International Journal of Material and Mathematical Sciences最新文献_第2页

An Economic Analysis of the Smallholder Dairy Farming: A Case Study in Muktagacha Upazila, Mymensingh 小农奶牛养殖的经济分析:以Mymensingh Muktagacha Upazila为例

International Journal of Material and Mathematical Sciences Pub Date : 2023-08-30 DOI: 10.34104/ijmms.023.025033

{"title":"An Economic Analysis of the Smallholder Dairy Farming: A Case Study in Muktagacha Upazila, Mymensingh","authors":"","doi":"10.34104/ijmms.023.025033","DOIUrl":"https://doi.org/10.34104/ijmms.023.025033","url":null,"abstract":"The present study was conducted to analyze the smallholder dairy farming sector in the rural areas of Bangladesh from an economic viewpoint. In this study we tried to find out the factors affecting dairy income and milk productivity, comparing the results from crossbred and indigenous cows and also found out the various constraints faced by smallholder farmers in dairy farming in rural areas of Muktagacha Upazila. Primary data was collected from four different villages at Muktagacha Upazila in the Mymensingh division. The sample size was 40 cattle farmers. They were interviewed through a survey questionnaire. To analyze farmer’s income and milk production in relation to economic factors two econometric and economic models were used as Multiple regression models and the cobb-douglas production function. From the survey, it was found that dairy farms owned on average 3.07 milking cows comparing .37 indigenous and 2.70 crossbred cows. In selected areas, most of the dairy farmers own about 3.07 milking cows where maximum cows are crossbred cows and a small number of cows are indigenous. At present time due to price rise in every sector. Dairy farmers in rural areas also need to find ways to produce more at the lowest cost. Milk productivity was 6.90 liter per cow per day, in crossbred whereas indigenous cows provided only 1.9/2.00 liter per day and total productivity was 12/13kg. From the average viewpoint it was found that, in large farms, the productivity was large compared to the small firms or households. We also tried to estimate the average monthly income from the firm. From this study finding it is clear that cross-bred cows are providing higher economic benefits to the dairy farmers compared to the indigenous breeds. With the improvement in every step such as training programs, food cost, proper farm management, proper treatment of the cows, and farming experience are highly related to the monthly income and milk productivity. Now a day, smallholder dairy farming is a progressive economic sector despite various constraints.","PeriodicalId":220610,"journal":{"name":"International Journal of Material and Mathematical Sciences","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136242693","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}

引用次数: 0

Modification of the Power Transmission System of BRRI Hydro-Tiller BRRI型液压分蘖机动力传动系统的改造

International Journal of Material and Mathematical Sciences Pub Date : 2023-06-29 DOI: 10.34104/ijmms.023.0190024

{"title":"Modification of the Power Transmission System of BRRI Hydro-Tiller","authors":"","doi":"10.34104/ijmms.023.0190024","DOIUrl":"https://doi.org/10.34104/ijmms.023.0190024","url":null,"abstract":"The existing BRRI Hydro-tiller was tested at BRRI West byde to find out the causes of frequent tearing of the hydro-tiller chain. Its capacity was found 0.023 ha/hr. The reason associated with the fault of hydro-tiller chain tearing was identified i.e. thickness of the chain was not sufficient to bear the load, strength of the bearing of the rotary box was not sufficient to bear the load. To overcome the problem, the thickness of the sprocket was increased to 11mm. ASME #60 chain was used instead of ASME #50 chain. The width of the ASME #60 chain is 23 mm. In addition, two bearings were set in combination with the rotary box shaft instead of a single bearing to increase the strength of the Hydro-tiller in smooth operation at full load condition. The size of each bearing was 62 mm x 16 mm. The complete design of the modified hydro-tiller was done with the help of the Solid Works tool. After that, the modified hydro-tiller was tested at BRRI West byde, Gazipur. After modification, the capacity of the hydro-tiller was increased to 0.039 ha/hr. The average fuel consumption of the modified hydro-tiller was 2.01 l/hr. The number of chain and belt tearing of the hydro-tiller has decreased drastically to below 8 per year after the modification. No event of engine stopping due to overloading arose during land cultivation.","PeriodicalId":220610,"journal":{"name":"International Journal of Material and Mathematical Sciences","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135155827","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}

引用次数: 0

Modification of Power Transmission System of BRRI Hydro-tiller BRRI型液压分蘖机动力传动系统的改造

International Journal of Material and Mathematical Sciences Pub Date : 2023-06-28 DOI: 10.34104/ijmms.023.019024

