scholarly journals Realization of combinatorial optimization of small-scale S-box

2021 ◽  
Vol 2078 (1) ◽  
pp. 012025
Author(s):  
Yating Huang ◽  
Ming Mao ◽  
Yanjun Li ◽  
Weiguo Zhang
Keyword(s):  
Hardware Implementation ◽  
New Technology ◽  
Linear Part ◽  
Optimization Criterion ◽  
Second Step ◽  
Small Scale ◽  
Nonlinear Part ◽  
Logic Optimization ◽  
Present Algorithm

Abstract This method describes a new technology for combinatorial logic optimization in detail, which can combine multiple criteria to reduce the hardware implementation area of the S-box. This technique can be achieved in two steps. The first is to optimize the non-linear part of the S-box. According to the optimization criterion of multiplication complexity, the quality of the S-box nonlinear part optimization can be judged, and the realization of the S-box with the smallest multiplication complexity can be obtained. The second step is to optimize the linear part of the S-box, and optimize on the basis of the results of the first step, focusing on reducing the number of XOR gates, and the optimization is performed through a heuristic-based algorithm. The above combinatorial logic optimization technology can be applied to any small S-box (5 × 5 and below). Finally, the S-box of PRESENT algorithm and CTC2 algorithm are used as examples to illustrate the optimization effect, and the optimal realization under the minimum AND gate condition is obtained.

Forecasting of Summer Monsoon Rainfall over Gangetic West Bengal, India Utilising Intrinsic Mode Functions, Linear and Neural Regression

2020 ◽  
Vol 12 (1) ◽  
pp. 60-69 ◽  
Author(s):  
Pijush Basak
Keyword(s):  
Neural Network ◽  
West Bengal ◽  
Monsoon Rainfall ◽  
Linear Part ◽  
Intrinsic Mode Functions ◽  
Quasi Biennial Oscillation ◽  
Nonlinear Part ◽  
South West ◽  
South West Monsoon ◽  
West Monsoon

The South West Monsoon rainfall data of the meteorological subdivision number 6 of India enclosing Gangetic West Bengal is shown to be decomposable into eight empirical time series, namely Intrinsic Mode Functions. This leads one to identify the first empirical mode as a nonlinear part and the remaining modes as the linear part of the data. The nonlinear part is modeled with the technique Neural Network based Generalized Regression Neural Network model technique whereas the linear part is sensibly modeled through simple regression method. The different Intrinsic modes as verified are well connected with relevant atmospheric features, namely, El Nino, Quasi-biennial Oscillation, Sunspot cycle and others. It is observed that the proposed model explains around 75% of inter annual variability (IAV) of the rainfall series of Gangetic West Bengal. The model is efficient in statistical forecasting of South West Monsoon rainfall in the region as verified from independent part of the real data. The statistical forecasts of SWM rainfall for GWB for the years 2012 and 2013 are108.71 cm and 126.21 cm respectively, where as corresponding to the actual rainfall of 93.19 cm 115.20 cm respectively which are within one standard deviation of mean rainfall.

PENGUATAN KAPASITAS WIRAUSAHAWAN MIKRO MENGGUNAKAN METODE PENDAMPINGAN DI DESA MEKARGALIH, KECAMATAN JATINANGOR, KABUPATEN SUMEDANG

Dharmakarya ◽  
2020 ◽  
Vol 9 (2) ◽  
Author(s):  
RUDI Saprudin DARWIS
Keyword(s):  
Service Learning ◽  
Business Development ◽  
Small Scale ◽  
Learning Program ◽  
Student Service

