Discovery最新文献_第2页

Digitization in logistics and its effect on sustainability in Nigeria 尼日利亚物流数字化及其对可持续性的影响

Discovery Pub Date : 2024-04-23 DOI: 10.54905/disssi.v60i334.e15d1420

Adetayo Olaniyi Adeniran, Gbemileke Tobi Oyeniran, Adedayo Ayomide Adeniran, Muraina Joseph Mosunmola

引用次数: 0

Leaf litter decomposition and nutrient dynamics in tree plantations at Kurukshetra, Haryana, India 印度哈里亚纳邦库鲁克谢特拉植树造林区的落叶分解和养分动态

Discovery Pub Date : 2024-04-23 DOI: 10.54905/disssi.v60i334.e4d1408

Pooja Arora

引用次数: 0

An improved energy-efficient data clustering in UAV-Aided Wireless Sensor Networks for uneven topology 无人机辅助无线传感器网络中针对不均匀拓扑的改进型高能效数据聚类

Discovery Pub Date : 2023-12-09 DOI: 10.54905/disssi.v59i333.e114d1355

Fagbohunm Griffin Siji

{"title":"An improved energy-efficient data clustering in UAV-Aided Wireless Sensor Networks for uneven topology","authors":"Fagbohunm Griffin Siji","doi":"10.54905/disssi.v59i333.e114d1355","DOIUrl":"https://doi.org/10.54905/disssi.v59i333.e114d1355","url":null,"abstract":"It is not uncommon to see sensor nodes deployed in an uneven or hilly terrain. This can be found in many parts of Nigeria. In the same vain, sensor nodes may be deployed in very hostile areas such as in northern parts of Nigeria where insurgents are heavily present. In areas such as those stated above, the use of unmanned aerial vehicles can be used for energy-efficient data collection from the scattered sensor nodes. Unmanned Aerial Vehicles operating at low altitudes can be used to lower the energy consumption of the wireless sensor network by using an intelligent data collection methodology to distribute the UAVs for data collection from the nodes. This paper proposes an energy-efficient and optimized data aggregation (EEODA) scheme in UAV-assisted wireless sensor network for hilly and uneven terrain is designed, using UAVs as data collection points. This can be achieved through the following steps, firstly, a distributed clustering algorithm based on reinforcement learning was proposed to organize the wireless sensor nodes, secondly, a mono-objective simulated annealing search method will be used to efficiently distribute the UAVs for optimum collection of data from the various cluster heads in the network, thirdly the city section mobility model will be used to compute the optimum position for the UAVs to each of the cluster heads in the network. Simulation results show that EEODA scheme proposed in this paper outperforms the EFDC, the closest-performing algorithm to it with an average of 12%. It also outperforms the other two compared algorithms, LEACH with UAV and HEED with UAV with between 17% and 36%, respectively with performance metrics such as energy consumption of nodes, scalability, delay in data aggregation and collection, control overhead and number of dead nodes in each round of clustering.","PeriodicalId":505009,"journal":{"name":"Discovery","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139184739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Internet addiction's impact on bachelor students' social lives 网瘾对大学生社交生活的影响

Discovery Pub Date : 2023-12-09 DOI: 10.54905/disssi.v59i333.e117d1359

Lal Mani Pokhrel

{"title":"Internet addiction's impact on bachelor students' social lives","authors":"Lal Mani Pokhrel","doi":"10.54905/disssi.v59i333.e117d1359","DOIUrl":"https://doi.org/10.54905/disssi.v59i333.e117d1359","url":null,"abstract":"The internet, a vast global network of interconnected computers, has become an indispensable tool for information access and communication. This study examines the effects of internet addiction on the social lives of bachelor's level students in Nepalgunj. It explores students' attitudes toward interpersonal relationships and self-confidence in self-presentation. While the internet plays a crucial role in enhancing students' global awareness and knowledge, excessive dependence on it can undermine their self-assurance. Data for this study was collected through an online questionnaire distributed via platforms like Google Forms on social media. The findings reveal that 35% of students stay up late to complete college assignments, while 5% do so for family discussions. Additionally, 53% stay awake late primarily for internet browsing, with 7% citing other reasons for their nocturnal activities. The report concludes that excessive internet usage has a negative impact on students' self-assurance, interpersonal skills, and creativity. This dependence hinders social engagement and undermines their ability to participate in face-to-face interactions confidently. Furthermore, internet addiction limits students' creativity, fostering an overreliance on the internet for problem-solving.","PeriodicalId":505009,"journal":{"name":"Discovery","volume":"31 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139184774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of Nitrogen-based fertilizers on fish health: Evaluation of stress factors and immune response 氮肥对鱼类健康的影响：应激因素和免疫反应评估

