To find out the reason of resulting in the crease recovery of a fabric and provide theoretical guidance for designing a new material with good creasing-recovery property,the relationship between the creasing-recovery ...To find out the reason of resulting in the crease recovery of a fabric and provide theoretical guidance for designing a new material with good creasing-recovery property,the relationship between the creasing-recovery force and the crease-recovery angle of a woven fabric was investigated by self-setup experimental device.The results show that the crease-recovery angle of a woven fabric is correlated with the creasing-recovery force of the fabric in a linear relation.Furthermore,it is found that the internal stress is the principal force of affecting the creasing-recovery property of a woven fabric.In addition,the relationship between the tensile property of a woven fabric and the creasing-recovery property of the fabric has also been investigated,showing that the lower relaxation velocity of tensile stress of a fabric is,the better creasing-recovery property of the fabric has.展开更多
We analyze in detail the quantum phase transitions that arise in models based on the u（2） algebraic description for bosonic systems with two types of scalar bosons. First we discuss the quantum phase transition that...We analyze in detail the quantum phase transitions that arise in models based on the u（2） algebraic description for bosonic systems with two types of scalar bosons. First we discuss the quantum phase transition that occurs in hamiltonians that admix the two dynamical symmetry chains u（2） u（1） and u（2） so（2） by diagonalizing the problem exactly in the u（1） basis. Then we apply the coherent state formalism to determine the energy functioned. Finally we show that a quantum phase transition of a different nature, but displaying similar characteristics, may arise also within a single chain just by including higher order terms in the hamiltonian.展开更多
This paper focuses on the innovation as a key factor in entrepreneurial cycles particularly in those who deal with production. Taking into the consideration the whole entrepreneurial cycle, the innovation is the most ...This paper focuses on the innovation as a key factor in entrepreneurial cycles particularly in those who deal with production. Taking into the consideration the whole entrepreneurial cycle, the innovation is the most sensitive factor that determines the products giving to them the ＂soul＂ and in most cases separating successful from unsuccessful ones on the market. In the era of global market, competitiveness became one of the most important factors for each company. Within an enterprise, the engineers are those who are qualified and responsible to take care about the competitiveness of the products that company produce. They have to be introduced not just about the technology in sense of ＂how to made smt.＂, but even rather ＂bow to make the better product than others＂. ＂Better＂ could be involved in product various characteristics as quality, functionality, durability and any other ones which will convince the customer to buy it. The engineers should be more focused on the ＂value＂ involved in the product rather than on its ＂materialization＂, simply because the customers buy the value for him/her. By neglecting innovation, companies become just a simple economy subjects, without entrepreneurial elements, losing competitiveness and endanger their future. In long-term perspective, the permanent innovations implemented in the products and services as well as in the production process enable companies to became or remain competitive on the market.展开更多
文摘To find out the reason of resulting in the crease recovery of a fabric and provide theoretical guidance for designing a new material with good creasing-recovery property,the relationship between the creasing-recovery force and the crease-recovery angle of a woven fabric was investigated by self-setup experimental device.The results show that the crease-recovery angle of a woven fabric is correlated with the creasing-recovery force of the fabric in a linear relation.Furthermore,it is found that the internal stress is the principal force of affecting the creasing-recovery property of a woven fabric.In addition,the relationship between the tensile property of a woven fabric and the creasing-recovery property of the fabric has also been investigated,showing that the lower relaxation velocity of tensile stress of a fabric is,the better creasing-recovery property of the fabric has.
文摘We analyze in detail the quantum phase transitions that arise in models based on the u（2） algebraic description for bosonic systems with two types of scalar bosons. First we discuss the quantum phase transition that occurs in hamiltonians that admix the two dynamical symmetry chains u（2） u（1） and u（2） so（2） by diagonalizing the problem exactly in the u（1） basis. Then we apply the coherent state formalism to determine the energy functioned. Finally we show that a quantum phase transition of a different nature, but displaying similar characteristics, may arise also within a single chain just by including higher order terms in the hamiltonian.
文摘This paper focuses on the innovation as a key factor in entrepreneurial cycles particularly in those who deal with production. Taking into the consideration the whole entrepreneurial cycle, the innovation is the most sensitive factor that determines the products giving to them the ＂soul＂ and in most cases separating successful from unsuccessful ones on the market. In the era of global market, competitiveness became one of the most important factors for each company. Within an enterprise, the engineers are those who are qualified and responsible to take care about the competitiveness of the products that company produce. They have to be introduced not just about the technology in sense of ＂how to made smt.＂, but even rather ＂bow to make the better product than others＂. ＂Better＂ could be involved in product various characteristics as quality, functionality, durability and any other ones which will convince the customer to buy it. The engineers should be more focused on the ＂value＂ involved in the product rather than on its ＂materialization＂, simply because the customers buy the value for him/her. By neglecting innovation, companies become just a simple economy subjects, without entrepreneurial elements, losing competitiveness and endanger their future. In long-term perspective, the permanent innovations implemented in the products and services as well as in the production process enable companies to became or remain competitive on the market.
