bluuebunny/crossref_metadata_2025 huggingface dataset:
Crecimiento y mortalidad en juveniles de siete especies arbóreas en un bosque muy húmedo tropical intervenido de Costa Rica
Authors: Sáenz Grace , Finegan Bryan , Guariguata Manuel
Published: October 2020

Se estudiaron por un período de cuatro años los patrones de crecimiento en diámetro y altura, así como la mortalidad de brinzales (individuos e 0.30 m altura y < 1.5m altura) y latizales (individuos e1.5 m altura y £ 9.9 cm DAP) en un bosque sometido a dos tipos de intervención. El estudio se basa en mediciones anuales de individuos de las dos categorías de tamaño, marcados un año después de la aplicación del aprovechamiento. Siete especies arbóreas fueron estudiadas: Cecropia (dos especies) Cecropia insignis y Cecropia obtusifolia, Laetia procera, Rollinia pittieri, Apeiba membranacea, Virola koschnyi. y Virola sebifera. A nivel de brinzal las especie que presentaron el mayor crecimiento en diámetro y en altura fueron las especies del género Cecropia, mientras que en la categoría de latizal, fue L. Procera. El crecimiento en diámetro y en altura se correlacionó significativamente con el índice de iluminación de copa, únicamente en el caso de las dos especies de Cecropia y V. sebifera. Las tasas de mortalidad más altas se encontraron en los brinzales.
Morfogénesis de la fase sexual de seis especies mexicanas de helechos del género Dryopteris (Dryopteridaceae)
Authors: Pérez-García Blanca , Mendoza Aniceto , Reyes Jaramillo Irma , Riba Ramón
Published: October 2020

Se describe y se compara la morfogénesis de la fase sexual de seis especies de Dryopteris. Las esporas son monoletes, elipsoidales con perina de color pardo a pardo obscuro, su superficie es rugosa de contornos tuberculados y la perina en forma de pliegues. El patrón de germinación en todas las especies es tipo Vittaria y el desarrollo protálico tipo Aspidium. Los gametangios son del tipo común de los helechos leptosporangiados del tipo avanzado, los cuellos de los arquegonios tienen cuatro hileras de células con 4 a 5 células cada una, se forman entre los 53-218 días. Los anteridios de las seis especies se formaron entre los 46-234 días después de sembradas las esporas y tienen 3 células que rodean a la célula androgénica. Los esporofitos se formaron entre los 60-262 días después de sembradas las esporas, como producto de la fecundación en D. cinnamomea, D. karwinskyana, D. maxonii y, D. rossii y son de origen apogámico en D. munchii y D. wallichiana.
Desarrollo protálico de Lygodium heterodoxum y Lygodium venustum (Schizaeaceae)
Authors: Mendoza Aniceto , Pérez-García Blanca , Riba Ramón
Published: October 2020

Se describe la morfogénesis y la morfología adulta de los gametofitos de Lygodium heterodoxum Kunze y Lygodium venustum Sw. El patrón de germinación corresponde al tipo Vittaria de acuerdo con Nayar y Kaur (1971) o al tipo Lygodium en opinión de Raghavan (1989). El desarrollo protálico es tipo Adiantum con transición al tipo Ceratopteris. Los gametangios son del tipo común de los helechos leptosporangiados y el esporofito se desarrolla a los 85 días a partir de la siembra, sus hojas son flabeliformes, con tricomas en forma de clava, unicelulares, en el margen y ambas superficies de la lámina; los estomas son anomocíticos. El experimento desarrollado transfiriendo un fragmento de medio de cultivo en el que hubieron crecido gametofitos arquegoniados y gametofitos anteridiados mas pequeños a una nueva caja de cultivo en la que se sembraron esporas, dió como resultado el que, a los 14 días después de la siembra crecieran gametofitos inicialmente anteridiados con tendencia a forma espatulada sin zona meristemática ni cojinete; los anteridios se mostraron normales con anterozoides activos en agua. Se demuestra de esta manera la presencia en el medio de cultivo de sustancias con actividad anteridogénica.
Comparación de la tasa de crecimiento de Penaeus vannamei (Decapoda: Penaeidae) en cultivos semi-intensivos de invierno y de verano
Authors: Audelo-Naranjo Juan M , Zamudio-Armenta Olga O , Madero-Pérez José L
Published: October 2020

The growth rates of Penaeus vannamei in Sinaloa, Mexico, during winter and summer semi-intensive cultures, were compared using a linear regression model that considered age and accumulated temperatures as independent variables. In the first case, the growth curves slope differed significantly, indicating a slower growth in winter; when using accumulated temperatures there was no difference in growth rates indicating that P. vannamei at 12 g (cocktail size) may be harvested when the accumulated weekly temperature reaches 300- 350°C, depending on the initial size of the organisms in culture
Colonization of Socorro Island (Mexico), by the tropical house gecko Hemidactylus frenatus (Squamata: Gekkonidae)
Authors: Galina-Tessaro Patricia , Ortega-Rubio Alfredo , Alvarez-Cárdenas Sergio , Arnaud Gustavo
Published: October 2020

Hemidactylus frenatus Schlegel is a nocturnal lizard widely distributed in Southern Asia, the Pacific Islands, tropical Africa, Australia and Polynesia (Smith and Taylor 1950, Bustard 1970).
Mamíferos terrestres de la Reserva de la Biosfera de Sian Ka’an, Quintana Roo, México
Authors: Pozo de la Tijera Carmen , Escobedo Cabrera José Enrique
Published: October 2020

