发布求助
文献互助 智能选刊 最新文献

Bulletin of the Military University of Technology最新文献

筛选
英文 中文
Recent trends in studies on polymer — dispersed liquid crystal composites 聚合物分散液晶复合材料的研究进展
Bulletin of the Military University of Technology Pub Date : 2019-06-28 DOI: 10.5604/01.3001.0013.3000
S. Kłosowicz
{"title":"Recent trends in studies on polymer — dispersed liquid crystal composites","authors":"S. Kłosowicz","doi":"10.5604/01.3001.0013.3000","DOIUrl":"https://doi.org/10.5604/01.3001.0013.3000","url":null,"abstract":"The paper presents a review of results of studies in the field of PDLC material science and physics obtained during last few years and shows the main fields of interest in that subject. It covers an application of new polymers and liquid crystalline materials used to prepare those composites, modification of their properties by different inorganic and organic dopants as well as new optical properties. The evolution of scientific interest regarding PDLC composites in recent years is shown.\u0000Keywords: material science, composites, polymer-dispersed liquid crystals, optics, electrooptics.\u0000\u0000","PeriodicalId":232579,"journal":{"name":"Bulletin of the Military University of Technology","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114252486","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: 1
Application of graphene materials in tribology — analysis of state of the problem and the preliminary research 石墨烯材料在摩擦学中的应用——问题现状分析及初步研究
Bulletin of the Military University of Technology Pub Date : 2019-06-28 DOI: 10.5604/01.3001.0013.3006
I. Dąbrowski, P. Nogas, T. Kałdoński, B. Nasiłowska, M. Djas
{"title":"Application of graphene materials in tribology — analysis of state of the problem and the preliminary research","authors":"I. Dąbrowski, P. Nogas, T. Kałdoński, B. Nasiłowska, M. Djas","doi":"10.5604/01.3001.0013.3006","DOIUrl":"https://doi.org/10.5604/01.3001.0013.3006","url":null,"abstract":"Present publication describes one of the most interesting materials discovered in recent years, which is graphene. This paperwork contains information about graphene’s structure, properties, applications and methods of synthesis. The special attention has been given to tribological applications of graphene structures, including the usage of the graphene itself in the composite materials, protective integuments, and additives to lubricants (oils, greases). This publication was based on the information and research results published in the international articles and preliminary researches realized at the Military University of Technology as well. The research results concern the changes of basic lubricants’ parameters, which contain different amount of graphene oxide (or comparatively of hexagonal boron nitride). The results obtained during the tests indicate that graphene oxide could improve lubricating abilities of oils and greases.\u0000Keywords: tribology, lubricants, graphene, graphene oxide.","PeriodicalId":232579,"journal":{"name":"Bulletin of the Military University of Technology","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129858148","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
Code comprehension as a distributed construction of meanings 代码理解是一种分布式的意义结构
Bulletin of the Military University of Technology Pub Date : 2019-06-28 DOI: 10.5604/01.3001.0013.3001
P. Cofta
{"title":"Code comprehension as a distributed construction of meanings","authors":"P. Cofta","doi":"10.5604/01.3001.0013.3001","DOIUrl":"https://doi.org/10.5604/01.3001.0013.3001","url":null,"abstract":"Code comprehension, a sub-domain of reverse engineering and software maintenance, does not provide useful explanation of common situations where developers, distributed and isolated from each other in time and space, come to a similar understanding of a code. This limits our ability to develop tools to support this popular aspect of code comprehension. This paper investigates this phenomenon from the perspective of sociology, intentionally distancing itself from the dominating psychological approach. The analysis, conducted mostly from the standpoint of social systems theory, highlights that as the construction of meanings is subjective, in the absence of any significant interactions, the dominant influence on the construction of meanings comes from current states of various social systems to which the developer belongs to. Thus, the similarity of meanings (hence a better comprehension of the code) can be achieved by understanding systems to which the developer belongs to and by coordinating their states.\u0000Keywords: computer science, code comprehension, social systems theory, reverse engineering, software maintenance\u0000\u0000","PeriodicalId":232579,"journal":{"name":"Bulletin of the Military University of Technology","volume":"18 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121014370","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
Evaluation of tribological properties of lubricants based on Hersey’s–Stribeck’s characteristics 基于Hersey - s - stribeck特性的润滑油摩擦学性能评价
Bulletin of the Military University of Technology Pub Date : 2019-06-28 DOI: 10.5604/01.3001.0013.3007
Arkadiusz Aranowski, T. Kałdoński, K. Gocman, T. Kałdoński
