bluuebunny/crossref_metadata_2025 huggingface dataset:
Experience of risk management implementation in hygiene and labour safety and possibility of its implementation at forestry units in Ukraine
Authors: Gilpert V.V.
Published: March 2024

The world experience of level minimization for workplace injuries and professional diseases is considered. The prospective of risk-oriented approach principles implementation into the national legislation in the field of labour safety are pointed out. It is highlighted that  the system of labour safety and risk management implemented in 2015 in forestry has become a new turn to the modern approaches to transform the system of labour safety management at forestry units. The range of measures is proposed to support the certification of systems of hygiene and labour safety management in accordance with the new standard ISO 45001.
Formation of parameters of elements of hoisting and transport machines of manipulator type at the design stage
Authors: Bakay B.Ya. , Hobela V.M.
Published: March 2024

Techniques and principles of designing loading machines of manipulator type are diverse and complex. Modern methods of designing loading machines and their individual elements are implemented on the basis of analysis of the technological process in which they are expected to operate. Also, to reduce the cost and reduce the time of design, manufacture and implementation of special purpose loading machines, increase their maintainability and facilitate the acquisition of many domestic and foreign companies began to use unit-modular design. This approach allows to divide the loading machines of the manipulator type into simpler functional elements, the pliability of which is easy to determine by the methods of the theory of resistance of materials. To transition from the pliability of such individual elements to the pliability of loading machines in general, use the matrix of transmission relations obtained in the process of force analysis and calculation of elements for accuracy. The aggregate-modular principle can be one of the main principles of realization of loading machines of manipulator type. This principle makes it possible, given the limited number of normalized elements to create a specialized design of the loading machine, which best meets the requirements of a particular technological task and there is no redundancy. This approach in each case allows to reduce the time of development and design of specialized hoisting machines of the manipulator type, increase reliability due to the durability of the elements included in it, reduce the cost of production by reducing the range of parts and components. It is offered to carry out formation of constructive parameters of elements of loading machines of manipulator type at a design stage by carrying out the power analysis and calculation of elements on accuracy. This improves the known design solutions, making them more suitable for practical application.
Invasion of emerald ash borer Agrilus planipennis Fairmaire (Coleoptera: Buprestidae): the tactic of actions
Authors: Matsiakh Iryna
Published: March 2024

This review summarizes the behaviour of emerald ash borer (EAB) and aims as contributing to the challenges of detecting and managing this pest, along with an array of EAB impacts recorded in USA, Canada, and Russia, including variation in host preference and prediction of invasion spread. It provides an overview of tactics available to manage EAB infestations. EAB was first recorded in Ukraine on 20-22 June 2019. Ash trees in Starokozhiv Forest and field shelterbelts in its vicinity (Markivka district, Luhansk region of Ukraine) were examined and officially reported by National Plant Protection Organization of Ukraine in autumn 2019. EAB is included in the list of 20 priority quarantine pests of the EU (EU 2019) including Ukraine. Detection of EAB in Ukraine requires detailed research and growing awareness of its biology, ecology, interaction with hosts, spread prediction especially because the species is distinguished by its wide plasticity and ability to adapt to different ecological conditions within its native range. The pest is quickly spreading to the south and will undoubtedly occur soon in other European countries. The analyses of the forecasting model of EAB spread have shown no significant geographic barriers which could slow the spread of the pest to the neighbouring countries. Consequently, the probability of EAB detection in western Europe can be up to 15–40% in a couple of years. No case of serious A. planipennis damage to Fraxinus excelsior in European forests including Ukraine has been detected yet. Therefore, it is still unknown whether A. planipennis will become a devastating forest pest in Europe or just a pest of urban plantings. The biology and ecology of A. planipennis in Russia are similar to those in North America and China, with only two exceptions: parasitism is low, and host trees are highly susceptible. More research is needed to understand the behaviour of this pest in Ukraine, encouraging the scientists from universities, government agencies, and companies to continue to discover EAB-related issues in order to advance EAB management and ash conservation. Our understanding on how EAB can be managed/controlled continues in different countries and methods with available monitoring techniques (e.g. visual detection, an array of woodpeckers, use of pheromone traps, girdled ash trees, branch sampling techniques, insecticides, and native larval parasitoids or introduced parasitoids) were discussed in this review paper. It aims at developing adaptive forest management options/strategies and controlling the movement/spread of EAB for all interested stakeholders in Ukraine.
Analysis of volumetric output of lumber, taking into account the quality classes of dust raw materials
Authors: Mayevskyy V.O. , Ferents O.B. , Kopynets Z.P. , Andrashek Yo.V. , Mayevska O.M.
Published: March 2024

