Pub Date : 2014-11-01DOI: 10.1109/HNICEM.2014.7016227
O. J. Gerasta, Harrez Villaruz, Dominic O. Cagadas
An 18-bit decimator design for sigma-delta analog to digital converter with variable oversampling rate for audio application was successfully implemented in TSMC 0.13 um Logic CMOS Technology. Behavioral model of this project is implemented using MATLAB and actual implementation using RTL Code with the aid of Verilog Compiler Simulator. The oversampling rates used in this decimator design are 32, 64, 128 and 256. Also, this decimator uses 1 sinc filter and 2 halfband filters as the main blocks for the whole system. The result of the design actually minimized the delay of the signal as compared to the behavioral simulation obtained. The total cell area is reduced reaching the desirable signal-to-noise ratio.
基于台积电0.13 um CMOS技术，成功实现了一种用于音频应用的可变过采样率σ - δ模数转换器的18位抽取器设计。本课题的行为模型采用MATLAB实现，实际实现采用RTL Code，并借助于Verilog Compiler Simulator。该十进制数设计中使用的过采样率为32、64、128和256。此外，该抽取器使用1个sinc滤波器和2个半带滤波器作为整个系统的主要模块。与行为模拟结果相比，设计的结果实际上使信号的延迟最小化。总单元面积减少，达到理想的信噪比。
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Pub Date : 2014-11-01DOI: 10.1109/HNICEM.2014.7016239
A. Africa
In the business of selling mobile phones the number of units in the inventory and the specification of the components of the mobile phone play an important role in the success of the business. Ideally, it is good for the mobile phone shops to display different models in their stores and have stocks of these models in order to attract customers. However, the problem in that concept is stocking inventory will cost a lot of money. Mobile phone stores often have limited resources so it is ideal to balance the quantity and specification of their units. Given the budget constraint, the specifications of the parts of the mobile phones that will be purchased have to be optimized. The owners of mobile phone stores often do it manually and without scientific basis which lead to inefficiency. This research shows a scientific approach in minimizing the average annual cost of ordering and storing mobile phone sets. This is done by using Particle Swarm Optimization in purchasing the number of units and the specifications of their components.
{"title":"A mobile phone store simulation model using Particle Swarm Optimization","authors":"A. Africa","doi":"10.1109/HNICEM.2014.7016239","DOIUrl":"https://doi.org/10.1109/HNICEM.2014.7016239","url":null,"abstract":"In the business of selling mobile phones the number of units in the inventory and the specification of the components of the mobile phone play an important role in the success of the business. Ideally, it is good for the mobile phone shops to display different models in their stores and have stocks of these models in order to attract customers. However, the problem in that concept is stocking inventory will cost a lot of money. Mobile phone stores often have limited resources so it is ideal to balance the quantity and specification of their units. Given the budget constraint, the specifications of the parts of the mobile phones that will be purchased have to be optimized. The owners of mobile phone stores often do it manually and without scientific basis which lead to inefficiency. This research shows a scientific approach in minimizing the average annual cost of ordering and storing mobile phone sets. This is done by using Particle Swarm Optimization in purchasing the number of units and the specifications of their components.","PeriodicalId":309548,"journal":{"name":"2014 International Conference on Humanoid, Nanotechnology, Information Technology, Communication and Control, Environment and Management (HNICEM)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133347356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.1109/HNICEM.2014.7016255
Melsa Rose D. Ducut, A. R. Villagracia, J. Corpuz, N. Arboleda, M. David, R. Manrique, A. Ubando, A. Culaba
In pursuit of finding a more suitable way of drying microalgae that would require less energy input which will consequently lessen the production cost, a study was conducted to investigate the migration of water molecules across a cell membrane of microalgae. Molecular Dynamics simulations using GROMACS software were utilized to obtain a molecular model of a cell membrane. The membrane model was composed of 32 dilauroylphosphatidylcholine (DLPC) lipids, 32 dioleolyphosphatidylcholine (DOPC) lipids, 32 dipalmitoylphosphatidylcholine (DPPC) lipids, 32 distearoylphosphatidylcholine (DSPC) lipids and 6000 water molecules in an all-atom force field. The effect of varying the temperature on the bilayer thickness and the effect of varying the osmotic pressure on the water migration across the lipid bilayer were determined. The temperature was varied from 300 K to 345 K with 5 K interval and the pressure was changed from 100 MPa to 150 MPa with 10 MPa interval. Results showed that at increasing temperature the bilayer thickness increased but when it reached 340 K the bilayer thickness started thinning. Furthermore, at increasing osmotic pressure the water migration became faster.
