A blockchain bee colony double inhibition labor division algorithm for spatio-temporal coupling task with application to UAV swarm task allocation

It is difficult for the double suppression division algorithm of bee colony to solve the spatio-temporal coupling or have higher dimensional attributes and undertake sudden tasks.Using the idea of clustering,after clustering tasks according to spatio-temporal attributes,the clustered groups are linked into task sub-chains according to similarity.Then,based on the correlation between clusters,the child chains are connected to form a task chain.Therefore,the limitation is solved that the task chain in the bee colony algorithm can only be connected according to one dimension.When a sudden task occurs,a method of inserting a small number of tasks into the original task chain and a task chain reconstruction method are designed according to the relative relationship between the number of sudden tasks and the number of remaining tasks.Through the above improvements,the algorithm can be used to process tasks with spatio-temporal coupling and burst tasks.In order to reflect the efficiency and applicability of the algorithm,a task allocation model for the unmanned aerial vehicle(UAV)group is constructed,and a one-to-one correspondence between the improved bee colony double suppression division algorithm and each attribute in the UAV group is proposed.Task assignment has been constructed.The study uses the self-adjusting characteristics of the bee colony to achieve task allocation.Simulation verification and algorithm comparison show that the algorithm has stronger planning advantages and algorithm performance.

Rural labor migration and farmers’arrangements of rice production systems in Central China:Insight from the intergenerational division of labor

Rice production is crucial for food security in China,and its relationship with rural labor migration has been studied extensively.Labor migration in rural China has taken new forms in recent years.There has been a discernible trend wherein adult children have started migrating to cities while their elderly parents return to villages to re-engage in on-farm work.The phenomenon has notably shaped the intergenerational division of labor(IDL)within households.However,it remains to be seen how farmers adjust their rice production systems in response to the IDL.The age of 60 years for employment injury insurance is the eligibility threshold for off-farm employment and is used to obtain a source of exogenous variation in the IDL.Based on a representative household survey of 1,752 rice farmers in the Hubei Province of Central China,our fuzzy regression discontinuity analysis reveals that farmers in IDL households are more likely to adopt ratoon rice(RR)than single cropping rice(SR)or double cropping rice(DR).The effect of the IDL varies under different levels of operational scales and specialized agricultural service availability.Further analysis suggests that farmers’arrangements are associated with two potential mechanisms of downward intergenerational transfer.Monetary transfer for urban housing purchases increases RR in IDL households,and time transfer for intergenerational childcare significantly promotes SR in IDL households.This study enhances the understanding of the relationship between rural labor migration and rice production in China,providing a reference for adjusting rice production systems to ensure food security.

What Role Will China Play in the World Labor Division System?

Since the 1990s, the Chinese economy has main-tained strong growth momentum despite the compli-cated and cjamgeable international environment. Duringthe 1989-2001 period, the average annual growth rate ofthe Chinese economy was 9.3 percent, making China oneof the fastest growing economies of the world (NBS,2002).

Re-measuring Status of China＇s High-Tech Industries in International Division of Labor： Applying a Non-Competitive Input-Output Model

Based on a refined ＂non-competitive input-output model,＂ this paper proposes a new framework for analyzing the status of a country＇s high-tech industries in the international division of labor, i.e. calculates the index of＂ weighted value-added productivity ＂ by compiling non-competitive input-output tables which distinguish high-tech industries from traditional industries. The new method effectively avoids ＂statistical illusion＂ which stems from a biased focus on gross exports under intra-product specialization. The empirical study shows that since 1995, the status of China＇s high-tech industries has grown quickly as a result of enhanced labor productivity, but still lags behind those of major developed countries. In addition, the study also suggests that the status of China＇s high-tech industries has been over-estimated using the traditional gross export statistical method.

Division of labor, perceived labor-related stress and well-being among European couples

Background: The objective of this study was to analyze how involvement in paid and unpaid work and perceived labor-related stress are related to the well-being of married or cohabiting men and women in Europe. Methods: Data from the European Social Survey round two has been used. The sample consists of 5800 women and 6952 men, aged between 18-65 years. Exposure variables were divided into labor involvement, time spent on paid and unpaid work, and labor-related stress. Multiple logistic regressions with 95 % confidence interval were used. Results: Women spent more hours on housework than men did, but fewer hours on paid work. Women tended to perceive higher degrees of housework-related stress than men did. Furthermore, women who experienced houseworkrelated stress tended to have higher odds of reporting a low level of perceived well-being than men, while men had higher odds of reporting a low level of perceived well-being when they experienced work/family conflicts. Conclusion: For both men and women, the perceptions of labor involvement are of more importance for the well-being than the actual time spent on paid and unpaid work. This implies that, when studying the relationship between labor involvement and well-being, perceived stress should be considered.

