bluuebunny/crossref_metadata_2025 huggingface dataset:
Seasonal Variability of Sea Surface Chlorophyll-a at West Borneo Island
Authors: Radjawane Ivonne Milichristi , Saleh Ejria , Napitupulu Gandhi , Abdillah Muhammad Rais , Hassan Mohd Azamuddin Mohd
Published: May 2024

The optimization of marine fisheries activities can be achieved through an understanding of the timing of fishing, access to good information, and knowledge of oceanographic conditions. These conditions often lead to significant nutrient enrichment in the surface layer of the ocean, which in turn increases the sea surface chlorophyll-a (SSC). In the context of the west Borneo Island region, seasonal variability in SSC plays a crucial role in determining potential fishing grounds. The objectives of this study are  examining the seasonal variability of SSC, identifying upwelling and downwelling processes through analysis of sea surface wind (SSW), and determining the climatological distribution of Sea Surface Temperature (SST) and sea surface height (SSH) within the water off Labuan Island, Malaysian Borneo, and the Karimata Strait, West Kalimantan, Indonesia. Remote sensing data spanning from 2007 to 2021 were analyzed, encompassing SSC, SST, SSH anomalies, SSW, wind stress curl, and Ekman pumping. Additionally, rainfall and river discharge were examined as supplementary indicators of these oceanographic processes. The findings indicate that SSW plays a pivotal role in driving upwelling and downwelling processes, which in turn influence SSC variability. In Labuan waters, upwelling occurs primarily from November to February, while downwelling predominates from June to September. In contrast, in the Karimata Strait, upwelling is identified from July to September, with downwelling prevalent between March and May. Upwelling events in both regions are characterized by increasing SSC, accompanied by decreasing SST and SSH, while the opposite trends are observed during downwelling events. The peak of rainfall and river discharge in December is noted to potentially enhance SSC variability in the Karimata Strait compared to Labuan Island waters.
The Impact of Land Use Change on Groundwater Depth in The Groundwater Transition Zone of Merapi Volcano, Yogyakarta, Indonesia
Authors: Sejati Sadewa Purba , Neritarani Rivi
Published: May 2024

Studies of the impact of land use change on groundwater on the southern slopes of Merapi Volcano tend to be carried out on a macro basis. Micro studies, especially in groundwater transition zones,  have not been previously conducted. In-depth studies need to be undertaken in the groundwater transition zone on the southern slope of Merapi Volcano to identify the impact of land use change on the dynamics of groundwater depth in 2012-2021. Data was collected through field surveys and remote sensing. Groundwater depth data were collected through field surveys in 2012 and 2021. Groundwater depth data were measured in dug wells. The location of the excavated well was determined by using the systematic random sampling method. Groundwater depth data were analyzed using the kriging spatial interpolation method. The results of groundwater depth interpolation in 2012 and 2021 were then compared to determine the changes. Rainfall data were also used in the study. Rainfall data were collected using remote sensing data through cloud computing. Literature studies related to the condition of monitoring wells were also used to determine groundwater dynamics based on rainfall conditions. Data on land use change for 2012-2021 were collected using remote sensing data. Land use change was analyzed using pansharpening, supervised classification, and overlay methods. Cross-tabulation analysis was performed to determine the impact of land use change on groundwater depth. The groundwater depths in the study area were classified into <6 m, 6-11 m, and >11 m. Changes in land use from irrigated rice fields to settlements and open land to scrub occurred predominantly in the study area. Changes in land use did not have a significant impact on changes in groundwater depth in the study area. Based on cross-tabulation analysis, it is known that 11.46% of the study area experienced groundwater deepening, 7.73% experienced groundwater siltation, and 80.81% experienced no change in groundwater depth in the period of 2012-2021. Groundwater deepening generally occurs in areas dominated by scrub and settlements far from river channels. Groundwater that grows shallower and does not change in depth occurs around irrigated rice fields close to river channels. Land use change that does not significantly impact groundwater depth is likely to occur because rainfall in the study area is high. The aquifer material in the study area also had an excellent ability to drain groundwater coming from the upper slopes of Merapi Volcano.
Urban Sprawl in Yogyakarta: An Analysis of Urban Morphology in Sinduadi Village in 2021
Authors: Cahyani Anggi , Giyarsih Sri Rum
Published: May 2024

Urban sprawl has become a concern in development because of its negative impact onsustainable development. Such a special trend is apparent in the transformation of a peri-urban area of Sinduadi Village that is directly affected by the city of Yogyakarta. The village is most likely affected by the urban sprawl phenomenon in the city of Yogyakarta, especially on the morphological aspect of the urban morphology. This study aims to analyze the urban morphology in the Sinduadi Village in 2021 as a result of the urban sprawl of Yogyakarta City. Using quantitative methods, this research is based on a primary data of obtained from field surveys through probability sampling method. The research data came from image interpretation and attribute data processing using ArcGIS 10.3 Software. Secondary data was obtained through Sentinel 2A Imagery while primary data was The data analysis used in this research is quantitative descriptive analysis and spatial analysis using maps. The analysis of the morphological form of the city is carried out by analysis of overlapping maps. This research found that the morphology of the city in the Sinduadi Village in 2021 is linear based on the center of the area on Magelang street This marked by activities in the center of the area are dominated by commercial activities, namely, trade and service. Therefore, regional needs can be accommodated. The center of the area has a high building density (BCR>70%). High densityresidential land surrounds the center of the area and its development follows a grid and spinal road network pattern. These findings show that Sinduadi village has experienced urban sprawl marked by development trend that trespasses its under bounded city.
Disability and Extreme Poverty in Indonesia: Analysis of National Socio-Economic Survey Data in 2020
Authors: Alabshar Nufi , Pujiwati Lina Agustina , Munawaroh Titik , Fatoni Zainal
Published: May 2024

