bluuebunny/crossref_metadata_2025 huggingface dataset:
Development of a System to Control Flow of Coolant in Turning Operation
Authors: Maurya Rajesh Kumar , Niranjan M. S. , Maurya Nagendra Kumar , Dwivedi Shashi Prakash
Published: September 2022

Automation of cooling system in machine tools is an effective method for achieving higher productivity and increased tool life. A cooling system is designed to control the operating temperature on the cutting tool tip by circulating coolant through a reservoir built on the top of the machine tool. This arrangement maintains the coolant flow rate as per variation of cutting tool tip temperature sensed by LM-35 temperature sensor which is located 1 cm away (calibrated distance) from the cutting tool tip and whose output voltage is linearly proportional to the temperature. Coolant flow rate is varied in such a manner that the temperature of the cutting tool tip remains within fixed value of temperature. The aim of present work is to develop a cooling control panel system to provide coolant on cutting tool tip in turning operation of mild steel. The coolant flow rate can be increased or decreased as per the variation of sensor temperature during turning of mild steel with high speed steel (HSS) cutting tool at different depth of cut, and spindle speed ,keeping feed rate constant which results in effective cooling of the cutting tool tip. The experiments were carried out with and without use of coolant. It supplies the coolant as per instructions of cooling control panel system which results in saving of coolant as well as power. The mechatronics application of designed cooling control panel system enabled the reduction in cutting tool tip temperature in more robust way as compare to conventional cooling system.
Performance Optimization of Combined Cycle Power Plant Considering Various Operating Parameters
Authors: Kumar Sachin
Published: September 2022

Combined cycle power plants are popular in the thermal engineering field for their higher efficiency as compared to normal cycles such as Rankine and Brayton Cycle. But main disadvantages of the cycle are waste heat rejection and low work output. To overcome these difficulties a heat recovery system is used in the present work to recover waste heat of the Brayton cycle as a steam generator for the Rankine cycle in a combined Gas-Vapor cycle. In the present work, the effect of factors such as “compression ratio”, “inlet air temperature” and “turbine inlet temperature” on cycle efficiency was calculated. It was found that cycle efficiency increases with increase in these factors. It was found that the optimum value of compression ratio is 12-18 for maximum output of combined cycle. Whereas inlet air temperature has adverse effect on cycle efficiency so it should be kept lower while increase in turbine inlet temperature increases the cycle’s work output and hence efficiency. Optimum values of turbine inlet temperature were found in the range of 1600-1700 K
Numerical Simulations and Experimental Studies on the Formability of Drawing Quality Steel in Single Point Incremental Forming
Authors: Yeshiwas Zeradam , Krishniah A.
Published: September 2022

Based on numerical simulation and experimental studies the process parameter optimization on the formability using a 1 mm thickness Drawing Quality Steel(CR2) in Single Point Incremental Forming (SPIF)was studied. The sample shape chosen was the hayperbolic cone and fabricated using different parameter leveles. A model of numeric simulation was developed in ABAQUS explicit and then experimentally verified using a CNC milling machine. The influence of three significant control factors, namely tool radius, feeding rate, and step depth on the formability was studied. Optimization of process parameters was conducted using the L9 Taguchi orthogonal array. For optimal formability, to assess the optimum combination of process parameters, a signal noise (S/N) ratio was used. The percentage contribution of the method parameters to formability was determined by the Study of Variance (ANOVA). The findings of the study indicated that the depth of the step followed by feed rate and tool radius, was the dominant factor influencing formability. Furthermore, a good agreement (<8% error) between the numerical simulation and experimental study was seen. The study based on the Taguchi configuration of the study shows that at a feed rate (A2) 1000 mm/min, with tool radius (B1) 8 mm, and with step depth (C2) 0.8 mm, the optimal conditions for maximum formability were achieved.
Effect of Polyamide-12 Material Compositions on Mechanical Properties and Surface Morphology of SLS 3D Printed Part
Authors: Omar Mohammad Rafi , Abdullah Muhammad Ilman Hakimi Chua , Alkahar Mohd Rizal , Abdullah Rohana , Abdollah Mohd Fadzli , Subramaniam Mahananthan , Ibramsa Rizwana Seeni
Published: September 2022

Despite the fact that many 3D printed products have been developed, there are still issues with the printed product’s physical properties and surface morphology. This study examines the effects of significant Selective Laser Sintering (SLS) 3D printer parameters on the material strength of Polyamide12 (PA-12). A variety of virgin materials, reheat materials, and recycled materials were used for the PA-12 material compositions. The test specimens were prepared at different process parameters and material composition percentages using the SLS 3D printer. The tensile strength, surface roughness, and surface morphology were tested. These samples were tested in accordance with ASTM D638-(IV) for tensile strength and roughness using a 10 mm x 10 mm coated sample prepared for scanning in an electron microscope. The tensile test results showed that the composition of the 100% virgin (CP1) material samples appeared to be stiffer, with a lower plastic deformation at maximum tensile stress (45 MPa) and a smoother surface roughness (10.75µm). Furthermore, the SEM results showed that the specimens were partially melted with a significant amount of PA-12 powder before being sintered and coalesced.
Mechanical Properties of Green and Petroleum based Polyurethane as Grouting Materials
Authors: Mat Hussain Nur Izzah Atirah , Bonnia Noor Najmi , Asli Noor Asnida , Ali Ernie Suzana , Hassan Noor Azlina , Nor Affandi Nor Dalila
Published: September 2022

