Search For Partners Research Articles

Vector-like quarks decaying into singly and doubly charged bosons at LHC

We investigate the production of vector-like quarks with charge 5/3 at the LHC and their subsequent decays into new singly or doubly charged bosons plus a heavy quark (top or bottom). In particular, we explore final states with same-sign di-leptons (electron or muon pairs), with the leptons coming from the decay of the new bosons and, in the case of production of singly charged bosons, from top quarks as well. These processes are predicted by classes of models based on extensions of the gauge group of the Standard Model, such as the 331 Model, where the electroweak symmetry is described by SU(3)L × U(1)X, X being a new abelian charge. For this purpose, a CMS search for vector-like partners with charge 5/3 decaying into Wt is recast to obtain model-independent bounds and projected reaches at future luminosity stages of the LHC. The results are then interpreted as mass bounds for the new particles predicted in the 331 Model and as a constraint on the scale of its spontaneous symmetry breaking. The complete set of model-independent results are provided as recast efficiencies, to allow for reinterpretation in different scenarios.

Mating Market and Dynamics of Union Formation

The paper investigates the relationship between structural partner market constraints and the timing and educational sorting of unions in Germany (1985–2018). We integrate the literature on the effect of the reversed gender gap in education on educational assortative mating, with a focus on mating dynamics and the measurement of the partner market over the life course. We concentrate on two particular educational groups, low-educated men and highly educated women, those with worsening mating prospects and more subject to experience hypogamous unions. Our results show that the local education-specific mating squeeze influences union formation, its timing, and educational sorting. Indeed, for the two groups, the increasing supply of highly educated women in the partner market increases the likelihood of remaining single or establishing an hypogamous union, where she is higher educated than he. In line with search theory, we find the effects of the mating squeeze to become particularly visible after people turn 30 years of age. This is true for the risk of remaining single and forming an hypogamous union. We underline the necessity to study assortative mating and union formation from a dynamic perspective, taking into account changing structural conditions during the partner search process.

The analysis of Turkey’s tendency to converge to the European Union from the perspective of geopolitics

ABSTRACT Geopolitical isolation can be defined as an increase in the degree of deterioration of a country due to a decrease of its systemic relations with other countries. Perceptual isolation emerges from the perception of threat from the neighbours. Turkey is an instance of perceptual isolation since its geographical infrastructures are not satisfactory for developing its relations with its neighbours. In order to overcome this situation, the leaders of Turkey have taken a number of measures among which one can specifically refer to the policy of zero tension with the neighbours as well as the search for strategic partners from beyond the neighbouring countries. Study of Turkey’s convergence to the European Union is the central idea of the current research. The purpose of this study is to answer the question that how the geopolitical isolation of Turkey has affected its attempts to join the European Union. The hypothesis that the intensity of Turkey’s geopolitical isolation, along with other interests, has had an increasing impact on the efforts of Turkish statesmen toward convergence to the European Union and that these two variables are directly proportional to each other will be investigated. This research has been conducted with a historical analytical-explanatory method.

The search for predictable moral partners: Predictability and moral (character) preferences

Across six studies (N = 1988 US residents and 81 traditional people of Papua), participants judged agents acting in sacrificial moral dilemmas. Utilitarian agents, described as opting to sacrifice a single individual for the greater good, were perceived as less predictable and less moral than deontological agents whose inaction resulted in five people being harmed. These effects generalize to a non-Western sample of the Dani people, a traditional indigenous society of Papua, and persist when controlling for homophily and notions of behavioral typicality. Notably, deontological agents are no longer morally preferred when the actions of utilitarian agents are made to seem more predictable. Lastly, we find that peoples' lay theory of predictability is flexible and multi-faceted, but nevertheless understood and used holistically in assessing the moral character of others. On the basis of our findings, we propose that assessments of predictability play an important role when judging the morality of others.

