Secure data sharing in cloud and IoT by leveraging attribute-based encryption and blockchain

“Data sharing is very important to enable different types of cloud and IoT-based services. For example, organizations migrate their data to the cloud and share it with employees and customers in order to enjoy better fault-tolerance, high-availability, and scalability offered by the cloud. Wearable devices such as smart watch share user’s activity, location, and health data (e.g., heart rate, ECG) with the service provider for smart analytic. However, data can be sensitive, and the cloud and IoT service providers cannot be fully trusted with maintaining the security, privacy, and confidentiality of the data. Hence, new schemes and protocols are required to enable secure data sharing in the cloud and IoT. This work outlines our research contribution towards secure data sharing in the cloud and IoT. For secure data sharing in the cloud, this work proposes several novel attribute-based encryption schemes. The core contributions to this end are efficient revocation, prevention of collusion attacks, and multi-group support. On the other hand, for secure data sharing in IoT, a permissioned blockchain-based access control system has been proposed. The system can be used to enforce fine-grained access control on IoT data where the access control decision is made by the blockchain-based on the consensus of the participating nodes”--Abstract, page iv

Pheromone Use for Insect Control: Present Status and Prospect in Bangladesh

The insects world is filled with many odors. Insects use these odors to cue them in a variety of complex social behaviors, including courtship, mating, and egg laying. Scientists and pest control specialists have known about these complex communication systems for decades. The main aim of this study was to visualize the availability, trends and differences in the sources of pheromone control in agricultural growth of Bangladesh. It also concerned on constrains and present use of pheromone and their possible recommendation on behalf of Bangladesh agriculture. It concentrated on the data during last three decades (1980-2010), comprising status of pheromone use in Bangladesh agriculture and its future. Review revealed that Bangladesh has been enormously successful in increasing pheromone use in agricultural production (especially for vegetables). Understanding of the nature of pheromones and their potential for pest control along with the future prospective of pheromone technique in agriculture were stated. Since the pheromone, technologies for control of major crop pests in Bangladesh are still limited. So that this review emphasized on more attention to the authority to increase the research works and project facilities related to develop and promote pheromone techniques. It is highly recommended to increase availability of pheromone in market, more investment in research and development, introduction of newly identified pheromone for specific pest, to assist government and nongovernment organizations to work with farmers to reduce harmful insecticide use and promote pheromone tactics as one part of integrated crop management (ICM). DOI: http://dx.doi.org/10.3329/ijarit.v2i1.14005 Int. J. Agril. Res. Innov. & Tech. 2 (1): 47-55, June, 201

キソ キョウイク ニオケル シャカイ ケイザイテキ ヨウイン ニ カンスル コウサツ バングラデシュ ノ NGO プロシカ ニ チュウモク シテ

要旨 : 国連ミレニアム開発目標に基づき、2015年までに世界中の全ての人々が基礎的な初等教育を受けられる環境の整備が進められている。バングラデシュは、1991年に初等教育を義務化したものの、基礎教育を受けられない者が依然として存在する。特に、都市部と農村部の識字率の格差は大きく、政府やNGOは「万人のための教育（EFA : Education for All）」活動に取組んでいる。本稿では、同国においてノン・フォーマル教育の提供に重要な役割を担ってきた主要NGOであるプロシカに注目する。プロシカは、1990年より初等一般教育のプログラムを実施してきた。　本稿では、プロシカの実践を対象とし、学習者の基礎教育の習得度を明らかにするとともに、社会経済的要因が学習者の基礎教育習得にどのような影響を与えているかについて考察する。調査は、ラジャヒ地区（農村部）とダカ地区（都市部）の第4学年以降の子どもを対象とし、「読み・書き・計算・生活上のスキルと知識」の4分野の習得度について実施された。調査の結果は、学校の類型別、性別、地区別ごとのクロス集計や多変量解析によって処理した。基礎教育習得度に対する社会経済的要因に関するおもな知見は次のとおりであった。　・両親の学校教育経験は、都市部では影響があったが農村部ではなかった。　・生活保護受給の程度は、都市部の女子においてのみ影響があった。　・土地所有面積が大きい方が、習得度が高い傾向が見られた。　・都市部では、世帯の月収による差が習得度に影響していた。　・テレビへのアクセスはすべての子どもの習得度に影響があり、ラジオへのアクセスは都市部でのみ正の影響を与えていた。　以上のような分析から、プロシカの学校における基礎教育の習得度には、社会経済的要因の影響があることが明らかとなった。こうした社会経済的要因に関する格差を踏まえて、「万人のための教育」の取り組みが行われる必要がある

