bluuebunny/crossref_metadata_2025 huggingface dataset:
Enhancement of the North Atlantic CO2 sink by Arctic Waters
Authors: Olafsson Jon , Olafsdottir Solveig R. , Takahashi Taro , Danielsen Magnus , Arnarson Thorarinn S.
Published: March 2021

Abstract. The North Atlantic north of 50∘ N is one of the most intense ocean
sink areas for atmospheric CO2 considering the flux per unit area, 0.27 Pg-C yr−1, equivalent to −2.5 mol C m−2 yr−1. The northwest
Atlantic Ocean is a region with high anthropogenic carbon inventories. This
is on account of processes which sustain CO2 air–sea fluxes, in
particular strong seasonal winds, ocean heat loss, deep convective mixing,
and CO2 drawdown by primary production. The region is in the northern
limb of the global thermohaline circulation, a path for the long-term deep-sea sequestration of carbon dioxide. The surface water masses in the North
Atlantic are of contrasting origins and character, with the
northward-flowing North Atlantic Drift, a Gulf Stream offspring, on the one hand and on the
other hand the cold southward-moving low-salinity Polar and Arctic waters with
signatures from Arctic freshwater sources. We have studied by observation
the CO2 air–sea flux of the relevant water masses in the vicinity of
Iceland in all seasons and in different years. Here we show that the highest
ocean CO2 influx is to the Arctic and Polar waters, respectively,
-3.8±0.4 and -4.4±0.3 mol C m−2 yr−1. These waters are CO2 undersaturated in all seasons. The
Atlantic Water is a weak or neutral sink, near CO2 saturation, after
poleward drift from subtropical latitudes. These characteristics of the
three water masses are confirmed by data from observations covering 30 years. We relate the Polar Water and Arctic Water persistent undersaturation and
CO2 influx to the excess alkalinity derived from Arctic sources.
Carbonate chemistry equilibrium calculations clearly indicate that the
excess alkalinity may support at least 0.058 Pg-C yr−1, a significant
portion of the North Atlantic CO2 sink. The Arctic contribution to the
North Atlantic CO2 sink which we reveal was previously unrecognized.
However, we point out that there are gaps and conflicts in the knowledge
about the Arctic alkalinity and carbonate budgets and that future trends in
the North Atlantic CO2 sink are connected to developments in the
rapidly warming and changing Arctic. The results we present need to be taken
into consideration for the following question: will the North Atlantic continue to
absorb CO2 in the future as it has in the past?
Evaluating different machine learning methods to simulate runoff from extensive green roofs
Authors: Abdalla Elhadi Mohsen Hassan , Pons Vincent , Stovin Virginia , De-Ville Simon , Fassman-Beck Elizabeth , Alfredsen Knut , Muthanna Tone Merete
Published: March 2021

Abstract. Green roofs are increasingly popular measures to permanently reduce or delay stormwater runoff. Conceptual and physically-based hydrological models are powerful tools to estimate their performance. However, physically-based models are associated with a high level of complexity and computation costs while parameters of conceptual models are more difficult to obtain when measurements are not available for calibration. The main objective of the study was to examine the potential of using machine learning (ML) to simulate runoff from green roofs to estimate their hydrological performance. Four machine learning methods, Artificial Neural Network (ANN), M5 Model tree, Long Short-Term Memory (LSTM) and k-Nearest Neighbour (kNN) were applied to simulate stormwater runoff from sixteen extensive green roofs located in four Norwegian cities across different climatic zones. The potential of these ML methods for estimating green roof retention was assessed by comparing their simulations with a proven conceptual retention model. Furthermore, the transferability of ML models between the different green roofs in the study was tested to investigate the potential of using ML models as a tool for planning and design purposes. The ML models yielded low volumetric errors that were comparable with the conceptual retention models, which indicates good performance in estimating annual retention. The ML models yielded satisfactory modelling results (NSE > 0.5) in both training and validation data which indicates an ability to estimate green roof detention. The variations in ML models' performance between the cities was larger than between the different configurations, which was attributed to the different climatic characteristics between the four cities. Transferred ML models between cities with similar rainfall events characteristics (Bergen–Sandnes, Trondheim–Oslo) could yield satisfactory modelling performance (NSE > 0.5, |PBIAS|
Fragile protein folds: sequence and environmental factors affecting the equilibrium of two interconverting, stably folded protein conformations
Authors: Xu Xingjian , Dikiy Igor , Evans Matthew R. , Marcelino Leandro P. , Gardner Kevin H.
Published: March 2021

Abstract. Recent research on fold-switching metamorphic proteins has revealed some notable exceptions to Anfinsen's hypothesis of protein folding. We have previously described how a single point mutation can enable a well-folded protein domain, one of the two PAS (Per-ARNT-Sim) domains of the human ARNT (aryl hydrocarbon receptor nuclear translocator) protein, to interconvert between two conformers related by a slip of an internal β strand. Using this protein as a test case, we advance the concept of a “fragile fold”, a protein fold that can reversibly rearrange into another fold that differs by a substantial number of hydrogen bonds, entailing reorganization of single secondary structure elements to more drastic changes seen in metamorphic proteins. Here we use a battery of biophysical tests to examine several factors affecting the equilibrium between the two conformations of the switching ARNT PAS-B Y456T protein. Of note is that we find that factors which impact the HI loop preceding the shifted Iβ strand affect both the equilibrium levels of the two conformers and the denatured state which links them in the interconversion process. Finally, we describe small molecules that selectively bind to and stabilize the wild-type conformation of ARNT PAS-B. These studies form a toolkit for studying fragile protein folds and could enable ways to modulate the biological functions of such fragile folds, both in natural and engineered proteins.
Progressive advance and runout hazard assessment of a low-angle valley glacier in East Kunlun Mountains from multi-sensor satellite imagery analysis
Authors: Wang Xiaowen , Liu Lin , Hu Yan , Wu Tonghua , Zhao Lin , Liu Qiao , Zhang Rui , Zhang Bo , Liu Guoxiang
Published: March 2021

