bluuebunny/crossref_metadata_2025 huggingface dataset:
UPPER BOUND FOR THE COMPETITIVE FACILITY LOCATION PROBLEM WITH DEMAND UNCERTAINTY
Authors: Beresnev V. , Melnikov A.
Published: April 2024

We consider a competitive facility location problem with two competing parties operating in a situation of uncertain demand scenario. The problem to find the best solutions for the parties is formulated as a discrete bi-level mathematical programming problem. In the paper, we suggest a procedure to compute an upper bound for the objective function on subsets. The procedure could be employed in implicit enumeration schemes capable to compute an optimal solution for the problem under study. Within the procedure, additional constraints iteratively augment the high-point relaxation of the initial bi-level problem, what strengthens the relaxation and improves the upper bound’s quality. New procedure to generate such cuts allows to construct the strongest cuts without enumerating the parameters encoding them.
МОДЕЛЮВАННЯ ДІЯЛЬНОСТІ МІКРОПІДПРИЄМСТВА
Authors: ПРОСКУРОВИЧ Оксана , ЧАЙКОВСЬКА Інна , ГОРБАТЮК Катерина
Published: April 2024

В науковій статі досліджено процес оцінювання результату моделювання діяльності мікропідприємства засобами економетричного моделювання. Наведено основні підходи до процесу моделювання результатів діяльності суб’єкта підприємництва за динамічних умов розвитку економіки. Побудовано економетричні моделі зміни чистого доходу від надання послуг мікропідприємства та здійснено його подальше прогнозування. Визначено значний вплив вартості засобів виробництва та чисельності працівників на зміну результату діяльності мікропідприємства. Прогнозування чистого доходу здійснено на основі існуючих на мікропідприємстві тенденцій та за використання експертного методу щодо зростання вартості засобів та предметів праці та незмінності чисельності персоналу. Обидва варіанти дали позитивне зростання чистого доходу від наданих послуг. Залежно від динамічності ринкового середовища можна рекомендувати ці моделі до впровадження у практику господарювання мікропідприємства.
ОСОБЛИВОСТІ ВИКОРИСТАННЯ ПРАКТИЧНОГО HR-МЕНЕДЖМЕНТУ В КРИЗОВИХ УМОВАХ ВОЄННОГО СТАНУ ТА ПОВОЄННОГО РОЗВИТКУ
Authors: ТЮРІНА Ніла , НАЗАРЧУК Тетяна , ГУРНИЦЬКИЙ Олексій
Published: April 2024

У статті проаналізовано стан вітчизняного ринку праці за результатами, оприлюдненими на Форумі Human Capital UA. Розглянуто прогнозні дані щодо розвитку людського потенціалу за демографічними показниками. Визначено пріоритетні напрями збереження та розвитку людського потенціалу. Акцентовано увагу на трансформацію змістовного  наповнення  функцій HR-менеджменту  під час війни. Сформовано першочергові задачі HR-служб,  виокремлено важливість психологічної роботи з персоналом компаній за сучасних  умов. Проаналізовано, задекларовані на саміті HR Wisdom Summit-2023,  сучасні HR-стратегії та розглянуто можливості їх адаптації на підприємствах. Здійснено огляд окремих аспектів позитивного управління персоналом українськими компаніями в кризових умовах  з використанням сучасних технологій. Охарактеризовано структуру сучасних діджитал-сервісів практикуючих компаній.  Розглянуто можливість впровадження концепту Zero-HR та ефективного  онбордингу в систему управління персоналом підприємств та організацій. Запропоновано нові підходи до мотивації працівників та  відновлення їх ментального здоров’я, подолання стресу  із застосуванням методики  Basic PH.
Governance Network dalam Optimalisasi Transportasi Mamminasata di Provinsi Sulawesi Selatan
Authors: N. Yuli Rahayu H. , Haning Moch. Thahir , Yunus Muhammad
Published: April 2024

Mamminasata merupakan program dalam pengelolaan transportasi di sulawesi selatan yang terdiri dari jaringan tata kelola pemangku kepentingan. Penelitian ini bertujuan untuk menganalisis governance network dalam optimalisasi pengelolaan transportasi bus Mamminasata di Provinsi Sulawesi Selatan. Penelitian ini menggunakan metode penelitian kualitatif dengan penelitian deskriptif. Teknik pengumpulan data dilakukan dengan wawancara mendalam, observasi dan studi dokumentasi. Adapun data dianalisis menggunakan model analisis oleh (Miles & Huberman, 1994) dengan teknik reduksi data, penyajian data, dan penarikan kesimpulan. Hasil penelitian menunjukkan bahwa governance network dalam optimalisasi pengelolaan transportasi bus Mamminasata di Provinsi Sulawesi Selatan dengan menggunakan pendekatan governance network (Klijn & Kopenjan, 2016) yakni (1) Kontak, hal tersebut dapat dilihat dari interaksi pada saat rapat koordinasi melalui koordinasi internal pada masing-masing pemangku kepentingan dan kontibusi yang diberikan. (2) Kepercayaan, hal tersebut dapat dilihat dari rasa kepercayaaan pada penerapan standar pelayanan yang sudah ditetapkan namun masih belum efektif karena masih terdapat pemangku kepentingan yang tidak menjalankan standar pelayanan sesuai prosedur yang telah disepakati.
Viburnum: an overview in relation to risks of allergy
Authors: Marinangeli Francesca , Pace Loretta Giuseppina
Published: April 2024

The genus _Viburnum_ comprehends more than 230 species of high ecological value. Some species have been considered for contact sensitivity and the pollen allergenicity. The literature shows that some species can give contact hypersensitivity and _V. opulus_ can determine pollen allergy
Delta Radiomics — Potential Role in Head Neck Cancer
Authors: Mali Shrikant
Published: April 2024

INTRODUCTION: Delta radiomics is a tool used to assess the response of oncologic patients undergoing immunotherapy. It extracts high-dimensional quantitative features from medical images, providing information about cancer's phenotype, genotype, and tumoral microenvironment. This analysis could help avoid invasive procedures and help choose the most suitable therapeutic in multiple therapeutic options.

