We incorporate large losses risks into the DeM arzo et al.(2012) model of dynamic agency and the q theory of investment.The large losses risks induce losses costs and losses arising from agency conflicts during the la...We incorporate large losses risks into the DeM arzo et al.(2012) model of dynamic agency and the q theory of investment.The large losses risks induce losses costs and losses arising from agency conflicts during the large losses prevention process.Both of them reduce firm’s value,distort investment policy and generate a deeper wedge between the marginal and average q.In addition,we study the implementation of the contract to enhance the practical utility of our model.The agent optimally manages the firm’s cash flow and treats the cash reservation and credit line as the firm’s financial slack,and hedges the productivity shocks and large losses shocks via futures and insurance contracts,respectively.展开更多
Among cases of spinal cord injury are injuries involving the dorsal column in the cervical spinal cord that interrupt the major cutaneous afferents from the hand to the cuneate nucleus(Cu)in the brainstem.Deprivatio...Among cases of spinal cord injury are injuries involving the dorsal column in the cervical spinal cord that interrupt the major cutaneous afferents from the hand to the cuneate nucleus(Cu)in the brainstem.Deprivation of touch and proprioceptive inputs consequently impair skilled hand use.展开更多
We measured macro-bending losses for two large mode area photonic crystal fibers. Experimental results show that macro-bending loss and loss window are dependent on the parameter d/∧ and number of air-holes ring in t...We measured macro-bending losses for two large mode area photonic crystal fibers. Experimental results show that macro-bending loss and loss window are dependent on the parameter d/∧ and number of air-holes ring in the cladding.展开更多
A novel coupled quantum well structure - quasi-symmetric coupled quantum well (QSCQW) is proposed. In the case of low applied electric field (F = 25 kV/cm) and low absorption loss (a ≈ 100 cm^-1), a large field...A novel coupled quantum well structure - quasi-symmetric coupled quantum well (QSCQW) is proposed. In the case of low applied electric field (F = 25 kV/cm) and low absorption loss (a ≈ 100 cm^-1), a large field-induced refractive index change (for TE mode, △n = 0.0106; for TM mode, △n = 0.0115) is obtained in QSCQW structure at operating wavelength λ = 1550 nm. The value is larger by over one to two order of magnitude compared to that in a rectangular quantum well (RQW) and about 50% larger than that of five-step asymmetric coupled quantum well (FACQW) structure under the above work conditions.展开更多
Nuclear reactor safety(NRS)and the branch accident analysis(AA)constitute proven technologies:these are based on,among the other things,long lasting research and operational experience in the area of water cooled nucl...Nuclear reactor safety(NRS)and the branch accident analysis(AA)constitute proven technologies:these are based on,among the other things,long lasting research and operational experience in the area of water cooled nuclear reactors(WCNR).Large break loss of coolant accident(LBLOCA)has been,so far,the orienting scenario within AA and a basis for the design of reactors.An incomplete vision for those technologies during the last few years is as follows:Progress in fundamentals was stagnant,namely in those countries where the WCNR were designed.Weaknesses became evident,noticeably in relation to nuclear fuel under high burn-up.Best estimate plus uncertainty(BEPU)techniques were perfected and available for application.Electronic and informatics systems were in extensive use and their impact in case of accident becomes more and more un-checked(however,quite irrelevant in case of LBLOCA).The time delay between technological discoveries and applications was becoming longer.The present paper deals with the LBLOCA that is inserted into the above context.Key conclusion is that regulations need suitable modification,rather than lowering the importance and the role of LBLOCA.Moreover,strengths of emergency core cooling system(ECCS)and containment need a tight link.展开更多
基金Supported by the National Natural Science Foundation of China(11571310 and 71371168)
文摘We incorporate large losses risks into the DeM arzo et al.(2012) model of dynamic agency and the q theory of investment.The large losses risks induce losses costs and losses arising from agency conflicts during the large losses prevention process.Both of them reduce firm’s value,distort investment policy and generate a deeper wedge between the marginal and average q.In addition,we study the implementation of the contract to enhance the practical utility of our model.The agent optimally manages the firm’s cash flow and treats the cash reservation and credit line as the firm’s financial slack,and hedges the productivity shocks and large losses shocks via futures and insurance contracts,respectively.
基金supported by NIH grants NS067017 to HXQNS16446 to JHK
文摘Among cases of spinal cord injury are injuries involving the dorsal column in the cervical spinal cord that interrupt the major cutaneous afferents from the hand to the cuneate nucleus(Cu)in the brainstem.Deprivation of touch and proprioceptive inputs consequently impair skilled hand use.
文摘We measured macro-bending losses for two large mode area photonic crystal fibers. Experimental results show that macro-bending loss and loss window are dependent on the parameter d/∧ and number of air-holes ring in the cladding.
基金This work was supported by the National NaturalScience Foundation of China under Grant No. 60277034,60436020.
文摘A novel coupled quantum well structure - quasi-symmetric coupled quantum well (QSCQW) is proposed. In the case of low applied electric field (F = 25 kV/cm) and low absorption loss (a ≈ 100 cm^-1), a large field-induced refractive index change (for TE mode, △n = 0.0106; for TM mode, △n = 0.0115) is obtained in QSCQW structure at operating wavelength λ = 1550 nm. The value is larger by over one to two order of magnitude compared to that in a rectangular quantum well (RQW) and about 50% larger than that of five-step asymmetric coupled quantum well (FACQW) structure under the above work conditions.
基金the Institutional Funds ofUniversity of Pisa,Italy。
文摘Nuclear reactor safety(NRS)and the branch accident analysis(AA)constitute proven technologies:these are based on,among the other things,long lasting research and operational experience in the area of water cooled nuclear reactors(WCNR).Large break loss of coolant accident(LBLOCA)has been,so far,the orienting scenario within AA and a basis for the design of reactors.An incomplete vision for those technologies during the last few years is as follows:Progress in fundamentals was stagnant,namely in those countries where the WCNR were designed.Weaknesses became evident,noticeably in relation to nuclear fuel under high burn-up.Best estimate plus uncertainty(BEPU)techniques were perfected and available for application.Electronic and informatics systems were in extensive use and their impact in case of accident becomes more and more un-checked(however,quite irrelevant in case of LBLOCA).The time delay between technological discoveries and applications was becoming longer.The present paper deals with the LBLOCA that is inserted into the above context.Key conclusion is that regulations need suitable modification,rather than lowering the importance and the role of LBLOCA.Moreover,strengths of emergency core cooling system(ECCS)and containment need a tight link.