bluuebunny/crossref_metadata_2025 huggingface dataset:
Mathematical model in the banking on the ex ample of simple percentage
Authors: Jatczak Anna Małgorzata
Published: December 2021

Mathematical modeling is the description of the reality in the language of the mathematics and formal logic which creates symbols, mathematical relation and also strictly determined rules of employing them (Jaworski, Micał 2005). This article is devoted to the structure of the model describing the process of increasing the capital value within the time which basis constitutes the calculations based on the rule of simple percentage. In its content are determined the chosen, basic terms associated with the financial activity of the bank (including interest rate, interest, discount). Mathematical models are also discussed enabling to count:

the final capital for the initial capital with the fixed annual interest rate for the set time,

the initial capital which generated the determined final capital with the fixed annual interest rate for the set time,

the interest rate on the basis of the initial and final capital after certain time,

the initial value of the loan for the amount of the payoff within the fixed discount rate within the certain time,

the value of the commercial discount for one year on the basis of the initial value of the loan and the amount of its payoff.

The presented content will supply the reader with the knowledge in calculations applied in the banks associated with the simple percentage. The article constitutes the example of combination of the theoretical knowledge with the practice and it also shows how important mathematical modeling is in the modern world.
MAPPING KNOWLEDGE MANAGEMENT RESEARCH: A BIBLIOMETRIC OVERVIEW
Authors: Shashi Shashi , Centobelli Piera , Cerchione Roberto , Merigo Jose M.
Published: December 2021

In recent years, knowledge management (KM) has consistently attained considerably growing research attention. Consequently, several literature reviews have been performed addressing different topic areas of KM. This paper seeks to present a comprehensive bibliometric and network analysis on KM to understand its development from the perspective of academic communities. Subsequently, it seeks to identify the structure of associations between prior and current themes, predict emerging trends and offer a longitudinal perspective on KM research. This study used web of science database and the initial sample was trimmed down by considering only the articles contributing to KM literature, and further 8,721 KM papers published in the last 30 years were systematically evaluated. The descriptive statistics and science mapping methods employing co-citation analysis were performed with VOSviewer software. In the descriptive analysis, we have analysed publication trends over time, geographical localization of the contributing institutions, journals, most prolific authors, top-performing institutions and most cited articles. Science mapping analysis is based on co-word analysis and co-citations analysis, namely articles’ co-citations and authors’ co-citations. The main findings of this paper will help researchers and academicians to develop knowledge in a specific sub-field by analysing the research outcomes of the papers included in the body of literature.
Probing Early Supermassive Black Hole Growth and Quasar Evolution with Near-infrared Spectroscopy of 37 Reionization-era Quasars at 6.3 < z ≤ 7.64
Authors: Yang Jinyi , Wang Feige , Fan Xiaohui , Barth Aaron J. , Hennawi Joseph F. , Nanni Riccardo , Bian Fuyan , Davies Frederick B. , Farina Emanuele P. , Schindler Jan-Torge , Bañados Eduardo , Decarli Roberto , Eilers Anna-Christina , Green Richard , Guo Hengxiao , Jiang Linhua , Li Jiang-Tao , Venemans Bram , Walter Fabian , Wu Xue-Bing , Yue Minghao
Published: December 2021

We report the results of near-infrared spectroscopic observations of 37 quasars in the redshift range 6.3 < z ≤ 7.64, including 32 quasars at z > 6.5, forming the largest quasar near-infrared spectral sample at this redshift. The spectra, taken with Keck, Gemini, VLT, and Magellan, allow investigations of central black hole mass and quasar rest-frame ultraviolet spectral properties. The black hole masses derived from the Mg ii emission lines are in the range (0.3–3.6) × 109
M
⊙, which requires massive seed black holes with masses ≳103–104
M
⊙, assuming Eddington accretion since z = 30. The Eddington ratio distribution peaks at λ
Edd ∼ 0.8 and has a mean of 1.08, suggesting high accretion rates for these quasars. The C iv–Mg ii emission-line velocity differences in our sample show an increase of C iv blueshift toward higher redshift, but the evolutionary trend observed from this sample is weaker than the previous results from smaller samples at similar redshift. The Fe ii/Mg ii flux ratios derived for these quasars up to z = 7.6, compared with previous measurements at different redshifts, do not show any evidence of strong redshift evolution, suggesting metal-enriched environments in these quasars. Using this quasar sample, we create a quasar composite spectrum for z > 6.5 quasars and find no significant redshift evolution of quasar broad emission lines and continuum slope, except for a blueshift of the C iv line. Our sample yields a strong broad absorption line quasar fraction of ∼24%, higher than the fractions in lower-redshift quasar samples, although this could be affected by small sample statistics and selection effects.
Decimetric Type-U Solar Radio Bursts and Associated EUV Phenomena on 2011 February 9
Authors: Gao Guannan , Cai Qiangwei , Guo Shaojie , Wang Min
Published: December 2021