A new biologically inspired global optimization algorithm based on firebug reproductive swarming behaviour

A new biologically inspired derivative-free global optimization algorithm called Firebug Swarm Optimization (FSO) inspired by reproductive swarming behaviour of Firebugs (Pyrrhocoris apterus) is proposed. The search for fit reproductive partners by individual bugs in a swarm of Firebugs can be viewed naturally as a search for optimal solutions in a search space. This work proposes a mathematical model for five different Firebug behaviours most relevant to optimization and uses these behaviours as the basis of a new global optimization algorithm. Performance of the FSO algorithm is compared with 17 popular heuristic algorithms on the Congress of Evolutionary Computation 2013 (CEC 2013) benchmark suite that contains high dimensional multimodal as well as shifted and rotated functions. Statistical analysis based on Wilcoxon Rank-Sum Test indicates that the proposed FSO algorithm outperforms 17 popular state-of-the-art heuristic global optimization algorithms like Guided Sparks Fireworks Algorithm (GFWA), Dynamic Learning PSO (DNLPSO), and Artificial Bee Colony Bollinger Bands (ABCBB) on the CEC 2013 benchmark.

Chemotactic movement of a polarity site enables yeast cells to find their mates

How small eukaryotic cells can interpret dynamic, noisy, and spatially complex chemical gradients to orient growth or movement is poorly understood. We address this question using Saccharomyces cerevisiae, where cells orient polarity up pheromone gradients during mating. Initial orientation is often incorrect, but polarity sites then move around the cortex in a search for partners. We find that this movement is biased by local pheromone gradients across the polarity site: that is, movement of the polarity site is chemotactic. A bottom-up computational model recapitulates this biased movement. The model reveals how even though pheromone-bound receptors do not mimic the shape of external pheromone gradients, nonlinear and stochastic effects combine to generate effective gradient tracking. This mechanism for gradient tracking may be applicable to any cell that searches for a target in a complex chemical landscape.

STATUS AND DIRECTIONS OF IMPROVEMENT OF INFORMATION SUPPORT OF AGRICULTURAL ENTERPRISES

The article clarifies the purpose and objectives of information support for agricultural enterprises, highlights its features and examines its condition. It is established that: mostly managers and specialists are aware of the need for information support of production and business processes, the existence of a direct link between the volume of production of the enterprise and the level of its digitalization. It is noted that most companies use electronic document management technologies, the availability of their own sites, which are almost never used for advertising, partner search and expanding the customer base for the sale of agricultural products.This state of information support for agricultural enterprises causes: constant duplication of information and information flows; the difficulty of quickly finding the necessary information in a timely manner; loss of important information due to lack of automated system control; irrationality of the use of information, which leads to increased material, human and financial costs; growth of labor costs for search, processing, storage of necessary information; impossibility of conducting automated analytical analysis and static reporting. It is substantiated that for improvement of information support in agricultural enterprises and increase of productivity of personnel and convenience of their work in the uniform information architectural environment, it is expedient to carry out modeling and forecasting of business processes with specification of information inquiries, to analyze existence of failures and delays of information flows. and interdependence with other information blocks, develop scenarios for timely and reliable information support for the implementation of all business processes. Improved information support in agricultural enterprises on the basis of a single integrated information architectural environment with a structural delimitation of telecommunications access will provide a range of competitive advantages.

Long-term business relationships, bargaining and monetary policy

We analyze a monetary economy where firms trading intermediate inputs engage in long-term business-to-business (B2B) relationships. We focus on features such as search for business partners, price negotiation and productivity levels that can make it convenient to separate a relationship. These features are introduced into an otherwise standard New Keynesian (NK) model for policy analysis, where the central bank adopts a Taylor rule. As a result of these features of the B2B relationships, final price and intermediate price inflation are generally not aligned, which is realistic but overlooked by the standard NK model. Consequently, we can investigate the extent to which the allocative role of the intermediate price contributes to the transmission of monetary policy shocks. We find that an allocative role arises from the endogenous separations of the relationships. However, this role is smaller than that in the standard NK model, leading to a comparable but micro-founded alternative explanation of the U.S. business cycle moments.

