Traffic efficiency is commonly regarded as the most important target for control of signalized intersections. However, from fairness point view, it can be argued that all vehicles at a intersection should have equal passing opportunities. In this correspondence paper, two-stage fuzzy logic model an isolated has been proposed, where both traffic and considered simultaneously. At first stage, green-phase selector developed to select subsequent green phase. second green-time adjustor proposed...

Abstract A branch and bound algorithm is described for optimal cyclic scheduling in a robotic cell with processing time windows. The objective to minimise the cycle by determining exact on each machine which limited within window. problem formulated as set of prohibited intervals time, usually applied fixed times. Since both bounds these are linear expressions times, we divide into series subsets transform enumerating non-prohibited subset. This enumeration procedure completed an efficient...

Purpose The purpose of this study is to enhance the comprehensive understanding roles resource investments, explicit contracts and three components guanxi (i.e. renqing , ganqing mianzi ) in asymmetric research development (R&D) partnerships. Treating dependence asymmetry as a multidimensional construct, examines moderating effects these elements on relationships between resources information opportunism. Design/methodology/approach was executed by issuing questionnaires R&D managers...

Purpose Collaborative research and development have remained a pertinent mechanism for conducting technological innovations. With the lens of knowledge-based view (KBV), this study aims to examine role changes in knowledge couplings network cohesion elevate innovation performance. Design/methodology/approach Data analysis has been performed on 53,459 patents through regression with random effects. These independent joint are extracted from Derwent Innovation Database. Findings explicate that...

Abstract This paper proposes an exact algorithm to solve a cyclic hoist scheduling problem in printed circuit board (PCB) electroplating facility, where multi-type parts with fixed processing times are processed the same time and not allowed wait tanks or on hoist. Finding optimal schedule such production line is equivalent finding two types of related sequences: part input sequence move sequence. We show that entering decision variables problem. formulate our using notion prohibited...

This paper proposes a tabu search (TS) algorithm to solve an NP-hard cyclic robotic scheduling problem. The objective is find robot schedule that maximises the throughput. We first formulate problem as linear program, provided move sequence given, and reduce searching for optimal sequence. solution space can be divided into some specific subspaces by maximal number of works-in-process. Then, we propose TS synchronously perform local searches in each subspace. To speed up our algorithm,...

Purpose Many studies have investigated dynamic positions and their importance, but there is less attention paid to how enter more central positions. Interorganizational relationships are an important factor in network structural change. In Chinese society, firms allocate significant human, financial material resources towards cultivating guanxi. The purpose of this study explore whether the three aspects guanxi, namely renqing, ganqing xinyong, can make central, examine mediating role...

Purpose Previous studies examined the effect of inter-organizational collaboration relationships on organizational innovation. However, most focused configuration network from static perspective, and few influence structure stability an organization's exploratory innovation ego-network perspective. This study addresses this research gap by focusing its Design/methodology/approach The empirical setting is smartphone 2004 to 2017. We selected one-site schemes panel data patents Derwent...