bluuebunny/crossref_metadata_2025 huggingface dataset:
PERFIL EPIDEMIOLÓGICO DAS INTERNAÇÕES POR FEBRE HEMORRÁGICA DA DENGUE NO NORDESTE BRASILEIRO
Authors: Alice Soares de Medeiros Isabela , Rodrigues Destefani Isabella , Januário de Lima Leandro , do Carmo Andrade Duarte de Farias Maria
Published: September 2020

Objetivo: Identificar o perfil epidemiológico das internações por febre hemorrágica devido ao vírus da dengue no Nordeste brasileiro entre 2010 e 2019. Método: Trata-se de um estudo descritivo, retrospectivo, com dados secundários obtidos do Sistema de Informações Hospitalares do Sistema Único de Saúde (SIH/SUS). Foram analisadas as variáveis: número de internações, número de óbitos, unidade da Federação, sexo, cor/raça e faixas etárias. Os dados obtidos foram analisados no software IBM SPSS Statistics 20. Resultados: As internações no Nordeste representaram 34,2% do total de internações em todo o Brasil (n= 24.488). O pico de casos se deu em 2010-11, quando se estabeleceu uma tendência de queda até 2017, quando a curva se inverteu e retornou o crescimento. Quanto ao desfecho, 3,64% morreram durante a internação. Pernambuco teve a maior taxa de prevalência no início da série temporal com Sergipe no outro oposto. Em 2019, o estado de Sergipe tornou-se o estado com a maior taxa de prevalência e o Ceará no extremo oposto. Crianças entre 5 a 9 anos (20,9%), pacientes de cor parda (39%) e mulheres (51%) foram grupos mais prevalentes. Conclusão: A morbidade hospitalar por febre hemorrágica da dengue apresentou um período de queda de oito anos (2010-2017), mas apresenta tendência de crescimento nos últimos anos.

Palavras chave: Dengue. Dengue Grave. Epidemiologia. Hospitalização. Perfil de Saúde.
Participatory Action Planning to Address the Opioid Crisis in a Rural Virginia Community Using the SEED Method
Authors: Zimmerman Emily B. , Rafie Carlin L. , Moser Dawn E. , Hargrove Angelina , Noe Toni , Adams Mills Courtnaye
Published: September 2020

The SEED Method is a multi-stakeholder approach that was created to involve diverse stakeholders in the development and prioritization of research questions using community-based participatory research (CBPR) principles. Here we describe an adaptation of the SEED Method that focuses on developing and prioritizing strategies for addressing a health problem and bringing stakeholders together to develop and implement community action plans based on those strategies. We describe steps for implementing the SEED Method for community action planning and the results of a case study in a rural Virginia community with high opioid prescription and mortality rates. A participatory research team worked with three groups of Topic stakeholders to gather data, develop conceptual models, and create and prioritize strategies for reducing prescription and non-prescription opioid misuse and overdoses. Each group came up with 19 to 25 strategies and prioritized their top five, which included actions, services or programs, strategies, policies, and system changes. Attendees at community action planning meetings reviewed the 15 prioritized strategies, proposed three additional strategies, and prioritized their top choices. Community stakeholders started four work groups to implement the selected strategies in collaboration with the research team.
Blockchain and COVID-19 Pandemic: Applications and Challenges
Authors: Ahmad Raja Wasim , Salah Khaled , Jayaraman Raja , Yaqoob Ibrar , Ellahham Samer , Omar Mohammed
Published: September 2020

The year 2020 has witnessed the emergence of coronavirus disease (COVID-19) that has rapidly spread and adversely affected the global economy, health, and human lives. The COVID-19 pandemic has exposed the limitations of existing healthcare systems regarding its inadequacy to timely and efficiently handle public health emergencies. A large portion of today's healthcare systems are centralized and fall short in providing necessary information security and privacy, data immutability, transparency, and traceability features to detect frauds related to COVID-19 vaccination certification, anti-body testing, and medical supplies. Blockchain technology can assist to combat the COVID-19 pandemic by assuring safe and reliable medical supplies, accurate identification of virus hot spots, and establishing data provenance to verify the genuine personal protective equipment that is decentralized, trustworthy, traceable, and transparent. In this paper, we discuss the potential blockchain applications for the COVID-19 pandemic. We present the high-level design of three blockchain-based systems to enable the governments and medical professionals to efficiently handle health emergencies caused by COVID-19. We discuss the important ongoing blockchain-based research projects to demonstrate the adoption of blockchain technology for the COVID-19. Finally, we identify and discuss future research challenges along with their key causes and guidelines.
Short-term Time Series Forecasting of Concrete Sewer Pipe Surface Temperature
Authors: Thiyagarajan Karthick , kodagoda sarath , Ulapane Nalika
Published: September 2020

Microbial corrosion is considered the main reason
for multi-billion dollar sewer asset degradation. Sewer pipe
surface temperature is a vital parameter for predicting the
micro-biologically induced concrete corrosion. Due to this
important measure, a surface temperature sensor suite was
recently developed and tested in an aggressive sewer environment. The sensors can fail and they may also put offline
during the period of scheduled maintenance. In such situations,
time series forecasting of sensor data can be an alternative
measure for the operators managing the sewer network. In
this regard, this paper focuses on the short-term forecasting
of sensor measurements. The evaluation was carried out by
forecasting the sensor measurements for different time periods
and evaluated with different forecasting models. The ETS model
leads to high short-term forecasting accuracy and the ARIMA
model leads to high long-term forecasting accuracy. The models
were evaluated on real data captured in a Sydney sewer
Spam Review Detection:A Systematic Literature Review
Authors: Farooq Muhammad Shoaib
Published: September 2020

