bluuebunny/crossref_metadata_2025 huggingface dataset:
First record of the leafhopper tribe Phlepsiini Zahniser et Dietrich (Hemiptera, Auchenorrhyncha, Cicadellidae: Deltocephalinae) from tropical western africa
Authors: Gnezdilov V. M.
Published: April 2024

The tribe Phlepsiini Zahniser et Dietrich, 2013 (Cicadellidae, Deltocephalinae) is recorded for the rst time for the leafhopper fauna of tropical western Africa after the series of specimens of Korana rorulenta (Stål, 1855) from Guinea-Bissau.
A new genus and species of the cicadina from australia belonging to a new subtribe of the tribe Risiini (Homoptera, Dictyopharidae)
Authors: Emeljanov A. F.
Published: April 2024

Описан второй представитель трибы Risiini из Австралии - новый вид и род Deuterrisius tobiasi gen. et sp. n., близкий к единственному до сего времени известному представителю австралийских Risiini - Austrorgerius collinus Woodward. Отмечается проблематичность положения трибы Risiini в сем. Dictyopharidae.
New and little-known in the russian fauna beetles (Coleoptera) from the south of Primorskii territory
Authors: Makarov K. V. , Sundukov Yu. N. , Korotyaev B. A.
Published: April 2024

Data on 17 species from seven families of the Coleoptera from the south of Primorskii Territory are provided. Six species, Pterostichus lutschniki (Carabidae), Silvanolomus brevis (Silvanidae), Tritoma gangwonensis (Erotylidae), Serangium contortum (Coccinellidae), Chilopeltis laevipennis (Salpingidae), Xanthalia serrifera (Tenebrionidae), and genus Caenocryptorrhynchus Morimoto (Curculionidae) with a new species C. zherichini Korotyaev, sp. n., are recorded for the Russian fauna for the rst time. New data are provided for eight rare or little-known species of the Russian fauna - Anchomenus leucopus , Euplynes batesi , Chlaenius suvorovi (all Carabidae), Sumnius nigrofuscus (Coccinellidae), Salpingoides thoracicus , Salpingus depressifrons , Lissodema plagiatum (all Salpingidae), and Shirahoshizo rufescens (Curculionidae). For the species new to the Russian fauna, di erential diagnoses or keys are provided.
A new subgenus of the genus Sphenoptera Dejean, 1833 with re-description of S. epistomalis Obenberger, 1927 (Coleoptera, Buprestidae)
Authors: Kalashian M. Yu. , Volkovitsh M. G.
Published: April 2024

A new subgenus Clypeostetha subgen. n. is erected for the jewel beetle Sphenoptera epistomalis Obenberger, 1927 from North-Western and Western Kazakhs tan and northwestern Uzbekistan ( rst country record). Principal diagnostic characters of the new subgenus and illustrated re-description of S. epistomalis together with data on its distribution and host plant are presented. The main diagnostic character of Clypeostetha is the absence of the clypeal suture separating clypeus from frons in all other known Sphenopterini.
Council code and the socio-political evolution of Russia in the second half of the 17th century
Authors: Arakcheev Vladimir Anatol'evich
Published: April 2024

The article is devoted to the study of the place of the Sobornoje Ulogenie Code in the evolution of social institutions in Russia by studying the legislative activity of the government and administrative practices. The purpose of the study is to find out where the gap lay to a greater extent, and where the continuity can be traced in the system of state building and law - between the law of the 1620s-1640s. and the Code, or between the Code and the law of the second half of the XVII century. It is concluded that the continuity can be traced to a greater extent between the law of the 1620s-1640s. and the Council Code, which inherited from the previous legislation a set of legal norms that were revised and generalized in the new code of laws. The legal norms of the Code and new decree articles, including the concept of a crime against the state, a ban on the reception of fugitives, and the reconstruction of settlements, adopted in the second half of the 17th century, were formed by reworking the previous legislation. The evolution of the system of state building and the legal registration of the social class structure of society in the second half of the 17th century was of a discrete nature. Many essential segments of law in the Code are declarative and lack legal and technical tools: the proclaimed indefinite investigation of fugitive peasants could not be effectively implemented without an established system of state investigation, which arose only in the 1660s. The vast majority of articles of the Code were significantly changed in the legislation of the second half of the 17th century; these changes affected the norms describing the estate-class structure of society, including the forms of exercising the rights of the ruling elite to serfs, the rights and status of townspeople and other categories of taxable people.
Fish resources of the peasant economy of the North-West of Russia according to the materials of the General land surveying
Authors: Stepanova Liliya Gennad'evna
Published: April 2024

The article evaluates the fish resources of the North-West of Russia at the end of the XVIII century. For centuries, fish has significantly supplemented the diet of the population of the North-West of Russia. However, until now, historiography does not have complete data on the fish resources of this territory in previous eras. The study was carried out on the basis of Economic notes to the materials of the General Survey of the end of the XVIII century. It analyzes information about the quantitative and species composition of fish in the territory of St. Petersburg and Novgorod provinces. Databases for individual counties were compiled to assess fish resources. For the first time, a complete processing of the information of the Economic Notes for a particular area was carried out, allowing to take into account all available records on the species and number of fish.
The search for a solution to the peasant question in Russia in noble projects of the late 18th - mid 19th century
Authors: Dolgikh Arkady Naumovich
Published: April 2024

