bluuebunny/crossref_metadata_2025 huggingface dataset:
Can models adequately reflect how long-term nitrogen enrichment alters the forest soil carbon cycle?
Authors: Eastman Brooke A. , Wieder William R. , Hartman Melannie D. , Brzostek Edward R. , Peterjohn William T.
Published: February 2023

Abstract. Changes in the nitrogen (N) status of forest ecosystems can directly and indirectly influence their carbon (C) sequestration potential by altering soil organic matter (SOM) decomposition, soil enzyme activity, and plant-soil interactions. However, model representation of linked C-N cycles and SOM decay are not well-validated against experimental data. Here, we use extensive data from the Fernow Experimental Forest long-term, whole-watershed N fertilization study to compare the response to N perturbations of two soil models that represent decomposition dynamics differently (first-order decay versus microbially-explicit reverse Michaelis-Menten kinetics). These two soil models were coupled to a common vegetation model which provided identical input data. Key responses to N additions measured at the study site included a shift in allocation to favor woody biomass over belowground carbon inputs, reductions in soil respiration, accumulation of particulate organic matter (POM), and an increase in soil C:N ratios. The vegetation model did not capture the often-observed shift in allocation with N additions, which resulted in poor predictions of the soil responses. We modified the plant C allocation scheme to favor wood production over fine root production with N additions, which significantly improved the vegetation and soil respiration responses. To elicit an increase in the soil C stocks and C:N ratios with N additions, as observed, we also modified the decay rates of the particulate organic matter (POM) in the soil models. With all of these modifications, only the microbially explicit model captured a positive soil C stock and C:N response in line with observations. Our results highlight the importance of accurately representing plant-soil interactions, such as rhizosphere priming, and their responses to environmental change.
A Comparative Analysis of In-Situ Measurements of High Altitude Cirrus in the Tropics
Authors: Cairo Francesco , Krämer Martina , Afchine Armin , Di Liberto Luca , Khaykin Sergey , Lucaferri Lorenza , Mitev Valentin , Port Max , Rolf Christian , Snels Marcel , Spelten Nicole , Weigel Ralf , Borrmann Stephan
Published: February 2023

Abstract. We analyze cirrus cloud measurements from two dual-instrument cloud spectrometers, two hygrometers and a backscattersonde in view to connect cirrus optical parameters usually accessible by remote sensing with microphysical size resolved and bulk properties accessible in situ. Specifically, we compare the particle backscattering coefficient and depolarization ratio to the particle size distribution, effective and mean radius, surface area density, particle aspherical fraction and ice water content. Data have been acquired by instruments on board the M55 Geophysica research aircraft during July and August 2017 during the Asian Monsoon campaign based in Kathmandu, Nepal, in the framework of the StratoClim (Stratospheric and upper tropospheric processes for better climate predictions) project. Cirrus have been observed over the Hymalaian region between 10 km and the tropopause, situated at 17–18 km. The observed particle number densities varied between 10 and 10-4 cm-3 in the dimensional range from 1.5 to 468.5 μm in radius. Correspondingly, backscatter ratios from one tenth up to 50 have been observed. Optical scattering theory has been used to compare the backscattering coefficient computed from measured particle size distribution with those directly observed by the backscattersonde. The aspect ratio of the particles, modeled as spheroids for the T-matrix approach, was left as a free parameter to match the calculations to the optical measures. The computed backscattering coefficient can be set in good agreement with the observed one, but the match between simulated and determined depolarization ratios is insufficient, however. Relationships between ice particle concentration, mean and effective radius, surface area density and ice water content with the measured backscattering coefficient are investigated for an estimate of the bulk microphysical parameters of cirrus clouds from remote sensing lidar data. The comparison between particle depolarization and aspherical fraction as measured by one of the cloud spectrometers equipped with a detector for polarization, represents a novelty since it was the first time the two instruments are operated simultaneously on aircraft. The analysis shows the difficulty of establishing an univocal link between depolarization values and the presence and amount of aspherical scatterers. This suggests the need of further investigation that could take into consideration not only the fraction of aspheric particles but also their predominant morphology.
Mckelveyite group minerals – Part 2: Alicewilsonite-(YCe), Na2Sr2YCe(CO3)6  ⋅  3H2O, a new species
Authors: Lykova Inna , Rowe Ralph , Poirier Glenn , Friis Henrik , Helwig Kate
Published: February 2023

