bluuebunny/crossref_metadata_2025 huggingface dataset:
Pengaruh Efikasi Diri dan Pendidikan Kewirausahaan Terhadap Minat Berwirausaha Yang Dimediasi oleh Motivasi Berwirausaha pada Mahasiswa Universitas Jambi (Studi Kasus Mahasiswa Pendidikan Ekonomi)
Authors: Eka Tiondang Sauna , Khairinal Khairinal , Syuhada Siti
Published: May 2023

Abstract: From the observations made, it shows that most students have an interest in entrepreneurship, but students are still not consistent in determining their interests and decisions for entrepreneurship. This research is quantitative research using path analysis (path analysis). The results of the analysis of the data obtained explain that: (1) There is a direct effect of self-efficacy on entrepreneurship motivation of 0.514, (2) There is a direct effect of entrepreneurship education on entrepreneurship motivation of 0.442, (3) There is a direct effect of self-efficacy on interest in entrepreneurship of 0.583, (4) There is a direct effect of entrepreneurship education on interest in entrepreneurship of 0.539, (5) There is a direct effect of entrepreneurship motivation on interest in entrepreneurship of 0.569 (6) The effect of self-efficacy on interest in entrepreneurship through entrepreneurship motivation of 0.292, (7) The effect of entrepreneurship education on interest entrepreneurship through entrepreneurship motivation of 0.251.

Abstrak: Dari observasi yang dilakukan menunjukkan bahwa sebagian besar mahasiswa memiliki ketertarikan untuk berwirausaha namun mahasiswa masih kurang konsisten dalam menentukan minat dan keputusan untuk berwirausaha.  Penelitian ini merupakan penelitian kuantitatif dengan menggunakan analisis jalur (path anlisys). Hasil analisis data yang diperoleh menjelaskan bahwa: (1) Terdapat pengaruh langsung efikasi diri terhadap motivasi berwirausaha sebesar 0,514, (2) Tedapat Pengaruh langsung pendidikan kewirausahaan terhadap motivasi berwirausaha sebesar 0,442, (3) Terdapat pengaruh langsung efikasi diri terhadap minat berwirausaha sebesar 0,583, (4) Terdapat pengaruh langsung pendidikan kewirausahaan terhadap minat berwirausaha sebesar 0,539, (5) Terdapat pengaruh langsung motivasi berwirausaha terhadap minat berwirausaha sebesar 0,569 (6) Pengaruh efikasi diri terhadap minat berwirausaha melalui motivasi berwirausaha sebesar 0,292, (7) Pengaruh pendidikan kewirausahaan terhadap minat berwirausaha melalui motivasi berwirausaha sebesar 0,251.
Survey on Mortgage-Backed Securities Prepayment Risk Using Machine Learning Models
Authors: Parkavi S.
Published: May 2023

Mortgages allow for partial or complete prepayment at any time prior to the loan's maturity date. A mortgage prepayment is risky for the lending institution because it eliminates the borrower's obligation to pay future interest and complicates the steps required for refinancing the mortgage loan. Prepayment risk is a threat to mortgage-backed securities (MBS) that arises when borrowers pay down their mortgage principal more quickly than expected. For MBS investors, this means lower cash flows. A negative impact on cash flows and exposure to extension risk could result from actual prepayment rates being higher or lower than expected.
Analysis of Different Types of Antenna for Television Network and Extracting C Band Channels
Authors: Daniel R  , R.L Aswin , Sujith R  , Ram K.Gopal
Published: May 2023

Television network is a system of transmitting and receiving television signals over a large area. Antenna is a device that converts electromagnetic waves into electric currents or vice versa. Antenna plays a crucial role in the performance and quality of television network. In this paper, we will analyze different types of antenna for television network, such as dipole antenna, yagi antenna, parabolic antenna and fractal antenna. We will compare their advantages and disadvantages, and suggest some criteria for choosing the best antenna for different scenarios. Dipole antenna is the simplest and most common type of antenna for television network. It consists of two metal rods or wires of equal length that are connected to a transmitter or receiver. Dipole antenna can receive signals from any direction in a horizontal plane, but has a low gain and a narrow bandwidth. Dipole antenna is suitable for local television stations or indoor applications. Yagi antenna is a directional antenna that consists of a dipole antenna and several parasitic elements, such as reflectors and directors. Yagi antenna can focus the signals in one direction and reject the signals from other directions, thus increasing the gain and reducing the interference. Yagi antenna has a moderate bandwidth and can be easily adjusted to different frequencies. Yagi antenna is suitable for long-distance television network or outdoor applications. Parabolic antenna is another directional antenna that consists of a parabolic reflector and a feed horn. Parabolic antenna can concentrate the signals into a narrow beam and achieve a high gain and a wide bandwidth. Parabolic antenna can also receive signals from satellites or other high-altitude sources. Parabolic antenna is suitable for satellite television network or high-definition television network. Fractal antenna is a novel type of antenna that uses fractal geometry to design its shape and structure. Fractal antenna can have multiple resonant frequencies and a large effective area, thus increasing the bandwidth and the efficiency. Fractal antenna can also have self-similarity and scalability, which means it can be miniaturized or enlarged without affecting its performance. Fractal antenna is suitable for digital television network or wireless communication network. In conclusion, different types of antenna have different characteristics and applications for television network. Depending on the factors such as distance, frequency, direction, interference, quality and cost, one can choose the best antenna for their specific needs
Leadership Strategies of Successful Women-Owned Businesses in Cameroon
Authors: Ajieh Ntoko Henry
Published: May 2023