METHOD: Radiomics has gained interest as an imaging biomarker for predicting response to various immunotherapies. Delta radiomics assesses feature variations from one time point to another based on subsequent images, offering higher value for treatment-outcome prediction or patient stratification into risk categories.

CONCLUSION: It has potential benefits for clinical endpoints in oncology, such as differential diagnosis, prognosis, treatment response prediction, and evaluation of side effects. Further research with prospective and multicentre studies is needed for clinical validation of delta radiomics approaches.

STATEMENT OF CLINICAL SIGNIFICANCE: In head and neck oncology, delta radiomics can be used to enhance the precision of diagnosis, assess tumor response, forecast normal tissue toxicity, predict clinical outcome, and pinpoint characteristics for treatment modification. Patients' quality of life may be enhanced by it. It can support post-treatment surveillance. Additionally, it can support the delivery of individualized care based on a patient's reaction to medication and radiation.
A New Index for Measuring the Difference Between Two Probability Distributions
Authors: Huang Hening
Published: April 2024

This technical note proposes a new index for measuring the difference between two probability distributions, named distribution discrepancy index (DDI). The proposed distribution discrepancy index is derived based on the concepts of informity, cross-informity, and informity divergence in the recently proposed informity theory. It is defined as the ratio between the informity divergence of two probability distributions and the sum of the two informities. The proposed distribution discrepancy index ranges between 0 and 1, which makes its interpretation intuitive, simple, and meaningful. A low DDI value (e.g. close to 0) indicates that the difference between the two probability distributions is small. A high DDI value (e.g. close to 1) indicates that the difference is large. Two examples are presented to demonstrate the application of the proposed distribution discrepancy index.
Ramipril-Induced Angioedema in a Patient With Basal Ganglia Bleed: A Case Report
Authors: Vikram Aditya , Bajaj Jitin
Published: April 2024

This report presents a case of ramipril-induced angioedema in a patient who had undergone surgery for basal ganglia bleed, a complication of uncontrolled hypertension that typically requires long-term antihypertensive treatment. The patient was receiving ramipril, a common hypertension medication, but developed the life-threatening side effect of angioedema. The case highlights the potential risks associated with using ramipril.
Debt taxes during crises, a blessing in disguise?
Authors: Parra-Polania Julian A. , Vargas Carmiña O.
Published: April 2024

Models with an occasionally binding credit constraint have been used to analyze financial crises and previous literature has highlighted that the specific form of this constraint is decisive for policymaking conclusions. What are the welfare effects of implementing a policy that is appropriate for a specific type of constraint when the economy is actually facing a different one? We provide an answer by analyzing the implementation either of ex ante (or macroprudential) vs. ex post debt taxes in four possible collateral constraint cases (depending on whether creditors assess current or future and total or disposable income of debtors). Our main conclusion is that a debt tax applied only during potentially constrained periods (i.e., ex post) is a more favorable intervention if the policymaker does not know which credit constraint is facing or if it is more likely to be facing a disposable-income constraint (either for current or future income).
Strategi Public Relations Dalam Membangun Brand Awareness Pada PT. Finfolk Media Nusantara
Authors: Feryanda Jonathan Octa , Wijaya Lina Sinatra
Published: April 2024

People today have begun to switch from conventional media to online media in obtaining information. Because of this transition, many media have emerged and are only engaged in the online field using social media platforms such as Instagram, TikTok, and Youtube. One of these media is PT Finfolk Media Nusantara. In the midst of intense competition between these media, of course, the media needs brand awareness from the public in order to become a trusted media. This research aims to find out the communication strategy owned by PT Finfolk Media Nusantara in building public brand awareness of the company. This research is included in the type of descriptive qualitative research. The data collection techniques used are interviews, observation and documentation. The results showed that PT. Finfolk Media Nusantara planned first before carrying out its communication strategy which was carried out in several stages. In addition, the level of brand awareness of PT. Finfolk Media Nusantara is at the brand recognition level because most have known the company through the content created where the content includes the PT. Finfolk Media Nusantara logo.
ОСОБЛИВОСТІ ПРОЄКТУВАННЯ МЕХАНІЗАЦІЇ КРИЛА ЛІТАКІВ ТРАНСПОРТНОЇ КАТЕГОРІЇ
Authors: Гребеніков О. Г. , Василевський В. Є.
Published: April 2024

