bluuebunny/crossref_metadata_2025 huggingface dataset:
Modeling a Coronal Mass Ejection as a Magnetized Structure with EUHFORIA
Authors: Sindhuja G. , Singh Jagdev , Asvestari E. , Raghavendra Prasad B.
Published: January 2022

We studied an Earth-directed coronal mass ejection (CME) that erupted on 2015 March 15. Our aim was to model the CME flux rope as a magnetized structure using the European Heliospheric Forecasting Information Asset (EUHFORIA). The flux rope from eruption data (FRED) output was applied to the EUHFORIA spheromak CME model. In addition to the geometrical properties of the CME flux rope, we needed to input the parameters that determine the CME internal magnetic field like the helicity, tilt angle, and toroidal flux of the CME flux rope. According to the FRED technique geometrical properties of the CME flux rope are obtained by applying a graduated cylindrical shell fitting of the CME flux rope on the coronagraph images. The poloidal field magnetic properties can be estimated from the reconnection flux in the source region utilizing the post-eruption arcade method, which uses the Heliospheric Magnetic Imager magnetogram together with the Atmospheric Imaging Assembly (AIA) 193 Å images. We set up two EUHFORIA runs with RUN-1 using the toroidal flux obtained from the FRED technique and RUN-2 using the toroidal flux that was measured from the core dimming regions identified from the AIA 211 Å images. We found that the EUHFORIA simulation outputs from RUN-1 and RUN-2 are comparable to each other. Overall using the EUHFORIA spheromak model, we successfully obtained the magnetic field rotation of the flux rope, while the arrival time near Earth and the strength of the interplanetary CME magnetic field at Earth are not as accurately modeled.
Potential of hydroxybenzoic acids from Graptopetalum paraguayense for inhibiting of herpes simplex virus DNA polymerase – metabolome profiling, molecular docking and quantum-chemical analysis
Authors: Todorova Nadezhda , Rangelov Miroslav , Dincheva Ivayla , Badjakov Ilian , Enchev Venelin , Markova Nadezhda
Published: January 2022

According to our previous investigation the total methanol extract from Graptopetalum paraguayense E. Walther demonstrates a significant inhibitory effect on herpes simplex virus type 1 (HSV-1). To clarify what causes this inhibitory activity on HSV-1, a metabolic profile of the plant was performed. Three main fractions: non-polar substances, polar metabolites and phenolic compounds were obtained and gas chromatography–mass spectrometry (GC-MS) analysis was carried out. Since it is well known that phenolic compounds show a significant anti-herpes effect and that viral DNA polymerase (DNApol) appears to play a key role in HSV virus replication, we present a docking and quantum-chemical analysis of the binding of these compounds to viral DNApol amino acids. Fourteen different phenolic acids found by GC-MS analyses, were used in molecular docking simulations. According to the interaction energies of all fourteen ligands in the DNApol pockets based on docking results, density functional theory (DFT) calculations were performed on the five optimally interacting with the receptor acids. It was found that hydroxybenzoic acids from phenolic fraction of Graptopetalum paraguayense E. Walther show a good binding affinity to the amino acids from the active site of the HSV DNApol, but significantly lower than that of acyclovir. The mode of action on virus replication of acyclovir (by DNApol) is different from that of the plant phenolic acids one, probably.
Achnanthidium bratanense sp. nov. (Bacillariophyceae, Achnanthidiaceae), a new diatom from the Lake Bratan (Bali, Indonesia)
Authors: Kapustin Dmitry A. , Glushchenko Anton M. , Kulikovskiy Maxim S.
Published: January 2022

A new species, Achnanthidium bratanense, is described from Lake Bratan, located on the island of Bali (Indonesia). The morphology of this species was analyzed with light (LM) and scanning electron microscopy (SEM). A. bratanense is characterized by linear-elliptic to nearly elliptic valves with convex margins and rounded, broadly subcapitate apices. The striae of this species are hardly discernable under LM; they are weakly radiate throughout the valve and composed of one to four large transapically elongated areolae of different length and shape. The most similar taxon to A. bratanense is A. macrocephalum, a species described from Sumatra, another Indonesian island. The differences of A. bratanense from similar taxa are discussed.
A historical specimen of the Fishing Cat, Prionailurus viverrinus (Bennett, 1833) (Carnivora, Felidae) from Singapore in the zoological collection of the Naturalis Biodiversity Center, Leiden
Authors: Jusoh Wan F. A. , Chua Marcus A. H. , Bakker Piet A. J. , Kamminga Pepijn , Weiler Danièle , Rookmaaker Kees , Low Martyn E. Y.
Published: January 2022

The Fishing Cat is not a species known to inhabit Singapore. However, a historical specimen stated to have come from Singapore in 1819 and attributed to Pierre-Médard Diard (RMNH.MAM.59688) is now housed at Naturalis Biodiversity Center, Leiden, the Netherlands. Two hundred years after it was obtained, the mounted skin and skull of this specimen, including specimen labels, were photographed and digitally catalogued. Four sets of annotations from labels and a document detailing records and a receipt of specimens sent by Diard to Leiden are presented to ascertain the specimen’s identity, followed by a historical account of Diard based on a reconstruction of the timeline of key events of Singapore’s natural history. Subsequently, the specimen is examined to confirm its taxonomic identity using comparative morphometrics with other museum specimens, and data associated with the specimen are analysed to determine the origins of this specimen. We conclude that the current evidence does not allow confirmation of the specimen’s status as having been collected in Singapore or being obtained from the pet trade. If the specimen was an imported specimen, it would point towards a trade in rare and large animals in Singapore and the region from as early as 1819. Presently, the specimen remains one of the few extant zoological specimens obtained in Singapore in 1819 and the only one currently known outside of England.
La longue construction de la politique de prévention de la délinquance
Authors: Boudou Patricia
Published: January 2022

