bluuebunny/crossref_metadata_2025 huggingface dataset:
High-latitude marginal reefs support fewer but bigger corals than their tropical counterparts
Authors: Chong Fiona , Sommer Brigitte , Stant Georgia , Verano Nina , Cant James , Lachs Liam , Johnson Magnus , Parsons Daniel , Pandolfi John M. , Salguero-Gómez Roberto , Spencer Matthew , Beger Maria
Published: March 2023

Anthropogenic impacts are typically detrimental to tropical coral reefs,
but the effect of increasing environmental stress and variability on the
size structure of coral communities remains poorly understood. This
limits our ability to effectively conserve coral reef ecosystems because
size specific dynamics are rarely incorporated. Our aim is to quantify
variation in the size structure of coral populations across 20 sites
along a tropical-to-subtropical environmental gradient on the east coast
of Australia (~23°S to 30°S), to determine how size
structure changes with a gradient of sea surface temperature, turbidity,
productivity and light levels. We use two approaches: 1) linear
regression with summary statistics (such as median size) as response
variables, a method frequently favoured by ecologists; and 2)
compositional functional regression, a novel method using entire
size-frequency distributions as response variables. We then predict
coral population size structure with increasing environmental stress and
variability. Together, we find fewer but larger coral colonies in
marginal reefs than in tropical reefs, where environmental conditions
are more variable and stressful for tropical corals. Our model predicts
that coral populations may become gradually dominated by larger colonies
(> 148 cm2) with increasing environmental stress. Fewer but
bigger corals suggest low survival of smaller corals, slow growth, and /
or poor recruitment. This finding is concerning for the future of coral
reefs as it implies populations may have low recovery potential from
disturbances. We highlight the importance of continuously monitoring
changes to population structure over biogeographic scales.
LTA-OM: Long-Term Association LiDAR-IMU Odometry and Mapping
Authors: zou zuhao , Yuan Chongjian , Xu Wei , Li Haotian , Li Liang , Zhang Fu
Published: March 2023

Simultaneous localization and mapping (SLAM) technology is ubiquitously
employed in ground robots, unmanned aerial vehicles, and autonomous
cars. This paper presents LTA-OM: an efficient, robust, and accurate
LiDAR SLAM system. Employing FAST-LIO2 and Stable Triangle Descriptor as
LiDAR-IMU odometry and the loop detection method, respectively, LTA-OM
is implemented to be functionally complete, including loop detection and
correction, false positive loop closure rejection, long-term association
mapping, and multi-session localization and mapping. One novelty of this
paper is the real-time long-term association (LTA) mapping, which
exploits the direct scan-to-map registration of FAST-LIO2 and employs
the corrected history map to constrain the mapping process globally. LTA
leads to more globally consistent map construction and drift-less
odometry at revisit places. We exhaustively benchmark LTA-OM and other
state-of-the-art LiDAR systems with 18 data sequences. The results show
that LTA-OM steadily outperforms other systems regarding trajectory
accuracy, map consistency, and time consumption. The robustness of
LTA-OM is validated in a challenging scene - a multi-level building
having similar structures at different levels. Besides, a multi-session
mode is designed to allow the user to store current session’s results,
including the corrected map points, optimized odometry, and descriptor
database for future sessions. The benefits of this mode are additional
accuracy improvement and consistent map stitching, which is helpful for
life-long mapping. Furthermore, LTA-OM has valuable features for robot
control and path planning, including high-frequency and real-time
odometry, drift-less odometry at revisit places, and fast loop closing
convergence. Moreover, LTA-OM is versatile as it is applicable to both
multi-line spinning and solid-state LiDARs, mobile robots and handheld
platforms.
Geographic isolation and habitat differences as drivers of genetic differentiation in the Mediterranean and the Middle East Asia Minor 1 Bemisia tabaci (Gennadius) populations of Xinjiang, China
Authors: Fu Kaiyun , Jia Zunzun , Tan Yixi , Wang Xiaowu , Rouzi AERZIGULI , Jiang Weihua , Ahmat Tursun , Ding Xinhua , Guo Wenchao , Feng Hongzu
Published: March 2023

Invasive alien species are generally highly fertile and adaptable and
can pose a severe threat to the ecological security of invaded
localities. Bemisia tabaci (Gennadius) is a rapidly evolving cryptic
complex. Among them, Mediterranean (MED) and Middle East–Asia Minor 1
(MEAM1) is the most invasive and widely distributed. To clarify the
invasion source, population structure, and genetic differentiation
drivers of whitefly populations in Xinjiang, China, we collected B.
tabaci from 14 host crops in Xinjiang, China. A total of 453 sequenced
cytochrome c oxidase subunit I(COI) fragments were analysed. We used
common methods and parameters of genetic analysis, such as phylogenetic
analysis, haplotype diversity, and nucleotide diversity, neutrality
testing, and mismatch distribution chart analysis to determine the
genetic structure and genetic differentiation and explore the origin of
the invasion of B. tabaci populations in Xinjiang. The results have
shown that global MED and MEAM1 populations are genetically
differentiated, and MED has a significant geographical lineage structure
at the Xinjiang and global spatial scales. This was the same for the
MEAM1 population at the Xinjiang spatial scale. There have been multiple
local expansions and founder effects in the MED populations. The MEAM1
population has retained a stable population size with a bottleneck
effect. Based on the phylogenetic tree for MED and MEAM1, it has been
demonstrated that there have been multiple points and pathways of
invasion of B. tabaci and the sources in Xinjiang, China were complex.
The sources of MED invasion of MED are likely to be Zhejiang, Hebei, or
Shanxi. The source for MEAM1 is complex, and Zhejiang is one of the main
invasion sources. This study has shown that host plant differences in
open habitats, geographic isolation, and habitat differences were the
driving factors for genetic differentiation of B. tabaci populations in
Xinjiang, China
Quantifying supraglacial debris-related melt-altering effects on the Djankuat Glacier, Russian Federation, Part 2: Using a modelling approach to derive the glacier-specific Østrem curve
Authors: Verhaegen Yoni , Rybak Oleg , Popovnin Victor , Huybrechts Philippe
Published: March 2023

