bluuebunny/crossref_metadata_2025 huggingface dataset:
Physiological pacing: just a lot of buzz or the next paradigm shift in bradycardia pacing?
Authors: Tan Kenny , Ng Shonda , Foo David , Tan Li Wei , Teoh Xuyan , Chia Pow-Li
Published: January 2024

Cardiac pacing has been an established therapy for bradyarrhythmia due to sinus or atrioventricular nodal disease since the 1950s. However, contemporary studies have shown that conventional right ventricular pacing (RVP) causes electromechanical dyssynchrony, which can lead to atrial fibrillation, heart failure and even death. Recently, the push for a more physiological cardiac pacing has seen a revival in the utilisation and development of conduction system pacing (CSP). There has been a shift towards adopting His bundle pacing (HBP) or left bundle branch area pacing (LBBaP) in bradycardia patients worldwide and in Singapore. This review serves to outline the electrophysiological concepts behind CSP and illustrate the different paced electrocardiogram characteristics of HBP, LBBaP and RVP to aid understanding of this revolutionary pacing approach among medical practitioners in Singapore.
Comparative evaluation of “closed posterior levator advancement” in simple congenital and aponeurotic ptosis
Authors: Goel Ruchi , Singh Sonam , Shah Shalin , Khanam Samreen , Golhait Priyanka , Gaonker Tanvi
Published: January 2024

PURPOSE:

The purpose of this study was to compare the outcomes of “closed posterior levator advancement” (CPLA) in acquired aponeurotic and simple congenital ptosis with good levator function (LF).

MATERIALS AND METHODS:

A prospective interventional study was conducted on 20 adult patients, 10 simple congenital ptosis, and 10 acquired aponeurotic ptosis with LF ≥8 mm. Complicated, posttraumatic, neurogenic ptosis and previous lid surgery were excluded. A detailed history and assessment of visual acuity, upper eyelid margin reflex distance (MRD1), margin-crease distance, LF, Bell’s phenomenon, ocular surface disease index (OSDI), and phenylephrine test were undertaken. CPLA was performed in the 20 eyes and were followed up for 3 months.

RESULTS:

The ages of the study participants ranged from 18 to 64 years, and the male: female ratio was 11:9. There were nine aponeurotic and one congenital severe ptosis, the remaining 10 being mild–moderate ptosis. The etiologies in the aponeurotic group were involutional (2), contact lens wear (1), allergic conjunctivitis (3), and idiopathic in four eyes. The success rates were 90% in both groups. The amount of ptosis correction showed a positive relation with LF (r
s = 0.6, P = 0.004) and phenylephrine test (r
s = 0.7, P < 0.001). The complications in the aponeurotic group were lagophthalmos (2/10), subjective dry eye (2/10), subconjunctival hemorrhage (1/10), symblepharon (1/10), temporal flare (1/10), and overcorrection (1/10). The congenital group showed only undercorrection (1/10).

CONCLUSION:

CPLA is an effective procedure for the treatment of mild–moderate simple congenital and all grades of aponeurotic ptosis with good LF. Response to phenylephrine test serves as a useful guide to the amount of ptosis correction.
Angiolymphoid hyperplasia with eosinophilia in the eyelid: A case series and literature review
Authors: Ahmed H. Shafeeq , Thrishulamurthy Chinmayee J. , Biligi Dayananda S. , Nagaraju G.
Published: January 2024

Angiolymphoid hyperplasia with eosinophilia (ALHE) is a rare vascular disorder characterized by the proliferation of blood vessels and lymphoid tissue. While it can occur in various regions of the body, ALHE presenting in the eyelid is relatively uncommon, leading to diagnostic and management challenges. In this case series from South India, we present three unique cases of ALHE specifically affecting the eyelids. Each case illustrates different clinical manifestations, diagnostic workups, and treatment approaches. Tissue biopsies typically reveal nodules comprising immature and mature vascular structures, including capillaries, arterioles, and venules, which are lined by plump endothelial cells with an epithelioid appearance. The surrounding stroma contains a dense infiltrate of inflammatory cells, predominantly eosinophils, histiocytes, lymphocytes, and mast cells. Increased awareness of ALHE in the eyelid will aid ophthalmologists in early recognition, accurate diagnosis, and appropriate management, resulting in improved patient outcomes.
Existence of solutions for a class of fractional Kirchhoff variational inequality
Authors: Deng Shenbing , Luo Wenshan , Torres Ledesma César E. , Alama Quiroz George W.
Published: January 2024

We are concerned with the following fractional Kirchhoff variational inequality:

\begin{split} (a+b[u]^2)\int_{\mathbb{R}^3}(-\Delta)^{\frac{s}{2}} u (-\Delta)^{\frac{s}{2}}(v-u) \mathop{}\!d x + \int_{\mathbb{R}^3}(1+\lambda V(x))u(v-u) \mathop{}\!d x\\ \qquad\geq \int_{\mathbb{R}^3}f(u)(v-u) \mathop{}\!d x \quad \forall v \in \mathbb{K}, \end{split}

where

s\in(\smash{\frac{3}{4}},1)