The article is an analysis of quite mass sources - noble projects of solving the peasant question in Russia during the reign of Paul I, Alexander I and Nicholas I. It examines trends in the development of ideas related to the existence of serfdom in the country and the search for a way out of the status quo, undertaken by representatives of various factions of the ruling class of the empire. The conclusions of the article significantly complement the picture of the noble public opinion of this era.
Agricultural reforms in Russia at the turn of an era (1990-1993)
Authors: Malkhozova Fatima Viktorovna
Published: April 2024

In the second half of the 1980s, Soviet agricultural policy was subjected to revisionism. The problems in the agro-industrial complex had been accumulating for many years and were the result of many factors associated with the socialist system in the USSR. Whereas in the 1930s agriculture was subject to forced collectivisation, the new conditions proposed the revival of independent peasant farms and the adoption of Western experience associated with the development of farming. Private property and the future of collective farms were at the centre of the debate. This article attempts to find the following questions: why were the agrarian reforms necessary; what was their purpose; did the country's leadership have an agenda for reforms; how did the economic, legal and social aspects interact in the reform process; did the reforms succeed in achieving their objectives. The article uses documents from the Congress of People's Deputies, the Supreme Soviet and the Russian Government. Significant static material and data from sociological surveys should be noted. Legislative acts constitute a separate group of sources.
Cities of the Russian North in the 1620s-1640s: possibilities and limitations of statistical methods
Authors: Liseitsev Dmitry Vladimirovich
Published: April 2024

The article is devoted to the dynamics of the economic development of the Russian North in the 1620s-1640s. The involvement of sources on the amount of customs and tavern fees allowed us to trace the gradual growth of treasury revenues received from the cities of the North. At the same time, the increase in budget fees led to the ruin of the local population and the growth of social tension.
Private enterprise in logging in 1919-1921: the idea of the center and the opposition of the regions
Authors: Voyeikov Evgenij Vladimirovich
Published: April 2024

The article considers the policy of the Main Forestry Committee of the Supreme Economic Council on attracting private capital for firewood harvesting to combat the fuel crisis in 1919-1921, which has not been studied in the scientific literature. The research is based mainly on archival materials introduced into scientific circulation for the first time, and media publications of this period. The author used the materials of two central (GARF and RGAE) and four regional (Penza, Samara, Saratov, Ulyanovsk regions) state archives. The struggle of regional leaders against the ill-conceived policy of the center for the introduction of private capital for logging is shown. The conclusion is made about the fallacy of the widespread use of private entrepreneurs without taking into account local conditions for logging in the provinces of European Russia in an extreme situation of the economic crisis.
"Russification" of the Soviet architecture in 1930-1940s: ideology, theory, practice
Authors: Pechenkin Ilia Evgen'evich
Published: April 2024

The article is dedicated to attempts to construct "national in form, socialist in content" architecture in the Stalinist USSR. In course of a campaign to appropriate the classical heritage, these attempts did not acquire the character of a clear and well-structured policy. However, being themselves a reflection of ideological trend towards Russian nationalism in the pre-war and war years, they influenced the ideas about the historical role of Russian architecture as well as the worldview of architects and the appearance of specific buildings.
Survival strategies of the moscow militia encircled and in the occupied territory in the autumn-winter of 1941-1942
Authors: Drozdov Konstantin Sergeevich
Published: April 2024

In the article, based on unique archival documents - transcripts of conversations with former militias who were promoted in subsequent years, as well as post-war memoirs, an attempt was made to reconstruct the survival strategies and behavior patterns of Moscow militias in extreme conditions of the environment, a breakthrough from it and living in the occupied territories of Smolensk and Moscow in the autumn-winter of 1941-1942.
Church charity during the first world war
Authors: Leontieva Таtiana Gennad'evna
Published: April 2024

The article presents the charitable activities of the Orthodox clergy and laity during the First World War. Based on a wide range of sources and studies, various practices of providing assistance to wounded and maimed soldiers, prisoners of war, refugees, and members of soldiers' families are shown. At the same time, various public reactions to the role of the Orthodox Church in mobilizing the rear and consolidating the population for the successful conduct of the war are emphasized.
Finance minister I. A. Vyshnegradsky and the famine of 1891-1892
Authors: Stepanov Valerij Leonidovich
Published: April 2024

