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Notes For Contributors, Space And Defense

Space and Defense

No abstract provided.

A Chinese Perspective On China-United States Cooperation In Space, Dingli Shen

Space and Defense

This article describes the arrival of new space actors from Asia, with particular focus on China. It analyzes the lack of cooperation in civilian space programs between China and the United States (U.S.), and the possible negative consequence of this. The paper suggests that the principles of non-diversion and reciprocity in accession as the foundation for China-U.S. collaboration in the civilian sector of space collaboration. This paper addresses the ongoing defense program with space application by the two countries, suggesting an overall program for China and the U.S. to have dialogue, as well as collaboration in space areas, promoting mutual …

Strategic Communications With China About Space, Joan Johnson-Freese

Space and Defense

In 2006, I published an article entitled “Strategic Communication with China: What Message About Space?”1 The article pointed out that difficulties encountered in trying to convey its message regarding the Global War on Terror to a global audience had convinced the United States, or at least the Defense Science Board, that it needed to use strategic communications more effectively. From there I extrapolated, “If one believes that big problems are best tackled in small bites, ‘space’ perhaps offers an area where the United States can begin to understand and tackle some of the strategic communication issues it faces.”2 Communication mishaps …

United States - China Engagement On Space: A Role For Canada, Wade Huntley

Space and Defense

As advancing technologies expand the scope of human activities in space, the international security implications of these activities have become increasingly contested. For the United Sates, military space capabilities now serve integral roles in a spectrum of terrestrial needs, and sustaining U.S. Security interests in space has become a key concern for many military planners. Meanwhile, the space technologies of many other countries are developing rapidly. Although an outright challenge of the U.S. position is not yet imminent, some countries already possess asymmetric capabilities posing genuine threats to U.S. space operations.

Space And Sino-American Security Relations, Peter L. Hays

Space and Defense

China’s emphasis on space exploration and its development and use of space capabilities are prominent and tangible expressions of its emergence as a great power and make space an increasingly important dimension of Sino-American relations. In October 2003 China independently launched and recovered its first taikonaut, becoming just the third member of an elite spacefaring club with Russia and the United States. Then in January 2007 China first successfully tested a kinetic energy anti-satellite (ASAT) weapon and again joined Russia and the United States as one of only three states known to have demonstrated this capability. China’s growing power and …

Reflections On Sino-Us Space Cooperation, Dean Cheng

Space and Defense

Since 2006, the US Air Force Academy’s Eisenhower Center for Space and Defense Studies has sponsored an annual workshop examining the strategic impact and implications of China’s space program. This workshop series has blossomed into a Track-II process, with participants from the People’s Republic of China (PRC), and unofficial US government presence.

A key focus of many of the discussions during these workshops has been the prospects for Sino-US cooperation in space. This issue has gained prominence since the 2007 PRC ASAT test, and the US subsequent 2008 American destruction of a malfunctioning satellite. Sino-US space cooperation is seen as …

Table Of Contents Volume 2 No. 3, Space And Defense

Space and Defense

No abstract provided.

Front Matter Volume 2 No. 3, Space And Defense

Space and Defense

No abstract provided.

Speech For The 2008 National Space Forum, Jane Harman

Space and Defense

As many of you probably know, my Congressional district in Southern California is home to the Space and Missile Command – the arm of the Air Force tasked with developing and procuring the space assets that give America its eyes and ears in space.

Speech For The 2008 National Space Forum, Terry Everett

Space and Defense

I would like to thank the Eisenhower Center for Space and Defense Studies and the Center for Strategic and International Studies for the invitation to speak today. I would also like to thank Dr. Hamre , Ambassador Harrison, and Peter Teets for their leadership. Peter Teets is a good friend and great space leader and I am honored to be among such individuals who I hold in high regard.

Speech For The 2008 National Space Forum, Wayne Allard

Space and Defense

Good afternoon. It is a pleasure to be here with all of you today at the National Space Forum, and it is an honor to be here with so many industry experts and leaders. I thank our sponsors, the Eisenhower Center for Space and Defense Studies at the U.S. Air Force Academy and also the Center for Strategic and International Studies, for hosting this important event and for giving me an opportunity to speak to you today. In the Senate I have long supported the Center for Space and Defense Studies, and I am pleased to see the Center executing …

Introduction The Eisenhower Legacy

Space and Defense

No abstract provided.

