Спутник ДЗЗ. QSat. [Редактировать]

QSat – китайский коммерческий спутник дистанционного зондирования Земли, предназначенный для проведения экспериментальной отработки камеры высокого разрешения. Спутник был разработан в китайском Институте оптики, точной механики и физики (CIOMP). Масса аппарата 54 кг. Разрешение камеры составляет до 5 метров. Помимо этого на борту аппарата также размещены транспондеры радиолюбительской связи. Габариты аппарата 40х40х60 см.

Дополнительная классификация

#Наименования
1Страна производитель - Китай
2Страна оператор(владелец) - Китай
3Тип оператора(владельца) - коммерческий
4Тип орбиты - НОО
5Все спутники ДЗЗ

Технические характеристики

#ХарактеристикаЗначение
1Масса, кг54
2Габариты, см40х40х60
3Разрешение, метра5

Информация об удачном запуске

#ХарактеристикаЗначение
1Космодром Цзюцюань
2Дата пуска2015-10-07
3Полезная нагрузка 1xLingqiao B
4Полезная нагрузка 1xLingqiao A
5Полезная нагрузка 1xJilin 1
6Полезная нагрузка 1xQSat
7Ракета-носитель 1xВеликий поход 2D

Найдено 154 документов по запросу «QSat». [Перейти к поиску]


Дата загрузки: 2017-01-16
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0.18/5
...  ai2_.11  (V _ QSPt C  V _ QSPt D  V _ QSPt E  QSAt  QSBt  USLt  QSTt ), (22) где..., газа и воды в момент t, млн. руб. QSAt Продукция сельского хозяйства в момент t, млн...  IFO _ PIN t  ai2_.33  IFO _ QSAt 1 , (43) где: IFO _ V _ QSPt DA... денежные доходы населения в период t, % к (t-1) IFO _ QSAt 1 Индекс производства продукции сельского хозяйства... следующей формуле: QSAt  QSA(t 1)  IFO _ QSAt  INF _ QSAt 10000 (80) , где: QSAt Продукция сельского хозяйства в момент t, млн. руб. QSAt 1 Продукция сельского хозяйства в момент (t-1), млн. руб. IFO _ QSAt Индекс производства... продукции сельского хозяйства в хозяйствах INF _ QSAt всех категорий в момент t, % к (t-1) Показатели «Продукция... следующей формуле: QSAt  QSA _ rt  QSA _ gt , (81) где: QSAt Продукция сельского... формуле: QSAt  QSA _ orgt  QSA _ fermt  QSA _ pplt , (82) где: QSAt Продукция... формуле: INF _ QSAtQSAt *10000, (QSA(t 1)  IFO _ QSAt ) (83) где: QSAt Продукция сельского хозяйства в момент t, млн. руб. QSAt 1 Продукция сельского хозяйства в момент (t-1), млн. руб. IFO _ QSAt Индекс производства... продукции сельского хозяйства в хозяйствах INF _ QSAt всех категорий в момент t, % к (t-1) Ретроспективные данные... документа). IFO _ QSAtQSAt  10000, QSA(t 1)  INF _ QSAt (85) где: QSAt Продукция сельского хозяйства в момент t, млн. руб. QSAt 1 Продукция сельского хозяйства в момент (t-1), млн. руб. IFO _ QSAt Индекс производства... продукции сельского хозяйства в хозяйствах INF _ QSAt всех категорий в момент t, % к (t-1) 3.5.2.2.3. Индекс-дефлятор... формулу:   INF _ QSAtRF  h   RF INF _ QSAt  INF _ QSAt  h  INF _ QSA  t h    h ai2_.41... продукции сельского хозяйства в хозяйствах INF _ QSAt всех категорий в момент t, % к (t-1) Индекс-дефлятор продукции сельского хозяйства в хозяйствах INF _ QSAt h всех категорий в момент (t-h), % к (t-h-1), где h – глубина... )  QSA _ g t  ln( INF _ QSA _ g t )  , INF _ QSAt  exp  QSA _ r  QSA _ g t t   где: (87... продукции сельского хозяйства в хозяйствах INF _ QSAt всех категорий в момент t, % к (t-1) QSA_ rt... формуле: QSA _ rt  QSAt  QSA _ gt , (88) где: QSAt Продукция сельского хозяйства... _ orgt  QSAt , 100 DQSA _ fermt  QSAt QSA _ fermt  , 100 DQSA _ pplt  QSAt QSA _ pplt  , 100 QSA _ orgt  где: (94) QSAt Продукция сельского... _ orgt  10000, QSA _ orgt 1  INF _ QSAt (95) где: Продукция сельского хозяйства... продукции сельского хозяйства в хозяйствах INF _ QSAt всех категорий в момент t, % к (t-1) 3.5.2.2.12. Продукция... _ fermt  10000, QSA _ fermt 1  INF _ QSAt (96) где: Продукция сельского хозяйства... продукции сельского хозяйства в хозяйствах INF _ QSAt всех категорий в момент t, % к (t-1) 3.5.2.2.14. Продукция... _ pplt  10000, QSA _ pplt 1  INF _ QSAt (97) где: QSA_ pplt Продукция... хозяйства в хозяйствах населения в момент t, % к (t-1) INF _ QSAt Индекс-дефлятор продукции сельского хозяйства... * INF _ QSPt DA  ai3_ 2 * INF _ QSAt  ai3_ 3 * IPC(t 1) , (121) где: IPCt... продукции сельского хозяйства в хозяйствах INF _ QSAt всех категорий в момент t, % к предыдущему году...  ai4_ 2  IFO _ QSPt  ai4_ 3  IFO _ QSAt ), CURSt 1  INF _ VRPt (151) где... объема продукции сельского хозяйства в IFO _ QSAt момент t, млн. руб. Статистический ai4_1... модели: QSAt QSBt V _ QSTt   7 V _ QSPt  ai7_ 2 *  ai7_ 3 *  ai7_ 4 *  ai _ 1 *  V _ QSPt 1 QSAt 1 QSBt... собственными силами в момент t, млн. руб. QSAt Продукция сельского хозяйства в момент t, млн...