The Division of Labor in Parenting and Its Impact on Adolescent Development

The Law of the People's Republic of China on Family Education Promotion explicitly requires both parents to engage in their children's education, but so far there has not been sufficient empirical research on the division of labor in parenting in China. This study,based on questionnaire survey data, is an in-depth investigation of the current situation of the division of labor in parenting, differences in parental status in the family, and the influence of these factors on adolescent development in China. Our findings show that 1)The main pattern of the division of labor in parenting in China is one of intensive maternal parenting with no paternal educational input, followed by a pattern of low participation by both parents. The least common is a pattern of high participation by both parents. 2) The patterns of division of labor in parenting are significantly related to differences in parental status. A family in which the father is highly educated or has a higher level of education than the mother is more likely to evince the pattern of a high level of joint participation by both parents. 3) The division of labor in parenting does not significantly affect the academic performance of adolescents, but has a significant impact upon their mental health and noncognitive abilities. In terms of mental health, strong two-parent participation and intensive maternal parenting with no paternal input are more effective than a low level of participation by both parents. This indicates that a high level of participation by either parent improves children's mental health. In terms of non-cognitive abilities, we found that a high level of joint two-parent participation is more effective than either the pattern of intensive maternal parenting with no paternal educational participation or the pattern of low participation by both parents. The indicates that a father's active role in developing children's non-cognitive abilities cannot be replaced by the mother. 4) A father's contribution in any dimension of parenting can have positive effects on children's mental health and non-cognitive abilities,while a mother can only help with children's mental health and non-cognitive abilities by means of her investment in emotional support and assistance in daily living. The above conclusions indicate that the paternal role is crucial and that greater participation by both parents is highly significant for full adolescent development.

Reflections on,and Improvements of,the Mediation Functions of People's Assessors

Legislatively,the people’s assessors are defined as individuals who share judicial power.However,in the context of dispute resolutions,their role is restricted by the courts,which affects the extent of their assessorial activities.It is imperative to reconsider the implications of the people’s assessors’deep involvement in mediation from the standpoint of societal division of labor.To enhance this division of labor,it is advisable that the people’s assessors relinquish their mediation roles.It is necessary to redefine the distinctions between people’s assessors,judges,and people’s mediators,including specially invited mediators.This would not only make up the deficiencies in the role of professional judges but also relieve the tension between judicial professionalism and popular accountability.

Self-organized search-attack mission planning for UAV swarm based on wolf pack hunting behavior

Cooperative search-attack is an important application of unmanned aerial vehicle(UAV)swarm in military field.The coupling between path planning and task allocation,the heterogeneity of UAVs,and the dynamic nature of task environment greatly increase the complexity and difficulty of the UAV swarm cooperative search-attack mission planning problem.Inspired by the collaborative hunting behavior of wolf pack,a distributed selforganizing method for UAV swarm search-attack mission planning is proposed.First,to solve the multi-target search problem in unknown environments,a wolf scouting behavior-inspired cooperative search algorithm for UAV swarm is designed.Second,a distributed self-organizing task allocation algorithm for UAV swarm cooperative attacking of targets is proposed by analyzing the flexible labor division behavior of wolves.By abstracting the UAV as a simple artificial wolf agent,the flexible motion planning and group task coordinating for UAV swarm can be realized by self-organizing.The effectiveness of the proposed method is verified by a set of simulation experiments,the stability and scalability are evaluated,and the integrated solution for the coupled path planning and task allocation problems for the UAV swarm cooperative search-attack task can be well performed.

