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Predicting song popularity based on Spotify’s audio features:insights from the Indonesian streaming users

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Journal of Management Analytics 2023年第4期10卷 693-709页

作者： Harriman samuel Saragih Department of Business Innovation Monash UniversityBSD CityIndonesia

Using regression and classification machine learning algorithms,this study explores audio features on Spotify that contribute to the popularity of songs streamed in Indonesia,and then evaluates the feature importance for *** publicly accessible Kaggle data consists of 92,755 rows and 20 *** multiple model comparisons for regression and classification,this study identifies Extra Trees Regressor and Random Forest Classifier as the two predictive approaches with the highest *** study contributes to the scientific literature on hit songs by examining the influence of audio features on a song’s popularity using both classification and regression machine learning methods,with an emphasis on Indonesia based on consumer culture theory.

关键词： popularity audio features Spotify machine learning consumer culture

Volcanic Risk Perception and Coping Strategies from Mounts Cameroon and Nyiragongo Eruptions, Central Africa: A Comparative Analysis

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Journal of Geoscience and Environment Protection 2024年第6期12卷 161-189页

作者： Mabel N. Wantim Innocent Bradriyo Asong F. Zisuh Louis M. Balgawa Mero Yannah Katcho Karume Nde-Fon Peter Bih Amban Nchini L. Wayih Emmanuel V. Yenshu samuel N. Ayonghe Unit of Disaster Risk Management Department of Environmental Science University of Buea Buea Cameroon Observatoire Volcanologique de Goma (OVG) Goma Democratic Republic of the Congo Institute of Geological and Mining Research (IRGM) Yaounde Cameroon Faculty of Health Sciences University of Buea Buea Cameroon Faculty of Social and Management Sciences University of Buea Buea Cameroon

Approximately 2,000,000 people are exposed to volcanic risks in communities situated at the flanks of Mounts Cameroon (MC) and Nyiragongo (MN) volcanoes in Central Africa. This study therefore sought to investigate risk perception from four previous eruptions of MC, namely the 1959, 1982, 1999, and 2000 eruptions;and two previous eruptions of MN: 1977 and 2002. The study was initiated with co-design workshops held with major stakeholders in the cities of Buea and Goma at the flanks of MC and MN, respectively, in 2017, to develop the research objectives for the study. A non-random questionnaire survey was later conducted within 14 and 15 communities in Buea and Goma respectively, on the effects, perceived risks, and coping strategies for the chosen eruptions. Three age groups (18 - 30, 31 - 45 and >45 years) and gender (male and female) were considered. The population at the flanks of both volcanoes cited scientific and indigenous factors to be responsible for eruptions from these volcanoes. At MC and MN, ≥45% of the sampled participants (with a higher female population) perceived that the sampled eruptions posed a very high risk to the population. In terms of the effects, the age group of 18 - 30 was the least knowledgeable. In terms of direct effect on persons, over 90% of participants at MC and MN attested that they were overcome by fear/panic. On measures to cope with any likely eruption, the following order was established at the flanks of both volcanoes: sensitization of population, use of religious (prayers) and of traditional/indigenous strategies. In terms of future coping strategies, while the males at MC maintained sensitization as the favourite option, 62% of the males at MN opted for traditional/indigenous strategies. The female population at both MC and MN showed a higher preference for religious strategies like prayers.

关键词： Risk Perception Mount Cameroon Mount Nyiragongo Indigenous Buea Goma

Institutional Capacity and the Roles of Key Actors in Fire Disaster Risk Reduction: The Case of Ibadan, Nigeria

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International Journal of Disaster Risk Science 2022年第5期13卷 716-728页

作者： Olusegun Joseph Falola samuel Babatunde Agbola Department of Urban and Regional Planning Lead City UniversityIbadan 200255Oyo StateNigeria Department of Urban and Regional Planning University of IbadanIbadan 200284Oyo StateNigeria

Inefficient and ineffective fire management practices are common to most urban areas of developing *** cities are typical examples of high vulnerability and low preparedness level for fire *** study examined the institutional framework for fire disaster risk reduction(FDRR) and explored the roles of key actors in fire disaster preparedness in Ibadan,a large traditional city in *** study was anchored on the concept of urban governance.A case study research design was adopted using primary and secondary *** data were obtained through field observation aided by a structured checklist and key informant *** were conducted on key officials of the major organs for FDRR-Oyo State Fire Service(OSFS) and Oyo State Emergency Management Agency(OYSEMA).The study identified a disjointed and fragmented approach to fire *** relating to fire risk reduction and disaster recovery were domiciled under the OYSEMA,while emergency response to fire disasters was the prerogative of the *** results show that only five out of 11 local government areas had public fire stations;only three fire stations had an on-site water supply;three fire stations lacked firefighting vehicles;and distribution of fire stations and facilities was *** fire stations responded to 80% of all fire cases in 12 *** study concluded that the institutional structure and resources for fire risk reduction was more empowered to respond to fire disaster,rather than facilitating preparedness capacity to reduce disaster risk.