A GOES M1.9 flare took place in active region AR 11153 on 2011 February 9. With a resolution of 200 kHz and a time cadence of 80 ms, the reverse-drifting (RS) type-III bursts, intermittent sequence of type-U bursts, drifting pulsation structure (DPS), and fine structures were observed by the Yunnan Observatories Solar Radio Spectrometer (YNSRS). Combined information revealed by the multiwavelength data indicated that after the DPS was observed by YNSRS, the generation rate of type-U bursts suddenly increased to 5 times what it had been. In this event, the generation rate of type-U bursts may depend on the magnetic-reconnection rate. Our observations are consistent with previous numerical simulation results. After the first plasmoid produced (plasma instability occurred), the magnetic-reconnection rate suddenly increased by 5 to 8 times. Furthermore, after the DPS, the frequency range of the turnover frequency of type-U bursts was obviously broadened to thrice what it was before, which indicates a fluctuation amplitude of the density in the loop top. Our observations also support numerical simulations during the flare-impulsive phase. Turbulence occurs at the top of the flare loop and the plasmoids can trap nonthermal particles, causing density fluctuation at the loop top. The observations are generally consistent with the results of numerical simulations, helping us to better understand the characteristics of the whole physical process of eruption.
New Perspectives on the Exoplanet Radius Gap from a Mathematica Tool and Visualized Water Equation of State
Authors: Zeng Li , Jacobsen Stein B. , Hyung Eugenia , Levi Amit , Nava Chantanelle , Kirk James , Piaulet Caroline , Lacedelli Gaia , Sasselov Dimitar D. , Petaev Michail I. , Stewart Sarah T. , Alam Munazza K. , López-Morales Mercedes , Damasso Mario , Latham David W.
Published: December 2021

Recent astronomical observations obtained with the Kepler and TESS missions and their related ground-based follow-ups revealed an abundance of exoplanets with a size intermediate between Earth and Neptune (1 R
⊕ ≤ R ≤ 4 R
⊕). A low occurrence rate of planets has been identified at around twice the size of Earth (2 × R
⊕), known as the exoplanet radius gap or radius valley. We explore the geometry of this gap in the mass–radius diagram, with the help of a Mathematica plotting tool developed with the capability of manipulating exoplanet data in multidimensional parameter space, and with the help of visualized water equations of state in the temperature–density (T–ρ) graph and the entropy–pressure (s–P) graph. We show that the radius valley can be explained by a compositional difference between smaller, predominantly rocky planets (<2 × R
⊕) and larger planets (>2 × R
⊕) that exhibit greater compositional diversity including cosmic ices (water, ammonia, methane, etc.) and gaseous envelopes. In particular, among the larger planets (>2 × R
⊕), when viewed from the perspective of planet equilibrium temperature (T
eq), the hot ones (T
eq ≳ 900 K) are consistent with ice-dominated composition without significant gaseous envelopes, while the cold ones (T
eq ≲ 900 K) have more diverse compositions, including various amounts of gaseous envelopes.
Multifrequency Study of Periodic Nulling and Subpulse Drifting in Pulsar J2048−1616
Authors: Wang Z. , Wen Z. G. , Yuan J. P. , Wang N. , Chen J. L. , Yan W. M. , Yuen R. , Duan X. F. , Xiang B. B. , He D. L.
Published: December 2021

We have carried out a detailed study of single-pulse emission from the pulsar J2048−1616 (B2045−16), observed at 732, 1369, and 3100 MHz frequencies using the Parkes 64 m radio telescope. The pulsar possesses three well-resolved emission components, with the central component resembling core emission. The single pulses show the presence of two distinct periodic modulations using fluctuation spectral analysis. About 12% nulls are found to create alternating bunches of nulls and bursts in a quasiperiodic manner with longer periodicities of 83, 28, and 14 rotational periods for simultaneous observations at 732 and 3100 MHz. At 1369 MHz, the quasiperiodic nulling is detected, as well, to modulate across the entire profile both in the core and conal components simultaneously with a fluctuation rate of about 50 rotational periods, and the nulling fraction is estimated to be around 10%. Additionally, the quasiperiodic modulations are significantly dependent on time. In addition to nulling, the pulsar also presents subpulse drifting in the single-pulse sequences with shorter periodicity. The subpulse drifting is presented in the conal components and is absent in the central core emission. The leading component is modulated in longitude with a period of three pulses. The trailing component remains phase stationary within the pulse window but periodically modulates in amplitude with a period of three pulses. Finally, possible physical mechanisms are discussed.
An Integration of Health Monitoring System in Public Transport Using the Semantic Web of Things
Authors: Hadjadj Abdelhalim , Halimi Khaled
Published: December 2021

The integration of the Internet of Things (IoT) technology and artificial intelligence has become essential in many aspects of daily life since the expansion of the communications and information field. Healthcare is one area that urgently needs to benefit from these technologies to keep up with the dramatic evolution of communications for contemporary human life. IoT, through wearable devices, provides real-time data related to the measurement of a person’s vital signs of health. However, for this data to become more relevant and valuable, it needs to be linked to other domains. Public transport is a domain related to the daily activity of people who take advantage of the IoT to provide exemplary transport services whose quality of service can greatly affect people’s health. The integration of these two domains offers many benefits, especially when providing services adapted to passengers’ health status, making them safer and healthier. This paper proposes an approach based on an IoT architecture using Semantic Web technologies; it aims to integrate health monitoring in public transport, provide passengers with quality transport services, and ensure continuous health monitoring. The use of Semantic Web technologies overcomes the lack of interoperability due to the heterogeneity of data collected by different devices and generated by two different domains. An experimental study was conducted, and the proposed approach’s results were compared with those obtained by the evaluation of a physician. The results show that the approach is effective and should allow passengers to benefit from appropriate transport services that better match their health status.
Big Data between Quality and Security: Dynamic Access Control for Collaborative Platforms
Authors: Talha Mohamed , Abou El Kalam Anas
Published: December 2021