Table Of Contents Volume 2 No. 2, Space And Defense

Space and Defense

No abstract provided.

Front Matter Volume 2 No. 2, Space And Defense

Space and Defense

No abstract provided.

Dress-Code Violation Detection In Arabic Regions Using Object Detection Machine Learning Model, Maha Sadat Aghaei

Thesis/ Dissertation Defenses

The dress code violation detection system is crucial for assessing clothing appropriateness in public areas. This study aims to improve this system using advanced computer vision and machine learning techniques to more effectively categorize people's attire in images and videos. To enhance adaptability and create a user-friendly graphical interface for system management and deployment, we have generated a unique dataset from various contexts mix of Western and Arabic clothing. This allows users to interact with graphical components, including the ability to upload images or use live video for clothing detection. Moreover, we have taken privacy concerns into account and implemented …

University Of Nebraska-Lincoln Agricultural Research Division 121st Annual Report. July 1, 2006 To June 30, 2007., Institute Of Agriculture And Natural Resources

Agricultural Research Division: News and Annual Reports

Our Mission..... 4

Foreword..... 5

Research Highlights..... 6

Faculty Awards and Recognitions....14

Graduate Student Awards and Recognitions...17

Undergraduate Honors Student Research Program...22

Variety and Germplasm Releases....23

Patents.....24

Administration.....25

Administrative Personnel....25

Organizational Chart....26

Administrative Units....27

IANR Research Facilities....28

Faculty.....29

Agricultural/Natural Resources Units....30

Education and Human Sciences Departments...39

Off-Campus Research Centers....40

Interdisciplinary Activities....41

Visiting Scientists/Research Associates....42

Research Projects.....47

Agricultural/Natural Resources Units....47

Education and Human Sciences Departments...52

Off-Campus Research Centers....52

Interdisciplinary Activities....53

Publications.....55

Agricultural/Natural Resources Units....60

Education and Human Sciences Departments...82

Off-Campus Research Centers....85

Research Expenditures....88

Regression-Based Models For Predicting Discharge Coefficient Of Triangular Side Orifice, Mohamed Elshaarawy, A. K. Hamed, Saad Hamed

Journal of Engineering Research

- This study introduced another technique to predict the discharge coefficient (Cd) of the triangular side orifice (TSO). This technique is based on the SPSS software as multiple linear regression (MLR) and multiple nonlinear regression (MNLR) models. These models were established using 570 experimental datasets, 70 and 30% for calibration and testing stages, respectively. These sets considered five non-dimensional parameters, including (orifice crest height, orifice length, orifice height, upstream flow depth, and Froude number of the main channel). Results showed that the MLR and MNLR models in the calibrating stage had higher determination coefficients and lower errors. In addition, the …

Study The Efficiency And Availability Of Glonass In Total Electron Content Mapping Over Egypt, Ahmed Wageeh, Mohamed Doma, Ahmed Sedeek, Alaa Elghazouly

Journal of Engineering Research

Global Navigation Satellite Systems (GNSS) are used for positioning and navigation, so the precision of its observations are crucial. The ionosphere has a significant impact on GNSS observations causing the biggest error. The free electrons in the ionosphere affect the navigation signals having electromagnetic properties. The ionosphere error can be eliminated by calculating Total Electron Content (TEC) using dual frequency receivers. On estimating TEC, a systematic error which is device (satellite and receiver) dependent is found called differential code bias (DCB). This article provides an overview of two GNSS systems: the Global Positioning System (GPS) and the GLObal NAvigation Satellite …

A Developed Iot Technique And P&O-Mppt To Enhance The Output Power Of Solar Cell Systems, Ahmed Ali, Raafat A. El-Kammar El-Kammar, Hesham F. A. Hamed, Adel A. Elbaset, Aya Hossam