Con base en el muestreo de siete localidades y una extensa revisión bibliográfica, se obtuvo la lista de especies de mamíferos terrestres de la Reserva de la Biosfera de Sian Ka’an estado de Quintana Roo, México. Durante 57 días de campo, se utilizaron trampas Sherman, Tomahawk, redes de niebla y escopetas, se registraron rastros y observaciones directas. Se registraron 70 especies, ocho órdenes, 22 familias y 57 géneros. Se encontraron seis especies como nuevos registros: Marmosa mexicana, Micronycteris microtis, Micronycteris schmidtorum, Eptesicus furinalis, Rhogeessa parvula y Ototylomys phyllotis. Doce especies son catalogadas bajo algún riesgo ecológico según la Norma Oficial Mexicana; trece especies son endémicas a Mesoamérica y una endémica de México. Se presentan cuadros de abundancia relativa, registro por localidades y por tipo de vegetación de cada especie.
Espectro trófico de peces concurrentes al área de crianza Playa Chipana (21° 19'S -7000 W )del norte de Chile
Authors: Vargas F. Mauricio , Cifuentes P Sandra , Emparanza M. Esteban
Published: October 2020

A total of 361 fishes incluiding Odonthestes regia. Paralabax humeralis Isacia conceptions, Cilus gilbeti Menticirrhus ophicephalus, Sciaena deliciosa and Scomber japonicus were colleted in the nursery area Plata Chiapa (21°19 S)
Cystine nephrolithiasis in an endangered canid, Chrysocyon brachyurus (Camivora: Canidae)
Authors: Mussart Norma B , Coppo José A
Published: October 2020

Se halló cálculos de cistina en la pelvis renal de un ejemplar adulto de Chrysocyon brachyurus (aguará-guazú), cuya muerte había ocurrido en el zoológico de Sáenz,Peña (Chaco). El diaguóstico fue realizado por el método colorimétrico del nitroprusiato. La presencia de cristales microscópicos hexagonales en el cálculo pulverizado confirmó la presunción de cistina. La cistinuria es una arninoaciduria hereditaria que a largo plazo produce nefrolitiasis. El aguará-guazú puede padecer esta metabolopatía, por lo que durante su cautiverio la orina de este animal debería ser investigada para detectar la presencia de cristales de cistina; un tratamiento oportuno puede salvarle la vida. En Argentina, el número de C. brachyurus no superaría los 1000 ejemplares, en peligro de extinción.
Reproducción de tres especies de Clidemia (Melastomataceae) enBrasil
Authors: Flávia Melo Gladys , Machado Isabel Cristina , Luceño Modesto
Published: October 2020

Se estudió el sistema reproductivo de Clidemia capitellata (Bonpl.) D. Don, C bullosa DC. y C hirta (L.) D. Don. Las tres especies se distribuyen en las imágenes de la selva de Dois Irmaos, Recife, Pernambuco, Brasil donde forman pequeñas poblaciones y se pueden calificar como especies simpátricas. El periodo de ﬂoración se extiende todo el año. Hay visitas esporádicas de abejas Halictidae (Augochloropsis sp.) que recogen polen por vibración ("buzz pollination"). Las tres especies son agamospérmicas y muestan un elevado índice de esterilidad masculina, medida por la escasa viabilidad polínica.
Virginia Bertolotti, Magdalena Coll (Coords.). Las formas de decir. La prensa en Uruguay en el siglo XIX. Montevideo: Universidad de la República, 2020, 228 páginas
Authors: Albitre Paula
Published: October 2020

Reseña
Analisis Kualitas Air dan Kualitas Lingkungan untuk Budidaya Ikan di Danau Laimadat, Nusa Tenggara Timur
Authors: Kulla Obed Lepa Saba , Yuliana Ernik , Supriyono Eddy
Published: October 2020

Danau Laimadat merupakan danau terbesar di Kabupaten Sumba Tengah, Nusa Tenggara Timur, dan menjadi lokasi utama budidaya ikan air tawar. Kualitas air dalam budidaya ikan memegang peran penting dan membutuhkan monitoring. Tujuan penelitian adalah menganalisis kesesuaian kualitas air dan kualitas lingkungan Danau Laimadat untuk budidaya ikan air tawar. Waktu penelitian adalah Januari-Mei 2018 berlokasi di Danau Laimadat, Nusa Tenggara Timur.  Metode penelitian menggunakan metode survei. Pengumpulan data dilakukan dengan cara observasi dan pengukuran parameter kualitas air di lapangan. Pengambilan data dilakukan pada empat stasiun pengamatan. Analisis data dilakukan secara deskriptif dengan membandingkan kualitas air Danau Laimadat dengan Standar Baku Mutu perairan untuk budidaya ikan air tawar (PP No. 82 Tahun 2001). Hasil penelitian menunjukkan bahwa kualitas air Danau Laimadat sesuai dengan standar baku mutu untuk parameter suhu, pH, dan oksigen terlarut. Parameter kedalaman dan kecerahan air tidak terdapat pada baku mutu, namun kedalaman dan kecerahan sesuai persyaratan budidaya ikan di perairan tawar. Secara visual, tidak terjadi pencemaran pada perairan Danau Laimadat. Dengan demikian, Danau Laimadat layak dijadikan lokasi budidaya ikan air tawar.
Item-Based Acquisition of Dislocation in Early Child French
Authors: Jourdain Morgane , Canut Emmanuelle , Lahousse Karen
Published: October 2020