In this study, polyurethane grouting materials (PUG) were prepared using two different types of polyol which were castor-based polyol (CPUG) and petrochemical-based polyol (PPUG). Four different ratios of polyol (OH) to isocyanate (NCO) were used in this study. The effect of different compositions of Isocyanate on mechanical properties were investigated and compared. The flexural strength, and compression strength shows the increment with the increase of the NCO composition. Optimum flexural strength, flexural modulus, and compression strength obtained at composition of PPUG4 and CPUG4 with the ratio of NCO: OH, 2.6: 1. PPUG gives a higher value of mechanical strength as compared to CPUG, however, results obtained for both types of polyurethane are in the range of industrial PU grouting properties grade. The decrease in cell wall of CPUG and PPUG with the increase of NCO:OH indicating the increment in cell wall interaction resulting higher mechanical properties of PUG.
Primas salariales sectoriales en Argentina
Authors: Schteingart Daniel , Trombetta Martin , Pascuariello Gisella
Published: September 2022

La heterogeneidad salarial en el mercado de trabajo argentino es un tema ampliamente debatido. La inserción productiva de los trabajadores es una importante fuente de diferenciales salariales, que a su vez explica buena parte de la desigualdad en la distribución del ingreso de los hogares. Dicho fenómeno reconoce al menos dos determinantes principales: la considerable heterogeneidad productiva de nuestro país y las diferencias de atributos productivos en la fuerza laboral. En este trabajo se utilizan técnicas de descomposición tradicionales para cuantificar la contribución de cada uno de estos factores, a distintos niveles de desagregación sectorial. Así, mostramos que las primas salariales de cada sector dependen en gran medida de las características observables de su fuerza laboral, aunque después de controlar por dichos atributos queda una proporción considerable de la variación sin explicar. Finalmente, ofrecemos algunas hipótesis acerca de los posibles determinantes de las diferencias salariales entre los sectores productivos del país.
Paisaje en movimiento: valoración y recuperación de paisajes rurales de Milpa Alta. Miradores de la Carretera Federal 113 Xochimilco-Oaxtepec
Authors:   , Blanco Gomez Alan Alberto
Published: September 2022

Currently, Mexico City has peri-urban areas, including the city hall of Milpa Alta. This site is considered as Soil Conservation area with agronomic uses, and it is part of the biological Corridor of Chichinautzin for being a biodiverse area. Milpa Alta has undergone transformations in the territory due to the existence of irregular human settlements. For this reason, it is fundamental to protect the ecological, agricultural and historical areas of rural landscapes, while guaranteeing that these are safeguarded as intangible heritage that provide a wide range of identity values. The objective of this research is the recognition of landscapes in movement through the Carretera Federal 113 Xochimilco - Oaxtepec, in order to improve and protect the rural landscapes of Milpa Alta. For this purpose, we used the three components of the landscape methodology (ecological, polysensory and sociocultural) as well as the description of the routes as awareness instruments to generate a landscape evaluation that focuses on the preservation with proposal of landscape designs. The research findings foreshadowed the landscape master plan for the Carretera Federal 113, also establishing design guidelines and criteria. These addressed elements that provide the highway with outstanding rural landscape values. Finally, design proposals are generated to include three detonating projects for the viewpoints, as well as the linking of each of them through scenic bays in accordance with the needs of the relict landscapes. This proposal intends to generate identity in the rural landscapes through the low-speed route while reactivating the rural environment for its evaluation and conservation.
Recensiones
Authors: Gieseler Greenbaum Dorian , Heilen Stephan , Chronopoulou Eleni
Published: September 2022

Stephan Heilen, Hadriani genitura - Die astrologischen Fragmente des Antigonos von Nikaia. Band 1: Edition und Übersetzung. Band 2: Kommentar. Texte und Kommentare, Band 43, Berlin - Boston, Walter de Gruyter 2015, XI + 1450 pp. [ISBN: 978-3- 11-028847-6; e-ISBN (PDF): 978-3-11-028873-5; e-ISBN (EPUB): 978-3-11-038874-9; ISSN: 0563-3087]. (Dorian Gieseler Greenbaum)

Dorian Gieseler Greenbaum, The Daimon in Hellenistic Astrology. Origins and Influence. Ancient Magic and Divination, vol. 11, Leiden-Boston, Brill, 2016, XXIV+574 pp. [ISBN: 978-90-04-306020-2 (hardback) & 978-90-04-30621-9 (e-book); ISSN: 1566-7952]. (Stephan Heilen)

Celia Sánchez Natalías (ed.), Litterae Magicae. Studies in Honour of Roger S. O. Tomlin. Supplementa MHNH, vol. 2. Zaragoza, Libros Pórtico 2019, 262 pp.[ISBN: 978-84-7956-183-3]. (Eleni Chronopoulou)
SINIF ÖĞRETMENLERİ ve VELİLERİN DESTEK EĞİTİM ODASI UYGULAMALARINA İLİŞKİN GÖRÜŞLERİ
Authors: YILMAZ Gamze , YILMAZ Sevda
Published: September 2022