{"title":"Modification of Power Transmission System of BRRI Hydro-tiller","authors":"","doi":"10.34104/ijmms.023.019024","DOIUrl":"https://doi.org/10.34104/ijmms.023.019024","url":null,"abstract":"The existing BRRI Hydro-tiller was tested at BRRI West byde to find out the causes of frequent tearing of the hydro-tiller chain. Its capacity was found 0.023 ha/hr. The reason associated with the fault of hydro-tiller chain tearing was identified i.e. thickness of the chain was not sufficient to bear the load, strength of the bearing of the rotary box was not sufficient to bear the load. To overcome the problem, the thickness of the sprocket was increased to 11mm. ASME #60 chain was used instead of ASME #50 chain. The width of the ASME #60 chain is 23 mm. In addition, two bearings were set in combination with the rotary box shaft instead of a single bearing to increase the strength of the Hydro-tiller in smooth operation at full load condition. The size of each bearing was 62 mm x 16 mm. The complete design of the modified hydro-tiller was done with the help of the Solid Works tool. After that, the modified hydro-tiller was tested at BRRI West byde, Gazipur. After modification, the capacity of the hydro-tiller was increased to 0.039 ha/hr. The average fuel consumption of the modified hydro-tiller was 2.01 l/hr. The number of chain and belt tearing of the hydro-tiller has decreased drastically to below 8 per year after the modification. No event of engine stopping due to overloading arose during land cultivation.","PeriodicalId":220610,"journal":{"name":"International Journal of Material and Mathematical Sciences","volume":"160 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135359799","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}

引用次数: 1

Techniques, Methods, and Analysis of Text Mining: A Review 文本挖掘的技术、方法和分析综述

International Journal of Material and Mathematical Sciences Pub Date : 2023-04-30 DOI: 10.34104/ijmms.023.09015

{"title":"Techniques, Methods, and Analysis of Text Mining: A Review","authors":"","doi":"10.34104/ijmms.023.09015","DOIUrl":"https://doi.org/10.34104/ijmms.023.09015","url":null,"abstract":"Recent technological advances have led to the availability of new types of observations and measurements that were previously not available and that have fueled the ‘Big Data’ trend. Along with standard structured forms of data (containing mainly numbers), modern databases include new forms of unstructured data comprising words, images, sounds, and videos which require new techniques to be exploited and interpreted. This study focuses on Text Mining, which is a set of statistical and computer science techniques specifically developed to analyze text data. New sources of text data are now available, such as text messaging, social media activity, blogs, and web searches. The increasing availability of published text, sophisticated technologies, and growing interest in organizations in extracting information from text have led to replacing (or at least supplementing) the human effort with automatic systems. Text mining can be used for a variety of scopes, ranging from basic descriptions of text content through word counts to more sophisticated uses such as finding links between authors and evaluating the content of scripts (e.g., automated marking of essays). Its basic purpose is to process the unstructured information contained in text data in order to make text accessible to various Data mining statistical algorithms. This could help make text data as informative as standard structured data and allow us to investigate relationships and patterns that would otherwise be extremely difficult, if not impossible, to discover. This study takes a quick look at how to organize and analyze unstructured text data using R programming language. And implementing various text mining operations to clean and structure the “eng_news_2020” dataset. This study also represents some association between the words using the chi-square test and clustering procedure.","PeriodicalId":220610,"journal":{"name":"International Journal of Material and Mathematical Sciences","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135803118","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}

引用次数: 0

Magnetohydrodynamics (MHD) Effects on Heat Generation and Joule Heating with Non-Uniform Surface Temperature and Natural Convection Flow over a Vertical Flat Plate 磁流体力学(MHD)对垂直平板上非均匀表面温度和自然对流的产热和焦耳加热的影响

International Journal of Material and Mathematical Sciences Pub Date : 2023-04-27 DOI: 10.34104/ijmms.023.09018

引用次数: 2

Proposing a Continuous Spectral-Spatial Sparse Representation Model for Denoising Hyperspectral Images 提出了一种用于高光谱图像去噪的连续光谱-空间稀疏表示模型

International Journal of Material and Mathematical Sciences Pub Date : 2023-02-28 DOI: 10.34104/ijmms.023.0108

