scholarly journals Concept MSBS GROT Rifle Upper Receiver Shield to Protect Against Foreign Objects

2021 ◽  
Vol 12 (4) ◽  
pp. 105-124
Author(s):  
Wojciech KOERSKI

This paper presents a concept for shielding the MSBS (Modular Firearms System) Grot rifle upper receiver against foreign objects. The concept guidelines involve feedback from Grot operators concerning the regular operation of the rifle plus an extensive analysis of desktop patent research into foreign debris shields (or dust shields) for protection of the upper receiver interior in firearms. The completed patent desktop research included solutions used with automatic, semi-automatic and non-automatic firearms. The research work drove the formulation of the requirements for an upper receiver dust shield for the 5.56 mm calibre MSBS Grot rifle as part of the ongoing improvement process. This paper presents three concepts of the carrier charging handle assembly dust shield (for the protection of the upper receiver against foreign objects) for the MSBS-5.56 rifle system. The concepts described vary in terms of the level of structural complexity of the dust shield, and the extent of the modifications required to the upper receiver of the rifle. With test units of the upper receiver dust shield manufactured and comparative tests completed on the three concepts, the version selected should be the one which improves the protection of the rifle internals from foreign objects found in the local environment, including sand, clay, silt, and mud, the latter being an aqueous suspension of these particles.

2021 ◽  
Vol 13 (5) ◽  
pp. 2911
Author(s):  
Jesús Manuel De Sancha-Navarro ◽  
Juan Lara-Rubio ◽  
María Dolores Oliver-Alfonso ◽  
Luis Palma-Martos

University students consume live music; however, almost 40% declare that they have never attended a flamenco show, an intangible heritage of humankind. Numerous studies have shown that cultural capital and socioeconomic profile, among other factors, are variables that influence cultural consumption, and therefore, cultural sustainability. Considering the relationship between several variables, this paper pursues a double objective. On the one hand, identifying the factors that influence attendance at flamenco shows, and on the other, proposing a predictive model that quantifies the likelihood of an individual attending a flamenco show. To this end, we analyse flamenco consumption by means of a survey conducted on 452 university students, using Multilayer Perceptrom (a non-parametric model), a methodology based on an artificial neural network. Our results confirm the importance of cultural capital, as well as personal and external factors, among other. The findings of this research work are of potential interest for management and planning of cultural events, as well as to promote cultural sustainability.


1990 ◽  
Vol 19 (1) ◽  
pp. 41-41
Author(s):  
René Lemarchand

My apologies to Mr. Chrétien and to your readers for “developing some simplistic formulas on Burundi” in my quest for “media success.” No such simplistic formulas enter his criticism of my Congressional testimony. On the one hand, I am taken to task for not conceding that my interpretation of the Hutu-Tutsi conflict as a recent phenomenon is the product of Chrétien’s “patient research work” over the last quarter of a century; on the other hand, “some very similar analysis” had appeared in my “excellent work of 1970,” which came out long before Mr. Chrétien embarked on his patient research! Try to figure that one out if you can.


2021 ◽  
pp. 348-355
Author(s):  
Abderrazak Mazouak ◽  
Malika Tridane ◽  
Said Belaaouad

Digital technologies have come to shake up the traditional paradigm of learning, and to change the existing relationship of "know-teaching" to put in place a key concept of the time is "to accompany through digital tools Our intervention is part of a technical-pedagogical approach and will focus on an action research work in which we will try:First, to present on line an accessible digital device that facilitates and organizes project planning and provides means to govern and control the quality of administrative acts.Next, We will show the first results of the experimentation of this tool in our context of research represented by 355 directors of the secondary schools of the provincial delegation of Taza. Morocco, pointing out all the constraints and limitations that hampered its implementation.Finally, we confirm that the use of this device by our sampling has caused a triple effect on their pedagogical practices: the professionalization of strategic planning on the one hand, and the governance of resources and the rationalization of pedagogical decisions on the other hand and immediate evaluation and regulation in the third phase.