Due to the cancellation of standards developed before 1992 that regulate the requirements for raw materials and products of the woodworking industry, the norms of output of timber from dust raw materials have lost their relevance in Ukraine since January 2019. In particular, the incongruity of the number of quality classes (varieties), the difference in quality requirements and determination of the volume of dust raw materials caused the need to develop new standards of consumption of dust raw materials for timber. The consumption of dust raw materials for the production of timber depends on a number of factors, in particular: wood, sawing patterns (posture), thickness of headsaws, diameter, length, convergence, curvature and other signs of dust raw materials (timber), timber specification. The qualification of workers, technical condition of the equipment, organization of labor in compliance with technological discipline at all production sites also have a significant impact on the consumption of dust raw materials for the production of timber. According to DSTU EN 1316-1:2018 on the quality of timber, beech materials, for instance, are divided into four classes of quality (A, B, C, D). In comparison to this, they were divided into three varieties (1, 2, 3), according to GOST 9462-88. Consequently, there are differences in determining the quality of timber, which should be taken into account when setting the consumption standards of dust raw materials in the production of timber depending on the quality of raw materials and in accordance with the requirements of the current regulations. Analysis of the results of theoretical and experimental studies of volume output of lumber made it possible to develop scientifically reasonable standards for consumption of dust raw materials considering the quality of raw materials of coniferous and hardwoods during their sawing on dust and tape pads. It indicates that these results are adequate and suitable for use in production conditions, in particular for beech wood, which was used for the cost regulations.
Determination of productivity of loading machines of manipulator type in log sort yards
Authors: Bakay B.Ya. , Rudko I.M. , Mahura В.O.
Published: March 2024

One of the important tasks of increasing the level of mechanization and implementation of resource conservation in log sort yards of various types with low turnover is to increase the efficiency of loading, stacking, sorting and unloading, as well as supply of round timber to specialized production lines for processing, which form the whole complex of transport-warehousing and unloading-loading works. Improving the efficiency of transport-warehousing and unloading-loading works in log sort yards with the use of loading machines of manipulator type provides a solution to a number of economic problems: increase mechanization of forestry works to 100%, increase static load on the car at loading and unloading warehouses, increase the productivity of loading and stacking works by 1.5-2 times, reduce excess stocks of assortments in log sort yards by 1.5 times, reduce the total area of log sort yards, minimize cases of occupational injuries, etc. Despite the obvious advantages of using manipulator-type loading machines, which are equipped with grab grippers, to perform lifting and transport operations, these machines are currently practically not used in log sort yards. The problem is primarily due to the lack of scientifically sound methods for determining the productivity of hoisting and transport machines of the manipulator type in log sort yards. It is proposed that increasing the efficiency of transport and warehousing and loading and unloading operations in log sort yards with a turnover of up to 100 thousand m3 is possible due to large-scale introduction of manipulator-type machines, the use of advanced technologies and equipment adapted to the new production situation on the basis of determining the productivity of loading machines of the manipulator type for the formation of their modes of operation in log sort yards.
Comparative analysis of physical and mechanical characteristics of bent elements from different tree species
Authors: Grytsak S.A. , Gayda S.V.
Published: March 2024

The technology of bending solid wood with preliminary hydrothermal treatment and with the use of production residues as well as consumed wood as raw materials has been developed. The analysis of the equipment for performance of technological operations of research process of reception of curvilinear preparations is carried out. A method was developed and the length of the defect-free arc of bent wood elements of different breeds and ages was investigated using laboratory installations for hydrothermal treatment and bending of samples. The regression equations for wood of ash, pine and oak species are obtained, which describe the process of wood bending and establish the dependence of the quality of wood bending on them individually and comprehensively. Nine groups of graphical dependences are constructed, which clearly describe the researched process. It is proved that the used wood of the oldest age is more susceptible to bending than freshly cut and dried wood and is suitable for this technological process. Calculations have shown that in our studies, the maximum length of a defect-free arc for ash wood is 40.95 mm, for pine – 37.45 mm, and for oak – 35.25 mm. It was found that wood samples are best bent with increasing duration of hydrothermal treatment and humidity of the studied samples and reducing their size. It is determined that the optimum humidity of the samples for the bending process is a humidity of 25-30%, because the greater the value of this factor leads to the pressure of free moisture on the walls of wood cells and the destruction of bent samples. Practical recommendations have been developed for the introduction of solid wood bending technology with prior hydrothermal treatment, which is economical in terms of wood raw materials and allows to obtain blanks of different complexity of shape.
Research of technological processes of manufacture of legs of dining tables of various designs
Authors: Gayda S.V. , Voytovych I.G. , Orikhovskyy R.Ya.
Published: March 2024

A technical description of the legs of dining tables of various designs with the texture of oak wood with the following dimensions of 750 × 52 × 52 mm. A method for studying the production processes of production of dining table legs of various designs with the texture of oak wood. Necessary materials have been calculated to make three types of dining table legs with oak wood texture. The necessary equipment has been calculated and the routes of technological processes have been developed and the planning of the shops has been presented in order to make three varieties of modern dining table legs with oak wood texture. The comparison of technological processes of making dining table legs with the texture of oak wood is made. You have determined the rational technological process of making the legs of dining tables. It is estimated that the third option for making dining table legs with a wood texture of square cross-section is optimal, where the cost of equipment is 817.25 thousand UAH, the number of employees 10 people, total power is 34.8 kW. It should also be noted that the third option generates the least wood waste and residues, in particular in the amount of 103.37 m3, and the cost of materials for a set of legs in the amount of 4 pieces is the lowest, amounting to UAH 312, which is much less than other options. The highest value of economic efficiency is the third option of investment, which is 0.208. The payback period for this option is 4.8 years. Therefore, the technology of making dining table legs is recommended, in which the base is made of three laminated rails with chipboard with a thickness of 16 mm with a square cross section of 48 (16 × 3) × 48 mm, and the shank with a cross section of legs made of planed oak veneer with a thickness of 2 mm.
Biometrics in healthcare as a technological contribution to mitigate patient identification errors: A Review
Authors:   Zahraa. A. Bahman
Published: March 2024