In this era of technology, people rely on online posted reviews before buying any product. These reviews are very important for both the consumers and people. Consumers and people use this information for decision making while buying products or investing money in any product. This has inclined the spammers to generate spam or fake reviews so that they can recommend their products and beat the competitors. Spammers have developed many systems to generate the bulk of spam reviews within hours. Many techniques, strategies have been designed and recommended to resolve the issue of spam reviews. In this paper, a complete review of existing techniques and strategies for detecting spam review is discussed. Apart from reviewing the state-of-the-art research studies on spam review detection, a taxonomy on techniques of machine learning for spam review detection has been proposed. Moreover, its focus on research gaps and future recommendations for spam review identification.
Hubungan Tingkat Pengetahuan dan Sikap tentang Kejadian Ikutan Pasca Imunisasi dengan Kepatuhan Ibu dalam Memberikan Imunisasi DPT-HB-Hib di Wilayah Kerja Puskesmas Lubuk Buaya Kota Padang
Authors: Rahmawati Lisa , Ningsih Mahdalena Prihatin
Published: September 2020

Based on the health profile of Indonesia in 2016, the number of cases of diphtheria in 2016 CFR (Case Fatality Rate) diphtheria, namely by 5.8%. Of all cases of diphtheria, amounting to 51% of them do not get vaccinated. Known from the annual report of Padang City Health Department 2017 Immunization coverage DPT-HB-Hib lows are in Lubuk Buaya Public Health Center (70.26%) of the 95% targets. The aim of research to determine the relationship level of knowledge and attitude about AEFI with Mother Compliance in giving immunization of DPT-HB-Hib in Lubuk Buaya Public Health Center.

This research method is analytical survey with cross sectional study, data collection was done on January 22-March 12, 2019 in Lubuk Buaya Public Health Center. The population was mothers with babies aged 3-9 months, using a sampling technique purposive sampling with a sample of 66 respondents. Collecting data using questionnaires. Data were analyzed using a computerized with chi-square test.

Results of univariate analysis obtained 60.6% of mothers do not obey the immunization of DPT-HB-Hib, 51.5% of mothers good knowledge, 56.1% of women have a negative attitude and 87.9% of infants with AEFI DPT-HB-Hib fever. The results of the bivariate analysis contained levels of knowledge about AEFI relationship with Compliance mother in immunization of DPT-HB-Hib (p = 0.002) and there is a relationship with Compliance AEFI Attitudes about Women in Giving Immunization DPT-HB-Hib (p = 0.039).

It was concluded that there is a relationship between the level of knowledge and attitudes about AEFI maternal immunization compliance in providing the DPT-HB-Hib. For that is expected to increase outreach health workers about the DPT-HB-Hib and AEFI in order to minimize the perception and poor view of the DPT-HB-Hib and AEFI.

Keywords        : Immunization DPT-HB-Hib, Level of Knowledge, Attitude, AEFI
Omalizumabo veiksmingumas gydant sunkią alerginę astmą
Authors: Kondratavičienė Laima
Published: September 2020

Omalizumabas – tai monokloninis antikūnas prieš imunoglobuliną E (IgE) bei pirmasis biologinis pridėtinis vaistas sunkiai alerginei astmai gydyti. Klinikiniai tyrimai rodo, kad omalizumabo vartojimas žymiai sumažina sunkios alerginės astmos paūmėjimų dažnį bei pagerina gyvenimo kokybę.
Eğitim Bilişim Ağı (EBA) Platformu Hakkında Fen Bilimleri Öğretmenlerinin Görüşleri
Authors: ÇİFTÇİ Burak , AYDIN Abdullah
Published: September 2020

Bu çalışmada, EBA platformu hakkında Fen Bilimleri öğretmenlerinin görüşleri incelenmiştir. Araştırmada betimsel tarama modeli kullanılmıştır. Bu kapsamda Fen Bilimleri öğretmenlerinin görüşleri Online Anket yardımıyla alınmıştır. MEB’de görev yapan 398 Fen Bilimleri öğretmenine 11 soruluk Öğretmen Görüş Formu yönetilmiştir. “Öğretmen Görüş Formu” soruları alanında uzman 1 Öğretim üyesi, 1 Yüksek lisans mezunu Fen Bilimleri öğretmeni ve 1 Yüksek lisans yapmakta olan Fen Bilimleri öğretmeni tarafından hazırlanmış, ayrıca 1 Ölçme Değerlendirme uzmanından yardım alınmıştır. Öğretmen Görüş Formu’nuniç tutarlılık ile ilişkili güvenirlik düzeyini belirlemekiçin Cronbach Alfa değeri kullanılmış ve bu değer 0,73 olarak bulunmuştur. Araştırmada toplanan veriler SPSS for Windows 22.0 programı yardımıyla analiz edilmiştir. Bu verilerin normal dağılıma uygunluğu, çarpıklık, basıklık ve standart hata değerleri kullanılarak tespit edilmiştir. Araştırmaya katılan adı geçen öğretmenlerin Eğitim Bilişim Ağı (EBA) Platformu Hakkındaki görüşlerini ortaya koymak için betimsel istatistikler yapılmıştır. Verilen cevapların ortalamalarından; yeterli düzeyde en yüksek ortalamaya sahip olan sorunun 4,09 ortalamayla “Öğrencilerime EBA (Eğitim Bilişim Ağı) üzerinden ödevler veriyorum” sorusu, yetersiz düzeyde ortalamaya sahip olan sorunun 2,56 ortalamayla “Diğer ülkelerde kullanılan EBA benzeri Eğitim Platformları hakkında yeterli bilgiye sahibim” sorusunun olduğu saptanmıştır. Bu saptamalar ışığında, pandemi ve benzeri süreçlerde EBA ve benzeri platformların kullanılması ve küresel işbirliğinin artırılması önerilebilir.
About SELEC
Authors: Schachter Sonia
Published: September 2020

