Anh tuấn pham - Academia.edu (original) (raw)

Papers by Anh tuấn pham

Research paper thumbnail of Effect of surface topography on in vitro osteoblast function and mechanical performance of 3D printed titanium

Journal of Biomedical Materials Research Part A, 2021

Critical-sized defects remain a significant challenge in orthopaedics. 3D printed scaffolds are a... more Critical-sized defects remain a significant challenge in orthopaedics. 3D printed scaffolds are a promising treatment but are still limited due to inconsistent osseous integration. The goal of the study is to understand how changing the surface roughness of 3D printed titanium either by surface treatment or artificially printing rough topography impacts the mechanical and biological properties of 3D printed titanium. Titanium tensile samples and discs were printed via laser powder bed fusion. Roughness was manipulated by post-processing printed samples or by directly printing rough features. Experimental groups in order of increasing surface roughness were Polished, Blasted, As Built, Sprouts and Rough Sprouts. Tensile behavior of samples showed reduced strength with increasing surface roughness. MC3T3 pre-osteoblasts were seeded on discs and analyzed for cellular proliferation, differentiation, and matrix deposition at 0, 2, and 4 weeks. Printing roughness diminished mechanical properties such as tensile strength and ductility without clear benefit to cell growth. Roughness features were printed on mesoscale, unlike samples in literature in which roughness on microscale demonstrated an increase in cell activity. The data suggest that printing artificial roughness on titanium scaffold is not an effective strategy to promote osseous integration.

Research paper thumbnail of Transnational Student-Migrants and the Negotiation of Connectedness and Self-Identity in Australia: The Pains and Gains

International Student Connectedness and Identity, 2016

As globalisation deepens, student mobility through international education-migration nexus is bec... more As globalisation deepens, student mobility through international education-migration nexus is becoming a prominent feature of today’s global education landscape. Over the last decades, international students have become more visible in most universities, especially in developed countries such as Australia, New Zealand, Europe, North America and even some parts of the Asia-Pacific region. Yet, beneath these visibilities of international students, very few scholarly projects have looked into the desire for overseas education as part of an imagined mobility for transnational flows to adequately deal with the heterogeneity and complexities of education-migration interactions. Drawing on an ethnographic study of seven international student-migrants undertaking Australian Teacher Education, I investigate how students’ imagination for mobility can be a more useful way of understanding the reality of their sense of connectedness and self-identity. By using the work of imagined mobility as a lens for analysis (Soong, 2016), the chapter illustrates how the forms and workings of transnational connectedness are being shaped, rendering the transnational student-migrant a subject of ‘being in flux’ between the pains and gains.

Research paper thumbnail of Novel 2-D Wavelength Hopping/Time Spreading OCDM System using Heterodyne Detection Receiver and PPM Signaling

2006 First International Conference on Communications and Electronics, 2006

ABSTRACT

Research paper thumbnail of Performance enhancement of the 2-D wavelength-hopping/time-spreading synchronous OCDM system using a heterodyne detection receiver and PPM signaling

Journal of Optical Networking, 2007

Two-dimensional wavelength-hopping/time-spreading synchronous optical code-division multiplexing ... more Two-dimensional wavelength-hopping/time-spreading synchronous optical code-division multiplexing systems using a heterodyne detection receiver and pulse-position modulation (PPM) signaling are investigated. Prime sequences are used as signature code for both wavelength hopping and time spreading. Performance of the proposed systems is theoretically analyzed taking into account various kinds of noise and interference, including multiple access interference, optical beating interference, crosstalk, and receiver noise. We also compare the performance of the proposed systems with the conventional ones using ON-OFF keying signaling. Numerical results show the improvement in both number of users and optical power gain with a proper selection of PPM word length M.