Lack of leadership skills in women led businesses can result in high business failure rates. Women business owners who do not know how to improve their leadership skills could face difficulties in succeeding in business. Grounded in the transformational leadership theory, the purpose of this multiple case study was to explore strategies that women business owners in the events planning business use to improve leadership skills to succeed in business beyond 5 years. The study participants included 5 women in the events planning business in Cameroon, Central Africa who have successfully developed the strategies needed to improve leadership skills to succeed in business beyond 5 years. Data were collected from semistructured interviews, publicly available documents, and observations of participants’ business facilities. Yin’s 5-step data analysis process was used to analyze the data. Three themes emerged: embracing leadership attributes, acquiring leadership capabilities, and conceptualizing the playing field.
Contents, Actions and Efficacy of Weight Reduction Medications Available in the Drugs Markets, Benghazi, Libya
Authors: Abdella Hanan Mohammed , Elmabsout Ali Ateia , Idris Al-Khafifi Fatima , Abdul Hafeez Fatima , ThaniAl-Haddad  , Al-Werfalli Halima , Ishtiwi Hala
Published: May 2023

Background: Obesity pharmacotherapy has evolved significantly over the past 60 years. Today, six anti-obesity medications (AOMs) are approved by the Federal Drug Administration (FDA) for the long-term treatment of obesity. The aim of the present work was to investigate the types of weight management medication dispensed to patients seeking of weight reduction products in the drug markets, also know their contents, purpose and action. Methods: This cross sectional study conducted in pharmacies and OPD patients with overweight and obesity. Predesigned questionnaire was validity for patients and pharmacies. The total samples collected 150 (53 males and 97 female). The data was analysis by Chi-square test and T test at α< 0.05. Result: The result of this study revealed that, weight managements medication used by the patients most of them not approved by FDA and contain different ingredients such as antioxidants, antidepressant, dietary fibre, anti-aging, laxative and some of the ingredient have unknown function. While other regulate blood pressure, heart function, sleeping and glucose metabolism. On the other hands the other ingredients have been found associated with appetite suppression or weight loss. The most common weight management product available in the drug markets for weight reduction were found fit slim, green tea, green coffee and orlistat, 20%, 18%, 14.7% and 8% respectively. There were some improved in health status after using the weight management products include anaemia, depression. However, there was evidence for developing of ulcer and GIT disorder after using some of weight management products. The common effect of weight management products for body weight, BMI and waist size reduction was green coffee (P< 0.05), while the other products mostly significant effect on reduction of weight and/ or BMI or waist (P< 0.05). Conclusion: The present study revealed that, different number of products were dispensing which were not approved by FDA which contain ingredient may increasing GIT disturbance. The most weight management medication has approved it efficacy in weight reduction was green coffee. Even though, achievement of body weight reduction with some products but these still needed to be supervised and further investigation.
D3.4 Cost-effectiveness analysis of monitoring schemes
Authors: Breeze Tom , Fernandez Miguel , McCallum Ian , Morán-Ordóñez Alejandra , Pereira Henrique , Junker Jessi
Published: May 2023

Financial factors are among the most widely cited bottlenecks around biodiversity monitoring but are relatively poorly studied, compared to monitoring methodologies. The existing body of literature on the cost-effectiveness of monitoring focuses heavily on the hypothetical costs of generating data rather than the practical realities of undertaking and managing monitoring. To address this we used a combination of surveys and semi-structured interviews with 67 biodiversity monitoring managers to provide an in-depth exploration of 1) what are the main rivers of their costs, 2) how different factors affect their cost-effectiveness in generating biodiversity monitoring data, 3) What is the scale and economic value of volunteer labor and 4) what are the main cost bottlenecks and spending priorities. Analysis of these responses demonstrates that monitoring efforts are able to generate more data at a lower cost when they have a) higher numbers of volunteers, b) greater densities of sites and c) monitor a wider range of taxa and habitats. Volunteer labour was worth millions of Euros to these organizations, sometimes more than their total costs. Total budgets and volunteer recruitment and retention were the main cost related bottlenecks among respondents, while staff recruitment was the highest priority for new spending.  The results and discussion around them highlight the challenges faced by biodiversity monitoring organizations, particularly in recruiting and retaining qualified staff for the long-term. We produce a series of nine key messages and six recommendations for policy-markers and funders going forward.
Deliverable 4.2 Novel technologies for biodiversity monitoring - Final Report
Authors: Dornelas Maria , Chow Cher , Patchett Robert , Breeze Tom , Brotons Lluís , Beja Pedro , Carvalho Laurence , Jandt Ute , Junker Jessi , Kissling W. Daniel , Kühn Ingolf , Lumbierres Maria , Lyche Solheim Anne , Mjelde Marit , Moreira Francisco , Musche Martin , Pereira Henrique , Sandin Leonard , Van Grunsven Roy
Published: May 2023

