The problem of joint eigenvalue estimation for the non-defective commuting set of matrices A is addressed. A procedure revealing the joint eigenstructure by simultaneous diagonalization of. A with simultaneous Schur d...The problem of joint eigenvalue estimation for the non-defective commuting set of matrices A is addressed. A procedure revealing the joint eigenstructure by simultaneous diagonalization of. A with simultaneous Schur decomposition （SSD） and balance procedure alternately is proposed for performance considerations and also for overcoming the convergence difficulties of previous methods based only on simultaneous Schur form and unitary transformations, it is shown that the SSD procedure can be well incorporated with the balancing algorithm in a pingpong manner, i. e., each optimizes a cost function and at the same time serves as an acceleration procedure for the other. Under mild assumptions, the convergence of the two cost functions alternately optimized, i. e., the norm of A and the norm of the left-lower part of A is proved. Numerical experiments are conducted in a multi-dimensional harmonic retrieval application and suggest that the presented method converges considerably faster than the methods based on only unitary transformation for matrices which are not near to normality.展开更多
In order to research the danger caused by the rockburst, the electromagnetic emission （EME） in the coal rock was monitored and analyzed. The higher the stress in the coal is, the stronger the deformation and the fai...In order to research the danger caused by the rockburst, the electromagnetic emission （EME） in the coal rock was monitored and analyzed. The higher the stress in the coal is, the stronger the deformation and the failure are, and also the signal of the EME will be. The EME is increased by a relatively large margin before the slight shock and rockburst break out at spot. Therefore, some methods to monitor and forecast the danger of rockburst were proposed, including the critical point and devia- tion values, which was by non-contract method. In the end, the observation of EME in Xingfu was used to analyze and forecast the danger level by the rockburst. Then, the measures were proposed to prevent and cure the rockburst.展开更多
Clean Development Mechanism (CDM) has given birth to an international carbon trading market prosperity,which provides developing countries with valuable opportunities to address climate change issues together with eco...Clean Development Mechanism (CDM) has given birth to an international carbon trading market prosperity,which provides developing countries with valuable opportunities to address climate change issues together with economic development and environmental improvement to achieve the sustainable goal. China,as the biggest carbon market,has caught worldwide attention. However,most studies of CDM focus on economics and environmental science,few on its legal problems. Transaction activities are the essence of market mechanism. To protect the benefits of market participators and regulate the market orders,the Contract Law takes this important role along with development of market mechanism. Therefore,this paper only focuses on the carbon market in China,with the assessment of the risks in the CDM development first. The involved contracts will be identified and analyzed to point out the major contract legal issues in Chinese carbon market. In the meantime,this paper further discusses that measurements at both private level and governmental level should be taken to protect and realize the utility and equality of contract in the carbon market.展开更多
the amendment of ＂Labor Contract Law＂ ＂and the ＂＂ Provisional Regulation of Labor Dispatch ＂ promote file labor dispatch system foe＇using on ＂equal pay tbr equal work ＂＂ aald ＂three natures＂ and so on in 2...the amendment of ＂Labor Contract Law＂ ＂and the ＂＂ Provisional Regulation of Labor Dispatch ＂ promote file labor dispatch system foe＇using on ＂equal pay tbr equal work ＂＂ aald ＂three natures＂ and so on in 2013 to promote the establishment of a modern system of labor contract. However. there are still many deficiencies of the relevant provisions and need to perfect it. As a result, the article studies the system of labor dispatch and points oul the problems of the labor dispatch from the background and the stattts and the new rules, and puts forward suggestions for the improvement ot the system of labor dispatch. Hope the labor dispatch system can maintain the interests of the three parties and have a more rapid development in our country.展开更多
A vector autoregressive model was developed for a sample of container carrier time charter rates. Although the series of time charter rates are themselves found non-stationary, thus precluding the use of many modeling...A vector autoregressive model was developed for a sample of container carrier time charter rates. Although the series of time charter rates are themselves found non-stationary, thus precluding the use of many modeling methodologies, evidence provided by co-integration tests points to the existence of stable long-term relationships between the series. An assessment of the forecasts derived from the model suggests that the spec-ification of these long-term relationships does not improve the accuracy of long-term forecasts. These results are interpreted as a corroboration of the efficient market hypothesis.展开更多
A homotopy-Newton hybrid method is proposed for predicting azeotropes, in which the set of homotopy equations with larger convergent domain is solved firstly to generate the better initial guess, then Newton algorithm...A homotopy-Newton hybrid method is proposed for predicting azeotropes, in which the set of homotopy equations with larger convergent domain is solved firstly to generate the better initial guess, then Newton algorithm is used to solve the azeotrope equations. It has been proved through some illustrative examples that the hybrid method has concurrently the advantages of the wide range of convergence, flexible demand for initial guess and good smoothness of iterative process as the homotopy algorithm, and the rapid convergent speed and high accuracy as Newton′s method. So the hybrid method is a prospective approach to predicting the azeotropes of nonideal mixtures.展开更多