Abstract. Collapses of large parts of low-angle mountain glaciers in recent years have raised great attention due to their threats to lives and properties downstream. While current studies have mainly focused on post-event analysis, assessing the potential hazard of glaciers prone to collapse is rare. Here we presented a comprehensive analysis of the dynamics and runout hazard of a low-angle (~ 20°) valley glacier, close to the Qinghai–Tibet railway and highway, in the Kunlun Pass of East Kunlun Mountains on the Qinghai–Tibet Plateau. The changes in morphology, terminus position, and surface elevation of the glacier between 1975 and 2019 were characterized with multi-sensor remote sensing data including a stereo-image pair from the historical KH-9 spy satellite, six Digital Elevation Models (DEMs), and nine high-resolution images from Planet Labs. The surface flow velocities of the glacier tongue between 2009 and 2019 were also tracked based on cross-correlation of Planet images. Our observations show that the glacier snout has been progressively advancing in recent four decades, with a stepwise increase of advance velocity from 4.25 ± 0.28 m a−1 between 1975 and 2009 to 32.53 ± 4.45 m a−1 between 2015 and 2019. DEM differencing confirms the glacial advance, with surface thinning in the source region and thickening in the tongue region. The net volume loss over the glacier tongue was about 11.21 ± 2.66 × 105 m3 during 1975–2019. Image cross-correlation reveals that the surface flow velocity of the glacier tongue has been increasing in recent years, with the mean velocity below 4800 m almost trebled from 22 ± 4 cm a−1 during 2009–2012 to 61 ± 5 cm a−1 during 2016–2019. Piecing these observations together, we suggest that the flow of the glacier tongue is mainly controlled by the geometry of the glacier, while the presence of an ice-dammed lake and a supraglacial pond implies a hydrological influence as well. Taking the glacier tongue as an avalanche source, we quantitively simulated the potential runout distance using the Voellmy–Salm avalanche model. The simulations predict that the avalanche of the glacier tongue will result in a maximum runout distance of about 1.3 km with moderate friction parameters, unlikely to threaten the safety of the Qinghai–Tibet railway.
A statistical–parametric model of tropical cyclones for hazard assessment
Authors: Arthur William C.
Published: March 2021

Abstract. We present the formulation of an open-source, statistical–parametric model of tropical cyclones (TCs) for use in hazard and risk assessment applications. The model derives statistical relations for TC behaviour (genesis rate and location, intensity, speed and direction of translation) from best-track datasets, then uses these relations to create a synthetic catalogue based on stochastic sampling, representing many thousands of years of activity. A parametric wind field, based on radial profiles and boundary layer models, is applied to each event in the catalogue that is then used to fit extreme-value distributions for evaluation of return period wind speeds. We demonstrate the capability of the model to replicate observed behaviour of TCs, including coastal landfall rates which are of significant importance for risk assessments.
Hydrometeorological analysis and forecasting of a 3 d flash-flood-triggering desert rainstorm
Authors: Rinat Yair , Marra Francesco , Armon Moshe , Metzger Asher , Levi Yoav , Khain Pavel , Vadislavsky Elyakom , Rosensaft Marcelo , Morin Efrat
Published: March 2021

Abstract. Flash floods are among the most devastating and lethal natural hazards. In 2018, three flash-flood episodes resulted in 46 casualties in the deserts of Israel and Jordan alone. This paper presents the hydrometeorological analysis and forecasting of a substantial storm (25–27 April 2018) that hit an arid desert basin (Zin, ∼1400 km2, southern Israel) claiming 12 human lives. This paper aims to (a) spatially assess the severity of the storm, (b) quantify the timescale of the hydrological response, and (c) evaluate the available operational precipitation forecasting. Return periods of the storm's maximal rain intensities were derived locally at 1 km2 resolution using weather radar data and a novel statistical methodology. A high-resolution grid-based hydrological model was used to study the intra-basin flash-flood magnitudes which were consistent with direct information from witnesses. The model was further used to examine the hydrological response to different forecast scenarios. A small portion of the basin (1 %–20 %) experienced extreme precipitation intensities (75- to 100-year return period), resulting in a local hydrological response of a high magnitude (10- to 50-year return period). Hillslope runoff, initiated minutes after the intense rainfall occurred, reached the streams and resulted in peak discharge within tens of minutes. Available deterministic operational precipitation forecasts poorly predicted the hydrological response in the studied basins (tens to hundreds of square kilometers) mostly due to location inaccuracy. There was no gain from assimilating radar estimates in the numerical weather prediction model. Therefore, we suggest using deterministic forecasts with caution as it might lead to fatal decision making. To cope with such errors, a novel cost-effective methodology is applied by spatially shifting the forecasted precipitation fields. In this way, flash-flood occurrences were captured in most of the subbasins, resulting in few false alarms.
Geodetic point surface mass balances: a new approach to determine point surface mass balances on glaciers from remote sensing measurements
Authors: Vincent Christian , Cusicanqui Diego , Jourdain Bruno , Laarman Olivier , Six Delphine , Gilbert Adrien , Walpersdorf Andrea , Rabatel Antoine , Piard Luc , Gimbert Florent , Gagliardini Olivier , Peyaud Vincent , Arnaud Laurent , Thibert Emmanuel , Brun Fanny , Nanni Ugo
Published: March 2021