Leucine residues in conserved region of 33K protein of bovine adenovirus – 3 are important for binding to major late promoter and activation of late gene expression

AbstractThe L6 region of bovine adenovirus 3 (BAdV-3) encode 33K (spliced) and 22K (unspliced) proteins. Earlier, anti-33K serum detected five major and three minor proteins in BAdV-3 infected cells. Here, we demonstrate that anti-sera raised against L6-22K protein detected two proteins of 42 and 37kDa in BAdV-3 infected cells and one protein of 42kDa in transfected cells expressing splice-site variant 22K protein (pC.22K containing substituted splice acceptor/donor sequence). Unlike 22K, 33K stimulated the transcription from the major late promoter (MLP) by binding to the downstream sequence elements (DE). Analysis of the variant proteins demonstrated that amino acids 201–240 of the conserved C-terminus of 33K containing the potential leucine zipper and RS repeat are required for the activation of MLP. Furthermore, amino acid substitution analysis demonstrated that unlike arginine residues of RS repeat, the leucine residues (217, 224, 232 and 240) of the conserved leucine zipper appear required for the binding of 33K to the MLP

Satisfaction Level of Credit Card Holders in Khulna City of Bangladesh

This study measures the satisfaction level of credit card users living in Khulna, Bangladesh. The study also examines the factors affecting their satisfaction level. Data have been collected from 50 credit card users living in Khulna city of Bangladesh through a self-administered questionnaire. After data collection, descriptive statistics (arithmetic mean, percentage) has been calculated to measure the factor-wise satisfaction level. It has been found that users are highly satisfied with the online shopping facility as well as its convenience to use. The weighted mean value of 64.16% indicates that the users are satisfied with the overall services provided by the issuers. After that Regression analysis has been used to analyze the relationship between satisfaction and the factors that affect the satisfaction. Regression statistics shows that 56.7% variation in the dependent variable (Satisfaction of the credit card users) can be explained by the independent variables used in this study whereas convenience, Online shopping facility, Benefits & rewards are found statistically significant in influencing the satisfaction of the credit card users. This research expects that the proper use of the study findings may help the credit card issuers to develop their services as well as increase customer satisfaction. Keywords: Satisfaction, Credit Card Users, Khulna City, Bangladesh

Does Energy Consumption, Economic Growth, and Foreign Direct Investment Contribute to CO2 Emission? Evidence from Bangladesh

This work used the Johansen Cointegration Test and the Vector Error Correction Model (VECM) cointegration methodology to assess the long-run cointegrating relationship and short-run dynamics in Bangladesh between energy consumption economic growth, foreign direct investment, urbanization, population growth, and carbon emissions. To assess the long-term association between these variables, we examined data from 1972 to 2014, and empirical estimation revealed that all factors are significant at the 1% level of significance in the case of Bangladesh. Thus, energy consumption, economic growth, foreign direct investment, urbanization, population growth, and carbon emissions  all have shown the predicted sign and are statistically significant, indicating that increased energy consumption, gross domestic product, and population increase all are responsible for increased carbon emissions in Bangladesh. Higher FDI inflows, on the other hand, cut per capita carbon emissions in Bangladesh. On the other hand, the empirical outcome has revealed that there is no substantial causal association between carbon emissions and urbanization. Keywords: CO2; FDI; GDP; population growth; energy consumption; VECM DOI: 10.7176/JESD/12-12-05 Publication date:June 30th 202

Antagonistic Gcn5-Hda1 interactions revealed by mutations to the Anaphase Promoting Complex in yeast