The Southeast European Law Enforcement Center (SELEC) is the only law enforcement organization in Southeast Europe fighting transborder serious and organized crime, established in 1999 by 11 Member States, Hungary being one of the founding countries.
Psychological Aspects of Restorative Justice
Authors: Farkas Johanna , Sófi Gyula , Fekete Márta
Published: September 2020

Besides the traditional methods of jurisdiction restorative justice techniques (e.g. mediation, family group conferences), that focus more on the interests of the victim and the accused, have come into the light lately. These methods create circumstances under which a common discourse is established, the position and needs, the motivations of both the victim and the offender may surface. In the process there is an opportunity to express emotions and thoughts that eventually result in the emergence of psychodynamics on the level of both the individual and the community. Therefore, there are significant psychological moments in the background of restorative techniques. Being based on the professional literature and studying them, are fully relevant. We have analysed six factors where researches have shown positive effects. (1) We take into consideration the active involvement of the participants, which clearly defines the exercise of the „influence on my own destiny” as opposed to the “experience of own vulnerability”. (2) The area of morality, apology and forgiveness may become important. (3) Expressing the emotions by the offender the victim provides an opportunity to resolve any frustration. (4) Expressing the offender’s motivations gives the victim an opportunity to understand the hidden factors. (5) In addition, emphasis will be placed on offering and, where appropriate, accepting reparation. (6) Finally, the emotions of the involved may change, into the direction of a positive vision.
New challenges of recruiting personnel for the national security services in light of the information society
Authors: Tóth Tamás
Published: September 2020

For members of society, cyberspace has become an indispensable scene of their communication and everyday interaction, thus contributing to the emergence and functioning of the global information society. Depending on the stage of their lives in which the members of each generation have encountered ICT tools, different qualities, skills, abilities and expectations can be observed in them. The members of the Y, the Z, and now the alpha generation have a completely different set of values and adaptability than their predecessors. From the point of view of the national security services, it is important to examine the main characteristics of these generations and social groups, since among other things, the newly recruited members of the national security services are members of society. In order to ensure the operation of effective national security services based on traditional values, knowledge and age specifics, it is necessary to optimize recruitment systems that meet the needs of the next generation and are able to attract their attention and measure their suitability. The aim of this publication is to identify the main groups of challenges and to formulate possible solutions that can support the efficiency of both selection and recruitment activities for each national security service.
Mission Financing: The Case of Contemporary Prophetic Ministry in Ghana
Authors: Aryeh Daniel Nii Aboagye
Published: September 2020

This article discusses the ways in which “newly called prophets” begin and sustain ministry activities. It argues that among the various ways “newly called prophets” use to raise the needed funds to begin ministry is a bare-foot ministry in public places. It also posits that charging consultation fees as a requirement to receiving the services of a prophet, selling “anointing oil”, relics, and prophylactics to aid miracles for seekers, and as means of mobilizing funds to sustain ministry activities in the media lack effective biblical support. Even though money is a critical resource in mission and church life, the means that are used to mobilize funds from the congregants must not be oppressive. The study employed a narrative historical analytical approach towards the discussion of issues. It is recommended that contemporary prophets must adapt good biblical principles and fundraising strategies that do not over-burden congregants/donors.
Pleistocene isolation caused by sea-level fluctuations shaped genetic characterization of Pampus minor over a large-scale geographical distribution
Authors: Li Yuan , Liu Cheng , Lin Longshan , Li Yuanyuan , Xiao Jiaguang , Loh Kar-Hoe
Published: September 2020

The southern lesser pomfret (Pampus minor) is an economically important fish, and its numbers are declining because of overfishing and environmental pollution. In addition, owing to the similarities of its external morphological characteristics to other species in the genus Pampus, it is often mistaken for grey pomfret (P. cinereus) or silver pomfret (P. argenteus) juveniles. In this study, the genetic diversity and structure of 264 P. minor individuals from 11 populations in China and Malaysia coastal waters were evaluated for the first time, to the best of our knowledge, using mitochondrial cytochrome b fragments. The results showed that P. minor had moderate haplotype diversity and low nucleotide diversity. Furthermore, two divergent lineages were detected within the populations, but the phylogenetic structure corresponded imperfectly with geographical location; thus, the populations may have diverged in different glacial refugia during the Pleistocene low sea levels. Analysis of molecular variation (AMOVA) showed that genetic variation originated primarily from individuals within the population. Pairwise FST results showed significant differentiation between the Chinese and Malaysian populations. Except for the Xiamen population, which was classified as a marginal population, the genetic differentiation among the other Chinese populations was not significant. During the Late Pleistocene, P. minor experienced a population expansion event starting from the South China Sea refugium that expanded outward, and derivative populations quickly occupied and adapted to the new habitat. The results of this study will provide genetic information for the scientific conservation and management of P. minor resources.
A new species of Indoganodes Selvakumar, Sivaramakrishnan & Jacobus, 2014 (Ephemeroptera, Teloganodidae) from Sri Lanka
Authors: Martynov Alexander V. , Palatov Dmitry M.
Published: September 2020

