Tracking problems, including unknown number of targets, target trajectories behaviour and uncertain motion of targets in the surveillance region, are challenging issues. It is also difficult to estimate cross-over targets in heavy clutter density environment. In addition, tracking algorithms including smoothers which use measurements from upcoming scans to estimate the targets are often unsuccessful in tracking due to low detection probabilities. For efficient and better tracking performance, the smoother must rely on backward tracking to fetch measurement from future scans to estimate forward track in the current time. This novel idea is utilized in the joint integrated track splitting (JITS) filter to develop a new fixed-interval smoothing JITS (FIsJITS) algorithm for tracking multiple cross-over targets. The FIsJITS initializes tracks employing JITS in two-way directions: Forward-time moving JITS (fJITS) and backward-time moving JITS (bJITS). The fJITS acquires the bJITS predictions when they arrive from future scans to the current scan for smoothing. As a result, the smoothing multi-target data association probabilities are obtained for computing the fJITS and smoothing output estimates. This significantly improves estimation accuracy for multiple cross-over targets in heavy clutter. To verify this, numerical assessments of the FIsJITS are tested and compared with existing algorithms using simulations.

This study investigated on the conflict types, causes, and asymmetry, which can be witnessed between physicians and nurses who are the essential members of the hospital. The data was collected through semi-structured interviews of physicians and nurses who worked within the same department. The results of this exploratory research illustrated significant indications of task conflicts, relationship conflicts, and process conflicts, in accordance with Jehn’s(1997) study, among the two professions. Furthermore, there were some conflicts related to the typical in-role behavior caused by factors such as misperformance due to the lack of knowledge/skill and the partial completion or nonexecution of order along both occupations. Additionally, indications of conflict type asymmetry between physicians and nurses resulting from the differences of power and perception, and asymmetry on conflict causes even when experiencing the same type of conflict existed. The implications and the limitations of this study with invitation of suggestions to remedy such conflicts are discussed.

This competency model that fits medical school faculties in Korea can be used to design and develop selection plans, education programs, feedback tools, diagnostic evaluation tools, and career plan support programs.

No abstract

Start-ups organizations are increasing rapidly. To overcome “liability of newness,” it is essential for entrepreneurs to compose the right co-founding team. Based on the review of 57 journal articles on start-up co-founding teams and new venture teams, we found that the composition of the team, especially diversity among team members, was frequently studied. However, previous research has only focused on surface-level diversity such as gender, age, functional background, previous experience. Only a very few studies investigated deep-level diversity such as co-founding team members’ value, personality or thinking style. The present study explored what type of diversity is required in start-ups. Since this topic is rarely studied, we first conducted a qualitative study by interviewing with nineteen start-up founders and venture capitalists in Study 1. As a result we found that four individual characteristic factors (extraversion, agreeing to different idea, risk taking, optimism) and four work-related factors (business opinion, speed oriented, big-picture oriented, time perspective) were the key component of deep-level diversity. In Study 2, we conducted a quantitative study to empirically investigate these aspects by a survey to thirty start-up related individuals. The result confirmed that the diversity were required for six aspects deducted from Study 1. For the other factors of optimism and speed orientation, frequency tendency supported Study 1’s result.