bluuebunny/crossref_metadata_2025 huggingface dataset:
Heamatological parameters of one hump camels (camelusdromedarius) in North Western Nigeria
Authors: Ibrahim H. M. , Bulama I. , Bashir S. , Abubakar S. I. , Ali W.
Published: December 2021

Camels are regarded as the ship of the desert, being used for transporting humans and their goods. They are also raised for milk, meat, hides and wool. Normal haematological values are important as disease diagnostic aid as they are vital indicator of the animals’ health status. Haematological parameters of one- humped camels (Camelusdromedarius) were determined in this study. 60 one- humped camels (Camelusdromedarius) were selected in sokoto and their blood samples were analyze using standard procedures for haematological parameters. [Packed cell volume (PCV), red blood cells (RBC), haemoglobin (Hb),white blood cells (WBC), neutrophils, eosinophils, Basophils, monocyte, lymphocyte, mean corpuscular volume (MCV), mean corpuscular haemoglobin (MCH), and mean corpuscular haemoglobin concentration (MCHC)].For all the parameters, only neutrophils and MCV values showed significant variation between sexes with male camels having higher values than females. There is variation in the range values for all the parameters between sexes except Basophils, Monocyte and Lymphocyte. Based on the results of this study, the values were similar in both sex except in neutrophils and mean corpuscular volume indicating insignificant effect of sex on most of the haematological parameters.
Heavy metals in contaminated soil: source, accumulation, health risk and remediation process
Authors: Abdullahi A. , Lawal M. A. , Salisu A. M.
Published: December 2021

Heavy metals contamination of soil is an issue of global concern that ultimately results in toxicity and diseases in humans and animals through consumption of food crops from contaminated soil. The toxic effects of these metals, even though they do not have any biological role, remain present in some or the other form harmful for the human body and its proper functioning. Heavy metals in the soil refers to some significant heavy metals of biological toxicity, including Cobalt (Co), Cadmium (Cd), Lead (Pb), Chromium (Cr), and Arsenic (As) etc. With the development of the global economy, both type and content of heavy metals in the soil caused by indiscriminate use for human purposes has altered their geochemical cycles and biochemical balance. There are many known sources of harmful metals, including the earth, which releases them into food, air, and water, and anthropogenic activities, such as the application of fertilizer in agriculture, the use of pesticides and herbicides, and irrigation. Other sources are automobile emissions, paints, cigarette smoking, industries, and sewage and waste disposal. This review gives details about some heavy metals their toxicity, bioaccumulation, biodegradation, mobility and solubility in contaminated soil along with their health effects. Remediation of heavy metal in contaminated soils is necessary to reduce the associated risks, make the available soil safe for agricultural production, enhance food security and scale down land tenure problems arising from changes in the land use pattern the review recommends regular monitoring of heavy metals in soil, vegetables and foodstuffs to prevent excessive accrual in food chain.
Intracranial compartment volumes and their distribution among clinically diagnosed patients with normal pressure hydrocephalus and brain atrophy in a Nigerian population
Authors: Mohammed A. , Anthony C. U.
Published: December 2021

Normal pressure hydrocephalus is a form of non-obstructive hydrocephalus characterized by the triad of symptoms. These symptoms are typical or atypical. Because of its potential reversibility, researchers have paid attention to its diagnosis and in differentiating it with other forms of dementia such as brain atrophy. To determine the intracranial compartment volumes and their differences among patients with NPH and Brain Atrophy (BA). This was a cross-sectional study involving consenting patients diagnosed with NPH and BA who were referred for routine brain CT. Medical conditions known to influence intracranial volume were excluded. Age -matched normal control were clinically and radiologically confirmednormal and were also recruited. Intracranial volumes and CSF distribution determination was based on Cavalieri test point computation principle. Test point summation was on a locally developed software for this purpose. Overall, the values of BA recorded higher mean values for most of the intracranial compartment volumes. Intraventricular volume was consistently higher in NPH groups. Statistical difference exists among intraventricular and total intracranial CSF volume across patients with BA, NPH and control. A post hoc test revealed control-NPH comparison across these variables. Control-BA comparison was evident in total intracranial CSF volume only. Higher mean values of intracranialcompartment volumes were observed in patients with BA than among patients with NPH and their control. Anthropometric indices did not show any difference between patients with BA, NPH and their control. These indices can be used as basis in objectively differentiating NPH from BA.
The micronutrient status of some soil supporting oil palm plantationin Nifor, Benin City, Benin
Authors: Ogeh J.S. , Imogie A.E. , Maduakor C.S.
Published: December 2021