Intrafloral differentiation of stamens in heterantherous flowers

Flowers that have heteromorphic stamens （heterantherous flowers） have intrigued many researchers ever since the phenomenon was discovered in the 19th century. The morphological differentiation in androecia has been suggested as a reflection of ＂labor division＂ in pollination in which one type of stamens attracts pollinators and satisfies their demand for pollen as food and the other satisfies the plant＇s need for safe gamete dispersal. The extent and patterns of stamen differentiation differ notably among taxa with heterantherous flowers. Seven species with heteromorphic stamens in three genera were sampled from Leguminosae and Melastomataceae, and the morphological difference of androecia, pollen content, pollen histochemistry and viability, pollen micro- morphology, as well as the main pollinators were examined and compared. Pollen number differs significantly between stamen sets of the same flower in most species investigated, and a correlation of pollen number and anther size was substantiated. Higher pollen viabilities were found in the long （pollinating） stamens of Senna alata （L.） Roxb. and S. bicapsularis （L.） Roxb. Dimorphic pollen exine ornamentation is reported here for the first time in Fordiophytonfaberi Stapf. The height of stigma and anther tips of the long stamens in natural conditions was proved to be highly correlated, supporting the hypothesis that they contact similar areas of the pollinator＇s body.

苏通大桥建设与南通区位的优势转化

苏通大桥的建设将从根本上改变南通的经济区位 ,将南通从上海强辐射圈的外缘拉入上海经济区的核心圈 ,使南通从交通网络的神经末梢升格为重要的交通枢纽。南通在区域分工中的角色应重新定位 ,通过积极发展特色经济 ,努力建成国际性物流仓储中心北翼分中心 ,具有国际竞争力的加工与贸易城市 ,面向国内国际大市场的绿色食品生产供应基地 ,上海等大都市的后花园。南通区位优势必须转化为经济优势 ,为此须调整发展思路 ,由自成体系转变为主动融合进上海板块 ,为优势转化确立观念基础 ;调整发展战略 ,由偏重于GNP的增长转变为切实实施可持续发展战略 ,为优势转化提供生态及技术基础 ;调整产业结构 ,由原有的支柱产业转向发展特色支柱产业 。

Climate Change and Green Growth:A Perspective of the Division of Labor

This paper presents a new research agenda on climate change and green growth from the perspective of the division of labor in classical economics. The paper covers three major dimensions of green growth （i.e. carbon emissions, environmental proteetion and material resources use） and some related important topics, as well as the fresh policy implications of the new research agenda, Typical marginal analysis in a given structure of the division of labor suggests that ＂green＂ action is a burden to economic development. Therefore, climate negotiation has become a burden-sharing game and has reached a stalemate. New thinking is badly needed to rescue these negotiations and to drive a shift to a new ＂green growth＂ paradigm. The proposed new research agenda represents an effort to create a new narrative on climate change and green growth. Because the new research agenda can theoretically predict the possibility that a more competitive structure of the division of labor could be triggered by ＂＇green ＂＇ policy, it has promising policy implications for various important challenges facing us in the 21st century.

A Division of Labor Perspective on Mothers Who Accompany Their Children’s Study--A Case Study of Student Guardianship among M Town’s Working Families

In modern society,female parents from different strata are involved in the process of constructing their motherhood through education.But mothers of different social classes have different ways of acting.Amid increasingly fierce educational competition,the mothers of ordinary working families move into the school neighborhood to look after their children as the college entrance examination(gaokao)approaches,and construct their“student guardian motherhood”status through their task of accompanying their children’s study.This paper takes as its subject mothers as student guardians in M Town,a typical gaokao community,providing a structural analysis of the features of such mothers’educational labor and production relations from the perspective of gender and class.Seen in the light of the family’s gendered division of labor,the educational work of student guardian mothers is a new form of housework.In terms of the content of its division of labor,the student guardian work of mothers dedicated to their children’s well-being counts as“low-end”work,an overflow from links in the division of labor in school education.On the one hand,due to their lack of cultural capital,the relationship between parents and schools is one of“accompanying”and“submission.”On the other,these parents consciously keep their distance from“quality education”and form an organic compound with the schools’efficient exam-centered education.The traditional Chinese idea of“hoping one’s sons become dragons”[achieve greatness]and the modern“child-centered”concept of nurturing jointly shape the image of student guardian mothers who work as service-oriented mothers in tandem with school education.The function of student guardians is not only the educational labor of“looking after the children”enjoined on middle-and lower-class female parents by the current division of education and social labor,but also an active and rational action strategy adopted by working class Chinese mothers striving for their children’s academic success.