Abstract. The new mckelveyite group mineral alicewilsonite-(YCe),
ideally Na2Sr2YCe(CO3)6 ⋅ 3H2O, was found
at Mont Saint-Hilaire, Quebec, Canada, and subsequently at the Saint-Amable
sill, Quebec, Canada, and the Khibiny Massif, Kola Peninsula, Russia.
Alicewilsonite-(YCe) crystals are commonly hemimorphic pseudotrigonal and
pseudohexagonal and show barrel-shaped, saucer-shaped, spindle-shaped,
cone-shaped, columnar, tabular, and platy habits. They are usually up to 2–3 mm in size with some larger crystals reaching 2–3 cm. The crystals often
form stacked or parallel growth aggregates and rosettes.
Alicewilsonite-(YCe) colour varies from pale yellow to yellow, lemon yellow,
green yellow, orange-yellow, pale green to green, pale grey to grey, green
grey, beige, and colourless. The streak is white; the lustre is vitreous.
The cleavage is fair to indistinct, parallel to (001). The Mohs hardness is
3. Dcalc is 3.37 g cm−3. Alicewilsonite-(YCe) is optically biaxial
(+), with α=1.554(3), β=1.558(3), γ=1.644(2), 2V (calc.) = 26∘, 2V (meas.) = 20(3)∘ (589 nm).
The IR spectrum is reported. The
composition (wt %, average of six analyses) is Na2O 7.42, CaO 0.72,
SrO 21.49, BaO 1.41, Y2O3 8.52, La2O3 5.93,
Ce2O3 9.52, Pr2O3 0.59, Nd2O3 1.75,
Sm2O3 0.46, Gd2O3 0.83, Dy2O3 1.65,
Ho2O3 0.34, Er2O3 1.21, Yb2O3 0.64, CO2
29.33, H2O 6.13, total 97.94. The empirical formula of the holotype
calculated on the basis of six cations is
Na2.11Ca0.11Sr1.83Ba0.08Y0.67(Ce0.51La0.32Pr0.03Nd0.09Sm0.02Gd0.04
Dy0.08Ho0.02Er0.06Yb0.03)Σ1.20(CO3)5.88 (H2O)3.00.
The mineral is triclinic,
P1, a=9.0036(6) Å, b=9.0175(6) Å, c=6.7712(5) Å, α=102.724(2)∘, β=116.398(2)∘, γ=60.003(2)∘, V=426.46(5) Å3,
and Z=1. The strongest
reflections of the powder X-ray diffraction pattern [d,Å(I)(hkl)] are
6.07(31)(001), 4.372(100)(120, 2‾1‾1, 11‾0), 4.037(25)(1‾11, 1‾2‾1, 210),
3.201(25)(121, 2‾1‾2, 11‾1),
2.831(67)(1‾12, 1‾2‾2, 211, 1‾21, 21‾0), 2.601(39)(030, 3‾3‾1,3‾01), 2.236(24)(2‾4‾1, 2‾21,
4‾2‾1). 2.019(23)(003, 2‾22, 2‾4‾2‾, 420). 1.9742(24)(032, 3‾03,
3‾3‾3, 331, 03‾2, 301). The crystal
structure, solved and refined from single-crystal X-ray diffraction data
(R1=0.055), is of the weloganite type.
Punishment in an Early Colonial Society: The Inglorious History of Wellington Gaol, 1844–1931
Authors: Bowling ((Kāi Tahu) Rebekah , Pratt John
Published: February 2023

In 1844, a replica of the famous Pentonville Prison was built in Wellington, New Zealand, shortly after the commencement of British colonisation. It never matched the size and scope of the London original and was demolished in 1931. However, the existence of this incongruous New Zealand institution raises important sociological issues. First, it will be argued that it had symbolic importance in maintaining settler identity with the homeland. Second, it had a functional importance in terms of the way it represented the ability of the colonial government to subdue any recalcitrant who sought to challenge the authority of British imperial power. Third, its closure came about because of longstanding pressure from local citizens, for whom its presence had become an unwanted stain on the otherwise untainted local landscape, reflecting New Zealand’s transition from a frontier society to a modern society with the sensibilities associated with it.
Past–Present Differential Inclusion: Australia’s Targeted Deportation of Pacific Islanders, 1901 to 2021
Authors: McNeill Henrietta , Marmo Marinella
Published: February 2023

In Australia, past and present, Pacific Islanders have been labelled as undesirable others, included to temporarily fill labour shortages as required, controlled while resident in the country and removed when no longer deemed necessary. Pacific Islanders’ experiences in Australia reveal the inception, continuity and durability of differential inclusion produced by border control mechanisms. This paper traces Australia’s history of deporting Pacific Islanders over more than a century: from indentured labour and blackbirding, colonial occupation of Pacific Islands and the White Australia Policy, to more recent patterns of selective inclusion, such as the labour mobility schemes, to the disproportionate effects on Pacific Islanders of modifications to the criteria for deportability introduced in 2014 with the amendments to Section 501 of the Migration Act 1958 (Cth). By tracing the past–present circular border policies, this paper argues that the high number of Pasifika New Zealanders deported from Australia represents a continuation of a regime of differential inclusion.
Rachel Dixon (2022) Infanticide: Expert Evidence and Testimony in Child Murder Cases, 1688-1955. London: Routledge
Authors: Nagy Victoria
Published: February 2023

Victoria Nagy reviews Infanticide: Expert Evidence and Testimony in Child Murder Cases, 1688-1955 by Rachel Dixon.
Formação de pesquisadores em integridade na pesquisa: espaços e subsídios relacionados aos cuidados éticos na pesquisa educacional
Authors: Mercado Luis Paulo Leopoldo , Rego Ana Paula Monteiro
Published: February 2023

Neste artigo, discutem-se ética e integridade na pesquisa no processo de formação do professor-pesquisador. Identificam-se fragilidades éticas presentes nas diversas etapas da pesquisa e questiona-se a formação do pesquisador em Educação para a conduta ética e a integridade da pesquisa na Graduação e na Pós-Graduação. Foi um estudo qualitativo, exploratório e de revisão desenvolvido a partir de artigos disponíveis no banco de periódicos da Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Capes) e da Scientific Electronic Library Online (SciELO), publicados entre os anos de 2012 e 2022. Os resultados apontam que, na Graduação e na Pós-Graduação em Educação, as fragilidades éticas em pesquisa podem ser abordadas em diversos espaços. Os componentes curriculares da Graduação e as atividades de iniciação à pesquisa e extensão são espaços de discussão para a conduta ética e a integridade na pesquisa. Na Pós-Graduação em Educação, os componentes curriculares, os grupos de pesquisa e as atividades de orientação são espaços de promoção da integridade e da ética na pesquisa.
Information Communication Technology (ICT) among University Students in Pakistan
Authors: Mumtaz Lama , Ali Mujahid , Fatima Ambreen , Shaikh Faiza
Published: February 2023