,

\lambda>0

. In this paper, by applying penalization techniques from Bensoussan and Lions (1978) combined with mountain pass theorem, we show the existence and concentration behavior of positive solution to the cited variational inequality. This result extend some results established by Alves, Barros and Torres [J. Math. Anal. Appl. 494 (2021)] to the fractional case.
The bounds of meta-analytics and an alternative method
Authors: Shanmugam Ramalingam , Tabatabai Mohammad , Wilus Derek , Singh Karan P.
Published: January 2024

OBJECTIVES: Meta-analysis is a statistical appraisal of the data analytic implications of published articles (Y), estimating parameters including the odds ratio and relative risk. This information is helpful for evaluating the significance of the findings. The Higgins I2 index is often used to measure heterogeneity among studies. The objectives of this article are to amend the Higgins I2 index score in a novel and innovative way and to make it more useful in practice.METHODS: Heterogeneity among study populations can be affected by many sources, including the sample size and study design. They influence the Cochran Q score and, thus, the Higgins I2 score. In this regard, the I2 score is not an absolute indicator of heterogeneity. Q changes by bound as Y increases unboundedly. An innovative methodology is devised to show the conditional and unconditional probability structures.RESULTS: Various properties are derived, including showing that a zero correlation between Q and Y does not necessarily mean that they are independent. A new alternative statistic, S2, is derived and applied to mild cognitive impairment and coronavirus disease 2019 vaccination for meta-analysis.CONCLUSIONS: A hidden shortcoming of the Higgins I2 index is overcome in this article by amending the Higgins I2 score. The usefulness of the proposed methodology is illustrated using 2 examples. The findings have potential health policy implications.
Effective Technology of Carp (Cyprinus carpio) Sperm Cryopreservation for Use in a Large-Scale Cryobank
Authors: Dokina Olga , Kovalev Konstantin , Pronina Natalia
Published: January 2024

Preliminarily developed technology of cyprinids sperm cryopreservation was improved by optimization of protective medium composition. Effectiveness of this medium was confirmed by examination of trial media as well as by freezing sperm samples for storage in cryobank. Protective medium for cyprinid fishes sperm is aqueous solution consisting of 0.1% sucrose, 0.35% sodium chloride, 20-24% methanol and 3-6% ethylene glycol. When used, this medium stably ensured cryoprotection of sperm cells of different quality and conservation of its fertility at the level of native sperm. Results of evaluation of quality of cryopreserved cyprinid sperm samples before putting them in a low-temperature gene bank of VNIIPRKh are presented.
Post-mortem Fertilizing Capacity of Spermatozoid Chirostoma jordani (Atheriniformes: Atherinopsidae)
Authors: Rodríguez-Gutiérrez Martha , Ávalos-Rodríguez Alejandro , Olivares-Orozco Javier Lorenzo , Bustamante-González Jesús Dámaso
Published: January 2024

Post-mortem fertilization is considered a technique in which semen is extracted from a dead male to fertilize the egg of a living female. Therefore, this technique can be an excellent option in the face of the loss of biodiversity of multiple animal species. The objective of this research is to implement post-mortem assisted reproduction in the charal, Chirostoma jordani, which is a species of economic, biological and cultural importance in Mexico. Mature males were obtained from commercial capture Atlangatepec Dam, Tlaxcala, Mexico. The mature males were sacrificed and divided into three groups: 1) room temperature 18±1°C, 2) ice 5±1°C and 3) refrigeration 11±1°C. The variables evaluated were: percentage (s), duration of motility (%), and fertilization rate (%) at zero, two, four, six, eight and ten hours in quadruplicate, respectively. The results indicate that sperm viability decreased over time; at room temperature it lasted six hours; in ice and refrigeration 10, denoting significant differences (P<0.05). Semen from organisms preserved in ice and refrigeration presented the best fertilization percentages at two and four hours (>90 and ~80%, respectively) (P<0.05). For practical purposes, it was demonstrated that semen from post-mortem organisms can be used to develop conservation practices.
Analysis of the influence of the tire pressure on vehicle comfort with the aid of a virtual test rig
Authors: Dias Cádmo , Júnior Jánes Landre , Oliveira Felipe , Braga Gabriel , Brandão Pedro
Published: January 2024

Human comfort is one of the main aims of this century due to technological progress. In this context, automotive companies work to ensure this factor for the driver and passengers in any situation. Then, the present paper aims to evaluate the tire pressure (a factor that depends on the vehicle user) effect on vehicle comfort. To do so and with the aid of ISO 2631-1:1997, a virtual model with 14 degrees of freedom was used since it is the one that presents results more consistent with reality. Thus, it was determined the speed of 50km/h of the vehicle traveling on a straight path, without oscillations, and the standard tire model of the software considering five different tire pressures to be analyzed, 14, 20, 26, 32, and 38 psi and to configure and simulate these parameters, a MATLAB/Simulink application was used, the Vehicle Suspension and Tire Analysis. Therefore, for each tire pressure data were collected in the time domain and at the vehicle’s center of mass. The data collected are accelerations in the three directions, X, Y, and Z, and also the moment around the Y axis, to evaluate the yaw effect of the vehicle. Furthermore, a conversion of the acceleration by time to acceleration by frequency was made using a Fast Fourier Transform where it was possible to visualize the excitation points in the human body and correlate the data with the vehicle comfort standard previously mentioned in the face of the different situations studied. As a result, through the analysis of acceleration per time and Y moment per time for other tire pressures results were obtained that characterize situations of discomfort in some specific situations in the trajectory of the vehicle, especially when it comes to lower pressures representing situations of lack of tire maintenance.
INCORPORATING METHODS OF GRAPHENE IN POLYMERIC NANOCOMPOSITES TOWARDS AUTOMOTIVE APPLICATIONS -A BRIEF REVIEW
Authors: Dantas Patrícia Allue , de Freitas Camila Mendonça , de Souza Camila Gomes Peçanha , Lopes Rodolfo Rodrigo , Osti Reinaldo
Published: January 2024