关键词： Disaster preparedness Disaster risk Fire disaster Fire service Fire station

The rhizosphere microbial complex in plant health:A review of interaction dynamics

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Journal of Integrative Agriculture 2022年第8期21卷 2168-2182页

作者： Oluwaseyi samuel OLANREWAJU Olubukola Oluranti BABALOLA Food Security and Safety Focus Area Faculty of Natural and Agricultural SciencesNorth-West UniversityMmabatho 2735South Africa

Climate change,urbanization,and population increase limit food *** sustain human existence,there is the need to increase food and agricultural production to mitigate the impact of these *** have been working for years on ways to increase food *** plant breeding techniques to soil science,scientists have made tremendous *** rhizobiome has been proven to be important to crop production,and the impact of the rhizobiome on plant health cannot be *** rich in diverse complex microbial interactions,the rhizosphere has become a major force in recent plant growth promotion *** upsurge in next-generation sequencing applications with the various“omics”technologies is helping to unearth information relating to rhizosphere impact on plant *** the complex interactions between and across microbial species present in the rhizosphere is important to further enhance our understanding of their mechanistic and mutualistic *** from this can be used in rhizosphere biome engineering for improved plant growth and yield in the face of the various biotic and abiotic challenges.

关键词： below-ground interactions climate change plant growth promotion plant microbiome root exudation

Critical review of the impact of cover crops on soil properties

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International Soil and Water Conservation Research 2022年第3期10卷 343-354页

作者： Komlan Koudahe samuel CAllen Koffi Djaman Biological and Agricultural Engineering Department Kansas State University1016 Seaton Hall920 N.Martin Luther King Jr.DriveManhattanKS66506USA Department of Plant and Environmental Sciences New Mexico State UniversityAgricultural Science Center at FarmingtonP.O.Box 1018FarmingtonNM87499USA

Grasses as well as leguminous and non-leguminous broadleaves are the major categories of commonly grown cover crops *** review focuses on the contribution of cover crops to soil *** review first considers the single and mixed cover crops and shows that grass species are desirable for their decay and ability to provide substantial soil cover,broadleaf species are used for their quick decomposition and capacity of releasing residues into the soil,while the leguminous species are used for their ability to fix atmospheric ***,the impacts of cover crops on soil health are *** cover crops into conventional cropping systems may reduce soil bulk density,improve soil structure and hydraulic properties to facilitate increased water infiltration and *** residue additions from cover crops may enhance soil organic C and N accretion as well as increase availability of P,K,Ca,Fe and Mg in some soil types under certain climatic ***,cover crops may provide a better condition for microbial activity,abundance,and ***,the review shows that through proper management,cover crops may be utilized as an essential component of soil conservation practices for enhanced soil ***,further investigation is necessary to determine cover crop effects in additional cropping systems and climatic zones as well as the long-term effects of cover crops on soil properties,subsequent crop yield,and overall cropping system *** review is an important source of information for crop growers,crop management institutions,universities,and crop consultants for sustainable agricultural production.

关键词： Cover crops Soil properties Grasses Leguminous

One ring is sufficient to inhibit α-synuclein aggregation

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Neural Regeneration Research 2022年第3期17卷 508-511页

作者： samuel Peña-Díaz Salvador Ventura Institut de Biotecnologia i Biomedicina Universitat Autònoma de BarcelonaBellaterraSpain Departament de Bioquímica i Biologia Molecular Universitat Autònoma de BarcelonaBellaterraSpain InstitucióCatalana de Recerca i Estudis Avançats(ICREA) BarcelonaSpain

