bluuebunny/crossref_metadata_2025 huggingface dataset:
Paroxysmal sympathetic hyperactivity in a child with stroke: a case report
Authors: Jomalkar Jay Bhagwat , Vijayan Vineetha , Saoji Avanti Rajendra , Vaidyanathan Abhinaya , Unki Praveen , Kondekar Santosh , Rathi Surbhi , Deshmukh Chandrahas T.
Published: July 2023

Background

Paroxysmal sympathetic hyperactivity (PSH) is the result of dysregulated autonomic function with sympathetic symptoms characterised by increased heart rate, respiratory rate, blood pressure and temperature with abnormal posture, which predominately occur periodically but can be persistent in severe cases. Common causes that present in similar fashion such as infectious process (bacteremia, meningitis, etc.); non-PSH neurological deterioration (increased intracranial pressure, intracranial haemorrhage, intracranial oedema, seizures, encephalitis); pulmonary embolism; thyrotoxicosis, alcohol or drug withdrawal; neuroleptic malignant syndrome; serotonin syndrome; and malignant hyperthermia need to be excluded before diagnosing PSH. The earlier the diagnosis made, the better the prognosis.

Case presentation

We report a case of a 3-year-old male child who was a diagnosed case of Tetralogy of Fallot presented with left focal seizure with secondary generalisation. Child also had respiratory complaints prior to convulsion. He had developed signs of raised intracranial pressure. Blood culture sent to rule out infective endocarditis was negative. CT brain showed bilateral diffuse cortical infarct. Child developed signs and symptoms of PSH such as fever, tachycardia, tachypnoea, hypertension, diaphoresis, dystonia and bilateral completely dilated pupils. Other common causes such as infective endocarditis, increased intracranial pressure, intracranial oedema, intracranial haemorrhage, seizure, encephalitis and infectious processes (bacteremia, meningitis and infective endocarditis) were ruled out. The diagnosis of PSH was made and started on propranolol along with clonidine. Child responded well to the treatment.

Conclusion

The complex pathophysiology of PSH warrants extensive work-up to rule out other common causes. The outcome of our patient shows the importance of early diagnosis and multidisciplinary treatment for better outcome.
A paradigm shift in non-viral liver cirrhosis: a multicenter study on clinicoepidemiological characteristics and outcome of non-B non-C cirrhosis
Authors: Ramadan Haidi Karam-Allah , El-Raey Fathiya , Zaky Samy , Bakr Asmaa , Meghezel El-Zahraa M. , Bazeed Shamardan Ezzeldin S. , Badawi Rehab , Abd-Elsalam Sherief , Elbadry Mohamed , Hagag Mahmoud , Abu Rahma Mohamed Zakaria
Published: July 2023

Background

Chronic hepatitis C (HCV) and B viruses (HBV) represent the commonest global causes of liver cirrhosis. Other etiologies of non-viral cirrhosis such as autoimmune, metabolic, vascular, or biliary diseases are underestimated. The study aimed to identify causes, clinicoepidemiological characteristics, and outcome of non-B non-C liver cirrhosis. This Egyptian multicenter study recruited patients with liver cirrhosis excluding HCV and HBV. Clinical evaluation and the mortality were recorded. Laboratory, radiological, and histopathological assessment to diagnose the etiology was performed.

Results

One hundred eighty-eight patients were included: 54.3% were males. Autoimmune hepatitis (AIH) was the most common cause of cirrhosis (28.2%), followed by Budd-Chiari syndrome (BCS) in 25%, and cryptogenic in 23.9%. Metabolic causes such as Wilson’s disease, non-alcoholic steatohepatitis (NASH), and hemochromatosis were reported in 7.4%, 3.2%, and 1.1%, respectively. Biliary and cardiac cirrhosis were less frequent. Older age was prevalent in hemochromatosis (67.5 ± 17.7 years) and NASH (60.7 ± 11), while young age in Wilson’s disease (29.5 ± 14.8) and secondary biliary cirrhosis (14.8 ± 4.8). Rural residence was common (60.6%). Mortality was reported in BCS (40.4%), cryptogenic (28.9%), cardiac (25%), Wilson’s disease (21.4%), AIH (17%), and NASH (16.7%). Hepatocellular carcinoma complicated 10.6% of cases. A significantly high percentage of patients had decompensated cirrhosis. Child–Pugh class and rural residence were significant predictors of mortality.

Conclusion

This first report on non-B non-C cirrhosis in Egypt revealed a high prevalence of AIH, BCS, and cryptogenic cirrhosis. Advanced Child class and rural residence were the predictors of mortality.
Risk factors associated with Salmonella in dairy cattle farms in Henan and Hubei provinces, China
Authors: Wang Jie , Zhu Xiaojie , Zhao Yuxi , Xue Yongkang , Zhang Zhen , Yan Lei , Chen Yingyu , Robertson Ian D. , Guo Aizhen , Aleri Joshua W.
Published: July 2023

