bluuebunny/crossref_metadata_2025 huggingface dataset:
Tracking locally hatched pied flycatchers reveals masking of inherited trait variation during spring migration
Authors: Wang Xuelai , Bell Fraser , Ouwehand Janne , Bearhop S. , Burgess Malcolm , Nicolaus Marion , Both Christiaan
Published: December 2022

Climate change has been driving long-distance migratory birds to alter
their schedules under the threat of being mismatched with their food
peak at the breeding grounds. It is important to study the relative
contribution of environmental, genetic and ontogenetic components in
various spring timing traits in the wild in order to predict the true
potential for migratory birds to adapt to the changing environment. We
aimed to detect if heritable and ontogenetic components can explain
variation in the timing of spring migration and breeding in pied
flycatchers (Ficedula hypoleuca). Geolocator tracks of 44 locally
hatched birds deployed during 2016-2019 in the Netherlands and the
United Kingdom were used to investigate the role of early-life traits in
the pre-fledging phase, as well as parental timings, in contributing to
individual differences in the timing of spring migration and breeding in
adulthood. We found a positive relationship between an individuals’
birth date and spring departure date from Africa in adulthood, but not
for breeding arrival or laying date. Variation in spring departure date
could not be explained by any other early-life trait in the pre-fledging
phase, yet was well explained by the arrival dates of its parents in its
birth year. This suggests that under natural conditions, individual
differences in spring departure timing have a strong heritable component
(in the broad sense), but that environmental conditions experienced
along the migratory route and at breeding sites are partially masking
this expression in arrival and laying schedules in these early breeding
populations. Such environmental masking may reduce heritability in the
timing of arrival and laying, thereby slowing down climatic adaptation
towards earlier time schedules in pied flycatchers.
Assessing the performance of several numerical methods for estimating Weibull parameters for Wind Energy Applications: A case study of Al-Hodeidah in Yemen
Authors: Hassan Ali , Hasan Waleed , Shukri M
Published: December 2022

For the aim of determining the wind speed characteristics and wind power
density, the performance of five numerical approaches to identify the
shape (k) and scale (c) parameters of the Weibull distribution function
is assessed in this work. The chosen methods are the empirical Justus
method (EMJ), the maximum likelihood method (ML), the energy pattern
factor method (EPF), the moment method (MOM), and L-moment estimation
method (L-MOM). In order to calculate the mean wind speed, wind speed
standard deviation, and wind power density for Al-Hodeidah in West
Yemen, the best suitable method must be determined. Daily mean wind
speeds collected from January to December 2014 are used in this study.
The findings show that using various parameter estimating techniques
alters the precision of the values derived for mean wind speed, mean
wind power density and their standard deviation, skewness and kurtosis.
For this site, all of the methods: EMJ, EPF, ML, MOM, and L-MOM present
a very good accuracy for predicting mean wind speed on both daily and
monthly basis. For forecasting standard deviation of wind speed, the EMJ
method performs the best one on both daily and monthly scales. The ML
method is recommended for assessing the wind energy potential since it
presents better performance in terms of forecasting the daily and
monthly average power density at the study site. All methods showed a
notable error with relative percent error (RPE) larger than 10% at the
study site for the skewness and kurtosis of both wind speed and power
density except the EPM method is sufficient for predicting the kurtosis
of power with relative percent errors (RPE) smaller than 3%. For the
standard deviation of power density analyses, all of the methods show
remarkable errors with relative percent errors (RPE) greater than 11%.
Parental effects in a filamentous fungus: phenotype, fitness, and mechanism
Authors: Peña Mariana Villalba de la , Summanen Pauliina , Moghadam Neda , Kronholm Ilkka
Published: December 2022

Adaptation to changing environments often requires meaningful phenotypic
modifications to match the current conditions. However, obtaining
information about the surroundings during an organism’s own lifetime may
only permit accommodating relatively late developmental modifications.
Therefore, it may be advantageous to rely on inter-generational or
trans-generational cues that provide information about the environment
as early as possible to allow development along an optimal trajectory.
Transfer of information or resources across generations, known as
parental effects, is well documented in animals and plants but not in
other eukaryotes, such as fungi. Understanding parental effects and
their evolutionary consequences in fungi is of vital importance as they
perform crucial ecosystem functions. In this study, we investigated
whether parental effects are present in the filamentous fungus
Neurospora crassa, how long do they last, are the effects adaptive, and
what is their mechanism. We performed a fully factorial match / mismatch
experiment for a good and poor quality environment, in which we measured
mycelium size of strains that experienced either a matched or mismatched
environment in their previous generation. We found a strong silver spoon
effect in initial mycelium growth, which lasted for one generation, and
increased fitness during competition experiments. By using deletion
mutants that lacked key genes in epigenetic processes, we show that
epigenetic mechanisms are not involved in this effect. Instead, we show
that spore glycogen content, glucose availability and a radical
transcription shift in spores are the main mechanisms behind this
parental effect.
Spectral Fatigue Prediction with Strain-Based Reformulation to Handle Overloads and Localized Elastic-Plastic Deformation
Authors: Srinivasa |Arun R. , Jarecki Dominic , Iyyer Nagaraja , Thamburaja Prakash
Published: December 2022

