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Dust is a main source of different indoor contaminants, such as polychlorinated biphenyls (PCBs) generally applied in buildings. This study is the first report on the levels of PCBs in the indoor dust of Bushehr port, Iran. PCBs were evaluated in 30 dust samples collected from homes, offices, and stores. A total of 10 PCB congeners were found in dust samples. The mean levels of PCBs in homes, offices, and stores were 3.46, 0.51, and 1.28 ng/g, respectively. PCB52 and 31 in homes with values of 0.78 and 0.31 ng/g had the highest levels of PCB congeners. Also, no significant difference was detected among the PCB contents of buildings with different applications in Bushehr. Furthermore, PCBs in indoor dust showed acceptable cancer risk (CR) for different age groups. Most CR was observed for infants and toddlers at homes and stores thorough dust ingestion as the main exposure route to PCBs in dust. Based on the results of this research, exposure to PCBs in indoor buildings may cause a high risk for people of different ages. [ABSTRACT FROM AUTHOR]

This paper summarizes the arguments and counterarguments within the scientific discussion on the issue of electronic advertising in Saudi Arabia. The main purpose of this research is to explore the impact of internet advertising on companies’ visits to stores through an exploratory study. The systematization of literary sources and approaches for solving electronic advertising problems indicates that new mediating and moderating variables could have an impact on the relation between Internet advertising and visits to stores. In this research, the disposition to visit the point of sale is assimilated as a mediating construct rather than an implication with the product as a moderating variable. The relevance of this scientific problem decision is that this investigation of the consequences of electronic advertising for offline customer comportment in Saudi Arabia is unprecedented research that seeks to address this interesting question. The investigation of the role of online advertising and the impact of mediating and moderating variables on the visit to the store in the paper was carried out in the following logical sequence: the data were collected via an electronic survey. Of the 500 randomly selected Internet users in Saudi Arabia, only 350 responses were valid. This research used a structural equation model and multigroup analysis to examine the direct and indirect influences of variables. This paper presents the results of an empirical analysis that revealed a positive relation between internet advertising and visits to points of sale. The disposition to visit the point of sale mediates the relationship between Internet advertising and concrete visits to the store. The effect of the product moderates the effect of internet advertising on the disposition to visit the point of sale in Saudi Arabia. The research empirically confirms and theoretically proves that Saudi shoppers fine online advertising to be attractive when this advertising must have some actions and concepts flash. Therefore, Saudi directors should follow this form and use an effective mixture of content and animation. The e-shoppers who are involved are persons who have little engagement; for this reason, they are simply concerned about the tools of the publicity communication.

This paper summarizes the arguments and counterarguments within the scientific discussion on the issue of electronic advertising in Saudi Arabia. The main purpose of this research is to explore the impact of internet advertising on companies' visits to stores through an exploratory study. The systematization of literary sources and approaches for solving electronic advertising problems indicates that new mediating and moderating variables could have an impact on the relation between Internet advertising and visits to stores. In this research, the disposition to visit the point of sale is assimilated as a mediating construct rather than an implication with the product as a moderating variable. The relevance of this scientific problem decision is that this investigation of the consequences of electronic advertising for offline customer comportment in Saudi Arabia is unprecedented research that seeks to address this interesting question. The investigation of the role of online advertising and the impact of mediating and moderating variables on the visit to the store in the paper was carried out in the following logical sequence: the data were collected via an electronic survey. Of the 500 randomly selected Internet users in Saudi Arabia, only 350 responses were valid. This research used a structural equation model and multigroup analysis to examine the direct and indirect influences of variables. This paper presents the results of an empirical analysis that revealed a positive relation between internet advertising and visits to points of sale. The disposition to visit the point of sale mediates the relationship between Internet advertising and concrete visits to the store. The effect of the product moderates the effect of internet advertising on the disposition to visit the point of sale in Saudi Arabia. The research empirically confirms and theoretically proves that Saudi shoppers fine online advertising to be attractive when this advertising must have some actions and concepts flash. Therefore, Saudi directors should follow this form and use an effective mixture of content and animation. The e-shoppers who are involved are persons who have little engagement; for this reason, they are simply concerned about the tools of the publicity communication. [ABSTRACT FROM AUTHOR]