This work aims to develop a PA6 nanocomposite with glass fiber (GF) and graphene nanoplatelets (GNPs) focusing on automotive parts application. Polyamide 6 is a semi-crystalline polymer that exhibits high fatigue and flexural strength, making it viable for rigorous applications. Along with the improved electrical, mechanical, thermal, and optical performance achieved in PA6 and GF-based nanocomposites, they can fill complex geometries, have great durability, and are widely utilized due to their capacity of reducing the weight of the vehicle besides a cost reduction potential. The glass fiber is a filamentary composite, usually aggregated in polymeric matrices, which aims to amplify the mechanical properties of polymers, mainly the tensile strength in the case of PA6. Nanocomposites, on the other hand, are hybrid materials in which at least one of the components has nanometric dimensions, and the other component serves as a matrix, such as the dispersed particles of GF and GNPs present in this study. Among the fillers of nanocomposites are graphene nanoplatelets, which stand out in nanocomposites due to their easy and safe inclusion in polymer matrices, as can be seen in recent studies on the toxicity of GNPs, where it was found that graphene is much safer than carbon black for large-scale use, this being a positive point regarding the application of GNPs. With this, many studies about the synthesis of graphene-based nanocomposites have been developed seeking to strengthen their mechanical properties. These studies corroborate our proposal, which aims to use GNPs to enhance the mechanical properties of PA6/GF. To obtain them, methodologies such as melt-compounding and injection molding will be used later.
Computational Study on the Influence of the Radiator in Vehicle Overall Performance
Authors: Buscariolo Filipe Fabian , Gonzales José Fernando Paz , Alves Julio Cesar Lelis
Published: January 2024

One of the key components in engine cooling system design in internal combustion vehicles is the radiator, which is responsible not only for regulating the engine coolant temperature but also for the required airflow crossing the grille openings. Considering different construction techniques and materials, the radiator design and its characteristics influence the overall vehicle performance. This work proposes a study on the influences of the radiator in the overall performance of a conceptual vehicle design, when considering different parameters. The main radiator characteristics evaluate in this study are the construction type, heat exchange thin number and tube number in different configuration arrays. Virtual cfd simulations are used to perform this study, where the drag influence in verified in three velocities: 40, 60 and 80 kph and compared with a baseline vehicle. The water flow rate is also evaluated and compared with same baseline model, in order to provide the best radiator performance in terms of thermal and aerodynamic efficiency.
Can Road Tires be Applied in Agriculture?
Authors: Filho Aldir Carpes Marques , Medeiros Simone D. S. , Martins Murilo B. , Lanças Kléber P.
Published: January 2024

The mechanization of crops causes problems in soil structure as it causes compaction. Compaction can be severe depending on the type of tire adopted in the field. Producers are concerned with selecting wheelsets that harm the soil less and remembering to save resources when buying agricultural tires. Agricultural tires are more expensive than road tires, and truck tires can be an alternative for producers to save money. The present study evaluated the interaction between wheelset and ground in a fixed tire testing unit, comparing the impact of different tire models on bare ground. The 6 treatments performed consisted of 3 tire models (p1: road radial, composed of double wheelset - 2×275/80r22.5; p2: agricultural radial - 600/50r22.5; and p3: agricultural diagonal - 600/50-22.5) versus two contact surfaces, one rigid and the other with bare agricultural soil. Seven response variables were used to apply Regression analysis and descriptive statistics. Agricultural tires applied less pressure to the soil, and the most significant resistance to soil penetration was obtained with the road tire, reaching severe compaction levels. We verified an increase in the contact area of the tires on a hard surface of 473% for p1, 417% for p2, and 625% for p3. Road tires must be applied in crops cautiously, as these models can cause more significant stress on the soil, especially in high humidity conditions.
A development framework using scale platforms for the verification of vehicle technologies
Authors: Marini Vinicius Kaster , Bortolussi Roberto , de Toledo Fleury Agenor , Trigo Flávio Celso
Published: January 2024