The paper analyses the methods of designing wing mechanisation for transport category aircraft. The wing layout with the placement of wing mechanisation means on the leading and trailing edges of the wing is analysed. Specific requirements for wing mechanisation units are considered. The analysis takes into account the requirements of aircraft operation, which provide easy access to inspect the mechanisation units and their attachment mechanisms. The need for constant monitoring of the synchronous operation of all mechanisation sections and ensuring their smooth movement is emphasised. The design of any type of mechanisation means involves the simultaneous solution of a number of development tasks: kinematic scheme, installation and control system, support structure and the device itself. In most cases, the drive mechanisms are also developed. The design of a new aircraft is a multi-stage iterative process that includes external design, development of a technical proposal, preliminary design, detailed design, production of prototypes, ground and flight tests, which determine the actual characteristics of the aircraft and the degree of its compliance with the technical specifications. Consider the advantages created by wing mechanisation equipment. The mechanisation of the AN-140 is considered as a representative of aircraft whose wings have trailing edge mechanisation but no leading edge mechanisation. The mechanisation of the AN-74 is also considered as a representative of aircraft that use two- or three-slotted retractable flaps, winglets or nose shields of large curvature over the entire wing span. The design technologies in integrated computer information systems are characterised, which allow to build a single process of computer modelling and engineering analysis and to conduct multivariate studies to select optimal design solutions in a sufficiently short time.  A block diagram of the process of detailed design of flaps is proposed.
ВПЛИВ УМОВ РОБОТИ НА ТЕМПЕРАТУРНИЙ РЕЖИМ ПІДШИПНИКІВ З МЕТАЛЕВИМИ ТА КЕРАМІЧНИМИ КУЛЬКАМИ
Authors: Доценко В. М. , Ковеза Ю. В.
Published: April 2024

The results of an experimental study of the temperature mode of operation of rolling bearings under different lubrication conditions are presented. Comparative tests of all-metal bearings and similar bearings with rolling elements made of silicon nitride (hybrid bearings) when lubricated with an oil jet and an oil-air mixture in the range of rotor rotation frequencies from 0 to 35000 rpm were carried out. For the experiments, a specially created set was used, which allows you to study the temperature of the bearings and the temperature of the lubricant at the entrance and exit from the bearings. The axial load on the bearings was created with the help of a compression spring, which rested on the outer rings of the bearings. This made it possible to close the load inside the system. During the tests, the load was 0 N, 1000 N, and 2000 N. Tests were carried out for two modes of bearing lubrication: oil jet and oil-air mixture. The method of measuring the temperature of the outer ring of bearings is described. The temperature measurement error was considered as a complex of instrumental error and method error. It was assumed that the temperature error is subject to a normal distribution. The conducted analysis showed that the error of measuring the temperature of the bearing ring was ± 2.8 °C with a confidence probability of 95 %. It has been established that bearings with ceramic balls in the entire studied range behave qualitatively and quantitatively in approximately the same way as with steel ones. The temperature level of hybrid bearings is slightly higher when lubricated with both an oil jet and an oil-air mixture. There is a clear connection between the values of the bearing temperature and the moment of resistance in the bearing: the increase in temperature is observed under the same conditions under which the moment of resistance increases.
Appointment of forensic examinations in the course of investigation of criminal offences related to raiding
Authors: Tiulieniev S. A.
Published: April 2024

Establishment and development of the economic security of the state requires taking effective measures to counteract and minimise the negative impact of criminal offences that encroach on public relations in the areas of economic activity, legal activities of business entities, professional activities of public administration entities, etc. Among such criminal offences, much attention is paid to those with signs of raiding, i.e. those related to the unlawful takeover and seizure of property, assets of enterprises, institutions, organisations, corporate rights to them and other resources, encroachment on the rights of owners or authorised persons of business entities of various forms of ownership, etc. An important role in proving and clarifying the circumstances to be proved in these criminal offences is played by expert opinions. Given the insufficient elaboration of the issues related to the appointment of forensic examinations in the course of investigation of criminal offences related to raiding, the purpose of the article is to define the range of forensic examinations which are appointed during the pre-trial investigation of the latter, and to clarify the specifics of their appointment. To achieve this goal, the article uses a range of general scientific methods, as well as some philosophical and special research methods, in particular, analysis, synthesis, systemic and structural method, forecasting method and dialectical method.

Based on the results of the analysis of the investigative and judicial practice of investigating criminal offences related to raiding, it has been found that the typical expert examinations which are appointed during their investigation are forensic technical examination of a document, forensic economic examination, and forensic handwriting examination. It has been generalised that they are appointed in every second criminal proceeding of the type under study.

The author identifies the factors which should be taken into account when deciding on the necessity and expediency of appointing a forensic examination during a pre-trial investigation. The article also identifies the mistakes made by the prosecution when appointing the specified types of qualified specialised investigations. Given the nature of raiders’ actions, the processes taking place in society and in the professional activities of individual participants in social relations, the author outlines the prospects for further scientific research.
Acceptance of international criminal justice in Bosnia and Herzegovina
Authors: Šimić G.
Published: April 2024