Дата загрузки: 2017-02-18
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0.11/5
Beyond NP: the QSAT phase transition Ian P. Gent Toby ... Pspace-complete problems like random Qsat. Most of the di erences... et al. report for random Qsat problems (for instance, no xed...) is quanti ed satis ability (Qsat). This is the prototypical Pspace... nition of constrainedness 5] again useful? 2 QSAT Qsat is the problem of deciding... existential and vice versa. A k-Qsat problem is a Qsat problem in which there... example above is thus in 2-Qsat. 1-Qsat problems are equivalent to Sat....ac.uk/~apes/apereports.html 1 Qsat is a more complex decision problem... is NP-complete, Qsat is Pspace-complete, and k-Qsat is k P-complete 7]. There... simpler way of explaining k P-completeness: k -Qsat is the canonical problem in... the quanti ed formulae in a Qsat problem to conjunctive normal form... the complexity of the problem. Qsat with formulae in cnf remains Pspace-complete, and k-Qsat with formulae in 3-cnf remains...-complete. Indeed, we can see Qsat as a game between the existential... an unsatis ed formula. 3 Random QSAT Cadoli et al. 2] generalize the... clause model from Sat to Qsat. In this generalized model, we... satisfaction problems 1]. As l increases, random Qsat problems generated by Cadoli et....'s generalized Davis Putnam procedure for Qsat. That is, we terminate a branch... parameters to 2]. We use random 2-Qsat problems with k = 3, n varying from 100... 0.03 0.02 0.01 0 0 0.2 0.4 C 0.6 0.8 1 0 l/n 0.2 0.4 D 0.6 0.8 1 l/n Fig. 1. Random 2-Qsat problems from Cadoli et al... satis able problems for random 2-Qsat problems generated by model A, with... median search cost for random 2-Qsat with k = 5, n varying from 5 to 15... 1000 100 0.2 0 10 0 0.5 1 1.5 A 2 l/n 2.5 3 3.5 4 0 0.5 1 1.5 B 2 l/n 2.5 3 3.5 4 Fig. 2. Random 2-Qsat problems from model A generated with... 16 18 20 Fig. 3. Random 2-Qsat problems from model A generated with... plot results for for random 2-Qsat problems generated by model B in... 300 200 100 0 0 0 0.5 1 1.5 A 2 l/n 2.5 3 3.5 4 0 0.5 1 1.5 B 2 l/n 2.5 3 3.5 4 Fig. 4. Random 2-Qsat problems from model B generated with... determine the constrainedness of random Qsat problems, we must decide upon... to describe a state. For random 1-Qsat problems, we need n bits to... each needing 1 bit. For random 2-Qsat problems, we need n2n bits... for the existentials. For random 3-Qsat problems, we need n bits to... total. This argument generalises to k-Qsat for any k. If we need sk bits to specify a k-Qsat state for k even, we need... + n bits to specify a state for k +1-Qsat. And if we need sk bits to specify a k-Qsat state for k odd, we need... sk bits to specify one k-Qsat state for each of the... universal variables and hence a k + 1-Qsat state. Thus, 1 ? Qsat 2 ? Qsat 3 ? Qsat 4 ? Qsat 5 ? Qsat 6 ? Qsat ::: problems have size problems... ? Qsat problems have size (2i + 1) ? Qsat problems have size 6 Constrainedness of QSAT n n2n... formula for the constrainedness of Qsat problems. This can be specialized..., we also modify the random Qsat models to allow repetition of... state. Hence, for random 2i-Qsat or 2i + 1Qsat problems, we... problem Hence, for random 2i-Qsat, h X = ? nl Pi 1 jn log2 ( pj... )2in+j?h ) j =1 2 j =1 And, for random 2i + 1-Qsat, h X = ? nl Pi 1 jn log2 ( pj... pj = h =(2h ? h ? 1) for j > 1. j For random 2-Qsat, we get, h X = ? nl 21n log2... (1 ? 21h ) For 2-Qsat, this assumption is correct. However, for k-Qsat for k > 2, the... = 1 and pj = 0 for j 6= e. For random 2-Qsat , this gives, = ? nl 2e?h log2... model A. The constrainedness of random 2-Qsat problems from model B (or model... the constrainedness of such a random 2-Qsat problem is the same as... plot the fraction of random Qsat problems from model B that are.... In a Pspace problem like random Qsat, the variance in the number...