ABSTRACTWeaknesses that are still commonly found in the businesses carried out by MSME entrepreneurs are the weakness of business accounting and packaging. Small scale business with limited marketing is seen as not requiring bookkeeping in its management and does not require packaging that is too good. This is the basis for the need for assistance to improve the capacity of MSME actors. Improving the capacity of MSME actors individually is done using the mentoring method. The choice to use a mentoring method to increase business productivity. Assistance was carried out with students of SMEs during the student service-learning program in Mekargalih Village, Jatinangor District, Sumedang Regency. Bookkeeping assistance is carried out by students by carrying out bookkeeping practices together so that the community can continue to learn good bookkeeping methods. Likewise, assistance in improving the quality of shredded chili packaging. Students help SMEs in designing packaging that will be used on their products. The assistance process is considered effective in supporting the business development of MSME entrepreneurs because the process can be carried out intensively. ABSTRAKKelemahan yang masih banyak ditemui pada usaha-usaha yang dilakukan pelaku UMKM adalah lemahnya pembukuan usaha dan pengemasannya. Skala usaha yang kecil dengan pemasaran yang terbatas dipandang tidak memerlukan pembukuan dalam pengelolaanya serta tidak memerlukan pengemasan yang terlalu bagus. Hal ini menjadi dasar perlunya dilakukan pendampingan untuk meningkatkan kapasitas pelaku UMKM. Peningkatan kapasitas pelaku UMKM secara perorangan dilakukan dengan menggunakan metode pendampingan. Pilihan untuk menggunakan metode pendampingan dalam meningkatkan produktivitas usahanya. Pendampingan dilakukan bersama mahasiswa terhadap pelaku UMKM selama pelaksanaan KKN mahasiswa di Desa Mekargalih, Kecamatan Jatinangor, Kabupaten Sumedang. Pendampingan pembukuan dilakukan mahasiswa dengan cara melakukan praktik pembukuan bersama-sama sehingga masyarakat bisa terus mempelajari cara pembukuan yang baik. Demikian juga dengan pendampingan dalam peningkatan mutu kualitas kemasan abon cabe. Mahasiswa membantu pelaku UMKM dalam merancang kemasan yang akan digunakan pada produknya. Proses pendampingan dinilai efektif dalam mendukung pengembangan usaha pelaku UMKM karena proses bisa dilakukan secara intensif.

Effects and Risks of Distance Learning in Higher Education

2020 ◽  
pp. 61-73
Author(s):  
Yu. M. Tsygalov
Keyword(s):  
Higher Education ◽  
Distance Learning ◽  
Online Education ◽  
New Technology ◽  
Negative Consequences ◽  
Higher Education System ◽  
First Results ◽  
Spread Of Infection ◽  
The Cost

The forced work of Russian universities remotely in the context of the pandemic (COVID-19) has generated a lot of discussion about the benefits of the new form of education. The first results were summed up and reports were presented, the materials of which showed that the main goal of online education — the prevention of the spread of infection, - has been achieved. Against this background, proposals and publications have appeared substantiating the effectiveness of the massive introduction of distance learning in Russia, including in higher education. However, the assessment of such training by the population and students in publications and in social networks was predominantly negative and showed that the number of emerging problems exceeds the possible benefits of the new educational technology. Based on the analysis of the materials of publications and personal experience of teaching online, the potential benefits and problems of distance learning in higher education in Russia are considered. It is proposed to consider the effects separately for the suppliers of new technology (government, universities) and consumers (students, teachers, society). It is substantiated that the massive introduction of online education allows not only to reduce the negative consequences of epidemics, but also to reduce budgetary funding for universities, optimize the age composition of teachers, and reduce the cost of maintaining educational buildings. However, there will be a leveling / averaging of the quality of education, and responsibility for the quality of training will shift from the state/universities to students. The critical shortcomings of online education are the low degree of readiness of the digital infrastructure, the lack of a mechanism for identifying and monitoring the work of students, information security problems, and the lack of trust in such training of the population. The massive use of online education creates a number of risks for the country, the most critical of which is the destruction of the higher education system and a drop in the effectiveness of personnel training. The consequences of this risk realization are not compensated by any possible budget savings.

Can Innovative Technologies Overcome HbA1c Disparity for African-American Youth with Type 1 Diabetes?