A new species, Indoganodes tschertoprudisp. nov. is described from Sri Lanka. The genus Indoganodes Selvakumar, Sivaramakrishnan & Jacobus, 2014 was previously known only by one species from the Western Ghats (India). The new species differs from Indoganodes jobini Selvakumar, Sivaramakrishnan & Jacobus, 2014 by the number of denticles on the claws, shape of the femora, shape of the chalazae on the femora, absence of any median tubercles on the terga, and presence of posterolateral processes only on segments VI–IX. The diagnosis of Indoganodes is also emended. Morphological larval affinities of Indoganodes and Ephemerellina Lestage, 1924 and the probable origin and diversification of I. tschertoprudisp. nov. are discussed.
La figure de l’artiste dans le Mémoire de Jean-Michel Papillon sur François Chauveau (1738)
Authors: Benard Élodie
Published: September 2020

Le Mémoire sur François Chauveau figure dans un ouvrage de Jean-Michel Papillon, portant sur la gravure sur bois, imprimé en quelques exemplaires en 1738 et jamais donné au public. Désireux de compléter la notice que Perrault a consacrée au graveur dans ses Hommes illustres , Papillon s’inscrit dans cette tradition : il s’agit d’écrire une Vie d’illustre. Ainsi, topique encomiastique, schémas héroïques relevant du roman courtois et du conte, et comparaison aux plus grands modèles, en l’occurrence Poussin, contribuent à construire une figure d’artiste exemplaire, celle du créateur inspiré et indépendant. Œuvre sur un graveur, écrite par un graveur, le Mémoire est par ailleurs un hommage à l’image, capable – aussi bien, voire mieux que le texte – de consacrer l’immortalité de l’artiste.
Quatre dessins inédits de François Chauveau pour Le Lutrin de Boileau : l’illustration d’un « Burlesque nouveau »
Authors: Cornuaille Philippe , Reguig Delphine
Published: September 2020

L’illustration du Lutrin , poème inséré dans Les Œuvres diverses du Sieur D*** de Boileau, est une source d’énigmes que la recherche, littéraire ou bibliographique, n’a pas été, jusqu’ici, en mesure de résoudre. Si, entre 1674 et 1701, seulement deux gravures de François Chauveau apparaissent bien dans les éditions, la découverte récente de quatre dessins originaux destinés à orner le poème « héroï-comique » permet d’enrichir la compréhension de la collaboration entre le poète et l’artiste. En figurant la présence active d’un palimpseste textuel antique dans l’écriture du Lutrin , l’illustration confirme la place majeure de l’esthétique burlesque chez Boileau.
La réinvention du service public forain
Authors: Colin Frédéric
Published: September 2020

La fermeture de nombreux guichets de différents services publics, au nom de l’efficience et d’une politique de modernisation, a conduit à un sentiment d’abandon d’une part croissante de la population, et à une demande de réintroduction d’une prestation plus proche et plus régulière. En ce sens, le service public forain a pour vocation de réaliser une action administrative de proximité au plus près du public. Il nécessite de revoir profondément la carte administrative. Il implique une collaboration renforcée entre acteurs d’intérêt général. Encore largement expérimental, il est une occasion de relégitimer l’action publique.
Effect of Activation Agents on COD Reduction Using Activated Carbon from Agricultural Residue
Authors: Mohd Alias Mohd Zazmiezi , Mohd Ghazi Rozidaini , Nik Yusoff Nik Raihan , Jamaludin Mohd Hafiz
Published: September 2020

This study investigated the effect of activating agent on activated carbon preparation and potential chemical oxygen demand (COD) reduction using activated carbons (AC) prepared. Zinc chloride, phosphoric acid and potassium hydroxide were utilized in impregnation of bamboo and rice husk. Result of SEM-EDX, FTIR as well as COD reduction were compared and discussed. The SEM displayed highest porosity in AC using KOH activation. FTIR analysis displayed obvious difference for each activation. AC using KOH activation obtained highest COD reduction.
Upper Arm Disability after Axillary Surgery for Early Breast Cancer
Authors: Mbaabu Karen , Wasike Ronald
Published: September 2020

Background: The treatment of early breast cancer includes surgical removal of the tumor and evaluation of axillary lymph nodes. Axillary lymph node surgery is associated with upper arm morbidity. The impact of this upper arm limitation has a direct effect on the patient’s quality of life.

Objectives: To quantify the symptoms of upper extremity disability, and identify correlations between severity of symptoms and type of axillary surgery.

Methods: An observational study of 2 groups of patients who had undergone surgery for breast cancer. Data were collected using the DASH® questionnaire and analyzed using SPSS v13®. Results: All 102 participants reported upper extremity symptoms. The mean DASH score for all participants was 51.7. Participants in the retrospective arm had a higher DASH score of 53; those in the prospective arm had a score of 47.3.

Conclusion: There was no correlation between severity of symptoms and type of axillary surgery performed. Targeted rehabilitation services should be implemented after the primary surgery.