Bu araştırmada, özel gereksinimli kaynaştırma öğrencilerinin aldığı destek eğitim hizmetlerinden biri olan destek eğitim odası uygulamasına ilişkin sınıf öğretmenleri ve veli görüşlerinin incelenmesi amaçlanmıştır. Araştırma, destek eğitim odası uygulaması yapılan okullarda gerçekleştirilmiş olup, destek eğitim odasında destek eğitimi veren 25 sınıf öğretmeni ve destek eğitim odası uygulamasından yararlanan 25 öğrenci velisinin katılımıyla yürütülmüştür. Araştırma nitel araştırma yöntemlerinden biri olan durum çalışması deseni kapsamında yürütülmüştür. Araştırmada nitel araştırma çalışmalarında kullanılan yarı yapılandırılmış görüşme tekniği kullanılmış, veriler yüz yüze görüşmeler yoluyla toplanmıştır. Araştırma sonucunda, sınıf öğretmenlerinin büyük bir bölümünün görev yaptıkları okulda özel olarak destek eğitim odası olmadığı, öğrencilere en fazla matematik ve Türkçe derslerinden destek eğitim verildiği, öğretmenlerin büyük bölümünün öğretim sürecinde anlatım yöntemini kullandığı ve öğretmenlerin büyük çoğunluğunun mevzuata yeterince hâkim olmadıkları sonucuna varılmıştır.
ETKİLİ PSİKOLOJİK DANIŞMANLARIN ÖZELLİKLERİ
Authors: YILMAZ Olcay , ERGENE Tuncay
Published: September 2022

Bu araştırma ile psikolojik danışmanların mesleki gelişimlerine katkı sağlayabilecek ve bu kavramla bağlantılı olabilecek yetenek, ilgi, başarı, iş doyumu gibi konulardaki özelliklerini ortaya koymak amaçlanmıştır. Çeşitli illerde farklı kurumlarda çalışan 21 psikolojik danışman ile yapılan toplam 24 yarı yapılandırılmış görüşme sonunda nitel verilerin toplanmıştır. Verilerin analizinde gömülü kuram yaklaşımında kullanılan açık kodlama, eksen kodlama ve seçici kodlama aşamaları benimsenmiştr. Ham verilerin kodlama işleminden toplam 638 kod elde edilmiş, kavramsal etiketleme sonucunda belirlenen 113 kavramın incelenmesi sonucunda da bu kavramlara ilişkin temalar belirlenmiştir. Bulgular psikolojik danışmanların sosyal ve araştırmacılıkla ilgili özellik ve yetenekleri dışında girişimci kişilik tiplerine özgü becerilere de sahip olması gerektiğini, ayrıca hızlı toplumsal değişimlere ayak uydurma, psikolojik danışmada teknoloji ve internetin kullanımı, göç ve terörün beraberinde değişen ve ihtiyaç beliren bireylerle çalışma becerisi gibi konuların önemini ortaya koymuştur. Yine psikolojik danışmanların geleneksel bakış açısının ötesinde ilgi alanlarına sahip olmaları ve beceriler edinmelerinin önemi vurgulanmıştır. Ayrıca diğer tüm temalarla da ilişkili bir biçimde özellikle iş doyumunun üzerinde önemle durulmuştur.
BATI MÜZİĞİ TEORİ VE UYGULAMASI DERSİNDE İŞBİRLİKLİ ÖĞRENME YÖNTEMİNİN ETKİLİLİĞİ
Authors: ŞİRİN Cengizhan , DENİZ Jale
Published: September 2022

Araştırmada, Batı Müziği Teori ve Uygulaması dersinde kullanılan işbirlikli öğrenme yöntemlerinden öğrenci takımları-başarı bölümleri tekniğinin işleyişi, ders kazanımlarının gerçekleşme durumu ve bu işbirlikli öğrenme sürecine yönelik öğrencilerin görüşlerinin belirlenmesi amaçlanmıştır. Araştırma, 2019-2020 eğitim-öğretim yılı güz döneminde Trakya Üniversitesi Müzik Öğretmenliği Programındaki birinci sınıflardan 36 öğrenci ile yapılmıştır.

Araştırmada nitel araştırma yöntemlerinden birisi olan eylem araştırması deseni kullanılmıştır. Veri toplama araçları olarak görüşme formu, öz değerlendirme formu, çalışma yaprakları, araştırmacı gözlem formu ve uygulama öncesiyle ünite sonlarında yapılan sınavlar kullanılmıştır. Dersler yapılandırmacı öğrenme yaklaşımındaki 5E öğretim modeline göre tasarlanmıştır.

Araştırma sonucunda, Batı Müziği Teori ve Uygulaması dersinde, işbirlikli öğrenme yöntemindeki öğrenci takımları-başarı bölümleri tekniği başarılı bir şekilde işlemiş, öğrenciler ders kazanımlarını çoğunlukla gerçekleştirmişlerdir. Ayrıca öğrenci görüşlerinden, öğrencilerin işbirlikli öğrenme ilkelerinden olan olumlu bağımlılık geliştirdikleri, kendilerinin ve arkadaşlarının öğrenmelerine yönelik sorumluluk aldıkları, aralarındaki iletişimi geliştirdikleri, öğrenmelerine nelerin katkı sağladığını belirledikleri ve değerlendirme yaptıkları anlaşılmaktadır.
ZİHİNSEL YETERSİZLİKTEN ETKİLENMİŞ BİR ÖĞRENCİYE İKNA EDİCİ METİN YAZMA STRATEJİSİ ÖĞRETİMİNİN ETKİLİLİĞİ
Authors: GÜLER BÜLBÜL Özgül
Published: September 2022

