bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect Of Consuming Omega 6 On Learning Achievement Of Grade 1 Elementary School Students In Coastal And Urban Areas
Authors: Nurasmi Nurasmi , Gusriani Gusriani , Rahimah Rahimah
Published: January 2022

Omega 6 is  a group of plural unsaturated  fatty acids and includes esential  fatty acids because is  cannot be  producet by the  body. The  unsaturated chain (doubel  bond) in the first omega 6 is found in the 6th carbon  chain, and therefore it is called  omega 6. Student learning achievements both in coastal  and urban areas must be the same. The purpose  of this  study  was to  determine  the  effect of  consumption  of  omega 6  on learning  achievements of  grade  1  elementary  school  student in  coastal  and  urban areas. This research used analytical research methods with cross sectional design. The population in this study  was all grade 1 elementary school  student in SDN 032 Amal Lama with 27 students  and all grade 1 students in  SDN 015 Kampung Enam with 27 students. Samples  were taken  using the totality  population technique  with a total  of 54 people. The  Chi-Square test obtained  the value of P  in the coastal  area was 0.48, which was < 0.05, and in  the urban area was 0.24 which was <  0.05, H0 was rejected and  H1   was   accepted  which   mean   that  there   was  an   influence  of   omega   6 consumption of omega  6 unsaturated fatty acids  was not the only major  factor in the effect of  learning achievement of  grade 1  elementary school children  in coastal  and urban  areas. Other  factors  such  as the  environment  and  education  of parents  also supported  in   increasing  student   achievement  and  in   providing  information   and knowledge to students.
The "Acheret" Center and "Archimedes Fulcrum" Academy: an innovative model for project-based learning of physics
Authors: Cohn Amos , Trumper Ricardo
Published: January 2022

This paper presents a unique and innovative model for project-based learning in physics in which students are engaged in long-term open-ended research projects in physics that are done at the laboratory in school, and in which the project advisor is a physics teacher supported by a community of teacher-researchers.
Internet Forums in Class: Innovation for Science Education by Focusing on Social Media
Authors: Dittmar Johanna , Eilks Ingo
Published: January 2022

Internet forums are a part of the World Wide Web and are frequently used to ask questions and receive answers. They are popular platforms for exchanging information and comparing opinions. Many people query and retrieve information from Internet forums on various topics, many of which are related to science and technology. These include health, cosmetics, technical devices, and environmental issues. The reliability of the corresponding entries in Internet forums, however, should be approached with great caution. Answers found in general Internet forums are often provided by laypeople. Forum posts may contain information without scientific proofand are influenced by personal beliefs and opinions. This paper sums up the action research journey of a science teacher who looked into how secondary school students view and use Internet forums and how such Internet forums may be potentially useful for innovation in science teaching. The project encompassed different action research measures. It suggests that it is potentially beneficial for teaching to more thoroughly focus on social media in science education, like Internet forums. Such media provide examples of content and learning tools for science teaching, which can promote learning and develop critical (scientific) media literacy.
The Use of Statistical Investigation in Assessing Students' Performance in Statistics
Authors: Obrial Jessica T. , Lapinid Minie Rose Caramoan
Published: January 2022

The implementation of the K to 12 curricula brought changes in the Philippine Educational system. Among these is the inclusion of Statistics in the curriculum from preschool to Grade 11 of the Science, Technology, Engineering and Mathematics (STEM) track. The purpose of this action research is to develop an understanding of students’ statistical thinking in order to help teachers improve their practice of teaching Statistics. Students’ level of statistical understanding and performance were mapped based on the Guidelines for Assessment and Instruction in Statistics Education (GAISE) framework. Each of the 11 groups of Grade 10 students performed a statistical investigation using different worksheets as their guide. The instruments used were observation field notes, students’ written reports, achievement test results, and interviews. Findings show a majority of students had low level of statistical understanding and performance. Students had difficulty in formulating research questions, used survey as the only means of collecting data, and had limited presentation of results and interpretation. The teacher's role was crucial in the development of students' understanding. The challenges and the merits gained from the experience served as motivation to the teacher-researcher to continue and improve the use of statistical investigation in the teaching practice.
Introducing infrared cameras in the study of pigs’ physiology and health as cognitive apprenticeship in vocational education
Authors: Haglund Jesper , Henriksson Frida
Published: January 2022

As part of a participatory action-research project, students at the vocational upper-secondary Natural Resource Use programme in Sweden were introduced to infrared cameras in their courses. Students were video recorded as they used infrared cameras in the investigation of pigs’ physiology and health in the school’s pig house and explained generated infrared images in whole-class dialogue, together with involved teachers and researcher. Students found that a pig’s injured leg has high temperature, but also, more surprisingly, udder abcesses with lower temperature than the surrounding healthy udder tissue. Students and teachers expressed excitement in explaining the results. From the perspective of seeing vocational education as a kind of cognitive apprenticeship, students’ investigations and dialogue with the teachers and researcher are characterised as an example of authentic activity in a community of learners, where expertise was distributed across all participants.
O TRABALHO INFANTIL COMO UM PROBLEMA SOCIAL: PERCEPÇÕES SOBRE O TEMA
Authors: Schelbauer Larissa , Batista de Oliveira Gilson
Published: January 2022