Extreme poverty has become a global issue,and several studies indicate its relationship with disability. So far, there has been limited studies related to extreme poverty in Indonesia. Moreover, spesific segments, such as extreme poverty in persons with disabilities, are increasingly challenging to find. This study examines the effect of disability and other control variables on extreme poverty in Indonesia. The data is derived from the 2020 National Socio-Economic Survey (Susenas), which surveyed 1,258,328 individuals. The data was processed using STATA 17 software. The method used in this study is logistic regression by observing disability as the primary independent variable and other socio-demographic variables as control variables. Our analysis show that disability has a positive and significant relationship with extreme poverty. Control variables such as residence area, age group, sex, education, number of household members, marital status, and employment sector also play a role in influencing extreme individual poverty. These findings are expected to be able to enrich literature relatedto disability and extreme poverty in Indonesia as well as to provide input for the government in efforts to eradicate extreme poverty by paying attention to vulnerable groups,especially persons with disabilities.
Urban Farming as an Alternative in Realizing Sustainable City Development in Indonesia
Authors: Armansyah Armansyah , Giyarsih Sri Rum , Fathurohman Apit , Soetrisno Ade Latifa , Zaelany Andy Ahmad , Setiawan Bayu , Saputra Dani , Haqi Muamar , Lamijo Lamijo
Published: May 2024

Urban farming has been associated with sustainable living in urbanized areas. However, theinterconnection between the two need further studies. Alternatives for promoting sustainable living is especially in important in Indonesia because urbanization in the country is expanding, while the area of productive agricultural land is decreasing. The limited spaces become a challenge for urban residents that need land for settlements, planting, green open spaces, spaces for interaction and socializing, and recreation. Therefore, urban farming presents an alternative in answering the problems caused by urbanization. This research aims to explore the interconnection of urban farming and urbanization in an effort to realize sustainable urbandevelopment. This research is the initial part of an effort to create an integrated model of urban farming for urbanization for food security for urban residents (2023-2025) in the Innovation Research for Advanced Indonesia (RIIM) scheme. This study uses qualitative methods withinformants as a sample data source. Informants were selected using a purposive sampling technique, totaling 30 urban farming actors, with details of 10 informants from Palembang City, 10 from Bandung City, and 10 from Denpasar City. Collection through the stages of observation, in-depth interviews, and documentation. Data analysis uses the Miles and Hubberman Model with three stages, namely data reduction, data display, and drawing conclusions. The data validity test technique uses triangulation with the cross-check method. The results of the analysis found an interrelation between urban farming and urbanization in nine dimensions, namely; economy,social, environment, health, culture, food, education, tourism, and technology. The interrelationship between urban farming and urbanization is positive, which means that the positive impact of urban farming has an indication of minimizing the negative impact of urbanization. In addition, this interrelation is also relevant to the three principles of sustainable development, namely having the function of controlling environmental impacts to a minimum, economic and social functions.
Effect of recommending users and opinions on the network connectivity and idea generation process
Authors:   Binghamton University, Pandey Sriniwas , Sayama Hiroki ,   Binghamton University
Published: May 2024

The growing reliance on online services underscores the crucial role of recommendation systems, especially on social media platforms seeking increased user engagement. This study investigates how recommendation systems influence the impact of personal behavioral traits on social network dynamics. It explores the interplay between homophily, users’ openness to novel ideas, and recommendation-driven exposure to new opinions. Additionally, the research examines the impact of recommendation systems on the diversity of newly generated ideas, shedding light on the challenges and opportunities in designing effective systems that balance the exploration of new ideas with the risk of reinforcing biases or filtering valuable, unconventional concepts.
Some inequalities between degree- and distance-based topological indices
Authors: Nadeem Imran Imran
Published: May 2024

hefirst Zagreb indexM1and the second Zagreb indexM2belongto the class of degree-based topological indices which are defined fora simple connected graphGwith vertex setV={υ1,υ2,···,υn}asM1(G)=Pn ̇ı=1d2 ̇ıandM2(G)=Pυ ̇ı∼υ ̇jd ̇ıd ̇j,whered ̇ıis the degreeof vertexυiandυ ̇ı∼υ ̇jrepresents the adjacency of verticesυ ̇ıandυ ̇jinG. The eccentric connectivity index (ECI) is a distance basedtopological index, denoted byξc,isdefined asξc(G)=Pni=1ε ̇ıd ̇ı,whereε ̇ıis the eccentricity ofυ ̇ıinG. The aim of this paper is toderive the inequalities between ECI and the Zagreb indices. Moreover,we establish the inequalities between some variants of ECI and theZagreb indices
Modelling, Simulation and Thermo-Mechanical FEA of Gas Tungten Arc Welding of Austenitic Stainless Steel
Authors: U Sangameswaran
Published: May 2024

Abstract: The objective of study variation of temperature in TIG welded SS 318 plate of 3 mm work piece thickness in this work thermal analysis with help of ANSYS workbench carried out for [ T -joint and corner joint] stainless steel base metal (ss) using gas tungsten arc welding process. thermo-mechanical simulation is developed. Comparison with the temperature measured by the thermos couple’s records shows result present test data. The major components developed for usage construction various grade of stainless steel like SS318 Land some various nuclear grade special material and various thickness.
Svara Rachana - Audio Driven Facial Expression Synthesis
Authors: Khandelwal Karan , Pandita Krishiv , Priyankar Kshitij , Parakram Kumar , K Tejaswini
Published: May 2024