Big Data often refers to a set of technologies dedicated to deal with large volumes of data. Data Quality and Data Security are two essential aspects for any Big Data project. While Data Quality Management Systems are about putting in place a set of processes to assess and improve certain characteristics of data such as Accuracy, Consistency, Completeness, Timeliness, etc., Security Systems are designed to protect the Confidentiality, Integrity and Availability of data. In a Big Data environment, data quality processes can be blocked by data security mechanisms. Indeed, data is often collected from external sources that could impose their own security policies. In many research works, it has been recognized that merging and integrating access control policies are real challenges for Big Data projects. To address this issue, we suggest in this paper a framework to secure data collection in collaborative platforms. Our framework extends and combines two existing frameworks namely: PolyOrBAC and SLA- Framework. PolyOrBAC is a framework intended for the protection of collaborative environments. SLA-Framework, for its part, is an implementation of the WS-Agreement Specification, the standard for managing bilaterally negotiable SLAs (Service Level Agreements) in distributed systems; its integration into PolyOrBAC will automate the implementation and application of security rules. The resulting framework will then be incorporated into a data quality assessment system to create a secure and dynamic collaborative activity in the Big Data context.
Les fonctions maternelles dans l’accueil familial, regard clinique des visites médiatisées
Authors: Martins-Lima Sophie
Published: December 2021

L’article présente la concordance et les accordages entre le travail processuel du psychologue en visite médiatisée et les fonctions maternelles assurées par l’assistant(e) familial(e) auprès de l’enfant accueilli. Dans une approche inter et transdisciplinaire garantie par un métacadre institutionnel sécurisant, le psychologue clinicien se trouve à l’articulation de ces instances complémentaires. Les enfants amenés à rencontrer leur(s) parent(s) en visite médiatisée se sont développés dans une famille aux liens pathologiques. Le clinicien vient assurer une fonction de moi-auxiliaire pour l’enfant, favorisant l’émergence d’une autonomisation psychique possible quant à sa relation avec ses parents. Au sein de l’accueil familial, l’enfant exprimera les modalités relationnelles qui sont siennes, trouvera chez l’assistant(e) familial(e) une nouvelle figure parentale d’identification et d’attachement. La situation de Clémence illustre les effets subjectivants de chacun des cadres d’intervention et par-delà le travail inter et transdisciplinaire mené.
De quoi l’esthétisation est-elle le nom ?
Authors: Alloa Emmanuel , Haffter Christoph
Published: December 2021

Derrière un seul et même mot – l’« esthétisation » – se cachent des constats que tout ou presque sépare. Peu étonnant que les différents débats autour de cette notion, en France, en Allemagne ou aux États-Unis, aient souvent engendré des incompréhensions mutuelles. Avant même de savoir si l’esthétisation du monde est un phénomène désirable ou condamnable, il faut éclairer les arrière-plans conceptuels qui orientent ce diagnostic, et qui lui confèrent un sens parfois diamétralement opposé. En ouverture du dossier, l’article entreprend de faire la généalogie de ces débats, avec trois moments-clés – le moment 1800, l’entre-deux-guerres (1919-1939), et enfin les années post -68 (1970-1990). Il propose ensuite une typologie pour s’orienter dans ces débats et comparer les quatre versions de ce qu’« esthétisation » peut vouloir dire.
La vie comme œuvre d’art ?
Authors: Mees Martin
Published: December 2021

Cet article revient sur une notion à la fois féconde et polémique des derniers travaux de Foucault : l’esthétique de l’existence, ou la possibilité d’élaborer sa vie comme une œuvre d’art. À rebours de plusieurs critiques et malentendus, il s’agit de saisir le sens et les enjeux de cette idée en faisant pleinement droit à sa dimension esthétique . À travers l’analyse de la conférence sur La Culture de soi , l’article commence par montrer la spécificité de l’esthétique de l’existence au sein des larges réflexions de Foucault sur les problématisations du sujet. En confrontant ensuite différents textes du philosophe entre eux, on en vient à dégager une double série de propositions qui mettent en lumière la profonde actualité de l’esthétique de l’existence et son potentiel subversif.
L’art documentaire dans la sphère germanophone : esthétiser la politique hier et aujourd’hui
Authors: Wind Priscilla
Published: December 2021