Most aspects of construction projects mainly fall under contractual regime. However, when things go wrong such as when the project is abandoned for various reasons, they may create two different scenarios： a contract...Most aspects of construction projects mainly fall under contractual regime. However, when things go wrong such as when the project is abandoned for various reasons, they may create two different scenarios： a contract that is breached and a fixed structure that is left on the land which may constitute an incomplete benefit that is acquired by one of the parties. The transfer of such benefit is initially made with a legal ground, but that ground has since ceased to exist. If some aspect of that benefit cannot be recovered under a contract, enrichment rules may be competent to solve the problem. How to measure the different aspects of that enrichment is however a problem that may have different interpretations according to different conceptions of the foundations of enrichment liability in a particular legal system. This article explores the measures of enrichment in such cases of failed bilateral contracts scenarios working from South African perspective. It argues that in cases of failed bilateral contracts generating an enrichment situation, sanctioning a dual measure of enrichment in a legal system may be an appropriate avenue.展开更多
To provide a risk-sharing mechanism that encourages a component supplier and a manufacturer to expand their production capacity of components and products, many researches on SCM suggested that it is better for the SC...To provide a risk-sharing mechanism that encourages a component supplier and a manufacturer to expand their production capacity of components and products, many researches on SCM suggested that it is better for the SC players to connect a long-term contract with flexible preconditions before doing the decision-making of production capacity. With considering of the uncertainty of demand and integrity problems between SC players, it is difficult to set reasonable preconditions. As a result, under-investment problems still occur frequently. In this paper, after we had discussed the decision-making of production capacity with the preconditions by analyzing the character of the players, we verified the under-investment problem of the supply chain. In order to clarify the optimum preconditions to alleviate the under-investment problem, we also analyzed the relations between preconditions and supply capacity of the whole supply chain. In the last part of this paper, we proposed a method of preconditions setting in such uncertain situations.展开更多
This paper investigates the synchronization and circuit implementation of a new hyperchaotic Lorenz system. This system is generated by controlling a generalized Lorenz system to hyperchaotic by introducing a linear s...This paper investigates the synchronization and circuit implementation of a new hyperchaotic Lorenz system. This system is generated by controlling a generalized Lorenz system to hyperchaotic by introducing a linear state feedback controller to its scored equation. Global synchronization of the new hyperchaotic systems can be achieved by unidirectonally linear coupled approach, which is illustrated by both numerical simulations and electronic circuit experiments.展开更多
The application of ensemble optimal interpolation in wave data assimilation in the South China Sea is presented. A sampling strategy for a stationary ensemble is first discussed. The stationary ensemble is constructed...The application of ensemble optimal interpolation in wave data assimilation in the South China Sea is presented. A sampling strategy for a stationary ensemble is first discussed. The stationary ensemble is constructed by sampling from 24-h-interval significant wave height differences of model outputs over a long period,and is validated with altimeter significant wave height data,indicating that the ensemble errors have nearly the same probability distribution function. The background error covariance fields expressed by the ensemble sampled are anisotropic. Updating the static samples by season,the seasonal characteristics of the correlation coefficient distribution are reflected. Hindcast experiments including assimilation and control runs are conducted for the summer of 2010 in the South China Sea. The effect of ensemble optimal interpolation assimilation on wave hindcasts is validated using different satellite altimeter data(Jason-1 and 2 and ENVISAT) and buoy observations. It is found that the ensemble-optimal-interpolation-based wave assimilation scheme for the South China Sea achieves improvements similar to those of the previous optimal-interpolation-based scheme,indicating that the practical application of this computationally cheap ensemble method is feasible.展开更多
The main objective of this study was to investigate the presence of natural endophytic Beauveria bassiana within date palm tissues using molecular technique and measure their field efficacies in controlling Dubas bug,...The main objective of this study was to investigate the presence of natural endophytic Beauveria bassiana within date palm tissues using molecular technique and measure their field efficacies in controlling Dubas bug, Ornmatissus lybicus （Deberg）. Two entomopathogenic B. bassiana isolates （MARD 108 and 100） were isolated from date palm, Phoenix dactylifera L. leaves; in addition, one isolate （MARD 92） originally from soil was identified to have endophytic property. Concentration of 1 × 10^9 conidia/mL of each of three endophytic isolates was used in field experiments targeting Dubas bug nymphs via injection tree trunks. The results indicated that the high mortality rates reached 92%, 96% and 100% with infliction of the three endophytic isolates after 15 d from the treatment. The successful establishment of the fungal isolates in the date palm tissue was determined using B. bassiana species-specific primer for the first time via using conventional polymerase chain reaction （PCR） amplification technique before and after injection, and the positive gel band representation was the identification signs. The novel results depicted for the first time the presence of natural endophytic B. bassiana isolates within date palm tissues and their field efficacies in controlling Dubas bug, O. lybicus （Deberg） infestation.展开更多
