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Showing posts from October, 2016
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I have wanted to write the following message many times, but each time was too shy to do it. However, the situation really has become almost unbearable. Brothers and sisters, when you meet me, PLEASE do not ask for a selfie or picture with me. I understand that you feel a sense of happiness and/or pride, and would like to share that moment with others. I am touched that you show so much love. At the same time, it is highly awkward for many reasons. 1 Firstly, and without any false humility, I am not worthy of such respect. I am a person just like you, with my faults and sins. If you appreciate something that I say, make du'a for me and my family. Taking a selfie with me will not earn you rewards, and is a potential source of temptation for me and others. 2 Secondly, it feeds into a 'celebrity Shaykh' culture which I truly despise, even if at times all of us fall into aspects of it. People of knowledge are not rock stars or pop icons. They should be respected, yes, but not…
Professor of Naval Architecture is responsible for: Developing and delivery of academic courses at post-graduate level that meet the needs of the MoD, UCL and other customers and are accredited by appropriate professional bodies.Directing the post-MSc course in submarine design and specific lecturing on Submarine Design and Acquisition.Support to MTEC and UCL’s engineering undergraduate courses.Lead areas of research and development into the challenges facing the maritime sector.Supervise undergraduate and master’s level design and research projects.Act as personal tutor to engineering undergraduate students and act as a supervisor for PhD research students.Being an External Examiner for other university courses and establishing student evaluation methods and procedures.Undertaking or managing contract work, including overseas teaching contracts.General administration of MoD and foreign government students.Provision of computing facilities and software as required to support ship and…
The uncertainty of theoretical predictions of hydrodynamic forces based on Morison model may be easily determined. If inertia and damping coefficients are correctly selected, the wave forces over small structural elements can be accurately estimated. The model predicts well the hydrodynamic loading, except in an intermediate region where the Keulegan-Carpenter number is between 8 and 25. This region corresponds to the situation in which both hydrodynamic coefficients are similar and strongly dependent from flow turbulence and surface roughness. The correlation between our theoretical predictions and experimental measurements earlier obtained in wavetank (see Mendes et al. [3]) reflects, inevitably, important scale effects. From the above considerations it appears convenient to conduct a deeper theoretical analysis of the fluid-structure interaction, based on higher-order wave theories, aiming to put in evidence the real non-linearities in extreme sea conditions. We must equally keep i…
The design and installation operations of riser and mooring Systems. Emphasis is made on design of deep water moorings and riser system by the accepted industry practices and design codes and criteria. It starts with the types and layout of risers layout and geometry of mooring and line types. Then the riser and mooring line design cycle is introduced and in this section calculate the environmental loads pretension and static equilibrium, and Vortex Induced Vibration (VIV), and analyze the static and dynamic performances including floater. The students also solve the dynamic performances of riser/mooring lines using simulation software (eg. MOSES) and analyze the fatigue of riser and mooring chains.
According to the API code [17], the following design conditions must be considered in the analysis of offshore structures:
(i) Design for in-place conditions, which will include resistance of the structure to gravity loads, wind–wave–current loads, ice loads, earthquake loads, and accidental (including impact) loads. The loads computed for the structure must consider the maximum loads likely to be exerted during the drilling, production, and work-over operations, singly or in combination. In addition, the fatigue resistance requirements of the structure also must be considered.
(ii) The structural analysis must also consider the loads that will be applied on the structure during its fabrication, transportation, and installation operations. If offshore structures are to be relocated to new sites, then loads resulting from the removal, site-loading onto barge, transportation, and installation should be considered.
(iii) The strength of stability check to be applied to the design of indi…
Dr Yusuf al-Qaradawi telah menggariskan 10 jalan penyelesaian ekonomi Islam, yang merupakan sebahagian daripada ciri-ciri penyelesaian Islam itu sendiri, iaitu:
1.Memberi peluang pekerjaan yang sesuai kepada semua penduduk yang berupaya bekerja (job creation). Islam menganggap pekerjaan adalah hak penduduk dan kerajaan wajib menyediakannya dengan peluang latihan kemahiran yang mencukupi. Dengan itu, semua orang yang berupaya bekerja akan memperoleh pekerjaan dan dapat menyara kehidupan dirinya sendiri.