Biometrics are becoming essential and have been recommended as a technological method for identification due to its ability to provide unique verification of a person. Biometrics use physiological characteristics of the human’s body which were chosen because they usually do not change over a lifetime and cannot be duplicated or forgotten. Different biometrics technologies have proven to be applicable to solve the problems of duplicated patients’ records and assure a correct identity. This research would make contribution in relation to solutions for patient identification methods within the healthcare sector, by expanding the knowledge base of biometric technology as an identification system that have been used in healthcare sector worldwide. Also, pointing out the patient misidentification issue within hospitals. The research may have influence on the awareness to the importance of proper identification and to the biometric use in the healthcare sector.
Nephrotic Syndrome in a 24-Year-Old Female with Myelodysplastic Syndrome: A Case Report
Authors: Cindy Yusliani  , Ita Murbani Handajaningrum
Published: March 2024

Background: Nephrotic syndrome is rare in the normal population but is reported more frequently in patients with myelodysplastic syndrome (MDS). The pathogenesis is not clearly known, but it is thought to be related to immune dysregulation.

Case presentation: We report a case of nephrotic syndrome in a 24-year-old woman with MDS. Patients complain of swelling, foamy urination, paleness, weakness, bleeding gums, and reddish spots on the body. Physical examination revealed hypertension, anemia, petechiae, and edema. Laboratory examination showed anemia, thrombocytopenia, hypoalbuminemia, dyslipidemia, and proteinuria. Abdominal ultrasound showed chronic processes in the kidneys, ascites, and pleural effusion. A renal biopsy showed membranoproliferative glomerulonephritis.

Conclusion: Nephrotic syndrome in MDS patients is rarely reported, and its pathogenesis is still not clearly understood. Further research is needed to understand the pathogenesis and optimal therapeutic options.
Turvallisuuspoliisista turvallisuuspalveluksi.
Authors: Luukkonen Mari
Published: March 2024

Suojelupoliisia ja sen toimintaa tarkasteltaessa keskitytään yleensä vastavakoiluun ja terrorismin torjuntaan. Tässä artikkelissa suojelupoliisin historiaa tarkastellaan organisaation strategisen kehittämisen ja johtamisen näkökulmasta. Tarkasteluajanjaksona on Seppo Tiitisen päällikkökausi 1978–1990, jolloin tavoitteena oli viraston kehittäminen pohjoismaisten turvallisuuspoliisien tasolle. Tuon tavoitteen voi sanoa toteutuneen hyvin. Samalla normalisoitui viraston yhteiskunnallinen asema ja merkitys osana Suomen kokonaisturvallisuudesta vastaavaa viranomaiskenttää. Selkeimmät epäonnistumiset olivat sen sijaan viraston sisäisiä. Toteutumatta jäivät niin toiveet organisaatiokulttuurin muutoksesta kuin valtiojohdon päätöksentekoa tukevasta analyysitoiminnasta.
The usual topics that interest historians of Finnish Security Police (SUPO) are counter espionage and counter terrorism. In this article, the viewpoint is however that of organizational development and management on strategic level. The article covers the directorship of Seppo Tiitinen (1978−1990), when the aim was set to bring SUPO to the same level as its Nordic partners. That aim was realised quite well. At the same time SUPO’s status and significance in Finnish society was normalized – it became one authority among others in charge of national security. The most evident failure was the inability to achieve change in organisational culture. In addition, providing significant intelligence for the government didn’t come to realization as intended.
”Korkea peli”
Authors: Mainio Aleksi
Published: March 2024

Suojelupoliisi tutki yöpakkaskriisin päivinä emigrantti Vadim Björkelundin suurta, poikkeuksellisen monihaaraista vakoilujuttua. Selväksi tuli, että maanpetoksellinen toiminta oli saanut alkunsa pian jatkosodan jälkeen, mutta tuomiota siitä ei koskaan annettu. Miksi syytettä ei nostettu? Mitä tapaus kertoo vuosien 1944–1959 Suomesta? Venäläisemigranttien ja eri maiden tiedustelu-upseerien ristikkäistä maailmaa on tutkittu melko hyvin vuosien 1917–1939 osalta, mutta myöhempi tilanne on monessa suhteessa tuntematon. Artikkelissa päähuomio kiinnittyy vuosien 1944–47, 1953 ja 1958–59 taitekohtiin. Ensimmäinen avaa portit Neuvostoliiton tiedustelulle, toinen nostaa Suomen vastavakoilun näkyvämmin esiin ja kolmas mullistaa vielä kerran eri tiedustelu- ja turvallisuuspalveluiden valtasuhteet. Lähdepohja rakentuu erityisesti Suojelupoliisin arkiston ja sen agenttitietoja paljastavien, sensuroimattomien osien varaan.
In 1958, the Finnish security police discovered a major espionage case related to a Russian emigrant Vadim Björkelund. It became clear that Björkelund, a Finnish citizen, had worked as an agent for the KGB since the beginning of 1945. However, he was never charged with espionage. How is this possible, since evidence for a treason case was indisputable? And what does this reveal about Finland's international position and relations with the Soviet Union? Connections of Russian emigrants to the security and intelligence services during 1917–1939 have been studied quite a lot, but the years after that are largely unknown. This article focuses on the years 1944–47, 1953 and 1958–59, that are all turning points in the Finnish-Soviet relations, as changes in relations during these years also greatly affected Björkelund’s role as a trator and eventually dictated his destiny. Materials of the archives of the Finnish Security Police serve as main sources of this article.
Pohdintoja laskennallisten ja digitaalisten ihmistieteiden suhteesta
Authors: Elo Kimmo
Published: March 2024

