bluuebunny/crossref_metadata_2025_split huggingface dataset:
Performance evaluation of forecasting models based on time series and machine learning techniques: an application to light fuel consumption in Brazil
Authors: Rodrigues Lucas , Rodrigues Luciano , Bacchi Mirian Rumenos Piedade 
Published: August 2021

Purpose
Fuel demand forecast is a fundamental tool to guide private planning actions and public policies aim to guarantee energy supply. This paper aims to evaluate different forecasting methods to project the consumption of light fuels in Brazil (fuel used by vehicles with internal combustion engine).

Design/methodology/approach
Eight different methods were implemented, besides of ensemble learning technics that combine the different models. The evaluation was carried out based on the forecast error for a forecast horizon of 3, 6 and 12 months.

Findings
The statistical tests performed indicated the superiority of the evaluated models compared to a naive forecasting method. As the forecast horizon increase, the heterogeneity between the accuracy of the models becomes evident and the classification by performance becomes easier. Furthermore, for 12 months forecast, it was found methods that outperform, with statistical significance, the SARIMA method, that is widely used. Even with an unprecedented event, such as the COVID-19 crisis, the results proved to be robust.

Practical implications
Some regulation instruments in Brazilian fuel market requires the forecast of light fuel consumption to better deal with supply and environment issues. In that context, the level of accuracy reached allows the use of these models as tools to assist public and private agents that operate in this market.

Originality/value
The study seeks to fill a gap in the literature on the Brazilian light fuel market. In addition, the methodological strategy adopted assesses projection models from different areas of knowledge using a robust evaluation procedure.
A history of content marketing
Authors: Beard Fred , Petrotta Brian , Dischner Ludwig 
Published: August 2021

Purpose
Contemporary practitioners of content marketing (CM) often suggest their discipline is an ancient one, yet mainly limit its origins to the custom-published magazines of the late 1800s. The purpose of this paper is to synthesize some of the many definitions of CM and to report the first scholarly history of its development and practice.

Design/methodology/approach
This study’s purposes led to the following research questions: To what extent were CM strategies and tactics used before the 20th century? How have the uses and characteristics of CM changed or remained the same over time? Sources included general histories focusing on the earliest uses of advertising and promotions and edited book chapters and journal articles on the histories of branding and early print advertising, marketing and advertising practices in ancient and medieval periods and the development of consumer cultures around the world.

Findings
Research findings support three conclusions: CM existed much earlier than often acknowledged; has emerged as a unique marketing discipline, strategically and tactically distinguishable from the others (e.g. advertising and sales promotion); and possesses objectives, strategies and tactics that have remained remarkably consistent in practice across the millennia.

Originality/value
The research supports several insights to the history of marketing and the practice of CM. Some of the CM strategies and tactics identified in this paper, for instance, have previously been concluded to be part of advertising’s history. Findings also reveal that many of advertising’s American pioneers actually used CM to persuade 19th-century businessmen to adopt widespread advertising. In addition, the emphasis on interactive, digital media in CM definitions offers a likely explanation for the recent enthusiasm behind CM as a response to global trends in consumer preferences and global competition, as well as why contemporary CM practitioners have often failed to recognize they are practicing a “new” discipline that has actually been in use for thousands of years.
Interpreting community enterprises’ ability to survive in depleted contexts through the Humane Entrepreneurship lens: evidence from Italian rural areas
Authors: Buratti Nicoletta , Albanese Massimo , Sillig Cécile 
Published: August 2021

PurposeDoing business in depleted contexts requires the adoption of an unconventional strategic orientation based on the involvement of the local community and driven by the attainment of economic, environmental and social goals. Previous studies have explored the specific nature of community enterprises (CEs); notwithstanding, little attention has been paid to the understanding of the strategic posture adopted by community entrepreneurs to overcome difficulties and make the business up. In this vein, the study aims to investigate how CEs operating in depleted contexts manage to survive, by successfully achieving multiple – conflicting – goals.Design/methodology/approachThe authors adopted the Humane Entrepreneurship (HumEnt) framework as a form of institutional entrepreneurship where resources are leveraged to evolve the institutional context. This research adopts the case study strategy, focusing on Italian rural CEs.FindingsThe HumEnt approach, which takes into account both economic and non-economic and altruistic values of entrepreneurs, turned as better suited – compared to other approaches – to explain why people try to make business in such high-risk contexts. Second, the holistic approach of the HumEnt framework allowed catching up the particular mechanism that has enabled the CEs to obtain positive achievement.Originality/valueThe adoption of the HumEnt perspective enabled us to understand better the way CEs may survive and even grow where other initiatives have failed.
The effect of engagement partner workload on audit quality
Authors: Cheng Yun , Haynes Christine M. , Yu Michael D. 
Published: August 2021