[Objective] Grain storage is an extremely complex process that is easily affected by the external environment. A temperature gradient is formed between the inside and outside of the grain pile, making the pile prone to rot and mildew. [Methods] To reduce the loss of grain and the occurrence of pests and mildew, this study uses a self-made test chamber and detection system to detect the grain temperature at different locations of corn grain storage and analyze the temperature change and the heat transfer process across the entire grain pile. Next, the prediction of corn grain storage temperature based on the LSTM algorithm is investigated by analyzing the corn grain storage test data. Based on the attributes and characteristics of the data, linear algebra, probability theory, and algorithm principles are applied to form a comprehensive decision and predict the corn grain storage temperature. [Results] The test results show that the atmospheric temperature outside the bin greatly influences the grain temperature, and the grain temperature in the bin falls behind that outside the bin as well as the ambient temperature. The temperature in the bottom No. 2 position always remain slow during the detection period, while the highest temperature occurs in the top No. 12 position. [Conclusions] Based on the analysis of grain pile temperature change, this study investigates the prediction of grain storage temperature based on the LSTM algorithm. Compared with the experimental values, the accuracy of the test sets of the first, second, third, and fourth layers is 0.62, 0.89, 0.83, and 0.79, respectively. Thus, the prediction results of the second and third layers of the grain pile have higher accuracy. The bottom and top layers of the grain pile in the test bin are easily affected by the ambient temperature, the heat exchange rate of the grain pile is fast, and the temperature changes rapidly, yielding less accurate prediction results for these layers. The research presented in this study provides new insights into the prediction of grain storage temperature. [ABSTRACT FROM AUTHOR]

This research aims to analyze the perception of customers who visit points of sale on the determining elements of visual merchandising. The study is carried out under a quantitative and descriptive approach through a survey applied to a sample of 159 external customers, where it was found that there is a primarily positive perception. However, there are unfavorable factors such as the ambiance with music, the relevance of promotions, seasonality, and distribution of products. In conclusion, it is known that Caracol stores, although they use Visual Merchandising, have aspects that customers negatively perceive.

The secondary refrigerant is an intermediate medium for transferring cold capacity, which can improved refrigeration efficiency. In this paper, the classification and characteristics of secondary refrigerants are introduced, and discusses the flow characteristics of secondary refrigerants and the apparent viscosity changes and flow resistance characteristics during the flow of secondary refrigerants. In addition, the application of different types of secondary refrigerants in aquatic product preservation and storage system is also discussed, among which non-phase change secondary refrigerant is mainly used in food impregnation and freezing. The phase change material refrigerant is mainly used in cold storage and refrigerating truck of aquatic product storage and transportation, and the future development direction of secondary refrigerant is prospected.

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Copyright of Revista FACE is the property of Universidad de Pamplona and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Background. Forming a system of spatial, social and cultural landmarks, each speaker consciously/unconsciously records proper names which seem important. The most significant units are remembered, and it is they that determine the general idea of the entire set of marked objects. Since the system of linguistic units in the individual mental lexicon is regulated by a great number of subjective factors, it can be assumed that the tendencies of the reflection of reality in the mental lexicon common to a group of speakers open the way to the analysis of current social stereotypes. Shop and store names are one of the groups of commercial names, therefore, by their very nature, they are maximally oriented towards reflecting positive stereotypes of large social groups. Purpose. The purpose of this article is to analyze how the names of shops and stores are reflected in the mental lexicon of the women residents of Kyiv, the capital of Ukraine, and to try to outline the connection between the proper names verbalization in speakers’ mental lexicon and their ideas about extralinguistic reality. Methods. The material for this study consists of 249 graphic variants of 160 names of clothing, footwear and food stores, collected by surveying 45 women residents of Kyiv. Descriptive, comparative, and quantitative methods were used in the research, and techniques of the structural method were occasionally involved. Results. Current store names in the capital of Ukraine create а very colorful linguistic landscape with its main feature – the predominance of foreign language components, both lexical and graphic. Among all this diversity, the speaker remembers 3 or 4 names оn average, which determine her idea of the general trends in the nomination of objects in this field and indirectly ‒ these objects themselves. The analysis of store and shop names active in the mental lexicon of Kyiv residents shows that the absolute majority of clothing and shoe stores (79 % and 81 %, respectively) are perceived by names identified with other cultural spaces. Not only the name’s origin, but primarily its graphic form is a clear indicator of belonging to some cultural space. The opposite case in the name system of grocery stores is recorded ‒ only 26 % of them were reproduced by respondents in Latin. The form in which the store or shop name is stored in the mental lexicon depends on a) the graphic code visualized on the signboard / in the advertisement and b) the sound form of the name commonly used in informal communication. The activity of the second factor directly depends on the symmetry of the sound and spelling of the barbarism name and the level of speaker’s foreign language competence. The result of the collision of different graphic codes in the speaker’s mind is mixing, which is manifested in the recording of the original form of the name from Latin to Cyrillic during memorization. Therefore, while keeping proper names in memory, speakers try to assimilate their form to the rest of the fixed units, and this often manifests itself in the transformation of the original form of proper name. Discussion. Oversaturation of Kyiv’s commercial ergonomics system with barbaric names forms a strong public stereotype about the attractiveness and progressiveness of other cultures in the consumption sphere and creates the illusion of the absence of national Ukrainian in it. Trying to master the system of store and shop names, Kyiv residents find themselves in a conflict situation: the dominant graphic code for them is the Cyrillic alphabet, while the Latin alphabet prevails in the visual space of Kyiv’s trade establishments. The way out of this situation is transformation ‒ recording of the original name with the help of a graphic system convenient for the speaker. In order to form a general idea about the reflection of the commercial proper names system in the mental lexicon of Ukrainians, it is necessary to involve in the study data from representatives of different age groups from different regions of the country.