Kokoomateos “Information flows across the Baltic Sea” herättää lukijassa kysymyksen digitaalisen ja laskennallisen tutkimusorientaation välisestä suhteesta historiantutkimuksen piirissä. Vaikka näitä käsitteitä tunnutaan käytettävän usein synonyymeinä, niiden välillä on sekä paradigmaattinen että metodologinen ero, jolla on olennainen vaikutus tutkimusprosessiin. Siinä missä digitaalisuus on eräälainen sateenvarjokäsite, laskennallisuus paradigmana pyrkii tuottamaan parempaa ymmärrystä monimutkaisesta maailmasta informaatiota mallintamalla ja prosessoimalla. Digitaalisen ja laskennallisen välisen eron korostaminen ei siten ole akateemista hiustenhalkomista, koska tällä jaottelulla on perustavanlaatuinen merkitys sille, millaista tutkimusprosessia tutkija tutkimansa aiheen ympärille aikoo rakentaa.
RECONSTRUCTION OF DIVACANCY IN ZIGZAG-BUCKLED SILICENE NANORIBBONS
Authors: Ngo Van Chinh , Pham Nguyen Huu Hanh , Nguyen Thi Kim Quyen , Phan Thi Kim Loan , Vu Thanh Tra
Published: March 2024

In this study, we use a tight binding model to investigate structural and electronic changes in zigzag-buckled silicene nanoribbons (ZBSiNRs) with two vacancies at different positions. We divide the defects into two categories based on a difference in geometric properties. The results show that the first- and second-order interaction parameters of two atoms of the same type play an important role in the electronic properties of this material. Vacancies near the edge have a stronger effect than those near the center of the ribbons. We further show that each type of divacancy will give a different result under the influence of a perpendicular electric field. This is a favorable condition for controlling the conductive state of materials in future applications in the semiconductor and thermoelectric industries.
Recent developments in the engineered biosynthesis of fungal meroterpenoids
Authors: Quan Zhiyang , Awakawa Takayoshi
Published: March 2024

Meroterpenoids are hybrid compounds that are partially derived from terpenoids. This group of natural products displays large structural diversity, and many members exhibit beneficial biological activities. This mini-review highlights recent advances in the engineered biosynthesis of meroterpenoid compounds with C15 and C20 terpenoid moieties, with the reconstruction of fungal meroterpenoid biosynthetic pathways in heterologous expression hosts and the mutagenesis of key enzymes, including terpene cyclases and α-ketoglutarate (αKG)-dependent dioxygenases, that contribute to the structural diversity. Notable progress in genome sequencing has led to the discovery of many novel genes encoding these enzymes, while continued efforts in X-ray crystallographic analyses of these enzymes and the invention of AlphaFold2 have facilitated access to their structures. Structure-based mutagenesis combined with applications of unnatural substrates has further diversified the catalytic repertoire of these enzymes. The information in this review provides useful knowledge for the design of biosynthetic machineries to produce a variety of bioactive meroterpenoids.
Probabilistic prediction of “irrational” decisions from semantic composition of contexts
Authors:   ITMO University, Surov Ilya A.
Published: March 2024

Difficulties in prognosis of human behavior are due to the complexity of our cognition, routinely breaking the boundaries of classical rationality. The paper solves this problem for the simplest kind of such “irrational” behavior in which a single binary decision is made in three related contexts. Subjective meanings of these contexts relative to the basis decision alternative are represented by three qubit states, borrowed from quantum theory. These states are bound together by linear superpositions, which encode semantic composition of the contexts in the subject’s mind. The resulting theory supplements classical probabilistic model with nonlinear interference factor, accounting for the “irrational”, emotionally-semantic side of intelligence. This model is built for different realizations of two classic experiments used to study behavioral irrationality: the prisoner’s dilemma and the two-stage gambling task. In 24 such realizations, the interference phase is shown to fall in a narrow range of values, encoding regularities of semantic composition of contexts. Extrapolation of this regularity to novel experiments allows using the model in prognostic mode. This possibility is tested on the task of probabilistic prediction of target decision based on the same probability in two other contexts. For the prisoner’s dilemma and the two-stage gambling task the such prognosis has relative errors of 9 and 11% respectively. The proposed approach allows for putting other quantum models of cognition and decision to predictive and interpretable use, whereas its principles also apply to modeling of decisions with larger sets of contexts and behavioral options. By formalizing a novel type of semantic regularities behind “irrational” thinking, models of the present type open prospects for empowering the existing means for socio-economical analytics and prediction.
Avaliação do Plano Brasil Maior para o setor siderúrgico : uma análise de custo-efetividade
Authors: Silva Thiago Henrique Cardoso da
Published: March 2024