O Brasil, desde 1994, vem cooperando internacionalmente com o objetivo comum de erradicação do trabalho infantil, especialmente em suas piores formas. No entanto, apesar da existência de legislações e políticas públicas específicas, caminha-se a passos lentos. As normativas de proteção integral as crianças e adolescentes evidenciam a necessidade da família, estado e sociedade responsabilizarem-se pelos cuidados com a infância. No entanto, historicamente o Brasil utilizou de mão-de-obra infanto juvenil e apenas recentemente, década de 90, passou a olhar o trabalho infantil como um problema social. Desta forma, coexistem legislações proibitivas e fiscalizatórias em relação ao trabalho infantil com vistas a proteção da infância com ideias culturais/sociais de que trabalho precoce pode servir para promoção social ao tornar as crianças responsáveis e afastar da criminalidade. Essa coexistência de ideias contraditórias e a persistência de mitos de meritocracia em relação ao trabalho na infância podem estar influenciando a eficácia das políticas públicas de combate ao trabalho infantil, uma vez que é necessário um engajamento social e a compreensão da população de que o trabalho da infância é um problema. Assim sendo, se elaborou e aplicou um questionário com vistas a averiguar qual a percepção atual da sociedade em geral sobre a temática. Percebeu-se que, embora se reconheça o trabalho infantil como um problema que traz prejuízos as crianças e adolescentes apenas um quarto das respostas afirmam realizar denúncias quando percebem situações de trabalho infantil.
IMPLEMENTASI WEBSITE SEBAGAI MEDIA INFORMASI DAN PROMOSI PADA PONDOK PESANTREN PUTRA-PUTRI ADDAINURIYAH 2 SEMARANG
Authors: Andik Prakasa Hadi  , Faiz Abdul Rokhman
Published: January 2022

Pondok Pesantren is a non-formal institution that is engaged in religious education. Pesantren is one of the places of education and preaching that is required to be able to provide information about Islam to the wider community. Easy access to information and communication, can be used to introduce pesantren to the public. Promotion using video profiles, brochures and banners has not been able to provide as much information as possible to the public, causing the pesantren to be less well known to the public.

This research, in general, aims to promote and provide the widest possible information about Pondok Pesantren Addainuriyah 2 and its activities to the public through the website. In particular, it makes it easy for the public to access information and communicate intensively with administrators of the Addainuriyah 2 Semarang Islamic boarding school. The research method in this study is based on the suitability and type of research, using the Research and Development (R&D) method. R&D in education is often called research-based development.

As a result of this research, the implementation of the website as a media of promotion and information in the Addainuriyah 2 Semarang Islamic boarding school, can provide a lot of information to the public, and as a means of communication between the general public and administrators of Pondok Pesantren Addainuriyah 2 Semarang.
A HOLISTIC MODEL IN LEARNING MULTIMEDIA DESIGN DEVELOPMENT
Authors: Edy Jogatama Purhita  , Dewi Widyaningsih  , Edwin Zusrony
Published: January 2022

Multimedia learning software development requires design methods, development tools, examination models and proficiency in Information Technology systems. It is necessary to formulate a Holistic Method which considers all related aspects in order to guide the quality of good design in designing Multimedia Learning. Implementing the findings of the Holistic Method formulation to build multimedia learning with good design quality. This study formulates the stages of multimedia development which include: Creative Brief, Design, Material Preparation, Compiling, Testing, Distribution. The multimedia software development process will be guided by 15 guiding elements which are grouped into 5 elements, include : content, appearance, utility aspect, user caracter, and didactic. These guiding elements are used to produce good quality learning multimedia designs. The methodology is called Holistic Multimedia Development Model (HMDM).
MEDIA BANTU PEMBELAJARAN BUDIDAYA TANAMAN SECARA HIDROPONIK DENGAN METODE DEMON-DISCO LEARNING BERBASIS ANDROID (studi kasus : SMK Kristen Terang Bangsa)
Authors: Setiyo Prihatmoko  , Sumaryanto  , Daniel Novianto
Published: January 2022

ABSTRAK

 

Pemanfaatan perangkat mobile dengan sistem operasi android yang digunakan sebagai media pendukung serta suplemen dalam meningkatkan hasil belajar dipadukan dengan metode demontrasi dan discovery learning atau demon-disco learning sangat diperlukan untuk membantu siswa dalam meningkatan hasil belajar pada mata pelajaran kompetensi kejuruan Budidaya tanaman secara hidroponik di SMK Kristen Terang Bangsa, karena penggunaan aplikasi berbasis android dapat memberikan pengalaman baru mengenai pemanfaatan teknologi informasi dan komunikasi, serta memberikan kesempatan kepada siswa untuk dapat belajar secara lebih mandiri.

Konsep yang dipilih sebagai media pembelajaran yaitu memaparkan materi tentang pengertian, pengenalan bagian-bagian, jenis –jenis,  serta quiz berisi soal tentang budidaya tanaman secara hidroponik. Penelitian ini menggunakan metode pengembangan produk Research and Development (RnD), dengan memakai 6 dari 10 tahap penelitian yaitu potensi dan masalah, pengumpulan data, desain produk, validasi desain, perbaikan desain, uji Coba produk.

Hasil dari penelitian ini adalah menghasilkan media pembelajaran  berupa aplikasi berbasis android. Adapun nilai validitas dari ahli media sebesar 2,6 dimana dinyatakan layak, sedangkan nilai validitas dari ahli materi sebesar 3,6 dimana dinyatakan layak, dan mampu meningkatkan nilai rata-rata pada mata pelajaran kompetensi kejuruan budidaya tanaman secara hidroponik di SMK Kristen Terang Bangsa yang semula 67 (dengan 13 siswa yang belum mencapai KKM) menjadi 80 (dengan 4 siswa yang belum mencapai KKM).
Design Perancangan Forum Diskusi Karyawan Berbasis Web di PT. Rlogic
Authors: Achmat Mustajib  , Sulistianto Sutrisno Wanda
Published: January 2022