When the XIV Winter Olympic Games took place in Sarajevo in 1984, nobody expected that war would begin only seven years later and kill hundreds of thousands of people living in the former Yugoslavia. That millions of them would be ethnically cleansed and displaced, most of them for good. That hundreds of mass graves would be scattered around, and that war crimes unseen in Europe since the Second World War would be repeated. That severe crimes like systematic rape, torture, and massive destruction of cultural heritage and property would finally culminate with genocide. Consequently, Bosnia and Herzegovina (and the countries of the former Yugoslavia) triggered an immense boost in international criminal law and international criminal justice. That experience, during and after the war that took place from 1992 to 1995, can offer lots of valuable input. Not everything that had been done was good or perfect, but it was of great importance for the further development of international criminal law and international criminal justice in a world that is still searching for appropriate responses to the grave war crimes that occur every day, and for the development of mechanisms and practices that will ensure justice for victims and society and be perceived as such. The atrocities of the Bosnian War served as a wake-up call for the international community, highlighting the urgent need for mechanisms to hold perpetrators of such heinous crimes accountable. The establishment of the International Criminal Tribunal for the former Yugoslavia marked a significant milestone in this regard, pioneering the prosecution of individuals responsible for genocide, war crimes, and crimes against humanity committed during the conflict. However, challenges persist in ensuring access to justice for all victims and addressing the root causes of conflict to prevent future atrocities. The lessons learned in Bosnia and Herzegovina remain crucial in shaping efforts to achieve lasting peace and accountability worldwide.
ПОНЯТТЯ ТА ОЗНАКИ КРИМІНАЛІСТИЧНОЇ ТАКТИКИ
Authors: ГОВОРУЩАК K.K.
Published: April 2024

У статті встановлено, що на сьогодні дискусійним є питання щодо юридичної та пізнавально-таксономічної природи криміналістичної тактики. З’ясовано, що сутність криміналістичної тактики розкривається через виокремлення властивих їй ознак. Виокремлено й охарактеризовано такі ознаки криміналістичної тактики: є самостійною частиною (розділом) науки криміналістики, що має тісні зв’язки з іншими її частинами – криміналістичною технікою та методикою; заснована й використовує в межах свого застосування надбання гуманітарних і технічних наук; більшою мірою застосовується у зв’язку з конфліктною ситуацією, має низку аспектів організаційного, регулятивного, комунікативного, пізнавального характеру; здійснюється уповноваженими кримінальним процесуальним законодавством суб’єктами; є набором науково обґрунтованих прийомів і рекомендацій, практичних дій, спрямованих на запобігання та протидію кримінальним правопорушенням; має динамічний предмет; спрямована на збирання, накопичення, опрацювання, дослідження та використання доказової у кримінальному провадженні інформації.
TACTICAL PERSONNEL MANAGEMENT IN THE SYSTEM OF ECONOMIC SECURITY OF E-COMMERCE ENTITIES
Authors:   Admiral Makarov National University of Shipbuilding, Kramarenko Iryna , Nadtochii Iryna ,   Admiral Makarov National University of Shipbuilding, Hryshyna Nataliya ,   Admiral Makarov National University of Shipbuilding
Published: April 2024

The purpose of writing the article is the formation of tactical personnel management in the system of economic security of e-commerce entities when developing a marketing strategy. An analysis of the development of e-business entities in Ukraine was carried out, which showed an increase in the dynamics of the number of active retail business entities, the number of employed and hired workers, which is carried out by mail order firms or via the Internet. It was analyzed that over the past ten years, the number of active economic entities engaged in electronic commerce has increased 4 times, from 7,486 units in 2012 to 30,804 units in 2022. The corresponding trend for this period is the number of individual entrepreneurs, in the structure of the number of active business entities, retail trade carried out by mail order firms or via the Internet in 2022 will make up 98.1%. Analysis of the number of employed workers in the field of e-commerce showed that their number increased by 3.1 times, and the number of hired workers by 1.7 times. Despite a slight reduction in the number of employed and hired workers in the field of e-commerce in 2022, a further growth trend can be predicted due to the increasing popularity and increased availability of digital economy tools. It is substantiated that when forming the marketing strategy of e-commerce entities, it is necessary to take into account the role of tactical personnel management on the basis of constant training, retraining and improvement of skills, which, in turn, will ensure the improvement of the economic security system. It is proposed to develop a program for the development of trade on the Internet, which takes into account the need for trade specialists through e-mail, TikTok, Instagram, YouTube, Facebook, and websites. It was determined that the formation of a system of performance indicators is a mandatory tool for evaluating the implementation of the program. Appropriate performance indicators should take into account the degree of risk and threats to the system of economic security of e-commerce entities with the possibility of their further minimization of the impact, which forms the direction of further research.
Calculation of One- particle redial distribution function and One- particle expectation value for K(1S) shell of He and Li atoms by Using Correlated function
Authors: حسن علياء عبد المحسن
Published: April 2024

The electronic correlation effect is the most important effectiveness in physics, which make changed in many physical result specially with that of atomic activeness. The approximation ,which study the electronic correlation is called "correlated function" .Sample of the correlated has been used in this study ,that function is the J.D. Stuart- F.A .Matson function by make change on the original formula .That function is of configuration interaction of virtual orbitals. That was for two electrons for study some of atomic propertes the one particle radial distribution function  D(r 1 ) and one particle expectation value n= r 1   for K(1 S ) shell of He and Li atoms .The results wear successful for giving the results that refer to an acceptable correlated function.
Structural and Electronic Properties of Donor-Acceptor Molecular System: B3LYP/ DFT Calculations
Authors: Ghalib Basim Abdullattif
Published: April 2024

Present work deals with the structural and electronic properties of trifluorocarbon-nitro CF3-NO as a donor-acceptor molecular system. Density functional theory at the three parameters B3LYP level of theory was employed with various basis sets to determine and calculate some structural and electronic properties for this molecular system. The calculations include the geometrical parameters of the studied structures. And some electronic properties of these were investigated include the total energy, electronic states, ionization potential, electron affinity, electro chemical hardness, softness and electrophilic index. The results showed that 6-31G (d, p) level of theory gave good agreement values of geometrical parameters with experimental data in compared with other levels.
Optical properties of CdO films prepared by DC planar magnetron sputtering
Authors: Aadim Kadhim Abdulwahid
Published: April 2024