The goal of this task was to identify and characterise novel methods for biodiversity monitoring, and to assess their suitability for large scale deployment across Europe. To address this goal we combined extensive literature searches with expert consultation, namely using a survey and through an online workshop. The outcome of our searches is summarised in a metadatabase, which includes 282 methods or method components, which have been classified according to EBV classes addressed, target taxa, and broad method type the method relates to. We then consulted experts within the EuropaBON network and beyond, on the advantages and challenges associated with each of these novel methods, as well as their technology readiness level. In combination, our approaches revealed a wealth of novel methods and a highly active research field, with extensive emerging innovation on several fronts. However, it also revealed high variability in technology readiness, with lack of validation being a prevalent hurdle yet to be overcome for many applications of these methods (i.e. for some taxa and in some environments). Moreover, the opportunities for expansion in observations created by these novel approaches open new challenges associated to the standardisation, integration and storage of biodiversity monitoring data. Finally, the expansion of observations should take a designed approach, in order to deliver on its potential to improve representation and resolution of biodiversity monitoring, and should aim to complement rather than replace human observations.
The record of Ametropus fragilis Albarda, 1878 (Ephemeroptera, Ametropodidae) from Georgia
Authors: Memishishi Aleksi , Bikashvili Ani , Japoshvili Bella , Mumladze Levan
Published: May 2023

The representatives of the genus Ametropus (Insecta, Ephemeroptera) were recorded 80 years ago in Georgia. Due to the taxonomic uncertainty, the recorded specimens were considered potentially new taxa. Since then, no other record of Ametropus has been documented from the whole South Caucasus and its nearby regions further south. In the present contribution, we provide a new record of Ametropus from the Alazani River (Kura River Basin, Georgia). Morphological and DNA barcoding of the COI gene fragment showed that the species belongs to the widespread Holarctic species A. fragilis. Morpho-anatomical characteristics also confirmed the high degree of similarity between the newly recorded specimens and those once recorded 80 years ago. In addition, the COI barcode showed a strikingly closer relationship between Caucasian A. fragilis and North American A. neavei (3.54% divergence) compared to Caucasian and European A. fragilis populations (4.3% divergence). The observed pattern clearly indicates the need for further and more thorough revision of the Ametropus species complex in the Holarctic region.
New survey data on abundance and movements for two poorly known Asian Spiny Frogs
Authors: Batool Arooj , Rais Muhammad , Saeed Muhammad , Akram Ayesha , Ahmed Jamal , Ahmed Waseem , Batool Arfaa , Kyle Kirsty Jane
Published: May 2023

We present new natural history data on abundance and movements (daily and seasonal) during the pre-breeding (March-June) and breeding-post-breeding season (July-September) of two poorly studied frog species of the Himalayas, Nanorana vicina and Allopaa hazarensis. We estimated 185 Murree Hills Frogs and 90 Hazara Frogs within the study area (0.79 ha). The daily and seasonal movement data showed that the two species moved either between neighboring ponds or remained in an array of smaller ponds (within an area of 120 m2) along the stream bank. About 75% of movements were < 29.5 m in N. vicina and < 50.87 m in A. hazarensis during pre-breeding season while < 41.5 m in N. vicina and < 81 m in A. hazarensis during breeding-post-breeding season. We suggest inclusion of amphibian habitat requirements and ensuring stream connectivity in urban planning and development projects in the area to prevent the local extinction of the endemic species. In the future, more robust and long-term studies, encompassing more streams situated within a wider area, would help clarify dispersal, colonization, metapopulation structure, and dynamics of these endemic frogs of the forested montane streams in the Himalayan Foothills.
Synopeas maximum Awad & Talamas (Hymenoptera, Platygastridae): a new species of parasitoid associated with soybean gall midge, Resseliella maxima Gagné (Diptera, Cecidomyiidae)
Authors: Melotto Gloria , Awad Jessica , Talamas Elijah J. , Koch Robert L. , Lindsey Amelia R. I.
Published: May 2023

Synopeas maximum Awad & Talamas, sp. nov., the first reported parasitoid associated with the soybean gall midge, Resseliella maxima Gagné, is described based on morphological and molecular data. Parasitoids were reared from soybean stems infested by R. maxima in Minnesota. A phylogenetic reconstruction of the genus Synopeas Förster was performed with COI sequences (n=2412) available on the Barcode of Life Data System (BOLD). Phylogenetic and barcode gap analyses suggest 279 Synopeas species in this dataset, with S. maximum sequences forming a monophyletic clade that is distinct from relatives. The Synopeas maximum clade was close to specimens from Canada and the United States, suggesting it is native to North America. We present a taxonomic treatment of S. maximum to facilitate its identification, including comparison to morphologically similar species. This project provides baseline data for further ecological study of R. maxima parasitism, and its management in soybean.
A new species of Argyreia (Convolvulaceae) from Yunnan, China
Authors: Zhang Mao-Lin , He Yi , Liu Quan-Ru
Published: May 2023

