bluuebunny/crossref_metadata_2025_split huggingface dataset:
Self-assessment of Information and Communication Technology (ICT) Competence Needs Among Student-Teachers Using UNESCO ICT-CFT in Colleges of Education in North Central, Nigeria
Authors: Onuyi Anaza, Abdulmumuni 
Published: May 2021

Purpose: The objective for the study was using the fourth level of UNESCO ICT-CFT on the technology literacy approach to determine student-teachers’ self-assessment of ICT competency needs in colleges of education.
Methodology: The study adopted the descriptive research of cross-sectional survey type.
Three research questions and two hypotheses were drawn. A total of 1,211 student-teachers were randomly selected from 11 colleges of education in North-central, Nigeria. Data were collected through administration of validated questionnaire adapted from UNESCO ICT-CFT. Mean was used to answer the research questions 1-3 while t-test and Kruskal Wallis were used to test hypotheses one and two respectively.
Findings: The result revealed that based on the fourth level of the Technology Literacy approaches of UNESCO ICT-CFT, student-teachers in the colleges of education have high ICT competence needs; there was a significant difference among male and female student-teachers ICT competence needs in ICT integration; also, there was significant differences in area of specialization of student-teachers ICT competence needs in ICT integration.
Unique contribution to theory, practice and policy: The study therefore recommended that government in collaboration with private sector should provide student-teachers with the required ICT needs to be at par with their counterpart from other parts of the world; government and authorities of colleges of education should take into consideration female student-teachers while planning to integrate ICT in colleges of education and in procurement of ICT facilities; and student-teachers area of specialization should be taken into consideration during the purchase of ICT facilities for student-teachers use in colleges of education.
Key Words: Self-assessment, ICT, ICT Competence Needs, UNESCO ICT-CFT, Colleges of education.
PLURALISME PRINSIPIIL DAN REFLEKSINYA TERHADAP PANCASILA
Authors: Wuysang Chias Yohanes , Intan Benyamin 
Published: May 2021

This article uses theological-ethical approach to focus on the presentation of the relationship of religion and state in the concept of principled pluralism and provides a reflection on the life of the nation and state in Indonesia which has Pancasila. The theological basis used as a reference is the Reformed theology of the Neo-Calvinism wing which was pioneered by Abraham Kuyper and forwarded by ideas from Kuyperians such as Gordon Spykman, James Skillen, Jonathan Chaplin. The author will argue that Pancasila is in harmony with principled pluralism.
KEY WORDS: principled pluralism, structural pluralism, confessional pluralism, Pancasila.
WHAT CAN WE LEARN FROM THE IMITATION OF CHRIST OF THOMAS A KEMPIS?
Authors: Rachmadi Tirza 
Published: May 2021

This article seeks to promote an interest of the audience to read the Imitation of Christ, the second most read book by both Protestants and Roman Catholics after the Bible. The book is dated to pre-Reformation time and provides fruitful soil for the Reformation by keeping close to the Scripture and the primacy of Christ. The book’s three main motives sound strangely familiar to modern ears: the basic pairs of opposition coloring the current fabric of reality, the sovereignty of God, and the obedience of God’s people. Even today the book remains fresh with its honesty and practical value, despite its being firmly grounded in doctrinal rocks.
KEYWORDS: Imitation of Christ; Thomas a Kempis; practical theology
The speleothem oxygen record as a proxy for thermal or moisture changes: a case study of multiproxy records from MIS 5–MIS 6 speleothems from the Demänová Cave system
Authors: Pawlak Jacek 
Published: May 2021

Abstract. Speleothems are an important source of palaeoclimatic information about the terrestrial environment. The basic advantages of speleothems are their
high preservation potential, the possibility of precise dating using the uranium-series (U-series) method, and many different proxies, such as stable isotopes, trace
elements, and microfabrics, which can be interpreted in terms of palaeoclimatic conditions. Currently, central Europe is located in a transitional
climate zone under the influence of both oceanic and continental climates. However, in the past, the region could have been under a stronger
continental climate influence during cold glacial episodes or a stronger oceanic climate influence during wetter interglacial episodes. Long-term
speleothem records can add new beneficial data about past climate changes in the region. The multiproxy record of the JS9 stalagmite, collected in the
Demänová Cave system (Slovakia), represents a ca. 60 kyr period (143–83 ka). A multiproxy interpretation of the JS9 record
shows that long-term δ18O trends can be interpreted as global/regional temperature changes, whereas short-term δ18O
signals reflect changes in humidity. In contrast to the records from the Alps and the northern Tatra Mountains, the δ18O record of
speleothem JS9 shows instantaneous decreasing episodes during Termination II. This indicates that the Carpathian Belt was an important climatic
barrier at that time.
Last interglacial sea-level history from speleothems: a global standardized database
Authors: Dumitru Oana A. , Polyak Victor J. , Asmerom Yemane , Onac Bogdan P. 
Published: May 2021

