Abstract Covariant quantization of a multi-pronged open bosonic string junction is studied beyond static analysis. Its excited states are described by set ordinary bosons as well some sets twisted on the worldsheet. The system characterized certain large algebra type that includes single Virasoro subalgebra. By properly defining physical states, one can show there no ghosts in Hilbert space.

Unit Donor Darah (UDD) Kota Madiun melayani transfusi darah sekaligus menyediakan dari permintaan yang berasal Bank Rumah Sakit (BDRS) maupun langsung di wilayah dan sekitarnya. Pada tahun 2020, UDD telah berhasil memenuhi 97% darah, namun karena penyebaran virus Covid-19 semakin meluas maka diperlukan peramalan sampai akhir 2021. Berdasarkan analisis data pada sebelumnya diperoleh model terbai...

design of the new apartment buildings in iran, has been faced to a decline of quality of local life and an improper interaction between inside-outside of residential spaces. this interaction can be affected by the quality of in-between spaces in different scales of apartment buildings in residential developments. in-between spaces of apartment houses refer to a hierarchy of the main entrance, o...

One of the most important issues in all stages of mining study is capital cost estimation. Determination of capital expenditure is a challenging issue for mine designers. In recent decade, quite a few number of studies have focused on proposing estimation models to predict mining capital cost. However, these efforts have not achieved to a predictor model with reliable range of error. Both of ov...

‎‎Many authors such as Amini-Harandi‎, ‎Rezapour ‎et al., ‎Kadelburg ‎et al.‎‎, ‎have tried to find at least one fixed point for quasi-contractions when $alphain[frac{1}{2}‎, ‎1)$ but no clear answer exists right now and many of them either have failed or changed to a lighter version‎. In this paper‎, ‎we introduce some new strict fixed point results in the set of multi-valued '{C}iri'{c}-gener...

plastics, one of the most abundant materials in the world today, are one of the main sources of pollution. people’s perception of using and disposing plastic bags is primordial as they tend to be a major part of household solid waste. this study aims to determine community’s perception of usage and disposal of plastic bags in eastern ethiopia. a quantitative cross-sectional study has been condu...