Keywords: Early breast cancer, Axillary dissection, DASH score, Upper arm disability
Effects of static bottlenecks on traffic flow in urban road network
Authors: Mahona John N.P. , Mhilu Cuthbert F. , Kihedu Joseph , Bwire Hannibal
Published: September 2020

Existing traffic flow models do not consider the effects of road static bottlenecks on traffic flow. In this paper, a modified macroscopic continuum  model for traffic flow on urban road network with static bottlenecks is presented. The model takes into account the fluctuations of traffic flow considering static bottlenecks during the morning peak period. The model results show that existence of static road bottlenecks with various configurations cause traffic flow instabilities. This phenomenon lead into stop-and-go traffic flow conditions under the moderate density and reduction of the traffic system’s efficiency. Furthermore, results show that an increase in traffic density is accompanied by a significant decrease of speed which adversely influences performance of roadway and decrease the traffic system’s efficiency and thus resulting to the occurrence of congestions. The methodological aspects of the study and results will enable traffic engineers and planners to assess and improve existing urbanroad networks.

Keywords: Traffic flow, Bottlenecks, stability, Stop-and-go traffic, System’s efficiency, Congestion.
Throughput time reduction of limited test at a silk testing unit
Authors: Sargunamani D. , Raghu K. , Naik Subhas V.
Published: September 2020

The present economic situation across the globe calls for intense efforts to maximize production in minimum throughput time and cost to enhance operating performance and the quality of products. The problem with manufacturing/ testing goods forces the process owners to be organised and direct attention to minimise the global throughput time within the manufacturing enterprise. Minimising time has a chain effect to enhance the worth of manufacturing/testing processes. The minimisation of cycle time consequently enhances the quality. This report describes an  improvement process based on lean thinking in order to reduce throughput time of limited test (Denier test) for grading silk quality. For an  implementation of the adaptive work, it is important to know about the time needed for the various steps involved adding their time to find the total time in the existing system by process mapping to find opportunities to reduce time. The results of the study show that time can be reduced in theprocess of limited test from 350 min to 220 min (Multiendsilk) and from 246 to 133 min. (cottage basin)eliminating various causes such as waiting time, absenteeism so on thus improving throughput time. The novelty of the study is that it is the first one to apply total quality management concept in silk testing unit for throughput time reduction from which a standard table has been created for limited test (avoiding non value added activities) for referring for throughput time involved to complete silk denier test faster.

Keywords: Multiend silk, Cottage basin silk, throughput time, Kilcha, Denier
Appraisal of environmental sustainability studies in the quantity surveying curriculum
Authors: Nazif A. , Mustapha A.K. , Ocheme D.
Published: September 2020

The construction industry requires professionals that are environmentally sensitive to sustain the built environment for future generation. This is necessary due to the rising environmental degradation from various construction activities. Tertiary institutions could be the appropriate platform to instil these ideas in aspiring construction professionals. This study assessed Quantity Surveying (QS) curriculum of Polytechnics to examine the courses taught and to assess whether there are courses in the curriculum that are related to environmental sustainability studies. Also, questionnaires administered to lecturers and students of QS departments was used to examine the concept and awareness of environmental sustainability taught in the institution. The study established that generally, taught courses in QS departments of Polytechnics have little or no environmental sustainability factored into them. Furthermore, cumulative mean and regression analysis were used to evaluate the data obtained from the questionnaire. The analysis established that the respondents affirmed that the QS curriculum does not create awareness of environmental sustainability, having a cumulative mean score of 2.04 for lecturers and 2.28 for students which is within the cut-off point of 1.5 to 2.5 (Disagree). Based on the regression analysis, it was established that the correlation between the lecturers’ and the students’ responses was significant having a R result of 0.95. The regression analysis explicated that the lecturers can explain the students’ views having a R2 value of 0.90. The review of QS curriculum to include environmental sustainability studies is paramount in producing QS professionals that are environmentally inclined in training.

Keywords: Environmental Sustainability, Quantity surveying, Higher institutions and Curriculum
Coal mining and the environmental impact of Acid Mine Drainage(AMD): A review
Authors: Ojonimi T.I. , Asuke F. , Onimisi M.A. , Onuh C.Y. , Tshiongo-Makgwe N.
Published: September 2020

In spite of the growing global initiatives towards achieving clean energy, coal remains a dominant source of electricity generation, a fuel for iron and steel production, an important entity among road construction materials and a commodity for foreign exchange earnings for many nations. Coal mining from old and active sites remains a source of an environmental problem described as acid mine drainage (AMD). AMD is produced when sulfide present in waste rocks or tailings in coal mines reacts with air and water in a microbes facilitated oxidation to form solutions with high acidity. The acids formed by these chemical and biological conditions further release heavy metals present in the host rock in concentrations higher than are acceptable by environmental standards (pb;0.01, Zn;5, Cu;2, Fe;0.3 mg/l as prescribed by WHO and Encyclopedia of Environmental Science,2000) such that soils, surface and underground waters are contaminated. Consequently, the human population which derives her livelihood in the mine zones, in form of crop production and fishing/modern aquaculture is endangered by terminal health diseases. This article aims at bringing forth, the urgent need to work towards achieving goal six of the United Nations Sustainable Development Goals, 2030 (SDGs-6) which is clean water and sanitation while enriching the knowledge repository of the environmental problem for the purpose of teaching, research, community services and policy making. An overview of AMD menace, variables which influence its formation, selected areas that have been impacted, and a brief analysis of its treatment cost have been discussed with a list of concluding remarks in the paper.