Frequency-domain fatigue damage prediction based on spectral moments
provides a framework in which anticipated life calculated over an entire
structure subject to vibratory random loading (typically in the high
cycle fatigue regime) can be rapidly obtained. However, the basis of the
methods of spectral fatigue assume stationary, Gaussian, zero-mean,
narrow-band (single dominant frequency) input, without the presence of
overloads (stresses that exceed the initial yield stress), a significant
set of restrictions. Given the importance of overloads in determining
fatigue lifeI, we propose a novel “bilinear” formulation of spectral
fatigue equations, that separates damage due to small and large strain
amplitudes, is developed that matches or significantly outperforms
existing stress-based HCF approaches (including for multiaxial
elastoplastic loading) while avoiding non-conservative predictions
suffered by an existing strain-based implicit formulation when the power
spectral density include excursions into plastic loading due to the
presence of overloads. Comparisons with synthetic and experimental data
sets demonstrate the efficacy of the approach in a variety of different
loading conditions.
Retinopathy during the First 5 Years of Type 1 Diabetes and Subsequent Risk of Advanced Retinopathy
Authors: Malone John I. , Gao Xiaoyu , Raskin Philip , White Neil H. , Hainsworth Dean P. , Das Arup , Tamborlane William , Wallia Amisha , Aiello Lloyd P , Bebu Ionut
Published: December 2022

   

Objectives: To determine whether individuals with type 1 diabetes (T1D) who develop any retinopathy at any time prior to five years of diabetes duration have an increased subsequent risk for further progression of retinopathy or onset of proliferative diabetic retinopathy (PDR), clinically significant macular edema (CSME), diabetes-related retinal photocoagulation or anti-VEGF injections. Additionally, to determine the influence of HbA1c and other risk factors in these individuals.

Methods: Diabetic retinopathy (DR) was assessed longitudinally using standardized stereoscopic seven-field fundus photography at time intervals of six months to four years. Early onset DR (EDR) was defined as onset prior to 5 years of T1D duration. Cox models assessed the associations of EDR with subsequent risk of outcomes.

Results: In unadjusted models, individuals with EDR (n=484) had an increased subsequent risk of PDR (hazard ratio HR=1.51, 95%CI [1.12,2.02], P=0.006), CSME (HR=1.44, [1.10,1.88], P=0.008) and diabetes-related retinal photocoagulation (HR=1.48, [1.12,1.96], P=0.006) compared to individuals without EDR (n=369). These associations remained significant adjusted for HbA1c, but only the association with PDR remained significant after adjustment for age, duration of T1D, HbA1c, sex, systolic/diastolic blood pressure, pulse, use of ACE inhibitors, albumin excretion rate, and eGFR (HR=1.47, [1.04,2.06], P=0.028). 

Conclusions: These data suggest that individuals with any sign of retinopathy within the first 5 years of T1D onset may be at higher risk of long-term development of advanced DR, especially PDR. Identification of early onset DR may influence prognosis and help guide therapeutic management to reduce the risk of future visual loss in these individuals.

  
Diagnostic Accuracy of Image-guided Biopsies for Diagnosis of Metastatic Melanoma in a Real-life Setting
Authors: Serra-García Laura , Eliana-Radonich Jesica , Marti-Marti Ignasi , Vilana Ramon , Ripoll Enric , Sánchez Marcelo , Alós Llúcia , Carrera Cristina , Puig Susana , Malvehy Josep , Podlipnik Sebastian
Published: December 2022

Early detection of melanoma metastasis is essential in order to initiate treatment and improve patient prognosis. The aim of this study was to determine the diagnostic accuracy of different image-guided biopsy techniques in patients with melanoma. A cohort study of patients diagnosed with melanoma who had undergone image-guided biopsies (ultrasound-guided fine-needle aspiration cytology, ultrasound-guided core-needle biopsy, computerized tomography-­guided fine-needle aspiration cytology and computerized tomography-guided core-needle biopsy) to detect melanoma metastasis between 2004 and 2021 was conducted. The reference standard was histological confirmation and/or clinical-radiological follow-up. Sensitivity, specificity, positive and negative predictive values were calculated. A total of 600 image-­guided biopsies performed on 460 patients were included for analysis. Locoregional lesions represented 459 (76.5%) biopsies, and 141 (23.5%) were distant lesions. Of the included biopsies, 49 (8.2%) were insufficient for diagnosis. Overall, sensitivity and specificity were 92% (95% confidence interval 89–94) and 96% (95% confidence interval 91–99), respectively. Sensitivity sub-analyses revealed lower diagnostic accuracy values in the lung, inguinal lymph nodes, and computerized tomography-guided lesions under 1 cm. Limitations include spontaneous metastasis regression and arbitrary minimum follow-up period. Image-guided biopsies in patients with melanoma have high sensitivity and specificity for detection of regional or distant metastasis. Tissue type, location and tumour burden may influence the diagnostic accuracy of the test.
Faster IgG4 Depletion Kinetics Observed for Anti-Desmoglein 3 Autoantibodies Following Rituximab Treatment in Patients with Pemphigus Vulgaris
Authors: Boch Katharina , Langan Ewan A. , Van Beek Nina , Kridin Khalaf , Schmidt Enno , Zillikens Detlef , Ludwig Ralf J. , Hammers Christoph M. , Bieber Katja
Published: December 2022