Este artigo faz uma análise custo-efetividade das ações implementadas no setor siderúrgico pela última política industrial do Brasil: Plano Brasil Maior (PBM). Para isso, formularam-se índices que avaliassem os resultados alcançados por esta política pública. A metodologia sugerida procurou inferir os subsídios para o setor siderúrgico a partir dos principais setores consumidores de aço (construção civil, setor automotivo, máquinas e eletroeletrônicos) e, com esses resultados, calcular o impacto das medidas do PBM para a siderurgia. Entre as conclusões encontradas, pode-se citar que houve um considerável crescimento em variáveis-chave de desempenho do setor de aço nacional durante a política industrial. Entretanto, esse resultado gerou um alto custo fiscal para o Estado e não foi duradouro.
State export financial support of brazilian manufactured products : a microeconometric analysis
Authors: Kannebley Júnior Sérgio , Prince Diogo de , Alvarez Rodrigo Baggi Prieto
Published: March 2024

We investigate the impact of Brazilian state financing to exports – Proex, Exim and Drawback – on the performance of firms in foreign trade between 1998 and 2007. We focus on the i) risk of abandonment of export activity; ii) number of destinations; and iii) export value. Through a quasiexperiment with a unique dataset of Brazilian firms entering foreign markets, we find a positive relationship between export programs and the intensive and extensive export margins, as well as with persistence in international trade, although not all three programs are effective. Supported firms had their chance to keep exporting augmented between 4% and 13%, increasing their number of destinations by up to 43% and the export value between 74% and 90%. The results suggest that financial constraints may limit the export potential of firms and highlight the importance of the government’s export promotion policies, mainly in developing countries which systematically suffer from credit market failures.
Os Planos de saúde na recente crise econômica brasileira
Authors: Marques Rosa Maria , Ferreira Mariana Ribeiro Jansen , Hutz Ana
Published: March 2024

Este estudo tem como objetivo principal evidenciar os efeitos da crise econômica brasileira recente nos planos de saúde. As variáveis analisadas são: cobertura populacional, tipo de contrato, perfil dos segurados quanto ao gênero, concentração do setor e origem do capital e política de reajuste praticada. Para isso, é feita, primeiramente, uma breve retrospectiva histórica da origem da saúde privada no país, especialmente daquela vinculada ao processo de industrialização associado às multinacionais. A seguir, o estudo se debruça sobre a evolução dos planos de saúde a partir do início dos anos 2000, tendo como pano de fundo o desempenho da economia, particularmente do mercado de trabalho. Conclui-se que, assim como a ampliação da cobertura dos planos cresceu com o aumento da formalização nos governos Lula e no primeiro governo Dilma, o desemprego massivo provocado pela recessão, especialmente no mercado formal, acarretou a perda de vínculo com os planos de saúde de significativo contingente de trabalhadores. Esses, em reação à queda do número de segurados, buscaram alterar a sistemática de seus reajustes. O estudo ainda aponta para o aprofundamento da concentração e da presença do capital estrangeiro no setor no período recente.
Gap de rendimentos por gênero no Brasil: o que mudou com a pandemia da covid-19?
Authors: Leite Áydano Ribeiro , Sobreira Diogo Brito
Published: March 2024

A literatura sobre desigualdade de rendimentos tem se preocupado em investigar os seus determinantes, sobretudo os que se relacionam a grupos específicos, como gênero e raça. Investigações sobre os diferenciais de renda entre gêneros têm recebido atenção especial, uma vez que uma parcela do gap pode sinalizar determinado grau de discriminação no mercado de trabalho. Com o choque observado no mercado de trabalho em decorrência da pandemia da covid-19, essas questões tornam-se ainda mais relevantes. Desse modo, este trabalho tem como objetivo estimar e identificar possíveis alterações nos fatores que explicam o diferencial de rendimentos entre gêneros no contexto da pandemia da covid-19. A partir dos dados da Pesquisa Nacional por Amostra de Domicílios (PNAD) Contínua, entre 2019 e 2020, estimaram-se decomposições quantílicas da distribuição de rendimentos. Além disso, as equações salariais foram estimadas com base no viés de seleção observado no mercado de trabalho, por meio do procedimento de Heckman. Os principais resultados apontaram a manutenção da disparidade de rendimento por gênero, embora se observe a redução da intensidade dos parâmetros entre 2019 e 2020. Ademais, quanto aos efeitos características e coeficiente, esses pouco se alteraram, mas é notório que o principal determinante do diferencial de salários é o efeito discriminação.
Intermittency in the Magnetic Hump in the VLISM
Authors: Burlaga L. F. , Berdichevsky D. B. , Jian L. K. , Park J. , Szabo A. , Ness N. F.
Published: March 2024

Voyager 1 has been moving through the very local interstellar medium (VLISM) for ∼1 solar cycle, from 122.58 au on 2012/DOY 238 (August 25) to 158.5 au on 2023.0. A magnetic hump was observed, beginning with an abrupt increase (jump) in the magnetic field strength B and proton density N by a factor of 1.35 and 1.36, respectively, in the course of ∼8 days, ending at ∼2020/DOY 147, after which it remained above the pre-jump levels for 2.6 yr, and it is still increasing. Unlike the three previous jumps, which were followed by a slow decrease in B, B in the magnetic hump continued to increase to a maximum value ∼0.56 nT at ∼2021/DOY 146.7. This paper discusses the intermittency of the magnetic field components and strength in the magnetic hump, and compares them with previous values in the VLISM. We consider the intermittency of the increments of
B
and its components observed on a scale of one day. The distribution function (the Tsallis distribution or q-distribution function) of the increments of hourly averages of the components of
B
had a Gaussian core associated with randomness in the observations, and it had two symmetric tails associated with the observed intermittency. The parameters q-dBR1, q-dBT1, and q-dBN1 increased slightly to a broad maximum with q = ∼1.4 between 2018 and 2019, and then decreased to q ∼ 1 (corresponding to no intermittency) in 2022. The Z-component of the magnetic field is within 4 ± 4 counts (0.02 nT ± 0.02 nT).
The Plasma β in Quiet Sun Regions: Multi-instrument View
Authors: Rodríguez-Gómez Jenny M. , Kuckein Christoph , González Manrique Sergio J. , Saqri Jonas , Veronig Astrid , Gömöry Peter , Podladchikova Tatiana
Published: March 2024

