Search

Tensegrity continuum robots (TCRs) are an emerging class of flexible continuum robots that employ the tensegrity concept to achieve a natural balance of compliance and strength. The dynamics of a TCR with slack cables is a high-dimensional non-smooth nonlinear system. Motion control of such a system is challenging, especially when the TCR is placed horizontally. In this work, a differential–algebraic equations (DAEs) model-based instantaneous optimal control (IOC) approach for the tip's position and orientation collaborative tracking of a horizontal TCR with slack stiffening cables is proposed. Based on the complementarity theory and the Fischer–Burmeister function, the non-smooth problem of cable relaxation can be described as a continuous differentiable algebraic equation. Then, by combining the dynamic differential equations, a DAEs model of the TCR with slack cables can be obtained. Subsequently, the original continuous tip tracking problem is approximated to a series of IOC problems at each discrete time slot. Finally, considering the control input saturation constraints, a suboptimal control law can be obtained just by solving a small-scale optimization problem. The proposed IOC approach provides a novel and unified control framework to deal with the tip tracking problem of the horizontal TCRs, and the non-smooth property of cable relaxation is naturally involved in the IOC controller. Numerical experiments on the tip tracking of a horizontal TCR are conducted to demonstrate the effectiveness and advantages of the proposed IOC method. [ABSTRACT FROM AUTHOR]

To be effective, a biocontrol agent must survive and persist in the same habitat as the target species and reduce target population growth. When multiple biocontrol agents are used against a single invasive species, they may each perform better under a subset of the habitat in which the target lives. This complementarity allows for a more consistent level of control and a higher resilience to environmental variability. Two species that feed on the same plant tissues would compete, but niche partitioning in the native range may be replicated when both species are introduced to the invasive range. When biocontrol agents are released, they may self‐sort to perform best in their respective niches. We hypothesized that two biocontrol agents—Scotch broom seed beetle, Bruchidius villosus (Fabricius) (Coleoptera: Chrysomelidae) and Scotch broom seed weevil, Exapion fuscirostre (Fabricius) (Coleoptera: Brentidae)—that both feed on seeds of the invasive legume Scotch broom, Cytisus scoparius L. Link (Fabaceae), would be impacted differently by different weather conditions and plant traits, and would show different success rates at field sites with different conditions. We used a 5‐year study to reveal that the two biocontrol agents are not uniformly distributed in the field and that weather and plant factors influence their success. We confirmed that weather conditions of the previous year influenced biocontrol agent attack rate and found that weather patterns at a field site may predict the impact of each biocontrol agent. [ABSTRACT FROM AUTHOR]

Entrepreneurs increasingly tap into both spatial and digital resource environments to mobilize critical resources in support of new ventures. Yet, we know surprisingly little about how entrepreneurs make joint use of these environments. Linking the recent debate on spatial and digital affordances to the resource mobilization literature, this study examines how entrepreneurs mobilize critical resources from local ecosystems and the crowdfunding platform Kickstarter in complementary ways. We discuss two strategies of resource mobilization. (1) The circular strategy, which is mainly applied by social ventures, leverages community narratives and support for crowdfunding campaigns to strengthen and expand the very community support the campaigns are based on. (2) The cumulative strategy, which is mainly applied by commercial high-tech ventures, mobilizes the symbolic value of local institutional ties to attract crowdfunding backers and uses crowdfunding success to attract new resource-holders in local ecosystems. Our findings contribute to research on entrepreneurial resource mobilization and our understanding of the interplay of spatial and digital affordances. [ABSTRACT FROM AUTHOR]

We use administrative data ($N = 61,553$ N = 61 , 553) on Finnish individuals who started university studies between 1991 and 2015 to explore whether mathematics and Finnish scores in upper secondary school matriculation examinations are related to university performance. We find that mathematical and verbal skills are complementary in predicting university course completions and grades. [ABSTRACT FROM AUTHOR]

Online reviews that consist of texts and images are an essential source of information for alleviating data sparsity in recommender system studies. Although texts and images provide different types of information, they can provide complementary or substitutive advantages. However, most studies are limited in introducing the complementary effect between texts and images in the recommender systems. Specifically, they have overlooked the informational value of images and proposed recommender systems solely based on textual representations. To address this research gap, this study proposes a novel recommender model that captures the dependence between texts and images. This study uses the RoBERTa and VGG-16 models to extract textual and visual information from online reviews and applies a co-attention mechanism to capture the complementarity between the two modalities. Extensive experiments were conducted using Amazon datasets, confirming the superiority of the proposed model. Our findings suggest that the complementarity of texts and images is crucial for enhancing recommendation accuracy and performance. [ABSTRACT FROM AUTHOR]

Introduction: Increasing intraspecific genetic variation (IV) has been identified as a potential factor to improve productivity and stabilise botanical composition in plant communities. In grasslands systems, this could offer a lever to manage uncertainties of production and variability in the harvested species balance. However, little is known about the conditions to favour IV impact and the mechanisms at play. Methods: The dependency of IV impact on traits holding it and environmental stressors were analysed using a spatially-explicit individual-based model (IBM) of grassland communities. Sixty-three binary mixtures were defined to reflect a gradient of functional divergence between species regarding light and nitrogen (N) acquisition. The growth and dynamics of these communities were simulated for one year with three possible IV levels under two environments contrasting in terms of soil N fertility. Results and discussion: The model predicted a positive impact of moderate and high IV levels on maintaining the species balance over time, but no marked effects on mixture productivity. This stabilising effect increased at higher IV levels and under low soil N fertility. It also tended to be more pronounced in communities with intermediate functional divergence offering a significant overlap between light and N acquisition parameter values of both species. The major traits involved in the plant response to neighbours differed depending on the most contested resource, as indicated by the within-population selection of individuals with favourable N-related parameters under low N and light-related parameters under high N environments. The hypothesis that IV favours a complementarity of resource use between species was not supported. Rather, a greater spatial heterogeneity in competitive interactions was demonstrated, leading to a higher probability of growth and survival for individuals within the subordinate species. These results highlight the potential usefulness of IV to design forage mixtures with improved stability and resilience. [ABSTRACT FROM AUTHOR]