There is a need to enable the evaluation of ascending vehicle technologies such as the electrified powertrain and the driving assistance systems with low cost and low risk resources. In a context of ever stringent requirements for developing new vehicles, system and production complexities lead to high capital expenses required to ensure serial production will be implemented. One of such complexities is the interdependency between power delivery and dynamic control, which creates trade-offs in the treatment of performance and safety parameters. Virtual models still provide intermediate-level resources, and test platforms have limitations to verifying dynamic parameters; against this situation, scale vehicle platforms provide a low cost and low risk alternative for the implementation of innovative technologies based on integrated systems for improving vehicle performance and safety. The methodology proposition involves the definition of a meta-model based on the following dimensions: functionalities and their respective subsystems, and dimensional/dynamic similarity to real vehicles. This is applied to planning the development of an electronic differential system controlling individual traction motors with torque vectoring. As a result, the method generates a framework of vehicle technology development through different technology readiness levels considering similarity in the following criteria: the degree of refinement to which vehicle functionality is implemented, and the similarity in vehicle architecture and performance parameters. The use of scale platforms is expected to allow the tune-up of preliminary dynamic qualities through varied performance demands and terrain conditions, prior to scaling them towards real vehicle size.
Acquired spermatic cord hydrocoele of the cord in a Ghanaian Adult: a case report
Authors: Kanyiri John Kanyiri Yambah , Fenella Avoke Kafui , Opoku Victor , Annan Richardson
Published: January 2024

Les hydrocèles du cordon spermatique (HCS) sont des tumeurs testiculaires bénignes rares. Il y a peu de littérature sur sa présentation parmi les Ghanéens et les Africains. Nous rapportons ici, le cas d’un Ghanéen de 27 ans qui s’est présenté avec une masse indolore à l’aine qu’il a décrite comme une sensation de « troisième testicule plus mou » qui s’est révélée être une hydrocèle enkystée après exploration chirurgicale. La littérature actuelle sur l’hydrocèle enkystée est revue et discutée.

Spermatic cord hydrocoeles (SCH) are rare benign testicular tumors. There is a paucity of literature on its presentation among Ghanaian and Africans. We contribute by reporting a case a 27-year-old Ghanaian who presented with a painless groin mass he described as feeling like a “softer third testicle’ that turned out to be an encysted hydrocoele after surgical exploration. The current literature on encysted hydrocoele is reviewed with a discussion.
Rafael Cervera (c. 1563-1633). Aproximación a la trayectoria social desde el discurso de un erudito de la primera Edad Moderna
Authors: Solias Huélamo Quim
Published: January 2024

Por la importancia de sus escritos y su erudición, Rafael Cervera (c. 1563-1633) fue uno de los mayores intelectuales catalanes del siglo  XVII, situándose como uno de los autores de referencia para la historia de Barcelona y Cataluña para muchos autores posteriores. En  este artículo voy a analizar la trayectoria vital del autor y los discursos que emitió en sus obras con el fin de indagar en sus contactos  políticos y culturales a fin de aportar un ejemplo de trayectoria social y de pensamiento de un autor de la Barcelona de la primera Edad Moderna, respondiendo también a otras diversas cuestiones que surgen de esta lectura del autor.

 

English title: Rafael Cervera (c. 1563-1633). An Approach to the Social Trajectory from the Discourse of a Scholar of the Early Modern Age

Due to the importance of his writings and his erudition, Rafael Cervera (c.1563-1633) was one of the greatest Catalan intellectuals of the  seventeenth century, becoming one of the authors of reference for the history of Barcelona and Catalonia for many later authors. In this  article I will analyse the author's life trajectory and the speeches he made in his works with the aim of exploring his political and cultural contacts in order to provide an example of the social trajectory and thought of an author from Barcelona in the early Modern Age, while  also answering a number of other questions that arise from this reading of the author.
The impacts of land use/cover changes on values of ecosystem service in Tul watershed, Northwest Ethiopia
Authors: Debie Ermias , Awoke Zemenu
Published: January 2024

There has been a rise in interest in the relationship between ecosystem service values and land cover change resulting from sustainable land management. Changes in land use/cover caused by soil and water conservation practices combined with plantation practices can have an impact on the values systems of ecosystem service. The study aims to address the issue of how changes in land use/cover influence ecosystem values in Ethiopia’s Tul watershed. To estimate ecosystem service values in the study watershed, the benefits transfer method of the modified value coefficient was used. The total ESV decreased by US$4.2 million between 1990 and 2010 while increasing by US$4.3 million between 2010 and 2021. The expansion of plantation practices in the watershed contributes to the improvement of the values of ecosystem service. The major ecosystem functions that influence changes in the ecosystem service values are climate regulation, erosion control, waste treatment, and the nutrient cycle. It is concluded that there needs to be scaled up the controlled management of natural forests and shrublands in steep slope areas, and sustainable plantation practices enhance the values of ecosystem service.
Exploring Christological Controversies in the Gondarine Period: The Significance of Amba Č̣ara Council and the Role of Täwahədo and Qəbat Monastic Clergies, 1622-1854
Authors: Admasu Bitwoded , Mekonnen Teferi , Sahile Sisay
Published: January 2024