In the sphere of education, the influence of technology is growing tremendously. However, due to rapid technical progress, its implementation has been fraught with various difficulties, particularly in developing countries. This study investigates current trends and challenges in the use of information and communication technology (ICT) among university students in Karachi, Pakistan. The study is based on a quantitative approach. A random sample of 130 university students is collected through a paper-pencil survey questionnaire. For data analysis, descriptive statistics are applied. According to the results, the majority of students use smartphones for educational purposes and spend more time on the internet for entertainment and other purposes than for academic purposes. They acknowledge the significant role of technology in their learning and have an intermediate level of computer skills. Most of the students are dissatisfied with the available ICT-based technology in universities.
PREVENÇÃO À PRESENÇA DE UMIDADE NA ALVENARIA
Authors: Salvador Antonio Carlos , Rosa Alaor Leandro , Ferreira Fontes Diogo , De Oliveira Maneu Gabriel
Published: February 2023

RESUMO: As normas brasileiras dispensam a elaboração de projeto e responsabilidade técnica de impermeabilização (estanqueidade) para imóveis residenciais unifamiliares e, nesse caso, resulta que a prevenção à umidade nessas habitações é feita de forma pontual sem integração. Este estudo aborda a umidade do solo que possa, direta ou indiretamente, atingir a alvenaria e elevar a umidade do ambiente interno, com consequências negativas para o concreto, alvenaria, móveis e à saúde dos ocupantes causando doenças tais como asma e rinites por fungos e vírus aeroalérgenos que encontram em ambientes úmidos as condições propícias para sua reprodução e disseminação. Neste trabalho foram identificados os pontos críticos na interface concreto-solo e concreto-rede hidrossanitária; e abordados, também, os custos e as vantagens do investimento na prevenção e as desvantagens de intervenções em manifestações patológicas no pós-obra. São propostas medidas que aumentam a estanqueidade da fundação com uso de impermeabilizante químico, manta asfáltica e complementos com ventilação e proteção mecânica nas ligações da rede hidrossanitária ao concreto da fundação.
DIFICULDADES E SOLUÇÕES NA IMPLANTAÇÃO DA NORMA DE DESEMPENHO EM UMA EMPRESA CONSTRUTORA GOIANA
Authors: Amaral Tatiana Gondim do , Fabiano Costella Marcelo , de Souza Marques Lahuana Oliveira , Carraro Fausto
Published: February 2023

RESUMO: O setor da construção civil vem passando por um período de adaptação à norma de desempenho. A presente pesquisa tem como objetivo avaliar qualitativamente a implantação da norma de desempenho em uma incorporadora e construtora de Goiânia. Foram analisados os métodos de controle empregados pela empresa durante o período de 2015 a 2020 com o intuito de descrever os mecanismos utilizados neste processo para a contratação de projetistas, análise de projetos, ensaios realizados na fase de planejamento do empreendimento até a sua conclusão, métodos executivos e melhorias em seu Sistema de Gestão da Qualidade. Dessa forma, o trabalho contribuiu com a discussão sobre as particularidades da implantação da norma de desempenho no setor da construção, além de auxiliar na identificação e discussão das principais dificuldades enfrentadas pela empresa objeto do estudo de caso para a aplicação da norma. A empresa avaliada demonstrou amadurecimento em relação às iniciativas para o atendimento aos requisitos da norma de desempenho NBR 15575 evidenciada por uma evolução clara nos processos e procedimentos para elaboração de projetos.
 ABSTRACT: The civil construction sector has been going through a period of adaptation to the performance standard. This research aims to qualitatively evaluate the implementation of the performance standard in a developer and construction company in Goiânia. The control methods used by the company during the period from 2015 to 2019 were analyzed, to describe the mechanisms used in this process in relation to the hiring of designers, project analysis, tests carried out in the planning phase of the project until its conclusion, executive methods, and improvements to its Quality Management System. Thus, the work contributed to the discussion on the mandatory implementation of the performance standard in the construction sector, in addition to assisting in the identification and discussion of the main difficulties faced by the company object of the case study for the application of the standard.
MÉTODO PARA REFORÇO DE VIGA SUBMETIDA À FLEXÃO POR COLAGEM EXTERNA DE COMPÓSITOS REFORÇADOS COM FIBRAS DE CARBONO
Authors: De Oliveira Lima Yuri , Rafael Duarte Cavalcante Jonas Rafael , Camerino Lira Uchôa Bruna
Published: February 2023