Abstract: Svara Rachana is a fusion of artificial intelligence and facial animation which aims to revolutionize the field of digital communication. Harnessing the ever-evolving power of neural networks in the form of Long Short-Term Memory (LSTM) model, Svara Rachana offers a cutting edge, interactive web application designed to synchronize human speech with realistic 3D facial animation. Users can upload or record an audio file and upload it to the web interface containing human speech, with the core functionality being the generation of synchronized lip movements on a 3D avatar. The system gives special emphasis on the accuracy of the system to generate reliable facial animation movements. By providing an interactive, human like 3D model, Svara Rachana aims to make machine to human interaction a more impactful experience by blurring the lines between humans and machines.
UNIVERSITY WOMEN VICTIMS OF VIOLENCE IN ACADEMIC SPACE
Authors: Andrade Helen Carine de , Balbino Michelle Lucas Cardoso , Antoniassi Junior Gilmar
Published: May 2024

The present research aims to verify views regarding violence against women in the university environment, with university women from a private institution in the interior of the State of Minas Gerais, Brazil. Through a case study narrative in which a conversation circle was used as a data collection method, between 22 (twenty-two) students from different courses offered by the higher education institution. The results show that 65% of the participants have already suffered some type of violence, of which 52% said they had suffered sexual harassment at university. The participants reveal that they have experienced acts of coercion, intellectual disqualification, moral and psychological aggression in the academic space. They also state that they do not feel safe in the university environment and experience learning difficulties, depression, anxiety, and stress in relation to academic spaces. In this study, it was possible to find information about the patterns of occurrence of these cases, such as: the types of violence, the places where they occur and the characteristics of the aggressors, which helps to identify risk areas and develop strategies for prevention and intervention, the to create a safer and more equal environment for all women in the university context.
Hybrid discrete-continuous compilation of trapped-ion quantum circuits with deep reinforcement learning
Authors: Preti Francesco , Schilling Michael , Jerbi Sofiene , Trenkwalder Lea M. , Nautrup Hendrik Poulsen , Motzoi Felix , Briegel Hans J.
Published: May 2024

Shortening quantum circuits is crucial to reducing the destructive effect of environmental decoherence and enabling useful algorithms. Here, we demonstrate an improvement in such compilation tasks via a combination of using hybrid discrete-continuous optimization across a continuous gate set, and architecture-tailored implementation. The continuous parameters are discovered with a gradient-based optimization algorithm, while in tandem the optimal gate orderings are learned via a deep reinforcement learning algorithm, based on projective simulation. To test this approach, we introduce a framework to simulate collective gates in trapped-ion systems efficiently on a classical device. The algorithm proves able to significantly reduce the size of relevant quantum circuits for trapped-ion computing. Furthermore, we show that our framework can also be applied to an experimental setup whose goal is to reproduce an unknown unitary process.
Virtual mitigation of coherent non-adiabatic transitions by echo verification
Authors: Schiffer Benjamin F. , Vreumingen Dyon van , Tura Jordi , Polla Stefano
Published: May 2024

Transitions out of the ground space limit the performance of quantum adiabatic algorithms, while hardware imperfections impose stringent limitations on the circuit depth. We propose an adiabatic echo verification protocol which mitigates both coherent and incoherent errors, arising from non-adiabatic transitions and hardware noise, respectively. Quasi-adiabatically evolving forward and backward allows for an echo-verified measurement of any observable. In addition to mitigating hardware noise, our method uses positive-time dynamics only. Crucially, the estimator bias of the observable is reduced when compared to standard adiabatic preparation, achieving up to a quadratic improvement.
Estudos conimbricenses de direito público - Volume 3
Authors: Santos Ednan Galvão
Published: May 2024

É com muita alegria que publicamos os Estudos Conimbricenses de Direito Público - Volume 3. Os temas desenvolvidos neste volume concernem à grande área epistemológica do Direito Público – aspecto que caracteriza, igualmente, as duas primeiras obras que organizamos. Em que pese a referida vinculação temática, o leitor poderá constatar a vocação interdisciplinar das pesquisas realizadas. Trata-se, com efeito, de uma marca inarredável dos nossos Estudos Conimbricenses. Que este terceiro volume dos Estudos Conimbricenses de Direito Público cumpra o seu desiderato: fomentar as meditações dos leitores acerca das temáticas ora propostas! Bons estudos!
Pengaruh Model Latihan Passing Terhadap Ketepatan Passing pada Futsal di BWSS VI Kota Jambi
Authors: Ahsani Riyad , Nugraha Ugi , Yanto Anggel Hardi
Published: May 2024