Facilitating the Search for Partners on Matching Platforms

Two-sided matching platforms can control and optimize over many aspects of the search for partners. To understand how matching platforms should be designed, we introduce a dynamic two-sided search model with strategic agents who must bear a cost to discover their value for each potential partner and can do so nonsimultaneously. We characterize evolutionarily stable stationary equilibria and find that, in many settings, the platform can mitigate wasted search effort by imposing suitable restrictions on agents. In unbalanced markets, the platform should force the short side of the market to initiate contact with potential partners, by disallowing the long side from doing so. This allows the agents on the long side to exercise more choice in equilibrium. When agents are vertically differentiated, the platform can significantly improve welfare even in the limit of vanishing screening costs by forcing the shorter side of the market to propose and by hiding information about the quality of potential partners. Furthermore, a Pareto improvement in welfare is possible in this limit. This paper was accepted by Baris Ata, stochastic models and simulation.

Alpha-Helical Protein KfrC Acts as a Switch between the Lateral and Vertical Modes of Dissemination of Broad-Host-Range RA3 Plasmid from IncU (IncP-6) Incompatibility Group.

KfrC proteins are encoded by the conjugative broad-host-range plasmids that also encode alpha-helical filament-forming KfrA proteins as exemplified by the RA3 plasmid from the IncU incompatibility group. The RA3 variants impaired in kfrA, kfrC, or both affected the host’s growth and demonstrated the altered stability in a species-specific manner. In a search for partners of the alpha-helical KfrC protein, the host’s membrane proteins and four RA3-encoded proteins were found, including the filamentous KfrA protein, segrosome protein KorB, and the T4SS proteins, the coupling protein VirD4 and ATPase VirB4. The C-terminal, 112-residue dimerization domain of KfrC was involved in the interactions with KorB, the master player of the active partition, and VirD4, a key component of the conjugative transfer process. In Pseudomonas putida, but not in Escherichia coli, the lack of KfrC decreased the stability but improved the transfer ability. We showed that KfrC and KfrA were involved in the plasmid maintenance and conjugative transfer and that KfrC may play a species-dependent role of a switch between vertical and horizontal modes of RA3 spreading.

A meet-up of two second messengers: the c-di-AMP receptor DarB controls (p)ppGpp synthesis in Bacillus subtilis

Many bacteria use cyclic di-AMP as a second messenger to control potassium and osmotic homeostasis. In Bacillus subtilis, several c-di-AMP binding proteins and RNA molecules have been identified. Most of these targets play a role in controlling potassium uptake and export. In addition, c-di-AMP binds to two conserved target proteins of unknown function, DarA and DarB, that exclusively consist of the c-di-AMP binding domain. Here, we investigate the function of the c-di-AMP-binding protein DarB in B. subtilis, which consists of two cystathionine-beta synthase (CBS) domains. We use an unbiased search for DarB interaction partners and identify the (p)ppGpp synthetase/hydrolase Rel as a major interaction partner of DarB. (p)ppGpp is another second messenger that is formed upon amino acid starvation and under other stress conditions to stop translation and active metabolism. The interaction between DarB and Rel only takes place if the bacteria grow at very low potassium concentrations and intracellular levels of c-di-AMP are low. We show that c-di-AMP inhibits the binding of DarB to Rel and the DarB–Rel interaction results in the Rel-dependent accumulation of pppGpp. These results link potassium and c-di-AMP signaling to the stringent response and thus to the global control of cellular physiology.