This paper attempted to explores the nature of religious controversy among Täwahədo, Şäggočč, and Qəbatočč. It also tried to figure out its far reaching consequences on the state politics in the mid nineteenth century. Although religious controversy within the Ethiopian Orthodox Church was appeared following the advent of Catholic missionaries in the early sixteenth century, the issue was hot agenda during the first fourteen years of the episcopacy of Abunä Sälama III who was said to have deeply affected by theological disputes. The researcher used qualitative research methodology and consulted both primary and secondary sources. The findings of the research revealed that the empowerment of the metropolitan’s authority over the Ethiopian Orthodox Täwahədo Church by Emperor Tewodros II at the council of Amba Č̣ara led to the foundation stone for the termination of the factions which has great implication for the unity of the state. This council became a vital launching spring board for the Boru Meda synod that was held in 1878. Since the defeat of the various war lords silenced the religious factions that considerably enriched Sälamas space for action. Therefore, the pattern of relations which was established between Abunä Sälama III and Tewodros II at the council of Amba Č̣ara proved a guideline principle for succeeding rulers of Ethiopia.
The Gender Aspects of Agroforestry Practices in Maytemeko Watershed, Northwestern Ethiopia
Authors: Desta Meseret Kassie
Published: January 2024

This study was conducted to assess the gender aspect of agroforestry practices (AFPs) in terms of participation and benefit in northwest Ethiopia. An explanatory sequential research design of mixed method was employed to obtain and analyze the data required for the study. Household questionnaire survey which was collected from 138 randomly selected households, ethnographic observation and interview were used to collect data. The research result showed that though most women are implementing AFPs compared to their male counterparts, the number of trees and shrubs on farm plots are lower for women. At household level, women are taking highest responsibility to manage AFPs. It was also found that 40.3% (166.5 tons/year) of energy for cooking and heating is obtained from trees and shrubs grown in AFPs followed by natural forest wood sources (32.2% or 134 tons/year). The majority of the respondents (56%) confirmed that women and girls are responsible for fuel wood collection from the natural forest areas. In contrast, for those households who obtained the fuel wood from AFPs, men are most responsible to prepare the fuel wood. An average time which was needed to collect a bundle of fuel wood from natural forest area was four times more than the time needed to collecting the same amount of fuel wood from AFPs. This indicated that AFP is playing a crucial role in reducing the burden of women and girls by reducing the time and labor spent for fuel collection. Generally, implementing AFP is not only used to save the natural forest cover, but it also has an implication in gender balance for fuel wood collection. Thus, stressing the multiple benefits of AFP, agricultural extension workers should encourage farmers to plant trees on their farm lands by recognzing the gender aspects as well.
Socio-demographic characteristics and dietary pattern of community-dwelling adults in Abia State, Nigeria
Authors: O. Ukegbu Patricia , Ortutu Beulah , P. Chinaza Uche , Ojwang Alice
Published: January 2024

Objective: Identification of dietary patterns and their association with socio-demographic factors.Design: Community-based cross-sectional study designSetting: Urban and rural communities in Abia State, NigeriaParticipants: Eight hundred and sixty-eight (868) male and female adults aged 20 to 59 yearsMethods: Identification of Dietary patterns (DP) by Principal Component Analysis (PCA) based on the consumption of 10 food groups, assessed using a 7-day qualitative food frequency questionnaire. Bivariate and multivariate logistic regression analyses evaluated the association between identified patterns and socio-economic factors.Results: Two dietary patterns ‘traditional and convenience DPs were identified, explaining 52% of the total variance. The traditional DP was loaded with starchy staples, vegetable soups/sauces, and animal proteins. The convenience DP was characterised by high factor loading of processed cereals, carbonated drinks and alcoholic beverages. Larger households (>3) had lower odds of adhering to high traditional DP [AOR =0.633; 95% CI (0.429-0.934); p = 0.021]. Females [AOR =1.586; 95% CI (1.104-2.279); p = 0.013] and middle-aged adults (AOR = 1.750; 95% CI (1.075-2.848);p = 0.024] were more likely to adhere to the convenience DP, whereas, the odds of adhering to the convenience pattern was lower among adults residing in rural areas [AOR =0.3161.586; 95% CI (0.219-0.456); p = 0.001].Conclusion: Socio-economic variables (age, gender, household size and place of residence) were associated with dietary patterns among community dwellers in Nigeria.
Seed tuber cutting improves tuber yield of potato (Solanum tuberosum L,) varieties under irrigation conditions in Dangla district of Amhara Region, Ethiopia
Authors: Negash Addisu Muluken , Melak Tesfaye , Kolech Semagn Asredie
Published: January 2024

Potato (Solanum tuberosum L.) is an important cash and food crop in Ethiopia. However, lack of planting material and improved varieties are among the major factors affecting its productivity. Therefore, an experiment was conducted at Gayeta Kebele of Dangla district, Awi Zone, Northwestern Ethiopia to study the effect of seed tuber cutting on yield and yield components of potato varieties under irrigated conditions.  The experiment consisted of two improved varieties (‘Belete’ and ‘Jalenie’) along with one local variety and two tuber size categories and their half cuttings (whole large tuber (>75g), whole-medium tuber (39-75g), half cuttings of large tuber and half cuttings medium tuber. It was arranged with a factorial combination in RCBD with three replications.  Phenological, growth, yield and quality parameters were significantly affected by the main factors (cutting and variety). Whole-large and half-large tuber sizes and Belete variety showed superior performance on marketable (38.24 t ha-1) and total tuber yield (40.26 tha-1) over the rest of the tuber sizes and varieties. The combination of Belete variety with whole-large seed tubers recorded the highest net benefit 261,516 ETB ha-1 with an acceptable marginal rate of return (113.6%). The second highest net benefit (247,001.3 ETB ha-1) with an acceptable marginal rate of return (2566.67%) was recorded when Beltete variety was planted using half-large cut tubers. Hence, Belete variety with whole-large seed tubers, and half-large cut tubers could be recommended for resource-rich and poor farmers, respectively, for the production of potatoes under irrigated conditions in Gayeta kebele and areas with similar agro-ecology. Repeating the research in different seasons and locations is also recommended.
Participation and inclusion of people with disability in trade and employment
Authors: Musa Christian Mgaya
Published: January 2024