Journal of Engineering Research

Abstract- Given the urgent need for continuous development in solar cell systems to increase their efficiency, in this study, a developed IoT technique was built to monitor the solar irradiance fluctuation around the solar cell systems, and a Perturbation and observation algorithm (P&O) was developed to increase the output power from the PV systems. In order to save energy, the IoT technique has been supported with a light-dependent resistor to operate and shut down with sunlight. The whole IoT technique was fed from the PV system to save energy and avoid a power outage. The measured solar irradiance profile was …

Hema: A Proposed Robot For Improving Healthcare Access In Underserved Communities, Ahmed Elshafey, Mohamed Hassan

Journal of Engineering Research

Abstract- Healthcare access is a major challenge in underserved communities, where people often face barriers such as distance, cost, and lack of transportation. HEMA (Horus Expert Medical Assistant Robot) is a new technology with the potential to revolutionize healthcare access in underserved communities by providing basic healthcare services on-site. HEMA is a mobile, affordable, and easy-to-use robot that can collect patient data, diagnose common diseases, and provide basic treatment.HEMA can address the challenges of healthcare access in underserved communities in a number of ways. First, HEMA can provide healthcare services to people who live in remote areas and who may …

Winds Of Power: Data Analysis For The Relationship Between Wind Speed, Gust, And Power Output, Samah A. Gamel, Yara Sultan

Journal of Engineering Research

Wind turbines are the most cost-effective and quickly evolving renewable energy technology. Benefits of this technology include no carbon emissions, resource conservation, job creation, flexible applications, modularity, fast installation, rural power grid improvement, and potential for agricultural or industrial use.

Sustainable Waste Management Through The Lens Of Artificial Intelligence: An In-Depth Review, Noha Emad El-Sayad, Shereen Zakaria

Journal of Engineering Research

One of the major issues facing the world, particularly developing countries, is waste management. “Waste” is any material that is not needed or has no intended use. Neglecting this waste endangers the safety of the public and causes harm, as it emits dangerous gases that have negative effects on human health. Egypt has made distinguished efforts to achieve the goals of Egypt Vision 2030 and the Sustainable Development Goals. These efforts, which have been implemented through massive government projects throughout the past few years and are set to be followed by more in the future, still require a lot of …

Modelling And Simulation Of Drone’S Airfoil, Asmaa Elbahloul, Abdullah Elshenawy

Journal of Engineering Research

This paper proposes a different innovative design of airfoils used in drones. A computational fluid dynamic (CFD) model is built to model and simulate velocity and pressure profiles of the airfoil. Simulation is carried out by COMSOL Multiphysics. Airfoil design no. A is simulated at different normal inflow velocity. Resulted lift and drag forces are 12.04 N and 2.27 N at a normal inflow velocity of 7 m/s. For the simulation of different airfoil design thickness, airfoil no. B achieved a total lift force of 22.83 N and a total drag force of 1.29 N.

Zero Energy Building Strategy In New Cities Using Revit Software Powered By An Ai Feature (Case Study: Coastal Villa In New Damietta), Huda M Albaz

Journal of Engineering Research

In the past ten years, the field of green architecture has been developed to create zero-energy buildings, which can produce the necessary energy for them in the year, in addition to not causing any damage to the surrounding environment . In other words, these buildings are able to achieve energy self-sufficiency, and also do not negatively affect the surrounding environment, as they have become a productive element and not only a consumer element [1]. The problem of research came in increasing the consumption of non-renewable energy in new cities, especially coastal cities in Egypt, with the increasing global climate change …

Path Planning For A 6 Dof Robotic Arm Based On Whale Optimization Algorithm And Genetic Algorithm, Mahmoud A. A. Mousa, Abdelrahman Tarek Elgohr, Hatem Khater

Journal of Engineering Research

The trajectory planning for robotic arms is a significant area of research, given its role in facilitating seamless trajectory execution and enhancing movement efficiency and accuracy. This paper focuses on the development of path planning algorithms for a robotic arm with six degrees of freedom. Specifically, three alternative approaches are explored: polynomial (cubic and quantic), Whale Optimization Algorithm (WOA), and Genetic Algorithm (GA). The comparison of outcomes between different methods revealed that polynomial methods were found to be more straightforward to implement, albeit constrained by the intricacy of the pathway. Upon examining the functioning of the WOA, it has been …