A joint campaign of several spaceborne and ground-based observatories, such as the GREGOR solar telescope, the Extreme-ultraviolet Imaging Spectrometer (EIS), and the Interface Region Imaging Spectrograph (Hinode Observing Plan 381, 2019 October 11–22) was conducted to investigate the plasma β in quiet Sun regions. In this work, we focus on 2019 October 13, 17, and 19 to obtain the plasma β at different heights through the solar atmosphere based on multiheight observational data. We obtained temperature, density, and magnetic field estimates from the GREGOR High-resolution Fast Imager, Infrared Spectrograph, Interface Region Imaging Spectrograph, and EIS and complementary data from the Solar Dynamics Observatory Atmospheric Imaging Assembly (AIA). Using observational data and models (e.g., FALC and PFSS), we determined the plasma β in the photosphere, chromosphere, transition region, and corona. The obtained plasma β values lie inside the expected ranges through the solar atmosphere. However, at EIS and AIA coronal heights (from 1.03 to 1.20 R
⊙), plasma β values appear in the limit defined by Gary; such behavior was previously reported by Rodríguez Gómez et al. Additionally, we obtained the plasma β in the solar photosphere at different optical depths from

log
τ
=
−
1.0

to –2.0. These values decrease with optical depth. This work provides a complete picture of plasma β in quiet Sun regions through the solar atmosphere, which is a prerequisite of a better understanding of the plasma dynamics at the base of the solar corona.
A Reverberation Mapping Study of a Highly Variable Active Galactic Nucleus 6dFGS gJ022550.0-060145
Authors: Li Danyang , Sun Mouyuan , Wang Junfeng , Wu Jianfeng , Zhang Zhixiang
Published: March 2024

We use LCOGT observations (MJD 59434−59600) with a total exposure time of ≃50 hr and a median cadence of 0.5 day to measure the interband time delays (with respect to u) in the g, r, and i continua of a highly variable active galactic nucleus (AGN), 6dFGS gJ022550.0-060145. We also calculate the expected time delays of the X-ray reprocessing of a static Shakura–Sunyaev disk according to the source's luminosity and virial black hole mass; the two parameters are measured from the optical spectrum of our spectroscopic observation via the Lijiang 2.4 m telescope. It is found that the ratio of the measured time delays to the predicted ones is

2.6

−
1.3

+
1.3

. With optical light curves (MJD 53650–59880) from our new LCOGT and archival Zwicky Transient Facility, Pan-STARRS, Catalina Sky Survey, and ATLAS observations, and Wide-field Infrared Survey Explorer (WISE) data (MJD 55214−59055), we also measured time delays between WISE W1/W2 and the optical emission. W1 and W2 have time delays (with respect to V),

9.6

−
1.6

+
2.9

×

10

2

days and

1.18

−
0.10

+
0.13

×

10

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days in the rest frame, respectively; hence, the dusty torus of 6dFGS gJ022550.0-060145 should be compact. The time delays of the W1 and W2 bands are higher than the dusty torus size–luminosity relationship of Lyu et al. By comparing the infrared and optical variability amplitude, we find that the dust-covering factors of the W1 and W2 emission regions are 0.7 and 0.6, respectively. Future broad emission-line reverberation mapping of this target and the results of this work enable us to determine the sizes of the AGN main components simultaneously.
Multiple evidence reveals two new species and new distributions of Calocybe species (Lyophyllaceae) from northeastern China
Authors: Ma Ao , Hu Jia-Jun , Chen Yue-Qu , Wang Xin , Tuo Yong-Lan , Yue Lei , Li Xue-Fei , Dai Dan , Wei Yun-Hui , Zhang Bo , Li Yu
Published: March 2024

The Calocybe species possess notable economic and medicinal value, demonstrating substantial potential for resource utilization. The taxonomic studies of Calocybe are lacking in quality and depth. Based on the specimens collected from northeast China, this study provides a detailed description of two newly discovered species, namely Calocybe betulicola and Calocybe cystidiosa, as well as two commonly found species, Calocybe decolorata and Calocybe ionides. Additionally, a previously unrecorded species, C. decolorata, has recently been discovered in Jilin Province, China. The two newly discovered species can be accurately distinguished from other species within the genus Calocybe based on their distinct morphological characteristics. The primary distinguishing features of C. betulicola include its grayish-purple pileus, grayish-brown to dark purple stipe, smaller basidiomata, absence of cellular pileipellis, and its habitat on leaf litter within birch forests. Calocybe cystidiosa is distinguished by its growth on the leaf litter of coniferous forests, a flesh-pink pileus, a fibrous stipe with a white tomentose covering at the base, non-cellular pileipellis, larger basidiospores, and the presence of cheilocystidia. The reconstruction of phylogenetic trees using combined ITS, nLSU, and tef1-α sequences, employing maximum likelihood and Bayesian inference analyses, showed that C. betulicola formed a cluster with C. decurrens, while C. cystidiosa clustered with C. vinacea. However, these two clusters formed separate branches themselves, which also supported the results obtained from our morphological studies. A key to the Calocybe species reported from northeast China is provided to facilitate future studies of the genus.
Les facteurs expliquant la confiance du consommateur lors d’un achat sur un site marchand : Une étude exploratoire
Authors: Chouk Inès , Perrien Jean
Published: March 2024

