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Survey on recent advances in IoT application layer protocols and machine learning scope for research directions

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Digital Communications and Networks 2022年第5期8卷 727-744页

作者： praveen kumar Donta Satish Narayana Srirama Tarachand Amgoth chandra Sekhara Rao Annavarapu Department of Computer Science and Engineering Indian Institute of Technology(Indian School of Mines)Dhanbad826004India School of Computer and Information Sciences University of HyderabadHyderabad500046India Mobile&Cloud Lab Institute of Computer ScienceFaculty of Science and TechnologyUniversity of Tartu50090Estonia

The Internet of Things(IoT)has been growing over the past few years due to its flexibility and ease of use in real-time *** IoT's foremost task is ensuring that there is proper communication among different types of applications and devices,and that the application layer protocols fulfill this ***,as the number of applications grows,it is necessary to modify or enhance the application layer protocols according to specific IoT applications,allowing specific issues to be addressed,such as dynamic adaption to network conditions and ***,several IoT application layer protocols have been enhanced and modified according to application ***,no existing survey articles focus on these *** this article,we survey traditional and recent advances in IoT application layer protocols,as well as relevant real-time applications and their adapted application layer protocols for improving *** changing the nature of protocols for each application is unrealistic,machine learning offers means of making protocols intelligent and is able to adapt *** this context,we focus on providing open challenges to drive IoT application layer protocols in such a direction.

关键词： Internet of things Machine learning Application layer Request-response protocols Publish-subscribe protocols

Rhododendrons in Indian Himalayan Region: Diversity and Conservation

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American Journal of Plant Sciences 2010年第2期1卷 131-137页

作者： K. chandra sekar Sunil kumar Srivastava 不详

The genus Rhododendron of Indian Himalayan Region (IHR) has been enumerated in the present paper. A total of 87 species, 12 subspecies and 8 varieties of Rhododendrons recorded in IHR, among these 6 species and one subspecies are reported from Western Himalaya. The maximum concentration of 86% observed in Arunachal Pradesh (75 species). The species of Rhododendrons exhibit significant diversity in habit and broad range of distribution from the altitude of 800-6000 m. and the best range is observed in 3001-3500 m altitudes. In analysis revealed 20 taxa are endemic, 30 are rare, 24 are threatened / endangered, 3 are vulnerable and 47 taxa have to be assessed. The major threats to rhododendrons are deforestation and unsustainable extraction for firewood and incense by local people has been discussed.

关键词： Rhododendrons Indian Himalayan Region Ericaceae India

Role of Cartilage as a Graft Material for Tympanic Membrane and in Middle Ear Reconstruction

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International Journal of Otolaryngology and Head & Neck Surgery 2015年第2期4卷 66-72页

作者： Anant Chouhan Bhuvnesh kumar Singh praveen chandra Verma Department of ENT JLN Medical College Ajmer India

Objective: The work was planned to evaluate the results of cartilage graft in the surgical treatment of chronic suppurative otitis media. Study Design: A prospective study. Materials and Methods: The present study was a prospective study of tympanoplasties and tympanomastoid surgeries performed on 100 patients. The main outcome measures were both anatomical and functional in form of graft incorporation and postoperative hearing function. Results: Cartilage was used as tympanic membrane and/or ossicle graft in the cases. There were no immediate postoperative or long term complications of surgery except for 10 cases in which there was a failure of graft uptake. There was a 7.6-decibel (dB) improvement in mean air conduction threshold post-operatively. A mean closure of average air bone gap of 8.4 decibels (dB) was noted which was statistically significant. Conclusion: The cartilage graft is a very effective option for the repair of the conducting mechanism of the ear with good take-up rates, less chances of rejection or extrusion and very few significant complications. The thickness of cartilage creates stiffness that is more resistant than the fascia to the anatomic deformities caused by negative middle ear pressure thus improving the long term integrity of the graft.

关键词： Cartilage Graft Pure Tone Audiometry Air Bone Gap

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印度楝树：用于制革原料皮防腐的绿色材料

北京皮革（中外鞋讯）（下） 2010年第3期 84-89页

作者： Vasudevan Preethi（） Veerappan Rathinasamy（） Narasimhan Kannan（） chandra Babu（） praveen kumar Sehgal（）辜海彬（译）中央皮革研究生物制品实验室 AdyarChennai 600020Tamil Nadu印度中央皮革制革厂部 AdyarChennai 600020Tamil Nadu印度不详

固体食盐（氯化钠）广泛用于原料皮的防腐，因此，大量的氯化钠以总溶解固体（TDS）的形式排放在制革浸水工序的废水中。在印度Chennai中央皮革研究所（CLRI），我们尝试使用一种基于草本植物印度楝树（一般的印度名称为Neem）的防腐剂... 详细信息

固体食盐（氯化钠）广泛用于原料皮的防腐，因此，大量的氯化钠以总溶解固体（TDS）的形式排放在制革浸水工序的废水中。在印度Chennai中央皮革研究所（CLRI），我们尝试使用一种基于草本植物印度楝树（一般的印度名称为Neem）的防腐剂配方来取代食盐，用于山羊皮的防腐。在CLRI的试验成功后，我们又在有当地居民收集大量山羊皮来出售的印度农村地区，对该防腐剂配方成功进行了实地试验。用该配方防腐的皮和盐腌皮，其蓝湿革和坯革的物理化学性能和感官性能都差不多。使用印度楝树进行防腐，可显著减少浸水废液中的TDS，而且在用于防腐后，还可将它从皮上刮下来，堆肥处理，制成肥料，作为花肥使用，从而为其处理提供了很好的解决办法。

关键词：印度楝树防腐剂原料皮绿色材料制革总溶解固体物理化学性能试验成功