Overview on Energetic Polymers

1995 ◽  
Vol 418 ◽  
Author(s):  
Jacques Boileau
Keyword(s):  
Energetic Materials ◽  
Point Of View ◽  
User Needs ◽  
Polymeric Binder ◽  
Functional Requirements ◽  
Research Projects ◽  
Energetic Polymers ◽  
Polyvinyl Nitrate ◽  
Processing Properties

AbstractEnergetic materials for missiles, gun munitions or pyrotechnic devices often are mixtures in a biphasic form, with a filler and a binder. To satisfy the user needs, an analysis of functional requirements together with constraints (safety, vulnerability, ageing, environment, disposal, price...) is useful to choose a convenient binder. From this point of view numerous synthetic energetic polymers proposed or developed as binders are reviewed with regard to their syntheses, processing, properties and possible uses. These polymers contain explosophore groups: C-NO2 aliphatic or aromatic, ONO2, NNO2, NF2 and N3.Some research projects are suggested. Among them in the list of published polymers, following a NIMIC (NATO) suggestion, note the reason of a development interruption. Some dinitropolystyrene – polyvinyl nitrate mixtures or copolymers could exhibit interesting properties. For unknown reasons, some mixtures of crystalline filler- with polymeric binder, generally in a biphasic form, may also be monophasic for a same composition. What properties are modified between the both forms (e.g. combustion mechanisms, erosion, ideal character of the detonation) ? It is also interesting to pursue into a newly open route to thermo-plastic elastomers.

scholarly journals Removal of Micropollutants by Ozone-Based Processes

Processes ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 1013
Author(s):  
Ján Derco ◽  
Andreja Žgajnar Gotvajn ◽  
Oľga Čižmárová ◽  
Jozef Dudáš ◽  
Lenka Sumegová ◽  
...  
Keyword(s):  
Environmental Sustainability ◽  
Review Paper ◽  
Drinking Water Treatment ◽  
Emerging Pollutants ◽  
Research Trends ◽  
Point Of View ◽  
Priority Substances ◽  
Research Projects ◽  
Harmful Substances ◽  
Emerging Substances

Micropollutants and emerging substances pose a serious problem to environmental sustainability and remediation, due to their widespread use and applications in everyday life. This group of chemicals is diverse but with common toxic and harmful properties. Their concentration in the environment is often very low; however, due to their recalcitrant nature, they are persistent in air, water, and soil. From an engineering point of view, the challenge is not straightforward. It is difficult to remove these contaminants from complex mixtures of substances by conventional methods used in wastewater and drinking water treatment. Ozonation and ozone-based AOPs are accepted processes of degradation of resistant substances or at least enhancement of their biodegradability. The aim of this review paper is to present research trends aimed at solving problems in the research and application of ozone-based processes in the removal of micropollutants from wastewater, thus preventing leakage of harmful substances into surface water, soil, and groundwater and facilitating the reuse of wastewater. Priority substances, micropollutants and emerging pollutants, as well as processes and technologies for their transformation and elimination, are briefly specified. Results obtained by the authors in solving research projects that were aimed at eliminating selected micropollutants by ozonation and ozone-based AOPs are also presented. This review focuses on selected alkylphenols, petroleum substances, and organochlorine pesticides.

scholarly journals Analysis of User Needs on Downloading Behavior of English Vocabulary APPs Based on Data Mining for Online Comments

Mathematics ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 1341
Author(s):  
Tinggui Chen ◽  
Lijuan Peng ◽  
Jianjun Yang ◽  
Guodong Cong
Keyword(s):  
Negative Impact ◽  
Positive Impact ◽  
User Needs ◽  
User Requirements ◽  
Functional Requirements ◽  
User Comments ◽  
Online Comments ◽  
Significant Negative Impact ◽  
Negative Effect ◽  
New Type

With highly developed social media, English learning Applications have become a new type of mobile learning resources, and online comments posted by users after using them have not only become an important source of intellectual competition for enterprises, but can also help understand customers’ requirements, thereby improving product functionalities and service quality, and solve the pain points of product iteration and innovation. Based on this, this paper crawled the online user comments of three typical APPs (BaiCiZhan, MoMoBeiDanCi and BuBeiDanCi), through emotion analysis and hotspot mining technology, to obtain user requirements and then the K-means clustering method was used to analyze user requirements. Finally, quantile regression is used to find out which user needs have an impact on the downloads of English vocabulary APPs. The results show that: (1) Positive comments have a more significant impact on users’ downloads behavior than negative online comments. (2) English vocabulary APPs with higher downloads, both the 5-star user ratings and the increase of emotional requirement have a negative effect on the increase in APP downloads, while the enterprise’s service requirement improvement has a positive effect on the increase of APP downloads. (3) Regarding English vocabulary APPs with average or high downloads, improving the adaptability and Appearance requirements have significant negative impact on downloads. (4) The functional requirements to improve products will have a significant positive impact on the increase in downloads of English vocabulary APPs.