Modelling Of The Outdoor And Indoor Parameters Affecting The Thermal Performance Of A Trombe Wall With Different Spaces, Moataz M. Abdel-Aziz, Reham Al-Sayad, Basma M. Ibrahim

Journal of Engineering Research

Passive solar technologies (PSTs) can have several positive effects on the environment and future energy-efficient when incorporated into building design and urban planning. A Trombe wall (TW) is a type of passive solar heating system that is used in building design and architecture to collect and store solar heat for later use in heating a structure. Moreover, TW plays an important role in the reduction of a building's cooling load. This paper uses a CFD ANSYS model to conduct a 3D numerical analysis of a TW to investigate the outdoor and indoor parameters that affect the TW. Additionally, the ideal …

Contactless Heart Rate Detection Using Mm-Wave Radar Systems Advancements, Amr Hussein, Mustafa M. Abd Elnaby, Ahmed M. Elkhawaga, Nessim M. Mahmoud

Journal of Engineering Research

In recent years, there has been a significant surge in the development of non-contact methods for detecting heart and breathing rates. Various Millimeter-wave (MM-wave) radar systems, operating at different frequency bands like 10 GHz, 24 GHz, 77 GHz, and 122 GHz, have been effectively deployed for this purpose. This paper explores the vital application of contactless systems in the medical field, particularly during disasters and epidemics. These systems are crucial for detecting the heart and breathing rates of individuals trapped under debris, in military operations, long-term vital sign monitoring in hospitals, and aiding the elderly in public spaces. Consequently, our …

Design Of A Circular Concentric Microstrip Patch Antenna Array For Wi-Fi Band Energy Harvesting, Ahmed A. Kabeel, Amr Hussein, Ahmed E. Elmaghrabi, Rania H. Elabd

Journal of Engineering Research

Wireless networks have gone through unprecedented changes in the last decade owing to the rise in the number of users. Radio frequency (RF) energy harvesting (EH) (termed as RF-EH) can be a potential solution to exploit this traffic in communication systems, one of the key issues is designing a compact antenna array while providing reliable capturing characteristics over the operating band. In energy harvesting systems, printed slot antennas have received much attention owing to their matching characteristics. In addition, they present really appealing physical features, such as simple structure, small size, and low cost. In this paper, a small circular …

A Novel Optimized Conical Antenna Array Structure For Back Lobe Cancellation Of Uniform Concentric Circular Antenna Arrays, Alzahraa H. Nosier, Mohamed E. Nasr, Nessem M. Mahmoud, Amr Hussein

Journal of Engineering Research

In wireless communication systems, the existence of the antenna array back lobe represents a significant source of interference, which causes degradation of the signal-to-interference ratio (SIR), and power loss. In this paper, a novel optimized conical antenna array (O-CONAA) structure is proposed for back lobe cancellation of concentric circular antenna arrays (CCAA). Based on the CAA, It is considered to be made up Of several concentric circular antenna arrays (CCAA) which are placed in the X-Y plane. Firstly a non-optimized CONAA is constructed, by arranging these concentric CAAs with uniform vertical spacing along the Z-axis. Consequently, the CONAA seems to …

A Compact Low Frequency Vivaldi Antenna For Ground Penetrating Radar, Amr Hussein, Ahmed M. Elshenawy, Ahmed M. Elkhawaga

Journal of Engineering Research

One of the most important parts in ground penetrating radar (GPR) system is the antenna. To transmit the waves to deep depths, the operating frequency should be decreased as possible. A compact Vivaldi antenna is proposed with operating frequency of 0.4 GHz and dimensions of (0.26λ_o×0.21λ_o×0.002λ_o), where λ_o is the free-space wavelength at the operating frequency. To increase the gain of the Vivaldi antenna, the length of antenna should be increased. The conventional Vivaldi antenna length should be greater than λ_o. In order to improve the gain of the Vivaldi antenna while maintaining a compact size, a triple slot line …