We used a spatially distributed and physically based energy and mass
balance model to derive the Østrem curve, that is the supraglacial
debris-related relative melt alteration versus the debris thickness, for
the Djankuat Glacier, Caucasus, Russian Federation. The model is driven
by meteorological input data from two on-glacier automatic weather
stations and ERA-5 reanalysis data. A direct pixel-by-pixel comparison
of the melt rates obtained from both a clean ice and debris-covered ice
mass balance model results in the quantification of debris-related
relative melt-modification ratios, capturing the degree of melt
enhancement or suppression as a function of the debris thickness. In
doing so, our model is the first attempt to derive the glacier-specific
Østrem curve through spatially distributed energy and mass balance
modelling. The main results show that a maximum relative melt
enhancement occurs on the Djankuat Glacier for thin and patchy debris
with a thickness of 3 cm. However, insulating effects suppress
sub-debris melt under debris layers thicker than a critical debris
thickness of 9 cm. Sensitivity experiments show that especially
within-debris properties, such as the thermal conductivity, the vertical
porosity gradient and the moisture content of the debris pack, highly
impact the magnitude of the sub-debris melt rates. The Østrem curve is
also shaped by the local climate. Our results highlight the need to
account for site-specific debris properties and their variation with
depth, as well as for the effects of changing local climatic conditions
in order to accurately assess (partly) debris-covered glacier behavior
and its climate change response.
On Dirac systems with multi-eigenparameter-dependent transmission conditions
Authors: Tharwat M.M.
Published: March 2023

In this work, we investigate a Dirac system which has discontinuities at
finite interior points and contains eigenparameter in both boundary and
transmission conditions. By defining a suitable Hilbert space H associated
with the problem, we generate a self-adjoint operator T such that the
eigenvalues of the considered problem coincide with those of T. We construct
the fundamental system of solutions of the problem and get the asymptotic
formulas for the fundamental solutions, eigenvalues and
eigen-vectorfunctions. Also, we examine the asymptotic behaviour for the
norm of eigenvectors corresponding to the operator T. We construct Green?s
matrix, and derive the resolvent of the operator T in terms of Green?s
matrix. Finally, we estimate the norm of resolvent of the operator T. In the
special case, when our problem has no eigenparameter in both boundary and
transmission conditions, the obtained results coincide with the
corresponding results in Tharwat (Boundary Value Problems,
DOI:10.1186/s13661-015-0515-1, 2016).
On Lyapunov-type inequalities for nonlinear Hamiltonian-type problems
Authors: Aktaş Mustafa
Published: March 2023

In this paper, we investigate new Lyapunov-type inequalities for
Hamiltonian-type problem {w? = ?(x)w + |y| p?2
y /(1 + |y| p) p?1/p y? = ?? (x) |w|??2 w /(1+|w|?)??1/? ? ?(x)
y involving the p-prescribed curvature operator ?p (v) = |v|p?2 v /(1 + |v|p) p?1/p, p > 1, under Dirichlet boundary condition.
A note on scaling properties of Hewitt Stromberg measure
Authors: Attia Najmeddine , Guizani Omrane
Published: March 2023

In this note, we investigate those Hewitt Stromberg measures which obey to a
simple scaling law. Consider a dimension function h and let Hh be the
corresponding Hewitt Stromberg measure. We say that Hh obeys an order ?
scaling law whenever taking A ? Rm and c > 0, one has Hh(cA) = c?Hh(A).
A novel PGA/TiO2 nanocomposite prepared with poly(γ-glutamic acid) from the newly isolated Bacillus subtilis 17B strain
Authors: Sokarda-Slavic Marinela , Ralic Vanja , Nastasijevic Branislav , Matijevic Milica , Vujcic Zoran , Margetic Aleksandra
Published: March 2023

Poly(?-glutamic acid) (PGA), naturally produced by Bacillus species, is a biodegradable, non-toxic, biocompatible and non-immunogenic negatively charged polymer. Due to its properties, it has found various applications in the food, cosmetic and pharmaceutical industries. In this work, Bacillus subtilis 17B was selected as the best PGA producer among fifty wild-types Bacillus strains tested and characterized as a glutamate-independent producer. The production of PGA by the newly identified strain was optimized and increased tenfold using the Box?Behnken experimental design. The purity of PGA after recovery and purification from the fermentation broth was confirmed by SDS- -PAGE followed by methylene blue staining. PGA was characterized by ESI MS and used for the preparation of a new nanocomposite with TiO2. The synthesis of PGA/TiO2 nanocomposite, its structural analysis, and cytotoxic effect on the cervical cancer cell line (HeLa cell) was investigated to determine the potential anti-cancer usage of this newly prepared material. It is encouraging that PGA/TiO2 nanocomposite showed an increased cytotoxic effect compared to TiO2 alone.
From Phocis to Aetolia: Ethnicity and Federalism in Greek Antiquity
Authors:   , Hosoy-Ciaccia Thomas A.
Published: March 2023