Pour comprendre ce qu’est la politique publique de prévention de la délinquance en France, il convient de revenir sur son histoire. En effet, de l’engagement des collectivités territoriales à la coproduction avec les citoyens, la prévention de la délinquance a connu différents modes de gouvernance. Elle a également vu, au fil des années, son champ d’action s’élargir aux transports ou encore à l’école. Patricia Boudou, gérante du cabinet Independant Social Risk Consulting (ISRC), propose une lecture historique pour mieux appréhender le présent et la complexité de ce domaine d’intervention.
S’adapter au contexte local : la déclinaison de la stratégie nationale de prévention de la délinquance dans l’Ain
Authors: Sarlandie de La Robertie Catherine
Published: January 2022

Attendue depuis plusieurs années, la nouvelle stratégie nationale de prévention de la délinquance a été officialisée en décembre 2020. Cette feuille de route pose les jalons d’une politique nationale que doivent s’approprier localement tous les acteurs concernés. En effet, les déclinaisons territoriales de la stratégie nationale doivent tenir compte des spécificités et des réalités de terrain. Catherine Sarlandie de La Robertie, préfète de l’Ain, présente les grands axes de la stratégie nationale et comment celle-ci a été déployée dans le département.
PoliCité, un projet participatif pour améliorer les relations entre Police et populations
Authors: Balazard Hélène , Purenne Anaïk
Published: January 2022

Les théoriciens de la démocratie affirment que les politiques publiques gagnent en efficacité lorsqu’elles ont associé des citoyens à leur élaboration. Et ce constat s’applique également aux politiques de sécurité ou de prévention de la délinquance. C’est ce que nous prouvent Hélène Balazard et Anaïk Purenne, sociologues à l’ENTPE (École nationale des travaux publics de l’État), en nous racontant la recherche-action participative PoliCité.
Les ateliers de tranquillité publique de proximité à Chambéry
Authors: Bion Dominique
Published: January 2022

La nouvelle stratégie nationale de prévention de la délinquance vise à mieux associer les habitants aux dispositifs qui sont mis en œuvre pour eux. Dans ce cadre, à Chambéry, des ateliers de proximité ont été inscrits dans le contrat de sécurité intégrée signé le 22 septembre 2021. Dominique Bion, directeur prévention tranquillité publique et coordonnateur du Conseil local de sécurité et de prévention de la délinquance et de la radicalisation (CLSPDR), revient en détail sur la méthode et la plus-value de ce dispositif.
À l’école de Molière : la réception de Molière en Pologne aux XVII e et XVIII e siècles
Authors: Kencki Patryk
Published: January 2022

La première représentation d’une pièce de Molière en Pologne a eu lieu encore du vivant de l’auteur. Il s’agit de Sganarelle ou Le Cocu imaginaire mis en scène le 5 mars 1669, dans le palais varsovien de Jan Andrzej Morsztyn. Avant l’inauguration de la scène nationale, le 19 novembre 1765 à Varsovie, bien d’autres pièces de Molière allaient encore être accueillies dans les théâtres royaux, les cours des magnats, les écoles conventuelles ainsi que sur les scènes professionnelles.
L’impromptu de Bohême : la réception de Molière en pays tchèques
Authors: Boutan Jean
Published: January 2022

La réception de Molière en pays tchèques tombe au xviii e  siècle dans une période de transition où les techniques de jeu évoluent d’un théâtre d’improvisation au théâtre à texte que nous connaissons aujourd’hui, si bien qu’on a pu la croire insignifiante au vu du caractère lacunaire des sources. L’étude du répertoire montre pourtant de nombreux phénomènes de transferts, d’assimilation et d’adaptation libre, qui participent à cette diffusion invisible de l’œuvre de Molière en Europe centrale.
La société de cour sur la scène hongroise : le théâtre de Molière et A filosófus ( Le Philosophe , 1777) de György Bessenyei
Authors: Studer-Kovacs Veronika
Published: January 2022

L’article propose l’analyse d’un code moral caractéristique de la culture viennoise des années 1770 et, à travers lui, des éléments empruntés au théâtre de Molière dans une comédie de György Bessenyei, auteur canonique de la littérature hongroise du xviii e  siècle, formé à Vienne. L’article s’intéresse surtout à la façon dont Bessenyei dessine, en adaptant le modèle du Misanthrope , des portraits de l’aristocratie de cour, des intellectuels cosmopolites et des nobles de campagne hongrois.
Exponential stabilization of the problem of transmission of wave equation with linear dynamical feedback control
Authors: Guo Zhiling , Chai Shugen
Published: January 2022