La dialectique entre art et engagement interroge la possibilité et les moyens d’esthétisation des sujets politiques et sociaux. En Allemagne, un genre artistique explore particulièrement cette problématique : le théâtre documentaire dont les formes contemporaines montrent la nette évolution des médias de masse et de leur rôle dans notre société. Cette approche documentaire soulève plusieurs questionnements quant à la véracité des faits et théories exposés, aux limites floues entre fiction et réalité, mais aussi quant à la pseudo-objectivité des propos diffusés. Par ailleurs, l’intrication de l’emploi esthétique de médias divers et d’une volonté de popularisation de discours politiques rapproche de facto l’art documentaire d’un art de la propagande non-officielle et interroge sur les motivations des dramaturges impliqués, entre détournement distancié et manipulation du public. Les expressions contemporaines héritées du théâtre documentaire se retrouvent dans des cadres dépassant la scène, prenant plutôt la forme de « projets » multi-supports et plurimédiaux présentés par des collectifs artistiques tels Zentrum für politische Schönheit (Centre pour la beauté politique) ou The International Institute for Political Murder de Milo Rau. Ceux-ci interrogent les utilisations contemporaines des médias dans une société du spectacle poussée à l’extrême et jouent du concept de fake news pour continuer d’interpeller leur public sur des problématiques politiques et citoyennes dans un contexte d’une nouvelle remontée des fascismes. Dans ce contexte, jusqu’où peut mener une telle spectacularisation du politique ?
La forme serpentine, « image du mouvement », au tournant du XX e siècle en France : héritage polymorphe et pérennité paradoxale dans l’esthétique scientifique et métaphysique
Authors: Gueden Marie
Published: December 2021

Traditionnellement associée en histoire de l’art et esthétique à l’expression du mouvement, la forme serpentine connaît dans la deuxième moitié du xix e  siècle jusqu’au tournant du siècle une vive actualité dans le champ esthétique général, et, en particulier, l’esthétique académique, où elle est qualifiée d’« image du mouvement ». Cette postérité vive est toutefois polymorphe, mais aussi paradoxale : convoquée tant par l’esthétique scientifique que métaphysique qui s’opposent alors comme esthétique d’en bas et d’en haut, la forme serpentine y relève de différents concepts et traditions, et se trouve renouvelée, départageant respectivement une conception du côté du cinéma naissant et de l’image en mouvement, et, de l’autre côté, ses antipodes aux sources du bergsonisme.
À la recherche des héros bibliques
Authors: Vialle Catherine
Published: December 2021

L’article commence par une brève recherche de type lexical sur les mots hébreux et grecs que les traductions en langue française traduisent par « héros ». Il envisage ensuite la présence de héros de type mythologiques ou légendaires. Enfin, il se centre sur les héros humains compris comme incarnant dans un certain système de valeurs un idéal de force d’âme et d’élévation morale. À l’issue de l’enquête, il s’avère que les héros mis en avant dans la Bible sont bien différents des héros du monde grec et romain. En règle générale, on constate que le héros biblique tend à s’effacer devant l’action divine. Plus qu’un guerrier, c’est une personne qui met Dieu, sa Parole et sa Loi au centre de sa vie et de son agir. Ces héros bibliques préfigurent les héros que seront les apôtres et les martyrs du Nouveau Testament ainsi que des premiers temps du christianisme.
Entretien avec le général Gallet sur le courage et l’engagement
Authors: Gallet Jean-Claude , Thomasset Alain
Published: December 2021

Dans cet entretien, le général Gallet qui, comme commandant de la brigade des pompiers de Paris, fut l’un des acteurs de l’opération de sauvetage de la cathédrale Notre-Dame de Paris, parle du courage et de l’engagement, non seulement des soldats du feu ou des militaires en situations extrêmes qui risquent leur vie, mais aussi des héros invisibles du quotidien qui savent se dépasser pour le bien de tous et finalement assurent la vie sociale. Le courage apparaît comme un combat contre soi-même qui pour ne pas être dévoyé (comme pour les auteurs d’attentats-suicides) doit répondre à une finalité morale, être porté par des valeurs. La jeunesse et la société dans son ensemble ont besoin de retrouver des figures exemplaires, bienveillantes et respectables, signes d’une histoire qui donne sens. L’éducation devrait y faire droit.
La leçon du tragique chez Paul Ricœur. Pour une éthique théologique au service du souffrant
Authors: Kerdraon Anne-Solen
Published: December 2021

Le développement des techniques médicales et l’élargissement des possibles qu’elles génèrent sont à l’origine de questions éthiques nouvelles. Ces questions surgissent bien souvent en des situations vécues comme étant « tragiques » par ceux qui y sont confrontés. Alors que ce tragique apparaît pour beaucoup comme destructeur de toute possibilité d’exercice de la liberté et du discernement moral, Paul Ricœur met en lumière la fécondité des tragiques grecs pour penser le tragique de nos vies quotidiennes et déceler, au cœur même de l’épreuve, une interrogation et un appel qui ouvrent à une liberté nouvelle. Il indique ce faisant les conditions de possibilité d’une éthique théologique qui se met à l’écoute et au service de la personne en souffrance.
Lieux d’oubli
Authors: Samson Véronique
Published: December 2021

Cet article propose d’étudier les nombreux échecs de la mémoire mis en scène dans les cimetières du roman français de la seconde moitié du XIX e  siècle. En effet, ce corpus ne cesse de remettre en question, en même temps qu’il en témoigne, les pratiques commémoratives qui s’établissent à partir du tournant du siècle. Si les cimetières se mettent alors à accueillir une « religion du souvenir », où la mémoire des morts est assurée par les vivants, les romanciers les représentent le plus souvent comme des lieux d’oubli. L’ouverture du roman aux existences ordinaires s’accompagnerait ainsi dans les œuvres même d’un questionnement sur ce que celles-ci peuvent avoir de mémorable et sur le rôle du genre dans la postérité de ses personnages.
De Marengo à Solférino et Saint-Martin : une réflexion sur les ossuaires militaires du XIX e siècle
Authors: Cavicchioli Silvia
Published: December 2021