Abstract. Mass balance observations are very useful to assess climate change in
different regions of the world. As opposed to glacier-wide mass balances
which are influenced by the dynamic response of each glacier, point
mass balances provide a direct climatic signal that depends on surface
accumulation and ablation only. Unfortunately, major efforts are required to
conduct in situ measurements on glaciers. Here, we propose a new approach that
determines point surface mass balances from remote sensing observations. We
call this balance the geodetic point surface mass balance. From observations
and modelling performed on the Argentière and Mer de Glace glaciers over the
last decade, we show that the vertical ice flow velocity changes are small
in areas of low bedrock slope. Therefore, assuming constant vertical
velocities in time for such areas and provided that the vertical velocities
have been measured for at least 1 year in the past, our method can be used
to reconstruct annual point surface mass balances from surface elevations
and horizontal velocities alone. We demonstrate that the annual point
surface mass balances can be reconstructed with an accuracy of about
0.3 m of water equivalent per year (m w.e. a−1) using the vertical velocities observed over the previous years
and data from unmanned aerial vehicle images. Given the recent improvements
of satellite sensors, it should be possible to apply this method to high-spatial-resolution satellite images as well.
Strategi pengelolaan budidaya rumput laut Kappaphycus alvarezii di Kabupaten Pangkep, Sulawesi Selatan
Authors: Rusli Arham , Dahlia Dahlia , Ilijas Muhammad Ikbal , Alias Muh. , Budiman Budiman
Published: March 2021

Rumput laut merupakan salah satu komoditi budidaya laut yang menjadi unggulan Kab. Pangkep. Budidaya rumput laut K. alvarezii telah lama diusahakan oleh masyarakat di Kab. Pangkep, namun masih ditemui beberapa kendala dan permasalahan sehingga hasil yang diperoleh oleh petani dari usaha rumput laut belum maksimal. Penelitian ini bertujuan mengkaji strategi pengelolaan budidaya rumput laut di Kab. Pangkep. Penelitian dilaksanakan pada empat wilayah budidaya rumput laut di Kab. Pangkep yaitu Kec. Ma’rang, Kec. Mandalle, Kec. Segeri dan Kec. Labakkang. Data penelitian dikumpulkan menggunakan beberapa metode yaitu: Focus Group Discussion (FGD), observasi, wawancara terstruktur, dan studi literatur. Data hasil penelitian dianalisis menggunakan analisis SWOT untuk menentukan strategi pengelolaan budidaya rumput laut. Berdasarkan hasil analisis SWOT terhadap kondisi lingkungan internal dan eksternal yang berpengaruh pada kegiatan budidaya rumput laut di Kab. Pangkep, maka strategi yang terpilih adalah strategi yang memanfaatkan faktor peluang untuk mengatasi faktor kelemahan (strategi WO). Rumusan strategi WO yang diusulkan untuk perbaikan dan pengembangan budidaya rumput laut di Kab. Pangkep antara lain; peningkatkan bimbingan teknis dan pendampingan oleh penyuluh pada kegiatan usaha budidaya rumput laut; pembentukan usaha produksi “bibit sebar” hasil kaidah seleksi secara konsisten dan berkesinambungan di setiap kawasan/zona budidaya; kajian dan penetapan musim tanam sepanjang tahun sesuai karakter perairan dan musim di setiap zona budidaya.
REVISTA GEN
Authors: UNIMETA Corporacion  Universitaria del Meta
Published: March 2021

Encarando los retos actuales de la región, la Revista GEN busca convertirse en un lugar de confrontación intelectual, que permita a una nueva generación la interacción entre investigadores de y en formación desde diferentes ámbitos profesionales: Adminis - tradores, contadores, mercadólogos, publicistas, di - señadores, artistas, quienes mantendrán la reflexión dentro de los espacios académicos, emprendiendo vuelos y rompiendo los límites que nos impone la misma sociedad.
Analisis Penggunaan Enkripsi End To End Pada Aplikasi Whatsapp Messengger
Authors: Urva Gellysa
Published: March 2021

Perkembangan teknologi dan komunikasi yang begitu pesat pada era duniasaat ini tidak dapat dipungkiri. Teknologi merupakan alat bantu yang saat inimenjadi salah satu kebutuhan yang harus dipenuhi sebagai pelengkap di kehidupanmanusia. Perkembangan smartphone berbasis android telah mewarnai dunia denganpesatnya. Mulai kalangan anak-anak hingga dewasa menuntut kegunaansmartphone sebagai teknologi tepat guna untuk digunakan sebagai komunikasimaupun kegunaan-kegunaan lainnya. Salah satu aplikasi android yang palingbanyak digunakan adalah WhatsApp Messenger yang masih menjadi primadonasebagai aplikasi pesan instan yang digemari oleh banyak orang di dunia. Adabeberapa alasan pemilihan WhatsApp Messenger sebagai aplikasi pesan yangdigemari yaitu seperti aplikasi yang ringkas, mudah terhubung dalam jaringan, dantidak perlu memiliki ID pengguna menjadi salah satu keunggulan tersendiri bagiWhatsApp Messenger. WhatsApp Messenger sebagai aplikasi pesan yang banyak digemari olehbanyak orang juga membutuhkan peningkatan keamanan guna menghindarikejahatan-kejahatan dunia cyber yang tidak dikehendaki. Mengingat penggunaanaplikasi tersebut berbanding lurus dengan peningkatan tingkat kejahatan yangmenggunakan aplikasi pengolah pesan itu. Tidak jarang, aplikasi pengolah pesandigunakan untuk bertukar informasi yang ilegal ataupun tindakan pemerasan. Halini membutuhkan penanganan khusus. Dengan penerapan teknik enkripsi end-toendpada WhatsApp Messenger maka hanya pengirim dan penerima sajalah yanghanya dapat membuka dan membaca pesan asli yang dikirimkan walaupun pesanterlebih dahulu singgah pada server penyedia layanan. Menariknya, WhatsAppMessenger memilih tipe enkripsi ‘end-to-end’. Enkripsi end to end ini akanmelindungi setiap pesan yang dikirim maupun yang diterima.
Sistem Pengajuan Judul Tugas Akhir Dengan Menggunakan Metode Term Weighting
Authors: Yuliati Tri , Alimudin Erna , Fitra Fitra
Published: March 2021