Copyright of Journal of Computer Science & Technology (JOCSTEC) is the property of PT. Padang Tekno Corp and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The term "Internet of Things" (IoT) refers to an architecture in which digital objects have identification, sensing, connectivity, and processing capabilities that allow them to connect with other devices as well as perform tasks on the internet. There are many applications of IoT, among which Vehicle Delay-Tolerant Networks (VDTNs) are one of the best known. This new generation of vehicular networks can be applied in a variety of circumstances. For example, it can be employed to make data connections possible in densely crowded cities and as well as in remote and sparsely populated places with weak connectivity. These environments are characterized by frequent network partitioning, inconsistent connectivity, considerable propagation delays, high error rates, and short contact duration. Most of these behaviours are due to node selfishness. This task is crucial because selfish behaviour by nodes may make other nodes hesitant to cooperate. Selfish nodes have significant negative impacts on the effectiveness and efficiency of the network as a whole. To solve these issues, cooperative strategies that motivate nodes to share their resources must be considered. Important contributions to cooperation for vehicular networks are presented in this article, which investigates the effects of six different cooperative techniques on network performance and makes corresponding suggestions for their use in IoT-based VDTNs. Across all simulations, our results show that the studied strategies are all able to increase overall network performance by improving throughput and packet delivery probability, which in turn reduces average packet delivery time, energy consumption, overhead ratio, and the number of packets dropped. [ABSTRACT FROM AUTHOR]

Copyright of Proceedings of the Faculty of Economics & Business in Zagreb / Zbornik Ekonomskog Fakulteta u Zagrebu is the property of Ekonomski Fakultet u Zagrebu and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

A factorial layout based on a randomized complete block design in three repetitions was carried out to evaluate and compare the effect of early and common planting on two potato cultivars in 2018-2019 in research farms at Razi University of Kermanshah. Experimental factors included 4 planting dates (November 16, 2018-March 16, 2019-April 9, 2019-May 10, 2019) and two cultivars (Sante and Marfona). Cultivar factor affected significantly on total yield, No. of small (less than 35 mm) and medium tubers, the weight of small and medium tubers (p< 0.01), marketable yield, and tuber dry matter (p<0.05). Also there were significantly different in total yield, marketable yield, the weight of medium and large tubers, number of large tubers, the weight of infected tubers, number and length of the main stem, dry matter percentage, and tuber starch percentage between various planting dates. The highest and the lowest mean marketable tuber yield were observed in November and May planting dates, respectively (53.1 and 36.6 tonnes per hectare, respectively). Also, planting date significantly affected on infected tuber weight (p<0.01), so November planting date resulted in no infected tuber compared to other planting dates. Water consumption (m3.h-1) was 5040, 7230, and 6962 in March, April, and May planting dates, respectively, that were more than the November planting date (4350). Then, net income increased 55% from the sale of tubers by shifting the planting date from common to autumn cultivation. In addition to producing higher quality tubers, potato cultivation in the autumn had a relatively higher price in the market. [ABSTRACT FROM AUTHOR]