A cross-sectional study was conducted to evaluate the risk factors associated with the Salmonella infection status of dairy herds in Henan and Hubei provinces, China. Herds were assigned a Salmonella status based on the isolation of Salmonella from fecal samples obtained from adult lactating dairy cows. Information on potential biosecurity risk factors was collected using a questionnaire template via a 15-min face-to-face interview with dairy cattle producers from May 2020 to March 2021. The questionnaire consisted of 23 questions across two broad categories of potential biosecurity risk factors: farm and biosecurity managemental factors. A total of 48 farms were surveyed. In all (100%, 48/48) of the surveyed farms, although sick animals were separated from healthy animals using fencing, there were no strict quarantine protocols for newly introduced animals. Mixed species rearing was practiced in 35.4% (17/48) of the farms. Feces were removed more than once a day in 45.8% (22/48) of the farms, whereas the remainder (54.2%, 26/48) only removed animal feces once a day. A total of 29.2% (14/48) of the farms were located < 2 km from other livestock farms. The use of personal protective equipment was consistently performed on all farms, with a majority of the workers on most farms (81.3%, 39/48) always disinfecting footwear before entering production areas. A significant association between Salmonella-positive status and the high frequency of the presence of wildlife (birds and rodents in sheds and feed storage places) was recorded (OR: 11.9, 95% CI: 1.7, 84.1, p = 0.013). Fortunately, no farms shared farm equipment with other farms. The study highlights the occurrence of wildlife as a risk factor for the presence of Salmonella in investigated dairy herds. There is a need to institute appropriate on-farm control measures for wild birds and rodents to control the potential spread of Salmonella in dairy production systems.
Deep learning-based upgoing and downgoing wavefield separation for vertical seismic profile data
Authors: Tao Bocheng , Yang Yuyong , Zhou Huailai , Wang Yuanjun , Lyu Fen , Li Wu
Published: July 2023

The vertical seismic profile (VSP) considerably aids attenuation analysis and velocity calibration, enabling high-resolution seismic exploration. However, the imaging and interpretation of VSP data require pure upgoing and downgoing wavefields, and their separation is critical in processing and interpretation. Often, achieving high precision and efficient wavefield separation can be regarded as a challenging issue. To automate this process with higher accuracy, we develop a deep-learning high-precision intelligent separation method. First, to construct a physics-driven and data-generic training set, the well-log data from different geologic environments are used to simulate the upgoing and downgoing VSP data independently. Thereafter, we train a multitask-learning neural network to regress the network weights before and after separation to tune a mapping model, which is used to implement intelligent upgoing and downgoing wavefield separation. Validation data confirm the feasibility of our method. To further study the generalizability and robustness of the method, we apply the trained model to separate the modeled and real VSP data. By analyzing the separated profiles and frequency-wavenumber spectra, it is observed that the intelligent separation method is superior to conventional methods with a balance between accuracy and efficiency. It can be concluded that our method can separate upgoing and downgoing wavefields in VSP data with excellent performance, even in complex geologic environments. Our study indicates that the multitask-learning neural network combined with a physics-driven and data-generic training set is a new strategy to separate upgoing and downgoing wavefields and deserves to be popularized and applied.
Observation of enhanced activity of the 178m2Hf isomeric target after its irradiation by bremsstrahlung radiation
Authors: Kirischuk Vladimir
Published: July 2023

Comparing the spectra acquired during two series of irradiations, the peak intensities of the 178m2Hf isomer have been found to be higher at the end of each series, while the intensities of the 150Eu and 133Ba peaks, which are present in the isomeric target, remain stable. This gives a support to the hypothesis that some additional activity is produced during irradiation. The half-life of this activity appears to be several days.
Association of Blood Pressure With Cardio-Renal Events and Mortality in Type 2 DM: A National Health Insurance Database
Authors: Kim Bo-Yeon , Lee Ji-In , Lee Hye-Mi , Kim So Hun , Mo Eun Yeong , Son Jang Won , Lee Sihoon , Kim Sungrae
Published: July 2023

Context

The relationship of blood pressure (BP) with cardio-renal events and all-cause mortality in type 2 diabetes mellitus (T2DM) is still controversial.

Objective

To investigate the optimal BP target in Korean individuals with T2DM.

Methods

Using the Korean National Health Insurance System database, data of individuals with T2DM who underwent regular health checks from January 1, 2007, to December 31, 2007, were extracted (N = 1 800 073). Among them, a total of 326 593 individuals were included in the final study. The study population was divided into 7 groups according to their observed systolic blood pressure (SBP) (<110, 110-119, 120-129, 130-139, 140-149, 150-159, 160-169, and ≥170 mmHg) and diastolic blood pressure (DBP) (<65, 65-69, 70-74, 75-79, 80-84, 85-89, and ≥90 mmHg). Hazard ratios (HRs) of cardio-renal events and all-cause mortality according to BP categories were analyzed.

Results

Compared with SBP of 120-129 mmHg and DBP of 75-79 mmHg, SBP of ≥130 mmHg and DBP of ≥ 80 mmHg were associated with an increase in HR of major cardiovascular adverse events (MACEs). SBP of 120-129 mmHg and DBP 75-79 mmHg were associated with the lowest HR of all-cause mortality. Both lower BP (SBP/DBP <120/70 mm) and higher BP (SBP/DBP ≥130/80 mmHg) were associated with an increased HR of all-cause mortality. Contrary to MACE, the lower the SBP, the lower the HR of renal events.

Conclusion

In patients with T2DM, the optimal cutoff value of BP associated with a lower incidence of MACE and mortality may be 120-129 mmHg for SBP and 75-79 mmHg for DBP. However, lower SBP may be helpful for T2DM patients with a high risk of renal disease.
Diagnosis, Genetics, and Management of 24 Patients With Cardiac Paragangliomas: Experience From a Single Center
Authors: Shi Chuan , Liu Jian-Zhou , Zeng Zheng-Pei , Miao Qi , Fang Li-Gang , Chen Shi , Ping Fan , Sun Hao , Lu Lin , Chen Li-Bo , Fu Yong , Zhao Da-Chun , Yu Chun-Hua , JiaJue Rui-Zhi , Wang Xi , Liu Xing-Rong , Ma Guo-Tao , Zhang Chao-Ji , Pan Hui , Yang Hong-Bo , Wang Yi-Ning , Li Ming , Li Fang , Shen Zhu-Jun , Liang Zhi-Yong , Xing Xiao-Ping , Zhu Wen-Ling
Published: July 2023

Context

Paragangliomas located within the pericardium represent a rare yet challenging clinical situation.