<p>Abstract</p> <p>Background</p> <p>Histone post-translational modifications are critical for gene expression and cell viability. A broad spectrum of histone lysine residues have been identified in yeast that are targeted by a variety of modifying enzymes. However, the regulation and interaction of these enzymes remains relatively uncharacterized. Previously we demonstrated that deletion of either the histone acetyltransferase (HAT) <it>GCN5 </it>or the histone deacetylase (HDAC) <it>HDA1 </it>exacerbated the temperature sensitive (<it>ts</it>) mutant phenotype of the Anaphase Promoting Complex (APC) <it>apc5^CA</it>allele. Here, the <it>apc5^CA</it>mutant background is used to study a previously uncharacterized functional antagonistic genetic interaction between Gcn5 and Hda1 that is not detected in <it>APC5 </it>cells.</p> <p>Results</p> <p>Using Northerns, Westerns, reverse transcriptase PCR (rtPCR), chromatin immunoprecipitation (ChIP), and mutant phenotype suppression analysis, we observed that Hda1 and Gcn5 appear to compete for recruitment to promoters. We observed that the presence of Hda1 can partially occlude the binding of Gcn5 to the same promoter. Occlusion of Gcn5 recruitment to these promoters involved Hda1 and Tup1. Using sequential ChIP we show that Hda1 and Tup1 likely form complexes at these promoters, and that complex formation can be increased by deleting <it>GCN5</it>.</p> <p>Conclusions</p> <p>Our data suggests large Gcn5 and Hda1 containing complexes may compete for space on promoters that utilize the Ssn6/Tup1 repressor complex. We predict that in <it>apc5^CA</it>cells the accumulation of an APC target may compensate for the loss of both <it>GCN5 </it>and <it>HDA1</it>.</p

The contribution of different vinyl sulphone-reactive dyes to an effluent

AbstractThree types of vinyl sulphone dyes were measured in the effluent in this study. The selected dyes were Remazol Yellow RR (mono-functional), Remazol Blue RR (homo bi-functional) and Remazol Red RR (hetero bi-functional). The extinction coefficients of these dyes were measured by creating absorbance versus concentration curves. The absorbance values were obtained by testing standard solutions of each dye in a UV–visible spectrophotometer. The dyeing process was carried out at 4 different dye concentrations (0.025g/40ml, 0.05g/40ml, 0.10g/40ml and 0.15g/40ml) on a 5-g fabric sample for each of the dyes. The post-dye liquors and post-wash liquors were tested in an UV–visible spectrophotometer, and their concentrations were calculated using the Beer–Lambert law. The contribution of these dyes to the effluent was calculated and compared, and their adsorption isotherms (Langmuir and Freundlich isotherm) were analysed. The homo bi-functional dye (Blue RR) performed well in the dye bath, but it contributed significantly to the effluent during the washing stages. The mono-functional dye (Yellow RR) was able to adsorb, but it did not perform well due to its greater heterogeneity. The hetero bi-functional Red RR dye was found to be the most environmentally friendly in comparison with the other vinyl sulphone dyes

TUKAB: An Efficient NAT Traversal Scheme on Security of VoIP Network System Based on Session Initiation Protocol

Voice over Internet Protocol (VoIP) is subject to many security threats unique to both telephony and traditional Internet data transmission. As adoption of Session Initiation Protocol (SIP) based telephony increases, concerns are rising over risks to system confidentiality, integrity and availability. Currently, several VoIP security tools are available to detect vulnerabilities and protect against attacks. In this paper we present various issues concerning the security of VoIP. A brief discussion of the SIP protocol is presented based on its operating principle. Finally we proposed a solution for the Network Address Translation (NAT) traversal problem of SIP based networks. This solution supports all types of NAT and maintains the current VoIP architecture. Based on our experiment, we examined the latency, buffer size and voice packet loss under various network conditions. We found that it is possible to establish a call from outside the NAT to inside maintaining the quality issues of VoIP call. With this approach it is possible to use the current network architecture with having few changes in the registrar server. Hence we evaluate our model showing the QoS conditions that achieves both high efficiency and secure voice transmission. Sufficient simulation results are presented to verify our model