In PET imaging listmode is an alternative for projections to store the acquisition data with more accuracy. The reconstruction starting from the listmode format requires different approaches than projection based algorithms. The ML-EM algorithm was modified to start from the listmode format. For listmode data mage degrading effects can be classified into two groups. Internal LOR effects (like a...

The massive die-off of the long-spined sea urchin, Diadema antillarum, a significant reef grazer, in the mid 1980s was followed by phase shifts from coral dominated to macroalgae dominated reefs in the Caribbean. While Diadema populations have recovered in some reefs with concomitant increases in coral cover, the additional threat of increasing temperatures due to global climate change has not ...

Emerging market multinational enterprises (EMNEs) seem to face almost continuous negative media coverage in many Western countries. Our study scrutinizes this phenomenon examine why and how EMNEs are confronting increasing coverage. We empirically the British newspaper reported on governmental banning of Huawei from fifth-generation network development UK. findings suggest that liabilities orig...

BACKGROUND Therapeutic drug monitoring (TDM) aid therapeutic decision making in patients with inflammatory bowel disease (IBD) who lose response to anti-TNF therapy. Our aim was to evaluate the frequency and predictive factors of loss of response (LOR) to adalimumab using TDM in IBD patients. METHODS One hundred twelve IBD patients (with 214 TDM measurements, CD/UC 84/28, male/female 50/62, m...

This paper presents an architecture based on web services for learning object repositories (LOR). This architecture enables to facilitate the indexation process by integration of a LOR into applications where learning objects are either produced or consumed. Also, it is designed to provide interoperability with other LORs.

This paper estimates the markup for the Mexican manufacturing sector to detect the impact of trade liberalization on market power. Using Hall’s proposal that states that a procyclical Solow residual is an indication of market power, this research estimates the markup for different periods to detect the change in market power after trade liberalization was implemented. We account for the potenti...

MOST PEOPLE AGREE that stock prices sometimes behave in strange ways. Going beyond this simple observation typically proves more difficult. For at least the past quarter century, economists have been well aware that the variation of stock prices does not nicely match the familiar bell-shaped normal distribution.1 The problem is too many extreme movements. Very large increases or decreases would...

We consider a two-class M " A2 IMI'11 preemptive priority queue in which there are two essential on-line decisions that have to be taken. The first is the decision to either accept or reject new type-lor type-2 jobs. The second is the decision to abort jobs, i.e., to remove any type-lor type-2 jobs from the system. We show that there exist optimal threshold policies for these two types of decis...

A learning object repository (or LOR) is presented as a mechanism which facilitates the organisation and reuse of collaborative learning scenarios, using metadata and ontologies. The main design concern here is making it easy for authors and learners to work with the LOR while creating or using learning environments. Three views of the repository are proposed: a reusable storage structure, a dy...