We draw on complementarity and performance landscape perspectives to reason why and how supply chains should shift from a rugged to a smooth performance landscape. We analysed the organisation of supply chain-oriented firms by conceptualising them as a set of interdependent elements whose complementarity interaction generates desirable performance outcomes. We collected perceptual data from 139 firms. After establishing the psychometric properties of the measures, we employed two econometric methods that enabled us to examine the complementary interaction using performance differences among five SCM practices. Overall, we find empirical evidence for complementarity among the SCM practices. We also find interesting results from the two econometric approaches allowing us to articulate the distinction between practice contextuality and interaction contextuality. Our study offers empirical evidence for supply chain managers to find a promising position in the rugged supply chain performance landscape. In addition, we offer noteworthy managerial insights on managing the supply chain towards a smoother supply chain performance landscape. [ABSTRACT FROM AUTHOR]

Chondritic components such as chondrules and matrix are the key time capsules that can help us understand the evolution and dynamics of the protoplanetary disk from which the Solar System originated. Knowledge of where and how these components formed and to what extent they were transported in the gaseous disk provides major constraints to astrophysical models that investigate planet formation. Here, we explore whether chondrules and matrix are genetically related to each other and formed from single reservoirs per chondrite group or if every chondrite represents a unique proportion of components transported from a small number of formation reservoirs in the disk. These 'static versus dynamic disk' interpretations of cosmochemical data have profound implications for the accretion history of the planets in the Solar System. To fully understand the relationship between chondrules and matrix and their potential "complementarity", we dive into the petrological nature and origin of matrix, the chemical and isotopic compositions of chondrules and matrix and evaluate these data considering the effect of secondary alteration observed in chondrites and the potential complexity of chondrule formation. Even though we, the authors, have used different datasets and arrived at differing interpretations of chondrule-matrix relationships in the past, this review provides clarity on the existing data and has given us new directions towards future research that can resolve the complementarity debate. [ABSTRACT FROM AUTHOR]

This article verifies how regular migrants are inserted into the labour markets of receiving countries. The analysis will be made with reference to the position of neo-classical economists relating to the insertion of immigrants in the labour markets of host countries. Reference will also be made to existing data on the dynamics of the integration of authorized migrants in the labour force of OECD and EU countries. [ABSTRACT FROM AUTHOR]

The prevailing theory on relationship judgments for interaction attributes suggests individuals tend to underestimate a romantic partner's expressions of compassionate love and that such underestimation is beneficial for the relationship. Yet, limited research has incorporated dyadic perspectives to assess how biased perceptions are associated with both partners' outcomes. In two daily studies of couples, we used distinct analytical approaches (Truth and Bias Model; Dyadic Response Surface Analysis) to inform perspectives on how biased perceptions are interrelated and predict relationship satisfaction. Consistent with prior research, people demonstrated an underestimation bias. However, there were differential effects of biased perceptions for actors versus partners: Underestimation predicted lower actor satisfaction but generally higher satisfaction for partners. Furthermore, we find evidence for complementarity effects: partners' directional biases were inversely related, and couples were more satisfied when partners had opposing patterns of directional bias. Findings help integrate theoretical perspectives on the adaptive role of biased relationship perceptions. [ABSTRACT FROM AUTHOR]

The proportion of people living in urban areas is growing globally. Understanding how to manage urban biodiversity, ecosystem functions, and ecosystem services is becoming more important. Biodiversity can increase ecosystem functioning in non‐urban systems. However, few studies have reviewed the relationship between biodiversity and ecosystem functioning in urban areas, which differ in species compositions, abiotic environments, food webs, and turnover rates. We reviewed evidence of biodiversity–ecosystem functioning relationships in urban environments and assessed factors that influence the relationship direction. Based on 70 studies, relationships between biodiversity and ecosystem functioning were more positive than negative in urban areas, especially for pollination and nutrient cycling and retention. Surprisingly, positive and negative relationships between biodiversity and biomass production and storage were equally not statistically different, perhaps due to extensive plant management in urban areas. The number of studies and geographic coverage of our review was still insufficient to provide a general predictive framework for when biodiversity positively impacts ecosystem functioning. We identify gaps and opportunities to improve urban biodiversity–ecosystem functioning research and discuss how our findings can improve urban green space management. [ABSTRACT FROM AUTHOR]

We adapt the Becker et al. (2015) model to study intergenerational educational mobility in Indonesia with a focus on the role of complementarities. We develop an empirical methodology for testing whether parental financial investment is complementary to school quality and parent's education. The empirical analysis is based on two estimating equations derived from the model: a quadratic mobility equation specifying the association between a father's and his children's schooling, and a linear investment equation specifying the optimal financial investment in children's schooling as a function of fathers' schooling. We find that the mobility curve is convex in rural, and linear in urban areas, even though parental education is complementary to financial investment in both locations. School quality is complementary to investment in all rural households but only in educated urban households. It is a substitute in uneducated urban households. Public investment in school quality is expected to improve absolute mobility in most households, but worsen relative mobility. [ABSTRACT FROM AUTHOR]

Long-term research in grassland biodiversity experiments has provided empirical evidence that ecological and evolutionary processes are intertwined in determining both biodiversity–ecosystem functioning (BEF) and biodiversity–stability relationships. Focusing on plant diversity, we hypothesize that multifunctional stability is highest in high-diversity plant communities and that biodiversity–stability relationships increase over time due to a variety of forms of ecological complementarity including the interaction with other biota above and below ground. We introduce the multiple-mechanisms hypothesis of biodiversity–stability relationships suggesting that it is not an individual mechanism that drives long-term biodiversity effects on ecosystem functioning and stability but that several intertwined processes produce increasingly positive ecosystem effects. The following six mechanisms are important. Low-diversity plant communities accumulate more plant antagonists over time (1), and use resources less efficiently and have more open, leaky nutrient cycles (2). Conversely, high-diversity plant communities support a greater diversity and activity of beneficial interaction partners across trophic levels (3); diversify in their traits over time and space, within and across species, to optimize temporal (intra- and interannual) and spatial complementarity (4), create a more stable microclimate (5), and foster higher top-down control of aboveground and belowground herbivores by predators (6). In line with the observation that different species play unique roles in ecosystems that are dynamic and multifaceted, the particular mechanism contributing most to the higher performance and stability of diverse plant communities might differ across ecosystem functions, years, locations, and environmental change scenarios. This indicates "between-context insurance" or "across-context complementarity" of different mechanisms. We introduce examples of experiments that will be conducted to test our hypotheses and which might inspire additional work. [ABSTRACT FROM AUTHOR]

