scholarly journals AAGC-Autonomous Armed Guard Companion

2018 ◽  
Vol 7 (3.6) ◽  
pp. 298
Author(s):  
D Deepak ◽  
A Dinesh Kumar ◽  
M Gokulakrishna
Keyword(s):  
Autonomous System ◽  
Eddy Currents ◽  
Metal Detector ◽  
Concealed Weapons ◽  
Microwave Sensor ◽  
Current Scenario ◽  
Human World ◽  
Metal Detectors ◽  
Security Checks ◽  
Very High

Technology has revolutionized human world over the past centuries. The world has started to move towards the autonomous world. However, in terms of security and safety of humans from antisocial threat person, technology has not achieved its peak in providing autonomous system. Places such as airport, railways stations, and malls are well secured either by metal detectors or by manual scrutiny. Moreover, the current scenario demands a very high security in common places such as hospital, schools, and community halls where manual security checks might not be possible. In this work an autonomous system is developed to detect and track concealed weapons with potential to stop the threat person before causing any harm or danger. The system achieves its task by carrying out three main functions in a sequential order. A microwave sensor and metal detector together detects the concealed weapon by means of the Doppler shift in the radiation and eddy currents induced in the metal respectively. Secondly, the output voltage from the microwave senor is processed by a microcontroller. Lastly, a DC motor attached with a laser pointer, receives input from microcontroller such that rotates in a direction pointing the concealed weapon.  

scholarly journals Development of the model of input control of timber for the enhancement of operational performance of sawn stream

2019 ◽  
Vol 298 ◽  
pp. 00066
Author(s):  
I.V. Eliseev ◽  
B.M. Shifrin ◽  
V.A. Sokolova
Keyword(s):  
Control System ◽  
Technological Process ◽  
Control Object ◽  
Technological Scheme ◽  
Operational Performance ◽  
Metal Detector ◽  
Feed Line ◽  
Input Control ◽  
Metal Detectors

In this article, a task of enhancement of the operational performance of modern sawing equipment, is set and solved. One of the necessary element thereof is to install scanners of presence of metal inclusions (metal detectors) on the feed line of bolt timber. In this article the control object under observation is the small sawing line based on two round-sawing machines KARA MASTER. It is proposed for the line that a classic technological scheme should be modified in a way the bolt timber, moving through a conveyor, to be passing an aperture of metal detector. In this article, the approach for algorithmization and programming of the control system is proposed to be SWITCH-technology and the corresponding area of programming, an automata-based programming. This technology, made a perfect showing for controlling of various objects, is proposed to be introduced for developing of models of typified technological process of small timber sawing. The first section in your paper.

Sleeping with the “Enemy”

2015 ◽  
Vol 3 (3) ◽  
pp. 263-274 ◽  
Author(s):  
Matthew Reeves
Keyword(s):  
Experimental Program ◽  
Archaeological Sites ◽  
Archaeological Research ◽  
Metal Detector ◽  
Survey Techniques ◽  
Hands On ◽  
History Of ◽  
Metallic Artifact ◽  
Metal Detectors ◽  
Proper Context

AbstractIn 2012, the Archaeology Department at James Madison’s Montpelier began an experimental program with Minelab Americas to encourage metal detectorists to become more involved in the scientific process of archaeological research. Specifically, the program is designed to be a week-long experience in which archaeologists and metal detectorists work together to identify and preserve archaeological sites at the 2,700-acre Montpelier property. In the process, the metal detector participants are taught the importance of site preservation through background lectures and hands-on field training in which they use their metal detectors as a remote sensing device. Participants learn how gridded metal detector surveys are conducted and the importance of proper context and curation of recovered objects. The team-based approach of our program has resulted in a co-creation process whereby metal detectorists bring to the table their skills in using their machines to identify subtle metallic artifact signals and archaeologists bring the skill of systematic survey techniques to map and record archaeological sites. In the end, teamwork encourages open and frank discussions regarding the interface between metal detecting and the archaeological communities and has gone a long way toward reconciling differences between these two groups who have a long history of strained relations.

Between Rescue and Research: An Evaluation after 30 Years of Liberal Metal Detecting in Archaeological Research and Heritage Practice in Denmark

2013 ◽  
Vol 16 (4) ◽  
pp. 704-725 ◽  
Author(s):  
Andres S. Dobat
Keyword(s):  
Social Factors ◽  
Current Status ◽  
Archaeological Research ◽  
Complex Interplay ◽  
Metal Detector ◽  
The Past ◽  
The World ◽  
Danish Experience ◽  
Metal Detectors