The article provides an overview of the activities of the Minister of Finance of the Russian Empire I.A. Vyshnegradsky aimed at overcoming the consequences of crop failures of 1891-1892 and the disorder of public finances. Such measures as the allocation of significant funds for the purchase of bread for the starving population, the reduction of railway tariffs for the transportation of goods to the affected provinces, the provision of benefits to borrowers of state-owned credit institutions, the prohibition of grain exports abroad, the organization and conduct of public works, the additional issue of credit cards to fill the channels of monetary circulation, the conclusion of an external "golden" loan, limiting departmental spending in order to reduce the budget deficit, stop the fall of the ruble and Russian securities. It is concluded that, despite some shortcomings and failures of anti-crisis policy, government measures have played a significant role in the fight against hunger.
Misuse and punishment: corruption of regional leaders of the USSR in 1946-1952
Authors: Fedorov Aleksey Nikolaevich
Published: April 2024

The article on the basis of documents of the Central Committee Secretariat of the CPSU reveals the scale and main types of abuses of regional leaders of the USSR in the first post-war years. It is shown that the Central Committee received information about the corruption of the first secretaries of regional party committees and chairmen of regional executive committees from various sources and considered it in ordinary order. In most cases, the Central Committee either did not punish regional leaders for abuses, or imposed on them mild party punishments that did not affect their careers. Dismissal, expulsion from the party and criminal prosecution were rarely used and, as a rule, under the influence of political circumstances.
Formation of soviet sports diplomacy: structures and practices
Authors: Glushich Anton Mikhaylovich
Published: April 2024

The article is devoted to the formation of a new foreign policy practice - sports diplomacy - in the USSR in the 1920s. The key documents that established the order of interaction of sections within the Red Sports International, as well as Soviet athletes with the external environment, are analyzed. These resolutions clearly reflected the contradictions in the accents of the activities of the RSI and the SCPC: the aspiration for mainly propaganda work and the consolidation of the labor movement collided with the desire to raise the competitive level of Soviet sports. Despite these contradictions, in the 1920s it was possible to unify the practice of international work-sports interaction, to make it systematic. The evolution of working methods has been studied: both competitive forms of interaction and non-competitive practices - patronage and socialist competition. It is shown that the tools of sports diplomacy of the USSR in the first decade of its existence were not static, it changed in accordance with new tasks and challenges - from overcoming foreign policy isolation to strengthening the internal structure of the movement and the formation of self-defense squads by foreign sports clubs. The circle of interaction of the RSI and the SCPC with supranational organizations and Soviet institutions of power is defined. Intensive ties with the CEC, the PCFA and the Soviet embassies, which provided financial support, accelerated visa issuance, as well as advisory assistance, indicate a great attention to foreign policy sports contacts of the highest state bodies of the USSR. The conclusion is made about the formation of a systematic and regular practice of sports diplomacy of the Soviet state since the early 1920s.
Culture policy of the russian rightists at the beginning of the 20th century
Authors: Ivanov Andrey Aleksandrovich
Published: April 2024

The article examines the cultural policy of the Russian right-wing parties and unions of the early XX century. Attention is drawn to the perception of the leaders of monarchical organizations of the processes that took place in various spheres of the cultural life of the Russian Empire. The article analyzes the speeches of right-wing politicians and publicists on literature, theater, and cinema. The efforts of the right-wingers in popularizing the spiritual, scientific and cultural heritage, historical achievements of the Russian people, glorification of its heroes are shown. The specifics of cultural events held by monarchists are revealed. It is proved that the leaders of the Russian right-wing parties focused their efforts not only on criticizing the processes and phenomena in culture and art that disturbed them, but also sought to reverse the situation in this area themselves.
«pan-Turkism» in archival sources of stalinism (1944-1953)
Authors: Guseva Julia Nikolaevna , Senyutkina Olga Nikolaevna
Published: April 2024

The article is devoted to the process of constructing and presenting the narrative "pan-Turkism" in archival sources of the Main Archival Department (Glavnoe Arhivnoe Upravlenie, GAU) of the NKVD-Ministry of Internal Affairs of the USSR in 1944-1953. The analysis of the content, stylistics and process specifics of the archivists' work with documentary materials of the imperial and Soviet periods reflecting the "pan-Turkist" problems is carried out. One of the important conditions for the inheritance of the imperial tradition of constructing the "pan-Turkist danger" and the image of the enemy-the "pan-Turkist" was the effect of the information echo chamber that arose when the GAU was transferred to the state security agencies.
«Method is an intellectual machine for the production of knowledge»
Authors: Borodkin Leonid Iosifovich
Published: April 2024

The article examines the role of Academician I.D. Kovalchenko in the process of formation and development in the USSR/Russia of an interdisciplinary field of historical studies called “Quantitative history”. Materials from the prominent historian’s personal archive are used as the main source.
The Punishment Intensity for Research Misconduct and Its Related Factors: An Exploratory Study on Hospitals in Mainland China
Authors: Tang Gengyan
Published: April 2024