Abstract is missing (Short communication)
Contribuições da diversidade geracional para a aprendizagem organizacional
Authors: Colet Daniela Siqueira , Mozzato Anelise Rebelato
Published: December 2022

Este artigo tem como objetivo principal propor um esquema conceitual analítico que facilite a compreensão das contribuições da diversidade geracional para a aprendizagem organizacional (AO), sob a abordagem baseada em prática na perspectiva sociológica. Realizou-se um estudo de caso múltiplo qualitativo, de natureza exploratória e descritiva. Com a aplicação do esquema conceitual analítico, os resultados revelam que, nas práticas cotidianas de trabalho ocorre a aprendizagem por meio das relações sociais e das interações. Numa relação processual, acontece a transferência, o compartilhamento, a criação e a reconstrução de conhecimento, resultando em aprendizagem intergeracional que contribui para com a AO.
Mulher no mercado de trabalho: ensino superior e construção de plano de carreira em João Pessoa
Authors: Cordeiro Neto Abdias Fernandes , Guimarães Ítalo , Oliveira Lindoval Luiz de
Published: December 2022

O presente estudo aborda as perspectivas e desafios enfrentados pelas mulheres na construção de seu plano de carreira. Assimilando quais tipos de preconceitos, opressões e vergonhas enfrentadas no dia a dia para conquistar seu desenvolvimento e atingir o ápice de sua carreira. O objetivo geral da pesquisa foi descrever como as universitárias realizam um plano de carreira. A base teórica da pesquisa sustenta-se em artigos, monografias, revistas e instituições que enfatizam sobre a temática. A coleta de dados realizou-se com a participação de 100 (cem) universitárias, na cidade de João Pessoa, onde 78% das participantes têm entre 18 a 27 anos, 71% afirmam que já testemunhou uma demissão após a gravidez. A metodologia parte de uma pesquisa descritiva de abordagem quantitativa, coletando dados no ambiente real. As instituições reguladoras atuam para que os valores das mulheres no mercado de trabalho continuem promovendo e aperfeiçoando as regras estabelecidas.
Análise do perfil dos desempregados: o caso do Residencial Mandacaru em Salgueiro (PE)
Authors: Silva Ricardo de Carvalho , Mendes Josiete da Silva , Cruz Tatyane Veras de Queiroz Ferreira da , Cavalcanti Hellen Taynan da Silva
Published: December 2022

O objetivo da pesquisa foi conhecer qual o perfil dos desempregados do Condomínio Mandacaru, localizado em Salgueiro (PE) e quais as estratégias utilizadas por estes para retomar ao mercado de trabalho. Metodologicamente é classificado como pesquisa de abordagem quantitativa, utilizando-se questionário para levantamento do perfil sócio demográfico e questões sobre a influência do desemprego na vida dos 80 pesquisadores. Também utilizou o instrumento GJSI (General Job-SearchIntensity), que tem como objetivo medir a intensidade de procura de emprego. Nas análises foi possível identificar que o baixo nível de escolaridade e a falta de preparação adequada conduzem a situação de desemprego.
Carreira profissional e o papel dos valores pessoais adquiridos na formação religiosa/sacerdotal
Authors: Begnini Sergio , Filippim Eliane Salete , Bencke Fernando Fantoni , Cenci Rosangela
Published: December 2022

Carreira profissional se estabelece com base em decisões pautadas pelos valores pessoais. Jovens que ingressaram na vida religiosa/sacerdotal e, posteriormente saíram, participaram de uma formação religiosa, pessoal e profissional. Busca-se compreender se os valores pessoais, consolidados no período de formação religiosa/sacerdotal, exerceram influência na carreira profissional de ex-religiosos/ex-sacerdotes. Estudo exploratório, baseado na história de vida, com entrevistas, e análise de conteúdo. Os resultados indicam que interação com distintas realidades auxiliaram no desenvolvimento pessoal/profissional. Conclui-se que a carreira profissional de ex-sacerdores/ex-religiosos foi influenciada por valores oriundos da formação religiosa/sacerdotal, importante para o crescimento educacional/pessoal e o desenvolvimento de competências.
Editorial - Exclusion Factors
Authors: Trevisan Leonardo Nelmi , Dutra Joel Souza , Veloso Elza Fátima Rosa
Published: December 2022

Individualized professional projections or organizational career plans recognize the existence of processes – operational or structural – that are discriminatory. Career evolution is often marked by situations of exclusion built by obstacles that inhibit ascent, both to decision-making nuclei, and to equal opportunities. And, both, in a very notorious way.
Exclusion scenarios are, in fact, differentiated. But, complementary. The first of these scenarios, the most significant, involves the gender factor. Discriminatory practices, especially in relation to women, but not only, do not appear only in relation to underrepresentation at the hierarchical level of the organization. Also, the areas of greatest perspective, such as the digitization of value chains, are largely male domains. This domain also appears in social networks for new work opportunities. Without forgetting, of course, the maternity issue. Other exclusion factors also deserved attention from academic research: the format of performance evaluations, including in the public sector, the profile of HR practices and policies, and even questions of values and the origin of training.
In this context, first recognizing the limits to understanding the complex world of discrimination scenarios and, taking into account the different possibilities for academic research to address the topic, the difficult reality involving exclusion factors in career development has been transformed in the thematic axis of the articles that make up the first issue of Volume 12 of Revista de Carreira e Pessoas.
People Analytics aplicado em uma empresa de transporte e logística
Authors: Godinho Amanda Aguilar , Kohler Alexia Vidigal , Salume Paula Karina
Published: December 2022