Bu araştırmanın amacı “Seç-Düzenle-Yaz ve İKNA et” stratejisinin hafif derecede zihinsel yetersizlikten etkilenmiş bir öğrencinin ikna edici metin yazma becerisini geliştirmedeki etkililiğini belirlemektir. Bu araştırma vaka çalışması olarak gerçekleştirilmiştir. Katılımcı, 11 yaşında beşinci sınıfa devam eden hafif derecede zihinsel yetersizlikten etkilenmiş bir kız öğrencidir. Araştırmada kendini düzenleme stratejilerini geliştirme (KDSG) modeli ile kullanılan POW+TREE ikna edici metin yazma stratejisi Türkçeye “Seç-Düzenle-Yaz ve İKNA et” adı ile uyarlanmıştır. Uyarlanan bu strateji öğrenciye KDSG modeli öğretim aşamalarına göre öğretilmiştir. Çalışma sonunda öğrencinin planlama süresi, toplam yazma süresi, metin uzunluğu, metin ögeleri sayısı ve metin kalitesi başlama düzeyine göre önemli oranda artmış ve öğrenci bu kazanımlarını öğretim bittikten 1-8 hafta sonra da sürdürmüştür. Araştırma sonucunda hafif derecede zihinsel yetersizlikten etkilenmiş bir öğrencinin ikna edici metin yazma becerisini geliştirmede ve edindiği beceriyi sürdürmede öğretim aşamaları KDSG modeline göre düzenlenen “Seç-Düzenle-Yaz ve İKNA et” stratejisinin etkili olduğu belirlenmiştir. Öğrencinin planlama stratejisini etkili kullanmasının sonucu olarak yazma süresinde ve metin ögelerinde artış gerçekleştirdiği düşünülmektedir. Metin ögelerindeki artış metin kalitesini de olumlu yönde etkilemiştir. Araştırmadan elde edilen bulgular incelendiğinde, öğrencinin yazdığı metinlerin ögeleri, yazma süreleri ve metin uzunlukları arasında doğrusal bir ilişki olmadığı görülmüştür.
Acute effect of edge-to-edge repair of mitral regurgitation on left heart mechanics and health status
Authors: Ro Richard , Prandi Francesca R. , Zaid Syed , Anastasius Malcolm O. , Tang Gilbert H.L. , Seetharam Karthik , Argulian Edgar , Massaro Gianluca , Sharma Samin , Kini Annapoorna , Lerakis Stamatios
Published: September 2022

Aims

Examine the impact of acute changes in left heart strain and volumes with percutaneous edge-to-edge MitraClip repair on improvement in health status assessed using Kansas City Cardiomyopathy Questionnaire-12 (KCCQ-12) score.

Methods

Changes in left atrial strain, left ventricular (LV) global longitudinal strain (LVGLS), LV end-systolic volume (LVESV), and end-diastolic volume (LVEDV) were evaluated in 50 patients undergoing MitraClip repair for symptomatic primary mitral regurgitation (PMR) and secondary mitral regurgitation (SMR) on transthoracic echocardiography before and 1 month after MitraClip. Multivariable regression was used to evaluate changes in left heart strain and volumes as predictors of change in KCCQ-12 scores, adjusting for baseline clinical and echocardiographic characteristics.

Results

Both PMR and SMR patients had significant increase in LVGLS and reduction in LVEDV and LVESV (P < 0.05) after MitraClip, reduction trend in left atrial conduit strain (PMR P = 0.053; SMR P = 0.12) but no significant change in LV ejection fraction. KCCQ-12 score improved significantly in both PMR (P < 0.001) and SMR cohorts (P < 0.001). Higher delta KCCQ-12 tertiles were associated with greater reduction in LVEDV (P = 0.022) after MitraClip. On multiple regression analysis, lower preprocedural Society of Thoracic Surgeons for Mitral Valve Replacement and KCCQ-12 score, and greater reduction in LVESV and left atrial strain conduit phase were associated with KCCQ-12 score improvement (P < 0.001).

Conclusion

There is a significant increase in LVGLS and reduction in LVEDV, LVESV and left atrial strain conduit after edge-to-edge MitraClip repair in both PMR and SMR. Lower preprocedural Society of Thoracic Surgeons for Mitral Valve Replacement and KCCQ-12 score, and greater reduction in LVESV and left atrial conduit strain were associated with KCCQ-12 score improvement after MitraClip. Further studies are warranted to understand the mechanism and significance of our findings.
A genome-wide association study to investigate genetic loci associated with primary glaucoma in American Cocker Spaniels
Authors: Gomes Filipe Espinheira , Casanova Maria Isabel , Mouttham Lara , Bannasch Danika L. , Park Sangwan , Kim Soohyun , Young Laura J. , Daley Nicole L. , Thomasy Sara M. , Castelhano Marta G. , Ledbetter Eric C. , Holmberg Bradford , Boyd Ryan , Van Der Woerdt Alexandra , McDonald Jessica , Hayward Jessica J.
Published: September 2022

OBJECTIVE

To identify genetic associations with primary glaucoma (PG) in American Cocker Spaniels using a genome-wide association study (GWAS).

ANIMALS

A nationwide ambidirectional case–control cohort study was performed in American Cocker Spaniels that had an ophthalmic examination performed by a veterinarian. Ninety-four dogs with PG (cases) and 111 dogs without glaucoma (controls) met phenotypic criteria and had a blood sample collected after receiving informed owner consent.

PROCEDURES

Genomic DNA was extracted from whole blood samples and genotyped (CanineHD BeadChip, Illumina Inc). A case–control GWAS using a linear mixed model was performed, and 3 significance thresholds were calculated (1) using a Bonferroni correction on all single nucleotide polymorphisms (SNPs) included in the GWAS, (2) using a Bonferroni correction on only the unlinked SNPs from a pruned data set, and (3) using 10,000 random phenotype permutations.