In this paper, we address exponential stabilization of transmission problem of the wave equation with linear dynamical feedback control. Using the classical energy method and multiplier technique, we prove that the energy of system exponentially decays.
A modified regression-cum-ratio estimator for finite population mean in presence of nonresponse using ranked set sampling
Authors: Fatima Mehreen ,   Department of Statistics, National College of Business Administration and Economics, Lahore 54000, Pakistan, Shahbaz Saman Hanif , Hanif Muhammad , Shahbaz Muhammad Qaiser ,   Department of Statistics, King Abdulaziz University, Jeddah, Saudi Arabia
Published: January 2022

Several situations arise where decision-making is required for some characteristics of an asymmetrical population for example estimation of the weekly number of server breakdowns at a company. The estimation methods based upon classical sampling designs are not suitable in such situations and some specialized methods and/or estimators are required. The ranked set sampling is a procedure that is suitable in such situations. In this paper, a new estimator is proposed that can be used to estimate population characteristics in case of asymmetrical populations. The proposed estimator is useful for estimation of population mean in the presence of non-response in study variable by using ranked set sampling procedure. The estimator is based upon two auxiliary variables to reduce the effect of asymmetry. The use of two auxiliary variables is also helpful in minimizing the variation in the estimation of the population mean of the study variable. The ranked set sampling procedure is used to get better accuracy as the actual measurements may be time-consuming, expensive, or difficult to obtain in a small sample size. The use of ranked set sampling also reduces the effect of asymmetry in the characteristics under study. The expressions for the mean square error and bias for the proposed estimators have been derived. The performance of the proposed estimator is evaluated by using real-life data and a simulation study is carried out to get an overview of efficiency. The relative efficiency of the proposed estimator is compared with some existing estimators. It has been found that the proposed estimator is highly efficient as compared with Mohanty's regression cum ratio estimator in simple random sampling and is more reliable in the case of non-response with a small sample size.
Breaking Ties: Regression Discontinuity Design Meets Market Design
Authors: Abdulkadiroglu Atila , Angrist Joshua D. , Narita Yusuke , Pathak Parag
Published: January 2022

Many schools in large urban districts have more applicants than seats. Centralized school assignment algorithms ration seats at over‐subscribed schools using randomly assigned lottery numbers, non‐lottery tie‐breakers like test scores, or both. The New York City public high school match illustrates the latter, using test scores and other criteria to rank applicants at the city's screened schools, combined with lottery tie‐breaking at the rest. We show how to identify causal effects of school attendance in such settings. Our approach generalizes regression discontinuity methods to allow for multiple treatments and multiple running variables, some of which are randomly assigned. The key to this generalization is a local propensity score that quantifies the school assignment probabilities induced by lottery and non‐lottery tie‐breakers. The utility of the local propensity score is demonstrated in an assessment of the predictive value of New York City's school report cards. Schools that earn the highest report card grade indeed improve SAT math scores and increase graduation rates, though by much less than OLS estimates suggest. Selection bias in OLS estimates of grade effects is egregious for screened schools.
Low Interest Rates, Market Power, and Productivity Growth
Authors: Liu Ernest , Mian Atif , Sufi Amir
Published: January 2022

This study provides a new theoretical result that a decline in the long‐term interest rate can trigger a stronger investment response by market leaders relative to market followers, thereby leading to more concentrated markets, higher profits, and lower aggregate productivity growth. This strategic effect of lower interest rates on market concentration implies that aggregate productivity growth declines as the interest rate approaches zero. The framework is relevant for antitrust policy in a low interest rate environment, and it provides a unified explanation for rising market concentration and falling productivity growth as interest rates in the economy have fallen to extremely low levels.
Goals and Gaps: Educational Careers of Immigrant Children
Authors: Carlana Michela , La Ferrara Eliana , Pinotti Paolo
Published: January 2022

We study the educational choices of children of immigrants in a tracked school system. We first show that immigrants in Italy enroll disproportionately into vocational high schools, as opposed to technical and academically‐oriented ones, compared to natives of similar ability. The gap is greater for male students and it mirrors an analogous differential in grade retention. We then estimate the impact of a large‐scale, randomized intervention providing tutoring and career counseling to high‐ability immigrant students. Male treated students increase their probability of enrolling into the high track to the same level of natives, also closing the gap in grade retention. There are no significant effects on immigrant girls, who exhibit similar choices and performance as native ones in absence of the intervention. Increases in academic motivation and changes in teachers' recommendation regarding high school choice explain a sizable portion of the effect. Finally, we find positive spillovers on immigrant classmates of treated students, while there is no effect on native classmates.
A ReMeDI for Microstructure Noise
Authors: Li Z. Merrick , Linton Oliver
Published: January 2022

We introduce the Realized moMents of Disjoint Increments (ReMeDI) paradigm to measure microstructure noise (the deviation of the observed asset prices from the fundamental values caused by market imperfections). We propose consistent estimators of arbitrary moments of the microstructure noise process based on high‐frequency data, where the noise process could be serially dependent, endogenous, and nonstationary. We characterize the limit distributions of the proposed estimators and construct confidence intervals under infill asymptotics. Our simulation and empirical studies show that the ReMeDI approach is very effective to measure the scale and the serial dependence of microstructure noise. Moreover, the estimators are quite robust to model specifications, sample sizes, and data frequencies.
Dynamically Aggregating Diverse Information
Authors: Liang Annie , Mu Xiaosheng , Syrgkanis Vasilis
Published: January 2022