O presente estudo teve como objetivo aplicar o people analytics para analisar um conjunto de variáveis de um grupo específico de colaboradores, mais especificamente, motoristas de uma empresa de logística, a fim de identificar padrões e propor estratégias de melhoria relacionadas à gestão de pessoas. Aplicou-se a técnica de clusterização, da qual obteve-se a formação de dois grupos: o Sênior e o Júnior. A partir das características de cada um, tais como idade, tempo de casa e de habilitação, produtividade, quantidade de horas extras, absenteísmo, foi possível traçar sugestões específicas para cada um dos perfis.
Análise da motivação dos trabalhadores de um hospital de caridade
Authors: Wesz Fernanda Tamiosso , Patias Tiago Zardin , Piovesan Brescovit Larissa Roberta
Published: December 2022

Objetivou-se analisar a percepção dos trabalhadores de um Hospital de Caridade de município do noroeste do Rio Grande do Sul - Brasil em relação aos fatores motivacionais da escala Multidimensional Work Motivation Scale (MWMS). Através de uma pesquisa de campo, estabeleceu-se uma amostra de 63 entrevistados, articulada com a observação direta e a busca de documentos. Os dados foram analisados com técnicas da estatística descritiva. Os resultados obtidos pelas médias mostram que os funcionários consideram a Motivação Autônoma, que é representada pelos fatores Regulação Identificada e Motivação Intrínseca, onde estes profissionais identificam seus valores pessoais com o seu trabalho e motivam-se por situações intrínsecas à sua realidade.
Trajetória de carreira: uma análise de profissionais com pós-graduação stricto sensu no âmbito da indústria farmacêutica nacional
Authors: Cerqueira Marcos Rodrigues Facchini , Costa Débora Vargas Ferreira , Paradela Victor Cláudio , Kirchmair Débora Magalhães
Published: December 2022

O objetivo deste trabalho é avaliar a trajetória de carreira de profissionais com nível de formação pós-graduação stricto sensu e com vínculo empregatício na indústria farmacêutica. A pesquisa adotou uma orientação qualitativa, baseada na técnica de análise de conteúdo, sendo os dados obtidos via preenchimento de questionários eletrônicos. Como resultado, foi observada uma tendência de mudança na visão sobre profissionais com titulação nível de pós-graduação stricto sensu, valorizando e incentivando sua formação continuada. Constatou-se que a busca pela pós-graduação é motivada majoritariamente por uma decisão individual, e não de uma decisão conjunta entre discente, organização de ensino e iniciativa privada.
Intenção de rotatividade, motivação e identificação organizacional: estudo de organização militar
Authors: Rocha Neto João Mendes , Santana Paula Coutinho
Published: December 2022

Este estudo tem por objetivo verificar as relações preditivas entre motivação, identificação organizacional e intenção de rotatividade na carreira de militares. Para a realização do estudo foi considerada a abordagem quantitativa, com coleta de dados através de questionários. Já para a análise dos dados foram feitas análise fatorial, teste de correlação, regressão linear múltipla e Teste t. A amostra final foi composta por 388 militares da área finalística e de apoio de uma instituição das Forças Armadas. Os resultados mostraram que a motivação não mostrou relação significativa com a intenção de rotatividade, tendo sido apenas a identificação organizacional confirmada como variável preditora.
RESEARCH OF BIOLOGICALLY ACTIVE SUBSTANCES HERB AGRIMONIA EUPATORIA
Authors:   Lviv Polytechnic National University, Hubytska I.	I. , Bolibrukh L.D. ,   Lviv Polytechnic National University, Mylyanych A.O. ,   Lviv Polytechnic National University, Konechna R. T. ,   Lviv Polytechnic National University
Published: December 2022

The results of the study of the content of biologically active substances in the grass of the common steamer are presented. A study of the quality and determination of qualitative and quantitative content of biologically active substances in the grass of steamed common grass. The qualitative content of saponins, flavonoids, tannins, organic acids, vitamins was studied and the quantitative content of saponins and flavonoids was established. A study was conducted to study the antioxidant activity of water-ethanol extract of steamed grass.
Adaptations of Explainable Artificial Intelligence (XAI) to Agricultural Data Models with ELI5, PDPbox, and Skater using Diverse Agricultural Worker Data
Authors: Kawakura Shinji , Hirafuji Masayuki , Ninomiya Seishi , Shibasaki Ryosuke
Published: December 2022

We use explainable artificial intelligence (XAI) based on Explain Like I’m 5 (ELI5), Partial Dependency Plot box (PDPbox), and Skater to analyze diverse physical agricultural (agri-) worker datasets. We have developed various promising body-sensing systems to enhance agri-technical advancement, training and worker development, and security. This includes wearable sensing systems (WSSs) that can capture real-time three-axis acceleration and angular velocity data related to agri-worker motion by analyzing human dynamics and statistics in different agri-environments, such as fields, meadows, and gardens. After investigating the obtained time-series data using a novel program written in Python, we discuss our findings and recommendations with real agri-workers and managers. In this study, we use XAI and visualization to analyze diverse data of experienced and inexperienced agri-workers to develop an applied method for agri-directors to train agri-workers.
Photosynthetic Activity as a Productive Potential in Fragmented Forest Ecosystems
Authors: Saldaña Munive José Adrián , Pérez Ramírez Ana María , Rueda Luna Rolando , Nava Guevara Esmeralda
Published: December 2022

