Constraining the Equation of State of Neutron Stars through GRB X-Ray Plateaus

The unknown equation of state (EoS) of neutron stars (NSs) is puzzling because of rich non-perturbative effects of strong interaction there. A method to constrain the EoS by using the detected X-ray plateaus of gamma-ray bursts (GRBs) is proposed in this paper. Observations show some GRB X-ray plateaus may be powered by strongly magnetized millisecond NSs. The properties of these NSs should then satisfy: (i) the spin-down luminosity of these NSs should be brighter than the observed luminosity of the X-ray plateaus; (ii) the total rotational energy of these NSs should be larger than the total energy of the X-ray plateaus. Through the case study of GRB 170714A, the moment of inertia of NSs is constrained as $I>1.0\times 10^{45}\left ( \frac{P_{\rm cri}}{1\;\rm ms} \right )^{2} \;\rm g\cdot cm^{2}$, where $P_{\rm cri}$ is the critical rotational period that an NS can achieve. The constraint of the radii of NSs according to GRB 080607 is shown in Table 1.Comment: 6 pages, 2 figute, The Astrophysical Journal, 886:87, 2019 December 1, https://doi.org/10.3847/1538-4357/ab490

Value curve and customer journey map : the case of Uniplaces and Zizabi

Hoje em dia, a natureza da economia de serviços passou da natureza transacional para relacionamentos baseados na experiência. As pessoas trabalham em todos os tipos de indústria e em diferentes áreas, todos eles querem oferecer experiências aos seus clientes. A experiência do cliente tem recebido uma atenção significativa mais do que nunca. As empresas começam a perceber que oferecer uma experiência bem desenhada aos clientes pode aumentar a satisfação do cliente e eventualmente afetar o desempenho dos seus negócios. A empresa utiliza o mapa de viagem do cliente para descrever o processo através do qual o cliente percorre um conjunto de pontos de contato para melhorar o seu serviço. No entanto, argumentamos que a curva de valor em que se situa a proposta de valor de uma empresa também afeta a tomada de decisões dos clientes em determinadas fases do mapa de viagem do cliente. Neste estudo, tendemos a explorar como a curva de valor de uma empresa pode influenciar o seu mapa de viagem do cliente através das duas empresas de plataformas portuguesas. Achamos que o mapa de viagem do cliente pode ser influenciado diretamente e fortemente pela curva de valor. Além disso, descobrimos a partir desses dois casos que uma forte parceria e recurso humanos valiosos também podem afetar o sucesso da empresa no seu mercado-alvo.Today, the nature of service economy has shifted from transactional nature to experience-based relationships. Everyone from different industries and sectors wants to provide experiences. Customer experience has received significant attention, more than ever before. Companies start to realize that delivering a well-designed experience to customers can increase customer satisfaction and eventually affect their business performance. Company employs customer journey map which describes the process where customer flow through a set of touch points during the service encounter to help them improve its service. However, we argue that the value curve where lies value proposition of a company also affects customers’ decision-making during certain phases of customer journey map. In this following study, we explore how value curve of a company can influence its customer journey map by studying two Portuguese platform companies. We find that customer journey map can be influenced directly and strongly by value curve. Furthermore, we discovered from these two cases that a strong partnership and valuable human resources can also affect company’s success in its target market