Author(s):  
Elena Nachinova ◽  
Alla Vasilevskaya

The article addresses the problem of the negative impact of the irregular use of electronic information carriers on primary school pupils’ psychophysical development. Foreign researches and WHO data on the allowed time of use of information devices for children and teenagers, their impact on heath, speech and motor development of the younger generation are presented. The concept “information device” is defined, the main contradictions of the active use of information devices by children are described which are resulted, on the one hand, from the impossibility of education and socialisation of the younger generation apart from electronic information devices, and, on the other hand, due to their negative impact on children’s health and psychophysical development. The choice of the age group for the study is substantiated – the primary school age, at which psychophysical and psychosocial changes take place, significant for the entire subsequent period of a child’s schooling. It is emphasised that at this age period children’s computer dependence has not yet formed, even a positive effect of the use of a computer on the mental development of a primary school pupil is noted. At the same time, the use of information devices in the education and leisure of primary school pupils requires a proper organisation of their educational work, balance of various activities, formation of pupils’ conscious behaviour, which will contribute both to the education of the child and his / her proper psychophysical development. The content of the experimental research work, which was carried out at the elementary grades of schools in Odessa region involving second-third-grade pupils and their parents, is described. The results of the surveys represented by pupils and their parents, pedagogical observations, assessment of pupils’ performance, the characteristics of their speech and motor development have shown an increase in the time allotted to children to work with information devices and the negative impact of their irregular use on the psychophysical development of primary school children.


1995 ◽  
Vol 1 (2) ◽  
pp. 421-429
Author(s):  
Đurđica Zoričić ◽  
Lorena Mošnja

Nowadays it is beyond all doubt that the health care activity in its entire volume, on the one hand, represent parts of the global economic system, developing in a considerable mutual dependence. In the paper, within the scope of the development of tourism, one of its narrower segments is perceived: the health care of the tourist population. The research work has been done in Istria, one of the most outstanding tourist destinations, where scientists and experts have been working intensively on the tourism development forecast up to 2010. In addition to healthy food, clean sea and environment, a tourist has to have certainty that in case of illness he/she will get a service corresponding to the world standards. The concourse of tourism and health care gives answers to the question what should be done to achieve a harmony in the development of both activities, and in this way the general progress of the Croatian State. For the requirements of this paper adaptation possibilities of the health system to the new situation have been researched on the basis of perception of the institutional condition of the health care activity, staff and material supply and equipment for the work in new conditions. In the first part the population health condition is researched on the basis of relevant indicators such as morbidity and mortality of the inhabitants, movement of the number of born and deceased, volume and structure of sick leaves and the like. In the second part an analysis is made and the health care development degree stated for Istria as the tourist resource. On the basis of the entire research work it could be concluded that the health care of Istria has at its disposal staff potential and capital objects that enable a fast adaptation in harmony with the development of tourism.


2014 ◽  
pp. 1363-1384
Author(s):  
Mohammad Zarour ◽  
Alain Abran ◽  
Jean-Marc Desharnais

Software organizations have been struggling for decades to improve the quality of their products by improving their software development processes. Designing an improvement program for a software development process is a demanding and complex task. This task consists of two main processes: the assessment process and the improvement process. A successful improvement process requires first a successful assessment; failing to assess the organization’s software development process could create unsatisfactory results. Although very small enterprises (VSEs) have several interesting characteristics such as flexibility and ease of communications, initiating an assessment and improvement process based on well-known Software Process Improvement (SPI) models such as Capability Maturity Model Integration (CMMI) and ISO 15504 is more challenging in such VSEs. Accordingly, researchers and practitioners have designed a few assessment methods to meet the needs of VSEs organizations to initiate an SPI process. This chapter discusses the assessment and improvement process in VSEs; we first examine VSEs characteristics and problems. Next, we discuss the different assessment methods and standards designed to fit the needs of such organizations and how to compare them. Finally, we present future research work perceived in this context.


