems. We specialize the proposed algorithm to solve a covariance estimation problem in order to demonstrate its computational advantages. Numerical experiments on the four concrete applications are given to illustrate the theoretical and computational advances of the new methods compared with other state-of-the-art algorithms.
A New Augmented Lagrangian Method for MPCCs—Theoretical and Numerical Comparison with Existing Augmented Lagrangian Methods
Authors: Guo Lei , Deng Zhibin
Published: October 2021

We propose a new augmented Lagrangian (AL) method for solving the mathematical program with complementarity constraints (MPCC), where the complementarity constraints are left out of the AL function and treated directly. Two observations motivate us to propose this method: The AL subproblems are closer to the original problem in terms of the constraint structure; and the AL subproblems can be solved efficiently by a nonmonotone projected gradient method, in which we have closed-form solutions at each iteration. The former property helps us show that the proposed method converges globally to an M-stationary (better than C-stationary) point under MPCC relaxed constant positive linear dependence condition. Theoretical comparison with existing AL methods demonstrates that the proposed method is superior in terms of the quality of accumulation points and the strength of assumptions. Numerical comparison, based on problems in MacMPEC, validates the theoretical results.
“HISTÓRIA PRA NINAR GENTE GRANDE” – SAMBA, ANTIRRACISMO E PEDAGOGIA DOS MULTILETRAMENTOS NO ENSINO DE LÍNGUA PORTUGUESA / “Bedtime story for grown ups” – samba, anti-racism and pedagogy of multiliteracies in Portuguese language teaching
Authors: De Carvalho Karla Veloso , Oliveira Marcia Lisbôa Costa de
Published: October 2021

Este artigo apresenta uma proposta antirracista de ensino de Língua Portuguesa que compreende o samba, e, mais especificamente, o samba-enredo, como expressão cultural e ferramenta de resistência da população negra no Brasil, trazendo para a sala de aula “versos que o livro apagou” (G.R.E.S. ESTAÇÃO PRIMEIRA DE MANGUEIRA, 2019). O trabalho se organiza em três seções. Na primeira, discutem-se aspectos histórico-culturais do samba e seu papel na resistência ao racismo estrutural instaurado no Brasil (NOGUEIRA, 2006; MARTINS, 2005; SIMAS, S/D; LOPES, 2005 e 2006; MUNANGA e GOMES, 2007). Na segunda, reflete-se acerca das concepções antirracistas, fundamentando-se em Djamila Ribeiro (2019), Silvio Luiz Almeida (2019) e Nilma Lino Gomes (2007), que enfatizam a urgência da educação antirracista. A proposta de ensino apresentada neste artigo baseia-se em postulados da Pedagogia dos Multiletramentos (COPE; KALANTZIS; PINHEIRO, 2020; MONTE-MÓR apud OLIVEIRA, 2019), dessa forma, considera o caráter sócio-histórico da língua/linguagem e de outros modos de significação, que se caracterizam pela dinamicidade e pela contínua reelaboração por seus usuários. A proposta estrutura-se em quatro dimensões: prática situada, instrução explícita, abordagem crítica e prática transformada, nas quais tematizam-se a letra do samba-enredo e o desfile da escola de samba G.R.E.S. Estação Primeira de Mangueira de 2019, buscando contribuir para uma educação antirracista.
Assistência de enfermagem a gestantes usuárias de crack e cocaína: revisão integrativa
Authors: Clementino Caroline Valério , Boska Gabriella De Andrade , Silva Julia Carolina De Mattos Cerioni , Oliveira Márcia Aparecida Ferreira de , Claro Heloisa Garcia , Souza Maria Regina Camargo Ferraz
Published: October 2021

Objetivo: identificar na literatura evidências relacionadas à assistência de enfermagem a gestantes usuárias de crack e cocaína nos serviços de saúde. Método: revisão integrativa realizada em julho de 2020, com publicações dos últimos dez anos nas bases de dados Embase (Medline e PubMed), PsycINFO, Scopus e Cinahl. Resultados: foram encontrados 49 artigos, sendo incluídos dois ARTIGOS  internacionais e quatro nacionais. Dentre os conceitos que fundamentam a assistência de enfermagem às gestantes usuárias de crack e cocaína destacam-se: acolhimento, vínculo e encaminhamentos a serviços especializados. Três estudos abordam o despreparo e desconhecimento do enfermeiro diante deste cuidado e constata-se a infrequência de atitudes consonantes com a política de saúde mental. Conclusão: O acompanhamento integral e sistematizado pelo enfermeiro durante o período gestacional é indispensável e necessita de aprimoramento na linha da redução de danos. Os achados sugerem estratégias diferenciadas para a assistência de enfermagem e reforçam as lacunas práticas e científicas relacionadas ao tema
A new characterization of projective special linear groups L3(q)
Authors:   University of Applied Science and Technology, Ebrahimzadeh B.
Published: October 2021

In this paper, we prove that projective special linear groups L3(q), where 0<q=5k±2 (k∈Z) and q2+q+1 is a~prime number can be uniquely determined by their order and the number of elements with same order.
Perfil epidemiológico de intoxicação exógena por medicamentos em Brasília
Authors: Soares Jéssica Yohanna Silva , Lima Beatriz Matos de , Verri Igor Araújo , Oliveira Stefan Vilges de
Published: October 2021

extremamente relevantes, uma vez que apresentam elevada frequência e morbidade na população geral do país. Objetivo: Descrever medidas de intervenção eficazes para redução de casos e óbitos por intoxicações exógenas por medicamentos baseadas no perfil epidemiológico dessas intoxicações na cidade de Brasília-DF. Método: estudo epidemiológico, descritivo, em que foram analisados dados do Sistema de Informação de Agravos de Notificação, referentes à cidade de Brasília-DF compreendendo os casos notificados de intoxicação exógena por medicamentos no período entre os anos de 2011 a 2017. Para subsidiar a discussão e a proposta de intervenção, foi realizada uma revisão integrativa da literatura nas plataformas Scielo e LILACS. Resultados: 22 publicações foram selecionadas após aplicação dos critérios de análise e serviram como base para a proposta de intervenção do presente artigo. Conclusão: Nota-se a importância de estratégias como a promoção de qualidade de vida, educação, proteção, recuperação para a prevenção do suicídio e implantação de embalagens de medicamentos de proteção à criança dentre outras estratégias de intervenções.