Дата загрузки: 2016-12-24
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0.08/5
Deterministic Solutions to QSAT and Q3SAT by Spiking Neural P ...-complete problems: QSAT and Q3SAT. In the case of QSAT, the answer...). The present paper deals with QSAT (the satisfiability of fully quantified... PSPACE-complete problems. For QSAT we provide a family {ΠQSAT (2n, m)}n,m∈N of SN... n, m ∈ N the system ΠQSAT (2n, m) solves all the instances of QSAT which are... variables and m clauses. Each system ΠQSAT (2n, m) is deterministic, and computes... n and m; however, the size of ΠQSAT (2n, m) is exponential with respect..., we provide a family Solutions to QSAT and Q3SAT by SN P Systems... of uniform), since the systems ΠQSAT (2n, m) and ΠQ3SAT (2n) have... provide an exp-uniform family {ΠQSAT (2n, m)}n,m∈N of SN P systems with... n, m ∈ N the system ΠQSAT (2n, m) solves all possible instances of QSAT containing 2n... of bin with x2 , respectively. QSAT is a well known PSPACE-complete... false. Formally, an instance of QSAT with n variables and m clauses is... Q3SAT is defined exactly as QSAT, the only difference being that... attention on the instances of QSAT and Q3SAT in which all... xn (C1 ∧ C2 ∧ . . . ∧ Cm ) of QSAT having n variables and m clauses there... 2n variables, where Solutions to QSAT and Q3SAT by SN P Systems... of all possible instances of QSAT, expressed in the above normal... manner in each Solutions to QSAT and Q3SAT by SN P Systems... (as is the case of QSAT, where n is the number of... solve all the instances of QSAT and Q3SAT of a given size.... 3 An exp-Uniform Solution to QSAT In this section we build an exp-uniform family {ΠQSAT (2n, m)}n,m∈N of SN P systems such... n, m ∈ N the system ΠQSAT (2n, m) solves all the instances of QSAT (2n, m) in... a deterministic way. The instances of QSAT (2n, m) to be given as input to the system ΠQSAT (2n, m) are encoded as sequences...−1 ∀x2n (C1 ∧C2 ∧. . .∧Cm ) of QSAT (2n, m), let code(γ2n,m ) = α11... encoding sequences of Solutions to QSAT and Q3SAT by SN P Systems... of QSAT (2n, m) is denoted by code(QSAT (2n, m)). For instance, QSAT (2, 1) contains... ∨ x2 , γ2,1 = ¬x1 ∨ ¬x2 . Therefore, 2 2 2 2 code(QSAT (2, 1)) = {λλ, λa, λa , aλ, aa, aa , a λ, a a, a2 a2 }. The... solves all possible instances of QSAT (2n, m) is illustrated in a schematic... of the form ΠQSAT = (ΠQSAT (2n, m), code(QSAT (2n, m))) with: • ΠQSAT (2n, m) = (O, µ, in, out... and output neurons, respectively; • code(QSAT (2n, m)) is the set of... all the possible instances of QSAT (2n, m), as defined above. Fig. 1. The input module of ΠQSAT (2n, m) The system is composed... neurons are used. Solutions to QSAT and Q3SAT by SN P Systems.... 2. Structure of the SN P system ΠQSAT (2n, m) The output module only... when solving a given instance γ2n,m ∈ QSAT (2n, m). • Input: The input module... Cj , it will Solutions to QSAT and Q3SAT by SN P Systems... + 6. Since all the instances of QSAT (2n, m) are in the normal... number m of clauses appearing in a QSAT (2n, m) problem may be very... system solves the instances of QSAT (2n, m), for specified values of... solve all the instances of QSAT (2, 2) is pre-computed as illustrated... σd2 and σCx1 , Solutions to QSAT and Q3SAT by SN P Systems... structure of the SN P system ΠQSAT (2, 2) 16 T.-O. Ishdorj et al. while... cannot be activated. Solutions to QSAT and Q3SAT by SN P Systems... are defined like those of QSAT, with the additional constraint that... that may appear in a formula γn,m ∈ QSAT (n, m) is exponential with respect to... illustrated in Figure 3 Solutions to QSAT and Q3SAT by SN P Systems... clause; only the Solutions to QSAT and Q3SAT by SN P Systems... 10 and 11. Solutions to QSAT and Q3SAT by SN P Systems... a neuron that contains Solutions to QSAT and Q3SAT by SN P Systems... paper we have shown that QSAT, a well known PSPACE-complete problem... still PSPACE-complete) version of QSAT in which all the clauses... solve all the instances of QSAT (or Q3SAT), expressed in a normalized..., 7, 2 (2008), 147–166. Solutions to QSAT and Q3SAT by SN P Systems...



