in this paper we study finding the $(k,l)$-core problem on a tree which the vertices have positive or negative weights. let $t=(v,e)$ be a tree. the $(k,l)$-core of $t$ is a subtree with at most $k$ leaves and with a diameter of at most $l$ which the sum of the weighted distances from all vertices to this subtree is minimized. we show that, when the sum of the weights of vertices is negative, t...

Abstract In Malaysia, road pavements are frequently damaged by the accumulation of water on surface caused heavy rain, due to humid climate. The presence within asphaltic concrete mixture particles may impede their workability. Exposure towards natural phenomenon such as rain can be main cause related inside asphalt pavements. To improve conditions for users, it is necessary consider alternativ...

Laston sebagai lapisan aus/AC-WC (Asphaltic Concrete-Wearing Course) atau lapis permukaan adalah suatu bagian dari perkerasan yang berada pada dimana bersentuhan langsung dengan ban kendaraan, tersebut harus memiliki ketahanan terhadap air, serta ketahahanan perubahan cuaca. Oleh karena itu campuran beraspal ini diperhatikan, apabila kurang baik maka dapat mengakibatkan terjadinya kerusakan dal...

background: core needle biopsy (cnb) with histological findings is regarded as one of the most important diagnostic measures that make preoperative assessment and planning for appropriate treatment possible. the aim of this study was to determine the sensitivity and specificity of core biopsy results in our patients with benign and malignant breast lumps, especially for borderline breast lesion...