Penelitian ini bertujuan untuk mengetahui sejauh mana pengaruh model latihan passing terhadap ketepatan passing pada pemain futsal di BWSS VI Kota Jambi. Metode yang digunakan dalam penelitian ini adalah metode eksperimen yang menggunakan uji hipotesis yaitu Uji-T. Sampel penelitian sebanyak 20 orang dengan alur penelitian diawali tes awal, perlakuan, dan tes akhir. Intrumen tes yang digunakan tes ketepatan passing. Hasil analisis yang diperoleh dari uji-t menunjukan data bahwa T Hitung 13.18 dan T Tabel 1.72913 dengan d.b. n-1 (20-1 = 19 padaÎ± = 0,05. 95%) maka di bandingkan harga t hitung dengan harga t tabel. Perbandingan harga antara t hitung dan nilai presentil dari tabel distribusi diperoleh t hitung (13.18) > t tabel (1.72913). Ini berarti terdapat pengaruh model latihan passing terhadap ketepatan passing pada pemain futsal di BWSS VI Kota Jambi. Kesimpulan yang didapat dalam penelitian ini, maka dapat dikemukakan pula saran agar penelitian ini dimanfaatkan untuk meningkatkan ketepatan passing pada pemain futsal di BWSS VI Kota Jambi.
Kata Kunci : Model Latihan Passing, Ketepatan Passing
Survei Tingkat Kepuasan Siswa Terhadap Sarana dan Prasarana Olahraga di SMP Negeri Se-Kecamatan Sarolangun
Authors: Sohibuz Zikri Ahmad , Kurniawan Alexander
Published: May 2024

Penelitian ini bertujuan untuk mengetahui tingkat kepuasan siswa terhadap sarana dan prasarana olahraga di SMP Negeri Sekecamatan Sarolangun yaitu dengan Kuisioner atau angket. Penelitian ini termasuk penelitian deskriptif kuantitatif dengan data penelitian yaitu data kuantitatif, yang didapat melalui instrumen berupa Kuisionner atau angket. Penelitian ini menggunakan metode penelitian  survey. Hasil penelitian ini berupa Tingkat kepuasan siswa terhadap sarana dan prasarana PJOK di SMP Negeri Sekecamatan Sarolangun, secara keseluruhan memperoleh nilai maksimal:129,00; nilai minimal: 100 dengan hasil dari berbagai kategori seperti Sangat puas 7 atau 6%, ferkuensi dengan kategori Puas 36 atau 30%, frekuensi dengan kategori Cukup puas 41 atau 34%, frekuensi dengan kategori Tidak puas 0 atau 0%, frekuensi dengan kategori Sangat tidak puas 38 atau 31%. Sarana olahraga di SMP Negeri Sekecamatan Sarolangun terbatas dan tidak terawat dengan baik. Beberapa sarana olahraga tidak layak digunakan karena rusak atau tidak dapat digunakan lagi, dan guru tidak selalu menggunakannya selama proses pembelajaran.
Kata Kunci: Survey, Tingkat Kepuasan Siswa, Sarana dan Prasarana
ANALISIS IMPLEMENTASI PEMBELAJARAN TATAP MUKA PASCA PANDEMI COVID-19 DI SMAN 2 MUSI RAWAS UTARA
Authors: SIntiya CIndy , Yantoro Yantoro , Hendra Robi
Published: May 2024

Penelitian ini bertujuan untuk mengetahui implementasi dan kendala yang yang dihadapi dalam pembelajaran tatap muka pasca covid-19 di SMAN 2 Kabupaten Musi Rawas Utara. Penelitian ini menggunakan metode kualitatif dengan subjek penelitian kepala sekolah dan wali kelas SMAN 2 Musi Rawas Utara. Teknik pengumpulan data yang digunakan adalah observasi, wawancara dan dokumentasi. Hasil Penelitian menunjukkan bahwa pelaksanaan pembelajaran pasca pandemi Covid-19 di SMAN 2 Musi Rawas Utara dibagi menjadi tiga tahap yaitu tahap perencanaan, pelaksanaan dan evaluasi serta dalam setiap tahap sudah berjalan dengan cukup baik. Pada tahap perencanaan & persiapan pembelajaran pasca pandemi di SMA N 2 Musi Rawas Utara dilakukan dengan masih menerapkan protokol kesehatan. Tahap perencanaan yang dilakukan berupa penyusunan program tahunan, program semester, rencana pelaksanaan pembelajaran, dan rencana penilaian serta rencana penilaian. Kendala yang muncul dalam pelaksanaan pembelajaran pasca pandemi Covid-19 di SMAN 2 Musi Rawas Utara, yaitu waktu dan ruang yang sangat terbatas. Sehingga pada proses pembelajaran berlangsung guru kekurangan waktu untuk menyampaikan materi pelajaran seperti biasanya kepada peserta didik yang memilki waktu lebih lama.  Kendala lain yang muncul dalam pelaksanaan pembelajaran pasca pandemi adalah suasana kelas tidak kondusif, tingkat kesopanan & kedisiplinan siswa yang cenderung menurun.
Penggunaan Kunyit (Curcuma domestica Val.) dan Kandistatin® untuk Penanganan Penyakit ORF pada Kambing Saanen: Studi Kasus di BBPTU-HPT Baturraden
Authors: Wibowo Sarwo Edy , Alfandi Surya , Manin Fahmida , Rahayu Pudji , Insulistyowati Anie , Darlis Darlis , Maksudi Maksudi
Published: May 2024