Дата загрузки: 2017-06-15
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0.13/5
2008-f-20 QSAT: A Low-Cost Design for 50kg ... started the satellite project named QSAT (Kyushu Satellite) in 2006. The primary objectives of the QSAT mission are 1) to investigate plasma... orbit with ground-based observations. QSAT has two payload instruments, two... is named QSAT (Kyushu Satellite). The primary mission of QSAT is the... be described in the section 2. QSAT is designed to be launched...) are developing its payload instruments. QSAT has two kinds of payload... 1 2. Mission Objectives spacecraft charging when QSAT passes through the FAC region... references 3-4). The objectives of the QSAT project are the following. 3. Development Policy Primary objectives of QSAT: 1. investigation of plasma physics in... field-aligned currents (FACs) The QSAT project team consists of about... the satellite hardware units. The QSAT spacecraft consists of 6 subsystems, Attitude... working on each subsystem development. QSAT is based on a practical satellite... energy particles. Secondary objectives of QSAT: A) education and research opportunities for... introduces the basic characteristics of QSAT, the individual unit functions, and... and components. 4.1. Basic Characteristics The QSAT overview and basic characteristics are... and data handling subsystem of QSAT has an efficient internal data... of 1Mbps between the units. QSAT has two unique mechanical elements... science. To achieve these objectives, QSAT will simultaneously observe the magnetic.... 2. Overview of QSAT in orbit Fig. 3. System diagram of QSAT flight model... diagram of the QSAT Flight Model (FM). The QSAT in-orbit operations... OBC and application programs. The QSAT bus system has six major electronics units (See Fig. 3.); Table 1. QSAT Basic characteristics Mission Payloads Size... date rate is 1,200 bps. QSAT is designed for three-axis... 7). 4.3. Main Structure and Unit Layout QSAT main structure is designed in... on the inner side panel. QSAT has one central square room... structural and thermal analysis. Fig. 4. QSAT main structure (engineering model) Fig..., and decided to proceed with QSAT unit design. The integrated electronics... in reference 7). Fig. 8. QSAT Control Board overview Table 2. QSAT Control Board characteristics... the most valuable aspects of QSAT is the Control Board developed... interfaces. The power in the QSAT units is delivered by DC... most unique aspects of the QSAT spacecraft is its separation mechanism... the QSAT project as follows. 1) QSAT will offer a valuable scientific mission 2) QSAT uses...-cost COTS units 3) Experiences of QSAT’s Engineering Model have been analyzed... meet the H-IIA requirements. The QSAT project is also providing excellent... support and dedication of the QSAT team. References 1) Kawashima, R. et al... – 6 June 2004. 3) Hanada, T. et al.: QSAT the Satellite for Polar Plasma... 2007, 2007. 4) Kato, T. et al.: QSAT: Kyushu Satellite - for Polar Plasma... Ha: Attitude Determination Concept for QSAT, Paper presented at the 26th... Different Magnetorquer Control Laws for QSAT, Paper presented at the 26th.... May 2007, JAXA decided that QSAT will not be launched in...