Purpose
Auditing studies have shifted the research focus from the audit firm level to the individual audit partner level in recent years. Motivated by the call from Lennox and Wu (2018) to explore the effect of audit partners’ characteristics on audit quality in the US, this study aims to develop a new measure of engagement partner workload (EPW), which includes both the size and number of clients audited to test the effect of EPW on audit quality. This study also examines the moderating effect of the partner firm size on audit quality.

Design/methodology/approach
To test the effect of the EPW on audit quality, this study runs multivariate regressions of EPW on each specific client’s discretionary accruals and audit report delays. This study also runs a logistic regression of EPW on clients’ probability of having small profit increases to meet performance benchmarks.

Findings
Results of the hypotheses show that partner workload is positively related to audit quality. The results indicate that partners with larger, but fewer, clients conduct higher quality audits. Further analysis indicates that the relationship between partner workload and audit quality only holds for partners from the non-Big 4 firms.

Originality/value
This study contributes to the literatures of both audit quality and audit partner characteristics, and the results complement initial research aimed at identifying US partner-related characteristics that influence audit quality.
Airline effective operations strategy during COVID-19 pandemic: across regional worldwide survey
Authors: Migdadi Yazan Khalid Abed-Allah 
Published: August 2021

PurposeThis study aims to identify the effective operational strategies for airlines in a pandemic that allow them to recover and bounce back smoothly.Design/methodology/approachThis study adopted quantitative methodology based on secondary data published by the airlines related to operational and performance indicators. The total number of airlines surveyed was 145. The sample of study covers all the following regions: Africa, Asia, Europe, the Middle East, North America and South America. The data analysis of this research passed through several phases to compare the situation before and during pandemic period.FindingsThe effective operational strategy patterns during the outbreak of the COVID-19 pandemic comprise three hybrid strategies and one scheduling strategy. It appears from these strategy models that four strategic alternatives are available for international airlines to adopt, while two strategic alternatives are available for regional airlines. The strategy alternatives for regional and international airlines are all effective, but those of the international airlines are the more effective ones.Originality/valuePrevious studies rarely adopted the theory of operations strategy configuration (emphasizing taxonomies-based perspective) and the organizational resilience theory (emphasizing capability-based perspective) to identify the effective airlines operations strategy patterns in a pandemic, that allow airlines to recover and bounce back smoothly by analyzing the practices of airlines from different geographic regions worldwide.
Visual and olfactory sensory responses of the butterfly Papilio maackii during foraging and courtship
Authors: Chen Shunan , Li Mingtao , Liu Ji , Feng Ying , Yao Jun , Shi Lei , Chen Xiaoming 
Published: August 2021

AbstractColors and chemicals are the most important cues for butterflies to localize mating partners and food. In this study, we used artificial flowers with different colors and plastic butterfly wing mimics to separate the impact of colors from other cues on foraging and courtship of the butterfly Papilio maackii. We found that males relied more on visual cues during foraging and courtship, but females responded more to olfactory signals. Males visited artificial flowers more frequently than females. However, when honey was applied on artificial flowers, the frequency of female's flower visits increased and was much higher than that of male's, suggesting that females may have stronger olfactory than visual senses. During courtship, females were passive, whereas males were very active in chasing females and driving away other males. Similar to courtship among butterflies in a natural population, males showed recognition ability to butterfly wing mimics, indicating that males could accurately identify mates using colors only without any chemical cues. We also analyzed volatiles and identified five types of male‐specific chemicals while no female‐specific chemicals were identified, suggesting that females might have used these male‐specific volatiles to recognize and accepted males during courtship. Pollination of the plant Primula sieboldii mainly depends on P. maackii, and the plant has flowers with purple and mauve colors. Coincidently, P. maackii showed color preference to blue and purple, suggesting that the butterfly and plants might have coevolved during the long course of interactions.
Trends in the surgical management of rectal prolapse: An Asian experience
Authors: Ng Yvonne Ying‐Ru , Tan Emile John Kwong Wei , Fu Cherylin Wan Pei 
Published: August 2021