La constitution des ossuaires de guerre du xix e  siècle s’inscrit dans une relation complexe entre les corps morts et les populations locales, voisines des champs de bataille, relation perceptible à travers des pratiques singulières d’inhumation puis d’exhumation collective. À Marengo, c’est la passion mémorielle d’un pharmacien pro-bonapartiste qui a créé un mémorial à mi-chemin entre l’ossuaire en plein air, le musée-reliquaire et le lieu de culte. Les deux ossuaires de Solférino et de S. Martino s’enracinent dans des logiques politiques différentes. Ils résultent d’une occupation civile des espaces religieux du deuil et de la mémoire, et d’une contamination de langages et de modèles qui ont transformé ce contre-espace de la mort en un lieu privilégié de pédagogie patriotique, dans une Italie récemment unifiée.
Une source de L’Âme noire du prieur blanc de Saint-Pol-Roux : Spiridion de George Sand
Authors: Hamot Odile
Published: December 2021

C’est la dette de Saint-Pol-Roux à l’égard de George Sand que cette étude se propose d’examiner à travers L’Âme noire du prieur blanc , un « monodrame » peu connu que le poète-dramaturge « magnifique » fait paraître en 1893 et dans lequel s’exprime, sous les dehors d’une « naïve légende », l’hétérodoxie de ses vues religieuses. Si la pièce a parfois été rapprochée d’ Axël de Villiers de l’Isle-Adam, c’est bien plutôt à un roman de George Sand, Spiridion , qu’elle est redevable d’un grand nombre de ses thèmes. Une telle intertextualité est révélatrice, chez ces deux auteurs que rien ne semble à première vue réunir, d’une commune adhésion au mysticisme socialiste de celui dont la romancière s’affirmait le disciple passionné, Pierre Leroux. Ce feuilletage d’influences confère à la pièce de Saint-Pol-Roux une profondeur demeurée inaperçue et signe la remarquable postérité du romantisme doctrinaire.
Benjamin, les « passages » et la polyphonie photographique
Authors: Fiorentino Giovanni
Published: December 2021

Le Livre des Passages répond à l’insatisfaction de Walter Benjamin envers la forme du livre, tout en remettant en question le concept d’« œuvre » close, à savoir ses exigences d’unité, de linéarité et d’autonomie. Ce projet inachevé devient le lieu d’une expérimentation définissable en tant qu’hypertextuel, en réalisant une convergence avec son objet d’étude : la métropole en tant que plateforme expressive et communicative implique une réinvention de la méthode. Le regard du penseur allemand brise les règles de la tradition académique faisant sien l’œil du medium qui détruit la perspective naturaliste par l’extension photographique de l’œil. Les propriétés médiales de la photographie deviennent une lentille et un diaphragme pour le chercheur, une sorte de regard latéral et poreux sur la multiplicité de la métropole, ou encore une ouverture à l’enregistrement de la différence, une nouvelle façon de vivre et de repenser la réalité.
Sur les potentialités politiques du montage
Authors: Zucconi Francesco
Published: December 2021

Décrit et étudié comme une réflexion sur l’histoire du XX e  siècle, l’art de Jean-Luc Godard se configure comme un atlas géographique, nous forçant à concevoir la pratique du montage comme une juxtaposition incessante de différents lieux et événements historiques. Cet article se concentre sur une séquence des Histoire(s) du cinéma , étudiant les implications politiques d’un montage anachronique et anatopique. Suivre cette voie permet de développer une dynamique faite de rencontres et de relances entre la pensée de Walter Benjamin et l’œuvre cinématographique de Godard.
Blowup results for the fractional Schrödinger equation without gauge invariance
Authors: Shi Qihong , Peng Congming , Wang Qingxuan
Published: December 2021

This paper is concerned with the nonexistence of global solutions to the fractional Schrödinger equations with order \begin{document}$ \alpha $\end{document} and nongauge power type nonlinearity \begin{document}$ |u|^p $\end{document} for any space dimensions, where \begin{document}$ \alpha\in (0, 2] $\end{document} is assumed to be any fractional numbers. A modified test function is employed to overcome some difficulties caused by the fractional operator and to establish blowup results. Some restrictions with respect to \begin{document}$ \alpha, p $\end{document} and initial data in the previous literature are removed.
Survey on the application of deep learning in algorithmic trading
Authors: Wang Yongfeng ,   School of Computer Science and Cyber Engineering, Guangzhou University, China, Yan Guofeng
Published: December 2021