This study tests whether the usage-based concept of item-based schema can explain the development of constructions other than verb-argument constructions (VACs). Through a corpus study of 600 dislocations produced by two French children between age 1;7.12 and 2;5.11, and 600 from their input, we show that the concept of item-based schemas can indeed be extended to other types of constructions. We also show that the earliest item-based schemas produced by children are similar to specific syntactic featuress of dislocations in their input, and that the dislocations produced by the adults of our corpus can also be described in terms of item-based schemas. Based on these results, we make the hypothesis that the dislocations of adults may not necessarily be produced based on a more abstract construction, and that the radical exemplar model developed by Ambridge (2019) could also explain our data.
Establishing an empirical equation for the relationship between total suspended solids and total phosphorus concentrations in the downstream Red river water
Authors: Da Le Nhu , Quynh Le Thi Phuong , Binh Phung Thi Xuan , Thuy Duong Thi , Thu Trinh Hoai , Hai Nguyen Thi , Huong Nguyen Thi Anh
Published: October 2020

Recently, the Asian rivers have faced the strong reduction of riverine total suspended solids (TSS) flux due to numerous dam/reservoir impoundment. The Red river system is a typical example of the Southeast Asian rivers that has been strongly impacted by reservoir impoundment in both China and Vietnam, especially in the recent period. It is known that the reduction in total suspended solids may lead to the decrease of some associated elements, including nutrients (N, P, Si) which may affect coastal ecosystems. In this paper, we establish the empirical relationship between total suspended solids and total phosphorus concentrations in water environment of the Red river in its downstream section from Hanoi city to the Ba Lat estuary based on the sampling campaigns conducted in the dry and wet seasons in 2017, 2018 and 2019. The results show a clear relationship with significant coefficient between total suspended solids and total phosphorus in the downstream Red river. It is expressed by a simple equation y = 0.0226x0.3867 where x and y stand for total suspended solids and total phosphorus concentrations (mg/l) respectively with the r2 value of 0.757. This equation enables a reasonable prediction of total phosphorus concentrations of the downstream Red river when the observed data of total suspended solids concentrations are available. Thus, this work opens up the way for further studies on the calculation of the total phosphorus over longer timescales using daily available total suspended solids values.
Record of the genera Versuriga and Cassiopea (Scyphozoa) in the coastal waters of Vietnam
Authors: Ha Tran Manh , Thu Pham The , Nishikawa Jun
Published: October 2020

Scyphozoans are currently causing great concern because of their blooms in the marine environment. During the field surveys in Cat Ba and Hon Me islands in 2019 and Thuy Trieu lagoon in June 2020, we found rhizostome jellyfish that had rarely recorded in Vietnamese waters. These specimens had the following morphological characters: Hemispherical umbrella with reticular grooves; eight large semicircular velar lappets alternating with narrow lappets in each octant; laterally flattened mouth-arms with numerous flat, membranous branches bearing many clubs and intermediate filaments; non-anastomosed broad perradial canals and anastomosed narrow interradial canals. The morphological characters of these rhizostome jellyfish were consistent with descriptions of Versuriga anadyomene. In addition, the morphology of some of other jellyfish bloomed in a marine lake was consistent with those of Cassiopea andromeda with a broad, shallow, aboral concavity; about 19 rhopalia; 4 square lappets per paramere; oral arms round in cross section, about 1.5 times as long as bell radius; 4–6 alternate branches, bifurcated distally; 1–2 appendages stemming from the central point of the disk, plus one at the base of each pair of oral arms, plus one at distal bifurcation of each oral arm or lacking; coloration yellow-brown with white or pale spots and streaks, size of the letter different with others (bigger), ocelli not observed. This paper reported the occurrence of rare scyphozoans, Versurigia anadyomene and Cassiopea andromeda in Vietnamese waters.
Species composition and distribution of marine macro algae at Co To and Thanh Lan archipelago
Authors: Tien Dam Duc , Anh Nguyen Thi Mai , Nguyen Linh Manh , Hue Pham Thu , Liao Lawrence
Published: October 2020

This paper exhibites species composition and distribution of marine seaweed at 10 sites of Co To and Thanh Lan islands in May 2019. The studies record 76 species of marine algae in the area, belonging to four divisions: Cyanophytes, Rhodophytes, Ochrophytes and Chlorophytes. Among them, five species are classified into Cyanophytes (comprising 6.6% of total species); thirty-four species into Rhodophytes (44.7%); twenty-one species into Ochrophytes/Phaeophytes (27.6%) and sixteen species into Chlorophytes (21.1%). The species composition of marine seaweeds in Co To and Thanh Lan shows significant differences as follows: 22 species (sites number 4 and 10) to 58 species (site number 2) and the average value is 38.7 species per site. Sørensen similarity coefficient fluctuates from 0.33 (sites number 5 and 10) to 0.84 (sites number 1 and 3) and the average value is 0.53. The current investigations show that four species of twenty-one species are collected in the littoral zone and forty-two species in the sub-littoral zone (in which there are thirteen species distributed in both littoral zone and sub-littoral zone). The algal flora in Co To and Thanh Lan is characterized by subtropics.
Pracownicze plany kapitałowe jako mechanizm poprawy adekwatności systemu emerytalnego w Polsce
Authors: Filiczkowska Joanna , Jedynak Tomasz
Published: October 2020