This study was conducted to assess the micronutrient status of soils under three different management practices at the Nigerian Institute for Oil Palm Research (NIFOR), Benin City, Edo State, Nigeria. Soil samples were collected from three different fields Research (NIFOR), Benin City, Edo with different management practices. The samples were air dried and analyzed for Fe, Zn, Cu, and Mn contents using standard method. Data was subjected to ANOVA and correlation studies. Result showed that soil micronutrient status was generally low as revealed by their estimated levels of availability: field 53 (Mn = 0.0333; Zn = 3.723; Cu = 2.04; Fe = 6.4), field 56 (Mn = 0.0367; Zn = 3.737; Cu = 1.12; Fe = 7.0939), field 71 (Mn = 0.0167; Zn = 3.860; Cu = 2.89; Fe = 7.243). Fe and Zn were above critical level for the 3 fields. Mn was below the critical level for the 3 fields and was significantly higher in field 56 (Orlu and Kulfo series) (p≤ 0.05). They were all similar. Fe was significantly different in field 53 (Kulfo and Alagba series) but similar in fields 56 and 71 (p≤ 0.05). Cu was significantly different in the 3 fields tested with field 71 (Orlu and Alagba series) higher than the critical level. Correlation studies showed that pH had a positive and significant correlation with Fe and Zn as observed in fields 71 and 56 (r = 0.9934, P≤ 0.05) and (r = 0.9997, P ≤ 0.05) respectively. Cu was the only micronutrient that has correlation with clay on each of the fields: 53, 56 and 71 (r = 0.9929, P≤0.05) (r = 0.9988, P≤ 0.05) and (r = 0.9967, P ≤ 0.05) respectively. Strong correlation existed between clay and Fe in field 53 (r = 1, P≤ 0.05). The concentration of the micronutrients (Fe, Mn,Zn Cu), in field 53 were not extreme (neither the highest nor lowest) when comparing the three fields indicating that BMP (Best Management Practice) may be the best for maintaining good micronutrient level in soils supporting oil palm. Fields 53 and 56 is adequate in Fe and Zn but not adequate in Mn and Cu while field 71 was adequate in Zn, Fe, and Cu but not in Mn. Based on the result of this experiment, adequate fertilizers of these micronutrients as their respective sulphates or impurities should be added to maintain proper micronutrient level.
Assessment of health risks from consumption of food crops fumigated with metal based pesticides in Gwadam, Gombe State, Nigeria
Authors: Bawa U. , Ahmad A. , Ahmad J.N. , Ezra A.G.
Published: December 2021

Intensive use of agrochemicals has led to build of heavy metals in the soil ecosystem and their transfer to edible parts of crops. This study was aimed to determine the heavy metals (Cd, Pb, Cr, Cu and Zn) concentrations in some twenty commonly used pesticides in northern Nigeria, and health risk associated from the consumption of food crops fumigated with these pesticides as the only source of metal contamination. Heavy metals content in pesticides, food crops and soils were analyzed after acid digestion using atomic absorption spectrometry. Traces of heavy metals (Cd, Pb, Cr, Cu and Zn) were detected in most of the pesticides. The concentrations of heavy metals in crops fumigated with pesticides ranged from 0.33-4.68, 1.75-38.08, 0.67-16.83, 9.01-436.75, 0.17-20.80mg/kg for Cd, Pb, Cr, Cu, and Zn respectively. The mean concentrations of Cd, Pb, and Cr in all the crops were above WHO, (2019) permissible limit. Heavy metals in soils of corresponding crops were below the permissible limits by UNEP, (2013) and NESREA, (2011). Bioaccumulation factor BAF showed high BAF>1 for Cu and Pb in all the studied crops,while pollution index value revealed contamination for Cd and Pb in all the studied crops. Hazard quotient showed potential health risk from the consumption of only Capsicumannuum for Pb. However, consumers may experience advance health risk through the consumption of Oryza sativa, Zea mays, Solanumlycopersicum, Capsicumfrustescens for all metals (Hazard index). Hence, there is the need for screening of heavy metals in pesticides and monitoring of metals contents in food crops.
Anti-trypanosomal activity of crude and nano-conjugated ethanol stem bark extracts of Sterculia setigera in mice
Authors: Abdulrazaq M.O. , Adeyemi H.Y. , Abdulkareem, A.S. , Bankole M.T. , Abubakar A.
Published: December 2021

This study was carried out to screen for anti-trypanosomal activities of Sterculia setigera crude and nano-conjugated ethanol extracts of synthesized gold nanoparticles (AuNPs). Fresh stem bark of S. setigera was separately extracted with ethanol (ES) and aqueous (AS) followed by green synthesis/reduction of ethanol extract with AuNPs, and its formulation into nano-conjugate with the addition of standard drug Diminazine aceturate (berenil). The synthesized AuNPs were also characterized. Both the extracts and drug were separately administered toTrypanosoma brucei brucei infected animals orally at 200mg/kg bodyweight for 12 consecutive days. Two separate groups were infected untreated and infected treated with Diminazine aceturate (Berenil) to serve as positive and negative controls respectively. Similarly nano conjugates of S. satigera conjugate with the addition of standard drug Diminazine aceturate(berenil). The synthesized AuNPs were also characterized. Both the extracts and drug were separately administered to Trypanosoma brucei brucei infected animals orally at200mg/kg bodyweight for 12 consecutive days. Two separate groups were infected untreated and infected treated with Diminazine aceturate (Berenil) to serve as positive and negative controls respectively. Similarly nanoconjugates of S. satigera conjugate with the addition of standard drug Diminazine aceturate (berenil). The synthesized AuNPs were also characterized. Both the extracts and drug were separately administered to Trypanosoma brucei brucei infected animals orally at 200mg/kg bodyweight for 12 consecutive days. Two separate groups were infected untreated and infected treated with Diminazine aceturate (Berenil) to serve as positive and negative controls respectively. Similarly nanoconjugates of S. satigera and berenil were also orally administered to different groups of rats for 12 days consecutively. Theresults showed that the ethanol extract treated group recorded significant decrease in parasitaemia than the aqueous treated group when compared with the untreated controlgroups (p<0.05). Furthermore, treatment with both the nanoconjugates effectively cleared the parasites from the blood circulation of the infected animal (p<0.05). Bodyweight and PCV of treated groups improved significantly in all the treated animals (p<0.05). The ethanol extract ofS. setigera exhibited trypanostatic activity while its nano-conjugated was trypanocidal.
Assessing the potential of Khayasenegalensis in phytoremediation of heavy metals under borehole water and tannery effluent irrigation
Authors: Zakari A. , Audu A.A.
Published: December 2021