2021 ◽  
pp. 193229682110213
Author(s):  
Stuart Chalew ◽  
Alan M. Delamater ◽  
Sonja Washington ◽  
Jayalakshmi Bhat ◽  
Diane Franz ◽  
...  
Keyword(s):  
Type 1 Diabetes ◽  
Racial Disparity ◽  
Diabetes Management ◽  
New Technology ◽  
African American Youth ◽  
Glucose Monitoring ◽  
Supportive Role

Achieving normal or near-normal glycemic control as reflected by HbA1c levels in patients with type 1 diabetes (T1D) is important for preventing the development and progression of chronic complications. Despite delineation and dissemination of HbA1c management targets and advances in insulin pharmacology, insulin delivery systems, and glucose monitoring, the majority of children with T1D do not achieve HbA1c goals. In particular, African Americans are more likely not to reach HbA1c goals and have persistently higher HbA1c than Non-Hispanic Whites. Availability of pumps and other technology has not eliminated the disparity in HbA1c. Multiple factors play a role in the persisting racial disparity in HbA1c outcome. The carefully designed application and deployment of new technology to help the patient/family and facilitate the supportive role of the diabetes management team may be able to overcome racial disparity in glycemic outcome and improve patient quality of life.

scholarly journals 106 - Environmental Influences on the Cognitive and Psychological Well Being of Older Adults with Dementia

2020 ◽  
Vol 32 (S1) ◽  
pp. 15-16
Author(s):  
William E. Reichman ◽  
L. Bradford Perkins ◽  
Hilde Verbeek
Keyword(s):  
Quality Of Life ◽  
Older Adults ◽  
Physical Environment ◽  
Culture Change ◽  
Long Term Care ◽  
Small Scale ◽  
Term Care

This symposium will review the latest data on the influence of environmental design and its attributes on the cognitive and psychological wellbeing of older adults living with dementia. The presenters will cover the myriad ways in which the physical environment of care can adapt to the changing demands of older adults with sensory, motor and cognitive deficits and foster optimal functioning and quality of life. The role of emerging technologies will also be reviewed as they complement the contribution of the design of the physical environment to the wellbeing of older adults with cognitive impairment. Information will be offered through a review of the existing research literature as well as case studies that illustrate the impact of environmental modification on fostering wellbeing and minimizing the emergence of the behavioral and psychological symptoms of dementia. The presenters will represent and integrate sensibilities that have emerged from the fields of architecture, cognitive neuroscience and psychology.How the Principles of the Culture Change Movement Inform Environmental Design and the Application of Technology in the Care of Older Adults Living with DementiaWilliam E. ReichmanThe culture change movement informs a number of principles that have been applied to more contemporary design concepts for the congregate care of older adults living with dementia. This talk will review the core tenets of the Culture Change Movement as exemplified by the Greenhouse, Dementia Village and other innovative models of congregate long-term care. Specific reference will be made to how these tenets have been operationalized around the world into the design of programming and the creation of residential care environments that foster a better quality of life for older adults and an enhanced work environment for care providers. This talk will also include the emerging role of technologies that complement innovative design of the environment and which foster optimized social and recreational functioning of older adults living with dementia.A Better Life Through a Better Nursing Home DesignL. Bradford PerkinsOver the last 20 years there has been extensive experimentation related to the role of the environment in the housing, care and treatment of persons with Alzheimer’s and other age related dementias. Prior to that time the typical housing and care environment was a locked unit in a skilled nursing or other restrictive senior living facility. In 1991 the Presbyterian Association on Aging in Western Pennsylvania opened Woodside Place on its Oakmont campus. This small 36 bed facility was designed to incorporate the latest research and care experience with persons suffering from these issues. This one small project, as well as the long post occupancy research led by Carnegie Mellon University, clearly demonstrated that individuals with Alzheimer’s and related forms of dementia could lead a healthier, happier, higher quality of life in a more residential, less restrictive environment. Not everything in this pioneering project worked, and five generations of living and care models have followed that have refined the ideas first demonstrated by Woodside Place. Bradford Perkins, whose firm designed Woodside Place and over 100 other related projects, will discuss what was learned from Woodside Place as well as the five generations of projects (and post occupancy research) that followed.Innovative dementia care environments as alternatives for traditional nursing homes: evidence and experiences from the NetherlandsHilde VerbeekKey goals of the dementia care environment focus on increasing autonomy, supporting independence and trying to enable one’s own lifestyle for as long as possible. To meet these goals, innovative, small-scale and homelike care environments have been developed that have radically changed the physical, social and organizational aspects of long-term care in the Netherlands. This presentation discusses various Dutch models that have implemented small-scale and homelike care environments, including green care farms, dementia village and citizen initiatives. The models reflect a common care concept, focusing on residents’ remaining strengths, providing opportunity for choice and aiming to sustain a sense of self and control. A small number of residents (usually 6 to 8) live together in a homelike environment and nursing staff are part of the household. Residents are encouraged to participate in daily household activities, emphasizing normalization of daily life with person-centred care. The physical environment resembles an archetypal home. This talk presents the scientific evidence on the impact and effects of these small-scale, homelike models on residents, their family caregivers and staff. Furthermore, the presentation will highlight working approaches and how these initiatives have positively influenced routine care across the long-term care spectrum.