Objective: The article assesses the impact of employee capital plans (ECP) on the adequacy of pensions in Poland. On the basis of three dimensions of adequacy, the following research questions were formulated: To what extent will ECP affect the growth of future replacement rates in the Polish pension system? Will ECP affect the reduction of poverty of the elderly people in Poland? Will ECP reduce the gender pension gap? An attempt to provide comprehensive answers to these questions is the specific objective of the study.Research Design & Methods: The research methods used include meta-analysis of previous studies, statistical analysis of data published by public institutions, and the analysis of law from an economic perspective. Conclusions are based on inductive reasoning based on the synthesis of the results of the individual research methods.Findings: It is not clear from the research if introducing ECP improves the income adequacy of the Polish pension system, though it may do so narrowly, by smoothing consumption in individual terms. However, taking into account the multidimensional approach to the adequacy of pensions, this solution has proven ineffective. Specifically, ECPs do not contribute to reducing the scale of poverty among pensioners or eliminating gender inequalities.Implications / Recommendations: ECPs should be treated as an instrument for improving the amount of future retirement benefits for a part of society, and not as a tool to effectively improve the multi-dimensional income adequacy of the Polish pension system.Contribution: Examination and assessment of the impact of introducing ECPs on the income adequacy of the Polish pension system.
Conditions for Innovation of Public Sector Organisations Based on Selected Primary Schools
Authors: Wodecka-Hyjek Angelika
Published: October 2020

Objective: The aim of this article is to present and analyse the results of pilot studies relating to the diagnosis and evaluation of conditions for innovation of public sector organisations based on selected primary schools operating in a large city in Małopolskie Voivodeship, Poland.Research Design & Methods: The theoretical part of the article was based on the literature on the subject, both Polish and foreign. The pilot study was carried out by means of a guided, semi-structured interview with 17 teachers from four primary schools in Małopolskie Voivodeship, Poland. Undoubtedly, the results of the study have numerous limitations, which result mainly from the pilot nature of the survey and its limited scope (only selected teachers from four primary schools in a large city were willing to participate in the survey and were interviewed). Therefore, the results cannot be generalised and their analysis should be approached from a critical perspective.Findings: In the schools analysed, both the teachers and the management are aware of the importance of innovations in building the position of the school on the market of educational services, as well as of the fact that they are a key factor in teachers’ personal development. The innovation policy in the schools was generally known, while teachers are inspired to seek and implement innovations, and the attitude of the management in the majority of cases stimulates the creativity of the teachers, which is additionally supported by tangible or intangible incentives, e.g. commendations or awards.Implications / Recommendations: New ideas and solutions undoubtedly improve the teaching process, which is appreciated both by students and by their parents. In the primary schools participating in the study, the most important sources of innovation were the teachers, their level of knowledge, competence, creativity, commitment and personality.Contribution: Given the clear need for changes in the education sector, the study of innovation in primary schools is important and insufficiently recognised in Poland.
The Moderating Role of Perceived Organisational Support in the Relationship between Employees’ Entrepreneurial Orientation and Organisational Commitment
Authors: Wójcik-Karpacz Anna , Karpacz Jarosław
Published: October 2020

Objective: The purpose of this article is to analyse the moderating role of perceived organisational support (POS) in the relationship between employees’ entrepreneurial orientation (EEO) and organisational commitment (OC).Research Design & Methods: The research is aimed at determining the role of POS and EEO in explaining differences in employees’ commitment to a given organisation. The set of research proposals identifies (1) how employees’ entrepreneurial orientation and organisational commitment are related to each another and (2) how the relationship between employees’ entrepreneurial orientation and organisational commitment is moderated by perceived organisational support. The method used to carry out the quantitative empirical research was CAWI (Computer Assisted Web Interviews). The conceptual framework for this research was the theory of perceived organisational support. The project was funded by the National Science Centre in Poland (funds allocated on the basis of a decision no. DEC-2014/15/B/HS4/04326).Findings: The research provides knowledge about entrepreneurial personality in determining employees’ commitment to their organisation. At the same time, it identifies the role of POS as a moderator of the EEO-OC relationship.Implications / Recommendations: The results of the research allow for a better understanding of entrepreneurship and strengthen its theoretical foundations as an individual-level construct that determines organisational commitment. In addition, the description of the moderation effect (POS as a moderating variable) helps to better explain and predict the relationships between EEO and OC. Managers must pay more attention to the supportive organisational environment because of its effect on the strength of employees’ entrepreneurial orientation and its impact on their organisational commitment. The research results encourage further analyses on EO in vertical, horizontal and temporal dimensions in various size enterprises and their business profiles.Contribution: The article presents arguments which enable the recognition of employees’ entrepreneurial orientation as a determinant of organisational commitment and adding POS to the list of factors moderating the relationship between employees’ entrepreneurial orientation and organisational commitment. In addition, the research proves that the age of employees is positively related to their commitment to the organisation (the older they were, the more committed to the enterprise), while seniority is negatively related to organisational commitment (the more seniority employees had, the less committed they were).
Zarządzanie zyskiem w przemysłowych spółkach publicznych ukaranych przez Komisję Nadzoru Finansowego za nieprawidłowości w zakresie przestrzegania wytycznych MSR/MSSF
Authors: Comporek Michał
Published: October 2020