RESULTS

Following genotype data quality control, 89 cases and 93 controls were included in the GWAS. We identified an association on canine chromosome (CFA10); however, it did not reach statistical significance. Potential candidate genes within the surrounding linkage disequilibrium interval include coiled-coil domain containing 85A (CCDC85A) and extracellular growth factor containing fibulin extracellular matrix protein 1 (EFEMP1).

CLINICAL RELEVANCE

Primary glaucoma in the American Cocker Spaniel is a complex heterogeneous disease that may be influenced by a locus on CFA10. The candidate genes CCDC85A and EFEMP1 within the identified linkage disequilibrium interval have been shown to be involved in human open-angle glaucoma.
Financial customer classification by combined model
Authors: Lin Cong , Zheng Jinju
Published: September 2022

This paper explores the pros and cons of different algorithm models on the same selection problem, and then uses the combined prediction theory to obtain a new combined prediction model to explore its prediction accuracy. The actual problem to be solved is to help financial institutions to scientifically classify customers who choose financial products. We select the bank data set in the UCI database, which is derived from the survey data of a customer conducted by a financial institution in Portugal for a wealth management product. Decision tree C5.0 algorithm, naive Bayes classification algorithm and binary logit model are individually used to carry out a single model of empirical research on financial product customer classification. Through the empirical analysis of the five combination models, it is concluded that in the model that uses the least squares weighting method to determine the weight, the weight appears negative, which does not conform to the actual situation. The model that is based on the least squares weighting method and the model that is based on the simple weighting method are excluded. In contrast, the arithmetic mean weighted model is better than the reciprocal variance weighted model and the reciprocal mean square model. The accuracy reaches 89.91%, which is 0.43% higher than the accuracy of a single model. It can be concluded that the model that is based on the arithmetic average weighting is a better combination forecasting model.
Application of regression function model based on panel data in financial risk management of bank resource allocation
Authors: Yang Cheng , Hasan Hafnida
Published: September 2022

This paper studies the financial risk management of resource allocation of listed commercial banks in my country, starting from the fundamental influence of lender credit rating in the internal rating system of commercial banks, and analyzes the influence of a large number of subjective factors contained in the bank’s credit rating system on the rating effect. Influence. A sort-response panel regression function model with random effects (including random intercept terms and random coefficients) is proposed, and the rationality of the existing bank credit rating system is tested and analyzed. The experimental results show that the model’s prediction accuracy rate is 48.27%, and the percentage of prediction level error within two levels reaches 86.8%. The application of this model can find the redundant indicators of the existing system, which are highly fitted with the actual situation and can achieve quite ideal forecasting results, and provide a forecasting reference for the weight setting, which provides a basis for the revision of the bank’s credit rating system.
A Hybrid Computational Intelligence Method of Newton's Method and Genetic Algorithm for Solving Compatible Nonlinear Equations
Authors: Wang Yunfeng , Wang Haocheng , Chen Pengrui , Zhang Xue , Ma Guanning , Yuan Bintao , Al dmour Ayman
Published: September 2022

In order to solve the system of compatible nonlinear equations, the author proposes a hybrid computational intelligence method of Newton's method and genetic algorithm. First, the Quasi-Newton Methods (QN) method is given. Aiming at the local convergence of the algorithm, it is easy to cause the solution to fail. By embedding the QN operator in the Genetic Algorithm (GA) and defining the appropriate fitness, thus, a hybrid computational intelligence algorithm of CNLE is obtained that combines the advantages of GA and QN method, which has both faster convergence and higher probability of solving. Experimental results show that: The value of the selection probability pn
of the QN operator also directly affects the solution efficiency. Generally speaking, for strong nonlinear CNLE composed of multimodal functions, pn
can be larger; For weakly nonlinear CNLE composed of functions with fewer extreme points and stronger monotonicity, pn
can be smaller. It is demonstrated that the computational results show that this method significantly outperforms the GA and QN methods.
Climate change and its impact on urban agriculture in Sub-Saharan Africa: A literature review
Authors: Chari Felix , Ngcamu Bethuel Sibongiseni
Published: September 2022

Recent surveys have shown that the global urban population is increasing at an accelerated rate. As a result, the associated increased demand for food items has pushed up the overall cost of living for urban dwellers. To mitigate this increased cost of living urban dwellers increasingly find solace in agricultural activities. This surge in urban agricultural activities comes at a time characterized by long term shifts in temperatures, rainfall patterns and general weather conditions. While many researchers have presented evidence of increased urban agricultural activities, there remains a paucity of integrated literature that summarizes climate change issues on urban agriculture. This research reviewed literature on the influence of climate change on urban agricultural operations in sub-Saharan African cities. A narrative review approach was employed to summarize and synthesize findings and make recommendations for future research. The review employed the key terms ‘urban farming’, ‘urban agriculture’, ‘climate change’, ‘peri-urban agriculture’, and ‘urban agricultural production’ to search relevant literature indexed in databases: Scopus, Directory of Open Access Journals, Web of Science, Google Scholar and Academic Search (EBSCO). The choice of these keywords was informed by the authors’ specialist understanding of urban agriculture and climate change. There is consensus among the reviewed literature that climate change affects urban agriculture from production to processing, storage, and distribution. This study also established that the extent and magnitude of climate change impacts differ from one region to another. Therefore, adaptation and mitigation strategies ought to be context specific and not universally applicable. This is important because Africa is a climatologically diverse continent so that the impact of climate change faced by one sub-Saharan African city may be different from that for other cities in other regions. A framework that simplifies the effects of climate change on urban agriculture-dependent households in sub-Saharan Africa was produced. More specifically, this framework is recommended to those urban farmers and policymakers that are involved in mitigating the consequences of climate change as well as achieving food and nutritional security. The authors also recommend this framework for unpacking the knowledge of the influence of climate change on urban agriculture as well as exposing directions for future research. This work adds to the growing body of knowledge in the domain of climate change on urban agriculture-dependent households.
Relationship between densification and NDVI loss. A study using the Google Earth Engine at local scale
Authors: Celemin Juan Pablo , Arias Maria Eugenia
Published: September 2022