Khayasenegalensis was planted on soil irrigated with tannery effluent and borehole water for duration of three months. Plant samples were collected after harvest and soil samples were collected before planting and after harvesting. Atomic Absorption Spectroscopy (AAS) was used to determine the concentration of heavy metals in the planting media and plant tissues. The aim was to establish the phytoremediation potential of Khayasenegalensis under these conditions. After harvesting, a noticeable decrease in the concentrations of Cd, Cr, Cu Ni, Pb and Zn in the media was observed from the initial values. The highest levels of Cd (5.53±0.56mg/kg), Cr (13.99±0.82mg/kg), Pb(10.6110.61±0.57mg/kg, Ni (8.33±2.78mg/kg)and Zn(25.72±0.00 mg/kg) accumulation were found in the roots, whereas the highest Cu (7.29±1.80mg/kg) concentrations was observed in the shoot. The roots of Khayasenegalensis were found to be suitable for the phytostabilization heavy metals in both the tannery effluent and borehole water irrigated media. In addition, Cd, Cr, Cu, Ni and Pb mainly accumulated in the Khayasenegalensisroots. The results of translocation factors (TF) and bioconcentration factors (BCF) of Khayasenegalensis for heavy metals revealed that Khayasenegalensis is an excluder plant for Cd, Cr, Pb, Ni and Zn and a potential accumulator plant for Cu serving as an ideal remediation plant for this metal. Furthermore, the increasing heavy metal contents in soil that have been irrigated with tannery effluent resulted in the accumulation of these metals inKhayasenegalensis.
Phytochemical screening and evaluation of antimicrobial activity of Albizia ferruginea (Fabaceae) leaves extract
Authors: Yusuf A.L. , Abdullahi B. , Abdulaziz I.
Published: December 2021

Phytochemical and antimicrobial activity of methanol extract of Albizia ferruginea (Guill and Perr) which belongs to the family of Fabaceae were studied. Phytochemical studies on the plant leaves showed that they contained alkaloids, tannins, flavonoids, steroids, saponins, cardiac glycoside and carbohydrate. Methanol extract of Albizia ferruginea showed growth inhibitory effects of varying degrees on S. feacalis, S. typhi, S. paratyphi, Shigella dysentriae and Klebsiella pneumonia but was not active on Streptococcus pyogenes and Pseudomonas aeruginosa. The minimum inhibitory concentration (MIC) of the extract was determined for the organisms whose growths were inhibited. The extract had MIC of 3.25mg/ml for S. feacalis, S. paratyphi, S. dysentriae and K. pneumoniae respectively. The antimicrobial studies of the extracts really justify the numerous folkloric uses of the plant parts in the treatment of some common ailments such as diarrhea, dysentery, fever, cough, pain and skin infections.
Assessment of lipid profile in-patients with Nephrotic syndrome in Kano Metropolis
Authors: Isah S.Y. , Abubakar S.L. , Danladi S.B. , Gwaram B.A. , Akram M. , Nnodim J. , Okafor P.A.
Published: December 2021

Nephrotic syndrome (NS) is a complex kidney disease associated with numerous complications which can subsequently lead to cardiovascular disease among others. This study was aimed at assessing the lipid profile, serum and urinary proteins of patients with Nephrotic syndrome (NS) in Kano metropolis. A total of 50 NS patients and 25  apparently healthy volunteers(controls) were recruited for the study, made up of 32 males and 18 females with the age range of 4-70 years. Blood and urine sample were collected from the participants. Serum urea and creatinine were determined using urease  berthelot’s reaction and Alkaline picrate methods. Serum total protein and albumin were assayed using Biuret and bromocresol green binding method through the manual colorimetrictechnique. Serum lipid profile were measured by an enzymatic spectrophotomeric method and the precipitation enzymatic method was specifically used for evaluating the levels of high-density lipoprotein cholesterol (HDL-C). Urine protein was determined using sulphur salicylic acid test. SPSS software package version 21 was used for the analysis of data. High frequency of NS of 40(80%) was observed in patients of <18 years while patient of >46 years had a lower frequency of 4(8%). Males recorded higher frequency of 32(64%) and the frequency of NS among females was 18(36%), thus the male to female ratio for NS was 1.78:1. The mean values of serum creatinine, urea, urinary protein (UP), total cholesterol (T.C), triglyceride (TG), low density lipoprotein cholesterol (LDL-C), T.C/HDL-C, TG/HDL-C, LDL/HDL-C ratio were significantly higher (p<0.05) in patients with NS than the healthy volunteers. Total protein (TP), albumin (Alb), globulin, HDL-C ratio were significantly lower (p<0.05) in NS when compared to healthy volunteers. There was positive correlation between UP and TC, TG and LDL, however, negative correlation was observed between UP and HDL-C with no statistical significance. Dyslipidemia, decreased serum protein and increase serum creatinine, Urea as well as UP were associated with NS. In conclusion, lipid profile and UP analysis may be a useful tool for diagnosis of NS and early diagnosis can reduce the disease morbidity.
Molecular modeling and docking analysis of bis-indolymethanes derivatives as human β-glucuronidase enzyme inhibitors
Authors: Ibrahim M.T. , Muhammad U.
Published: December 2021