Objective: The main aim of the paper is to analyse practices in the area of accrual-based earnings management in industrial joint-stock companies, among which the PFSA has detected irregularities in the failure to fulfill the obligation to provide information.Research Design & Methods: An analysis of total and current discretionary accrual, extracted using the Jones and Dechow-Dichev models, was used to determine the magnitude and directions of accrual-based earnings management.Findings: The empirical research shows that the companies studied predominantly use strategies to intentionally reduce the net financial results they report. It has been proved that the values of discretionary accruals determined for the periods for which irregularities were found clearly differed from the values of discretionary accruals estimated for earlier and later periods.Implications / Recommendations: Significant deviations of the DACC and DCACC indicators observed from year to year can be seen as a warning signal indicating that fraudulent accounting practices may be occurring.Contribution: The study contributes to the science by contributing to the search for increasingly precise tools to enable the assessment of qualitative features of financial statements of companies from the Polish capital market.
Ocena wdrożenia procedur raportowania schematów podatkowych na przykładzie wybranych przedsiębiorstw
Authors: Hyży Maciej Leszek
Published: October 2020

Objective: The purpose of the article is to evaluate the tax scheme reporting procedures selected companies use.Research Design & Methods: Legal acts, the subject literature and a case study were analysed.Findings: The study shows that the implementation of tax scheme reporting procedures offers both advantages and disadvantages. The main advantage is that the procedures have enabled more effective tax risk management. The main drawback is that in all of the entities surveyed, the management board and heads of finance and accounting departments had problems understanding the terms used in the tax code related to tax patterns.Implications / Recommendations: The research shows that the effective implementation of tax scheme reporting procedures enables more effective tax risk management. Further research is needed, with a view to showing that implementing tax reporting procedures mitigates the risk of making a mistake when reporting tax schemes.Contribution: The original contribution of the article is its presentation and characterisation of the elements of the tax patterns reporting procedure.
Rachunek kosztów jakości w wybranym przedsiębiorstwie usługowym
Authors: Sadkowski Wojciech
Published: October 2020

Objective: The  article presents the calculation of quality costs, rules for its implementation and estimation, as well as an example application of this calculation in a selected service enterprise.Research Design & Methods: Empirical research on the practical application of a quality costs calculation was carried out in a service enterprise operating on the Kraków market.Findings: The implementation of a quality costs calculation in a selected service enterprise made it possible to provide information on quality costs and the relationships between groups of these costs as well as to indicate problem areas.Implications / Recommendations: Advanced service processes, high customer requirements for quality services, and fierce competition mean that the cost information provided by traditional accounting systems is insufficient for the right decisions to be made in enterprises. It is therefore necessary to implement new cost accounting systems that provide reliable information on quality-related costs. Calculating quality costs as cost accounting provides authentic information about these costs, and can be used as a tool supporting the management process. The implementation of this calculation enables enterprises to increase the efficiency of the processes, optimise costs and increase overall unit efficiency.Contribution: The results obtained should constitute the theoretical and practical basis for implementing this calculation in any service enterprise.
RIEMANN AND DIOPHANTINE’S CONTRIBUTION IN THE FIELD OF NUMBER THEORY
Authors: Kumar Pratik , Kumar Vikas , Ahmed Md Saad , Tiwari Rajnish , Saquib Md
Published: October 2020

There have been several fascinating applications of Number Theory in key cryptography. Key cryptography enables many technologies we take for granted, such as the ability to make secure online transactions. The purpose of this survey paper is to highlight certain important such applications.
Prime numbers constitute an interesting and challenging area of research in number theory. Diophantine equations form the central part of number theory. An equation requiring integral solutions is called a Diophantine equation. In the first part of this paper, some major contribution in number
theory using prime number theorem is discussed and some of the problems which still remains unsolved are covered. In the second part some of the theorems and functions are also discussed such as Diophantine Equation, Goldbach conjecture, Fermats Theorem, Riemann zeta function and his hypothesis
that still remain unproved to this day . The Chinese hypothesis is a special case of Fermat’s little theorem. As proved later in the west, the Chinese hypothesis is only half right . From the data of this study we conclude that number theory is used in computer network and applications
in cryptography. We came to know about the purpose of Diophantine equation , Square-free natural number, Zeta function, Fermat’s theorem and Chinese hypothesis which is a special case for Fermat’s theorem.
SUMMATION FORMULAE INVOLVING BASIC HYPERGEOMETRIC AND TRUNCATED BASIC HYPERGEOMETRIC FUNCTIONS
Authors: Kaur Harwinder , Shrivastav A.K.
Published: October 2020

In this paper, making use of concept splitting the limits of summation identities and Bailey’s lemma, an attempt has been to establish the transformations involving Bailey’s lemma and Truncated Basic Hypergeometric Series.
ANALYSIS OF SYSTEM RELIABILITY OF AN ILLUMINATED DARK ROOM BY TIT2FNS FUZZY DATA WITH SOME OF ITS ARITHMETIC OPERATIONS
Authors: Kar Rahul , Shaw A.K.
Published: October 2020

According to modern view uncertainty is considered essential to science and technology, it is not only the unavoidable plague but also it has impact a great utility. Generally, fuzzy sets are used to analyse fuzzy system reliability. To analyse the fuzzy system reliability, the reliability
of each component of the system is considered as a Triangular intuitionistic Type 2 fuzzy number (TIT2FN). At first, TIT2FN and their arithmetic operations are introduced. Expressions for computing the fuzzy reliability of a series system and a parallel system following TIT2FN have been described.
Here, an imprecise reliability model of an electric network model of a dark room is taken. To compute the imprecise reliability of the above said system, the reliability of each component of the systems is represented by TIT2FN. A corresponding numerical example is presented.
COMPARISON OF NUMERICAL METHODS IN PREDICTING THE GROWTH OF NORMAL AGRICULTURAL ASSETS
Authors: Abanum Godspower C.
Published: October 2020