This thesis examines the interrelations between ethnicity and federalism in ancient Greece, focusing on levels of identity. Ethnicity will be investigated as a multi-layered process, particularly underlining regional, sub-regional, and polis-ethnic groups. An ethnosymbolic approach is applied, focusing on myths, festivals, memories, and symbols and their links to ethnicity and federalism in ancient Greece. Four regions make up the chapters of this thesis: 1.Phocis sets up the project, highlighting the significance of sub-regional groups in this region to the end of the Third Sacred War (to 346 BCE).2.Boeotia continues the study as the best documented federal state in Greek antiquity; like the Phocian chapter, it covers the Archaic period to the Third Sacred War.3.Arcadia provides an example of a group with a regional identity that was only federalised briefly in the fourth century. This region is an example of one with strong sub-regional and polis-ethnic groups. Arcadia is examined from the Archaic period to the Battle of Mantinea (362 BCE).4.Aetolia concludes the study as a region that developed from a confederate system in the fifth century to a federal state based on the region’s identity. In the Hellenistic period, the Aetolian federal state expanded beyond its traditional ethnic territory. The period covered in this chapter reaches from the Classical period to the end of the Social War (217 BCE).These chapters investigate the historical development of ethnicity and federalism in these regions using a narrative approach. Various theoretical approaches that have been used to analyse these concepts in the modern world will be applied to Greek antiquity, including McKay’s ethnic matrix, ‘history use’, and ethnofederalism. This thesis combined approaches allow scholars to read between the lines of the ancient evidence and establish an innovative approach to ethnicity and federalism in Greek antiquity.
Organisational crisis communication in Botswana: Investigating the crisis response strategies and the role of social media
Authors:   , Simon Chedza
Published: March 2023

Post-millennial crises in the digital age have become more challenging and difficult for unprepared organisations and public relations (PR) practitioners to manage. As such, organisations in Botswana, including global conglomerates with operations in Sub-Saharan Africa, have not been spared from these emergencies. With social media such as Facebook, Instagram, Twitter, Youtube and Pinterest, to mention a few, spreading crisis information at lightning speed, organisational crises can become global and multicultural in nature, further threatening the organisation’s reputation. To manage such complex exigencies, PR practitioners must understand the factors influencing the types of their crisis messages and how to use Facebook to persuade their audience. Currently, the lack of crisis communication research in Botswana to guide practitioners on appropriate response strategies and how language is used on Facebook to persuade audiences has attracted academic interest. Botswana’s crisis communication ecosystem is still new and there is need for adjustments for PR practitioners to scale up to international standards. As such, this study investigates crisis communication in Botswana using the case studies of the Botswana Development Corporation (BDC) Fengyue Glass Manufacturing Project crisis of 2011, and the Botswana Railways (BR) passenger train derailment crisis of 2019. This research conducted a detailed content analysis of Facebook posts and identified themes and categories of how these organisations and their audiences communicated during these emergencies. To complement this quantitative data, selected Facebook posts were subjected to critical discourse analysis to establish how PR practitioners used language to dominate and persuade their audiences. Further explanations on how and why practitioners respond the way they do on Facebook were developed from semi-structured interviews with senior PR practitioners in Botswana. The study finds that crisis communication in Botswana is distinctive due to cultural factors. This thesis has developed a crisis information flow and relationship model (the Cross Cloverleaf Relationship Matrix) between Facebook and Botswana’s cultural offline communication platform, the kgotla system. The model helps to facilitate Facebook in a non-western setting where it is culturally resisted for its liberalism and promotion of Western values. Additionally, this thesis confirms Coombs (2006)’s cluster of crisis response strategies as valid and robust for non-western contexts, provided the corrective strategy is introduced as a cluster to accompany them.
Fault Diagnosis for Momentum Wheels of Communication Satellite Based on Artificial Neural Network
Authors: Ogbonnaya Ajah C. , Eronu Emmanuel , Shaibu Farouq E. , Amalu Ikechukwu N. , Najashi Bara’u G.
Published: March 2023

With the advent of several fault detection techniques in modern control systems design, this paper adopted the Artificial Neural Network (ANN) Fault Detection scheme for the Fault Detection of the Attitude Control System for a Communication Satellite. In satellite applications, telemetry data can be very large, and ANN is best suited for network modeling involving large sets of data. The availability of real satellite data from Nigcomsat-1R communication satellite provided a practical platform to assess the fault detection algorithm. Results obtained showed a good correlation between raw satellite telemetry data and Neural Network model-generated results for subsequent fault detection. The fault detection models were able to detect faults, log them and provide a notification to enhance subsequent isolation and rectification. Momentum Wheel Speed and Torque were used to investigate the performance of the wheels while the Momentum Wheel Voltage and Current helped to monitor the wheel’s health state. A fault is detected if the absolute difference between original output (MW Torque) and the NN Torque output is greater than 0.012. With this, an accuracy of 100% and mean squared error of 9.8489e-6 were achieved.
Is Efficiency of Indian Cement Firms Linked with PAT? A DEA-Tobit Analysis of Select Firms
Authors: Oak Hena
Published: March 2023