Дата загрузки: 2017-06-15
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0.14/5
... computation; the quantum satisfiability problem (QSAT) does the same for quantum... argument that both SAT and QSAT must be hard. This kind... HAMILTONIAN and the closely related QSAT. In this section, we provide... of ‘typical’ instances of 3-SAT, 3-QSAT and other classical and quantum... closely related construction for the QSAT problem below, we do not... the slightly simpler problem of k-QSAT, which is QMA1 -complete for... accepted. First, let us define k-QSAT a bit more carefully: Input:: A quantum... that QSAT is QMA1 -complete. 1. QSAT is QMA1 To show that QSAT is... our verification scheme is sound. 2. QSAT is QMA1 -complete Just as... to solving an instance of QSAT. We again exploit the only... verifier and construct from it a QSAT 7 The feature that one can... is a special feature of the QSAT Hamiltonian which allows it somewhat... step in the reduction to k-QSAT is to represent the single... (two in [12]). The final 4-QSAT Hamiltonian will then be given... k-SAT and its quantum generalisation k-QSAT [12, 26]. A. Typical versus worst... the problem of quantum satisfiability k-QSAT, let us first ask whether.... IV. STATISTICAL MECHANICS OF RANDOM k-QSAT Let us now turn to... quantum satisfiability k-QSAT. As discussed in Section II F, k-QSAT is QMA1 -complete... in the quantum system. A. Random k-QSAT ensemble Let us recap the definition of k-QSAT from Section II F: Input:: A quantum... project onto computational basis states, k-QSAT reduces back to k-SAT – all... current state-of-the-art QSAT phase diagram is shown in... the fact that 2-QSAT is in P – instances of 2-QSAT can be efficiently... direct FIG. 7. Phase diagram of k-QSAT. • k>2 bounds are well separated: an... satisfiability of a generic instance of QSAT is a purely geometric property of... properties of generic instances of QSAT – such as whether they are... or not. Results about generic QSAT thus follow from identifying the... 1. Given an instance H of random k-QSAT with interaction graph G, the degeneracy...: this is a special instance of k-QSAT where the projectors are all... down the phase diagram of k ≥ 3-QSAT: construction of satisfying product states... satisfying states must exist for k-QSAT instances built out of interaction... bounded by 2k /(ek). The QSAT ensemble which we study in... satisfying subspaces. That is, for a QSAT projector Π of rank 1, the “probability... which satisfies the instance of k-QSAT. The Lovasz local lemma is... to study an ensemble of k-QSAT instances which always satisfy the.... Physical arguments suggest that the k-QSAT ensemble that we study here... that the UNSAT phase of k-QSAT has extensive ground state energy... at in the analysis of QSAT with the set of results... the performance of algorithms for QSAT or about the relationship between... paper: Running time scaling of a 2-QSAT adiabatic evolution algorithm. Princeton Junior...