Latar Belakang: Penyakit ORF disebut juga dengan Contagious Ecthyma (CE), Contagious Pustular Dermatitis (CPD), Sore Mouth disebabkan oleh virus dari genus Parapoxvirus menyerang kambing dan domba. Penyakit orf bersifat sangat mudah menular pada kambing dan domba, dan bersifat zoonosis. Tujuan: Penelitian ini bertujuan untuk mengetahui efektivitas penggunaan kunyit dan Kandistatin® untuk pengobatan penyakit ORF di BBPTU-HPT Baturaden. Metode: Metode yang digunakan meliputi pencatatan identitas ternak, anamnesa, pemeriksaan klinis, diagnosa dan pengobatan. Pengobatan yang digunakan yaitu parutan kunyit yang dicampur dengan minyak sayur serta Kandistatin®. Hasil: Berdasarkan hasil anamnesa, pemeriksaan fisik, dan gejala klinis Kambing Saanen pada kandang G di Balai Besar Pembibitan Ternak Unggul dan Hijauan Pakan Ternak (BBPTU-HPT) Baturraden terdapat 3 ekor kambing yang terinfeksi penyakit ORF dengan nomor eartag 1861, 1985, dan 1986. Kambing Saanen tersebut berusia + 4 bulan. Kambing Saanen yang mengalami infeksi ORF diberi penanganan  dengan menggunakan parutan kunyit yang dicampur dengan minyak sayur yang dibubuhkan dibibir kambing serta diberi Kandistatin® 1 ml sehari 2 kali selama 7 hari menunjukkan proses kesembuhan pada hari ketiga dan hari ketujuh dari hasil pemeriksaan menunjukkan kesembuhan. Kesimpulan: Penggunaan kunyit yang dicampurkan dengan minyak sayur serta pemberian Kandistatin® dapat digunakan untuk penanganan infeksi penyakit ORF.
WATER TREATMENT USING NATURAL COAGULANT: A REVIEW ON THE POTENTIAL UTILISATION OF BANANA WASTE
Authors: A. Azamzam Abdassalam , J. Alabdi Abdalahafid , Yahya Esam Bashir , Lalung Japareng , Idayu Ahmad Mardiana
Published: May 2024

The massive industrial and agricultural development in the past few years has increased the pollution level of water bodies. Several studies have concluded that the global depletion of freshwater resources will result in difficulties accessing clean water. Plant-based water treatment techniques have attracted great interest in the past few years due to their safety and cost-effectiveness compared with chemical-based techniques. Natural coagulants have been extensively studied in terms of the type of plant and the mechanism of coagulation. Banana is one of the most famous tropical fruits from the Musa genus in the Musaceae family. It is widely consumed in Malaysia, especially Musa acuminata, Musa balbisiana, and Musa paradisiaca, resulting in tremendous amounts of biomass residue, including peels, stems, and leaves, with high potential use for wastewater treatment applications. This review aims to highlight the advantages of natural coagulants and to discuss the potential use of different banana wastes in water treatment applications.
Viabilidad en el uso de envases de celulosa moldeada al ser mezclados en formulaciones para fabricar materiales cerámicos de construcción
Authors: Anteliz-Contreras Keila , Cely-Illera Leonardo , Diez-Contreras Karen Bibiana , Cely-Niño Jairo Wigberto
Published: May 2024

Anualmente se generan millones de toneladas de residuos sólidos a nivel mundial, y en Colombia, según cifras del Ministerio de Ambiente y Desarrollo Sostenible, para el año 2018, de las más de 12 millones de toneladas, solo se reciclaba el 17%. En los últimos años se están encaminando esfuerzos en buscar nuevas estrategias de gestión de residuos que minimicen esta problemática. Una de estas apunta a la industria de la construcción, ya que permite la inclusión de materias primas ajenas a su naturaleza. En este contexto, se evaluó mediante absorción de agua y resistencia a la compresión, las propiedades finales de formulaciones cerámicas usadas para materiales de construcción cuando se mezclan con Envases de Celulosa Moldeada (ECM) al 5%, 10% y 15% y se sinterizan a 900 °C. Los resultados evidenciaron que al aumentar la proporción de ECM la mezcla requiere mayores cantidades de agua, aumenta la porosidad y reduce las propiedades mecánicas, causando no conformidad con la normatividad nacional para mampostería. Sin embargo, los resultados muestran en otro contexto beneficios técnicos, económicos y ambientales como son, productos más livianos, posibilita la oportunidad de generar nuevos mercados permitiendo fabricar materiales con propiedades aislantes, y ayuda a incrementar el grado de rehabilitación en las canteras, reduciendo el agotamiento de la materia prima arcillosa, llegando a un impacto ambiental positivo.
Competitive intelligence quality assurance model: A property sector case
Authors: Nenzhelele Tshilidzi Eric
Published: May 2024

Competitive intelligence (CI) improves the quality of products and services, decision-making, and quality of life (Ram & Zhang, 2021). However, decision-makers are not satisfied with the quality of CI (Kordestani et al., 2021). Enterprises lack clarity and fail to ensure the quality of CI (Alshammakh & Azmin, 2021). Studies that previously attempted to resolve CI quality problems were limited in scope and focused too much on the quality of information rather than the overall CI quality. The purpose of this study is to test and validate an empirical CI quality assurance model, which will aid in the quality assurance of CI. The research was quantitative in nature and employed a questionnaire to collect data. The study randomly sampled 385 property practitioner firms from a population of 5226. Descriptive statistics and regression analysis were used to describe and assess the reliability and validity of the CI quality assurance model. The research identified six factors that influence the quality assurance of CI, namely, decision-makers, process and structure, organisational awareness and culture, and feedback, planning and direction, information collection, sorting, capturing, and storage, information analysis, and organisational culture, feedback, and CI dissemination. The research also confirmed that the model is valid and reliable.
Host resources and parasite traits interact to determine the optimal combination of host parasite-mitigation strategies
Authors: Dean Andrew , Childs Dylan , Corripio-Miyar Yolanda , Evans Mike , Hayward Adam , Kenyon Fiona , McNally Luke , MCNEILLY TOM , Pakeman Robin , Sweeney Amy , Nussey Dan , Pedersen Amy , Fenton Andy
Published: May 2024