Non-linear programming analysis suggests that employment effects of minimum wage regulation are the result not only of the regulation itself but also of the external regulatory environment. At a certain level, the reg...Non-linear programming analysis suggests that employment effects of minimum wage regulation are the result not only of the regulation itself but also of the external regulatory environment. At a certain level, the regulatory environment intensifies the effect on employment of minimum wage regulation. Empirical studies based on survey data from 439 enterprises in Guangdong and Fujian show that minimum wage rises had a greater impact on the employment of rural migrant workers in 2008 than in 2007, although no significant change was observed among workers who were permanent urban residents. Further analysis shows that the greater impact on migrant workers derives mainly from the strengthened regulatory environment brought about by the Employment Contracts Law. The permanent urban workforce has not been similarly affected because their interests have been given priority under the dual employment system. This reminds us that the employment effects of the Employment Contracts Law may be realized indirectly through other regulatory measures, including strengthened minimum wage regulation.展开更多
Article 4 of the Labor Contract Law lays down the right of the Staff and Workers＇ Representative Congress （SWRC） to deliberate on the formulation of （intra-enterprise） work regulations, but this has become a ＂s...Article 4 of the Labor Contract Law lays down the right of the Staff and Workers＇ Representative Congress （SWRC） to deliberate on the formulation of （intra-enterprise） work regulations, but this has become a ＂soft＂ law in judicial practice. The judicial criteria for judging the validity of work regulations are in essence determined by the judge＇s judgment on their reasonableness. As an important embodiment of Chinese politics, economics and culture, the transformation of the SWRC that accompanied the market economy has not negated its value as an indigenous traditional resource. The SWRC does not just enjoy deliberative rights in the formation of regulations, as clearly specified in constitutional law, but also has rights under the law in local legislation and practice. Hence the system of work regulations is neither a unilateral decision on the part of management nor a contract, but rather an autonomous norm developed through the SWRC mechanism. Given the mandatory nature of Article 4 of the Labor Contract Law, regulations will only be valid after they havegone through a democratic process. The further development of the theory of normative system formation should endow the SWRC with greater rights and integrate it smoothly with the collective contract system to standardize collective labor relations.展开更多
Since its very release in March 2006, the opinion-soliciting draft of the Labor Contract Law has sparked considerable controversy. Indeed, the whole process of its consideration, promulgation, implementation and amend...Since its very release in March 2006, the opinion-soliciting draft of the Labor Contract Law has sparked considerable controversy. Indeed, the whole process of its consideration, promulgation, implementation and amendment has been accompanied by complex questioning and a diversity of views. This has to some extent reduced appreciation of the value of the Labor Contract Law itself. In the economy and society, rational legal construction can minimize the damage done by the failure of private negotiations. The Labor Contract Law is dedicated to changing the action space of workers and enterprises in order to promote efficiency in production and equity in distribution. With the aim of constructing and developing harmonious and stable labor relations, the law seeks to encourage workers and enterprises to forge communities of shared interests, shared undertakings, a common destiny and a joint mission; it is here that the true value of the law lies. In terms of institutional design, in building a system that categorizes workplace employment, the Labor Contract Law makes a breakthrough in workplace labor relations management and sets up an innovative labor relations management system with Chinese characteristics. Faced with the new normal in labor relations, we should make further progress in strengthening democraticenterprise management, optimizing the developmental environment of business, etc.展开更多
Our survey data on migrant workers in the Pearl River Delta region from 2006 to 2010 and recent fieldwork show that the enactment of the Labor Contract Law encouraged both the signing of labor contracts and the long-t...Our survey data on migrant workers in the Pearl River Delta region from 2006 to 2010 and recent fieldwork show that the enactment of the Labor Contract Law encouraged both the signing of labor contracts and the long-term nature of these contracts, making enterprises more willing to increase investment in human capital, increase employee insurance and welfare and give more attention to human-centered management, leading eventually to the establishment of an internal labor market that incorporates migrant workers. This is accompanied by progress in human resources management techniques and strategies in SMEs and private enterprise. Although the Labor Contract Law to some extent intensified the tendency for migrant workers to undertake collective protection of their rights, the establishment of an internal labor market could also ease the tension between labor and capital and lead to employees becoming more rational and prudent in safeguarding their rights, thereby providing a basis for a transition from confrontation to win-win cooperation between labor and capital. The Labor Contract Law has accelerated and strengthened the trend of individualized development in China’s labor relations. The protection of labor rights through the two channels of the 'rigid' legal system and 'flexible' internal management can help reduce the risk of large-scale collective labor disputes and establish a relatively harmonious institutionalized labor relationship.展开更多