CdO films have been produced on glass substrates by DC planar magnetron sputtering technique in Ar and O2 gases 1:4 and distance 6cm between cathode and anode and thickness 174 nm. It is observed from optical properties that the films possess transmittance 80% in visible and near infrared region of spectrum and direct band gap values in the rang 2.31-2.4 e V.
Evaluation of homeopathic treatments for the control of moniliasis (Moniliophthora roreri Samson & Benny), in cacao (Theobroma cacao L.)
Authors: CHAVEZ GARCIA ELSA , Oliva-Montejo Roberto
Published: April 2024

Objective: To evaluate low- and high-dilution homeopathic products in the incidence of Moniliophthora roreri in cacao plants. Design/Methodology/Approach: The plantation was studied using a randomized block design with three repetitions and six treatments: Homeopathic nosode 12C and 200C, Cacao homeopathic combination remedy 12C and 200C, water control, and control sample, with applications every 15 days. The studied variables were: Number of flowers, number of healthy and diseased cherelles, number of healthy and diseased pods, ripe pod weight, fresh grain weight, and leaf color.
Results: A significant difference was observed in the number of flowers with Cacao combined remedy 200C during November-December 2018. A significant difference was observed in leaf color with Cacao combined remedy 200C during October 2018-January 2019 and with Cacao combine remedy 12C in October 2018. No significant difference was found in treatments for number of healthy and diseased cherelles, number of healthy and diseased pods, ripe pod weight, and fresh grain weight.
Study limitations/Implications: The treatment application period was short. In order to obtain more convincing results, a one-year application period prior to evaluation is suggested.
Findings/Conclusions: The Cacao combined remedy 200C had a positive effect on the number of flowers during the period in which flowering decreases due to environmental conditions and on leaf greenness during four consecutive months of evaluation. Cacao homeopathic combination remedy 12C showed a significant difference for the latter variable only in October 2018. This suggests that the low-dose homeopathic medication and a high centesimal potency promotes a better response of the cacao plant to an acute disease such as moniliasis.
Competitiveness of Mexican vanilla (Vanilla spp.) in the international market
Authors: Peña Sosa Omar , Aguirre López Juan Manuel , Ramírez Tinoco J. Jesús , RIVERA LOPEZ Samuel
Published: April 2024

Objective: To analyze the competitiveness of Mexican vanilla in the international market.
Design/Methodology/Approach: The relative trade balance (RTB) and the revealed comparative advantage index (RCAI) were calculated to analyze the competitiveness of the Mexican vanilla in the international market. Both crushed and whole vanilla beans were evaluated.
Results: Around 1% of the total vanilla area is harvested in Mexico, representing 6% of the world production volume. The Mexican market is competitive in the international whole vanilla beans market, but not in the case of crushed or ground vanilla.
Study Limitations/Implications: The SIAVI portal was discontinued. Therefore, the international vanilla trade data could only be retrieved for the period ending on November 2021.
Findings/Conclusions: The Mexican market has potential for the development of vanilla production. However, current production is practically absorbed by the local market.
Identification of fungal disease in Vainilla planofolia Jacks plants in the central zone of the state of Veracruz.
Authors: Córdova-Nieto Clara , Flores-Estévez Norma , Iglesias-Andreu Lourdes G. , Rosas-Saito Greta H. , Alonso-López Alejandro , Noa-Carrazana Juan C.
Published: April 2024

The state of Veracruz is the main producer of vanilla in Mexico. In recent years, this crop has been seriously affected by serious phytosanitary problems caused mainly by fungal pathogens. For this reason, it was proposed to develop the present work with the objective of determining the causal agents of the disease, incidence, and severity observed in a vanilla plantation located in the locality "El Palmar," Municipality Emiliano Zapata, Veracruz. A census sampling was carried out on one hectare of the plantation to determine the incidence of the disease. Disease severity per plant was determined using a 4-grade scale. Leaves and stems with disease symptoms were collected for morphological description of the pathogenic agents by scanning electron microscopy. The results showed the presence of two species of phytopathogenic fungi, Fusarium oxysporum f. sp. vanillae and Puccinia sinanoemea, known to cause root rot and rust diseases in vanilla. The infection culminated in the deaths of most of the plantation workers. The incidence was classified as severe (4-grade), with 80% infestation by both pathogens. This study contributes to understanding the phytosanitary problems faced by the crop with mixed infections of fungal pathogens.
Analysis of the structure of the global avocado (Persea americana Mill) trade network
Authors: Aguirre-López Juan Manuel , Peña-Sosa Omar , Magallanes-Prado Valeria , Jiménez-Carrasco Juan Salvador
Published: April 2024

ective: To analyze the structure of the global avocado trade network and to understand the dynamics of commercial interaction between the leading countries in the market, using the social network analysis approach.
Design/Methodology/Approach: One-hundred thirty-three countries that established 989 commercial exchange relationships were analyzed. This exchange accounted for 99% of the volume of the global avocado market for the year 2021.
Results: The significant diversification in the import sources and export destinations of countries such as Netherlands and Spain suggests a robust and diversified trade strategy. Network indicators give a valuable insight into the centrality and importance of countries in the global avocado trade network. Mexico plays an important role in the network that goes beyond the quantity produced.
Study Limitations/Implications: The most current analyzed data available to date belong to the year 2021.
Findings/Conclusions: The analysis reveals the complex dynamics of interaction between the leaders of the global avocado trade.
Entre el cielo y el inframundo: los seres alados de los mayas
Authors: Morante López Rubén B.
Published: April 2024