[Display omitted] • The process of community assembly during storage of Daqu was determined. • The characteristics of Daqu microecology in different seasons were analyzed. • Driving factors driving the difference of Daqu microecology in different seasons were identified. • The microecological difference between Daqu in storage period and fermentation period was analyzed. Metagenomics, non-targeted metabolomics, and metaproteomics were employed to analyze the microecological succession of high-temperature Daqu during storage, elucidate the adaptation mechanism of the microbial community of Daqu to storage environments, and clarify the microecological characteristics of Daqu during different seasons. During storage, the relative abundances of Bacillus , Oceanobacillus , Staphylococcus , and Aspergillus in Daqu had significantly increased, while those of Kroppenstedtia , Saccharopolyspora , Thermoascus , and Thermomyces had significantly decreased. During the first 3 months of storage, compound metabolism of Daqu was primarily dominated by generation of small molecular substances and then shifted to metabolism of amino sugars. During the storage process, homogeneous selection (15.57 %) and homogeneous diffusion (14.86 %) of the microbial communities of Daqu were much larger than during the fermentation process, while the variable selection assembly (29.43 %) was smaller than during the fermentation process. Among the 2509 proteins identified in the four-season Daqu, bacterial protein expression was 1.46-fold greater than that of fungi. Seasonal factors influenced the function of Daqu by alterations to Bacillus subtilis , Oceanobacillus iheyensis , and Aspergillus nidulans and other microbial functions. Carbon and benzoic acid metabolism of Daqu was relatively increased during the spring, while metabolism of alkaloids and tyrosine was upregulated during the summer, amino acid synthesis and starch metabolism were enriched during the autumn, and peptidoglycan synthesis was relatively greater during the winter. Adjusting the moisture content of Daqu during the storage period was shown to reduce microecological differentiation caused by seasonal temperature variations. [ABSTRACT FROM AUTHOR]

Copyright of Modern Food Science & Technology is the property of Editorial Office of Modern Food Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This document is a complete report on the research conducted and the project made in thefield of computer engineering to develop a software for E-market place to manage the details of Products, Customer, Shipping, Payment, Category. It manages all the information about Products, Sales, Category, Products. The project is totally built at the administrative end and thus only the administrator is guaranteed the access. The purpose of the project is to build an application program to reduce the manual work for managing the Products, Customer, Sales, Shipping. It tracks all the details about the Shipping, Payment and Category. The report proposed the results and solutions on the limi ted implementation ofthe various techniques that are introduced in the project. [ABSTRACT FROM AUTHOR]

The article considers ways to use the technology of radio frequency identification of data in retail companies. The author studies the traditional directions of using RFID technology, such as identification of data on the goods carried out at its acceptance, tracking the movement of goods along the supply chain, accounting of commodity units when loading into the vehicle and when picking the order, inventory of the goods. The paper also considers promising, but at the moment little common areas of application of technology in retail: personal digital assistants for managing the placement of goods on the shelves of the store, “smart fitting,” systems for automatic payment of goods and some others. Today, RFID technology can also be used for marketing research, to prevent theft in stores, to organize an improved customer service, to create inventory management systems. The author highlights the advantages received by retailers when applying RFID technology, and the barriers that prevent its active implementation.

Canada legalized nonmedical cannabis in October 2018, but significant variations in municipal regulations exist. This study explored the variations that exist and pondered their potential public health consequences. A comparative analysis was completed on the regulations and guidelines that addressed retailers' location and public consumption in the municipalities of Alberta, Ontario, and Québec. Municipal regulations that addressed the location of retailers were more numerous and extensive in Alberta and Ontario (in the context of provincial private retail models) than in Québec (government‐based model). Municipalities in Alberta added more restrictions to public consumption laws as compared to municipalities in Ontario and in Québec. These additions were made to Alberta's and Ontario's provincial‐level smoking and vaping bans which used tobacco‐inspired frameworks, and to Québec's ban on smoking and vaping in all public spaces. The comparative analysis showed the importance of considering municipal cannabis regulations when studying the impact of legalization, given the significant variations that exist. Policy makers should be made aware of these variations in the regulation of cannabis in order to limit health harms and further social inequalities. [ABSTRACT FROM AUTHOR]