scholarly journals Small-Scale Coastal Fisheries in the Midst of Adaptation and Diversification: Insights from Southern Italy

2021 ◽  
Vol 13 (13) ◽  
pp. 7393
Author(s):  
Agata Nicolosi ◽  
Donatella Di Gregorio ◽  
Giuseppe Arena ◽  
Valentina Rosa Laganà ◽  
Donatella Privitera
Keyword(s):  
Southern Italy ◽  
Multiple Correspondence Analysis ◽  
Marketing Strategies ◽  
Small Scale ◽  
Artisanal Fishing ◽  
Economic Activities ◽  
Coastal Fisheries ◽  
Cluster Identification ◽  
The Eu

The study looks at the problems facing coastal fishing communities. It highlights the impacts that, in the complex framework of the EU reforms, have manifested themselves on economic activities and on society. The aim of the paper is twofold: to examine small-scale artisanal fishing in an area of Southern Italy in order to develop resilience and diversification and at the same time to outline the profiles of local bluefish buyers to highlight development strategies for the sector. The research carried out through a direct survey by administering a questionnaire to fishermen operating in areas of Southern Italy and the data cross-referenced with the opinions of local consumers. A conjoint experiment, followed by a multiple correspondence analysis and cluster identification, was used to outline the profiles of local bluefish buyers. The results of the analysis reveal that the fish market and the restaurant sector are the main distribution channels preferred by fishermen. Furthermore, fishermen are very sensitive to environmental issues and are willing to collaborate and actively participate in the environmental protection of the sea. Consumers recognise the quality of local bluefish, and they implicitly perceive the sustainability of the method of capture. The results show the need to undertake synergistic actions for the fishing industry, capable of activating marketing strategies adequately to support, promote and develop the sector. The results of the study provide helpful information for food companies in order to better segment their market and target their consumers, as well as to effectively promote their product using brands, certifications and traceability.

The Economics of the Soy Kit as an Appropriate Household Technology for Food Entrepreneurs

2021 ◽  
Vol 42 (1) ◽  
pp. 104-115
Author(s):  
Chungmann Kim ◽  
Peter Goldsmith
Keyword(s):  
International Development ◽  
Poverty Reduction ◽  
New Technology ◽  
Research Question ◽  
Development Project ◽  
Small Scale ◽  
Resource Base ◽  
Credit Access ◽  
Feed The Future ◽  
High Level