Objective

The current analysis aimed to describe the clinical characteristics of cardiac paragangliomas, with emphasis on the diagnostic approach, genetic background, and multidisciplinary management.

Methods

Twenty-four patients diagnosed with cardiac paraganglioma (PGL) in Peking Union Medical College Hospital, Beijing, China, between 2003 and 2021 were identified. Clinical data was collected from medical record. Genetic screening and succinate dehydrogenase subunit B immunohistochemistry were performed in 22 patients.

Results

The median age at diagnosis was 38 years (range 11-51 years), 8 patients (33%) were females, and 4 (17%) had familial history. Hypertension and/or symptoms related to catecholamine secretion were present in 22 (92%) patients. Excess levels of catecholamines and/or metanephrines were detected in 22 (96%) of the 23 patients who have completed biochemical testing. Cardiac PGLs were localized with 131I-metaiodobenzylguanidine scintigraphy in 11/22 (50%), and 99mTc-hydrazinonicotinyl-tyr3-octreotide scintigraphy in 24/24 (100%) patients. Genetic testing identified germline SDHx mutations in 13/22 (59%) patients, while immunohistochemistry revealed succinate dehydrogenase (SDH) deficiency in tumors from 17/22 (77%) patients. All patients were managed by a multidisciplinary team through medical preparation, surgery, and follow-up. Twenty-three patients received surgical treatment and perioperative death occurred in 2 cases. Overall, 21 patients were alive at follow-up (median 7.0 years, range 0.6-18 years). Local recurrence or metastasis developed in 3 patients, all of whom had SDH-deficient tumors.

Conclusion

Cardiac PGLs can be diagnosed based on clinical manifestations, biochemical tests, and appropriate imaging studies. Genetic screening, multidisciplinary approach, and long-term follow-up are crucial in the management of this disease.
Analysis of factors affecting intraoperative conversion from thoracoscopic radical resection of lung cancer to thoracotomy and intraoperative management experience
Authors: Zhang Zhen , Zhang Yuefeng , Zhang Jian , Su Peng
Published: July 2023

Objective: To explore the factors affecting the intraoperative conversion of video-assisted thoracoscopic surgery (VATS) to thoracotomy in patients with lung cancer.

Methods: The clinical data of 80 patients with lung cancer in The Fourth Hospital of Hebei Medical University from May 2019 to December 2021 were retrospectively analyzed. The patients who were treated with VATS alone were included into thoracoscopy group (n= 40), and those who were intraoperatively converted from VATS to thoracotomy were included into conversion group (n= 40). The medical record data were collected, the influencing factors of intraoperative conversion from VATS to thoracotomy were analyzed, and the surgical indexes and postoperative complications were compared between the two groups.

Results: Multivariate regression model showed that tumor in the upper lobe, central lung cancer, history of pulmonary tuberculosis, pleural adhesion ≥ Grade-4 and maximum tumor diameter ≥ 35 mm were risk factors for patients with lung cancer undergoing conversion from VATS to thoracotomy (p< 0.05). In the conversion group, the surgical duration and hospital stay were longer, the intraoperative bleeding volume and thoracic drainage volume were larger, and the total incidence of postoperative complications was higher than those in the thoracoscopy group (p< 0.05).

Conclusion: Conversion from VATS to thoracotomy may increase the risk of complications in patients with lung cancer. Tumor in the upper lobe, central lung cancer, history of pulmonary tuberculosis, high degree of pleural adhesion and large tumor diameter are risk factors for conversion from VATS to thoracotomy.

doi: https://doi.org/10.12669/pjms.39.5.7422

How to cite this: Zhang Z, Zhang Y, Zhang J, Su P. Analysis of factors affecting intraoperative conversion from thoracoscopic radical resection of lung cancer to thoracotomy and intraoperative management experience. Pak J Med Sci. 2023;39(5):---------.  doi: https://doi.org/10.12669/pjms.39.5.7422

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Bioconversion of biowaste by black soldier fly larvae (Hermetia illucens L.) for dried larvae production: A life cycle assessment and environmental impact analysis
Authors: Nugroho Rudy Agung , Rofiq Muhammad Nasir , Santoso Arif Dwi , Yanuar Ahmad Ismed , Hanifa Rahmania , Nadirah Nadirah
Published: July 2023

Background: Hermetia illucens L. have gained popularity in recent years as an environmentally friendly response to both the present and potential future food/feed crisis. The larvae of H. illucens L., or black soldier fly larvae (BSFL), is an alternative solution to tackle the issue of organic waste bioconversion. However, understanding the environmental loads associated with biowaste bioconversion using BSFL to produce dried BSFL is a pivotal point to keep the environment sustainable. This study reported a life cycle assessment (LCA) of the biowaste bioconversion process of BSFL and determined the environment impact analysis to make recommendations for modifications to lessen environmental consequences.

Methods: The methodology used is life cycle assessment (LCA), which includes: (a) system boundary determination (gate-to-gate), starting from biowaste production, biowaste bioconversion, prepupae and BSFL frass production. The system boundary of the dried BSFL production is designed for both the processing and production of one cycle of BSFL; (b) life cycle inventory activities carried out at PT Biomagg Sinergi Internasional, Depok, West Java, Indonesia; (c) conducting life cycle impact assessment on five environmental impact categories namely global warming potential (GWP), acidification (AC), terrestrial eutrophication (TE), fossil fuel depletion (FFE), eco-toxicity (ET); and (d) interpretation of the assessment result. The LCA is conducted using openLCA 1.11 software and TRACI 2.1 impact assessment method.