Promoting energy efficiency through policy mechanism will help to reduce India’s dependence on fossil fuels and lead to energy saving. This cannot happen without industry participation. The Perform-Achieve-Trade (PAT) scheme started in 2012 is such a policy measure, that is specifically designed for the high energy consuming industries of India. Select plants from these industries are selected for every PAT Cycle for implementation of the scheme. Currently PAT is in its sixth phase. One of the industries under its purview is the cement industry. But the cement firms that were included under PAT-I and II were dropped from PAT-III and IV. Using a sample of 27 such firms for the period 2007-2021, the paper estimates efficiency scores using input-oriented BCC model to analyze if the scores were improving for the firms after they were excluded from the PAT Cycles. Results show that on an average, efficiency scores were higher when the firms were a part of PAT-I and II, and it declined thereafter. The top 10 cement producers recorded higher efficiency scores than the other firms. Tobit regression results show that royalty and degree of capitalization help to increase efficiency scores, while with age the scores decline for all firms.
Expansão unilateral da maxila com a utilização de aparelho expansor apoiado em mini-implantes (MARPE)
Authors: Homem Neto Edson , Poletto Daniel , Lopes Carla Rodrigues
Published: March 2023

A Expansão Rápida da Maxila (ERM) vem sendo uma alternativa eficaz para correção das deformidades faciais com uso de aparelhos disjuntores. Na literatura atual são muitos os artigos relacionados à expansão maxilar apoiada em miniparafusos (MARPE) e a utilização desse sistema ajudando muito nas correções transversais superiores, principalmente, em indivíduos adultos sem a necessidade de cirurgias assistidas. Com a evolução da técnica, alguns autores sugeriram as corticoperfurações sobre a rafe palatina no intuito de fragilizar essa estrutura, favorecendo uma separação das hemimaxilas. Ainda mais recente foi complementada com perfurações também na região de crista infrazigomática, facilitando ainda mais o ganho transversal e em alguns casos, corrigindo a assimetria facial com uma expansão unilateral. Quando realizadas as perfurações unilaterais em uma das cristas infrazigomáticas, pode se observar o deslocamento lateral da maxila em maior quantidade no lado em que a crista foi fragilizada. A comprovação em radiografias e tomografias desse maior ganho unilateral abre um novo horizonte para as correções assimétricas da face. O objetivo deste trabalho é comprovar esse tipo de correção e o maior deslocamento unilateral da maxila após a utilização desse sistema.
Efeitos das condições ambientais na força inicial liberada por elásticos de látex
Authors: Veiga Paula Braga de Queiroz , Matta Edgard Norões Rodrigues
Published: March 2023

Este trabalho avaliou a influência das condições ambientais na força inicial liberada pelos elásticos ortodônticos de látex. Foram testadas 300 amostras de elásticos de látex força mé- dia, tamanho 5/16” da marca Morelli®. Os elásticos foram distribuídos em 2 grupos: Grupo A: mantidos na embalagem original, Grupo B: expostos ao meio ambiente. Os elásticos foram mantidos em um “jig” de acrílico de 07 cm x 07 cm que foi fixado em uma base de madeira de 55 cm x 15 cm. Os elásticos foram ativados em 50% de seus comprimentos iniciais e as forças iniciais liberadas foram mensuradas através de um dinamômetro digital de precisão. Foram utilizados os testes de Kolmogorov-Smirnov e t de Student com 5% de significância para ambos os testes. Os resultados evidenciaram não existir diferença significativa entre a força inicial média liberada de 71,60 g e 71,05 g entre os grupos A e B, respectivamente. Pode-se concluir que no presente trabalho os elásticos testados não sofreram influência ambiental em relação à força inicial liberada.
Como controlar a abertura da mordida posterior durante o tratamento com alinhadores?
Authors: Oltramari Paula Vanessa Pedron , Bespalez Neto Roberto
Published: March 2023

Dentre as dificuldades observadas durante o tratamento com os alinhadores ortodônticos, destaca-se a abertura da mordida posterior. Esta intercorrência pode ser causada pela intrusão não programada de dentes posteriores superiores e/ou inferiores, principalmente molares, e ocorre de forma mais frequente em pacientes braquifaciais. O objetivo deste trabalho foi apresentar um caso clínico tratado com alinhadores ortodônticos em que se observou a intrusão não planejada de molares, com necessidade de correção em fase de tratamento ativo. Como recursos para fechamento da mordida posterior, utilizaram-se levantes de mordida nos incisivos superiores, correção do torque dos molares superiores e inserção de attachments de extrusão nos dentes posteriores. Houve correção completa após 2 sequências de refinamento com alinhadores adicionais. Recomenda-se atenção aos pacientes braquifaciais e à expansão dentária com inclinação vestibular excessiva dos dentes posteriores. A inserção de levantes de mordida e controle de torque nos dentes posteriores podem minimizar os efeitos negativos da técnica.
Legitimação da ciência x Negacionismo governamental: estudo de caso de uma realidade brasileira no contexto pandêmico
Authors: Farnese Pedro
Published: March 2023