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Copyright of TECHNO Review is the property of Eurasia Academic Publishing Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Crowd counting and surveillance in public spaces and stores is a difficult task to complete. Because of the large population and variety of human activities, crowded scenes must be more frequent. The requirement for a mechanism to track crowd counting in certain periods, such as during the COVID outbreak, is critical. In this COVID scenario, large crowds without keeping social distance and without any measures can easily spread the COVID-19 virus. Store personnels may find it difficult to handle large crowds when a large group of people gathers at a store to make a purchase. This study proposes a method that can be used in stores to assist customers to plan their shopping trips properly, maintaining social distance. This software primarily aids users in locating shops in their area that they wish to visit, as well as offering information on the quietest and busiest times of the day to visit each shop. The user interface of the system is designed in such a way that the search function and GPS function aid you in identifying nearby retailers as well as monitoring the state of local establishments to determine if they are crowded or not. [ABSTRACT FROM AUTHOR]

Log-Structured Merge-tree (LSM-tree) organizes write-friendly and hierarchical structure, which leads to inevitable disk I/O from data compaction occuring between layers. Previous research tried to reduce write bottlenecks of LSM-tree by using non-volatile memory (NVM) to LSM-tree, but write amplification on compaction does not resolved. In this paper, we present tiered LSM (TLSM), a persistent LSM-based key-value database tiering NVM, which is regarded as fast storage device. Our design aims to exploit multi-layered LSM system utilizing NVM and reduce redundant cost on compaction. We address 4 key points: (1) analysis of disk I/O overhead on current LSM-tree, (2) novel design of TLSM preserving the concept of LSM-tree and utilizing NVM, (3) persistent and byte-addressable data compaction minimizing disk write, and (4) tiering policy for increasing usability to TLSM. To implement TLSM-tree, we extended LevelDB, which is a simple LSM-based key-value store. On micro-benchmark DB Bench, the write and read latencies of TLSM are improved up to 34% and 57%, respectively, compared to those of LevelDB-NVM. In evaluation of YCSB, TLSM also reduces the write and read latencies of existing LevelDB up to 25%, 33%, respectively. Furthermore, frequency of write stall and total amount of data write are reduced significantly in TLSM.

This study was conducted to determine the fumigant effects of the essential oil from Ruta graveolens L. flowers and leaves against Khapra beetle [Trogoderma granarium (Coleoptera: Dermestidae)] larvae and adults. Cultivation of stock cultures and experiments were carried out under 35±2 °C temperature and 16 hours light 8 hours dark photoperiod conditions in 3 replicates with in each repetition. In the studies, 10 pieces of wheat and 10 pieces of T. granarium larvae or adults were put in 10 ml glass tubes. Different 5 concentrations (1.5, 3.5, 6.5, 9.2 and 12.0 µl/ml) of R. graveolens essential oil were used 10 µl for each tube. Results evaluated by considering the number of live and dead individuals at the end of 24, 48 and 72 hours. According to the results obtained from fumigant effect tests against T. granarium larvae and adults; it has been determined that the toxicity varies depending on the application dose and the application time of the plant essential oil and it has an effect of 100% on the larvae of the pest at the end of the 72 hour, and the maximum effect in adult individuals is 28.57% at a concentration of 3.5 µl/ml. [ABSTRACT FROM AUTHOR]

Modern web applications require flow of large amounts of data. To maintain order in code, a state manager was invented. With manager all data can be retrieved from and goes to one place. In this paper, four libraries for state management (NgRx, Ngxs, Redux, Vuex) were analyzed. Five criteria were used for the study: code metrics, solution structure, availability of ready-made implementations, community support, and performance testing. Results showed that there is not the best tool in every criterion, but when comparing the results obtained, the most universal solution is Vuex.