An agent has access to multiple information sources, each modeled as a Brownian motion whose drift provides information about a different component of an unknown Gaussian state. Information is acquired continuously—where the agent chooses both which sources to sample from, and also how to allocate attention across them—until an endogenously chosen time, at which point a decision is taken. We demonstrate conditions on the agent's prior belief under which it is possible to exactly characterize the optimal information acquisition strategy. We then apply this characterization to derive new results regarding: (1) endogenous information acquisition for binary choice, (2) the dynamic consequences of attention manipulation, and (3) strategic information provision by biased news sources.
Significant Enhancement of Classification Efficiency for Automated Traffic Management System
Authors: Kumar Upendra , Tiwari Pawan Kumar , Mishra Tejasvi , Jaiswar Lalita , Ali Safiya
Published: January 2022

India as a country has 17.7% of the world’s population with the limited availability of land resource which is about only 2.4% of the world’s land. Being a developing nation and such huge population to accommodate, a number of problems can be seen on a daily basis such as high traffic congestion and unmanaged traffic on the roads. Irritating rush, wastage of time and fuel, are being severe hindrance to make the transportation comfortable. As a country, due to availability of limited lands, the only option is to manage the traffic smartly. Hitherto, a number of attempts have been made in this regard, still the statically managed traffic lights can be seen at the junction of roads. So in this work, it was tried to give an easy, but implementable method to manage traffic lights effectively. A hybrid approach based enhanced Convolution Neural Network model was used for the classification and have given the comparison with other model based technique i.e. Support Vector Machine. Our proposed enhanced model produced 91.01% accuracy and it is able to outperform the existing model.
Encrypted Information Transmission by Enhanced Steganography and Image Transformation
Authors: Pandey Binay Kumar , Pandey Digvijay , Agarwal Ashi
Published: January 2022

A deep neural network is used to develop a covert communication and textual data extraction strategy based on steganography and picture compression in such work. The original input textual image and cover image are both pre-processed before the covert text-based pictures are separated and implanted into the least significant bit of the cover object picture element using spatial steganography. Following that, stego-images are compressed and transformed(by using Leh Transformation) to provide a higher-quality image while also saving storage space at the sender's end. After then, the stego-image will be transmitted to the receiver over a communication link. At the receiver's end, steganography and compression are then reversed. This work contains a plethora of issues, making it an intriguing subject to pursue. The most crucial component of this task is choosing the right steganography and picture compression technology. The proposed technology, which combines picture steganography with compression and transformation, delivers higher peak signal-to-noise efficiency.
Consumer Engagement With Visual Content on Instagram
Authors: Rahman Wan Nurhayati Abdul , Mutum Dilip S. , Ghazali Ezlika M.
Published: January 2022

Despite Instagram’s popularity among the Y and Z generation consumers, social media research investigating factors that can influence customer engagement on Instagram remains limited. The uses and gratifications theory underpins this study which investigates how social media marketing of prominent Malaysian brands on Instagram impacts customer engagement. ScrapeStorm web scraper tool was used to extract posts and comments from the public Instagram accounts of four notable Malaysian brands. The findings reveal that different features of social media, affect consumer engagement differently. Social media influencers had a positive impact on consumption and creation-based customer engagement. Contextual features are negatively correlated with contribution-based customer engagement. In terms of content, videos had greater engagement rates, followed by images of people and images without people. Results also show that consumers reacted positively to informative textual content. Some implications for theory and practice are highlighted.
Predicting Customer Loyalty in the Mobile Banking Setting
Authors: Bui Nhuong , Moore Zachary , Wimmer Hayden , Pham Long
Published: January 2022

This study uses a novel theoretical approach that combines two multidimensional service quality models that focus on customer satisfaction, perceived value, and customer loyalty as outcomes of service quality in the context of mobile banking. Additionally, the study assesses the potential moderating effects of switching costs between mobile banking service quality and customer loyalty. The study found a strong direct effect between service quality, perceived value, customer satisfaction, and loyalty. The moderating effect of switching costs was found to be inconsequential to customer loyalty. The study demonstrates that financial institutions should focus on building and maintaining functional, secure mobile banking applications to enhance customer loyalty and retention.
Achieving Recommendation Intention in Mobile Banking
Authors: Vishnani Sushma , Tripathi Shalini Nath , Srivastava Shalini
Published: January 2022

This study explores the critical elements driving the recommendation intention of mobile banking users in India. It explores the relationship between ease of use and recommendation intent via serially mediating roles of satisfaction and continued intention. It also explores the relationship between cost and recommendation intent by studying the serially mediating roles of satisfaction and continued intention. It combines the two resulting in an integrated framework. The study utilized the analytical approach by Hayes (2013) for testing the hypothetical model. The path coefficients were calculated using Model 6 (PROCESS). Our findings reveal that satisfaction and continued intention are serially mediating the relationship between ease of use and recommendation intention as well as cost and recommendation intention. The major contribution of this research study to existing literature is that it culminates with the ‘action’ of ‘recommendation to use’ rather than continued intention.
A Simplified Approach of Design Pile Foundation on Liquefiable Soil in India
Authors: Dutta Sayantan , Nanda Radhikesh Prasad
Published: January 2022