Argyreia subrotunda, a new species from Yunnan Province, China, is described and illustrated. The new species resembles A. fulvocymosa and A. wallichii, but differs from these in the flowers with an entire or shallowly lobed corolla, as well as smaller elliptic bracts, lax flat-topped cymes and shorter corolla tubes. An updated key to the species of Argyreia from Yunnan province is also provided.
The impact of transition to a remote work format on the mental health of employees
Authors: Gorshkova Marina O. , Lebedeva Polina S.
Published: May 2023

The subject of employee mental well-being has recently been discussed in the Russian corporate world and now it is a hot topic. According to the survey results, most domestic companies consider the problem of employee burnout to be important and recognize its negative impact on the staff, while over half are reluctant to do anything about it. However, for those companies that started thinking about implementing employee psychological wellness programs before 2019, the pandemic accelerated the process. The purpose of our study is to identify the causal relationship between the shift to remote working in connection with the COVID-19 pandemic and the mental state of workers. In-depth interviews with HR managers of the Russian branches of six large international companies and econometric analysis were used in this work. The research reveals that the abrupt shift to work from home (WFH) had a negative impact on employee mental state, which forced the companies to promptly implement new measures to support their workers. Over time, the staff was able to adapt to the new environment, and the opposite effect was observed: during the subsequent waves, those who were at WFH felt more psychologically stable compared to those transferred to a remote format later.
A new species of Pseudopoda (Araneae, Sparassidae) from China, with the description of different and distinctive internal ducts of the female vulva
Authors: Gong Li-jun , Zeng Meng-yun , Zhong Yang , Yu Hui-liang
Published: May 2023

One new species of the genus Pseudopoda Jäger, 2000, Pseudopoda deformis Gong & Zhong, sp. nov. (♂, ♀), is described and documented with digital images from Shennongjia Forestry District, Hubei Province, China, based on morphology and DNA barcodes. This new species is separated from other Pseudopoda species by the unique type of internal ducts of the female vulva that are curved longitudinally, forming a narrow triangle or trapezoidal shape. In addition, DNA barcodes for this species are provided.
Logistique inverse et RSE : l’impact des choix stratégiques sur la performance des entreprises
Authors: Ben Arfi Wissal , Sahut Jean-Michel , Hikkerova Lubica
Published: May 2023

Les responsabilités de l’entreprise sont complexes et multidimensionnelles, couvrant divers domaines de l’environnement interne et externe. Dans cet article, l’attention est focalisée sur l’un des thèmes clés, relevant des questions de responsabilité sociale des entreprises : le management de la chaîne logistique. En particulier, nous étudions au travers d’une étude qualitative basée sur des cas multiples, comment les entreprises combinent leurs pratiques de logistique inverse avec la RSE et nous analysons les impacts de ces choix stratégiques sur leur performance. Les résultats révèlent les nombreuses difficultés et barrières rencontrées par les entreprises pour trouver un équilibre entre les ambitions et les retombées économiques d’une logistique inverse soucieuse d’une réelle démarche RSE. Ce constat a été confirmé avec la quasi-absence d’une performance financière et un objectif économique limité à réduire les risques, en particulier ceux environnementaux.
Le silence dans la conversation
Authors: Le Breton David
Published: May 2023

La qualité d’un échange, tel qu’il est ressenti par les acteurs, dépend étroitement du rythme, de l’alternance entre temps de parole et temps de pause dont chacun éprouve la nécessité au regard d’un régime social de la parole. Le bon usage de la conversation est conditionné par une alchimie silencieuse relevant de la compétence de communication de l’individu. Pour apprendre à parler il faut apprendre à se taire selon les attentes implicites des interlocuteurs en présence.
Des mères de famille au chevet des avortantes : une stigmatisation renouvelée dans les centres d’interruption volontaire de grossesse
Authors: Thizy Laurine
Published: May 2023

Cet article s’intéresse à la prise en charge des interruptions volontaires de grossesses telle qu’elle s’effectue dans des centres d’orthogénie de l’hôpital public. L’objectif est de montrer que le contrôle social des avortantes est tributaire du recrutement genré des équipes médicales et soignantes. Les professionnelles de l’orthogénie, presque exclusivement des femmes déjà mères, choisissent cette spécialité délaissée moins par militantisme que pour se rendre davantage disponibles pour leur vie familiale, renonçant de fait à une activité professionnelle plus valorisée. Une telle organisation du travail amène ainsi auprès des avortantes des professionnelles ayant une conception plutôt essentialiste de la maternité et des rapports de genre. La prise en charge proposée se fonde sur un travail émotionnel de care , d’autant plus nécessaire qu’il constitue la principale source de reconnaissance au travail, en l’absence d’une importante technicité. Ce travail de care , faiblement politisé, performe cependant des attentes genrées envers les usagères et contribue paradoxalement à renouveler la stigmatisation de l’avortement.
Practically Engage Students in Research Appropriate to Their Level in Teaching Physics
Authors: KIM Jung Bog
Published: May 2023

We propose a plan to realize the process of a caterpillar student who has entered graduate school to become an expert like a flying butterfly in 2 or 3 years in undergraduate education. (1) Let them study while participating in practical research with research topics suitable for students’ level. (2) Let them learn from seniors and colleagues as if it were the seniors who gave the most practical lessons in the laboratory. (3) Give them time to find alternatives when they fail, and let the professor act as a coach. In at least one course, an opportunity should be provided to study empirical rather than superficial physics.
School Science Education and Quantum Physics
Authors: KANG Nam-Hwa , LEE Tae-Gyoung , WOITZIK Andreas
Published: May 2023