Results: The impact values of GWP, AC, TE, FFE, and ET, per 100 kg of BSFL dried production was 6.687 kg CO2 eq; 0.029 kg SO2-eq; 0.092 kg N-eq; 16.732 MJ surplus; 121.231 CTUe. Production of prepupa had the highest hotspots in these emissions, followed dried BSFL production.

Conclusions: Efforts to reduce environmental impacts that can be done are by implementing an integrated rearing system using substrate from a single type of known substrate for BSFL and using alternative drying methods for BSFL dried production.
Finding presence during a pandemic: a qualitative analysis of participation in an Irish University online mindfulness practice during the COVID-19 emergency
Authors: Flynn Eva , Salmon Niamh , O’Keeffe Derek , Hassed Craig
Published: July 2023

Background: In response to the change, and distress, that many faced during the time of the COVID-19 pandemic, a twice weekly online practice of mindfulness meditation was delivered to staff, students and the wider community outside of the University of Galway, Ireland. Mindfulness is a contemplative practice which improves coping skills and reduces emotional distress. This practice allows attention to be directed to the present moment, with acceptance and without judgement. Strengthening this practice nurtures skills of dealing with difficult emotions, changing unhelpful habits, behaviours and strengthening resilience during uncertainty. The twice weekly practice of an online mindfulness meditation was delivered in the context of the changes and preventative measures of the first pandemic lockdown in Ireland. The main objective of this practice is to cultivate skills of returning to the present, being grounded and building resilience amidst adversity. The aim of this study is to examine the effect of the offered regular online practice of mindfulness meditation for participants during the COVID-19 emergency, exploring through qualitative analysis of their own lived experience with this intervention.

Methods: This qualitative study consisted of a short-structured interview process to explore the participants’ experience of the online practice of mindfulness during the COVID-19 pandemic.

Results:  From participating in this regular practice at this time, participants reported improved self-awareness, stress management and emotional regulation. Along with this, participants reported the felt sense of empathy and compassion and a sense of connection. Conclusion: This study has shown that during the difficult time of the COVID-19 pandemic, an online mindfulness meditation led to better wellbeing.
ediblecity: an R package to model and estimate the benefits of urban agriculture
Authors: Pueyo-Ros Josep , Comas Joaquim , Corominas Lluís
Published: July 2023

Urban agriculture is gaining attraction to become one of the pillars of the urban ecological transition and to

increase food security in an urbanized planet. However, there is a lack of systematic quantification of the

benefits provided by urban agriculture solutions. In this paper, we present an R package to estimate several

indicators related to benefits of urban agriculture. The goal is to provide a tool for researchers and practitioners

interested in the impacts of urban agriculture. The ediblecity package provides functions to calculate 8

indicators: urban heat island, runoff prevention, green areas accessibility, NO2 sequestration, jobs created in

commercial gardens, volunteers involved in community gardens, green per capita and, finally, food production.

Moreover, the package also provides a function to generate scenarios with different implementations of urban

agriculture. We illustrate the use of the package by comparing three scenarios in a neighborhood of Girona

(Spain), which is included in the package as an example dataset. There, we compare scenarios with an

increasing amount of urban agriculture solutions. The ediblecity package is open-source software. This

allows other R developers to contribute to the package, providing new functionalities or improving the existing

ones.
Assessing the impact of COVID-19 on STEM (science, technology, engineering, mathematics) researchers in India
Authors: Mehta Nikita , Inamdar Vedika , Puthillam Arathy , Chunekar Shivani , Kapoor Hansika , Tagat Anirudh , Subramanyam Deepa
Published: July 2023

Background: The coronavirus disease 2019 (COVID-19) pandemic and the nationally mandated lockdown has resulted in facility closures, decreased laboratory activities, and shifting to remote working. The effects of the pandemic have spread across all professions, including academia. Hence, the present study aims to understand the extent of the impact of the COVID-19 pandemic on STEM (science, technology, engineering, mathematics) researchers and stakeholders in India.

Methods: The study employed a mixed method design. Both quantitative (survey) and qualitative (interview) methods were used to gain a comprehensive understanding on the impact of the COVID-19 pandemic on STEM (science, technology, engineering, mathematics) early career researchers (ECRs), graduate students, Heads of Institutes, suppliers of scientific equipment, funders, and other stakeholders in India.

Results: A total of 618 researchers completed the survey, and 24 stakeholders were interviewed for this study. Our findings highlight the importance of institutional and social support for mental well-being and scientific productivity among researchers, especially during the pandemic. It also shows the impact of the disruptions in grant disbursals on research activities of scientists. Further, the gendered impact between these relationships was also noted, all of which hint at a need for structured reform within STEM.

Conclusions: The study highlights the various challenges faced by early career researchers, and STEM scientists at various positions in their careers during the COVID-19 restrictions in India.
The genome sequence of the Little Grey, Eudonia lacustrata (Panzer, 1804)
Authors: Boyes Douglas , Crowley Liam M. , Boyes Clare ,   University of Oxford and Wytham Woods Genome Acquisition Lab,   Darwin Tree of Life Barcoding collective,   Wellcome Sanger Institute Tree of Life programme,   Wellcome Sanger Institute Scientific Operations: DNA Pipelines collective,   Tree of Life Core Informatics collective,   Darwin Tree of Life Consortium
Published: July 2023

We present a genome assembly from an individual male Eudonia lacustrata (the Little Grey; Arthropoda; Insecta; Lepidoptera; Crambidae). The genome sequence is 699.5 megabases in span. Most of the assembly is scaffolded into 30 chromosomal pseudomolecules, including the Z sex chromosome. The mitochondrial genome has also been assembled and is 15.29 kilobases in length. Gene annotation of this assembly on Ensembl identified 21,652 protein coding genes.
Making Photographs in Language Archives Maximally Useful: Metadata Guidelines for Community and Academic Depositors
Authors: Chelliah Shobhana
Published: July 2023