Discovery Pub Date : 2023-12-09 DOI: 10.54905/disssi.v59i333.e109d1353

Nabajit Mondal, Anirban Ghosh

{"title":"Effects of Nitrogen-based fertilizers on fish health: Evaluation of stress factors and immune response","authors":"Nabajit Mondal, Anirban Ghosh","doi":"10.54905/disssi.v59i333.e109d1353","DOIUrl":"https://doi.org/10.54905/disssi.v59i333.e109d1353","url":null,"abstract":"Increasing demand for food induces the human population to use excessive fertilizers in agricultural practices. A large quantity of Nitrogen fertilizer is used in agricultural fields compared with phosphate and potassium fertilizers, and unabsorbed excess accumulates in water bodies. Nitrogen-based fertilizers are degraded into ammonia and ammonium ions, which are toxic for fish. The gills and skin of fish are the primary sites of toxic exposure, and through gills, ammonia enters into the fish's bloodstream and reaches different organs and tissues. Ammonia exposure to fish has evidence to damage the fish's red blood cells as well as blood stem cells or hematopoietic stem cells in the liver and head-kidney, which are the major fish organs and showed tissue-specific toxicity. Unionized forms of ammonia can efficiently cross cell membranes and exert more toxicity. Ammonia exposure showed oxidative damage, i.e., lipid peroxidation, protein and DNA denaturation and stress hormone-mediated toxicity, which in turn affect the immune system. Ammonia toxicity disrupts the glutamine metabolic pathway, thereby causing cellular proliferation and death, which is associated with an inflammatory response; mediated through inflammatory cytokines like IL-1, IL-8, and TNF release in exposed fish. Present review deals with such lethal impacts of ammonia on fish health, where we are concerned as the direct consumer of fish and fish products.","PeriodicalId":505009,"journal":{"name":"Discovery","volume":"22 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139184847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Inhibition of corrosion of low carbon steel in using the bark and root extracts of Acacia nilotica: Thermodynamic, electrochemical and phytochemical evaluation 使用黑相思树树皮和根提取物抑制低碳钢腐蚀：热力学、电化学和植物化学评估

Discovery Pub Date : 2023-12-09 DOI: 10.54905/disssi.v59i333.e107d1311

Faci Nd, Amaghionyeodiwe Ca, Obi Ai, Yawas D

引用次数: 0

Exploring media-driven dynamics of Adolescent Dietary Behavior: An in-depth analysis of food choice patterns and influences 探索媒体对青少年饮食行为的影响：深入分析食物选择模式和影响因素

Discovery Pub Date : 2023-12-09 DOI: 10.54905/disssi.v59i333.e120d1364

MD Faisal Alam, Jahan Boksh Moral

引用次数: 0

Modified Inverse Lomax Distribution: Model and properties 修正的反洛马克斯分布：模型和特性

Discovery Pub Date : 2023-12-09 DOI: 10.54905/disssi.v59i333.e110d1352

Lal Babu Sah Telee, Ram Suresh Yadav, Vijay Kumar

引用次数: 0

Roost-Colony protection strategy from raiding by enemies in the Indian Flying Fox Pteropus medius (Temminck, 1825) 印度飞狐 Pteropus medius（Temminck，1825 年）的巢穴--群落保护策略，防止敌人袭击

Discovery Pub Date : 2023-12-09 DOI: 10.54905/disssi.v59i333.e118d1358

S. Mallick, Asif Hossain, Srimanta Kumar Raut

引用次数: 0

Influence of weld joint design on mechanical and corrosion properties of welded dissimilar metals 焊点设计对焊接异种金属机械性能和腐蚀性能的影响

Discovery Pub Date : 2023-12-09 DOI: 10.54905/disssi.v59i333.e122d1378

Isiaka Oluwole Oladele, Samuel Olumide Falana, Wasiu Agboladuro Alatishe, Linus Nnubuike Onuh, Samson Oluwagbenga Adelani, Oluwatosin Johnson Ajala

{"title":"Influence of weld joint design on mechanical and corrosion properties of welded dissimilar metals","authors":"Isiaka Oluwole Oladele, Samuel Olumide Falana, Wasiu Agboladuro Alatishe, Linus Nnubuike Onuh, Samson Oluwagbenga Adelani, Oluwatosin Johnson Ajala","doi":"10.54905/disssi.v59i333.e122d1378","DOIUrl":"https://doi.org/10.54905/disssi.v59i333.e122d1378","url":null,"abstract":"This research study makes fundamental observations about dissimilar metal-welded joints, which combine mild steel and aluminum alloy plates, both 6 mm thick. We joined this metal using the shielded metal arc welding (SMAW) process with E308L-16 as the filler metal. We conducted welding on prepared double-V and butt joints and assessed mechanical properties through tensile, impact, and hardness tests. We examined microstructural characteristics using an optical microscope. To investigate the corrosion behavior, we immersed the welded joint in a 3.5 wt% NaCl solution and analyzed it using the potentiodynamic polarization electrochemical method. The results showed that dissimilar weld joints in the double-V configuration outperformed butt joints in tensile and hardness properties. Moreover, the double-V joint displayed more excellent thermodynamic stability in the 3.5 wt% NaCl solution compared to the commonly used butt joint. Consequently, the double-V joint design is the most suitable choice for achieving optimal mechanical and corrosion characteristics in these dissimilar weld joints for engineering applications.","PeriodicalId":505009,"journal":{"name":"Discovery","volume":"26 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139184828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0