GoShare is an innovative green e-scooter rental service that has gained popularity in Taiwan. Its innovativeness lies in its being an electric green innovation and a widely available scooter rental service. To study consumers’ motivation to adopt an innovation with duality in nature-being a product and service innovation simultaneously. We utilized a two-stage research process: interviews first and followed by an online questionnaire survey effort. Building upon the learning from the interviews, we examined how potential adopters’ (1) environmental consciousness, (2) perceived innovation characteristics, (3) self-image related to the service, and (4) the perceived complementarity of the innovation in question impacts their adoption behavior. Logistic regression analyses were to present the findings. We found mixed support for our hypothesizes developed. [ABSTRACT FROM AUTHOR]

Smart cities are rapidly gaining momentum around the world as new opportunities to shift towards a sustainable urban future. Despite their promising solutions, there is so far little evidence on how smart city initiatives can achieve urban sustainability. This study explores the impact of smartness on urban sustainability by introducing the concept of smart complementarity and investigating whether the systemic governance of smart complementarities has a positive impact on sustainability. To this end, we employ a panel vector autoregression model with panel data for 26 smart cities from 2009 to 2019 to test the complex dynamic relationships between smart city drivers and dimensions of sustainability. Such analysis seems crucial for smart city governance and whether the vision of a smart agenda is compatible with urban sustainability. The findings suggest that while smart city initiatives have improved economic sustainability, they have compromised environmental and social sustainability. This points to the need for a coordinated approach to address the complexity of urban systems and sustainability challenges. [ABSTRACT FROM AUTHOR]

Eco-innovation is a complex activity that requires diverse knowledge and an extensive R&D and technology portfolio. This paper investigates the strategies employed by firms and the extent to which green and non-green R&D can influence eco-innovation. We address two research questions: Is investment in green R&D valuable and sufficient for successful eco-innovation? What types of investment are needed for eco-innovation? Our findings provide a better understanding of the mix of knowledge fields required for eco-innovation. To investigate internal firm R&D strategies we use unique data that allow us to identify the influence of the stocks of green and non-green R&D on eco-innovation and the importance of complementarity among specific R&D strategies and knowledge for eco-innovation. Our findings will be relevant for policymakers and firms, to promote investment in R&D to enable eco-innovation and ensure a quick transition to a green society. [ABSTRACT FROM AUTHOR]

Aim. Objective is to formulate the position of the EAEU in the negotiations on the free trade area with China.Tasks. We determine the potential results of the creation of the China-EAEU free trade area for each country.Methods. The indices of complementarity and trade intensity were calculated, and the benefits to society from the abolition of customs tariffs were calculated using a partial equilibrium trade-policy simulation.Results. The study of supply and demand for excavators showed that the total benefit of consumers (the construction industry) from the abolition of customs duties only slightly exceeds the losses of producers and the government. Based on the complementarity assessment, it was found that the free trade agreement is more beneficial for China than for the EAEU countries — the structure of China’s exports better corresponds to the structure of imports of the EAEU countries. It was revealed that the exports of the EAEU countries to China are not diversified, and the main export goods face minimal tariffs — 0% for crude oil from Russia and Kazakhstan, 3% for potash fertilizers from Belarus, 0% for ores and concentrates of precious metals from Kyrgyzstan, 0% for copper ores and concentrates from Armenia. The EAEU countries may be interested in further liberalization of trade with China due to the intention to export frozen fish, corn, wheat and rice (Russia), tobacco (Kyrgyzstan and Armenia), meat and dairy products (Belarus), and cognac (Armenia).Conclusions. Reduction of duties on the specified goods may be the subject of a preliminary temporary agreement. A free trade zone may be created by finalizing the existing Agreement on Trade and Economic Cooperation between the EAEU and its Member States and the PRC. It is recommended that, in addition to including provisions on the abolition of customs duties, sections on trade in services, investments, and movement of individuals be included.

Long-term research in grassland biodiversity experiments has provided empirical evidence that ecological and evolutionary processes are intertwined in determining both biodiversity–ecosystem functioning (BEF) and biodiversity–stability relationships. Focusing on plant diversity, we hypothesize that multifunctional stability is highest in high-diversity plant communities and that biodiversity–stability relationships increase over time due to a variety of forms of ecological complementarity including the interaction with other biota above and below ground. We introduce the multiple-mechanisms hypothesis of biodiversity–stability relationships suggesting that it is not an individual mechanism that drives long-term biodiversity effects on ecosystem functioning and stability but that several intertwined processes produce increasingly positive ecosystem effects. The following six mechanisms are important. Low-diversity plant communities accumulate more plant antagonists over time (1), and use resources less efficiently and have more open, leaky nutrient cycles (2). Conversely, high-diversity plant communities support a greater diversity and activity of beneficial interaction partners across trophic levels (3); diversify in their traits over time and space, within and across species, to optimize temporal (intra- and interannual) and spatial complementarity (4), create a more stable microclimate (5), and foster higher top-down control of aboveground and belowground herbivores by predators (6). In line with the observation that different species play unique roles in ecosystems that are dynamic and multifaceted, the particular mechanism contributing most to the higher performance and stability of diverse plant communities might differ across ecosystem functions, years, locations, and environmental change scenarios. This indicates “between-context insurance” or “across-context complementarity” of different mechanisms. We introduce examples of experiments that will be conducted to test our hypotheses and which might inspire additional work.