Previous studies (Long et al. 2023) have found that factors such as gender and academic positions do not influence the severity of administrative actions taken by institutions. However, this study provides inconsistent evidence; it focuses on incidents of research misconduct in hospitals across Mainland China, exploring factors related to punishment through a large cross-sectional dataset (_N_=815). Regression analysis revealed a significant correlation between authorship order and the punishment intensity (_p_<0.05). Under specific conditions, there was a significant correlation between professional title (senior) and punishment intensity (_p_=0.001), and an interaction between professional title and types of research misbehavior. Further analysis of simple effects showed that, in cases of fabrication and falsification, and combinations of multiple research misbehavior, researchers with senior titles received significantly lighter punishments compared to those with junior, intermediate, and associate senior titles (_p_<0.05). The study unveils potential accountability patterns (collective accountability and tiered punishment) that may be adopted by hospitals in Mainland China, as well as the challenges faced in ensuring fairness, emphasizing the importance of independent investigative bodies for incidents of research misconduct and advocating for fairness as a priority in governance of research misconduct.
NURSE PERFORMANCE INFLUENCES DOCUMENTATION SUCCESS IN IMPLEMENTING DISCHARGE PLANNING IN INPATIENT CARE AT THE HOSPITAL IN BANJARMASIN
Authors: Amaliah Noor , Noor Hadijah  , Zainal Aripin
Published: April 2024

Nurse performance is an activity in implementing authority, duties and responsibilities in order to achieve the main tasks of the profession and organization. Discharge planning is a stage that has the goal of preparing the patient during the post-treatment transition period so that he can return home. Purpose of this study in general was to determine the corre. lation between nurse performance and successful documentation in the implementation of discharge planning at inpatient care at  Hospital, Banjarmasin. Method this research is quantitative by using infants and post-partum care, totaling 6,5 executive nurse. in taking the simple Random Sampling Technique. Result. Thus it can be concluded that there is a correlation between the performance variables of nurses and the implementation of discharge planning in the inpatient care of  Hospital, Banjarmasin. Health services are expected to always improve the performance of good nurses for health services, especially nurses in implementing discharge planning for patients, nurse performance is very important in completing nursing tasks such as implementing discharge planning in hospitalization. In order to create good quality for the quality of health services in hospitals.
Deep SORT Related Studies
Authors: Majid Abdul , Qinbo Qinbo , Saba Brahmani
Published: April 2024

Computer vision is the field of computer science in which computers are made capable to see and recognize like human being. Deep learning is using multiple layers for the purpose of understanding and recognizing various objects. Deep Simple Real Time Tracker is the area in which the objects are tracked in real time from multiple images and videos. Many researchers have contributed to the field and various algorithms have been proposed. The current study presents the deep SORT related studies in which the various algorithms have been presented for the sake of understanding and starting point for the researchers interested in computer vision and deep sorting. The single shot detection, feature extraction, have been explained along with the research conducted. Feature selection and extraction, matching recognition, object tracking through frames have been appended to the current study.
Resume Screening using Machine Learning
Authors: Dr. Sandeep Tayal  , Sharma Taniya , Singhal Shivansh , Thakur Anurag
Published: April 2024

This study explores the utilization of Machine Learning (ML) and Natural Language Processing (NLP) in automating the resume screening process. Traditional methods, often manual and subjective, fail to efficiently manage the volume and variety of resumes. By employing NLP techniques like named entity recognition and part-of-speech tagging, coupled with ML classifiers such as K-Nearest Neighbors and Support Vector Machines, we propose a system that enhances the precision of candidate selection while significantly reducing time and effort.
Fungal Diversity in Wet and Dry Ripe Plantains: Isolation, Identification, and Implications for Public Health
Authors: I. C. Adekanmbi  , A. P. Ogunsakin  , P. O. Fabowale
Published: April 2024

The persistent inadequacy of storage facilities in in globally and more prevalent in developing nations leads to substantial annual losses of harvested agricultural produce, severely impacting the economic stability of local farmers. This investigation focuses on the critical public health implications arising from the fungal contamination of stored plantain chips, a delicacy snack in Nigeria, West Africa. Notably, the fungal species isolated, which are Aspergillus flavus, Aspergillus niger, Penicillium chrysogenum, Saccharomyces cerevisiae, Aspergillus fumigatus, Fusarium spp., Rhizopus stolonifer, and Mucor spp. are critical from a public health perspective. Species such as Aspergillus flavus and Aspergillus niger are particularly concerning due to their capacity to produce aflatoxins, which are among the most carcinogenic substances known and have been linked to liver cancer and immune system suppression. The prevalence of these mycotoxins not only compromises the nutritional integrity and safety of the plantain chips but poses severe risks to consumers, highlighting a broader issue of food security and safety. This study brings to the fore the pressing need for interventions that enhance the storage conditions and decrease fungal contamination, thereby reducing the exposure of the population to mycotoxins. The implications of this research extend beyond the economic damage to encompass significant public health concerns, emphasizing the critical need for regulatory, technical, and infrastructural developments to uphold the microbial quality of plantain both in wet and dry states, ensuring safe consumption.
The Role of Technology in Higher Education : Exploring Current Trends and Challenges in Life Sciences Teaching and Learning
Authors: Thaware Vivek Hanmantrao
Published: April 2024