In this paper, I considered the comparison of numerical methods in predicting the biodiversity gain due to the variation of α1 and α2 together on biodiversity scenario. However, when the model parameter values α1
and α2 are increase, the normal agricultural variable also changes. By comparing the patterns of growth in these two interacting normal agricultural data, we have finite instance of biodiversity due to the application of four numerical methods such as ODE45, ODE23,
ODE23tb and ODE15s. We have found the numerical prediction upon using these four numerical methods which are similar and robust, hence we have considered ODE45 numerical simulation to be computationally more efficient than the other three methods. The novel result we have obtained in this
study have not been seen elsewhere.
A REVIEW ON CRYPTOCURRENCY: THE VOLATILITY OF BITCOINS
Authors: Gupta Vikash , Rungta Shrey , Soni Vishnu
Published: October 2020

This study seeks to analyze conceptual, innovative, marketing and quantitative aspects of Bitcoin (BTC) and how these are reflected in the volatility of its return. After describing basic concepts of digital currencies and BTC, an electronic currency created in 2009, we contextualize
BTC as a financial innovation. A purely peer-to-peer version of electronic cash would allow online payments to be sent directly from one party to another without going through a financial institution .We propose a solution to the double-spending problem using a peer-to-peer network. The longest
chain not only serves as proof of the sequence of events witnessed, but proof that it came from the largest pool of CPU power. As long as a majority of CPU power is controlled by nodes that are not cooperating to attack the network, they'll generate the longest chain and outpace attackers.
The network itself requires minimal structure. Messages are broadcast on a best effort basis, and nodes can leave and rejoin the network at will, accepting the longest proof-of-work chain as proof of what happened while they were gone In my contribution I want to analyses this currency-system
from a sociocy bernetic point of view .After presenting the basic mechanisms of Bitcoin money creation, the value regulation etc. We want to focus the basic processes of self-organization in this high-complex social system.
MATHEMATICAL MAT SCORE PREDICTION & POST-MAT ACADEMIC PERFORMANCE ANALYSIS ON MANAGEMENT STUDENTS
Authors: Samim Ferdows Sk. , Dey Joydeep , Nag Akash , Sahin Ferdows Sk. , Karforma Sunil
Published: October 2020

In India, the Management Aptitude Test (MAT) score is taken as the primary indicator of a student’s ability to be enrolled in the management courses. It has been observed in many cases during the group discussion and personal interview phases for MBA course admission, that candidate
with poor MAT scores do well than those with higher scores. Hence, in that context, this research was carried out in order to assess the validity of MAT scores in predicting future success and also to measure the nature and strength of association between MAT scores and academic achievements.
We also look at the correlation between students’ academic performance in their higher-secondary & under-graduate levels, and their MAT scores.
Evidence on Nursing Administration Epistemology
Authors: Meneses Abel Silva de , Cunha Isabel Cristina Kowal Olm
Published: October 2020

ABSTRACT Objective: Reflecting critically on the epistemological aspects of the of knowledge construction on Nursing Administration in Brazil. Methods: This is an article of theoretical reflection that aims to assess the epistemological aspects of the construction of knowledge about Nursing Administration. Results: The knowledge about Nursing Administration has a long way to go, as its epistemological repertoire is still timid. In addition, the lack of distinction of this knowledge in the communication of research products underestimates the production on Nursing Administration, as these products appear diluted in other areas of Nursing (care, research, and teaching). Final considerations: Due to the reflections, the need for new scientific evidence is highlighted, whose formulation of research questions can contribute to the delineation of phenomena that distinguish Nursing Administration as an area of research knowledge.
Physical activity in periods of social distancing due to COVID-19: a cross-sectional survey
Authors: Martinez Edson Zangiacomi , Silva Fabrícia Mabelle , Morigi Thais Zanin , Zucoloto Miriane Lucindo , Silva Thaise Lucena , Joaquim Anderson Gregorio , Dall’Agnol Gabriela , Galdino Guilherme , Martinez Maisa Oliveira Zangiacomi , Silva Wanderson Roberto da
Published: October 2020

Abstract Physical inactivity and sedentary behavior are associated with poor physical and mental health. The article aims to assess the changes in the habits of the Brazilian participants engaged in physical activities in relation to their practices, due the measures of social distancing during the COVID-19 epidemic in 2020. The secondary objective was to describe their levels of anxiety and depression. The questionnaire used in this online survey included demographic information, questions about self-perceptions of the impact of the COVID-19 in the life routines and the 14-item Hospital Anxiety Depression Scale. A total of 1,613 adults completed the questionnaire between May 11 and 15, 2020. Of those, 79.4% reported that the measures to contain the epidemic had any impact on their physical activities, and many had to interrupt or decrease the frequency of their practices. Participants who felt a higher impact of quarantine on their physical activities tend to have higher prevalence of anxiety and depression symptoms. Individuals who practiced physical activities reported that social distance had a high influence on their practices. Furthermore, changes in these habits are associated with high levels of poor mental health.
Lifestyle behaviors changes during the COVID-19 pandemic quarantine among 6,881 Brazilian adults with depression and 35,143 without depression
Authors: Werneck André Oliveira , Silva Danilo Rodrigues da , Malta Deborah Carvalho , Souza-Júnior Paulo Roberto Borges de , Azevedo Luiz Otávio , Barros Marilisa Berti de Azevedo , Szwarcwald Célia Landmann
Published: October 2020