In India piles are designed as per IS 2911:2010 (Part 1) for different soil conditions considering all the load criteria. But there is no such provision in Indian Standard Codes for designing piles in potentially liquefiable soils. In this paper, the design of pile foundation in liquefiable soil is discussed. The provisions for design of pile foundations in liquefiable soil from different codes of practice from different countries are studied and the design approaches for the same are discussed based on those studies (Puri et al. 2008). The load bearing capacity of a pile in liquefied soil and non-liquefied soil is made based on the force equilibrium approach. A standardize graph which may be useful for practicing engineers has been plotted. Further, a comparative study is made based on the force equilibrium approach in Indian conditions.
Towards Better Representation of Context Into Recommender Systems
Authors: Zhong Jinfeng , Negre Elsa
Published: January 2022

Context-aware recommender systems (CARSs) are attracting more and more attention from both the academic community and from industry. Users' contextual situations (e.g., location, time, companion, etc.) which can influence their ratings on items, are taken into consideration. Therefore, more accurate and personalized recommendations can be generated. The integration of contextual information in recommender systems to better model users' preferences under different contextual situations is a key research topic. In this paper, the authors propose a new method for representing contextual situations in recommender systems based on the influence of contextual conditions on ratings using Pearson Correlation Coefficient. The authors show the effectiveness of the proposed method compared to state-of-art methods by experiments on three different datasets widely used in CARSs research community.
Leveraging Regulative Learning Facilitators to Foster Student Agency and Knowledge (Co-)Construction Activities in CSCL Environments
Authors: Sadegh Tayebeh
Published: January 2022

In this study, by combing three research fields of regulative learning, learning analytics (LA) and students' agency in computer-supported collaborative learning (CSCL), the authors tried to illuminate how students regulated their learning though group composition, peer assessment, and LA strategies to foster agency and knowledge (co-)construction activities in CSCL environments. To fulfill this aim, 60 students from Fasa University, Iran were assigned to experimental and control groups based on their self-regulated learning (SRL) skills (high, medium, low, and very low SRL skills). Data analysis confirmed the positive relationship between group composition, peer assessment, LA, regulative learning, agency, and knowledge (co-)construction. The results revealed that through applying group composition, peer assessment, and LA, socially-shared regulated learning, co-regulated learning, and consequently SRL skills were improved, which finally fosters agency and knowledge (co-)construction activities in CSCL environments.
Does Technological Innovation Divide Economic Growth From Sustainable Development?
Authors: Mayenberger Carlos Scheel , Perez-Castillo David
Published: January 2022

The purpose of this paper is to explore if technological innovation strategies produce economic incremental returns on the competitiveness indexes, and at the same time, produce an unfavorable impact on the social, environmental, and human systems of a region. Also, under what conditions or drivers this happens. Metrics of performance of innovation strategies were used on cities that have had remarkable innovative indicators. The correlation between innovation performance, environmental recovering, productivity, and social quality of life was analyzed. It was found that regulations, rule of law, incentives, inclusive use of technology, systemic vision, flatten organizations, hierarchical structures, and decentralized management responsibilities help in leveraging the impact of technological innovation to drive economic growth; however, the impact on the environment regeneration and on the social gap is highly questionable.
To Analyze the Relationship Between Strength, Weakness, Opportunities, and Threats of Indian Coal Mining Industries Towards Sustainable Development
Authors: Bagri Gyanendra Prasad , Garg Dixit , Agarwal Ashish
Published: January 2022

Mining Industries are a significant contributor to the economic growth of countries. Mining industries provide basic raw materials to all the manufacturing industries, whether their poor environmental image. However, over the last three decades, the mining and mineral industries adopted environmental management practices toward environmental protection and responsiveness of societal pressure. To overcome challenges to implement green practices in Indian Coal Mining Industries, analyze Strength, Weakness, Opportunities and Threat (SWOT) existence in industries. Addition of this work fuzzy decision-making trial and evaluation laboratory (DEMATEL) method is used to determine the relationship between SWOT factors which help develop better strategies to overcome environmental as well as economic issues.
Leveraging Virtual Learning to Facilitate Training Transfer in VUCA Times
Authors: Dixit Ramnath , Sinha Vinita
Published: January 2022

The purpose of this case study is to highlight the efficacy of Virtual Learning as a tool to facilitate training transfer of behavioral skills and knowledge imparted during the course of a leadership intervention in a manufacturing firm during the pandemic lockdown. A mixed-method approach involving qualitative depth interviews and survey questionnaire responses were used to draw logical inferences. The findings of the study revealed that virtual learning supports effective training transfer of behavioral skills and knowledge. The learners also highlighted virtual learning to be offering convenience and an enriching learning experience. The study offers practical insights for learning and development practitioners on leveraging virtual learning as a powerful tool to promote the transfer of trained knowledge at the workplace. The study is first of its kind as it offers key insights on training transfer in organizational learning and development context, gathered from personal experiences of learners involved in the training intervention conducted during the pandemic lockdown.
Rhizomatic Learning and Use of Mobile Instant Messaging Platforms
Authors: Makoza Frank , Bagui Laban
Published: January 2022