One of the key elements of India's 2030 strategy for sustainable development is high-quality education. It seeks to guarantee all students receive a high-quality, inclusive education. Digital technology has become a vital instrument in accomplishing this objective. Digital technologies aim to increase productivity and efficiency while reducing or eliminating waste and pollution. Both students' and teachers' lives have been made easier by technological advancements in education. Students today employ a variety of software and tools to develop presentations and projects with the aid of the internet, as opposed to writing by hand. This survey studywas conducted during September 2023 to December 2023 that looks into how life sciences are now taught and learned in higher education, with an emphasis on how technology is being used in the classroom. In order to obtain understanding of the application of technologically improved teaching techniques, difficulties encountered, and new trends in life sciences education, the study looks at the views of both faculty members and students also this survey research explores the contemporary patterns influencing the use of technology in life sciences education.
Othermothering in a Community-Led Afterschool Program
Authors: Winfield Jake D. , Pressimone Beckowski Catherine , Fiorot Sara , Daniels Dominique , Davis James Earl
Published: April 2024

We examine a community-led afterschool program designed by Black women for Black youth from a low-income community through the lens of othermothering. Through interviews and focus groups exploring a multi-year community–university partnership in a large northeastern city, we find that the Black women staff-centered community needs to drive programming activities, provided wraparound supports for families, and created a familial environment within the program. We argue that these practices fostered a culturally relevant afterschool program that was driven by the knowledge and practices of Black women in the community. Supporting minoritized communities to enact their own culturally relevant afterschool programs may lead to the establishment of unique programs that view communities as assets instead of sites of domination.
The preface has formed an important position in the poetry of the poet Abdul Zahra Zaki. It serves as a middle threshold linking the author’s domain with the text’s domain, preparing the situation for the transition and crossing into the texts’ domain of
Authors: Khalil Alaa Hameed
Published: April 2024

The preface has formed an important position in the poetry of the poet Abdul Zahra Zaki. It serves as a middle threshold linking the author’s domain with the text’s domain, preparing the situation for the transition and crossing into the texts’ domain of the reader. The writer borrows a saying, a line of poetry, a famous idea of a philosopher, thinker, or poet, or a personal saying authored by the writer himself to assert his presence and issue his literary discourse. It is an important gateway among those that the reader employs to enter the atmosphere of the text and its spaces and layers, contributing to the unlocking of many codes in the textual content. The poet recognizes the value of the beginning in the text, which the preface prepares for, as the beginning has a complete image through which he paves the way for the entire victory. Similarly, we find that the external preface (Arabic and foreign) contributes actively and with high methodical intentionality to constructing the poem, drawing his poetic texts in light of the role of these texts’ thresholds.
The aesthetics of the metaphorical image of Imam Hussein (peace be upon him) in Andalusian literature (Almuahadins era as an example)
Authors: Madhul Moshreq Shaban , Hassanalian Dr. Somayeh
Published: April 2024

The poetic image is considered an essential pillar of the literary work, and a very important structural element for studying the essence of the poetic text. It is the most prominent tool that enables the critic to explore the poet’s experience and psychological formation, and a standard for measuring his talent and judging him. It has received the attention of critics and scholars, and received a wide range of controversy. And research, with its flexible nature, interconnected connections, and the multiplicity and diversity of its descriptive structures.

Metaphor is one of the most prominent mechanisms for creating the poetic image, and the formal means that almost all critics agree upon, including the ancient Arab critics, who celebrated the poetic image and linked it to rhetorical colors.

Our research, titled (The aesthetics of the metaphorical image of Imam Hussein, peace be upon him, in Andalusian literature - the Almohad era as a model), attempts, based on the descriptive-analytical approach, to clarify the features of the metaphorical image embodied by the poets of the Almohad era of Imam Hussein (peace be upon him) in their poetry, such as Ibn al-Abar al-Qadha’i. And Abu Al-Bahr Safwan Al-Mursi Al-Tajibi, Hazem Al-Qartajani, Ahmad bin Shakil Al-Andalusi, Nahed bin Muhammad Al-Andalusi, Abu Al-Abbas Al-Jarawi, and Abu Al-Baqa Al-Randi, and the places where we see the poets of the Almohad era relying on metaphor in embodying the image of Imam Hussein (peace be upon him), as a literary artefact that represents The image plays its role. The results indicated that Andalusian literature was not purely Umayyad, but rather a part of it was committed Shiite literature, and the throats of the poets of the Almohad era began to chant with praise and lamentation for the family of the Prophet and Imam Hussein, and the Husseini issue became one of the most powerful and present phenomena of Shiism in Andalusia, and it was noted that most poets relied on images. The metaphors in their poems, and most of the images were similar in terms of meaning and concept, aimed at crying, drawing tears, and commemorating Ashura.
The Directive Strategy in the Dialogues of Murthad Al-Khair, Subay' bin Al-Harith, and Maytham bin Muthoub (A Pragmatic Approach)
Authors: Atshan Dr. Mutlaq Rizej
Published: April 2024