The Labor Contract Law classifies collective contracts as special labor contracts, ignoring the fundamental differences between collective contracts and labor contracts. This has plunged it into jurisprudential obstac...The Labor Contract Law classifies collective contracts as special labor contracts, ignoring the fundamental differences between collective contracts and labor contracts. This has plunged it into jurisprudential obstacles and institutional difficulties. In terms of the main entities, efficacy, dispute settlement mechanisms, etc. collective contracts have their own institutional characteristics. They should be incorporated into the legislative framework for collective labor relations in future legislation, and should link up with trade unions, collective consultation and collective dispute settlement to form a complete system of collective labor law.展开更多
As the civil law expression of internet plus transactions, the legal relations in online trading platform transactions constitute a complex aggregate of legal relationships composed of groups of legal relations. Speci...As the civil law expression of internet plus transactions, the legal relations in online trading platform transactions constitute a complex aggregate of legal relationships composed of groups of legal relations. Specifically, they consist of three basic interlinked legal relationships： Contract relations for online trading platform services between the platform provider and the seller or service provider, and between the platform provider and the consumer. This includes the sales or service contract relations between the triad of the seller, the service provider and the consumer. These relations contain five kinds of major content, viz., the provision of transaction space, the publishing of transaction information, price escrow payment, distribution and delivery of the commodity, and transaction credit evaluation. They involve three forms of supplementary legal relations： the supplementary contract relationship between the platform provider and a third party payment institunon; between the seller and third party credit reporting agency; and between the seller and a logistics enterprise. The three forms of supplementary contractual legal relations are set up to act on the major contents of the basic legal relationships in online transactions. On the basis of the online trading platform service contract relationships between the platform provider and the triad of the seller, the service provider and the consumer, the flow of the above- mentioned legal relations centers on the contract of sales or service set up between the seller, the service provider and the consumer to accomplish the aim of the online transaction, meet social needs and boost economic development.展开更多
An in-situ microanalysis of Pb isotopic compositions in sulfide minerals is carried out by using femtosecond laser-ablation multi-collector inductively coupled plasma mass spectrometry （fsLA-MC-ICP-MS）. High-tempera...An in-situ microanalysis of Pb isotopic compositions in sulfide minerals is carried out by using femtosecond laser-ablation multi-collector inductively coupled plasma mass spectrometry （fsLA-MC-ICP-MS）. High-temperature-activated carbon was used to filter Hg contained in the carrier gas, which reduced the Hg background signal by 48% and also lowered the detection limit of the analysis. Fractionation and mass discrimination effects existing in the ICP-MS analytical processes were corrected using an internal reference T1 in conjunction with an external reference NIST SRM 610. The proposed method was used to an- alyze the Pb isotopic compositions of chalcopyrite, pyrite, and sphalerite from the Dulong Sn-Zn-In polymetallic ore district. The results showed that in this ore district, the sulfide minerals and different grains of the same sulfide mineral show a large variation in Pb content up to 1000-fold. The studied pyrites show relatively higher Pb contents and homogeneous Pb isotopic compositions, whereas the sphalerites have low Pb contents but most variable Pb isotopic compositions. It is suggested that the large variation of Pb isotopic composition may reflect a late hydrothermal superimposition on the primary sulfide formation. In addition, radiogenic Pb accumulated by radioactive decay of trace amounts of U over time in the host minerals may also be one of the causes for the large variation range of Pb content and Pb isotopic composition of those low-Pb sphalerites. Chalcopyrite and sphalerite grains with Pb content greater than 10 ppm presented a consistent Pb isotopic distribution, whereas all the sulfide grains with Pb content greater than 100 ppm had consistent Pb isotopic composition within 2s measurement uncertainties. The in-situ analysis of Pb isotopic composition agreed well with the results obtained by conventional chemical methods within 2s measurement uncertainties, indicating that the data obtained by fsLA-MC-ICP-MS are reliable. Additionally, this study indicates that the Pb isotopic composition could truthfully record the source of ore-forming minerals only for sulfide minerals with high Pb content. On the contrary, the Pb isotopic composition of low-Pb sulfide minerals may be affected by trace amounts of U in the host minerals that may lead to a highly radiogenic Pb isotope ratio. Alternatively, it is also possible that late fluid metasomatic overprinting may alter the Pb isotopic compositions.展开更多
基金The National Natural Science Foundation of China(No.60572072,60496311),the National High Technology Researchand Development Program of China (863Program ) ( No.2003AA123310),the International Cooperation Project on Beyond 3G Mobile of China (No.2005DFA10360).