A proposta deste artigo consiste em um estudo de caso para descrever as estratégias de comunicação implementadas pela Universidade Federal de São Paulo (Unifesp), uma instituição pública brasileira localizada no maior estado do país, no Facebook durante os três primeiros meses da pandemia do novo coronavírus, de março a maio de 2020. Buscou-se compreender como o fenômeno da desinformação científica se relaciona com um momento de crise epistémica em que a circularidade de informações, potencializada pelo avanço tecnológico e social de plataformas midiáticas, favorece o maior alcance de boatos, teorias conspiratórias e negacionistas que impactam, sobretudo, a ciência. Foi possível perceber a utilização de diversos aparatos midiáticos, permitindo democratizar o conhecimento científico para um público amplo, incorporando preocupações sociais, políticas, econômicas e corporativas que ultrapassam os limites da ciência pura.
Income Inequalities and Fiscal Policies. Evidence from EU Member States
Authors:   ", ONOFREI Mihaela ,   Professor, Department of Finance, Money and Public Administration, Faculty of Economics and Business Administration, Alexandru Ioan Cuza University, Iași, Romania ", VINTILĂ Georgeta ,   "Professor, Department of Finance, Faculty of Finance, Insurance, Banking and Stock Exchange, The Bucharest University of Economic Studies, Bucharest, Romania", CHIRICU Cosmina-Ștefania ,   "Ph.D., Researcher in Finance, Doctoral School of Finance, The Bucharest University of Economic Studies, Bucharest, Romania", OPREA Florin ,   "Professor, Department of Finance, Money and Public Administration, Faculty of Economics and Business Administration, Alexandru Ioan Cuza University, Iași, Romania"
Published: March 2023

The main aim of our empirical analysis is to quantify the social impact of fiscal policies on income redistribution throughout the EU Member States on a database of fiscal, social and economic factors. Our research is conducted by using the Gini coefficient as the indicator of income redistribution, as well as the dependent variable, and the following influencing variables: taxes, index of perception of corruption, tax burden, education level, human development index, private property protection, unemployment rate, GDP per capita, private and public expenditure. Hence, by employing both the ‘Least squares’ method and the ‘Generalized Method of Moments’ we have identified significant results which highlight important social and economic development discrepancies throughout the EU Member States, as well as different fiscal policies and legislative frameworks. Moreover, by testing the robustness of the variables, we have identified that taxes exert more negative effects according to the degree of their regressivity. Our results offer strong empirical evidence supporting the idea that beyond designing more balanced fiscal systems (by the use or weight of direct/indirect taxes), public authorities should target the reduction of income inequalities using other instruments and reforms beside the fiscal ones (education, rule of law, legislative systems quality).
"How Did Local Governments Recover Their Financial Condition? Lessons from Citizen Participation"
Authors:   ", PARK Ji Hyung ,   Ph.D., Associate Professor, Department of Public Administration, Soongsil University, Seoul, South Korea"
Published: March 2023

This study offers lessons for overcoming future economic crises by examining whether democratic management helped local governments recover their financial condition. During the Great Recession, local governments were forced to make painful decisions regarding increased taxes and user charges, and cuts in public services. Several case studies provide evidence that citizen participation allows localities to increase property taxes as well as cut public services. However, broader, systematic empirical research is lacking. This study found that local governments with participatory budgeting were more likely to improve their financial condition during the Great Recession. The results allow us to identify the role of citizens in fiscal decision-making, offering lessons on how local governments can overcome possible fiscal crises in the future.
DETERMINATION OF ALLANTOIN LEVELS AS A RESULT OF OPTIMIZATION OF IONIC LIQUID-ULTRASOUND ASSISTED EXTRACTION OF COMFREY LEAVES BY TLC-DENSITOMETRY
Authors: Purnomo Andika , Mun'im Abdul , Hayun Hayun
Published: March 2023

Allantoin is a compound contained in comfrey leaves. This research aims to obtain optimal condition parameters of ionic liquid-ultrasound-assisted extraction (IL-UAE) comfrey leaves to attract allantoin compounds. Comfrey leaves are extracted with eight ionic liquids by ultrasound-assisted extraction (UAE) and screened for allantoin levels. The best ionic liquid from the screening results is optimized response surface methodology (RSM) with Box-Behnken design with three factors and three levels to determine the optimum extraction conditions for allantoin levels. Determination of levels is carried out with TLC densitometry. The results of the IL screening obtained [HMIM]Cl as the best  IL in the evaluation of optimization of extraction parameters. The results of optimization of extraction condition parameters [HMIM]Cl obtained the highest allantoin levels on the sixth run of 306.396 μg / g of powder at the ratio of solvents to powders of 10 mL / g, concentrations [HMIM] Cl 1 mol / L and extraction time of 30 minutes.
SYSTEMATIC MAPPING STUDY ON MANAGING VARIABILITY IN SOFTWARE PRODUCT LINE ENGINEERING
Authors: Ahmed Khudhair Abbas  , Fleh Saad Qassim , Safi Haydar Hassan
Published: March 2023

Revision for literature and searching for the sources of an information in the different database are considered to be the most important pillar of the scientific research, whether a researcher, academic in preparing the scientific documents or any research. That is the most important part which helps the researcher in understanding any subject or research, besides it helps him to know the different opinions regarding the subjects, thus, it provides the researcher with the suitable and correct information that helps him to take the right decision regarding his study and knowing the possible ways he needs to. This paper has been prepared, according to the tables and charts showing the progress of the workflow that was chosen in the name managing variability in software product line engineering .the systematic mapping study process, it has gone through several stages in the first of, the search process automatic and manual in various databases IEEE Xplore, ACM digital library and other search engine, conference, relevant journals, etc.). All of them process provide snowballing papers. It provides (1450) papers and other types (book, technical reports, litterateur, others). Second stage we did screening of papers according to (inclusion, exclusion) criteria. And the subsequent process were filtering process produced (77) final papers after three filters ,distribution of primary studies coordinating years, classifications charts in to ( facet1, facet2, facet3), representation finding by using bubble chart mapping between domain and different types of our subject (classes of research, managing variability SPLE type) . The concluding remarks were after indexing (77) papers its relationship out of (1450) papers. These papers (77) provide to answer question relevant managing variability in software product line engineering. [1]
Una mirada a la arquitectura moderna de Tunja: obra del Ingeniero Arquitecto Ernesto Muñoz Navarro
Authors: Pinilla Rodríguez Marcela Eunice , Toro Ospina Alexandra , Millares Caro Rocío Margarita , Melo Vera Diana Carolina , Alami Zambrano Ana María , Tovar Martínez Brayan Faruk , Daza Gómez Robinson
Published: March 2023