AbstractBackgroundPosterior compartment pelvic floor prolapse (PCPFP) leads to anatomical distortion and functional impairment. Definitive management involves surgery. Ventral mesh rectopexy (VMR) has gained increasing popularity in the West as it emerges as a durable approach. Existing literature and evidence on safety and efficacy of PCPFP surgery in the Asian population remains sparse. Our study aims to review our institution's experience in surgery for PCPFP.MethodsAll cases of PCPFP surgery in Singapore General Hospital between 2014 to 2019 were studied.ResultsEighty‐three patients had surgery performed for PCPFP, with the majority (83%) in the last 3 years. Median age was 63 years and 92% were female. Most patients (64%) had obstructive defecation symptoms, while the remaining had fecal incontinence, rectal bleeding, or anal discomfort. Main anatomical indication for surgery was external rectal prolapse (48%). Other indications were rectocele and/or rectal intussusception. The majority (66%) had abdominal rectopexy, while 28 underwent Delorme's procedure. Forty‐five of the 50 VMRs were minimally invasive. Patients undergoing rectopexy were observed to be younger. Median length of stay was 3 days. Nine patients had early operative complications of which ileus was most common. Median length of follow‐up was 12 months. The majority (93%) had initial symptom satisfaction. Eleven patients had anatomical recurrence with a median length of 9 months to development. There was no significant difference in outcomes between abdominal vs perineal approach, or laparoscopic vs robotic VMR.ConclusionSurgery for PCPFP has gained acceptance in our Asian institution with good symptom improvement, alongside low morbidity and recurrence.
Molecular profiling and identification of prognostic factors in Chinese patients with small bowel adenocarcinoma
Authors: Pan Hongming , Cheng Huanqing , Wang Huina , Ge Weiting , Yuan Meiqin , Jiang Sujing , Wan Xiangbo , Dong Ying , Liu Zhen , Zhao Rongjie , Fang Yong , Lou Feng , Cao Shanbo , Han Weidong 
Published: August 2021

AbstractSmall bowel adenocarcinoma (SBA) is a rare malignancy with a poor prognosis and limited treatment options. Despite prior studies, molecular characterization of this disease is not well defined, and little is known regarding Chinese SBA patients. In this study, we conducted multigene next‐generation sequencing and 16S ribosomal RNA gene sequencing on samples from 76 Chinese patients with surgically resected primary SBA. Compared with colorectal cancer and Western SBA cohorts, a distinctive genomic profile was revealed in Chinese SBA cohorts. According to the levels of clinical actionability to targetable alterations stratified by OncoKB system, 75% of patients harbored targetable alterations, of which ERBB2, BRCA1/2, and C‐KIT mutations were the most common targets of highest‐level actionable alterations. In DNA mismatch repair–proficient (pMMR) patients, significant associations between high tumor mutational burden and specific genetic alterations were identified. Moreover, KRAS mutations/TP53 wild‐type/nondisruptive mutations (KRASmut/TP53wt/non‐dis) were independently associated with an inferior recurrence‐free survival (hazard ratio [HR] = 4.21, 95% confidence interval [CI] = 1.94‐9.14, P < .001). The bacterial profile revealed Proteobacteia, Actinobacteria, Firmicutes, Bacteroidetes, Fusobacteria, and Cyanobacteria were the most common phyla in SBA. Furthermore, patients were clustered into three subgroups based on the relative abundance of bacterial phyla, and the distributions of the subgroups were significantly associated with the risk of recurrence stratified by TP53 and KRAS mutations. In conclusion, these findings provided a comprehensive molecular basis for understanding SBA, which will be of great significance in improving the treatment strategies and clinical management of this population.
Effects of canagliflozin on major adverse cardiovascular events by baseline estimated glomerular filtration rate: Pooled Hispanic subgroup analyses from the CANVAS Program and CREDENCE trial
Authors: Weir Matthew R. , Gogate Jagadish , Damaraju C.V. , Correa‐Rotter Ricardo , Mahaffey Kenneth W. 
Published: August 2021