RESUMO:  As edificações de concreto armado em geral estão sujeitas ao surgimento de manifestações patológicas ao longo da sua vida útil, causadas por efeitos de agressividade ambiental, inconformidades de projeto, construção ou mudanças de função da edificação, surgindo a necessidade de reparo, recuperação ou reforço da estrutura. O presente artigo tem como objetivo apresentar um estudo teórico sobre o dimensionamento do reforço de vigas submetidas à flexão com CRFC (Compósitos Reforçados com Fibra de Carbono). O embasamento teórico foi construído a partir da ACI 440-2R (2008) e ABNT NBR 6118 (2014), onde o modelo de cálculo é baseado no Estado Limite Último (ELU) complementado com estudos realizados por meio de revisões bibliográficas de trabalhos acerca do assunto. Foi idealizada uma situação problema com o intuito de realizar as aplicações das teorias abordadas onde, após a aplicação dos cálculos foi observado grande potencial do reforço à flexão com CRFC, apresentando baixas alterações na seção transversal do elemento estrutural, alto grau de resistência dos CRFCs, com excelentes propriedades mecânicas e mostrando ser um excelente material para ser utilizado no reforço de estruturas de concreto armado. Contudo, foi observado que vigas em concreto armado originalmente dimensionadas no limite de ductilidade, quando reforçadas, fatalmente passaram desse limite, sendo de grande importância a análise da situação para o comportamento dúctil do elemento estrutural.
 ABSTRACT: Reinforced concrete buildings in general are subject to the emergence of pathologies manifestations throughout their useful life, caused by environmental aggressiveness, design nonconformities, construction, or changes in the function of the building, thus requiring repair, recovery or reinforcement of the structure. This article presents a theoretical study on the dimensioning of the reinforcement of beams submitted to bending with CRFC (Composites Reinforced with Carbon Fiber). The theoretical basis was constructed from ACI 440-2R (2008) and ABNT NBR 6118 (2014), where the calculation model is based on the Ultimate Limit State (ELU) complemented with studies conducted through bibliographic reviews of works on the subject. A problem situation was idealized in order to perform the applications of the theories addressed, where after the application of the calculations, a great potential of bending reinforcement was observed with CRFC, presenting low changes in the cross-section of the structural element, high degree of strength of CRFCs, with excellent mechanical properties and showing to be an excellent material to be used in the reinforcement of reinforced concrete structures. However, it was observed that reinforced concrete beams originally dimensioned at the ductility limit, when strengthened, fatally crossed this limit, being of great importance analysis of the situation for the dubious behavior of the structural element.
Issues of Green Procurement in the Republic of Armenia (By the Example of the City of Yerevan)
Authors: GALSTYAN HAMAZASP , BADADYAN GAGIK , TATOSYAN KRISTINE , SHAHINYAN MHER
Published: February 2023

Green procurement as a green financing tool is an important prerequisite for
building the green economy. By implementing green procurement, it is possible to ensure
a green transformation, while ensuring sustainable development sa well. Ensuring the use
of green procurement in the process of green transformation of Yerevan, the capital of
the Republic of Armenia, is also a vital necessity. In this case, the study of the existing
situation, the raising of issues and the presentation of the proposal for the use of the
appropriate tool set are derived from the imperative of the green transformation of the
capital city of Yerevan. Regarding public procurement in the Republic of Armenia there is
no specific system for the implementation of green procurement, and the organization of
these processes is based only on voluntariness. In this case, with the analysis carried out
in the given paper, an attempt was made to evaluate the situation, and also the concept of
the implementation of the green procurement system was presented.
Main Ways of International Tourism Development in the Republic of Armenia
Authors: MEJLUMYAN SHOGHIK
Published: February 2023

The primary purpose of the paper is to comprehensively analyze the development of
ways and opportunities for the international tourism industry in Armenia. In this context,
through analyzing historical series, and using the method of comparative analysis, the
author presents the tourism processes in Armenia, combining them with state regulation
necessity of the sphere. As a result, the author implies that the effectiveness of
international tourism and the country's competitiveness (in this case, Armenia) hugely
depend on relevant and proper state policy and acknowledgment of the industry's
potential. In the countries with a stable tourism industry, the state's role and participation
in the sector's regulation are active. Besides, tourism has severe social consequences,
from the impact of the micro-environment on the family to the society in general.
Effect of Blood Donor Service Quality on Blood Donor Satisfaction in Blood Donation Unit (UDD) PMI of Surakarta City
Authors: Pangestika Lydia Dessy , Syarifah Syarifah
Published: February 2023

Blood supply services in Indonesia are carried out by the Blood Transfusion Unit (BTU) and the Hospital Blood Bank (HBB). BTU is a health service facility who organized donations of blood, providers, and distribution of blood. The objective in this research is to determine the effect of the quality of blood donor services on blood donors in the Blood Donor Unit (BDD) Indonesian Red Cross Surakarta City. This research uses descriptive research method with quantitative approach and cross sectional research design. The population in this study is based on the number of 40% of the average 7,500 donors / month is 3,000 donors taken from the Blood Donor Unit (BDU) Indonesian Red Cross Surakarta City. Determination of the sample is calculated Slovin formula, with a known population of 3,000 people with an error rate of 10%, the results obtained are 100 samples. The data used is primary data obtained directly from respondents through questionnaires and processed using SPSS and Microsoft Excel. The analysis is presented in the form of frequency distribution tables and graphs. Donor satisfaction can almost completely be explained by service quality. This is evidenced by the calculation of the coefficient of determination with an R square value of 53.2%. This means that donor satisfaction can only be explained by the variable quality of blood donor services by 53.2%, the rest is influenced by other factors outside this research model. The quality of blood donation services has a significant effect on blood donor satisfaction at Blood Donor Unit (BDU) Indonesian Red Cross Surakarta City.
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Unit Transfusi Darah dan Bank Darah Rumah Sakit merupakan unit pelaksana pelayanan darah di Indonesia. Dimana berfungsi sebagai fasilitas pelayanan donor darah, menyediakan darah, dan distribusian darah. Tujuan penelitian ini adalah untuk mengetahui pengaruh kualitas pelayanan donor darah terhadap pendonor darah di Unit Donor Darah (UDD) PMI Kota Surakarta. Deskriptif kuantitatif dengan desain cross sectional diterapkan dalam penelitian ini. Populasi sebesar 3.000 pendonor di UDD PMI Kota Surakarta. Penentuan sampel dihitung menggunakan rumus slovin, dengan diketahui jumlah populasi 3.000 orang dengan tingkat kesalahan 10% maka diperoleh hasil 100 sampel. Data yang digunakan yaitu kuesioner diolah dengan SPSS dan Microsoft Excel. Analisa ditampilkan dalam tabel distribusi serta grafik. Kepuasan pendonor berhubungan erat dengan kualitas pelayanan. Dilihat dari nilai R square sebesar 53,2%. Artinya kepuasan pendonor dipengaruhi oleh variabel kualitas pelayanan donor darah sebesar 53,2%. Kualitas pelayanan donor darah berpengaruh signifikan terhadap kepuasan pendonor darah di UDD PMI Kota Surakarta.
#Makincapdigital Webinar throughout Indonesia as an Implementation of Digital Scout Empowerment for the Community
Authors: Rahmadi Andhi Nur , Fitria Nurul Jannah Lailatul
Published: February 2023