Abstract. Speleothems (secondary cave carbonate precipitates) are archives
of valuable information for reconstructing past sea levels as they are
generally protected from weathering and erosion by their location and can be
dated with U-series methods. Two main categories of speleothems are
recognized as sea-level indicators: phreatic overgrowth on speleothems (POSs)
and submerged vadose speleothems (SVSs). POSs have the great advantage that
they precipitate on preexisting supports (vadose speleothems or cave walls)
at a brackish water level equivalent to sea level when air-filled chambers
of coastal caves are flooded by rising sea. SVSs are also useful, but sea
level is inferred indirectly as periods of growth provide constraints on
maximum sea-level positions, whereas growth hiatuses, sometimes difficult to
observe, may indicate times when cave passages are submerged by sea
highstands; hence they record minimum sea-level elevations. Here we describe a compilation that summarizes the current knowledge of the
complete last interglacial (in its broadest sense from ∼ 140 to 70 ka, also known as marine isotope stage (MIS) 5) sea level captured
by speleothems. We used the framework of the World Atlas of Last
Interglacial Shorelines (WALIS), a comprehensive sea-level database, to
provide a standardized format in order to facilitate scientific research on
MIS 5 sea level. The discussion is focused on MIS 5e, but records that
capture MIS 5d, 5c, 5b, and 5a are also included. We present the data from
71 speleothems (36 sea-level index points and 37 limiting points) in coastal
caves located in 10 different locations, and we include the spatial
coverage, the samples used, and their accuracy as indicators of sea level, U
and Th isotopes used to generate the chronologies, and their scientific
relevance to understand past sea-level changes. Furthermore, the paper
emphasizes the usefulness of these indicators not only to render information
regarding the eustatic sea level, but also for their contribution to refine
the glacial isostatic adjustment models and to constrain regional tectonic
uplift rates. The standardized sea-level database presented here is the
first of its kind derived from speleothems and contains all the information
needed to assess paleo relative sea levels and the chronological constraints
associated with them. The database is available open-access at
https://doi.org/10.5281/zenodo.4313860 (Dumitru et al., 2020). We refer the
readers to the official documentation of the WALIS database at
https://walis-help.readthedocs.io/en/latest/ (last access: 20 January 2021), where the meaning of each field
is explained in detail.
Construction of homogenized daily surface air temperature for the city of Tianjin during 1887–2019
Authors: Si Peng , Li Qingxiang , Jones Phil 
Published: May 2021

Abstract. Century-long continuous daily observations from some
stations are important for the study of long-term trends and extreme climate
events in the past. In this paper, three daily data sources – (1) the Department
of Industry Agency of the British Concession in Tianjin covering 1 September 1890–31 December 1931, (2) the Water Conservancy Commission of North China covering 1 January 1932–31 December 1950 and (3) monthly journal sheets for Tianjin surface
meteorological observation records covering 1 January 1951–31 December 2019 – have been
collected from the Tianjin Meteorological Archive. The completed daily
maximum and minimum temperature series for Tianjin from 1 January 1887 (1 September
1890 for minimum) to 31 December 2019 has been constructed and assessed for
quality control with an early extension from 1890 back to 1887. Several
significant breakpoints are detected by the penalized maximal T test (PMT)
for the daily maximum and minimum time series using multiple reference
series around Tianjin from monthly Berkeley Earth (BE), Climatic Research Unit
Time-Series version 4.03 (CRU TS4.03) and Global
Historical Climatology Network (GHCN) v3
data. Using neighboring daily series the record has been homogenized with
quantile matching (QM) adjustments. Based on the homogenized dataset, the
warming trend in annual mean temperature in Tianjin averaged from the newly
constructed daily maximum and minimum temperature is evaluated as
0.154 ± 0.013 ∘C per decade during the last 130 years.
Trends of temperature extremes in Tianjin are all significant at the 5 %
level and have much more coincident change than those from the raw data, with
amplitudes of −1.454, 1.196, −0.140 and 0.975 d per decade for cold nights (TN10p), warm
nights (TN90p), cold days (TX10p) and warm days (TX90p) at the annual scale. The adjusted daily maximum, minimum and mean surface air temperature dataset for Tianjin city presented here is publicly available at
https://doi.org/10.1594/PANGAEA.924561 (Si and Li, 2020).
Reply to Norini and Groppelli's comment on “Estimating the depth and evolution of intrusions at resurgent calderas: Los Humeros (Mexico)” by Urbani et al. (2020)
Authors: Urbani Stefano , Giordano Guido , Lucci Federico , Rossetti Federico , Carrasco-Núñez Gerardo 
Published: May 2021