Niousha Zhale, Ali Valinejad

{"title":"Proposing a Continuous Spectral-Spatial Sparse Representation Model for Denoising Hyperspectral Images","authors":"Niousha Zhale, Ali Valinejad","doi":"10.34104/ijmms.023.0108","DOIUrl":"https://doi.org/10.34104/ijmms.023.0108","url":null,"abstract":"Due to its high capability in acquiring spectral and spatial information, hyperspectral imaging technology has gained significant attention in remote sensing. However, in practice, it is impossible to avoid noise in hyper spectral images due to camera artifacts and the external environment during the acquisition and transmission process. The presence of noise in these images hinders the detection of subtle differences between different materials in the image. Therefore, it is crucial to minimize noise as much as possible before performing any analysis and interpretation. Removing noise from hyperspectral images is a crucial preprocessing step that enhances image quality for various applications, including object recognition and classification. The challenge arises when we need to remove additive white mean-spherohomogeneous Gaussian noise from the given image. Previous research has suggested that thinning the noise-free parts of the image can be effective in removing noise. This article aims to implement the method proposed in using a programming language. The method involves extracting intra-band structure and inter-band correlation while displaying the common tank and learning the common dictionary. In the continuous thin coding phase, the inter-band correlation is extracted to maintain the same structure and achieve spectrum continuity. In contrast, the intra-band structure is used to encode differences in the spatial structure of different bands. Furthermore, a joint dictionary training algorithm is used to obtain a dictionary that simultaneously describes the content of different bands. This ensures that the resulting dictionary preserves the inter-band correlations and enhances the noise-removal process.","PeriodicalId":220610,"journal":{"name":"International Journal of Material and Mathematical Sciences","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121280333","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}

引用次数: 0

Investigation of Structural with Electronic Properties of Methylammonium Lead Iodide Perovskite Using Density Functional Theory 用密度泛函理论研究甲基碘化铅钙钛矿的结构与电子性能

International Journal of Material and Mathematical Sciences Pub Date : 2022-12-31 DOI: 10.34104/ijmms.022.01070113

引用次数: 0

Solar Energy in Perspective of the Quran, Energy Exchanges in Solar System, Burning and Extinguishing Flames in Space 《古兰经》中的太阳能，太阳系中的能量交换，太空中火焰的燃烧与熄灭

International Journal of Material and Mathematical Sciences Pub Date : 2022-10-30 DOI: 10.34104/ijmms.022.01020106

引用次数: 0

Study of Properties of Local Polypropylene Compared to International Standard Properties 国产聚丙烯性能与国际标准性能的比较研究

International Journal of Material and Mathematical Sciences Pub Date : 2022-08-30 DOI: 10.34104/ijmms.022.0940101

引用次数: 0

Synthesis a Clay Based Photocatalyst for the Removal of Eosin Yellow in Aqueous Solution 用于去除水溶液中伊红黄的粘土基光催化剂的合成

International Journal of Material and Mathematical Sciences Pub Date : 2022-07-31 DOI: 10.34104/ijmms.022.083093

{"title":"Synthesis a Clay Based Photocatalyst for the Removal of Eosin Yellow in Aqueous Solution","authors":"","doi":"10.34104/ijmms.022.083093","DOIUrl":"https://doi.org/10.34104/ijmms.022.083093","url":null,"abstract":"Composite photocatalysts of clay and ZnO have been prepared using three different compositions and characterized by various techniques such as SEM, EDX, FTIR, and XRD. SEM micrographs in different magnifications revealed different morphology of composite particles rather than commercial ZnO and clay. The particle size of the prepared composite decreased with the increasing amount of clay and thus improves the catalyst surface area. EDX revealed that the composite contains clay and ZnO only. According to FTIR spectrum data, when the ratios of clay to ZnO are 12:88 and 25:75, all the clay particles are completely covered. The shift in the peak position of XRD patterns indicates the molecular level interaction between clay and ZnO. The composite photocatalyst with a composition of clay: ZnO = 25:75 has the highest capability to eliminate Eosin Yellow (EY) by both adsorption and photodegradation among the tested composite photocatalysts. At this composition, the degrading rate of 0.2 g of material in a 2×10-5 M aqueous solution was around 44.48% EY. However, after 60 minutes of photodegradation using UV light, the entire elimination of dye, including adsorption and photodegradation, is around 68.32%. As the concentration of EY increased, the degradation rate of EY reduced. It was discovered that the consequences of HCO3-, CO32-, Cl-, NO3-, and SO42- ions were deleterious to the photodegradation of EY. It was also discovered that the UV source was more effective than the visible source. An intense UV light causes EY to completely degrade.","PeriodicalId":220610,"journal":{"name":"International Journal of Material and Mathematical Sciences","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133704648","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}

引用次数: 1