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Robust graph‐based localization for industrial Internet of things in the presence of flipping ambiguities

CAAI Transactions on Intelligence Technology 2023年第4期8卷 1140-1149页

作者： mian imtiaz ul haq Ruhul Amin Khalil Muhannad Almutiry Ahmad Sawalmeh Tanveer Ahmad Nasir Saeed Faculty of Electrical Engineering Swedish College of Engineering and TechnologyWah CanttPakistan Department of Electrical Engineering Faculty of Electrical and Computer EngineeringUniversity of Engineering and TechnologyPeshawarPakistan Department of Electrical Engineering Remote Sensing UnitNorthern Border UniversityArarSaudi Arabia Data Science and Artificial Intelligence Department‐College of Science and Information Technology Irbid National UniversityIrbadJordan Innovation Education and Research Center for On‐Device AI Software(Bk21) Department of Computer Science and EngineeringChungnam National UniversityDaejeonRepublic of Korea Department of Electrical and Communication Engineering United Arab Emirates University(UAEU)Al AinUnited Arab Emirates

Localisation of machines in harsh Industrial Internet of Things(IIoT)environment is necessary for various ***,a novel localisation algorithm is proposed for noisy range measurements in IIoT *** position of an unknown machine device in the network is estimated using the relative distances between blind machines(BMs)and anchor machines(AMs).Moreover,a more practical and challenging scenario with the erroneous position of AM is considered,which brings additional uncertainty to the final position ***,the AMs selection algorithm for the localisation of BMs in the IIoT network is *** those AMs will participate in the localisation process,which increases the accuracy of the final location ***,the closed‐form expression of the proposed greedy successive anchorization process is derived,which prevents possible local convergence,reduces computation,and achieves Cramér‐Rao lower bound accuracy for white Gaussian measurement *** results are compared with the state‐of‐the‐art and verified through numerous simulations.

关键词： Cramér‐Rao lower bound greedy successive anchorization industrial internet of things localization

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Interactions of Cationic Surfactant Cetyl-trimethyl ammonium bromide with Ammonium nitrate:Surface and Thermodynamic Studies

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Chinese Journal of Chemical Physics 2021年第4期34卷 480-486,I0003,I0004页

作者： Noor Rehman Zia ul haq Hidayat ullah Inamullah mian Xian Li Department of Chemistry Shaheed BB UniversitySheringalDir(Upper)18050Pakistan Department of Chemistry Gomal UniversityD.I.Khan 27100Pakistan Key Laboratory of Coal Clean Conversion and Chemical Process Autonomous Region College of Chemistry and Chemical EngineeringXinjiang UniversityUrumqi 830000China

The study of interactions between surfactant and salt in aqueous solutions has attracted significant interest in recent years because of their widespread applications and relatively complex *** work reports the systematic study of surface phenomenon and self-aggregation behavior of cationic surfactant cetyltrimethyl ammonium bromide(CTAB)with ammonium nitrate(NH_(4)NO_(3))*** and thermodynamic properties of cationic surfactant CTAB with NH_(4)NO_(3)were investigated at different temperatures using different techniques such as conductometry and surface *** surface tension measurement was carried out to find out the critical micelle concentration,free energy of adsorption,free energy of micellization,minimum area per molecule,and surface excess *** study reveals that the process of micellization is spontaneous and exothermic in *** measurement was carried out to determine critical micelle concentration,degree of ionization and degree of counter ion *** of NH_(4)NO_(3)to the surfactant solutions increase the values of degree of ionization and degree of counter ion binding,although it lowers the values of critical micelle concentration showing that the process of micellization is more favorable and *** study is very helpful to develop better understanding about interaction between electrolyte and surfactant,which are used in many applications and in different processes(e.g.,pharmaceutical,industrial foaming,drug solubilization,oil recovery,and medium for metal nanoparticle formation).

关键词： Surface tension Conductivity NH_(4)NO_(3)salt Cetyl-trimethyl ammonium bromide surfactant

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西藏南部晚白垩世坎潘期碳同位素偏移及其意义

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地球化学 2007年第3期36卷 279-285页

作者：李祥辉 H. C. Jenkyns 王成善胡修棉赵兵黄永建成都理工大学油气藏地质与开发工程国家重点实验室南京大学地球科学系江苏南京210093 Department of Earth Sciences University of OxfordOxfordUK 中国地质大学成都理工大学沉积地质研究院

对西藏南部定日地区特提斯喜马拉雅晚白垩世坎潘期海相沉积进行高分辨率碳氧同位素分析,获得较为丰富的实验数据。分析表明,δ13C值在坎潘期呈现二高二低变化:坎潘早期较低,平均值约1.2‰～1.3‰;坎潘中期持续升高,平均值1.9‰～2.0‰,... 详细信息

对西藏南部定日地区特提斯喜马拉雅晚白垩世坎潘期海相沉积进行高分辨率碳氧同位素分析,获得较为丰富的实验数据。分析表明,δ13C值在坎潘期呈现二高二低变化:坎潘早期较低,平均值约1.2‰～1.3‰;坎潘中期持续升高,平均值1.9‰～2.0‰,并形成正偏高原,到剖面196m位置达到最大值约2.3‰;坎潘晚期变低,平均值在1.2‰～1.4‰范围;坎潘末期再一次升高,均值达2.0‰左右。其中,坎潘中期的正偏高原全球对比研究暗示可能与南半球特别是南极大陆高温和高降雨量有关。根据δ13C值偏移幅度和时间跨度,在坎潘早期、中期和晚期识别出三次负偏事件Ⅰ、Ⅱ、Ⅲ,分别对应于有孔虫***带下部(剖面162～166m)、***带下部(188～192m)和***带-***带界线(226～230m),时间跨度平均小于0.74Ma,它们显示了与欧洲同期δ13C值偏移事件的可比性和与haq等全球I型层序低海平面的相关性。

关键词：碳同位素古气候短期海平面坎潘期晚白垩世西藏南部

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