The directive strategy is considered one of the most important types of strategies that a text producer adopts in order to achieve their communicative, influential, and utilitarian objectives. This research attempts to reveal the linguistic means in the directive strategy in one of the pre-Islamic era’s anthologies in a dialogical form composed of a series of speeches, with the main focus being the discourse of Murthad Al-Khair. This dialogical form belongs to the most eloquent eras of the Arabic language, prompting the researcher to use it as a practical field for study. The study is organized into two sections: the first includes the concept of pragmatics and the importance of the pragmatic approach in studying texts, then defining the limit of strategy, and the directive strategy, followed by explaining the justifications for the directive strategy. The second section is dedicated to the applied study.
Electrical energy generation from nanowire structures
Authors: Attab Rasol  R.
Published: April 2024

This work numerically estimate the amount of electric voltage generation from Zing oxide, Barium titanium, Gallium nitride, Lead zirconate titanate (ZnO, BaTiO3, GaN and PZT) nanowire structure respectively and other hetro-structure or doped structure like (ZnMgO, GaAlN) having rectangular and circular cross sections with dimension of length and width (l , b) 600,50 nanometers. The amount of the generated voltage seem enough to power biosensor, nanosensor, or even biomedical device. The effect of nanowire length, width and temperature and the effect of applied force are studied, All theses parameters having profound effect on the amount of the maximum generated voltage
Dynamical behavior of quantum-dot laser
Authors: Oleiwi M.O.
Published: April 2024

In this work we have investigated the dynamical properties of InAs/InGaAs laser emitting 1.3 m pumped by injection current density of fast rise and falling times with a duration of 5ns . In (capture) and out (escape) scattering rates of electrons and holes are studied against temperature, injection current density, Auger coefficient .Scattering times are studied against carrier reservoir loss coefficient , injection current density and temperature. Temporal behaviorof photons density against injection current density is given too.
Efficient High GainYtterbium Doped Lead Fluoroborate Glasses Fiber Amplifiers
Authors: Dagher AbdulKareem H.
Published: April 2024

This paper is based on the numerical solution of the rate equations model and their gain dependences are discussed. Simulation of the amplifier gain versus the pump power, amplifier length, ion concentration and core radius has been done. In order to keep the fiber amplifiers doped with ytterbium as short as possible with high gain, it is best to increase the doped concentration. For 10m amplifier length, pump power of 25mW, core radius of 2.5mm and 3 ion/m 25 3.5´10 doping concentration, the gain is 60dB. Increasing of the core radius would increase the threshold pump power and at the above same conditions, the optimum gain is at 5mm core radius.
Study of Structural, Optical and Electrical Properties of Cadmium Telluride Thin Films
Authors: Ajeel Hayder Mohammad
Published: April 2024

Prepared of the CdTe thin films by thermal evaporation technique in the vacuum of about 3 × 10−3 torr. in two concentrations(x= 0.2 and x= 0.3) on glass and silicon substrates. In this study we present the effect of increased concentrations of 0.2 and 0.3 on the structural, optical and electrical properties of The CdTe thin films. The structural properties were study by X-ray diffraction (XRD) and XRF results showed that the films were polycrystalline, optical microscope examination and Atomic Force microscopy (AFM) average grain size (24.66 – 12.11 ) nm for (x= 0.2 and x= 0.3) respectively . The optical properties were characterized by UV–VIS spectroscopy and the electrical properties was study.
Influence of Absorption cross section of saturable absorber on Passive Q-switching laser pulse characteristics
Authors: Salih Abdul-Kareem M.
Published: April 2024

The absorption cross section of saturable absorber influence on passive Q-switching laser pulse behavior has been studied by numerical solution of rate equations mathematical model. We report the passive Q-switching of the 2 4 4 Cr : BeAl O + (alexandrite) laser with the yttrium silicate 2 5 4 Cr :Y SiO + (Cr :YSO) solid state saturable absorber. The study shows that the behavior pulse energy, initial value of population inversion, and the laser photon number is scaling up when the ground state absorption cross section of saturable absorber increasing, while the behavior of pulse duration is scaling down.
Studying Effect of Solar Concentrator Type on Small Signal Gain for Pumping Nd: YAG Crystal
Authors: Azzawi Mohanad M.
Published: April 2024

In this research, solar flux is applied as a source for pumping Nd:YAG crystal. Lasing action could be gained when there is enough pumped solar flux expressed in term of small signal gain, SSG. Concentration ratio is the term of determining how the solar flux is close to produce SSG for lasing action. Concentration is achieved by applying a concentrator. Two types of concentrators are applied for comparison: Frensel lens and parabolic reflecting dish. It is found that, a solar intensity of 800 W/ m2 incident on Frensel lens of aperture area (729) Cm2 has a concentration ratio of (18000) compared with a parabolic reflecting dish of aperture area (7065) Cm2 has a concentration ratio of (1000). It is clear that Frensel lens is preferred over parabolic reflecting dish because it meets the required value of SSG for lasing Nd:YAG crystal.
Characterization of silences acid dosimeter for gamma-radiation dosimetry
Authors: Abul –Hail Riyadh. CH.
Published: April 2024