In 1954, Robert Oppenheimer was subjected to what was rightly called "an extraordinary American inquisition" under the name of a security hearing. Despite having served his country so devotedly in heading the atomic bomb project at Los Alamos, he was now publicly humiliated, condemned as a security risk, stripped of his security clearance, and forced to step down from his government consultancies. Those hearings were skewed and manipulated in McCarthyite fashion. But while extremely harmful professionally and personally, the hearings were not Oppenheimer's greatest tragedy. His greatest tragedy was the success of his leadership in the creation of the weapon. His remarkable gifts as a physicist and as a human being were most realized in the building of a weapon that could lead to the destruction of humankind. We should make Oppenheimer's legacy to us the recognition that our only form of what has been called "nuclear ethics" is abolition. [ABSTRACT FROM AUTHOR]

Cloud application programming interface (API) is a software intermediary that enables applications to communicate and transfer information to one another in the cloud. As the number of cloud APIs continues to increase, developers are inundated with a plethora of cloud API choices, so researchers have proposed many cloud API recommendation methods. Existing cloud API recommendation methods can be divided into two types: content-based (CB) cloud API recommendation and collaborative filtering-based (CF) cloud API recommendation. CF methods mainly consider the historical information of cloud APIs invoked by mashups. Generally, CF methods have better recommendation performances on head cloud APIs due to more interaction records, and poor recommendation performances on tail cloud APIs. Meanwhile, CB methods can improve the recommendation performances of tail cloud APIs by leveraging the content information of cloud APIs and mashups, but their overall performances are not as good as those of CF methods. Moreover, traditional cloud API recommendation methods ignore the complementarity relationship between mashups and cloud APIs. To address the above issues, this paper first proposes the complementary function vector (CV) based on tag co-occurrence and graph convolutional networks, in order to characterize the complementarity relationship between cloud APIs and mashups. Then we utilize the attention mechanism to systematically integrate CF, CB, and CV methods, and propose a model named Content and Complementarity enhanced Attentional Collaborative Filtering (CCeACF). Finally, the experimental results show that the proposed approach outperforms the state-of-the-art cloud API recommendation methods, can effectively alleviate the long tail problem in the cloud API ecosystem, and is interpretable. [ABSTRACT FROM AUTHOR]

The rational utilization of the complementarity between new energy sources can smooth out the fluctuation of their power output, and the consideration of complementarity in new energy planning can make the new energy planning layout more rational. Based on this, the paper considers the complementarity of new energy outputs and investigates the optimal planning method of new energy system taking into account the source-load matching. The positive correlation between new energy output and load is utilized to maintain the dynamic balance between new energy output and load. Firstly, based on the idea of source-load matching, an equalization index describing the degree of closeness between the new energy output and the load, and a consistency index describing the degree of positive correlation between the new energy output and the baseline load output are proposed. Then, a multi-region new energy optimization planning model considering the source-load matching is established, and a constraint on the equilibrium degree of the new energy output and the load matching is introduced to ensure the consistency of the change characteristics of the two. Finally, a case study is conducted to analyze the power grids of four regions in the northern part of China. The results show that the new energy optimization planning considering the source-load matching can consider the new energy consumption rate and penetration rate comprehensively, and provide a solution for the new energy planning layout considering the complementarity of new energy output.

Abstract Examples of positive effects of biodiversity on ecosystem functions have kept accumulating in the last two decades, and functional traits are considered suitable tools to explain their underlying mechanisms. However, traits are rarely studied at the scale where these mechanisms (e.g., complementarity) are likely to originate, that is, between two interacting individuals. In an 18-month greenhouse experiment, we investigated how species diversity (i.e., monospecific or heterospecific tree pairs) affects within-individual leaf traits expression and variation and how this effect is modified by soil conditions. While resource addition through phosphorus fertilization partly strengthened the diversity effects, inoculation of soil microbiota (potentially leading to increased resource accessibility) resulted in counter effects. Hence, in contrast to our expectations, we did not find synergistic effects of the two soil treatments, but we found distinct effects on species following an acquisitive or conservative growth strategy. Overall, our study showed that the effect of species diversity on young trees’ adaptability and resource-use strategy needs to be considered alongside soil biotic and abiotic aspects. The influence of soil conditions on species diversity effects is essential to understand mechanisms behind complementarity at the individual level, which ultimately translate to the community scale.

Cooperation in the energy sector, and practically in the field of hydrocarbons, is traditionally and reasonably considered as an important area of multidisciplinary interaction between the Russian Federation and the People's Republic of China. In terms of its substantive forms, the energy dialogue has a multifaceted character, includes cooperation in mineral exploration, production technologies, capacity generation, investment support for relevant projects. Nevertheless, as it was objectively developed in practice, one of the main elements of cooperation turned out to be the supply of hydrocarbons from Russia to China, which has been increasing since the beginning of the century. This situation reflects the natural complementarity of the economic complexes of the two countries, which, in turn, serves as one of the basic foundations for the compatibility of the national interests of the Russian Federation and the People's Republic of China. Paying attention to the circumstances above, the author examines the specific practice of cooperation in the field of hydrocarbon supplies, including the documents signed and the projects already implemented or being discussed. The focus is made on the current situation, when, in the context of large- scale sanctions pressure from the West, the task of reorientation of domestic energy exports to the East, including to China, is being considered systemically important for Russia. Pointing out the existing difficulties, the article contains a conclusion about the overall positive prospects for Russian-Chinese hydrocarbon cooperation.