β-glucuronidase enzyme is present mostly in mammals’ tissues. β-glucuronidase is present in kidney, bile, serum, urine and spleen. In eukaryotic and prokaryotic organisms, it is important in the process of breaking down of β-glucuronide. It also helps in the neutralization of reactivity of some metabolites that are associated to many diseases. The most stable geometry of the dataset were obtained adopting DFT method at B3LYP/6-31G* level of theory. The model was developed using MLR analysis adopting GFA method. Molecular docking was also performed to portray the binding mode of these bis-indolymethanes derivatives in the binding pocket of their target receptor (human β-glucuronidase). The selected model was assessed and chosen based on its statistical fitness with R2trng=0.907233, R2adj=0.881465,  Qcv2=0.833795, and R2test=0.609841. And also, the significance and impart of each physicochemical parameters to the selected model were determine by their ME values. Molecular docking analysis revealed that amino acid such as ALA49, SER52, ASP53, PHE51, VAL96, LEU92, TYR188, TYR199 and PHE200 might be responsible for the most promised binding affinity of the reported docked ligands. The molecular docking results showed that the reported compounds were better than the standard β-glucuronidase inhibitor. The results of this findings paved way for designing novel β-lucuronidase inhibitors.
Effect of Tamarindus indica juice intake on some oxidative stress markers in carbon tetrachloride induced rats
Authors: Sadi N.S. , Abubakar S.M. , Ibrahim A. , Umar A.M. , Gadanya A.M. , Kurfi B.G.
Published: December 2021

Tamarind tree is a multipurpose tree of which almost every part finds at least some use, either nutritional or medicinal. Due to its pleasant acidic taste and rich aroma, the pulp is widely used for domestic and industrial purpose. A study was carried out to evaluate the effect of Tamarind juice intake in CCl4 induced oxidative stress albino rats. The Proximate, antinutrient, and Phytochemical contents of tamarind juice were analyzed using standard AOAC methods while mineral contents were determined using atomic absorption spectrometry. Oxidative stress markers were also analyzed using colorimetric assay kit. The serum levels of oxidative stress markers were compared between the normal and test groups. Experimental rats were divided into five groups: Normal control group, negative control (CCl4) group, standard drug (Vitamin C) group, tamarind low and high dose group. At the end of the experiment, significant increase in malondialdehyde level and decrease in superoxide dismutase, catalase, reduced glutathione and glutathione Peroxidase activities were recorded in CCl4-exposed rats as compared to normal control group. In the tamarind supplemented groups, the level of MDA along with the activities of SOD, CAT, GSH and GPx were comparable with the normal control rats (p>0.05). Thus, it appears that tamarind juice ameliorate the effect of CCl4; suggesting that consumption of natural compounds with an antioxidant profile may be a preventive alternative to those diseases associated with oxidative stress.
In-vitro antibacterial activity of cinnamon bark extracts on clinical multi-drug resistant (mdr) Staphylococcus aureus, Klebsiella pneumoniae and Pseudomonas aeruginosa isolates
Authors: Idris F.Z. , Habibu U.A.
Published: December 2021

The present study was conducted to investigate antimicrobial activity of ethanol, dichloromethane and n-hexane extracts of Cinnamomum verum stem bark against Multi-drug resistant clinical isolates. C. verum bark powder was extracted with ethanol, dichloromethane and hexane respectively using Soxhlet extractor for 6 hrs. at temperature not exceeding the boiling point of the respective solvents. The extracts were further subjected to phytochemical screening as well as antimicrobial tests against clinical isolates of confirmed multi-drug resistant Staphylococcus aureus, Klebsiella pneumoniae and Pseudomonas aeruginosa using agar well diffusion method. Minimum inhibitory concentrations (MICs) and Minimum bactericidal concentrations (MBCs) were also determined. The extracts yield 11.8g, 10.2g and 9.0g for ethanol, dichloromethane and hexane respectively. The results of phytochemical screening indicated the presence of alkaloids, reducing sugars, saponins, steroids, cardiac glycoside, flavonoid, anthraquinones and tannins in the extracts. The ethanolic extracts showed the highest antimicrobial activity of 12.3±0.5mm against P. aeruginosa and 15.3±1.3mm against K. pneumoniae at 100mg/ml and antibacterial activities of 11.3±0.5mm against K. pneumoniae followed by 9.0±0.4mm against Pseudomonas aeruginosa and the least 8.0±0.0mm against Staphylococcus aureus at 20mg/ml concentration. While hexane extract of the plant has the highest activity of 9.0±0.0mm against Staphylococcus aureus isolates but less active against the remaining isolates at 20mg/ml concentration. Dichloromethane extract was less active against all the MDR isolates. The results showed that the MICs of C. verum ranged from 5-20 mg/ml while the MBCs ranged from 10-40 mg/ml. Thus C. verum could be used as potential source of antibacterial agents against MDR microbes.
Experimental assessment on preparation of biodegradable polythylene/polylatic acid-chithosan composite from renewable resources
Authors: Gumel B.U. , Gumel S.M. , Bawa A.A. , Auwal A.S.
Published: December 2021