Pierre angulaire de toute relation d’échange, la confiance a suscité depuis longtemps l’engouement des chercheurs et des praticiens. Dans le contexte de l’achat sur Internet, la question de la confiance se pose avec plus d’acuité. En effet, les problèmes de fraude auxquels s’ajoute une virtualité totale des échanges découragent plus d’un consommateur à acheter via ce canal. Les vendeurs en ligne gagneraient donc à réfléchir sur les moyens susceptibles d’instaurer la confiance vis-à-vis de leurs sites. L’objectif de cet article est d’identifier, à partir d’une étude qualitative exploratoire, les facteurs déterminant la confiance lors d’un achat en ligne. Ces facteurs sont présentés tel qu’ils sont perçus et appréhendés par les consommateurs .
Réunion de consommateurs : Comprendre les motivations de la participation
Authors: Herbert Maud
Published: March 2024

Pourquoi un individu participe-t-il à une réunion de consommateurs ? Une question simple dont la réponse conditionne le comportement des participants et la qualité du matériel qualitatif recueilli en groupe. Cet article explore les motivations de la participation à une réunion de consommateurs et présente une typologie des participants. L’étude présentée conduit à des implications pratiques quant à la conduite et l’analyse des réunions de consommateurs.
Portrait chinois : Le jeu de la métaphore en tant qu’expérience
Authors: Boulaire Christèle
Published: March 2024

Au travers l’étude du portrait chinois ou test par analogies, l’article invite professionnels et chercheurs à s’intéresser aux qualités expérientielles des outils destinés à supporter un entretien et fait ressortir les bénéfices d’une telle démarche pour augmenter la validité des résultats et de leur interprétation.
Le placement de marques au cinéma : Proposition de la localisation du placement à l’écran comme nouveau facteur d’efficacité potentielle
Authors: Lehu Jean-Marc
Published: March 2024

Le placement de marques et/ou de produits au cinéma paraît susciter un intérêt croissant chez les annonceurs. Après avoir rappelé le principe de la technique du placement de marques et présenté les principales motivations des utilisateurs, cet article propose d’analyser les critères d’utilisation retenus par les professionnels du placement de marques au cinéma. L’article combine une étude qualitative auprès d’un groupe d’experts, une analyse technique d’un long métrage (Minority Report) et une recherche exploratoire à l’aide d’une étude quantitative sur un échantillon de vidéophiles. Un nouveau facteur d’efficacité potentielle du placement de marques est mis en évidence : la localisation du placement à l’écran.
Distribution des rôles dans le canal commercial : I. des intermédiaires peuvent-ils y trouver place ?
Authors: Bultez Alain
Published: March 2024

Sous les feux de la presse comme à la lumière des leçons du passé, l’image du commerçant s’avère loin d’être reluisante. Tant l’histoire, que l’actualité, véhiculent des vues glauques, dramatiquement convergentes, du commerce. Celles-ci conditionnent les représentations qu’en donnent les manuels de marketing et de distribution les plus usités… et ce, à l’insu de leurs auteurs et lecteurs. Semble maintenant venu le temps d’une révision fondamentale de la façon dont est traitée formellement la question existentielle, primaire, concernant tout intermédiaire : la justification rationnelle de son rôle au sein des canaux, circuits et réseaux ; manifestement, plus de rigueur méthodologique et de réalisme s’imposent. L’article suivant s’emploie à susciter une réflexion critique, sur un ton polémique, voulu pour provoquer une controverse constructive, génératrice de thèses adverses.
Internationalisation du distributeur : De l’avantage compétitif à la performance
Authors: Dupuis Marc , Fournioux Jean
Published: March 2024

L’internationalisation des entreprises de distribution connaît un mouvement d’accélération au point de porter la compétition entre leaders à une échelle mondiale. Si des analyses antérieures ont décrit et conceptualisé ce phénomène, peu de travaux se sont intéressés au lien entre avantages compétitifs, décisions stratégiques et performances du distributeur à l’international. Après une revue de la littérature, les auteurs présentent un cadre d’analyse théorique dans une seconde partie. Enfin, sept propositions pouvant servir de pistes de recherches ultérieures pour les chercheurs et de thèmes de réflexion pour les praticiens sont présentées dans une troisième partie.
P2P : La valorisation du contraire
Authors: Ouellet Jean-François , Dussart Christian
Published: March 2024

« Nous jurons fidélité au pingouin, et au régime des propriétés intellectuelles dont il est l’emblême. Une nation, sous Linux, avec de la musique libre et des sources ouvertes donnant accés aux logiciels pour tous. Bienvenue au Brésil ! » Gilberto Gill, en tant que Ministre de la Culture du Brésil (et vedette internationale de la musique pop) a signé ce serment de fidélité.
Taux de réponse et qualité des enquêtes téléphoniques
Authors: Brignier Jean-Marie , Dupont Françoise
Published: March 2024