Latin American cities are amongst those with the highest rates of urbanization in the world. This process has involved their territorial expansion as well as the densification of some of its neighborhoods, in mainly central areas. This is the case of the city of Santiago del Estero (Argentina) that increased its population by 33% between 1991 and 2010 with the consequent transformations of the local space. In this context, this study analyzes the evolution of vegetated areas and densification of the central area of the city using satellite data. We analyzed two indices: normalized difference vegetation index (NDVI) and Urban Index (UI) time-series data, for the 1992–2011 year period, using the Google Earth Engine for processing Landsat 5 TM images. We found that the NDVI showed a decreasing trend in the timelapse under consideration, while the UI performance registered the opposite trend. The mean NDVI decreased from 0.161 (1992) to 0.103 (2011) while the UI mean increased from 0.003 to 0.036 in the same timelapse. Further, the NDVI has a strong negative correlation with UI (R-squared = -0.862). The results are consistent with the census information that recorded an important demographic and housing growth for the entire city in this period.
Observed climate trends, perceived impacts and community adaptation practices in Côte d’Ivoire
Authors: Kouassi Jean-Luc , Wandan Narcisse , Mbow Cheikh
Published: September 2022

Climate change is a serious threat to local communities in West Africa. This study evaluated climatic trends and the perceptions of farmers to climate change in central Côte d’Ivoire. We surveyed 259 households across three agro-ecological zones. The knowledge of farmers about climate change was compared to observed trends of various climatic parameters from meteorological records (1973-2016). Results from trend analysis and descriptive analysis showed that the minimum, maximum and mean temperatures and rainfall showed a significant upward trend in all ecoregions. The average temperature and amount of rainfall increased by 3.2% (0.89°C) and 166.58% (645.5 mm) respectively over the 44 years. Local farmers perceived an increasing trend in temperature (all respondents) and a decreasing trend in rainfall (91.51%). Most of the respondents identified deforestation (76.83%), natural climate variation (50.97%) and wildfires (31.27%) as the main causes of these climatic disturbances, which induced plant dieback (92.66%), poor crop growth (59.46%) and crop loss (20.46%). The impacts on people and their assets encompassed a decrease in household income (63.71%), demolition of roofs (44..4%) and walls (43.91%) of houses, the scarcity of water points (39.38%) and the emergence of new diseases (30.89%). These climatic disturbances resulted in specific endogenous on-farm and off-farm strategies to adapt to the impacts of observed changes on their livelihoods.
Anthropogenic and natural factors influencing African World Heritage sites
Authors: Dulias Renata
Published: September 2022

The article presents anthropogenic and natural factors influencing African World Heritage sites. The analysis was based on the data contained in the Conservation Outlook Assessments for 2020, including all sites on the African continent where natural values are protected, i.e., both natural (38) and mixed sites – natural and cultural (6). The assessment of current and potential threats and effectiveness of protection and management included 57 items, each of which was analyzed concerning all African properties. The results show that the African World Heritage sites are subject to various pressures from human activity and natural factors. The most common current threat is hunting and trapping, found in 33 sites. The spread of invasive (alien) species in 21 areas is second. Common threats (reported in 15-17 sites) include livestock farming and grazing, logging and wood collecting, fires, tourism, mining, and crops. The most frequently mentioned potential threats are mining, oil/gas exploration, construction of dams, and various effects of climate change – droughts, flooding, temperature extremes, and habitat shifting. The effectiveness of protection and management is not satisfactory. There are serious concerns related to law enforcement, sustainable finance, staff capacity, training, and development. Some concerns are directed to monitoring, tourism and visitation management, boundaries, and effectiveness of the management system. Results of a review show that, of all natural and mixed World Heritage sites in Africa for three areas, the conservation outlook is assessed as good, 15 – good with some concerns, 14 – significant concerns, and 12 – critical. In 2020, as many as 11 “in danger” sites were listed in Africa. At that time, there were 17 sites around the World in danger, i.e. as many as 70% of them were in Africa.
Exploring the limitations of GDP per capita as an indicator of economic development: a cross-country perspective
Authors: Dědeček Radek , Dudzich Viktar
Published: September 2022

In this paper, we explore the drawbacks of GDP per capita in purchasing power parity as an indicator of economic development and well-being and evaluate the factors which diminish its ability to represent the level of life. Firstly, we theoretically outline the issues that might be undermining the suitability of GDP per capita as a measure of well-being, and debate other development indicators. Subsequently, we confront GDP per capita with the most well-known development indicator – the Human Development Index HDI – and calculate the deviations between these two indicators for a panel of 141 countries. To empirically evaluate the potential limitations of GDP in measuring development, we regress the computed deviations between development and GDP on an array of economic, social, and political variables employing a heterogeneous panel dataset and robust fixed effects estimators. The results reveal that countries with higher income inequality and level of economic freedom are characterised by lower development than implied by their GDP per capita. Contrarily, the size of the shadow economy is negatively linked to the deviations of HDI from GDP. Certain sociocultural, geographic, and ecological factors, such as higher fertility rates, cold climate, and the depletion of natural resources, are prevalent among nations ranking higher in GDP per capita than in development.
The Value of Prestige on the Father Figure in the Family Acehnese people
Authors: Munirah *Zaitun , Malihah Elly , Ruyadi Yadi
Published: September 2022