Ketika sebuah perusahaan beroperasi, tuntutan dan tanggung jawab melekat tanggung jawab perusahaan yang bersangkutan terhadap masyarakat sekitar. Komunikasi dalam diskusi internal dapat dikatakan lebih penting daripada komunikasi eksternal, karena diskusi harus berfungsi secara efektif dalam mencapai tujuannya menjaga hubungan dengan semua publik dalam diskusi. Dalam sebuah perusahaan ada banyak orang dari berbagai sosial dan profesional yang berbeda yang bekerja untuk tujuan yang sama. Diharapkan Forum Online Diskusi Karyawan dapat memberikan manfaat dan kemudahan berdiskusi, pemutakhiran layanan informasi yang efisien dan terpercaya kepada karyawan serta memudahkan karyawan untuk bertukar berbagai ide dan informasi serta dapat juga menyelesaikan konflik internal. Perancangan Pembangunan Forum Diskusi Online Karyawan via Internet melalui website ini menggunakan aplikasi PHP dan MySQL.
PERANCANGAN IDENTITAS PERUSAHAAN DALAM BENTUKSTATIONERY DESAIN DI RUMAH KREASI GRAFIKA
Authors: Setiyo Adi Nugroho  , Daniel Rudjiono  , Febrian Rahmadhika
Published: January 2022

Rumah Kreasi Grafika is a clothing business that was established in 2020. This clothing business is located at Jalan Grafika Raya, Gedawang, Banyumanik District, Semarang City, Central Java. This company still has shortcomings, especially in the field of design, so that marketing is not very successful. This is due to a lack of knowledge about the value of design in a company.The thing that is most prioritized in the design of making this stationery set is to meet the graduation requirements for the final project course and provide a new perspective in utilizing stationery sets as a means of supporting the company's progress. Where is the initial stationery set that has a design value that does not sell well and is still incomplete.In designing the design of a stationery set, it is necessary to choose the type of font, color and also the composition of the design because these three aspects are vital and can have a serious impact on the effectiveness of the stationery set.
Tren desain arsitektur di indonesia yang mempengaruhi kerentanan bangunan terhadap gempa
Authors: Livian Teddy
Published: January 2022

Indonesia is an earthquake-prone zone country. Many victims of life and material due to the earthquake that occurred in Indonesia. One of them is the result of the collapse of the building. Buildings in Indonesia should be designed to withstand earthquakes. The resistance of buildings to earthquakes is highly dependent on their geometric configuration which is closely related to form and space. With the development of the era, it also affects the architectural 'trend' favored by architects and clients. But without realizing this trend can affect the vulnerability of buildings to earthquakes. Design trends carried out by architects that can affect the vulnerability of buildings to earthquakes are: 1). Architectural styles that are developing in the world, 2). Transformation of the geometric form of the building, 3). Selection of building materials, 4). Placement of swimming pools on the roofs of high-rise buildings, and 5). Use of building modules.
PENERAPAN METODE FUZZY MAMDANI DALAM MENENTUKAN HARGA JUAL PONSEL PINTAR BEKAS (STUDI KASUS PADA KAYYIS CELLULAR DEPOK)
Authors: Rastic Andrari Finata , Maimunah Maimunah , Nurmala Dewi Qadarsih
Published: January 2022

This study discusses the application of fuzzy logic in determining the selling price of used cellphones with a case study on Kayyis Celluler Depok. This study was conducted to find out how to determine the selling price of used smart phones using the Mamdani fuzzy method approach. There are 4 fuzzy variables that will be modeled in this study, consisting of 3 input variables, namely the condition of the cellphone, market price, and cellphone accessories, and 1 output variable, namely the selling price of used cellphones. The inference process in the application of fuzzy operators uses the MIN implication function. Furthermore, the composition of all fuzzy outputs is performed using the max method. Then, confirmation or called defuzzification is done using the Centroid method.
PERANCANGAN MEDIA PEMBELAJARAN UNTUK DISEMINASI TEKNOLOGI PERTANIAN PEKARANGAN BERBASIS MULTIMEDIA INTERAKTIF DI BPTP JAWA TENGAH
Authors: Ahmad Zainudin  , Daniel Rudjiono  , Rizki Sidik Wicaksono
Published: January 2022

Pemasyarakatan inovasi dan teknologi (inotek) pertanian di lahan pekarangan mendapat perhatian besar dari Kementerian Pertanian, dengan tujuan untuk meningkatkan produksi pangan dan akses masyarakat terhadap pangan, serta menjadi jaring pengaman sosial pada saat terjadi pandemi Covid-19. Sejak tahun 2017 BPTP Jawa Tengah telah mengembangkan Taman Agro Inovasi yang berisi display beragam inotek pertanian di pekarangan, untuk dijadikan sebagai tempat pembelajaran bagi penggiat maupun pelaku pertanian di pekarangan. Penelitian ini bertujuan untuk membuat multimedia interaktif untuk membantu penggiat dan calon pengguna dalam mempelajari inotek pertanian pekarangan yang didisplaykan di Taman Agro Inovasi tanpa harus berkunjung secara langsung di lokasi. Penelitian diawali dengan penggalian data dan informasi tentang inotek pertanian pekarangan yang didisplaykan di Taman Agro Inovasi, dilanjutkan dengan perancangan multimedia, pembuatan projek multimedia, validasi oleh pembimbing dan pakar, dan uji kelayakan multimedia. Berdasarkan hasil validasi dari ahli media, pakar materi dan sasaran pengguna menunjukkan bahwa produk multimedia yang dihasilkan sangat layak untuk digunakan dan dikembangkan untuk diseminasi inotek pertanian pekarangan sebagaimana yang diperagakan di Taman Agro Inovasi BPTP Jawa Tengah.
The effect of COVID-19 restrictions on atmospheric new particle formation in Beijing
Authors: Yan Chao , Shen Yicheng , Stolzenburg Dominik , Dada Lubna , Qi Ximeng , Hakala Simo , Sundström Anu-Maija , Guo Yishuo , Lipponen Antti , Kokkonen Tom , Kontkanen Jenni , Cai Runlong , Cai Jing , Chan Tommy , Chen Liangduo , Chu Biwu , Deng Chenjuan , Du Wei , Fan Xiaolong , He Xu-Cheng , Kangasluoma Juha , Kujansuu Joni , Kurppa Mona , Li Chang , Li Yiran , Lin Zhuohui , Liu Yiliang , Liu Yuliang , Lu Yiqun , Nie Wei , Pulliainen Jouni , Qiao Xiaohui , Wang Yonghong , Wen Yifan , Wu Ye , Yang Gan , Yao Lei , Yin Rujing , Zhang Gen , Zhang Shaojun , Zheng Feixue , Zhou Ying , Arola Antti , Tamminen Johanna , Paasonen Pauli , Sun Yele , Wang Lin , Donahue Neil M. , Liu Yongchun , Bianchi Federico , Daellenbach Kaspar R. , Worsnop Douglas R. , Kerminen Veli-Matti , Petäjä Tuukka , Ding Aijun , Jiang Jingkun , Kulmala Markku
Published: January 2022