Collections in language archives typically include photographs. The purpose of these photographs is to supplement linguistic information about materials, places, and people related to cultural activities that are being forgotten. Instruction on metadata creation for these photograph deposits must take into consideration the variety of depositors to and users of language archives. In addition to the use of existing controlled vocabularies, classification lists, or thesauri in metadata creation, we observe in metadata for photographs the need for open-ended descriptions of personal experience related to the objects, places, and things photographed.
A CARE and FAIR-Ready Distributed Access Control System for Human-Created Data
Authors: Sefton Peter , Sacal Bonequi Moises , Musgrave Simon , Fewster Jenny
Published: July 2023

The Language Data Commons of Australia (LDaCA) makes nationally significant language data available for academic and non-academic use, managing the data in a culturally, ethically, and legally appropriate manner guided by FAIR and CARE principles. Here, we describe the approach which we are taking to access control and a design for a distributed access control system which can look after the A-is-for-accessible in FAIR data while respecting the CARE principles. We also describe and demonstrate a pilot system based on that design, showing how data licenses that allow access by identified groups of people can be used by adding functionality, CILogon for non-institutional identification and REMS for managing access to resources, to the existing Australian Access Federation infrastructure.
Digitalization of revenue mobilization in an emerging economy: the new Institutional Theory perspective
Authors: Agyei-Ababio Nora , Ansong Eric , Assa-Agyei Kwame
Published: July 2023

This study sought to explore how the institutional environment comprising regulative, normative, and cognitive factors influences the use of technology in revenue mobilization in the public sector of an emerging economy. The study used the new institutional theory as a theoretical lens and a qualitative case study as a methodological stance. Data was collected from the agency in charge of revenue mobilization in the developing economy through interviews. The study established that regulative, normative and cognitive factors influence the digitalization of revenue mobilization. With regards to the regulative pillar, it was revealed that legislation for a revenue authority with a focus on digitalization, legislation for taxpayer identification and legislation for electronic transactions were laws that governed the use of the system and played essential roles in ensuring that the system was used effectively to fully realize its benefits. The cognitive pillar, on the other hand, revealed some challenges faced with the implementation and use of the digital system. The study contributes to the literature on the digitalization of revenue mobilization, which has arguably seen very few studies conducted in Africa, especially in Ghana, hence calling for more future studies on the use of e-revenue systems in developing economies.
Strategic Implications of Online Retail Platforms’ Membership-Based Free Shipping Programs
Authors: Sun Geng , Cavusoglu Huseyin , Raghunathan Srinivasan
Published: July 2023

Product shipping is an indispensable but costly operation in online retailing. Although several initiatives are underway to reduce the shipping cost, an important innovation is the membership-based free shipping (MFS) program, in which a retail platform that allows third-party sellers to sell their products for a commission bears the shipping costs for purchases made by members who have paid an up-front fee. We identify several strategic impacts of MFS programs that are the key drivers to their success from the platform’s or other stakeholders’ perspectives. For example, we find that the membership fee collected by the platform does not cover its shipping cost, which suggests the MFS program benefits members and hurts the platform if the program is evaluated based on direct operational considerations only. However, we also show that the MFS program actually benefits the platform and hurts consumers when the shipping cost is less than a threshold. Moreover, the platform’s benefit from the MFS program follows an inverted U shape with respect to the shipping cost, suggesting that the program enjoys the greatest benefit for products with a moderate shipping cost. Even though the MFS program enhances the overall consumer demand and consumption, it could hurt society because the MFS program stimulates demand from consumers who have a low consumption utility relative to the shipping cost. Our results demonstrate that the MFS program is not just a shipping cost-transfer mechanism; rather, it is a strategic initiative by online retail platforms to exploit the need for product shipping to their advantage.

History: Ram Gopal, Senior Editor; Yuliang Yao, Associate Editor.

Supplemental Material: The online supplement is available at https://doi.org/10.1287/isre.2022.0208 .
Histórias fora de quadro: trajetórias de mulheres no campo do design
Authors: Almeida Ana Julia Melo
Published: July 2023

O intuito principal deste artigo é refletir sobre as relações sociais de gênero mobilizadas nas práticas historiográficas, por meio das trajetórias profissionais de Klara Hartoch (1901-data desconhecida) e Marta Erps-Breuer (1902-1977). Como método, analisaremos os dois trajetos em paralelo, em busca de presenças, ausências e apagamentos em torno da documentação de seus percursos de vida e de trabalho. Para isso, por meio das teorias feministas e dos estudos de gênero, deslocamos o olhar das invisibilidades, de uma ausência de documentação, para uma existência fora de quadro. Buscamos, assim, compreender uma dinâmica de representação entre o que é oculto e o que é visível nas práticas historiográficas.
Fernanda Yamamoto e Yuba: reflexões iniciais sobre a coleção Yama (2021-2022)
Authors: Matsuda Marco Takashi , Corrêa Ronaldo De Oliveira
Published: July 2023

O presente trabalho busca evidenciar a relação entre design e cultura material sob uma perspectiva da raça/etnia, a partir da aproximação preliminar do trabalho do atelier Fernanda Yamamoto em sua coleção Yama (2021), realizada em parceria com a comunidade Yuba, apresentada na São Paulo Fashion Week (2021). Com a contextualização do projeto, apresentamos as peças que compuseram o desfile e a exposição homônima no Centro Cultural de São Paulo (2021). Para analisar essa relação dos artefatos com os membros de Yuba, trabalhamos o conceito de identidade em Tomaz Tadeu da Silva (2000), os processo de agenciamento elucidados por Alfred Gell (2016), Els Lagrou (2013), com a intenção em discutir os sentidos que determinados artefatos oriundos de Yuba assumem em seu trajeto comunidade-desfile-exposição, e que relações de memória e esquecimento (BOSI, 1979) estes estabelecem com os membros da comunidade, pensando nas potencialidades que a colaboração entre Fernanda Yamamoto e Yuba nos ajudam a pensar o conceito de identidade yubense articulado às materialidades.
ANÁLISE DOS ÍNDICES DE VEGETAÇÃO PARA MONITORAMENTO REMOTO DAS CAATINGAS
Authors: Lopes Rodrigo José de Carvalho , Santos Antonio Marcos dos , Lima Júnior Claudemiro de
Published: July 2023

