The role of resource efficiency in engineering education

Part of: Seliger, Günther (Ed.): Innovative solutions : proceedings / 11th Global Conference on Sustainable Manufacturing, Berlin, Germany, 23rd - 25th September, 2013. - Berlin: Universitätsverlag der TU Berlin, 2013. - ISBN 978-3-7983-2609-5 (online). - http://nbn-resolving.de/urn:nbn:de:kobv:83-opus4-40276. - pp. 90–95.The purpose of this paper is to address various issues of resource efficiency in the perspective of engineering education in the Middle East and North Africa (MENA) region, with particular focus on Occupied Palestinian Territory (Palestine). First, the paper reviews the concept of resource efficiency from several perspectives including energy, electricity and water related challenges, material management and solid waste management. Then the current state of the education and training is discussed along with some details regarding the developed resource accounting perspective for engineering education. Open knowledge platform is foreseen to aid the transition from problem to solution, bringing engineering education up front to tackle the resource efficiency challenges in the MENA region. Finally, capacity building through university graduates is considered as an important mechanism for raising awareness in resource efficiency

Atherosclerosis of cavernosal arteries as a cause of erectile dysfunction in an adult: our findings on triplex doppler sonography

A sixty year old man presented to our health facility with a year history of severe erectile dysfunction (International Index of Erectile Function Score of 5 (IIEF-5)). He was also a known hypertensive and currently being managed for hypertensive heart disease by the Cardiologist. Colour Doppler interrogation of the Cavernosal Arteries showed multiple areas of narrowing in both arteries, giving beaded appearance. The peak systolic velocities of the arteries were less than 25cm/s, and there was persistent diastolic flow in the entire spectral recordings, prompting the diagnosis of arteriogenic erectile dysfunction (ED) secondary to atherosclerosis of the cavernosal arteries. He had medical treatment with PGE5-I, and intracavernosal injection of prostaglandin E1 (Caverjet), but all to no avail. He was counselled for penile implant and he is favourably disposed to that but largely being limited by funds

An Examination of the Qatari Licensure System: Giving Voice to Educators at Government-Funded Schools

The issue of developing a comprehensive licensure system aligned with professional standards for teachers and school leaders has received considerable attention in recent years. As part of the Qatari educational reform in recent years, teachers and school leaders are held accountable to offer quality education for all students. The current study thus examined the experiences of educators in Qatar with the licensure process currently implemented at government-funded school. Using a survey study design, a total of 1,669 participants expressed their perceptions on the strengths and weaknesses of the licensure system, the professional standards, and the professional portfolio. Findings included participants’ beliefs on the importance of the licensure system in improving their performance, the necessity of using the professional standards as tools for professional growth and development, and the importance of refining the professional portfolio for authenticity and reliability. Documenting teachers’ and school leaders’ voices was fundamental in finding ways to successfully drive future developments of the licensure system. The findings may also provide implications for other countries interested in developing or refining their own appraisal systems

Transient pressure analysis of geothermal wells fractured during well testing

Fracturing during injectivity testing can take place in geothermal wells when the reservoir has low permeability or when the well has significant skin damage. The transient behavior (pressure falloff) of these wells cannot be matched using existing well test analysis methods. At the same time, modelling fracturing in geothermal re-servoirs using rock mechanics and commercial finite element software is complicated due to several field un-certainties (e.g. formation height, reservoir permeability and porosity). In addition, rock mechanics data (rock stress, strain and Young’s modulus) are normally unknown in geothermal fields. This makes it difficult to develop an appropriate fracture model that matches the field test data. This study attempts to develop a fracture model without integrating rock mechanics. The model is setup with a simple grid using the TOUGH2 geothermal reservoir simulator and validated using the advanced pressure derivative transient analysis. Multiple subsets of fracture geometries were developed to represent the different stages of fracture closure during pressure falloff. The PyTOUGH code was used to simplify the running of the different fracture stages. The results are very promising and provide a clear justification and explanation for the commonly en-countered fractured well behavior. This model should be of use in matching data from geothermal wells with similar pressure response

An Intelligent Vertical Handover Scheme for Audio and Video Streaming in Heterogeneous Vehicular Networks