Gender and inclusion has been a talk of town. We have always been hearing about women and trade, the role of women in trade, women and employment. However, currently inclusion is a crosscutting issue that looks at a number of variables that unfortunately are used to distinguish one person from another. These include disability, age, race, gender, social status (marginalized vs the well-off) and other factors. Inclusion for people with disability in different areas of life such as in trade and employment has a new wave. Inclusion is geared to do away with every sort of “inequality” in human life in particular with all conducts that negatively affect people with disability and the marginalized ones. The inequality that we are fighting today embraces many different dimensions, as testified by current debates on social, political, economic, gender, educational, race, and health inequality. This inequality in human life dates back to industrial revolutions with the raise in trade and commerce. In ordinary thinking, one may say trade makes employment but may wonder why has growth in trade led to inequality. The most intriguing question remains why inequality in trade and employment?
 
How to cite this article using ASWNet style
Mgaya, M. C. (2023). Participation and inclusion of people with disability in trade and employment. People centred – The Journal of Development Administration (JDA), 8(2), 44-46. https://dx.doi.org/10.4314/jda.v8i2.4                       
This article was based on a presentation at the Epilepsy Alliance Africa Day Indaba on 25 May 2023.     
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Enhancing the resilience of the orphans using the Ubuntu philosophy: A case of Marange community in Zimbabwe
Authors: Maurice Kwembeya
Published: January 2024

The aim of the study was to enhance resilience among the orphans using the Ubuntu philosophy. The study adopted the descriptive design as it allowed the participants to describe felt distress. The study population was drawn from Marange district in Manicaland province in Zimbabwe. Purposive sampling technique was used in the study. The auto biological questionnaire was used to elicit the participants’ information. The provided information included the participants’ age, sex and orphan hood status as either double or single orphaned. A sample size of 15 participants was determined by the saturation level which occurred when similar responses were repeated by the participants. Data were collected using semi- structured interview questions and content data analysis was used. The community members served as protection factors against challenges experienced by the orphans. The shared cultural philosophy of Ubuntu invigorates the sense of belonging and confidence among the orphans.

How to cite this article using ASWNet styleKwembeya M. (2023). Enhancing the resilience of the orphans using the Ubuntu philosophy: A case of Marange community in Zimbabwe. People centred – The Journal of Development Administration (JDA), 8(3), 50-58. https://dx.doi.org/10.4314/jda.v8i3.1

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An appraisal of Nigeria's foreign policy role in Africa's development, 2010-2022
Authors: Nzewigbo, Adaora Appolonia
Published: January 2024

Nigeria's foreign policy is a strategic instrument intricately woven into the fabric of its national interests. Since its independence in 1960, Nigeria has steered an external strategy with the African continent at its nucleus, emblematic of its steadfast commitment to nurturing stability and prosperity across Africa. Through varying administrations, the Nigerian government has consistently upheld the core tenets of its foreign policy, steadfastly adhering to its Afrocentric orientation. This study examined Nigeria's foreign policy's role in the developmental trajectory of Africa during the period from 2010 to 2022. Employing a qualitative methodology, it harnesses secondary data from a comprehensive review of esteemed academic sources, including textbooks, scholarly journals, authoritative reports, and online repositories. Systems theory was applied to guide the research. The findings clearly illustrate Nigeria's pronounced contributions through its Afrocentric foreign policy paradigm – engendering unity, catalysing collaboration, nurturing peace and stability, and directing developmental resources to regions characterized by harmonious relations. Ultimately, this study illuminates the comprehensive spectrum of Nigeria's impact on Africa's developmental odyssey, ranging from active regional leadership participation to counter-terrorism endeavours and poverty abatement. Consequently, this research advocates for a sustained optimization of Nigeria's contributions, thereby fortifying internal tranquillity and urging a meticulous evaluation of the underlying socio-political tensions within Nigeria.Nzewigbo A. A. (2023). An appraisal of Nigeria's foreign policy role in Africa's development, 2010-2022. People centred – The Journal of Development Administration (JDA), 8(3), 57-67. https://dx.doi.org/10.4314/jda.v8i3.2

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Social factors contributing to harmful child vending practices among children in Zimbabwe: The case of Epworth
Authors: Magavude Tafadzwanashe James
Published: January 2024