Author(s):  
Muthu Ramachandran ◽  
Zaigham Mahmood

Internet security is paramount in today’s networked systems, especially when they provide wireless application access and enable personal and confidential data to be transmitted across the networks. Numerous tools and technologies are available to ensure system security, however, external threats to computer systems and applications are also becoming more and more sophisticated. This chapter presents a framework that consists of two components: (1) an assessment model to look at the existing security infrastructure of an organisation to determine its security maturity level; and (2) a process improvement maturity model to suggest an improvement mechanism for the organisation to progress from one maturity level to the next higher level. The intention is to provide a framework to improve the organisation’s Internet and network security so that it becomes more efficient and effective than before. The improvement process model is a 5-stage framework, which has the potential to be established as a standard maturity model for assessing and improving security levels in a manner similar to other software process improvement framework such as CMMI. Preliminary results, based on looking at the existing security measures of one particular organisation, reveal that there is indeed a need for an appropriate model such as the one being proposed in this chapter.


Author(s):  
Mirna Muñoz

Software has become the core of organizations in different domains because the capacity of their products, systems, and services have an increasing dependence on software. This fact highlights the research challenges to be covered by computer science, especially in the software engineering (SE) area. On the one way, SE is in charge of covering all the aspects related to the software development process from the early stages of software development until its maintenance and therefore is closely related to the software quality. On the other hand, SE is in charge of providing engineers able to provide technological-base solutions to solve industrial problems. This chapter provides a research work path focused on helping software development organizations to change to a continuous software improvement culture impacting both their software development process highlighting the human factor training needs. Results show that the implementation of best practices could be easily implemented if adequate support is provided.


Algorithms ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 266 ◽  
Author(s):  
Elias Dritsas ◽  
Andreas Kanavos ◽  
Maria Trigka ◽  
Spyros Sioutas ◽  
Athanasios Tsakalidis

The need to store massive volumes of spatio-temporal data has become a difficult task as GPS capabilities and wireless communication technologies have become prevalent to modern mobile devices. As a result, massive trajectory data are produced, incurring expensive costs for storage, transmission, as well as query processing. A number of algorithms for compressing trajectory data have been proposed in order to overcome these difficulties. These algorithms try to reduce the size of trajectory data, while preserving the quality of the information. In the context of this research work, we focus on both the privacy preservation and storage problem of spatio-temporal databases. To alleviate this issue, we propose an efficient framework for trajectories representation, entitled DUST (DUal-based Spatio-temporal Trajectory), by which a raw trajectory is split into a number of linear sub-trajectories which are subjected to dual transformation that formulates the representatives of each linear component of initial trajectory; thus, the compressed trajectory achieves compression ratio equal to M : 1 . To our knowledge, we are the first to study and address k-NN queries on nonlinear moving object trajectories that are represented in dual dimensional space. Additionally, the proposed approach is expected to reinforce the privacy protection of such data. Specifically, even in case that an intruder has access to the dual points of trajectory data and try to reproduce the native points that fit a specific component of the initial trajectory, the identity of the mobile object will remain secure with high probability. In this way, the privacy of the k-anonymity method is reinforced. Through experiments on real spatial datasets, we evaluate the robustness of the new approach and compare it with the one studied in our previous work.


1998 ◽  
Vol 4 (S2) ◽  
pp. 672-673
Author(s):  
Y. Huang ◽  
B.H. Moeckly ◽  
K.L. Merkle

In recent years, many efforts have been made to fabricate high-Tc superconductor/normal-metal/ superconductor (SNS) Josephson junctions, but no breakthrough has been made. The major difficulties are the poor reproducibility of the junction parameters due to the structural complexity and defects in the barrier layer. Some junctions, such as the one with Co-doped YBCO barrier, have relatively small spreads in properties. However, the value of their normal state resistance Rn is low, which limits their use for many applications. One approach to solve this “low-Rn” problem is to use materials of high resistivity for the barrier layer. PBCO is an insulator near the metal-insulator transition. Doping with Co drives it further into the insulating regime. The lattice constants of PBCO are close to that of YBCO, even closer when doped with Co. Therefore, Co-PBCO may form a high-resistivity barrier which matches with YBCO very well and hence is a potential candidate barrier material.


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