In heterogeneous vehicular networks, the most challenging issue is obtaining an efficient vertical handover during the vehicle roaming process. Efficient network selection process can achieve satisfactory Quality of Service for ongoing applications. In this paper, we propose an Intelligent Network Selection (INS) scheme based on maximization scoring function to efficiently rank available wireless network candidates. Three input parameters were utilized to develop a maximization scoring function that collected data from each network candidate during the selection process. These parameters are: Faded Signal-to-Noise Ratio, Residual Channel Capacity, and Connection Life Time. The results show that the proposed INS scheme is more efficient at decreasing handover delays, End-to-End delays for VoIP and Video applications, packet loss ratios as well as increasing the efficiency of network selection processes in comparison with the state of the arts.Sadiq, AS.; Abu Bakar, K.; Ghafoor, KZ.; Lloret, J.; Khokhar, R. (2013). An Intelligent Vertical Handover Scheme for Audio and Video Streaming in Heterogeneous Vehicular Networks. Mobile Networks and Applications. 18(6):879-895. doi:10.1007/s11036-013-0465-8S879895186Chen YS, Cheng CH, Hsu CS, Chiu GM (2009) Network mobility protocol for vehicular ad hoc networks. In: Wireless communications and networking conference, IEEE, pp 1–6Ghafoor KZ, Abu Bakar K, Lee K, AL-Hashimi H (2010) A novel delay-and reliability-aware inter-vehicle routing protocol. Netw Protoc Algorithm 2(2):66–88Ghafoor KZ, Abu Bakar K, Lloret J, Khokhar RH, Lee KC (2013) Intelligent beaconless geographical forwarding for urban vehicular environments. Wirel netw 19(3):345–362Prakash A, Tripathi S, Verma R, Tyagi N, Tripathi R, Naik K (2011) Vehicle assisted cross-layer handover scheme in nemo-based vanets (vanemo). Int J Internet Protoc Technol 6(1):83–95Lee C-W, Chen MC, Sun YS (2013) Protocol and architecture supports for network mobility with qos-handover for high-velocity vehicles. Wirel Netw 19(5):811–830Pereira P, Casaca A, Rodrigues JJPC, Soares VNGJ, Triay Joan, Cervelló-Pastor C (2011) From delay-tolerant networks to vehicular delay-tolerant networks. IEEE Commun Surv Tutor 1(4):1166–1182Lloret J, Canovas A, Catalá A, Garcia M (2013) Group-based protocol and mobility model for vanets to offer internet access. J Netw Comput Appl 36(3):10271038Ghafoor KZ, Lloret J, Abu Bakar K, Sadiq AS, Mussa SAB (2013) Beaconing approaches in vehicular ad hoc networks: A survey. Wirel Pers Commun 1–28. doi: 10.1007/s11277-013-1222-9Wang L, Kuo G (2011) Mathematical modeling for network selection in heterogeneous wireless networks?a tutorial. IEEE Commun Surv Tutor 15(1):271–292Nguyen-Vuong QT, Ghamri-Doudane Y, Agoulmine N (2008) On utility models for access network selection in wireless heterogeneous networks. In: Network operations and management symposium. Salvador, Bahia, pp 144–151Canovas A, Bri D, Sendra S, Lloret J (2012) Vertical WLAN handover algorithm and protocol to improve the IPTV QoS of the end user. ON, Ottawa, pp 1901–1905Varma VK, Ramesh S, Wong KD, Barton M, Hayward G, Friedhoffer JA (2003) Mobility management in integrated UMTS/WLAN networks. In: International conference on communications. IEEE, USA, pp 1048–1053Mohanty S (2006) A new architecture for 3G and WLAN integration and inter-system handover management. Wirel Netw 12(6):733–745Rivera-Lara EJ, Herrerías-Hernández R, Pérez-Díaz JA, García-Hernández CF (2008) Analysis of the relationship between QoS and snr for an 802.11 g wlan. In: International conference on communication theory, reliability, and quality of service. IEEE, Bucharest, pp 103–107Rappaport TS (2002) Wireless communications principles and practice, 2nd edn. Prentice Hall PTR, Upper Saddle RiverCarpenter T (2007) CWNA certified wireless network administrator official study guide (Exam PW0-100). McGraw-Hill Osborne Media, New YorkEberspacher J, Eberspächer J, Bettstetter C, Vögel HJ, Hartmann C, Vgel HJ, et al (2009) GSM-architecture, protocols and services. Wiley, New YorkWLAN-MAC (2007) Wireless lan medium access control (MAC) and physical layer specifications. IEEE Comput Soc, pp 1–1183. http://standards.ieee.org/getieee802/802.11.html ,Kappler C (2009) UMTS networks and beyond. Wiley, New YorkEgoh K, De S (2006) A multi-criteria receiver-side relay election approach in wireless ad hoc networks. In: Military communications conference. IEEE, Washington, DC, pp 1–7Bucciol P, Ridolfo F, De Martin JC (2008) Multicast voice transmission over vehicular ad hoc networks: issues and challenges. In: Seventh international conference on networking. IEEE, Cancun, pp 746–751Thonet G, Allard-Jacquin P, Colle P (2008) Zigbee–wifi coexistence, Schneider electric white paperRibadeneira AF (2007) An analysis of the mos under conditions of delay, jitter and packet loss and an analysis of the impact of introducing piggybacking and Reed Solomon fec for VoIP. Computer science theses, pp 44Karapantazis S, Pavlidou FN (2009) Voip: A comprehensive survey on a promising technology. Comput Netw 53(12):2050–2090Ortiz C, Frigon JF, Sanso B, Girard A (2008) Effective bandwidth evaluation for voip applications in ieee 802.11 networks. In: Wireless communications and mobile computing conference. IEEE, Crete Island, pp 926–931International Telecommunication Union (1996) Telecommunication Standardization Sector. Methods for subjective determination of transmission quality, international telecommunication unionLi D, Pan J (2008) Evaluating MPEG-4/AVC video streaming over ieee 802.11 wireless distribution system. In: Wireless communications and networking conference. WCNC 2008 IEEE, IEEE, pp 2147–2152Yan X, Mani N, Cekercioglu YA (2008) A traveling distance prediction based method to minimize unnecessary handovers from cellular networks to WLANS. Commun Lett IEEE 12(1):14–16Lo SC, Lee G, Chen WT, Liu JC (2004) Architecture for mobility and QoS support in all-ip wireless networks. 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Minimum energy transmission forest-based Geocast in software-defined wireless sensor networks