Abstract. During the COVID-19 lockdown, the dramatic reduction of anthropogenic emissions provided a unique opportunity to investigate the effects of reduced anthropogenic activity and primary emissions on atmospheric chemical processes and the consequent formation of secondary pollutants. Here, we utilize comprehensive observations to examine the response of atmospheric new particle formation (NPF) to the changes in the atmospheric chemical cocktail. We find that the main clustering process was unaffected by the drastically reduced traffic emissions, and the formation rate of 1.5 nm particles remained unaltered. However, particle survival probability was enhanced due to an increased particle growth rate (GR) during the lockdown period, explaining the enhanced NPF activity in earlier studies. For GR at 1.5–3 nm, sulfuric acid (SA) was the main contributor at high temperatures, whilst there were unaccounted contributing vapors at low temperatures. For GR at 3–7 nm and 7–15 nm, oxygenated organic molecules (OOMs) played a major role. Surprisingly, OOM composition and volatility were insensitive to the large change of atmospheric NOx concentration; instead the associated high particle growth rates and high OOM concentration during the lockdown period were mostly caused by the enhanced atmospheric oxidative capacity. Overall, our findings suggest a limited role of traffic emissions in NPF.
Predicting atmospheric background number concentration of ice nucleating particles in the Arctic
Authors: Li Guangyu , Wieder Jörg , Pasquier Julie T. , Henneberger Jan , Kanji Zamin A.
Published: January 2022

Abstract. Mixed-phase clouds (MPCs) can have a net warming or cooling radiative effect on climate inﬂuenced by the phase and concentration of cloud particles. They have received considerable attention due to high spatial coverage and occurrence frequency in the Arctic. To initiate ice formation in MPCs at temperatures above −38 °C, ice nucleating particles (INPs) are required, which therefore have important implications on the radiative properties of MPCs by altering the ice to liquid ratio of hydrometeors. As a result, constraining ambient INP concentrations could promote accurate representation of cloud microphysical processes and reduce the uncertainties in estimating the cloud-phase-related climate feedback in climate models. Currently, INP parameterizations are lacking for remote Arctic environments. Here we present INP number concentrations and their variability measured in Ny-Ålesund (Svalbard) at temperatures between 0 and −30 °C. No distinguishable seasonal difference was observed from 12 weeks of ﬁeld measurements in autumn 2019 and spring 2020. In addition, correlating INP concentrations to aerosol physical properties was not feasible. Therefore, we propose a lognormal-distribution-based parameterization to predict Arctic INP concentration solely as a function of temperature. In practice, the parameterized variables allow for a) the prediction of the most likely INP concentrations and; b) the retrieval of the governing distribution of INP concentrations at given temperatures in the Arctic.
The Positive Effect of Formaldehyde on the Photocatalytic Renoxification of Nitrate on TiO2 Particles
Authors: Liu Yuhan , Wang Xuejiao , Sheng Mengshuang , Ye Chunxiang , Shang Jing
Published: January 2022

Abstract. Renoxification is the recycling of NO3−/HNO3 into NOx under illumination; it is promoted by the photocatalysis of TiO2. Formaldehyde (HCHO), the most abundant carbonyl compound in the atmosphere, may participate in the renoxification of nitrate-doped TiO2 (NO3−-TiO2) aerosols. In this study, we established an environmental chamber reaction system under different light sources, excluding direct photolysis of nitrate by adjusting the illumination wavelength, to explore the photocatalytic renoxification process. It is suggested that HCHO and TiO2 have a significant synergistic effect on photocatalytic renoxification via the NO3−-NO3•-HCHO-HNO3-NOx pathway. Adsorbed HCHO may react with nitrate radicals through hydrogen abstraction to form HNO3 on the surface, resulting in the mass generation of NOx. We found that for 4 wt% NO3−-TiO2 aerosols (e.g., KNO3-TiO2), the NOx concentration reached up to 110 ppb, and was 2 orders of magnitude higher than in the absence of HCHO. Nitrate type and contents, relative humidity, and HCHO concentration were found to influence NOx release. The significant synergistic enhancement effect of renoxification affects photochemical processes such as atmospheric oxidation and nitrogen cycling on the surfaces of particles containing semiconductor oxides, with the participation of hydrogen donor organics.
Retrieval of aerosol properties using relative radiance measurements from an all-sky camera
Authors: Román Roberto , Antuña-Sánchez Juan C. , Cachorro Victoria E. , Toledano Carlos , Torres Benjamín , Mateos David , Fuertes David , López César , González Ramiro , Lapionok Tatyana , Herreras-Giralda Marcos , Dubovik Oleg , de Frutos Ángel M.
Published: January 2022