Keywords: Coal, Mining, Environmental , AMD
Effect of different syngas compositions on the combustion characteristics and emission of a model combustor
Authors: Sanusi Y.S. , Dandajeh H.A.
Published: September 2020

There is a growing need to design fuel flexible combustors. This require understanding of the combustion and emission characteristics of the combustors under varying fuel compositions. In the present study, the combustion characteristics and emission of methane and syngas flames were investigated numerically in a swirl stabilized combustor. The numerical model was developed using ANSYS-fluent software and validated using experimental values of temperature, CO2 and NOx emissions. A two-step chemical mechanism was used to model methane-air combustion. Results of the numerical validation showed similar trend between the experimental and predicted temperature along the combustor axis with about 5 % over prediction of the temperature. Syngas-air combustion was thereafter modeled using a 21 step chemical mechanism. Syngas compositions studied were: syngas A (67% CO: 33% H2), syngas B (50% CO: 50% H2) and syngas C (33% CO: 67% H2). Results showed that for pure methane, a V-shaped flame was observed with the flame attached to the fuel nozzle, while a lifted flame was observed for case of syngas A composition. CO gas with higher ignition temperature and flammability as compared to H2 gas is the dominant gas in syngas A fuel composition. Jet flames were observed for syngas B and syngas C. Carbon monoxide is a slow burning gas. Therefore syngas with low CO content has a low tendency of emission of CO from the combustor. This suggests that syngas with high CO content such syngas A may require more residence time to completely combust the CO gas. The NOx emission was observed to have the same trend as that of the combustor maximum temperature. Syngas C flame had the highest NOx emission, while, syngas A flame had no NOx emission. This is due to low combustor temperature observed in the case of syngas A flame.

Keywords: Syngas, ANSYS-FLUENT, Swirl-stabilized combustor, NOx emission, Chemical Mechanism
Process optimization of the mechanical properties of AISI 1020 steel quenched using maize-stover ash potash solution
Authors: Ogunwede O.I. , Abolarin M.S. , Abdulrahman A.S. , Olugboji O.A. , Agboola J.B. , Lawal S.A. , Isah L.A.
Published: September 2020

The process parameter optimization of maize-stover ash potash (MSAP) as a quenching medium for heat treatment of AISI-1020 steel was conducted in this study to improve the mechanical properties of steel after carburization and quenching. The optimization process utilized Taguchi L9(32) orthogonal array method to determine the individual Signal to Noise (S/N) ratio and Analysis of Variance (ANOVA). A multi-response weighted analysis technique was applied to derive combined quality responses of the heat treated test pieces. The result shows that the optimal factor level of MSAP solution strength was achieved at AM1BM1, which offered 57.6 HRC hardness, 39 J toughness and 1971 N/mm2 tensile strength as improved mechanical properties for the heat treated steel.

Keywords: Optimization, MSAP, quenching, Taguchi, ANOVA
Delivering sustainable transport infrastructure projects (railway) in Nigeria: Frameworks, indicators, method and tools
Authors: Oraegbune O.M. , Ugwu O.O.
Published: September 2020

This study presented the issue of railway transportation infrastructure sustainability which involves multi-dimensional view of sustainability criteria such as economy, environment and society with the problem of non-systematic method of assessment in Nigeria. The aim of this study is to ascertain the extent of practice of sustainability in railway transportation infrastructure projects through the frame work, methods, tools and identify infrastructure sustainability priority indicators amongst stakeholders. In this research, weighted sum model technique in multi-criteria decision analysis (MCDA), was used. This section formulates the mathematical model for computing the sustainability index (SI) using the Weighted Sum Model (WSM) which is structured in three steps. Also employed in the assessment is cognitive/reasoning map decision aid for infrastructure sustainability appraisal. This study also discussed the issue of key performance project indicators for transport infrastructure using sustainability appraisal in infrastructure projects (SUSAIP). Sustainability indicators are discoursed base on regional level(s), for example All-region represents cumulative results from the four regions. The result of the questionnaire based indicators validation by the stakeholders indicates that some indicators can easily be influence due to unexpected changes or regional priorities. Because of non-availability of systematic method of appraisal of sustainability criteria and priority indicators in practice level. This paper proposed gradual exploitation and collaborating decision frameworks for evaluation and mathematical foundation models. This method employed computational analysis in quantitative based decision-making crisp value and sustainability index for railway transport infrastructure projects assessment in Nigeria.

Keywords: Cognitive/reasoning map, key performance indicators, Sustainability criteria, sustainability assessment tools, transport infrastructure projects, and weighted sum model.
EVALUACIÓN DEL RENDIMIENTO DE TECNOLOGÍA DE NANOFILTRACIÓN DE ACEITE LUBRICANTE APLICADO A MAQUINARIA PESADA, MEDIANTE ANÁLISIS Y PRUEBAS DE LABORATORIO SEGÚN NORMA ISO 4406
Authors: MONTIJO-VALENZUELA ELIEL EDUARDO , García-Gámez Leonor , Espinoza-Zallas Francisco Alán , Borboa-Acosta Eugenio , Monteverde-Gutiérrez Ofelia
Published: September 2020