In Acehnese society itself, there is a system of prestige given to the head of the family at home, namely the father figure. The form of prestige is in the form of appreciation and privilege of treatment to the father. This study aims to explore the socio-cultural values embedded in Acehnese society, namely the value of prestige which is closely related to the patrilineal system. Although it is often not realized, the existence of these values is real. By using a qualitative approach in the form of a literature review study, namely a literature study that uses references from other research journals, theses, theses, books related to the prestige value of the father figure in the family. This study also relates the focus of the study to a feminist view that basically the main essence desired by women is the creation of harmony, dignity, and freedom in managing life, both from within and from outside the home. Meanwhile, in Aceh, the privileged access or advantages that women get is always related to marital status. They will get their rights if they get married, and have children. However, it is still not comparable to that obtained by the adam in the family. In conclusion, the prestige value is still embedded in the Acehnese family, but the practice is no longer the same as before
Empowerment of Community Broad-Base Education Center for Arabic-Jawi Study at Deah Nurul Yaqin
Authors: Abdullah *Nuriman , Rahmah Syarifah
Published: September 2022

Broad-based reinforcement community education in the process of managing Arabic-Jawi recitation institutions through mapping problems encountered on deah Nurul Yaqin, Darul Ihsan District, East Aceh Regency. The development of the study center aims to strengthen managerial and administrative governance in the Islamic religious learning process. Participatory action research (PAR) has been used to deal with related issues. The mentoring program has added to both managerial and administrative governance measurable and structured. Assistance and strengthening of administrative and managerial governance have had an impact increase the capacity of Arabic-Jawi learning. Another positive impact of mentoring has increased managerial ability, learning process for teachers, and administrative management making hall Arabic-Jawi recitation competitive in system learning, managerial and governance administration.
Student Motivation to Follow the Student Creativity Program
Authors: Ismail *Ismail , Putri Ridiya Samita , Zulfadhli Zulfadhli , Mustofa Achmad , Musfiana Musfiana , Hadiyani Rahmilia
Published: September 2022

This study aims to determine (1) the factors that cause USK FKIP students to be less motivated to participate in PKM and (2) how to increase the motivation of USK FKIP students to participate in PKM. This article uses a qualitative approach with a descriptive type of research. The sampling technique used was quota sampling and data collection techniques in the form of observation, interviews, documentation and data triangulation. The data analysis technique used is data reduction, data presentation, and drawing conclusions. The findings in this study could be presented as follows: The factors causing students to be less motivated to participate in PKM activities are (1) an intrinsic factors (intelligence 25%, attention 19%, interest 14%, motive 12%, maturity 13% and fatigue 17%), (2) the extrinsic factors (class schedules 20%, curriculum 24%, relations between students and students 28%, relations between students and lecturers 28%). Efforts made to increase students motivation to participate in PKM activities are: (1) efforts made by the Vice Dean for student affairs, which consist of intrinsic factors (attention 37.5% and motivation 62.5%) and 100% factors of extrinsic is student-teacher relationship factor (2) efforts made by the study program are intrinsic factors consisting of 22% attention, 37% motivation and 41% readiness and extrinsic factors consist of 27% curriculum and 73% relationship between lecturers and students. The effort expected by students consists of intrinsic factors (intelligence 34% and attention 66%), while extrinsic factors (curriculum 16%, relationships between students and students 40% and relationships between lecturers and students 44%).
Chemical Product Design of a Sports Performance T-shirt using Eucalyptus Globulus Essential Oil
Authors: Lora Eva , Vieira Flávio , Costa Inês , Teixeira Helena , Albano Matilde , Manrique Yaidelin
Published: September 2022

This project consists of developing a Eucalyptus-based product. The selected product is a sports performance T-shirt impregnated with eucalyptus essential oil. A Chemical Product Design approach was used to translate customer needs into the new product. This procedure is divided into four stages: Needs, Ideas, Selection and Manufacture. This product’s target audience is athletics and hiking enthusiasts. Its main purpose is to valorize Eucalyptus Globulus essential oil’s unique properties, providing fresh and decongestion sensations to the user. Finally, an economic analysis was performed to evaluate the product viability.
Jellyapic
Authors: Aguillar David , Magalhães Juliana , Sousa Marta , Rêgo Marta , Ribeiro Vasco , Freitas Ana Filipa
Published: September 2022

This work consists of developing a strawberry plant-based product, an anti-glycemic gelatin. The selected product is a vegan origin gelatin containing sinapic acid, extracted from the strawberry leaves. A Chemical Product Design (CPD) approach was used to satisfy the customers' needs with a new product. The main purpose of this gelatin is to value the strawberry leaves' wide variety of health properties, mainly its anti-glycemic property. After the definition of the production process, it was concluded that using the total amount of about 133 tons of dry strawberry leaves available per year in Portugal, it was possible to produce up to 26 million gelatin packets yearly. Finally, an economic analysis was performed to evaluate the product viability, resulting in profits from product sales from the third year forward. The net present value (NPV) and the internal rate of return (IRR) were also calculated, resulting in about 15 million euros and 30 %, respectively.
Xylitol
Authors: Carvalho Filipa , Duarte Francisca , Pedreiras Laura , Posada Vanessa , Brito Margarida
Published: September 2022