Complementarity has been traditionally understood in a twofold manner. On the one hand, the principle of complementarity explicates the jurisdiction of the International Criminal Court. On the other hand, it has been conceptualised as the broader principle that governs the functioning of the international criminal justice system built after the entry into force of the Rome Statute. Understood in this sense, complementarity outlines the interplay between different (domestic and international) accountability actors, including national authorities and civil society. This article explores the ways in which the principle of complementarity has been operationalised in Ukraine since 2014, in an attempt to highlight the challenges faced by domestic and international justice actors in the situation of atrocities being committed in an ongoing armed conflict. It puts forward an argument that ad hoc responses introduced in cooperation and coordination with local and international partners—including the civil society—have been prioritised over permanent legislative solutions. These ad hoc responses have the potential to influence the expansion of the complementarity architecture, shape the coordinated accountability approaches and advance positive complementarity for core international crimes in ongoing armed conflicts. [ABSTRACT FROM AUTHOR]

Installing multi-renewable energy (RE) power plants at designated locations, known as RE parks, is a promising solution to address their intermittent power. This research focuses on optimizing RE parks for three scenarios: photovoltaic (PV)-only, wind-only, and hybrid PV-wind, with the aim of generating green hydrogen in locations with different RE potentials. To ensure rapid response to RE fluctuations, a Proton Exchange Membrane (PEM) electrolyzer is employed. Furthermore, this research proposes detailed models for manufacturer-provided wind power curves, electrolyzer efficiency against its operating power, and electrolyzer cost towards its capacity. Two optimization cases are conducted in MATLAB, evaluating the optimum sizes of the plants in minimizing levelized cost of hydrogen (LCOH) using classical discrete combinatorial method and determining the ideal PV-to-wind capacity ratio for operating PEM electrolyzer within hybrid PV-wind parks using particle swarm optimization. Numerical simulations show that wind power-based hydrogen production is more cost-effective than PV-only RE parks. The lowest LCOH, $4.26/kg H 2 , and the highest LCOH, $14.378/kg H 2 , are obtained from wind-only and PV-only configurations, respectively. Both occurred in Adum-Kirkeby, Denmark, as it has highest average wind speed and lowest irradiance level. Notably, LCOH is reduced with the hybrid PV-wind configuration. The results suggest the optimum PV-to-wind capacity ratio is 65:35 on average and indicate that LCOH is more sensitive to electrolyzer's cost than to electricity tariff variation. This study highlights two important factors, i.e., selecting the suitable location based on the available RE resources and determining the optimum size ratio between the plants within the RE park. • Mathematical modelling of electrolyzer's cost and efficiency. • Investigation of PV and wind power complementarity in various locations. • Planning optimization of renewable energy park for green hydrogen production. • Calculation of electrolyzer's full load hours and levelized cost of green hydrogen. • Determination of the optimum ratio of PV to wind power size using stochastic method. [ABSTRACT FROM AUTHOR]

Agricultural trade is the foundation of world trade and an important link in economic and trade relations between countries or regions. Exploring the competitiveness and complementarity of the agricultural trade between China and the Association of Southeast Asian Nations, or ASEAN, could provide a theoretical basis for tapping the growth potential of the agricultural trade between China and ASEAN and expanding the trade relationship. According to the theory of comparative advantage, trade complementarity theory, and intra-industry trade theory, and based on UN Comtrade data from 2013 to 2022, this study uses the Regional Revealed Comparative Advantage Index, the Trade Complementarity Index, and the Intra-Industry Trade Index to measure the competitiveness, complementarity, and intra-industry trade level of China–ASEAN agricultural trade, including HS01-24 commodities. The results show that the agricultural trade between China and ASEAN is both competitive and complementary. The competitiveness of China's agricultural exports to ASEAN is greater than that of ASEAN's agricultural exports to China, and the complementarity of the former is less than that of the latter. Both sides have their own comparative advantage products, and there is also a strong competitive relationship in some agricultural product fields. The bilateral agricultural trade is mainly intra-industry trade, and the level is relatively high, while some strongly competitive agricultural products urgently need to transform from inter-industry to intra-industry trade. China and ASEAN should participate in bilateral trade based on the comparative advantages of their own agricultural products; ASEAN should improve the quality of agricultural products to enhance international competitiveness; China should tap into the market demand for ASEAN agricultural products to enhance the complementarity of its agricultural exports to ASEAN; and the two sides should formulate different policies for different types of agricultural products. [ABSTRACT FROM AUTHOR]

At present, China regards philanthropy as an important component of social security, social governance, and the third distribution of resources. Structural changes in government expenditure can drive the adjustment of social resources; therefore, it is fundamental to investigate the macroeconomic transmission effect of government expenditure on the development of the philanthropic sector in order to promote the sustainable development of philanthropy and ensure the fairness and justice of social distribution. The results of a regression analysis on provincial panel data from 2007 to 2020 indicated the following: (1) Government expenditure exhibits crowding-out effects on various dimensions of the philanthropic sector. (2) In terms of regional development disparities, government guidance shows crowding-out effects on the development of philanthropy in the eastern and central regions; meanwhile, it demonstrates complementary effects on the dimensions of charitable donations and the number of social organizations in the western region. (3) Furthermore, in terms of the regional distribution of social organizations by industry, government guidance in the eastern region exhibits crowding-out effects on the numbers of social organizations in the fields of science and technology, education, culture, health, and sports; meanwhile, in the western region, it shows complementary effects. Additionally, in the central region, it shows a complementary effect only in the cultural sector, with crowding-out effects in other industries. Therefore, greater flexibility should be granted to the philanthropic sector, in which the construction of hub-type philanthropic organizations and the creation of regional industry cooperation platforms promote the relatively balanced development of philanthropy. [ABSTRACT FROM AUTHOR]

The present paper seeks to conceptualise the notion of complementarity with the help of rail-based commodity flow data in one of the most prominent railway towns in India i.e. PanditDeenDayalUpadhyaya Nagar (Mughal Sarai). Referring to the theoretical notion of 'complementarity' and a modified form of 'gravity model' from the 'Family of Spatial Interaction Models', this research puts an intensive discussion forward on the existing nature of spatial interaction of PanditDeenDayalUpadhyaya Nagar (Mughal Sarai) with its complementary areas and a comparison of these areas in terms of their relative complementarity with the town concerned. The resultant outcome in the form of a Complementarity Index, portrays a different, if not entirely contradictory picture from the crude values of material shipments to PanditDeenDayalUpadhyaya Nagar (Mughal Sarai). This analysis thus well-indicates that merely supplying greater amount of commodities of any kind does not necessarily reflect greater complementarity and vice versa. Therefore, a more comprehensive analysis of commodity flows is imperative to have a deeper insight into the notion of spatial interaction. [ABSTRACT FROM AUTHOR]