Nos últimos anos o número de estudos que empregam índices de vegetação na identificação e extração de informações da cobertura vegetal das caatingas vem crescendo, o que desperta atenção quanto ao potencial de cada índice. Nesse contexto, o objetivo deste artigo foi analisar o potencial de índices de vegetação na identificação e caracterização da estrutura da cobertura vegetal das caatingas, tendo como área piloto de estudo o município de Petrolina, Pernambuco. Para desenvolvimento da pesquisa, inicialmente foi desenvolvido um mapeamento padrão com cinco tipologias de uso das terras validado posteriormente com dados de campo. Em seguida, foram processados 18 índices de vegetação sobre uma imagem gerada pelo sensor OLI (Operational Terra Imager) acoplado ao satélite LandSat 8. Os valores dos índices foram comparados com o mapa de usos e ocupação das terras para verificar a eficiência de cada um. Os resultados indicam que cada índice analisado apresentaram eficácias diferenciadas na identificação dos alvos presentes em campo. Sendo que quanto mais densa a cobertura vegetal maiores os acertos dos índices, sendo assim, o principal problema dos índices aplicados as caatingas foram na identificação de áreas com cobertura vegetal esparsa e solo exposto. Nesse contexto, faz-se necessário cuidados na seleção de índices de vegetação para estudos em ambientes semiáridos dando preferência para aqueles que apresentem em sua estrutura parâmetros de separação da interferência dos solos sobre a resposta espectral dos ambientes mapeados.
PAISAGENS ANTROPOGÊNICAS NA AMAZÔNIA CENTRO-ORIENTAL: uma análise a partir da microbacia do rio Tucuruí, bacia Jauruçu, baixo rio Xingu – Pará
Authors: De Freitas Jaylim Reis , Alvarez Wellington De Pinho , Veloso Gabriel Alves , Herrera José Antônio
Published: July 2023

A Amazônia no seu processo de integração econômico-político-social, passou por grandes transformações, especialmente nas paisagens onde a intensidade do Trabalho está relacionado a implantação de atividades econômicas relacionadas à estratégia de desenvolvimento econômico proposto pelo governo federal a partir de 1970. Neste sentido, o objetivo deste artigo é classificar as diferentes unidades de paisagem antropogênicas desenvolvidas na microbacia do rio Tucuruí, bacia do Jaurucu baixo rio Xingu a partir do desenvolvimento de atividades econômicas de nexo com a construção da rodovia Transamazônica. As atividades desenvolvidas se dividiram em 4 (quatro) momentos: Pesquisa bibliográfica e documental sobre o processo de ocupação e desenvolvimento de atividades econômicas na transamazônica, seguida por pesquisa de campo e entrevistas com colonos, processamento e análise de imagens orbitais em sistema de informações geográficas Qgis 3.10, para a identificação de diferentes fisionomias de paisagens naturais e alteradas pelo Trabalho. Mediante o exposto, a microbacia do rio Tucuruí hoje é composta por diferentes fisionomias de paisagens antrópicas que se subdividem em cinco unidades de paisagens: Pediplanos ocupados por remanescentes florestais; Pediplanos ocupados capoeiras e capoeirões; Pediplanos ocupados por pastagens antrópicas extensivas; Vales drenados assoreados, ocupados por estratos herbáceos – arbustivos; Vales drenados assoreados por vertentes colapsadas.
O Ciclo Recente de Investimentos em Transporte Urbano e o Desafio da Urbanização Desigual: o caso da Região Metropolitana do Rio de Janeiro (RMRJ)
Authors: Da Silva Nina Aureliano Apparicio , Siqueira Hipólita
Published: July 2023

A retomada do papel do Estado em infraestrutura urbana nas últimas décadas repercutiu em um grande ciclo de investimentos em infraestrutura de transporte no Brasil, e, particularmente, na RMRJ, apoiado sobretudo por recursos federais. O objetivo deste artigo é analisar esse ciclo de investimentos, destacando a distribuição dos recursos financeiros e sua espacialização na RMRJ. A ausência de prioridade ao desafio histórico das desigualdades socioespaciais teve como resultado a concentração dos investimentos na capital fluminense o que, por sua vez, acentuou o quadro de urbanização desigual e excludente.
ANÁLISE TECTÔNICA NA REDE DE DRENAGEM DA MANTIQUEIRA MERIDIONAL E SETENTRIONAL (MG)
Authors: Silva Felipe Pacheco
Published: July 2023