Silences acid has been investigated as a dosimeter for high doses of Gamma radiation through measuring the induced changes in optical absorbance from (315-900) nm at room temperature. It was found that the absorbance increased with increasing absorbed Gamma-dose. Also, the dose rate and post irradiation fading of optical absorption spectra has been studied. The results of this preliminary study show that Silences acid may be applied as a simple optical absorbance detector for dose measurement in the dose range (5 - 28 ) kGy.
Optical Properties of Te Thin Films Prepared by Thermal Evaporation Technique
Authors: Hachim Fatin G.
Published: April 2024

This work describes, Tellurium (Te) films were deposited on glass substrates at room temperature by the method of vacuum evaporation with thickness (0.4μm), with rate of deposition equal to (5.5Å/sec), the samples are annealed in a vacuum for one hour at (373 and 433) K. The optical properties such as absorption coefficient (k) was determined using the absorbance and transmittance measurement from FTIR Shimadzu spectrophotometer, with range of wave length (2800-3900) nm. And also calculated optical constants (refractive index (n), extinction coefficient (k)) for Tellurium films. The tests have been shown that the optical energy gap increases with increasing of annealing temperature for the samples.
Determination of Indoor Radon Concentration in Thi Qar Province Houses by using CR-39 SSNTD
Authors: Rashid Jabbar M.
Published: April 2024

The possible detrimental health effects of the inhaled radon and its decay products are in the limelight of interest of professionals as well as of the public. In the present work the passive integrated dosimeter technique with solid state nuclear track detectors (SSNTDs) super grade CR-39, was used to measure the concentration of the radioactive radon gas (Rn-222) indoor for 12 different locations in Thi Qar province. 176 detectors ( 1.0 cm x 1.0 cm x 0.5 cm) were prepared and were distributed in the chosen locations , after 90 days ( November, December 2012 and January 2013) the detectors were collected and treated chemically using etching conditions which controlled by four principals variables ( etching solutions ,temperature , morality and etching time). The tracks per unit area in each detector were determined by using MICROS Crocus II MCX100LCD optical microscope. Results obtained showed that radon average concentration indoors was varies from 25.66 Bq/m3 in Bateha to 113.63 Bq/m3 in Fuhood, and the annual effective dose according to these concentrations are 0.890 mSv/y and 3.941mSv/y respectively. Results indicate that the houses surveyed had indoor radon levels within permissible level when ICRP1993 recommended limit of 600 Bqm-3 was used. Few houses had higher radon levels if NRPB (Health Protection agency) UK and US (environmental protection agency) EPA limits of 200 and 148 Bq m-3 were used. The overall average for the concentrations of radon in indoor air in the province of Thi Qar in this study is 66.989 Bq/m3 .
Dielectrical and Electrical Properties of Polystyrene films Doped with Copper Sulfate
Authors: Najeeb Hussein Neama
Published: April 2024

The electrical characteristics of polystyrene doped with different concentrations (0,1,2,3,and 4wt%) of Copper Sulfate CuSO4.5H2O powder were studied . The films are prepared using solution casting technique, in order to investigate the effect of Copper Sulfate CuSO4.5H2O additions on the electrical properties of PS host. The D.C conductivity measured by measuring the D.C electrical resistance using the( Keithly Electrometer type 616C), and for different temperatures ranging from (30 – 80)oC . The dielectric properties measured by measuring the capacitor and the loss angle tangent as a function to the alternating electric field frequency using the (Agilent impedance analyzer 4294A), within the frequency range (50 – 6 ×106) Hz at room temperature. The experimental results showed that the dielectric constant is decrease with increase frequency of applied electrical field and increase with increasing concentrations, dielectric loss is decrease with increasing frequency of applied electrical field to be 0.5 MHz after this it was increasing , A.C electrical conductivity are increasing with increasing frequency of applied electrical field ,also, the results showed that the D.C electrical conductivity are increasing with increase concentration of PS and temperature, activation energy are decreasing with increase concentration of additive salt
Calculation of the Tunneling Current for Atom-sized Quantum Dot with Scanning Tunneling Microscope
Authors: Ajeel Fouad Nimr
Published: April 2024

In this work, the tunneling current of adsorbed atom-sized quantum dot on metal surface with scanning tunneling microscope (STM) is calculated using nonequilibrium Green’s function method of Keldysh. It is found that the correction to the tunneling current is expressed in terms of the transmission probability, where the correction is negative for the elastic part of the current and positive for the inelastic one. Depending on our calculations, we conclude that the position of electronic state of quantum dot, the vibrational mode energy, the strength of electron-vibration coupling and temperature, which important parameters to determine the physical features responsible for the processes concerned the nanostructure that are performed on the solid surface
Academic Performance and Attitudes toward Mathematics Challenge of Junior High School Students
Authors: Etcuban Jonathan , Mendoza Marqueen , Catalan Jusan , Ruiz Kenneth
Published: April 2024

