SUST Journal Systems (Sudan Univ. of Science and Technology)
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أثر العوامل المحلية على تطوير نظم البرمجيات في القطاع العام
No full textتستعرض هذه الورقة العوامل التي تتعلق بتأثير بيئة وثقافة المجتمع السوداني على صناعة البرمجيات بالقطاع العام.
حيث تناقش الورقة آثار السلوك الإجتماعي السوداني على جودة وضبط عمليات تطوير البرمجيات. كما تشير الورقة إلي أهمية تبني
الدولة لسياسات عامة تضبط منهجيات تطوير البرمجيات بالقطاع العام مع م ا رعاة تطويع القد ا رت التنظيمية والإدارية للمؤسسات
العامة لتستوعب إمكانيات النظم الحاسوبية. تساهم الورقة بتقديم بعض الموجهات للتقليل من آثار العوامل السابقة حتى تكون نقطة
انطلاق للقائمين على أمر صناعة البرمجيات بالقطاع العام السودان
Digital Evidence and Best Evidence Rule Legal-Technological Approach headed for Digital Evidence Admissibility Review
Get PDFComputer forensic whizzes do their utmost to employ effective tools and methodologies to
extract and analyze data from storage devices used at the digital crime scene to acquire and be able to
present admissible evidence in court. This paper is an attempt and a trial to highlight the areas of
discussions and critical review of the available guidelines used to achieve successful computer crime
investigation that is compatible with best evidence rule. The enforcement of information laws is a step in
the right direction towards a knowledge-based well established cyber security, however having laws alone
isn’t enough for carrying out valid and effective confrontation against cyber criminals. Consequently this
paper studies the common factors and elements in the computer crime case with focus on best evidence
rule and suitable road map process of Digital Forensic Investigation Framework (DFIF) to maintain a
close cooperation between parties through effective use of legal concepts and technology. The paper
discusses the main challenges and basics needed to be handled, and observed closely to grasp a successful
prosecution of a cybercriminal. Basically, the paper deliberates and reviews deferent investigation
frameworks of cybercrime with emphasis on the most prominent frameworks, legal requirements,
technological, and technical practices needed over and done with studying cybercrime categories, rules of
evidence in court, employing historical critical literature review and the study of restrictions imposed over
admissibility of digital evidence
Geometrically Nonlinear analysis using Plane Stress / strain Elements based on Alternative Strain Measures
Get PDFThe description of deformation and the measure of strain are essential parts of
nonlinear continuum mechanics. In this paper, a new formulation for geometric nonlinear
plane stress/strain based on Logarithmic strains (GNLGS) is presented. This is coupled with
a formulation based on the well known Green's strains and coupled with modifying a
formulation based on geometric strains (conventional strains). A geometric nonlinear total
lagrangian formulation applied on two-dimensional elasticity using 4-node plane finite
elements is used. The formulations were implemented into the finite element program
(NUSAP), which is developed for the analysis of plane stress/strain problems subjected to
static loading. The solution of nonlinear equations was obtained by the Newton-Raphson
method. The program was applied to obtain displacements for the different strain measures.
The accuracy of the results was demonstrated by using two numerical examples and the
results are in good agreement with other available published solutions and those obtained
using commercial finite element solvers such as ANSYS. It could be concluded that the
geometrically nonlinear formulations converge to the correct solution with coarse meshes
and are computationally efficient. In addition, the resulting displacements clearly showed the
effect of the nonlinearity in the deflected shape. It is also observed that all results were
approximately identical when applying a small value of load and when a large value of a load
was applied there was a difference between the results of the three strain measures
تكاهل هخرجات نوىرج هىنتكارلى و سلىك هذراء هشاريع التشييذ فى السىداى
Get PDFنىحظ أ يشبسيع ان سًخث شًي و يؤسسبث ص بُعت انخشييذ انسىدا يَت حع مً ف بيئت إقخصبديت و سيبسيت و إجخ بًعيت يحفىفت -
ببن خًبطش انخ حؤثش عه يعذلاث ىًَهب أو حعثشهب و إ هَيبسهب. كزنك نىحظ إفخقبس يذساء يشبسيع انخشييذ إن يقذساث ح كً هُى ي إداسة يخبطش ان شًبسيع بطشيقت ي هًُجت. يهذف هزا انبحث إن قيبس أنفجىة بي يقذساث ان سًخجيبي و يسخىي ان قًذساث ان خًىقع لإداسة