Pemberdayaan masyarakat bagian dari upaya pemerintah dalam penyelenggaraan pembangunan negara. Pemberdayaan masyarakat diagendakan dengan rangkaian kegiatan yang berkesinambungan, berkelanjutan, dan berkala secara dinamis. Bentuk kegiatan dalam pemberdayaan memanfaatkan unsur-unsur potensial yang ada secara sinergis. Tujuan utama dari pemberdayaan untuk meningkatkan kekuatan secara mandiri untuk memenuhi kebutuhannya dan mampu beradaptasi dengan tantangan masa depan. Pemerintah dalam hal ini diwakilkan oleh Kementerian Kominfo meluncurkan program kegiatan pemberdayaan masyarakat dengan konsep webinar. Tema webinar ini adalah Literasi Digital Nasional "Makin Cakap Digital". Sebagai bentuk pemberdayaan masyarakat di era digital. Riset dalam naskah ini, menggunakan metode  kualitatif deskriptif. Kajian menerapkan sistem studi kasus dalam riset. Fokus dalam riset berorientasi pada power dan intervensi media baru dalam konsep pemberdayaan masyarakat secara daring dengan menggunakan platform webinar. Tujuan penelitian untuk mengetahui konsep media baru membahas materi 4 pilar terkait literasi digital yang diselenggarakan oleh Kominfo. Program webinar ini dapat memaparkan value masyarakat untuk berpartisipasi aktif pada paradigma baru pembangunan khususnya berkaitan dengan literasi digital. Konsep kegiatan webinar Literasi Digital Nasional "Makin Cakap Digital" oleh Kominfo merupakan strategi pemerintah mewujudkan 6 dimensi pemberdayaan dengan pemaparan 4 pilar literasi digital.
Effect of Past Experience, Empathy, Efficacy and Social Support on Social Entrepreneurial Intentions
Authors: Hamdani Luthfi
Published: February 2023

This study aims to measure the various factors that influence the intention to do social entrepreneurship in the younger generation. Students of the Islamic Business Management study program, UIN Raden Mas Said Surakarta were selected as respondents. This study has four independent variables (previous experience, empathy, self-efficacy and social support) and one dependent variable, namely social entrepreneurship intentions. The quantitative method was chosen as the approach and used a questionnaire as an instrument in collecting data. The population in this study amounted to 2097 people consisting of 4th and 6th semester students in 2022. Multiple linear regression analysis was applied to analyze the collected data. The results of the partial test show that the four independent variables have a significant positive effect on the dependent variable. Furthermore, simultaneously the four variables have a significant effect on social entrepreneurial intentions. The four independent variables in this study were able to explain 33.7% of the variation in entrepreneurial intentions, while the rest (66.3%) were explained by various other factors not included in this study.
Mid-Term Survivorship, Radiographic and Functional Outcomes of Robotic-Assisted Unicompartmental Knee Arthroplasty
Authors:   Department of Arthroplasty, Hospital for Special Surgery Florida, West Palm Beach, Florida, Roche Martin W. , Law Tsun Yee ,   Department of Orthopaedic Surgery, Hospital for Special Surgery Florida, West Palm Beach, Florida, Vakharia Rushabh M ,   Orthopedic Research Institute, Holy Cross Hospital, Fort Lauderdale, Florida, Mekkawy Kevin L. ,   Department of Orthopaedic Surgery, Maimonides Medical Center, Brooklyn, New York, Rodriguez Hugo C. ,   Department of Orthopaedic Surgery, Larkin Community Hospital, South Miami, Florida
Published: February 2023