A abordagem dessa pesquisa tem como base as propostas metodológicas em geomorfologia tectônica, presente nos trabalhos desenvolvidos por Keller e Pinter (1996). A geomorfologia tectônica busca elucidar aspectos da história geológica das paisagens terrestres e como os processos tectônicos exerceram influência na emolduração do relevo. Diante disso, o objetivo dessa pesquisa é identificar os esforços tectônicos na rede de drenagem da Serra da Mantiqueira e avaliar as implicações neotectônicas na rede de drenagem da Mantiqueira Meridional e Setentrional. Selecionou-se a bacia do rio Caparaó (Mantiqueira Setentrional) e a bacia do rio Bananal (Mantiqueira Meridional) para investigação e aplicação de três índices geomorfométricos:  Fator de Simetria Transverso – T (COX, 1994), Integral e Curva Hipsométrica – IH (KELLER e PINTER, 1996) e Assimetria de Bacia de Drenagem – AF (HARE e GARDNER, 1985). De modo geral, as bacias selecionadas apresentam uma distinta configuração da rede de drenagem, sendo constatado uma menor assimetria na bacia do rio Caparaó, a qual apresentou deformações pontuais na rede de drenagem para o índice T; em contrapartida, a bacia hidrográfica do rio Bananal apresentou um conjunto de anomalias e assimetrias mais contundentes a um quadro de deformações mais recentes, reunindo elevados valores de T e Af. Neste contexto, foi possível registrar como a drenagem do segmento Meridional da Serra da Mantiqueira possuí fortes elos com os esforços oriundos da reativação tectônica mesozoico-cenozoica.
RECONSTITUIÇÃO PALEOAMBIENTAL DA BACIA DO RIO GRANDE (BA), POR MEIO DA ANÁLISE DE FITÓLITOS E LUMINESCÊNCIA OPTICAMENTE ESTIMULADA (LOE)
Authors: Machado David Oldack Barcelos Ferreira , Perez Filho Archimedes , Coe Heloisa Helena Gomes , Chueng Karina Ferreira , Prebianca Mateus Moriconi , Fumiya Marcel Hideyuki
Published: July 2023

A Bacia Hidrográfica do Rio Grande (BRG) localiza-se no oeste do Estado da Bahia, sendo caracterizada principalmente pelo contraste altimétrico de cuestas e áreas de topografia suave, como também por se configurar como uma área de transição entre os biomas Cerrado e Caatinga. Este trabalho tem como objetivo compreender a dinâmica e transformação da paisagem no médio curso da BRG durante o Quaternário, tendo como base a investigação de coberturas superficiais de terraços fluviais, inferindo variações da vegetação e dos processos geomorfológicos associados a episódios de pulsações climáticas. A metodologia consistiu numa análise integrada envolvendo fitólitos; análises granulométricas e cronologia por datações por Luminescência Opticamente Estimulada. Não foram registradas grandes mudanças na cobertura vegetal para a BRG no Holoceno, com predomínio de vegetação aberta com pontual ocorrência de remanescentes florestais. No entanto, foi possível observar pequenas variações que identificaram períodos relativamente mais secos no Pleistoceno Superior e no Holoceno Médio, mais úmidos por volta de 1.430 anos AP, e variações de umidade nos últimos 420 anos.
VALORIZAÇÃO DA PEDODIVERSIDADE: panorama dos estudos a partir da análise bibliométrica
Authors: Souza Isabella De Carvalho , Gomes Maria Carolina Villaça , Valdatti Jairo
Published: July 2023

A pedodiversidade corresponde a uma dimensão do conceito de geodiversidade, cujo objetivo é identificar e valorizar a diversidade pedológica de uma determinada unidade espacial. Apesar dos estudos sobre geodiversidade existirem desde a década de 1980, foi somente a partir do início dos anos 2000 que pesquisadores passaram a dar mais atenção à pedodiversidade, considerando-a como um modo de revelar as riquezas de solos presentes em uma paisagem. Este trabalho tem por objetivo realizar análise bibliométrica e revisão de conteúdo sobre pedodiversidade, visando identificar a produção científica nacional e internacional acerca do tema inserido no âmbito da geodiversidade, compreendendo quais as principais discussões realizadas sobre o tema e tendências atuais de pesquisa. Para tanto, a metodologia se divide em duas etapas: (i) levantamento bibliométrico pela plataforma de periódicos Scopus, seguido pela interpretação dos dados e; (ii) revisão de conteúdo dos documentos encontrados. Os resultados mostraram um número reduzido de publicações sobre pedodiversidade associados à geodiversidade. Entretanto, houve um aumento gradativo de produção científica nos últimos anos, indicando um crescente interesse dos pesquisadores em compreender a relação solo-paisagem através da pedodiversidade. Muitas pesquisas se restringem ao campo teórico, demonstrando um esforço na padronização de metodologias e conceitos da pedodiversidade. Ao passo que as pesquisas mais aplicadas, denotam um foco biótico e exploratório.
AMAZÔNIA: um ensaio sobre variabilidade socioespacial e sobre indicadores potenciais ao Antropoceno
Authors: Ponte Franciney Carvalho da , Szlafsztein Claudio Fabian
Published: July 2023

A expansão do Ser Humano na Amazônia brasileira tem produzido uma gama de transformações antropogênicas no âmbito de seus ambientes naturais, as quais, considerando a amplitude têmporo-espacial de suas ocorrências, têm despertado interesses proeminentes, quanto à origem, à diversidade e à durabilidade de seus efeitos. O trabalho tem, como objetivo, realizar o mapeamento de indícios antropogênicos e a proposição de indicadores, passíveis de associação a preceitos do Antropoceno, ao longo do Holoceno. A pesquisa partiu da identificação e da espacialização de um conjunto de evidências arqueoecológicas, sob abordagens retrospectiva, holística e integradora de variáveis, relacionadas a aspectos naturais, antrópicos e socioespaciais, com vistas à mensuração e à periodização dos padrões de uso dos recursos naturais, considerando, como substrato de análise espacial, os Domínios Naturais da Amazônia Brasileira (DNAB). O estudo revelou uma dinâmica socioespacial ampla e diversa, com um nível antropogênico significativo de aproximadamente 70%, representado por sistemas humanizados e por paisagens seminaturais; estas, muitas vezes, embutidas em ecossistemas aparentemente naturais.
“Tenho casa na cidade! Mas, vivo e trabalho na roça”: vivências, trabalho e propriedade como modos de vida de agricultores na Zona da Mata Mineira
Authors: De Faria Guélmer Júnior Almeida , De Carvalho Fiúza Ana Louise
Published: July 2023