Functional Requirements for Effective Decision Making in Humanrobot Teams: Lessons Learned from Operational Settings

2005 ◽  
Vol 49 (3) ◽  
pp. 452-456
Author(s):  
James Tittle ◽  
William Elm ◽  
Scott Potter
Keyword(s):  
Decision Making ◽  
Information Seeking ◽  
Reference Frames ◽  
Broad Class ◽  
Design Guidelines ◽  
Lessons Learned ◽  
Point Of View ◽  
Functional Requirements ◽  
Urban Search And Rescue ◽  
Robot Teams

Many environments require humans and robots operating together to accomplish complex and dangerous tasks, but technology-centered designs often support robot navigation but not the mission goals of the organization using the robot. Urban Search and Rescue (USAR) is a particularly valuable domain to identify general functional requirements for effective HRI, and our purpose in this paper is to demonstrate how a CSE approach can lead to valuable design guidelines that more effectively support decision making within Human-Robot teams. Our analysis of HRI in USAR lead us to identify several important guidelines for supporting effective coordination for Human-Robot teams: including (i) enable individual problem holders to have direct control over point-of-view to facilitate active information seeking, and (ii) create common reference frames on shared imagery so different problem holders can remotely coordinate information and actions. Designs based on these guidelines will support a broad class of coordinated activities between team members.

scholarly journals Landscape Design of University Campuses and User Satisfaction

2021 ◽  
Author(s):  
Deniz Gozde Ertin Tezgor ◽  
◽  
Beste Karakaya Aytin ◽  
Keyword(s):  
Public Space ◽  
User Satisfaction ◽  
Point Of View ◽  
Green Spaces ◽  
Survey Study ◽  
User Needs ◽  
University Campus ◽  
Art And Design ◽  
University Campuses ◽  
User Space

University campus gardens provide the integrity of the environment with educational buildings, connect the users and buildings, and provide liveable spaces for users. Campuses serve as a public space for academic, administrative and technical staff, especially students, as well as incoming visitors. As a public space, the ability of students to meet all their recreational, social and cultural needs is directly related to the content and designs of the open and green spaces of the campuses. It is essential to ensure the landscape designs of these spaces, in line with the structural and planting design principles, and with the successful composition of the user-space relationship where the user needs and desires are determined. From this point of view, it is aimed to evaluate the landscape designs of the two campuses of Trakya University, where art and design-oriented education is realised, in terms of user satisfaction. For this purpose, it was revealed by a survey that measures the satisfaction of the users of the two campuses where determined the spatial and landscape requirements of design-based education. In the survey, the users' duration and purpose of use of the campus, feelings created by various equipment on users, the usage the building and gardens and the current conditions of the campuses were determined. The frequency percentages of the data obtained in the survey study were evaluated using the SPSS 26.0 program. As a result, suggestions have been developed to improve the current use of the two campus gardens and to ensure the sustainability of the spaces.

Geo-Multi-Agent System Based Webmapping Approach Using Multiple Representation and Generalisation Driven by Domain Ontology

2013 ◽  
Vol 8 (4) ◽  
pp. 48-64
Author(s):  
Khalissa Derbal Amieur ◽  
Kamel Boukhalfa ◽  
Zaia Alimazighi
Keyword(s):  
Web Applications ◽  
Hybrid Approach ◽  
Fast Response ◽  
Domain Ontology ◽  
Point Of View ◽  
User Needs ◽  
Generation Process ◽  
Multiple Representation ◽  
Map Generation ◽  
Multi Agent

Geographic Information (GI) is currently available at any time, from anywhere on the surface of the earth, for any person connected to internet. Some applications of design, implementation, generation and dissemination of maps on the web are recognized as “Webmapping” application, geographic web services or more generally on demand-map making tools. All these web applications aims the satisfaction of user needs by providing personalized maps in a fast response time with a good quality. However, the complexity and diversity of aspects taking into account have lead researchers to focus on one aspect at the expense of others. Consequently, few works have addressed all these aspects simultaneously. The authors propose in this paper, a Webmapping approach organized into two main tasks: (1) query analysis driven by domain ontology in analyzing a query launched by a user on a web browser and (2) map generation process. The first step allows extracting and formalizing user needs through two map determinants factors: the Level of Detail (LoD) and Point of View (PoV) and the second, exploit an hybrid approach “Multi Representation and Generalization” in storing and generating geographical data with integrating Multi-Agent technology in all steps of processing. To evaluate the effectiveness of our proposal, a first tool prototype implementing our approach is so developed using a geographic vector dataset provided by national cartographic agency.