The inertia of fragmented ecosystems allows the study of mechanisms that transform these at plant level, the objective of this research was to develop the methodology to evaluate the photosynthetic activity and the capacity of different plant species that are part of the ecosystem, to recover their productivity. The study was carried out in Acajete Puebla, Mexico, delimiting conserved, transitional and agricultural areas. Tests were carried out with two chlorophyll extraction techniques, and at the same time the CO2 consumed by the plant was randomly measured. The technique with the highest recovery was maceration with 2.38 g of chlorophyll per gram of fresh material. On other hand, the productivity of the agricultural area is greater than the one in transition, which is attributed to the fact that agricultural area is more dynamic since most of the species are herbaceous and have a short life span, contributing to the rapid assimilation, storage and sequestration of carbon. This concludes that the herbaceous species Lachemilla procumbens (gross photosynthetic rate 0.19 ppm CO2/s) and Stevia subpubescens (0.16 ppm CO2/ s) are optimal to start the recovery of a degraded ecosystem.
Heat Transfer Enhancement in Heat Exchanger using Convex Delta Winglet Vortex Generators
Authors: Priyadi Muhammad Untung Zaenal , Syaiful  , Muchammad
Published: December 2022

Increased industrial development and demand for heat exchangers with efficient heat transfer are urgently needed. The efficiency of the heat exchanger can be achieved by increasing the rate of heat transfer. Increasing the rate of heat transfer can be performed by installing vortex generators on the surface. The longitudinal vortex generated by the vortex generators enhances heat transfer from the surface to the fluid. In this study, the heat transfer improvement was investigated experimentally in a rectangular channel. To achieve the aim of this study, six heated tubes with and without vortex generators with and without holes were installed in the channel. The number of pairs of VGs varied from one to three pairs with variations in flow velocity from 0.4 m/s to 2 m/s at intervals of 0.2 m/s. The effect of holes on the performance of Convex Delta Winglet Pairs (CxDWP) was evaluated with (j/j0)/(f/f0) as performance evaluation criteria (PEC). From the experimental results, it can be observed that the PEC of CxDWP three pairs with holes is 27% higher than that of CxDWP at Reynolds number 8,700.
Phytochemical Characteristics of Various Dimsum Fortified with Purslane Leaves
Authors: Mushollaeni Wahyu , Tantalu Lorine , Ghofur Muhammad Abdul
Published: December 2022

(One of the villages with abundant natural resources is Wonosalam Village in Jombang, East Java. One of the potentials is purslane (Portulaca oleracea) but underutilized yet and just known as a wild plant or weed. The availability of pursiane plants reaches 5-8 quintals/month from each population plot. However, this plant will be discarded because it interferes with the growth of economically valuable plants. Whereas according to research, purslane plants contain lots of phenolic bioactive compounds, flavonoids, carotenoids, and essential fatty acids that are useful as antioxidants and disease prevention. Therefore, this experiment aimed to obtain the best composition of various processed dimsum fortified using purslane leaves. This study used a randomized block design with various formulations of dimsum fortified using purslane leaves, namely purslane dumpling (SK), fantasy purslane dumpling (SKF), purslane drew-dumpling (DK) and purslane manti (KM) the results showed that pursiane dumplings were the best treatment, with physico-chemical parameters of protein, fat, water, ash, and carbohydrate content of 14.10%; 5.4%; 50.54%; 2.37%; and 21.8%. All kinds of dimsum fortified with purslane leaves contain unsaturated fatty acids from the medium-chain fatty acid (MCFAs) and polyunsaturated fatty acids (PUFAs) group.
Predominant Scattering Mechanisms in Quaternary AlInGaN/GaN Heterostructures
Authors: Tülek Remziye , Gökden Sibel , Teke Ali , Arslan Engin , Özbay Ekmel
Published: December 2022

Scattering mechanisms that limit the mobility of two-dimensional electron gas (2DEG) in AlInGaN/GaN heterojunctions with three different barrier layer thicknesses of 37.2 (sample A), 10.6 (sample B) and 4.30 (sample C) nm were studied. Hall measurements were performed between 12 and 350 K. Mobilities limited by scattering due to acoustic and optic phonons, dislocation, interface roughness, and alloy disorder were used in the calculation. It was found that scattering, predominantly due to interface roughness, determine the Hall mobility for all samples at different strengths. The highest electron mobility of 492 cm2V-1s-1 at room temperature is obtained for sample B with a high sheet density of about 4.43x1013 cm-2 and a corresponding sheet resistance of 287 Ω/.
An Entropic Spiral: From Pre-Columbian Art to the Post-Industrial Era
Authors: Amorós Hormazábal Raúl Armando
Published: December 2022