Introduction: The use of robotic-arm assistance for medial unicompartmental knee arthroplasty (RAUKA) has become an area of interest to overcome technical challenges, improve accuracy, and optimize patient outcomes. Due to the rise in osteoarthritis (OA) and robotic assistance, well-powered long-term studies are warranted. The aim of this study was to analyze midterm survivorship, radiographic changes, range of motion (ROM), and patient-reported outcome measurements (PROMs) of RAUKA. Materials and Methods: Patients who underwent RAUKA for medial compartmental OA were identified from April 2009 to May 2014. The query yielded 162 knees with a mean follow up of 6.5 years. Primary endpoints were to compare survivorship, final mechanical axis alignment, radiographic changes, mean ROM, and changes to the following PROMs: Knee Society Score (KSS), International Knee Documentation Committee (IKDC), and Oxford Knee Score (OKS). Statistical analyses were primarily descriptive. A p-value less than 0.05 was considered statistically significant. Results: There were no revisions of the primary implant, one case required exchange of polyethylene bearing and debridement for deep infection, and five cases required additional surgical intervention with implant retention. Overall survivorship was 100%. Radiographic assessment demonstrated no mechanical loosening or osteolysis surrounding the implant. Mean ROM was 3 to 121.9º. Patients demonstrated a mean functional KSS of 78.55, IKDC of 78.22, and OKS of 43.94. Conclusions: The study supports excellent mid-term outcomes in patients undergoing RAUKA for medial compartment OA. Longer term follow-up studies are necessary to determine the efficacy of this technology for patients undergoing RAUKA for medial compartment OA.
3D Printed Composite Structures for Bone Repair and Drug Delivery Application
Authors: William Joshua , Mtebwa Mahamudu , Mtei Regina , Macha Innocent
Published: February 2023

Due to the increase in traffic accidents, industrial contingencies, and natural disasters, there is a high demand for bone regeneration biomaterials. Although bone can regenerate and self-repair, it is difficult to do so when the defect area exceeds the critical repair area due to trauma, tumour resection, or congenital diseases. The traditional methods for bone repair are autograft, allograft, and xenograft. However, these methods have flaws and limitations, such as complications in the donor bone area, a limited number of donors, rejection, and infectious diseases. However, in recent years, the use of additive manufacturing technologies in bone tissue engineering has increased. Three-dimensional printing (3DP) is gaining popularity among the various technology options due to its ability to directly print porous composite with designed shape, controlled chemistry, and interconnected porosity. Some of these inorganic composites are biodegradable and have proven ideal for bone tissue engineering, with the ability to deliver growth factors or drugs to specific sites. The purpose of this study is to discuss recent advancements in 3D printed bone tissue engineering composite, as well as current challenges and future directions.
Optimal Energy Management for off-Grid Hybrid Renewable Energy Systems
Authors: Suwi Owdean , Justo Jackson
Published: February 2023

A photovoltaic (PV)/wind/battery/Generator-Set hybrid power system's energy dispatch is discussed in this research, along with the ideal solution. The optimization model enables the hybrid power system's generating devices to share power appropriately. The main goals are to minimize fuel consumption and costs and maximize the usage of Renewable Energy Sources (RES). The proposed simulation plan succeeds in lowering fuel costs because the diesel generator only kicks on at night and in the early morning when the energy from RES is insufficient to supply the load. The load is supplied with power, and the battery is charged throughout the day, when the production of electricity from the wind and solar generators is highest. The use of diesel is minimal. However, based on their particular characteristics and the operational limitations of the system, the generating devices effectively share the power needed from the hybrid power system.
Sensible Heat Bean Cooker
Authors: Lwiwa Casiana , Nydal Ole
Published: February 2023

Alternative cooking energy to replace wood fuels is needed in the African context. Liquified Natural Gas (LNG) is a solution but is still based on burning fossil fuel. Electrical cookers can be an alternative as well. However, for off-grid systems this means electrical batteries are required, as the solar electricity from Photovoltaic (PV) panels is intermittent, and as cooking is also to be made after sunset. Heat storage technologies can provide solutions where available energy is stored in the form of heat for cooking when needed. The challenge is then to develop systems which are robust, safe, and technically simple. A very simple small-scale solution is demonstrated here, for the particular case of cooking beans. An insulated iron cylinder is heated, either in a solar concentrator or by PV-powered heating elements. The stored heat can then be calibrated to the cooking of a given volume of beans. After the cylinder has reached the calibrated temperature during the charging, the pot can be placed and left on the top of the cylinder. When the energy is depleted, the beans should be ready cooked.
Studying Dielectric Losses of Serially Combined Silicone Rubber and Epoxy Resin
Authors: Mushi Aviti , Justo Jackson , Kyaruzi Alexander
Published: February 2023

High voltage outdoor insulation systems are conventionally ceramics and glass with several advantages, such as proven in the field, excellent dielectric properties, durability, and long life. However, they are heavy, attract vandals and break easily, and they can lose their dielectric properties easily when subjected to high voltage transients, arcing, and surges. To curb this, polymer insulators are used because they have excellent dielectric properties, such as those of ceramics and glass, with the added advantages that they do not break easily and recover their lost dielectric properties after any electrical transients. Therefore, this paper investigates the dielectric properties of polymeric materials – silicone rubber (SR) and epoxy resin (ER). Some SR samples were manufactured in the laboratory, and others were obtained from the industrial manufacturer. All the ER samples were manufactured in the laboratory. The dielectric measurements were performed with the Insulation Diagnostics System. Within the measured frequency ranges, the dielectric losses of SR manufactured industrially differ from the laboratory-manufactured specimens. This is due to filler materials in the industrially manufactured samples. For the case of serially connecting the SR and ER, there was a higher influence of dielectric loss of SR than the ER, with some remarkable dielectric losses at some frequencies.
Factors Influencing Total Productive Maintenance Implementation for Thermal Generation Plants
Authors: Danguche Issa , Taifa Ismail
Published: February 2023