En nuestras investigaciones realizadas en Chichén Itzá encontramos edificios decorados con relieves y esculturas en bulto donde se plasmaron personajes ataviados como aves o que aparentan estar suspendidos en el aire. Los vimos también en sitios cercanos de península de Yucatán, como Ek Balam y Tulum. El sentido que tenían estas esculturas, al parecer, estuvo vinculado a leyendas cósmicas donde hombres, animales y plantas transitaban entre los tres planos del universo: el firmamento, la tierra y el inframundo. Hablamos sobre todo de edificios del periodo temprano de ocupación de Chichén Itzá (800 a 1000 d.C.) ubicados en los sectores conocidos como el Osario y Chichén Viejo. La propuesta iconológica que aquí presentamos se refuerza con estudios geográficos y astronómicos.

In our investigations carried out in Chichén Itzá we studied buildings decorated with reliefs and bulk sculptures where persons attired like birds appear to be suspended in the air. We also saw them in nearby places on the Yucatan Peninsula, such as Ek Balam and Tulum. The meaning of these sculptures, apparently, was bound to cosmic legends where men, animals and plants traveled between three planes of the universe: firmament, earth and underworld. We talk about buildings belonging to early periods of occupation of Chichén Itzá (800 to 1000 AD) located in the sectors known as El Osario and Chichén Viejo. The iconological proposal we present here is reinforced with geographical and astronomical studies.
The Trees Speak for Themselves
Authors: Hughes Bella
Published: April 2024

Elif Shafak's 2021 novel The Island of Missing Trees describes fictional events that occur on the real island of Cyprus during the war between the Greek and the Turkish inhabitants of the island. This story is told from multiple points of view at various points in time in both Cyprus and London, where the characters move to and live following the events of the war and their families’ disagreements with their relationship. What is unique about Shafak's storytelling is her use of a fig tree as a primary narrator of events. While the use of non-human narrators is not a new strategy, most of these occurrences involve animal speakers rather than plants or objects. In delivering a fiction narrative from the point of view of a fig tree, Elif Shafak's The Island of Missing Trees introduces readers to multispecies encounters by providing an example of how arboreal figures communicate and experience history alongside humans in an anthropocentric world, and further encourages prosocial behavior between human and non-human species. Based on Shafak's novel, theories of attentiveness and slow-violence, and studies on the effect of non-human narrators on readers, including these "non-living" narrators in widely accessible pieces of fiction not only informs audiences of the multispecies encounters that occur in everyday life, but also opens more avenues of multispecies conservation.
Un algoritmo eficiente para modelar una sección transversal del cauce del arroyo Sauce Corto, Sistema de Ventania
Authors: Álvarez Marcela P. , Buffo Flavia E. , Gentili Jorge , Gil Verónica
Published: April 2024

En este artículo se presenta un algoritmo para modelar una sección transversal de la cuenca alta del arroyo Sauce Corto, con el objetivo de calcular el area y el perímetro mojado de la sección de cauce para una altura dada. La finalidad del mismo es obtener valores más precisos de caudal para su aplicación al estudio de inundaciones. La sección transversal se modela utilizando una spline cúbica natural a partir de un perfil topobatimétrico de dicha sección definido mediante una cantidad discreta de mediciones de campo. Luego, se calcula el área y el perímetro mojado de la sección modelada aplicando conceptos de cálculo integral y cálculo numérico. El algoritmo se implementa en MATLAB y se obtienen resultados para diferentes casos de estudio. Se propone este problema como un interesante proyecto de computación para alumnos que cursan la asignatura Métodos Numéricos en el segundo año de carreras como matemática, oceanografía e ingenierías entre otras.
Probabilidad condicional: La real y la de libro
Authors: Alvarez Agustín
Published: April 2024

En este trabajo se muestra como un cambio aparentemente insignificante en la formulación de un problema de probabilidad condicional puede cambiar la solución de manera drástica. Se muestra como pueden estar involucradas en la resolución del problema variables aleatorias “tácitas” que muchas veces obviamos e incurrimos en una resolución errada del problema.
Caracterización aleatoria del valor P y sus implicancias para la inferencia
Authors: Agnelli Héctor
Published: April 2024

Es una práctica rutinaria entre los usuarios de la estadística utilizar el valor p de un test como parte de un procedimiento de decisión para rechazar o no la hipótesis nula, dado que su cálculo es efectuado por algún software estadístico su aplicación está casi automatizada. Sin embargo la ausencia de reflexión acerca del significado del mismo lleva a asignarle interpretaciones incorrectas tales como: creer que el valor p entrega la probabilidad de que la hipótesis nula sea verdadera, que valores pequeños del mismo implican un efecto de tratamiento de gran magnitud o que es una evidencia a favor de la replicación de losresultados. Considerando que en la etapa de su enseñanza presentaciones alternativas del tema pueden contribuir a disipar interpretaciones erróneas como las señaladas, en el presente trabajo se hace una caracterización de la naturaleza aleatoria del valor p: como una probabilidad, como una variable aleatoria y como un estadístico. También se presentansimulaciones que procuran aclarar el verdadero alcance del valor p.
¿Variabilidad = Variable?
Authors: Borjas Mauricio Enrique , Suzaño Héctor Orlando , Ahumada María Cristina
Published: April 2024