Abstract. Structural studies in active caldera systems are widely used in
geothermal exploration to reconstruct volcanological conceptual models.
Active calderas are difficult settings to perform such studies mostly
because of the highly dynamic environment, dominated by fast accumulation of
primary and secondary volcanic deposits, the variable and transient rheology
of the shallow volcanic pile, and the continuous feedbacks between faulting,
secondary porosity creation, and geothermal fluid
circulation, alteration and cementation that tend to obliterate the tectonic
deformation structures. In addition, deformation structures can be also
caused by near- and far-field stress regimes, which include magmatic
intrusions at various depths, the evolving topography and regional
tectonics. A lack of consideration of all these factors may severely
underpin the reliability of structural studies. By rebutting and providing a
detailed discussion of all the points raised by the comment of Norini and
Groppelli (2020) to the Urbani et al. (2020) paper, we take the opportunity
to specify the scientific rationale of our structural fieldwork and
strengthen its relevance for geothermal exploration and exploitation in active
caldera geothermal systems in general and, particularly, for the Holocene
history of deformation and geothermal circulation in the Los Humeros
caldera. At the same time, we identify several major flaws in the approach
and results presented in Norini and Groppelli (2020), such as (1) the lack of
an appropriate ranking of the deformation structures considering an
inventory method for structural analysis; (2) the misinterpretation and
misquoting of Urbani et al. (2020) and other relevant scientific literature;
and (3) irrelevant and contradictory statements within their comment.
Factores que influyen en las acciones sustentables de la Bolsa Mexicana de Valores
Authors: Morales Castro José Antonio 
Published: May 2021

Los modelos que explican la formación del precio de las acciones de las compañías que cotizan en la Bolsa Mexicana de Valores se han probado principalmente para empresas convencionales. Considerando que las firmas sustentables están mejor preparadas para lidiar con los retos económicos, y por ello se supone son autónomas de las variables macroeconómicas, se prueba la hipótesis que establece que las variables fundamentales influyen con mayor magnitud que las variables macroeconómicas en la formación del precio de las acciones de 21 compañías sustentables de la Bolsa de Valores de México. Para ello se obtuvieron las regresiones múltiples para cada acción, y utilizando las betas tipificadas de cada ecuación que explica cada uno de los precios de las acciones, se encontró que sólo en tres empresas son los factores fundamentales los que influyen mayormente en los precios de las acciones y en las demás son los factores macroeconómicos principalmente.
EVOLUCIÓN DE LA EDUCACIÓN A DISTANCIA EN UNIVERSIDADES ARGENTINAS: INFLUENCIA DE LAS INNOVACIONES TECNOLÓGICAS
Authors: Rivero María Andrea , Da Silva Momo Fernanda , Behr Ariel , Pesce Gabriela 
Published: May 2021