de la vida de los lubricantes en maquinaria pesada, mediante el análisis y pruebas de laboratorio, bajo el criterio de la normalización ISO 4406. La investigación se compone de un fundamento teórico sobre la nanotecnología, las nanofibras de filtrado, lubricantes, aditivos, oxidación de los lubricantes y la norma de limpieza en aceites lubricantes; la ISO 4406:1999. En el segundo apartado se describen los materiales y métodos utilizados en la investigación, desde la metodología de implementación de la tecnología de nanofiltración en sistemas hidráulicos, hasta la propuesta de un procedimiento estandarizado para la toma de muestras en campo, para finalizar con las pruebas de laboratorio de dichas pruebas. Para esta investigación se utilizaron dos máquinas distintas con la implementación de tecnología de nanofiltración; un generador diésel Cat® C4.4 y  un motor diésel indstrial Cat® C13 ACERT™, y para cada una se tomaron 3 muestras diferentes en intervalos de tiempo prolongados, en cuanto a las horas de operación de la máquina. En el tercer apartado se muestran los resultados de las pruebas obtenidas en campo, mediante resultados de laboratorio, con la finalidad de verificar las concentraciones de material particulado y agentes contaminantes como hollín, agua y combustible, y en qué medida son aceptables bajo la norma ISO 4406:1999. Para finalizar, se exponen los hallazgos y conclusiones de esta investigación, en donde se destaca que no se apreció envejecimiento prematuro en los aceites analizados a través de su tiempo de uso, cuando este es procesado por un sistema de nanofiltración y se observó una disminución del material particulado a través del tiempo de nanofiltración, principalmente en partículas de >4 ?m y >6 ?m, mejorando las condiciones de lubricación en el aceite.
Price Stickiness under Stochastic Demand
Authors: Wu Sheng-Yeh , Chen Guan-Ru
Published: September 2020

This study develops a two-period model in which the manufacturer determines a price floor and sets production output prior to resolution of uncertainty. The closer the distance between the minimum price and the high-demand-state price, the higher the degree of price rigidity. Solving for the minimum resale price and production output, the model indicates that asymmetric price transmission could be a characteristic of competitive markets. The retail price in a highly concentrated retail market might be lower than that in a retail market with fierce competition. The relationship between price adjustments and the market competition suggests that the reason underlying price rigidity should be considered while formulating the antitrust and monetary policies.
O discurso nos limites da obediência: enunciados que afagam ou abafam conflitos entre Mandetta e Bolsonaro na crise do coronavírus
Authors: Fabbri Jr. Duílio , Ormaneze Fabiano
Published: September 2020

Este trabalho analisa declarações do ministro da Saúde, Luiz Henrique Mandetta, durante o período da pandemia causada pelo novo coronavírus, em março de 2020. Por meio do corpo teórico-metodológico da Análise de Discurso Francesa, são comparados os sentidos produzidos por meio de falas em duas entrevistas coletivas, antes e depois de pronunciamento do presidente Jair Bolsonaro, minimizando os efeitos da doença e reagindo negativamente às medidas de contenção adotadas por estados brasileiros, a partir das orientações do Ministério da Saúde, referendadas pela Organização Mundial da Saúde (OMS), e seguindo medidas implantadas por outros países. As diferenças de posicionamento levaram à demissão do ministro. Refletimos, assim, sobre os sentidos de democracia, autoritarismo, confiança e obediência no jogo das relações de poder. A análise discursiva das falas do ministro da saúde traz a presença (in)visível da postura do governo no que tange à pandemia, sustentando elementos de autoritarismo, ajudando a provocar desinformação entre os brasileiros.
Pensar o discurso de quem não pode falar em situação de igualdade
Authors: Caetano Fernando
Published: September 2020

A ideia de Sujeito de Direito é um imperativo da Filosofia do Direito que universaliza os Direitos Humanos. Acontece que o pretenso universalismo não dá conta da realidade. A criação discursiva, histórica e filosófica do sujeito acaba por instaurar um outro sujeito que não frui efetivamente dos direitos do Sujeito de Direito. Esse outro sujeito é incapaz de constituir direitos para si, porque não pode falar em igualdade social. Pensar o discurso de quem não pode falar em igualdade é repensar a própria forma como se produzem e reproduzem as estruturas de dominação que marginalizam e subalternizam sujeitos.
PENGARUH PENGETAHUAN KEWIRAUSAHAAN, PROGRAM STUDI DAN GENDER TERHADAP MINAT BERIWIRAUSAHA MAHASISWA
Authors: Adawiyah Robiatul , Norman Efrita
Published: September 2020

ABSTRACT

Unemployment and a weak entrepreneurial spirit are serious problems in Indonesia. This study aims to determine the effect of entrepreneurial knowledge, study program, semester level and gender on interest in entrepreneurship among FEBI INAIS students. The method used is a quantitative study with multiple regression analysis of dummy variables. The research sample was 133 FEBI INAIS students. The results showed: there was a positive and significant influence on entrepreneurial knowledge, a positive and significant influence on entrepreneurial knowledge, study programs, semester level, and gender on interest in entrepreneurship in FEBI INAIS students.

Keywords: entrepreneurship, gender, department,  interest, knowledge,
PENGARUH PERSEDIAAN TERHADAP PROFITABILITAS PT DOK & PERKAPALAN BAHARI (PERSERO)
Authors: Supodo Yuli
Published: September 2020

ABSTRACT

Industrial or trading companies always keep supplies of raw materials and other supporting materials. Without an inventory, the entrepreneur will be faced with the risk that the company at one time cannot meet the needs of consumers and it also means that the company will lose the opportunity to earn the profit it should get. This study aims to discuss and analyze the Influence of Inventory on the Profitability of PT Dok & Perkapalan Bahari (Persero). The research method is an explanatory survey method, using a quantitative method with primary data. With the research results. The effect of inventory on positive profitability with the results using the method of cost of goods an average of 7,107,143, -.