Se usan muchas veces conceptos estadísticos sin conocer sus definiciones, sus características y/o sus limitaciones. Una indagatoria con alumnos de nuestra facultad, nos hizo conocer que el concepto de variabilidad no está bien entendido aún en los niveles superiores, donde se estudia estadística. A raíz de estos resultados nos propusimos diseñar una estrategia didáctica tendiente a que el concepto de variabilidad tenga el sentido que debe tener y no se deje al olvido con tanta facilidad. La propuesta se basó a partir de dos preguntas, propone recoger datos reales y contextualizados en el ámbito escolar, llevándolos al análisis de las observaciones con la realización de tablas y gráficos. De una manera dinámica tratamos de presentar los conceptos que son necesarios para esta propuesta, y trabajar entre las cosas más comunes de los alumnos.Estamos convencidos que la observación que proponemos ayudará a la mejor comprensión del concepto de variabilidad. Queremos aportar con estas ideas, que llevaremos a la práctica cuando tengamos la oportunidad en nuestra carrera y en nuestro futuro docente. Sabemos que, aunque la estadística se incluya de una forma oficial en el currículo no necesariamente se enseña, por diferentes motivos, y hace falta mucho material del tema.
Redes Neuronales Artificiales
Authors: Tablada Claudio Javier , Torres Germán Ariel
Published: April 2024

Una Red Neuronal Artificial es un modelo matemático inspirado en el comportamiento biológico de las neuronas y en la estructura del cerebro, y que es utilizada para resolver un amplio rango de problemas. Debido a su flexividad, una única red neuronal es capaz de realizar diversas tareas. En este artículo aplicaremos las mismas para resolver tareas de clasificación en el plano.
Desarrollo del Pensamiento geométrico en el futuro Profesor de Matemática
Authors: Cerizola Norma R. , Martínez Ruth L. , Miní María A.
Published: April 2024

Hasta hace no más de tres décadas las investigaciones sobre la enseñanza y elaprendizaje de la Matemática, soslayaban la naturaleza de la misma. Actualmente sehan realizado abundantes y profundos estudios sobre distintos fenómenos que emergenen los procesos involucrados en su aprendizaje y que están relacionados concaracterísticas propias de esta ciencia.Por ello, la comprensión de su naturaleza, su creación y funcionamiento, se constituyenhoy en conocimientos imposibles de ser ignorados por aquellos que en un mañanapróximo deberán enseñarla.Consideramos que un futuro profesor de Matemática, básicamente debe alcanzar unaformación matemática sólida. Pero ésta no debe limitarse sólo a la comprensión deteorías matemáticas ya formalizadas, sino que debe complementarse con la de otrosaspectos que lleven a una visión más amplia y rica de esta ciencia, tales como lasrazones del surgimiento de las teorías, su construcción histórica y los problemas queéstas resuelven.Nuestra labor como formadoras de futuros profesores de Matemática en la UniversidadNacional de San Luis, nos ha llevado a realizar algunas experiencias sobre laenseñanza de la Geometría Sintética, articulando los aspectos señalados anteriormente.Considerando el Problema de Apolonio como “hilo conductor histórico” y,centrándonos en su solución por medio de la transformación geométrica llamada“Inversión”, este trabajo tiene como objetivo proponer una modalidad de abordaje parala enseñanza de la Geometría.También proponemos varios problemas que se solucionan elegantemente mediante estatransformación.
La ecuación pitagórica
Authors: Santana Sergio Falcon
Published: April 2024

En este artículo se pretende encontrar todas las soluciones de la ecuación pitagórica a partir de un minucioso desarrollo y aplicando distintos teore mas que se demostrarán a lo largo de esta construcción.Finalmente, dado un número cualquiera se podrán encontrar todos los pares de números naturales que formen con él una solución de la ecuación de Pitágoras.
Liken God to the (Disabled) Servant
Authors: Wagner Eric
Published: April 2024

When Isaiah 40:18 asks “To whom might you liken God? What likeness might you set up for him?” readers of Isaiah 40-55 encounter potent rhetoric that invites analysis. Recognizing that corporeality is key to the rhetoric of Isaiah 40-55, spatial theory and disabilities studies offer promising hermeneutical approaches to analyze the bodies of Isaiah 40-55. By synthesizing these approaches, this study establishes a mixed-methods approach which it then applies to representations of corporeality in Isaiah 40-55. This mixed-methods analysis reveals an underlying corporeal spatial rhetoric throughout Isaiah 40-55. Characters portrayed with only a single reference to their body tend to remain insignificant. Characters with two or three references to their body typically appear in weak (straw man) arguments. Characters represented with greater corporeal complexity (i.e., more than three body parts) prove to be rhetorically complex figures. Identifying comparable complexity in God’s body and the body of the Servant, the conclusion emerges: liken God to the (disabled) Servant.
Türk Bankacılık Sektöründe Çeşitlendirme ve Risk: Mevduat Bankaları İçin Dinamik Panel Veri Analizi
Authors: Sarıgül Haşmet
Published: April 2024