Research paper thumbnail of Spectral-amplitude-encoding optical-code-division-multiplexing system with a heterodyne detection receiver for broadband optical multiple-access networks

Journal of Optical Networking, 2005

We propose a spectral-amplitude-encoding optical-code-division-multiplexing (SAE/OCDM) system wit... more We propose a spectral-amplitude-encoding optical-code-division-multiplexing (SAE/OCDM) system with a heterodyne detection receiver for broadband optical multiple-access networks (OMANs). The performance of the proposed system is theoretically analyzed, taking into account various types of noise and interference, including multiple-access interference (MAI), cross talk, optical beating interference (OBI), and receiver noise. Analytical results show that the proposed system offers significant improvement in terms of receiver sensitivity and system capacity (number of users) compared with conventional direct-detection systems. We also discuss conditions necessary for a heterodyne detection receiver to work properly in a SAE/OCDM system. In addition, the system performance is analyzed with several signature code sets including m-sequence, Hadamard, and modified quadratic congruence (MQC) code sets. It is found that signature code sets with higher weight, such as m-sequence and Hadamard code sets, are preferred in a SAE/OCDM system with a heterodyne detection receiver.

Research paper thumbnail of Threshold-based vs. demodulator-based code acquisition for PPM/OPPM FO-CDMA systems

Proceedings of 2004 International Symposium on Intelligent Signal Processing and Communication Systems, 2004. ISPACS 2004.

This paper proposes and theoretically evaluates two different schemes of code acquisition for pui... more This paper proposes and theoretically evaluates two different schemes of code acquisition for puise-position modulation (PPM), overlapping PPM (OPPM) fiber-optic code division multiple-access (FO-CDMA) systems, namely threshold based and demodulator-based code acquisition. The serial-search algorithm is employed for both schemes. Theoretical analysis is carried out with help of Markov chain model. Discussions upon effects of various parameter settings on th I' performance of code acquisition for PPMfOPPM FO-CDMA systems, such as index of overlap, PPMlOPPM multiplicity factor, average photon counts per information nat, and darkcurrents, are presented.

Research paper thumbnail of Performance Analysis of 2-D OCDM Systems using Heterodyne Detection Receiver and OPPM Signaling

LEOS 2007 - IEEE Lasers and Electro-Optics Society Annual Meeting Conference Proceedings, 2007

ABSTRACT

Research paper thumbnail of Performance analysis of SD/SS code acquisition for FO-CDMA systems using PPM signaling and optical orthogonal code

The Ninth International Conference onCommunications Systems, 2004. ICCS 2004.

This paper proposes and theoretically analyzes the performance of single-dwell serial-search (SD/... more This paper proposes and theoretically analyzes the performance of single-dwell serial-search (SD/SS) code acquisition for fiber-optic code-division multiple-access (CDMA) systems using pulse-position modulation (PPM) signaling and optical orthogonal code (OOC). To analyze the proposed code acquisition system, mean acquisition time is derived taking into account multiple-access interference (MAI) and receivers shot-noise. Discussion upon effect of various system parameters to the performance of proposed system is also presented

Research paper thumbnail of OPNp1-1: Performance Analysis of 2-D WH/TS OCDM Systems Using Prime Sequences and a Heterodyne Detection Receiver

IEEE Globecom 2006, 2006

This paper proposes a novel two-dimensional wavelength hopping/time spreading (WH/TS) optical cod... more This paper proposes a novel two-dimensional wavelength hopping/time spreading (WH/TS) optical code division multiplexing (2-D WH/TS OCDM) system using prime sequences and a heterodyne detection receiver for broadband optical multiple access networks (OMAN). The performance of the proposed system is theoretically analyzed taking into account various kinds of noise and interference, including multiple access interference (MAI), optical beating interference (OBI), crosstalk and receiver noise. The prime sequences are used as the signature codes for both wavelength hopping and time spreading. Both symmetric and over-colored asymmetric systems are considered. Analytical results show that the proposed system offers much better performance compared with that of a conventional 2-D WH/TS system using direct-detection. As a matter of fact, the OBI is well suppressed in the proposed system resulting in a considerable increase in the number of supportable users. Moreover, the system's sensitivity is significantly improved enabling the proposed system to be a promising candidate for the broadband OMAN deployed using the passive optical network (PON) configuration.

Research paper thumbnail of All-optical modulation and switching using a nonlinear-optical directional coupler

Journal of the Optical Society of America B, 1991

We present the operational principles and analytical characteristics of several all-optical modul... more We present the operational principles and analytical characteristics of several all-optical modulators and switches that incorporate nonlinear directional couplers with either single or double biasing beams. Graphic representation and potential-well models are used effectively to describe the device's operation and enhance the ability to anticipate its performance. Phase-to-amplitude modulation is considered, which leads to the special case of phase-controlled switching. Amplitude-to-amplitude modulation is studied, which leads to optical amplification phenomena. An intensity-sensitive switch is also examined.