China-US High-Tech Competition,Trade Conflict and Development Rights

The power and interest of industrial manufacturers are determined by their status in the relations of production.At the international level,countries see their economic and political status rise only when they climb the ladder in the international division of labor.As the primary production forces,science and technology are the main drivers behind such change.As new technologies give rise to new industries and restructure the international division of labor,developed countries strive to enhance the protection of their intellectual property rights(IPR)and safeguard their monopoly over core technologies.For developed countries,technological prowess holds the key to their supremacy in the global supply chain and international relations.The 19 th CPC National Congress makes clear the overarching goal in the new era is to rejuvenate the Chinese nation and turn China into a strong modern country.As an important material condition for achieving this goal,China must transition from being medium-and low-end links in the international division of labor to becoming high-end links.In this process,China will encounter backlash from developed countries that lead in the international division of labor.The recent China-US tussle over trade in high-tech goods is a case in point,and should be viewed through the lens of the relations of production and the international division of labor.The insights thus achieved will be of great significance to China’s future development.

Division of domestic labor and fertility behaviors in China:the impact of extended family traditions on gender equity theory

Gender equity in division of domestic labor and its positive effects on fertility have been well documented in Western countries.This research extends the classic gen-der equity theory to East Asia,a country with an extended family tradition that complicates gender roles.Using four waves of data from the China Family Panel Study(CFPS),we find that:(1)parents or parents-in-law serve as a major source of informal help for housework and childcare in China;(2)the domestic help from parents can significantly increase the likelihood of childbearing for Chinese women;(3)the help from husbands is less important and only significant when parental help is absent.While gender equity in the West has a profound influence on gender equity in the East,Confucian traditions that assign roles according to gender and to the relationships among grandparents,parents,and children are a force to be reckoned with in China.

How U.S. Antidumping Actions Affect China＇s Inward and Outward FDI

This paper presents an empirical study of how U.S. antidumping （AD） actions against China affect China ＇s inward and outward foreign direct investment （FDI） based on the international division of labor model. Our findings are as follows： （1） The U.S.-China trade deficit has been widened by both downstream firms in China established through vertical FDI and also inward enterprises established through horizontal FDI. The widening deficit in turn exacerbates vitriolic complaints in the U.S. about injury to its industries. This will lead to further U.S. AD actions discouraging FDI in China. （2） U.S. AD cases against China have negatively impacted China＇s metal manufacturing, chemical and, especially, textile industries in terms of exports and inward FDI. From 2004 to 2009, the share of total inward FDI going to China＇s manufacturing sector has dropped drastically by almost 20 percent. This supports predictions made using the international division of labor model. （3） With U.S. AD actions against Chinese products on the rise, Chinese firms chose not to circumvent such barriers through outward FDI in the U.S. but rather through outward FDI in tax havens. Such a pattern of outward FDI is not helpful for China to establish its own successful industrial development model.

Substrate availability and toxicity shape the structure of microbial communities engaged in metabolic division of labor

Metabolic division of labor(MDOL)represents a widespread natural phenomenon,whereby a complex metabolic pathway is shared between different strains within a community in a mutually beneficial manner.However,little is known about how the composition of such a microbial community is regulated.We hypothesized that when degradation of an organic compound is carried out via MDOL,the concentration and toxicity of the substrate modulate the benefit allocation between the two microbial populations,thus affecting the structure of this community.We tested this hypothesis by combining modeling with experiments using a synthetic consortium.Our modeling analysis suggests that the proportion of the population executing the first metabolic step can be simply estimated by Monod-like formulas governed by substrate concentration and toxicity.Our model and the proposed formula were able to quantitatively predict the structure of our synthetic consortium.Further analysis demonstrates that our rule is also applicable in estimating community structures in spatially structured environments.Together,our work clearly demonstrates that the structure of MDOL communities can be quantitatively predicted using available information on environmental factors,thus providing novel insights into how to manage artificial microbial systems for the wide application of the bioindustry.

Learning by Doing Effect in North South Trade under the Global Value Chains： An Empirical Analysis of Various Industries in the U.S.

This paper studies the division of labor and economic development under global value chains in North South trade by mainly investigating the changes of production hours and cost per unit along with more and more output and increasing trade value in several industries in the U.S., because the U. S. is at the leading position in the division of labor by global value chains. The empirical evidence reveals that more international outsourcing, there will be more detailed division of labor, and the industry unit production time and production cost will show more declining trend year by year. This is consistent with that the global value chains and the outsourcing play more and more important roles in the international division of labor and economic growth in both developed and developing countries, and helps explain the integration of workforce across countries in the global value chains.