This study accepts that the technical and administrative factors can amplify effective total productive maintenance (TPM) implementation at thermal generation plants. It is noted that there is a limited number of studies that have attempted to understand the subject of TPM implementation in the energy sector. Noting this shortcoming, the authors thought it crucial to generate empirical evidence on the factors influencing effective TPM implementation for thermal generation plants, with evidence from gas-fired plants. A sample of 88 respondents was selected and consulted. Data were collected through questionnaires and analyzed quantitatively by inferential statistics and qualitatively through thematic analysis using SPSS version 20.0. Confirmatory factor analysis (CFA) was performed through LISREL software version 8.0. On inferential analysis, correlation, regression and ANOVA were performed. Multiple regression analysis results indicate that administrative factors, including management support, TPM awareness, employee participation and strategic planning, positively and significantly influence TPM implementation. Also, technical factors comprising planned maintenance, autonomous maintenance, quality maintenance and early equipment management positively influence TPM implementation at thermal generation plants. The correlation coefficient for all factors was at least 0.6, and the p-value was less than 0.05, suggesting that the study’s independent variables reliably predict the dependent variable. The additional factors influencing TPM implementation include training and education, organization of the workplace, root cause analysis and continuous improvement. From this juncture, the study concludes that effective TPM implementation in the energy sector, especially at thermal generation plants, can be accomplished if many administrative and technical factors are considered. These factors comprise management support, TPM awareness, strategic planning, employee participation, workplace organization, training and education, planned maintenance, autonomous maintenance, quality maintenance, early equipment management, continuous improvement and root cause analysis.
The Fourth Industrial Revolution: Opportunities and Challenges to the Future of Mechanical Engineering
Authors: Mbamba Ulingeta
Published: February 2023

This paper provides a conceptual overview of the developments of the Fourth Industrial Revolution (4IR) and derives challenges and opportunities for the future of the mechanical engineering profession. The paper broadly defines 4IR as the fusion of technologies and interaction across physical, digital and biological aspects, while defining mechanical engineering as "a multi-faceted discipline that encompasses the teaching, practice and guidance of others in the development and application of scientific principles to mechanical systems". The paper looks specifically at developments in the Internet of Things (IoT), blockchain technology, robotics, Big Data analytics, biotechnology, nanotechnology, 3D printing and artificial intelligence and their impact on mechanical engineering. It will also explain the impact of 4IR and emerging fields such as electronic vehicles, mechatronics and others. The aim is to show that the world is in the age of 4IR, the impact of which will be felt in all professions, although the scale in general and the scope of mechanical engineering in particular cannot yet be properly assessed. The paper concludes by stating that the world is in the 4IR era, the impact of which will be felt in all professions and the future extent of which cannot be accurately estimated. The paper ends with a recommendation on the importance of mechatronics and soft skills.
Modelling Producer Prices Using Artificial Neural Network and ARIMA Methods for Türkiye
Authors: Tuncsiper Cagatay
Published: February 2023

The increase in the producer prices limits the activities of the companies and leads to the deterioration of the national product, employment and consumer prices. In this study, the relations between the oil price, exchange rate, interest rate, wages and the producer prices for the period of 2002Q01-2022Q03 in Türkiye were examined using autoregressive moving averages (ARIMA) and artificial neural network (ANN) methods. The employed ANN structure consists of an input layer, a hidden layer with 100 neurons and an output layer. The ANN is trained and then the modelling and forecasting performances of the traditional ARIMA and nonlinear ANN methods are compared. RMSE, MAE, MAPE and R2 criteria were used to evaluate the predictive power of the ARIMA and ANN models. As a result of automatic ARIMA model estimation, it has been determined that the producer prices can be modelled using an ARMA(4.4) model, which is a subset of the ARIMA modelling. MAE, RMSE, MAPE and R2 values of ARIMA and ANN models show that the ARMA(4,4) model has slightly better accuracy compared to the ANN model. In addition, according to the ARMA(4.4) model, it is shown that the interest rate, exchange rate, oil prices and wages affect producer prices. In this context, our policy recommendations are to follow a low interest policy and to encourage the use and production of electric vehicles to reduce the use of fossil fuels in order to reduce producer prices.

Keywords: Producer price index, artificial neural network ARIMA, economic modelling.
Pengaruh Iklim Organisasi Madrasah terhadap Motivasi Kerja Untuk Mewujudkan Kinerja Guru
Authors: Salamah Ummu , Masripah  , Tiana Nugraha Angga
Published: February 2023

