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حذف يا كاهش زمينه هاي بروز فساد اداري با كاربرد رويكرد نظامند پوكايوكه

عنوان مقاله: حذف يا كاهش زمينه هاي بروز فساد اداري با كاربرد رويكرد نظامند پوكايوكه

قالب بندي: word

قيمت: 2300 تومان

شرح مختصر: مطالعه تاريخ نشان مي دهد فساد در جوامع بشري قدمتي بهاندازه تمدن داشته و اكنون نيز يكي از مسائل مبتلا به كشورهاي جهان مي‌باشد.فساد اداري به اقداماتي اطلاق مي‌شود كه ناشي از بكارگيري قدرت و توان سازمانهاي دولتي و يا وابسته به دولت براي كسب منافع مالي فردي و يا گروهي است. فساد اداري، عارضه‌اي است كه امروزه گريبان‌گير همه كشورها - توسعه يافته يا كم‌تر توسعه يافته، دموكراتيك (ضعيف يا قوي) و غير دموكراتيك - مي‌باشد. بهسخن ديگر، هيچ كشور پاكي به لحاظ فساد اداري در جهان وجود ندارد. متاسفانه روش هاي مختلف ارائه شده در كشور براي مقابله با اين معضل تاكنون اثر بخشي چنداني نداشته است. اگر چه جامعه ايران ، جامعه اي توام با گرايشهاي مذهبي و ملياست كه همه آنها فساد را پديده اي زشت شناخته اند و همواره تاكيد بر مبارزه با آنكرده اند ، با اين حال شاهد اين هستيم كه شيوع فساد در جامعه مسير بسياري ازپيشرفتهاي اجتماعي و ملي را بسته و هزينه هاي هنگفتي را بر دوش كشور و در نهايتمردم گذاشته است به گونه اي كه سازمان شفافيت بين المللي جايگاه ايران را از ميان 180 كشور جهان در رده 168 قرار داده است. با توجه به اين موارد، ضرورت نگاهي نو به مساله و بازتعريف آن جهت ارائه راهكارهايي متفاوت با آنچه تاكنون ارائه شده ضروري به نظر مي رسد. سوال اساسي اين تحقيق آن است كه چگونه مي توان اصولا بستري ايجاد كرد كه فساد اداري در آن بستر اجازه ظهور نيابد و سيستم هاي اداري را حتي الامكان خطا ناپذير ساخت؟

تحليل موزه كودكان

سال ساخت 1987

ناپرويل (ايلي نويز)

زيربنا 44000فوت مربع

طراح پروژه peter Exley

فايل مورد نظر پاورپوينت بوده و داراي 20 اسلايد ميباشد.

انرژي تجديدپذير و تجديد ناپذير

انرژي تجديدپذير و تجديد ناپذير

انرژي ها به دو نوع تقسيم ميشوند:

-تجديد پذير:جايگزين ميشوند و فاني نيستند

-تجديد ناپذير:زوال پذيرند و منابعشان محدود است

فايل مورد نظر پاورپوينت بوده وداراي 72 اسلايد ميباشد.

آموزش گوگل پلاس

آموزش-گوگل پلاس-كارآفريني-كامپيوتر-علم-شكوفايي-توافق هسته اي

مقاله جوشكاري Characterization of microstructure and deformation behaviour of resistance spot welded AZ31 magnesium alloy

مقاله جوشكاري با عنوان : Characterization of microstructure and deformation behaviour of resistance spot welded AZ31 magnesium alloy

N. Kishore Babua,∗, S. Brauserb, M. Rethmeierb,c, C.E. Crossd

چكيده :

Resistance spot welds were prepared on 3 mm thick sheets of continuous cast and rolled AZ31 magnesium
alloy. The microstructure and composition analysis of weld nugget, heat affected zone (HAZ)
and base metal were examined using optical and scanning electron microscopy (HR-SEM and EDS/X).
The resistance spot welded magnesium alloy joints consist mainly of weld nugget and HAZ. The nugget
contains two different structures, i.e. the cellular-dendritic structure at the edge of the nugget and the
equiaxed dendritic structure in the centre of the nugget. The structure transition is attributed to the
changes of solidification conditions. In the HAZ, grain boundary melting occurred and grain boundaries
became coarse. It has been shown that hardness reduction in the weld nugget and HAZ compared with
base metal is evident due to dendritic microstructure and grain growth, respectively. The results showed
that spot welded joints have failed in interfacial mode under torsion and tensile–shear loading conditions.
Digital image correlation during tensile–shear testing showed that low surface strains occur in the
interfacial failure mode, because fracture and deformation happened primarily in the nugget area.