Our primary objectives in this study were to translate and provide psychometric support for the Coach Athlete Relationship Questionnaire (CART-Q) Portuguese version, assess its invariance across sex, and explore its nomological validity in relation to enjoyment. Our sample participants were 470 athletes (226 females, 244 males) aged between 16 to 39 years from various individual and team sports. We found that the translated Portuguese version of the CART-Q exhibited satisfactory test-retest reliability and can serve as a reliable tool for evaluating the core constructs of the coach-athlete relationship – closeness, commitment, and complementarity. Moreover, this instrument showed evidence of nomological validity through significant positive correlations between its underlying factors and athletes' enjoyment with their sport. The proposed model for explaining item variance was also found to be invariant between male and female respondents. We recommend further use of this instrument in research and practical applications. [ABSTRACT FROM AUTHOR]

The combined effect of shape and electrostatic complementarities (Sc, EC) at the interface of the interacting protein partners (PPI) serves as the physical basis for such associations and is a strong determinant of their binding energetics. EnCPdock (https://www.scinetmol.in/EnCPdock/) presents a comprehensive web platform for the direct conjoint comparative analyses of complementarity and binding energetics in PPIs. It elegantly interlinks the dual nature of local (Sc) and nonlocal complementarity (EC) in PPIs using the complementarity plot. It further derives an AI-based ΔGbinding with a prediction accuracy comparable to the state of the art. This book chapter presents a practical manual to conceptualize and implement EnCPdock with its various features and functionalities, collectively having the potential to serve as a valuable protein engineering tool in the design of novel protein interfaces. [ABSTRACT FROM AUTHOR]

One of the justifications for promoting tourism development is the capacity that it has to generate spillover effects on traditional economic activities. However, the strength of these spillover effects depends, largely, on the complementary or competitive nature of the traditional sector with respect to the resources used by tourism. Using time series analysis techniques, this paper examines the relationship existing between tourism development and the local fisheries sector. The results suggest that fisheries have been benefiting from growth in tourism, not so much in terms of an increase in the volume of catches but rather due to an increase in their value. [ABSTRACT FROM AUTHOR]

Examples of positive effects of biodiversity on ecosystem functions have kept accumulating in the last two decades, and functional traits are considered suitable tools to explain their underlying mechanisms. However, traits are rarely studied at the scale where these mechanisms (e.g., complementarity) are likely to originate, that is, between two interacting individuals. In an 18-month greenhouse experiment, we investigated how species diversity (i.e., monospecific or heterospecific tree pairs) affects within-individual leaf traits expression and variation and how this effect is modified by soil conditions. While resource addition through phosphorus fertilization partly strengthened the diversity effects, inoculation of soil microbiota (potentially leading to increased resource accessibility) resulted in counter effects. Hence, in contrast to our expectations, we did not find synergistic effects of the two soil treatments, but we found distinct effects on species following an acquisitive or conservative growth strategy. Overall, our study showed that the effect of species diversity on young trees’ adaptability and resource-use strategy needs to be considered alongside soil biotic and abiotic aspects. The influence of soil conditions on species diversity effects is essential to understand mechanisms behind complementarity at the individual level, which ultimately translate to the community scale. [ABSTRACT FROM AUTHOR]

Copyright of Electric Power Engineering Technology is the property of Editorial Department of Electric Power Engineering Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The oil and gas trade is one of the main ways to promote regional economic development by improving the effectiveness of resource allocation. While regional energy cooperation could lead to growth in the energy trade, blind investment will reduce effective yields. Kazakhstan and China maintain a stable oil and gas trade, but resource exports to China are not growing as expected. The aim of this research is to analyze the competitiveness and complementarity of Kazakhstan and China in the oil and gas trade, as well as the main factors affecting the oil and gas trade between Kazakhstan and China. By creating a linear regression equation to analyze the gravity model of the oil and gas trade between Kazakhstan and China, it was revealed that a 1% growth of the gross domestic product in both countries would lead to a 1.471% increase in the oil and gas trade. However, an increase in oil and gas production in Kazakhstan will not contribute to the expansion of the oil and gas trade with China. Kazakhstan and China could improve their oil and gas trade by strengthening financial cooperation, improving energy efficiency, increasing investment in infrastructure such as oil refineries and pipelines, and developing new oil and gas fields in Kazakhstan. [ABSTRACT FROM AUTHOR]

This document explores the complementarity between the Digital Markets Act (DMA) and the antitrust rules in the European Union. It discusses how the European Commission and national competition authorities have the choice to enforce market conduct by designated gatekeepers either under the DMA or as an abuse of dominance under Article 102 TFEU. However, there is a risk of duplication of enforcement actions, which can lead to inefficiency or under-enforcement. The document emphasizes the importance of coordination and the ne bis in idem principle in parallel proceedings. Overall, while the DMA and antitrust rules are seen as complementary, their application and coordination will need to be tested in practice. [Extracted from the article]

Over the past decade, significant advancements have been made in low-light image enhancement (LLIE) methods due to the robust capabilities of deep learning in non-linear mapping, feature extraction, and representation. However, the pursuit of a universally superior method that consistently outperforms others across diverse scenarios remains challenging. This challenge primarily arises from the inherent data bias in deep learning-based approaches, stemming from disparities in image statistical distributions between training and testing datasets. To tackle this problem, we propose an unsupervised weight map generation network aimed at effectively integrating pre-enhanced images generated from carefully selected complementary LLIE methods. Our ultimate goal is to enhance the overall enhancement performance by leveraging these pre-enhanced images, therewith culminating the enhancement workflow in a dual-stage execution paradigm. To be more specific, in the preprocessing stage, we initially employ two distinct LLIE methods, namely Night and PairLIE, chosen specifically for their complementary enhancement characteristics, to process the given input low-light image. The resultant outputs, termed pre-enhanced images, serve as dual target images for fusion in the subsequent image fusion stage. Subsequently, at the fusion stage, we utilize an unsupervised UNet architecture to determine the optimal pixel-level weight maps for merging the pre-enhanced images. This process is adeptly directed by a specially formulated loss function in conjunction with the no-reference image quality algorithm, namely the naturalness image quality evaluator (NIQE). Finally, based on a mixed weighting mechanism that combines generated pixel-level local weights with image-level global empirical weights, the pre-enhanced images are fused to produce the final enhanced image. Our experimental findings demonstrate exceptional performance across a range of datasets, surpassing various state-of-the-art methods, including two pre-enhancement methods, involved in the comparison. This outstanding performance is attributed to the harmonious integration of diverse LLIE methods, which yields robust and high-quality enhancement outcomes across various scenarios. Furthermore, our approach exhibits scalability and adaptability, ensuring compatibility with future advancements in enhancement technologies while maintaining superior performance in this rapidly evolving field. [ABSTRACT FROM AUTHOR]