Le problème des non-réponses constitue à l’heure actuelle une préoccupation importante et croissante dans le domaine des sondages. L’enquête téléphonique se heurte à une double difficulté : les taux de réponse chutent et le taux de couverture des enquêtes réalisées sur lignes fixes diminue. Le maintien de taux de réponse acceptables passe d’abord par une gestion rigoureuse des numéros de téléphone. En outre, la réduction du biais de couverture suppose l’intégration des « exclusifs mobile » dans l’échantillon. Cette intégration se justifie d’autant plus que les taux de réponse obtenus sont comparables à ceux d’une enquête téléphonique sur lignes fixes, moyennant certains aménagements du protocole d’enquête.
Les accords de portage international
Authors: Bueno Merino Pascale
Published: March 2024

L’accord de portage international désigne une coopération entre une grande entreprise et une PME, caractérisée par un partage de savoir-faire et d’expérience sur un marché étranger. L’article analyse les enjeux stratégiques d’une telle coopération pour un grand groupe industriel. Des interviews auprès de quatre grandes entreprises – Rhodia, Pechiney, EDF et Aérospatiale – ont permis de mettre à jour divers enjeux : compléter une gamme de produits, faciliter l’exécution d’un grand contrat remporté à l’étranger, améliorer son image… Deux types d’accords ont été identifiés : le portage commercial, conclu avec une PME complémentaire, et le portage vertical, conclu avec un fournisseur, un sous-traitant ou un client de petite taille.
L’atmosphère du point de vente comme variable stratégique commerciale : bilan et perspectives
Authors: Lemoine Jean-François
Published: March 2024

Nous mettons en évidence deux évolutions récentes constatées en matière de stratégies fondées sur l’atmosphère du point de vente. La première est relative aux objectifs que les distributeurs accordent à ces stratégies. La seconde fait référence à la manière dont ils conçoivent l’environnement d’achat de leur magasin.
Se convertir à un autre marketing ?
Authors: Dambron Patrick
Published: March 2024

L’auteur (2), consultant-formateur en marketing des organisations, en marketing stratégique et en communication, nous livre ici, en tant que lecteur, ses réflexions sur le dernier livre de Georges Chétochine : Le blues du consommateur (1). Nous avons décidé de publier ce texte dans notre rubrique car la réflexion (au demeurant fort engagée) est élargie aux orientations actuelles du marketing. Nous laissons le soin à nos lecteurs de réagir selon leurs points de vue personnels.
Mesure de la performance en grande distribution alimentaire
Authors: Vyt Dany
Published: March 2024

Alors que les grands distributeurs développent de plus en plus le marketing de site pour s’adapter au contexte local dans lequel évoluent les points de vente, leur pratique de benchmarking intègre encore peu les facteurs environnementaux. Après avoir mis en exergue les mesures actuelles de la performance commerciale des réseaux, nous montrons que les mutations actuelles de la grande distribution nécessitent de repenser l’évaluation des points de vente ainsi que la performance de leurs assortiments. Enfin, à partir de données issues d’une chaîne de supermarchés français, nous proposons une technique de benchmarking interne qui intègre les caractéristiques environnementales et détermine un potentiel de vente individuel par catégories. L’objectif de cet outil consiste à évaluer plus équitablement les unités de vente d’un réseau de distribution.
Un exemple de médiaplanning multimédia
Authors: Foucher Stéphanie , Le Blanc Philippe , Morgensztern Armand , Vallaud Thierry
Published: March 2024

Comment allouer un budget média entre les grands médias et la Publicité Non Adressée (PNA ou ISA), telle est la question à laquelle tente de répondre cet article. Au-delà de la problématique de la PNA, il a également pour but de montrer que l’allocation des dépenses médias peut se réaliser sur des bases tangibles de performance pour les médias du hors média. Cet article redéfinit, dans un premier temps, les concepts du média-planning à cette allocation : couverture, répétition, accumulation des contacts, CPM, bêta. Ensuite, à partir de modélisations concrètes sur des données média de Home*Scan de ACNielsen, l’analyse montre les apports de la PNA dans un mix média, apport en couverture, en mémorisation, efficience de ce média en terme de coût .
Expériences de marque : comment favoriser l’immersion du consommateur ?
Authors: Carù Antonella , Cova Bernard
Published: March 2024

Le marketing expérientiel conduit les gestionnaires de marque à faire vivre des brand experiences à leurs consommateurs. Contrairement à ce que les tenants de l’économie de l’expérience ont essayé de leur faire croire, ils ne peuvent pas créer et gérer l’expérience des consommateurs, mais ils peuvent construire des contextes expérientiels de marque dans lesquels le consommateur pourra s’immerger pour avoir accès à une expérience de marque. Pour réaliser cette immersion, il ne leur suffit pas de sur-stimuler les sens et l’imaginaire du consommateur par une mise en scène spectaculaire dans un contexte thématisé, enclavé et sécurisé ; il leur faut également faciliter l’immersion du consommateur dans le contexte expérientiel. Pour cela, ils doivent développer des dispositifs d’accompagnement, d’action collective et d’auto-détermination du consommateur .