يخبطش ان شًبسيع انك يًت بفبعهيت. حى حص يًى إسخبيب نج عً يعهىيبث و بيب بَث حسب يخطهببث أهذاف ان شًشوع و إسخع هًج حق يُت حقذيش
ان قُبط انثلاثت لإ شَبء جذاول صي يُت يقي يُت ن شًشوع إفخشاض .ً وجذ أ انفجىة بي يسخىي يقذساث ان سًخجيبي و يسخىي ان قًذساث
ان خًىقع نذيهى كبيشة و أ ان سًخجيبي لا يسخطيعى حخطيط و إداسة يخبطش ان شًبسيع انك يًت بفعبنيت و أ كم ان سًخجيبي يسخع هًى انخحهيم انيقي ف إداسة صي ان شًشوع و لا يسخع هًى انحهىل الاحخ بًنيت. حى ححهيم يششوع إفخشاض بىاسطت حق يُت يى خَكبسنى نخىضيح
أثش ان خًبطش انكهيت عه صي ان شًشوع و الاحفبق عه صيبدة إحخيبط صي يحذد. كزنك نىحظ حغييش خط ان سًبس انحشج نيذنم عه دي بُييكيت خط ان سًبس انحشج. أخيشاً، أوص انببحث بخذسيب ان سًخجيبي و يذساء يؤسسبحهى ف يجبل عهى إداسة يخبطش ان شًبسيع
Geoelectric investigation of groundwater potential in Khor Abu Habil drainage basin
Get PDFGeoelectric investigation for groundwater in Abu Habil water shed,
northern Kordofan and it’s environ was done using the Vertical Electrical Sounding
(VES) method. Twenty two vertical electrical soundings data were acquired within
the locations in the study area Borehole data were also acquired. Electrical
resistivity methods are frequently used as investigation tool in groundwater
exploration to obtain, details about the location, depth and apparent resistivity of
the subsurface layers. Schlumberger Vertical Electrical Sounding (V.E.S)
measurements were conducted using a portable ABEM SAS1000 instrument. The
acquired data cover a wide range of resisitvity values from 3.0 Ωm to more than
5500Ωm, which generally reflects the variation of resistivity within the sediments
and the basement complex. However, the interpretation of vertical electrical
sounding is presented in the form of geoelectrical sections. The general trend of
these geological sections is east – The depth to the basement . west and north – south
and structural contour maps are constructed on the basis of present VES
interpretation. The present work can be correlated to previous gravity research
which shows low gravity anomalies in Kordofan Province that indicate presence of
thick sediments. The aquifer mostly sandstone and, sand with gravel, which is
associated with intermediate resistivity range between (25 to 60 Ωm) and, the
average static water level of about 72 meters in the study area. The study reflects the
existence of relatively thick sediments, whereas the thickness does not exceed 25 m
in the southwest
Energy Efficient Routing Protocol for Heterogeneous Wireless Sensor Networks
Get PDFDue to the sensibility of power issue in wireless sensor networks and the limitations of power sources, preserving energy issue prepossess most recent advances researches in this field. Routing protocols have considerable space in those researches, and the hierarchal algorithms like LEACH are a common kind of important techniques used to decrease energy consumption in sensor networks. It increases the network scalability and prolonging network lifetime. Hierarchal based energy efficient routing protocols should be designed to adapt with characteristics of heterogeneous wireless sensor networks. In this paper a new LEACH based clustering scheme for heterogeneous wireless sensor networks proposed, which is called master, advance, and normal nodes LEACH (MAN-LEACH) deal with heterogeneity and attempt to remedy some original LEACH drawbacks. In MAN-LEACH, the cluster heads are selected by take in consideration the ratio between residual energy of each node in network after certain round and the average energy of the network. So the chances to become a cluster head for nodes are differ according to the residual energy they have. Also MAN-LEACH introduced multi levels of amplifying energy to transmit packets through network, the lowest level used to transmission between cluster members and cluster head, the middle to transmit between cluster heads and highest level used to transmit between cluster heads and base station. The performance of MAN-LEACH evaluated against three other protocol approaches LEACH, MOD-LEACH, DEEC, and simulation results show that MAN-LEACH gives longer lifetime, highest average residual energy rate, and highest rate in transferring packets to base statio
العهامل المؤثرة على نجاح النظم البرمجية بالقطاع العام: آراء خبراء التقنية
No full textتيجف ىحه الجراسة إلى تحجيج العػامل التي تؤثخ سمبا عمى تصػيخ وجػدة الشطع البخمجية بالقصاع العام بالدػدان حيث
تع استخلاص آراء بعس مجراء ومشتدبي إدارات التقشية بالقصاع العام وذلظ عغ شخيق جمدة لمتفاكخ والتذاور لتحجيج ىحه العػامل
ومغ ثع الإجساع عمييا. خ مرت الجراسة إلى تحجيج 12 عاملا ليع الأثخ الأكبخ والأىع عمى مذاريع الشطع البخمجية بالقصاع العام.