Interest in quantum physics among the general public has been increasing along with various practical applications such as quantum computing, quantum cryptography, and quantum sensing, as well as their economic expansion. This close relationship with everyday life highlights the necessity for non-specialists to understand basic concepts of quantum physics, not only for physicists and related fields. Since 2000, there has been a noticeable movement in international physics education journals to include quantum physics in high school curricula, and recent papers suggest some agreement on core concepts that can be covered at the high school level across various countries. In this article, the basic concepts of quantum physics covered in high school physics education in Korea and abroad are reviewed, and suggestions are made for future topics that should be addressed in physics education research.
Undefined Socio-Affective Scenarios in a Virtual Learning Environment
Authors: Akazaki Jacqueline Mayumi , Rocha Machado Leticia , Barvinski Carla Adriana , Alba Wildt Torrezzan Cristina , Alejandra Behar Patricia
Published: May 2023

There is a growing number of virtual courses being offered by Brazilian educational institutions, requiring the development of technological resources and research to assist in the teaching and learning processes in Distance Education (DE). The analysis of the students’ socio-affective profiles in Virtual Learning Environments (VLE) enables possibilities to develop methodologies and/or resources to better understand them. The Social Map (SM) and Affective Map (AM), both features of the Cooperative Learning Network (ROODA in Portuguese), provide inferences and graphic presentations of students' socio-affective profiles. Thus, this article aims to identify students with Undefined Socio-affective Scenarios in a VLE, based on Learning Analytics (LA). LA is defined as the measurement, collection, and analysis of data. This qualitative and quantitative research approach was carried out based on 10 case studies. The target audience was divided between 77 undergraduate students, 29 graduate students, 27 elderly people, and 86 professors who participated in teaching activities at a Brazilian public university. Data collected from the SM and AM were extracted in order to identify the relationship between these two aspects. The result was 18 Socio-affective Scenarios using LA and the identification of 108 Pedagogical Strategies to contribute to the analysis of students’ learning profiles.
The GW Mobile Learning Center: Mixed-Reality within an Immersive and Interactive Learning Setting
Authors: Salvetti Fernando , Capshaw Teri L. , Zanin Linda , O'Connor Kevin C. , Zeng Qing , Bertagni Barbara
Published: May 2023

The Community Medi-Corps Program - designed and implemented by the George Washington University (GW)  School of Medicine and Health Sciences (SMHS) faculty with Growth and Opportunity Virginia funding (GO Virginia) - is aimed at leveraging the power of community, educational institutions, mentors, industry, and business partners to close the opportunity gap, transform student learning, and enrich the regional workforce. This program transforms educational experience through innovative virtual reality, augmented reality, and a mix between the two that is the enhanced reality (e-REAL). Students will be better prepared in the pathways they choose for high demand health and life sciences industry jobs that will help grow the economy.
«Sobre ti paso extraña». María Zambrano, una poética de la catástrofe
Authors: Breysse-Chanet Laurence
Published: May 2023

Sur le lieu même de la catastrophe, a lieu une nouvelle naissance. De ce postulat, la vie et l’œuvre de la philosophe andalouse María Zambrano, exilée depuis la chute de Barcelone en janvier 1939 jusqu’en 1984, serait la démonstration, si tant est que la souffrance profonde puisse donner lieu à une certitude fondée. Pourtant, ses écrits ne cessent de donner chair à cette affirmation, comme le montrera l’étude d’un ensemble de textes écrits entre la fin 1938 et le début de 1939, rassemblés comme «Escritos autobiográficos. Delirios. Poemas». À partir de ces pages, l’on verra comment María a uni son destin à la poésie, par la voie de la «raison poétique», incarnée en particulier par la figure de son Antigone, corps de réconciliation depuis la mémoire et l’amour.
Exergaming to Increase Physical Activity, Improve Health, and Combat Health Issues Including Obesity
Authors: Ouanes Khaled
Published: May 2023

Implementing health behaviors changes is a must in order to combat the increase of the obesity epidemic. It is crucial in such a context to encourage higher levels of physical activities. There are many novel and innovative lifestyle intervention strategies that are currently being explored. Among the most promising of these able to be cited is Exergaming. Exergaming is a form of video gaming that requires players to move during gameplay. The game inherently interacts with the players based on their movements. Examining the existing body of literature, we can demonstrate the presence of an obvious strong correlation between exergaming and increased physical activity and energy expenditures. Most active videogames tested were found to achieve physical activity levels of moderate intensity. In addition to battling obesity, physical activity through exergaming (or other ways) is beneficial for a myriad of other health issues.
Examining Customer Behavior Towards the Use of Contextual Commerce Powered by Artificial Intelligence
Authors: Ho Ree Chan , Leow Nelvin XeChung
Published: May 2023