Since the early 1980s, metal detector surveying conducted by amateur archaeologists has contributed significantly to archaeological research and heritage practice in Denmark. Here, metal detecting has always been legal, and official stakeholders pursue a liberal model, focusing on cooperation and inclusion rather than confrontation and criminalization. Like no other surveying method since the invention of the shovel, the metal detector has contributed to increasing enormously the amount of data and sites from metal-rich periods. Virtually all of the spectacular and ground-breaking discoveries of the past decades are owed to metal detectors in the hands of amateur archaeologists. And it is these finds and sites that today constitute one of the very foci of archaeological research. This article provides an overview of the current status of liberal metal detector archaeology in Denmark 30 years after its inception, and attempts to identify the reasons why this popular hobby never developed into the problem it has become in other parts of the world. It concludes that the success of the liberal model in Denmark is the result of a very complex interplay of legislative, historical, cultural, and social factors. On this basis, it is discussed whether the Danish experience can be used as a source of inspiration in the necessary progression towards a new legal agenda for responsible metal detector archaeology.

scholarly journals Modified office practice in COVID-19 pandemic - an otorhinolaryngologist perspective

2020 ◽  
Vol 7 (11) ◽  
pp. 4659
Author(s):  
Juhi Tripathi ◽  
Shweta Kumari ◽  
Shalabh Rastogi
Keyword(s):  
Infection Prevention ◽  
Surgical Intervention ◽  
Family Welfare ◽  
Protective Equipment ◽  
Prevention Measures ◽  
Current Scenario ◽  
Safety Guidelines ◽  
Very High ◽  
Nose And Throat ◽  
Made In

COVID-19 spreads through contact, minute droplets and aerosol from infected person which may be symptomatic or asymptomatic. Nose and throat had very high load of severe acute respiratory syndrome (SARS-CoV-2) virus. Otorhinolaryngologists by virtue of their work which requires close examination of these part are at very high risk of infection. Many studies are available for precautions to be taken in patient management related to COVID-19 in wards and surgical intervention in operation theaters but very little information is available regarding precautions in working in outpatient clinic setting. Our article highlights some changes we made in ear, nose and throat (ENT) outpatient clinics after going through various guidelines to make it safe in current scenario. These changes may inspire others to move toward safer work practices in their outpatient area to provide ENT consultations. The main changes were categorized into infrastructural changes, identification of frugal but effective personal protective equipment (PPE) for ENT, training for use of different level of PPE as per risk, new modus operandi, and new infection prevention measures. These changes had taken into account safety guidelines by Ministry of health and family welfare (MOHFW) government of India and various international associations specific to specialty. The modification and its advantages were presented.

scholarly journals A Review of Studies on Climate Change in Nepal

2019 ◽  
Vol 6 ◽  
pp. 11-20
Author(s):  
Payaswini Ghimire
Keyword(s):  
Climate Change ◽  
Greenhouse Gases ◽  
Anthropogenic Activities ◽  
Developed Countries ◽  
Maximum Temperature ◽  
Time Period ◽  
Global Issue ◽  
Current Scenario ◽  
Very High ◽  
Emission Of Greenhouse Gases

Climate change is now a global issue and its impact on different sectors like water sources, biodiversity, health, livestock, and livelihood are already seen. Climate change is accelerating due to the emission of greenhouse gases produced by anthropogenic activities. Though Nepal’s contribution to greenhouse gases is negligible compared to developed countries, its risk to climate change is very high. Thus, it extremely important to understand the current scenario of climate change of Nepal. Hence, this article reviews and compares the published articles which studies the pattern and trend of climate change of the time period of at least 30 years. Most of the article shows increasing trend of temperature. According to the recent study, maximum temperature was found to be increasing by 0.05°C/year and minimum temperature was found to increase by 0.03°C/year. Though, the trend of precipitation in Nepal is not clear like temperature most of the studies have concluded increasing in monsoon precipitation in coming years.

Intelligent Metal Detector

2013 ◽  
Vol 543 ◽  
pp. 133-136
Author(s):  
Petr Nováček ◽  
Jakub Svatoš
Keyword(s):  
Continuous Wave ◽  
Wave Mode ◽  
Position Estimation ◽  
Modular Structure ◽  
False Alarms ◽  
Unexploded Ordnance ◽  
Metal Detector ◽  
Continuous Wave Mode ◽  
Metal Detectors ◽  
Master Module

Humanitarian demining is a matter of high interest, but metal contamination and magnetic soils reduce the sensitivity of metal detectors. The soil contamination also increases the numbers of false alarms which, in some areas, account for as much as 99.9 % of all alarms. The decrease of false alarms is therefore attractive. Our solution is capable to be adapted and utilized with current professional metal detectors. Essentially it consists of several modules with modular structure, where the master module is always necessary in all applications and the navigation module has to be connected in cases where position estimation is required. Searching part of the detector is able to work in continuous wave mode with variable excitation signal and the possibility to utilize more carrier frequencies. Furthermore, the modular structure can use different search heads available on the market as well as heads developed for special purposes. The modular metal and mine detector described is capable to detect not only unexploded ordnance and explosive remnants of wars, but also pipes and wires in walls and floors indoor which is useful property during not only buildings reconstructions.