Na Zona da Mata Mineira, o último censo agropecuário revelou detalhes peculiares dos produtores rurais. Nos municípios com menos de 10.000 habitantes, os resultados mostraram maiores proporções de pessoas vivendo em cidades e com negócios rurais. Com base em pesquisa e análise bibliográfica combinado com dados secundários dos Censos Agropecuários de 2006 e 2017, este artigo explora o uso de casas rurais e urbanas como estratégia de manutenção e gestão da propriedade nas atividades produtivas. Os últimos resultados da transmutação do rural evidenciam que a vida rural descentralizou e a segregação entre o trabalho e a casa mudou a vida cotidiana nas áreas rurais.
Oliveira Vianna: um nostálgico do Império do Brasil
Authors: Fertig André Atila
Published: July 2023

Este artigo enfoca Francisco José de Oliveira Vianna e sua interpretação do Império do Brasil. Nossa questão principal é: qual a representação que o citado historiador produziu sobre diversas facetas do período monárquico. Para cumprir tal objetivo destacaremos como Oliveira Vianna abordou alguns fenômenos históricos do período como a independência do Brasil, o papel histórico de D. Pedro II, a militarização da política nos últimos anos do Império e o contexto e as razões da queda da monarquia. Partimos da análise da obra “O Ocaso do Império”, mas também nos apoiamos em outros textos historiográficos do intelectual em questão.
A mística na formação via alternância: a experiência da Escola Família Agrícola Rosalvo da Rocha Rodrigues - EFAR
Authors: Pereira Alves Ricardo
Published: July 2023

O objetivo do artigo é compreender as possibilidades da mística como instrumento pedagógico da formação via alternância realizada na EFAR. Neste sentido, partimos nosso estudo da seguinte problemática: O que é mística? Quais os sentidos e significados deste instrumento na formação realizada na EFAR. O processo de análise ocorreu a partir de revisão bibliográfica, análise de imagens de experiências da utilização deste instrumento no cotidiano da escola e entrevistas. Para tanto, foram entrevistados seis egressos e três representantes que participaram do processo de criação e constituição da escola. Os resultados apontam que a mística é um instrumento pedagógico que contribui na formação integral do jovem, na sua identidade enquanto jovem camponês, na capacidade crítica, consciente e reflexiva, perante os movimentos intencionais do capitalismo na sociedade e das consequências desse processo. Conclui-se que a mística contribui na formação de preparação para a vida, na utopia, em transformar o que se sonha em uma ação consciente.
A metáfora das redes na formação docente: enredando e (redes)cobrindo
Authors: Pinheiro Laís Lemos Silva Novo , Fontoura Helena Amaral da
Published: July 2023

O presente artigo tem por objetivo desenvolver a ideia, até então embrionária, escrita sob a forma de um resumo expandido a partir da metáfora das redes  para o XI Seminário Internacional As Redes Educativas e as Tecnologias – Docentes na resistência e na criação, evento este popularmente chamado de Redes. Assim, a relação estabelecida entre a metáfora das redes e o evento Redes (2022) justificou o jogo de palavras que intitulou o referido resumo expandido: “Redes no Redes: enredando metáforas de formação docente” e que, agora, segue se entrelaçando nas linhas do presente texto. A essência do primeiro escrito permanece e ganha novos contornos, despertando a compreensão dos processos de formação docente pelo viés metafórico, adentrando o campo das narrativas e colaborando para construções semânticas na área educacional. Para tanto, enredada nos fios teóricos de Josso, Gatti, Nóvoa, Autora 1, Autora 2, Huberman e Marcelo, esta narrativa pretende retomar e dar continuidade ao estudo metafórico já iniciado, além de inspirar e gerar novas conexões acerca dos processos de formação docente.
Educação e surdez: a língua escrita como instrumento de exclusão social
Authors: Lima Ezer Wellington Gomes
Published: July 2023

O texto aqui desenhado ressalta a importância de se pensar em uma educação que esteja totalmente imersa nas diferentes vivências do espaço escolar, com destaque para os inúmeros aspectos relacionados à representação da escrita. Por meio de um estudo teórico-conceitual, com caráter exploratório, por centrar-se na (re)construção de conceitos, ideias e ideologias necessários ao aprimoramento dos fundamentos teóricos já desenvolvidos sobre a temática.  Deste modo, optou-se por autores que contribuíram diretamente para o desdobramento do tema citado, quais sejam: Senna (2010), Auroux (1992), Delacampagne (1995), dentre outros. Objetivou-se, então, avançar na análise de aspectos relativos às práticas escolares, com ênfase no processo de aquisição da língua escrita por educandos surdos. Tal investigação se justifica pela necessidade de analisar questões de ordem linguística, pois inclui também aspectos socioculturais. Entretanto, a predominância da Língua Portuguesa como instrumento de poder e canal único de conhecimento ultrapassa e se contrapõe às determinações legais que fortalecem o reconhecimento da língua de sinais em âmbito nacional. Os resultados deste estudo sinalizam que, no contexto escolar, muitos alunos surdos são prejudicados pela falta de estímulos adequados ao seu potencial cognitivo, sócio afetivo, linguístico e político-cultural, passando a ter perdas consideráveis no desenvolvimento da aprendizagem. Diante destas constatações, destaca-se a necessidade de se (re)pensar os métodos e/ou estratégias mais adequadas ao ensino da gramática da Língua Portuguesa para surdos, levando em conta os desafios e possiblidades de cada aprendiz.