Pengajuan judul tugas akhir merupakan hal yang pertama dilakukan mahassiswa untuk melakukan penelitian dan menyelesaikan kuliah di Sekolah Tinggi Teknologi (STT) Dumai, maka dari itu proses pengajuan tugas akhir harus benar-benar dipilih judul yang sesuai untuk pengajuan penelitian dikarenakan menghindari terjadinya kesamaan judul yang sering terjadi., sehingga bisa meminimalisir terjadinya plagiarisme. Selama ini proses yang berjalan cukup lambat untuk penerimaan judul tugas akhir yang masuk dikarenakan proses pengajuan masih manual yaitu dengan menggunakan kertas proposal dari mahasiswa yang diajukan ke prodi, kendala lainnya yaitu dengan minimnya informasi yang didapatkan mengenai judul tugas akhir yang sudah pernah ada. maka dari itu penulis membuat penelitian mengenai pengajuan judul tugas akhir dengan metode term weighting pada sistem informasi pengajuan judul tugas akhir dengan menggunakan bahasa pemrograman PHP dimana metode term weighting ini menghitung judul yang diinput kedalam sistem dengan perhitungan jika judul yang dimasukkan melebihi 50% dari judul yang sudah ada maka judul yang diajukan tidak layak dengan nilai persentasi kelayakan kecil dan mahasiswa tidak bisa mengajukan judul yang sama, sistem ini juga menambahkan kata pengecualian yaitu kata yang sering diajukan mahasiswa menjadi kata yang tidak ada nilai persentasi kelayakan.
Potensi Sampah Organik Sebagai Bahan Baku Pembuatan Briket Bio Arang
Authors: Febrina Wetri
Published: March 2021

Krisis energi memicu eksplorasi besar-besaran terhadap berbagai sumber energi alternatif jika bahan bakunya berasal dari limbah dan sampah. Upaya peningkatan nilai jual dan kemanfaatan dari sampah dapat dilakukan melalui program pengolahan sampah organik menjadi briket bioarang. Briket bioarang berasal dari bahan baku tempurung kelapa dan kulit jengkol sebagai. Kadar air briket arang yang dihasilkan berkisar antara 5,781%-6,1%. Hasil ini telah memenuhi persyaratan kualitas briket arang SNI 8%. Jika dilihat dari variasi perbandingan briket Tempurung Kelapa 60% dan Serbuk kulit jengkol 30% dan Tempurung Kelapa 30% dan Serbuk Kulit jengkol 60%, briket yang dibuat dari bahan baku dengan campuran kulit jengkol yang banyak akan menyebabkan kandungan air yang tinggi. Sedangkan briket yang bahan bakunya tempurung kelapa yang lebih banyak menyebabkan rendahnya kadar air yang dihasilkan. Nilai rata-rata kadar abu yang dihasilkan berkisar antara 2,55%-7,51%. Nilai kadar abu dari briket yang dihasilkan ini telah memenuhi kualitas standar SNI 8%. Nilai kadar abu terendah sebesar 2,55% terdapat pada 90% arang kulit jengkol sedangkan nilai tertinggi yaitu 7,51% terdapat pada 90% arang Tempurung Kelapa. Hasil penelitian disimpulkan bahwa briket bioarang dari campuran kulit jengkol dan tempurung kelapa layak dikembangkan untuk industri rumah tangga karena kualitas arang yang dihasilkan sudah memenuhi standar SNI.
Sistem Informasi Penjadwalan Bel Sekolah Otomatis Berbasis Microcontroller
Authors: Linarta Arie , Nurhadi Nurhadi
Published: March 2021

Bel sekolah merupakan sebuah perangkat yang dibutuhkan disekolah sebagai media pendukung untuk menyampaikan informasi atau sebagai pemberitahuan pergantian jam kepada siswa dan guru. Namun masalah yang sering muncul adalah suara bel yang dihasilkan pada umumnya hanya sebatas bunyi buzzer yang tidak memiliki informasi tertentu dan sulit untuk dipahami, selain itu bel diaktifkan secara manual melalui tenaga piket yang bertugas untuk menyampaikan informasi dan membunyikan bel sekolah pada jam atau waktu tertentu. Sistem informasi penjadwalan bel sekolah otomatis menggunakan Microcontroller dan Visual Basic .Net ini dirancang untuk menangani masalah dalam penjadwalan bel sekolah di SDS Santo Tarcisius Dumai. Sistem ini berupa sebuah perangkat elektronik berbasis microcontroller yang mampu menyampaikan informasi dalam format suara .MP3 atau .WAV sehingga informasi yang disampaikan dari sistem bel otomatis ini dapat dengan mudah dipahami oleh guru ataupun siswa, selain itu proses pengaturan jadwal sekolah dapat dilakukan dengan cepat dan mudah menggunakan PC atau Laptop melalui aplikasi khusus dari sistem bel sekolah otomatis ini, dengan demikian proses pengaturan jadwal dapat dilakukan dengan cepat, mudah dan efektif. Selain itu kemampuan penyimpanan data yang besar dari board microcontroller arduino yang digunakan memungkinkan perangkat bel sekolah mampu menampung jadwal hingga lebih dari 300 jadwal bel dalam 1 minggu.
Rancang Bangun Alat Pengupas Kulit Singkong Dengan Prinsip Mesin Bubut
Authors: Fanila Hesty , Sastra Marhadi
Published: March 2021