Desde hace más de treinta años, las denominadas tecnologías de la información y de la comunicación han incursionado en el ámbito de la Educación a Distancia, la que se ha desarrollado en menor medida en países emergentes. En este contexto, la pregunta de investigación es la siguiente: ¿cuál es la influencia del desarrollo de innovaciones tecnológicas en la evolución histórica de la Educación a Distancia ofertada por Universidades Nacionales en la República Argentina? Este problema se aborda a través de un estudio descriptivo con un abordaje metodológico cualitativo y se operacionaliza por medio de un análisis documental, con datos disponibles en las páginas web de las 55 universidades públicas nacionales. Los resultados demuestran que la oferta de carreras y cursos virtuales ha presentado un crecimiento exponencial durante los últimos 17 años. Este crecimiento se encuentra correlacionado con el surgimiento e incorporación de estas tecnologías en el ámbito geográfico bajo estudio y está acompañado, con cierto diferimiento temporal, del desarrollo normativo que regula esta modalidad de educación en nivel superior. Si bien la sociedad argentina presenta mayor preferencia por la educación presencial, las innovaciones tecnológicas dan impulso a nuevas vías de comunicación y de transferencia de información. Estos factores permiten un futuro promisorio para la Educación a Distancia, si se logran explotar las potencialidades de estas tecnologías.
Planejamento e orçamento em instituições financeiras: um estudo em uma instituição de microfinanças de Pernambuco (Brasil)
Authors: Neto Herrisson Queiroz , Leitão Carla Renata Silva 
Published: May 2021

O artigo tem como objetivo descrever o processo de elaboração do orçamento em uma instituição financeira pernambucana. O orçamento pode ser considerado um instrumento essencial no planejamento financeiro de uma organização. No entanto, este instrumento precisa estar alinhado com os objetivos institucionais, respaldando os gestores nas decisões. Para a realização da pesquisa, utilizou-se como método o estudo de caso, com levantamento dos dados por meio de entrevista e análise documental. Os resultados obtidos revelaram envolvimento do quadro funcional, na etapa do planejamento, bem como a forma hierarquizada de acompanhamento e controle do orçamento. Pode-se ainda perceber que algumas características das práticas orçamentárias adotadas pela Instituição Financeira (na elaboração, execução e controle) estão de acordo com aquelas encontradas na literatura, como o alinhamento do orçamento ao planejamento estratégico e a realização da comparação dos valores orçados com o realizado, como forma de controle.
Administración de riesgos: análisis de un proceso de abastecimiento y gestión de insumos críticos
Authors: Daima Laura Itati 
Published: May 2021

Las organizaciones desarrollan sus actividades en contextos expuestos a infinidad de riesgos que amenazan su continuidad en el tiempo. El presente trabajo de investigación tiene como objetivo la realización de un diagnóstico de la administración de riesgos vinculados al suministro y gestión de insumos críticos para el proceso de producción de fertilizantes de una empresa industrial de la ciudad de Bahía Blanca, con la finalidad de desarrollar una matriz de riesgos que permita su gestión. En función del objetivo, se optó por un enfoque de carácter cualitativo y con propósito descriptivo a través del estudio de caso. Se identificaron los riesgos internos y externos a los que se encuentra expuesto el proceso analizado. Estos fueron presentados en la matriz de riesgos, lo que permitió detectar aquellos que poseen mayor criticidad y que requieren una acción de corrección inmediata. Finalmente, se propusieron acciones de control para gestionarlos.
PENERAPAN METODE COMPUTER BASED INSTRUCTION (CBI) PADA APLIKASI EDUKASI HERBAL
Authors: Murdani Murdani , Munthe Ibnu Rasyid , Suryadi Sudi 
Published: May 2021

Pembelajaran merupakan suatu konsep yang mencerminkan proses sesungguhnya. Jamu adalah sebutan untuk obat tradisional dari Indonesia. Belakangan populer dengan sebutan herba atau herbal. Jamu dibuat dari bahan-bahan alami, berupa bagian dari tumbuhan seperti rimpang (akar-akaran), daun-daunan, kulit batang dan buah. Jamu merupakan obat tradisional yang terbuat dari tanaman tumbuh – tumbuhan seperti : Jahe, tumbar, kayu manis, sambiloto dan kencur, serta diberikan pemanis yaitu gula dan madu. Computer Based Instruction (CBI) adalah sebuah pembelajaran terprogram yang menggunakan komputer sebagai sarana utama atau alat bantu yang mengkomunikasikan materi kepada siswa. Pada CBI komputer menjadi pusat pembelajaran (center of learning) dimana siswa berperan lebih aktif dalam mempelajari suatu materi dengan media utama komputer. Dalam hal ini materi pengajaran disusun secara sistematis dan dirancang dengan menggunakan bahasa pemrograman, perangkat lunak atau software Animasi (seperti macromedia flash).
PENGARUH KEKUATAN BENDING DAN TARIK BAHAN KOMPOSIT BERPENGUAT SEKAM PADI DENGAN MATRIK UREA FORMALDEHIDE
Authors: Raharjo Harini 
Published: May 2021

