103,981 research outputs found
Guo ti zhuan xiao zhao sheng jian zhang
No full text[中央國體專校第四屆招生委員會]."藏者: 黃漢勛"--包裝封面.題名據卷端.[Zhong yang guo ti zhuan xiao di si jie zhao sheng wei yuan hui]."Zang zhe: Huang Hanxun"--Bao zhuang feng mian.Ti ming ju juan duan
Guo li zhong yang da xue jiao yu xue yuan xin li xue xi gai kuang.
No full textCover title.; Special collection from London Missionary Society.; Also available in an electronic version via the Internet at http://nla.gov.au/nla.gen-vn1973394
3-D simulation of gases transport under condition of inert gas injection into goaf
No full textTo prevent coal spontaneous combustion in mines, it is paramount to understand O2 gas distribution under condition of inert gas injection into goaf. In this study, the goaf was modeled as a 3-D porous medium based on stress distribution. The variation of O2 distribution influenced by CO2 or N2 injection was simulated based on the multi-component gases transport and the Navier-Stokes equations using Fluent. The numerical results without inert gas injection were compared with field measurements to validate the simulation model. Simulations with inert gas injection show that CO2 gas mainly accumulates at the goaf floor level; however, a notable portion of N2 gas moves upward. The evolution of the spontaneous combustion risky zone with continuous inert gas injection can be classified into three phases: slow inerting phase, rapid accelerating inerting phase, and stable inerting phase. The asphyxia zone with CO2 injection is about 1.25~2.4 times larger than that with N2 injection. The efficacy of preventing and putting out mine fires is strongly related with the inert gas injecting position. Ideal injections are located in the oxidation zone or the transitional zone between oxidation zone and heat dissipation zone.Peer reviewed
Applicability of Phase-Function Normalization Techniques for Radiation Transfer Computation
No full textThe applicability of recently-developed four phase-function (PF) normalization techniques for modeling radiation transfer in strongly anisotropic scattering media is intensively examined using the discrete-ordinate method. The three simple techniques via normalization of only the forward- and/or backward-scattering directions were shown to reduce normalization complexity whilst retaining diffuse radiation computation accuracy for Henyey-Greenstein (HG) PFs. For Legendre PFs, however, such simple techniques are found to result in unphysical negative PF value at one or few correction direction in some cases. Additionally, negative PF values can occur for these simple techniques for ballistic radiation transfer for both HG and Legendre PF types. If negative-intensity correction is applied, however, radiative heat transfer calculation can still converge regardless of the appearance of negative PF values. The relatively complex Hunter and Guo 2012 technique, in which normalization is realized through a correction matrix covering all discrete directions, is shown to be applicable for diffuse and ballistic radiation for both PF types.Peer reviewed
Improved thermal properties of paraffin wax by the addition of TiO<sub>2</sub> nanoparticles
No full textTiO2 nanoparticles about 20 nm in diameter in the form of anatase were prepared and characterized. The nanoparticles were successfully dispersed into a paraffin wax (PW) matrix without any surfactant. The differential scanning calorimetric instrument and the transient short hot-wire method were used to measure the thermal properties of the TiO2/PW composites. It is found that the phase-change temperature and latent heat capacity vary with TiO2 nanoparticles loading levels. When the loading is not over 1 wt%, the phase-change temperature drops, and the latent heat capacity increases. When the loading is over 2 wt%, the phase-change temperature increases, and the latent heat capacity drops. A significant increase in latent heat capacity is found around 0.7 wt% loading. The thermal conductivity of the composites increases monotonically with increasing TiO2 loading. But such a tendency tends to decrease when the loading is over 3 wt%.Peer reviewed
Soft Decoding Assisted Interference Cancellation in a Non-Binary LDPC Coded Fast Frequency Hopping Multiuser System Using Product Combining
No full textIn this contribution, soft-input-soft-output (SISO) decoding aided successive interference cancellation (SIC) is considered in fast frequency hopping (FFH), M-ary frequency shift keying (MFSK) using product combining (PC), when operating in multiple access (MA) Nakagami-m channels. All users’ Mary source symbols are encoded using non-binary LDPC codes and the encoded symbols are transmitted using FFH-MFSK modulation. A sub-optimum soft metric is proposed which is based on self-normalization of the diversity combiner outputs. In the context of the proposed SIC scheme, the receiver exploits the soft information fed back by the LDPC decoder to the demodulator in order to cancel the interference imposed by the reliably detected symbols. Our simulation results show that the proposed scheme is capable of combatting the effects of multiuser interference and outperforms conventional iterative decoding by about 1dB
Combinatorial interpretations of two identities of Guo and Yang
No full textThe restricted partitions in which the largest part is less than or equal to and the number of parts is less than or equal to were investigated by Andrews. These partitions were extended recently by the author to partitions into parts of two kinds. In this paper, we use a new class of restricted partitions into parts of two kinds to provide new combinatorial interpretations for two identities of Guo and Yang
Anak Guo
No full textDengan latar belakang keberagaman yang dimiliki
memacu semangat “Anak Guo” untuk menjelajahi dan
mengeksplorasi desa tempat tinggal mereka. Mulai
dari objek wisata maupun kebiasaan-kebiasaan yang
mereka jalani dalam indahnya ikatan persahabatan.
Persahabatann lima “Anak Guo” yang terjalin bukan
hanya di sekolah melainkan juga dalam keseharian mereka.
Setiap harinya selalu muncul ide-ide baru. Bukan hanya
sekedar menikmati keindahan alam semesta, tetapi
bagaimana mereka menjaga dan melestarikan setiap
hal yang ada di desa mereka yakni Desa Jorong Guo,
Kabupaten Pasaman Baarat, Provinsi Sumatra Barat.
Buku ini menggambarkan keberagaman Indonesia yang
sangat kaya, mulai dari objek wisata maupun kebiasaan-
kebiasaan masyarakat Desa Jorong Guo.
Ayo cari tahu bagaimana keseruan dalam keseharian
kelima “Anak Guo” pada buku ini
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