Due to poor degradability and contamination risk of synthetic plastics, utilization of renewable resources is encouraged. Biobased thermoplastic polymers from renewable resource that is inexpensive, biodegradable, compostable and renewably non-toxic, is focused. In this paper mixtures of synthetic and natural polymers were used as a potential option to reduce pollution by plastic waste. The study is aimed at assessing utilization of sweet potato waste as a source of bioplastic for package application, the polymer was modified with a biopolymer chitosan to obtain polylactic acid-chitosan plastic. The developed polymer matrix was blended with polyethylene to obtain biodegradable packaging material. The bioplastic was characterized using Fourier Transformed Infra-Red Spectroscopy (FTIR) and scaning electron microscope (SEM). Physical and mechanical properties of the composites were evaluated by measuring enzymatic degradation, tensile strength, and elongation at break. The results have shown that the film obtained have homogeneous surface by (SEM). Mechanical properties of the bio plastics revealed that tensile strength increases with increases in the concentration of chitosan and hence, the elongation at break decreases with increase in chitosan content. While the fastest enzymatic degradation was observed to have high microbial growth on the bio plastics with high content of Chitosan-Polylactic acid.
Stability constants of complexes of metal ions with peatsoil humic acids under non-acid-conditions
Authors: Sabo Yusuf , Jimoh W.L.O. , Baba Koki Isa , Sholadoye Q.O.
Published: December 2021

Stability constants of complexes of four divalent metal ions viz. Cu2+, Pb2+,Mg2+ and Cd2+  with humic acids (HA) were determined by potentiometric titration of humic acids with the corresponding salt of the divalent metals in aqueous media under non-acid-condition. The log K (logarithm of the stability constant) ranged from 1.0942 to 2.7471 for metal-humic acid complexes were determined using point-wise computational method. The order of stability constants were obtained as follows: Cu >Pb> Cd > Mg for metal -HA complexes respectively, indicating a higher degree of complexation with Cu metal ion.
Exploring Female Students’ Quest for Leadership and their Experiential Realities in the University of Education, Winneba
Authors: Attom Lucy Effeh , Adu-Boahen Anitha Oforiwah , Yeboah Danso-Wiredu Esther
Published: December 2021

The study explored female students’ quest for leadership and experiential leadership realities in higher educational institutions in Ghana. In Ghana, female enrolment in higher educational institutions has increased due to population increases and campaign for girl-child education. However, despite the opportunities and access to higher education, female students’ quest for leadership positions in their educational institutions is often thwarted and largely insignificant compared to their male counterparts. However, there is evidence in Ghana that national leadership, especially in politics, is usually linked to leadership at tertiary institutions, especially, in the universities.  Using female students’ leadership in governance at the University of Education (UEW) as a study focus, and employing the liberal feminist theory, we hypothesised that female students’ desire for leadership positions in higher education would not differ significantly from reality due to some systemic cultural challenges. The study revealed that certain leadership positions are preserved of males, and females who vie for such positions generally encounter some cultural setbacks . The study concludes that female students are motivated to take leadership positions due to their desire to lead and serve the people, but society uses gender to set limit for women when they vie for leadership positions. The study recommends that teachers and parents should encourage both males and females to take up equal leadership roles early in life to arouse in them the drive for future leadership positions.
Economía de escala y realidad ambiental empresarial desde el contexto de viviendas eco amigables
Authors: Intriago-Plaza Renato , Loor-Loor Efrén , Puente-Padilla Gabriela
Published: December 2021

Durante mucho tiempo se especuló que las empresas que comercian más productos o servicios contaban con mayor confiabilidad que las empresas que venden menos, dado que tienen más que perder si los consumidores deciden que estas empresas no han cumplido con sus directrices, entre estas, la consciencia ambiental. dicha suposición ha sido cuestionada por múltiples investigaciones que muestran que, bajo el modelo estándar de juego repetido infinitamente de reputación, las economías de escala de reputación se producirán solo bajo condiciones específicas. En este contexto, El creciente enfoque global en la creación de consciencia ambiental ha colocado una gran demanda de los especialistas y ambientalistas en la construcción de edificios y viviendas ecológicas, así también como la manufactura de verde y materia prima sostenible para reducir la dependencia de recursos convencionales.