The integration of artificial intelligence into electronic commerce has revolutionized consumer behavior due to its capability in supporting cutting-edge features for conducting business online. It pertains to contextual commerce that facilitates customers to connect and buy goods wherever they are. This study aimed to examine the influence of artificial intelligence applications on the operations of contextual commerce. The conceptual framework was based on the UTAUT theory. The sample was the users of contextual commerce who were familiar with its usage. An online questionnaire was used to collect the data, and variance-based structured equation modeling was applied for data analysis. The four technological acceptance constructs derived from UTAUT were tested and confirmed as antecedents for contextual commerce. Furthermore, the inclusion of brand anthropomorphism as the antecedent was also supported. The empirical findings of the study explain the consumer attitude toward the significant use of artificial intelligence in contextual commerce.
Mall Customer Segmentation Engine Through Clustering Analysis
Authors: Vijarania Meenu , Kumar Nitin , Kumar Rohit , Gupta Swati
Published: May 2023

Finding related information within a cluster is done using a technique called clustering. The dataset cluster uses the data's maximum and minimum values to group together similar data. Clustering is a process in which matter has been split into groups and grouped based on a rule to maximize within-group similarity and minimize between-group difference likeness. In this chapter, the authors examine and contrast the various group analysis techniques and algorithms employed by Rapid Miner. Multiple clustering methods have been developed. In the chapter, two types of clustering for algorithms are analyzed. One area of mall patrons was evaluated. The data set is used with Rapid Miner tools to determine the proper cluster.
Application of Machine Learning for Optimization
Authors: Dey Paramita , Chatterjee Kingshuk
Published: May 2023

This chapter reviews the literature on machine learning and presents regularly used machine learning algorithms in an optimization framework. The interaction between learning algorithm and optimization shell are scrutinized. Methodologies that increase the scalability and efficiency are discussed. Optimizations strategies are predominant in customer support analytics. Optimization schedule basically endeavours to discover the greatest or least of a job, like the objective work, by creating a calculation that methodically chooses input values from a permitted set and computes the esteem of the work. Machine learning favours less-complex calculations that work in sensible computational time. Any side from data fitting, there are various optimization problems and optimization algorithms, and machine learning can ease the solution. In addition, many methods extensively used for the analytics of customer support have been proposed in optimization problems over the last few decades to obtain optimal resolution. Pros and cons of these models and future research directions have been shown.
Sequence Graph-Based Query Auto-Suggestion (SGQAS)
Authors: George Soumya
Published: May 2023

Query autosuggestion or auto-completion is a query prediction service that returns suggested queries for text-based queries when users type in the search box. It is a search-assistant feature of almost all search engines that helps users complete the queries without typing the entire search query. The process of query auto-suggestion typically involves analyzing the user's partial query and generating a list of suggestions based on factors such as popular search terms, the user's search history, and the search context. The suggestions are then displayed to the user in real-time, often in a drop-down menu or other interface types, allowing them to select and refine their search query easily. This chapter proposes a content-based query auto-suggestion using a graph-based word sequence representation of documents using a knowledge graph. It uses the whole sequence of all entered query terms to retrieve the names of all nodes connected to the end node of the entered path sequence of query terms to provide user suggestion queries.
Predictors of Usability of a Mobile Intelligent Agent Information Provider for College Students
Authors: Bringula Rex Perez , Jose Janszen Kiel L. , Lardizabal Arnelle T. , Lizaso John Raymon D.
Published: May 2023

This study determined the factors that influenced the usability of a mobile-based intelligent agent called “AskRed.” The design-related factors were evaluated in terms of performance, accuracy, responsiveness, aesthetics, and completeness. The usability of the software was determined in terms of satisfaction and intention to re-use the software. The software received favorable ratings from the students. Experts' software evaluation recommended strengthening the design of the intelligent agent in terms of security, performance, completeness, and ease-of-use. Multiple regression analyses showed that performance and completeness influenced satisfaction and intention to re-use. Aesthetics and responsiveness influenced satisfaction but not intention to re-use. Responsiveness had a negative impact on satisfaction. The predictive powers of the regression equations are 58% and 73%. This study provided empirical evidence on the predictors of usability of an intelligent agent used in a university setting.
Corporate Governance Practices and Financial Distress: Empirical Evidence from Listed Companies in Sri Lanka
Authors: Balagobei S. , Keerthana G.
Published: May 2023

The study aims to investigate the impact of corporate governance on financial distress of listed companies in Sri Lanka. Board size, board composition, CEO duality, board meeting, director ownership, and audit committee size are proxies for corporate governance while financial distress is measured by the Altman Z-score. Altman Z-score measures financial distress inversely and bigger the Z-score indicates the smaller the risk of financial distress. Using hundred and eight individual observations of firms listed in Sri Lanka for the period of 2019 to 2021 and employing fixed effects model, the effect of corporate governance practices on financial distress is evaluated. The results from panel data regression analysis reveal that firms having large number of directors on the board have a low likelihood of financial distress of listed companies in Sri Lanka. Furthermore, when a chief executive officer serves as the chairman of the board at a company, the more likely it is that the company will experience financial distress. But, board composition, audit committee size, board meeting and director ownership have not shown any significant impact on financial distress. The current study also provides evidence that firm-specific characteristics such as firm size, leverage and profitability, could be useful as to determining the likelihood of financial distress. The findings may be of prominence to the academic researchers, practitioners, and regulators who are interested in discovering the quality of corporate governance practices in a developing market and its impact on financial distress.
Plastic Use Among Sri Lanka's Metropolitan Population: A Study of Environmental Consciousness and Behaviour
Authors: Malkanthie M. A. A. , Herath H. M. C. J. , Galdolage B. S.
Published: May 2023