1. Organisms have evolved diverse strategies to manage parasite
infections. Broadly, hosts may avoid infection by altering behaviour,
resist infection by targeting parasites, or tolerate infection by
repairing associated damage. Effectiveness of a strategy depends on
interactions between, e.g., resource availability, parasite traits
(virulence, life-history) and the host itself (nutritional status,
immunopathology). 2. To understand how these factors shape host
parasite-mitigation strategies, we developed a mathematical model of
within-host, parasite-immune dynamics in the context of helminth
infections. The model incorporated host nutrition and resource
allocation to different mechanisms of immune response: larval parasite
prevention; adult parasite clearance; damage repair (tolerance). We also
considered a non-immune strategy: avoidance via anorexia, reducing
intake of infective stages. Resources not allocated to immune processes
promoted host condition, whereas harm due to parasites and
immunopathology diminished it. Maximising condition (a proxy for
fitness), we determined optimal host investment for each
parasite-mitigation strategy, singly and combined, across different
environmental resource levels and parasite trait values. 3. Which
strategy was optimal varied with scenario. Tolerance generally performed
well, especially with high resources. Success of the different
resistance strategies (larval prevention or adult clearance) tracked
relative virulence of larval and adult parasites: slowly maturing,
highly damaging larvae favoured prevention; rapidly maturing, less
harmful larvae favoured clearance. Anorexia was viable only in the
short-term, due to reduced host nutrition. Combined strategies always
outperformed any lone strategy: these were dominated by tolerance, with
some investment in resistance. 4. Choice of parasite mitigation strategy
has profound consequences for hosts, impacting their condition, survival
and reproductive success. We show the efficacy of different strategies
is highly dependent on timescale, parasite traits and resource
availability. Models that integrate such factors can inform the
collection and interpretation of empirical data, to understand how those
drivers interact to shape host immune responses in natural systems.
A practical and UC-secure decentralized key management and authentication scheme based on blockchain for VNDN
Authors: Guo Xian , Almadhehagi Sarah , Feng Tao , Zhang Di , Jiang Yongbo , Fang Junli
Published: May 2024

In Vehicular Named Data Networking (VNDN), most of the existing key management mechanisms still rely on the hierarchical key trust model or the Public Key Infrastructure (PKI), in which the centralized certificate authority is used as a Trusted Third Party (TTP) to provide a signature for the user?s public key. Thus, the TTP becomes vulnerable to attacks and maybe there exists a singlepoint failure problem. In addition, the in-network caching in the VNDN may incur a threat to the system and make it is vulnerable to the DoS attack caused by Interest flooding aimed at the Content-Store. To tackle these security issues, we firstly propose an efficient decentralized key management solution based on blockchain for VNDN. Secondly, based on the proposed key management scheme, a lightweight mutual authentication scheme and a key agreement protocol for V2X are respectively proposed in this paper. Finally, we analyze the security attributes of our solutions in the Universally Composable (UC) framework. Our analysis results show that our novel schemes can meet the security requirements of our solutions. In addition, our experimental results show our new schemes have highly efficient, lower computation and communication costs than other related schemes.
A novel approach to source code assembling in the field of algorithmic complexity
Authors: Pesic Dordje , Vujosevic-Janicic Milena , Misic Marko , Protic Jelica
Published: May 2024

Computational complexity analysis plays an essential part in the education of computer and software engineers. For that reason, it is carefully studied in programming courses, as well as in the algorithms and data structures courses. The number of students who learn programming is rapidly growing, but the number of teachers cannot keep up with that trend. Therefore, it is necessary to develop tools that can ease and accelerate the daily tasks of teachers, especially for learning purposes and in the context of automating the processes of exam preparation. We propose a novel template- and rule-based approach and a corresponding software system for assembling synthetic source code segments of defined time complexity. Based on the developed grammar, the system can produce source code segments with a broad scope of different time complexities while guaranteeing the complexity of the generated segment. The system can be used for generating questions for exams as it can assemble a large number of different code segments that can be given as questions that have similar difficulty levels. The system was evaluated both by human experts and ChatGPT tool.
Reaching quality and efficiency with a parameter-efficient controllable sentence simplification approach
Authors: Menta Antonio , Garcia-Serrano Ana
Published: May 2024

The task of Automatic Text Simplification (ATS) aims to transform texts to improve their readability and comprehensibility. Current solutions are based on Large Language Models (LLM). These models have high performance but require powerful computing resources and large amounts of data to be fine-tuned when working in specific and technical domains. This prevents most researchers from adapting the models to their area of study. The main contributions of this research are as follows: (1) proposing an accurate solution when powerful resources are not available, using the transfer learning capabilities across different domains with a set of linguistic features using a reduced size pre-trained language model (T5-small) and making it accessible to a broader range of researchers and individuals; (2) the evaluation of our model on two well-known datasets, Turkcorpus and ASSET, and the analysis of the influence of control tokens on the SimpleText corpus, focusing on the domains of Computer Science and Medicine. Finally, a detailed discussion comparing our approach with state-of-the-art models for sentence simplification is included.
SSEPC cloud: Carbon footprint aware power efficient virtual machine placement in cloud milieu
Authors: Parida Bivasa , Rath Amiya , Pati Bibudhendu , Panigrahi Chhabi , Mohapatra Hitesh , Tien-Hsiungweng T , Buyya Rajkumar
Published: May 2024