Tujuan penelitian adalah untuk mengetahui kekuatan bending dan impact yang optimal dari komposit berpenguat sekam padi bermatrik urea formaldehyde pada fraksi volume 40%, 50%, 60%, 70% dengan variasi ketebalan-ketebalan 5mm, 10mm, 15mm, 20mm, dengan perlakuan alkali serta mengetahui jenis patahan dengan pengamatan makro pada specimen yang memiliki harga optimal dari pengujian bending dan impact. Pembuatan dengan cara press mold, pengujian bending yang dilakukan dengan acuan standar ASTM D 790-02 dan impak charpy dengan acuan standart ASTM D 256-00. Hasil pengujian didapat pengaruh alkali 2, 4, 6, dan 8 jam pada fraksi volume 40%, 50%, 60%, 70% dengan variasi ketebalan ketebalan 5mm, 10mm, 15mm, 20mm pada pengujian bending paling optimal yaitu spesimen tebal 5mm pada Vf 50% sebesar 2,08 Mpa dan pada uji impak paling optimal komposit serat sekam padi acak yaitu spesimen dengan tebal 5mm Vf 50% yaitu sebesar 0,0906 J/mm2, selanjutnya engamatan struktur makro didapatkan jenis patahan broken fiber. Kata Kunci: sekam padi, urea formadehyde, bending, impak
PENGARUH PENAMBAHAN OKSIGENAT PADA SOLAR TERHADAP EMISI GAS BUANG MESIN DIESEL
Authors: Nofendri Yos 
Published: May 2021

ABSTRAK Penurunan kualitas udara pada bumi terus menurun. Ini disebabkan oleh polusi udara semakin lama semakin meningkat. Peningkatan jumlah kendaraan juga menjadi salah satu penyebab menurunnya kualitas udara. Penegakan aturan yang ketat dalam pengendalian pencemaran pada emisi gas buang semakin diperketat. Oleh itu diperlukan suatu bahan bakar kendaraan yang dapat mengurangkan emisi gas buang pada kendaraan. Pada saat sekarang ini pencarian bahan bakar ramah lingkungan difokuskan dengan menggunakan aditif berbahan dasar alami. Dengan demikian perlu diteliti penambahan aditif ditambahkan ke minyak solar, dengan tujuan untuk mengurangi emisi gas buang. Sebuah mesin diesel satu silinder telah digunakan yang digabungkan gas analyzer Bosc tipe BEA 150 / 250 / 350. Oksigenat berbahan dasar nabati digunakan sebagai aditif dalam bahan bakar diesel dengan campuran 1% - 5% volume. Tes emisi gas buang dilakukan pada kecepatan antara 900 - 1.700 rpm dan kondisi beban penuh. Percobaan dilakukan untuk mendapatkan parameter emisi gas buang. Hasil percobaan menunjukkan bahwa penambahan aditif oksigenat sebanyak 1 % bisa menurunkan jelaga 30%, meningkatkan CO2 sebanyak 5%, menurunkan CO 35% dan peningkatan NOx sebanyak 9% dibanding solar murni. Kata Kunci : Mesin diesel, Oksigenat, Emisi Gas Buang ABSTRACT Decline in air quality on earth continues to occur. One of its causes is air pollution which is the mistake of vehicle exhaust emissions. Strict enforcement of pollution control on exhaust emissions is one way to control exhaust emissions. It is therefore necessary to fuel a vehicle that can reduce exhaust emissions on vehicles. At the present time this environmentally friendly fuel search is focused using natural based additives. Thus it is necessary to examine the addition of additives added to the diesel oil, with the aim of reducing exhaust emissions. A single-cylinder diesel engine has been used which incorporates a BEA 150/250/350 Bosc gas analyzer. Vegetable oxygenates are used as additives in diesel fuel with a mixture of 1% - 5% by volume. The exhaust emission test is carried out at speeds between 900 - 1,700 rpm and full load conditions. The experiment was conducted to obtain the parameters of exhaust emissions. The experimental results show that the addition of 1% oxygenate additive can decrease carbon 30%, increase CO2 by 5%, decrease CO 35% and increase NOx by 9% compared to pure diesel. Keyword : Diesel Engine, Oxygenat, Emission Engine