This study seeks to evaluate customers' purchase and disposal patterns for plastic and polythene and whether their environmental consciousness matches with actual behaviour. Data were collected from 117 households in metropolitan areas in Sri Lanka and analysed using descriptive statistics and paired sample t-test. Before data analysis, the scales' reliability and validity were evaluated. Findings showed a significant gap between actual behaviour concerning plastic consumption and environmental consciousness. Although most customers have positive opinions regarding environmental awareness, these beliefs have not necessarily converted into the corresponding behaviour to the same degree. As per results, 39% of the respondents burn their waste, including plastics, in open, while 4% have engaged in open dumping. The findings of this study can be taken into consideration to minimize the harmful effects of plastic and polythene disposal behaviour in Sri Lanka through an understanding of consumers’ actual behaviours. Especially relevant authorities shall initiate awareness campaigns and proper garbage disposal systems.
Anaphylactic Reaction to Cryoprecipitate in a Patient with Von Willebrand Disease During Factor Correction for Elective Cesarean Section
Authors: Bandara Samanka , Imali Maduka , Wanasinghe Madura , Ratnayake Chathura , Pinto Vasanthi , Desilva Padmalal
Published: May 2023

A 40-year-old patient with Type I Von Willebrand Disease presented for elective cesarean section. At the operating theater before delivery, while receiving cryoprecipitate, she developed an anaphylactic reaction requiring resuscitation. Once she was hemodynamically stable, factor VIII/VWF concentrates were administered and operative delivery performed, with a good maternal and fetal outcome.
Comparative Study of The Effects of Three Different Volumes and Concentrations of Levobupivacaine on The Block Characteristics in Upper Limb Surgeries Using Ultrasound-Guided Supraclavicular Block
Authors: Murugesan Aruna Manaswini , Subramaniam Anand
Published: May 2023

Backgrounds and objectives: This an attempt to compare the effects of 15ml of levobupivacaine 0.75%, 20 ml of levobupivacaine 0.375% and 30ml of levobupivacaine 0.25% with fixed dosage (75mg) on block characteristics in upper limb surgeries using ultrasound guided supraclavicular block.
Materials and methods: Titled “Comparative study of the effects of three different volumes and concentrations of Levobupivacaine on the block characteristics in upper limb surgeries using ultrasound guided supraclavicular block” performed in Department of Anaesthesiology, Chettinad Hospital and Research Institute from March 2020 to April 2021. Group A – 15mL of Levobupivacaine 0.5%, Group B – 20mL of Levobupivacaine 0.375% Group C – 30mL of Levobupivacaine 0.25%
Results: Onset of Sensory block: This study observed that mean onset of sensory block was earlier in 15mL was 22±5.25 minutes in comparison 20mL was 29±6.42 minutes and 30mL 37.5±6.17 minutes which is significant. Onset of Motor block: It was observed that mean onset of motor block was earlier in 15mL was 33±6.57 minutes when compared to 20mL was 36±6.87 minutes and 30mL 44±7.67 minutes which is significant. Duration of Analgesia: This study observed the mean Duration of analgesia was longer in 15mL 19.25±2.52 hours when compared to 20mL and 30mL Group having 15.5±1.88 hours and 12±1.94 hours respectively, which is significant.
Diaphragmatic involvement: This study observed that the mean diaphragmatic involvement was longer in 15mL 25.6±13.291% when compared to 20 mL and 30mL having 33.76±9.76% and 52.435±12.6% respectively, which is significant.
Conclusion:15mL Levobupivacaine of 75mg has an early onset of Sensory and Motor blockade and Prolonged Duration of Analgesia and lesser diaphragmatic involvement compared to 20mL and 30mL.
Comparison of Accuracy of Ultrasound Measurement of Subglottic Diameter Versus Conventional Age Based Formula for Estimating Endotracheal Tube Size for Pediatric Surgical Patients- A Prospective Randomized Controlled Study
Authors: Gooty Sunanda , Pula Ravikanth , Thakur Nagarjuna , Gazula Suhasini
Published: May 2023