A bibliometric analysis on path planning methods for mobile robots published in scientific citation index-expanded indexed journals between 2000-2020

Robots are currently replacing humans in different tasks in various sectors. Among the vital features desirable in autonomous robots is the capability of navigating safely through a given environment. Robot navigation is a process designed with the ability of avoiding any hitches or obstacles while aiming at a specific predefined position. Many studies have been proposed to find solutions to robot path-planning problems. This paper presents a bibliometric analysis of the relevant publications published from 2000 to 2020. The results show that 5385 articles were published in 1128 journals, hence indicating publication diversity. There is a steady rise in the yearly publication output, reflecting an increase in global research interest in the topic. In general, this research provides useful insight into path-planning research so that researchers in this area can better recognize the relevant research study topics and search for the appropriate research partners.

Search for squarks and gluinos in final states with jets and missing transverse momentum using 139 fb\u22121 of sqrt{s} = 13 TeV pp collision data with the ATLAS detector

A search for the supersymmetric partners of quarks and gluons (squarks and gluinos) in final states containing jets and missing transverse momentum, but no electrons or muons, is presented. The data used in this search were recorded by the ATLAS experiment in proton-proton collisions at a centre-of-mass energy of sqrt{s} = 13 TeV during Run 2 of the Large Hadron Collider, corresponding to an integrated luminosity of 139 fb−1. The results are interpreted in the context of various R-parity-conserving models where squarks and gluinos are produced in pairs or in association and a neutralino is the lightest supersymmetric particle. An exclusion limit at the 95% confidence level on the mass of the gluino is set at 2.30 TeV for a simplified model containing only a gluino and the lightest neutralino, assuming the latter is massless. For a simplified model involving the strong production of mass-degenerate first- and second-generation squarks, squark masses below 1.85 TeV are excluded if the lightest neutralino is massless. These limits extend substantially beyond the region of supersymmetric parameter space excluded previously by similar searches with the ATLAS detector.

Movement distances for four small mammals in two Atlantic forests fragments, Southern Brazil

Animal movement has an important role in individual performance, species reproduction, population demography, and conservation, especially in fragmented landscapes. The distance moved by an individual may vary depending on individual needs, such as the search for food resources and sexual partners. Here we investigated which factors affect the distances between successive captures (hereafter DSC) for Akodon montensis, Oligoryzomys nigripes, Sooretamys angouya, and Didelphis albiventris. This study was conducted from April 2015 to October 2016 in two fragments in the south of Atlantic Forest biome through capture, mark and recapture technique. DSC was analyzed using Generalized Linear Models with Poisson distribution where the independent variables were sex, whether the animal was active or not in terms of reproduction, body weight, and climatic season. The mean DSC was greater for D. albiventris (44.6 ± 28.8 m), followed by S. angouya (31.9 ± 25.7 m), O. nigripes (25.8 ± 22.5 m) and A. montensis (18.9 ± 22.0 m). Males of all species moved larger DSC than females. Considering the rodents, reproductive animals also moved larger DSC than non-reproductive animals. Sex may have masked the effect of body weight, as males tend to be larger than females. Climatic effects were tested for A. montensis and O. nigripes, however, with diverse effects.

КОНЦЕПТУАЛЬНЫЕ ОСНОВЫ И МЕХАНИЗМЫ ДОСТУПНОСТИ ДОПОЛНИТЕЛЬНОГО ОБРАЗОВАНИЯ СЕЛЬСКИХ ДЕТЕЙ

The article presents the results of the study on features of additional education organization and its accessibility in rural areas, possibilities of using the resources of rural society are considered. The work was carried out within the framework of the regional innovation project «Development of mechanisms for targeted support of students living in rural areas in obtaining affordable additional education» (order of the Department of Education of the Yaroslavl Region No. 135/2/01 04 of 10.04.2019). The purpose of the study was based on the identified features associated with the use of free time by rural children, their employment with additional education, motivation and social order for additional educational services and the peculiarities of the influence of individual factors on additional education, to determine and test mechanisms for targeted support of rural children in obtaining affordable additional education. Research methods was study and generalization of the mass experience of additional education of rural children, a survey of schoolchildren, parents, teachers, focus groups, experimental work, expert assessment. Based on the socio-cultural approach and taking into account the peculiarities of the organization of this sphere of education in rural areas, the article presents the following mechanisms of targeted support for rural children: search for social partners based on a social order, «mobile teacher», «mobile children's group (child)», involvement of socially-oriented commercial organizations providing educational services, interaction with vocational education institutions, remote form of additional education for children. Rural schools are usually small, so the application of any of the proposed mechanisms can be targeted, taking into account the opinions and capabilities of students and their parents. References are given to the experience of implementing mechanisms for providing additional education.