Research paper thumbnail of B-8-29 Performance Analysis of Optical Atmospheric Turbo-Coded CDMA Systems with PPM Signaling

Research paper thumbnail of Performance Degradation of Spectral Amplitude Encoding Optical Code Division Multiple Access Systems due to Group Velocity Dispersion

IEICE Proceeding Series

... Ngoc T. Dang and Anh T. Pham Graduate Department of Computer and Information Systems The ... ... more ... Ngoc T. Dang and Anh T. Pham Graduate Department of Computer and Information Systems The ... of distortion and broadening of data signal increase with transmission length (L). This is due to ... In order to calculate MAI currents, we first consider the average number of interfering ...

Research paper thumbnail of Grippe aviaire dans la filière. La réaction du secteur agroindustriel au Vietnam

Dans cet article, nous analysons dans quelle mesure la crise de la grippe aviaire survenue au Vie... more Dans cet article, nous analysons dans quelle mesure la crise de la grippe aviaire survenue au Vietnam fin 2003 a affecte l'organisation de la filiere avicole locale, et notamment la place des groupes agro-industriels dans cette filiere. Sur la base d'enquetes aupres de professionnels de la filiere et de responsables politiques et d'une analyse de la presse economique, nous montrons que la crise s'est traduite par une alliance entre les pouvoirs publics vietnamiens et le secteur industriel, au detriment du secteur traditionnel, juge peu apte a repondre aux imperatifs de " biosecurite ". Le secteur prive s'est montre extremement actif pour relancer une filiere devastee et ceci malgre un contexte epidemiologique encore tres incertain. Les groupes agro-industriels qui pouvaient encore produire ou importer des poussins de l'exterieur ont vite reinvesti la filiere, prenant le controle d'un nombre croissant d'activites, par un processus de vertical...

Research paper thumbnail of Segmental polarity in Drosophila melanogaster: genetic dissection of fused in a Suppressor of fused background reveals interaction with costal-2

Genetics, 1993

fused (fu) is a segment polarity gene that encodes a putative serine/threonine kinase. A complete... more fused (fu) is a segment polarity gene that encodes a putative serine/threonine kinase. A complete suppressor of the embryonic and adult phenotypes of fu mutants, Suppressor of fused (Su(fu)), was previously described. The amorphic Su(fu) mutation is viable and displays no phenotype by itself. We have used this suppressor as a tool to perform a genetic dissection of the fu gene. Analysis of the interaction between Su(fu) and 33 fu alleles shows that they belong to three different classes. Defects due to class I fu alleles are fully suppressed by Su(fu). Class II fu alleles lead to a new segment polarity phenotype in interaction with Su(fu). This phenotype corresponds to embryonic and adult anomalies similar to those displayed by the segment polarity mutant costal-2 (cos-2). Class II alleles are recessive to class I alleles in a fu[I]/fu[II];Su(fu)/Su(fu) combination. Class 0 alleles, like class I alleles, confer a normal segmentation phenotype in interaction with Su(fu). However clas...

Research paper thumbnail of The Study of Electrodeposition of Si in Tmhatfsi-SiCl4 analyzed by EQCM Method

ECS Meeting Abstracts, 2014

An inexpensive fabrication method of Si is required for achieving Ultra-Large-Scale Si solar powe... more An inexpensive fabrication method of Si is required for achieving Ultra-Large-Scale Si solar power generation. Electrodeposition method has attracted recently because it has numbers of advantages such as simplicity of process and precision control of reaction etc. compared with conventional methods such as CVD, sputtering and e-beam evaporation. Si electrodeposition has been conducted using nonaqueous solvents (molten solt1), organic solvent2) and ionic liquid3)) because the reduction potential of SiO2 is very negative. However, the organic solvents have a drawback due to safety concerns, with high flammability. On the other hand, ionic liquids (sometimes referred as room temperature molten salts) exhibit low volatility and in many cases are nonflammable. The primary benefit of both systems is the large electrochemical window, allowing for study of elements such as Si and Li. We have reported the electrodeposition of Si from an ionic liquid.4) However, high purity Si electrodepositi...