Дата загрузки: 2017-01-16
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0.12/5
... km. Jsat ϭ Ά a(lnq Ϫ lnqsat ) 3; 0; q Ͼ qsat q Յ qsat , (2) where qsat is the specific humidity at... model FIG. 1. (a) Dependence of q/qsat and q L /qsat on qtotal /qsat (qtotal ϭ q ϩ q L ) and (b) derivatives... qtotal as a function of qtotal /qsat . Brightness temperature is computed with... it in fact does through qsat (T, p), a temperature bias is also present... q and q L Define RH qtotal ϭ qtotal /qsat ; then q depends on qtotal as... Ն RH1 : q ϭ RH1 qsat ϩ Csplit (qtotal Ϫ RH1 qsat ) RHqtotal Ն RH2 : q ϭ qsat [RH1 ϩ Csplit (RH2... ‫ץ‬Tb ‫ץ‬T ‫ץ‬q dqsat ‫ץ‬T ‫ץ‬q dq ϭ b ϩ b L sat . ‫ץ‬T ‫ץ‬q ‫ץ‬qsat dT ‫ץ‬q L ‫ץ‬qsat dT (B3) (B4) APPENDIX C Computation...



Дата загрузки: 2017-01-23
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0.19/5
... follows (Fig. 1): Let RHqtotal = qtotal/qsat, and constants RH1=0.95, RH2=1.05 and Csplit=0.5, where qsat is the specific humidity at... [ qtotal − RH1qsat ] (2) RH qtotal ≥ RH 2 : q = qsat ( RH1 + Csplit ( RH 2 − RH1 )) and.... q/qsat,qL/qsat 1.5 1.0 0.5 0.0 dq/dqtotal,dqL/dqtotal -0.5 0.0 0.2 0.4 0.6 0.8 qtotal/qsat 1.0 1.2 1.4 0.2 0.4 0.6 0.8 qtotal/qsat 1.0 1.2 1.4 1.5 1.0 0.5 0.0 -0.5 0.0 Figure 1 a) Dependence of q/qsat and qL/qsat on qtotal/qsat (qtotal... qtotal as a function of qtotal/qsat. The continuous line illustrates q and...



Дата загрузки: 2017-05-20
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0.37/5
... tester Qsat for quantified Boolean formulae and a restriction QsatCNF of Qsat to unquantified conjunctive normal form formulae. Qsat makes use... all variables have been eliminated. Qsat and QsatCNF can be applied... some complexity results for Qsat and QsatCNF . Qsat runs in linear time... Applied Mathematics 26 March 2002 Qsat is a new decision procedure for... model checking. The philosophy of Qsat is to test satisfiability of.... QsatCNF is an application of Qsat to unquantified clause form formulae... variables to be existentially quantified. Qsat and QsatCNF test satisfiability of... been eliminated. The motivation for Qsat and QsatCNF is that satisfiability... to perform. The idea of Qsat and QsatCNF is to import... reduces the amount of backtracking. Qsat and QsatCNF can be built... BDDs are currently used. Similarly, Qsat should be efficient for quantified... the outside in. That is, Qsat can choose to process a quantifier... US patent 6,131,078 on Qsat. 1 1.1 Terminology Boolean quantifiers and operators... z ↔ (x ∨ y) is (¬z ∨ x ∨ y) ∧ (¬x ∨ z) ∧ (¬y ∨ z). 7 2 High-level description of QSAT Let the relation be defined... all i, 1 ≤ i < n. The algorithm Qsat is as follows: procedure qsat(F ); find F such that... return error ; fi end qsat; Theorem 2 If Qsat(F ) returns true then F is a tautology and if Qsat(F ) returns false then F is unsatisfiable... F ∗ true or F ∗ false. Proof. If Qsat(F ) returns true then F ∗ true, so... and therefore F is a tautology. If Qsat(F ) returns false then F ∗ false, so... false. q.e.d. 8 The difficult parts of Qsat are (1) expressing B as B1 ∧ B2... large. 3 simp and sat procedures Qsat makes use of two procedures... sat are applied repeatedly in Qsat. The procedure simp takes a Boolean... formula is satisfiable. The method Qsat works in smaller steps, which... a quantified Boolean formula F according to Qsat is to find a sub-formula... to ∃z[(x ∨ y ∨ z) ∧ (x ∨ y ∨ ¬z) ∧ (¬x ∨ ¬y ∨ z) ∧ (¬x ∨ ¬y ∨ ¬z)]. 14 An optimization to Qsat is to speed up the... for QSAT It is possible to bound the complexity of Qsat on... most k free variables. Theorem 5 If Qsat is applied to a formula A that... and is k width bounded, and Qsat is called in inner mode... of A and exponential in k. Proof. Qsat will perform a sequence of calls... preceding theorem then shows that Qsat can decide the satisfiability of... the free variables of S. Applying Qsat to ∃Z[S] gives a procedure to test... Boolean formula S is satisfiable. If Qsat(∃Z[S]) returns true then S is satisfiable... obtain the restriction QsatCNF of Qsat to clause form formulae S. The... Qsatand QsatCNF , we show how Qsat could be implemented using only... of simpCNF . In this way, Qsat could be implemented on top... clause form formulae, even though Qsat itself is defined more generally...’s are constructed. In the tables, QSAT indicates QsatCNF . For the IFIP... several long thin problems. 33 QSAT problem total GRASP SATO BDD1... cut cut cut renumbered vbls QSAT QSAT QSAT g=250 g=100 g=10 original times.... This would not apply to Qsat on clause form formulae because... of the resolution operations. Also, Qsat has a global approach to choosing... Some theoretical results show that Qsat is efficient on a class of... variable ordering. One advantage of Qsat is that one has some a priori measure of how well Qsat will perform on a quantified Boolean... k and make Qsat more efficient, or not use Qsat on unsuitable formulae... a formula have to be for Qsat and QsatCNF to be efficient... thin formulae. 14 Conclusions The Qsat algorithm for testing satisfiability of... by Truemper [25]. Applications of Qsat and QsatCNF to symbolic model...