The consumption of energy and carbon emission in cloud datacenters are the alarming issues in recent times, while optimizing the average response time and service level agreement (SLA) violations. Handful of researches have been conducted in these domains during virtual machine placement (VMP) in cloud milieu. Moreover it is hard to find researches on VMP considering the cloud regions and the availability zones along with the datacenters, although both of them play significant roles in VMP. Hence, we have worked on a novel approach to propose a hybrid metaheuristic technique combining the salp swarm optimization and emperor penguins colony algorithm, i.e. SSEPC to place the virtual machines in the most suitable regions, availability zones, datacenters, and servers in a cloud environment, while optimizing the mentioned quality of service parameters. Our suggested technique is compared with some of the contemporary hybrid algorithms in this direction like Sine Cosine Algorithm and Salp Swarm Algorithm (SCA-SSA), Genetic Algorithm and Tabu-search Algorithm (GATA), and Order Exchange & Migration algorithm and Ant Colony System algorithm (OEMACS) to test its efficacy. It is found that the proposed SSEPC is consuming 4.4%, 8.2%, and 16.6% less energy and emitting 28.8%, 32.83%, and 37.45% less carbon, whereas reducing the average response time by 11.43%, 18.57%, and 26% as compared to its counterparts GATA, OEMACS, and SCA-SSA respectively. In case of SLA violations, SSEPC has shown its effectiveness by lessening the value of this parameter by 0.4%, 1.2%, and 2.8% as compared to SCA-SSA, GATA, and OEMACS respectively.
MakeCode arcade platform for game-based learning
Authors: Vostinár Patrik
Published: May 2024

Currently, there is an increasing demand for specialists in the field of computer science. However, for many children computer science is not as interesting as it could be. They learn many topics in a very short time and usually do not have the motivation to continue their studies in Computer Science. The solution could be teaching through games. In this paper, we describe our research into whether the MakeCode Arcade environment is suitable for teaching programming through games (game-based learning platform). In the research, we compare the responses of 315 male and female students and the responses of elementary and secondary school students. The research showed that boys liked the MakeCode environment more than girls and also that programming games in this environment were more meaningful to them as the girls. In this contribution, we describe also our experiences with using this environment for teaching in extracurricular activity at our university, in normal lessons in primary schools, as a motivational tool for distance workshops and also for workshops for teachers.
CTA-Net: A gaze estimation network based on dual feature aggregation and attention cross fusion
Authors: Xia Chenxing , Tao Zhanpeng , Wang Wei , Zhao Wenjun , Ge Bin , Gao Xiuju , Li Kuan-Ching , Zhang Yan
Published: May 2024

Recent work has demonstrated the Transformer model is effective for computer vision tasks. However, the global self-attention mechanism utilized in Transformer models does not adequately consider the local structure and details of images, which may result in the loss of information and local details, causing decreased estimation accuracy in gaze estimation tasks when compared to convolution or sequential stacking methods. To address this issue, we propose a parallel CNNs-Transformer aggregation network (CTA-Net) for gaze estimation, which fully leverages the advantages of the Transformer model in modeling global context while the convolutional neural networks (CNNs) model in retaining local details. Specifically, Transformer and ResNet are deployed to extract facial and eye information, respectively. Additionally, an attention cross fusion (ACFusion) Block is embedded with CNN branch, which decomposes features in space and channels to supplement lost features, suppress noise, and help extract eye features more effectively. Finally, a dual-feature aggregation (DFA) module is proposed to effectively fuse the output features of both branches with the help feature a selection mechanism and a residual structure. Experimental results on the MPIIGaze and Gaze360 datasets demonstrate that our CTA-Net achieves state-of-the-art results.
Academician Vladimir Laskarev (1868-1954) and Paratethys
Authors: Malakhova Irina , Tesakov Alexey , Popov Sergey , Rundic Ljupko
Published: May 2024

Vladimir Laskarev (1868?1954) Russian and Serbian geologist strongly influenced geological literature by introducing a scientific term Paratethys for the series of intercontinental water basins separated from the Mediterranean Sea and the World Ocean by the Alpine orogeny. Laskarev?s scientific activity in the Russian Empire (1890?s ? 1919) was based in the University of Odessa. As an active university professor Vladimir Laskarev contributed to the geological mapping of the western provinces of Imperial Russia and to regional Neogene geology and paleontology of the Odessa and Bessarabian regions. Several of Laskarev?s students became well?known geologists and paleontologists during the Soviet era. Vladimir Laskarev?s contribution to geological studies in Serbia between 1920?1953 is extremely important. During his life in Belgrade, he published twice as many papers on various aspects of Neogene and Quaternary geology and paleontology. His most important contribution is certainly the official introduction of the term Paratethys into geological science. The steady spread of this term in scientific literature began in the early 1940?s and reached its peak in 1970?1980?s during international Neogene correlation and mapping projects.
Electrochemical investigation and thermodynamic assessment of the Mg-Pd system
Authors: Gierlotka W. , Terlicka S. , Gąsior W. , Dębski A. , Pęska M. , Polański M.
Published: May 2024