Singkong merupakan salah satu potensi lokal Indonesia melimpah dan belum termanfaatkan secara optimal. Singkong dapat diolah menjadi berbagai bahan pangan, salah satu panganan yang praktis dari hasil olahan singkong adalah keripik. Kendala yang sering dirasakan produsen keripik adalah proses pengupasan yang biasanya dilakukan secara manual yang membutuhkan waktu yang lama. Untuk mendukung proses produksi keripik, dibutuhkan tenaga kerja yang banyak. Metode pengupasan manual dilakukan dengan cara menyayat kulit singkong secara memanjang kemudian mencongkel kulit secara memutar. Pada kondisi ini, pekerja pada kondisi yang tidak aman karena memungkinkan tersayatnya tangan pekerja oleh pisau. Berdasarkan kondisi dan situasi tersebut mendorong penciptaan teknologi pengupasan singkong yang efisien dan aman berupa alat pengupas singkong berpenggerak motor listrik dengan menggunakan prinsip dasar mesin bubut.
Los derechos económicos, sociales y culturales de los artistas en contextos de violencia y pobreza. El caso de Acapulco, México
Authors: Reyes-Martínez Javier , Andrade-Guzmán Carlos
Published: March 2021

La pobreza y la victimización ocasionadas por el crimen y la violencia son consideradas violaciones a los derechos económicos, sociales y culturales, y a la dignidad humana. Las poblaciones más excluidas suelen ser víctimas recurrentes de estas violaciones de derechos. Los artistas son una de estas poblaciones, pues usualmente se encuentran en situación de vulnerabilidad socio-económica estructural.
Tomando como caso de estudio a la ciudad de Acapulco, México, una de las localidades más violentas y empobrecidas del país, intentamos responder, ¿cómo es ejercido el arte en Acapulco, una ciudad con un alto índice de población en situación de pobreza y con un alto nivel de violencia? ¿Qué implicaciones tiene esto en la práctica artística? A su vez, ¿cómo ejercen sus derechos quienes se dedican al arte en Acapulco? Para ello, se diseñó un estudio de caso cualitativo instrumental centrado en las experiencias de los artistas. Mediante un análisis temático identificamos que en Acapulco los artistas ejercen sus derechos económicos, sociales y culturales principalmente a través del mercado, y en los casos de un ejercicio más constante, éste se encuentra asociado con un contrato laboral formal, más que desde la oferta pública garantizada por el Estado.
Addressing SITU_ACCÃO: Case Study of an Artistic Intervention and Research into Public Spaces
Authors: Pratas-Cruzeiro Cristina , Elias Helena , Valente Catarina , Cortez Tânia
Published: March 2021

This article explores the embodiment of the art historical avant-garde legacy through some of the artistic manifestations across the 20th century, in public spaces. At the same time, it discusses the incorporation of such historical background in contemporary collaborative research practices. It does so by addressing the case study of the collective Situ_Acção, a group of artists and researchers from different fields of arts and communication, whose activity is focused on intervention in the city, based on action and collaborative research and shared reflection on urban phenomena, associated with public arts.
First, it will be described how Situ_Acção started a common ground for the inquiry: the legacy of urban murals in Lisbon. By investigating the Portuguese digital archives of urban murals of the 1970s and 1980s, Situ_Acção applied spatial artistic techniques to overcome the missing information regarding the places of intervention. In addition, the use of performance and on-site installation implements alternative approaches to communicate research to a wider audience. This exercise will allow different degrees of participation within the work of art in progress. The project Memory in the Walls (MOWS) will be described in the concluding chapter, in order to explore such degrees of interaction.
El 'hoy' confinado en una galería de arte. Entrevista a José Ruiz
Authors: González-Martín César
Published: March 2021

José Ruiz es un artista que ha decido confinarse durante la cuarentena provocada por el COVID-19 en la galería de arte Espacio El Dorado (Bogotá, Colombia). Como parte del proyecto “Impresiones sobre actualidad” lleva 109 días encerrado realizando una cuarentena de impresión que reflexiona sobre el concepto de actualidad mediante el uso de la palabra “Hoy”. Previo al confinamiento, los visitantes al espacio facilitaban un enunciado que contuviera dicha palabra seguida de una inquietud personal, grupal, nacional, global o universal, que era impresa para formar parte de la instalación artística realizada en la galería. Durante el confinamiento, la recepción de enunciados se ha realizado a través de internet. Una experiencia que además es emitida en vivo las 24 h. del día. Un proyecto con unos antecedentes que parten de su interés por los archivos y las publicaciones que viene desarrollando desde hace años. Mediante esta entrevista conoceremos su trayectoria, los antecedentes del proyecto y su experiencia durante el confinamiento en la galería de arte.
Euzinho: o olhar das crianças e o registro de experiência acerca da selfie e do autorretrato
Authors: Pacífico Marsiel , Da Silva Marcia Barbosa , Heitokoeter de Melo Junior Valdir
Published: March 2021

Este artigo tem por objetivo apresentar os resultados alcançados no decorrer do desenvolvimento da oficina Euzinho, aplicada na Escola Municipal Professora Juventina Betim da Silva, em Telêmaco Borba/PR. As atividades realizadas são parte do cronograma estipulado pelo Projeto de Extensão LUME (Laboratório e Núcleo de Estudos de Mídia e Educação), inerente ao programa Universidade Sem Fronteiras. O tema da oficina foi alicerçado em dois motes: selfie e autorretrato. A partir de uma pesquisa exploratória de abordagem qualitativa, foram realizadas discussões temáticas oriundas de revisão bibliográfica, exposição de obras artísticas, desenvolvimento e aplicação de técnicas de retrato em pintura e, em registro fotográfico, buscou-se problematizar a utilização contemporânea midiática e reificada das selfies, oferecendo como contraponto a possibilidade de autorretratos potencializados de autonomia e expressividade artística, no intento de um processo emancipatório e de questionamento crítico do uso das mídias na atualidade, sobretudo para o público considerado jovem ou infantil.
ANALISIS PERSEPSI KUALITAS DAN NILAI DI BANK SYARIâ€™AH DAN PENGARUHNYA TERHADAP KEPUTUSAN MENABUNG (Studi Kasus di Jawa Barat)
Authors: Zahra Ghina Atikah
Published: March 2021