La investigación se enfocó en la arquitectura moderna en Tunja (Colombia) durante la segunda mitad del siglo XX, con atención en la obra del Ingeniero Arquitecto Ernesto Muñoz Navarro. Este arquitecto fue parte de la primera generación de estudiantes del programa de Ingeniería-Arquitectura de la Universidad Nacional de Colombia y utilizó los principios de la arquitectura moderna para contribuir a la modernización de Tunja en un momento crucial para el país. Además, desarrolló su propio estilo arquitectónico y empleó sistemas de construcción y estructurales innovadores para la época (Pinilla Rodríguez, y otros, 2022, pág. 11) . La investigación partió de la donación de los planos de algunas de las obras del Ingeniero Arquitecto Ernesto Muñoz Navarro, por parte de su esposa, a la Universidad de Boyacá. La Facultad de Arquitectura, Diseño y Urbanismo decidió aprovechar esta oportunidad para llevar a cabo una investigación y así dar a conocer la obra de este arquitecto. Debido a la escasez de investigaciones y estudios sobre la arquitectura moderna en Tunja, se consideró que esta era una oportunidad valiosa para contribuir al conocimiento en este campo. Esto coincidió con una preocupación por la falta de apreciación del significado de la arquitectura moderna en Tunja, y su importancia en el desarrollo histórico de la ciudad. A pesar de que el PEMP (Plan Especial de Manejo y Protección del Centro Histórico de Tunja) ha identificado el valor único de algunas edificaciones modernas al otorgarles un alto nivel de conservación, la población de Tunja considera patrimonio solamente la arquitectura de la época colonial (Pinilla Rodríguez, y otros, 2022, pág. 11) . El libro presenta cuatro edificios diseñados por él, describiéndolos y evaluando su valor patrimonial para identificar qué aspectos de la tipología y la morfología de la edificación deben ser conservados durante una intervención, a fin de mantener su valor arquitectónico. Además, se plantea la necesidad de reflexionar sobre la importancia de la arquitectura moderna y su urgente reconocimiento como patrimonio, ya que las dinámicas urbanas actuales desconocen su historia y significado, lo que está provocando su deterioro y destrucción.
Tópicos en cuidado cardiorrespiratorio
Authors: Roa Cubaque Marcela América , Rojas Laverde María del Pilar , Jiménez Echavarría María Camila , Arias Urrego Daniela Andrea , Mendoza Pinzón Blanca Ros Mary , Pineda Higuita Sonia Elena , Gómez Mejia Daniela , Chávez Sara Melissa , Montoya Gómez Claudia Janneth , Castrillón López Diana María , Albarracín Bernal Diana Carolina , Arenas Luna Lina Marcela , Duarte Rodríguez Vanessa , Zona Rodríguez Diana Carolina , Romero Sol Angie , Murgueitio Archbold Vianey , Rodríguez Rosa Paola , Naranjo Rojas Anisbed , Cruz Freiser , Romero Berfy , Rengifo Juan Manuel
Published: March 2023

La divulgación de resultados de investigación de los semilleros que agrupa la Asociación Colombiana de Facultades de Terapia Respiratoria ACOLFATER, se ha venido consolidando como una estrategia que permite la socialización y la incorporación de la cultura investigativa como parte esencial del desempeño del estudiante en su quehacer académico y como protagonista y responsable de su propio aprendizaje. Esta estrategia promueve la participación e interacción de profesores, estudiantes e investigadores, convirtiendo la presente publicación en un escenario óptimo para la reflexión, crítica, discusión, formación científica y construcción de conocimiento.
Retiro de una bomba mediante la colaboración de robots
Authors:   , Pérez Pérez Cristian
Published: March 2023