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... Concept and Mission Analysis of QSAT Alexander Uryu University of Stuttgart... concept for the small satellite QSAT. It aims to guarantee the... planned lifetime of one year. QSAT is developed at the Space... gives the break-down of QSAT lifetime into specific phases and... unit configuration of QSAT. More information on the QSAT system design can... found in [1]. The small satellite QSAT is under development at the... industries [1]. Figure 2: Overview of QSAT Units Figure 1: QSAT System Overview 1 All tasks... the survival of the spacecraft. QSAT uses the amateur-frequency band... develop an adequate operations plan. QSAT will be launched into a sun... Japanese Aerospace eXploration Agency (JAXA). QSAT undertakes scientific investigations into the... of satellite systems [2]. QSAT REQUIRMENTS Table 1 shows all QSAT project requirements. These... earth Table 1: Overview of QSAT System Requirements QSAT is equipped with three.... For the first time, the QSAT mission also takes FAC’s into... 4 shows the access times of QSAT with the KUGS ground-station... obtain a proper operations concept for QSAT. This concept was derived following... during the one-year lifetime. QSAT´s mission lifetime is organised into... After detachment from the launcher, QSAT’s orbital lifetime starts with the... on. During the ‘Attitude Stabilisation’, QSAT acquires its operating attitude. In... mission. Access Duration [min] 10 8 6 4 2 QSAT MODES 0 1 3 5 7 9 Specific modes are defined... 39 41 Orbit Number [-] Figure 4: QSAT Visibility Intervals 40 Mean Value... 35 34  ‘Housekeeping Mode’: Standard QSAT mode, basic operations are performed... Time per Day Table 2 summarises QSAT´s volume of downlink data per...] 945.6 - - Table 2: QSAT Data Downlink Overview OPERATIONS CONCEPT - QSAT MISSION PHASES ‘Low... 6 illustrates the breakdown of the QSAT lifetime in mission phases. The..., the ‘Nominal Phase’ of the QSAT mission will be subdivided into... orbit. The Figure 6: Overview of QSAT Mission Phases 3 first orbit of... mission plan. We assume that QSAT can collect its mission data... orbit. During the remaining orbits, QSAT is set to ‘Housekeeping Mode... lost. Data Up- & Downlink Table 3: QSAT Mission Cycle - Sequence of Activities... of the main tasks in QSAT´s mission phases. Phase transitions are... may arise. 4 Figure 8: Activities in QSAT lifetime phases ‘Science-Observation Mode...’ is the basic mode of QSAT, ‘Science-Observation Mode’ must be... mission data are downlinked by QSAT. During every ‘Mission Cycle’, there..., if necessary. Figure 9: Interactions of QSAT modes The ‘Initialisation Phase’ is... of spacecraft antennas  Activation of QSAT units At the end of... decide whether to continue the QSAT mission. Since the satellite has... the unit status report from QSAT telemetry. RISKS & CONTINGENCIES ‘Attitude Stabilisation...’:  De-tumbling and adjustment of QSAT (in ‘De-tumbling Mode’)  Boom... associated contingency procedures for the QSAT mission. Criteria to proceed to... charging is a potential risk for QSAT. A careful trade-off between budget... under development at present. Before QSAT is launched, simulations with MUSCAT... carried out for the specific QSAT orbit. an example, the yaw... anomalies may occur. Hence, all QSAT memory units are placed inside... insulated properly. In case of QSAT, those remnant magnetic fields could... the only attitude actuators of QSAT. It could make the required... distortion. Hence, the implementation of QSAT circuit insulation has to be... solar arrays, which applies for QSAT. While accounting for this fact... the initialisation sequence of the QSAT units after detachment from the... nominal length of 1.5 meters, the QSAT mission would be impaired. The..., the ground-station is down, QSAT would be able to survive... mode is the “Housekeeping Mode”, QSAT would perform only essential and... adequate ‘Mission Operations Plan’ for QSAT. This plan accounts for all... various welldefined modes in every QSAT mission phase, an efficient operations..., risks and contingencies for the QSAT project are considered in the... [1] [2] Tsuruda, Y., Hanada, T., van der Ha, J. C., ‘QSAT: A Low-Cost Design for 50kg...-259. Yamashita, D., ‘Power Analysis for QSAT’, Master Thesis, Space Systems Dynamics...