{"title":"Evaluation of tribological properties of lubricants based on Hersey’s–Stribeck’s characteristics","authors":"Arkadiusz Aranowski, T. Kałdoński, K. Gocman, T. Kałdoński","doi":"10.5604/01.3001.0013.3007","DOIUrl":"https://doi.org/10.5604/01.3001.0013.3007","url":null,"abstract":"The content of the paper presents the results of investigations of selected lubricants. The study led to obtaining Hersey’s-Stribeck’s curves and to comparison of the lubricating properties of lubricants belonging to different groups such as hydrocarbon oils, perfluoropolyether oils (PFPE), and ionic liquids. The following liquids were evaluated for tribological properties: PAO-6 polyalphaolefin oil base, CJ 006 ionic liquid (3-methyl-1-propylpyridinium bis(trifluoromethylsulphonyl)-imide) and Fomblin Y 04 synthetic perfluoropolyether oil. The research was carried out using the universal nano/micro tribotester (UNMT-CETR, CA, USA) at the Department of Tribology, Surface Engineering and Service Fluids Logistics, Faculty of Mechanical Engineering, Military University of Technology. The study consisted of friction of a ball bearing steel (100 Cr 6) with a round specimen of a certain roughness (ball-on-disc). Friction occurred in rotational motion of the specimen, at different rotational speeds at constant radius and at constant load (0.25 N; 5 N; 50 N). The friction node was lubricated with the tested liquid.\u0000Keywords: tribology, friction factor, Hersey’s−Stribeck’s characteristics.\u0000\u0000","PeriodicalId":232579,"journal":{"name":"Bulletin of the Military University of Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126281632","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
Stability analysis of steel frames according to Eurocode 3 根据欧洲规范3的钢框架稳定性分析
Bulletin of the Military University of Technology Pub Date : 2019-06-28 DOI: 10.5604/01.3001.0013.3008
Sylwia Pogonowska-Płatek, W. Dornowski
{"title":"Stability analysis of steel frames according to Eurocode 3","authors":"Sylwia Pogonowska-Płatek, W. Dornowski","doi":"10.5604/01.3001.0013.3008","DOIUrl":"https://doi.org/10.5604/01.3001.0013.3008","url":null,"abstract":"In the paper, the qualitative and quantitative comparison of EC3 methods to verify the global stability of the structure is presented. The steel portal frame subjected to varied loads is considered. The initial global sway imperfection and the initial local bow imperfections of member frame are taken into account. The sensitivity of a structure to the 2nd order effects is assessed indirectly using the elastic critical load. The elastic critical load of a frame is calculated according to the buckling mode. The 2nd order effects are taken into account using the finite element method.\u0000Keywords: second order effects, steel frame, global stability, critical load.\u0000\u0000","PeriodicalId":232579,"journal":{"name":"Bulletin of the Military University of Technology","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115380481","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
Construction of a local location program on the basis of “decision tree” 基于“决策树”的局部定位方案构建
Bulletin of the Military University of Technology Pub Date : 2019-06-28 DOI: 10.5604/01.3001.0013.3009
P. Duer, S. Duer, Pawel Wrzesien
{"title":"Construction of a local location program on the basis of “decision tree”","authors":"P. Duer, S. Duer, Pawel Wrzesien","doi":"10.5604/01.3001.0013.3009","DOIUrl":"https://doi.org/10.5604/01.3001.0013.3009","url":null,"abstract":"The article presents the problems of building a damage location program in a technical facility based on the theory of the “decision tree”. The basis in such a decision-making process is the functional and diagnostic analysis of the tested technical device. The result of this analysis process is a set of basic (functional) elements with a set of weighting factors assigned to them. An algorithm of fault location is developed in the theory of the “decision tree” in the process of locating faults in the tested vehicle power supply system.\u0000Keywords: technical diagnostics, diagnostic reasoning, artificial intelligence.\u0000\u0000","PeriodicalId":232579,"journal":{"name":"Bulletin of the Military University of Technology","volume":"19 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125947799","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
Adaptive method of similarity detection of user profiles on online social networks 在线社交网络用户资料相似度检测的自适应方法
Bulletin of the Military University of Technology Pub Date : 2019-06-28 DOI: 10.5604/01.3001.0013.3002
M. Zabielski, Z. Tarapata, R. Kasprzyk
{"title":"Adaptive method of similarity detection of user profiles on online social networks","authors":"M. Zabielski, Z. Tarapata, R. Kasprzyk","doi":"10.5604/01.3001.0013.3002","DOIUrl":"https://doi.org/10.5604/01.3001.0013.3002","url":null,"abstract":"The paper presents a method, based on graph and network theory, which allows to detect cloned user profiles on Online Social Networks. Moreover, an idea of similarity containers, which gives an opportunity to incorporate importance and context of data into a model, was introduced. The presented solutions were adapted to the idea of simulation environment, which will allow to detect a profile cloning process before that activity will be completely performed by an attacker.\u0000Keywords: Online Social Networks, user profile cloning, violation of privacy on the web.\u0000\u0000","PeriodicalId":232579,"journal":{"name":"Bulletin of the Military University of Technology","volume":"25 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120911385","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: 2
