Results 81 to 90 of about 26,433 (157)
Efficient One‐Pot Synthesis of Benzothiazole Compounds From Vinamidinium Salts
ChemistryOpen, Volume 15, Issue 4, April 2026.A catalyst‐free one‐pot reaction of vinamidinium salts with benzothiazole hydrazines efficiently produces 1,3‐bis((3‐methylbenzo[d]thiazol‐2(3H)‐ylidene)hydrazineylidene)propan‐2‐ol (BBTA) and 1‐((1Z,3E)‐1‐(dimethylamino)‐3‐(((Z)‐3‐methylbenzo[d]thiazol‐2(3H)‐ylidene)hydrazineylidene)prop‐1‐en‐2‐yl)pyridin‐1‐ium (DMBT) derivatives.This simple method ...
Zeinab khosravi +4 more
wiley +1 more source
A model for determining whether a firm should exercise multiple real options individually or simultaneously [PDF]
We develop a model for determining whether a firm should exercise two real options individually or simultaneously. The simultaneous exercise of both options has positive synergy, such as economies of scale, scope, and networks, while separate exercise of
Michi Nishihara
core
Fractional-Order Stress Relaxation Model for Unsaturated Reticulated Red Clay Slope Instability
Fractal and FractionalTriaxial suction-controlled relaxation tests were performed on unsaturated reticulated red clay from a highway cut slope to quantify the coupled influence of matric suction (50–200 kPa), net confining pressure (100–300 kPa), and axial strain (2–8%) on ...
Chuang Zhang, Jianzhong Li
doaj +1 more source
Real Options Valuation of Abandoned Farmland [PDF]
I investigate the decision-making process of an owner of abandoned farmland that is currently restricted to agricultural use but will be available for nonagricultural use in the future.
Michi Nishihara
core
Fractional Derivative Creep Model of Salt Rock
工程科学与技术, 2014 :The creep property of the salt rock is an important determinant of deep underground repository of energy for long-term operation.New fractional derivative creep model was built by using the Abel dashpot and Abel dashpot with strain triggered based on ...
吴斐, 刘建锋, 边宇, 周志威
doaj
The effects of costly exploration on optimal investment timing [PDF]
This paper investigates a principal-agent model in which an owner (principal) optimizes a contract with a manager (agent) delegated to undertake an investment project. In the model, we explore the effects of costly exploration by which the manager learns
Michi NISHIHARA, Takashi SHIBATA
core
Underground SpaceSince the classical element model cannot describe the nonlinear characteristics of rock during the entire compressive creep process, nonlinear elements and creep damage are generally introduced in the model to resolve this issue.
Tianbin Li +5 more
doaj +1 more source
Fractional Order Analysis of Creep Characteristics of Sandstone with Multiscale Damage
MathematicsDeep mining is often accompanied by complex geological conditions, which can cause damage to the coal seam roof surrounding rock, thereby reducing its safety and stability.
Shuai Yang +4 more
doaj +1 more source
Hybrid or Electric Vehicles? A Real Options Perspective [PDF]
This paper investigates the decision of an automaker concerning the alternative promotion of a hybrid vehicle (HV) and a full electric vehicle (EV). We evaluate the HV project by considering the option to change promotion from the HV to the EV in the ...
Michi NISHIHARA
core