Palabras claves: Economía, empresa, conciencia ambiental, viviendas ecológicas.
Comparison of real estate appraisal methodologies based on artificial intelligence
Authors: Legido Casanoves José
Published: December 2021

The aim of this paper is to present and compare models that estimate the value of a property according to its characteristics. This information can be required by, for example, potential investors in the real estate markett. In this way, they will be able to compare the offer price of the property with the value obtained by the model, before making investment or disinvestment decisions. In this paper we apply supervised (regression tree, random forerst, nearest neighbour, SVM) and unsupervised (clustering) data analysis methods in order to estimate the value of dwellings located in the city of Madrid, Spain. It is found that the housing characteristic that most influences the price is the surface area, and to a lesser extent the number of rooms, whether the building has a lift, the number of bathrooms and whether the building has a car park. The best method of estimation, according to the MAPE, was the random forest method.
CLASIFICACIÓN DE CUADRILÁTEROS: UN ANÁLISIS DEL LIBRO DE TEXTO EN EDUCACIÓN PRIMARIA
Authors:   Universidad Autónoma de Guerrero, Blanco Hurtado Antonia Itzel , Moreno Alejandri Gema Rubí
Published: December 2021

El papel fundamental del libro de texto ha impactado en que se asuma como objeto de estudio y, en consecuencia, emerjan instrumentos para su valoración. En este trabajo se muestran resultados obtenidos al analizar la clasificación de cuadriláteros en el libro de texto gratuito de cuarto grado de primaria. Las unidades de análisis que se proponen incorporan aspectos como: los procedimientos lógicos asociados a los conceptos, el momento en que emerge la "clasificación", las características del material visual ilustrativo, las características de la división de conceptos, las leyes lógicas en la clasificación y tipo de ordenamientos de conceptos. El estado que guarda la clasificación de cuadriláteros en el libro de texto es, potencialmente, insumo para la generación de materiales curriculares complementarios.
MESTO FINANSIRANjA SPORTA IZ BUDžETA LOKALNIH ZAJEDNICA U EVROPSKOM MODELU FINANSIRANjA SPORTA
Authors:   University of Kragujevac, Faculty of Law, Đurđević Nenad
Published: December 2021

Sport, as a public service, is vital for local communities and their public authorities should be aware of their primary responsibility to create and maintain conditions for the development of sport in their territory. Sport is an integral part of local cultural activities and it is therefore vital that local authorities have an active and comprehensive view of the importance of integrating sport into local politics in general. However, the development of modern sports significantly depends on the type, growth and increase of sources of funding for sports, where the budgets of local communities (cities and municipalities) are of great importance in European countries. In his paper, the author analyzes the role of local communities in the field of sports in European countries and the general framework for financing sports from their budgets.
JAVNE ZAVEŠTAJNE FORME U SRPSKOM PRAVU
Authors:   University of Kragujevac, Faculty of Law, Đurđić Milošević Tamara
Published: December 2021

A will is a strictly formal legal transaction. Due to the nature of the testamentary disposition, the form has a constitutive significance, and the testator can manifest his last will in one of the available testamentary forms prescribed by law. One of the basic clasification of testamentary forms is public and private. Public bequests are of special importance for the realization of the freedom of testation, because they provide the widest circle of persons with the possibility of its manifestation, as well as the greatest degree of legal certainty. The paper discusses the extent to which public forms achieve their legal purpose in testamentary law and meet the requirements of modern legal transactions mortis causa. In that direction, the question arises whether it is necessary to modernize the existing testamentary forms in Serbian law (primarily public), ie to introduce some new forms of testament and / or the abolition of old ones that have lost their practical application, all with the aim of enabling freedom of testation to any testamentary capacited person in whatever circumstances he finds himself.
PRESTANAK UGOVORA O POSREDOVANjU U SPORTU
Authors:   University of Kragujevac, Faculty of Law, Vuković Zoran
Published: December 2021

The general rules of contract law apply to the termination of the contract on mediation in sport. In addition to the general methods of termination of the contract, from the specifics of the legal relationship established by the contract on mediation in sport derive certain specifics related to its termination. Disctiveness that characterize the termination of the contract on mediation in sports are the subject of research in this paper.
PRAVO NA POŠTOVANjE DOMA U PRAKSI USTAVNOG SUDA REPUBLIKE SRBIJE (UTICAJ PRAKSE EVROPSKOG SUDA ZA LjUDSKA PRAVA)
Authors:   University of Kragujevac, Faculty of Law, Čanović Jelena
Published: December 2021

A special regime for the protection of the right to respect for home is provided with the Article 8 of the European Convention for the Protection of Human Rights and Fundamental Freedoms. With ratification of this Convention, the Republic of Serbia has undertaken the obligation to respect and effectively implement the rights guaranteed by the European Convention as a "minimum European standard". The role of the European Court of Human Rights in defining and determining the scope of basic human rights, so the right to respect for home too, is reflected in its rich practice, which greatly affects national legal systems. Thus, the European Court in its practice has defined the principles and criteria for providing protection of the right to respect for home. To monitor the used instruments for protection of the right to respect for home in the domestic legal order and their harmonization with European standards of protection, it is necessary to analyze the practice of the Constitutional Court of the Republic of Serbia, through which is reflected practice of regular courts as well. Considering that in the practice of the highest courts in our country, as well as in the practice of the Constitutional Court, the right to respect for home has been recognized recently, the lack of numerous theoretical discussions and practical analyzes of prominent controversial issues indicates the relevance of this topic about we write about.
OSIGURANjE ŽIVOTA U KORIST TREĆIH LICA
Authors:   University of Kragujevac, Faculty of Law, Miladinović Zoran
Published: December 2021