Quantum coherence constitutes a foundational characteristic of quantum mechanics and is integral to emerging quantum resource theories. However, quantum coherence is severely restricted by environmental noise in general quantum processing, indicated by the loss of information of a quantum system. Such processing can be described by the trade-offs between the coherence and the mixedness. Based on the l 2 norm coherence, conditional von Neumann entropy and Wigner–Yanase skew information, we derive basis-independent constraints on the attainable quantum coherence imposed by the mixedness of a quantum state, which generalize the prior basis-dependent relations, provide fundamental insights into the latent coherence resources present within arbitrary quantum systems that undergo decoherence and quantify the inherent limits on extractable coherence imposed by environmental noise. [ABSTRACT FROM AUTHOR]

Over 160 years after Darwin and 70 years after the discovery of DNA, two fundamental questions of biology remain unanswered: What differentiates the living from the nonliving? How can mechanistic and finalistic or holistic biology be unified? Niels Bohr introduced a concept of complementarity in quantum physics and based on the paradox of light as a simultaneous wave and particle, conjectured that a similar concept might exist in biology that would solve the paradox of life originating from the nonliving. Bohr proposed that two mutually exclusive-independent observations may be necessary to explain a phenomenon and provided support to Immanuel Kant's idea that the "purposive" behaviour of organisms could only be explained in teleological terms and that mechanical and teleological approaches were necessary and complementary to explain biology. We present a concept of complementarity whereby biochemical pathways or cellular channels for the flow of information are simultaneously complex and redundant and complexity and redundancy complement each other. The postulates of biological complementarity are that (1) it was an essential condition in the origin of life; (2) it provided physiological flexibility that allowed organisms to mount self-protection response and complexity to evolve in the face of deleterious mutations before the evolution of bi-parental sex; (3) it laid the foundation for the evolution of a choice of response when confronted with threat; and (4) it applies to all levels of biological organizations and, thus, can serve as a basis for the unification of mechanistic and holistic biology. It is proposed that teleology is simultaneously constitutive and heuristic: constitutive because organisms' "purposive" behaviours are adaptive and are grounded in mechanism (complexity and redundancy), and heuristic because with our finite cognition and our goal-oriented (humans alone are aware of "tomorrow") and anthropomorphic pre-disposition, teleology will remain useful as a guide to our making sense of the world, even how to ask a meaningful question. [ABSTRACT FROM AUTHOR]

Background and aims: The introduction of ley in cropping systems can provide multiple services, including high quality forage production and C and N inputs into arable soils. Little is known about the dynamics of these services in degrading grassland and the extent to which trade-offs regarding the use of fixed N for either forage production or as a source of N in the rotation can be found. Methods: A six-year field experiment compared the performance of an alfalfa-tall fescue (A-FE) mixture versus the single species alone (A, FE) in terms of forage production, forage quality and root biomass available as residues for the following crop. N mineralisation potential was then simulated for different grassland destruction scenarios using the STICS model. Result: The forage production, proportion of legumes, and forage quality all declined in the A-FE mixture after year 3 to reach less than 7 T.ha−1 and 20% legume in year 6. The yield advantage of A-FE compared to monospecific grasslands increased over time and was strongly associated with greater species complementarity, resulting from higher N transfer to grasses and increased asynchrony in the seasonal growth of A and FE. Root residue quantities and the potential for N supply to the rotation were not reduced when a degraded legume proportion was reached. Conclusion: The advantage of A-FE mixture over monospecific stands was greater integrated over a long period of time. No major risk of losing the N legacy effect by delaying mixture destruction was detected up to the first year after a sharp legume decline. [ABSTRACT FROM AUTHOR]

The famous EPR article of 1935 challenged the completeness of quantum mechanics and spurred decades of theoretical and experimental research into the foundations of quantum theory. A crowning achievement of this research is the demonstration that nature cannot in general consist in noncontextual pre-measurement properties that uniquely determine possible measurement outcomes, through experimental violations of Bell inequalities and Kochen-Specker theorems. In this article, I reconstruct an argument from Niels Bohr’s writings that the reality of the Einstein-Planck-de Broglie relations alone implies that no such properties can exist for momentum and position measurements, show how this argument responds to the challenge of EPR on general physical grounds, and advance that this reconstruction shows that and how Bohr’s “complementarity” is a view of the objective content and logic of quantum theory. [ABSTRACT FROM AUTHOR]

This article focuses on rebalancing our colonial worldview assumptions about psychological healing with our pre-colonial, "Indigenous" worldview. It argues that uninvestigated dominant worldview precepts are why most approaches to psychology have not adequately addressed mental health problems. As a solution, the author offers ways to use metacognitive worldview reflection with the aid of a worldview chart with 40 contrasting but potentially complementary worldview precepts. Proposing that ceremonies and trance-based healing and learning have long been used by Indigenous peoples for living in balance, he shows how self-hypnosis (Concentration-Activated Transformation) can be used to achieve the transformations desired. Using firstperson narrative, the author explains how he came to understand the importance of worldview precepts as related to human behavior and how psychology can be decolonized and transformed by addressing them. [ABSTRACT FROM AUTHOR]