Research paper thumbnail of Applying statistical analysis for assessing the reliability of input data to improve the quality of short-term load forecasting for a Ho Chi Minh City distribution network

Science & Technology Development Journal - Engineering and Technology, 2020

Short-term load forecasting has an extremely important role in the design, operation and planning... more Short-term load forecasting has an extremely important role in the design, operation and planning of power system, especially on a power grid of Ho Chi Minh City (HCMC) - an active city has the highest power demand in Vietnam. Through the data survey, the load power in the HCMC area changes suddenly so that it causes disturbances in the load data. Accordingly, the reliability assessment of the load data will be essential in the processing stage of data-filtering before implementing load forecasting models. This study introduces a novel statistical data-filtering method that takes into account the reliability of the input-data source by analyzing many different confidence levels. Results of the proposed data-filtering method will be compared to previous data -iltering methods (such as Kalman, DBSCAN, Wavelet Transform and SSA filtering methods). The data source used in this study was collected from more than 50 substations uisng the SCADA system in Ho Chi Minh City's distribution...

Research paper thumbnail of Verifying MPI Applications with SimGridMC

Proceedings of the First International Workshop on Software Correctness for HPC Applications, 2017

SimGridMC (also dubbed Mc SimGrid) is a stateful Model Checker for MPI applications. It is integr... more SimGridMC (also dubbed Mc SimGrid) is a stateful Model Checker for MPI applications. It is integrated to SimGrid, a framework mostly dedicated to predicting the performance of distributed applications. We describe the architecture of McSimGrid, and show how it copes with the state space explosion problem using Dynamic Partial Order Reduction and State Equality algorithms. As case studies we show how SimGrid can enforce safety and liveness properties for MPI applications, as well as global invariants over communication patterns. CCS CONCEPTS • Software and its engineering → Model checking; Software verication; Dynamic analysis; Formal software verication; Ultra-large-scale systems; • Theory of computation → Parallel algorithms;

Research paper thumbnail of Characterization of new anti-IL-6 antibodies revealed high potency candidates for intracellular cytokine detection and specific targeting of IL-6 receptor binding sites

European cytokine network, Jun 1, 2018

Interleukin-6 (IL-6) expression and secretion, induced by inflammatory processes, stimulate the a... more Interleukin-6 (IL-6) expression and secretion, induced by inflammatory processes, stimulate the acute phase response cascade. The overexpression of IL-6 contributes to a variety of inflammatory diseases, e.g. rheumatoid arthritis, Castleman's disease, multiple myeloma, and prostate cancer. Screening for high amounts of IL-6 in the patients' blood serum can be crucial for an adequate treatment. In this study, five novel murine monoclonal antibodies (mAbs) reactive to human IL-6 were generated. The mAbs were characterized for potential diagnostic purposes and recombinant antibodies were derived thereof. Initial epitope mapping using a combination of blocking experiments and Hyper-IL-6, a fusion protein consisting of IL-6 and the soluble IL-6 receptor revealed distinct but overlapping binding sites. At least one of the mAbs was found to interact with the region of IL-6/ IL-R complex formation. Three mAbs were applied successfully in intracellular staining by flow cytometry, whe...

Research paper thumbnail of Đánh giá tác động đối với đa dạng sinh học của tuyến đường Hồ Chí Minh đoạn qua khu bảo tồn thiên nhiên Ngọc Linh và đề xuất các giải pháp giảm thiểu các tác động tiêu cực lên khu bảo tồn

Research paper thumbnail of Efficient People-Searching Robot

Lecture Notes in Computer Science, 2016

This paper describes a robot that performs person search in an office environment. The system bri... more This paper describes a robot that performs person search in an office environment. The system brings together a number of technologies to ensure efficient and robust search in the face of varying conditions. These include face detection, face recognition, speech recognition, localization, path planning and re-planning in the presence of dynamic obstacles, and a decision theoretic search strategy. The main novel contribution of the system is an ensemble method for combining the outputs of multiple classifiers for face recognition. A second contribution is the use of a strong priority over the location of individuals in the database to guide search. The system is also able to use speech generation and recognition to interact with individuals to achieve its goals, as well as to receive goals via a mobile interface.