La sociologie de la religion en Grèce

1975 ◽  
Vol 22 (1) ◽  
pp. 7-17
Author(s):  
Anastase Tzanimis
Keyword(s):  
Sociology Of Religion ◽  
Point Of View ◽  
Economic Life ◽  
Social Phenomenon ◽  
Research Projects ◽  
The Social ◽  
The Subject ◽  
Scientific Results ◽  
The Individual ◽  
Theological Thought

Sociology of religion has not developed in Greece as it has in the western countries. It is not easy to determine the reasons for the scarcity of studies and research projects con cerning sociology of religion. In fact, neither religion, taken as a universal social phenomenon, nor orthodox theological thought and its application to the individual and to the social, political and economic life of the Greek people have been sufficiently studied from a sociological point of view. Con temporary Greek sociologists have only touched on the subject of religion. Some effort has been made during the last decade by young Greek theologians to properly establish and develop the science of sociology of religion. This effort, however, has, so far, not brought about the anticipated scientific results. Moreover, it has failed to gain the confidence and acknow ledgement in theological and ecclesiastical circles where socio logy as a science is still generally regarded with much re servation. It should be noted that the development of sociology of religion in Greece was first prompted by various Christian — social movements for the purpose of opposing several anti- Christian ideological movements which have appeared since the beginning of our century.

The User Research in New Product Development

2008 ◽  
Vol 44-46 ◽  
pp. 619-626
Author(s):  
Zhao Hui Huang ◽  
W. Su
Keyword(s):  
Sustainable Development ◽  
New Product Development ◽  
Product Life Cycle ◽  
New Technology ◽  
New Product ◽  
Point Of View ◽  
User Needs ◽  
Innovative Product ◽  
User Research ◽  
Design Characteristics

Today, people have gradually realized that when we use new technology to create more comfortable life, it has paid a heavy environmental price. Therefore, we began to estimate our social development and design innovations with sustainable development thought. This paper seeks to find the source of the product life cycle, based on user needs as the research object, from the point of view as politics, economy, culture, lifestyle and many other aspects. Innovative product design characteristics of sustainable development are exlplored in depth, so that the products we designed, in a globalized competition environment, can live in harmony with the society and environment, meet people's needs, and at the same time, compete in the market with unique charm.

scholarly journals Pengembangan Sistem Informasi Manajemen Supplier dan Barang dengan Extreme Programming

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Astria Hijriani ◽  
Jannati Asri Safitri ◽  
Raden Irwan Adi Pribadi ◽  
Rico Andrian
Keyword(s):  
Information System ◽  
Data Collection ◽  
Extreme Programming ◽  
User Needs ◽  
Functional Requirements ◽  
Management Information ◽  
Testing Method ◽  
Fashion Products ◽  
Black Box Testing

The case study was taken from one of  trading companies in Lampung. The company sells Muslim fashion products from a large number of suppliers. Suppliers data is recorded in detail manually, as well as products recorded. Manual data collection can result in recording errors, data easily tucked, or not recorded. This research develops an information system to help the company in data collection of suppliers and products automatically based on web  using Laravel as a framework. This system is built using extreme programming methods and has features that focus on collecting suppliers, products, and product shipments. The results of system testing using the black box testing method shows that the system has fulfilled functional requirements and user needs.   Keywords— Management Information System; Product; Supplier.

scholarly journals Graiurile poloneze din Poiana Micului şi Bulai (Bucovina de Sud) – o perspectivă sociolingvistică de tip comparativ pe baza ALAB

2020 ◽  
Vol 47 (3) ◽  
pp. 55-78
Author(s):  
Florin-Teodor Olariu ◽  
Veronica Olariu
Keyword(s):  
Ethnic Minority ◽  
Ethnic Groups ◽  
Field Studies ◽  
Point Of View ◽  
Research Projects ◽  
Literary Language ◽  
Polish People ◽  
The Status

The Polish communities from Bukovina have been studied in the last period through several research projects, initiated by both Polish and Romanian researchers. One of them is the Audiovisual Linguistic Atlas of Bukovina (ALAB), which aims to realize a radiography in multimedia format of the ethnolinguistic diversity of Bukovina. Regarding the Polish ethnic minority, in 2016 two field studies have been carried out in two localities: Bulai and Poiana Micului. Following the analysis of the material thus obtained, we managed to capture some characteristics both at the linguistic and the sociolinguistic level that individualize the two communities. Thus, from a linguistic point of view, the two dialects are different both at phonetic and lexical level, the Bulai dialect being more similar to the Polish literary language. At the sociolinguistic level has been observed the presence of a strong epilinguistic component in the Polish people speech, based on the representations and the attitudes that the Polish ethnic groups have regarding the status and the vitality of their own dialects.

Considerations in Retrofitting Gas Turbine Governors

1986 ◽  
Author(s):  
William M. Paling
Keyword(s):  
Heat Transfer ◽  
Gas Turbine ◽  
Failure Mode ◽  
Point Of View ◽  
Functional Requirements ◽  
Combustion Performance ◽  
The Subject

The paper examines some aspects which should be examined in specifying and selecting replacement gas turbine governors. It explores the subject from the point of view of the engine manufacturer in his investigations and studies of the original supplied governor. It examines some aspects of the liaison required between the governor engineer, the User and the mechanical, combustion, performance and heat transfer engineers to define governor functions. Having established functional requirements it then considers aspects such as reliability, failure mode, documentation and a plan for the retrofit.

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