文摘The problem of joint eigenvalue estimation for the non-defective commuting set of matrices A is addressed. A procedure revealing the joint eigenstructure by simultaneous diagonalization of. A with simultaneous Schur decomposition （SSD） and balance procedure alternately is proposed for performance considerations and also for overcoming the convergence difficulties of previous methods based only on simultaneous Schur form and unitary transformations, it is shown that the SSD procedure can be well incorporated with the balancing algorithm in a pingpong manner, i. e., each optimizes a cost function and at the same time serves as an acceleration procedure for the other. Under mild assumptions, the convergence of the two cost functions alternately optimized, i. e., the norm of A and the norm of the left-lower part of A is proved. Numerical experiments are conducted in a multi-dimensional harmonic retrieval application and suggest that the presented method converges considerably faster than the methods based on only unitary transformation for matrices which are not near to normality.
文摘In order to research the danger caused by the rockburst, the electromagnetic emission （EME） in the coal rock was monitored and analyzed. The higher the stress in the coal is, the stronger the deformation and the failure are, and also the signal of the EME will be. The EME is increased by a relatively large margin before the slight shock and rockburst break out at spot. Therefore, some methods to monitor and forecast the danger of rockburst were proposed, including the critical point and devia- tion values, which was by non-contract method. In the end, the observation of EME in Xingfu was used to analyze and forecast the danger level by the rockburst. Then, the measures were proposed to prevent and cure the rockburst.
基金supported by National Key Project of Scientific and Technical Supporting Programs Funded by Ministry of Science & Technology of China in the 11th Five-Year Plan (Grant No. 2007BAC03A12)
文摘Clean Development Mechanism (CDM) has given birth to an international carbon trading market prosperity,which provides developing countries with valuable opportunities to address climate change issues together with economic development and environmental improvement to achieve the sustainable goal. China,as the biggest carbon market,has caught worldwide attention. However,most studies of CDM focus on economics and environmental science,few on its legal problems. Transaction activities are the essence of market mechanism. To protect the benefits of market participators and regulate the market orders,the Contract Law takes this important role along with development of market mechanism. Therefore,this paper only focuses on the carbon market in China,with the assessment of the risks in the CDM development first. The involved contracts will be identified and analyzed to point out the major contract legal issues in Chinese carbon market. In the meantime,this paper further discusses that measurements at both private level and governmental level should be taken to protect and realize the utility and equality of contract in the carbon market.
文摘the amendment of ＂Labor Contract Law＂ ＂and the ＂＂ Provisional Regulation of Labor Dispatch ＂ promote file labor dispatch system foe＇using on ＂equal pay tbr equal work ＂＂ aald ＂three natures＂ and so on in 2013 to promote the establishment of a modern system of labor contract. However. there are still many deficiencies of the relevant provisions and need to perfect it. As a result, the article studies the system of labor dispatch and points oul the problems of the labor dispatch from the background and the stattts and the new rules, and puts forward suggestions for the improvement ot the system of labor dispatch. Hope the labor dispatch system can maintain the interests of the three parties and have a more rapid development in our country.
文摘A vector autoregressive model was developed for a sample of container carrier time charter rates. Although the series of time charter rates are themselves found non-stationary, thus precluding the use of many modeling methodologies, evidence provided by co-integration tests points to the existence of stable long-term relationships between the series. An assessment of the forecasts derived from the model suggests that the spec-ification of these long-term relationships does not improve the accuracy of long-term forecasts. These results are interpreted as a corroboration of the efficient market hypothesis.