The study explored the social forces behind harmful child vending practices in Zimbabwe. The research was triggered by an observation that vending has become one of the most menacing challenges among children in Zimbabwe. The objective of the study was to explore social factors contributing to child vending in Zimbabwe. This research was informed by the Ubuntu-oriented Social Work, Welfare and Development Theory. A number of previous studies that focused on the same subject and age-group were consulted. The research utilized qualitative research methodology, in which four key informants were purposively selected for interviews and the convenience sampling (used to get the 12 child vendors who participated through in-depth interviews) and also the 6 community members (whom the researcher interacted with through focus group discussions). The research findings revealed that poverty is a leading factor forcing children in Zimbabwe to engage in vending. The research also revealed that some of the factors contributing to child vending include, child abandonment, orphanhood, bad modeling, and misinformation. The study recommended collaborative efforts to be made between government and other stakeholders in coming up with interventions to support children subjected to vending and other harsh conditions.How to cite this article using ASWNet styleMagavude T. J. (2023). Social factors contributing to harmful child vending practice among children in Zimbabwe. The case of Epworth. People centred – The Journal of Development Administration (JDA), 8(3), 75-82. https://dx.doi.org/10.4314/jda.v8i3.4

Visit journal website: https://jda.africasocialwork.net
Evaluation of Bioactive Agents in Calotropis Procera Plant Parts Through Anti-Microbial, Proximate, and Antioxidant Studies.
Authors: Ogwuche C E , Odeja O O
Published: January 2024

Successive extraction of the aerial plant parts of Calotropis procera using soxhlet extraction yielded the phytochemicals; saponins, alkaloid, tannins, phenol, flavonoids, anthraquinones, and glycosides. Bioassay analysis using standard procedures like Mueller Hinton dilution experiment, demonstrated antibacterial potentials against microbes. E. coli, C. albicans, S. aureus, S. pyogenes, P. aeruginosa, S. typhi, and C. stellatoidea. 27 mm to 41 mm indicated  zones of inhibition range. The MBC and MFC for all the microorganisms were at 25 mg/ml except for S. pyogenes which was at 12.5 mg/ml. The MIC for the most sensitive organisms was 12.5 mg/ml with the exception of P. aeruginosa and S. pyogenes which had theirs at 6.25 mg/ml. Proximate analysis used standard AOAC method, and in antioxidant analysis, free radical scavenging method of 2, 2-diphenyl-1-picryl-hydrazyl (DPPH) were employed. The results are as follows, proximate analysis revealed the percentage contents of fat, crude fiber, protein, ash, and carbohydrates to be 2.93, 7.05, 1.68, 56.50, and 18.69, respectively. In the antioxidant studies, free radical scavenging technique employing 2, 2-diphenyl-1-picryl-hydrazyl (DPPH) was used. Samples and standards were determined using the IC50. The active sample was hexane extract, with an IC50 of 0.0878, followed by ethyl acetate (0.8811) and methanol (0.9215).
Commentary : The correct names of Old World vultures and their sequence
Authors: Mundy Peter. J.
Published: January 2024

No abstract
Conference Report : The 15th Pan African Ornithological Congress, 21-25 November 2022 – A vulture perspective
Authors: Slater Clive , Mundava Josephine
Published: January 2024

No abstract
MAXIMUM WORKING WELLHEAD PRESSURE AS AN INDICATOR OF THE PRODUCTIVITY OF A STEAM-LIFT WELL
Authors:   Mining Institute of the Far Eastern Branch of the Russian Academy of Sciences, SHULYUPIN A.N. , VARLAMOVA N.N. ,   Mining Institute of the Far Eastern Branch of the Russian Academy of Sciences
Published: January 2024

The possibility of estimating the productivity of a geothermal well operating in the steam-lift mode without measuring flow parameters is considered. An evaluation technique based on mathematical modeling of the flow in the wellbore is proposed. The methodology involves the use of parameters required for determination at the end of well construction and the value of the maximum working wellhead pressure, which can be determined during the initial production process, for the calculation.
JUSTIFICATION OF THE WIDTH OF THE SECURITY PILLAR BETWEEN THE DISMANTLING CHAMBER AND THE OPERATING OPENING WORKINGS
Authors:   Siberian State Industrial University, NIKITINA A.M. , RIB S.V. , BORZYH D.M. ,   Siberian State Industrial University
Published: January 2024

The article presents the results of studies carried out on the 7-7a formation at the Raspadskaya mine in Kuzbass. The width of the guard column of inclined workings has been clarified by calculations. The parameters of the reference rock pressure in the stop zone of the cleaning face are determined, which is the most important factor in the further formation of the dismantling chamber by the cleaning face.
ON THE PROBLEM OF DEVELOPING THE EXPERIMENTAL AND ANALYTICAL FOUNDATIONS OF THE THEORY OF INTERACTION OF GEOMECHANICAL AND PHYSICAL AND CHEMICAL PROCESSES DURING THE MINING OF COAL DEPOSITS
Authors:   Chinakal Institute of Mining Siberian Branch Russian Academy of Sciences, OPARIN V.N. , KACHURIN N.M. ,   Tula State University, KIRYAEVA T.A. ,   Chinakal Institute of Mining Siberian Branch Russian Academy of Sciences, POTAPOV V.P. ,   Federal Research Center for Information and Computational Technologies
Published: January 2024