Industri perbankan merupakan salah satu industri pokok yang harus ada dan dibutuhkan oleh banyak lapisan masyarakat. Penelitian ini mengenai pengaruh persepsi masyarakat terhadap keputusan menabung pada perbankan syariah di Jawa Barat. Objek penelitian adalah masyarakat yang menabung pada Bank Syariah di Jawa Barat dan yang menjadi sampel adalah sebanyak 385 responden. Penelitian ini menggunakan model analisis SEM LISREL. Saat dilakukan pengujian hipotesis penelitian melalui model struktural, menghasilkan Persepsi Kualitas (X1) dan Persepsi Nilai (X2) memberi pengaruh sebesar 62,3% terhadap Keputusan menabung (Y). Berdasarkan koefisien jalur, variabel yang berpengaruh dominan dalam menjelaskan Keputusan Menabung (Y) secara berurutan adalah Persepsi nilai (X2) sebesar 0,515 (39,7%), kemudian  Persepsi Kualitas (X1) sebesar 0,305 (22,5%). Maka hal ini menunjukkan bahwa persepsi kualitas berpengaruh signifikan terhadap keputusan menabung di Bank Syariah, dan persepsi nilai pun berpengaruh signifikan terhadap keputusan menabung di Bank Syariah.
ANALISIS JANUARY EFFECT TERHADAP INDEKS HARGA SAHAM GABUNGAN DI BURSA EFEK INDONESIA PERIODE 2015-2019
Authors: Munica Firrisa Tsamara , Yunita Irni
Published: March 2021

January effect adalah kondisi dimana return saham bulan Januari lebih tinggi dari rata-rata return bulan selain Januari. Tujuan dari penelitian ini adalah untuk mengetahui apakah terjadi January effect di Bursa Efek Indonesia atau tidak terjadi. Jika ada perbedaan return saham bulan Januari dengan rata-rata return bulan selain januari maka terjadi January effect, begitu pula sebaliknya. Data yang digunakan dalam penelitian ini adalah data sekunder. Penelitian ini menggunakan sampel seluruh perusahaan yang terdaftar di Bursa Efek Indonesia periode 2015-2019 dengan menggunakan data Indeks Harga Saham Gabungan (IHSG). Analisis data yang digunakan dalam penelitian ini adalah Uji One way ANOVA. Hasil dari analisis data yang telah dilakukan menunjukkan bahwa tidak terdapat perbedaan return saham pada bulan Januari dengan rata-rata return saham selain bulan Januari di Bursa Efek Indonesia periode 2015-2019, sehingga dapat disimpulkan bahwa di Bursa Efek Indonesia Periode 2015-2019 tidak terjadi January effect.
Risk factors for non-reaching of ileal pouch to the anus in laparoscopic restorative proctocolectomy with handsewn anastomosis for ulcerative colitis
Authors: Emoto Shigenobu , Hata Keisuke , Nozawa Hiroaki , Kawai Kazushige , Tanaka Toshiaki , Nishikawa Takeshi , Shuno Yasutaka , Sasaki Kazuhito , Kaneko Manabu , Murono Koji , Iida Yuuki , Ishii Hiroaki , Yokoyama Yuichiro , Anzai Hiroyuki , Sonoda Hirofumi , Ishihara Soichiro
Published: March 2021

Background/Aims: Restorative proctocolectomy (RPC) with ileal pouch-anal anastomosis and handsewn anastomosis for ulcerative colitis requires pulling down of the ileal pouch into the pelvis, which can be technically challenging. We examined risk factors for the pouch not reaching the anus.Methods: Clinical records of 62 consecutive patients who were scheduled to undergo RPC with handsewn anastomosis at the University of Tokyo Hospital during 1989–2019 were reviewed. Risk factors for non-reaching were analyzed in patients in whom hand sewing was abandoned for stapled anastomosis because of nonreaching. Risk factors for non-reaching in laparoscopic RPC were separately analyzed. Anatomical indicators obtained from presurgical computed tomography (CT) were also evaluated.Results: Thirty-seven of 62 cases underwent laparoscopic procedures. In 6 cases (9.7%), handsewn anastomosis was changed to stapled anastomosis because of non-reaching. Male sex and a laparoscopic approach were independent risk factors of non-reaching. Distance between the terminal of the superior mesenteric artery (SMA) ileal branch and the anus > 11 cm was a risk factor for non-reaching.Conclusions: Laparoscopic RPC with handsewn anastomosis may limit extension and induction of the ileal pouch into the anus. Preoperative CT measurement from the terminal SMA to the anus may be useful for predicting non-reaching.
En torno a la “audiovisualización” de la comunicación publicitaria
Authors: Muñiz Velázquez José Antonio
Published: March 2021

Parece que el futuro de la publicidad pasa irremediablemente por un proceso continuo de “audiovisualización”, esto es, de la transformación de todo tipo de formatos, canales y soportes en una modalidad audiovisual de comunicación publicitaria. Así está siendo en ámbitos tan a priori distintos como Internet, la publicidad exterior, la publicidad en el móvil y otros dispositivos, etc. Al mismo tiempo, y paralelamente a ello, también parece predominante el fenómeno de la hibridación entre distintos canales y modalidades, la interactividad creciente, lo que dará pie a la “gamificación”, por un lado, la transmedialidad, por otro, y la generación de contenidos publicitarios y de marca también por parte de los receptores, consumidors y/o usuarios, todo lo cual da pie a pensar que estamos ante un cambio de paradigma de la comunicación publicitaria en muchos de sus aspectos, donde el poder de la comunicación se reparte de manera mucho más equilibrada entre emisor y receptor, marca y consumidores, donde la frontera entre unos y otros queda diluida y que condicionará sobremanera la construcción de los mensajes publicitarios.
Inskrypcje łacińskie i herby możnowładców w kościele św. Wita w Tuliszkowie
Authors: Cichy Bogdan
Published: March 2021