文摘A homotopy-Newton hybrid method is proposed for predicting azeotropes, in which the set of homotopy equations with larger convergent domain is solved firstly to generate the better initial guess, then Newton algorithm is used to solve the azeotrope equations. It has been proved through some illustrative examples that the hybrid method has concurrently the advantages of the wide range of convergence, flexible demand for initial guess and good smoothness of iterative process as the homotopy algorithm, and the rapid convergent speed and high accuracy as Newton′s method. So the hybrid method is a prospective approach to predicting the azeotropes of nonideal mixtures.
文摘Most aspects of construction projects mainly fall under contractual regime. However, when things go wrong such as when the project is abandoned for various reasons, they may create two different scenarios： a contract that is breached and a fixed structure that is left on the land which may constitute an incomplete benefit that is acquired by one of the parties. The transfer of such benefit is initially made with a legal ground, but that ground has since ceased to exist. If some aspect of that benefit cannot be recovered under a contract, enrichment rules may be competent to solve the problem. How to measure the different aspects of that enrichment is however a problem that may have different interpretations according to different conceptions of the foundations of enrichment liability in a particular legal system. This article explores the measures of enrichment in such cases of failed bilateral contracts scenarios working from South African perspective. It argues that in cases of failed bilateral contracts generating an enrichment situation, sanctioning a dual measure of enrichment in a legal system may be an appropriate avenue.
文摘To provide a risk-sharing mechanism that encourages a component supplier and a manufacturer to expand their production capacity of components and products, many researches on SCM suggested that it is better for the SC players to connect a long-term contract with flexible preconditions before doing the decision-making of production capacity. With considering of the uncertainty of demand and integrity problems between SC players, it is difficult to set reasonable preconditions. As a result, under-investment problems still occur frequently. In this paper, after we had discussed the decision-making of production capacity with the preconditions by analyzing the character of the players, we verified the under-investment problem of the supply chain. In order to clarify the optimum preconditions to alleviate the under-investment problem, we also analyzed the relations between preconditions and supply capacity of the whole supply chain. In the last part of this paper, we proposed a method of preconditions setting in such uncertain situations.
基金upported by National Natural Science Foundation of China(Grant No.60672085)“Taishan Scholarship”Construction Engineering
文摘This paper investigates the synchronization and circuit implementation of a new hyperchaotic Lorenz system. This system is generated by controlling a generalized Lorenz system to hyperchaotic by introducing a linear state feedback controller to its scored equation. Global synchronization of the new hyperchaotic systems can be achieved by unidirectonally linear coupled approach, which is illustrated by both numerical simulations and electronic circuit experiments.
基金Supported by the National Special Research Fund for Non-Profit Marine Sector(Nos.201005033,201105002)the National Natural Science Foundation of China(No.U1133001)+1 种基金the National High Technology Research and Development Program of China(863 Program)(No.2012AA091801)the NSFC-Shandong Joint Fund for Marine Science Research Centers(No.U1406401)
文摘The application of ensemble optimal interpolation in wave data assimilation in the South China Sea is presented. A sampling strategy for a stationary ensemble is first discussed. The stationary ensemble is constructed by sampling from 24-h-interval significant wave height differences of model outputs over a long period,and is validated with altimeter significant wave height data,indicating that the ensemble errors have nearly the same probability distribution function. The background error covariance fields expressed by the ensemble sampled are anisotropic. Updating the static samples by season,the seasonal characteristics of the correlation coefficient distribution are reflected. Hindcast experiments including assimilation and control runs are conducted for the summer of 2010 in the South China Sea. The effect of ensemble optimal interpolation assimilation on wave hindcasts is validated using different satellite altimeter data(Jason-1 and 2 and ENVISAT) and buoy observations. It is found that the ensemble-optimal-interpolation-based wave assimilation scheme for the South China Sea achieves improvements similar to those of the previous optimal-interpolation-based scheme,indicating that the practical application of this computationally cheap ensemble method is feasible.
文摘The main objective of this study was to investigate the presence of natural endophytic Beauveria bassiana within date palm tissues using molecular technique and measure their field efficacies in controlling Dubas bug, Ornmatissus lybicus （Deberg）. Two entomopathogenic B. bassiana isolates （MARD 108 and 100） were isolated from date palm, Phoenix dactylifera L. leaves; in addition, one isolate （MARD 92） originally from soil was identified to have endophytic property. Concentration of 1 × 10^9 conidia/mL of each of three endophytic isolates was used in field experiments targeting Dubas bug nymphs via injection tree trunks. The results indicated that the high mortality rates reached 92%, 96% and 100% with infliction of the three endophytic isolates after 15 d from the treatment. The successful establishment of the fungal isolates in the date palm tissue was determined using B. bassiana species-specific primer for the first time via using conventional polymerase chain reaction （PCR） amplification technique before and after injection, and the positive gel band representation was the identification signs. The novel results depicted for the first time the presence of natural endophytic B. bassiana isolates within date palm tissues and their field efficacies in controlling Dubas bug, O. lybicus （Deberg） infestation.