Abstract. This paper explores the potential of all-sky cameras to retrieve aerosol
properties with the GRASP code (Generalized Retrieval of Atmosphere and
Surface Properties). To this end, normalized sky radiances (NSRs) extracted
from an all-sky camera at three effective wavelengths (467, 536 and
605 nm) are used in this study. NSR observations are a set of relative
(uncalibrated) sky radiances in arbitrary units. NSR observations have been
simulated for different aerosol loads and types with the forward radiative
transfer module of GRASP, indicating that NSR observations contain information
about the aerosol type, as well as about the aerosol optical depth (AOD), at
least for low and moderate aerosol loads. An additional sensitivity study with
synthetic data has been carried out to quantify the theoretical accuracy and
precision of the aerosol properties (AOD, size distribution parameters, etc.)
retrieved by GRASP using NSR observations as input. As a result, the
theoretical accuracy of AOD is within ±0.02 for AOD values lower than or equal
to 0.4, while the theoretical precision goes from 0.01 to 0.05 when AOD at
467 nm varies from 0.1 to 0.5. NSR measurements recorded at
Valladolid (Spain) with an all-sky camera for more than 2 years have been
inverted with GRASP. The retrieved aerosol properties are compared with
independent values provided by co-located AERONET (AErosol RObotic NETwork)
measurements. AODs from both data sets correlate with determination coefficient
(r2) values of about 0.87. Finally, the novel multi-pixel approach of GRASP
is applied to daily camera radiances together by constraining the temporal
variation in certain aerosol properties. This temporal linkage (multi-pixel
approach) provides promising results, reducing the highly temporal variation
in some aerosol properties retrieved with the standard (one by one or
single-pixel) approach. This work implies an advance in the use of all-sky
cameras for the retrieval of aerosol properties.
Global inventory of the stable isotopic composition of methane surface emissions, augmented by new measurements in Europe
Authors: Menoud Malika , van der Veen Carina , Lowry Dave , Fernandez Julianne M. , Bakkaloglu Semra , France James L. , Fisher Rebecca E. , Maazallahi Hossein , Stanisavljević Mila , Nęcki Jarosław , Vinkovic Katarina , Łakomiec Patryk , Rinne Janne , Korbeń Piotr , Schmidt Martina , Defratyka Sara , Yver-Kwok Camille , Andersen Truls , Chen Huilin , Röckmann Thomas
Published: January 2022

Abstract. Recent climate change mitigation strategies rely on the reduction of methane (CH4) emissions. δ13CCH4 and δ2HCH4 measurements can be used to distinguish sources and thus to understand the CH4 budget better. The CH4 emission estimates by models are sensitive to the isotopic signatures assigned to each source category, so it is important to provide representative estimates of the different CH4 source isotopic signatures worldwide. We present new measurements of isotope signatures of various, mainly anthropogenic, CH4 sources in Europe, which represent a substantial contribution to the global dataset of source isotopic measurements from the literature, especially for δ2HCH4. They improve the definition of δ13CCH4 from waste sources, and demonstrate the use of δ2HCH4 for fossil fuel source attribution. Results from previous studies were combined in a common database that we updated with our new measurements, as well as with additional literature. We found that microbial sources are generally well characterised. The large variability in fossil fuels isotopic compositions requires particular care in the choice of weighting criteria for the calculation of a representative global value. The global dataset could be further improved by measurements from African, South American and Asian countries, as well as more measurements from pyrogenic sources. The final version of the European methane isotope database coupled with a global inventory of fossil and non-fossil δ13CCH4 and δ2HCH4 source signature measurements, is available at: https://doi.org/10.24416/UU01-4PO56T (Menoud et al., 2021a).
EuLerian Identification of ascending AirStreams (ELIAS 2.0) in numerical weather prediction and climate models – Part 1: Development of deep learning model
Authors: Quinting Julian F. , Grams Christian M.
Published: January 2022

Abstract. Physical processes on the synoptic scale are important modulators of the large-scale extratropical circulation. In particular, rapidly ascending airstreams in extratropical cyclones, so-called warm conveyor belts (WCBs), modulate the upper-tropospheric Rossby wave pattern and are sources and magnifiers of forecast uncertainty. Thus, from a process-oriented perspective, numerical weather prediction (NWP) and climate models should adequately represent WCBs. The identification of WCBs usually involves Lagrangian air parcel trajectories that ascend from the lower to the upper troposphere within 2 d. This requires expensive computations and numerical data with high spatial and temporal resolution, which are often not available from standard output. This study introduces a novel framework that aims to predict the footprints of the WCB inflow, ascent, and outflow stages over the Northern Hemisphere from instantaneous gridded fields using convolutional neural networks (CNNs). With its comparably low computational costs and relying on standard model output alone, the new diagnostic enables the systematic investigation of WCBs in large data sets such as ensemble reforecast or climate model projections, which are mostly not suited for trajectory calculations. Building on the insights from a logistic regression approach of a previous study, the CNNs are trained using a combination of meteorological parameters as predictors and trajectory-based WCB footprints as predictands. Validation of the networks against the trajectory-based data set confirms that the CNN models reliably replicate the climatological frequency of WCBs as well as their footprints at instantaneous time steps. The CNN models significantly outperform previously developed logistic regression models. Including time-lagged information on the occurrence of WCB ascent as a predictor for the inflow and outflow stages further improves the models' skill considerably. A companion study demonstrates versatile applications of the CNNs in different data sets including the verification of WCBs in ensemble forecasts. Overall, the diagnostic demonstrates how deep learning methods may be used to investigate the representation of weather systems and their related processes in NWP and climate models in order to shed light on forecast uncertainty and systematic biases from a process-oriented perspective.
Representation of the autoconversion from cloud to rain using a weighted ensemble approach: a case study using WRF v4.1.3
Authors: Yin Jinfang , Liang Xudong , Wang Hong , Xue Haile
Published: January 2022