Parkinson's disease,the second most prevalent neurodegenerative disorder worldwide,is characterized by a progressive loss of dopaminergic neurons in substantia nigra pars compacta,causing motor *** disorder's main hallmark is the formation of intraneuronal protein inclusions,named Lewy bodies and *** major component of these arrangements is α-synuclein,an intrinsically disordered and soluble protein that,in pathological conditions,can form toxic and cell-to-cell transmissible amyloid *** α-synuclein aggregation has attracted significant effort in the search for a disease-modifying therapy for Parkinson's *** molecules like Synu Clean-D,epigallocatechin gallate,trodusquemine,or anle138 b exemplify this therapeutic ***,we describe a subset of compounds containing a single aromatic ring,like dopamine,ZPDm,gallic acid,or entacapone,which act as molecular chaperones against α-synuclein *** simplicity of their structures contrasts with the complexity of the aggregation process,yet the block efficiently α-synuclein assembly into amyloid fibrils,in many cases,redirecting the reaction towards the formation of non-toxic off-pathway ***,some of these compounds can disentangle mature α-synuclein amyloid *** simple structures allow structure-activity relationship analysis to elucidate the role of different functional groups in the inhibition of α-synuclein aggregation and fibril dismantling,making them informative lead scaffolds for the rational development of efficient drugs.

关键词： amyloid aromatic rings dopamine inhibition neurodegeneration oligomers Parkinson's disease protein aggregation α-synuclein

Regulation ofα-cell glucagon secretion:The role of second messengers

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Chronic Diseases and Translational Medicine 2022年第1期8卷 7-18页

作者： samuel Acreman Quan Zhang Oxford Centre for Diabetes Endocrinology and MetabolismRadcliffe Department of MedicineUniversity of OxfordOxfordOX37LEUK Institute of Neuroscience and Physiology Department of PhysiologyMetabolic Research UnitUniversity of GoteborgBox 430S-40530GoteborgSweden

Glucagon is a potent glucose-elevating hormone that is secreted by pancreaticα-*** well-controlled glucagon secretion plays an important role in maintaining systemic glucose homeostasis and preventing hypoglycaemia,it is increasingly apparent that defects in the regulation of glucagon secretion contribute to impaired counter-regulation and hyperglycaemia in *** has therefore been proposed that pharmacological interventions targeting glucagon secretion/signalling can have great potential in improving glycaemic control of patients with ***,despite decades of research,a consensus on the precise mechanisms of glucose regulation of glucagon secretion is yet to be *** messengers are a group of small intracellular molecules that relay extracellular signals to the intracellular signalling cascade,modulating cellular *** is a growing body of evidence that second messengers,such as cAMP and Ca^(2+),play critical roles inα-cell glucose-sensing and glucagon *** this review,we discuss the impact of second messengers onα-cell electrical activity,intracellular Ca^(2+)dynamics and cell *** highlight the possibility that the interaction between different second messengers may play a key role in the glucose-regulation of glucagon secretion.

关键词： glucagon pancreatic islet second messenger

A systematic literature review to explore sustainable energy development practices in Mozambique

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Clean Energy 2023年第6期7卷 1330-1343页

作者： samuel Aires Master Lazaro Vanessa Fathia Baba College of Civil Engineering Taiyuan University of TechnologyNo.79 West Street YingzeTaiyuan 030024ShanxiPR China College of Economics&Management Taiyuan University of TechnologyNo.79 West Street YingzeTaiyuan 030024ShanxiPR China

This study thoroughly evaluates sustainable energy practices in Mozambique,identifies suitable activities and suggests future re-search *** authors meticulously detail the research tasks undertaken to achieve the primary objective of the study,including organizing articles by publication year,journal and conference papers;identifying the most frequently cited articles;and recognizing countries that have made significant contributions to the concept of sustainable *** study highlights the most relevant sustainable energy development practices for Mozambique,identifies suitable activities and suggests future research *** rigorous analysis,six significant areas of sustainable energy development were identified,including renewable energy(RE)resources,environmental science,social sciences,computer science,management and accounting,and Earth and planetary *** study used Scopus as the selected multidisciplinary peer-reviewed citation database on 20 February 2023,resulting in 76 *** study has been conducted nationwide for several months and thoroughly investigates various resources such as hydro,wind,solar,biomass and geothermal *** achieves this by evaluating and characterizing the power generation potential of each RE resource and,in addition,identifying and examining numerous projects at the technical and economic feasibility level to promote the potential of projects and the advantages of RE for the sustainable development of *** findings indicate that for sustainable energy development in Mozambique,it is crucial to introduce more policies to support the effectiveness of RE systems while involving the private *** achieve this,measures such as reducing investment risks,guaranteeing investment returns and establishing a transparent regulatory framework are *** steps will attract substantial investments,resolve conflicts and motivate key stakeholders to actively participate in the p