Brazilian Protocol for Sexually Transmitted Infections 2020: acquired syphilis

The Clinical Protocol and Therapeutic Guidelines for Comprehensive Care of People with Sexually Transmitted Infections, published by the Brazilian Ministry of Health in 2020, includes updates concerning acquired syphilis. The document comprises rapid test use, safety and efficacy of benzathine benzylpenicillin, case follow-up, neurosyphilis clinical and laboratory management, approaching sex partners, assistance and monitoring of diagnosed pregnant women, and syphilis and HIV co-infection specificities, as well as a case notification summary. Health managers and professionals must be continuously trained so as to integrate care and surveillance, to strengthen actions for efficient control of syphilis, to broaden the search for sex partners, and to expand access of most vulnerable populations to health services.

Достижение личностных результатов студентами педагогического колледжа в результате сотрудничества с детским технопарком «Кванториум»

We consider the connection of the personal results of pedagogical college students with the universal competencies provided by the Federal State Educational Standard. The personal results are an integral part of the universal competencies. Educational work should be aimed at the formation and development of the intellectual, cultural, creative, moral personality of a student, a future specialist combining professional knowledge and skills, high moral qualities, possessing a legal and communicative culture, an active civic position. A special approach to the use of new forms of organization of educational work, as well as to the search for new social partners is necessary. The experience of cooperation of the Tambov Pedagogical College with the organization of additional education Hi-Tech Park for Children “Quantorium” is described. We analyze the application of innovative ways of organizing leisure time for pedagogical college students through personal growth trainings, master classes, projects, and meetings with interesting people, competitions that allow students to effectively achieve personal results outside of college, using new platforms and through the involvement of other specialists.

Primorye State Art Gallery as the center of the Far East art space

The article is devoted to the last decade of exposition and exhibition activity of the Primorye State Art Gallery. The focus is on art projects that have become the result of increasingly strong inter-Museum contacts: “guest”, exchange and joint exhibitions. They are born as a result of searches for interested partners and sponsors, agreements with the heads of various institutions at forums and seminars. The patronage of Central museums is of great importance: the State Hermitage Museum, the state Tretyakov Gallery, the State Russian Museum, and others. The Primorye State Art Gallery organizes international exhibitions in order to promote Far Eastern fine art in the countries of the Asia-Pacific region, to open new names for these territories in the artistic sphere of the region and the district. The experience of the the Primorye State Art Gallery can be useful for museum workers in the Far Eastern and Siberian regions, and the information obtained can become an incentive for establishing new inter-museum contacts. The Primorye State Art Gallery is a relatively young museum formed in 1966 on the basis of the art collection of the Primorsky Regional Museum of Local Lore (now the Museum of the History of the Far East named after V. K. Arsenyev). Over five and a half decades, the gallery's funds have grown immeasurably, and it has become a methodological center for art museums in the Far East: the State Hermitage Museum has held six master classes on restoration and conservation of works of art in the gallery, and specialists from the State Russian Museum have been conducting scientific and practical seminars for the Far Eastern Federal district in recent years here. Статья посвящена последнему десятилетию экспозиционно-выставочной деятельности Приморской государственной картинной галереи. В центре внимания — арт-проекты, ставшие результатом все более крепнущих межмузейных контактов: «гостевые», обменные и совместные выставки. Рождаются они как итог поисков заинтересованных партнеров и спонсоров, договоренностей с руководителями различных институций на форумах и семинарах. Большое значение имеет шефское внимание центральных музеев: Государственного Эрмитажа, Государственной Третьяковской галереи, Государственного Русского музея и других. Международные выставки Приморская картинная галерея организует с целью продвижения дальневосточного изобразительного искусства в страны Азиатско-Тихоокеанского региона, открытия для этих территорий новых имен в художественной сфере края и округа. Опыт Приморской государственной картинной галереи может быть полезным для музейных работников Дальневосточного и Сибирского регионов, а полученная информация — стать побудительным импульсом для установления новых межмузейных контактов. Приморская государственная картинная галерея — сравнительно молодой музей, образовавшийся в 1966 году на основе художественной коллекции Приморского краевого краеведческого музея им. В.К. Арсеньева (ныне Музей истории Дальнего Востока им. В.К. Арсеньева). За пять с половиной десятилетий неизмеримо выросли фонды галереи, она превратилась в методический центр для художественных музеев Дальнего Востока: Государственный Эрмитаж провел в стенах картинной галереи Владивостока шесть мастер-классов по реставрации и консервации произведений искусства, специалисты Государственного Русского музея в последние годы выезжают с научно-практическими семинарами для зоны Дальневосточного федерального округа.