Research paper thumbnail of Effect of surface topography on in vitro osteoblast function and mechanical performance of 3D printed titanium

Journal of Biomedical Materials Research Part A, 2021

Critical-sized defects remain a significant challenge in orthopaedics. 3D printed scaffolds are a... more Critical-sized defects remain a significant challenge in orthopaedics. 3D printed scaffolds are a promising treatment but are still limited due to inconsistent osseous integration. The goal of the study is to understand how changing the surface roughness of 3D printed titanium either by surface treatment or artificially printing rough topography impacts the mechanical and biological properties of 3D printed titanium. Titanium tensile samples and discs were printed via laser powder bed fusion. Roughness was manipulated by post-processing printed samples or by directly printing rough features. Experimental groups in order of increasing surface roughness were Polished, Blasted, As Built, Sprouts and Rough Sprouts. Tensile behavior of samples showed reduced strength with increasing surface roughness. MC3T3 pre-osteoblasts were seeded on discs and analyzed for cellular proliferation, differentiation, and matrix deposition at 0, 2, and 4 weeks. Printing roughness diminished mechanical properties such as tensile strength and ductility without clear benefit to cell growth. Roughness features were printed on mesoscale, unlike samples in literature in which roughness on microscale demonstrated an increase in cell activity. The data suggest that printing artificial roughness on titanium scaffold is not an effective strategy to promote osseous integration.

Research paper thumbnail of Transnational Student-Migrants and the Negotiation of Connectedness and Self-Identity in Australia: The Pains and Gains

International Student Connectedness and Identity, 2016

As globalisation deepens, student mobility through international education-migration nexus is bec... more As globalisation deepens, student mobility through international education-migration nexus is becoming a prominent feature of today’s global education landscape. Over the last decades, international students have become more visible in most universities, especially in developed countries such as Australia, New Zealand, Europe, North America and even some parts of the Asia-Pacific region. Yet, beneath these visibilities of international students, very few scholarly projects have looked into the desire for overseas education as part of an imagined mobility for transnational flows to adequately deal with the heterogeneity and complexities of education-migration interactions. Drawing on an ethnographic study of seven international student-migrants undertaking Australian Teacher Education, I investigate how students’ imagination for mobility can be a more useful way of understanding the reality of their sense of connectedness and self-identity. By using the work of imagined mobility as a lens for analysis (Soong, 2016), the chapter illustrates how the forms and workings of transnational connectedness are being shaped, rendering the transnational student-migrant a subject of ‘being in flux’ between the pains and gains.

Research paper thumbnail of Novel 2-D Wavelength Hopping/Time Spreading OCDM System using Heterodyne Detection Receiver and PPM Signaling

2006 First International Conference on Communications and Electronics, 2006

ABSTRACT

Research paper thumbnail of Performance enhancement of the 2-D wavelength-hopping/time-spreading synchronous OCDM system using a heterodyne detection receiver and PPM signaling

Journal of Optical Networking, 2007

Two-dimensional wavelength-hopping/time-spreading synchronous optical code-division multiplexing ... more Two-dimensional wavelength-hopping/time-spreading synchronous optical code-division multiplexing systems using a heterodyne detection receiver and pulse-position modulation (PPM) signaling are investigated. Prime sequences are used as signature code for both wavelength hopping and time spreading. Performance of the proposed systems is theoretically analyzed taking into account various kinds of noise and interference, including multiple access interference, optical beating interference, crosstalk, and receiver noise. We also compare the performance of the proposed systems with the conventional ones using ON-OFF keying signaling. Numerical results show the improvement in both number of users and optical power gain with a proper selection of PPM word length M.