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... the linear algebraic definition of QSAT and propose a direct logical characterization... that this logical version of QSAT is not an extension of... problem (SAT). This shows that QSAT does not allow a direct comparison... QMA, for which SAT and QSAT are respectively complete. 1 Introduction Quantum...’s version of HSAT is called QSAT and, in order to make..., in [4] Bravyi et al. define QSAT in the following way: Input... idea underlining the formulation of QSAT is that, given a propositional sentence... density matrix ((Ik − |v v|) ⊗ In−k ) j in a QSAT problem corresponds to a classical evaluation... . Moreover, Bravyi showed in [3] that QSAT is QMAcomplete when the number... greater then 2. For this reason QSAT has drawn attention in the...-complete problem [6]. In [9], a variation of QSAT more closely related to PSAT... presented. In [8], stochastic versions of QSAT was explored. But no relationship... of SAT, PSAT and of QSAT was established. The present paper... show that the idea underlining QSAT , and which permits us to... is to show that, when QSAT is formalized in order to... the form that QSAT is defined. In Section 2, QSAT will be formulated... 3, it will be proved that QSAT in terms of quantum assignments... be viewed as a subcase of QSAT . Since quantum assignments are a very natural way of defined QSAT from SAT , the main result of this paper shows that QSAT is not a good problem to... be provided a logical version of QSAT . For this end, let X be... a Hilbert space [5]. The formulation of QSAT exhibited in the Introduction relies... to define a logical version of QSAT into C⊗n 2 in accordance with the... i with 1 ≤ i ≤ m. The quantum k-satisfatibility problem (k-QSAT l ) is the following question: Given... note that QSAT l is a restriction of the original problem QSAT shown in... explained above, the relationship between QSAT and SAT is established at... and intuitive level, but in QSAT l the reduced density matrices are.... In other words, QSAT l is a logical version of QSAT defined directly from... to evaluate the relationship between QSAT and SAT from a logical point..., looking at the relationship between QSAT l and SAT . Classical and quantum satisfiability 82 3 k-SAT and k-QSAT l In this section it will... that, although all problems in QSAT l are just quantum versions of... in QSAT l . Since QSAT l is a logical restriction of QSAT , this means that QSAT could... a logical perspective the relationship between QSAT and SAT is week. Indeed... 2.2, it seems reasonable to consider QSAT a good generalization of SAT only... a solution to an instance of a k-QSAT l problem, this section shows that... (k, n). To provide a positive solution ˆ φ ) = 1. If QSAT is a good to the k-SAT... be derived from Proposition 3.1 that k-QSAT is not an adequate generalization... logical relationship between SAT and QSAT was made explicit. It was... exhibited here pertaining SAT and QSAT also are applicable to the... the relationship between PSAT and QSAT. Therefore, the existing quantum versions... affirm that all versions of QSAT are inappropriate to compare NP.... Moreover, it is possible that QSAT itself could be used for...