Perception of the Influence of Home Videos on Youth Farmers in Makurdi,Nigeria

This study examined the effects of home video on youth farmers. Data collected from 175 randomly selected farmers in Makurdi using a structured questionnaire showed 84.6% watch at least once a week; 77.1% watch between 4–10 p.m. Farming is portrayed as tedious and unprofitable. The effects are reduced interest in farming (90.3%), rural-urban migration (66.9%), and abandonment (57.1%). The chi-square test showed significant influence of home videos on male youth farmers (χ² Cal = 102.14 ≥ χ Tab = 3.84, p =.05). The study recommends collaboration between food stakeholders and moviemakers to inject positive agricultural messages to stimulate interest among youth farmers for improved agricultural production and sustainability.     

基于TSF-Stanford模型的广东省家用电脑废弃量估算研究

根据近年来广东省家用电脑的销售量,采用时间序列预测法预测了2012～2020年的销售量,运用斯坦福估算模型估算了2012～2022年的废弃量。结果表明:逐年稳步上升的家用电脑销售量,随着时间的推移将建立一个巨大的潜在丢弃池,累计到2022年废弃量将达到4154.19万台。对广东省开展废旧家用电脑回收工作提出了建议。     

城市住宅区园林植物景观评价

【目的】进行城市住宅区园林植物景观评价,为城市居民判断园林植物景观质量提供参考依据。【方法】根据住宅区园林植物景观的生态质量、休闲功能、美感效果三大功能构建园林植物景观评价指标体系,应用层次分析法、心理物理学方法以及模糊综合评价法等方法收集定性指标和定量指标数据进行园林植物景观评价,选取昆明市8个住宅小区园林植物景观作为实证对象,对指标权重值、项目层评价以及综合评价进行分析研究。【结果】园林植物总数对评判住宅区室外生态环境质量好与坏起主要作用,而彩色植物丰富度与区域园林植物景观好坏关系不大;从项目层评价来看,浅水湾小区园林植物景观综合质量最高,大树营小区最低;从住宅区综合评价来看,滇池康城、浅水湾、云天化3个住宅小区园林植物景观等级为良好,东华小区、高校小区、月牙塘小区3个住宅小区等级为较好,大树营小区、温泉花园2个住宅小区等级最低。【结论】从园林植物景观生态、功能及美学角度将定性评价与定量评价相结合、采用多种数据收集方法提出了一套比较完整的住宅区园林植物景观评价指标体系,可提高园林植物景观评价的准确性。     

农民工返乡创业促进新农村建设的理论和现状及对策

本文首先指出农民工返乡创业与新农村建设相互机制探讨的理论与现实意义。然后勾画出包括社会资本提升、中西部发展环境改善、经济发展方式转变等方面农民工返乡创业动力机制。从农民工返乡创业对新农村建设促进作用和新农村建设对农民工返乡创业的影响两方面,分析创业与新农村建设互动关系。对我国农民工返乡创业促进新农村建设的现状进行剖析,指出了自身资本积累不足、缺少优惠政策、创业环境有待完善等主要问题。在上述分析的基础上,从组织领导、政策保障、融资渠道、农民工素质、发展环境、宣传力度等方面提出了针对性对策建议。     

Movements of deep-sea red crab (Geryon maritae) off South West Africa/Namibia

Of 10 246 red crabs tagged between 1979 and 1984 on the continental slope of Namibia, a total of 1 604 were recaptured by commercial fishermen. Three tagging methods were tested. The most effective method was by inserting the tag through the epimeral suture. Though tagged crabs were released over a range of depths (from 400 to 900 m), the distances that they covered while at large were found to be unrelated to the depth at which they were released. No significant differences were found for distances moved by males compared to immature females, but differences (P< 0,01) did indicate that large males (≥105 mm carapace width (CW)) move farther than small males. Mature females moved significantly farther (P< 0,001) than the other crabs and over 32% moved > 100 km. The farthest distance covered by a single crab was 380 km. No seasonal trends regarding distances or direction moved were noted for either sex or size groupings examined. Mature females did show a tendency, although unrelated to season, to move northwards. Movements of crabs by depth suggested that, although crabs of all sizes and sexes move freely between depths, small males (< 100 mm CW) do tend to favour deeper water than larger males and vice versa. Female crabs tend to favour shallow depths and, of those tagged at 800 and 900 m, over 60% were recaptured shallower than 700 m. Based on the results of this study, it is considered that the movement patterns of G. maritae could best be described as nomadic. A possible reason for the fact that mature females display different movement patterns compared to other crabs in the population is discussed, as are possible implications to the fishery of crab movements between Namibia and Angola     

广东省城镇居民鲜乳品消费市场展望——基于双栏式模型的实证分析

基于2007--2009年广东省城镇居民的调查数据,运用双栏式模型对城镇居民户内鲜乳品消费的影响因素进行实证分析。结果表明,家庭收入水平和鲜乳品价格对城镇居民鲜乳品消费的参与决策和支出决策具有显著影响;饲料粮（如豆粕）价格的高低、家庭是否有老人或小孩以及是否有冰箱等也是影响鲜乳品消费的重要因素;同时,城镇居民户内鲜乳品消费量与鸡蛋价格、户主文化程度、家庭人口规模呈显著正相关;在经济越发达的地区,家庭鲜乳品消费支出比重也就越大;受“三鹿奶粉事件”影响,广东省城镇居民户内鲜乳品消费量逐年减少。因此,有必要从消费者、企业和政府3个层面采取有效措施扩大鲜乳品消费。     

节约型园林绿化建设实践探索——以娄底加州阳光小区为例

文章在分析娄底开展节约型园林绿化建设必要性的基础上,提出建设节约型园林绿化建设的基本原则,并以娄底加州阳光小区为案例分析其在践行节约型园林绿化建设工作中取得的成绩与存在的不足,为各地推进节约型园林建设提供借鉴与参考。       

JPWZ-1型微型植物工厂的研制

针对未来城市家庭蔬菜栽培和种植的需要,研制了一种适合于楼宇、家庭使用的微型植物工厂——JPWZ-1型微型植物工厂。JPWZ-1型微型植物工厂是将大型植物工厂的各项技术集成在一个小型化栽培空间中,利用温湿度精准控制、人工补光及营养液循环供养等方式种植和栽培叶菜类蔬菜作物。JPWZ 1型微型植物工厂控制系统利用S7-200PLC作为控制器,利用TPC7062K触摸屏作为人机界面,利用PID控制模式控制栽培区的温湿度环境。JPWZ-1型微型植物工厂功能齐全,布局合理,操作简单,能够让身处都市的人在家中栽培出周期短、品质高和无污染的蔬菜。      

甘肃省第四劳教所园林景观设计

根据设计对象所处地理位置和周围环境,在设计理念上打破传统的单位附属绿地以规则式为主的惯例而采用自然式,在功能要求、景观布局方面充分考虑实用性和观赏性,并将生态学理论和景观美学运用于植物景观设计中,进行甘肃省第四劳教所园林景观设计。       

中西园林风格差异成因解析

中国园林艺术和西方园林艺术是世界园林艺术的两大流派。由于地域、历史和文化传统等的不同,中西方园林各自形成独有的形态,风格迴异,差别鲜明。文中通过对各要素的剖析,探求形成不同园林风格的内因,以促进新时期园林的发展。