AbstractAimTo assess the risk of major adverse cardiovascular events (MACE) of canagliflozin in Hispanic patients with type 2 diabetes (T2D) and high cardiovascular risk or nephropathy with varying levels of kidney function.Materials and MethodsThis post hoc analysis included integrated, pooled data from the CANVAS Program and CREDENCE trial. The effects of canagliflozin versus placebo on major adverse cardiovascular events (MACE; i.e. cardiovascular death, non‐fatal myocardial infarction, and non‐fatal stroke) were assessed in subgroups by baseline estimated glomerular filtration rate (eGFR; <45, 45‐60, and >60 mL/min/1.73 m2) overall and in the Hispanic cohort. Hazard ratios (HRs) and 95% confidence intervals (CIs) were estimated using Cox regression models, with subgroup by treatment interaction terms added to test for heterogeneity.ResultsA total of 14 543 participants were included; 3029 (20.8%) self‐identified as Hispanic. In the overall population, canagliflozin reduced the risk of MACE compared with placebo (HR, 0.83; 95% CI, 0.75, 0.92), with no heterogeneity observed across eGFR subgroups (interaction P = .22). In the Hispanic cohort, canagliflozin also reduced the risk of MACE (HR, 0.71; 95% CI, 0.55, 0.92), with no heterogeneity by baseline eGFR (interaction P = .25), including among the Hispanic participants at highest risk with a baseline eGFR of less than 45 mL/min/1.73 m2.ConclusionCanagliflozin reduced the risk of MACE overall, and among Hispanic participants with T2D and high cardiovascular risk or nephropathy in the CANVAS Program and CREDENCE trial, without heterogeneity by baseline eGFR.
Fiber orientation dependence of tribological behavior of short carbon fiber reinforced ceramic matrix composites
Authors: Zhou Wei , Meiser Matthias , Wich Felix , Liensdorf Tom , Freudenberg Wolfgang , Li Yang , Langhof Nico , Krenkel Walter 
Published: August 2021

AbstractCarbon fibers as key component in short carbon fiber reinforced ceramic matrix composites (CMCs) have obvious influence on their tribological behavior. In this work, we creatively design CMCs with five different fiber orientations, namely, randomly oriented fibers, fibers oriented parallel to the friction surface and angled at 0°, 45°, and 90° toward the sliding direction, and standing fibers that are vertical to the friction surface, to investigate fiber orientation dependence of tribological behavior of short carbon fiber reinforced ceramic matrix composites. Tribological tests of CMC brake pads mated with steel disk on a laboratory‐scale dynamometer indicate that short carbon fiber reinforced carbon−silicon carbide (C/C‐SiC) brake pads with fibers orientated at 45° show the best tribological performance among the pads with fibers unidirectionally aligned. C/C‐SiC composites with short carbon fibers randomly distributed, exhibiting excellent tribological properties, are still ideal candidates for manufacturing high performance friction materials.
Bipolar fractionated radiofrequency midface lift: A retrospective review
Authors: Martin Jennifer C. , Dokic Yelena , Munavalli Gilly , Malone Cedar Helen 
Published: August 2021

AbstractIntroductionMidface rejuvenation is an important component of overall facial rejuvenation. Traditionally, midfacial skin laxity and volume loss have been addressed with surgical midfacial lifting and soft tissue augmentation with dermal fillers. We present a novel noninvasive approach to midface rejuvenation with a bipolar fractionated radiofrequency (FRF) device that addresses both volume loss and improves skin laxity.MethodsAn institutional review board‐approved retrospective review was performed and included subjects who received midfacial treatment with a bipolar FRF device. Follow‐up photographs were objectively assessed by a blinded evaluator using a validated scale, the Facial Laxity Rating Scale. Paired t tests were used to evaluate the results for statistical significance.ResultsA total of 15 subjects were included in the study. The average age was 64 and ranged from 48 to 73. The average midface laxity score prior to treatment was 5.6 and post‐treatment was 6.3 (p < 0.01).ConclusionBipolar FRF is a promising noninvasive intervention for midface rejuvenation.
Metabolic changes in the cingulate gyrus, precuneus, and white matter in anorexia nervosa using multivoxel MR spectroscopy
Authors: Regnaud Alice , Boto José , Klauser Antoine , Lövblad Karl‐Olof , Vargas Maria Isabel , Lazeyras François 
Published: August 2021