2.Memberi ganjaran saksama (fair compensation) kepada semua pekerja berpadanan dengan kerja yang dilakukan dan mencukupi perbelanjaan yang sepatutnya. Ini ditunjukkan oleh Rasulullah SAW yang telah membahagikan harta rampasan perang dengan kadar satu bahagian kepada tentera pejalan kaki dan dua atau tiga bahagian kepada tentera berkuda. Selain itu, Baginda telah membahagikan harta al-fai’ satu bahagian kepada tentera yang masih bujang dan dua bahagian kepada tentera yang telah berkahwin.
3…
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Cash Flow Control Just as jet fuel keeps a plane aloft, cash fuels business. A pilot is very careful to accurately predict the fuel requirements. You should place the same importance on cash flow control because if at any point in the future, you run out of fuel, like the pilot, you've got a BIG problem. Cash flow control is a simple method of projecting your future needs for cash. It is an income statement covering future periods of time that has been changed to show only cash: cash coming in and cash going out and what your balance of cash is at the end of designated periods of time. This is a great tool because you can predict your future needs for cash before the needs arise. In cash flow control, for each of a number of intervals of time, you make conservative estimates for your future sources of cash (IN) and future expenditures (OUT). Use low, conservative figures for IN items and use high estimates for OUT items. For the initial period, say a month, you start with the cash…
IBN AL-JAWZI`Abd al-Rahman ibn `Ali ibn Muhammad ibn `Ali ibn `Ubayd Allah ibn `Abd Allah ibn Hammadi ibn Ahmad ibn Muhammad ibn Ja`far ibn `Abd Allah ibn al-Qasim ibn al-Nadr ibn al-Qasim ibn Muhammad ibn `Abd Allah ibn al-Faqih `Abd al-Rahman ibn al-Faqih al-Qasim ibn Muhammad ibn Khalifat Rasul Allah -- Allah bless and greet him -- Abi Bakr al-Siddiq, Abu al-Faraj ibn al-Jawzi al-Qurashi al-Taymi al-Bakri al-Baghdadi al-Hanbali al-Ash`ari (509/510-597). He was, with Shaykh `Abd al-Qadir al-Gilani, the imam of Hanbalis and foremost orator of kings and princes in his time whose gatherings reportedly reached one hundred thousand, a hadith master, philologist, commentator of Qur'an, expert jurist, physician, and historian of superb character and exquisite manners. Orphaned of his father at age three, Ibn al-Jawzi was raised by his aunt who later brought him to the hadith scholar Ibn Nasir, his first shaykh. He took hadith from him as well as over eighty shaykhs and was teacher to h…
The Jews and Hypocrites In the first year of his reign at Yathrib the Prophet made a solemn treaty with the Jewish tribes, which secured to them equal rights of citizenship and full religious liberty in return for their support of the new state. But their idea of a Prophet was one who would give them dominion, not one who made the Jews who followed him brothers of every Arab who might happen to believe as they did. When they found that they could not use the Prophet for their own ends, they tried to shake his faith in his Mission and to seduce his followers, behavior in which they were encouraged secretly by some professing Muslims who considered they had reason to resent the Prophet’s coming, since it robbed them of their local influence. In the Madinah’s surahs there is frequent mention of these Jews and Hypocrites. The Qiblah Till then the Qiblah (the place toward which the Muslims turn their face in prayer) had been Jerusalem . The Jews imagined that the choice implied a leaning t…
Shear and BendingLecture 1: Shear and Bending (PDF)Lecture 2: Balance (PDF)2Characteristics of Thin Walled SectionsLecture 3: Bending Without Twist (PDF)Lecture 4: Pure Twist Open Section (PDF)Lecture 5: Pure Twist Closed Section (PDF)Lecture 6: Pure and Warping Torsion (PDF)Lecture 7: Calculation Of Section Properties - Open (PDF)
[This consists of four parts (and how we will treat each) (suggest printing at most pages 1-9)
A - derivation of geometric algorithms for section properties (cover quickly for sense of approach)
B - derivation of first moment approach (for info - not covered)
C - computational routine resulting from A (demo a few examples - routine available in lab)
D - computational routine resulting from B (routine available in lab)]Lecture 7a: Calculation of Section Properties Closed (PDF)Lecture 8: Shear Center - Closed Section (PDF)
Includes example problem.Lecture 8a: Shear Stress Multicell Section (PDF)
Example problem separate.Lecture 8b: St. Venant Torsion Multi-cell (PD…