اختراعات عجيب

آموزش-اختراعات-كارآفريني-كامپيوتر-علم-شكوفايي-توافق هسته اي

آموزش خوشنويسي

آموزش-خوشنويسي-كارآفريني-كامپيوتر-علم-شكوفايي-توافق هسته اي

مقاله جوشكاري Effect of electromagnetic stirring on the microstructures and mechanical properties of magnesium alloy resistance spot weld

مقاله جوشكاري با عنوان : Effect of electromagnetic stirring on the microstructures and mechanical properties of magnesium alloy resistance spot weld

Q. Yao, Z. Luo ⇑, Y. Li, F.Y. Yan, R. Duan

چكيده :

This paper investigates the effect of electromagnetic stirring (EMS) on the nugget formation, microstructure,
and mechanical properties of magnesium alloy resistance spot weld (RSW). The EMS was induced by
an external magnetic field (EMF), which produced by a pair of permanent magnets. The results showed
that the EMS drove the molten metal in the nugget to flow clockwise and generated a centrifugal movement,
which brought high temperature molten metal from the center of the growing nugget to its edge.
Compared with the traditional magnesium alloy RSW, the weld under the EMS effect (EMS-RSW) exhibited
larger weld diameter, higher tensile shear force and energy absorption, and finer equiaxed crystal
and columnar crystal. The EMS-RSW had a higher hardness ratio of fusion zone to pullout failure location,
which indicated that the EMS-RSW was more sensitivity to experience pullout failure. Finally, an empirical
failure load formula for magnesium alloy resistance spot weld was developed.

مقاله جوشكاري Effects of welding parameters on the characteristics of magnesium alloy joint welded by resistance spot welding with cover plates

مقاله جوشكاري با عنوان : Effects of welding parameters on the characteristics of magnesium alloy joint welded by resistance spot welding with cover plates

Hongxin Shi a,b,*, Ranfeng Qiu a, Jinhong Zhu a, Keke Zhang a, Hua Yu a, Gaojian Ding

چكيده :

Magnesium alloy AZ31B sheets were welded using the technique of resistance spot welding with cover
plates. The effects of welding parameters on the characteristics of the joint were investigated. The joint
with larger nugget and higher tensile shear load was obtained under relatively low welding current condition.
Enhancing electrode force and extending down-sloping time are effective for inhibiting pores formation
and increasing the tensile shear strength of the joint under corresponding welding conditions.
The results reveal that the technique is feasible to weld magnesium alloy.

مقاله جوشكاري Electrical contact resistance effect on resistance spot welding

مقاله جوشكاري با عنوان : Electrical contact resistance effect on resistance spot welding

P.S. Wei a,., T.H. Wub

چكيده :

The effects of local electrical contact resistance on transport variables, cooling rate, solute distribution,
and nugget shape after solidification responsible for microstructure of the fusion zone during resistance
spot welding are realistically and systematically investigated. The model accounts for electromagnetic
force, heat generation and contact resistances at the faying surface and electrode–workpiece interfaces
and bulk resistance in workpieces. Contact resistances are composed of film and constriction resistances,
as functions of hardness, temperature, electrode force and surface condition. The computed results show
that the bulk dynamic electrical resistance cannot reliably reflect transport processes and nugget shape,
unless the local constriction resistance and electric current density are known. Regardless of high film
resistance, nugget growth and transport processes are independent of film resistance due to delayed
response time of local electric current in the early stage. A decrease in constriction resistance, however,
delays nugget formation, enhances convection and solute mixing, and changes circulation direction of the
stronger convection cell during cooling period.