AbstractBackground and PurposeThis study aimed to highlight anorexia nervosa‐related metabolic changes in different brain regions with different gray and white matter contents.MethodsIn a prospective study, 25 anorexic patients with mean body mass index (BMI) of 14.79 kg/m2(range 10.04–20.58) were compared with 15 healthy controls with mean BMI of 21.08 kg/m2(range 18.36–27.34). Two‐dimensional magnetic resonance spectroscopic imaging was acquired in the axial plane above the corpus callosum, including frontal, precentral, postcentral, cingular, and parietal regions, as well as the precuneus, each voxel containing gray and white matter.ResultsIn the anorexic group, a significant increase of choline/creatine was observed in all brain regions except the precuneus: frontal (p= 0.009), cingulate (p= 0.001), precentral (p= 0.001), postcentral (p= 0.001), and parietal (p= 0.002); and in white and gray matter (p< 0.001). Macromolecules09/creatine was decreased in the following regions: frontal (p= 0.003), cingulate (p< 0.001), precentral (p= 0.004), and precuneus (p= 0.007), and in white and gray matter (p< 0.05). We observed significantly lower values of N‐acetyl aspartate/creatine in the frontal (p< 0.001) and precentral (p< 0.001) regions and in voxels containing more than 50% white matter (p= 0.001); and significantly lower values of myo‐inositol/creatine in the precentral (p= 0.006), postcentral (p< 0.001), and precuneus (p= 0.006) regions.ConclusionsWe observed an increase in choline/creatine in anorexics, possibly reflecting increased cell turnover; a decrease in macromolecules, which was particularly low in the cingulate and precuneus the former being known to be altered in eating disorders; and a decrease in N‐acetyl aspartate/creatine considered as a marker of neuronal density and function.
Risk and Protective Factors for Changes in Adolescent Psychosocial Adjustment During COVID‐19
Authors: Romm Katelyn F. , Park Yea Won , Hughes Jeffrey L. , Gentzler Amy L. 
Published: August 2021

The current study examined (1) changes in psychosocial adjustment among adolescents completing two surveys before COVID‐19 and those completing the final survey during COVID‐19 and (2) related risk/protective factors. Participants were 208 US adolescents (Mage = 15.09, SD = 0.50, 48.8% female, 86.1% White; 40.9% COVID group) who completed longitudinal surveys assessing psychosocial adjustment and related risk/protective factors (e.g., emotion regulation, well‐being pursuits). Only adolescents completing Wave 3 during COVID‐19 experienced increases in depressive symptoms, negative affect, and isolation and decreases in positive affect and friendship. Several variables served as risk (i.e., dampening) and protective (i.e., eudaimonic and hedonic motives) factors of these changes. Findings highlight the range of factors that are distinctly associated with negative changes in adolescent adjustment during COVID‐19.
The perverse effect of environmental regulation on emissions: The role of product‐mix changes
Authors: St‐Pierre Marc , Elrod Aaron A. 
Published: August 2021

AbstractWe study the effect of environmental regulation (taxation) on emissions when the only available abatement method consists of product‐mix changes. Firms choose to produce one or both varieties of a product—a pollution‐intensive (dirty) and a non‐pollution‐intensive (green)—and compete in a differentiated Cournot duopoly. We characterize the equilibrium market structure as a function of the tax rate and show that increases in the tax can promote product‐mix changes that lead to a jump in emissions for some tax range, an effect we callthe perverse effect of taxation. Our work emphasizes the key role horizontal product differentiation in this process and shows that the perverse effect does not require the presence of vertical product differentiation. Further, the perverse effect of taxation is especially strong in the presence of incomplete regulation, that is, when only one of the markets is subject to taxation.