Research paper thumbnail of Spectral-amplitude-encoding optical-code-division-multiplexing system with a heterodyne detection receiver for broadband optical multiple-access networks

Journal of Optical Networking, 2005

We propose a spectral-amplitude-encoding optical-code-division-multiplexing (SAE/OCDM) system wit... more We propose a spectral-amplitude-encoding optical-code-division-multiplexing (SAE/OCDM) system with a heterodyne detection receiver for broadband optical multiple-access networks (OMANs). The performance of the proposed system is theoretically analyzed, taking into account various types of noise and interference, including multiple-access interference (MAI), cross talk, optical beating interference (OBI), and receiver noise. Analytical results show that the proposed system offers significant improvement in terms of receiver sensitivity and system capacity (number of users) compared with conventional direct-detection systems. We also discuss conditions necessary for a heterodyne detection receiver to work properly in a SAE/OCDM system. In addition, the system performance is analyzed with several signature code sets including m-sequence, Hadamard, and modified quadratic congruence (MQC) code sets. It is found that signature code sets with higher weight, such as m-sequence and Hadamard code sets, are preferred in a SAE/OCDM system with a heterodyne detection receiver.

Research paper thumbnail of Threshold-based vs. demodulator-based code acquisition for PPM/OPPM FO-CDMA systems

Proceedings of 2004 International Symposium on Intelligent Signal Processing and Communication Systems, 2004. ISPACS 2004.

This paper proposes and theoretically evaluates two different schemes of code acquisition for pui... more This paper proposes and theoretically evaluates two different schemes of code acquisition for puise-position modulation (PPM), overlapping PPM (OPPM) fiber-optic code division multiple-access (FO-CDMA) systems, namely threshold based and demodulator-based code acquisition. The serial-search algorithm is employed for both schemes. Theoretical analysis is carried out with help of Markov chain model. Discussions upon effects of various parameter settings on th I' performance of code acquisition for PPMfOPPM FO-CDMA systems, such as index of overlap, PPMlOPPM multiplicity factor, average photon counts per information nat, and darkcurrents, are presented.

Research paper thumbnail of Performance Analysis of 2-D OCDM Systems using Heterodyne Detection Receiver and OPPM Signaling

LEOS 2007 - IEEE Lasers and Electro-Optics Society Annual Meeting Conference Proceedings, 2007

ABSTRACT

Research paper thumbnail of Performance analysis of SD/SS code acquisition for FO-CDMA systems using PPM signaling and optical orthogonal code

The Ninth International Conference onCommunications Systems, 2004. ICCS 2004.

This paper proposes and theoretically analyzes the performance of single-dwell serial-search (SD/... more This paper proposes and theoretically analyzes the performance of single-dwell serial-search (SD/SS) code acquisition for fiber-optic code-division multiple-access (CDMA) systems using pulse-position modulation (PPM) signaling and optical orthogonal code (OOC). To analyze the proposed code acquisition system, mean acquisition time is derived taking into account multiple-access interference (MAI) and receivers shot-noise. Discussion upon effect of various system parameters to the performance of proposed system is also presented

Research paper thumbnail of OPNp1-1: Performance Analysis of 2-D WH/TS OCDM Systems Using Prime Sequences and a Heterodyne Detection Receiver

IEEE Globecom 2006, 2006

This paper proposes a novel two-dimensional wavelength hopping/time spreading (WH/TS) optical cod... more This paper proposes a novel two-dimensional wavelength hopping/time spreading (WH/TS) optical code division multiplexing (2-D WH/TS OCDM) system using prime sequences and a heterodyne detection receiver for broadband optical multiple access networks (OMAN). The performance of the proposed system is theoretically analyzed taking into account various kinds of noise and interference, including multiple access interference (MAI), optical beating interference (OBI), crosstalk and receiver noise. The prime sequences are used as the signature codes for both wavelength hopping and time spreading. Both symmetric and over-colored asymmetric systems are considered. Analytical results show that the proposed system offers much better performance compared with that of a conventional 2-D WH/TS system using direct-detection. As a matter of fact, the OBI is well suppressed in the proposed system resulting in a considerable increase in the number of supportable users. Moreover, the system's sensitivity is significantly improved enabling the proposed system to be a promising candidate for the broadband OMAN deployed using the passive optical network (PON) configuration.

Research paper thumbnail of All-optical modulation and switching using a nonlinear-optical directional coupler

Journal of the Optical Society of America B, 1991

We present the operational principles and analytical characteristics of several all-optical modul... more We present the operational principles and analytical characteristics of several all-optical modulators and switches that incorporate nonlinear directional couplers with either single or double biasing beams. Graphic representation and potential-well models are used effectively to describe the device's operation and enhance the ability to anticipate its performance. Phase-to-amplitude modulation is considered, which leads to the special case of phase-controlled switching. Amplitude-to-amplitude modulation is studied, which leads to optical amplification phenomena. An intensity-sensitive switch is also examined.