Implementing security and privacy requirements at every level of the software development cycle is imperative for ensuring optimum usability as well as the users' satisfaction. Software development must consider and comply effectively with the risks involved in the privacy and protection of confidential data. This research study endeavors to integrate the standards of data protection along with the Security Threat Oriented Requirements Engineering (STORE) methodology in order to recognize the potential threats to privacy requirements. The proposed extension of the STORE methodology, called the P-STORE, is validated by a case study of the Healthcare Management Software (HMS) system project. Furthermore, we have used the integrated fuzzy AHP with fuzzy TOPSIS technique for the usability assessment of different privacy requirements engineering approaches including the P-STORE methodology. The study demonstrates that the P-STORE approach has the capability to elicit more efficient privacy requirements and that it allows the software engineer to arrange privacy requirements efficaciously. [ABSTRACT FROM AUTHOR]

The aim of this study was to investigate the estimation and management of fish and shrimp wastes in Bushehr province. Two-part questionnaire including the demographic information, and fish and shrimp waste disposal method were completed for 91 stores and 636 households. The quantity of generated wastes was estimated based on the 3 different Scenarios. In addition, the waste generation factor were calculated for common fish and shrimp species. Results showed the waste generation factor for fish and shrimp equal to 32.67 and 42%, respectively. The total quantity of fish- and shrimp-generated wastes in Bushehr province was estimated to be 29,388 tons per year, of which the quantity of generated waste by stores and by households was 3731 tons per year (16 ton per capita per year) and 8804 tons per year (34 kg per capita per year), respectively. The remaining quantity is related to other unaccounted sectors such as fish industries. Moreover, the biogas production potential from an anaerobic digestion were estimated 2,675,400 m3 per year, which is equivalent to 16,052 MWh. In addition, the biodiesel production potential was obtained equivalent to 19 kt, which is about 4.2% of the total diesel fuel requirement of the province in 2016. [ABSTRACT FROM AUTHOR]

In the present study we investigated the possibility to use air ozone in fruit tree storage. The variables were: rate of ozonization, length of exposure to ozonized air and storage temperature. We assessed the impact of ozone on the vitality of the trees or bench grafted rootstocks, any changes appearing after storage and the feasibility of this technique under real conditions. Supplementary research was done to test the impact of ozonization on the potential occurrence of microorganisms and pests on trees. Results showed that trees can withstand relatively high rates of ozonization except for peach which is the most sensitive fruit; all the ozonization treatments impaired peach vitality. Other species withstand three months of storage in 1 °C and one hour of exposure to ozone in fortnight intervals without a significant impact on their vitality. A higher (5 °C) storage temperature with or without ozonization decreased the vitality of trees. Although it has been proved that ozonization can suppress damage‑causing microorganisms (bacteria and fungi) on trees, the fortnight frequency of ozonization did not prevent mould to develop. Results also indicated the potential effect of ozonization on the disinfestation of plant material from overwintering pests. The main operation restrictions of ozone exposure is the ability of ozone to decompose some materials and that it is harmful to human health.

In our biomedical educational program, students follow research courses. Traditionally, students receive research questions and pre-determined, teacher-prepared lists of laboratory materials to use. Currently, we aim to increase our research courses' inquiry level towards a more open inquiry by omitting these teacher-prepared lists. Additionally, we want to enhance the flexibility of student-teacher interactions during research courses. Therefore, Virtual Labstore was developed. This is an online 3D laboratory stockroom in which students are able to browse all the laboratory materials present in our university and buy materials for their experiments within the limits of predetermined financial budgets. Furthermore, several online communication tools were made available to facilitate remote student-teacher interaction. Although several students initially experienced internet-connection related problems and lacked overview of the virtual workspace itself, students indicated during focus group sessions that using Virtual Labstore instead of teacher-prepared lists stimulated thinking about how to perform their experiments. Additionally, they acknowledged the value of being able to look for materials and communicate with their teacher independently of physical location. In conclusion, Virtual Labstore positively affected students' perceptions on learning about experimental design and increased student-teacher interaction flexibility. However, Wi-Fi-stability should be checked, and time should be allocated for student-training before use. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Henan University of Technology Natural Science Edition is the property of Henan University of Technology Journal Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The article analyzes the current status and development tendencies of the Ivano-Frankivsk region’s store trade in 2010-2016. The regional aspects of the main indicators of the development of stores are reflected: dynamics of retail turnover of retail trade enterprises; retail turnover in cities and rural areas, food and non-food products per capita; dynamics of indicators as to development of stores of retail trade network of the enterprises as legal entities; dynamics of development of self-service stores and others. Measures for leveling the disproportion in the development of retail trade network both in the cities and the rural areas of the Ivano-Frankivsk region are suggested.

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Copyright of Palermo Business Review is the property of Universidad de Palermo and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)