Algorithmic trading is one of the most concerned directions in financial applications. Compared with traditional trading strategies, algorithmic trading applications perform forecasting and arbitrage with higher efficiency and more stable performance. Numerous studies on algorithmic trading models using deep learning have been conducted to perform trading forecasting and analysis. In this article, we firstly summarize several deep learning methods that have shown good performance in algorithmic trading applications, and briefly introduce some applications of deep learning in algorithmic trading. We then try to provide the latest snapshot application for algorithmic trading based on deep learning technology, and show the different implementations of the developed algorithmic trading model. Finally, some possible research issues are suggested in the future. The prime objectives of this paper are to provide a comprehensive research progress of deep learning applications in algorithmic trading, and benefit for subsequent research of computer program trading systems.
Pre-sale ordering strategy based on the new retail context considering bounded consumer rationality
Authors: Liu Yu , Guo Chun-xiang , Zhou Hong , Chen Xin-yi
Published: December 2021

The purpose of this paper is to study the impact of bounded consumer rationality on the order quantity and profitability of the seller in the advance period and the spot period in the context of the combination of new retail and pre-sale. In this paper, we develop a seller order model in the context of the combination of new retail and pre-sale, with and without reference price dependence. Besides, the model considers the order cancellation and delayed purchase behavior of consumers. We then discuss the optimal profit and optimal order quantity under different conditions and the effect of different reference price dependence and value-added offline service on them. Our research shows that: First, the seller tends to set the deposit too low in pre-sales. Second, reference price dependence has different effects on order quantities in different periods. The seller should pay more attention to the impact of reference price dependence. Third, on the whole, consumer rationality benefits the seller. The seller, or the public policymaker, can benefit new retail businesses by increasing consumer rationality. Last, in the new retail context, an increase in offline service value-added, even if it increases total order quantity, is not always beneficial to the seller and may reduce profits. Therefore, the seller should weigh all factors to determine the optimal value-added offline services.
On convergence properties of the modified trust region method under Hölderian error bound condition
Authors: Ma Jirui , Fan Jinyan
Published: December 2021

Trust region method is one of the important methods for nonlinear equations. In this paper, we show that the modified trust region method converges globally under the Hölderian continuity of the Jacobian. The convergence order of the method is also given under the Hölderian error bound condition.
The Writer’s Action Group (WAG) and the Fight for Public Lending Right (PLR)
Authors: Darlington Joseph
Published: December 2021

In 1972, the experimental writers Brigid Brophy and Maureen Duffy came together with three friends to found the Writer’s Action Group (WAG). The group aimed to improve the financial lot of British writers, being inspired by an article in the Bookseller stating that the average author earned less in 1971 than they had done in 1966 even before taking into account the rapid inflation of the new decade. Within a year, they had published 17 articles arguing for writers to unionise and fight for Public Lending Right (PLR), a small royalty fee to be paid every time a writer’s book was borrowed from a public library. Other writers flocked to join WAG including B.S. Johnson, Giles Gordon, Eva Figes, Ted Hughes, Anthony Burgess, Doris Lessing and Raymond Williams. The fight for Public Lending Right was won in 1974 when the Public Lending Right Act was voted through the Commons. It is a story of high passions, entrenched beliefs and internecine conflicts. In particular, the group’s struggle with the Society of Authors involved a dramatic escalation from initial cordiality, through each side trashing the other in the press, to a final, dramatic showdown during the Society’s 1973 AGM. The conflict represented a core contention at the heart of post-war British writing: are writers to be seen as workers or as aesthetes? Using materials sourced from a wide range of archives alongside interviews with participants, this paper charts the rise of WAG from a personal passion project through to a radical movement and finally into a mature campaigning body.
The Limits of Looking: Conceptualising the Frame in Ann Quin’s Berg and Christine Brooke-Rose’s Out
Authors: White Hilary
Published: December 2021

This article will consider the motif of the frame — conceived of as a device which isolates and presents that which falls within its bounds — in two experimental British post-war novels (Christine Brooke-Rose’s Out and Ann Quin’s Berg, both published in 1964) as a means of drawing parallels between experimental literature and conceptual art in Britain during the 1960s. I argue that Brooke-Rose and Quin develop a heightened interest in visuality in the 60s, which, in the early works examined here manifests as a thematization of vision, and in later works provokes more overt visual experiments with typography and illustration. These novelistic experiments with visual technique take place within a wider context of increasing interdisciplinarity within art forms over the course of the 60s and 70s, which a cross-investigation of visual arts and literary experimentation helps to reveal. Quin’s Berg and Brooke-Rose’s Out form a complementary pair in terms of thinking through issues of presentation and representation. Berg — with its egocentric protagonist and the window frame through which he views the outside world — calls up associations with single-point perspective, the development of this perspectival technique in the history of painting (especially the fact that the technique was historically reserved for ‘important’ figures like kings). Out’s fractured, multi-perspectival narrative, on the other hand, resonates with cubist art and contemporary developments in cinematic editing (the techniques of the French New Wave), presenting a ‘natural’ frame formed by the overlapping branches of trees, underlining the text’s interest in visual patterning and complexity. Using Phillip King’s Window Piece (1961) as my main example from the visual arts, I discuss the reconceptualization of the frame by the experimental writers and artists of the period, looking forward slightly to Jacques Derrida’s conception of the frame in The Truth in Painting (1978), which signals a loss of faith in intellectual and disciplinary mastery. Derrida’s writing ‘around’ Art — with connotations of both enclosure and obliqueness — and his purposefully perforated frame which does not seem designed to contain anything, are akin to Quin’s and Brooke-Rose’s novels, whose frame motifs — rather than containing the images they are presenting — serve to problematise the idea of strict boundaries, borders, and in a more abstract sense, of remaining within presupposed categories of definition in general. As such, the novels end up enacting a sort of theory of their own, a theory of limits with bearing on both aesthetic and social contexts within their narratives.
Mineral Content of Forages in Coconut Triangle, Wet Zone and Dry Zone Dairy Production Regions, During South-West Monsoon in Sri Lanka
Authors: Pamalka K. D. C. , Munasinghe M. A. L. S. S. , Weerasinghe W. M. P. B. , Weerathilake W. A. D. V.
Published: December 2021