Bu çalışmada varlık, gelir ve fon kaynaklarının çeşitlendirilmelerinin bir dizi bankaya özgü değişkenle birlikte Türkiye ’de faaliyet gösteren bankalarının risk düzeyleri üzerindeki etkileri araştırılmıştır. Genelleştirilmiş Momentler Yöntemi tahmincileri kullanıldığı çalışmada yirmi mevduat bankasının 2005-2021 dönemi yıllık verilerine başvurulmuştur. Gerçekleştirilen dinamik panel veri analizinin bulguları varlık ve fon kaynakları çeşitlendirmelerinin çalışmada bankaların risk göstergesi olarak kullanılan Z-skorları üzerinde istatistiksel olarak anlamlı pozitif etkisi olduğunu ortaya koymaktadır. Bir diğer ifadeyle varlık ve fon kaynaklarının çeşitlendirilmesi bankaların risk düzeylerini düşürmektedir. Gelir çeşitlendirmesinin ise mevduat bankalarının finansal sıkıntıya düşme olasılıkları üzerinde anlamlı bir etkisi belirlenememiştir.
Behiç Ak’ın Çocuk Romanlarında Çocuk Psikolojisi
Authors: Akın Erhan , Vural Nergiz
Published: April 2024

Çocuk edebiyatı ile ilgili yapılan çalışmalar incelendiğinde eserlerin, ağırlıklı olarak çocuk edebiyatı ilkelerine uygunluğu açısından ele alındığı görülmüştür.. Ancak çocuk edebiyatı eserleri, eserlerin içeriğinin ve işleniş biçiminin çocukların psikolojisine uygunluğu açısından ele alınmamıştır. Bu amaçla, çalışmada günümüzün bilinen yazarlarından Behiç Ak’ın çocuk romanlarından tarihsel olarak belirlenmiş ilk üç romanı olan “Yaşasın Ç Harfi Kardeşliği, Postayla Gelen Deniz Kabuğu, Eve Giden Küçük Tren” eserleri çocuk psikolojisi açısından incelenmiştir. Çalışmada çocuk psikolojisini etkileyen unsurları bulmak amaçlandığından eser incelemesi yapılmış, bu nedenle nitel araştırma yöntemlerinden doküman incelemesi yöntemi kullanılmıştır. Verilen eserler çocuk psikolojisini etkileyen faktörler açısından incelendiğinde yazarın, eserlerinin merkezine çocuğu yerleştirdiği, çocuğa değer verdiği ve çocuk psikolojisini olumsuz etkileyen unsurları eleştirdiği sonucuna varılmıştır. Eserlerindeki çocuk karakterlerin etkilendiği çevresel ya da bireysel faktörler çocuk psikolojisinin de doğruladığı sonuçlara ulaşmıştır. Çocuğun psikolojisinin toplumu ve tüm insanlığı etkileyebildiğini bilen yazar, çocuğa nasıl davranılması gerektiğini eserlerinde işleyerek sağlıklı bir toplum oluşturma yolunda sağlam adımlar atmıştır.
İngilizce Öğretmenlerinin Sınıf Yönetimi Anlayışları ve Lise Öğrencilerinin İngilizce Dersine Yönelik Tutumları: Bir Karma Yöntem Araştırması
Authors: Bozkur Helin , Polat Murat
Published: April 2024

Bu araştırma, İngilizce öğretmenlerinin sınıf yönetimi anlayışları ile lise öğrencilerinin İngilizce dersine yönelik tutumları arasındaki ilişkiye öğrencilerin bakış açıları üzerinden ışık tutmak amacıyla gerçekleştirildi. Araştırma bir karma yöntem araştırmasıdır. Örneklem grubunu 265 [197 kız; 68 erkek] lise öğrencisi oluşturmaktadır. Araştırmanın hem nicel hem de nitel verileri Türkiye’nin Doğu Anadolu Bölgesinde bulunan bir şehir merkezindeki üç farklı devlet lisesinden toplanmıştır. Ulaşılan veriler üzerinde ilk olarak; betimsel ve nedensel-karşılaştırmalı istatistiksel analizler yapılmıştır. İkinci olarak, PLS-SEM yaklaşımı temelinde bir yol analizi ölçüm modeli oluşturulmuş ve model sınaması gerçekleştirilmiştir. Üçüncü olarak toplanan nitel veriler üzerinde içerik analizi uygulanmıştır. Veri analizi sonrasında elde edilen nicel ve nitel bulgular birlikte değerlendirilerek araştırmanın sonuçlarına ulaşılmıştır. Buna göre; İngilizce öğretmenlerinin sahip oldukları sınıf yönetimi anlayışlarının lise öğrencilerinin İngilizce dersine yönelik tutumlarının anlamlı bir yordayıcısı olduğu ortaya çıkmıştır. Buna göre, sınıf yönetimi anlayışı değişkeni ile kurulan modelin İngilizce dersine yönelik tutum puanlarındaki değişimin ~%9.3’ünü anlamlı düzeyde açıklamakta olduğu söylenebilir. Bu sonucu ulaşılan yol analizi bulguları ile öğrencilerden yapılan doğrudan alıntılar da desteklemektedir. Ayrıca, İngilizce öğretmenlerinin demokratik sınıf yönetimi anlayışlarının, öğretmenlerin otoriter sınıf yönetimi anlayışları ile öğrencilerin İngilizce dersinin önemine yönelik tutumları arasında tam aracılık etkisine sahip olduğu da belirlenmiştir (p<.001). Araştırmanın sonuçları doğrultusunda İngilizce derslerindeki sınıf yönetimi anlayışı üzerine İngilizce öğretmenleri için birtakım önerilerde bulunulmuştur.