Introduction: The main aim of this study is to determine if ultrasonography (USG) based measurement of subglottic diameter is the best size predictor for endotracheal tube (ETT) in pediatric surgical cases over age-based formula with micro cuff tube. Also, to test reintubation percentage and post-operative complications in children.
Methodology: This research is double-blind randomized control study with 68 children undergoing elective surgery requiring general anaesthesia with micro cuff tube. They were divided into 2 groups i.e. ETT size by USG (group U) and ETT size by age-based formula group A) (with 34 children in each. Both groups ETT measurement was calculated by independent Samples t-test, and correlation of both groups with actual ET Tube was measured by Pearson’s correlation coefficient. Reintubations or post-op complications was measured by Chi-squared test.
Results: Mean age of group A and U are 5.65 ± 2.77 and 5.97 ± 2.77 respectively. Mean weights were from 13.5±2.06 kgs to 27±4.63kgs. Statistical significance with a P-value (P=0.0460) is observed in group U whereas no significance was seen in group A. A strong positive correlation (R=0.960) between USG-estimated ETT size and actual ETT size is observed. The difference in reintubations and post-op complications in group U were statistically significant with P < 0.002.
Conclusion: The present study concludes that the sub glottis diameter measured by USG is a good predictor for correct size of micro cuff endo tracheal tube in children.
Intubation of Critically Ill COVID-19 Patients Using Conventional Laryngoscope in the ICU
Authors: Ratnayake Ashani , Rajapakse Ayeshani , Kumarihamy Prabhshini , Jayasinghe Amila , Dissanayake Gayan
Published: May 2023

Background: Video laryngoscopy is recommended for critically ill COVID-19 patients due to safety concerns and avoid complications. It is not available in some places and thereby forcing the operator to rely on conventional laryngoscope. Intubations in critically ill COVID-19 patients are challenging and may lead to adverse complications which may be affected by the laryngoscope used. The aim of the study was to analyse predictors of difficult intubation, complexity of intubation and complications of using conventional laryngoscopy in intubations of COVID-19 patients in ICU.
Methods: A prospective observational study was done in COVID Intensive Care Unit of the Base Hospital- Teldeniya, Sri Lanka from 1st of January 2021 to August 2021. The data was collected using a Performa filled by operator at the end of the intubation. Apart from demographic data and clinical parameters, data related to intubation including MACOCHA score which is a validated score predicting difficult intubation in ICU(3) and Intubation difficulty scale (IDS) which measures the actual complexity of intubation(4) were collected. The complications related to intubation were also analysed.
Results: Approximately 84 out of 91 emergency intubations were done using conventional laryngoscope. Out of them 50.72 % were male and 49.27% Were female. Mean age was 50.75 years. First pass success rate was 83.3%. 25% had MACOCHA score more than 3. Most patients scored on the desaturation component of the score. Despite this only 50% of the predicted difficult intubations actually had major difficulty in intubation. The commonest complication was hypotension. 12 had suffered cardiac arrest, and 4 of them were fatal.
Conclusions: Intubation of Critically ill COVID-19 patients are challenging but can be done successfully with conventional laryngoscope. However, one must prepare for complications including cardiac arrest.
Publishing as an Amateur Author, Probability of the ‘Improbable’
Authors: Munasinghe B. M.
Published: May 2023

No abstract available
Sitting Position in Neuro Anesthesia – Current Perspective and The Way Forward
Authors: Weerakoon Ravi
Published: May 2023

No abstract available
Evaluating the Effectiveness of Attention Distraction Method on Perception of Pain During the Use of Myofascial Trigger Point Release Technique
Authors: Nakandala Piumi , Nanayakkara Saman , Nanayakkara Indumathie
Published: May 2023

Background: Distraction techniques are identified as cognitive processes that interfere with pain perception by preventing transmission of pain signals to the brain. The focus of these techniques is to direct the attention of the patient to a different stimulus other than the pain sensation. Dry needling (DN) is a mildly invasive technique which is used to treat pain associated with Myofacial trigger points (MTrPs). Even though previous studies have evaluated the influence of distraction techniques on the pain perception during various interventions, the effects during DN are not available in literature.
Objectives: This study evaluated the influence of distraction technique on the perception of pain during MTrP-DN technique and also the influence of age and gender on the differences of pain perception.
Methods: Sixty patients with non-specific neck pain were randomly assigned to either the control or interventional groups. Only DN was performed for the control group, while patients in the intervention group, were asked to count backwards from 10 to 1 while slowly breathing in and out without letting their attention be distracted during the DN. The level of pain perception was evaluated immediately after DN by using numeric rating scale (NRS). The ethical approval was obtained by the Ethics Committee of the National Hospital, Kandy.
Results: A significant difference was noted (p<0 0.05) in NRS pain scores between control and the intervention groups regardless of the gender and the age category.
Conclusion: The counting down distraction technique appears to be effective in improving pain perception during DN in the patients with non-specific neck pain.
Dual TCR-Expressing T Cells in Cancer: How Single-Cell Technologies Enable New Investigation
Authors: Muhowski Elizabeth M , Rogers Laura M
Published: May 2023

TCR diversity measures are often used to understand the immune response in cancer. Traditional measures of diversity rely on bulk RNA sequencing (RNAseq) of the β-chain variable regions. However, the full αβ TCR repertoire is a combination of both the α- and β-chains, which are encoded by separate genes. In contrast with bulk RNAseq, single-cell RNAseq (scRNAseq) allows paired chain analyses, yielding a more accurate measure of the repertoire. Interestingly, ∼30% of mature peripheral T cells express multiple TCR alleles (e.g., two α-chains) and may exhibit dual Ag specificity. scRNAseq has become increasingly common, and data from both human and animal studies are publicly available. However, routine workflows discard secondary TCR alleles and focus on a single TCR clone per cell. This perspectives piece emphasizes why this may not be good practice and highlights unanswered questions in the field of T cell dual specificity.