The main purpose of this project was the eco-valorisation of the tomato plant residues. The chemical product design method was used to select the best idea based on 4 steps: needs, ideas, selection, and manufacturing.Liquid xylitol is here proposed for the valorisation of tomato plant residues, which is an alternative sweetener with a lower glycemic index that can be produced from the hemicellulose found in leaves and stems. Its production would require an alkaline extraction with sodium hydroxide, enzymatic hydrolyses using endo-1,4-β-xylanase, and yeast fermentation with Candida tropicalis.Liquid sweetener with 72% xylitol and other components (D-glucose, D-mannose, D-galactose, L-arabinose, and lignin), commercialised as NITS - Natural Incredible Tomato Sweetener, could be sold for 2.25 €·L-1 for companies and the same price per bottle of 500 mL for individual consumption.
Pemetaan Perubahan Penggunaan Lahan Pesisir Bali Tenggara dengan Menggunakan Citra Landsat
Authors: Wicaksana Karang I Made Mahendra , Hendrawan I Gede , Nurweda I Dewe Nyoman
Published: September 2022

Bali is an island that has abundant cultural customs; this causes the island Bali to become a favorite tourist destination in Indonesia. Tourism development in Bali is accused of being the cause of the destruction of the agricultural sector due to the large number of agricultural land that has been converted into built-up land. Southeast Bali is one of the areas experiencing land changes in its coastal areas; this can be seen in the reduction in agricultural land in the area. This research uses the remote sensing method to conduct research in the Southeast Bali region. The remote sensing method is effective because it can cover a broad research area, and data can be accessed free of charge by the United States Geological Survey. The images used in this study are Landsat 5 and 8 satellite images. The method used in this study is the maximum likelihood method, which is carried out to identify and classify land use classes. The results show that the building class increases dominant land use from 1995 to 2021, then the most significant land-use change is found in the vegetation area. The results obtained in this study indicate that the accuracy of Landsat 5 and 8 is still quite good. This can be seen from the overall accuracy, which is 92%.
ПІДГОТОВКА ІНЖЕНЕРНО-ТЕХНІЧНИХ ПРАЦІВНИКІВ У ЗАКЛАДАХ ПРОФЕСІЙНОЇ ОСВІТИ НІМЕЦЬКИХ ОКУПАЦІЙНИХ ЗОН УКРАЇНИ 1941 – 1944 рр.
Authors: ГОНЧАРЕНКО Олексій , ІВАНЕНКО Аліна
Published: September 2022

Мета пропонованої розвідки полягає у розкритті практично невідомої сторінки професійної підготовки інженерно-технічних кадрів у період нацистської окупації України в 1941 – 1944 рр. Однією із суттєвих прогалин сучасної історичної науки є відсутність комплексних досліджень, предметом яких стало б вивчення досвіду керівників німецьких окупаційних зон України у сфері підготовки фахівців інженерно-технічного профілю. Наукова новизна  полягає у тому, що дослідження заповнює наявну лакуну наукового пізнання, сприяє кращому розумінню процесів у сфері професійної освіти, які відбувалися на загарбаній Німеччиною території України, реконструює спроби підготовки кваліфікованих кадрів в екстремальних умовах окупаційного режиму, відтворює питання навчально-методичного забезпечення навчання майбутніх фахівців інженерно-технічного профілю. Для досягнення мети публікації використовувалися такі методи: аналіз, синтез, систематизація, порівняння та узагальнення, ретроспективні, логічні і системно-структурні методи, методи відбору, систематизації та періодизації історичних фактів, пошуково-бібліографічі методи, методи періодизації, узагальнення виявлених та оброблених матеріалів. Висновок. У всіх зонах німецької окупації України адміністрації організували професійне навчання місцевої молоді. Водночас домінуючими організаційними формами навчальних закладів професійно-технічної підготовки в МЗО та РКУ були колишні радянські заклади, технікуми та коледжі. Лише в Дніпропетровську відновили роботу єдиної окупаційної зони України в університеті. РКУ, німецька адміністрація не звертала уваги і не протидіяла впровадженню в навчальний процес предметів загального рівня, навіть історії України, хоча загалом це “не вітається”. Таким чином, модель підготовки інженерних кадрів у цих зонах занять передбачала формування спеціаліста ширшого, а не вузького, як у ДГ профілю.
Apply Machine Learning to Predict Saltwater Intrusion in the Ham Luong River, Ben Tre Province
Authors: Hoai Pham Ngoc , Quoc Pham Bao , Thanh Thai Tran
Published: September 2022

Saltwater intrusion is a major problem particularly in the Mekong Delta, Việt Nam. In order to better manage the salinity problem, it is important to be able to predict the saltwater intrusion in rivers. The objective of this research is to apply several machine learning algorithms, including Multiple Linear Regression (MLR), Random Forest Regression (RFR), Artificial Neural Networks (ANN) for predicting the saltwater intrusion in Ham Luong River, Ben Tre Province. The input data is is composed of 207 weekly saltwater intrusion data points from 2012 to 2020. Yearly salinity was measured during the 23 weeks of the dry season, from January to June. The Nash - Sutcliffe efficiency coefficient (NSE), Root Mean Squared Error (RMSE), and Mean Absolute Error (MAE) are used to evaluate the performances of machine learning algorithms. The research results indicated that the ANN model achieved a high performance for salinity forecasting with NSE = 0.907, RMSE = 0.11, MAE = 0.08 for training period, NSE = 0.842, RMSE = 1.16, MAE = 0.11 for testing period. The findings of this study suggest that the ANN algorithm is a promising tool to forecast salinity in Ham Luong River.