وقج أجسع الخبخاء عمى أن "عجم تحجيج الستصمبات بجقة" و"ضعف كفاءة السبخمجيغ" ىسا العاملان الأكثخ أىسية، ويمييسا العػامل
السختبصة بزعف تسػيل تقشية السعمػمات بالقصاع العام. وقج بيشت نتائج الجراسة أىسية تػحيج سياسات تقشية السعمػمات بالقصاع العام
وأىسية استحجاث ضػابط مخكدية لإجخاءات ومػاصفات الشطع البخمجية وكيفية تصػيخىا و إدارتيا. ولأىسية الشطع البخمجية بالقصاع العام
في بشاء دولة السعمػماتية فإن ىحه الجراسة تداىع في وضع لبشة لقاعجة معخفية حػل صشاعة البخمجيات بالقصاع العام كسا أن نتائجيا
يسكغ الإىتجاء بيا في وضع لػائح وضػابط تزسغ نجاح و استسخارية الشطع البخمجية بالقصاع العا
Virtual Failure Influence of Roseires Dam on Khartoum City Using HEC-RAS Hydraulic Simulation Modeling
Get PDFDam break is series phenomenon that can result in fatal consequences and loss of
properties. Unfortunately, the observed consequences can only be available after the dam breaks.
Therefore, it is important to anticipate what will happen prior to dam break to issue suitable warning and
locate the possible risk areas. This study attempts to simulate the case of dam break in Blue Nile at
Roseires dam and see its consequences downstream. Roseires dam lies at a distance of 630 km south of
Khartoum, Sennar dam lies at about 260 km downstream of Roseires dam. In this study hydraulic model
is developed based of Hydraulic Engineering Centre (HEC), River Analysis System (RAS), and HECRAS.
The HEC-RAS based model is calibrated and validated using observed data of the Blue Nile for
several flood years. The calibrated and validated model is used to analyze the impact of flood wave due to
dam break failure of Roseires dam to provide the following information: the maximum discharge, the
maximum water level, the maximum velocity, the velocity and depth profiles, the flooding extent, etc.
Several dam break scenarios that cover the possible failure modes were considered and the scenario that
gives the worst situation is present in this paper. Piping is considered as failure mode with different
failure parameters. It was found that failure of Roseires dam result in overtopping failure of Sennar dam
due to the inability of the Sennar reservoir and dam to withstand the flood wave. The results also
indicated that the maximum flood wave resulting from the failure of Roseires dam reaches Khartoum in 4,
6, 7 and 9 days when the maximum flow is 33105, 14724, 13249 and 12443 m3/s respectively the cities
(Roseires, Sennar, Wad Medani and Khartoum ). The respective water surface level of flood wave is
481.01, 428.37 and 382.5 m in Roseires, Sennar and Khartoum and the wave speed at Khartoum is 8.97
m/s
Our Clothes, New for Old
Get PDFThis paper deals with the significances and changes that may take place if we start to search
for a new means and ways to produce and use our clothes, use different types of fibers, change the
conventional and old farming practices, and wash our clothes in a different way. The paper is
valuable to a wide range of interested groups. It is for the people in business who have to balance their
personal ethics and their consumer’s needs for their business to grow. It is for consumers who have a
limited budget but are worried about the impact of their shopping choices. It is for campaigners and
those in education, government and the media to try to provide as balanced evidence as possible about
the present and future impacts of the textiles and clothing sector.
It tries to find the possibility for significant and lasting change by looking at what might happen if the
textiles industries sectors were to experience a change
Conflict Management and Preferred Style for Resolving Conflict
Get PDFThe purpose of this paper is what the common causes of conflict in Middle East (Egypt,
Qatar, Jordan, K.S.A and Kuwait), and what is preferred style for resolving conflict in these countries.
Conflict is inevitable and often necessary to management techniques build personality and relationships
high-performing teams will evolve through form, storm and norm, so the conflict is not the problem poor
management of the conflict is the problem, sometimes use power to win too emotionally involved and
others around you can solve the conflict by many methods intended for addressing conflict between
opponents also might be considered. This paper will provide an overview of the concepts of conflict,
where conflict occurs, differences between competition and conflict, conflict type, Common causes of
conflict, how to minimize the conflict, how to build team work, how to manage conflict, conflict strategy
and style, prefer style that using when resolve conflict and steps for resolving conflict. We make a
questionnaire in much country in Middle East in construction field. First we found that conflict is natural
and should be happened between teams up to 95%. Secondly we found the most reason that increases
conflict is due personality issues (personal chemistry) up to 90%. At last we found that up to 90% of
managers are using collaborating and accommodating as a mode of conflict resolving, which is found to
be more commonly used in handling conflict. The paper presents a useful source of information which
would benefits organizations in its globalization, which has faded the national boundaries and has brought
people of different culture to work together on a single platform