This paper presents the results of electromotive force measurements using coulometric titration technique for liquid and solid Mg-Pd alloys with concentrations up to 0.70 Mg mole fraction and at 918 K. These measurements made it possible to verify the homogeneity range of the occurring phases and phase boundaries in the investigated system. Based on the obtained results and other thermodynamic data found in the literature, the phase diagram of the Mg-Pd system was optimized using the CALPHAD method and ab initio calculations. The thermodynamics of the intermetallic phases, the liquid phase, and the solid solutions were described by the correct equations, which can be used in the future to calculate multicomponent systems with the Mg-Pd system as one of the binary components. The thermodynamic calculations successfully reproduced the Mg-Pd phase diagram.
Effect of oxidizing agents on the treatment of a Colombian lead ore by alternative hydrometallurgical processes
Authors: Borda J. , Salamanca I.D. , Torres R.
Published: May 2024

The metallurgy of lead presents significant environmental and public health challenges due to its toxicity. This is why it has been necessary to develop hydrometallurgical processes as alternatives for obtaining metal with a more sustainable and environmentally safe approach. However, these processes may involve complex chemical reactions and the use of specific chemical reagents, which may require rigorous control and monitoring to ensure the efficiency of the process and the safety of the personnel involved. In this research, the recovery of lead from a Colombian mineral with low metal content was studied by hydrometallurgical processes in carboxylic media under ambient conditions. A preliminary chemical treatment was necessary to improve the metal extraction. For this purpose, two hydrometallurgical treatments were used: i) pneumatic agitation with ozone injection and ii) mechanical agitation with hydrogen peroxide dosing. The lead extractions from the pretreated ore were similar to those from the leach without pretreatment. This situation attributed the dissolution of the lead to the complexing effect of the carboxylic agent rather than to the effect of the pretreatments. The direct addition of peroxide to the citrate leach resulted in an extraction of 50% of the metal, an improvement of more than 30% over the leach without the addition of the oxidizing agent. The leaching of the ore with 0.5M citrate and pH 4.5 yielded a redox potential of 926 mV, which ensured the high activity of the electrons in the chemical reaction and therefore the lead ions dissolution.
Multimorbidity in the working-age population of Serbia: Results from the 2019 National Health Survey
Authors: Radic Ivana , Harhaji Sanja , Dragnic Natasa , Mijatovic-Jovanovic Vesna , Cankovic Sonja , Cankovic Dusan
Published: May 2024

Background/Aim. Population aging and the increase in the prevalence of chronic diseases led to a rise in the number of people who live with more than one disease. The aim of the study was to determine the prevalence and predictors of multimorbidity in the working-age population (WAP) of Serbia. Methods. The study is part of ?The 2019 Serbian National Health Survey?, a c ross-sectional study conducted on a representative stratified two-stage sample. For this paper, a representative data sample for 9,473 persons of the WAP (aged 15?64 years) was used. Multimorbidity was defined as the co-occurrence of two or more of 13 chronic conditions. Data on chronic conditions were self-reported, and data on body mass and body height were measured. Multivariable logistic regression was used to assess predictors of multimorbidity. Results. Multimorbidity prevalence among WAP was 12.0%, and it was significantly higher among women (13.3%) than in men (10.6%). The predictors of multimorbidity were: female gender, increasing age, lower level of education, lower income, unemployment, retirement, widowhood, and divorce. Being overweight and obese were associated with higher odds of multimorbidity in both men and women. Conclusion. Multimorbidity is an important public health problem amongst WAP in Serbia due to its high prevalence, especially among vulnerable groups, and its inequality in frequency among different socioeconomic groups.
Epoxygenase Cyp2c44 regulates hepatic lipid metabolism and insulin signaling by controlling FATP2 localization and activation of the DAG/PKCδ axis
Authors: Ghoshal Kakali , M. Luther James , B. Pakala Suman , Chetyrkin Sergei , R. Falck John , Zent Roy , H. Wasserman David , Pozzi Ambra
Published: May 2024

Cytochrome P450 epoxygenase Cyp2c44, a murine epoxyeicosatrienoic acid (EET) producing enzyme, promotes insulin sensitivity and Cyp2c44(-/-) mice show hepatic insulin resistance. Because insulin resistance leads to hepatic lipid accumulation and hyperlipidemia, we hypothesized that Cyp2c44 regulates hepatic lipid metabolism. Standard chow diet (SD) fed male Cyp2c44(-/-) mice had significantly decreased EET levels and increased hepatic and plasma lipid levels compared to wild-type mice. We showed increased hepatic plasma membrane localization of the FA transporter 2 (FATP2) and total unsaturated fatty acids and diacylglycerol levels. Cyp2c44(-/-) mice had impaired glucose tolerance and increased hepatic plasma membrane-associated PKCδ and phosphorylated IRS-1, two negative regulators of insulin signaling. Surprisingly, SD and high fat diet fed (HFD) Cyp2c44(-/-) mice had similar glucose tolerance and hepatic plasma membrane PKCδ levels, suggesting that SD-fed Cyp2c44(-/-) mice have reached their maximal glucose intolerance. Inhibition of PKCδ resulted in decreased IRS-1 serine phosphorylation and improved insulin-mediated signaling in Cyp2c44(-/-) hepatocytes. Finally, Cyp2c44(-/-) HFD-fed mice treated with the analog EET-A showed decreased hepatic plasma membrane FATP2 and PCKDd levels with improved glucose tolerance and insulin signaling. In conclusion, loss of Cyp2c44 with concomitant decreased EET levels leads to increased hepatic FATP2 plasma membrane localization, diacylglycerol accumulation, and PKCδ-mediated attenuation of insulin signaling. Thus, Cyp2c44 acts as a regulator of lipid metabolism by linking it to insulin signaling.
Airborne Infection Defence Platform
Authors: Aditama Tjandra Yoga
Published: May 2024

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