Rapid development and adoption of mobile technologies including Mobile Instant Messaging (MIM) platforms have transformed teaching and learning practices over the past decade. This paper presents an analysis of how students used WhatsApp as an example of a MIM platform to organise their learning activities. Drawing on Rhizomatic Learning Theory (RLT), the study showed that WhatsApp supported students to navigate through a complex network of learning where knowledge was generated beyond the confines of the formal learning context. WhatsApp supported learners during the transition to remote learning that was introduced during the lockdown due to the Covid-19 pandemic. Further, WhatsApp use supported learners to cope well with new learning experiences and practices. The study offers insights into the perspective of learners on the use of technology during challenging and uncertain times. The insights can be useful for lecturers when developing technology strategies and teaching best practices during uncertain times.
Tech Transition
Authors: Walia Jasdeep Singh , Kumar Pawan
Published: January 2022

The purpose of this paper is to evaluate the levels of awareness, degree of familiarity, willingness of educators to embrace the Artificial Intelligence (AI) environment and to evaluate the potential benefits that they can have from AI in their teaching activities. Exploratory research was conducted at 14 business schools and to achieve the goals of the study, factor analysis was carried out. Four factors were identified from factor analysis which was given names based on the mean and standard deviation of factor scores. This can act as a reference for those business schools that have begun offering management education using AI or are planning to use AI in the future.
Benefits of Open Government Data Initiatives in Saudi Arabia and Barriers to Their Implementation
Authors: Mutambik Ibrahim , Nikiforova Anastasija , Almuqrin Abdullah , Liu Yulong David , Floos Ahmad Yahya M. , Omar Taha
Published: January 2022

Open Government Data (OGD) initiatives can deliver many cultural and institutional benefits. This is why many governments are trying to establish an OGD ecosystem. However, although many countries have made good progress in doing so, some face significant challenges. In such cases, country-specific studies can prove valuable in understanding not only the current situation, but also in defining the obstacles to progress. As far as the authors of this paper can determine, this study is the first to examine the benefits of, and barriers to, implementation of the OGD initiative Saudi Arabia. The study conducts and analyses interviews with Saudi Arabian government officials in both leadership and technical positions, in order to obtain an informed view of the OGD initiative in Saudi. The study contributes to the existing knowledge base by identifying the main benefits of the Saudi Arabian Open Government Initiative and the barriers to its implementation.
Bilateral Superficial Serratus Anterior Plane Block in a Pediatric Patient for Post-operative Analgesia Undergoing ASD Repair Via Median Sternotomy- A Case Report
Authors: Tewari Prabhat , Hajela Kushal , Ahmad Syed Shabbir
Published: January 2022

Serratus Anterior fascial plane (SAP) block is a high-volume interfascial plane block that has been used in adult patients in cardiac surgery with good postoperative pain relief. We report a case of a 9 year old female child who underwent ostium secundum atrial septum defect closure and was given bilateral SAP block. The patient was extubated within 4 hours of surgery and was pain free in the postoperative period without the use of any opioids.
Time Limiting Boundaries of Reversible Clinical Death in Rats Subjected to Ultra-Deep Hypothermia
Authors: Gagarinskiy Evgeniy L , Averin Aleksey S , Uteshev Viktor K , Sherbakov Pavel V , Telpuhov Vladimir I , Shvirst Nikolay E , Karpova Yulya A , Gurin Artem E , Varlachev Aleksandr V , Kovtun Anatoliy L , Fesenko Eugeny E
Published: January 2022

Background:

It is well known that body temperature maintenance between 20 and 35°C prevents hypoxic damage. However, data regarding the ideal duration and permissible temperature boundaries for ultra-deep hypothermia below 20°C are rather fragmentary. The aim of the present study was to determine the time limits of reversible clinical death in rats subjected to ultra-deep hypothermia at 1–8°C.

Results:

Rat survival rates were directly dependent on the duration of clinical death. If clinical death did not exceed 35 min, animal viability could be restored. Extending the duration of clinical death longer than 45 min led to rat death, and cardiac functioning in these animals was not recovered. The rewarming rate and the lowest temperature of hypothermia experienced did not directly influence survival rates.

Conclusions:

In a rat model, reversible ultra-deep hypothermia as low as 1–8°C could be achieved without the application of hypercapnia or pharmacological support. The survival of animals was dependent on the duration of clinical death, which should not exceed 35 min.
Performance of three-dimensional and ultra-high-definition (4K) technology in laparoscopic surgery
Authors: Singla Vitish , Bhattacharjee Hemanga K. , Gupta Ekansh , Singh Deepti , Mishra Ashwani K. , Kumar Dalim
Published: January 2022

Background:

The technology in the field of laparoscopy is rapidly evolving and is primarily focussed on increasing the quality of image and depth perception in the form of 4K and three-dimensional (3D) technology. There has been no conclusion yet regarding the better technology.

Methods:

A systematic search was performed independently by two authors across MEDLINE, Google Scholar and Embase using the PRISMA guidelines. All randomised control trials comparing 3D and 4K technologies were included. Meta-analysis was conducted using random-effects statistics for time taken for different tasks across the studies.