X 0(2900) and its heavy quark spin partners in molecular picture * *This work is partly supported by the National Natural Science Foundation of China (NSFC) and the Deutsche Forschungsgemeinschaft (DFG) through the funds provided to the Sino-German Collaborative Research Center “Symmetries and the Emergence of Structure in QCD” (NSFC Grant No. 12070131001 and DFG Grant No. TRR110), Science and

The , recently observed by the LHCb Collaboration in the invariant mass of the process, is the first exotic candidate with four different flavors, beginning a new era for the hadron community. Under the assumption that the is a hadronic molecule, we extracted the whole heavy-quark symmetry multiplet formed by the doublet and the meson. For the bound state case, there would be two additional hadronic molecules associated with the and channels, as well as one additional molecule. In the light quark limit, they are and below the and thresholds, respectively, which are unambiguously fixed by the mass position of the . For the virtual state case, there would be one additional hadronic molecule, strongly coupled to the channel, and one additional molecule. Searching for these heavy quark spin partners will help shed light on the nature of the .

INNOVATIVE MARKETING COMPLEX: ITS COMPONENTS, METHODS AND TOOLS

The article examines the state of innovation system in Ukraine. This state is defined as a crisis and such that it does not correspond to the current level in countries that have taken the path of innovative development. Low indicators were revealed that characterize innovative activity in industry, the state of which directly affects the rates of development in almost all sectors of the economy. It has been established that in order to develop an enterprise, increase its competitiveness and achieve leadership positions, it is necessary to observe two areas of activity - to develop and implement innovations and implement marketing complex activities aimed at the commercialization of innovations. The main factors that significantly affect the decision of enterprises to develop and implement innovative projects, as well as those factors that hinder the implementation of innovative activities have been determined. An approach to the formation of an innovative marketing complex is proposed. The approaches and positions to the marketing of innovations at the enterprise are determined, their influence on the efficiency of the enterprise is indicated. Marketing in the management of enterprise development is characterized. A systematic analysis of approaches to determining the role and place of marketing in the innovation sphere has been carried out. The practice of using marketing tools and methods in the domestic enterprises innovation activities is analyzed. The characteristics that determine the specifics of modern innovation marketing tools are determined. A complex of innovative marketing is proposed. The ways of financing innovative activity of Ukrainian enterprises are investigated. The authors refer to the search for partners for innovation activities (suppliers, intermediaries, consumers, financial institutions, etc.) as an important aspect of increasing the effectiveness of innovative marketing. The ways of further development of marketing innovations’ tools and methods and their practical application are outlined.