Keywords: inventory, production, profitability
ANALISIS PERSEPSI CIVITAS AKADEMIKA TERHADAP IMPLEMENTASI PERKULIAHAN E-LEARNING SELAMA PANDEMI COVID-19:
Authors: Qowaid Qowaid , Junaedi Dedi , Romli Moh , Primarni Amie
Published: September 2020

ABSTRACT

The Covid-19 pandemic has forced educational institutions to implement an online learning system. This study aims to explore the cognitive, affective and conative aspects of e-learning implementation; and analyzing the influence of age, gender differences, status and area on the implementation of e-learning at the IAI-N Laa Roiba campus. The research method used is a combination of descriptive analysis and quantitative analysis with a dummy variable regression approach. Research respondents were the academic community of IAI-N Laa Roiba. The results are as follows: e-learning is generally carried out using the Google Classrom application, Google Meet and Zoom Meeting. Other models are WA and website portals. The cognitive aspects of the implementation of e-learning during a pandemic are influenced by effective, conative aspects, and to some extent are influenced by factors of age, gender, education and location of domicile. The affective aspect is obeyed by the cognitive and conative aspects, and to some extent it is influenced by the level of education and gender. While the conative aspect is influenced by cognitive and affective aspects, and to some extent is influenced by the level of education. The factors of age, gender, status, and location did not significantly influence the conative aspects of e-learning implementation during the Covid-19 pandemic.

Keywords: affective, e-learning, cognitive, conative, Covid-19 pandemic
HUBUNGAN KOMITMEN ORGANISASI DENGAN KINERJA KARYAWAN PADA YAYASAN PENDIDIKAN ISLAM TERPADU AL-MUAWANAH
Authors: Sailistia Faisal , Anugrah Raka Pria , Hanoum Farah Chalida
Published: September 2020

ABSTRACT

Employee performance is an organizational key to achieving company goals. This study aims to determine the relationship between organizational commitment and employee performance of the Al-Muawanah Integrated Islamic Foundation. The research method used is a mixed method descriptive qualitative and quantitative approach with multiple regression. The results showed that organizational commitment, employee performance generally went well. There is a strong correlation between organizational commitment and employee performance with the Pearson correlation coefficient of 0.869. There is a positive and significant relationship between organizational commitment and the performance of Foundation employees. This means that the more positive the organizational commitment, the higher the employee performance of the Al-Muawanah Integrated Islamic Foundation

Keywords: Organizational Commitment, Employee Performance, Islamic Foundation
Spatial analysis on the occurrence of inshore and offshore bottlenose dolphins (Tursiops truncatus) in Osa Peninsula waters and Golfo Dulce, Costa Rica
Authors: Pacheco-Polanco Juan Diego , Oviedo Correa Lenin , Fernandez Marc , Herra-Miranda David
Published: September 2020

The aim of this assessment is to advance our understanding in the spatial ecology of the resident inshore and offshore population of bottlenosedolphins in Golfo Dulce (GD) and Osa Peninsula Waters (OPW). Our approach used niche-based models (Phillips et al., 2006, Thorne et al., 2012,Friedlaender et al., 2011), which provided details of how dolphins use coastal and oceanic habitats, describing the factors that influence theirdistribution in the study area and identifying the critical habitats to be considered for management and conservation. Our analyses indicate severalimportant aspects of the distribution of these two ecotypes of bottlenose dolphins. As expected in the study area, these two ecological races occurin close proximity, but differ in the structural factors of the habitat they occupy. The inshore population uses areas close to the mouths of the riversas critical foraging habitats, being influenced by tidal cycles and seasonal changes in water temperature and salinity. The offshore population inoceanic habitats must rely on prey species found in rare but profitable patches, therefore pelagic dolphins in the open ocean would often need totravel long distances searching for these patches. Distribution models illustrating the difference in habitat use presented in this assessment are keyto effective management of the marine mammals’ diversity in Costa Rica.
Seasonal and interannual variations in the distributions of tuna-associated dolphins in the eastern tropical Pacific Ocean
Authors: C. Fielder Paul , Lennert-Cody Cleridy E.
Published: September 2020

Seasonal and interannual (El Niño–La Niña) variations in dolphin distributions in the eastern tropical Pacific Ocean have not been quantified, inspite of an extensive research vessel database. Fisheries observer data from the yellowfin tuna purse-seine fishery, collected year-round from 1986through 2015, were used to construct a binned spatiotemporal dataset of the presence/absence of spotted, spinner and common dolphin schools bymonth and 1° area. Distribution patterns were predicted from generalised additive logistic regression models applied to the binned data, with dynamicpredictors of surface temperature and salinity, thermocline depth and a stratification index. The dolphin taxa, especially common dolphins, showsome niche separation in relation to these variables. Predicted distributions for each taxon showed seasonal and interannual differences. Spottedand spinner dolphins responded to changes in the position and size of the eastern Pacific warm pool and avoided the equatorial cold tongue inSeptember–October and during La Niña. Common dolphins responded to seasonal and interannual changes in the Costa Rica Dome, the cold tongue,and the coastal upwelling habitat along Baja California, Peru and Ecuador. These predicted temporal variations are consistent with changes inpreferred habitat driven by environmental variability.