Antenna arrays are used in many different systems, including radar, military and wireless communications. The design of the antenna array has a significant impact on how well communication system performs. large number pieces sidelobe levels provide biggest hurdles for such arrays. have recently been heavily thinned using optimization approaches that take advantage evolutionary algorithms order...

Governance at both intergovernmental and UN system level includes oversight of funding volume, modalities and mechanisms. Thus the recommendation to improve governance will ipso facto include oversight of funding modalities and mechanisms. This will be true at the level of the GA, ECOSOC, the Executive Boards and other governance structures. Moreover, agreements reached by the GA on funding wil...

A method for the parallel solid-phase synthesis (SPS) of iodinated analogues of Sanofi-Aventis' type 1 cannabinoid (CB1) receptor inverse agonist rimonabant (acomplia) has been developed. The method allows the synthesis of a range of C3 amide/hydrazide derivatives from a resin-bound C3 ester precursor. The C-Ge linkage to the Hypogel-200 resin is stable to the diversification conditions but all...

The paper puts forward an unmanned aerial vehicle (UAV) fixed-point reconnaissance route planning method. The method introduces the improved particle swarm optimization (IPSO) method to the planning of UAV reconnaissance route and adds the objective value, effective reconnaissance route and other factors affecting UAV reconnaissance route in the objective function of particle swam to obtain the...

In the title compound, [Sn(C(6)H(5))(3)(C(10)H(13)OS)]·0.17C(6)H(6), the Sn(IV) atom exhibits a slightly distorted tetra-hedral coordination geometry built up by four C atoms, which are the three ipso-C atoms of the phenyl rings and the α-C atom of the deprotonated γ-O-functionalized propyl phenyl sulfide. The benzene mol-ecule lies about a threefold rotoinversion axis.

With the crisis of energy and environment, integrated systems (IES) have a bright prospect in future reform owing to excellent economic environmental performance. The IES combines large amount renewable (RE), which guarantees its benefits. Many uncertainties RE threaten performance IES. How promote consumption under strong is crucial problem scheduling In this work, two-stage strategy for combi...

in this paper, a location allocation (la) problem in construction and demolition (c&d;) waste management (wm) is studied. a bi-level model for this problem under a fuzzy random environment is presented where the upper level is the governments who sets up the processing centers, and the lower level are the administrators of different construction projects who control c&d; waste and the after tre...

صفحه‌­ی مینیاتوری LEU پرتودهی شده در رآکتور تحقیقاتی تهران که برای تولید رادیوایزوتوپ مولیبدن-99 استفاده می‌شود، منبع پرتوزایی متشکل از رادیوایزوتوپ‌های مختلف است. محاسبه و تخمین آهنگ دز تابش‌های گامای گسیلی این منبع، به منظور مقایسه با مقادیر مجاز توصیه حمل‌ونقل مواد پرتوزا حفاظت پرتویی کارکنان حین انجام تست‌های آزمایشگاهی داغ، پیش هر اقدام عملی، امری ضروری مقاله، اعتبار یک روش پیشنهادی جهت هد...