W Tuliszkowie – w kościele pw. św. Wita męczennika – znajdują się inskrypcje w języku łacińskim, a także herby możnowładców związanych z Tuliszkowem. Do tej pory nie dokonano analizy treści tych inskrypcji. Nie poświęcono też należytej uwagi zachowanym herbom. Celem artykułu jest opisanie istniejących obiektów, analiza treści inskrypcji i krytyczna w ich świetle ocena dotychczasowych publikacji związanych z kościołem w Tuliszkowie. Za metodę badawcza obrano wizję lokalną, kwerendę w archiwach państwowych i kościelnych oraz przegląd literatury przedmiotu. Analiza pokazała, że Mikołaj z Kalinowej Zaremba, syn kasztelana kaliskiego,był mężem Anny z Sieprskich. Ich córka – Katarzyna – wyszła za mąż za Jana Krotoskiego – dyplomatę Stefana Batorego. Po śmierci mężów Anna i Katarzyna w 1597 roku ufundowały zmarłym epitafium znajdujące się w kościele w Tuliszkowie. W kościele tym znajduje się też chrzcielnica z 1890 r. fundacji Zofii – Jadwigi z Zamoyskich, żony Ludwika Wodzickiego. Chrzcielnicę i wieżę kościoła zdobią herby Zamoyskich i Wodzickich. W niniejszym tekście po raz pierwszy wykazano również, że Jan Krotoski był żonaty z Katarzyną Zarembianką.
PERKEMBANGAN PRAGMATIK DALAM PEMEROLEHAN BAHASA ANAK
Authors: Akhyar Fitria
Published: March 2021

This study aims to describe theoritically related to the development of pragmatic category languages in children. The subjects studied were dominated by pre-school children (under 7 years). The method used in writing this paper is a literature study. Based on the literature that has been studied, it is found that: (1) in each context of dialogue there is a violation of the maxims with a certain frequency. Some responses from resource persons are straightforward and very informative or have adhered to the maxim of quantity, quality, relevance, and method; (2) the number of violations of maxims carried out by respondents can be seen as something natural and a natural process. (3) children preschool age still use positive politeness strategy to express their wishes.
UPAYA MENINGKATKAN KETERAMPILAN MENULIS PANTUN MELALUI METODE PEMBERIAN TUGAS PADA SISWA SD
Authors: Kismono Joko
Published: March 2021

Lately research on improving skills has become the focus of experts, one of the skills that must be supported by the ability to write poetry. This research supports to see the improvement of poetry writing skills through the method of giving assignments to elementary students. This type of research is classroom action research. The sample of this research is 6th grade students. The technique of collecting data uses observation sheets, interviews, tests and non-tests. Data analysis uses data reduction, data presentation and conclusions, then quantitative Likert scale analysis. The results obtained from this study about increasing students in poetry writing skills using the help method in accordance with the cycle that is applied then students increase a significant increase
PENGARUH PENGGUNAAN MEDIA CERITA BERGAMBAR DAN AKTIVITAS BELAJAR TERHADAP KEMAMPUAN MENULIS PARAGRAF PADA SISWA KELAS V SDN TANJUNG SETIA PESISIR BARAT
Authors: Nurani Nurani
Published: March 2021

learning activities to the ability of writing paragraph. This research was motivated by the fact in field that the ability of writing paragraph and learning activities and influence of using picture media and learning activities to the ability of writing paragraph at five grade students of SDN Tanjung Setia Pesisir Barat. To reach the purpose of the research above, the researcher use correlational methos, it means that the data collected after all the even happen. The techniques to collect the data are analitycal conditional test, statistical analyze, and research hypothesis test. The result of the research showed that (1) there is a positive and significant of using picture media and students’ to ability of writing paragraph with correlation coeffesient is 15,88, (2) there is positive and significant correlation coefficient is 13,70, (3) there is a positive and significant  influence of using picture media and learning activities to the ability of writing paragraph is 16,74.
MITOLOGI JAWA DALAM CERITA CALON ARANG KARYA PRAMOEDYA ANANTA TOER
Authors: Hastuti Hastuti
Published: March 2021

This study aims to describe Javanese mythology in Pramoedya Ananta Toer's story of Calon Arang. The method that will be used by researchers in this research is descriptive method. From the research results in the novel Cerita Calon Arang by Pramoedya Ananta Toer, there are three mythologies. First, belief in mantras, the second is offering rituals, and the third is ritual worship.
KALIMAT EFEKTIF RAGAM LISAN KHUTBAH JUMAT DI MASJID JABAL RAHMAH KECAMATAN LANGKAPURA
Authors: Anggraini Nani
Published: March 2021

Abstract: This study aims to identify and describe the use of effective sentences in Indonesian in the Friday sermon at the Jabal Rahma Mosque, Langkapura Sub-district. The method used in this research is descriptive method. Data collection using recording techniques and interviews, the data collected is then analyzed. The content of the sermon is analyzed based on parallels, firmness, frugality, accuracy, cohesiveness, and logic of the sentences in the Friday sermon. The steps taken in analyzing Friday sermons are by transcribing the content of the sermon into written language and identifying sentences in Friday sermons. The results showed that it was less effective than usage
From Teaching as Transmission to Constructive Alignment
Authors: Gynnild Vidar , Leira Bernt Johan , Holmedal Lars Erik , Mossige Jon Coll , Myrhaug Dag
Published: March 2021

This paper reports on an action research study on curriculum design in an optional module at the Norwegian University of Science and Technology. There were two professors teaching their respective parts, henceforth termed “Part 1” and “Part 2”. Oral evaluations confirmed students’ satisfaction with teaching; however, failure rates had been an issue for years and was a concern to the professors who were wondering why. This study sets out to explore causes of poor academic achievement in order to launch targeted interventions. A major issue was students’ limited capabilities in dealing with conceptual and theoretical problems. This was partially explained by a mismatch between types of problems in the exercises compared with those at the final exam. The ensuing intervention included the redesign of tasks to improve alignment of course components as well as introducing a mid-term exam specifically addressing conceptual and theoretical themes. Failure rates dropped markedly in subsequent years due to students’ enhanced ability to cope with the broader spectrum of course requirements.
Influence of Induced Soil Compaction on the Growth, the Yield and the Soil Loss Resulting from the Groundnut Harvesting
Authors: Ewetola Esther Abosede
Published: March 2021