Background: The ability for women to operate as food entrepreneurs presents opportunities to leverage at-home production technologies that not only support family nutrition but also generate income. To these ends, the Feed the Future Malawi Agriculture Diversification Activity recently launched a development project involving a new technology, the Soy Kit. The Activity, a USAID (United States Agency for International Development) funded effort, sought to improve nutrition utilizing an underutilized local and highly nutritious feedstuff, soybean, through a woman’s entrepreneurship scheme. Objective: The USAID funded effort provides the overarching research question, whether the Soy Kit is a sustainable technology for delivering nutrition and income through a women’s entrepreneurship scheme. If true, then development practitioners will have a valuable tool, and the associated evidence, to address the important crosscutting themes, of nutrition, poverty, entrepreneurship, and women’s empowerment. To answer this research question, the research team first evaluates the underlying production economics of the kit to measure profitability, return on investment, and operational performance. Second, the team qualitatively and quantitatively assesses the kit’s overall appropriateness as a technology for the developing world. Methods: The team follows the schema of Bower and Brown and utilizes descriptive statistics, and financial techniques to conduct an assessment of the economics and technical appropriateness of the Soy Kit technology. Results: The results show a high level of appropriateness across a number of metrics. For example, the payback period from cash flow is under 6 months and the annual return on capital is 163% when entrepreneurs utilize a domestically sourced kit valued at US$80. Conclusion: The technology matches well with the rhythm of household economy, in particular women’s labor availability and resource base. Businesses earn significant returns on capital thus appear to be sustainable without donor subsidy. At the same time, available capital to finance kit entrepreneurs appears to be scarce. More research needs to take place to address the credit access question, in order to make small-scale kit entrepreneur truly self-reliant; the effects on poverty reduction at the household and village level; and nutrition improvement among the consumers.

Research Note: Women's Experience of the Mother Role

1993 ◽  
Vol 41 (2) ◽  
pp. 347-360 ◽  
Author(s):  
Pat O'Connor
Keyword(s):  
Medical Records ◽  
Rating Scales ◽  
Empirical Work ◽  
Research Note ◽  
Small Scale ◽  
Intensive Study ◽  
Lower Middle Class ◽  
Women's Experience ◽  
Mother Role

Despite the feminist critique of the assumptions implicit in the ideology of motherhood, relatively little empirical work has been done on women's own experience of this role. This research note uses data from a small scale intensive study of 51 married or cohabiting mothers aged 20–42 years old, whose oldest child was 15 years old, and who were randomly selected from medical records in a lower middle class area of North London. Building on Boulton's (1983) conceptualization, it differentiates between three aspects of this role (namely their commitment to it; its perceived identity enhancing/ destructive character and the positive/negative quality of their interaction with their children). These women's experience of the mother role was then assessed on these dimensions – using rating scales and anchoring examples (which are illustrated here). This research note suggests that even within this relatively homogenous lower middle/upper working class sample, the experience of motherhood was extremely varied: with less than half of the sample experiencing it positively at all three levels. An attempt is made to explain this variation.

INVESTIGATION OF TRANSVERSE CRACKS IN ANNULAR WELDED JOINTS OF MAIN GAS PIPELINES LINEAR PART

2021 ◽  
pp. 34-41
Author(s):  
V. A. Zaznobin ◽  
A. V. Nekrasov ◽  
A. V. Pankratov
Keyword(s):  
Welded Joints ◽  
Linear Part ◽  
Correct Identification ◽  
Gas Pipelines ◽  
Destructive Testing ◽  
Transverse Cracks ◽  
Additional Control ◽  
Non Destructive

Statistics of accidents and incidents on main gas pipelines in recent years indicate that almost half of the technogenic events occur due to depressurization in the area of annular welded joints, mainly joints containing defects made during construction and installation work during the construction of gas pipelines. The assessment of the degree of danger and the timing of external inspection and repair or replacement of defective annular welded joints largely depends on the quality of non-destructive testing, the correct identification of the types of defects and the objective determination of their geometric dimensions. To increase the reliability of the assessment of the degree of danger of the detected defects, it is necessary to use additional control methods, in particular, destructive ones. The paper presents the results of surveys and tests of metal fragments of annular welded joints of main gas pipelines containing transverse cracks of annular welded joints in order to determine the causes of the formation of these defects and to assess the degree of danger of the detected transverse cracks of the installation welds of main gas pipelines.

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