Abstract. Cloud and precipitation processes remain among the largest sources
of uncertainties in weather and climate modelling, and considerable attention
has been paid to improving the representation of the cloud and precipitation
processes in numerical models in the last several decades. In this study, we
develop a weighted ensemble (named EN) scheme by employing several widely
used autoconversion (ATC) schemes to represent the ATC from cloud water to
rainwater. One unique feature of the EN approach is that the ATC rate is a
weighted mean value based on the calculations from several ATC schemes
within a microphysics scheme with a negligible increase in computation cost.
The EN scheme is compared with the several commonly used ATC schemes by
performing real case simulations. In terms of accumulated rainfall and
extreme hourly rainfall rate, the EN scheme provides better simulations than by using the single Berry–Reinhardt scheme, which was originally used in
the Thompson scheme. It is worth emphasizing, in the present study, that we only
pay attention to the ATC process from cloud water into rainwater with the
purpose of improving the modelling of the extreme rainfall events over southern
China. Actually, any (source and sink) term in a cloud microphysics scheme can
be treated with the same approach. The ensemble method proposed herein
appears to have important implications for developing cloud microphysics
schemes in numerical models, especially for the models with variable grid
resolution, which would be expected to improve the representation of cloud
microphysical processes in the weather and climate models.
One-dimensional velocity structure modeling of the Earth's crust in the northwestern Dinarides
Authors: Rajh Gregor , Stipčević Josip , Živčić Mladen , Herak Marijan , Gosar Andrej ,   the AlpArray Working Group
Published: January 2022

Abstract. The studied area of the northwestern (NW) Dinarides is located in the northeastern (NE)
corner of the Adriatic microplate and is bordered by the Adriatic foreland,
the Southern Alps, and the Pannonian basin. Its complex crustal structure is
the result of interactions among different tectonic units, the most
important of which are the Eurasian plate and the Adriatic microplate.
Despite numerous seismic studies in this tectonically complex area, there is
still a need for a detailed, small-scale study focusing mainly on the upper,
brittle part of the crust. In this work, we investigated the velocity
structure of the crust with one-dimensional (1-D) simultaneous hypocenter–velocity inversion
using routinely picked P- and S-wave arrival times. Most of the models
computed in the combined P and S inversion converged to a stable solution in
the depth range between 0 and 26 km. We further evaluated the inversion
results with hypocenter shift tests, high- and low-velocity tests, and
relocations. This helped us to select the best performing velocity model for
the entire study area. Based on these results and the seismicity
distribution, we divided the study area into three subregions, reselected
earthquakes and stations, and performed the combined P and S inversion for
each subregion separately to gain better insight into the crustal structure.
In the eastern subregion, the P velocities in the upper 8 km of the crust
are lower compared to the regional velocities and the velocities of the
other two subregions. The P velocities between 8 and 23 km depth are
otherwise very similar for all three models. Conversely, the S velocities
between 2 and 23 km depth are highest in the eastern subregion. The
NW and southwestern (SW) subregions are very similar in terms of the
crustal structure between 0 and 23 km depth, with slightly higher P
velocities and lower S velocities in the SW subregion. High
vP/vS values were obtained for the layers between 0 and 4 km depth.
Below that, no major deviations of vP/vS in the regional model from
the value of 1.73 are observed, but in each subregion we can clearly
distinguish two zones separated by a decrease in vP/vS at 16 km
depth. Compared to the model currently used by the Slovenian Environment
Agency to locate earthquakes, the obtained velocity models show higher
velocities and agree very well with some of the previous studies. In
addition to the general structural implications and the potential to improve
the results of seismic tomography, the new 1-D P and S velocity models can
also be used for reliable routine earthquake location and for detecting
systematic travel time errors in seismological bulletins.
Stronger microbial nutrient limitations in subsoil along the precipitation gradient of agroecosystem: Insights from soil enzyme activity and stoichiometry
Authors: Yang Jingjing , Guan Pingting , Zhang Peng , Wu Yunga , Wang Deli , Wu Donghui
Published: January 2022

Abstract. Soil extracellular enzymes are central in terrestrial ecosystem responses to climate change, and their research can be crucial for assessing microbial nutrient demand. However, the effects of climate-induced precipitation patterns on soil microbial nutrient demand in different soil profiles of agroecosystems are rarely studied. Here, we present how the precipitation gradient affects soil enzymes related to carbon (C), nitrogen (N) and phosphorus (P) cycling and identified microbial nutrient limitation determinants at five depth intervals (0–10, 10–20, 20–30, 30–40 and 40–50 cm) in seven agroecosystems. We found that N- and P- acquiring enzymes have a tendency to increase or decrease, but C- acquiring enzymes did not change along the precipitation gradient throughout soil profiles. Soil pH and moisture were the most important factors affecting the enzyme activity in 0–50 cm. Our results also revealed a crucial soil boundary (at 20 cm) that differentiated responses of microbial nutrient limitation to precipitation changes. In the topsoil (0–20 cm), the stoichiometry of soil nutrients did not vary with precipitation. Microbial P limitation was exacerbated with increased precipitation, which was controlled by soil pH and moisture in the topsoil. In contrast, in the subsoil (20–50 cm), soil nutrient stoichiometry decreased with increasing precipitation, and microbial C and P limitation displayed a positive correlation with precipitation. Furthermore, microbial P limitation tended to be stronger in the subsoil than in the topsoil along the precipitation gradient. Microbial C and P limitation was regulated by the soil nutrients and their stoichiometry in the subsoil. Our study is an essential step in soil enzyme activity and stoichiometry response to precipitation in agroecosystems and provides novel insights into understanding microbial nutrient limitation mechanisms in soil profiles along the precipitation gradient.
Geochemistry of hydrothermally altered rocks from the Asarel porphyry copper deposit, Central Srednogorie
Authors: Hikov Atanas
Published: January 2022