Results:

The search strategy revealed a total of 1835 articles, out of which nine studies were included. Three studies showed no superiority of 3D over 4K, while the remaining six did. Meta-analysis for the time taken for peg transfer favoured 3D over 4K (overall effect: Z = 2.12; P = 0.03). Forest plots for time taken for suturing (Z = 1.3; P = 0.19) and knot tying (Z = 1.7; P = 0.09) also favoured 3D over 4K; the results however were statistically insignificant. Path length was reported by two studies and was found to be lesser in the 3D group. Two studies measured the workload by NASA/Surg-TLX score, which was lower in the 3D group. Visual side effects were found to be higher in the 3D group.

Conclusion:

3D technology is likely to result in a shorter operative time and better efficiency of movement as compared to the 4K technology by the virtue of its better depth perception.
Cardiac Tamponade as First Manifestation of Primary Hypothyroidism
Authors: Shekhawat Vikram Singh , Bajaj Nitin , Gupta Rajeev Mohan
Published: January 2022

Pericardial effusion is commonly present in patients with moderate-to-severe hypothyroidism. However, large pericardial effusion causing cardiac tamponade (CT) is extremely rare. We report an atypical presentation of primary hypothyroidism (PH) where a young male presented with CT as the first manifestation of PH. The patient was treated with an immediate pericardiocentesis followed by levothyroxine replacement and showed complete resolution of pericardial effusion on follow-up. Hypothyroidism should be suspected as a possible etiology of massive pericardial effusion/CT in patients who have associated signs and symptoms of hypothyroidism and have bradycardia in the setting of CT.
Inhalant Abuse
Authors: Saini Rajiv , Singh Harpreet , Chail Amit , Datta Krishnendu , Adhvaryu Arka
Published: January 2022

Inhalant abuse is common in adolescents and young people. However, awareness about its harmful effects is low, and the potential to cause dependence remains a cause of concern. Inhalant abuse is often associated with underlying novelty-seeking traits, which can also predict propensity for other substances of abuse. Inhalants are cheap, freely available, and legal to possess and escape detection in vulnerable groups. There is a need to spread awareness about the harmful effects of inhalants and devise effective primary and relapse prevention strategies.
Role of Point-of-Care Ultrasound in Grading the Severity and Early Diagnosis of High-altitude Pulmonary Edema at a Peripheral Hospital
Authors: Sud Saurabh , Kumar Yogesh , Bharadwaj Saurabh , Dwivedi Deepak , Kumar Arun , Garg Archit
Published: January 2022

Background and Aims:

Troops deployed at high-altitude area (HAA) suffer from various high-altitude illnesses (HAIs) including high-altitude pulmonary edema (HAPE). There are various criteria to diagnose and assess the severity of HAPE, but point-of-care ultrasound (POCUS) of the lung has also been used in isolation by physicians. The aim is to assess whether POCUS of the lung improves the ability to diagnose the severity of HAPE.

Methodology:

A retrospective, cross-sectional descriptive study was planned for the patients treated for HAPE (n = 46) at our hospital from January 2019 to March 2020. Prehospital admission data, hospital admission data, and discharge data for the first-time inductees and reinductees were collected from the central hospital admission registry and central database of the medical department and intensive care unit.

Results:

The incidence of HAPE was 2.2 per 1000. First-time inductees (n = 30) were affected more when compared to reinductees (n = 16) and the maximum were at the third stage of HAA. POCUS of the lung facilitated the diagnosis of the six patients with mild HAPE with no positive radiological features.

Conclusions:

POCUS of the lung should be routinely used by the medical officers deployed at high altitudes. It will increase the diagnostic rate of HAPE with meticulous grading of the severity, thereby aiding in formulating the case-specific treatment protocol.
Pancytopenia as the Initial Presentation of Metastatic Prostate Cancer
Authors: Mangal Vishal , Singhal Paresh , Tilak TVSVGK , Singh Sharanjit , Hasvi Jayaraj
Published: January 2022

Prostate cancer (PC) is the most prevalent malignancy in men (after lung cancer). It commonly presents with lower urinary tract symptoms such as urgency, hesitancy, and poor stream besides some patients may present with bone pain. Anemia is the most common presentation of solid tumors with bone marrow involvement, however, pancytopenia as the presenting feature is rare. Here, we describe a 60-year-old man with significant comorbidities in the past who now presented with symptomatic anemia without any urinary symptoms. On evaluation, he was found to have pancytopenia with elevated alkaline phosphatase levels. Work up for pancytopenia revealed metastatic deposits from the adenocarcinoma in the bone marrow. Further, he was diagnosed as a case of PC on transrectal prostate biopsy and managed with denosumab and maximal androgen blockade.
Immunoglobulin G Kappa Lymphoplasmacytic Lymphoma with Associated Al Amyloidosis
Authors: Kaur Gurpreet , Tripathi Preeti , Pati Hara Prasad , Tyagi Seema
Published: January 2022