关键词： developing countries Mozambique sustainable development renewable energy systematic literature review Scopus

Multiplex Rapid Test with Acceptable Diagnosis Performance as a Solution to Increase Diagnosis of Hepatitis B and C Viruses in Pregnant Women in an Area of High Prevalence of Both Hepatitis Viruses Associated with HIV

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Open Journal of Medical Microbiology 2024年第1期14卷 50-65页

作者： Catherine Boni-Cisse Nina Esther Onstira Ngoyi Hermione Dahlia Mossoro-Kpinde Noella Packo Rabi Senekian Hermann Ndoidet Koutou Coretha Bokia-Baguida Christelle Luce Bobossi-Gadia Arthur Simplice Sombot-Ndicky Daniel Yvon Gonessa Freddy samuel Ngbonga Konzapa Voulou Christian Diamant Mossoro-Kpinde Alassane OUATTARA National Center of Medical Oncology and Radiotherapy Abidjan Ivory Cost Department of Microbiology UFR of Medical Sciences University of Cocody Abidjan Ivory Cost Laboratory of Bacteriology-Virology of Teaching Hospital Center of Brazzaville Brazzaville Republic of Congo Faculty of Health Sciences Marien NGOUABI University Brazzaville Republic of Congo Department of Labor Medicine Service of HIV and STDs Control in the Workplace Bangui Central African Republic (CAR) Faculty of Health Sciences University of Bangui Bangui Central African Republic National Reference Center of Sexually Transmitted Diseases and Antiretroviral Therapy Bangui Central African Republic National Laboratory of Clinical Biology and Public Health Bangui Central African Republic Medicine Department District Hospital of Alindao Alindao Ouaka Prefecture Central African Republic Doctoral School of Sciences and Technology University of Bangui Bangui Central African Republic Coordination of Specialized Study of Clinical Biology University of Bangui Bangui Central African Republic Doctors without Borders Hospital Sica BanguiCRA Laboratory of Medical Analysis of Teaching Hospital Center Mother Elisabeth DOMITIEN of Bimbo Bimbo Central African Republic

Background and Objective: HIV, hepatitis B virus (HBV) and hepatitis C virus (HCV) are very widespread in the world, however, less than 20% of the people affected are diagnosed and treated. This study aimed to determine the prevalence of HIV, HCV and HBV co-infections in pregnant women at Bangui Community University Hospital and the cost of screening. Methods: A cross-sectional study involving consenting pregnant women who came for antenatal care was performed. HIV, HCV antibodies and HBV antigens were detected using Exacto Triplex? HIV/HCV/HBsAg rapid test, cross-validated by ELISA tests. Sociodemographic and professional data, the modes of transmission and prevention of HIV and both hepatitis viruses were collected in a standard sheet and analyzed using the Epi-Info software version 7. Results: Pregnant women aged 15 to 24 were the most affected (45.3%);high school girls (46.0%), and pregnant women living in cohabitation (65.3%) were the most represented. Twenty-five (16.7%) worked in the formal sector, 12.7% were unemployed housewives and the remainder in the informal sector. The prevalence of HIV, HBV, and HCV viruses was 11.8%, 21.9% and 22.2%, respectively. The prevalence of co-infections was 8.6% for HIV-HBV, 10.2% for HIV-HCV, 14.7% for HBV-HCV and 6.5% for HIV-HBV-HCV. All positive results and 10% of negative results by the rapid test were confirmed by ELISA tests. The serology of the three viruses costs 39,000 FCFA (60 Euros) by ELISA compared to 10,000 FCFA (15.00 Euros) with Exacto Triplex? HIV/HCV/AgHBs (BioSynex, Strasbourg, France). Conclusion: The low level of education and awareness of hepatitis are barriers to development and indicate the importance of improving the literacy rate of women in the Central African Republic (CAR). Likewise, the high prevalence of the three viruses shows the need for the urgent establishment of a national program to combat viral hepatitis in the CAR.

关键词： HIV-HCV-HBV Co-Infection Multiplex Immunochromatographic Rapid Test Central Africa Serology Test Cost Diagnostic Accessibility