El contexto de nuestro problema es el siguiente: suponga que hay una bomba que se encuentra en una posición conocida y se requiere alejarla de dicha posición lo más posible, sin tomar en cuenta cuándo podría explotar. Para ello se cuenta con una cantidad fija de robots que tienen la capacidad de cargar la bomba, actúan uno a la vez, y disponen de una cantidad limitada de energía para desplazarse. Se considera un espacio de trabajo en dos dimensiones sobre la malla entera, donde cuesta una unidad de energía desplazarse entre vértices adyacentes. A este problema le llamamos "Retiro de la Bomba en la Malla (RBM)". Dadas las características del problema se sospecha que es NP-Duro, aunque hasta donde sabemos esto no se ha demostrado. El problema RBM se atacó con 5 técnicas diferentes: 1) modelo de programación entera y el software solucionador Gurobi; 2) una heurística ad hoc glotona; 3) una heurística ad hoc basada en grupos: 4) metaheurístico ascenso a la colina; y 5) metaheurístico recocido simulado. El desempeño de las técnicas se probó al evaluar un conjunto de instancias de distintos tamaños, las cuales diseñamos acorde a las características de RBM. ya que en la literatura no se encontró ninguna. El modelo de programación entera muestra un aumento excesivamente alto en los tiempos de ejecución conforme crece el tamaño de las instancias. Se resolvieron instancias de manera exacta de a lo más 14 robots (instancias de tamaño pequeño) en un tiempo límite de 8 horas. La heurística de grupos, ascenso a la colina y recocido simulado son técnicas donde se puede aplicar el método multiarranque, por lo que inicialmente se compararon con el mismo número de corridas. Los resultados obtenidos muestran que recocido simulado obtiene las mejores so- luciones (en las instancias pequeñas casi siempre llegó al valor óptimo), seguido por ascenso a la colina y las heurísticas glotona y de grupos, las cuales muestran soluciones similares, sin embargo, los tiempos de ejecución se mantienen el mismo orden, siendo el recocido simulado la técnica con los tiempos más altos (solo superados por los del modelo de programación entera) y la heurística glotona la técnica con los tiempos más bajos. Finalmente, se compara la heurística de grupos con el recocido simulado. Debido a que la heurística de grupos muestra una alta variación en sus respuestas y tiene tiempos de ejecución muy bajos, se realiza un número mayor de corridas para esta técnica. Los resultados muestran que al ejecutar la heurística de grupos cientos de veces, se puede obtener soluciones tan buenas o incluso mejores a las del recocido simulado, en tiempos de ejecución mucho menores.
Algoritmos metaheurísticos aplicados a una transformada fractal en imágenes
Authors:   , Avila Campos Stephanie Pamela , Alvarado Nava Óscar
Published: March 2023

Se describe una investigación sobre el uso de algoritmos metaheurísticos para generar imágenes fractales a partir de la aplicación de una transformada fractal. La codificación fractal de imágenes es una técnica de compresión con pérdidas en donde se representa una imagen digital como un conjunto de códigos fractales, con la ventaja de reducir el espacio que éstas ocupan. Se explican que los algoritmos metaheurísticos son técnicas de optimización que se basan en la exploración sistemática de soluciones y en la evaluación de su calidad, para encontrar la mejor solución posible en un espacio de búsqueda. Se aplican algoritmos metaheurísticos para generar imágenes fractales a partir de una transformada fractal. El uso de algoritmos metaheurísticos en la generación de imágenes fractales puede mejorar la calidad y complejidad de las mismas, en comparación con los métodos tradicionales de transformada fractal. Además, los algoritmos metaheurísticos pueden ser útiles para optimizar la exploración y la convergencia en la búsqueda de soluciones en un espacio de búsqueda complejo.
THE IMPACT OF DIGITALIZATION ON STARTUPS IN THE SOUTH-EAST REGION OF ROMANIA
Authors:   ”Dunărea de Jos” University of Galați, Romania, CRISTACHE Nicoleta , PRICOPOAIA Oana ,   ”Dunărea de Jos” University of Galați, Romania, BUȘILĂ Andreea Valentina ,   ”Dunărea de Jos” University of Galați, Romania
Published: March 2023

The crisis generated by the COVID-19 pandemic around the world, including in Romania, accelerated processes that had been started for a long time, but which were progressing slowly. The representatives of the business environment hope for an emphasis on the digitization of the fiscal administration, for a new perspective on business models. Romania's startups are lagging in adopting digital technologies, according to DESI 2020 report. The biggest gaps are in the digitalization of internal organizational processes. Businesses with the highest level of digitization and digitalization secure opportunities at twice the rate of the least digitized ones. We conducted a study to identify the implications of social platforms and digitization in the development of entrepreneurship among young people. The researched aspects were the motivations for using the Internet and social platforms, the impact of digitalization on collaborative platforms in Romania and the connection between the Romanian entrepreneurial ecosystem and digitalization.
Supervision and liability of insolvency practitioners in EU and national law
Authors: Conceição Ana Filipa , Frade Catarina , Benedetti Lorenzo , Maśnicka Monika , Hollemans Ruben , Jesus Ruben
Published: March 2023

Os administradores de insolvência são um ator-chave nos processos de restruturação e insolvência de empresas, equilibrando exigências de justiça com eficiência económica e tutela de interesses económicos individuais.
O seu desempenho influencia significativamente o resultado da liquidação de empresas insolventes e pode contribuir também para a restruturação empresarial. Enquanto servidor da justiça e promotor de interesses económicos maioritariamente privados, desenvolve uma ação que carece de uma adequada fiscalização que esteja ancorada num sistema de responsabilização eficaz.
Partindo do quadro legal europeu de referência propomo-nos analisar as soluções sufragadas por quatro ordens jurídicas de perfil variado — Holandesa, Italiana, Polaca e Portuguesa — a fim de analisar as semelhanças e divergências registadas na consagração de regras de supervisão e de responsabilização dos administradores de insolvência.
PENJADWALAN PROYEK PERUMAHAN X BINTARO DENGAN METODE LINE OF BALANCE YANG DISEMPURNAKAN
Authors: Timothy Andreas , Gondokusumo Onnyxiforus
Published: March 2023