The Mathematics Teachers Association of the Philippines, Inc. (MTAP) was organized to serve as an appropriate venue where mathematics teachers can come together, interact with one another, and share each other's expertise in pursuing excellence in mathematics education. This research aimed to determine the mathematics performance of the MTAP attendee and non-MTAP attendee and their attitude towards mathematics as to anxiety, confidence, enjoyment, benefits, and value of Grade 7 in the three identified high schools in Mandaue City, Philippines, as a basis for an action plan. This study used 267 randomly selected Grade 7 students from the selected high schools. A survey questionnaire was used to get the data of the respondents as to their attitude towards mathematics as to anxiety, confidence, enjoyment, benefits, and value, and an MTAP-DepEd Math Challenge and Algebra Test Questionnaire was used to assess their mathematics academic performance. The gathered data were statistically treated using frequency, percentage, weighted mean, standard deviation, and Chi-square test of independence. The results revealed that MTAP participants performed well in terms of their attitudes toward mathematics and written questions. Thus, the MTAP program improves students' academic performance in mathematics. As a result, this study recommends the implementation of the action plan.
Integrating STEM in Early Childhood Education: A Cutting-Edge Study on PAUD Development in Indonesia
Authors: Intisari  , Mutmainnah  , Andi Asrifan
Published: April 2024

This article examines Indonesian early childhood education (ECE) and STEM integration, focusing on Pendidikan Anak Usia Dini. The study examines the effects, obstacles, and benefits of STEM education in Indonesian preschools using a literature analysis and empirical research. The research uses quantitative analysis and case study design to analyze teacher-student relationships, STEM instruction, and STEM's impact on ECE quality. STEM integration improves children's learning experiences, demonstrating that STEM education might help young children develop critical thinking, creativity, and problem-solving skills. Despite the potential benefits, the report notes that STEM education requires teacher training, professional development, and curriculum adaptation to incorporate STEM principles. This research emphasizes play-based learning in the Indonesian ECE system and the role of stakeholders, including educators and the government, in STEM education integration. The research provides useful insights into early childhood education and suggests STEM-based school reforms to improve quality. This work contributes to STEM education research in Indonesia and has practical implications for Southeast Asian and Pacific educators and policymakers.
Algorithmic Trading Strategies: Leveraging Machine Learning Models for Enhanced Performance in the US Stock Market
Authors: Nisha Gurung  , MD Rokibul Hasan  , Md Sumon Gazi  , Md Zahidul Islam
Published: April 2024

In the recent past, algorithmic trading has become exponentially predominant in the American stock market. The principal objective of this research was to explore the employment of machine learning frameworks in formulating algorithmic trading strategies tailored for the US stock market. For this investigation, an array of software tools was employed, comprising the Pandas library for data manipulation and analysis, the Python programming language, the Scikit-learn library for machine learning algorithms and analysis metrics, and the LIME library for explainable AI. In this study, the researcher gathered an extensive dataset from the Amazon Stock Exchange, spanning from October 19, 2018, to October 16, 2022. The dataset comprised a wide range of parameters related to Amazon's stock data, facilitating a rigorous analysis of its market performance. Five models were subjected to the experiment, notably Ridge Regression, Ada-Boost, Light-GBM, XG-Boost, Linear Regression, and Cat-Boost. From the experiment result, it was evident that the XG-Boost attained the highest R-squared (99.24%) and accuracy (99.23%) among all the algorithms. From the above results, the analyst inferred that the XG-Boost was able to learn a more complex and accurate model of the stock exchange data compared to the other algorithms. XG-Boost algorithm can be utilized to back-test distinct trading strategies on historical data, enabling investors to evaluate their efficiency before risking real capital. By assessing a wide array of factors, the XG-Boost algorithm can assist investors in selecting stocks with a higher probability of outperforming the market.
Deep Learning for Enterprise Decision-Making: A Comprehensive Study in Stock Market Analytics
Authors: Sarder Abdulla Al Shiam  , Md Mahdi Hasan  , Md Boktiar Nayeem  , M. Tazwar Hossian Choudhury  , Proshanta Kumar Bhowmik  , Sarmin Akter Shochona  , Ahmed Ali Linkon  , Md Murshid Reja Sweet  , Md Rasibul Islam
Published: April 2024

This study explores the transformative impact of deep learning, specifically Convolutional Neural Networks (CNNs), on organizational decision-making in the stock market. Utilizing CNN architectures like VGG16, ResNet50, and InceptionV3, the research emphasizes the significance of leveraging deep learning for improved business intelligence and management. It highlights the superiority of CNN models over traditional algorithms, with VGG16 achieving an accuracy rate of 90.45%. The study underscores the potential of deep learning in extracting valuable insights from complex data, leading to a shift in optimizing organizational processes. Additionally, it stresses the importance of investing in infrastructure and expertise for successful CNN integration, alongside addressing ethical and privacy concerns. Through a dive into real-time mathematical concepts, the study provides insights into CNN functionality and offers comparisons between different architectures, aiding in specialized applications such as stock market trends.