基金the National Natural Science Foundation sponsored project, "The Employment Effects of Labor Regulation on Rural Migrant Workers and Administrative Policies: With a Focus on Minimum Wage Rises" (劳动规制对农民工的就业影响及管理政策研究:以提高最低工资标准为例)sponsored by the General Administration of Quality Supervision, Inspection and Quarantine and the Renmin University of China, "The Impact of Foreign Technical Measures on China’s Export" (国外基础性贸易措施对我 们出口的影响)
文摘Non-linear programming analysis suggests that employment effects of minimum wage regulation are the result not only of the regulation itself but also of the external regulatory environment. At a certain level, the regulatory environment intensifies the effect on employment of minimum wage regulation. Empirical studies based on survey data from 439 enterprises in Guangdong and Fujian show that minimum wage rises had a greater impact on the employment of rural migrant workers in 2008 than in 2007, although no significant change was observed among workers who were permanent urban residents. Further analysis shows that the greater impact on migrant workers derives mainly from the strengthened regulatory environment brought about by the Employment Contracts Law. The permanent urban workforce has not been similarly affected because their interests have been given priority under the dual employment system. This reminds us that the employment effects of the Employment Contracts Law may be realized indirectly through other regulatory measures, including strengthened minimum wage regulation.
文摘Article 4 of the Labor Contract Law lays down the right of the Staff and Workers＇ Representative Congress （SWRC） to deliberate on the formulation of （intra-enterprise） work regulations, but this has become a ＂soft＂ law in judicial practice. The judicial criteria for judging the validity of work regulations are in essence determined by the judge＇s judgment on their reasonableness. As an important embodiment of Chinese politics, economics and culture, the transformation of the SWRC that accompanied the market economy has not negated its value as an indigenous traditional resource. The SWRC does not just enjoy deliberative rights in the formation of regulations, as clearly specified in constitutional law, but also has rights under the law in local legislation and practice. Hence the system of work regulations is neither a unilateral decision on the part of management nor a contract, but rather an autonomous norm developed through the SWRC mechanism. Given the mandatory nature of Article 4 of the Labor Contract Law, regulations will only be valid after they havegone through a democratic process. The further development of the theory of normative system formation should endow the SWRC with greater rights and integrate it smoothly with the collective contract system to standardize collective labor relations.
文摘Since its very release in March 2006, the opinion-soliciting draft of the Labor Contract Law has sparked considerable controversy. Indeed, the whole process of its consideration, promulgation, implementation and amendment has been accompanied by complex questioning and a diversity of views. This has to some extent reduced appreciation of the value of the Labor Contract Law itself. In the economy and society, rational legal construction can minimize the damage done by the failure of private negotiations. The Labor Contract Law is dedicated to changing the action space of workers and enterprises in order to promote efficiency in production and equity in distribution. With the aim of constructing and developing harmonious and stable labor relations, the law seeks to encourage workers and enterprises to forge communities of shared interests, shared undertakings, a common destiny and a joint mission; it is here that the true value of the law lies. In terms of institutional design, in building a system that categorizes workplace employment, the Labor Contract Law makes a breakthrough in workplace labor relations management and sets up an innovative labor relations management system with Chinese characteristics. Faced with the new normal in labor relations, we should make further progress in strengthening democraticenterprise management, optimizing the developmental environment of business, etc.
基金This paper is a phased result of the National Social Science Fund of China major project“Research on the Governance of Social Risk Systems in Metropolitan Cities”(16ZDA083).It is also funded by the Research and Innovation Team Construction Project“Design and Application of a Social Risk Management Decision Support System”of East China University of Science and Technology.
文摘Our survey data on migrant workers in the Pearl River Delta region from 2006 to 2010 and recent fieldwork show that the enactment of the Labor Contract Law encouraged both the signing of labor contracts and the long-term nature of these contracts, making enterprises more willing to increase investment in human capital, increase employee insurance and welfare and give more attention to human-centered management, leading eventually to the establishment of an internal labor market that incorporates migrant workers. This is accompanied by progress in human resources management techniques and strategies in SMEs and private enterprise. Although the Labor Contract Law to some extent intensified the tendency for migrant workers to undertake collective protection of their rights, the establishment of an internal labor market could also ease the tension between labor and capital and lead to employees becoming more rational and prudent in safeguarding their rights, thereby providing a basis for a transition from confrontation to win-win cooperation between labor and capital. The Labor Contract Law has accelerated and strengthened the trend of individualized development in China’s labor relations. The protection of labor rights through the two channels of the 'rigid' legal system and 'flexible' internal management can help reduce the risk of large-scale collective labor disputes and establish a relatively harmonious institutionalized labor relationship.