Abstract Our aim was to analyze the association between previously diagnosed lifetime depression and changes in physical activity (PA), TV-viewing, consumption of fruits and vegetables as well as frequency of ultra-processed food (UPF) consumption. Data of 41,923 Brazilian adults (6,881 with depression and 35,042 without depression) were used. Participants reported PA (≥ 150 min/week), TV-viewing (≥ 4 h/day), frequency of eating fruits or vegetables (≤ 4 days/week) and UPF (≥ 5 days/week). For incidence indicators, we only considered participants without the risk behavior before the quarantine. People without and with depression presented, respectively, incidence of physical inactivity [70.1% (95%CI: 67.4-72.8) vs 76.3 (70.3-81.5)], high TV-viewing [31.2 (29.6-32.8) vs 33.9 (30.5-37.4)], low frequency of fruit or vegetable consumption [28.3 (25.8-31.0) vs 31.5 (26.1-37.5)] and elevated frequency of UPF consumption [9.7 (8.9-10.7) vs 15.2 (13.0-17.7)]. Participants with depression were more likely to present elevated frequency of UPF consumption incidence [OR:1.49 (95%CI:1.21-1.83)]. Thus, participants with previous diagnosis of depression were at risk for incidence of unhealthy diet behaviors.
COVID-19 no Nordeste brasileiro: sucessos e limitações nas respostas dos governos dos estados
Authors: Kerr Ligia , Kendall Carl , Silva Antônio Augusto Moura da , Aquino Estela Maria L , Pescarini Julia M , Almeida Rosa Lívia Freitas de , Ichihara Maria Yury , Oliveira Juliane F , Araújo Thália Velho Barreto de , Santos Carlos Teles , Jorge Daniel Cardoso Pereira , Miranda Filho Demócrito de Barros , Santana Guilherme , Gabrielli Ligia , Albuquerque Maria de Fatima Pessoa Militão de , Almeida-Filho Naomar , Silva Natanael de Jesus , Souza Rafael , Ximenes Ricardo Arraes de Alencar , Martelli Celina Maria Turchi , Brandão Filho Sinval Pinto , Souza Wayner Vieira de , Barreto Maurício Lima
Published: October 2020

Resumo No Brasil, a pandemia da COVID-19 tem sido severa nos estados das regiões mais pobres, como o Nordeste. A falta de políticas nacionais para controle da pandemia levou as autoridades estaduais e municipais a implementarem medidas de saúde pública. O objetivo deste estudo é mostrar o efeito dessas medidas na epidemia. A maior incidência da COVID-19 entre os nove estados do Nordeste foi registrada em Sergipe, Paraíba e Ceará. O Piauí, a Paraíba e Ceará foram os que mais testaram. Muitos estados apresentavam alta proporção de pessoas em trabalho informal. Estados com aeroportos internacionais tiveram importante papel na entrada e disseminação inicial do vírus, em especial o Ceará. Todos os estados aplicaram medidas de distanciamento social, proibição de eventos públicos e fechamento de unidades de ensino. As respostas foram o aumento significativo de distanciamento social, em especial Ceará e Pernambuco, a queda do número de reprodução (Rt) e a separação da curva dos casos observados da curva dos casos esperados sem as intervenções não medicamentosas em todos os estados. A pobreza, a desigualdade e as altas taxas de trabalho informal fornecem pistas do porquê da intensidade da COVID-19 na região. Por outro lado, as medidas de mitigação tomadas precocemente pelos governantes amenizaram os efeitos da pandemia.
Effect of a breastfeeding educational intervention: a randomized controlled trial
Authors: Souza Erdnaxela Fernandes do Carmo , Pina-Oliveira Alfredo Almeida , Shimo Antonieta Keiko Kakuda
Published: October 2020

Objective: to assess the effect of a breastfeeding educational intervention on the counseling provided to postpartum women. Method: this is a randomized controlled trial including 104 postpartum women (intervention group = 52 and control group = 52) from a private hospital, whose educational intervention was based on the pragmatic theory and on the use of a soft-hard technology called Breastfeeding Educational Kit (Kit Educativo para Aleitamento Materno, KEAM). Women were followed-up for up to 60 days after childbirth. Chi-Squared Test, Fischer’s Exact Test, and Generalized Estimating Equation were used, with a significance level of 5% (p-value <0.05). The analyses were performed using the Statistical Package for the Social Sciences, version 24. Results: the postpartum women in the intervention group had fewer breastfeeding difficulties and a higher percentage of exclusive breastfeeding at all time points compared with those in the control group. Conclusion: the educational intervention based on active methodologies and stimulating instructional resources was effective in developing greater practical mastery among postpartum women with regard to adherence and maintenance of exclusive breastfeeding. Registry REBEC RBR – 8p9v7v.
Economic and epidemiological evaluation of text message-based interventions in patients with the Human Immunodeficiency Virus
Authors: Santos Wendel Mombaque dos , Primeira Marcelo Ribeiro , Paiva Larissa Garcia de , Padoin Stela Maris de Mello
Published: October 2020