Research paper thumbnail of B-8-29 Performance Analysis of Optical Atmospheric Turbo-Coded CDMA Systems with PPM Signaling

Research paper thumbnail of Performance Degradation of Spectral Amplitude Encoding Optical Code Division Multiple Access Systems due to Group Velocity Dispersion

IEICE Proceeding Series

... Ngoc T. Dang and Anh T. Pham Graduate Department of Computer and Information Systems The ... ... more ... Ngoc T. Dang and Anh T. Pham Graduate Department of Computer and Information Systems The ... of distortion and broadening of data signal increase with transmission length (L). This is due to ... In order to calculate MAI currents, we first consider the average number of interfering ...

Research paper thumbnail of Grippe aviaire dans la filière. La réaction du secteur agroindustriel au Vietnam

Dans cet article, nous analysons dans quelle mesure la crise de la grippe aviaire survenue au Vie... more Dans cet article, nous analysons dans quelle mesure la crise de la grippe aviaire survenue au Vietnam fin 2003 a affecte l'organisation de la filiere avicole locale, et notamment la place des groupes agro-industriels dans cette filiere. Sur la base d'enquetes aupres de professionnels de la filiere et de responsables politiques et d'une analyse de la presse economique, nous montrons que la crise s'est traduite par une alliance entre les pouvoirs publics vietnamiens et le secteur industriel, au detriment du secteur traditionnel, juge peu apte a repondre aux imperatifs de " biosecurite ". Le secteur prive s'est montre extremement actif pour relancer une filiere devastee et ceci malgre un contexte epidemiologique encore tres incertain. Les groupes agro-industriels qui pouvaient encore produire ou importer des poussins de l'exterieur ont vite reinvesti la filiere, prenant le controle d'un nombre croissant d'activites, par un processus de vertical...

Research paper thumbnail of Segmental polarity in Drosophila melanogaster: genetic dissection of fused in a Suppressor of fused background reveals interaction with costal-2

Genetics, 1993

fused (fu) is a segment polarity gene that encodes a putative serine/threonine kinase. A complete... more fused (fu) is a segment polarity gene that encodes a putative serine/threonine kinase. A complete suppressor of the embryonic and adult phenotypes of fu mutants, Suppressor of fused (Su(fu)), was previously described. The amorphic Su(fu) mutation is viable and displays no phenotype by itself. We have used this suppressor as a tool to perform a genetic dissection of the fu gene. Analysis of the interaction between Su(fu) and 33 fu alleles shows that they belong to three different classes. Defects due to class I fu alleles are fully suppressed by Su(fu). Class II fu alleles lead to a new segment polarity phenotype in interaction with Su(fu). This phenotype corresponds to embryonic and adult anomalies similar to those displayed by the segment polarity mutant costal-2 (cos-2). Class II alleles are recessive to class I alleles in a fu[I]/fu[II];Su(fu)/Su(fu) combination. Class 0 alleles, like class I alleles, confer a normal segmentation phenotype in interaction with Su(fu). However clas...

Research paper thumbnail of The Study of Electrodeposition of Si in Tmhatfsi-SiCl4 analyzed by EQCM Method

ECS Meeting Abstracts, 2014

An inexpensive fabrication method of Si is required for achieving Ultra-Large-Scale Si solar powe... more An inexpensive fabrication method of Si is required for achieving Ultra-Large-Scale Si solar power generation. Electrodeposition method has attracted recently because it has numbers of advantages such as simplicity of process and precision control of reaction etc. compared with conventional methods such as CVD, sputtering and e-beam evaporation. Si electrodeposition has been conducted using nonaqueous solvents (molten solt1), organic solvent2) and ionic liquid3)) because the reduction potential of SiO2 is very negative. However, the organic solvents have a drawback due to safety concerns, with high flammability. On the other hand, ionic liquids (sometimes referred as room temperature molten salts) exhibit low volatility and in many cases are nonflammable. The primary benefit of both systems is the large electrochemical window, allowing for study of elements such as Si and Li. We have reported the electrodeposition of Si from an ionic liquid.4) However, high purity Si electrodepositi...