The distribution of major and trace elements in hydrothermal alteration zones (propylitic, argillic, sericitic and advanced argillic) from the Asarel porphyry copper deposit is studied. Strontium was found to demonstrate the most characteristic behaviour among all studied elements – it is depleted from propylitic, argillic and sericitic rocks and concentrates in advanced argillic rocks where it is included in alunite and APS minerals. Manganese, Co, Ni, Zn, Cs, Y, MREE and HREE are strongly mobile and are depleted with increasing of alteration degree, while Rb concentrates in sericitic rocks. Titanium, Zr, V, Ta, Nb, Th, U and LREE have inert behaviour during alteration. Alunite, APS minerals and rutile are the minerals that control the geochemistry of trace elements in the zones of advanced argillic alteration.
Geological and engineering geological settings of the radioactive waste repository Novi Han, Lozen Mountain, Bulgaria
Authors: Antonov Dimitar , Varbanov Radoslav
Published: January 2022

The Repository for Radioactive Waste (RAW) Novi Han of the Russian “Radon” type was built in the middle of 60-es, last century, in the Lozen Mountain near Sofia. Unconditioned wastes from medicine, military sources and scientific research activities are stored in it. The repository site has not been selected after detailed geological, hydrogeological and engineering geological investigations including safety assessment procedures. Such investigations were realized in the early 90-es by institutes of the Bulgarian Academy of Sciences. Later, in 2000–2002 the studies of the site have been enlarged with the authors` participation. These newly performed investigations have taken into account the requirements of the International Atomic Energy Agency (IAEA) documents. In the paper the results concerning the engineering geological and hydrogeological settings of the site are presented. Its geological and tectonic conditions are discussed as well. The data will be used for future analyses of impact of the Novi Han repository over the environment including radiological safety assessment.
Implementasi Sistem Informasi Penggajian Pada Cv. Mitra Boga Tama Menggunakan Metode Zachman
Authors: Setiawan Andri , Sugiyono Sugiyono
Published: January 2022

Sistem penggajian karyawan merupakan sistem yang membantu perusahaan dalam mengelola hal-hal yang berhubungan dengan gaji. Sistem ini dibuat untuk memudahkan pekerjaan Human Resource Department (HRD) dalam mengelola dan membayar gaji kepada setiap karyawan yang bekerja. CV. Mitra Boga Tama adalah perusahaan distributor yang bergerak di bidang penyediaan makanan berprotein seperti daging sapi, ayam, dan ikan beku. Banyaknya jumlah karyawan di perusahaan ini membutuhkan sistem penggajian yang baik agar proses pembayaran gaji karyawan tidak terlambat. Selama ini proses pengajian di CV. Mitra Boga Tama masih menggunakan Microsoft excel, menemukan kesalahan ketik dan kesalahan perhitungan sering terjadi saat merekap data berupa absensi, gaji pokok dan tunjangan. Sehingga dibutuhkan proses berulang kali dalam penyusunan laporan penggajian karyawan. Untuk mengatasi hal tersebut maka perlu dibuat sistem penggajian dengan menggunakan metode Zachman agar lebih terstruktur dan dapat diakses secara online dimana perhitungan gaji dapat dilakukan secara otomatis dan dapat digunakan untuk mencetak laporan. Selain itu juga diharapkan sistem ini dapat diakses oleh pegawai, sehingga pegawai dapat mencetak slip gaji untuk mengetahui data penggajian setiap bulannya
Đặc điểm lâm sàng, cận lâm sàng của bệnh nhân hẹp 3 thân động mạch vành mạn tính
Authors: Tuấn Hồ Minh , Giang Phạm Thái , Biên Vũ Điện
Published: January 2022

Mục tiêu: Nghiên cứu đặc điểm lâm sàng, cận lâm sàng bệnh nhân hẹp 3 thân động mạch vành mạn tính có điểm Syntax £ 22 được can thiệp qua da. Đối tượng và phương pháp: 177 bệnh nhân hẹp 3 thân động mạch vành điều trị tại Bệnh viện Tim Tâm Đức, từ tháng 01/2017 đến tháng 07/2020. Thiết kế nghiên cứu: Tiến cứu, mô tả cắt ngang, chọn mẫu thuận tiện, thu thập dữ liệu các triệu chứng lâm sàng, cận lâm sàng. Kết quả: Tuổi trung bình là 65,94 ± 10,85 năm, nam chiếm tỷ lệ cao 67,2%. BMI trung bình là 23,85 ± 2,97. Các yếu tố nguy cơ mạch vành thường gặp: Tăng huyết áp 89,8%, rối loạn mỡ máu 88,1%, ĐTĐ 44,1%, hút thuốc lá 14,1% và tiền sử gia đình bệnh ĐMV 11,3%. Đau thắt ngực CCS II chiếm tỷ lệ cao nhất với 47,5%, đau thắt ngực CCS III chiếm 51,9%. Bệnh thận mạn 40,7%, rung nhĩ 6,8%. Tỷ lệ LVEF ≥ 50% chiếm 81,4%, có rối loạn vận động vùng chiếm 36,7%. Phân tầng nguy cơ bằng test không xâm lấn theo ACC/AHA và ESC: Tỷ lệ nguy cơ trung bình chiếm 21,5%, nguy cơ cao chiếm 78,5%. Tỷ lệ mỗi thân ĐMV tổn thương ở LM là 14,8%, LAD là 98,9%, LCX là 99,4% và RCA 100%. Điểm Syntax là 15,84 ± 3,85 với khoảng điểm từ 7 đến 22. Kết luận: Các yếu tố nguy cơ mạch vành thường gặp: Tăng huyết áp, rối loạn mỡ máu. Triệu chứng lâm sàng phần lớn là đau thắt ngực CCS II và CCS III chiếm tỷ lệ cao nhất. Tỷ lệ thay đổi ECG thấp. Tỷ lệ phân xuất tống máu thất trái bảo tồn LVEF ≥ 50% cao. Phân tầng nguy cơ bằng test không xâm lấn theo ACC/AHA và ESC phần lớn là nguy cơ cao. Tỷ lệ mỗi thân ĐMV tổn thương chiếm tỷ lệ cao riêng với LM là thấp. Điểm Syntax thấp với khoảng điểm từ 7 đến 22.
Apresentação
Authors: Vieira Fernando
Published: January 2022