The aim of the research is to deepen Robert Smithson’s theoretical study in relation to the concept of an entropic landscape during the first years of Land Art and the consequential impact on today's contemporary art. This study explores and interrogates the reflections and successive considerations on landscape and entropy that the artist developed during the construction of Spiral Jetty, his most important work. The main topic is the critique and analysis of landscape through art. These experiences inaugurated a new and avant-garde approach: the aesthetics of the entropic, which leads to a form of socio-political debate that will be analyzed through artistic expression. The idea of an art that builds a new vision reflects the collective action toward reality, simultaneously expressing the landscape condition and the current entropic, instead of resolving it in the form of an object belonging to an armored dimension.
Pengelolaan Sampah Plastik Daerah Kepulauan di Siberut Selatan Mentawai
Authors: Sudiar Nofi Yendri , Asrizal Asrizal , Razi Pakhrur , Gautama Mohammad Isa
Published: December 2022

Day to day, the volume of plastic waste in Indonesia is increasing along with the increasing number of products and people's consumption patterns. According to data in 2021, the total national waste was 68.5 million tons. The main thing that must be done to overcome the case is to reduce the volume of plastic waste from its source through community empowerment about the importance of caring for environmental cleanliness. Problems regarding the management of plastic waste in the islands of South Siberut, among others, most (83.3%) of the community still do not separate organic and inorganic waste. Second, most (61.1%) of the community have not separated plastic waste. Furthermore, most people (83.3%) have never made compost from household waste. Finally, most (77.8%) of the people shopping at the market have not brought their own shopping bags. This community service activity is carried out through lecture presentation methods, discussions and workshops. This activity aims to increase public awareness about the dangers of plastic waste, and transform people's behavior to be able to manage the flow of plastic waste independently. From the results of the community service program that has been carried out, there has been an increase in public interest in the context of changing behavior in managing plastic waste.
Pendampingan Penulisan Karya Tulis Ilmiah Bagi Guru-Guru PAUD KKG Gugus Tulip Kabupaten Banjar
Authors: Suriansyah Ahmad , Wahdini Erny , Purwanti Ratna , Prastitasari Herti , Ausyra Amsika
Published: December 2022

The teacher can communicate ideas, ideas, results from research through scientific work. Teachers who are able to write scientific papers are the main thing in developing as professional teachers, but in fact there are still many teachers who have low knowledge about writing scientific papers, this is due to the lack of teacher creativity in developing the results of activities carried out in the classroom. The purpose of the service activities carried out is to provide knowledge and writing skills of PAUD teachers of the KKG Tulip Cluster, Banjar Regency regarding the writing of scientific papers. This method of service is through lectures, questions and answers and discussions of problem analysis, as well as pre-tests and post-tests. Mentoring activities are carried out online through zoom cloud meetings. The participants were 29 PAUD teachers of the Tulip Cluster, Banjar Regency. The results of the training showed that participants were able to write scientific papers properly and precisely, at the end of the activity participants produced scientific papers.
Peningkatan Prevensi Masalah Psikososial Pasca Bencana dengan Group Supportive Therapy dan Play Therapy
Authors: Ilda Zolla Amely , Renidyati Renidyati , Rachmadanur N. , Sunardi Sunardi , Astuti Verra Widhi , Widdefrita Widdefrita
Published: December 2022

West Sumatra is one of the disaster-prone areas in Indonesia, due to geographical, climatic, geological and other factors. Padang Pariaman is one area that is often affected by disasters, especially earthquakes. One of the vulnerable groups directly affected by the disaster is school-age children. Psychological problems in school-age children can affect life in the future. This area-based community service activity aims to increase independence, increase health status and community welfare by increasing the ability of school-age children to reduce the prevention of post-disaster psychosocial problems through group supportive therapy and Play Therapy. The target of this activity is school-age children and teachers, totaling 37 people. This activity is carried out from May to November 2021 in Padang Pariaman. The method of activity is education and simulation divided into three stages: (1) planning stage, (2) implementation stage, (3) evaluation stage. There is an increase in the understanding and skills of the community, especially school-age children in the prevention of post-disaster psychosocial problems, as well as an increase in the network of collaboration between the Health Polytechnic, the Ministry of Health of Padang and the District Government of Padang Pariaman.
Pembinaan dan Pendampingan Mualaf Kota Padang
Authors: Faisol Yufni , Hadi Syofyan , Reflinaldi Reflinaldi , Syafrian Syafrian
Published: December 2022

The coaching and mentoring activities for mualaf (converts) in Padang aim to enrich the understanding and practice of Islam for converts in aspects of faith, worship, muamalah, and economics. The first stage of the activity (26 October 2019) was coaching filled with the main material of tawhid, prayer, and reading the Qur'an. After the implementation of the first stage of activities, the team gave a 2-week break which was filled with mentoring. While the second stage (6 October 2019) was filled with a review of the development of understanding and practice of the first stage material. The team uses interactive dialogue, discussion, and controlled practice methods. Through this method, participants are taught to be strong in maintaining their faith. Participants are provided with theory and practice of prayer procedures and reading the Qur'an. Based on the observations made during the activity, it was seen that there was positive progress that showed an increase in participants' understanding of the procedures for praying and reading the Qur'an. The team also introduces patterns of social interaction and business opportunities in various industrial sectors, so that participants can achieve economic independence and be able to adapt in the community.
Peningkatan Capacity Building Aparatur Nagari: Pendampingan Pembentukan Badan Usaha Milik Nagari
Authors: Saputra Boni , Fajri Hidayatul , Nurhabibie Pratiwi , Syolendra Dwi Finna
Published: December 2022