The present study was conducted to evaluate the mineral status of forages in three different dairy production zones, Coconut Triangle, Wet Zone, and Dry Zone. Forage samples were collected from Kotadeniyawa, Udugoda and Seeppukulama representing the three locations, respectively. The samples were analysed using atomic absorption spectrophotometer to determine macro and micro minerals. Levels of Ca, K, Mg and Na in forages were ranged, 0.57-19.9 gram per kilogram dry matter (gkg-1 DM), 8.03-11.47 gkg-1 DM, 0.65-0.90 gkg-1 DM and 0.01-0.60 gkg-1 DM respectively. The micro mineral content of tested samples was ranged 21.5-478 mg Fe kg-1 DM, 18.7-285 mg Mn kg-1 DM, 2.82-103 mg Cu kg-1 DM M, 0.03-0.40 mg Co kg-1 DM, 0.09-0.25 mg Se kg-1 DM, 15.8-298 mg Zn kg-1 DM and 0.42-2.64 mg Cr kg-1 DM. The results revealed that legumes contain higher levels of Ca, Mg, Fe, Mn and Cu than grasses, while grasses are rich in Zn. The tested mineral contents of forages from three different zones were significantly different (p<0.05) except Se. Level of Se in forage varieties showed no significant difference (p>0.05) among three zones for most tested varieties except in Koronivia grass (Brachiaria humidicola) and Peuro (Pueraria phaseoloides).
Design, Development and Performance Evaluation of a Seed Paddy Cleaning Machine
Authors: Kahandage P. D. , Weerasooriya G. V. T. V. , Ranasinghe V. P. , Kosgollegedara E. J. , Piyathissa S. D. S.
Published: December 2021

Rice (Oryza sativa L.) is the staple food crop in Sri Lanka occupying 34% of the total cultivated area. Seed paddy production is one of the major economic activities in the paddy sector, which is fully mechanized only at the large-scale level. Unavailability of an affordable mechanical solution is a big barrier for entering small and medium scale producers in to the seed paddy industry. Therefore, the aim of this study was to introduce an efficient and affordable electrical motor driven small or medium scale paddy cleaning machine for seed paddy production. The main components of the machine are paddy sieving unit, blowing unit and stone separator. According to the variety of paddy, the sieve size of the sieving unit can be changed. The performance of the machine was evaluated using paddy samples with purposely added light and heavy impurities such as straw particles and different sized stones. The suitable speeds for the better operation of sieve, separator and blower were 90, 200 and 960 rpm, respectively. The separation percentages of the large, light, and same size impurities were 96%, 74%, and 86%, respectively. The effective capacity of the machine was 252 kgh-1 with 79% mechanical efficiency. Based on the overall satisfactory performance, the newly built paddy cleaning machine can be recommended to small and medium scale paddy farmers in Sri Lanka. The machine can be further developed with a magnetic separator for removing iron particles.
Fuelling the Start-ups: Nexus of Crowdfunding Awareness, Perceived Parental Influence, and Internet Familiarity on Start-up Intention
Authors: Tennakoon W. D. N. S. M. , Siriwardhana S. A. M. T. P.
Published: December 2021

The lack of initial capital has long been reported as a prominent barrier for entrepreneurial start-ups. Contrary to this, crowdfunding is treated as a “magic hand” for solving the numerous financial demands of netizens. Yet, knowledge on crowdfunding has not been tested for its capacity to affect start-up intentions. Based on the Theory of Planned Behaviour (TPB), the present study aimed at assessing the impact of Awareness of Crowdfunding (ACF), the Perceived Parental Influence (PPI), and the Internet Familiarity (IF) on Start-up Intention (SI). The quantitative inquiry, in the deductive paradigm, deployed a field survey to test the hypotheses. A sample of interns was randomly drawn based on the management faculty of a state university of Sri Lanka (N = 236). A self-administrative questionnaire served as the data collecting tool while a five-point Likert scale ranked the responses. Results of structural equation modelling confirmed the claims. Awareness of crowdfunding and perceived parental influence significantly predicted the start-up intention of interns. Theoretically, findings imply the potentiality of modelling awareness of crowdfunding as a predictor of start-up intention while these confirmed the predictive role of perceived paternal influence towards start-up intention empirically. The results call for implementing sound awareness programmes on crowdfunding for potential and early-career entrepreneurs.
Gender Equality in Education in Sri Lanka
Authors: Withanage D. P. , Chandrakumara D. P. S.
Published: December 2021