Insurance of life in favor of third parties is more important than the insurance of life in case of death. Moreover, in some rights this type of insurance can be contracted only in the event of the death of the insured person. There are no such restrictions in our insurance law, which means that the same can be agreed in case the isured person reaches a certain age. With this type of insurance, the insured event can be realized on the person of the insurance policyholders or on some other person. The insured person can therefore be the insurance contractor himself and it can also be another person. Considering that in this type of insurance, upon the occurrence of the insured event, the payment of the insured amount is always made to a certain third party beneficiary and that the insurance contract mentions several persons with different legal status, the insurance contract must clearly define the issues such as clear determination of the beneficiary insurance, what happens if the insurance beneficiary dies before the insured person, or the contractor assures, whether it is necessary for the insurance beneficiary to give his consent to be paid compensation, whether and until when the insurance policyholder can revoke the benefit he has contracted for a third party-beneficiary of the insured, etc. All these issues are mainly regulated by legal provisions, but of particular importance are General Conditions of life insurance of life insurance companies, as the above issues are clearly defined on the basis of experiences that have proven to be open in practice.
UTICAJ AUTORSKOG PRAVA I PRAVA KONKURENCIJE NA ZAČETKE I USPON AMERIČKE FILMSKE INDUSTRIJE
Authors:   University of Kragujevac, Faculty of Law, Vujnović Ljubica
Published: December 2021

In the period prior to the inclusion of motion pictures in copyright law in 1912, film producers had built their businesses on copying each other's films. Film pioneers were inventors, holders of patents right on equipment who did not perceive motion pictures as art, but as a scientific experiment. With the increasing growth of new media, protection of piracy became necessary. The Sherman Act of 1890 was the first Federal antitrust act. However, at the beginning it did not outlaw monopolistic business practices of film producers, which gave a major contribution to the formation and rise of Edison's trust and later, the Independent producers as well. During the First World War feature film became a standard in the film industry. Progresive increase of costs of production determined the decline of the European film industry, which could not catch up to US dominance.
STRANE DIREKTNE INVESTICIJE U AKTUELNIM USLOVIMA POSLOVANjA
Authors:   University of Kragujevac, Faculty of Law, Brašić Stojanović Jovana
Published: December 2021

The focus of the paper is the analysis of inflows and outflows of foreign direct investments in the Republic of Serbia in the current business conditions marked by a pandemic caused by the COVID-19 virus and the measures that had to be taken as a result. Due to the contribution that foreign direct investments provide to the economic development of the country, the primary goal of the Republic of Serbia is to preserve a favorable investment climate and actively implementation of foreign investment attraction. After the declared pandemic, international economic flows are changed, and thus the movement of foreign direct investments, so their reduced inflow was recorded in the Republic of Serbia as well. Therefore, as a result of the research, the author expects forming a final position on the real benefits achieved through foreign direct investment for the Republic of Serbia in the current conditions compared to the costs of measures taken of epidemiological and economic nature.
O FINANSIJSKOJ AUTONOMIJI NIŽIH TERITORIJALNO-ADMINISTRATIVNIH JEDINICA OD 1919. DO 1929. GODINE – PRILOG POIMANjU POSTOJANjA LOKALNE SAMOUPRAVE U PERIODU PRIMENE VIDOVDANSKOG USTAVA
Authors:   University of Kragujevac, Faculty of Law, Bačanin Vojislav
Published: December 2021

There are divergent authorial views with regard to the assessment of the self- government of municipalities, counties and areas proclaimed by the Vidovdan Constitution and accompanying legal acts. Public and financial doctrine is in agreement in the belief that without the financial autonomy of lower territorial- administrative units, there is no actualization of the principles of local self- government. Since the topic of the development of local public finances in our country still seems insufficiently researched, the author tries to re-test the hypothesis of the existence of local self-government in the period of application of this constitutional act, by presenting the normative framework and significant doctrinal reviews on this issue. The aim is to provide a possibility for a broader and more effective view of the development of this political and legal institute.
DIGITAL STORYTELLING AS A TEACHING METHOD IN ADULT EDUCATION - THE CORRELATION BETWEEN ITS EFFECTIVENESS AND WORKING MEMORY
Authors: Karanasiou Konstantina , Drosos Christos , Tseles Dimitris , Piromalis Dimitris , Tsotsolas Nikos
Published: December 2021

In recent years, technology has been growing rapidly. The impact that Information and Communication Technology (ICT) and associated teaching tools have on the learning process is already significant, and this is expected to grow further in the future. Digital Storytelling (DST) is a combination of interaction and learning at the same time and it could prove to be an excellent teaching method at the disposal of the educator. The present study is an attempt to examine the impact of the method in adult education, providing that the learners are the creators of digital stories. In addition, the current research is an attempt to examine the relationship between learners’ Working Memory and the impact of DST on their learning performance. The research has been conducted in a public vocational training institute. The findings revealed that DST is an effective learning tool in adult education that can improve learners’ performance. In addition, the findings suggest that the method is more effective in learners which have higher working memory rates than others.

 

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THE CURRENT SITUATION OF ASSURANCE CONDITIONS FOR EDUCATION AND TRAINING IN KE SACH, SOC TRANG PROVINCE, VIETNAM
Authors: Lan Mai Thi Yen
Published: December 2021

The objective of the paper is to provide scientific information accurately and comprehensively on the assurance conditions for education and training in Ke Sach district, Soc Trang province. By carrying out the methods of sociological investigation and a survey, the paper highlights the current situation of assurance conditions for education and training, including: network, assessment scales, education quality, facilities, and teaching staff.
 