{"title":"Molecular dynamics study on the effects of varying temperature and pressure on phosphatidylcholine lipids for microalgae drying","authors":"Melsa Rose D. Ducut, A. R. Villagracia, J. Corpuz, N. Arboleda, M. David, R. Manrique, A. Ubando, A. Culaba","doi":"10.1109/HNICEM.2014.7016255","DOIUrl":"https://doi.org/10.1109/HNICEM.2014.7016255","url":null,"abstract":"In pursuit of finding a more suitable way of drying microalgae that would require less energy input which will consequently lessen the production cost, a study was conducted to investigate the migration of water molecules across a cell membrane of microalgae. Molecular Dynamics simulations using GROMACS software were utilized to obtain a molecular model of a cell membrane. The membrane model was composed of 32 dilauroylphosphatidylcholine (DLPC) lipids, 32 dioleolyphosphatidylcholine (DOPC) lipids, 32 dipalmitoylphosphatidylcholine (DPPC) lipids, 32 distearoylphosphatidylcholine (DSPC) lipids and 6000 water molecules in an all-atom force field. The effect of varying the temperature on the bilayer thickness and the effect of varying the osmotic pressure on the water migration across the lipid bilayer were determined. The temperature was varied from 300 K to 345 K with 5 K interval and the pressure was changed from 100 MPa to 150 MPa with 10 MPa interval. Results showed that at increasing temperature the bilayer thickness increased but when it reached 340 K the bilayer thickness started thinning. Furthermore, at increasing osmotic pressure the water migration became faster.","PeriodicalId":309548,"journal":{"name":"2014 International Conference on Humanoid, Nanotechnology, Information Technology, Communication and Control, Environment and Management (HNICEM)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121131143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.1109/HNICEM.2014.7016242
F. Lilik, L. Kóczy
Performance evaluation of wire pairs of telecommunications access networks is a great challenge for telecommunications service providers. Although there are existing methods and systems for it, these are expensive or unpunctual. This paper presents a novel, hierarchical fuzzy inference based performance evaluation method for wire pairs of access networks, which is based on measurements of the pairs. The set of antecedent (input) parameters and their role in the evaluation, the consequent (output) states and the type of the used fuzzy rule bases are presented. In addition, the behavior and the role of the noise that can be measured in the wire pairs are detailed.
{"title":"Fuzzy based hierarchical performance evaluation in telecommunications access networks","authors":"F. Lilik, L. Kóczy","doi":"10.1109/HNICEM.2014.7016242","DOIUrl":"https://doi.org/10.1109/HNICEM.2014.7016242","url":null,"abstract":"Performance evaluation of wire pairs of telecommunications access networks is a great challenge for telecommunications service providers. Although there are existing methods and systems for it, these are expensive or unpunctual. This paper presents a novel, hierarchical fuzzy inference based performance evaluation method for wire pairs of access networks, which is based on measurements of the pairs. The set of antecedent (input) parameters and their role in the evaluation, the consequent (output) states and the type of the used fuzzy rule bases are presented. In addition, the behavior and the role of the noise that can be measured in the wire pairs are detailed.","PeriodicalId":309548,"journal":{"name":"2014 International Conference on Humanoid, Nanotechnology, Information Technology, Communication and Control, Environment and Management (HNICEM)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126731456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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