The research was conducted to study  the growth and the yield of the groundnut plant and to  quantify the soil loss after groundnut harvesting as influenced by induced soil compaction. A ten kilogram of soil was packed in the pots with an initial bulk density of 1.05 Mg m-3, then it were compressed to1.57, 1.72, 1.88, 2.04, and 2.42 Mg m-3. The research was conducted in a completely randomized design with three replications. Groundnut seeds were sown in pots and the plant growth data were collected in a 2-week interval while force and energy of harvesting and soil loss due to groundnut harvesting were determined at 12 weeks after sowing. Data were analyzed using ANOVA and Fishers LSD at P= 0.05. Soil compacted to1.88 Mgm-3 produced more taller plant, more higher number of leaves and branches than control. Soil compaction significantly reduced the number of pods, roots, and fresh root weight compared to control. Bulk density (2.04 Mgm-3) required a significantly higher force (42.47 N) and energy (45.73 J) in harvesting than control and other compaction levels. Soil loss due to the  groundnut harvesting increased (13- 42%) in all compaction levels although statistically not different. Soil compaction beyond 1.88 Mg m-3 could affect the growth and the yield of groundnut and could increase the soil loss at harvesting.
Estimate of body growth curve and feed intake of free-range chickens receiving different levels of digestible lysine
Authors: Brito Claudson O. , Cunha-Filho Octavio G. , Silva Camilla M. , Vieira Jodnes S. , Del-Vesco Ana P. , Feitosa Victor E. M. , Barbosa Leandro T. , Ribeiro-Júnior Valdir , Tavernari Fernando C.
Published: March 2021

Aim of the study: To adjust nonlinear Gompertz model to describe the body growth and feed intake (FI) of free-range chickens of the CPK (Color Plumé) strain, receiving different levels of digestible lysine (dig-Lys), from 21 to 77 days of age.Area of study: São Cristovão, Sergipe, Brazil.Material and methods: A total of 432 one-day-old unsexed chickens were used in the study. At 21 days of age, the birds were assigned to four treatments (0.85%; 0.97%; 1.09%; 1.21%) of dig-Lys, in a completely randomized design with four replicates, with 27 birds per experimental unit. The Gompertz model was used to estimate bird growth curves related to body weight (BW) and FI at each Lys level.Main results: The tests of comparison between the parameters of the Gompertz model for each Lys level showed that parameter A varied, while parameters B (0.0329) and C (45.819) did not differ significantly. In parameter A, the dig-Lys level of 0.97% provided the highest BW estimate at maturity and maximum BW at the inflection point.Research highlights: Use of non-linear models to predict nutritional requirements, helps farmers to optimize management decisions and, thus, maximize their profit. According to Gompertz model, it was possible to infer that the inclusion of 0.97% dig-Lys in the diet of mixed batches of free-range chickens of the CPK strain meets their nutritional requirements.
A Healthier Beverage Choice is Based on a Subjective Assessment of Sweet Taste
Authors: Reijnen Ester , Kühne Swen J. , Ritter Reto
Published: March 2021

Despite promising interventions to lower people’s daily sugar consumption, such as health- or taste-focused labels, the consumption of sugar-sweetened beverages (SSBs) continues to rise. To improve the effectiveness of existing labels, the way people process sugar amounts in grams (g) as displayed on beverages seems to merit elucidation. For example, do people perceive the difference in the amount of sugar, and thus in the subjective sweet taste, between two beverages according to Weber’s law? Additionally, is that perceived difference the cause of their beverage choice? In order to investigate these questions, participants in this online experiment first had to estimate the sugar difference between two beverages based on grams and then decide whether they would switch to a lower-sugar beverage. We found that participants’ different estimates followed Weber’s law. The choice of the lower-sugar beverage, however, depended on how large they personally perceived that difference. In other words, the choice was independent of the ratio. These results show that future labels, rather than indicating the total amount of sugar, should indicate whether the reduction, for example in the amount of sugar compared to another beverage, was perceived as significant by others.
Multi-physics evaluation of the steady-state operation of an Aqueous Homogeneous Reactor for producing Mo-99 for the Brazilian demand
Authors: MİLİAN PÉREZ Daniel , MİLİAN PÉREZ Daylen , HERNÁNDEZ PARDO Liván , MİLİAN LORENZO Daniel , BRAYNER DE OLİVEİRA LİRA Carlos
Published: March 2021

The studies summarized in this paper aims to predict the steady state operation of a low-enriched uranium fuel ARGUS type aqueous homogeneous reactor for producing 99Mo to meet the domestic demand of Brazil through a coupled multi-physics (Neutronics + Thermal-hydraulics) evaluation. The coupled multi-physics evaluation included aspects related to the neutronic behavior such as fission induced energy deposition profile, medical isotopes production; and the thermal-hydraulic behavior such as temperature, velocities and gas volume fraction profiles. The methodology followed for the multi-physics and multi-scale coupling of the neutronic and thermal-hydraulic codes (MCNP + ANSYS-CFX), discussed in detail in this paper, represent one of the main outcomes of the current study. The methodology was tested for two different operating configurations of the ARGUS reactor, the original high-enriched uranium configuration used since 1981, and the new low-enriched uranium configuration after the conversion process during 2012-2014. The calculations carried out showed that the reactor, in the studied configuration, is able to produce 246.5 six days Curie of 99Mo in operation cycles of five days. Which is equivalent to more than a third of the estimated Brazilian demand for 2025.