Abstract Exploring the natural complementarity that exists between renewables is pivotal for optimizing clean electricity generation. Quantifying this complementarity can enhance electrical planning, reducing waste of natural resources and guiding investment decisions more effectively. To quantify the complementarity existing in Brazilian river basins, a methodology was proposed. Data on influent natural energy, irradiance, and wind speed are analyzed using Python. Through a comprehensive process, the most suitable correlation coefficient is identified. The subsequent calculation of coefficients for specific source combinations and periods, as well as the application of the Innovative Trend Analysis methodology, allow an understanding of the existing complementarity dynamics. The methodology was applied to the Capivari River basin, located in the state of Paraná, which included a monthly analysis of complementarity between hydraulic generation with wind and photovoltaic sources from June 2016 to April 2024. There was no discrepancy in the interpretations of the results obtained for Spearman’s Rho and Kendall's Tau, although the magnitude of Kendall's Tau is, on average, 30% lower for the combination of photovoltaic and hydraulic and 49% for the combination of wind and hydraulic. The combination of wind and hydraulics exhibited seasonal complementarity, demonstrating lesser advantages compared to photovoltaic generation, with around 61% of the acquired values of Spearman’s Rho being negative, approximately 28% of which were negligible. This percentage is lower than the over 82% of negative values observed for the photovoltaic and hydraulic combination, of which 12% are negligible. The results are consistent with the literature and validate the proposed methodology.

The need to prioritize sustainable development is expanding in light of the world's environmental concerns. To address these concerns, entrepreneurship is essential as a catalyst for inventions, economic expansion, and social change. Entrepreneurship activities have direct and indirect effects in the face of environmental risks and uncertainties. This study addresses gaps in understanding entrepreneurship's non-linear and complementarity effects, particularly opportunity-driven entrepreneurship and information and communication technologies (ICT), on the quality of the environment in Saudi Arabia. The dynamic ordinary least squares (DOLS) method is used to estimate long-run relationships. Saudi Arabia will be the perfect context for sustainability because the country has prioritized sustainability through its Vision 2030, and the Saudi government has substantially supported entrepreneurship. The main contribution of this paper to the existing literature is evident in its examination of the quadratic relationships between both opportunity-driven entrepreneurship and ICT diffusion, including ICT access, use, and skills, on environmental quality. In addition, the study delves into the ICT diffusion's modulating effects on the nexus of opportunity entrepreneurship with environmental quality, providing insights into how these factors can effectively improve environmental quality. The findings show that opportunity entrepreneurship and ICT diffusion initially deteriorate environmental quality before leading to improvements as their levels mature in the economy. Moreover, interactions between ICT proxies and opportunity entrepreneurship yield mixed effects, with negative net effects on CO2 emissions and ecological footprint countered by positive net effects on the environmental performance index. These findings highlight the dual role of ICT diffusion as a contributor to environmental challenges and a potential solution, depending on the level of its diffusion and interaction with entrepreneurial activities. Therefore, policymakers should create plans that encourage and direct business activity toward more environmentally friendly methods. They should also consider the short- and long-term effects of growing digital technologies on environmental sustainability and how they might revolutionize how entrepreneurship and sustainability goals are aligned.

IntroductionIncreasing intraspecific genetic variation (IV) has been identified as a potential factor to improve productivity and stabilise botanical composition in plant communities. In grasslands systems, this could offer a lever to manage uncertainties of production and variability in the harvested species balance. However, little is known about the conditions to favour IV impact and the mechanisms at play.MethodsThe dependency of IV impact on traits holding it and environmental stressors were analysed using a spatially-explicit individual-based model (IBM) of grassland communities. Sixty-three binary mixtures were defined to reflect a gradient of functional divergence between species regarding light and nitrogen (N) acquisition. The growth and dynamics of these communities were simulated for one year with three possible IV levels under two environments contrasting in terms of soil N fertility.Results and discussionThe model predicted a positive impact of moderate and high IV levels on maintaining the species balance over time, but no marked effects on mixture productivity. This stabilising effect increased at higher IV levels and under low soil N fertility. It also tended to be more pronounced in communities with intermediate functional divergence offering a significant overlap between light and N acquisition parameter values of both species. The major traits involved in the plant response to neighbours differed depending on the most contested resource, as indicated by the within-population selection of individuals with favourable N-related parameters under low N and light-related parameters under high N environments. The hypothesis that IV favours a complementarity of resource use between species was not supported. Rather, a greater spatial heterogeneity in competitive interactions was demonstrated, leading to a higher probability of growth and survival for individuals within the subordinate species. These results highlight the potential usefulness of IV to design forage mixtures with improved stability and resilience.

The purpose of intercropping is to promote positive biological interactions between plants. The ecological principles that govern intercropping can be relevant across various species combinations and environments. However, it's important to assess each case individually, as the application of intercropping is context-dependent. Due to the lack of data and insufficient research on the oilseed intercropping system, this review article was conducted to identify new opportunities to strengthen oilseed intercropping with other companion plants. Three main sources were used to gather data from the research on oilseed cultivation in intercropping systems that were investigated in this review: 1) A search of 20 databases for agricultural science 2) a web search 3) a review of 100 journals in agricultural science. The total number of studies in Table 3 was 25, and in Table 4, there were 4 studies. Of the 29 studies, 9 were conducted in China, 3 in Iran, 3 in Canada, 2 in North America, 2 in the United States and 1 in India, Nigeria, Mexico, Australia, Turkey and 1 in Brazil (Table 3), 2 in Iran, 1 in Poland and 1 in China (Table 4). Intercropping systems are essential for reducing hunger since intercropping, particularly cereals and legume/oil seed blends, supply a significant share of the family's calorie needs. Oilseeds with other crops intercrops appear, especially legumes, may contribute to a sustainable food supply and lead to increased agricultural sustainability and resilience. This study has highlighted the performance, efficiency of resource use, and the importance of Land equivalent ratio as the most important indicator for evaluating intercropping, increasing the content and quality of oil and fatty acid in intercropping of oilseeds with legumes and other accompanying plants.

This article presents a strategic decision-making tool to assist corporate management in analyzing the trajectory of their business model portfolio. The tool provides a robust means of assessing the trajectory of a business model portfolio through the evolution of inter-business model complementarity and intra-business model complexity. The article illustrates the use of the tool through the example of the radical restructuring of Hewlett Packard's (HP) business model portfolio in 2015, which resulted in two smaller, more adaptive corporate entities with distinct business models that could pursue redefined growth opportunities after the split. [ABSTRACT FROM AUTHOR]