Lymphoplasmacytic lymphoma (LPL) is a low-grade B-cell neoplasm, composed of small B-lymphocytes, plasmacytoid lymphocytes, and plasma cells involving bone marrow and sometimes lymph nodes or spleen and forms 1% of all non-Hodgkin lymphomas. LPL with bone marrow involvement and an Immunoglobulin M (IgM) monoclonal gammopathy of any concentration is designated as Waldenström macroglobulinemia (WM). Due to their frequent co-occurrence, the terms LPL and WM are often used interchangeably in clinical practice. However, although the clinical diagnosis of WM is restricted to cases with an IgM monoclonal protein, the World Health Organization recognizes that LPL can rarely present with paraproteins of immunoglobulin G (IgG) or immunoglobulin A (IgA). LPL associated with non IgM gammopathies are extremely rare and form >5% of all LPLs. We hereby present the case of a 65-year-old female with no previous co morbidities who presented with nonspecific complaints of weight loss, easy fatigability, and night sweats. Examination was within the normal limits except for the presence of subcentimetric axillary lymphadenopathy. She was found to have anemia with an altered A/G ratio M spike of 2.10 g/which was IgG kappa on immunofixation electrophoresis. The bone marrow revealed a mixture of lymphocytes, lymphoplasmacytoid cells, and plasma cells along with the presence of amyloid deposits. MYD88 L265P mutation done on peripheral blood was positive, and based on these, she was diagnosed with a case of IgG Kappa LPL with associated amyloidosis.
Management of a Neonatal Femoral Shaft Fracture Following Breech Presentation
Authors: Awariwar Mahesh D. , Iqbal Mohammed Schezan , Jayamol M. A. K. , Bhat Vivek
Published: January 2022

Birth injuries, including long bone fractures, are most often observed following breech delivery or difficult deliveries. Although a long bone fracture is a relatively rare complication, femoral fractures constitute one of the most common forms of injury of the lower extremity presenting in newborns. A low birth weight, female neonate was delivered by C-section with breech presentation in utero and presented with swelling and abnormal mobility of the right thigh immediately after birth. The femoral shaft fracture was successfully treated by conservative management using a Pavlik harness for 6 weeks. Even though cesarean deliveries reduce traumatic complications, especially in breech presentations, compared with vaginal delivery, they do not completely eliminate the possibility of accidental injuries to the newborn.
Uncommon Diagnostic Pitfalls of Mucoepidermoid Carcinoma on Cytology
Authors: Shelly Divya , Mishra P S , Nichat Prachi , Das A K , Chandra Pratibha
Published: January 2022

Introduction:

Diagnosis of mucoepidermoid carcinoma (MEC) on fine-needle aspiration cytology (FNAC) is grim with important diagnostic pitfalls, leading to wrong treatment decisions. This study highlights uncommon mimics of MEC on FNAC smears of major salivary glands and compares the cytologic findings with definitive histopathology diagnosis for identification of potential diagnostic pitfalls.

Methods:

This is a retrospective descriptive study of MEC cases diagnosed over a duration of 5 years (April 2015–April 2020) at a tertiary care center with available preoperative FNAC and postoperative histopathology resection specimens.

Results:

Out of a total of 18 MEC cases diagnosed by histopathologic examination, 8 (44%) were wrongly diagnosed on preoperative FNAC as a different benign or malignant entity. Further details of these cases are shared in the text.

Discussion:

Although FNAC remains an important preoperative diagnostic tool in salivary gland lesions, utmost care is required in the cases of MEC which are notorious for misinterpretation on cytology. A number of uncommon mimics, both benign and malignant, need to be considered and carefully excluded to spare the patient of avoidable miseries of misdiagnosis.

Conclusion:

MECs of salivary glands can mimic the morphology of a variety of benign as well as malignant lesions on cytology with low cyto-histologic concordance especially in cystic lesions.
Echocardiographic Manifestations in Patients on Renal Replacement Therapy and Renal Transplant Recipients
Authors: Vidya P. L. , Mishra Satish Chandra , Ramamoorthy Ananthakrishnan , Ghosh Arijit Kumar , Singh Priyanka , Sharma Ishan , Bajaj Nitin
Published: January 2022

Background:

Chronic kidney disease (CKD) patients have 20–30 times greater risk of cardiovascular morbidity and mortality. Echocardiography is quintessential in cardiovascular evaluation and monitoring in CKD patients. This study was designed to determine the echocardiographic manifestations in patients on renal replacement therapy (RRT) and recipients of renal transplantation.

Materials and Methods:

An observational cross-sectional study was undertaken in a tertiary care hospital. All CKD patients on RRT or post renal transplant were included. Patients with known cardiac disease, malignancy were excluded. Demographic details, thorough history, physical examination and 2D echocardiography were performed for the patients.

Results:

Of the 51 patients, 60% were on dialysis and remaining were post renal transplant recipients. The mean age of study population was 44.16±13.66 years, with 64.7% males. 47% of patients were of age group of 41 years to 60 years. The most common etiology of CKD was hypertension in 16 (31.4%) followed by diabetes in 11 (21.6%). Only 8 patients (15.7%) had normal echocardiograms. LVH (80.4%) was most common abnormality, followed by diastolic dysfunction (74.5%), systolic dysfunction (13.7%), mitral regurgitation (13.7%) and pericardial effusion (5.8%). Around 95.2% had concentric hypertrophy. Diastolic dysfunction was observed in 90.2% and 80.9% of cases with LVH and hypertension respectively and was significantly associated with both (p=0.001, p=0.003 respectively).

Conclusions:

Left ventricular hypertrophy was the most common abnormality in CKD patients and renal transplant recipients. Diastolic function was affected in majority of patients. Early identification of cardiac abnormalities by echocardiography prior to manifestation of cardiac complications may result in better prognosis for this patient population.