The Half-industrial and Half-agricultural Working Structure in Rural China

The half-industrial and half-agricultural working structure in rural China is a key phenomenon supporting China's industrialization and urbanization. Based on inter-generational division of labor, the current half-industrial and half-agricultural working structure has given birth to the elderly agriculture and mainstay agriculture, the latter of which has gone out of agricultural involution and to some extent changed the management philosophy of traditional agriculture, becoming a key direction of China's agricultural development. Such a structure has also shaped the "new three-generation family" and facilitated the expansion of middle-income rural groups. While supporting long-term farmers in rural China, it also paves the way for China's urbanization. This structure plays a significant role in the economic, political and social development of rural China. Therefore, this structure is a rural economic structure which concerns farmers' income structure and livelihood patterns. Meanwhile, it is also a rural political structure, village structure and family structure. Through development and refinement, the half-industrial and halfagricultural working structure in rural China has far extended the scope of a descriptive concept. As a dominant variable, the structure, along with its derivatives, through permutation and combination, can establish logical relationships and an interpretation chain among a variety of major economic, political and social phenomena in rural China. Therefore, it can expect to be constructed into an analyticity-oriented mid-level concept.

Four development stages of collective intelligence

The new generation of artificial intelligence(AI)research initiated by Chinese scholars conforms to the needs of a new information environment changes,and strives to advance traditional artificial intelligence(AI 1.0)to a new stage of AI 2.0.As one of the important components of AI,collective intelligence(CI 1.0),i.e.,swarm intelligence,is developing to the stage of CI 2.0(crowd intelligence).Through in-depth analysis and informative argumentation,it is found that an incompatibility exists between CI 1.0 and CI 2.0.Therefore,CI 1.5 is introduced to build a bridge between the above two stages,which is based on biocollaborative behavioral mimicry.CI 1.5 is the transition from CI 1.0 to CI 2.0,which contributes to the compatibility of the two stages.Then,a new interpretation of the meta-synthesis of wisdom proposed by Qian Xuesen is given.The meta-synthesis of wisdom,as an improvement of crowd intelligence,is an advanced stage of bionic intelligence,i.e.,CI 3.0.It is pointed out that the dual-wheel drive of large language models and big data with deep uncertainty is an evolutionary path from CI 2.0 to CI 3.0,and some elaboration is made.As a result,we propose four development stages(CI 1.0,CI 1.5,CI 2.0,and CI 3.0),which form a complete framework for the development of CI.These different stages are progressively improved and have good compatibility.Due to the dominant role of cooperation in the development stages of CI,three types of cooperation in CI are discussed:indirect regulatory cooperation in lower organisms,direct communicative cooperation in higher organisms,and shared intention based collaboration in humans.Labor division is the main form of achieving cooperation and,for this reason,this paper investigates the relationship between the complexity of behavior and types of labor division.Finally,based on the overall understanding of the four development stages of CI,the future development direction and research issues of CI are explored.

Gustatory responsiveness in Vespula germanica workers:exploring the interplay between sensory perception and task specialization

Workers'task specialization and division of labor are critical features of social insects'ecological success.It has been proposed that the division of labor relies on response threshold models:individuals varying their sensitivity(and responsiveness)to biologically relevant stimuli and performing a specific task when a stimulus exceeds an internal threshold.In this work,we study carbohydrate and protein responsiveness and their relation to worker task specialization in Vespula germanica,an invasive social wasp.The sucrose and peptone responsiveness of two different subcastes,preforagers and foragers,was determined by stimulating the antenna of the wasps with increasing concentrations of the solution and quantifying whether each concentration elicited a licking response.We studied responsiveness in five different ways:(1)response threshold,(2)concentration 50(concentration to which at least 50%of wasps responded),(3)maximum response,(4)mean scores and(5)median scores.Our results suggest that V germanica foragers are more sensitive to sucrose(lower thresholds)than preforager workers.However,we found no differences for peptone thresholds(i.e.,a protein resource).Nonetheless,this is the first study to investigate response thresholds for protein resources.The intercaste variation in sucrose responsiveness shown in our work contributes to the existing knowledge about response threshold theory as a mechanism for task specialization observed in V germanica.