A ciência no Brasil foi duramente atingida pela pandemia. Enfrentando desde 2019 um governo que a desqualificava, assistimos com a pandemia a perda de intelectuais, o encolhimento de congressos e outras perdas que nos afetaram. A revista Entropia em seu número 10, continua nesses tempos sombrios divulgando pesquisas no campo das Ciências humanas. E nós, da equipe editorial, convidamos a leitura dessa edição.
QUEM QUER A SUA MTV? CAMINHOS DE UMA NOVA EMISSORA NO BRASIL (1984-1990)
Authors: Pereira de Oliveira Carlos Eduardo
Published: January 2022

O presente trabalho analisa as tentativas de entrada da MTV no Brasil durante a década de 1980, no contexto de transição democrática e a promulgação da Constituição Federal de 1988. A MTV Brasil inicia suas operações em 1990, através do acordo entre Grupo Abril e Viacom, sendo a primeira emissora segmentada no país, direcionada ao público jovem e transmitida em UHF. Sua particularidade repousa na transmissão em rede aberta e inserida no contexto de renovação e liberdade da sociedade brasileira, que estruturaram narrativas de abertura política, social e cultural, tendo como marco a promulgação da Constituição Federal de 1988.
RELAÇÃO ENTRE ESTADO E SOCIEDADE: UMA REFLEXÃO SOBRE A RELAÇÃO ENTRE O ESTADO E OS MOVIMENTOS SOCIAIS ATRAVÉS DA CAMPANHA “NÃO AO PROSAVANA”
Authors: Maúngue Hélio
Published: January 2022

No sentido de modernizar capitalizar a agricultura moçambicana, o Estado lançou o programa ProSavana, como um modelo de desenvolvimento rural e agrícola. A campanha “Não ao ProSavana” se manifestou como uma forma, não somente, de intermediação política, mas também de diálogo, conflito, plataforma de fala e de contestação perante ao Estado moçambicano e dos parceiros internacionais no programa. Procuramos olhar para a campanha “Não ao ProSavana” como uma aparição dos movimentos sociais, como grupos de pressão que excluídos dos processos de tomada de decisão e de formulação de políticas ou programas sociais, procuraram estabelecer contatos com o Estado para reverter essa situação. O trabalho, ajuda-nos a perceber como se encontram às dinâmicas participatórias e democráticas no desenho de políticas públicas para o desenvolvimento rural, bem como está visão sobre a interface socioestatal em Moçambique. Essa interface demonstra a existência de diferentes visões de mundo sobre o desenvolvimento rural e consequente melhoria das condições de vida das comunidades. O fato do ProSavana ter sido concebido ao estilo topdown, se constituiu uma força para pressionar o seu fim.
Vertebrobasilar and anterior cerebral circulation dolichoectasia in a 67-year-old woman presenting as stroke
Authors:   Department of Radiology, College of Medicine, University of Ibadan, Oyo State, Nigeria., Akinwunmi Omolola M
Published: January 2022

Background: Dolichoectasia is an anomalous condition of the blood vessels that arise due to architectural abnormalities in the weakened walls. Case description: This is a case of a 67-year-old woman being managed for chronic hypertension who initially presented with features of left hemispheric stroke. Neurovascular imaging revealed dolichoectasia of both the vertebrobasilar and anterior cerebral circulations. Conclusion: This clinical scenario is peculiar because simultaneous affectation of both vascular territories is extremely rare. Management of her condition was a diagnostic dilemma due to the rarity of her pathology and the low-resource setting of our environment. Keywords: dolichoectasia; vertebrobasilar; anterior cerebral circulation
Adverse local tissue reaction after ceramic-on-ceramic total hip arthroplasty
Authors:   Centre Hospitalier Universitaire d’Ambroise Paré, Department of Orthopaedics and Traumatology, Mons, Hainaut, Belgium., Jérôme Valcarenghi , Nicolas Poinot ,   Centre Hospitalier Universitaire d’Ambroise Paré, Department of Orthopaedics and Traumatology, Mons, Hainaut, Belgium., Pierre-Bernard Verstraeten ,   Centre Hospitalier Universitaire d’Ambroise Paré, Department of Orthopaedics and Traumatology, Mons, Hainaut, Belgium., Esfandiar Chahidi ,   Centre Hospitalier Universitaire d’Ambroise Paré, Department of Orthopaedics and Traumatology, Mons, Hainaut, Belgium., Benoit Caufriez ,   Centre Hospitalier Universitaire d’Ambroise Paré, Department of Orthopaedics and Traumatology, Mons, Hainaut, Belgium., Xavier Collard ,   Centre Hospitalier Universitaire d’Ambroise Paré, Department of Orthopaedics and Traumatology, Mons, Hainaut, Belgium.
Published: January 2022

Outside of cobalt-chromium alloy articulations, the development of adverse local tissue reaction (ALTR) after total hip arthroplasty (THA) is uncommon but remains a significant complication [1]. ALTR is used to describe a granulomatous or destructive cystic lesion that develops around a THA [1,2]. The patient often describes the first sign of the development of ALTR and pseudotumor formation as discomfort and pain. ALTR causes soft tissue mass, osteolysis, bone erosion, and significant damage to periarticular soft tissues, leading to total joint failure and instability [1]. In THA, ALTR may develop around metal-onpolyethylene implants due to taper corrosion and around metal-on-metal (MoM) bearing surfaces [3-6].