Hard brittle materials such as ceramics and crystals are commonly utilized in various industries, including information technology, mechanical engineering, semiconductors. These materials, known for their high brittleness hardness but low fracture toughness, pose challenges efficient high-quality machining. Current abrasive machining techniques involve rough grinding, fine polishing processes, with the latter being most time-consuming accounting over half of total time. Improving processing...

Abstract The slow growth of the permanently settled migrants in host cities poses new challenges for sustainability China's future urbanization. Given growing importance homeownership, this paper clarifies migrants' settlement intentions into three mutually exclusive patterns, including de facto permanent intention through long‐term temporary and short‐term intention. Based on matched micro‐ macro‐level data, examines influence city economic development housing prices these patterns. results...

The financing function of land in China has been extensively documented, but little research explored the role finance real estate market affecting local government debt. In light recent simultaneous increase China’s risk and debt over past two years, a pressing need to reevaluate significance arisen. Thus, this study explores relationship between risk. data were collected from 224 Chinese cities 2010 2019. found that prosperity significantly promotes expansion Land acts as mediator...

Bid riggers often are accused of colluding and violating competition law, but there limited instruments with which antitrust authorities can detect them. In collusive bidding, bid may consider the impacts exogenous factors, including environmental firm-related on bidding prices. Knowing aids in comprehending riggers' response to changes external environment finding an effective way inhibit collusion. this study, a conceptual framework is proposed present factors based utility theory merged...

Housing prices in China have experienced rapid growth recent decades, and land finance has long been discussed as an important factor this growth. In paper, we explore the interactions among housing prices, transfer revenue infrastructure investment from perspective of government expenditure. Based on panel data 35 large medium-sized cities 2000 to 2017, empirical results show that revenue, are causally related result positive feedback. The grouped regression greater impacts eastern region...

The factors affecting migrants’ settlement in host cities have been widely discussed, but the impact of housing financial support is still under exploration. This paper explores effect Housing Provident Fund (HPF), which a highly debated markedly important policy China, on intentions. Based data from China Migrants Dynamic Survey (CMDS), our results reveal that HPF significantly improves intentions by increasing purchase robustness test further show expanding coverage has positive...

Reasonable evacuation strategies are important in reducing casualties the event of a fire. In this work, we conduct simulation fire large public building based on information modeling technology to find best strategy. We identify tolerance limit evacuees case as basis using dynamics simulator software. The following four proposed and simulated: stratified only by stairs, mainly stairs supplemented elevators, holistic elevators. study college canteen shows that if 10% (mainly elderly people...

Long-term collective saving schemes are widely adopted in many emerging economies to support residents' housing consumption. This article evaluates the effect of Housing Provident Fund (HPF), one most prominent policies China, on income redistribution beyond its role. Based micro survey data, our results suggest that current HPF policy design widens gap between participants and nonparticipants aggravates inequality across whole population; further simulation expanding coverage has an...

Property tax reform in China has long been discussed regarding the agenda. However, nationwide implementation remains stalled, with no clarity when and how property taxes will be levied. Uncertain expectations affect household housing assets, most important assets of Chinese residents. To explore impact levy on allocation such we construct a theoretical model use four waves Household Finance Survey Baidu index data for estimation. significantly reduce proportion to total especially...

As an intuitive human-computer interaction, hand gesture recognition has attracted a lot of attention in computer vision. This paper presents novel method for real time recognition, which first extracts skeleton by propagating wave starting from the maximal inscribed circle palm, then refines using least square fitting method. We propose angle feature vector that captures essential features skeleton, based on is recognized template matching. Our coarse-to-fine extraction can better handle...

With a view to the procurement relationship between prefabricated component (PC) production enterprise and its upstream raw material supplier, an MRP-guided collaborative optimization model for order quantity in supply chain was constructed based on thought of just-in-time (JIT) by following BOM constraint MRP principle PC production. The traditional butterfly algorithm (BOA) improved combining Levy flight strategy, mixed mutation operation simplex method (SM), thus proposing LMSMBOA...