基金the 57th batch of funding projects(No.2015M570067)supported by the China Postdoctoral Science Fund
文摘The Labor Contract Law classifies collective contracts as special labor contracts, ignoring the fundamental differences between collective contracts and labor contracts. This has plunged it into jurisprudential obstacles and institutional difficulties. In terms of the main entities, efficacy, dispute settlement mechanisms, etc. collective contracts have their own institutional characteristics. They should be incorporated into the legislative framework for collective labor relations in future legislation, and should link up with trade unions, collective consultation and collective dispute settlement to form a complete system of collective labor law.
文摘As the civil law expression of internet plus transactions, the legal relations in online trading platform transactions constitute a complex aggregate of legal relationships composed of groups of legal relations. Specifically, they consist of three basic interlinked legal relationships： Contract relations for online trading platform services between the platform provider and the seller or service provider, and between the platform provider and the consumer. This includes the sales or service contract relations between the triad of the seller, the service provider and the consumer. These relations contain five kinds of major content, viz., the provision of transaction space, the publishing of transaction information, price escrow payment, distribution and delivery of the commodity, and transaction credit evaluation. They involve three forms of supplementary legal relations： the supplementary contract relationship between the platform provider and a third party payment institunon; between the seller and third party credit reporting agency; and between the seller and a logistics enterprise. The three forms of supplementary contractual legal relations are set up to act on the major contents of the basic legal relationships in online transactions. On the basis of the online trading platform service contract relationships between the platform provider and the triad of the seller, the service provider and the consumer, the flow of the above- mentioned legal relations centers on the contract of sales or service set up between the seller, the service provider and the consumer to accomplish the aim of the online transaction, meet social needs and boost economic development.
基金supported by the National Natural Science Foundation of China(Grant Nos.41427804,41421002,41373004)Program for Changjiang Scholars and Innovative Research Team in University(Grant No.IRT1281)the MOST Research Foundation from the State Key Laboratory of Continental Dynamics(Grant No.BJ08132-1)
文摘An in-situ microanalysis of Pb isotopic compositions in sulfide minerals is carried out by using femtosecond laser-ablation multi-collector inductively coupled plasma mass spectrometry （fsLA-MC-ICP-MS）. High-temperature-activated carbon was used to filter Hg contained in the carrier gas, which reduced the Hg background signal by 48% and also lowered the detection limit of the analysis. Fractionation and mass discrimination effects existing in the ICP-MS analytical processes were corrected using an internal reference T1 in conjunction with an external reference NIST SRM 610. The proposed method was used to an- alyze the Pb isotopic compositions of chalcopyrite, pyrite, and sphalerite from the Dulong Sn-Zn-In polymetallic ore district. The results showed that in this ore district, the sulfide minerals and different grains of the same sulfide mineral show a large variation in Pb content up to 1000-fold. The studied pyrites show relatively higher Pb contents and homogeneous Pb isotopic compositions, whereas the sphalerites have low Pb contents but most variable Pb isotopic compositions. It is suggested that the large variation of Pb isotopic composition may reflect a late hydrothermal superimposition on the primary sulfide formation. In addition, radiogenic Pb accumulated by radioactive decay of trace amounts of U over time in the host minerals may also be one of the causes for the large variation range of Pb content and Pb isotopic composition of those low-Pb sphalerites. Chalcopyrite and sphalerite grains with Pb content greater than 10 ppm presented a consistent Pb isotopic distribution, whereas all the sulfide grains with Pb content greater than 100 ppm had consistent Pb isotopic composition within 2s measurement uncertainties. The in-situ analysis of Pb isotopic composition agreed well with the results obtained by conventional chemical methods within 2s measurement uncertainties, indicating that the data obtained by fsLA-MC-ICP-MS are reliable. Additionally, this study indicates that the Pb isotopic composition could truthfully record the source of ore-forming minerals only for sulfide minerals with high Pb content. On the contrary, the Pb isotopic composition of low-Pb sulfide minerals may be affected by trace amounts of U in the host minerals that may lead to a highly radiogenic Pb isotope ratio. Alternatively, it is also possible that late fluid metasomatic overprinting may alter the Pb isotopic compositions.