This community service partner is the Preparation Nagari Government Lingkuang Aua Bandarejo and Preparation Nagari Government Mahakarya, which are two of the seventy-two Nagari resulting from the division in West Pasaman Regency in 2018 based on the Minister of Home Affairs Regulation Number 01 of 2017 concerning Village Arrangements. It is known that the Nagari resulting from this division does not yet have a Nagari-Owned Enterprise (BUM-Nag). So the purpose of this service activity is to provide assistance and counseling about the formation of BUM-Nag, contribute ideas and describe the importance of the existence of BUM-Nag. BUM-Nag is an alternative business entity that needs to be developed to encourage the Nagari economy, with the hope of creating new economic resources for Nagari to use and for the welfare of the Nagari community. Methods and approaches used: education, socialization, training, and mentoring “participatory rural appraisal”. This training phase begins with a survey and the establishment of goals and objectives to be achieved. This service program has a significant impact in increasing the knowledge, abilities, and skills of partners in the preparation of Nagari regulations regarding the formation of BUM-Nag, and partners can understand well about strengthening BUM-Nag institutions.
Pelatihan dan Sosialisasi Keselamatan dan Kesehatan Kerja (K3) di PT PLN (Persero)
Authors: Fardinal Fardinal , Leni Desmarita , Adril Elvis
Published: December 2022

Training and socialization of Occupational Safety and Health at PT. PLN (Persero) Teluk Sirih Generation Implementation Unit UIK SBS Bungus Padang District is a community service from the PKM PNP team. This training aims to provide education to employees of PT. PLN (Persero) Teluk Sirih Generation Implementation Unit, UIK SBS, Bungus District to always use occupational safety and health (K3) in the implementation of work. In the field there are still many workers or employees who do not heed the rules of work safety, such as not using safety shoes, helmets, gloves when needed, masks when needed, and even working at a height above 2 (two) meters must use a Body Harness. Employees' disobedience to K3 to maintain work safety will cause problems such as work accidents that still occur as a lot, because in cultivating the company's K3 rules, starting from the Top Management in the department. K3 culture must be applied properly to maintain work stability in the field by providing education through training and socialization of Occupational Safety and Health at PT. PLN (Persero) Teluk Sirih Generation Implementation Unit UIK SBS Bungus Padang District is expected to provide a clear understanding and good education on the understanding of K3 in the industrial world, especially PT. PLN. The method applied to this service provides training and socialization to staff, employees and stake holders of PT. PLN and aims to familiarize the 5S Work Attitude culture, as we know Seiri, Seiton, Seiso, Sheiketsu and Shitsuke. This training helped increase the understanding and awareness of the workforce of PT. PLN (Persero) Teluk Sirih Generation Implementation Unit UIK SBS on K3 culture and the use of personal protective equipment (PPE) for workers when doing work. It is hoped that later when the participants work, they will apply K3 to avoid work accidents.
Upaya Peningkatan Pemahaman Masyarakat melalui Penyuluhan Pentingnya Imunisasi pada Anak Usia Sekolah
Authors: Hanum Faiz Nur , Maulida Fathia , Suryani Lilis
Published: December 2022

One of the Goals of the Sustainable Development Goals is to ensure a healthy life and support well-being for all at all ages, and one of the ways is through immunization. Immunization is an effort to actively generate or increase a person's immunity to a disease, so that when exposed to the disease, he or she will not become sick or only experience mild illness. The purpose of this study was to increase public understanding of the importance of immunization, especially measles and rubella immunization in elementary school age children, by educating parents or guardians of children about the importance of immunization for elementary school age children. The method used is the lecture method (counseling) by following the prescribed health protocol rules. The number of participants in the counseling was 25 people. Counseling activities are carried out first and then followed by immunization activities for children. From all community service activities through counseling carried out, it can be seen that they are obtained in accordance with the objectives, namely the community understands the concept of immunization and is not afraid of the effects caused by immunization.
Pelatihan Mendeley Bagi Guru dan Calon Guru PAUD di Kota Jayapura
Authors: Krobo Andrianus , Sirjon Sirjon , Mamma Agustinus Tandilo
Published: December 2022

This activity is entitled "Mendeley Training for Teachers and Prospective PAUD Teachers in Jayapura City". The target number who attended the activity was 24 people. The purpose of this activity is to facilitate and train teachers and prospective PAUD teachers in Jayapura City to be able to use Mendeley as a reference manager. The methods applied in this training are presentations, questions and answers, and hands-on practice. In carrying out this activity, the skills and competencies developed are the ability to manage references in scientific writing and the ability to make citations. Based on the results of the evaluation carried out, data were obtained showing that of the 24 participants, there were 20 participants (83.33%) who were in the very good criteria, 3 participants (12.5%) were in the good criteria, and 1 participant (4 ,17%) is in the criteria of good enough. This shows that this training activity can improve the ability and competence of participants in using Mendeley as a reference manager.
Bimtek Penyusunan Rencana Pelaksanaan Pembelajaran Berbasis Kurikulum Merdeka Belajar untuk Guru di Sekolah Dasar
Authors: Nellitawati Nellitawati , Ermita Ermita , Hazizah Nur , Ningrum Tia Ayu
Published: December 2022