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THE DARK TRIAD AND PERCEPTIONS OF ORGANISATIONAL JUSTICE AMONG TEACHING STAFF IN PRIVATE HIGHER EDUCATION
Authors: Sokić Katarina , Khawaja Sarwar , Qureshi Fayyaz Hussain
Published: December 2021

The main purpose of this study was to examine the relationship between The Dark Triad components (Machiavellianism, Narcissism, and Psychopathy), and perceptions of the different organisational justice dimensions (distributive, procedural, and interactional) among teaching staff in private higher education. The sample included 277 participants (106 male, 171 female) aged 23 to 65. Self-report data were collected online using the Short Dark Triad, and The Organisational Justice Perceptions Questionnaire. Results have shown significant gender differences in the perception of organisational justice. Psychopathy was negatively related to the perception of distributive, procedural, and interactional justice only in men. Narcissism uniquely positively predicted distributive, procedural, and interactional justice in women. Machiavellianism showed no significant effects on perceptions of organisational justice dimensions in both men and women, which suggests that Machiavellianism operates similarly across gender regarding organisational justice. The positive effect of narcissism on the perception of procedural and interactional justice was more pronounced when associated with low Machiavellianism, which indicates that Machiavellianism indirectly negatively affects the perception of organisational justice. The results highlight the importance of including dark traits in explaining the perception of organisational justice.

 

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DEVELOPMENT OF EMOTIONAL COMPETENCE IN EXAM SITUATIONS WITH STUDENTS WHO ACHIEVE DIFFERENT ACADEMIC SUCCESS AND STUDY DIFFERENT STUDY PROGRAMS
Authors: Pavlović Zlatko , Kaurin Sonja , Sladoje-Bošnjak Bilјana
Published: December 2021

The authors, in the theoretical part of the paper, define and explain the concept of emotional competence, as well as skills that should be developed and strengthened within the mentioned concept. Also, the importance of emotional competence in exam situations for the academic success of students has been presented, which is supported by the presentation of research related to this topic. The aim of the study was to examine whether students with different academic achievement and from different study programs showed different levels of emotional competence in exam situations. The research was conducted on a sample of 115 students from the Faculty of Philosophy, University of East Sarajevo. The paper presents the results of examining the differences in the development of emotional competence in exam situations in students with different academic achievement and the results of examining the differences in the development of emotional competence in students in exam situations depending on the study program they study. The findings show that there are no differences in the development of emotional competence in exam situations in students with different academic achievement, but there are differences when it comes to the development of emotional competence in exam situations depending on the study program that students’ study. This research is a contribution to a better understanding of students' emotional competencies in exam situations and may have practical implications in terms of understanding the importance of improving the emotional sphere in all study programs by expanding study objectives so that they include developing of students' emotional competencies.

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INFRASTRUCTURAL RESOURCE PLANNING DYNAMICS AND PERFORMANCE OF UPGRADED EXTRA-COUNTY SCHOOLS TO NATIONAL STATUS IN WESTERN KENYA COUNTIES
Authors: Wekesa Violet , Kipkoech Lydia
Published: December 2021

Infrastructure resource planning is important to ensure provision of quality education in public secondary schools. When the extra county public secondary schools were upgraded to national status, it was expected that the increased enrolment would match with expansion of existing facilities. This paper addresses the infrastructural resource planning dynamics and performance of upgraded schools in western Kenya. The study adopted a descriptive research design; the target population were 263 and 8 principals from teachers in the 8 upgraded national schools. The sample size was 156 respondents purposively sampled for principals and heads of departments, while teachers were sampled using random sampling technique. Data was collected using questionnaires, interview schedule and observation checklist. The collected data was analyzed using descriptive statistics. Research data showed that Infrastructural resources planning dynamics had no significant (r=0.063, p=0.432) with performance of the upgraded schools to national level. The result found out that the increased enrolment did not match with increased infrastructure facilities. The paper concludes that performance of students in KCSE examinations was negatively affected as the available infrastructural facilities could not accommodate high number of learners admitted hence affecting effective teaching and learning process. The study recommends that Ministry of Education should increase allocation to upgraded national schools to expand their infrastructure and upgraded schools board of management should mobilise financial resources to enable them to put up new and expand the existing facilities for quality secondary education.

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TÜRKIYE’DE 2008 SONRASI PARA ARZININ İÇSELLİĞİ-DIŞSALLIĞI ANALİZİ
Authors: TÜRK Mehmet Mert , BARIŞIK Salih
Published: December 2021

Paranın yaratım sürecine yönelik tartışmalardaki fikir ayrılığı para arzının içsel (endogenous) mi dışsal (exogenous) mı belirlendiği noktasında derinleşmektedir. Monetarist görüşe ait enflasyon hedeflemesi rejimi altındaki Türkiye ekonomisini test eden 2008:10-2021:02 dönemli çalışmada para arzının Monetarist görüş varsayımını yanlışlar şekilde içsel olduğu tespit edilmiştir. Paranın içselliği para yaratımını üretim ile bağdaştırarak merkez bankalarını son ödünç verme mercii olarak sistemin içinde tutmaktadır. Analiz sonucunda para arzının içsel olduğu bulgusu diğer bir bakış açısıyla ilgili dönem için TCMB’nin fonksiyonel bir bağımsızlık taşımadığını da dolaylı olarak göstermektedir.