E-mail recovery from websites using Gravatar 使用Gravatar从网站恢复电子邮件
Bulletin of the Military University of Technology Pub Date : 2019-06-28 DOI: 10.5604/01.3001.0013.3003
Przemysław Rodwald
{"title":"E-mail recovery from websites using Gravatar","authors":"Przemysław Rodwald","doi":"10.5604/01.3001.0013.3003","DOIUrl":"https://doi.org/10.5604/01.3001.0013.3003","url":null,"abstract":"Although the Internet has not been created for anonymity, many users posting comments on blogs hope that they will remain anonymous. The article presents an attack on revealing the e-mail addresses of users posting comments on the sample website using Gravatar. This attack aims to make readers aware of the fact that by posting comments on sites using Gravatara services, we are exposed to the disclosure of our e-mail addresses and sometimes even of our real identity.\u0000Keywords: Gravatar, deanonimization, e-mail, MD5 hash function\u0000\u0000","PeriodicalId":232579,"journal":{"name":"Bulletin of the Military University of Technology","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124735405","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: 2
Influence of tensile softening of concrete on crack development and failure in concrete and reinforced concrete beams 混凝土受拉软化对混凝土和钢筋混凝土梁裂缝发展和破坏的影响
Bulletin of the Military University of Technology Pub Date : 2019-03-29 DOI: 10.5604/01.3001.0013.1481
M. Słowik
{"title":"Influence of tensile softening of concrete on crack development and failure in concrete and reinforced concrete beams","authors":"M. Słowik","doi":"10.5604/01.3001.0013.1481","DOIUrl":"https://doi.org/10.5604/01.3001.0013.1481","url":null,"abstract":"In the paper, the own test results were presented. The experimental investigation was focused at determining the cracking and load capacity of beams made of concrete. The beams were characterized by different longitudinal reinforcement ratio from zero — plain concrete beams, through low ratio 0.12% — slightly reinforced concrete beams, middle ratio 0.9% — typical reinforced concrete beams, up to the ratios 1.3% and 1.8% — higher reinforced concrete beams. On the basis of the performed experiments and the results of numerical calculations, the process of crack’s formation and crack’s development in plain concrete, slightly reinforced concrete and reinforced concrete beams with different reinforcement ratio was described. When discussing cracking process in the beams, the contribution of strain softening of tensile concrete in the microcracked zone on the character of beams’ failure was analysed as well.\u0000Keywords: civil engineering, concrete and reinforced concrete members, cracking and load capacity.\u0000\u0000","PeriodicalId":232579,"journal":{"name":"Bulletin of the Military University of Technology","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134635666","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: 1
Properties analysis of filtration materials with nanofibers addition 纳米纤维对过滤材料性能的影响
Bulletin of the Military University of Technology Pub Date : 2019-03-29 DOI: 10.5604/01.3001.0013.1475
T. Dziubak, Yurii Yendzheiovskyi
{"title":"Properties analysis of filtration materials with nanofibers addition","authors":"T. Dziubak, Yurii Yendzheiovskyi","doi":"10.5604/01.3001.0013.1475","DOIUrl":"https://doi.org/10.5604/01.3001.0013.1475","url":null,"abstract":"Nanofiber properties, methods of their production, and areas of their application have been presented. Parameters describing filtration materials with nanofibers addition were presented, and analyzed. Methodology for testing aerodynamic characteristics as well as characteristics of: efficiency, accuracy, and filter cartridges resistance with nanofibers addition, depending on the dust mass loading km were developed. Characteristic filtration parameters of the materials with nanofibers addition are presented. Five filtration inserts, differing in the filtration material with nanofibers addition, and without this layer were made. Test conditions were developed as well as a test stand was prepared. Aerodynamic characteristics tests of filter cartridges as well as filtration efficiency, accuracy, and flow resistance of standard (cellulose) cartridge, and the ones with nanofibers addition were performed. The positive effect of nanofiber layer on efficiency, and accuracy increase in the inlet engine air filtration was confirmed. Granulometric composition of air dust was assessed on a standard filter cartridge, and on a cartridge with nanofibers addition.\u0000Keywords: engine, air filter, nanofibers, filtration efficiency and accuracy, flow resistance, dust mass loading, grain size.\u0000\u0000","PeriodicalId":232579,"journal":{"name":"Bulletin of the Military University of Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125857882","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信