© 2021 The Authors. Published by Wiley. This is an open access article available under a Creative Commons licence. The published version can be accessed at the following link on the publisher’s website: https://doi.org/10.1002/ett.4253Wireless Sensor Networks (WSNs)-based geographic addressing and routing have many potential applications. Geocast protocols should be made energy efficient to increase the lifetime of nodes and packet delivery ratio. This technique will increase the number of live nodes, reduce message costs, and enhance network throughput. All geocast protocols in the literature of WSN apply mostly restricted flooding and perimeter flooding, which is why still the redundancy they produce significantly high message transmission costs and unnecessarily eats up immense energy in nodes. Moreover, perimeter flooding cannot succeed in the presence of holes. The present article models wireless sensor networks with software-defined constructs where the network area is divided into some zones. Energy-efficient transmission tree(s) are constructed in the geocast area to organize the flow of data packets and their links. Therefore, redundancy in the transmission is eliminated while maintaining network throughput as good as regular flooding. This proposed technique significantly reduces energy cost and improves nodes' lifetime to function for higher time duration and produce a higher data packet delivery ratio. To the best of the author's knowledge, this is the first work on geocast in SD-WSNs

Site selection for nuclear power plant in Mersing Johor

Nuclear power is considered as energy source option for future power generation in the National New Energy Policy 2010. The first nuclear power plant (NPP) construction is expected to start at 2017, and officially operated in 2025. This paper aims to propose possible candidate site areas for NPP in Mersing District, Johor. The evaluation uses the Atomic Energy Licensing Board (AELB) guideline documents as main reference, supported by regulation documents from International Atomic Energy Agency (IAEA). 4 safety parameters are used in the assessment – geological characteristic, air dispersion (meteorological) analysis, population data and safety characteristics. This study ranked 4 proposed areas possible candidate site area for NPP in Mersing district

Clinical management of dietary induced urolithiasis associated with balanoposthitis in a Boer goat

A Boer-Kajang cross male goat was presented to the Veterinary Hospital, University Malaysia Kelantan with a history of dysuria, hematuria and restlessness. The goat was intensively managed (confined to the pen) and fed with only palm kernel cake for the last three months. Physical examination revealed that the goat was dull, depressed, having an inflamed penis and prepuce with blood stained urine dripping from the penis. The differential diagnoses were obstructive urolithiasis, urinary tract infection and balanoposthitis. Based on the history, clinical signs, physical examination, urinalysis, ultrasonagraphy and feed analysis, the goat was diagnosed with obstructive urolithiasis and balanoposthitis. Treatment was instituted by amputation of the urethral process and retrograde urohydropulsion to relieve the blockade. Sulfadiazine-trimethoprim (Norodine®24) 15mg/kg, I.M; flunixin meglumine 2.2mg/kg, I.M; vitamin B complex 1ml/10kg, I.M and ammonium chloride 300mg/kg orally were administered. The goat responded well to treatment and was recovering well during a follow up visit

Beaconing Approaches in Vehicular Ad Hoc Networks: A Survey

A Vehicular Ad hoc Network (VANET) is a type of wireless ad hoc network that facilitates ubiquitous connectivity between vehicles in the absence of fixed infrastructure. Beaconing approaches is an important research challenge in high mobility vehicular networks with enabling safety applications. In this article, we perform a survey and a comparative study of state-of-the-art adaptive beaconing approaches in VANET, that explores the main advantages and drawbacks behind their design. The survey part of the paper presents a review of existing adaptive beaconing approaches such as adaptive beacon transmission power, beacon rate adaptation, contention window size adjustment and Hybrid adaptation beaconing techniques. The comparative study of the paper compares the representatives of adaptive beaconing approaches in terms of their objective of study, summary of their study, the utilized simulator and the type of vehicular scenario. 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