Tujuan penelitian ini dilakukan adalah untuk menganalisis iklim organisasi sekolah terhadap motivasi berprestasi untuk mewujudkan kinerja pembelajaran agar guru dapat mengoptimalkan kinerjanya, sehingga tercapainya tujuan pendidikan itu dilaksanakan. Guru dapat mengukur sejauh mana kinerjanya dalam melakukan proses pembelajaran terhadap siswa.  Analisis deskriptif dan pendekatan penelitian kuantitatif digunakan dalam penelitian ini. Populasi penelitian ini adalah 50 orang anggota staf pengajar dan pendukung Pondok Pesantren Cipari. Survei, wawancara, studi observasi, dan dokumentasi adalah semua bentuk pengumpulan data. Meskipun analisis statistik model adalah teknik untuk menganalisis data yang digunakan untuk menjawab pertanyaan penelitian (analisis jalur). Angka thitung lebih besar dari nilai ttabel, dengan tingkat signifikansi 0,05 yang ditentukan dari hasil perhitungan analisis data yaitu thitung = 126,1534 > ttabel = 3,1996. Hasil ini menunjukkan bahwa variabel Iklim Organisasi Sekolah (X) berpengaruh terhadap Motivasi Kerja (Y) dan Kinerja Guru, dengan Ho ditolak dan H1 disetujui (Z). Signifikansi hasil pengujian di atas didukung dengan besarnya nilai determinasi (R2YZX) sebesar 0,8916 yang juga menggambarkan besarnya kontribusi iklim organisasi sekolah terhadap motivasi berprestasi untuk mencapai prestasi belajar dan sebesar 89,16%. Variabel lain di luar model berdampak pada sisa 0,1084 atau 10,84%. Motivasi pegawai Madrasah sebesar 31,79% dipengaruhi oleh budaya organisasi. Iklim organisasi di madrasah berdampak positif sebesar 38,07 persen terhadap kinerja guru, sedangkan motivasi kerja berdampak negatif sebesar 27,52 persen.. Menurut temuan penelitian, budaya organisasi di madrasah dan motivasi kerja berpengaruh signifikan terhadap kinerja guru. Dengan demikian, mempromosikan lingkungan kerja yang menyenangkan dan menginspirasi bagi para guru akan membantu meningkatkan kinerja guru. Hal ini menunjukkan bahwa semakin baik lingkungan kerja dan motivasi di sekolah, maka akan semakin berdampak pada kinerja guru.
EVALUATION OF TRENDS IN ONCOLOGICAL CARE FOR KIDNEY CANCER IN KAZAKHSTAN
Authors: Dyakov S. , Telmanova Zh. , Bilalova Z. , Azhetova Zh. , Igissinova G. , Orozbaev S. , Kudaibergenova I. , Igissinov N.
Published: February 2023

Relevance: Worldwide, kidney cancer ranks sixth among the most frequently diagnosed cancers in men and 10th in women, accounting
for 5% and 3% of all cancer diagnoses, respectively. In 2020, IARC reported 431,288 new cases and 179,368 deaths from kidney cancer
worldwide. By 2040, they expect an increase of 40.4% in kidney cancer incidence (605,726 cases) and 59.4% in kidney cancer mortality
(285,906 deaths).
The study aimed to analyze some kidney cancer indicators (incidence, mortality, early diagnosis, neglect, morphological verification)
to evaluate the oncological care in Kazakhstan in 2010-2019.
Methods: A retrospective study using descriptive and analytical methods of biomedical statistics was used as the primary method.
Results: From 2010 to 2019, 10,966 new cases of kidney cancer and 3,866 deaths from this pathology were registered in Kazakhstan.
kidney cancer incidence increased from 5.6±0.2%⁰⁰⁰ (2010) to 6.7±0.2%⁰⁰⁰ in 2019 (p=0.000). Over time, mortality rates from kidney
cancer tended to decrease from 2.6±0.1%⁰⁰⁰ (2010) to 1.9±0.1%⁰⁰⁰ in 2019 (p=0.000). The study reveals a trend: the indicators of early
diagnosis (the share of patients with stage I-II) improved from 50.7% (2010) to 69.1% in 2019, and, accordingly, the balance of neglected
patients decreased significantly with stage III (from 31.2% to 14.6%) and with stage IV (from 18.1% to 16.0%). Morphological verification
indicators for KС improved by 44.7%, from 58.5% and 84.6%, respectively, in 2010 and 2019.
Conclusion: The increase in kidney cancer incidence dictates further study of cause-and-effect relationships with risk factors for developing effective preventive measures and screening programs.
ENDOSCOPIC TREATMENT OF BARRETT’S ESOPHAGUS IN KAZAKHSTAN
Authors: BATYRBEKOV K. , GALIAKBAROVA A.
Published: February 2023

Relevance: Barrett’s esophagus (BE) is a special disease characterized by metaplasia of the flat epithelium of the esophagus.
The main danger of esophageal epithelial metaplasia is the high probability of develop-ing a malignant neoplasm at the site of the lesion – esophageal adenocarcinoma or can-cer of the cardioesophageal zone.
The study aimed to evaluate the clinical effectiveness of new BE endoscopic treat-ment methods for their subsequent implementation in wide practice throughout the Re-public of Kazakhstan.
Methods: This article presents cases of clinical use of argon plasma coagulation of dysplasia lesions less than 2.0 cm in two patients with Barrett’s esophagus and the use of loop resection of dysplasia lesions more than 2.0 cm in three patients with Barrett’s esophagus.
Results: All the presented cases have shown the effectiveness of applied treatment. Control morphological examination showed no signs of BE in the epithelium.
Conclusion: The presented article describes the results of the introduction of endo-scopic BE treatment methods in our clinic and is available for wide implementation throughout Kazakhstan. A widespread introduction of endoscopic treatment of precan-cerous pathology will reduce the incidence of esophageal cancer in the Kazakhstani population.
The Socio-Economic and Administrative Empowerment of Women in Selected Muslim Countries
Authors: Azid Toseef , Altwijry Othman
Published: February 2023

A stereotypical opinion about the role of Muslim women prevails. Most of the current literature presumes that Muslim women are not as efficient as women in the Western world because of religious, social, and institutional norms. This article assesses this opinion and surveys the literature published on the socio-economic and administrative role of Muslim women in different periods of Islamic history, i.e., the early period of Islam, the medieval ages, and the contemporary period. This study argues that Islam has given proper rights to women and appreciated their role in different socio-economic fields. If Muslim women are not participating in socio-economic and administrative activities, it is due to the culture in which they live but not because of religion. After a review of the published literature on the above subject, this study concludes that in different periods of Islamic history women played a significant role in different dimensions of life. Their role in childcare also has a significant positive impact on the family life of Muslim households. Moreover, in Muslim societies, the value of unpaid work is well recognized.