In a project with repetitive activities, traditional scheduling methods like barchart are considered less effective to be used. So it would be better if using a special scheduling method . The commonly used method is line of balance and flowline. In its application, the two methods have several obstacles, both from a technical and visual perspective. Technically, the line of balance method will arrange workers with shifted time that is not effective. Visually, the flowline method cannot directly inform the duration of a project. This research will be using line of balance scheduling method and an enchanced line of balance scheduling method, which is improved both from a technical and visual perspective. Technically, the preparation is done using 3 steps; (1) Line of Balance (LOB) formulation, (2) interruption calculation, and (3) First-Come First Serve (FCFS. While visually, duration-distance chart (DD-Chart) is used to combine the advantages of the two existing methods, which is line of balance and flowline. This study uses housing project X in Bintaro to be the object of research with a total of 6 housing units. Based on the result of the research, the duration of the project with line of balance method is 353 days, and 336 days with enhanced repetitive scheduling method. The reduction of the project duration keeps using the same amount of man-days.
Keywords: LOB; scheduling; FCFS; DD-Chart;  repetitive scheduling
Abstrak
Pada suatu proyek dengan pekerjaan berulang (repetitive), penjadwalan dengan metode biasa seperti barchart tidak efektif untuk digunakan. Sehingga lebih baik digunakan suatu metode penjadwalan yang khusus. Metode yang digunakan biasanya adalah metode line of balance dan flowline. Pada penerapannya, kedua metode tersebut terdapat beberapa kendala baik dari segi teknis maupun visual. Dari segi teknis, metode line of balance akan menyusun pekerja dengan adanya waktu geser yang tidak efektif. Sedangkan dari segi visual, metode flowline tidak dapat secara langsung menginformasikan durasi dari suatu proyek. Pada penelitian ini, akan dikaji suatu metode penjadwalan dengan metode line of balance dan metode line of balance yang disempurnakan baik dari segi teknis dan visual. Secara teknis, penyusunan dilakukan dengan menggunakan 3 langkah; (1) Formulasi Line of Balance (LOB), (2) Perhitungan interupsi, dan (3) First-Come First-Serve (FCFS). Sedangkan secara visual,  digunakan grafik duration-distance chart (DD-Chart) untuk mengkombinasikan keunggulan dari dua metode yang sudah ada, yaitu line of balance dan flowline. Penelitian ini menggunakan proyek perumahan X di Bintaro untuk dijadikan obyek penelitian dengan jumlah unit sebanyak 6 unit rumah. Berdasarkan hasil penelitian, diperoleh durasi penjadwalan sebesar 353 hari dengan metode line of balance, serta 336 hari dengan metode line of balance yang disempurnakan. Pengurangan durasi tersebut tetap menggunakan jumlah orang-hari yang sama.
EFECTIVITY OF UNIT WALL FINISHING WITH STICK ON WALL METHOD IN CATTLEYA TOWER SAKURA GARDEN CITY APARTMENT PROJECT, EAST JAKARTA
Authors: Rafky Muhammad , Pratama Maryo Inri , Bali Ika , Bangkara B.M.A.S. Anaconda
Published: March 2023

In building construction, interior wall finishing work usually uses conventional methods, namely plastering and nat grout. At Cattleya Tower Sakura Garden City Apartment, East Jakarta, the unit wall finishing uses a more modern method: Stick on wall. The Stick on wall method uses alternative finishing materials other than plaster and nat grout as a hebel wall covering made of large boards covered with thick paper which must be glued with a glue-like material to the hebel walls. The use of this method in the apartment case aims to speed up the project construction process because 90% of the units in Cattleya Tower have been sold, so the completion of the project must be realized immediately. This study was conducted to evaluate the effectiveness in terms of cost and time of the Stick on wall finishing method compared to the plastering and nat grout method. By calculating using the SNI method and considering other aspects such as transportation from the supplier to the project site, it is known that wall finishing work using stick on wall is 0.74% cheaper than wall finishing work using plaster and nat grout. As for the comparison of work time, work using stick on wall is 74.58% faster than wall finishing work using plaster and nat grout with a difference in working time of 52 days.
Keywords: Stick on wall; wall finishing; plastering cost; nat grout
Abstrak
Dalam konstruksi bangunan, pekerjaan finishing dinding interior biasanya menggunakan metode konvensional yaitu plesteran dan nat grout. Di Cattleya Tower Sakura Garden City Apartment, Jakarta Timur, finishing dinding unit menggunakan metode yang lebih modern: Stick on wall. Metode Stick on wall menggunakan bahan finishing alternatif selain plaster dan nat grout sebagai penutup dinding hebel yang terbuat dari papan besar yang dilapisi kertas tebal yang harus direkatkan dengan bahan sejenis lem pada dinding hebel. Penggunaan metode ini pada kasus apartemen tersebut bertujuan untuk mempercepat proses konstruksi proyek karena di Cattleya Tower tersebut unit yang telah terjual sebesar 90%, sehingga penyelesaian proyek tersebut harus segera direalisasikan. Studi ini dilakukan untuk mengevaluasi efektivitas dari segi biaya dan waktu dari metode pekerjaan finishing dinding Stick on wall dibandingkan dengan metode plesteran dan nat grout. Dengan menghitung menggunakan metode SNI dan mempertimbangkan aspek lain seperti transportasi dari pemasok ke lokasi proyek, diketahui bahwa pekerjaan finishing dinding menggunakan stick on wall lebih murah 0,74% dibandingkan pekerjaan finishing dinding menggunakan plesteran dan nat grout. Sedangkan untuk perbandingan waktu pengerjaan, pekerjaan menggunakan stick on wall lebih cepat 74,58% dibandingkan pekerjaan finishing dinding menggunakan plesteran dan nat grout dengan selisih waktu kerja adalah 52 hari.
News in Brief
Authors: Editor
Published: March 2023

news in brief
Refugee Resettlement around the World
Authors: Editor
Published: March 2023

Refugee Resettlement around the World
Resource Exchange
Authors: Editor
Published: March 2023

Resource Exchange