Solok is one of the areas in the Province of West Sumatra, Indonesia which is in a very strategic location, located at the intersection of roads between provinces and between districts/cities in West Sumatra. However, the results of the Solok City teacher competency test in 2020 are still low. Coupled with the existence of an independent learning policy that makes teachers and policy makers nervous. This is because many teachers do not understand how to prepare RPP (learning implementation plans) based on independent learning policies and their teaching materials. And for this region there has been no training for teachers on the preparation of lesson plans and teaching materials based on the independent learning policy.The solution to overcome this problem is to conduct training and direct guidance on the preparation of lesson plans and teaching materials based on independent learning policies for teachers. The technical guidance carried out involves education and learning experts. First, will be the transfer of knowledge about the policy of independent learning to teachers. Furthermore, the teachers will be guided and assisted to make plans for implementing learning and teaching materials based on independent learning. In this technical guidance, teachers will also be guided to be able to integrate technology in content creation, find teaching materials online, get interactive learning media used for learning implementation plans as guidelines in carrying out learning. lesson plans and semester learning plans.
Peningkatan Kualifikasi Guru IPA dalam Penyusunan LKPD Berbasis Project Based Learning
Authors: Oktaviani Coryna , Nurmasyitah Nurmasyitah , Reza Muhammad
Published: December 2022

Since the Government launched the prototype curriculum in 2022, the need for integration of project-based learning models into student worksheets (LKPD) has become very important. In fact, there are still many science teachers in Langsa City who do not use LKPD, especially LKPD based on PjBL (Project based learning). Therefore, the purpose of this service is to provide training and assistance in the preparation of PjBL-based LKPD. The method used is the presentation method and guided exercises in the form of mentoring during the practice of preparing PjBL-based LKPD. At the training stage, participants are provided with 16 meeting hours (JP) of materials related to the concept of PjBL-based LKPD, patterns and standards for the preparation of PjBL-based LKPD. Then in the mentoring stage, the teacher is guided by a service team for 16 meeting hours to compile PjBL-based LKPD, which is guided by aspects of appearance, content, and presentation as well as objectives and conclusions. The results of the design were evaluated jointly through a question and answer response after the results of each group's work were presented.
Pembangunan Iman dan Pembangunan Fisik Jemaat Terpencil Sebagai Wujud Pelayanan Holistik
Authors: Liu Doni Ariani Leowandri , Afi Kristiani E.Y.M. , Pairikas Fenetson , Kesse Simon , Mone Orista Y.D , Fomeni Melti M. , Bolo Hita , Tafuli Yetni
Published: December 2022

Based on the results of the interviews, information was found that the building of the congregation's faith and the physical construction of the church were issues faced by the GMIT Efata Oetfo congregation. The building of the faith of the congregation in question is related to the ministry, among others: 1). The absence of categorical worship of the fathers; 2). The absence of youth categorical worship; 3). Mothers are less active in categorical worship. The physical development in question is related to the completion of the construction of the church building, in this case the installation of ceramics that has not been carried out. Responding to these issues, the PKM implementation team conducted a needs analysis and found a solution to the problem, namely by conducting seminars and installing ceramics. The objectives to be achieved in this PKM activity are: 1). PKM participants can gain some knowledge as a form of education that can open their horizons of thinking about the importance of building faith through worship in service. The participants were also able to gain some knowledge about the role of the church in the economic empowerment of the congregation as a strategic way to increase the income of the congregation; 2). The church building of the GMIT Efata Oetfo congregation is progressing. The method of implementing the activity consists of several stages, namely: 1). Welcoming and reception of the congregation; 2). Opening; 3) Implementation of Seminar Activities; 4). Implementation of Ceramic Installation Activities; 5). Closing; 6). Activity Evaluation.
Peningkatan Kompetensi Literasi Digital Guru Melalui Bimtek Pembuatan Media dan Evaluasi Pembelajaran
Authors: Anisah Anisah , Darmansyah Darmansyah , Irsyad Irsyad
Published: December 2022

Online learning (on the network) is a demand in the 4.0 era (current industrial revolution. This is because of the development of technology and information so that learning must be carried out using technology. In addition, the Covid-19 outbreak gave birth to implementation policies learning carried out at home using online methods. For this reason, teachers are required tohave today's digital literacy competencies in order to be able to do online learning. However, the current problem is that there are still many teachers who do not understand technology digital, namely 97.5% of teachers. This is as known from the results of interviews in Malalak District Agam Regency, West Sumatra that there are still many teachers who have not been able to implement learning using digital technology. And also there are still many teachers who are not able to carry out online learning. There are still many teachers who have not been able to evaluate online learning. The solution to overcome these problems is to transfer knowledge through online learning guidance for teachers. The first step is to do testing digital literacy competence of teachers through a questionnaire. After that give understanding to the teacher about online learning. Then the next stage is conducting technical guidance on the manufacture of innovative and interactive learning media for learning. Next, technical guidance is carried out about the implementation of online learning evaluation for teachers. The last stage is to evaluate about the digital literacy competence of teachers regarding the implementation and evaluation of online learning using a questionnaire. The output of the results of this community service activity are scientific publications, namely: articles on Journals with ISSN / Proceedings of National journals, namely colloquium journals, video service activities, and publication in print/online mass media, namely the Haluan newspaper. And also activity report.