Wedgie Gold: Using metal detectors to recover PIT tags under areas used by wedge-tailed eagles and barn owls

2018 ◽  
Vol 40 (2) ◽  
pp. 304
Author(s):  
M. Blythman ◽  
C. Sims ◽  
G. Eliot
Keyword(s):  
Threatened Species ◽  
Barn Owl ◽  
Pit Tag ◽  
Metal Detector ◽  
Passive Integrated Transponder ◽  
Pit Tags ◽  
Barn Owls ◽  
Metal Detectors ◽  
Roost Trees

A metal detector was used to recover passive integrated transponder (PIT) tags from below wedge-tailed eagle and barn owl nests and roost trees. The effectiveness of four different metal detectors to locate PIT tags and Australian Bird and Bat Banding Scheme (ABBBS) bands were compared. Twenty PIT tags from 14 golden bandicoots, five burrowing bettongs and one rufous hare-wallaby were recovered from wedge-tailed eagle sites. One unreadable PIT tag was recovered from a barn owl site. This technique has potential for use in determining the survivorship of translocated threatened species.

A Mobile Robot Obstacle Avoidance Using Fuzzy Logic and Model Predictive Control

2014 ◽  
Vol 548-549 ◽  
pp. 922-927
Author(s):  
Bayanjargal Baasandorj ◽  
Aamir Reyaz ◽  
Park Joung Ho ◽  
Cha Wang Cheol ◽  
Deok Jin Lee ◽  
...  
Keyword(s):  
Fuzzy Logic ◽  
Model Predictive Control ◽  
Mobile Robot ◽  
Obstacle Avoidance ◽  
Predictive Control ◽  
Real Life ◽  
Dynamic Environment ◽  
Logic Control ◽  
Microwave Sensor ◽  
Very High

This paper presents a method of solving the problem of mobile robot Obstacle avoidance and path planning in an unknown dynamic environment. A linear model of the two-wheeled nonholonomic robot controlled using Model predictive control controller. For obstacle avoidance Fuzzy logic control is used. The ultrasonic sensors are used for positioning and identifying an obstacle. The proposed method is successfully tested in simulations. Obstacle avoiding technique is very useful in real life, this technique can also use as a vision belt of blind people by changing the IR sensor by a kinetic sensor ,which is on type of microwave sensor whose sensing range is very high and the output of this sensor vary in according to the object position changes.

scholarly journals Altering Perceptions, Visualizing Sub-ground Metal Objects

2020 ◽  
Vol 4 (3) ◽  
pp. 205-213
Author(s):  
Aleksander Pedersen
Keyword(s):  
User Interface ◽  
Partial Information ◽  
Safety Training ◽  
Sensor Technology ◽  
Metal Detector ◽  
Performance Reviews ◽  
Smartphone Sensors ◽  
Metal Detectors ◽  
And Performance ◽  
Visualization Techniques

Smart phones and sensor technology represent a key part of everyday life and are being used in areas such as safety, training, healthcare and others. Utilizing an array of internal sensors and a metal detector requires an evaluation of the precision of the measurements and performance reviews. Metal detectors are versatile, with uses in healthcare as well as recreational, but a common issue often seen in the proprietary equipment is bad presentation of data. Usually the user interface is just numbers on a display, simplified graphs or sounds. By combining smartphone sensors with a metal detector and a custom mount we model a mapping between the virtual and physical model, a digital twin. In this paper we are utilizing the computing capabilities of a smartphone and employing visualization techniques not possible by partial information. In addition, we present an improved graphical user interface without any proprietary accessories. For this purpose, preliminary case studies are included as a part of a prototype in development.

scholarly journals L'étude des données "grises" issues de la détection illégale de métaux : sauvegarde du patrimoine ou cercle vicieux du pillage?

2019 ◽  
Vol 2 (3) ◽  
pp. 149-157
Author(s):  
Thomas Lecroere
Keyword(s):  
Metal Detector ◽  
Public Authorities ◽  
Archaeological Heritage ◽  
Heritage Sites ◽  
Real Risk ◽  
Current Events ◽  
The Media ◽  
Metal Detectors ◽  
Research Assistants ◽  
Scientific Validation

The practice of metal detection has developed considerably over the past forty years. Taking into account the risk that it posed to the archaeological heritage, public authorities, following international recommendations, have put implemented legislation to try to reduce its impact. Some nations such as England and Wales, and recently Belgium, nevertheless consider users of metal detectors more as research assistants than as a real risk to the archaeological heritage and encourage them to report their findings to the competent authorities. In addition, discoverers of exceptional objects can be rewarded financially. In France, where legislation requires administrative authorization to use a metal detector, declaratory systems are models for the detector user community who have dreamed of “active collaboration” between themselves and archaeologists. Some scientists, arguing that illegal detection is a reality that cannot be combated, nevertheless choose to record and study the discoveries of clandestine users of metal detectors, seeing in this the possibility of “saving what can be saved”. However, various examples from current events and the media show that, far from its original purpose, this practice provides a scientific validation for the detection of metals and a market value for the objects discovered, thus creating a demand for the looting of heritage sites.

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