Objective: to evaluate the cost-effectiveness ratio and the budget impact of sending text messages associated with medical consultations in order to reduce the viral load of patients infected with the Human Immunodeficiency Virus. Method: a randomized clinical trial, basis for the development of a dynamic cohort model with Markov states in order to compare medical appointments for adults infected with the Human Immunodeficiency Virus versus the alternative strategy that associated medical consultations to sending text messages through telephone. Results: 156 adults participated in the study. As for the viral load, it was verified that in the control group there was an increase, in the intervention group A (weekly messages) there was a reduction (p = 0.002) and in group B (biweekly messages) there was no statistically significant difference. Sending text messages would prevent 286,538 new infections by the Human Immunodeficiency Virus and 282 deaths in the 20-year period, compared to the standard treatment. The alternative strategy would result in saving R$ 14 billion in treatment costs. Conclusion: weekly sending messages in association with the standard treatment can reduce the circulating viral load due to its effect in decreasing new infections, in addition to reducing health costs.
Professional interaction in management of the triad: Permanent Education in Health, patient safety and quality
Authors: Koerich Cintia , Erdmann Alacoque Lorenzini , Lanzoni Gabriela Marcellino de Melo
Published: October 2020

Objective: to understand how professional interaction takes place in the hospital organizational structure for the management of Permanent Education in Health, to guarantee patient safety and the quality of nursing care. Method: this is a qualitative study, which used the structuralist aspect of the Grounded Theory as a methodological framework. 27 interviewers participated in the study, who made up four sample groups. Results: six categories and 13 subcategories were presented, representing the studied phenomenon and highlighting particularities of the public health system and the influence of the manager’s support and management priority, the disposition of the organizational structure, the institutional culture, the external encouragement to institution, and the nurses’ initiative and leadership in the professional interaction for the management of the Permanent Education in Health, patient safety, and quality of care triad, revealing the need for cultural change through interdisciplinarity. Conclusion: the professional interaction in the hospital organizational structure requires the creation of new management models with an emphasis on more participative management, in order to improve the care processes in hospital institutions.
New records of ants (Hymenoptera: Formicidae) for Colombia
Authors: García Emira I. , Tocora María C. , Fiorentino Gianpiero , Escárraga Mayron E. , Fernández Fernando , Guerrero Roberto J.
Published: October 2020

Abstract Even though Colombia has high levels of ant species richness in the Neotropical region, this richness continues to increase. New records of the ant subfamilies Amblyoponinae, Dolichoderinae, Dorylinae, Myrmicinae, and Ponerinae are presented. Two species of Fulakora, two species of Azteca, one species of Cylindromyrmex, 25 species of Myrmicinae belonging to 12 genera (Acanthognathus, Basiceros, Daceton, Eurhopalothrix, Hylomyrma, Mycetomoellerius, Mycetophylax, Mycocepurus, Octostruma, Pheidole, Rogeria, and Talaridris), and one species of Leptogenys are registered for the first time for Colombia. Five species are new records for South America. For each species, the geographical distance of the record closest to the Colombian locality is offered. Several factors, such as access to previously unexplored conserved areas, sampling techniques that cover heterogeneous microhabitats such as leaf litter, and many more taxonomic researches have allowed the knowledge of ant fauna in Colombia to continue growing.
Gastrointestinal emergency care during the COVID-19 pandemic: rapid communication
Authors: Leite Carine , Trindade Eduardo Neubarth , Grillo Leonardo Wagner , Trindade Manoel Roberto Maciel
Published: October 2020

SUMMARY OBJECTIVE: Social distancing during the COVID-19 pandemic has been associated with a decrease in the search for medical care. High-risk patients have avoided hospital environments fearing infection. We hypothesize that there was also a decrease in the search for medical care related to gastrointestinal emergencies. The aim of this study is to evaluate the frequency of consultations for severe gastrointestinal emergencies during and before the months of the pandemic. METHODS: This was a transversal study. The inclusion criteria were cases of consultation in the emergency department for gastrointestinal diseases that required hospitalization, from January to April, from 2015 to 2020. The pediatric population (under age 12) was excluded. RESULTS: A total of 2,457 cases of cases was included. The number of emergency hospitalizations for gastrointestinal cases decreased during the first four months of 2020: 108, 112, 82, and 77, respectively. Comparing April of 2020 with previous years, there was a lower than expected number of cases during the social distancing period (P=0.002). CONCLUSION: This study reports a pronounced decrease in consultations for severe gastrointestinal emergencies during the pandemic. Governments and society should be aware that health crises do not halt the natural occurrence of noninfectious diseases; otherwise, an increase in mortality from these morbidities may arise.
Tubulovillous adenoma of the duodenal papilla: radiological-endoscopic and anatomopathological correlation in the surgical proposal
Authors: Fernandes Daniel Alvarenga , Boteon Yuri Longatto , Boteon Amanda Pinter Carvalheiro da Silva , Sousa Rachid Marwan Pinheiro , Martins Daniel Lahan , Penachim Thiago José , Barros Ricardo Hoelz de Oliveira , Martins Rita de Cássia Perina , Costa Larissa Bastos Eloy da , Cazzo Everton , Gestic Martinho Antônio , Chaim Elinton Adami , Caserta Nelson Marcio Gomes
Published: October 2020

SUMMARY Tubulovillous adenomas of the duodenal ampulla are rare neoplasms. The present report describes a case with radiological-endoscopic and pathological correlation in which the patient underwent duodenal pancreatectomy with good postoperative progression. With advanced imaging methods, especially magnetic resonance and endoscopic ultrasound, locoregional aspects and extraluminal, lymphovascular, and metastatic invasion have been increasingly discussed as contributors to therapeutic decision making. This progression improves lesion staging and is especially useful in selecting eligible candidates for endoscopic treatment.