Gender equality in education is an issue of global concern since it equalizes the formation of human capital and labour productivity between males and females. Hence, a gender equality analysis on education is essential to understand the situation and necessary policy interventions. This paper aims to investigate how equally education and training are distributed between males and females in Sri Lanka. The study is mainly based on institutional data obtained from the Department of Education, University Grants Commission, and the Department of Census and Statistics. Descriptive statistics were used in the analysis of quantitative data. Results show that the country has achieved gender equality education in many aspects. However, it reveals that student enrolments in grade one in National in schools, engineering and technology study programmes in universities, vocational and non-formal training courses under technical, vocational, and non-formal education are male-biased. The enrolments in bio-science centred streams in universities, by contrast, are female-biased. The findings highlighted the need for policy intervention in minimizing gender inequality in Grade one admissions in National schools, enrolments in engineering, technology, and bio-science centred study programs, and vocational and non-formal training courses.
Nature of Time Poverty in Sri Lanka
Authors: Ranatunga R. M. C. L. K. , Dunusinghe P. M.
Published: December 2021

Poverty as a concept encompasses multiple dimensions, yet, for decades, has been measured based on tangible wealth or the level of income. It brings into question the effectiveness of using only an income-based indicator to measure such a complex phenomenon. This paper attempts to analyse poverty through a novel lens known as time poverty. Conceptually, time poverty is defined as the lack of time for leisure due to time spent on employment and domestic activities.  This is directly linked to welfare as it affects the health and productivity of individuals. Employing the first Time-Use Survey conducted in Sri Lanka in 2017, this study aims to measure time poverty based on the time allocated for labour and non-labour market activities. Based on the findings, insights relating to the gendered nature of time poverty, socio-demographic patterns and occupational influences can be inferred. The incidence of time poverty was approximately 40 per cent, with a significant portion of the employed men and women in the urban area being subject to time poverty. At the higher threshold of time poverty, women were more time-poor than their male counterparts across urban, rural and estate sectors. When considering both sex and sector, women in the urban sample were the most time-poor. Thus, a gendered pattern can be identified through these results, necessitating policy attention.
Abhijit Banerjee and Esther Duflo: Good Economics for Hard Times
Authors: Prasanna R. P. I. R.
Published: December 2021

No abstract available
Baboon syndrome (SDRIFE) after Valsartan/Hydrochlorothiazide intake for several years
Authors: Tchernev Georgi , Oliveira Nikhil , Kandathil Lorraine Joseph
Published: December 2021

NA
Experimental analysis on concrete blocks reinforced with Arundo donax fibers
Authors: Manniello Canio , Cillis Giuseppe , Statuto Dina , Di Pasquale Andrea , Picuno Pietro
Published: December 2021

Over the last decades, there has been a growing attention in research and development on non-conventional building materials, such as vegetable fibers (e.g., flax; hemp; jute; etc.), to be used as eco-friendly materials in a wide range of applications in civil construction. The main reasons of this interest are related to the specific properties, price and sustainability of natural fibers, which can be considered as “green” building materials. In this article, the tensile strength of a new type of fibers extracted from stem of the Giant Reed Arundo donax L., has been investigated. These fibers, which widely grow in Mediterranean areas, but that are diffused all around the world as well, have been extracted from the outer part of the plant stem. Then, in order to have an initial idea of their influence on the mechanical properties of concrete, some experimental  bricks have been prepared, with the addition of different weight percentages of this vegetal fiber. To assess the mechanical properties of these bricks,  compression and tensile tests on the whole block has been performed. Hence, the differences between concrete bricks without any fiber and those reinforced with different weight percentages of natural fiber have been analyzed, then assessing their potential applications in bio-architecture.
Customized and Cost-Effective 3D Printed Mold for Cranioplasty
Authors: Gopal Swaroop , Rudrappa Satish , Sekar Arunkumar , Preethish-Kumar Veeramani , Masapu Dheeraj
Published: December 2021

Context:

Autologous bone is the most commonly used flap in cranioplasty to repair the defect; however, synthetic materials are available. Poly methyl methacrylate (PMMA) is an effective polymer owing to its thermoplastic and radiolucent properties comparable to bone strength. Three-dimensional (3D) printing combined with computer-assisted design (CAD) is a simple, low-cost method to print molds that ensure surgical success.

Materials and Methods:

A total of 114 patients underwent cranioplasty (July 2015–April 2018), and 25 of them using 3D printed template molds due to unavailability of autologous bone. The clinical features, patient demographics, and surgical parameters were analyzed. The visual analog score for cosmesis (VASC) and Odom's score was obtained pre and post-op.

Results:

The mean age of the patients is 38.4 ± 14.6 years (Range, 9–66). The primary pathology for undergoing craniectomy is stroke (n = 13; 52%), traumatic brain injury (10; 40%) and tumor (2; 8%). The reason for nonavailability of flap was infection (n = 14;56%), flap resorption (4;16%), and trauma or tumor (7;28%). The mean time for manufacturing the 3D printed template is 13.2 ± 2.1 h. On follow-up, median Odom's score is excellent in 52% of cases, good in 40%, and fair in 8%. The mean VASC score on follow up is 8.2 ± 1.3. Three patients developed minor postoperative complications.

Conclusion:

This is the first study from a single tertiary care center in India to systematically evaluate the outcomes in 3D cranioplasty using CAD and 3D printing technology. This method would be optimal especially in developing countries since PMMA is cost effective and also gives an ideal cosmetic effect.