Research paper thumbnail of Applying statistical analysis for assessing the reliability of input data to improve the quality of short-term load forecasting for a Ho Chi Minh City distribution network

Science & Technology Development Journal - Engineering and Technology, 2020

Short-term load forecasting has an extremely important role in the design, operation and planning... more Short-term load forecasting has an extremely important role in the design, operation and planning of power system, especially on a power grid of Ho Chi Minh City (HCMC) - an active city has the highest power demand in Vietnam. Through the data survey, the load power in the HCMC area changes suddenly so that it causes disturbances in the load data. Accordingly, the reliability assessment of the load data will be essential in the processing stage of data-filtering before implementing load forecasting models. This study introduces a novel statistical data-filtering method that takes into account the reliability of the input-data source by analyzing many different confidence levels. Results of the proposed data-filtering method will be compared to previous data -iltering methods (such as Kalman, DBSCAN, Wavelet Transform and SSA filtering methods). The data source used in this study was collected from more than 50 substations uisng the SCADA system in Ho Chi Minh City's distribution...

Research paper thumbnail of Verifying MPI Applications with SimGridMC

Proceedings of the First International Workshop on Software Correctness for HPC Applications, 2017

SimGridMC (also dubbed Mc SimGrid) is a stateful Model Checker for MPI applications. It is integr... more SimGridMC (also dubbed Mc SimGrid) is a stateful Model Checker for MPI applications. It is integrated to SimGrid, a framework mostly dedicated to predicting the performance of distributed applications. We describe the architecture of McSimGrid, and show how it copes with the state space explosion problem using Dynamic Partial Order Reduction and State Equality algorithms. As case studies we show how SimGrid can enforce safety and liveness properties for MPI applications, as well as global invariants over communication patterns. CCS CONCEPTS • Software and its engineering → Model checking; Software verication; Dynamic analysis; Formal software verication; Ultra-large-scale systems; • Theory of computation → Parallel algorithms;

Research paper thumbnail of Characterization of new anti-IL-6 antibodies revealed high potency candidates for intracellular cytokine detection and specific targeting of IL-6 receptor binding sites

European cytokine network, Jun 1, 2018

Interleukin-6 (IL-6) expression and secretion, induced by inflammatory processes, stimulate the a... more Interleukin-6 (IL-6) expression and secretion, induced by inflammatory processes, stimulate the acute phase response cascade. The overexpression of IL-6 contributes to a variety of inflammatory diseases, e.g. rheumatoid arthritis, Castleman's disease, multiple myeloma, and prostate cancer. Screening for high amounts of IL-6 in the patients' blood serum can be crucial for an adequate treatment. In this study, five novel murine monoclonal antibodies (mAbs) reactive to human IL-6 were generated. The mAbs were characterized for potential diagnostic purposes and recombinant antibodies were derived thereof. Initial epitope mapping using a combination of blocking experiments and Hyper-IL-6, a fusion protein consisting of IL-6 and the soluble IL-6 receptor revealed distinct but overlapping binding sites. At least one of the mAbs was found to interact with the region of IL-6/ IL-R complex formation. Three mAbs were applied successfully in intracellular staining by flow cytometry, whe...

Research paper thumbnail of Đánh giá tác động đối với đa dạng sinh học của tuyến đường Hồ Chí Minh đoạn qua khu bảo tồn thiên nhiên Ngọc Linh và đề xuất các giải pháp giảm thiểu các tác động tiêu cực lên khu bảo tồn

Research paper thumbnail of Efficient People-Searching Robot

Lecture Notes in Computer Science, 2016

This paper describes a robot that performs person search in an office environment. The system bri... more This paper describes a robot that performs person search in an office environment. The system brings together a number of technologies to ensure efficient and robust search in the face of varying conditions. These include face detection, face recognition, speech recognition, localization, path planning and re-planning in the presence of dynamic obstacles, and a decision theoretic search strategy. The main novel contribution of the system is an ensemble method for combining the outputs of multiple classifiers for face recognition. A second contribution is the use of a strong priority over the location of individuals in the database to guide search. The system is also able to use speech generation and recognition to interact with individuals to achieve its goals, as well as to receive goals via a mobile interface.