The article is devoted to the problem of safe subsoil use of the Earth in the increasingly complex mining-geological and natural-climatic conditions, the increase in the depth and scale of the developed mineral deposits of various types and phase state. It is shown that in our country such achievements in the direction of fundamental and applied research and development are related to establishing general formation mechanisms and evolution features of focal zones of increased stress concentration and destruction rock masses and geomaterials with block-hierarchical and multiphased structure; these geomaterials have properties of open self-arranging geosystems in tectonic field of stress and strain. Based on modern achievements of non-linear geomechanics and geophysics, cloud information technologies of BigData, the new (energetic) methodological approach and corresponding methods have been justified, as well as technical (measuring) means and software complexes for formation multilayered geoinformation monitoring system for diagnostics control and prediction of industrial and ecological safety at strategically important mining areas in Siberia, which has been approved in field conditions (Kuzbass, Norilsk and Novosibirsk Region).
INTERACTIONS OF NONLINEAR GEOMECHANICAL AND GAS EXCHANGE PROCESSES DURING EXHAUSTMENT HYDROCARBON FIELDS
Authors:   Chinakal Institute of Mining Siberian Branch Russian Academy of Sciences, OPARIN V.N. , KIRYAEVA T.A. ,   Chinakal Institute of Mining Siberian Branch Russian Academy of Sciences, KACHURIN A.N. ,   Tula State University, YUSHKIN V.F. ,   Chinakal Institute of Mining Siberian Branch Russian Academy of Sciences
Published: January 2024

In the canonical scale of hierarchical representations V.N. Oparin was first introduced and successfully verified by A.S. Tanaino is a generalized indicator of a quantitative description of the petrographic properties of coals, using which a classification is given and the distribution of petrographic groups of coal seams in the Kuzbass regions is described. This is important not only for mapping sections of mine fields when identifying potentially hazardous zones for emissions of coal, rocks and gas, but also for geotechnological zoning based on the most important physical and chemical properties of the productive properties of the rock massifs being mined.
ON ONE PROBLEM OF OPTIMAL CONTROL OF VIBRATIONS OF A PLATE-STRIP IN A TEMPERATURE FIELD
Authors: Grigoryan Edmon R.
Published: January 2024

The problem of optimal control of elastic vibrations of an isotropic plate-strip under the influence of temperature and force fields is studied. The function of changing the external load on the plane of the plate is represented as a control function. Optimal control is also carried out by the distribution function of the temperature of the external field over the plate. The well-known classical hypotheses of thermo-elastic bending of the plate are accepted. The equations of transverse vibrations of the plate and heat conduction in the plate are solved under the boundary conditions of heat transfer and the stress state on the planes of the plate. The method of Fourier series, the method of representing moment relations, the well-known method of minimizing the functional are used.
An Ostrowski Type Tensorial Norm Inequality for Continuous Functions of Selfadjoint Operators in Hilbert Spaces
Authors: Dragomır Sever
Published: January 2024

Let H be a Hilbert space. Assume that f is continuously differentiable on I with ‖f′‖_{I,∞}:=sup_{t∈I}|f′(t)|
Adequate Funding Panacea for Development of Educational Administration and Planning Programme in Tertiary Institutions in Nigeria
Authors: Ogunade Niyi Jacob , Mohammed Yahaya Danjuma
Published: January 2024

This paper discussed adequate funding panacea for development of educational administration and planning programme in tertiary institutions in Nigeria. Secondary data were used in the paper. The secondary data were collected from print and online publications. The paper noted that adequate funding of educational administration and planning programme in tertiary institutions will lead to availability of funds for effective administration of educational administration and planning programme, employment of adequate academic staff, provision of modern infrastructure facilities, effective staff training, provision of adequate instructional materials and development of research in educational administration and planning programme. Based on the points identified in the paper, the paper hereby recommended that the governments should increase budgetary allocation for tertiary institutions and preference should be given to educational administration and planning programme which will lead to adequate funds for effective administration, employment of adequate lecturers and provision of infrastructure facilities, instructional resources and development of research programme in educational administration and planning programme.
Robotic means of rehabilitation of motor activity of patients in the post-stroke period
Authors: Zemlyakov IYu , Zhdanov DS , Bureev ASh , Golobokova EV , Kosteley YV
Published: January 2024

Stroke prevalence is one of the most acute problems in the medical and social aspects of society: strokes are the second most common in the mortality statistics of the population. In the Russian Federation, stroke occurs annually in almost 500,000 people and is the first among the causes of death from neurological diseases and the second most common cause of death after heart disease. The most common consequences of stroke are motor disorders of varying severity, manifested as changes in muscle tone, paresis and paralysis, and impaired walking function. This paper is an overview of the current state of robotic rehabilitation devices used for post-stroke limb paresis and of expected trends of their development. The existing variants of their construction, conditions of kinesiotherapy sessions for obtaining the greatest effect are considered. The authors are of the opinion that the nearest prospect for the development of high-tech devices of this type is not only complex stationary universal complexes for clinics, but also simple mobile specialized simulators with remote medical control for outpatient use.